JP2729789B2 - Gazuri machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball mill which grinds a lens so as to fit into an eyeglass frame.

[0002]

2. Description of the Related Art In order to fit a lens into a spectacle frame, there has been known a balling machine which performs a grinding process so that a bevel for supporting a lens in a frame groove of the spectacle frame is formed on a peripheral portion of the lens. A point to be noted in beveling the lens is to form a bevel that fits the spectacle frame and also has the appearance and the lens edge arranged without any discomfort.

[0003]

However, how to bevel in the beveling (bevel locus curve and the axial position of the curve) largely depends on the experience and intuition of the processor. In order to form a good bevel, the skill of the processor was required. An object of the present invention is to provide a ball mill which can obtain an optimum bevel by a simple operation without requiring the skill of a processor.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by having the following configuration. (1) In a ball milling machine for grinding a lens to be processed so as to fit into a spectacle frame, shape data input means for inputting shape data of the spectacle frame, and the processed lens for the spectacle frame Layout data for inputting layout data including interpupillary distance in order to lay out the optical center of
Data input means; a tracing stylus for detecting the positions of the front and rear surfaces of the lens to be processed; edge detecting means for obtaining the edge position after lens processing based on the input result of the shape data input means; Calculating means for calculating the trajectory of the bevel based on the information of the input means and the edge detecting means; and displaying the bevel state at the designated position of the edge based on the trajectory of the bevel obtained by the calculating means. First display means, a display designating means capable of designating an intermediate edge thickness part other than the maximum edge thickness part and the minimum edge thickness part, and designating a position of the edge to be displayed on the first display means; Or second display means having a mark indicating which edge position the bevel state displayed on the first display means corresponds to the approximate shape of the lens after processing; change Characterized in that it comprises a bevel path changing means, the that.

(2) In the ball mill according to (1), the first display means and the second display means share a display, and display contents of both are displayed side by side. I do.

[0006] (3) In the ball mill according to (1), the second display means is formed to have a schematic front view of a spectacle frame or a processed lens.

(4) In the ball mill according to (3), a mark for indicating a processing center position is further formed on the schematic front view.

(5) The ball mill according to (4), further comprising a moving means for moving the processing center position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. (1) Overall Configuration of Apparatus FIG. 1 is a perspective view showing the overall configuration of a lens grinding apparatus according to the present invention. Reference numeral 1 denotes a base of the apparatus, on which components constituting the lens grinding apparatus are arranged. Reference numeral 2 denotes a lens frame and template shape measuring device which is built in the upper part of the device. A display unit 3 that displays measurement results, calculation results, and the like in characters or graphics and an input unit 4 that inputs data and instructs the apparatus are arranged in front of the display unit 3. At the front of the apparatus, there is a lens shape measuring device 5 for measuring the virtual edge thickness and the like of the unprocessed lens. Reference numeral 6 denotes a lens grinding unit, which is a rough whetstone 6 for a glass lens.
A grinding wheel 60 comprising a grinding wheel 0a, a rough grinding wheel 60b for plastic, and a beveling and flat processing 60c is rotatably mounted on a rotating shaft 61. The rotation shaft 61 is fixed to the base 1 with a band 62. Pulley 6 is attached to the end of rotating shaft 61.
3 are attached. The pulley 63 is connected via a belt 64 to a pulley 66 attached to a rotating shaft of an AC motor 65. Therefore, when the motor 65 rotates, the grindstone 60 rotates. Reference numeral 7 denotes a carriage unit, and reference numeral 700 denotes a carriage.

(2) Structure and operation of each part (a) Carriage part The structure will be described with reference to FIGS. FIG. 2 is a sectional view of the carriage. FIG. 3A is an A-view diagram showing the carriage driving mechanism, and FIG. 3-B is a BB cross-sectional view.
A carriage shaft 702 is rotatably slidably supported on a shaft 701 fixed to the base 1, and a carriage 700 is further rotatably supported on the carriage shaft 702.
Timing pulleys 703a, 703b, 703c having the same number of teeth are fixed to the carriage shaft 702 at the left end, the right end, and between them. The carriage 700 has a lens rotation axis 704 parallel to the shaft 701 and invariant in distance.
a, 704b are rotatably supported coaxially. The lens rotation shaft 704b is rotatably supported by the rack 705, and the rack 705 is movable in the axial direction, and can be moved in the axial direction by a pinion 707 fixed to the rotation shaft of the motor 706. The lens LE can be held between the rotation shafts 704a and 704b. Pulleys 708a and 708b having the same number of teeth are attached to the lens rotating shafts 704a and 704b, respectively.
c, 703b. An intermediate plate 710 is rotatably fixed to the left side of the carriage 700. The intermediate plate 710 has two cam followers 711, which sandwich a guide shaft 712 fixed to the base 1 in a positional relationship parallel to the shaft 701. Intermediate plate 710
Has a rack 713 fixed to the base 1 in a positional relationship parallel to the shaft 701 and a carriage left / right moving motor 71.
4 is engaged with a pinion 715 attached to the rotating shaft. With these structures, the motor 714 allows the carriage 7
00 can be moved in the axial direction of the shaft 701. A driving plate 716 is fixed to the left end of the carriage 700, and a rotation shaft 717 is attached to the driving plate so as to be rotatable in parallel with the shaft 701. A pulley 718 having the same number of teeth as the pulleys 708a and 708b is attached to the left end of the rotating shaft 717, and the pulley 718 is connected to the pulley 703a by a timing belt 719. Rotating shaft 7
17 is provided with a gear 720 at the right end.
Is engaged with a gear provided on the motor 721. When the motor 721 rotates, the pulley 718 is driven by the gear 720.
Rotates, and the carriage shaft 702 rotates via the timing belt 719, whereby the pulley 703b,
703c, timing belts 709a and 709b, pulleys 708a and 708b, and a lens chuck shaft 704.
a, 704b is rotated. Block 722 is the driving plate 7
The motor 721 is fixed to the block 722 so as to be rotatable coaxially with the rotation shaft 717.
A shaft 723 is fixed to the intermediate plate 710 in a direction parallel to the shaft 701, and a correction block 724 is rotatably fixed to the shaft 723. Round rack 7
Reference numeral 25 is arranged so as to be slidable in parallel with the shortest line connecting the axis of the rotating shaft 717 and the shaft 723, and penetrating through holes formed in the block 722 and the correction block 724. A stopper 726 is fixed to the round rack 725 and can slide only below the position where the correction block 724 abuts. A sensor 727 is provided on the intermediate plate 710, and the state of contact between the stopper 726 and the correction block 724 can be checked, so that the grinding state of the lens can be known. Rotation shaft 729 of motor 728 fixed to block 722
Is fixedly engaged with the round rack 725, so that the center distance γ ′ between the rotating shaft 717 and the shaft 723 can be controlled by the motor 728. Furthermore, with such a structure, γ ′ and the motor 728
Has a linear relationship with the rotation angle.

The distance (BC) between the axis of rotation of the grinding wheel B and the shaft 701 is α, and the lens chuck shafts 704 a and 70
The distance (AC) between the shaft 4b and the shaft 701 is β, the distance between the lens chuck shafts 704a and 704b and the center of rotation of the grindstone is γ, the angle between α and β is θ, and the axis of the shaft 723 and the shaft 701 is The distance (C-D) is α ′, the rotation axis 7
(CE) distance β ′, α between the shaft 17 and the shaft 701
The angle between 'and β' is defined as θ '. FIG. 4 schematically shows the positional relationship. α, α ′, β, and β ′ are invariable, and the center of rotation of the grindstone and the center points of the shafts 701 and 723 are invariant on the plane of the drawing, and the center point of the lens chuck shafts 704 a and 704 b and the rotation axis. The center point 717 rotates around the shaft 701 without changing the relative positional relationship. Here, if θ = θ ′ and α ′ / α = β ′ / β, △ ABC and △ EDC have similar shapes. At this time, α
'/ Α = γ' / γ, and γ 'and γ have a linear correlation. With such a structure, the motor 721 that rotates the pulley 718 that rotates around the rotation shaft 717
Is rotated around the point E following the change in △ CED when γ ′ is changed.
At this time, the rotation of the pulley 718 rotates the lens shafts 704a and 704b at a constant speed as described below. While rotating the pulley 718, γ ′ and γ are
Is changed, the rotation angle of the pulley 718 viewed with the line segment ED as the reference line is equal to the rotation angle of the lens axis viewed with the line segment AB as the reference line. The rotation of the motor 721 and the lens shafts 704a and 704b also has a linear correlation. In other words, the distance between the grinding wheel axis and the lens axis changes with a correlation with the output shaft rotation angle of the motor 728, and the lens axis 704a having the line segment AB as a reference line.
Reference numeral 704b rotates with a linear correlation with the output shaft rotation angle of the motor 721. A hook of a spring 731 is hooked on the driving plate 716, and a wire 732 is hooked on the hook on the opposite side.
Is hanging. Motor 73 fixed to intermediate plate 710
The rotating shaft of No. 3 has a drum and can wind up the wire 732. Grinding wheel 6 of lens LE
The grinding pressure of 0 can be changed.

(B) Lens frame and template shape measuring section (tracer) (a) Configuration The configuration of the lens frame and template shape measuring section 2 will be described with reference to FIGS. FIG. 5 is a perspective view illustrating a lens frame and a template shape measuring unit according to the present embodiment. The main unit is incorporated in the main body, and roughly includes two parts, namely, a frame and template holding unit 2000 for holding the frame and template, and a measuring unit 2100 for digitally measuring the shape of the lens frame and template of the frame. It is composed of The frame and template holding unit 2000 further includes two parts, a frame holding unit 2000A and a template holding unit 2000B.

[Frame Holder] Frame Holder 200
In Figure 6-1 showing a 0A, defines a geometrical substantially central point of the lens frame in the case of setting the spectacle frame in the frame holding section 2000A reference point O _R, as O _L, a reference line a straight line passing through the two points And The frame holding unit 2000A has a housing 2001. The center arm 2002 has a guide shaft 2003 mounted on the surface of the housing 2001.
a, which is slidably mounted on 2003b, the distal end of the center arm 2002 has a frame押工2004 and 2005 at the same intervals as O _R, O _L. Similarly, the light arm 2006 is connected to the guide shaft 2007a, 2007.
b, the left arm 2009 is mounted on the guide shaft 201.
0a and 2010b are slidably mounted, respectively, and a frame pusher 2008 is rotatably supported at the end of the right arm 2006 and a frame pusher 2011 is rotatably supported at the end of the left arm 2009. . Center arm 2002 so that the frame押工2004 and 2005 passes through the O _R, O _L, and slides to the reference line and a direction perpendicular write arm 2006 frame押工2008 O
After passing _R , the left arm 2009
1 is slid to the reference line substantially 30 ° inclined direction as passing through the O _L. In FIG. 6-2, the frame pushing 2004, 20
05, 2008, and 2011 are two slopes (2012a, 2012b) and (2014a, 2b)
014b), (2016a, 2016b), (2018)
a, 2018b), and the ridge lines 2013, 2015, 2017, and 2019 formed by the two slopes are on the same plane (measurement surface).
One axis of rotation is also on this measurement plane. A semicircular frame pusher 2020 is provided on the center arm 2002 and a guide shaft 20 attached to the center arm 2002.
In FIG. 6C, one end of a spring 2022 is attached to a pin 2023a implanted in the center arm 2002 so that the frame pusher 2020 is constantly pulled toward the center arm. The pin 20 which is hung and the other end is implanted in the frame pusher 2020
23b is hung.

FIG. 6-4 is a view of a part of the housing 2001 as viewed from the back side. A pulley 202 is provided on the back of the housing 2001.
4a, 2024b, 2024c, and 2024d are rotatably supported, and a wire 2025 is hung on pulleys 2024a to 2024d.
8a and 2029a, and are fixed to a pin 2026 planted in the center arm 2002 and a pin 2027 planted in the light arm 2006, which protrude from the back surface. Similarly, a pulley 2030 is attached to the back of the housing 2001.
a, 2030b, 2030c, and 2030d are rotatably supported, and a wire 2031 is hung on the pulleys 2030a to 2030d.
Through pins 28b and 2029b, they are fixed to a pin 2026b planted on the center arm 2002 and a pin 2032 planted on the left arm 2009 projecting from the rear surface. The center arm 2 is provided on the back of the housing 2001.
002 constantly O _R, O _L pulled toward the constant torque spring 20
33 is attached to a drum 2034 rotatably supported on the back surface of the housing 2001, and has a constant torque spring 203.
3 has a pin 2 implanted in the center arm 2002.
035. Also, the center arm 200
2, a claw 2036 is implanted, and in a state where the frame is not held, the claw 2036 is in contact with a microswitch 2037 attached to the back surface of the housing 2001 to determine the state of holding the frame. The left arm 2009 has a rim thickness measuring unit 20 for measuring the thickness of the rim of the frame.
40 are incorporated. A pulley 2042 is fixed to a rotating shaft 2041 of the frame pushing 2011, and rotates integrally with the frame pushing 2011, and this rotating shaft 2041 is rotated.
, A pulley 2043 that rotates independently of the rotation of the frame pusher 2011 is pivotally supported, and a rim thickness measuring pin 2044 is implanted in the pulley 2043. Further, a hollow rotary shaft 2045 is rotatably supported by the left arm 2009, and a potentiometer 204 is provided at one end.
6 has a pulley 2047 attached to the other end. A wire 2049 having both ends fixed to each pulley is hung on the pulley 2042 and the pulley 2047,
The potentiometer 2046 and the frame pusher 2011 always rotate in the same direction in conjunction with each other.

In FIG. 6-5, one end of the wire 2050 is fixed to the pulley 2043, and the
48, and the other end is hung on a pin 2052 implanted in the left arm 2009 via a spring 2051, and the axis of the potentiometer 2046 rotates according to the movement of the rim thickness measuring pin 2044. . In this embodiment, only one rim thickness measurement is performed. However, a contact that can move up and down and can detect the amount of movement is attached to the tracing stylus part 2120, and is brought into contact with the rim front when measuring the lens frame shape. Can be detected in the vertical direction. From the data on the front surface of the rim and the data in the vertical direction of the V-groove, the rim thickness over the entire circumference of the lens frame can be measured. Figure 6
In 6, the brake rubber 2 is provided on one side of the housing 2001.
A pressing plate 2061 to which 062 is attached is rotatably mounted by a shaft 2063 mounted on the pressing plate 2061, and one end of a sliding shaft of a solenoid 2064 mounted on the housing 2001 is mounted on the pressing plate 2061. is there. Further, one end of the spring 2065 is hung on the pressing plate 2061,
The other end is hung on a pin 2066 implanted in the housing 2001, and always pulls the pushing plate 2061 in a direction in which the brake rubber 2062 does not contact the center arm 2002. When the solenoid 2064 operates and pushes the push plate 2061 against the valve 2065, the brake rubber 2062 comes into contact with the center arm 2002 and the center arm
02 and the left arm 2009, which move in conjunction with the center arm 2002, are fixed.

[Template Holder] In FIGS. 5 and 6A, the template holder 2000B is supported by columns 2071a, 2071b, 2071c, and 2071d planted in a housing 2001. The substrate 2072 is a support 2071a.
To 2071d. Lid 2073 is Lid 2
The shafts 2074a and 2074b implanted in the substrate 2
The bearing 2075a and 2075b formed on the base plate 2072 are engaged with each other and are rotatably mounted on the substrate 2072. The substrate 2072 is provided with a hole sufficient for inserting and removing the spectacle frame into and out of the frame holding unit. A transparent window 2076 is formed in the lid 2073, and a template holder 2077 is fixed to the center of the window 2076. Template holder 20
77 have pins 2078a and 2078b implanted therein, and holes formed in the template and pins 2078a and
8b is engaged, and the template is fixed to the template holder 2077 with the set screw 2079. The center of the template holder 2077, with the lid 2073 is closed, and is configured so as to be positioned on O _R.

[Measurement Unit] Next, the configuration of the measurement unit 2100 will be described with reference to FIG. FIG. 7A is a plan view of the measuring unit, and FIG. Movable base 2101
Are formed with shaft holes 2102a, 2012b, and 2102c, and the shaft 2103 attached to the housing 2001 is formed.
a and 2103b slidably supported. Further, the movable base 2101 are implanted lever 2104, by sliding the movable base 2101 by the lever 2104, the rotation center of the rotation base 2105, O _R on the frame and template holding unit 2000, moved to the position of the O _L. The movable base 2101 has a pulley 21
A rotation base 2105 formed with 06 is rotatably supported. A belt 2109 is stretched between a pulley 2106 and a pulley 2108 attached to a rotation shaft of a pulse motor 2107 attached to the movable base 2101, whereby the rotation of the pulse motor 2107 is transmitted to the rotation base 2105. . Rotation base 2105
On the top, four rails 2110 as shown in FIG.
a, 2110b, 2110c, and 2110d are mounted, and a tracing stylus 2120 is slidably mounted on the rails 2110a and 2110b. Probe part 2
A shaft hole 2121 is formed in the vertical direction 120, and a tracing stylus shaft 2122 is inserted into the shaft hole 2121. A ball bearing 2123 is interposed between the tracing stylus shaft 2122 and the shaft hole 2121, thereby smoothing the vertical movement and rotation of the tracing stylus shaft 2122. An arm 2124 is attached to the upper end of the tracing stylus shaft 2122. Above the arm 2124, a solo-van ball-shaped bevel tracing stylus 2 that contacts the bevel groove of the lens frame.
125 is rotatably supported. At the lower part of the arm 2124, a cylindrical template measuring roller 2 abutting on the edge of the template is provided.
126 is rotatably supported. Further, the circumferential points of the bevel tracing stylus 2125 and the template measuring roller 2126 are configured to be located on the center line of the tracing stylus shaft 2122. Below the tracing stylus shaft 2122, a pin 2128 is provided with a ring 2127 rotatably attached to the tracing stylus shaft 2122.
The movement of the pin 2128 in the rotation direction is
It is limited by a long hole 2129 formed in the probe part 2120. At the tip of the pin 2128, a tracing stylus 212
The potentiometer 2130 is attached to the movable portion of the potentiometer 2130, and the vertical movement amount of the tracing stylus 2122 is detected by the potentiometer 2130. Contact point shaft 2
A roller 2131 is rotatably supported at the lower end of 122. A claw 2132 is implanted in the tracing stylus 2120. A pin 2133 is implanted in the probe 2120, and a pulley 2135 is attached to a shaft of a potentiometer 2134 attached to the rotation base 2105. Pulley 2136 on rotating base 2105
a and 2136b are rotatably supported on a pin 21
33 is connected to a pulley 2136
a, 2136b, and is fixed to the pulley 2139. As described above, the movement amount of the tracing stylus 2120 is detected by the potentiometer 2134. A constant torque spring 21 that constantly pulls the tracing stylus 2120 toward the distal end of the arm 2124 is provided on the rotation base 2105.
40 is attached to a drum 2141 which is rotatably supported on a rotating base 2105.
0 is connected to a pin 214 implanted in the tracing stylus portion 2120.
2 is fixed. Rail 2 on rotating base 2105
A tracing stylus driver 2150 is slidably mounted on 110c and 2110d. A pin 2151 is implanted in the tracing stylus drive unit 2150, and a pulley 215 is mounted on a rotation shaft of a motor 2152 mounted on the rotation base 2105.
3 are attached. Pulleys 2154a and 2154b are rotatably supported on the rotation base 2105,
The wire 2155 fixed to the pin 2151 is hooked on the pulleys 2154a and 2154b, and the pulley 2153
It is stuck to. Thus, the rotation of the motor is transmitted to the tracing stylus drive unit 2150. Probe drive unit 2150
Is measured by a constant torque spring 2140 by a tracing stylus drive unit 215.
The tracing stylus portion 2120 is in contact with the tracing stylus portion 2120 pulled to the 0 side, and the tracing stylus portion 2120 can be moved to a predetermined position by moving the tracing stylus driving portion 2150. In addition, the tracing stylus driving unit 2150 has an arm 2157 at one end which is in contact with a roller 2131 pivotally supported at the lower end of the tracing stylus shaft 2122, and an arm 2158 which pivotally supports the roller 2159 at the other end. The attached shaft 2156 is rotatably supported. Roller 2159 is rotating base 210
5, one end of the torsion spring 2166 is hung on the arm 2157, and the other end is fixed to the tracing stylus drive unit 2150 in the direction in which it comes into contact with the fixed guide plate 2160 fixed to 5.
When the tracing stylus drive unit 2150 moves, the guide plate 2160
The roller 2159 moves up and down. The shaft 2156 is rotated by the up and down movement of the roller 2159, and the arm 2157 fixed to the shaft 2156 also rotates about the shaft 2156, and
Raise or lower 2 Shaft 216 on rotating base 2105
3 is rotatably mounted, and a movable guide plate 2161 is fixed to the shaft 2163. Rotation base 2
One end of a sliding shaft of a solenoid 2164 attached to 105 is attached to a movable guide plate 2161. Spring 216
5 is hung on the rotating base 2105 and the other end is hung on the movable guide plate 2161.
9 and the guide portion 2162 of the movable guide plate 2161 are pulled to a position where they do not abut. When the movable guide plate 2161 is pulled up by the action of the solenoid 2164, the movable guide plate 2
161 moves to a position parallel to the fixed guide plate 2160, and the roller 2159 moves to the guide portion 2162.
, And can move along the guide portion 2162.

(B) Operation Next, the operation of the above-described lens frame and template shape measuring device 2 will be described with reference to FIGS. [Measurement of Lens Frame Shape] First, the operation when measuring the eyeglass frame will be described. The left or right side of the lens frame of the glasses frame 500 is selected to be measured, and the measuring unit 210 is fixed by the lever 2104 fixed to the movable base 2101.
Move 0 to the side to be measured. Next, frame pushing 202
0 is pulled to the front, and the interval with the center arm 2002 is sufficiently widened. The front part of the eyeglass frame is formed by the slopes 2012a, 2012b of the frame presses 2004, 2005,
After contacting the frames 2014a and 2014b, the frame presser 2020 is returned and brought into contact with the center of the glasses frame. After that, while spreading the center arm 2002,
While pressing down the rim thickness measuring pin 2044 with the rim of the glasses frame, the left and right rims are brought into contact with the slopes 2016a, 2016b, 2018a, and 2018b of the frame pushers 2008 and 2011. In the present embodiment, the frame押工2004,2005,2008,2011 are interlocked, O _R, is pulled in the direction toward the O _L by the constant torque spring 2033, frame押工2020 spring 20
22, the frame is pushed in the direction of the center arm, so that the frame pushes 2004, 2005, 2008, 20
If holding the frame 11,2020, the lens frame is held in three directions of force toward the geometric substantially center of each only lens frame, and the frame押工2020 center position of the frame is O _R, the O _L It is held at the midpoint. Also,
Since the frame presses 2008 and 2011 rotate in the plane formed by the ridgelines 2013, 2015, 2017 and 2019 of the four frame presses, the center of the bevel groove of the lens frame is the center of the frame presses 2004, 2005, 2008 and 2011. The position is always held in the measurement plane. In FIG. 8A, the rim portion of the lens frame pushes down the rim thickness measuring pin 2044. When the bevel groove is parallel to the measurement surface, the rim is formed with reference to the ridgeline 2019 formed by the slopes 2018a and 2018b of the frame pusher 2011. The movement amount of the thickness measuring pin 2044 can be detected by the potentiometer 2046. FIG.
In -2, if the bevel groove is inclined at an angle with respect to the measurement surface, the frame pusher 2011 is inclined along the rim portion, and the potentiometer 2046 is equivalent to this inclination.
The rim thickness can always be measured with the ridgeline 2019 as a reference. The rim thickness data thus obtained is compared with the edge thickness and used to determine an optimum bevel position so that the rim of the frame and the front refracting surface of the lens are at appropriate positions.

When the trace switch on the operation panel is pressed while the frame is set as described above, the solenoid 2064 operates to fix the center arm 2002, the right arm 2006, and the left arm 2009. In FIG. 9, the roller 2159 of the tracing stylus driving unit 2150 is at the reference position O, and the pulse motor 2107 is rotated by a predetermined angle so that the moving direction of the tracing stylus driving unit 2150 matches the moving direction of the frame pushing 2008 or 2011. The rotation base 2105 is turned. Next, the solenoid 21
When the guide portion 2162 of the movable guide plate 2161 is moved to a predetermined position by the 64 and the tracing stylus driving portion 2150 is moved in the direction of the frame pushing 2008 or 2011, the roller 2159 is moved to the guide portion 2160 of the fixed guide plate 2160.
a, the tracing stylus shaft 2122 is pushed up by the arm 2157, and the bevel tracing stylus 2125 is maintained at the height of the measuring surface. When the tracing stylus drive unit 2150 further moves, the bevel tracing stylus 2125 is inserted into the bevel groove of the lens frame, and the tracing stylus unit 2120 stops moving at FR.
150 moves to the FRL and stops. Subsequently, the pulse motor 2107 is rotated every predetermined number of unit rotation pulses. At this time, the tracing stylus unit 2120 moves on the guide shafts 2010a and 2010b according to the moving radius of the lens frame, the amount of movement is read by the potentiometer 2134, and the tracing stylus shaft 2122 moves up and down according to the curve of the lens frame. The movement amount is read by the potentiometer 2130. From the rotation angle （of the pulse motor 2107, the reading amount r of the potentiometer 2134 and the reading amount z of the potentiometer 2130, the lens frame shape is (r, Θ, z) (n = 1, 2,..., N). It is measured as Any four points (x ₁ , y ₁ , z ₁ ), (x ₂ , y ₂ , x) of the data (x, y, z) after the measurement data (r, Θ, z) are converted from polar coordinates to rectangular coordinates z ₂ ),
A frame curve C _F is obtained from (x ₃ , y ₃ , z ₃ ) and (x ₄ , y ₄ , z ₄ ) (the calculation formula is the same as the method for obtaining the lens curve).

In FIG. 10, (x _n , y _n , z _n )
The x, y components (x _n, y _n) from the measurement point A having the maximum value in the x direction (x _a, y _a), the measurement point B with the minimum value of the x-axis direction (x _b, y _b), y-axis direction of the measurement point C (x _c having the maximum value, y _c) and y the measurement point having the minimum value of the axial D (x _d, select y _d), the geometry of the lens frame Center O _F (x _F , y _F )

(Equation 1) From the known center of the frame.
From the rotation center O ₀ of 20 (x _0, y ₀₎ deviation amount of the distance L and O _0, O _F up ([Delta] x, [Delta] y), 1/2 of the lens frame geometric center distance FPD is

(Equation 2) Asking. Next, the inset amount I is calculated from the interpupillary distance PD set by the input unit 4,

(Equation 3) And the position O _s (x _s , where the optical center of the lens to be processed should be located, based on the set upward amount U.
y _s ),

(Equation 4) Asking. This _{O s (x n, y n} ) is converted into polar coordinates around the O _s, a processed data (s r _n,
s Θ _n ) (n = 1, 2,..., N). In the apparatus of the present embodiment, the shapes of the left and right lens frames can be measured, respectively, or the shape of one of the left and right lens frames can be measured, and the other can use inverted data.

[Measurement of Template Shape] Next, the operation for measuring a template will be described. The holes formed in the template are engaged with the pins 2078a and 2078b of the template holder 2077 attached to the lid 2073 of the template holding unit 2000B, and are fixed to the template holder 2077 with set screws 2079. In this embodiment the closing lid 2073, the center of the template holder 2077 is positioned on the O _R, feeler unit 212
Since the configuration matches the rotation center of 0, the geometric center of the template and the rotation center of the tracing stylus unit 2120 match. With the template set as described above, a trace switch of the input unit 4 described later is pressed. At this time, the rotation base 2105 is at a position where the moving direction of the tracing stylus driving unit 2150 and the y-axis direction coincide with each other, and the tracing stylus driving unit 2150 is at the reference position O. When the tracing stylus drive unit 2150 is moved in the opposite direction to the frame measurement, the pin 2132 implanted in the tracing stylus unit 2120 comes into contact with the center arm 2002, and when further moved, the center arm 2002, the right arm 2006, the left arm Push 2009.
The roller 2159 is a guide portion 216 of the fixed guide plate 2160.
0b to 2160a, the stylus shaft 2122 is pushed up by the arm 2157, and the template measuring roller 212
6 is maintained at a position above the upper surface of the template by a fixed amount. After the tracing stylus drive unit 2150 moves to the FOL, the solenoid 2064 operates, and the center arm 2002, the right arm 2006, the left arm 200
9 is fixed, the movable guide plate 2161 is moved to a predetermined position by the solenoid 2164, and the tracing stylus drive unit 2150
To the reference position. At this time, the guide portion 2160a of the fixed guide plate 2160 and the guide portion 21 of the movable guide plate 2161
Since the height of 62a is configured to be the same,
The template measuring roller 2126 moves while maintaining a constant height until it comes into contact with the template. Subsequently, the pulse motor 2107 is rotated every predetermined number of unit rotation pulses. At this time, the tracing stylus part 2120 moves the guide shaft 2 according to the radius of the template.
010a and 2010b, and the amount of movement is read by the potentiometer 2134. From the read amount r of the rotation angle theta and potentiometer 2134 of the pulse motor 2107, the template shape _{(r n, Θ n) (} n = 1,
2,..., N). From the measurement data (r _n , Θ _n ), the geometric center O is obtained in the same manner as in the frame measurement, and the processing data is obtained based on the FPD, PD, inset I, and upset U from the input unit. there (s r _n, s
Θ _n ) (n = 1, 2,..., N).

(C) Unprocessed lens shape measuring unit (a) Configuration FIG. 11 shows an unprocessed lens shape measuring unit for detecting the curve value, edge thickness, etc. of the lens after grinding under predetermined conditions before grinding. It is the whole schematic diagram. The detailed configuration will be described with reference to FIGS. FIG. 12 is a cross-sectional view of the shape measuring unit 5 of the unprocessed lens, and FIG. 13 is a plan view. A shaft 501 is rotatable on a frame 500 by a bearing 502, and a DC motor 503 and a photoswitch 50 are provided.
4, 505 and a potentiometer 506 are respectively assembled. A pulley 507 is rotatably mounted on the shaft 501, and a pulley 508 and a flange 509 are respectively assembled. The pulley 507 has a sensor plate 510
And a spring 511 are assembled. A spring 511 is mounted on the pulley 508 so as to sandwich the pin 512 as shown in FIG. Therefore, when the spring 511 rotates with the rotation of the pulley 507, the spring 511 has a spring force for rotating the pin 512 attached to the rotatable pulley 508, and the pin 512 is independent of the spring 511, for example, as indicated by an arrow. When rotated in the direction
Apply force to return to the original position. Motor 503
A pulley 513 is attached to the rotating shaft of
The rotation of the motor 503 is transmitted to the pulley 507 by a belt 514 hung between the pulley 507 and the pulley 507. The rotation of the motor 503 is detected and controlled by photo switches 504 and 505 by a sensor plate 510 attached to a pulley 507. The rotation of the pulley 507 causes the pulley 508 on which the pin 512 is attached to rotate, and the rotation of the pulley 508 is detected by the potentiometer 506 by the rope 521 hung between the rotation shaft of the potentiometer 506 and the pulley 520. You. At this time, pulley 508
The shaft 501 and the flange 509 rotate simultaneously with the rotation of.
The spring 522 is for keeping the tension of the rope 521 constant. The feelers 523 and 524 have pins 525,
The measuring arm 527 is rotatably attached to the measuring arm 527 by a reference numeral 526, and the measuring arm 527 is attached to the flange 509. The photo switch 504 detects the initial position of the measurement arm 527 and the measurement end position. The photoswitch 505 detects the relief positions of the feelers 523 and 524 and the measurement position with respect to the front refracting surface of the lens and the rear refracting surface of the lens, respectively. Measurement end position by photo switch 504 and photo switch 505
Corresponds to the position of the relief of the rear refracting surface of the lens. FIG. 15 is a diagram showing the correspondence between the signals of the photoswitch 504 and the photoswitch 505. As shown in FIG. 16, a shaft 529 to which a microswitch 528 is mounted is arranged on the measuring arm 527, and a rotatable arm 531 having a rotatable feeler 530 is provided on the shaft 529. The position of the feeler 530 is detected by the microswitch 528.
The cover 533 prevents grinding water or the like from adhering to the measuring device, and the seal member 534 prevents grinding water or the like from entering between the cover and the measuring device. In the present embodiment, the third feeler 530 is provided so as to contact the lens edge. However, when the lens is not suitable for processing, the feeler 523 is provided.
Since 524 also often indicates abnormal data, the feeler 530 can be omitted.

(B) Measurement method First, the motor 5 controlled by the photo switch 505
03 is rotated, and as shown in FIG.
27 is rotated from the initial position to the clearance position of the front refracting surface of the lens. In the escape position, when the carriage 700 holding the lens moves in the direction of the arrow, the feeler 523 and the lens do not interfere with each other, and the feeler 53
0 is set so as to be in contact with the lens edge. Next, the lens LE moves in the arrow 535 direction. The movement amount is controlled by the shape data or the lens shape data of the eyeglass frame to be framed after the lens processing. The lens moves in the direction of the arrow based on these data. If the lens size does not deviate from the eyeglass frame shape data or the lens shape data, the feeler 530 contacts the lens edge,
It moves in the direction of arrow 535, and the microswitch 528 detects it. When the lens size is off, a signal from the microswitch 528 is displayed on the display unit 3 indicating that grinding is impossible. Micro switch 528 is feeler 53
When the movement of 0 is detected, the motor 503 is rotated so that the feeler 523 comes into contact with the front refracting surface in order to measure the shape of the front refracting surface of the lens. The rotation amount is rotated to a position designed in consideration of the thickness of the lens and the length of the feeler 530 in the edge direction. This state is shown in FIGS. 17-2 and 17-3. When the feeler 523 moves to the position indicated by the two-dot chain line in the figure, the force of the spring 511 attached to the pulley 507 acts so that the feeler 523 comes into contact with the front refracting surface.

Next, the lens chuck shafts 704a and 704b
When the lens is rotated by one rotation, the lens moves in the direction of the arrow 536 according to the shape data or the lens shape data of the spectacle frame, the feeler 523 moves in the direction of the arrow 537, and the amount of movement is via the amount of rotation of the pulley 508. To obtain the shape of the lens front refraction surface. At the same time, whether or not the lens can be processed into a lens shape according to the above data is also measured by the microswitch 528, and this is displayed. Thereafter, the carriage 700 is returned to the initial position, the motor 503 is further rotated to rotate to the clearance position for measuring the rear refractive surface of the lens, and then the lens is moved to the measurement position. The amount of movement is measured by the feeler 524 while rotating the lens by one rotation in the same manner as the measurement of the front refraction surface.

(D) Display unit and input unit FIG. 18 is an external view of the display unit 3 and the input unit 4 of this embodiment.
Both are formed integrally. The input unit according to the present embodiment includes various sheet switches, a main switch 400 for controlling power on / off, a setting switch group 401 for inputting various processing information, and an operation switch group 410 for instructing an operation method of the apparatus. Consists of Setting switch group 40
Reference numeral 1 denotes a lens switch 402 for indicating whether the material of the lens to be processed is plastic or glass, a frame switch 403 for indicating whether the material of the frame is cell or metal, and a mode switch for selecting whether the processing mode is flat processing or bevel processing. 404, R for selecting whether the lens to be processed is for the left eye or the right eye
/ L switch 405, far / near switch 40 for up / down layout of lens optical center and long / short conversion of PD value
6. An input changeover switch 407 for selecting a change item of the setting data, a (+) switch 408 and a (-) switch 409 for increasing or decreasing the data of the item selected by the input changeover switch 407 are arranged. Operation switch group 410
Are a start switch 411, a pause switch 412 also serving as a screen switching switch to bevel simulation display, and a switch 4 for opening and closing the lens chuck.
13, a switch 414 for opening and closing the cover, a double sliding switch 415 for finishing double sliding, a lens frame, a trace switch 416 for instructing a template trace, and data measured by the lens frame and template shape measuring unit 2. Is transferred next. The display unit 3 is constituted by a liquid crystal display, and controls a set value of processing information, a bevel simulation for simulating a bevel position, a fitting state of the bevel and the lens frame, a reference set value, and the like by a main arithmetic control circuit described later. indicate. FIG. 19 is an example of a display screen, FIG. 19A is a screen for setting the processing information of the lens, and FIG. 19B is a screen of the bevel simulation.

(3) Electric Control System of Entire Apparatus The electric control system of the present embodiment having the above-described mechanical configuration will be described. FIG. 20 is an electrical block diagram of the entire apparatus. The main operation control circuit is constituted by, for example, a microprocessor, and its control is controlled by a sequence program stored in the main program. The main operation control circuit can exchange data with an IC card, an optometry system device, etc. through a serial communication port, and exchanges data with the tracer operation control circuit of the lens frame and template shape measurement unit. Do. The main operation control circuit includes a display unit 3 and an input unit 4
And a sound reproducing device. In addition, each photo switch unit such as photo switches 504 and 505 for measurement, a photo end switch for detecting a process end state, and micro switch units for cover opening / closing, processing pressure, and lens chuck are also connected to the main arithmetic control circuit. Have been. Potentiometer 506 for measuring the shape of the lens to be processed
Is connected to the A / D converter, and the converted result is input to the main operation control circuit. The measurement data of the lens which has been processed by the main processing control circuit is stored in the lens / frame data memory. The carriage moving motor 714, the carriage vertical motor 728, and the lens rotating shaft motor 721 are connected to the main processing circuit via a pulse motor driver and a pulse generator. The pulse generator is a device for receiving an instruction from the main arithmetic circuit and controlling how many pulses are output at a frequency of several Hz to each pulse motor, that is, the operation of each motor. The processing pressure motor 733, the lens measurement motor 503, and each of the motors for opening and closing the cover are driven by a drive circuit that receives a command from the main operation control circuit. The magnet motor 65 and the feed water pump motor are driven by an AC power supply, and their rotation and stop are controlled by a switch circuit controlled by a command from the main arithmetic control circuit.

Next, the lens frame and the template shape measuring section will be described. The outputs of potentiometers 2130 and 2134 for measuring the shape of the lens frame and template and the potentiometer 2046 for measuring the rim thickness of the frame are connected to an A / D converter, and the converted result is input to a tracer arithmetic control circuit. Is done. Each microswitch unit such as a microswitch for frame confirmation is also connected to the tracer arithmetic control circuit. The tracer rotation motor 2107 is controlled by a tracer arithmetic control circuit via a pulse motor driver. Further, the tracer moving motor 2152, the frame fixed solenoid 2064, and the tracing stylus fixed solenoid 2164 are driven by respective drive circuits that receive instructions from the tracer arithmetic control circuit. The tracer operation control circuit is constituted by, for example, a microprocessor, and its control is controlled by a sequence program stored in a program memory. Further, the measured shape data of the lens frame and the template are temporarily stored in the trace data memory and transferred to the main arithmetic control circuit.

(4) Operation of the Entire Apparatus Next, the operation of the lens grinding apparatus will be described with reference to the flowchart of FIG. [Step 1-1] The main switch 400 in FIG.
After setting to N, the frame or template is first set on the frame or template holding unit, and tracing is performed by the trace switch 416. [Step 1-2] The PD value and astigmatic axis of the wearer are input. In the case of template measurement, the FPD value is also input. Further, the perspective switch 406 is used to set whether the input PD is distant or near. The setting state is displayed on the display of the display unit 3. Here, after inputting the distant PD in the state set to distant, the distance changeover switch 406
When it is changed to near, it is converted to near PD by the following formula. Near PD = far PD × ((l−12) / (l + 13)) l is the required working distance, 12 is the distance between the corneal vertices of Japanese, and 13 is the distance between the corneal apex and the rotation point. If you change the distance after entering the near PD in the near state,
It is converted into a distant PD by the following equation. Remote PD = Near PD × ((l + 13) / (l-12)) The details of the conversion are described in JP-A-63-82621. In addition, the upper and lower layouts are set to the set values previously input in the above-described reference value setting for each of the near and far sides. When the operator wants to change the value, the value can be changed by the (+) switch 408 and the (-) switch 409. At this time, the PD can also be changed. [Step 1-3] Based on the radial information and FPD value of the frame or template obtained in step 1-1 and the information on the PD vertical layout input in the previous step, coordinate conversion is performed to a new coordinate center by the above-described method. , New radial information (r _s
δ _n , r _s θ _n ) and store them in the frame data memory. [Step 1-4] The operator determines the material of the lens to be processed, determines whether the lens is a glass lens or a plastic lens by the lens switch 402, and determines whether the frame is metal or cell by the frame switch 403. An R / L switch 405 is used to input whether the processing is an eye or a left eye, and the mode switch 404 is used to input whether the processing is flat processing or bevel processing. The lens processing size is set based on the set value previously input in the reference value setting for each of the eight combinations depending on whether the lens is plastic or glass, the frame is cell or metal, and the mode is bevel or flat.
To change the set value, press the (+) switch 40
8, it can be changed by the (-) switch 409. When the R / L designation of the processing lens is the same as the measurement side at the time of frame measurement, the data is used as it is. [Step 1-5] The motor 706 is rotated by the lens chuck opening / closing switch 413 to chuck the lens. At this time, if the lens has directionality such as an astigmatic axis, chucking is performed with the axial direction directed toward the center of rotation of the grindstone.

[Step 1-6, Step 1-7] If there is no abnormality in the above steps, the start switch 411 is pressed to start. Upon confirming that the start switch 411 has been pressed, the main arithmetic control circuit performs processing correction (grinding wheel diameter correction). Here, point a is the grinding wheel rotation center, b
The point is the lens processing center, R is the grinding wheel radius, LE is the frame data,
L indicates the distance between the grinding wheel rotation center and the lens processing center, respectively. Here, the radial information (r _s δ _n , r _s θ _n ) is read from the frame data memory, and the following calculation is performed.

(Equation 5) Astigmatic axis except when the 180-degree offset only r _s theta _n the difference, using the r _s [theta] & apos _n instead of r _s θ _n. Then rotated about only processing center arbitrary angle minute the radius vector information _{(r s δ n, r s} θ n), performs pre same calculations and formulas. Let the rotation angle of these coordinates be ξ _i (i = 1, 2,...)
..., and N), rotates sequentially 360 degrees to xi] _i than xi] _n. Let L _{i be} the maximum value of L at each ξ _i , then r
_{Let s} θ _n be Θ _i . Also, (L _i , ξ _i , Θ _i ) (i =
1, 2,..., N) are processed correction information and stored in the frame data memory.

[Step 2-1] Here, step 1-4
Is the beveling processing mode in step 2-2.
If the mode is the flat machining mode, the process proceeds to step 3-1. [Step 2-2] When the beveling mode is specified, the main arithmetic control circuit rotates the lens rotating shaft motor 721 via the pulse generator and the pulse motor driver.
lens axis 70 as r _s theta _n faces the grinding wheel rotation center direction
4a and 704b are rotated. Next, the carriage is rotated by the motor 714 in the same manner and moved to the measurement reference position at the left end of the carriage stroke.
8 is rotated to change L to a measurable position. Thereafter, the lens edge position on the line of the radial information is measured using the above-described unprocessed lens shape measuring mechanism. Thereby rZ the lens front edge position obtained _n, LZ a lens rear surface edge position
_Let it be _n . This edge information _{(lZ n, rZ n) (} n =
1, 2,..., N), and this is stored in the frame data memory. If it is determined that there is a portion where the lens outer diameter is smaller than the lens diameter, it is determined that a lens having a desired lens frame shape cannot be obtained, a warning is displayed on the display unit display, and execution of the subsequent steps is stopped. I do. [Step 2-3] Koba information (lZ _n, rZ _n) obtained in step 2-2 Request front curve and back curve from. First radius vector information _{(r s δ n, r s} θ n) of the rectangular coordinates (X _n, Y _n) is converted to. Any four points (X ₁ , Y
₁ ), (X ₂ , Y ₂ ), (X ₃ , Y ₃ ), (X ₄ ,
Y ₄ ), edge information (lZ ₁ , lZ ₁ ), (l
Z ₂ , lZ ₂ ), (lZ ₃ , lZ ₃ ), (lZ ₄ , lZ
₄ ) First find the front curve and its center. here,
(A, b, c) indicates the center coordinates of the curve, and R indicates the curve radius.

(Equation 6) here,

(Equation 7) Next, the back curve and its center are obtained by replacing all lZ with rZ. A bevel curve is obtained based on these information. The bevel curve is a curve drawn by the vertex of the V part on the outer periphery processed for lens framing.In general, the curve along the front curve is desirable, but if the bevel curve is too steep or gentle, it will be added to the frame. There is inconvenience in inserting. Therefore, the bevel curve forms the same curve as the front curve when the front curve value is within a certain width. The position of the top of the bevel is a position shifted a certain amount rearward from the edge position on the front surface of the lens. The center of the curve is placed on the line connecting the curve center of the front curve and the curve center of the rear curve. If more than a width have bevel curve based on the edge information (lZ _n, rZ _n), obtaining the yZ _n from _{lZ n + (rZ n -lZ n} ) R / 10 = yZ n. At this time, if R = 4, this is equivalent to setting the edge thickness at a ratio of 4: 6. If possible is curved along the front surface curve and the data _{(r s θ n, y l} Z
As _n), when it is impossible to bevel data data obtained as R = 4 as _{(r s θ n, y 4} Z n). When the edge thickness is large, it may not be necessary to stand at a ratio along the front curve of the lens. At this time, the bevel data is set along the frame curve.

[Step 2-4] The bevel shape obtained in the above step is displayed on the display unit 3. The display displays the radius vector information _{(r s δ n, r s} θ n) from the frame shape, further processing center for displaying the rotation cursor 30 around the. The bevel cross section 32 at the position where the cursor and the frame shape are in contact is displayed on the left side of the panel. The cursor rotates to the right while pressing the (+) switch and to the left while pressing the (-) switch, and always displays the bevel cross section at that position. When the rotation cursor is at the position indicated by the rim thickness measurement position mark 31, a rim position mark 33 is displayed at the upper left of the bevel cross section. The position of the bevel is a position where the front surface of the lens has a certain relationship with the front surface of the rim based on the measured rim thickness. [Steps 2-5 and 2-6] If there is no problem after confirming the bevel curve, the processing is started by starting the start switch 400 again. If the user wants to check the bevel curve and change it, the type and position of the bevel curve are changed according to step 2-6. According to the settings in Steps 1-4, the carriage is moved by the motor 714 so that the lens to be processed is placed on the rough grinding stone for plastic 60c if the lens is plastic, or on the rough grinding stone 60a for glass if the lens is glass. Processing correction information read from the frame data memory the distance L between the grinding wheel rotational center and the lens processing center by a motor after rotating the grinding wheel _{(L i, ξ i, Θ} i) L of the
Move to ₁ . Processing end photo switch 727
There is moved at the same time L is rotated an angle waiting to be ON until xi] ₂ to L _2. The above operation is continuously performed based on (L _i , ξ _i ) (i = 1, 2,..., N). As a result, the lens obtains radial information (r _s δ _n , r _s θ
_n ) is processed.

[Steps 2-7, 2-8, 2-9] After the lens is separated from the grindstone by the motor 728, the lens is moved onto the beveled grindstone by the carriage moving motor 714. Next, the processing correction information (L _i , ξ _i , Θ _i ) and the bevel data (r _s δ _n , r _s θ _n ) or (r _s θ _n ,
from YKZ _n) obtained by converting the beveling data YZ _i. Conversion is the first _{Θ i = r s θ n r} s θ n and i =
,..., N are obtained in this order. R _s θ _n at that time
Sequentially selects the bevel position YlZ _n or YKZ _n for beveling information it as _{Z i (L i, ξ i} , Z i)
And then store it again in the frame data memory. Based on this information, the bevel determines that motor 728 is L _i , motor 721 is ξ _i , motor 714 is Z _i , i = 1,
Processing is performed while simultaneously controlling in the order of 2,..., N. [Step 3-1] In the case where the grinding mode is the flat processing mode, if the lens is made of plastic by the setting in step 1-4, the roughing stone 60 for plastic is used.
c, if it is glass, the carriage is moved to the motor 714 so that the lens to be processed comes on the rough grinding wheel 60a for glass. After the grindstone is rotated, the distance L between the grindstone rotation center and the lens machining center by the motor 728 is read from the frame correction data (L _i , ξ _i , Θ _i ) in the frame correction data.
Move to _i . When that time processing end photoswitches 727 rotates the angle waiting to be ON until xi] ₂ is at the same time moving the L to L _2. The above operation is continuously performed (L
_i , ξ _i ) (i = 1, 2,..., N).
Thus the lens is processed into the shape of the radius vector information _{(r s δ n, r s} θ n).

[Step 3-2, 3-3] Motor 728
After the lens is separated from the grindstone, the lens LE is moved by the carriage moving motor 714 onto the flat portion of the beveled grindstone 60c. Here, the outer periphery of the lens LE is finish-processed by the same method as in step 2-8 and thereafter. Such a description is a principle explanation of the operation, and it goes without saying that various changes can be made depending on the degree of automation. Although one embodiment of the present invention has been described above, it is obvious to those skilled in the art that the embodiment can be easily modified under the same technical idea as the present invention, and these also include the present invention. Needless to say.

[0034]

According to the present invention, sufficient information can be given to the processor by the processing display, so that a good bevel as desired by the processor can be obtained without requiring skill.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of a lens grinding device according to the present invention.

FIG. 2 is a sectional view of a carriage.

FIG. 3A is an arrow view A showing a carriage driving mechanism.
FIG. 3B is a cross-sectional view taken along line BB.

FIG. 4 is a diagram illustrating the principle of the device.

FIG. 5 is a perspective view showing a lens frame and a template shape measuring unit according to the present embodiment.

FIG. 6-1 is a diagram showing a frame holding unit 2000A.

FIG. 6-2 is a detailed view of a holding unit.

FIG. 6-3 is a diagram illustrating a mechanism for holding a lens.

FIG. 6D is a diagram of a part of the housing 2001 as viewed from the back side.

FIG. 6-5 is a diagram illustrating a rim thickness measurement mechanism.

FIG. 6-6 is a diagram illustrating a frame fixing mechanism.

FIG. 7-1 is a plan view of a measurement unit.

FIG. 7-2 is a sectional view taken along line CC of FIG. 7-1.

FIG. 7-3 is a sectional view taken along line DD of FIG. 7-1.

FIG. 7-4 is a sectional view taken along line EE of FIG. 7-1.

FIG. 8A is a diagram illustrating a measuring method.

FIG. 8-2 is a diagram showing a measuring method.

FIG. 9-1 is a diagram for explaining the movement of a tracing stylus in a vertical direction.

FIG. 9B is a diagram for explaining the movement of the tracing stylus in the vertical direction.

FIG. 10 is a diagram illustrating coordinate conversion.

FIG. 11 is a schematic view of the entire shape measuring section of a raw lens.

FIG. 12 is a cross-sectional view of a shape measuring unit of a raw lens.

FIG. 13 is a plan view of an unprocessed lens shape measuring unit.

FIG. 14 is an explanatory diagram showing the operation of a spring and a pin.

FIG. 15 is a diagram illustrating a correspondence relationship between signals of the photo switch 504 and the photo switch 505.

FIG. 16 is a diagram for measuring a moving radius of a lens.

FIG. 17A is a diagram illustrating the measurement operation of the measurement unit.

FIG. 17-2 is a diagram for explaining the measurement operation of the measurement unit.

FIG. 17-3 is a diagram illustrating the measurement operation of the measurement unit.

FIG. 18 is an external view of a display unit and an input unit according to the present embodiment.

FIG. 19A is a diagram of a display screen for setting lens processing information.

FIG. 19B is a diagram of a display screen of the bevel simulation.

FIG. 20 is an electrical block diagram of the entire apparatus.

FIG. 21 is a flowchart illustrating the operation of the apparatus.

[Description of Signs] 2 Lens frame and template shape measuring device 3 Display unit 4 Input unit 5 Lens shape measuring device 6 Lens grinding unit 7 Carriage unit 523,524 Filler 506 Potentiometer

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-118460 (JP, A) JP-A-60-52249 (JP, A) JP-A-60-15623 (JP, A) JP-A 61-118 274859 (JP, A) Actually open 1986-195960 (JP, U)

Claims (5)

(57) [Claims] And a shape data input means for inputting shape data of the spectacle frame, wherein the shape data input means inputs shape data of the spectacle frame. To lay out the optical center of the processed lens,
Layout data input means for inputting layout data including the interpupillary distance, and a tracing stylus for detecting the positions of the front and rear surfaces of the lens to be processed, and a lens based on the input result of the shape data input means Edge detecting means for obtaining the edge position after processing, calculating means for calculating the bevel trajectory based on the information from the shape data input means and the edge detecting means, and a bevel state at the specified edge position. A first display means for displaying a graphic based on the trajectory of the bevel obtained by the calculating means, and an intermediate edge thickness part other than the maximum edge thickness part and the minimum edge thickness part can be designated; A display designating means for designating a position of an edge to be displayed;
A second display unit having a mark indicating a position of a bevel to be displayed on the display unit; and a bevel locus changing unit for changing a locus of the bevel by the arithmetic unit. Traverse machine. 2. The ball mill according to claim 1, wherein the first display means and the second display means share a display,
A balling machine characterized in that both display contents are displayed side by side. 3. The ball-adhering machine according to claim 1, wherein said second display means has a schematic front view of an eyeglass frame or a processed lens. 4. A ball mill according to claim 3, further comprising a mark for indicating a processing center position on said schematic front view. 5. The ball mill according to claim 4, further comprising moving means for moving the processing center position.