JP5350902B2 - Yatoi and adapter combination and lens holder - Google Patents

Description

  The present invention relates to a combination of a Yatoi and an adapter used for processing an optical lens such as a spectacle lens and a lens holder.

  Conventionally, as a method of manufacturing an optical lens, in particular, a plastic lens for spectacles, from a lens material (for example, a semi-finished lens) thicker than a finished size, a cutting machine by NC (numerical value) control (hereinafter referred to as a curve generator). The lens material is cut by using this method to produce a lens that is slightly thicker than the finished dimensions that allow for sanding allowance and polishing allowance, and this lens is manufactured by polishing it into a predetermined curved surface shape using a polishing device. ing.

  In the lens cutting process and polishing process, the lens is held by a lens holder and attached to a processing apparatus. The lens holder is made of a yatoi and a low melting point alloy (hereinafter also referred to as an alloy), and further includes a blocking ring used when the lens is attached to the yatoi via the alloy (see Patent Document 1).

  FIG. 9 shows a conventional lens holder disclosed in Patent Document 1. The lens holder 1 includes a Yato 2, an alloy 3, and a blocking ring 4. For example, the lens 5 is attached to the Yato 2 by a lens block device A called a layout blocker manufactured by LOH, which is generally commercially available. Yes. In order to attach the lens 5 to the yatoy 2, a scratch-preventing protective film 6 is attached to a surface (a processed surface such as a convex surface) 5 b opposite to the processing surface 5 a of the lens 5 in advance. Next, the yatoy 2 and the blocking ring 4 are fixed to the mounting portion 7 of the lens block device A by a pin and appropriate fixing means, and the convex surface 5b on which the protective film 6 is adhered is placed on the ring 4 below. And place it. Thereby, the blocking ring 4 surrounds the outer periphery of the yatoy 2, and supports the outer peripheral portion of the convex surface 5 b of the lens 5 by the inner peripheral edge on the upper surface side. Then, the molten alloy 3 is poured into a space surrounded by the yatoy 2, the blocking ring 4, the lens 5, and the mounting portion 7 to solidify the lens 5, thereby fixing the lens 5 to the yatoy 2. After the blocking ring 4 is separated from the alloy 3, the lens 5 is attached to the processing apparatus together with the yato 2, and the processing surface 5 a is cut or polished.

JP 2003-334748 A

  However, the above-described conventional lens holder 1 has the following problems. That is, in recent years, various types of processing devices and lens block devices (hereinafter referred to simply as devices or various devices) have been introduced by replacing devices and introducing devices equipped with new functions. And more opportunities to use it with existing models. In this case, if the lens block device A and the shape of the mounting portion of the processing device match, the Yatoi 2 can be used as it is as a common tool. However, since the shape of the mounting part is actually different depending on the various devices, models, manufacturers, etc., when changing the device or when it is necessary to use a device with a different shape of the mounting part in a continuous process, etc. There was a problem that the type of yatoi increased because the yatoy 2 had to be changed to another yatoy that fits the mounting portion of the apparatus. Specifically, in the case of the lens block device A, as shown in FIG. 9, an annular concave portion 7a is provided on the surface of the mounting portion 7, and a convex fitting portion 8 that fits the concave portion 7a is provided. A dedicated Yatoy 2 is used.

  On the other hand, in various processing apparatuses, the mounting portion is generally composed of a mechanical chuck such as a scroll chuck, an independent chuck, a collet chuck, a magnet chuck, and a drill chuck. Therefore, it is necessary to replace the yatoy 2 itself with a yatoy that can be adapted to the scroll chuck. In that case, after removing the lens 5 from the yatoy 2, the lens must be fixed to another yatoi, and the replacement work of the yatoi is complicated, takes time, and reduces productivity. On the other hand, when the yatoy 2 is not exchanged, it is necessary to select and use a processing apparatus having a mounting portion corresponding to the yatoy 2.

  The present invention has been made in order to solve the above-described conventional problems. The object of the present invention is to eliminate the need for replacement of the yatoy and to use the yatoy as a common tool for various devices having different device mounting portions. It is to provide a combination of a yatoi and an adapter and a lens holder that can be used as a lens holder.

  In order to achieve the above object, the combination of a yatoi and an adapter according to the present invention has a lens mounting portion and a fixed base integrally, and the fixing is performed when the lens is fixed to the lens mounting portion via a low melting point alloy. A Yatoi whose base is fixed to the mounting portion of the specific device, a first fitting portion that fits the fixed base, and a second fitting portion that fits the mounting portion of another device different from the specific device And an adapter that is detachably attached to the yatoy when the yatoy is attached to the other device.

  In the combination of the yatoi and the adapter according to the present invention, in the above invention, the specific device is a lens block device, and the other device is either a cutting device or a polishing device.

  Moreover, the combination of the Yatoi and the adapter according to the present invention is such that, in the above invention, the second fitting portion of the adapter is fitted to the scroll chuck.

  The lens holder according to the present invention includes a yatoy, a low melting point alloy, a blocking ring, and an adapter. The yatoy is attached to a lens mounting part to which the lens is fixed via the low melting point alloy, and a mounting part of a specific device. A fixed base portion to be fixed, and the blocking ring surrounds the outer periphery of the yatoy and supports the outer periphery of the lens, thereby melting between the yatoy and the lens and the mounting portion of the specific device. A space into which a melting point alloy is poured is formed, and the adapter is fitted with a first fitting portion that fits the fixed base portion of the Yatoi, and a second fitting fitting that fits a mounting portion of another device different from the specific device. And a detachable attachment to the yatoe when the yatoy is attached to the other device.

  In the present invention, the Yatoi is directly attached to the attachment part of the specific device, and attached to the attachment part of the other device via an adapter. Therefore, the Yatoi can be used as a common tool for the specific device and other devices, and when attached to the other device, it is not necessary to remove the lens from the Yatoy simply by attaching the adapter to the Yatoi. Furthermore, since the lens is not removed from the yatoy, when the adapter is used, it is not necessary to re-center the lens and it is possible to proceed to the next step.

It is sectional drawing which shows one Embodiment of the lens holder which concerns on this invention. It is a perspective view of a yatoy. It is a side view of Yatoi. It is a bottom view of Yatoi. It is a perspective view of an adapter. It is a side view of an adapter. It is a bottom view of an adapter. It is sectional drawing which shows the state which mounted | wore the scroll chuck with the Yatoi via the adapter. It is sectional drawing which shows a mode when a lens is fixed to a yatoi with the conventional lens holder.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
This embodiment shows an example applied to a lens holder that blocks the convex surface of a lens. Note that the same components and portions as those shown in FIG. 9 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  1 to 8, the lens holder 10 includes a yatoy 2, an alloy 3, a blocking ring 4 and an adapter 11, and the conventional lens holder 1 shown in FIG. 9 includes an adapter 11. Is different. For this reason, the yatoy 2 and the blocking ring 4 are the same as the conventional one.

  1 to 4, the yatoy 2 has substantially the same structure as the conventional yatoe 2 shown in FIG. 9, and is formed into a cylindrical shape having a diameter smaller than the outer diameter of the lens 5 and an appropriate plate thickness by SUS303 or the like. The lens mounting portion 12 and the fixed base portion 13 are integrally formed. The lens mounting portion 12 is a portion to which the lens 5 is fixed via the alloy 3 in the upper half portion of the yatoy 2. The upper surface 15 of the lens mounting portion 12 forms a flat lens mounting surface, and is formed with non-through holes near the outer periphery, for example, four holes 16 are formed at equal intervals in the circumferential direction. These holes 16 are filled with the alloy 3, thereby increasing the bonding strength between the yatoe 2 and the alloy 3 and preventing the alloy 3 from rotating, peeling off or dropping off. A positioning line 17 for positioning the adapter 11 is displayed on the outer peripheral surface of the lens mounting portion 12.

  The fixed base portion 13 of the yatoy 2 is a lower half portion of the yatoy 2 and is a portion that is fixed to an attachment portion of a specific device used when the lens 5 is fixed to the yatoy 2. The specific device to which the fixed base 13 is fixed is a lens block device A called a layout blocker manufactured by LOH shown in FIGS. 1 and 9, but is not limited thereto, and the shape of the mounting portion 7 is the fixed base 13. As long as it matches the shape of the lens, it may be a lens block device made by a company other than LOH.

  The fixed base portion 13 is formed in an inverted trapezoidal cylindrical shape that opens downward, so that the upper end portion is a disc shape, and the lower end portion constitutes a fitting portion 18 formed of an annular protrusion having a cross-sectionally inverted trapezoidal shape, An inner portion of the fitting portion 18 forms a trapezoidal recessed portion 19. Further, two positioning recesses 20 and 20 are formed in the distal direction 18 a (FIG. 4) of the fitting portion 18 in the radial direction with a 180 ° separation in the circumferential direction, and both ends are formed on the inner and outer walls of the fitting portion 18. It is open.

  When the yatoy 2 is attached to the attachment portion 7 of the lens block device A shown in FIG. 1, the fitting portion 18 is fitted into the recessed portion 7a of the attaching portion 7, and the inner protrusion 21 of the recessed portion 7a is It fits into the recessed portion 19 of the fixed base 13. Further, two positioning projections 22 (see FIG. 9) that fit into the positioning recess 20 of the fixed base 13 are integrally projected on the bottom surface of the recessed portion 7a. Prevents rotation against.

  In FIG. 1, the blocking ring 4 is a ring formed by SUS303 or the like whose inner diameter is slightly smaller than the outer diameter of the lens 5, and two positioning holes 28 (FIG. 9) formed at equal intervals in the circumferential direction. See).

  Here, when the yatoy 2 is mounted on the mounting portion of the cutting device or the polishing device, if the mounting portion of these devices has a shape different from that of the mounting portion 7 of the lens block device A, specifically, for example, a scroll shown in FIG. When the chuck 40 is used, the Yatoi 2 cannot be fixed to the general scroll chuck 40. In that case, the yatoy 2 is detachably attached to the scroll chuck 40 via the adapter 11.

  5 to 8, the adapter 11 can be used for other devices having a shape of the mounting portion different from the mounting portion 7 of the lens block device A (specific device), such as a cutting device or a polishing device. The first fitting portion 41 is formed in a disk shape having substantially the same outer diameter as that of the yatoy 2 and is fitted (fitted) to the fixed base portion 13 of the yatoy 2 on the upper surface side. A second fitting portion 42 is formed on the lower surface side to be fitted to the scroll chuck 40. The first fitting portion 41 is formed of a mountain-shaped projecting body extending in the radial direction, and each end portion is fitted into the positioning concave portions 20 and 20 of the fixed base portion 13, respectively. Prevent relative rotation of the.

  The second fitting portion 42 is composed of three grooves formed radially from the center to the outside on the lower surface of the adapter 11, and the outer end thereof is open to the outer peripheral surface of the adapter 11. A positioning line 43 is displayed on the outer peripheral surface of the adapter 11 corresponding to the positioning line 17 of the yatoy 2.

  In FIG. 8, the scroll chuck 40 includes a chuck main body 40A, three claws 45 slidably disposed in the radial direction on the front surface of the chuck main body 40A, and three claws 45 incorporated in the chuck main body 40A. And a cam mechanism (not shown) that opens and closes in conjunction with each other, and each claw 45 is fitted into the second fitting portion 42 of the adapter 11, so that the yatoy 2 can be connected to the scroll chuck 40 via the adapter 11. Removably attached to. Further, the claw 45 automatically presses the outer periphery of the yatoy 2 from three directions so that the axis of the yatoy 2 automatically coincides with the axis of the scroll chuck 40.

  In the lens holder 10 having such a structure, when the lens 5 is fixed to the Yato 2, the Yato 2 is attached to the attachment portion 7 of the lens block device A. At this time, the fitting portion 18 of the fixed base portion 13 is fitted into the concave portion 7 a of the attachment portion 7, and the inner protrusion portion 21 of the concave portion 7 a is fitted to the concave portion 19 of the fixed base portion 13. Further, the positioning projection 22 (FIG. 9) provided on the groove bottom of the recessed portion 7a is fitted into the positioning recess 20 of the fixed base 13, thereby preventing the rotation of the yatoy 2.

  Further, the blocking ring 4 is fixed to the mounting portion 7 of the lens block device A by a positioning pin 29 and appropriate fixing means 30 as shown in FIG.

  Next, after the lens 5 to be processed is placed on the upper surface of the blocking ring 4 with the convex surface 5b side down and the center is matched, the lens 5 is pressed by an appropriate pressing member, and the blocking ring is pressed. Fix to 4. In this state, the alloy 3 is allowed to flow into the space surrounded by the yatoe 2, the blocking ring 4, the lens 5, and the mounting portion 7 from the inlet to be solidified, so that the lens 5 is attached to the lens mounting surface 15 of the yatoy 2. Fix through Alloy 3. FIG. 1 shows this state.

  When the work of attaching the lens 5 to the yatoy 2 is completed, the yatoy 2 is removed from the attaching part 7, the blocking ring 4 is removed from the alloy 3, and then the attaching part of the cutting device that processes the concave surface 5 a of the lens 5. Attach to.

  At this time, unlike the attachment part 7 of the lens block device A, the attachment part of the cutting device cannot be attached directly when the scroll chuck 40 is used. Wear. The adapter 11 is detachably attached to the yatoy 2 by fitting the first fitting part 41 into the positioning recess 20 of the yatoy 2 with the positioning line 17 and the positioning line 43 being aligned with each other. In this case, in addition to the fitting between the positioning recess 20 and the first fitting portion 41, the Yatoi 2 and the adapter 11 may be fixed by a bolt or a set screw.

  Then, the Yatoi 2 and the adapter 11 are mounted on the scroll chuck 40 of the cutting device, and the three claws 45 are fitted into the second fitting portion 42 of the adapter 11 to fix the adapter 11 to the scroll chuck 40. Then, the concave surface 5a of the lens 5 is cut by a cutting device, and a lens that is thicker than the predetermined finishing dimension by a polishing allowance is manufactured. After the cutting process is completed, the yatoy 2 and the adapter 11 are removed from the cutting device and attached to the mounting portion of the polishing device. When the scroll chuck 40 is used in the mounting portion of the polishing apparatus, the Yato 2 is similarly attached via the adapter 11, and the concave surface 5a of the lens 5 is polished and finished to a predetermined curved optical surface. On the other hand, when the polishing apparatus uses a chuck other than the scroll chuck 40, an adapter suitable for the chuck is prepared in advance, and the Yato 2 is attached to the polishing apparatus by replacing it.

  Thus, since the lens holder 10 according to the present invention includes the adapter 11 shown in FIGS. 5 to 7, when the processing apparatus uses the scroll chuck 40, the adapter 11 is attached to the yatoy 2 and scrolled. Therefore, it is not necessary to remove the lens 5 from the yatoy 2 and fix the lens 5 to the yatoy that fits the scroll chuck 40. Also, the adapter 11 can be attached to the yatoy 2. Since it is only necessary to fit the first fitting portion 41 into the positioning recess 20, it is possible to carry out quickly and easily.

  Here, although this Embodiment showed the adapter 11 suitable for the scroll chuck 40, when using for various processing apparatuses, such as a cutting device provided with other types of chuck | zipper, and a grinding | polishing apparatus, it adapts to the chuck | zipper. If various adapters are prepared in advance and the yatoy 2 itself is used as a common tool for all devices, it is not necessary to attach and remove the lens 5 from the yatoi when the adapter 11 is replaced. Can do.

  Further, when the lens 5 composed of a semi-finished lens is classified according to size, for example, there are four types of 80, 75, 70, and 65 mmφ, so four types of Yatoi 2 and blocking ring 4 corresponding to the size of each lens are provided. If prepared, it can be applied to all lenses.

  2 ... Yatoi, 3 ... Alloy, 4 ... Blocking ring, 5 ... Lens, 7 ... Mounting portion, 10 ... Lens holder, 11 ... Adapter, 12 ... Lens mounting portion, 13 ... Fixed base, 18 ... Fitting portion, 19 DESCRIPTION OF SYMBOLS ... Recessed part, 20 ... Positioning recessed part, 21 ... Inside protrusion part, 40 ... Scroll chuck, 41 ... 1st fitting part, 42 ... 2nd fitting part, A ... Lens block apparatus.

Claims (5)

A lens attachment part and a fixed base integrally, and when fixing the lens to the lens attachment part via a low-melting-point alloy, the fixed base part is fixed to the attachment part of the specific device;
A first fitting portion adapted to the fixed base portion of the yatoy and a second fitting portion adapted to an attachment portion of another device different from the specific device, wherein the yatoy is attached to the other device; An adapter that is detachably attached to the yatoe when attached;
A combination of Yatoi and adapter consisting of   The combination of a yatoi and an adapter according to claim 1, wherein the specific device is a lens block device, and the other device is either a cutting device or a polishing device.   The combination of a yatoi and an adapter according to claim 1 or 2, wherein the second fitting portion of the adapter is fitted to the scroll chuck. A lens holder with a Yatoi, low melting point alloy, blocking ring and adapter,
The Yatoi integrally has a lens mounting portion where a lens is fixed via the low melting point alloy, and a fixed base portion fixed to the mounting portion of the specific device,
The blocking ring surrounds the outer periphery of the yatoy and supports the outer periphery of the lens, thereby forming a space into which the molten low melting point alloy is poured between the lens and the mounting portion of the specific device,
The adapter includes a first fitting portion that fits the fixed base portion of the Yatoi, and a second fitting portion that fits an attachment portion of another device different from the specific device. A lens holder that is detachably attached to the yatoy when attached to the other device.   The lens holder according to claim 4, wherein the specific device includes a lens block device, and the other device is one of a cutting device and a polishing device.

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