JP2759919B2 - V-groove processing 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 V-grooving machine for forming a V-groove having a predetermined opening angle on a work member such as an extruded aluminum material or a bent sheet metal by a rotary saw blade.

[0002]

2. Description of the Related Art Generally, a frame member such as a window frame is formed by forming a required number of V-grooves having a predetermined opening angle on a work member made of an extruded aluminum material or a bent sheet metal, and bending the V-groove portion at the V-groove portion. It is manufactured by matching both cut surfaces. Conventionally, as a V-groove processing machine for forming a V-groove in a work member, one in which the angle of the V-groove is changed by rotating the work member on the same plane (for example, Japanese Utility Model Application Laid-open No. 64-52616), An angle change is performed by changing the direction of a motor on which a rotary saw blade is axially mounted, and a device using two rotary saw blades is applicable as a V-grooving machine (for example,
It is known that there is Japanese Patent Publication No. 1-13971.

[0003] In the above, in order to machine one surface of the V-groove with one rotary saw blade, a work member is cut when the rotary saw blade is lowered, and then a clamp device for supporting the work member is provided. It rotates so as to correspond to a predetermined opening angle, and then the other surface of the V-shaped groove is cut when the rotary saw blade is raised next. This type of processing machine has the advantage that the position of the cutting edge of the rotary saw blade during V-groove processing does not change at all because the clamp device itself that supports the work member is rotated.

[0004] In the above, in order to change the angle after cutting one surface of the V-groove after having one rotary saw blade, the direction of the saw blade is changed by another motor and the X-axis is moved by the moving mechanism. The V-groove is moved in the direction and the Y-axis direction to position the cutting point of the V-groove, and then the other surface of the V-groove is cut.

[0005] In the above, there are three dies in which gaps of V-grooves having a predetermined opening angle are formed, and two rotary saw blades provided to be able to advance and retreat in these gaps. The structure is such that the V-groove can be machined by advancing and retracting into the respective gaps.

[0006]

However, in the prior art described above, although there is no change in the position of the cutting edge of the rotary saw blade, a rotating mechanism for rotating the work member itself when changing the angle of the V-groove is required, and the apparatus is complicated. And the cost increases. Further, in the above, after cutting one surface of the V-groove, the direction of the rotary saw blade must be changed to change the angle, and the motor is mainly driven to rotate the rotary saw blade at the time of changing the angle. Therefore, there is a problem that the cutting edge point shifts when cutting one surface of the V-groove and when cutting the other surface, resulting in poor machining accuracy. In addition, the rotary saw blade or the work member must be moved in the X-axis direction and the Y-axis direction, which complicates the apparatus. Furthermore, in the above, since two rotary saw blades are used and each surface of the V-groove is cut by the corresponding rotary saw blade, it is difficult to match the cutting edge points, and there is a problem that machining accuracy is poor.

Accordingly, an object of the present invention is to provide a V-grooving machine capable of improving the cutting accuracy without complicating the apparatus and without shifting the cutting edge point at the time of V-grooving.

[0008]

The V-grooving machine according to the present invention comprises:
A support vertically erected vertically, a vertical drive mechanism for moving the support up and down, and an upper angle changing motor mounted downward at the upper end of the support with its rotation axis vertical. An upper arm that is mounted on a rotation shaft of the angle changing motor and swings on a horizontal plane by rotation of the angle changing motor, and an upper drive motor that is mounted on the arm with its rotation axis horizontal. An upper rotary saw blade axially mounted on a rotary shaft of the drive motor, and a lower rotary saw blade mounted on a lower end side of the support so that its rotary shaft is coaxial with the rotary shaft of the upper angle changing motor. The angle change motor on the side, a lower arm which is mounted on the rotation shaft of the angle change motor and swings on a horizontal plane by the rotation of the angle change motor, is mounted on this arm with the rotation axis being horizontal. Drive mode A lower rotary saw blade axially mounted on the rotary shaft of the drive motor, and a work table provided between the upper and lower rotary saw blades for holding a work member, The two drive motors are attached to the respective arms so that the cutting edges on one end side of the two rotary saw blades overlap with each other, and the tangential lines contacting both the cutting edges on the one end side and the rotating shafts of the two angle changing motors. And the two angle changing motors are arranged so that the rotation centers of the motors coincide with each other.

[0009]

When a V-groove is formed in a work, a work table on which the work is provided is set. First, the cutting angles of both rotary saw blades as viewed from a plane are set by both angle changing motors. , The two rotary saw blades are rotated. Next, the support is lowered by the drive mechanism,
One surface of the V-groove is cut by the upper rotating saw blade, then the support is raised, the other surface of the V-groove is cut by the lower rotating saw blade, and a plurality of preset grooves are cut. A V-groove having a set angle is continuously formed at the work position. In this case, the rotating saw blades are arranged so that the cutting edges of the upper and lower rotating saw blades overlap when viewed from above, and the rotating shafts of both angle changing motors are arranged on the tangent of both overlapping cutting edges,
Since the angle adjustment of both rotary saw blades is performed centering on this tangent line, the cutting edge points of both rotary saw blades are not shifted when V-grooves are formed, and high-precision machining can be performed. Also, since it is not necessary to change the direction of the work as in the past,
The apparatus does not become complicated, and high processing accuracy can be maintained. Furthermore, the V-groove of one work can be continuously machined according to a preset position and angle, which simplifies the work and reduces the production cost.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The V-grooving machine 1 of the present embodiment, as shown in FIGS.
A plate-like support 4 is provided so as to be vertically movable. A rack 5 is formed vertically on the back surface of the support 4, and a pinion 6 meshes with the rack 5. The pinion 6 is meshed with a gear 8 which is mounted on a rotating shaft of a vertical motor 7 supported by the frame 3, and the support 4 moves up and down by driving the vertical motor 7.

At the upper end and lower end of the support 4,
Support members 9a and 9b are mounted horizontally toward the front side, and angle change motors 10a and 10b are supported by the support members 9a and 9b, respectively. The two angle changing motors 10a and 10b are arranged with their respective rotation axes vertical, the upper angle changing motor 10a is provided downward, and the lower angle changing motor 10b is provided upward.
The rotating shafts of the angle changing motors 10a and 10b respectively have arms 11a and 1 that swing horizontally with the rotating shafts.
A base end of 1b is mounted on a shaft, and drive motors 12a and 12b are supported at distal ends of the arms 11a and 11b. These drive motors 12a and 12b are mounted so that their rotation axes are horizontal, and are provided such that the motors face each other. Disk-shaped rotary saw blades 13a, 13b are attached to the rotating shafts of the respective drive motors 12a, 12b, and the upper rotary saw blade 13a is rotated by the drive of the upper drive motor 12a as shown by the arrow in the drawing. When the lower drive motor 12b is driven, the lower rotary saw blade 13b rotates as shown by the arrow in the drawing. And the upper rotary saw blade 13
When cutting at a, the support 4 is moved downward, and when cutting with the lower rotating saw blade 13b, the support 4 is moved upward.

Each of the drive motors 12a and 12b is connected to each of the arms 11a and 11b so that the front edges of the rotary saw blades 13a and 13b are overlapped when viewed from above (a plane).
And both angle changing motors 10a
As shown in FIGS. 1 and 2, the support members 9a, 9b, 10c, and 10b are positioned so that the rotation centers of the rotation shafts of the rotation members 10a and 10b are located on a tangent line OO 'that is in contact with the front edge of the rotary saw blades 13a and 13b.
9b. Therefore, both rotary saw blades 13a and 13b are maintained in a state where the front edge is overlapped, and the angle θ of both rotary saw blades 13a and 13b is set by driving both angle changing motors 10a and 10b. In this case, since the rotation centers of both the angle changing motors 10a and 10b are located on the tangents of both the cutting edges, the weights of both the cutting edges may be shifted when viewed from a plane. Absent. In the drawing, reference numeral 14 denotes an operation panel provided with a control device including a microcomputer.

Further, on the front side between the upper rotary saw blade 13a and the lower rotary saw blade 13b, as shown in FIGS. 3 is provided. This worktable 1
5 can be moved in the front-rear direction by a drive mechanism (not shown), and can be moved in the left-right direction by a motor 16, as shown in FIGS. Further, the work table 15 is provided with side clamps 17 and 18 and a main clamp 19, and the left and right sides of a work 20 such as an extruded aluminum material are supported by the side clamps 17 and 18.
The cut is supported by the main clamp 19.
The main clamp 19 is cut out in a V-shape along the rotating saw blades 13a and 13b that overlap when viewed from the horizontal.

Next, FIG.
A case where a V-shaped cut is formed in the work 20 by extruding a bent aluminum as shown in FIG. 6 will be described. First, the work (aluminum extruded material) 20 is placed on the work table 15 and the work clamp button of the operation panel 14 is pressed.
It is held by 7 and 18 and moves to a preset position in the front-back direction. The work table is moved to, for example, a cutting position where the thickness t shown in FIG.

Next, when an automatic start button is pressed, as shown in FIG. 4, the work table 15 moves rightward by L1 to a preset first cutting position a, and a preset cutting angle is set. By controlling the angle changing motors 10a and 10b to θ, both rotary saw blades 1 are controlled.
The angle between 3a and 13b is changed. Rotating saw blade 13a, 1
When the angle of 3b is set, the sliding surface of the saw blade angle is locked, and at the same time, the work 20 on the work table 15 is locked.
Is held by the main clamp 19.

Further, the upper and lower rotary saw blades 13a, 13b are rotated by the driving of the respective drive motors 12a, 12b, and the support body 4 is moved downward by the up / down motor 7 to lower the upper rotary saw blade 13a. 5 is performed, and then the support 4 is raised and the lower rotary saw blade 13b is raised, whereby the cutting is performed.
The cutting of the middle B line is performed, and a V-shaped cutting is performed. When the cutting at point a is completed, the main clamp 1
9, the work table 15 is moved rightward by the distance L2 to the next preset cutting position b, and at the same time, the lock of the saw blades 13a and 13b is released and the cutting angle θ is set to the preset cutting angle θ. Both saw blades 13a, 13
b is set, and after this setting, the saw blade 13a, 1
3b is locked, the work 20 is held by the main clamp 19, and the cutting at the point b is performed in the same manner as described above. Such an operation is automatically performed a preset number of times. For example, V grooves (a to c) shown in FIG. 7 are processed. When all cutting operations for one workpiece are completed, the angle between the saw blades 13a and 13b returns to 0 °,
The work table 15 returns to the position before the work, the holding of the side clamps 17, 18 and the main clamp 19 is released, and the work for one work is completed. The work 20 thus processed is formed into a frame shape by bending at a V-groove portion, for example, as shown in FIG.

[0017]

As described above, according to the present invention, the rotary saw blades are arranged so that the blade edges of both the upper and lower rotary saw blades overlap each other when viewed from the plane, and the tangential line between the two overlapping blade edges is provided. Since the rotary shafts of both angle changing motors are provided, the angle of both rotary saw blades can be adjusted centering on the tangent line, and the angle can be easily adjusted. The cutting edge point does not shift, and highly accurate machining becomes possible. Further, since the direction of the work table is not changed at the time of V-groove processing, the apparatus is not complicated, and high processing accuracy can be maintained. Furthermore, since one workpiece can be continuously machined to a preset position and angle, the work is simplified,
Manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a right side view of a V-grooving machine according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a V-groove processing machine.

FIG. 3 is a front view of the V-grooving machine.

FIG. 4 is a plan view of a work table.

FIG. 5 is a plan view of a work.

FIG. 6 is a right side view of the work.

FIG. 7 is a plan view of a work after processing.

FIG. 8 is a plan view of a work formed in a frame shape.

[Explanation of symbols]

 Reference Signs List 1 V-grooving machine 4 Support 5, 7, 8, 9 Driving mechanism 10a, 10b Angle changing motor 11a, 11b Arm 12a, 12b Driving motor 13a, 13b Rotating saw blade 15 Work table 20 Work member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-141498 (JP, A) JP-A-57-148603 (JP, A) JP-A-63-232908 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) B23D 45/14 B27B 5/20 B27B 5/00

Claims (1)

(57) [Claims] 1. A supporter vertically erected vertically, a vertical drive mechanism for moving the supporter up and down, and mounted downward on the upper end of the supporter with its rotation axis being vertical. An upper angle changing motor, an upper arm which is mounted on a rotating shaft of the angle changing motor and swings on a horizontal plane by rotation of the angle changing motor, and is mounted on the arm with its rotating shaft horizontal. An upper drive motor, and an upper rotary saw blade axially mounted on a rotation shaft of the drive motor;
A lower angle change motor mounted on the lower end side of the support body with its rotation axis being coaxial with the rotation axis of the upper angle change motor and mounted upward, and the lower axis change motor is axially mounted on the rotation axis of the angle change motor. A lower arm that swings on a horizontal plane by the rotation of the angle changing motor, a lower drive motor whose horizontal axis is mounted on the lower arm, and a shaft mounted on the rotary axis of the drive motor. A lower rotating saw blade, and a work table disposed between the upper and lower rotating saw blades for holding a work member, and a cutting edge at one end of the two rotating saw blades when viewed from a plane. The two drive motors are attached to each arm so that the two overlap, and the tangents in contact with both of the cutting edges on the one end side and the rotation centers of the rotation shafts of the two angle change motors coincide with each other, so that both the angle change motors are used. It is noted that V groove processing machine to be.