JPH0691526A - Plate material work device - Google Patents

Abstract

PURPOSE:To enable automation of polishing for the peripheral edges of plate material, highly efficient polishing, and reduction in production cost. CONSTITUTION:A work is fixed on a work table 10, both first and second polishing units 100 and 200 are moved along the side edge of the work table 10, and thus the two side edges of the work are polished. In this case, the work dimensions are inputted into a control device 400 by an operator and the positions of the polishing units 100 and 200 are detected by a position detection means beforehand, and thus the control device 400 moves the polishing units 100 and 200 with rapid traverse in the area not corresponding to the work, and moves at a specified polishing speed in the area corresponding to the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material processing apparatus for automatically polishing the periphery of a plate material.

[0002]

2. Description of the Related Art Conventionally, for chamfering the periphery of a large metal plate such as a stainless plate, it has been common practice to use a hand-held grinder. That is, a plate material to be processed is fixed on a table, and an operator carrying a grinder walks around the plate material and grinds the corners and ridges of the plate material with the grinder.

[0003]

However, in such a manual polishing operation, the work efficiency is extremely low. In addition, where metal dust scraped by the grinder is inevitable to scatter around, the work is done by holding the grinder, so the worker cannot keep away from the dust source, and the work using the grinder There is a problem that a person is placed in a poor working environment. In order to automatically perform such a polishing operation, the plate member is fixed on the work table, and the polishing unit is moved along the peripheral edge of the plate member, which is similar to a copying router or a numerical control router. Can be considered. However, this configuration has a drawback that the manufacturing cost becomes extremely high.

Therefore, an object of the present invention is to automatically grind the periphery of a plate material, which can improve the work efficiency and maintain a good working environment for the worker, and the manufacturing cost is low. An object is to provide a processing device for a certain plate material.

[0005]

A plate material processing apparatus according to the present invention includes a work table on which the plate material is placed, a work fixing means for fixing the plate material at a predetermined position on the work table, and a work table fixed on the work table. A polishing unit for polishing while moving the side edge of the work, a processing unit moving mechanism for moving the polishing unit along the side edge of the work, and a position detecting means for detecting the moving position of the polishing unit. And a machining dimension storing means for storing a value corresponding to the dimension of the work, and a machining unit moving mechanism based on the signal from the position detecting means and the information from the machining dimension storing means to correspond the polishing machining unit to the work. And a machining unit movement control device for performing fast-forward movement in a non-operating area and moving at a predetermined processing speed in an area corresponding to the work. Furnace has a feature.

[0006]

The plate material to be polished is fixed on the work table by the work fixing means. The polishing unit is moved along the side edge portion of the work table by the processing unit moving mechanism, and the peripheral edge of the plate material is polished accordingly. In this case, a value corresponding to the dimension of the work is stored in advance in the machining dimension storage means by an operator's input or automatic reading, and the machining unit movement control device detects the movement position of the polishing unit from the position detecting means. The machining unit moving mechanism is controlled based on the above signal and the information from the machining dimension storage means to move the polishing unit in a region that does not correspond to the workpiece at a fast-forwarding speed, and in the region that corresponds to the workpiece at a predetermined machining speed. Therefore, even when the plate material to be processed has a smaller size than the work table, the polishing unit can be quickly moved to the processing part of the plate material.

[0007]

As described above, according to the chamfering device of the present invention, since the periphery of the plate material can be automatically polished, the work efficiency is higher than the manual work by the grinder, and the work is performed on the dust generation source. There is no need for people to approach, so there is no deterioration in the work environment. Moreover, since the polishing unit can be moved linearly, the moving mechanism is simple and the manufacturing cost can be reduced, and the processing can be performed efficiently regardless of the size of the plate material to be processed. It can be carried out.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The chamfering device illustrated in this embodiment is for polishing the peripheral edge of a metal plate material (hereinafter referred to as "workpiece") such as a stainless plate. Although not shown,
A punch press device is provided adjacent to this device, the two corners of the work are preliminarily curved into corners by the punch press device, and are conveyed to the chamfering device by a work conveying device (not shown). The burrs at the corners are removed, and the straight portions between the corners are chamfered and polished.

<Structure> The planar structure of the chamfering device of this embodiment is shown in FIG. 1. Basically, the work table 10 and the first table provided on the lower side of the work table 10 in FIG. Polishing unit 100 and work table 1
No. 0 second polishing unit 200 provided on the right side in FIG.
And a control device 400 for controlling them. Hereinafter, the structure will be described in detail for each basic constituent part.

[A-1] Work Table 10 As shown in FIGS. 4 and 5, the work table 10 is provided with a smooth table plate 12 on the upper surface of a table base 11, and the table plate 12 has a flat surface. Innumerable small holes 12a in the entire area
(See FIG. 1) are formed, and these are selectively communicated with a blower and a vacuum pump (not shown) via solenoid valves. The blower blows air from the group of small holes 12a to work on the work table 1
The vacuum pump is for fixing the work on the work table 10 by sucking air from the group of small holes 12a. In addition, in order to deal with the difference in the size of the work,
Work table 1 by operating the manual valve
Of the small holes 12a formed in the entire area of 0, only those existing in a desired area can be activated.

On the upper surface of the work table 10, for example, a total of 4
A pusher mechanism 20 for the table is provided. They are,
The pressing plate 21 (see FIG. 4) is moved along the upper surface of the table plate 12 by the air cylinder 22, and two of the four pressing plates 21 move the pressing plate 21 in the vertical direction of the work table 10 (Y
Direction), and the remaining two units are provided for moving the pressing plate 21 in the lateral direction (referred to as the X direction). It should be noted that these can be mounted at any position on the work table 10 in order to cope with the difference in size of the work.

On the other hand, an X-direction guide mechanism 30 and a Y-direction guide mechanism 40 are provided at the lower right corner of the work table 10 shown in FIG. 1 in order to perform positioning by receiving the work pushed by the pusher mechanism 20. ing. Among them, the X-direction guide mechanism 30 is provided with two horizontal cylinders (not shown) in the table base 11 as shown in FIGS. 4 and 5, and the moving plate 32 is provided at the tip of the rod.
The vertical cylinder 33 is attached to the moving plate 32 so that the rod 33a extends vertically, and the horizontal receiving plate 34 is fixed to the upper end of the rod 33a. When the horizontal cylinder is in the advanced state and the rod 33a of the vertical cylinder 33 is raised in this state, the receiving plates 34 are positioned side by side with the table plate 12 of the work table 10 as shown in FIG. The work pushed by the pusher mechanism 20 is brought into contact with. At this time, since the receiving plate 34 is located away from the work table 10, the work is slightly projected from one side edge (the right side edge in FIG. 1) of the work table 10. Then, when the vertical cylinder 33 is moved downward and the horizontal cylinder is moved backward from this state, the receiving plate 34 and the moving plate 32 are retracted below the table plate 12 as shown by the chain double-dashed line in FIG. It will be in the state of doing.

The Y-direction guide mechanism 40 has a horizontal cylinder and a vertical cylinder 43 and has the same structure as the X-direction guide mechanism 30. Both cylinders are operated to receive the receiving plate as shown in FIG. The table 44 can be positioned away from the side of the table plate 12 (the lower edge of FIG. 1), and the work moved on the table plate 12 can be brought into contact there. As a result, the work can be in a state of slightly protruding from one side edge of the work table 10. Of course, by operating both cylinders in opposite directions, the receiving plate 44 and the moving plate 42 can be retracted below the table plate 12 as in the X-direction guide mechanism 30 (see the chain double-dashed line in FIG. 4). ).

The pusher mechanism 20 described above,
The X-direction guide mechanism 30 and the Y-direction guide mechanism 40 cooperate with a group of small holes 12a of the table plate 12 so that a processing portion on the periphery of the workpiece protrudes from two adjacent side edges of the work table 10. It functions as a work fixing means for fixing so that

[A-2] First polishing unit 100
About this polishing unit 100 is movable left and right in the figure along one side edge (the lower side edge in FIG. 1) of the work table 10. First, the structure for the movement will be described with reference to FIGS. (A-2-1) Processing Unit Moving Mechanism 110 A horizontally long base frame 110a is provided in the moving area of the polishing processing unit 100, and two X-direction guide rails 111 are fixed in parallel to the upper surface thereof. . A moving frame 112 is provided above the base frame 110a, and a slider 113 attached to the lower surface of the moving frame 112 is slidable on the X-direction guide rail 111, so that the moving frame 112 moves right and left along the base frame 110a in FIG. Can be moved. Then, the upper surface of the moving frame 112 is arranged in a direction orthogonal to the X-direction guide rail 111.
Book guide rails 114 are fixed in parallel, and the unit frame 10 of the first polishing unit 100 is fixed there.
1 is movably supported via a slider 115. Therefore, the first polishing unit 100 can move to the left and right in FIG. 1 on the base frame 110a, and can also move up and down (direction toward or away from the work table 10).

On the other hand, a feed screw shaft 116 is rotatably provided in the base frame 110a via a bearing 117, and a motor 11 is provided near one end portion inside thereof as shown in FIG.
8 is fixed, and the feed screw shaft 116 is driven by this motor 118.
Is driven to rotate. Then, as shown in FIG. 8, a female screw block 120 is screwed onto the feed screw shaft 116 via a mounting member 119, and this is fixed to the bottom surface of the moving frame 112. Therefore, when the feed screw shaft 116 is rotated by the motor 118, the moving frame 112 and thus the first polishing unit 100 moves in the X direction along the base frame 110a. A rotary encoder 121 is provided at the other end of the feed screw shaft 116 so as to function as a position detecting means for detecting the number of revolutions of the feed screw shaft 116, and thus the position of the first polishing unit 100. ing. Although not shown, the moving frame 112 is provided with the same configuration as the feed screw shaft 116 and the motor 118 described above, and the first polishing unit 100 is orthogonal to the base frame 110a by driving the motor. It can also be moved in the direction (Y direction).

The moving frame 112 is provided with a dust collecting device 122 together with the first polishing unit 100, and a belt polishing mechanism 130 and a foil polishing mechanism 170, which will be described later, are provided in the first polishing unit 100.
The dust scraped from the work can be collected and removed from the air. (A-2-2) Belt Polishing Mechanism 130 The schematic appearance thereof is shown in FIG. 9, and basically an endless sanding belt 131 can be driven by a motor (not shown). To describe this in detail, an arc-shaped guide 132 is fixed to the side surface of the unit frame 101 with bolts 133 as shown in FIG.
A rotating frame 134 is provided so as to face this. The arc-shaped guide 132 is the unit frame 10
1 draws an arc centered on the rotation axis A located substantially in the center of the front edge portion of 1. Further, the rotating frame 134 has the arc-shaped guide 1 described above.
For example, three pairs of guide rollers 135 are rotatably provided at positions sandwiching 32, and the rotating frame 134 is rotatable with respect to the unit frame 101 about the rotating axis A.

Further, in order to prevent the rotating frame 134 from being separated from the unit frame 101, the sliding piece 138 is provided with a supporting member 137 on the boss portion 136 provided between the guide rollers 135, and the sliding piece 138 is arcuate guide 132. Is attached so that it is sandwiched from the back side (Fig. 10).
reference). A semicircular driven gear 139 is fixed to the boss portion 134a around the rotation axis A at the front edge of the rotating frame 134, and the unit frame 101 has a drive gear that meshes with the driven gear 139. 140 is provided. The drive gear 140 is the unit frame 101.
A pulley 142, which is attached to a drive shaft 141 rotatably supported by the drive shaft 141 and is attached to the end of the coaxial shaft 141, can be rotated by a drive motor 143 (shown by a broken line in FIG. 6 only). In this way, the frame rotation mechanism 160 that rotates the rotation frame 134 about the rotation axis A is configured by rotationally driving the drive motor 143,
The rotation angle range is about 90 degrees. The rotation axis A extends substantially horizontally so as to extend along the peripheral edge of the work W placed on the work table 10.

As shown in FIG. 12, a driving roller 145, an idle roller 146 and a tension roller 147 are provided on the surface of the rotating frame 134 opposite to the unit frame 101, and the sanding is provided between these rollers. A belt 131 is stretched around. Of these, the drive roller 145 is rotationally driven by the drive motor 148 provided on the rotating frame 134 via the timing belt 149, and thereby causes the sanding belt 131 to travel at high speed. The tension roller 147 is attached to the rod of the cylinder 147a and applies a predetermined tension to the sanding belt 131 by operating the cylinder 147a. In addition, the idle roller 146 and the drive roller 1
45, a pressing pad 150 is provided on the back side of the sanding belt 131 so that the pressing pad 150 can be moved by the pad cylinder 152 while being guided by the linear guide 151 in the left-right direction in FIG. Has become. That is, when the pad cylinder 152 is operated to project, the pressing pad 150 moves to the work table 10 side and presses the sanding belt 131 against the work W as shown in FIG. 12, and the work W is polished. In addition, the pressing pad 150 has the soft pad 150b attached to the support block 150a and the soft pad 15b.
It is a structure covered with 0c. Further, a cover 153 is provided so as to cover the sanding belt 131 stretched between the rollers while leaving the front face portion, and the dust collecting hose 1 extends from the front lower part of the cover 153 to the intake port of the dust collecting device 122.
54 are connected.

(A-2-3) Foil polishing mechanism 170 The schematic appearance of this is shown in FIG. 13, and basically, a large number of polishing pieces 171 are provided on the periphery of the rotary base 171a.
The sanding wheel 171 provided with b can be rotationally driven by a motor (not shown).

This wheel polishing mechanism 170 also includes a frame rotating mechanism 160 similar to the belt polishing mechanism 130,
Drive motor 14 provided on top of unit frame 101
By rotating 3 to rotate the rotating frame 164, the rotating frame 164 can be rotated about the rotating shaft A by a desired angle.

A mounting board 173 having substantially the same shape as that of the rotating frame 164 is fixed to the rotating frame 164, and a pair of guide rails 174 extending in the front-rear direction (direction approaching or moving away from the work table 10) are fixed thereto. And
A moving frame 175 is provided on the mounting board 173 so as to face it, and a slider 176 fixed thereto is engaged with the guide rail 174 to allow the moving frame 175 to move back and forth with respect to the mounting board 173. ing.
As shown in FIG. 14, a drive shaft (not shown) is rotatably supported by the moving frame 175 via a bearing device 177 in a slightly inclined state, and the sanding wheel 171 is attached to the upper end thereof. At the same time, a pulley 178 is provided at the lower end. On the other hand, as shown only in FIG. 15, a drive motor 179 is provided on the back side of the mounting substrate 173.
And a belt 18 between the pulley 18 and the pulley 178.
0 is stretched, and the sanding wheel 171 is rotationally driven by this. The sanding wheel 171 is inclined with respect to the rotation axis A as shown in FIG. 14, so that the entire area of the polishing piece 171b of the sanding wheel 171 contacts the end surface of the work W evenly. A cover 181 having an open front surface is provided around the sanding wheel 171 and the inside thereof is connected to the dust collecting device 122 via a dust collecting hose 154.

On the other hand, as shown in FIG. 15, a bearing 182 is attached to the rear of the moving frame 175, and a feed screw shaft 183 is rotatably supported by the bearing 182. A pulley 184 is attached to the end of the feed screw shaft 183, and is rotated by a belt (not shown) stretched between the pulley 184 and a motor 185 (shown only in FIG. 13). This feed screw shaft 1
A female screw block 186 is screwed onto the tip portion of 83, and the female screw block 186 is movably supported by the guide rail 174 via a slider 187. Therefore, when the motor 185 is rotated, the female screw block 186 moves in the front-rear direction (direction toward or away from the work table 10). An air cylinder 188 is attached to the moving frame 175, and its rod 188a is connected to the female screw block 186. Therefore, the air cylinder 188 is attached.
Of the moving frame 175 when the rod 188a is extended.
As a result, the sanding wheel 171 moves forward (to approach the work table 10). A rotary encoder 189 is connected to the end portion of the feed screw shaft 183 so that the rotational speed of the feed screw shaft 183, and thus the position of the sanding wheel 171 in the Y direction, can be detected.

[A-3] Second polishing unit 200
About this polishing unit 200 is different from the first polishing unit 100 in that it does not include the foil polishing mechanism 170, and the other points are the first polishing unit 10
It is the same as 0 and is provided so as to be movable in the X direction and the Y direction by the processing unit moving mechanism 210 provided with the belt polishing mechanism 230. That is, as shown in FIG. 1, a base frame 210a is provided on the right side of the work table 10, and a moving frame 212 moves in the vertical direction (Y direction) of FIG. 1 on two Y-direction guide rails 211 fixed to the base frame 210a. Supported as possible. A dust collector 222 is provided on the moving frame 212, and the guide rail 2
The second polishing unit 200 is supported via 14 so as to be movable in the X direction (see FIG. 3). A belt polishing mechanism 230 is provided on a unit frame (not shown) of the second polishing unit 200 via a frame rotating mechanism 260, and the frame rotating mechanism 26 is provided.
0 can be rotated within an angle range of about 90 degrees around a substantially horizontal rotation axis extending in the direction (Y direction) orthogonal to the rotation axis A along the periphery of the work. Although the belt polishing mechanism 230 is not shown in detail, it has the same structure as the belt polishing mechanism 130 of the first polishing processing unit 100 shown in FIGS. 9 to 12, and has an endless sanding belt between a plurality of rollers. It is the one that can be run over.

[A-4] Controller 400 In the operation panel 400a shown in FIG. 1, the work table 10, the first and second polishing units 10 described above are provided.
0,200, these processing unit moving mechanisms 110,2
A control device 400 is provided to control the 10 and the like, which also functions as a processing unit movement control device. As shown in FIG. 16, the electrical configuration is centered on the central processing unit 401, and drives the load group 403 while receiving a signal from the sensor group 402. Sensor group 40
2 includes a pressure sensor (not shown) communicating with the group of small holes 12a of the work table 10, a rotary encoder 121 of each processing unit moving mechanism 110, 210, a limit switch (not shown), and the like. In addition, the load group 403
The solenoid valve (not shown) for driving each air cylinder, each processing unit moving mechanism 110,
There are a drive motor 118 of 210, a drive motor 143 of the belt polishing mechanism 130, a drive motor 172 of the wheel polishing mechanism 170, a motor 185, and the like.

On the other hand, the operation portion of the operation panel 400a is provided with a liquid crystal display device 404 and a touch switch 405 located on the surface thereof. The liquid crystal display device 404 is
It displays an operation menu for setting various operation conditions and operation data based on a signal from the central processing unit 401 and also functions as a display unit of the touch switch 405. FIG. 17 shows a screen example that functions as an operation data input screen among various display screens. Here, five pieces of data such as a work number, a work length (dimension in the Y direction), a work width (dimension in the X direction), a work thickness, and a corner radius are input, and from the bottom of the liquid crystal display device 404, 1 to 5 are input. A ten-key input unit 406 including numeric keys up to 0, a clear key, an enter key, etc. is formed, and five display units 407 are provided for displaying each value input here.
Are formed. Then, the above-mentioned data relating to the work size input here is stored in the memory 408 which is a processing size storage means connected to the central processing unit 401.

<Operation> Next, the operation of the processing apparatus of this embodiment will be described with reference to FIGS. The processing device basically operates in the order shown in FIG.

[B-1] Input of data relating to work and initial setting, etc. Operation mode setting by the operator (step S10)
0), the origin of each part is set (step S200),
Further, the work size is input on the operation panel 400a,
This is stored in the memory 408 (step S30).
0). Also, depending on the size of the work, the work table 10
The upper pusher mechanism 20 is attached at an appropriate position,
In addition, the manual valve of the work table 10 has a table plate
Are switched so that the group of small holes 12a in the appropriate area is activated.

[B-2] Positioning and Fixing of Work (Step S400) The work is suspended from the ceiling by a transfer device (not shown) and supplied onto the work table 10. At the beginning of supplying the work, the air from the blower is the small hole 12a of the table plate 12.
Ejected from the group, the work can move freely on the table plate 12. Further, in this state, the receiving plates 34 of the X-direction guide mechanism 30 and the Y-direction guide mechanism 40,
Reference numeral 44 has advanced to the lateral position of the table plate 12 as shown in FIGS. Therefore, when a signal indicating that the work has been conveyed onto the work table 10 is received from the conveying device, the control device 400 activates the pusher mechanism 20 on the work table 10 to push the work in the X direction and the Y direction to guide each work. Receiver plates 34, 44 of the mechanisms 30, 40
Abut. Thereafter, the solenoid valve is switched to connect the small holes 12a group of the work table 10 to the vacuum pump, whereby the work is sucked and fixed on the work table 10. Then, the air cylinders of the X-direction guide mechanism 30 and the Y-direction guide mechanism 40 are activated, and the receiving plates 34, 44 and the moving plate 3 are moved.
2 and 42 are retracted below the table plate 12. At this stage, the workpiece is fixed in a state in which the processed portions of the peripheral edge (the right and lower two side edge portions in FIG. 1) are slightly projected from the peripheral edge of the table plate 12.

[B-3] Polishing of work (step S
500) Before starting the polishing process, in the first polishing unit 100, the belt polishing mechanism 130 and the foil polishing mechanism 170 are provided.
Each frame rotating mechanism 160 positions the rotating frame 164 at an intermediate angle. Therefore, as shown in FIG. 12, for example, the sanding belt 131 and the sanding wheel 171 are opposed to each other from the side of the work.

In the following description, in order to clarify the polished portion of the work, each part of the work will be described with reference numerals as shown in FIG. The order of polishing by the first and second polishing units 100 and 200 is as shown in FIG. In the figure, the symbols indicating the polishing portions are underlined when the polishing proceeds in the opposite direction. A typical one of these polishing steps will be described.

[B-3-1] Polishing of the flat surface RL0 at the left corner When it is detected that the positioning and fixing of the work is detected,
Control device 40 functioning as a processing unit movement control device
Based on the signal from 0, the first polishing unit 100 at the origin position is first moved rightward in FIG. 1 along the X-direction guide rail 111. In this case, as shown in FIG. 19, first, the width dimension of the work stored in the memory 408 is read to recognize the position of the left end of the work. Then, while reading the position of the unit 100 (step S503), the unit 10 is moved to the left end of the work.
0 is moved at high speed (step S502). The reason for doing this is to shorten the processing time by moving the unit 100 at a high speed in the region where the work does not exist and the processing operation need not be performed.

As a result of the high speed movement, the sanding wheel 17
When the right side of 1 reaches the left corner of the work, the drive motor 143 of the belt polishing mechanism 130 and the motor 185 of the wheel polishing mechanism 170 are driven to drive the sanding belt 131 and the sanding wheel 171 and dust collection. The device 122 is activated (step S50).
5).

In this state, the air cylinder 188 of the wheel polishing mechanism 170 is projected for a predetermined time based on a signal from the control device 400. Then, the air cylinder 188
Sanding wheel 171 that rotates while the projecting
Moves toward the work side, and the polishing pieces 171b of the sanding foil 171 rub the left corner of the work at a high speed, so that the left corner of the work is polished. In this case, since the polishing pieces 171b of the sanding wheel 171 collide with the corners of the work in a state of being spread in the radial direction by the centrifugal force, a relatively large area of the corners is curvedly polished by the polishing pieces 171b. It

[B-3-2] Polishing of Front Edge Flat Surface X0 (Outward Path) Next, the first polishing unit 100 moves toward the right corner along the X-direction guide rail 111, At the same time, the pad cylinder 152 of the belt polishing mechanism 130 operates to project. Then, the running sanding belt 13
1 is a flat surface X of the front edge of the work due to the pressing pad 150.
Since it is pressed against 0, the front edge flat surface X0 of the workpiece is sequentially polished toward the right corner. When the first polishing unit 100 reaches the right corner (step S507)
"Yes"), the pad cylinder 152 is retracted and the pressing pad 150 is retracted, so that the sanding belt 131 is separated from the side edge portion of the work, and the first polishing of the front edge flat surface X0 is completed.

If the sanding belt 131 is used to polish the front edge straight portion in this manner, the sanding belt 131
Since the polishing portion of 1 is flat, the belt polishing mechanism 130 and thus the first polishing unit 100 may be linearly moved along the X-direction guide rail 111.

[B-3-3] Polishing of Right Corner Flat Surface RR0 Next, the first polishing unit 100 is slightly moved so that the left side of the sanding wheel 171 faces the right corner of the work. become. Then, again, based on the signal from the control device, the air cylinder 1 of the wheel polishing mechanism 170 is restarted.
88 protrudes for a predetermined time and sanding wheel 1
The polishing pieces 171b of 71 come to rub the left corner of the work at high speed, and the right corner of the work is polished. Also in this case, similarly to the case of the left corner described in [B-3-1], the relatively wide region of the right corner of the work is curvedly polished by the group of polishing pieces 171b.

[B-3-4] Re-polishing of the front edge flat surface X0 (return path) This time, the first polishing unit 100 is moved along the X-direction guide rail 111 to the left side corner in the opposite direction. At the same time, the pad cylinder 15 of the belt polishing mechanism 130
2 operates to project (step S508). This allows
The running sanding belt 131 is the pressing pad 150.
Since it is pressed against the front edge flat surface X0 of the work, the front edge flat surface X0 of the work is sequentially polished toward the left corner. Then, when the first polishing unit 100 reaches the left side corner and the second polishing of the front edge flat surface X0 of the work is completed, the pad cylinder 152 is retracted and the sanding belt 131 is moved to the side edge of the work. Get away from.

[B-3-5] Polishing of Right Side Flat Surface Y0 The second polishing unit 200 guides in the Y direction at a predetermined timing before the first polishing unit 100 starts returning toward the left corner. The movement starts along the rail 211 toward the lower side in FIG. Regarding the movement of the second polishing unit 200 as well, the unit 200 is moved at high speed up to the end of the work, similarly to the operation of the first polishing unit 100 shown in FIG. When this arrives at the processing end of the work, the unit 200 is switched to low speed movement as in the case of the first polishing processing unit 100, and the pad cylinder of the belt polishing mechanism 230 is operated to project so that the sanding belt is moved. Is pressed against the flat surface Y of the right side of the workpiece.
It will be polished while moving 0. When the second polishing unit 200 reaches the lower right corner of the work, the unit 200 is now moved in the opposite direction and the flat surface Y0 is polished again.

[B-3-6] Polishing of Lower Ridge RL1 of Left Corner When the polishing unit 100 returns to the left corner, the drive motor 162 of the frame rotating mechanism 160 is rotated and the rotating frame 164 is rotated. Be moved. Then, the rotating frame 16
4 rotates about 45 degrees downward, and the belt polishing mechanism 13
0 sanding belt 131 and foil polishing mechanism 17
The 0 sanding wheel 171 corresponds to the lower ridge line of the work. Then, from this state, the air cylinder 188 of the wheel polishing mechanism 170 is operated to project for a predetermined time, and the lower ridge line portion RL1 of the left corner of the work is polished by the sanding wheel 171.

[B-3-7] Polishing of the upper ridge line RR2 of the right corner When the polishing unit 100 is located at the right corner and the polishing of the lower ridge line RR1 of the right corner is completed, the frame rotation mechanism 1
The drive motor 162 of 60 is rotated, this time the rotating frame 164 is rotated in the opposite direction by about 90 degrees, and the sanding belt 131 of the belt polishing mechanism 130 and the sanding wheel 171 of the wheel polishing mechanism 170 are positioned on the upper ridge portion of the work. I will correspond. Therefore, since the air cylinder 188 of the foil polishing mechanism 170 is projected from this state for a predetermined time, the sanding wheel 171 polishes the upper ridge line RR2 of the right corner of the work. Further, the remaining two corners of the four corners of the work are reversed by feeding the work again to the punch press machine to perform corner cutting, and by supplying this to the work table 10 side of the apparatus of this embodiment, It is automatically polished in the same way as it was done.

The above-mentioned second polishing unit 2
The timing at which 00 starts moving is set so that the polishing units 100 and 200 do not interfere with each other at the right corner of the work. The basic idea in this embodiment for that purpose is as follows.

Structure for Preventing Interference In order for both polishing units 100 and 200 to interfere with each other, the first polishing unit 100 moves toward the right corner of the work and moves to the second polishing unit 200. It is necessary to enter the interference possible area (shown by hatching in FIG. 22). Since the first polishing unit 100 reciprocates in the X direction, the time during which the unit 100 exists in the interference possible area can be represented as shown in the graph of FIG. In the figure, the horizontal axis indicates time, and the vertical axis indicates each unit 1
The first polishing unit 100 starts moving from the origin position at time t0, and the unit 100 can interfere with each other between t1 and t2 and between t3 and t4. Is present in the.

On the other hand, the second polishing unit 200 starts moving at time t10, moves at high speed until time t11, and switches from the time t11 to low speed to polish the flat surface Y0 of the right edge of the work, It is shown that the vehicle reverses at time t12 and moves upward in FIG. 1 this time. If the straight lines indicating the Y direction positions of the polishing units 100 and 200 shown in FIG.
200 will interfere and collide.

By the way, each polishing unit 100, 2
Since the high speed movement speed and the low speed movement speed of 00 are preset, if the length and width dimensions of the work are known, FIG.
Each straight line of is uniquely determined. For example, in the straight line indicating the position of the second polishing unit 200, the inclination between time t10 and time t11 is determined by the moving speed of the high speed movement,
The inclination between time t11 and time t12 is determined by the moving speed of the low speed movement. Therefore, the movement start time t10 of the second polishing unit 200 may be determined so that the straight lines indicating the positions of the polishing units 100 and 200 do not intersect with each other according to the length and width of the workpiece. Of course, if the intersection of the two straight lines cannot be avoided only by adjusting the movement start time t10, one polishing unit may be put on standby. Time t at which these two straight lines do not intersect
The calculation for 10 is performed by the central processing unit 4 of the control device 400.
It can be performed by referring to the value stored in the memory 408 at 01.

<< Effects of the Embodiment >> As described above, according to this embodiment, the work W to be chamfered is processed by the work table 10.
The first and second polishing units 100 and 200 are mounted on the table, fixed in position, and moved along one and the other of the two side edge portions of the work table 10 while the peripheral edge is polished. In this embodiment, the first polishing unit 100 is provided with a belt polishing mechanism 130 and a foil polishing mechanism 170, and a sanding belt 131 polishes a processing portion on one side edge of the work W, and
The two corners of the work W are polished by the sanding wheel 171 of the wheel polishing mechanism 170. Further, since the belt polishing mechanism 130 is provided in the second polishing unit 200, the sanding belt 131 of the belt polishing mechanism 130 polishes the processed portion of the other side edge of the work W. As a result, the peripheral portion of the work W is automatically polished, and the work efficiency is higher than that of the conventional manual work using a grinder. Further, since the worker only needs to operate the control device and monitor the movement, it is not necessary to approach the source of the dust, so that the working environment is not deteriorated. In particular, each polishing mechanism 130, 170
Since a dust collecting device 122 is attached to collect dusts generated by polishing, the working environment can be maintained extremely excellent.

Moreover, since the corners of the periphery of the work W are ground by the rotation of the sanding wheel 171, the sanding wheel 171 can be used even if the first polishing unit 100 does not move along the curved line of the corner. Can be polished in a curved surface by a linear movement in which the sanding wheel 171 is moved back and forth while facing each corner. On the other hand, the straight portion between the corners of the work W is polished by linearly moving the belt polishing mechanism 130 that runs the sanding belt 131. Therefore, the first and second polishing units 100 and 200 need only be moved linearly,
The structure for moving the polishing mechanism is remarkably simpler than that of a copying router or a numerical control router, which requires complicated movement of the polishing mechanism including a curved movement, and the manufacturing cost can be reduced.

Further, the control device 400 controls both processing units 10 based on the input both length and width dimensions of the work.
0, 200 is moved fast-forwarding in a region not corresponding to the work, and is moved at a predetermined processing speed in the region corresponding to the work. As a result, even when the work has a size smaller than that of the work table 10, the polishing units 100 and 200 can be quickly moved to the work part of the work, and the efficiency can be further improved. Further, in particular, in the present embodiment, in view of the provision of the two polishing units 100 and 200, both polishing units 100 and 200 are moved at a timing not interfering with each other. As a result, efficient machining can be enabled while reliably preventing an accident due to interference.

<< Other Embodiments >> The present invention is not limited to the above embodiments, and the following modifications are possible.

(1) In the above embodiment, the two corners of the work are polished. However, the invention is not limited to this, and a work reversing mechanism is provided to reverse the work by 180 degrees, thereby A configuration may be adopted in which two corners are polished and the four corners are automatically polished.

(2) In the above embodiment, the operator inputs both the length and width of the work, but the present invention is not limited to this. For example, an image processing device equipped with a proximity switch or a CCD sensor, etc. May be provided to automatically detect both the length and width of the work, and to control both polishing units based on this.

[Brief description of drawings]

FIG. 1 is an overall plan view

[Fig. 2] Overall side view

[Fig. 3] Overall front view

FIG. 4 is a side view showing the X-direction and Y-direction guide mechanisms.

FIG. 5 is a front view showing the X-direction and Y-direction guide mechanisms.

FIG. 6 is a side view showing the frame of the first polishing unit.

FIG. 7 is a vertical sectional side view showing a moving mechanism of a first polishing unit.

FIG. 8 is a vertical sectional front view showing a moving mechanism of the first polishing unit.

FIG. 9 is a perspective view of a belt polishing mechanism.

FIG. 10 is a vertical sectional view showing a rotating mechanism of a belt polishing mechanism.

11 is a sectional view taken along line XI-XI of FIG. 10 showing the frame rotating mechanism.

FIG. 12 is a side view of the belt polishing mechanism.

FIG. 13 is a perspective view of a wheel polishing mechanism.

FIG. 14 is a vertical cross-sectional view showing a moving mechanism of a wheel polishing mechanism.

FIG. 15 is a cross-sectional view showing a moving mechanism of the wheel polishing mechanism.

FIG. 16 is a block diagram of a control device.

FIG. 17 is a plan view showing a display example of a liquid crystal display device.

FIG. 18 is a schematic flowchart showing the operation of the processing apparatus.

FIG. 19 is a flowchart showing the operation of the first polishing processing unit.

FIG. 20 is a perspective view schematically showing a polished portion of a work.

FIG. 21 is a process chart showing the processing sequence of each polishing portion.

FIG. 22 is a schematic plan view showing an interference possible area of both polishing units.

FIG. 23 is a graph showing the operation of both polishing processing units.

[Explanation of symbols]

 10 ... Work table 100, 200 ... 1st and 2nd polishing processing unit 110 ... Processing unit moving mechanism 121 ... Rotary encoder (position detection means) 400 ... Control device (processing unit movement control device) 408 ... Processing dimension storage means

Claims (1)

[Claims] 1. A work table for polishing a peripheral edge of a plate material, a work table on which a plate material to be processed is placed, a work fixing means for fixing the plate material at a predetermined position on the work table, and the work table. A polishing unit for polishing while moving the side edge of the work fixed above, a processing unit moving mechanism for moving the polishing unit along the side edge of the work, and a moving position of the polishing unit. Position detecting means for detecting the machining unit, machining dimension storing means for storing a value corresponding to the dimension of the work, and the machining unit moving mechanism based on the signal from the position detecting means and the information from the machining dimension storing means. The polishing processing unit is controlled to move rapidly in an area that does not correspond to the work, and a predetermined processing is performed in an area that corresponds to the work. Processing apparatus of the plate material formed by a machining unit movement controller for moving at speed.