JP2555998Y2 - Plate chamfering device - Google Patents

Description

[Detailed description of the invention]

[0001]

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

[0002]

2. Description of the Related Art For example, in order to chamfer the periphery of a large metal plate such as a stainless steel plate, it has conventionally been general 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 corners and ridges of the plate material with the grinder.

[0003]

However, the work efficiency in such a manual polishing operation is extremely low. In addition, since metal dust shaved by the grinder cannot be avoided to scatter around, workers work with the grinder by hand, so workers cannot stay away from the source of dust and workers who use the grinder Has a problem that the working environment is deteriorated.

In order to perform such a polishing operation automatically,
A configuration similar to a scanning router or a numerical control router, in which a plate material is fixed on a work table and a polishing blade attached to a vertical main shaft is moved along the peripheral edge of the plate material, can be considered.

However, this configuration has a disadvantage that the manufacturing cost is extremely high.

Accordingly, an object of the present invention is to automatically perform chamfering of the peripheral edge of a plate material, thereby improving work efficiency and maintaining a good work environment for workers, and at a low manufacturing cost. An object of the present invention is to provide an apparatus for chamfering a plate.

[0007]

A plate material chamfering apparatus according to the present invention comprises a work table on which a plate material is placed, and a plate material having a peripheral processing portion protruding from two adjacent side edges of the work table. A work positioning and fixing means for positioning and fixing; and first and second polishing units movably provided along one and the other of the two side edges of the work table, wherein the first polishing is performed. The unit is
A belt polishing mechanism formed by running an endless sanding belt so as to be able to run between a plurality of rollers, and a wheel polishing mechanism rotatably provided with a sanding wheel provided with a large number of polishing pieces on a peripheral edge, wherein the sanding belt has The second polishing unit is provided with a belt polishing mechanism and a sanding foil of a sanding wheel of a wheel polishing mechanism. It is characterized in that it is configured to polish the processing portion on the peripheral edge of the plate material.

[0008]

The plate material to be chamfered is placed on a work table, and is positioned and fixed by the work positioning and fixing means in such a manner that a peripheral processing portion projects from two adjacent side edges of the work table. Then, the first and second polishing units grind the peripheral edge of the plate material while moving along one and the other of the two side edges of the work table. In this case, a belt polishing mechanism is provided in the second polishing processing unit, and a processing portion on one side edge of the plate material is polished by the sanding belt. Further, since the first polishing unit is provided with a belt polishing mechanism and a wheel polishing mechanism, the processing portion on the other side edge of the plate material is polished by the sanding belt of the belt polishing mechanism, and the wheel polishing mechanism is also provided. Then, the corner of the plate is polished with a sanding wheel. As a result, the periphery of the plate material is automatically polished, the work efficiency is higher than manual work by a grinder, and there is no need for the worker to approach the source of dust, so that the working environment is not deteriorated.

Since the corners of the peripheral edge of the plate are polished by the rotation of the sanding wheel provided with a large number of polishing pieces on the peripheral edge, even if the polishing mechanism does not move along the curve of the corner, the corners are linear. The movement can polish the corners in a curved manner. The straight portion between the corners of the plate is polished by linearly moving a belt polishing mechanism for moving the sanding belt. Therefore, each polishing unit only needs to be moved linearly, and a structure for moving the polishing mechanism is required as compared with a scanning router or a numerical control router that requires a complicated movement of the polishing mechanism including a curved movement. It becomes significantly easier.

[0010]

As described above, according to the chamfering device of the present invention, since the chamfering and polishing of the peripheral edge of the plate material can be automatically performed, the working efficiency is higher than the manual work by the grinder, and the work is performed at the source of dust generation. There is no deterioration of the working environment because there is no need for anyone to approach. Moreover, since each polishing processing unit may be moved linearly, the moving mechanism is simple and the manufacturing cost can be reduced.

[0011]

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

The chamfering device exemplified in this embodiment is for polishing a peripheral portion of a metal plate material such as a stainless steel plate (hereinafter referred to as "work"). Although not shown,
A punch press device is provided adjacent to this device, and two adjacent corners of the work are cut in a curved shape in advance by the punch press device, and are conveyed to the chamfering device by a work conveying device (not shown). As a result, burrs at each corner are removed, and upper and lower ridges between the corners are chamfered and polished.

<Structure> FIG. 1 shows a plan view of the chamfering apparatus according to the present embodiment. Basically, a work table 10 and a first table provided below the work table 10 in FIG. 1 and a second polishing unit 200 provided on the right side of the worktable 10 in FIG. 1. Hereinafter, the structure of each basic component will be described in detail.

[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 Countless small holes 12a throughout
These are selectively connected to a blower and a vacuum pump (not shown) via a solenoid valve. The blower allows the work to move freely on the work table 10 by blowing air from the small holes 12a, and the vacuum pump sucks air from the small holes 12a to move the work on the work table 10. It is for fixing above. In order to cope with the difference in the size of the work, by operating the manual valve, it is possible to activate only the small holes 12a formed in the entire area of the work table 10 in the desired area. it can.

For example, a total of 4
A platform pusher mechanism 20 is provided. They are,
The pusher plate 21 (see FIG. 4) is moved along the upper surface of the table plate 12 by the air cylinder 22.
Two of the tables have the pusher plate 21 attached to the worktable 10.
Are moved in the vertical direction (referred to as Y direction), and the remaining two units are provided for moving the pusher plate 21 in the lateral direction (referred to as X direction). These can be mounted at any positions on the work table 10 in order to cope with the difference in the 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 for positioning by receiving the work pushed by the pusher mechanism 20 described above. ing. The X-direction guide mechanism 30 includes two horizontal cylinders (not shown) provided on the table base 11 as shown in FIGS. The moving plate 32 is attached, a vertical cylinder 33 is attached to the moving plate 32 so that a rod 33a extends vertically, and a horizontal receiving plate 34 is fixed to the upper end of the rod 33a. When the rod 31 of the horizontal cylinder is advanced and the rod 33a of the vertical cylinder 33 is raised in this state, the receiving plate 34 is moved to the worktable 10 as shown in FIG.
The work moved on the table plate 12 comes into contact with the table plate 12. At this time, since the receiving plate 34 is located away from the work table 10, the work is
0 slightly protrudes from one side edge (the right side edge in FIG. 1). When the vertical cylinder 33 is moved down from this state and the horizontal cylinder is moved backward, the receiving plate 34 and the moving plate 32
Is retracted below.

The Y-direction guide mechanism 40 includes a horizontal cylinder and a vertical cylinder 43 and has the same configuration as the X-direction guide mechanism 30. When both cylinders are operated, the receiving plate as shown in FIG. The work 44 moved on the table plate 12 can be brought into contact therewith with the position 44 spaced from the side of the table plate 12 (the lower edge of FIG. 1). Thus, the work can be made to slightly protrude from one side edge of the work table 10. Of course, by operating both cylinders in the opposite direction, the receiving plate 44 and the moving plate 42 can be retracted below the table plate 12 similarly to the X-direction guide mechanism 30.

The pusher mechanism 20 described above,
The X-direction guide mechanism 30 and the Y-direction guide mechanism 40 cooperate with the small holes 12 a of the table plate 12 to move the work in a predetermined state in which the peripheral processing portion protrudes from two adjacent side edges of the work table 10. It functions as a work positioning and fixing means for positioning and fixing.

[A-2] First polishing unit 100
The polishing unit 100 is movable right and left in FIG. 1 along one edge (lower edge in FIG. 1) of the work table 10. First, the structure for the movement is shown in FIGS.
This will be described with reference to FIG.

In the moving area of the polishing unit 100, a long base frame 110 is provided, and two X-direction guide rails 111 are fixed on the upper surface thereof in parallel.
A moving frame 112 is provided above the base frame 110, and a slider 113 attached to the lower surface thereof is slidable on the X-direction guide rail 111, so that the moving frame 112 moves along the base frame 110 to the left and right in FIG. Can be moved. On the upper surface of the moving frame 112, two guide rails 114 are fixed in parallel in a direction orthogonal to the X-direction guide rails 111, and the unit frame 1 of the first polishing unit 100 is fixed here.
01 is movably supported via a slider 115. Accordingly, the first polishing unit 100 can move on the base frame 110 to the left and right in FIG. 1 and can also move up and down (in a direction approaching or moving away from the work table 10).

On the other hand, a feed screw shaft 116 is rotatably provided in the base frame 110 via a bearing 117 (shown in FIG. 8), and a motor 118 is fixed near one end inside as shown in FIG. Then, the feed screw shaft 116 is rotationally driven by the motor 118. As shown in FIG. 8, a female screw block 120 is screwed to the feed screw shaft 116 via a mounting member 119, and this is fixed to the bottom surface of the moving frame 112. Therefore, the motor 118
When the feed screw shaft 116 is rotated, the moving frame 112 and thus the first polishing unit 100 move in the X direction along the base frame 110. The other end of the feed screw shaft 116 has a rotary encoder 1
The rotation speed of the feed screw shaft 116 and the position of the first polishing unit 100 can be detected. Although not shown, the moving frame 112 is provided with the same configuration as the above-described feed screw shaft 116 and motor 118. By driving the motor, the moving frame 112 and thus the first polishing unit 100 are moved to the base frame. It can be moved along a direction (Y direction) orthogonal to 110.

The moving frame 112 is provided with a dust collecting device 122 together with the first polishing processing unit 100, and a belt polishing mechanism 130 and a wheel polishing mechanism 170 described later provided in the first polishing processing unit 100.
The dust collected from the work can be collected and removed from the air.

Now, the belt polishing mechanism 130 and the wheel polishing mechanism 170 will be described in detail.

(A-2-1) Belt Polishing Mechanism 130 The schematic appearance of the belt polishing mechanism 130 is shown in FIG. 9, and is basically configured so that the endless sanding belt 131 can be driven by a motor (not shown). is there.

More specifically, as shown in FIG.
An arc-shaped guide 132 about a rotation axis A substantially at the center of the front edge of the unit frame 1 is fixed by bolts 133, and a rotation frame 134 is provided on the side of the unit frame 101 so as to face the unit frame 101. Is provided. For example, three pairs of guide rollers 135 are rotatably provided on the rotating frame 134 at positions sandwiching the arc-shaped guide 132, and the rotating frame 134 is rotatable about the rotating axis A with respect to the unit frame 101. Has become.

In order to prevent the rotating frame 134 from being detached from the unit frame 101, the sliding piece 138 is connected to the boss 136 provided between the guide rollers 135 via the supporting member 137 so that the sliding piece 138 is formed in the arc-shaped guide 132. Is attached so as to be sandwiched from the back side (FIG. 10).
reference). A semicircular driven gear 139 is fixed to the boss 134a around the rotation axis A with a bolt 140 at the front edge of the rotating frame 134, and the driven gear 139 is fixed to the unit frame 101. A drive gear 140 that meshes is provided. The drive gear 140 is attached to a drive shaft 141 rotatably supported by the unit frame 101, and rotates a pulley 142 attached to an end of the coaxial 141 by a drive motor 143 (shown only by a broken line in FIG. 6). Can be. By driving the driving motor 143 in this manner, the rotating frame 13 is rotated.
A frame rotating mechanism 160 for rotating the rotating member 4 about the rotating axis A is configured, and the rotating angle range is about 90 degrees. The rotation axis A extends substantially horizontally so as to extend along the periphery of the work placed on the work table 10.

As shown in FIG. 12, a drive 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. The driving roller 145 is rotationally driven by a driving motor 148 provided on the rotating frame 134 via a timing belt 149, thereby causing the sanding belt 131 to run at high speed. The tension roller 147 is attached to a rod of the cylinder 147a, and applies a predetermined tension to the sanding belt 131 by operating the cylinder 147a. The idle roller 146 and the driving roller 1
A pressing pad 150 is provided on the back side of the sanding belt 131 between the pad cylinder 45 and the pad cylinder 152 so that the pressing pad 150 can be moved by the pad cylinder 152 while being guided by the linear guide 151 in the horizontal direction in FIG. Has become. That is, when the pad cylinder 152 is operated to protrude, the pressing pad 150 moves toward the work table 10 and presses the sanding belt 131 against the work W as shown in FIG. 12, whereby the work W is polished. In the pressing pad 150, a soft pad 150b is attached to a support block 150a, and the soft pad 150b is
0c. Further, a cover 153 is provided so as to cover the sanding belt 131 stretched between the rollers while leaving a front surface portion, and a dust collection hose 1 extends from a lower front portion of the cover 153 to an intake port of the dust collection device 122.
54 are connected.

(A-2-2) Wheel Polishing Mechanism 170 FIG. 13 shows a schematic appearance of the wheel polishing mechanism 170. Basically, a large number of polishing pieces 171 are provided on the periphery of the rotating base 171a.
The configuration is such that the sanding wheel 171 provided with b is rotatable by a motor (not shown).

The wheel polishing mechanism 170 also has a frame rotating mechanism 160 similar to the belt polishing mechanism 130,
The drive motor 16 provided on the upper part of the unit frame 101
By rotating the rotation of the rotation frame 2, the rotation frame 164 can be rotated by a desired angle about the rotation axis A.

A mounting board 173 of substantially the same shape 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
The mounting substrate 173 is provided with a moving frame 175 facing the mounting substrate 173, and a slider 176 fixed thereto is engaged with the guide rail 174 so that the moving frame 175 can move back and forth with respect to the mounting substrate 173. ing.
A drive shaft (not shown) is rotatably supported on the moving frame 175 through a bearing device 177 in a slightly inclined state. The sanding wheel 171 is attached to an upper end thereof, and a pulley 178 is attached to a lower end thereof. Is provided. On the other hand, as shown only in FIG. 15, a driving motor 179 is mounted on the back side of the mounting substrate 173, and a belt 180 is stretched between the pulley 178 and the sanding wheel 171. Has become. The sanding wheel 171
14 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 uniformly hits the end face of the work W. A cover 181 having an open front is provided around the sanding wheel 171, and the inside thereof is provided with a dust collecting hose 12.
It is connected to the dust collecting device 122 via 2a.

On the other hand, as shown in FIG. 15, a bearing 182 is mounted behind the moving frame 175, and a feed screw shaft 183 is rotatably supported by the bearing 182. A pulley 184 is attached to an end of the feed screw shaft 183, and is driven to rotate via a belt (not shown) stretched between the pulley 184 and a motor 185 (only shown in FIG. 13). This feed screw shaft 1
A female screw block 186 is screwed into the distal end of 83, and the female screw block 186 is movably supported by a guide rail 174 via a slider 187. Therefore, when the motor 185 is rotated, the female screw block 1 is rotated.
86 moves along the front-back direction (the direction approaching or moving 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, when the rod 188a of the air cylinder 188 is extended, the moving frame 175 and thus the sanding wheel 171 are moved forward (the work table 10).
(In the direction approaching). Note that a rotary encoder 189 is connected to an end of the feed screw shaft 183 so that the rotation 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
This polishing unit 200 differs from the first polishing unit 100 in that it does not include the wheel polishing mechanism 170, and the other point is that the first polishing unit 10
Same as 0. That is, as shown in FIG. 1, a base frame 210 is provided on the right side of the work table 10, and the moving frame 212 moves in the vertical direction (Y direction) of FIG. 1 on two Y-direction guide rails 211 fixed thereto. Supported as possible. A dust collector 222 is provided on the moving frame 212, and a second polishing unit 200 is supported via a guide rail 214 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 processing unit 200 via a frame rotating mechanism 260, and the frame rotating mechanism 260 moves along the peripheral edge of the workpiece. It is rotatable within an angle range of about 90 degrees around a substantially horizontal rotation axis extending in a direction orthogonal to the rotation axis A. In addition, the belt polishing mechanism 23
0 is not shown in detail, but the belt polishing mechanism 130 of the first polishing unit 100 shown in FIGS.
In this configuration, an endless sanding belt is run over a plurality of rollers so as to run.

<Operation> Next, the operation of the chamfering apparatus of this embodiment will be described.

[B-1] Input and Initial Setting of Work Related Data The origin of each part is set by the operator, and the vertical and horizontal dimensions and thickness dimensions of the work to be processed are input to the control device through an operation panel (not shown). Is done. In addition, the pusher mechanism 20 on the work table 10 is mounted at an appropriate position according to the size of the work, and the manual valve of the work table 10 enables the small holes 12a in the appropriate area of the table plate 12 to be activated. Is switched to.

[B-2] Positioning and Fixing of Work The work is suspended from the ceiling by a transfer device (not shown) and supplied onto the work table 10. At the beginning of the supply of the work, the air from the blower is
The work is ejected from the group, and the work can freely move on the table plate 12. Also, in this state,
The receiving plates 34, 44 of the X-direction guide mechanism 30 and the Y-direction guide mechanism 40 extend to the side positions of the table plate 12, as shown in FIGS. Then, when a signal indicating that the work has been transferred to the work table 10 is received from the transfer device, the control device operates the pusher mechanism 20 on the work table 10 to push the work in the X direction and the Y direction, thereby setting each guide mechanism. 30 and 40 are brought into contact with the receiving plates 34 and 44. After this, work table 10
The small holes 12a are connected to a vacuum pump, whereby the work is suction-fixed on the work table 10. Then, the air cylinders of the X-direction guide mechanism 30 and the Y-direction guide mechanism 40 operate, and the receiving plate 3
4 and 44 and moving plates 32 and 42
In a state of being retracted below. At this stage, the processing portions on the peripheral edge of the work (the two right and lower side edges in FIG. 1) are slightly protruding from the peripheral edge of the table plate 12.

[B-3] Work Polishing Before starting the polishing, the belt polishing mechanism 130 and the wheel polishing mechanism 170 in the first polishing unit 100 are provided.
Each frame rotation mechanism 160 positions the rotation frame 164 at an intermediate angle, and therefore, for example, as shown in FIG. 12, the sanding belt 131 and the sanding wheel 171 are in a state of being opposed from right beside 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, those which are polished while proceeding in the opposite direction are indicated by underlining the symbols representing the polished parts. A representative one of these polishing steps will be described.

[B-3-1] Polishing of Flat Surface RL0 at Left Corner When a polishing start signal is output, the first polishing processing unit 100 moves the work processing position from the origin position along the X-direction guide rail 111 from the origin position. Then, the right side of the sanding wheel 171 faces the left corner of the work. At this time, the driving motor 143 of the belt polishing mechanism 130 and the motor 185 of the wheel polishing mechanism 170 are operated to drive the sanding belt 131 and the sanding wheel 171, and the dust collecting device 122 is in the operating state.

In this state, the air cylinder 188 of the wheel polishing mechanism 170 protrudes for a predetermined time based on a signal from the control device. Then, while the air cylinder 188 is protruding, the rotating sanding wheel 171 advances to the work side, and the polishing piece 17 of the sanding wheel 171 is moved.
Since the group 1b rubs the left corner of the work at a high speed, the left corner of the work is polished. In this case, the polishing pieces 171b of the sanding wheel 171 collide with the corners of the workpiece while being spread in the radial direction by centrifugal force, so that a relatively wide area of the corners is polished by the polishing pieces 171b.

[B-3-2] Polishing of Front Edge Flat Surface X0 (Outward Path) Next, the first polishing processing unit 100 moves toward the right corner along the X-direction guide rail 111, and At the same time, the pad cylinder 152 of the belt polishing mechanism 130 protrudes. Then, the running sanding belt 13
1 is a flat surface X of the front edge of the work by the pressing pad 150.
Therefore, the flat surface X0 of the front edge portion of the work is sequentially polished toward the right corner. When the first polishing unit 100 reaches the right corner, the pad cylinder 1
52 is retracted and the pressing pad 150 is retracted,
The sanding belt 131 is separated from the side edge of the work, and the first polishing of the front edge flat surface X0 is completed.

If the front straight portion is polished by the sanding belt 131 in this manner, the sanding belt 131 is polished.
Since the polishing portion is flat, the belt polishing mechanism 130 and thus the first polishing processing 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 processing unit 100 is slightly moved so that the left side of the sanding wheel 171 faces the right corner of the work. become. Then, based on the signal from the control device, the air cylinder 1 of the wheel polishing mechanism 170 is again activated.
88 protrudes for a predetermined time, and the sanding wheel 1
The group of 71 polishing pieces 171b rubs 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], a relatively wide area of the right corner of the work is polished by the group of polishing pieces 171b.

[B-3-4] Re-polishing of Front Flat Surface X0 (Return) Next, the first polishing processing unit 100 moves in the opposite direction to the left corner along the X-direction guide rail 111. In addition, the pad cylinder 15 of the belt polishing mechanism 130
2 operates to protrude. As a result, the running sanding belt 131 is pressed against the flat front surface X0 of the work by the pressing pad 150, and the flat front surface X0 of the work is sequentially polished toward the left corner. And
When the first polishing unit 100 reaches the left corner and the second polishing of the front flat surface X0 of the work is completed, the pad cylinder 152 moves backward to separate the sanding belt 131 from the side edge of the work. .

[B-3-5] Polishing of Right Edge Flat Surface Y0 When the first polishing unit 100 starts returning toward the left corner, the second polishing unit 100 performs the second polishing at a predetermined timing before reaching the left corner. 1 starts moving downward along the Y-direction guide rail 211 in FIG. And when this arrives at the work area of the workpiece,
Similarly to the first polishing unit 100, the pad cylinder of the belt polishing mechanism is protruded and the sanding belt is pressed against the work, and the work is polished while moving on the right-hand flat surface Y0 of the work. When the second polishing processing unit 200 reaches the lower right corner of the workpiece, the pressing pad of the belt polishing mechanism retreats and the polishing is completed. At this point, the first polishing processing unit 100 is moved to the right side of the workpiece. It is sufficiently far from the corner, and there is no possibility that both units 100 and 200 will interfere with each other.

[B-3-6] Polishing of Lower Edge Line 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. And the rotating frame 16
4 is rotated downward by about 45 degrees, and the belt polishing mechanism 13 is rotated.
0 sanding belt 131 and wheel polishing mechanism 17
The zeroing wheel 171 corresponds to the lower ridge of the work. Then, from this state, the air cylinder 188 of the wheel polishing mechanism 170 protrudes for a predetermined time, and the lower edge RL1 of the left corner of the work is polished by the sanding wheel 171.

[B-3-7] Polishing of Upper Ridge RR2 of Right Corner When the polishing unit 100 is located at the right corner and polishing of the lower ridge RR1 of the right corner is completed, the frame rotating mechanism is used. 1
60, the rotating frame 164 is rotated about 90 degrees in the opposite direction, and the sanding belt 131 of the belt polishing mechanism 130 and the sanding wheel 171 of the wheel polishing mechanism 170 are moved to the upper ridge of the work. It will correspond. In this state, the air cylinder 188 of the wheel polishing mechanism 170 protrudes for a predetermined time, so that the upper ridge RR2 of the right corner of the work is polished by the sanding wheel 171. Further, the remaining two corners of the four corners of the work are turned over and supplied to the punch press again to cut the corners, and the cuts are supplied to the work table 10 side of the apparatus of the present embodiment. It is automatically polished in the same way as it did.

<< Effects of Embodiment >> As described above, according to this embodiment, the work W to be chamfered is placed on the work table 10 and fixed in position, and the first and second polishing units 100 and 200 are used.
Is moved along one and the other of the two side edges of the work table 10 while the peripheral edge is polished. In this embodiment, a belt polishing mechanism 130 and a wheel polishing mechanism 170 are provided in the first polishing processing unit 100, and a processing portion on one side edge of the work W is polished by the sanding belt 131, and the wheel is polished. Two corners of the work W are polished by the sanding wheel 171 of the polishing mechanism 170. Further, since the second polishing unit 200 is provided with the belt polishing mechanism 130, the work W is formed by the sanding belt 131 of the belt polishing mechanism 130.
Is processed at the other side edge. As a result, the peripheral portion of the work W is automatically polished, and the work efficiency is increased as compared with the manual operation using a grinder which has been conventionally performed. Further, the operator only needs to operate the control device or monitor the movement, and there is no need to approach the dust generation source, so that the working environment is not deteriorated. Especially,
A dust collector 122 is attached to each of the polishing mechanisms 130 and 170 to collect and remove dust generated during polishing, so that the working environment can be maintained extremely well.

Further, since the corner of the peripheral edge of the work W is polished by the rotation of the sanding wheel 171, the first polishing unit 100 does not move along the curve of the corner, but the sanding wheel 171 does not move. Can be polished in a curved surface by a linear motion of moving the sanding wheel 171 back and forth in such a state that each is opposed to 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 moves the sanding belt 131. Therefore, each of the first and second polishing units 10
0 and 200 need only be moved linearly, and the structure for moving the polishing mechanism is remarkably different from that of a scanning router or a numerical control router which requires complicated movement of the polishing mechanism including a curved movement. It is simple and the manufacturing cost can be reduced.

The present invention is not limited to the above embodiment. For example, a work reversing mechanism may be provided so that the four corners may be automatically polished. Various changes can be made.

[Brief description of the drawings]

FIG. 1 is an overall plan view

FIG. 2 is an overall side view.

FIG. 3 is an overall front view.

FIG. 4 is a side view showing each guide mechanism in the X and Y directions.

FIG. 5 is a front view showing guide mechanisms in X and Y directions.

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

FIG. 7 is a longitudinal side view showing a moving mechanism of the first polishing unit.

FIG. 8 is a longitudinal 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 longitudinal sectional view showing a rotation mechanism of the belt polishing mechanism.

FIG. 11 is a cross-sectional view of the frame rotating mechanism taken along the line AA of FIG. 10;

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

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

FIG. 14 is a longitudinal sectional view showing a moving mechanism of the wheel polishing mechanism.

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

FIG. 16 is a perspective view schematically showing a polishing portion of a work.

FIG. 17 is a process chart showing a processing procedure of each polishing portion.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 work table 100 first polishing unit 122 dust collector 130 belt polishing mechanism 131 sanding belt 170 wheel polishing mechanism 171 sanding wheel 200 second polishing unit 230 belt polishing mechanism

Claims (1)

(57) [Scope of request for utility model registration] 1. A work table on which a periphery of a plate material is chamfered, wherein a work table on which the plate material is placed, and a processing portion of the periphery of the plate material protrudes from two adjacent side edges of the work table. A work positioning and fixing means for positioning and fixing in a predetermined state; and first and second polishing units movably provided along one and the other of the two side edges of the work table, A polishing unit includes a belt polishing mechanism in which an endless sanding belt is runably laid between a plurality of rollers, and a wheel polishing mechanism in which a sanding wheel provided with a large number of polishing pieces on its periphery is rotatably provided. A polishing portion of the plate material is polished by a sanding belt of the belt polishing mechanism, and a sanding wheel of the wheel polishing mechanism is provided. The second polishing unit is provided with a belt polishing mechanism in which an endless sanding belt is run between a plurality of rollers so as to run. A chamfering device for a plate material, wherein the processing portion on the periphery of the plate material is polished.