JP2877630B2 - 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 plate material chamfering apparatus for automatically chamfering a peripheral edge of a plate material, and more particularly, to a belt polishing mechanism for polishing a side edge surface of a plate material and a ridge portion thereof during linear movement. The present invention relates to a plate material chamfering device provided with the above.

[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, in such a manual polishing operation, since the holding force of the grinder varies from operator to operator, the corners and edges of the plate material and the unevenness in the chamfering of the ridge line portion are reduced. As a result, there is a problem that lack of uniformity, considerable skill is required, and work efficiency is remarkably reduced. 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 grind the side edges of the plate material and to chamfer the upper and lower ridges, thereby improving the working efficiency and reducing the working environment of the worker. It is an object of the present invention to provide a plate chamfering device which can be favorably maintained and has a low manufacturing cost.

[0007]

A plate material chamfering apparatus according to the present invention is for chamfering a peripheral edge of a plate material, and the plate material is protruded from a side edge with respect to a work table in a predetermined state. In a chamfering device in which a polishing processing unit is movably arranged on the side edge portion side of the work table while being positioned and fixed, an endless sanding belt provided on the polishing processing unit and stretched between a plurality of rollers. A belt polishing mechanism capable of sliding contact with a side edge of the plate material while traveling in a direction intersecting the longitudinal direction thereof, and a polishing unit rotating the sanding belt about a sliding contact position of the sanding belt with the plate material; The frame which displaces the facing angle with respect to the edge of the plate material by moving, thereby enabling the side edge surface and the upper and lower edge lines to be polished. The frame rotating mechanism guides and supports the polishing processing unit along its rotation path by an arc-shaped guide and a guide roll rolling along the arc-shaped guide, and is rotated by a motor. It is characterized in that the polishing processing unit is configured to be rotationally driven by a driven gear that is driven and a driven gear that is engaged with the drive gear in an arc shape.

[0008]

With the above construction, the polishing unit moves along the side edge of the work table, and the side edge of the work is polished by the sanding belt of the belt polishing mechanism in accordance with the movement. At this time, since the sanding belt travels in a direction crossing the longitudinal direction of the side edge of the plate, the sanding belt is in sliding contact with the plate over the entire width region. Further, since the corresponding angle of the belt polishing mechanism is displaced by the frame rotating mechanism, the side edge surface of the plate material and the upper and lower ridges are automatically polished. At the time of this angular displacement, the rotational driving force of the motor is transmitted to the polishing unit via the engagement between the drive gear and the driven gear, and the polishing unit rotates the guide roll along the arcuate guide. Guided and supported. Further, since the polishing processing unit rotates about the sliding contact position of the sanding belt with the plate material, the position where the sanding belt can slide on the plate material is large from the plate material regardless of the rotation angle. There is no shift.

[0009]

As described above, according to the chamfering apparatus of the present invention, the side edge surface of the work and the upper and lower ridges thereof are uniformly and efficiently polished by the belt polishing mechanism moving along the side edge of the work. It has the effect of being able to do so.
Further, since the sanding belt is polished while traveling in a direction intersecting with the longitudinal direction of the side edge of the plate material, a region over the entire width of the sanding belt can be used for polishing uniformly without waste. Further, since the polishing processing unit rotates about the sliding contact position of the sanding belt with the plate material, the position where the sanding belt can slide on the plate material is large from the plate material regardless of the rotation angle. There is no deviation, so the amount of correcting the position of the sanding belt during rotation is small, and the correction direction is only required in one of the parallel direction and the orthogonal direction to the plate. In addition, the polishing unit is guided and supported by the guide roll rolling along the arcuate guide, so that the polishing unit is smoothly rotated without receiving a large frictional resistance or being caught. Further, since the driven gear having an arc shape is used as the rotating power transmission means from the motor to the polishing processing unit, the center of rotation is set to the sliding contact portion between the sanding belt and the plate member, and the rotating drive is performed. Interference between the mechanism and the plate material can be avoided.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

The chamfering device exemplified in this embodiment is a metal plate (hereinafter referred to as "work") W such as a stainless steel plate.
Is for polishing the peripheral portion. Although not shown, a punch press device is provided adjacent to this device, and two adjacent corners of the work W are previously subjected to arc cuts L and R by the punch press device as shown in FIG. The workpiece is transferred to the chamfering device by a work W transfer device (not shown), where burrs at each corner are removed, and upper and lower ridges between the corners are chamfered and polished.

<Structure> The planer structure of the chamfering apparatus of this embodiment is shown in FIG. 1. Basically, a work table 10 and a first table provided on the lower side of FIG. Polishing unit 100 and work table 1
0, a second polishing processing unit 200 provided on the right side in FIG.
And three basic components. 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 has 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 workpiece W 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 suck the air.
Is fixed on the work table 10.
In order to cope with the difference in the size of the work W, by operating a manual valve, only the small holes 12a formed in the entire area of the work table 10 that are present in a desired area are made effective. Can be.

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 attached to any position on the work table 10 in order to deal with the difference in the size of the work W.

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 W pushed by the above-mentioned pusher mechanism 20. Have been. 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 that state,
As shown in FIG. 5, the receiving plate 34 is
The work W moved on the table plate 12 abuts on the side of the No. 0 table plate 12. At this time, the receiving plate 34 is
Since the work W is located away from 0, the work W slightly protrudes from one side edge of the work table 10 (the right side edge in FIG. 1). Then, from this state, the vertical cylinder 3
When the horizontal cylinder is moved backward and the horizontal cylinder is moved backward, the receiving plate and the moving plate 32 are retracted below the table plate 12.

The Y-direction guide mechanism 40 includes a rod 41 of a horizontal cylinder, a moving plate 42, a vertical cylinder 43, and a receiving plate 44, and has a configuration similar to that of the X-direction guide mechanism 30. By operating the receiving plate 44 as shown in FIG.
2 (lower edge in FIG. 1), and the workpiece W moved on the table plate 12 can be brought into contact therewith. Thereby, the work W is transferred to the work table 10.
Can slightly protrude from one side edge of the light emitting element.
Of course, by operating both cylinders in the opposite direction, X
Similarly to the direction guide mechanism 30, the receiving plate 44 and the moving plate 42 may be retracted below the table plate 12.

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 W around the predetermined edge of the work table 10 so that the processing portion protrudes from two adjacent side edges of the work table 10. Work W to be positioned and fixed in the state
Functions as positioning and fixing means.

[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.

A horizontally long base frame 110 is provided in the movement area of the polishing unit 100, 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.
Thus, dust shaved from the work W 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 support 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 portion 134a around the rotation axis A with a bolt 139a at the front edge of the rotating frame 134. The driven gear 139 is attached to the unit frame 101. A drive gear 140 that meshes is provided. The drive gear 140 has a drive shaft 141 rotatably supported on the unit frame 101.
And the pulley 142 attached to the end of the coaxial 141 can be rotated by a drive motor 143 (shown only by a broken line in FIG. 6). 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 peripheral edge of the work W 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 belt polishing mechanism 130 provided in this manner, the extension operation of the pad cylinder 152, that is, the protrusion amount of the pressing pad 150 is set by the plate thickness of the work W. When the work W is thick, the protrusion amount is reduced. The pressing pad 150 is set to be large and elastically deforms following the side edge surfaces X0 and Y0, guides the siding belt 131, and polishes it softly.
When the thickness of the work W is small, the projecting amount is set small, and the side edge surfaces X1, Y0 are also polished flexibly. In addition, the above-mentioned pressing pad 150 attaches the soft pad 150b to the support block 150a,
This is a configuration in which this is covered with a soft cover 150c. Further, a cover 153 is provided so as to cover the sanding belt 131 stretched between the rollers, leaving a front portion thereof, and a dust collection hose 154 is connected from a lower front portion of the cover 153 to an intake port of the dust collection device 122. ing.

(A-2-2) Wheel Polishing Mechanism 170 FIG. 13 schematically shows the 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 construction is such that the sanding wheel 171 provided with b is rotatable by a motor 179 as shown in FIG.

This 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 vertical board 175a is attached to the moving frame 175, and a drive shaft (not shown) is rotatably supported on the vertical board 175a via a bearing device 177 in a slightly inclined state. A sanding wheel 171 is attached, and a pulley 178 is provided at a lower end. On the other hand, as shown only in FIG. 15, a drive motor 179 is attached to the back side of the vertical substrate 175a,
A belt 180 is stretched between the pulley 178 and
Thus, the sanding wheel 171 is driven to rotate. 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 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 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 vertical substrate 175a of the moving frame 175, and the rod 188a is connected to the female screw block 186. Therefore, when the rod 188a of the air cylinder 188 extends, the moving frame 175 and, consequently, the sanding wheel. 171 is illustrated 2
As shown by the dashed line, it moves forward (in the direction approaching the work table 10). 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 Data on Work W The origin of each part is set by the operator, and the vertical and horizontal dimensions and thickness of the work W to be processed are controlled by an operation panel (not shown). Is input to Further, the pusher mechanism 20 on the work table 10 is mounted at an appropriate position according to the size of the work W, and the manual valve of the work table 10 activates the small holes 12 a in the appropriate area of the table plate 12. Is switched as follows.

[B-2] Positioning and fixing of the work W The work W is suspended from the ceiling by a transfer device (not shown) and left and right on the work table 10 in which two corners adjacent to each other in the previous process are corner-cut with a predetermined radius. Are supplied as the first polishing processing unit 100 side. At the beginning of the supply of the work W, the air from the blower is blown out from the small holes 12a of the table plate 12, so that the work W can freely move on the table plate 12. In this state, the X-direction guide mechanism 30 and Y
Each receiving plate 34, 44 of the direction guide mechanism 40 is shown in FIG.
5 and has advanced to the side position of the table board 12. As shown in FIG. Then, when a signal indicating that the work W has been transferred onto the work table 10 is received from the transfer device, the control device activates the pusher mechanism 20 on the work table 10 and pushes the work W in the X direction and the Y direction so that The guide mechanisms 30 and 40 are brought into contact with the receiving plates 34 and 44. Thereafter, the group of small holes 12a of the work table 10 is connected to a vacuum pump, whereby the work W is fixed on the work table 10 by suction. Then X
The air cylinders of the direction guide mechanism 30 and the Y direction guide mechanism 40 are operated, and the receiving plates 34 and 44 and the moving plates 32 and 42 are retracted below the table plate 12. At this stage, the processing portion at the periphery of the work W (the right and lower two side edges X0, Y0 in FIG. 1)
Are slightly projected from the peripheral edge of the table 12.

[B-3] Polishing of Work W Before the start of the polishing, the belt polishing mechanism 130 and the wheel polishing mechanism 170 in the first polishing unit 100 are provided.
Each of the frame rotating mechanisms 160 has the rotating frame 164 positioned at an intermediate angle. Therefore, for example, the sanding belt 131 and the sanding wheel 171 are opposed to each other from the side of the workpiece W as shown in FIG.

In the following description, the corners, side edges and ridges of the work W are denoted by 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, for the polishing progressing while proceeding in the opposite direction,
The symbol representing the polished portion is shown with an underline. A representative one of these polishing steps will be described.

[B-3-1] Polishing of Flat Surface RL0 at Left Corner L When the polishing start signal is output, the first polishing processing unit 100 moves the workpiece W along the X-direction guide rail 111 from the origin position. After moving to the processing position, first, the right side of the sanding wheel 171 faces the left corner L of the workpiece W. At this time, the driving motor 143 of the belt polishing mechanism 130
And the motor 185 of the wheel polishing mechanism 170 is operated to drive the sanding belt 131 and the sanding wheel 17.
1 is driven, and the dust collecting device 122 is in an 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 toward the work W, and the polishing piece 1 of the sanding wheel 171 is rotated.
Since the group 71b rubs the left corner L of the work W at a high speed, the flat surface RL0 of the left corner L of the work W is polished. In this case, the polishing piece 17 of the sanding wheel 171 is used.
The group 1b collides with the corner of the work W while being spread in the radial direction due to the centrifugal force. Therefore, a relatively wide area of the corner is polished by the polishing piece 171b.

[B-3-2] Polishing of Front Edge Flat Surface X 0 (Outward Path) Next, the first polishing processing unit 100 moves toward the right corner R along the X-direction guide rail 111, At the same time, the pad cylinder 152 of the belt polishing mechanism 130 protrudes according to the thickness of the work W. Then, the traveling sanding belt 131 is pressed against the front edge flat surface X0 of the workpiece W by the pressing pad 150, and the pressing pad 150 elastically deforms along the front edge flat surface X0 to guide the belt 131. The front edge flat surface X0 of the work W is polished sequentially toward the right corner R. First
When the polishing unit 100 reaches the right corner R, the pad cylinder 152 retreats and the pressing pad 150 retreats, so that the sanding belt 131 is separated from the side edge of the work W and the front edge flat surface X0 is removed. The first polishing is completed.

When the front edge flat surface X0 is polished by the sanding belt 131 as described above, the polished portion of the sanding belt 131 is flat.
It is sufficient that the first polishing unit 100 is moved linearly along the X-direction guide rail 111.

[B-3-3] Polishing of Flat Surface RR0 at Right Corner R Next, the first polishing unit 100 is slightly moved, and the left side of the sanding wheel 171 is moved to the right corner R of the work W. Will be opposed. Then, again, based on a signal from the control device, the air cylinder 188 of the wheel polishing mechanism 170 protrudes for a predetermined time, and the group of polishing pieces 171b of the sanding wheel 171 rubs the left corner of the work W at a high speed. Flat surface RR0 at right corner R of work W
Is polished. Also in this case, similarly to the case of the left corner L described in [B-3-1], a relatively wide area of the right corner R of the work W is polished by the polishing pieces 171b.

[B-3-4] Repolishing of Front Flat Surface X0 (Return) Next, the first polishing processing unit 100 moves in the opposite direction along the X-direction guide rail 111 toward the left corner L. Move,
At the same time, the pad cylinder 1 of the belt polishing mechanism 130
The projection 52 operates. As a result, the traveling sanding belt 131 is pressed against the front edge flat surface X0 of the work W by the pressing pad 150 in the same manner as in the outward path.
The front edge flat surface X0 of the work W is sequentially polished toward the left corner L. Then, when the first polishing processing unit 100 reaches the left corner L and the second polishing of the front edge flat surface X0 of the work W is completed, the pad cylinder 152 retreats to move the sanding belt 131 to the work W. Move away from side edges.

[B-3-5] Polishing of the Right Edge Flat Surface Y 0 When the first polishing unit 100 starts returning toward the left corner L, at a predetermined timing before the first polishing unit 100 reaches the left corner L. The second polishing processing unit 200 starts moving along the Y-direction guide rail 211 toward the lower side in FIG. Then, when this arrives at the processing area of the work W, the pad cylinder of the belt polishing mechanism 230 is protruded and the sanding belt is pressed against the work W similarly to the first polishing processing unit 100,
Polishing is performed while moving the flat surface Y0 on the right edge of the work W. This polishing operation is performed by the second polishing unit 2
When 00 reaches the right corner R of the work W, the pressing pad 150 of the belt polishing mechanism 130 retreats. At this point, the first polishing processing unit 100 is sufficiently separated from the right corner of the workpiece W, and there is no possibility that both units 100 and 200 will interfere with each other.

[B-3-6] Polishing of Lower Edge Lines RL1 and RR1 of Left and Right Corners L and R and Lower Edge Line X1 of Front Edge When the polishing unit 100 returns to the left corner L, the frame rotating mechanism 160 The driving motors 143 and 162 are rotated, the rotating frames 134 and 164 are rotated, the rotating frames 134 and 164 are rotated downward by about 45 degrees, and the sanding belt 131 of the belt polishing mechanism 130 is shown in FIG.
The solid line position 8 and the sanding wheel 171 of the wheel polishing mechanism 170 correspond to the lower ridgeline RL1 and the front edge lower ridgeline X1 of the left corner L of the work W. Then, the air cylinder 188 of the wheel polishing mechanism 170 is moved from this state.
Is operated for a predetermined time, and the sanding wheel 171 is operated.
Thereby, the lower ridge line portion RL1 of the left corner L of the work W is polished. Next, when the first polishing processing unit 100 moves toward the right corner R along the X-direction guide rail 111, similarly to [B-3-2], the pad cylinder of the belt polishing mechanism 130 is accordingly moved. The projection 152 operates. In addition,
The protrusion amount in the case of this ridge portion is set to be extremely smaller than the protrusion amount with respect to the plate thickness. Then, the running sanding belt 131 is moved by the pressing pad 150 to the work W.
Of the work W, the front edge lower edge line X1 of the work W is sequentially polished toward the right corner R. When the first polishing unit 100 reaches the right corner R, the pad cylinder 152 retreats and the pressing pad 150 retreats, so that the sanding belt 131 is separated from the side edge of the work W and the front edge lower ridge portion X1 is polished. Subsequently, the air cylinder 188 of the wheel polishing mechanism 170 is again protruded for a predetermined time, and the lower edge RR1 of the right corner R of the work W is actuated by the sanding wheel 171.
Is polished.

[B-3-7] Polishing of Upper Ridges RR2 and RL2 of Right and Left Corners L and R and Upper Ridge X2 of Front Edge The polishing unit 100 is located at the right corner R and below the right corner R. When the polishing of the ridgeline portion RR1 is completed, the drive motors 143 and 162 of the frame rotating mechanism 160 are rotated, and the rotating frames 134 and 164 are rotated about 90 degrees in the opposite direction, and the sanding belt of the belt polishing mechanism 130 is rotated. 13
Reference numeral 1 denotes a position indicated by a two-dot chain line in FIG.
70 sanding wheel 171 is at right corner R of work W
Corresponding to the upper ridge line portion RR2. Then, since the air cylinder 188 of the wheel polishing mechanism 170 protrudes for a predetermined time from this state, the sanding wheel 17
1, the upper ridge line portion RR2 of the right corner of the work W is polished. Then, the first polishing processing unit 100
When it moves toward the left corner L along the direction guide rail 111, the pad cylinder 152 of the belt polishing mechanism 130 protrudes accordingly. Then, the running sanding belt 131 is pressed against the front edge upper ridge line X2 of the work W by the pressing pad 150, so that the front edge upper ridge line X2 of the work W is sequentially polished toward the left corner L. The first polishing unit 100 is located at the left corner L
, The pad cylinder 152 moves backward, and the pressing pad 150 retreats.
Is separated from the side edge of the work W, and the front edge upper ridge line portion X2 is polished. Subsequently, the air cylinder 188 of the wheel polishing mechanism 170 is again protruded for a predetermined time, and the upper ridge RL2 of the left corner L of the work W is polished by the sanding wheel 171.

[B-3-8] Polishing of Upper and Lower Edge Lines Y1, Y2 of Flat Surface Y0 on the Right Edge On the other hand, when the second polishing unit 200 returns to the origin, the drive motor of the frame rotating mechanism 260 rotates. And
Belt polishing mechanism 130 of first polishing unit 100
Similarly, the belt polishing mechanism 230 rotates downward by about 45 degrees, and the sanding belt of the belt polishing mechanism 230 corresponds to the lower ridge Y1 as shown by the solid line in FIG. Then, the pad cylinder 15 of the belt polishing mechanism 230
2 operates to protrude. Then, the running sanding belt 131 is pressed against the front edge lower ridge line Y1 of the work W by the pressing pad 150, so that the right edge lower ridge line Y1 of the work W is sequentially polished toward the right corner R. When the second polishing unit 200 reaches the right corner R, the pad cylinder 152 retreats and the pressing pad 150 retreats, so that the sanding belt 131 separates from the side edge of the work W and the right lower ridge. Y1 is polished. Then, when reaching the lower ridge line portion RR1 of the right corner R, the driving motor of the frame rotating mechanism is rotated, and the belt rotating mechanism 230 is rotated about 90 degrees in the opposite direction, and the first polishing unit 1 is rotated.
As in the case of 00, the sanding belt 131 of the belt polishing mechanism 230 is positioned as shown by the two-dot chain line in FIG.

<< Effects of the Embodiment >> As described above, according to the present embodiment, the work W to be chamfered is
The first and second polishing units 100 and 200 are moved along one and the other of the two side edges of the work table 10, and the peripheral edge is polished. In this embodiment, the first polishing unit 100 is provided with a belt polishing mechanism 130 and a wheel polishing mechanism 170, and the sanding belt 131 is used to polish the processing portion of one side edge X0 of the work W. Sanding wheel 171 of wheel polishing mechanism 170
The two corners L and R of the work W are polished. Also,
The second polishing unit 200 includes a belt polishing mechanism 23.
0, the processing portion of the other side edge Y0 of the work W is polished by the sanding belt 131 of the belt polishing mechanism 230. 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. In particular, since the dust collecting device 122 is attached to each of the polishing mechanisms 130 and 170 to collect and remove dust generated during polishing, the working environment can be maintained extremely well.

Further, of the peripheral edge of the work W, the side edge X
In polishing the ridges X1, X2, Y1, Y2 of 0, Y0 and the upper and lower ridges, the protrusion amount of the pressing pad 150 is set by the belt polishing mechanism 130, 230 depending on the thickness of the work. When the protrusion amount is set large, the pressing pad 150 is elastically deformed following the side edge surfaces X0 and Y0, guides the siding belt 131 and is polished flexibly, and when the work W has a small thickness, the protrusion amount is reduced. Similarly, the side edges X0, Y0 are polished flexibly, and the mounting angle is displaced by the frame rotating mechanisms 160, 260 so that the upper and lower ridges X1, X2, Y1, Y2 of the side edges are made uniform. , And can be polished efficiently.

The present invention is not limited to the above-described embodiment. For example, a reversing mechanism of the work W may be provided to automatically polish the four corners, and so on. Can be implemented with various modifications.

[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.

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

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.

FIG. 18 is an explanatory diagram of a rotating operation of the belt polishing mechanism.

[Explanation of symbols]

 Reference Signs List 10 work table 100 first polishing unit 130 belt polishing mechanism 131 sanding belt 160 frame rotating mechanism 200 second polishing unit 230 belt polishing mechanism

Continuation of the front page (56) References JP-A-61-30342 (JP, A) JP-A-3-184757 (JP, A) JP-A-1-222857 (JP, A) (58) Fields investigated (Int .Cl. ⁶ , DB name) B24B 9/00 601 B24B 21/00 B24B 51/00

Claims (1)

(57) [Claims] 1. A method for chamfering a peripheral edge of a plate material, wherein the plate material is positioned and fixed in a predetermined state protruding from a side edge portion with respect to a work table, and is fixed to a side edge portion side of the work table. Is a chamfering device in which a polishing processing unit is movably disposed. The endless sanding belt provided in the polishing processing unit and stretched between a plurality of rollers intersects a longitudinal direction with respect to a side edge of the plate material. A belt polishing mechanism that enables sliding contact while traveling in a direction in which the plate material slides, and a polishing unit that is rotated about the sliding contact position of the sanding belt with the plate material, thereby displacing the facing angle to the edge of the plate material. And a frame rotating mechanism capable of polishing the side edge surface and the upper and lower ridges thereof. A guide and a guide roll that rolls along the arcuate guide guide and support the polishing processing unit along its rotation path,
A chamfering apparatus for a plate material, wherein the polishing processing unit is rotatably driven by a driving gear rotated and driven by a motor and a driven gear engaged with the driving gear in an arc shape.