JPH071315A - Deburring device - Google Patents

Abstract

PURPOSE:To precisely and effectively remove burr alone, to prevent reduction in the quality of a work to be polished regardless of the contraction/extension of the work by turning an endless belt having an abrasive on the surface with a predetermined level of tensile force, and thereby making the abrasive pressure contact with the surface of the work to be polished. CONSTITUTION:The protrusion 12a of a second frame 12 is inserted into the groove 11a of a first frame 11 so that they can move in parallel to one another, to form a frame main body 10. The cylinder 13a and the piston 13b of a damper 13 are fixed to the first and the second frames 11, 12, respectively. The first and the second frames 11, 12 are contracted, and an endless belt 20 having an abrasive is suspended over the surface between a driving pulley 15 and an idle pulley 17. The frame main body 10 is fixed to a robot arm 30, and a wooden product 40 is provided on a predetermined point. The robot arm 30 is activated by a motor 14, while the endless belt 20 is brought into pressure contact with the upper side of the wooden product 40, to deburr the upper side by the abrasive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring device,
In particular, the present invention relates to a deburring device suitable for use in deburring a cutting edge of wood or a product formed by mainly using wood.

[0002]

2. Description of the Related Art As a conventional deburring device, one shown in FIG. 4 is known. In the figure, a lutor 2 is fixed to the tip of a drive arm 1 in a multi-axis robot. The multi-axis robot has a wooden product plate (ground object).
The plane position of the upper piece in 3 is taught, and the multi-axis robot drives the drive arm 1 so that the cutter 4 provided at the tip of the router 2 moves in parallel along the plane position.

When a cut is formed to make a wood product into a desired shape and an attempt is made to cut the wood product along the cut, a burr remains in a deep portion where the cut is not formed. The plate piece 3 is fixed at a predetermined position so that the side on which the burr remains is in the plane position, and the drive arm 1 in the multi-axis robot is moved while rotating the cutter 4 of the router 2.

[0004]

In the above-mentioned conventional deburring apparatus, since the plane position for moving the cutter 4 is fixed, the edges to be cut are the same when the wooden product expands and contracts depending on the humidity and temperature. Since there is a deviation from the plane position, there is a problem that the burr is left after the burr is left uncut, or the excessively cut bruise is left behind, which deteriorates the quality of the product.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a deburring device capable of satisfactorily removing only burrs regardless of the expansion and contraction of the object to be polished.

[0006]

In order to achieve the above object, the invention according to claim 1 is an endless belt having an abrasive on the surface thereof, and the endless belt is stretched by a predetermined tension to rotate. A configuration is provided that includes a pulley mechanism and a support mechanism that brings the endless belt into contact with the polishing surface of the object to be polished via the pulley mechanism.

[0007]

In the invention according to claim 1 configured as described above, the endless belt stretched and rotated by the pulley mechanism is brought into contact with the polishing surface of the object to be polished by the support mechanism. If burr remains, the endless belt rubs the burr part and scrapes it off with the abrasive material provided on the surface. When the burr is scraped off, the endless belt comes into contact with the entire surface of the object to be polished, so that the pressure per unit area is reduced and it is not polished.

[0008]

As described above, according to the present invention, the pressure at the time when the endless belt provided with the abrasive comes into contact with the burr part and the other part does not change, so that only the burr part is ground. It is possible to provide a deburring device capable of efficiently removing only burrs and stabilizing the quality by not performing polishing on the other portions.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a deburring device according to an embodiment of the present invention. In the figure, a frame 10 is formed in a U shape in which an L-shaped first frame 11 and a second frame 12 are slidably connected to each other at one side thereof and opened downward. A groove 11a that opens to the side surface along the axial direction of the side is formed in the connection portion of the first frame 11 with the second frame 12 from the end of the side to the middle, and the groove 11a is deep in the thickness direction. It is formed so as to widen toward. On the other hand, on the side surface of the connecting portion of the second frame 12 with the first frame 11, a protrusion 12a having a cross-section that matches the groove 11a is formed so as to protrude along the axial direction of the side.

Further, the groove 11a in the first frame 11
The cylinder 13a of the damper 13 whose slide direction is oriented in the side direction is fixed to the end part where the damper 1 is formed.
The tip of the piston 13b of the second frame 1
The second end 12b is connected and fixed. The damper 13 urges the piston 13b to be pushed out from the cylinder 13a. A motor 14 having a rotating shaft 14a oriented in the thickness direction is fixed to the lower surface of the lower end of the vertical side of the first frame 11 that is not the connecting portion. The drive pulley 15 is fixed to the projecting end portion. A semicircular groove 15a is formed on the outer circumference of the drive pulley 15. On the other hand, at the lower end of the vertical side of the second frame 12 which is not the connecting portion, the free rotation shaft 16 is provided in the thickness direction.
Is rotatably disposed, and a free-moving pulley 17 having a semicircular groove 17a formed on the outer periphery is fixed to the protruding end of the free rotating shaft 16. In this embodiment, a mechanism for stretching the endless belt 20 around the pulleys 15 and 17 held at the lower end of the frame 10 constitutes a pulley mechanism.

As shown in FIG. 2, the endless endless belt 20 is made of rubber mixed with cutting powder and has an endless shape with a circular cross section, and enters the grooves 15a and 17a in the drive pulley 15 and the free-moving pulley 17. In this way, it is stretched between the pulleys 15 and 17. The first frame 11 is fixed to the tip of the multi-axis robot arm 30,
The robot arm 30 moves the first frame 11 as taught in advance. In this embodiment, the endless belt 20 is brought into contact with the upper side 41 of the wooden product 40, which is the object to be ground, while the frame 10 is moved horizontally. In the present embodiment, the robot arm 30 and the frame 10 form a support mechanism.

Next, the operation of this embodiment having the above structure will be described. When the protrusion 12a protruding on the side surface of the second frame 12 is inserted along the axial direction into the groove 11a that is open to the end of the first frame 11, both frames 11 and 12 are separated from each other by the groove 11a and the protrusion 12a. It is possible to move in parallel along the connecting portion. In this state, damper 1
When the cylinder 13a of No. 3 is fixed to the first frame 11 and the piston 13b is fixed to the end of the second frame 12, the damper 13 becomes the first frame 11 and the second frame 1.
2 and 2 are separated from each other to act to reduce the distance between the connecting portions.

Next, the two frames 11 and 12 are contracted, and the endless belt 20 is stretched between the free-moving pulley 17 and the drive pulley 15. When the force for contracting both the frames 11 and 12 is released, the damper 13 tries to push the second frame 12 out of the first frame 11, so the endless belt 2
A predetermined tension is applied to 0. The frame 10 is fixed to the end of the robot arm 30, and the wooden product 40 is set at a predetermined position. When the motor 14 is driven to operate the robot arm 30, the endless belt 20 is pressed against the upper side 41 of the wooden product 40 while rotating between the pulleys 15 and 17. The upper side 41 is cut by forming notches up to more than half in the thickness direction, but burrs generated when the upper side 41 is split along the notches remain in the remaining portion.

The endless belt 20 is pressed downward from above the burr. Endless belt 20
Is pressed against the upper side 41, the second frame 12 approaches the first frame 11 side against the damper 13 and prevents the tension of the endless belt 20 from becoming excessively large. On the other hand, the endless belt 20
Since it contacts the upper end of the burr, the pressure per unit area is large at the beginning. Therefore, when the endless belt 20 rubs against the burr, the cutting powder tries to scrape off the burr. But,
When burrs are gradually scraped off and the upper side 41 becomes flat, the endless belt 20 contacts the entire surface of the upper side 41, and the pressure per unit area becomes small.

Although the same pressure changes according to the urging force of the damper 13, the endless belt 20 removes only burrs by preventing cutting powder from being scraped off when it comes into contact with the entire surface of the upper side 41. Will be able to. When the robot arm 30 moves the frame 10 so that the endless belt 20 moves along the upper side 41 of the wooden product 40, all burrs on the upper side 41 are removed. Thus, the L-shaped first frame 11 and the second frame 1 that hold the drive pulley 15 and the free-moving pulley 17, respectively.
A predetermined tension is applied to the endless belt 20 having an abrasive on its surface by urging the damper 13 to separate them from each other. In this state, when the motor 14 rotates the endless belt 20 via the drive pulley 15 and the robot arm 30 moves the frame 10 fixed to the end, the endless belt 20 is moved.
Moves along the upper side 41 of the wood product 40 as the object to be polished, abuts against the burr with a large pressure per unit and scrapes off, and after removing the burr, contacts the entire surface of the object to be polished. The pressure becomes small and it does not polish.

In the embodiment described above, the endless belt 20 is formed in a circular cross section containing cutting powder, but as shown in FIG. 3, a sandpaper 22 is attached to the endless belt 21 having a rectangular cross section. It can also be configured. The tension is adjusted by supporting the two pulleys 15 and 17 by the movable first frame 11 and the second frame 12, respectively. The tension may be adjusted by movably supporting the pulley.

[Brief description of drawings]

FIG. 1 is a perspective view of a deburring device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an endless belt of the deburring device.

FIG. 3 is a perspective view of an endless belt according to another embodiment.

FIG. 4 is a perspective view of a conventional deburring device.

[Explanation of symbols]

 10 ... Frame 11 ... First Frame 12 ... Second Frame 13 ... Damper 14 ... Motor 15 ... Driving Pulley 17 ... Free-moving Pulley 20 ... Endless Belt 30 ... Robot Arm

Claims (1)

[Claims] 1. An endless belt having an abrasive material on its surface, a pulley mechanism for stretching the endless belt by a predetermined tension to rotate the same, and polishing the endless belt for polishing an object through the pulley mechanism. A deburring device, comprising: a supporting mechanism that abuts against a surface.