JP2008000849A - Rotating fixture mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost of a rotating fixture mechanism set on a working assembling line of a car body panel, etc. <P>SOLUTION: A rotating operation pin 23 is mounted on a working device 22 mounted on an arm 21 of a working robot 20, for example, a welding device. A rotation control plate 9 is rotated by using the rotating operation pin 23 by inserting the rotating operation pin 23 into a through-hole provided on the rotation control plate 9. Consequently, a rotating member 5 rotates around a central shaft 4 as its center and moves a workpiece positioning fixture 8c provided on an outer periphery of the rotating member 5 to a workpiece working position. Thereafter, the working robot 20 carries out working of welding, etc. on a workpiece 7a by using the working device 22 by extending the arm 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rotating jig mechanism, and in particular, by attaching a workpiece positioning jig corresponding to a workpiece to a rotating member, positioning and fixing the workpiece with the workpiece positioning jig, and rotating the rotating member, a predetermined workpiece The present invention relates to a rotating jig mechanism that rotates to a processing position.

  Conventionally, a rotating jig mechanism has been used in a processing assembly line such as a body panel. In this rotating jig mechanism, a plurality of types of workpiece positioning jigs corresponding to a plurality of types of workpieces are provided on each of a plurality of jig mounting surfaces of a rotating member that rotates about a horizontal central axis. The workpiece is rotated in both forward and reverse directions by an actuator such as a servo motor or air cylinder, and the workpiece is rotated to a predetermined workpiece machining position.

According to such a rotating jig mechanism, it is possible to smoothly exchange different workpiece positioning jigs for each of a plurality of types of workpieces, so that the productivity of the machining assembly line can be improved.
JP-A-7-1189 JP 2000-288784 A JP 2001-334421 A

  However, since the conventional rotating jig mechanism uses an actuator as a power source for rotating the rotating member, there is a problem that the equipment cost becomes high.

  Therefore, the present invention attaches a positioning jig corresponding to a workpiece to a plurality of jig mounting surfaces provided on a rotating member that rotates about a central axis, and positions and fixes the workpiece with the positioning jig. In the rotary jig mechanism in which the rotary member is rotated to the predetermined workpiece processing position by the rotation of the rotary member, the rotary member is rotated by using a processing robot that processes the workpiece as a power source. It is what.

  According to the present invention, since the rotating member is rotated by using a processing robot installed in a processing assembly line such as a vehicle body panel as a power source, an actuator becomes unnecessary, and the cost of the rotating jig mechanism is reduced. Can be achieved.

  Hereinafter, the rotating jig mechanism according to the first embodiment of the present invention will be described by taking a case where the rotating member has a triangular prism shape as an example. FIG. 1 is a front view of the rotating jig mechanism. FIG. 2 is a partial side view of FIG. FIG. 2 mainly shows the rotating member and the rotation control plate, and the processing robot and the like are omitted.

  A central shaft 4 is rotatably attached to the upper ends of support columns 2 and 2 erected from the base 1 via bearings 3 and 3, and a rotating member 5 is fixed to the central shaft 4. The rotating member 5 has a triangular prism shape, and the three jig mounting surfaces 6a, 6b, and 6c corresponding to the three surfaces of the triangular prism correspond to the three types of workpieces 7a, 7b, and 7c, respectively. Three types of workpiece positioning jigs 8a, 8b, and 8c are attached.

  A disc-shaped rotation control plate 9 is attached to the outer periphery of the central shaft 4 in front of the rotating member 5. The rotating member 5 rotates integrally with the rotation control plate 9. The rotation control plate 9 has three through holes 10a, 10b, and 10c that are elongated in the center direction of the rotation control plate 9 so as to correspond to the three jig mounting surfaces 6a, 6b, and 6c.

  In addition, a disc-shaped clamp plate 11 having notches 11 a, 11 b, and 11 c formed on the outer periphery is attached to the central shaft 4 on the back surface side of the rotation control plate 9 as a clamping mechanism for the rotating member 5. The tip of a clamp pin 13 extending from the cylinder 12 is fitted to the clamp plate 11 so that the rotating member 5 is clamped. In the example of FIG. 2, when any of the workpiece positioning jigs 8 a, 8 b, and 8 c stops at the workpiece processing position on the upper surface, the clamp pin 13 extends from the cylinder 12 and the notches 11 a, 11 b, The rotating member 5 is clamped by fitting into any of 11c.

  On the other hand, a rotation operation pin 23 is attached to a processing device 22 attached to the arm 21 of the processing robot 20, for example, a welding device, and the rotation operation pin 23 is connected to a through hole 10 a provided in the rotation control plate 9. The rotation control plate 9 is rotated by being inserted into any one of 10b and 10c, and the rotation operation pin 23 is linearly moved, whereby the rotation member 5 can be rotated. The number of linear motions is appropriately determined according to the angle of rotation, and may be once or twice.

  The rotation control plate 9 may be rotated by making the three through holes 10a, 10b, and 10c of the rotation control plate 9 into a circular shape and circularly moving the rotation operation pin 23 inserted therein. Further, instead of the three through holes 10a, 10b, 10c of the rotation control plate 9, as shown in FIG. 3, U-shaped grooves 14a, 14b, 14c are provided on the outer periphery of the rotation control plate 9, and these The rotation control plate 9 may be rotated by fitting the rotation operation pin 23 into one of the grooves and moving the rotation operation pin 23 in a circular motion.

  Next, an operation example of the rotating jig mechanism will be described. If the workpiece positioning jig 8a is stationary at the workpiece machining position as shown in FIGS. 1 and 2, the machining robot 20 extends the arm 21 from the state shown in FIG. Processing such as welding is performed on the workpiece 7a attached to the jig 8a using the processing device 22. When the machining is completed, the machining robot 20 removes the workpiece 7a from the workpiece positioning jig 8a and transfers the workpiece 7a to the next station.

  Thereafter, as shown in FIG. 5A, the processing robot 20 inserts the rotation operation pin 23 into the through hole 10b of the rotation control plate 9 and linearly moves it in the direction of the arrow in the figure. The linear motion of the rotary operation pin 23 may be performed once in the horizontal direction, or may be performed in a total of two linear motions, one in the obliquely downward direction and then one in the obliquely upward direction. As a result, the rotation control plate 9 is rotated 120 degrees clockwise, the workpiece positioning jig 8c is stopped at the workpiece machining position on the upper surface, and the rotating member 5 is clamped as shown in FIG.

  Thereafter, the processing robot 20 extends the arm 21 again, and performs processing such as welding on the workpiece 7c using the processing device 22. When the machining is completed, the machining robot 20 removes the workpiece 7c from the workpiece positioning jig 8c and transfers the workpiece 7c to the next station.

  Thereafter, as shown in FIG. 6A, the processing robot 20 inserts the rotation operation pin 23 into the through hole 10b of the rotation control plate 9 and linearly moves it in the direction of the arrow in the figure. Here, the linear motion of the rotary operation pin 23 may be two linear motions in the direction of arrow A, or a combination of linear motion in the direction of arrow A and linear motion in the direction of arrow B.

  As a result, the rotation control plate 9 is rotated 240 degrees counterclockwise, the workpiece positioning jig 8b is stopped at the workpiece processing position on the upper surface, and the rotating member 5 is clamped, as shown in FIG. 6B. Thereafter, the processing robot 20 extends the arm 21 again and performs processing such as welding on the workpiece 7b using the processing device 22. When the machining is completed, the machining robot 20 removes the workpiece 7b from the workpiece positioning jig 8b and transfers the workpiece 7b to the next station.

  When each machining of the workpieces 7a, 7b, 7c is completed, the next workpieces 7a, 7b, 7c are attached to the workpiece positioning jigs 8a, 8b, 8c by the machining robot 20 or manually. Further, as shown in FIG. 2, the workpiece 7a is machined while the workpiece positioning jig 8a is stationary at the workpiece machining position, and after the machining is completed, the workpiece 7a is removed from the workpiece positioning jig 8a, and the next workpiece is The workpiece positioning jig 8a may be attached to perform the machining step.

  In this way, the processing robot 20 can be used to continuously process different types of workpieces while rotating the rotating member 5 and exchanging the workpiece positioning jigs 8a, 8b, and 8c. Then, since the rotating member 5 is rotated using the processing robot as a power source, an actuator is not necessary, and the cost of the rotating jig mechanism can be reduced.

  In the above-described embodiment, three types of workpiece positioning jigs 8a, 8b, and 8c are used, but one type of workpiece positioning jig may be used. In this case, the following operation is performed. First, as shown in FIG. 7A, a work positioning jig 8a is attached to the rotating member 5, and the rotating member 5 is stopped at a position where the work positioning jig 8a is tilted 60 degrees to the left. The work 7a is attached to

  Then, as shown in FIG. 7B, the rotating member 5 is rotated clockwise using the processing robot 20, and the rotating member 5 is stopped at a position where the workpiece positioning jig 8a is inclined 60 degrees to the right. This position is a workpiece machining position, and the workpiece 7a is machined by the machining robot 20. After the machining is completed, the machining robot 20 removes the workpiece 7a from the workpiece positioning jig 8a. Then, as shown in FIG. 7C, the rotating member 5 is rotated counterclockwise by the processing robot 20 and returned to the original position in FIG. 7A. Then, the next workpiece 7a is attached to the workpiece positioning jig 8a again. Repeat the above steps.

  Next, a rotating jig mechanism according to a second embodiment of the present invention will be described. In the rotating jig mechanism according to the first embodiment, the rotating member 5 is rotated about the horizontal central axis. However, this embodiment rotates the rotary table about the vertical central axis. It is.

  As shown in FIG. 8, a workpiece positioning jig 32 is attached on the outer peripheral portion of a rotary table 31 that rotates about a vertical central axis 30. The workpiece 33 is attached to the workpiece positioning jig 32, the rotating table 31 is rotated by the machining robot 20, and the workpiece 33 is rotationally moved to the workpiece machining position.

  Then, at the workpiece machining position, the workpiece 33 is machined using the machining device 22 attached to the arm 21 of the machining robot 20. The mechanism by which the processing robot 20 rotates the turntable 31 can be configured, for example, by attaching the rotation control plate 9 of the first embodiment to the central axis.

It is a front view of the rotation jig mechanism by the 1st Embodiment of this invention. It is a 1st partial side view of a rotation jig mechanism by a 1st embodiment of the present invention. It is a 2nd partial side view of the rotation jig mechanism by the 1st Embodiment of this invention. It is a front view of the rotation jig mechanism by the 1st Embodiment of this invention. It is a 1st partial side view explaining operation | movement of the rotation jig mechanism by the 1st Embodiment of this invention. It is a 2nd partial side view explaining operation | movement of the rotation jig mechanism by the 1st Embodiment of this invention. It is a 3rd partial side view explaining operation | movement of the rotation jig mechanism by the 1st Embodiment of this invention. It is a top view of the rotation jig mechanism by the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Support | pillar 3 Bearing 4 Center axis 5 Rotating member 6a, 6b, 6c Jig attachment surface 7a, 7b, 7c Work piece 8a, 8b, 8c Work positioning jig 9 Rotation control board 10a, 10b, 10c Through-hole 11 Clamp Plate 11a, 11b, 11c Notch 12 Cylinder 13 Clamp pin 14a, 14b, 14c Groove
DESCRIPTION OF SYMBOLS 20 Processing robot 21 Arm 22 Processing apparatus 23 Rotation operation pin 30 Center axis 31 Rotary table 32 Work positioning jig 33 Workpiece

Claims (4)

A positioning jig corresponding to the workpiece is attached to a plurality of jig mounting surfaces provided on the rotating member that rotates around the central axis, and the workpiece is positioned and fixed by this positioning jig. In the rotating jig mechanism that is configured to rotate and move to a predetermined workpiece processing position,
A rotating jig mechanism characterized in that a rotating member is rotated using a processing robot for processing a workpiece as a power source. The rotation control plate that rotates integrally with the rotation member about the central axis of the rotation member is provided, and the processing robot rotates the rotation member by rotating the rotation control plate. The rotating jig mechanism described. Rotation control is performed by attaching a rotation operation pin to a machining device attached to the arm of the machining robot, inserting the rotation operation pin into a hole provided in the rotation control plate, and moving the rotation operation pin linearly or circularly. 3. The rotating jig mechanism according to claim 2, wherein the plate is rotated. 4. The rotating jig mechanism according to claim 2, further comprising a clamping mechanism for clamping the rotating member.

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