JPH04367323A - Positioning device - Google Patents

Abstract

PURPOSE:To position one piece of positioning device with high accuracy with a driving shaft by providing the turning shaft of apositioning base on the driving shaft, and providing a mechanism for adjusting finely the difference of the left and the right of positioning accuracy in a positioning direction. CONSTITUTION:A positioning base 5 is moved to a prescribed position through a driving shaft 11 by a driving motor 12. Subsequently, by a work carrying- indevice 14, a work 2 is moved until it abuts on a work abutting part 3. Thereafter, by left and light distance sensors 13, 13, a distance (d) is measured, and in the case there is the difference in the distances (d) of the left and the right, positioning is executed by moving a wire 9 by driving a fine adjustment motor 8, and turning a positioning base 4 arround a turning shaft 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device for a long material.

0002

[Prior Art] Conventionally, Japanese Patent Laid-Open No. 57-944
A technique disclosed in Publication No. 28 has been proposed. According to this technique, the back gauge is movable in the direction of the bending line of the elongated material and in the operating direction of the mold, and is provided with a plurality of back gauges in a direction orthogonal to these, and can be positioned in each direction. However, conventional bending devices for long materials using a positioning device with a single drive shaft have not been equipped with a mechanism for finely adjusting the left-right difference in positioning accuracy in the positioning direction.

0003

Therefore, in the conventional positioning device having only one drive shaft, there was a problem that the bending position accuracy in the longitudinal direction of a long material was poor. This invention was made to solve the above problem, and its purpose is to provide a positioning device that can determine the bending position in the longitudinal direction with high precision in a positioning device that has a single drive shaft. It's about doing.

0004

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a positioning device for a long material with a single drive shaft, which has a rotation axis of a positioning table on the drive shaft, and improves the accuracy of positioning. It is characterized by having a mechanism for finely adjusting the left-right difference in the positioning direction.

[0005]

[Operation] With the above configuration, in the present invention, when positioning a long material using a positioning device that moves the positioning table with a single drive shaft, the rotation for rotating the positioning table on the drive shaft is provided. It has a shaft, and if there is a difference in positioning accuracy between the left and right sides of a long material, it is equipped with a mechanism that automatically finely adjusts the difference, making it possible to perform highly accurate positioning with a simple configuration.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1(a) and 1(b) show an example of a positioning device according to this embodiment.
3 are installed near both ends of the positioning table 4.

To perform fine adjustment using this positioning device, first the positioning table 5 is moved to a predetermined position by the drive motor 12 via the drive shaft 11. Next, the workpiece 2 is moved by the workpiece carrying-in device 14 until it hits the workpiece contact portion 3 . After this, the distance d is measured by the left and right distance sensors 13, 13, and if there is a difference between the left and right distances d, the positioning table 5 is placed near one end of the positioning table 5 so that the difference is less than a predetermined value. The fine adjustment motor 8 is driven. As a result, the wire 9 wound around the drive pulley 7 is moved, the positioning table 4 is rotated around the rotation axis 6, and the positioning table 4 is positioned with high precision in the Y direction.

FIGS. 2(a) and 2(b) show another embodiment of the present invention. In this embodiment, a distance sensor 13 similar to that described above,
13 are installed near both ends of the positioning table 4, and a fine adjustment screw 16 rotated by a fine adjustment motor 8 is also provided.

To perform fine adjustment using this positioning device, first the positioning table 5 is moved to a predetermined position by the drive motor 12 via the drive shaft 11, and then the workpiece 2 is brought into contact with the workpiece at the workpiece loading position 14. Move it until it hits part 3. After this, the distance d is measured by the left and right distance sensors 13, 13, and the fine adjustment motor 8 placed near one end of the positioning table 5 is driven so that the difference between the left and right distances d becomes a predetermined value. . As a result, the fine adjustment screw 16 rotates via the universal joint 15, and the positioning base 4
rotates around the rotation axis 6, the positioning base 4
It is positioned with high precision in the direction.

In this embodiment, the distance sensor 13 is used to measure the distance d between the lower mold 1 and the positioning table 4, but instead of this distance sensor 13, a rotation angle sensor is installed on the rotation shaft 6. You may attach it and make fine adjustments so that the angle becomes a predetermined value.

[0011]

Effects of the Invention As explained above, the present invention provides a positioning device for a long material with a single drive shaft, which has a rotation axis of a positioning table on the drive shaft, and the left-right difference in positioning accuracy can be adjusted in the positioning direction. By providing a mechanism for fine adjustment, highly accurate positioning can be performed. In addition, when performing positioning, compared to a positioning device with two drive shafts, the drive shaft can be made smaller and simpler, fine adjustment is possible, and positioning can be performed at any inclination relative to the lower die. It is possible.

[Brief explanation of drawings]

FIG. 1(a) is a plan view of a positioning device according to the present invention, and FIG. 1(b) is a side view thereof.

FIG. 2(a) is a plan view of a positioning device according to another embodiment of the present invention, and FIG. 2(b) is a side view thereof.

[Explanation of symbols]

1...lower mold 2...Work 3...Work contact part 4, 5...Positioning stand 6...Rotation axis 7... Drive pulley 8...Fine adjustment motor 9...Wire 10...Tension pulley 11... Drive shaft 12... Drive motor 13... Distance sensor 14...Work loading device 15...Universal joint 16...Fine adjustment screw

Claims (1)

[Claims] Claim 1: A positioning device for a long material having a single drive shaft, which has a rotating shaft of a positioning base on the drive shaft, and is equipped with a mechanism for finely adjusting the left-right difference in positioning accuracy in the positioning direction. A positioning device featuring: