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Threading/tapping control apparatus

A technology of control device and control unit, which is applied in the direction of automatic control device, feeding device, program control, etc., and can solve problems such as reduced accuracy of buckle picking, increased synchronization error, and synchronization error of workpiece and tool.

Inactive Publication Date: 2005-08-03
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the processing speed changes due to changes in instructions or interference during pick-up, there will be a synchronization error between the workpiece and the tool, which will reduce the pick-up accuracy.
[0008] In addition, in the case of tapping, if the delay of the servo system in the acceleration and deceleration area increases, the synchronization error will increase, and it will be difficult to speed up machining.

Method used

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  • Threading/tapping control apparatus
  • Threading/tapping control apparatus
  • Threading/tapping control apparatus

Examples

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Embodiment Construction

[0024] The following description of the preferred embodiments with reference to the accompanying drawings will make these and other objectives and features of the present invention clearer.

[0025] Hereinafter, embodiments of the present invention will be described together with the drawings.

[0026] Fig. 1 is a block diagram of the first embodiment of the present invention. This embodiment is an example of picking and snapping the workpiece 16. In this example, the workpiece is rotated by the motor 5m, and the tool (cutter) is moved toward the center of rotation of the workpiece 16 according to the ball screw / nut mechanism 7s driven by the slave motor 5s. Axis direction movement.

[0027] The speed feedback from the position and speed detector 6m is subtracted from the speed command output by the upper control device such as the numerical control device to obtain the speed deviation. The position and speed detector 6m is installed on the main motor 5m and detects the main motor...

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Abstract

A workpiece is rotated by a master motor and a tool is linearly moved by a slave motor to cut a thread in the workpiece. Position feedback of the master motor is multiplied by a coefficient K and the result used as the position command of the slave motor. Provision is made of an angle synchronization learning control unit for storing one pattern cycle's worth of the correction data of the threading and adding the same to the position deviation. This control unit stores one pattern cycle's worth of the correction data corresponding to the position feedback of the master motor. The position is converted to the correction data corresponding to the time at that time based on the stored correction data to find the correction data and this is added to the position deviation.

Description

Technical field [0001] The invention relates to a picking / tapping control device for synchronously controlling a rotating shaft and a linear feed axis when picking / tapping a workpiece. Background technique [0002] In the case of picking the workpiece, while the workpiece is rotated, the tool enters the specified cutting depth, and at the same time the tool is relatively moved along the axis of the workpiece for picking. In this case, the tool must be moved in the axial direction relative to the workpiece in synchronization with the rotation of the workpiece. [0003] In addition, when tapping a workpiece with a tapping machine, it is necessary to synchronize the rotation of the tapping machine with the feed in the axial direction. [0004] In this pick, in order to obtain synchronization between the rotary axis and the linear feed axis, the rotation speed of the rotation axis (spindle) that rotates the workpiece is detected, and the movement of the tool's feed axis is obtained f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q15/00B23G1/16G05B19/18G05B19/19
CPCG05B2219/41177G05B2219/45216G05B2219/45214G05B19/186G05B19/19G05B2219/42129G05B2219/41207
Inventor 丰泽雪雄园田直人
Owner FANUC LTD
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