Threading/tapping control apparatus
First Claim
1. A threading/tapping control apparatus for synchronizing a master motor and a slave motor, one of which is connected to a tool and the other of which is connected to a workpiece, and making them repeatedly perform a threading/tapping operation, comprising:
- a correction data processing unit for finding correction data of position deviation of said slave motor at a predetermined position of one pattern of repeated operation of threading/tapping based on the position deviation of the slave motor at a reference position serving as a standard for synchronizing the slave motor;
a correction data memory for storing one pattern'"'"'s worth of the found correction data;
a position correction processing unit for preparing a position correction amount for the position deviation at said reference position from said stored correction data; and
a position control unit for using said position correction amount to correct the position deviation of said slave motor to control the position of the slave motor.
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Accused Products
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.
16 Citations
11 Claims
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1. A threading/tapping control apparatus for synchronizing a master motor and a slave motor, one of which is connected to a tool and the other of which is connected to a workpiece, and making them repeatedly perform a threading/tapping operation, comprising:
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a correction data processing unit for finding correction data of position deviation of said slave motor at a predetermined position of one pattern of repeated operation of threading/tapping based on the position deviation of the slave motor at a reference position serving as a standard for synchronizing the slave motor;
a correction data memory for storing one pattern'"'"'s worth of the found correction data;
a position correction processing unit for preparing a position correction amount for the position deviation at said reference position from said stored correction data; and
a position control unit for using said position correction amount to correct the position deviation of said slave motor to control the position of the slave motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification