A zero-finding device and a zero-finding method for a numerically controlled turret tool post

Abstract

The invention discloses a zero-position searching device for a numerical control turret head and a zero-position searching method of the zero-position searching device. The zero-position searching device comprises a servo motor, an SDPLC driver, a hydraulic station, a braking sensor and a loosening sensor. The hydraulic station is provided with an electromagnetic reversing valve connected with the SDPLC driver, the electromagnetic reversing valve is simultaneously connected to the turret head, a monitor, a position sensor, a position state storage connected to the position sensor and a processor connected to the position state storage are arranged in the SDPLC driver, a signal sending block is arranged on a spindle of the turret head which is provided with a zero-position sensor, the servo motor drives the spindle of the turret head to rotate, the spindle drives the signal sending block to move to trigger the zero-position sensor, and the zero-position sensor is connected to the position sensor. By the adoption of the zero-position searching device for the numerical control turret head, in the toothed disc braking state, the turret head with the increment type encoder servo motor can be directly used after being provided with the motor, assembly time is saved, and product cost is reduced.

Description

technical field [0001] The invention relates to a numerically controlled machine tool, in particular to a zero-finding device and method for a numerically controlled turret tool rest. Background technique [0002] In the prior art, when the CNC turret tool post with incremental encoder servo motor is used, after each power failure, the encoder does not record the position before the power failure. After each power failure, it needs to find a position. As a reference point (that is, the zero position), it is possible to determine the position of each station of the cutter head of the tool post, and to know how to turn to reach the corresponding station. If the zero position is not set accurately enough, it will cause the servo motor to drive the tool post. After the main shaft rotates for rough positioning and during the meshing process of the gear disc, the main shaft rotates under the influence of the gear disc, the power is transmitted in reverse, and the gear drives the s...

AI Technical Summary

Problems solved by technology

[0003] This operation looks simple, but it is actually very difficult to do, because when performing step 5, it is necessary to ensure that the zero sensor is in the just-triggered state, that is, to ensure that the zero sensor is in the just-effective state, so it is difficult to adjust It is very large, especially when the turning circle of the sending block is very small, it is difficult to adjust

Either it is too large or it is not in place. Workers often cannot adjust the zero position of a product for a long time

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