A semi-automatic and fully automatic correction method for the offset of the tool head of the swash plate servo tool magazine

Abstract

The invention discloses a semi-automatic and full-automatic correction method for cutter head offset of a swash plate servo tool magazine. First, a tool magazine servo driver outputs alarm informationafter detecting offset, a programmable logic controller PLC judges a safety area for determining whether the current Z-axis position state is reasonable, and after that the current Z-axis position iswithin the safety area is determined, a machine tool EMG-STOP emergency stop switch is loosened, and the programmable logic controller PLC notifies the tool magazine servo driver through a pre-agreedinstruction protocol to rotate to the position before offset according to the nearest angle direction to realize full-automatic correction. When the offset is too large, manual operation is needed. After the control bit of a computer numerical control CNC machine tool is changed, a feed shaft is moved using a hand wheel to carry out semi-automatic correction. According to the method, the automatic correction function of a servo tool magazine motor is controlled through the programmable logic controller PLC and the servo driver, and after powering on, the angle position offset of the tool magazine can be quickly and automatically corrected to make the tool magazine restore to the right position under the premise that the conditions are satisfied.

Description

technical field [0001] The invention relates to the technical field of automatic control of machine tools, in particular to a semi-automatic and full-automatic correction method for the offset of a swash plate type servo tool magazine. Background technique [0002] Most of the servo tool magazines currently used in drilling and tapping machine tools are swash plate servo tool magazines of brands such as Deda, Shengjie, and Beidou. Absolute encoder or absolute value encoder composed of "quantity encoder + external battery". [0003] The following only takes the absolute encoder as an example to describe: after the servo drive is powered off (or the power supply of the drive is disconnected due to emergency stop, etc.), the drive side stores the position information A of the servo motor at the moment before the servo is powered off; The position of the tool on the servo tool magazine of the attack center and the uneven distribution of the tool weight and other external forces...

AI Technical Summary

Problems solved by technology

[0012] The existing technology requires end users or engineers to manually restore the offset of the tool magazine. The operation method is cumbersome, and it is difficult to ensure the concentricity between the center of the cutter head and the spindle center when the user is not skilled and inexperienced. The degree is within the allowable range, resulting in damage to the claws or loss of the tool during use, increasing the cost of the user's machine tool or indirectly increasing the later maintenance cost of the machine tool manufacturer.

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