Lathe spindle safety protection device and use method thereof

Abstract

The invention provides a lathe spindle safety protection device comprising a safety circuit and a wrench fixing seat matched with a lathe chuck wrench. The safety circuit is connected with a lathe drive circuit. The wrench fixing seat is provided with a sensing mechanism. The sensing mechanism comprises multiple travel switches connected with the safety circuit. Contacts of the travel switches point to a wrench storage area at the wrench fixing seat. When the wrench is not fixed to the wrench storage area, the on-off states of all the travel switches are the switch idle states. When the wrench is contained in the wrench storage area, the contacts of the travel switches are all triggered by the wrench, so that the on-off states of the travel switches are changed. When the on-off states of all the travel switches are different from the switch idle state, the safety circuit allows the lathe drive circuit to work. When the on-off state of any one travel switch is the switch idle state, the safety circuit forbids the lathe drive circuit to work. The lathe spindle safety protection device can use the resetting state of the chuck wrench as the lathe starting authentication mechanism, so that the safety is improved.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a safety protection device for a main shaft of a lathe and a method for using the same. Background technique [0002] When a worker is operating a machine tool, he often forgets to remove the chuck wrench before starting the machine tool after clamping the finished part. This poses a great safety hazard. In the prior art, there are devices that use a photoelectric sensor to detect the position of the handle to protect the lathe. Due to the relatively poor workshop environment, dust and oil pollution, the use of photoelectric sensors for signal feedback is easy to affect, and there is a possibility of misjudgment. Due to the humanized control effect and poor versatility, it cannot be applied to various chuck wrenches of different lengths. SUMMARY OF THE INVENTION [0003] The invention provides a safety protection device for a main shaft of a lathe and a method for using the same, whic...

AI Technical Summary

Problems solved by technology

[0002] When workers operate the machine tool, they often forget to take off the chuck wrench to start the machine tool after clamping the workpiece. This poses a great safety hazard. In the prior art, there is a device that uses a photoelectric sensor to detect the position of the handle to protect the lathe. Due to the relatively poor environment of the workshop with a lot of dust and oil, the use of photoelectric sensors for signal feedback is easily affected, and there is a possibility of misjudgment. Humanized control effect, and poor versatility, cannot be applied to chuck wrenches of various lengths

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