Safety protection device and safety protection method for numerically controlled lathe

Abstract

The invention discloses a safety protection device for a numerically controlled lathe. The safety protection device comprises a heartbeat and blood pressure detecting device, a wireless signal receiver, an infrared photoelectric sensor, an alarm and a spindle brake system, wherein the heartbeat and blood pressure detecting device comprises a pressure sensor, a heartbeat sensor, a signal conditioning and acquiring unit, a core control unit and a wireless signal transmitter; the signal conditioning and acquiring unit consists of a programmable amplifying circuit, an anti-aliasing filtering circuit, an A/D (analog/digital) conversion chip and a first-input and first-output register; and the core control unit consists of a digital signal processor and a programmable logic chip. Emergency behaviors such as strong beating of the heart, elevation of the blood pressure, muscular tension and perspiration of a human body when the human body gets hurt is used as a judgment basis, and the safety protection device acquires signals and analyzes the signals by using a wireless communication technology, judges whether the human body is in danger or not, transmits signals to a special receiver for a numerically controlled system if the human body is in danger, and timely triggers emergency actions, namely, rotation of a spindle and movement of a feeding shaft are quickly stopped; and safety treatment is automatically and quickly performed when the human body is in danger, and harm is reduced.

Description

technical field [0001] The invention relates to a safety protection aspect for a numerical control machine tool, and specifically belongs to the field of safety protection of a numerical control machine tool. Background technique [0002] At present, more and more attention is paid to personnel safety, especially for those industries that are extremely likely to cause great damage to personal safety. Based on this, my country has put forward clear index rules for the safety protection of CNC lathes, such as safe operation procedures and equipment safety. protection etc. However, due to the normal operation of this type of machine tool, the main shaft is rotating at a high speed, and for some reasons, the operator may cause human hair, gloves, clothes, etc. to be involved in the high-speed rotating main shaft and cause extremely dangerous consequences. Every year, due to lathe operation errors, there are continuous injuries and fatal accidents, which account for a large propo...

AI Technical Summary

Problems solved by technology

However, because the main shaft is rotating at high speed when this type of machine tool is running normally, and the operator, for some reason, may have human hair, gloves, clothes, etc. involved in the high-speed rotating main shaft and cause extremely dangerous consequences.

Every year, due to lathe operation errors, there are continuous injuries and fatal accidents, which account for a large proportion of machine tool damage. The conventional protection method is only to make the operator pay attention to relevant safety regulations and matters. Due to the excessive rotation speed of the machine tool spindle High, relying on manual emergency stop and other processing basically cannot really achieve the purpose of ensuring the safety of personnel

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