Bi-pass human-trigger self-delay protection circuit used for milling machine

Abstract

The invention discloses a double-pass human body trigger protection self-delay circuit for milling machines. The human body trigger protection self-delay circuit is composed of a trigger chip U1, a delay chip U2, a triode VT1, a bidirectional thyristor VS1 and other electronic components. The invention provides a double-pass human body trigger protection self-delay circuit for milling machines, which can well replace the expensive micro-controller in the existing intelligent braking device and be installed on the milling machine. The signal of the cutter head can quickly cut off the power supply to the drive motor in the milling machine, thus protecting the safety of the production equipment and operators, and can also automatically switch the power supply when there is a problem with the power supply, further improving the stability of the circuit operation , It also greatly improves the use effect of the product and reduces the unexpected expenditure of the enterprise.

Description

technical field [0001] The invention relates to a human body trigger protection self-delay circuit, in particular to a two-way human body trigger protection self-delay circuit for milling machines. Background technique [0002] A milling machine is a machine tool with a wide range of uses. It can process planes (horizontal planes, vertical planes), grooves (key slots, T-shaped slots, dovetail slots, etc.), toothed parts (gears, spline shafts, sprockets), Spiral surface (thread, spiral groove) and various curved surfaces. In addition, the milling machine can also be used to process the surface and inner hole of the rotating body and cut off the work. When the milling machine is working, the workpiece is installed on the worktable or the accessories such as the indexing head. The main movement of the milling cutter is the rotation, supplemented by the feed movement of the worktable or the milling head, and the workpiece can obtain the required processing surface. Due to the ...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above problems, to provide a two-way human body trigger protection self-delay circuit for milling machines, which can well replace the expensive micro-controller in the existing intelligent braking device and set it on the milling machine. The product can quickly cut off the power supply to the driving motor in the milling machine when it receives the signal that the foreign object is close to the cutter head, thus protecting the safety of the production equipment and the operator, and can also automatically switch the power supply when there is a problem with the power supply. It improves the stability of the circuit operation, greatly improves the use effect of the product, and reduces the unexpected expenditure of the enterprise

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