Technology for controlling laser cutting power and speed when detonating cord is peeled off by laser

Abstract

The invention discloses a technology for controlling laser cutting power and speed when a detonating cord is peeled off by laser, and belongs to the field of processing of cord type initiating explosive devices. The technology comprises the following steps of (1) establishing a detonating cord cutting model; (2) according to the cutting model, determining parameters to be confirmed in a laser cutting model by performing a large number of cutting experiments; and (3) under the situation that the moving speed of a laser cutting platform is maintained unchanged, adjusting the power in an on-line manner so as to achieve the best cutting effect. According to the technology disclosed by the invention, the cutting effect of peeling off the detonating cord by the laser can be obviously improved; the detonating cord cutting model is established, the relationship between laser cutting power and the laser cutting speed is coordinated, so that removal of a surround of the detonating cord can be quickly and accurately realized, the flanging of a cutting surface is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a processing technology of cord pyrotechnics, in particular to a power and speed control technology of laser cutting when laser strips detonating cord. Background technique [0002] The stripping of the detonating cord refers to the process of removing the braided layer and plastic covering layer at the end of the detonating cord, and exposing a certain length of metal layer. The purpose of removing the end of the detonating cord is to make the lead pipe and silver pipe containing the medicament leak outside, and leave an interface for the subsequent assembly sleeve. However, the current method of using laser to remove the braided layer and plastic coating layer at the end has the following problems: [0003] During the laser cutting process, the heat generated by the laser will melt the plastic coating, and then a part of the melted coating will adhere to the laser cut on the surface of the detonating cord, resulting in flang...

AI Technical Summary

Problems solved by technology

If the laser energy is too much, it will cause a large flanging at the incision on the surface of the detonating cord, and the braid will burn the blackened silver tube, which will affect the progress of the subsequent process; if the laser energy is too small, the predetermined detonation will not be achieved. The cable cutting depth cannot complete the production task

There is no similar control technology

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