Laser-assisted micromachining system and temperature control method thereof

Abstract

The invention discloses a laser-assisted micromachining system. The system comprises a work slide table, a tool module used for cutting a to-be-machined workpiece, a laser module and a temperature control module. The laser module is arranged on the work slide table and used for heating the to-be-machined workpiece as the work slide table moves in a three-dimensional space. The temperature controlmodule comprises temperature inductors, a cooler, a controller and a coolant. The temperature inductors induct the real-time temperature values of the cooler, the cooler is arranged on the work slidetable and supports the tool module, the controller feeds a control signal back to control the working state of the cooler according to the temperature values inducted by the temperature inductors, andthe coolant is used for controlling the temperatures of the cooler to be distributed within a set range. Meanwhile, the invention further provides a temperature control method of the laser-assisted micromachining system. According to the laser-assisted micromachining system and the temperature control method thereof, heat accumulation is avoided, the machining precision is improved, and the product yield is increased.

Description

【Technical field】 [0001] The invention relates to the technical field of micromachining, in particular to a laser-assisted micromachining system and a temperature control method using the micromachining system. 【Background technique】 [0002] Difficult-to-machine materials such as alloy steel and fiber-reinforced metal composites have excellent properties and have been applied to the processing and manufacturing of micro-sized structures and workpieces. During the cutting process of difficult-to-machine materials, due to their high strength and high hardness, some feature accuracy and cutting speed are limited by the rigidity of the machine tool and the strength and rigidity of ordinary micro-tools, and the rapid wear of the tool will lead to the machining accuracy of small parts. reduce. Therefore, it is necessary to use effective methods to process tiny parts. [0003] Laser-assisted micro-machining is a composite processing method that focuses the laser beam on the surf...

AI Technical Summary

Problems solved by technology

[0005] Laser heating has significantly improved the cutting performance of the material surface and is convenient for cutting, but there are still the following defects: with the increase of laser power and cutting speed, the heat on the surface of the tool material is easy to gather and conduct to the tool holder of the cutting workpiece , if the heat is not released in time, it will easily lead to large fluctuations in the surface temperature of the tool and tool holder, such as figure 1 shown

[0007] In view of the fact that the temperature of the tool module for cutting workpieces is unstable and fluctuates greatly, based on the principle of thermal expansion and contraction, the size of the tool and tool holder changes with the change of temperature, which affects the size of the workpiece during processing and reduces the Workpiece machining accuracy and yield

Images