Apparatus and method for testing the effect of sub-dry cooling conditions on material surface quality

Abstract

The invention discloses a device and method for testing the influence of sub-dry cooling conditions on the surface quality of materials, including a test piece, a resistance furnace for fixing the test piece and simulating cutting heat, a gas cooling device and a liquid medium cooling device, and a gas The cooling device sequentially includes an air compressor, an air filter, a temperature regulator, a gas flow meter, a barometer, a thermometer and an air drying pipe, and the end of the air drying pipe is connected to the first nozzle; the liquid medium cooling device sequentially includes a liquid medium, a liquid flow rate meter and the liquid medium pipeline, and the end of the liquid medium pipeline is branched and connected to the first nozzle and the second nozzle respectively. The invention does not need to carry out actual processing on the workpiece, and the cutting heat is simulated by a resistance furnace, and the experimental operation is simple and easy to operate; the best cooling conditions and parameters of the material can be tested before the initial processing, and then these conditions and parameters are fixed Afterwards, the actual processing is carried out to reduce the production cost and improve the economic benefits of the enterprise.

Description

technical field [0001] The invention relates to an experimental device and a method thereof in the technical field of mechanical manufacturing metal cutting technology, in particular to a device and a method for testing the influence of sub-dry cooling conditions on the surface quality of materials. Background technique [0002] When cutting metal materials, a large amount of cutting heat will be generated, which will increase the cutting temperature in the cutting area, increase the cutting force, intensify the tool wear, make the whole cutting process difficult, and finally affect the surface quality, dimensional accuracy and Productivity of parts processing, etc. Therefore, in the cutting process, it is often necessary to increase the coolant to cool the cutting and improve the cutting environment to improve the surface quality of the parts. [0003] The current cutting cooling process is mainly to use cutting fluid to cool cutting. A cooling pump, a cooling liquid box, ...

AI Technical Summary

Problems solved by technology

The disadvantages of this process method are: 1. Due to the different degrees of difficulty in processing the materials to be cut, in order to meet the cooling needs during cutting, the operator only adjusts the valve switch based on experience to control the flow of the coolant, thereby controlling the flow of the cutting fluid. 2. Repeated entrainment of chip powder in cutting fluid is not conducive to precision machining; 3. It causes certain pollution to the environment, and environmental protection work increases production costs

[0005] However, when using the sub-dry method for cooling cutting, there are the following problems: how to set the cooling conditions and related parameters for different materials, so as to achieve the best cooling effect and the best surface quality of the material? How to ensure the dimensional accuracy and dimensional stability of the processed parts? In the existing technology, the cooling conditions and related parameters are adjusted on the spot by relying on human subjective judgment and limited personal experience after the part processing starts, so the quality of the processed parts is uneven

Sometimes in the process of processing, a large number of workpieces will be scrapped due to continuous adjustment and trying of the best parameters, which not only wastes raw materials, but also greatly increases the production cost of the enterprise

Images