The material processed by CNC machine tools is usually steel, and its hardness is high. Especially in the first part processing, due to the programming and the error of the tool setting, the shape and size of the parts are often not easy to meet the pattern requirements, resulting in material waste.
At the same time, beginners often have various safety accidents in the operation training of CNC machine tools, resulting in damage to CNC machine tools and tools, as well as a large amount of material waste. From the perspective of safety and material saving, the author has tested the composite paraffin material instead of steel in recent years, and applied it to the first trial production and teaching training of CNC machine tools, and achieved good results.
1. Characteristics of composite paraffin materials
(1) Saving materials After the composite paraffin material is used, the materials can be recycled, used repeatedly, energy consumption is low, and the recycling process will not cause harm to the environment. As a substitute for steel, the first piece of trial production and teaching training for parts, the production and use costs are very low, and has a very broad application prospects.
(2) Saving tools Steel processing has a large wear on the tool, especially for beginners, which often causes tool collisions, and the tool loss is large.
The price of CNC tools is very high, and the losses caused by collisions are also quite high.
Due to the low hardness of the composite paraffin material, the wear of the tool during the machining process is almost zero. When the tool collides with the part, the material is broken and does not have any influence on the tool. At the same time, the tool can be used for a long time without grinding and replacing, saving A lot of tool costs.
(3) Without the use of cutting fluid, the hardness of the composite paraffin material is much lower than that of the steel. No heat is generated during the machining process, and there is almost no wear on the tool. Therefore, no cutting fluid is required for turning or milling, which saves cutting fluid. cost of.
(4) Improve the safety of machine tool operation The first piece of trial production of CNC machining and the training process for beginners often occur. The tool China Metalworking Online Copyright and parts collide, causing personal injury, tool and material scrap. The use of composite paraffin as a processing material, even if a collision occurs, only the material will be broken, and it will not fly out, which will effectively protect the operator's personal safety and avoid the precision reduction and damage caused by the collision on the CNC machine tool.
(5) Application range The composite paraffin material can be processed on various CNC machine tools and ordinary machine tools. The blanks can be processed into cylinders, cuboids or special shapes and sizes. The outer contour surface, inner hole, thread and cut can be performed on the machine tool. Processing of grooves and special profiles.
2. Performance of composite paraffin materials
(1) The choice of recyclable materials can be applied to recycled materials in mechanical processing, including low melting point metal materials such as copper, aluminum, etc., non-metallic materials such as plastic, nylon and paraffin.
The recovery of copper and aluminum requires smelting conditions and equipment, and requires specialized manufacturers to concentrate on smelting, and the recycling cost is high. Plastics and nylons need to purchase extruders, which have large equipment investment, high requirements on equipment operation technology and maintenance, and are also likely to cause pollution to the environment. Paraffin wax has a low melting point, low recycling energy consumption, and no pollution to the environment. It is an ideal material.
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