![]() The machining route should be shortened as much as possible to reduce the tool idle travel time.ĥ.It should be able to guarantee the machining accuracy and surface roughness requirements.The machining route is the movement track and direction of the tool relative to the part during the machining of the index-controlled lathe. The part positioning datum coincides to reduce the positioning error.Try to use general fixtures to clamp the workpiece, avoid using special fixtures.In order to reduce the tool change time and facilitate tool setting, machine clamped knives and machine clamped blades should be used as much as possible.When finishing turning, choose high-precision and durable tools to ensure the requirements of machining accuracy.When roughing, choose a tool with high strength and good durability to meet the requirements of large back-grabbing and large feed when roughing.For difficult-to-process materials such as stainless steel and heat-resistant alloys, coolants or blades with good rigidity can be used. When determining the machining conditions, it is necessary to conduct research according to the actual situation. However, in actual operations, the choice of tool life is related to tool wear, dimensional changes to be processed, surface quality, cutting noise, and machining heat. Regular, stable wear and longevity are the ideal conditions. The selection of suitable machining conditions is selected on the basis of these factors. The user should select the cutting speed to be used according to the processed material, hardness, cutting state, material type, feed rate, depth of cut, etc. Although the influence of cutting depth on the tool is not as large as the cutting speed and feed rate, when cutting at a small depth of cut, the material to be cut will produce a layer, which will also affect the life of the tool. It has less influence on the tool than cutting speed. ![]() However, the feed rate is large, the cutting temperature rises, and the back wear is large. The relationship between the feed condition and the wear on the back of the tool occurs in a very small range. ![]() Cutting speed increased by 20%, tool life will be reduced by 1/2. With the increase in cutting speed, the temperature of the tool tip will rise, which will cause mechanical, chemical, and thermal wear. ![]() The three elements of cutting conditions: cutting speed, feed rate and depth of cut directly cause tool damage. The economical and effective machining method must be a reasonable choice of cutting conditions. These determine the machining time, tool life and machining quality. The machining technology of CNC lathes is similar to that of ordinary lathes, but because CNC lathes are one-time clamping and continuous automatic machining to complete all turning processes, the following aspects should be paid attention to.įor high-efficiency metal cutting machining, the material to be processed, cutting tools, and cutting conditions are the three major elements. Publish Time: 05/27 2021 Author: Site Editor Visit: 10288 ![]()
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