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Slant bed process of nc lathe

by:SNK     2020-08-27
Slant bed CNC lathe process release date: 2015 - 11 - 23 clicks: 2682 slant bed CNC lathe processing craft and the processing technology of the engine lathe are similar, but as a result of the numerical control lathe is a clamping, automatic processing to complete all turning process, the process should pay attention to the following: a, choice of rational cutting parameter for efficient metal cutting processing, the processed material, cutting tool and cutting condition are three main factors. These determine the processing time, tool life and processing quality. Economic and efficient processing method must be reasonable selection of the cutting condition. Cutting condition of three elements: the cutting speed, feed and cutting depth directly caused the damage. Along with the increase of cutting speed point temperature will rise, will produce mechanical, chemical, thermal wear. Cutting speed increased by 20%, the tool life will reduce 1/2. Feed conditions and behind the cutting tool wear in minimum range. Behind but feeding, cutting temperature rise, wear and tear. It is smaller than the influence of cutting speed on tool. The influence of cutting depth on cutting tools while there is no cutting speed and feed, tiny cutting deep, but in the hardening layer is cutting material, will also affect the service life of cutting tools. According to users of processed material, hardness, cutting condition, material selection, feed and cutting depth etc. Use the cutting speed. The most suitable processing conditions of the selected on the basis of these factors is selected. There are rules, stable wear to life is the ideal conditions. Second, choose reasonable tool 1, coarse, should choose high strength, good durability knives, in order to meet the big car large turning, the feed back. 2, fine cars, want to choose high precision, durability, good cutting tool, to ensure the machining accuracy of requirements. 3, to reduce the changeover time and convenient for the knife, should try to use machine knives and machine clip blade. In actual operation, the choice of the tool life and tool wear, machining dimensions change, surface quality, cutting noise, heat and so on. When determining the processing conditions, it is necessary to study according to the actual situation. For difficult-to-machine materials such as stainless steel and heat resistant alloy, can use coolant or choose good rigid blade. Three, the reasonable choice jig 1, try choosing universal fixture clamping workpiece, avoid using special fixture; 2, part locating datum coincidence, in order to reduce the positioning error. Four, determine the processing route processing route is index control machining process, cutting tool trajectory and the direction of relative parts. 1, should be able to guarantee machining accuracy and surface roughness requirements; 2, should as far as possible to shorten processing route, decrease tool empty travel time. Five links with the machining allowance, processing route at present, in the numerical control lathe has not yet reached its widespread use condition, the general should be put on the blank allowance too much, especially including forging, casting hard cortex arrangement on the ordinary lathe machining allowance. If must use slant bed CNC lathe processing, attention should be given to the flexible arrangement of the program.
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