When processing thread on nc lathe knife

when we in thread machining with CNC lathe, chosen as a tool for cutting. In the large pitch screw machining, because of tool wear too fast, would amount to a machining after thread standard change big, low accuracy. Via exploring for many years, we explore a thread on nc lathe machining points of coarse and fine turning tool. In the machining process, after the rough turning blade abrasion to the limit, transfer finish turning blades to rough turning tools, finish turning tool from the beginning a new blade. This can ensure the machining accuracy of thread cutting together, also drop tool cost. The key depends on the method of coarse and fine thread tools for accuracy. 1, the operation method of end face and the cylindrical workpiece cutting a knife ( End flat, cylindrical) And then measure the outside diameter D, in coarse thread cutter. Specific methods are as follows: the rough machining cutter ( T0X00) With hand pulse generator for machining of cylindrical D first. With hand pulse generator in the direction of Z axis is rolled out to work, input values (D X axis of the knife knife) 。 Write down the X axis flash specific data. With hand pulse generator on the flash data recorded by the X axis feed towards negative 1 ~ 2 mm. Same with hand pulse generator in the negative direction of Z axis feed, cutting tool to the workpiece. Input Z0 ( The Z axis of knife) 。 When coarse threading tool of cutter. According to the method of screw thread finishing, operation process and rough turning cutter knife method thoroughly. So you don't disorderly buckle occur in the process of cutting. Even more cutting, the cutting tool are the same disorderly buckle phenomenon will not occur. 2, matters needing attention, 1) The knife on the X axis, the machine flash digital each are not identical. Must be good the practice of the cutting tool data recorded. After exit the X axis, the thread cutting tools X axis feed data must be the same, there can be differences. ( 2) In the process of the knife, close to the workpiece X axis and Z axis, hand pulse generator choice feeding 0. 001 mm range.

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