Numerical control lathe machining process of thread

CNC lathe is higher than general turning operation to the requirement of thread cutting, diamond cutting force generally higher, threading insert cutting edge radius is lesser, relatively weak. In the thread processing, feed speed is necessary and thread pitch precisely. On the pitch for 8 threads per inch ( tpi） , knife with the necessary turn/inch or 0 to 8. The 125 - inch/roll feeding speed. Compared with general turning applications, thread cutting feed speed to 10 times higher, the effect of the thread processing in the blade tip force 100 - may be high 1000 times. Accept the end effect force of the radius is commonly 0. 015 inches, and conventional car diamond cutting blade radius on the CNC lathe processing thread of 0. 032 inches. About thread machining blade, the radius of the licensing of thread form root radius ( The intrusive rules by relevant thread specification) The strict constraints. Cutting action, it also be influenced by the demand with information not generally turning in the shear process and thread deformation or it will attack. Cutting force and high effect force gathered a narrow scale as a result of: thread machining blade to accept much higher than the average tool stress. Therefore, in the numerical control lathe processing, thread processing technology can be divided into 'fastening screw' and 'transmission thread', let's talk about nc lathe machining thread way: 1. Cutting lathe processing thread lathe processing method commonly used to have a car thread, milling, grinding, tapping screw and thread, etc. ; Without machining method with less rolling thread and rolling, etc. ; Special processing method with edm and edm conjugate synchronous inversion processing, etc. 2. Thread cutting principle of CNC lathe spindle and the cutting tool, it is necessary to adhere to strict movement relationship between the spindle ( Artifacts) Not once, a lead knives evenly distance. 3. Machine tool adjustment in the CNC lathe processing thread, in view of the thread turning we want ahead of time: adjustment spindle speed and pitch.

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