The main objects of the numerical control turning processing and machining process

( 1) Processing object (1) the outline shape complicated or difficult to control the size of the revolving body parts for CNC device has a straight line and arc interpolation function, and part of the lathe numerical control device has some non-circular curve interpolation function, thus turning consist of any straight line and plane curve outline of complicated shape revolving body parts.  ②精度要求高的零件零件的精度要求主要指尺寸、形状、位置和表面等精度要求，其中的表面精度主要指表面粗糙度。 For example, high dimensional accuracy, Up to 0. 001 mm or smaller) Parts, cylindricity demanding cylinder parts, plain wire straightness, roundness and gradient are demanding cone parts and so on. (3) with a special thread these parts to heavy refers to the pitch of axially symmetrical parts, Or lead) , variable ( Increase/decrease) Pitch, uniform pitch and variable pitch for a smooth transition between the surface of cylinder and cone thread or thread parts, and high precision of modulus of threaded parts ( Such as cylinder, circular worm) And end face ( Disc) Thread parts, etc.  数控车床车削螺纹时，主轴转向不必像普通车床那样交替变换，它可以一刀又一刀不停顿地循环，直到完成，因此它车螺纹的效率很高。 Because the CNC lathe is made of carbide forming blade usually, can use the high speed, thus turning the screw is high precision, small surface roughness. ④淬硬工件的加工在大型模具加工中，有不少尺寸大而形状复杂的零件，这些零件热处理后的变形量较大，磨削加工有困难，因此，可以用陶瓷车刀在数控机床上对淬硬后的零件进行车削加工，以车代磨，提高加工效率。 ( 2) Parts drawings to analyze parts processing (1) analysis of material, shape, size, precision and blank shape and heat treatment requirements, etc, in order to determine the suitability of the part on the nc machine tool processing, or which kind of numerical control machine is suitable for processing. Sometimes determine on a digit-controlled lathe processing which process or which a few surface of the parts. (2) to determine the process to determine the parts processing methods ( Such as clamping apparatus, the clamping positioning methods, etc. ) And processing route, Such as the cutting point, feed line) , and determine the processing quantity of the process parameters ( Such as cutting feed speed and spindle speed, cutting width and depth, etc. ) 。 (3) numerical calculation according to drawings and processing route, calculate the numerical control machine tools required for the input data, such as adjacent intersections of geometric elements and a contour tangent point, a straight line or arc approximation contour adjacent intersection of geometric elements and point of tangency calculation. (4) write parts program data of single calculated according to the processing route and established processing dosage, combined with the numerical control system of procedures section format write parts processing program list. In addition, still should fill in the relevant process documents, such as the nc machining process card, nc cutter card, workpiece installation and zero setting card, etc. (5) program programmed input is input to the numerical control lathe. 6. The points for attention during the processing of the according to the steps lathe, pay attention to personal safety.