What are the requirements for CNC machining to choose the cutting amount?

The cutting amount must be determined before CNC milling machine processing, so what is the principle?

When programming a CNC milling machine, the programmer must determine the amount of cutting for each process, including spindle speed, back-cutting amount, feed speed, etc., and input it into the program in the format specified by the CNC system. The cutting amount of computer gong processing requires different cutting amounts for different processing methods. Reasonable selection of cutting amount has a great influence on the surface quality, accuracy and processing efficiency of the parts. This is also difficult to grasp in practice. It takes a wealth of practical experience to be able to determine the appropriate cutting parameters.

When programming the CNC milling machine, it can only be initially determined based on the programmer's experience and the recommended value of the cutting amount of the tool, and the final cutting amount will be determined according to the debugging results of the part CNC program and the actual processing conditions.

The selection principle of cutting amount for CNC milling machine processing is: the main purpose of rough machining is to improve productivity, while taking into account economy and processing cost; when semi-finishing and finishing, the cutting efficiency and processing cost should be taken into account at the same time. The processing quality of the parts. It is worth noting that the cutting parameters (spindle speed, cutting depth and feed rate) are an organic whole. Only when the three are adapted to each other and reach the most reasonable matching value can the best cutting parameters be obtained.