1. CNC Milling Principle
It formulates the processing technology and processing parameters according to the technical requirements such as the shape, precision, size and surface roughness of theproduct. When the servo device sends a control signal to the servo motor, the spindle motor will rotate the tool. Then x, y, z three-way servo motor controls the tool andproduct to move relative to each other according to the trajectory, so as to realize the cutting of theproduct.
2. CNC Milling Feature
A. Simplification on the machining process -The use of CNC milling can concentrate the process and reduce the number of clamping parts. The processing of complex three-dimensional parts can be easily realized through NC programs, which greatly simplifies the processing process.
B. High processing efficiency - CNCmilling is carried out in an orderly manner under the guidance of NC programs, with less manual intervention, short time forproduct indexing and tool change duringprocess. Multi-tool parallel machining can also be realized, which greatly improves machining efficiency.
C. High processing precision - Milling is carried out in an orderly manner under program control, with less manual intervention and smaller machining errors. At the same time, the current CNC milling machinealso adopt closed-loop control, which can compensate for theemergent errorsand greatly improve the machining accuracy.
3. Product Types
A. Planar parts:
Parts whose profile is planar or can be developed into planar parts are called planar parts. Generally, it can be processed by two-coordinate linkage, and its CNC milling is relatively simple.
B. Surface parts:
Parts whose surface is space and cannot be developed into a plane are called curved parts. In any kind of machining, the milling cutter is always in point contact with the surface of the part.
C. Beveled parts:
Parts whose profile cannot be developed into a plane but have straight lines are called variable bevel parts. During peripheral milling, the contact between the machined surface of the part and the milling cutter cylinder can be a straight line.
D. Holes and threads:
Drilling, expanding, reaming, boring and tapping are carried out by using fixed-size cutters. Generally, CNC milling has the functions of boring, drilling and reaming.