Precautions for cnc precision parts processing

CNC machining refers to manufacturing and processing with CNC machining tools, which is a mechanical automatic machine tool controlled by a program. The control system can logically process the program with control code or other symbol control instructions, decode it with the help of a computer, and then make the machine tool operate and the parts are processed. With the help of NC tool cutting, the rough material is made into semi-finished finished parts. There are many problems that medium and large machinery plants should pay special attention to in machining and manufacturing, such as production safety regulations of medium and large machinery plants, technical regulations of manufacturing process of medium and large machinery plants, and technical specifications and requirements that should be strictly followed in machining and manufacturing. Let’s take a look at the precautions for cnc precision parts processing.

1. When the product workpiece is too high, a knife with different specifications shall be used for roughening, and then a knife shall be used to remove the leftover materials at the corners.

2. The materials with high hardness should be made by reverse milling; If the material hardness is low, it should be processed by down milling; For finish machining, use up milling for manufacturing and processing, and use down milling for manufacturing and processing.

3. The clamping method for machining mechanical parts shall reasonably select the fixed datum and clamping method. When you choose your benchmark, let’s follow the two basic principles of “benchmark unification” and “benchmark coincidence”.

4. When determining the location of the product workpiece on the workbench, it is necessary to take into account the influence of the manufacturing and processing of each place, the specifications of NC tools and the stiffness of NC tools on the quality of the manufacturing and processing products.

5. Tooling and fixtures selected for machining and manufacturing shall be assembled by universal parts as much as possible and can be adjusted, which can reasonably and effectively reduce the production preparation cycle time.

6. All surface fabrication and processing shall be carried out in a fixed clamping process as far as possible. Therefore, it is necessary to select a fixing method that facilitates the fabrication and processing of each surface layer of the product workpiece.

Before CNC machining, the operator of the machining center shall select a good manufacturing and processing solution according to the specification and accuracy of the product workpiece, the size of the deflection angle, the appearance of the NC cutter, the clamping method of the parts and the difficulty level of programming, and other factors, combined with the precautions before CNC machining.