The correct process when CNC machining injection molds

author: Universe plastic

2024-04-27

The processing of injection molds on CNC machine tools needs to be carried out in accordance with prescribed procedures to ensure their accuracy and quality.

CNC machine tool processing of molds is a complex process, which must be done carefully. Universe Plastics engineers will introduce the process steps of injection mold processing through CNC machine tools:

1. Mold blank preparation

The blanks are mostly metal. In terms of forging processing, the raw materials used are usually bars, plates and pipes. The operator can select the shape and assembly size of the blank.

2. Rough machining

Taking milling as an example to perform rough machining of parts, as long as the contours of the parts and islands are machined, the processing path can be generated. It can automatically add arcs at the sharp corners of the tool path to ensure the smoothness of the tool path and meet the requirements of high-speed machining. Mainly used for milling flat surfaces and milling slots. You can choose multi-contour and multi-island processing.

3. Semi-finishing

Complete machining of secondary surfaces and prepare for machining of primary surfaces.

4. Heat treatment

The material is heated, kept warm, and cooled in the medium. By changing the material structure, these processes are connected to each other and cannot be interrupted.

5. Finishing

The working margin of finishing is smaller than that of roughing. Choose good tools, control the speed and rotation speed, and pay attention to the size of the material and the gloss of the appearance.

6. Cavity surface treatment

Different surface treatment methods in mold design can greatly improve and enhance the surface properties of the mold by changing the chemical composition, structure, and properties of the mold surface. Such as hardness, wear resistance, friction performance, mold release performance, thermal insulation performance, high temperature resistance and corrosion resistance.

7. Mold assembly

There are two forms of assembly, fixed assembly and mobile assembly. Different batch productions use different assembly methods. During the assembly process, some mold parts need to be polished and corrected.

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