Which components are commonly used in CNC machining

CNC machining has a great influence in the hardware industry, and many companies that need to process parts will be applied to CNC machining. Since CNC machining can be used for complex processing, high requirements and numerous processes, it requires multiple clamping and adjustments to complete the processing of parts.

Usually, the most commonly used parts in CNC processing are special-shaped parts, complex curved surfaces, box parts, special processing, disk cover plates and other parts.

1. Shape parts

Formed parts are parts with irregular shapes, and are mostly processed by point, line and surface. Generally speaking, special-shaped parts have poor rigidity, difficult to control clamping deformation, and difficult to ensure machining accuracy. Some parts of the machining parts are even difficult to complete on ordinary machine tools. When using a machining center for processing, reasonable process measures should be taken, first or second clamping should be made, and the characteristics of multi-station, line and surface mixing of the machining center should be fully utilized to complete multiple or all process contents.

2. Complex surface

In the machinery manufacturing industry, especially the aerospace industry, complex surfaces have special importance. It is difficult or even impossible to process complex surfaces with ordinary machines. The traditional domestic method is to use precision casting, which is conceivable and has very low accuracy. Complex curved surface parts such as various impellers, wind guide wheels, spherical surfaces, various curved surface molding molds, thrusters, underwater vehicle thrusters, and some other shapes of free surfaces. There are several typical comparisons:

a. Cam, cam mechanism

It is widely used in various automatic machinery. As a basic element for mechanical storage and transmission of information, it includes various curved disc-shaped cams, cylindrical cams, conical cams, barrel cams, end-face cams, etc. The machining of such parts can be selected according to the complexity of the cam, three-axis, four-axis or five-axis linkage machining center;

b. Overall impeller

Such components are usually used in compressors, oxygenators, single-screw air compressors, etc. for aircraft engines. For such components, they can be completed by using four-axis or above-four-axis linkage machining centers;

c. Mold category

Such as injection molds, rubber molds, vacuum forming blister molds, refrigerator foam molds, pressure molds, precision casting molds, etc. Use a machining center to process molds. Since the process is highly concentrated, the finishing of key parts such as dynamic molds and static molds is basically completed in one installation, which can reduce the cumulative size error and reduce the repair workload. At the same time, the mold has strong replication and good interchangeability. The remaining work of the fitter should be less, and all parts that are accessible should be completed by mechanical processing as much as possible, so that the work of the mold clamping worker is mainly polishing;

d.Spheric surface

Milling machining centers are available. Three-axis milling only requires ball-head milling cutter for approximate processing, which is relatively low in efficiency and can be used as the envelope surface for processing. The machining center uses a machining center to process complex surfaces, which has a lot of programming workload, and most of them use automated programming technology.

3. Box-type components.

Shell parts generally refer to parts with multiple holes, a cavity inside, and a certain proportion in the length, width and height directions. Such parts are used in the machine tools, automobiles, aircraft manufacturing and other industries. Box parts generally require multi-station processing and plane processing, with high tolerance requirements, especially strict tolerance requirements for shape and position tolerances, which must be milled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, drilled, In the process of milling, drilling, drilling, drilling, drilling, drilling and other processes, there are many tools required, and the machining accuracy requirements are high on ordinary machine tools. Tools that require multiple processing times need to be replaced frequently.

For machining centers for chassis parts, when there are many machining stations and parts that need to turn corners multiple times on the workbench, a horizontal boring and milling machining center is generally used. When there are fewer processing stations and the spacing is not large, a vertical machining center can be optionally used to process from one end.

4. Special treatment

After mastering the functions of the machining center, and using certain molds and special tools, you can complete some special process work, such as engraving, engraving and engraving patterns on the metal surface; installing them on the spindle of the machining center High-frequency electric spark power supply can perform linear scanning surface quenching on metal surfaces; high-speed grinding heads are installed with machining centers, which can achieve small-module involute bevel gear grinding.

5. Disk, sleeve, plate

Curved disc sleeves or shaft parts, such as shaft parts with flanges, keyways or square heads, such as shaft parts with flanges, shaft parts with keyways or square heads, etc.; plate parts with porous processing , such as various motor covers. Disc parts with end faces and curved surfaces with distributed hole systems should be selected from optional horizontal machining centers with vertical machining centers and radial holes.

Through the above introduction, it is not difficult to see that CNC machining centers have a wide range of applications and there are many types of workpiece processing, so many companies need to use CNC machining centers when processing precision parts, molds, etc., such equipment. It is expensive, so you must maintain it during use.