CNC machining is so widely used, but do you know what types of parts it can process?

As we all know, CNC machining centers are suitable for processing parts that are complex, have many processes, have high requirements, require multiple types of ordinary machine tools and numerous tool fixtures, and require multiple clamping and adjustments to complete the processing.

Its main processing objects include box parts, complex curved surfaces, special-shaped parts, plate-type parts and special processing.

01

Box parts

Box parts generally refer to parts with more than one hole system, a cavity inside, and a certain proportion in the length, width, and height directions.

Such parts are commonly used in machine tools, automobiles, aircraft manufacturing and other industries. Box-type parts generally require multi-station hole system and surface processing, and the tolerance requirements are relatively high, especially the geometric tolerance requirements are relatively strict.

For machining centers that process box-type parts, when there are many processing stations and the parts require multiple rotations of the worktable to complete, a horizontal boring and milling machining center is generally selected.

When there are few processing stations and the span is not large, a vertical machining center can be selected to process from one end.

02

complex surface

Complex curved surfaces occupy a particularly important position in the machinery manufacturing industry, especially in the aerospace industry.

Complex curved surfaces are difficult or even impossible to complete using ordinary machining methods. In our country, the traditional method is to use precision casting, and it is conceivable that its accuracy is low.

Complex curved surface parts such as: various impellers, guide wheels, spheres, various curved surface forming molds, propellers and propellers of underwater vehicles, as well as some other shapes of free-form surfaces.

The following are typical ones:

①Cam, cam mechanism
As a basic component for mechanical information storage and transmission, it is widely used in various automatic machines. To process such parts, a three-axis, four-axis linkage or five-axis linkage machining center can be selected according to the complexity of the cam.②Integral impeller type

Such parts are commonly found in compressors of aircraft engines, expanders of oxygen-generating equipment, single-screw air compressors, etc. For such profiles, a machining center with more than four axes linkage can be used to complete them.

③Mold type

Such as injection molds, rubber molds, vacuum forming blister molds, refrigerator foam molds, pressure casting molds, precision casting molds, etc.

④Spherical surface
Can be milled using a machining center. Three-axis milling can only use ball-end milling cutters for approximate processing, which is less efficient. Five-axis milling can use end milling cutters as the enveloping surface to approximate the spherical surface.

When processing complex curved surfaces with a machining center, the programming workload is relatively large, and most of them require automatic programming technology.

03

Special-shaped parts

Special-shaped parts are parts with irregular shapes, and most of them require mixed processing of points, lines, and surfaces at multiple stations.

The rigidity of special-shaped parts is generally poor, the clamping deformation is difficult to control, and the machining accuracy is difficult to guarantee. Even some processing parts of some parts are difficult to complete with ordinary machine tools.

When processing with a machining center, reasonable process measures should be adopted, one or two clampings, and the characteristics of the multi-station point, line, and surface mixed processing of the machining center should be used to complete multiple processes or all process contents.

04

Discs, sleeves and plate parts

Disc sleeves or shaft parts with keyways, radial holes, or hole systems distributed on the end face, curved surfaces, such as shaft sleeves with flanges, shaft parts with keyways or square heads, etc., as well as those with more holes Processed plate parts, such as various motor covers, etc.

Disc parts with distributed hole systems and curved surfaces on the end surface should choose a vertical machining center, while those with radial holes can choose a horizontal machining center.

05

Special processing

After mastering the functions of the machining center, with certain tooling and special tools, the machining center can be used to complete some special process work, such as engraving, engraving lines, and patterns on metal surfaces.

Installing a high-frequency electric spark power supply on the spindle of the machining center can perform line scanning surface quenching on the metal surface.

Installing a high-speed grinding head on a machining center can realize the grinding of small-module involute bevel gears and the grinding of various curves and surfaces.

From the above introduction, it is not difficult to see that CNC machining centers have a wide range of applications and process many types of workpieces. Therefore, many companies need to use CNC machining centers for processing precision parts, molds, etc. Of course, this kind of The equipment is expensive and requires more care and maintenance during use.