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Precision machining is becoming more and more common. Manufacturing industries are highly competitive hence requirements are also much higher. Shorter production time, processing quality and adaptability is the key to customer satisfaction. To meet these conditions, more and more manufacturing companies have adopted high-end CNC machining machines such as four and five axis machines, and Weimi company is also among them.
Axis machining – description
Three-axis machine has only three motion axes (usually defined as X, Y, and Z ), and can only achieve movement in three directions. The structures along the machining tool axis direction can be processed, but the side structural features cannot be processed.
An unconstrained tool (or cnc parts) has in total six degrees of freedom in space. The reality is that during metal cutting, a huge cutting force and friction force are generated between the cnc parts and the tool. In order to prevent the position of the metal parts from moving, the cnc parts must be clamped and fixed. Five-axis CNC machining means that there are at least five coordinate axes (three linear coordinates and two rotation coordinates) on a machine tool, and it can simultaneously coordinate movement for processing under the control of a computer numerical control system (CNC).
Five-axis CNC machine tools have a variety of different structural forms, which are mainly divided into the following three categories: table tilt, spindle tilt, and table/spindle tilt.
The five-axis linkage machining center is suitable for complex, multi processes and high quality processing, the parts need multi-type of ordinary machine tools and fixtures and the multiple clamping and adjustments.
Main usage of five-axis machining.
1. Cabinet parts
Cabinet parts generally require multi-position porosity and plane processing and higher tolerance requirements. Especially strict geometric tolerances, usually needs to go through milling, drilling, expanding, boring, reaming, tapping and other processes. it is difficult to process on ordinary machine tools, it needs to be clamped and aligned many times, and the machining accuracy is difficult to guarantee. When processing cabinet parts, the table needs to be rotated multiple times to process four horizontal surfaces, that’s why we use horizontal machining centers commonly.
2. Complex surfaces
Complex curved surfaces have an important role in the machinery manufacturing, especially in the aerospace industry. Complex surfaces are difficult or impossible to accomplish using ordinary machining methods. A five-axis machining center is the most suitable to develop parts such as: various impellers, spherical surfaces, various curved forming tools, propellers (for underwater vehicles as well) some other free-form curved. The milling cutter makes an envelope surface to approach the spherical surface. The complex curved machining need most of the time requires automatic programming techniques because it is a very complex process.
Unique shaped parts are the parts that need to be processed in various ways of points, lines and surfaces. The rigidity of special shaped parts is generally poor as it is difficult to control the deformation caused by clamping pressure hence machining accuracy is quite difficult, even there are many parts that are difficult to process with ordinary machine tools. When processing with a machining center, reasonable technological measures should be adopted, one or two clamping, and the characteristics of multi-position, line, and surface processing of the machining center should be used. That’s the only way to ensure the quality and completeness of the entire process.
4. Middle & center plate, sleeve , plate parts
The parts have key grooves, or radial holes, or hole with distributed ends, curved sleeves or shaft parts, such as shaft sleeves with flanges, shaft parts with key grooves or square heads, etc. There are also plate parts with more holes processing, such as various motor covers. sleeve parts with distributed holes and curved surfaces on the end should choose vertical machining centers, and radial machining centers use for radial holes parts.
5. Unique processing
We can combine the functions of machining center that is equipped with certain, special tools. That’s the way we can complete some special technological tasks e.g engrave letters, lines and patterns on metal surfaces. High frequency electric spark power supply can perform line scanning and hardening on metal surfaces; high-speed grinding heads can be installed on the machining center to achieve small modulus involute bevel gear grinding and various curve and surface grinding.
The above parts can be produced by our company. If you need to know more, you can send us an online inquiry or email to discuss further cooperation. As long as you provide drawings, we can guarantee your satisfaction! Weimi Hardware Technology Co., Ltd. is more than happy to become your loyal business partner!