CNC Milling is a process where a milling tool cuts away the material in a rotary motion. It allows manufacturers to shape raw materials into specific forms, creating components with desired dimensions and geometries. Milling machines can also achieve extremely tight tolerances and high precision.

CNC automatic programming method

How many methods are there for NC machining programming?

Automatic programming of CNC machining
The automatic programming of CNC machining is also called computer-aided programming, that is, most or all of the programming is done by the computer. Such as completing the calculation of coordinate values, compiling part processing procedures, automatically outputting and printing processing procedures and preparing control media.

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Milling impeller processing of milling machine

Solve the deformation of parts in high-speed milling

The high-speed milling system is a complex dynamic system, which is prone to chatter vibration when machining thin parts. Flutter is a very strong relative vibration between the tool and the workpiece during the milling process. This kind of vibration will destroy the relative correct position of the tool and the workpiece, and reduce the surface processing quality and milling efficiency. For a long time, cutting chatter has been a major research topic in the machinery manufacturing industry and milling processing.

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Ultra-precision milling technology

Ultra-precision CNC milling parts

Ultra-precision cutting started with SPDT technology, which is supported by air bearing spindles, pneumatic slides, high rigidity, high-precision tools, feedback control, and environmental temperature control to obtain nano-level surface roughness. Diamond cutters are mostly used, which are widely used in the processing of copper flat and aspheric optical elements, plexiglass, plastic products (such as camera plastic lenses, contact lens lenses, etc.), ceramics and composite materials.

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CNC machining of prismatic parts

Turning and milling machining of prismatic parts

The machining center performs multi-process (turning, milling, drilling, boring, tapping, etc.) and multi-face composite processing on prismatic parts through automatic tool change and table indexing. Practice has proved that the composite machining center is indeed beneficial to solve the shortcomings of long delivery time, low resource utilization, more products in process and slow capital turnover of small and medium-sized machinery manufacturing enterprises. Turning and milling combined processing has thus gained more and more common applications in industrial production.

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cnc milling parts

What are difficult-to-machine materials?

Difficult-to-machine materials are materials with poor turning and milling workability. Performance of this material is greater than or less indicators (HB> 250, σb> 1000 MPa, δ> 30%, αk> 100 MPa, K <41.8 W / mk) one or more, are all difficult to cut materials. It can also be measured by phenomena in the cutting process (cutting force, cutting heat, tool wear and tool durability, processed surface quality and chip control, etc.).

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Machining of medical NiTi memory alloy

Problems when cutting difficult-to-machine materials

Cutting is roughly divided into turning, milling, and center-tooth-based cutting (end face cutting of drills and end mills, etc.). The cutting heat of these cutting processes has different effects on the cutting edge. Turning is a continuous cutting, the cutting force on the tip does not change significantly, and the cutting heat continuously acts on the cutting edge; Milling is a kind of intermittent cutting, and the milling force is intermittently acting on the tip of the blade, and vibration will occur during milling. The heat effect on the cutting edge is the heating during cutting and the cooling during non-cutting alternately, and the total amount of heat received is less than during turning.

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