CNC Milling POM

CNC milling properties of POM

Polyoxymethylene, also known as polyformaldehyde ether or polyformaldehyde, is a commonly used engineering plastic, and its CNC milling characteristics include the following:

Good Cutting: POM has a low cutting force and low coefficient of friction, which makes it easy to machine during CNC milling with good cutting performance.

Excellent dimensional stability: POM material has excellent dimensional stability and is not easily affected by moisture and water absorption, so the dimensional change of the machined parts is small.

Good wear resistance: POM material surface hardness is high, with good wear resistance, suitable for parts that require wear resistance manufacturing.

Low coefficient of friction: POM has a low coefficient of friction and is suitable for application scenarios that require reduced wear and friction, such as sliding parts and bearings.

Excellent Rigidity: POM materials have high rigidity and can maintain good shape stability, which is suitable for parts processing that require high precision and rigidity.

Chemical resistance: POM materials have good stability to general chemical substances, suitable for parts manufacturing in some chemical environments.

Low water absorption: POM material has low water absorption, not easy to absorb water, to maintain the dimensional stability of parts.

Easy to polish: POM material has a smooth surface, easy to polish and subsequent processing.

Benefits of POM CNC milling

The benefits of POM (polyoxymethylene) CNC milling are as follows:

Excellent cutting performance: POM has low cutting force and low coefficient of friction, making the CNC milling process cutting performance is good, easy to process.

High dimensional stability: POM material has excellent dimensional stability, is not easy to moisture and water absorption, small changes in the size of the processed parts, to maintain good shape stability.

Good abrasion resistance: POM material has high surface hardness and good abrasion resistance, suitable for the manufacture of wear-resistant parts, to extend the service life of parts.

Low coefficient of friction: POM has a low coefficient of friction and is suitable for applications that require reduced wear and friction, such as sliding parts and bearings.

Excellent Rigidity and Strength: POM materials have high rigidity and strength, making them suitable for machining parts that require high precision and rigidity.

Chemical resistance: POM has good stability to general chemicals, making it suitable for parts manufacturing in a number of chemical environments.

Low water absorption: POM material has low water absorption and does not easily absorb moisture, keeping parts dimensionally stable.

Easy machining and polishing: POM material is easy to CNC milling and has a smooth surface for subsequent polishing and treatment.

Good electrical insulation: POM is an excellent electrical insulation material and has important applications in the electrical field.

Industries where CNC milling of POM parts is applied

CNC milling POM parts have a wide range of applications in many industries, mainly including the following industries:

Electronic and electrical industry: POM materials have good electrical insulation properties, so they are widely used in the electronic and electrical fields for the manufacture of insulating parts, connectors, sockets, switches, motor parts and so on.

Automotive industry: POM materials are often used in the automotive industry to manufacture car parts, such as steering wheel gears, seat slides, door parts, etc. Their low friction and wear resistance make them suitable for automotive parts.

Medical Devices: POM materials have excellent biocompatibility and are widely used in the manufacture of medical devices, such as surgical instruments, artificial joints, surgical instruments and so on.

Textile and apparel industry: POM materials are commonly used in the textile and apparel industry to manufacture parts such as zippers, fasteners, buttons, etc. Because of their low friction and abrasion resistance, they help to improve the service life of the products.

Mechanical Manufacturing: POM materials are used in the field of mechanical manufacturing to make high-precision parts, such as bearings, gears, couplings and so on.

Packaging Industry: POM materials are widely used in the packaging industry to manufacture various parts, such as packaging fixtures, pull rings, slides and so on.

POM CNC milling common problems and solutions

In the process of POM CNC milling, some common problems may be encountered, the following are some common problems and the corresponding solutions:

Fast tool wear: POM has a certain degree of viscosity, which may lead to faster tool wear. The solution is to choose wear-resistant tool materials, such as carbide tools, and appropriately reduce the cutting speed to extend tool life.

Sticky knife phenomenon: POM material is sticky, easy to form sticky knife phenomenon on the tool, affecting the processing quality. The solution is to choose the appropriate tool geometry and cutting parameters, increase the flow of cooling lubricant to reduce the sticky knife phenomenon.

Cutting temperature is too high: the melting point of the POM material is low, easy to produce high temperatures in the machining process, which may lead to deformation of the parts or burns. The solution is to control the cutting speed and the use of cooling lubricants to reduce the cutting temperature.

Parts surface quality: POM materials are prone to burrs or untidy cutting edges. The solution is to choose the appropriate cutting parameters and tools to ensure that the cutting process is stable and improve the surface quality of machining.

Unstable machining size: POM material may cause unstable machining size due to thermal expansion during the machining process. The solution is to control the cutting speed and the use of cooling lubricants to ensure processing stability.

Chip handling: POM material cutting chips are long and soft, not easy to handle and clean. The solution is to increase the flow of cooling lubricant to keep the chips discharged smoothly and avoid chips jamming the tool.

Surface roughness does not meet the requirements: POM material cutting is easy to produce burrs and surface roughness is not ideal. The solution is to choose the appropriate cutting parameters and tools, appropriate polishing and subsequent processing.

Cutting noise: POM material cutting may produce large noise. The solution is to use suitable cutting parameters and tools to reduce cutting vibration and noise.

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