Plastic Machined Parts
High precision plastic machined parts from China, CNC machining services
Precision CNC Machining for High-Quality Plastic Parts by SYM.
With over 25 years of experience, SYM Precision Machining has been a trusted partner for high-precision plastic machined parts, delivering exceptional quality and precision to customers worldwide. We specialize in machining a wide variety of plastic materials, tailored to meet the specific needs of each application.
Types of Plastic Machined Parts
We work with a comprehensive range of plastic materials, including:
POM (Delrin, Acetal)
High strength, low friction, and excellent dimensional stability.
Teflon (PTFE)
Outstanding chemical resistance and low friction properties.
PE (UPE)
High wear resistance, often used for sliding and bearing applications.
ABS
Strong, lightweight, and versatile for various applications.
PVC
Excellent chemical resistance, ideal for piping and fittings.
Nylon (PA)
High toughness and wear resistance, widely used for gears and bearings.
PEEK
Exceptional heat resistance and strength, suitable for high-performance industries.
PVDF
Outstanding resistance to harsh chemicals and UV exposure.
PC (Polycarbonate)
High impact resistance and transparency, often used in optical and structural applications.
Deformation Issues in CNC Plastic Machining
Plastics have lower stiffness, higher thermal expansion, and softer mechanical properties compared to metals, making them more prone to deformation during CNC machining. Common causes of deformation include:
Thermal Expansion
Heat generated during cutting can expand the material, altering dimensions.
Cutting Forces
Excessive forces can flex or distort the workpiece.
Material Stress
Internal stresses in the plastic can release and cause warping during machining.
How SYM Minimizes Plastic Deformation
Plastic materials are widely used in various industries, but they present unique challenges during CNC machining, particularly regarding deformation. At SYM Precision Machining, we apply our expertise to minimize deformation and meet strict tolerance requirements, ensuring high-quality results for every project.
Controlled Cutting Parameters
Lower cutting speeds and feeds to reduce heat generation. Use sharp tools to minimize cutting forces.
Cooling and Lubrication
Apply appropriate coolants or air streams to keep the material cool during machining.
Workpiece Support
Provide adequate clamping and support to prevent movement or bending.
Progressive Machining
Remove material gradually in multiple passes to reduce stress concentration.
Post-Machining Stabilization
Allow parts to stabilize after machining to detect and correct any residual deformation.
Tolerance for CNC Machined Plastic Parts
Dimensional Tolerance
±0.254 mm (±0.01 inches) as standard.
Custom Tolerances
Tighter tolerances are achievable upon request, considering the material’s machinability and application requirements.
Advantages of CNC Machining Plastic Parts Over Injection Molding
No Tooling Cost
CNC machining does not require expensive mold, making it ideal for low-volume production or prototypes.
Faster Turnaround
CNC machining allows rapid production without waiting for mold fabrication.
Greater Material Versatility
CNC machining accommodates specialty plastics and composites that might not be suitable for injection molding.
Superior Precision
CNC machining achieves tighter tolerances and finer details compared to injection molding.
Design Flexibility
CNC machining allows for frequent design changes without additional tooling cost.
Key Considerations for Plastic Machining
Material-Specific Behavior
Understand the plastic's thermal and mechanical properties to select the right machining strategy.
Tool Selection
Use tools designed for plastics to reduce burrs and improve surface quality.
Final Application
Factor in the part's operating environment (temperature, load) when defining tolerances and finishes.
SYM’s Expertise in Precision Plastic Machining
ISO Standards Compliance
We adhere to industry standards, ensuring consistent quality and precision.
Experience and Technology
Our 25+ years of experience and advanced CNC machines allow us to overcome machining challenges, including deformation issues.
Custom Solutions
Tailored strategies for each project, from material selection to final inspection, deliver optimal results.
Plastic Machined Parts Gallery
Get Your Parts Into Production Today!
Contact us today for a custom solution to your plastic machining needs