Cheap Polycarbonate (PC) CNC Machined Parts Supplier

XCM CNC provides cost-optimized Polycarbonate (PC) CNC machining through tolerance grading, roughness-scope planning, process consolidation, and stock-allowance control. Standard +/-0.03 mm tolerance and Ra 3.2 um milling are included in base pricing; precision features are priced separately. The factory is certified to ISO 9001 and IATF 16949 and uses Qiaofeng large-travel machines and Brother machining centers. MOQ is one piece and standard lead time is 10-15 days. For large guards, transparent windows, and impact panels, engineering separates functional transparent faces from regular structural faces so budget focuses on protection and assembly performance.

Polycarbonate (PC) Tolerance Grading to Reduce Machining Cost

PC regular dimensions at +/-0.03 mm are included in base machining cost; +/-0.005 mm precision features are priced separately after drawing confirmation. For cost-sensitive projects, functional holes can be assessed at 0.015 mm position while noncritical profiles retain standard tolerance, avoiding high hours from applying precision processes to the full part. This is effective for large guards and multi-hole panels.

PC Surface-Finish Scope Planning for Cost Balance

PC standard milling at Ra 3.2 um is included in base price, while Ra 1.6 um precision mating faces and transparent cosmetic faces are applied only where specified. Large guards and windows usually need a precision finish only on the observation side, while the back and mounting edges can remain Ra 3.2 um. Smaller polishing scope lowers machining time and secondary-process cost, with DFM marking faces needing fine machining.

PC Process Consolidation for Small-Batch Economy

Small PC batches can complete milling, drilling, and deburring on one machine in one fixture, reducing re-location and tool-change time. When changing clear, FR, or UV-stabilized PC grades, inspection scope follows drawing datums: CMM inspection targets selected 0.012 mm coaxiality and 0.015 mm position, while regular dimensions use go/no-go gauges and caliper sampling.

PC Material Yield and Equipment Matching for Value Parts

Allowance on large PC parts follows fixture direction and expected annealing deformation, reducing scrap and rework from insufficient stock. Standard-range features (+/-0.03 mm, Ra 3.2 um, and regular threads) run on domestic or Taiwan equipment instead of importing high-hour capacity. Functional-face polishing and protective film apply only to specified areas before shipment, reducing unnecessary finishing cost.

Complete Quality System and Equipment Coverage

The factory organizes quality processes around ISO 9001, ISO 13485, IATF 16949, and GJB9001C, using DMG, Mazak, Matsuura, Brother, and other equipment for polycarbonate transparent parts, impact-resistant windows, and large protective guards. Drawing review for PC transparent panels, flame-retardant parts, and medical-device housings can confirm stress control, polishing, and protective packaging together.

Broad Size Coverage

Machining covers needs from small connectors to large structural parts, including PC transparent windows, impact-resistant panels, small covers, larger guards, medical-device housings, and flame-retardant transparent parts. Three-axis travel reaches 3000 x 1600 x 1400 mm and turning diameter reaches 1250 mm; the production plan is confirmed for fixturing, stress-cracking risk, polishing, and transport protection.

Tiered Equipment Strategy for Low-Cost CNC Machining, Quality-Assured Production

XCM CNC uses CNC equipment from mainland China, Taiwan, Japan, and Europe or the United States. Lower-tolerance operations can run on domestic or Taiwan machines, while high-precision work uses imported equipment such as DMG and Mazak. Matching equipment to actual precision requirements reduces machining cost while meeting drawing requirements.

Tolerance and Roughness-Graded Quotation

PC quotation is graded from the drawing: +/-0.03 mm and Ra 3.2 um are included in the base machining charge, while +/-0.005 mm precision features and Ra 1.6 um finish faces are priced by area and quantity. DFM review marks standard-scope versus added operations so customers see cost details before quotation approval. NDA signing is available for drawings.

Small-Batch Process Consolidation Reduces Unit Cost

Small PC batches complete milling, drilling, and deburring in one fixture, reducing tool changes and repeated location. Inspection focuses on drawing-critical features, while regular dimensions use gauge and caliper sampling rather than full CMM inspection. Transparent-face protective film and packaging occur only before shipment, avoiding intermediate waiting steps.