Custom Aluminum CNC Turning and Milling Parts

XCM CNC machines custom aluminum CNC turning and milling parts, combining internal and external diameters, end faces, radial holes, milled flats and threads on the same part. Rotational mating surfaces achieve 0.012 mm coaxiality, and radial hole position tolerance relative to the axis is 0.015 mm. Turning is performed on a Mazak I-100S, while lateral features are milled on Brother machining centers. Cross-hole deburring, dimensional inspection and anodizing are available for finished parts.

Aluminum parts are easy to machine and lightweight, making them suitable for connectors, flanges and housings with lateral interfaces. The factory is certified to ISO 9001, ISO 13485, IATF 16949 and GJB9001C. Orders start at one piece. Prototypes typically take 3-7 days and production typically takes 10-15 days, depending on part complexity and quantity.

Aluminum CNC Turn-Mill Datum Transfer: 0.012 mm Coaxiality, 0.015 mm Radial Hole Position

Mating outside diameters, central bores and radial holes on aluminum connectors share a rotational datum across turning and milling operations. Radial hole position tolerance relative to the axis is 0.015 mm, rotational mating surface coaxiality is 0.012 mm and radial runout is 0.01 mm. When machining in separate operations, datum pickup for turning and milling must follow the same assembly requirements. Fewer setups can reduce datum transfer error, while projecting mounting lugs or large parts may require separate turning and milling operations.

Aluminum Wrench Flats and Mounting Lugs: CNC Milled on Turned Parts, Flatness 0.02 mm

After outside diameters are turned on aluminum fittings and circular flanges, wrench flats, mounting lugs and fastening holes are milled. Milled flatness is 0.02 mm and perpendicularity relative to the rotational axis is 0.02 mm / 1000 mm. Wrench flats support pipe connection tightening, mounting lugs connect brackets or housings, and locating faces define installation orientation.

Aluminum Cross-Hole and Internal Passage CNC Machining: L/D 10 Deep Holes, 3.0 mm Min Channel

Axial holes, lateral pipe connection holes and internal passages can be machined into aluminum valve bodies, cylinder end caps and fittings. Deep-hole capability is L/D = 10, and minimum internal channel width is 3.0 mm. Intersections of cross-holes and assembly hole openings are deburred after machining to reduce subsequent assembly and passage-cleaning problems. Minimum drilled hole diameter is 0.2 mm. Cleaning, plug and sealing requirements are specified together with the part.

Aluminum Turn-Mill Part Inspection: CMM Datum-Based Verification Across Operations

Internal and external fits, radial hole positions and mounting faces on combined turned and milled parts are inspected with a Hexagon Inspector Classic 06.08.06 CMM against rotational datums to verify dimensional relationships across operations. Turned outside diameter and bored hole roughness are checked with a Leader NCA8106 roughness tester. Functional threads are inspected with go/no-go or ring gauges. Anodized fit dimensions can be rechecked against drawing requirements during final inspection.

Turning and Milling Equipment and Quality Systems

XCM CNC operates Mazak I-100S, DMG 80mono, Matsuura MX-520 and Brother machining centers for turned and milled features. Its quality systems include ISO 9001, ISO 13485, IATF 16949 and GJB9001C.

Supporting Services from Small Connectors to Large Structural Parts

The machining range covers small connectors through large structural parts. Internal and external threading, hole machining, cross-hole deburring and edge breaking can be coordinated with turning and milling. Sandblasting and anodizing can also be arranged together, allowing complete parts to be ordered from one supplier.

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

XCM CNC groups its CNC equipment into four tiers: mainland China, Taiwan, Japan, and Europe and North America. Lower-tolerance operations such as rough turning of outside diameters and general side holes use mainland Chinese or Taiwanese equipment. Bearing registers, mating bores and precision radial hole positions requiring h6/H7 accuracy and 0.015 mm position tolerance use imported machines such as DMG and Mazak. Equipment is matched to each part’s actual accuracy requirements to reduce machining costs while meeting drawing requirements.

Drawing-Based Datum Transfer between Turning and Milling

Combined turned and milled parts require datum pickup when moving from turning to milling. The factory plans workholding and alignment for each operation around the drawing’s datum system, so turned mating surfaces and milled lateral features follow the same dimensional requirements. Prototypes can first verify shaft-to-bore fits and lateral interfaces. Prototypes take 3-7 days, with production taking 10-15 days after approval.

Cross-Hole Deburring and Internal Cleaning Coordinated with Machining

Intersecting holes in valve bodies and fittings can develop internal burrs that affect passage flow and subsequent assembly. Deburring is completed within the machining process, without requiring a separate supplier. Cleaning requirements, plug arrangements and burr standards at pipe connection openings are agreed together with the part to reduce procurement steps.