Aluminum Profile CNC Turn-Mill Machining

Aluminum profile CNC turn-mill compound machining is an advanced compound machining process that integrates turning (lathe function) and milling (machining center function) into a single machine. In conventional machining, an aluminum part requiring both turning and milling usually needs to be turned on a lathe, then removed, transferred to a milling machine, re-clamped, tool-set and milled - multiple setups are not only time-consuming but, more importantly, each setup accumulates positioning errors that affect final precision.

Turn-mill compound technology completes all processes on one machine in a single setup - external cylindrical turning, internal hole boring, end-face milling, keyway milling, drilling, tapping, chamfering - eliminating positioning errors from multiple setups, with dimensional precision stably controlled at ±0.02mm and surface roughness up to Ra0.8μm. It also reduces inter-process waiting time and manual intervention, raising machining efficiency by 30%-50% compared with traditional segmented machining.

Shanghai Chuangsi Aluminum Co., Ltd. is located in Qingpu, Shanghai, with its own physical factory equipped with multiple turn-mill compound machining centers and five-axis linkage equipment. We can process all grades of aluminum alloys including 6061-T6, 6063-T5, 6005-T6, 6082-T6 and 7075-T5. One-stop delivery from profile extrusion (partner lines) to turn-mill compound machining to surface treatment - customers deal with only one supplier.

Core machining capabilities:

1. Integrated turn-mill machining: Completes all turning and milling processes in a single setup on one machine, eliminating multi-setup errors, with dimensional precision stably controlled at ±0.02mm. Especially suitable for sleeves, flanges, housings and other aluminum parts requiring multi-process machining.

2. Precision turning of external circles and internal holes: The CNC turning spindle drives the workpiece to rotate while the tool feeds axially and radially, completing precision machining of rotational features such as external cylindrical surfaces, external conical surfaces, internal holes, internal conical surfaces and end faces. Turning accuracy ±0.01mm, surface roughness Ra≤0.8μm.

3. Precision milling of end faces and keyways: An independent milling spindle combined with a power turret completes non-rotational features such as end-face milling, keyway milling and plane milling while the workpiece is in a single setup. Milling positioning accuracy ±0.02mm.

4. Drilling, tapping and chamfering: Synchronously completes precision drilling (through holes, countersunk holes, blind holes, mounting holes), end-face tapping and drill-tap machining, as well as edge chamfering and deburring on one machine. Hole position accuracy ±0.02mm, thread accuracy meets the 6H grade standard.

5. Complex rotational contour machining: Through C-axis linkage control, processes complex features such as polygonal contours, eccentric holes and curved surfaces on top of turning, reducing subsequent processes.

Machining capability parameters:

Item	Parameter / Description
Equipment Type	Turn-mill compound machining centers, five-axis linkage equipment
Turning Accuracy	±0.01mm
Milling Positioning Accuracy	±0.02mm
Comprehensive Dimensional Accuracy	±0.02mm
Surface Roughness	Ra≤0.8μm (high precision up to Ra≤0.4μm)
Max. Machining Length	6500mm
Max. Swing Diameter	400mm
Available Materials	6061-T6, 6063-T5, 6005-T6, 6082-T6, 7075-T5
Machining Method	Custom from drawings, custom from samples
Process Integration	Turning + milling + drilling + tapping + chamfering completed in one setup
Executive Standard	GB/T 6892-2023 high precision grade
MOQ	50kg
Sample Lead Time	3-7 days (depending on complexity)
Bulk Lead Time	7-15 days after sample approval
Production Location	Qingpu, Shanghai

Selection guide:

Application Scenario	Recommended Material	Key Machining Requirements
Automation equipment shaft parts	6061-T6	External turning accuracy ±0.01mm, concentricity ≤0.02mm
Robot joint connectors	6061-T6 / 7075-T5	Turn-mill one-shot forming, high precision
AI server heat sink base plate	6061-T6 / 1070	Milling flatness ≤0.02mm, high drilling accuracy
Flange discs and precision fittings	6063-T5	External circle + end face + drilling completed in one setup
Valve bodies and hydraulic components	6061-T6	Integrated internal hole turning + end-face milling + tapping
Sensor housings and mounting seats	6063-T5	Thin-wall turning, multi-process integration

Typical application scenarios:

• Automation equipment shaft parts

• Robot joint connectors

• AI server heat sink base plate

• Flange discs and precision fittings

• Valve bodies and hydraulic components

• Sensor housings and mounting seats

• 5G communication equipment chamber components

• Medical equipment precision rotating parts

FAQ (Frequently Asked Questions)

Q1: What is the difference between turn-mill compound machining and ordinary CNC machining?

A: Ordinary CNC machining usually uses single-function equipment - a lathe can only turn, a milling machine can only mill. A part requiring both turning and milling must be turned on a lathe then transferred to a milling machine for re-clamping and machining, and multiple setups accumulate positioning errors. Turn-mill compound machining completes all turning and milling processes in a single setup on one machine, eliminating multi-setup errors, for higher precision and higher efficiency.

Q2: What types of aluminum parts is turn-mill compound machining suitable for?

A: It is especially suitable for shaft parts, flange discs, precision fittings, valve bodies, sensor housings, heat sink base plates and other aluminum parts requiring both rotational machining (turning) and feature machining (milling, drilling, tapping). If a part only needs pure milling or pure turning, ordinary CNC machining suffices; if both processes are needed, turn-mill compound is the better choice.

Q3: What precision can turn-mill compound machining achieve?

A: Turning accuracy ±0.01mm, milling positioning accuracy ±0.02mm, comprehensive dimensional accuracy stably controlled at ±0.02mm. Surface roughness up to Ra0.8μm, and high-precision requirements can reach Ra0.4μm.

Q4: How much more efficient is turn-mill compound machining than the traditional method?

A: Turn-mill compound machining eliminates inter-process setup, handling and waiting time, raising machining efficiency by 30%-50% compared with traditional segmented 'lathe + milling machine' processing. It is especially suitable for batch parts, where the efficiency advantage is even more pronounced.

Q5: What is the maximum size of aluminum parts that can be machined?

A: Max. machining length 6500mm, max. swing diameter 400mm. We can handle extra-long shaft parts and large flange discs.

Q6: What is the difference between turn-mill compound machining and five-axis linkage machining?

A: Turn-mill compound machining centers on a turning spindle and integrates milling functions, suitable for multi-process integrated machining of rotational parts. Five-axis linkage centers on milling and is suitable for five-face machining of complex curved surfaces and special-shaped parts. The two are complementary; we are equipped with both and can select the optimal machining scheme according to part features.