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CNC Turn-Mill Combination

What is CNC Turn-Mill Combination?

CNC turn-mill machining is an advanced manufacturing technology that integrates the functions of a lathe and a milling machine onto a single machine.

Simply put, traditional machining requires first turning the part to a circle on a lathe, then removing it and mounting it on a milling machine for milling grooves or drilling; while a turn-mill machining center allows you to complete all processes on one machine, or even in a single setup.

Our CNC Turn-Mill Combination Technology

One-Hit Precision: The parts do not need to be moved between lathes and milling machines, eliminating displacement errors caused by repeated clamping and ensuring that coaxiality and positional accuracy reach the micrometer level.

Faster Lead Times: By merging processes, the turnaround time from several days to several hours is reduced. This decreases waiting time and significantly improves production efficiency.

Mastering Complexity: Supports 4-axis or 5-axis linkage, easily machining complex parts with oblique holes, irregular grooves, and spiral patterns, breaking through traditional machining limitations.

Cost Efficiency: Reduce manual intervention, fixture development, and scrap rate. Especially when handling high-value, high-precision parts, the overall cost per unit is more competitive.

Comparison Dimensions	Traditional Machining (Separate Lathe and Milling )	CNC Turn-Mill Machining
Number of clamping operations	Two or more clamping operations (requiring manual handling and fixture changes)	One-Hit Machining
Machining accuracy	Positional errors due to repeated clamping exist.	Extremely high (eliminates cumulative tolerances, excellent coaxiality).
Production cycle	Longer processing time (requires queuing for processing at different machines)	Extremely short processing time (multiple processes completed consecutively, fast delivery)
Geometric complexity	Limited by numerous limitations, struggling to handle complex intersecting features.	Powerful (easily handles side holes, oblique grooves, and spiral patterns).
Labor costs	High (requires multiple operators and multiple tool adjustments)	Low (completed by a single machine, high degree of automation)
Quality stability	Susceptible to human factors	Extremely stable (automated path, high consistency)

Traditional Machining Vs CNC Milling And Turning

How CNC Turn-Mill Combination Works

1. Dual Spindle & Live Tooling

Live Tooling: Unlike traditional lathes that use fixed tools, mill-turning machines are equipped with a "live tooling" unit with a built-in motor. This means that tools (such as milling cutters and drills) can rotate autonomously at thousands of revolutions per minute.

Synchronous Operation: When the spindle is stationary over the workpiece, the live tooling unit can perform cutting on the workpiece surface, similar to a milling machine.

2. The Magic of Multi-Axis: The power of mill-turning machines lies in their multi-axis linkage capabilities:

C-Axis: Controls the angular position of the spindle (workpiece) rotation to an accuracy of 0.001 degrees, allowing the machine to perform machining at precise locations on cylindrical surfaces.

Y-Axis: Allows the tool to move off-center. This is crucial for machining eccentric holes, keyways, or flat surfaces, and is a hallmark of high-end mill-turning machines.

3. Machining Modes Switching

Turning Mode: The workpiece rotates at high speed, and the tool moves (machining cylindrical shapes).

Milling Mode: The workpiece is precisely positioned or rotates at a low speed under controlled conditions (C-axis linkage), while the powered tool rotates at high speed for 3D contour cutting.

4. One-in-One Clamping Technology

By equipping the machine with a sub-spindle, the workpiece can be automatically transferred inside the machine to the sub-spindle for machining the back side after the front side has been machined. The entire process requires no manual intervention, ensuring extremely high coaxiality between the front and back sides of the part.