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Why choose the dual-spindle automatic docking solution for complex shaft parts processing?

Ningbo Hongjia CNC Technology Co., Ltd. 2025.06.06
Ningbo Hongjia CNC Technology Co., Ltd. Industry News

1. Improvement of precision dimension

Traditional single-spindle processing of long shafts requires multiple clamping, and repeated positioning errors lead to coaxiality deviation (generally > 0.05mm). The dual-spindle automatic docking horizontal turning center uses automatic docking technology to achieve seamless transfer of workpieces between the two spindles, without manual intervention throughout the process, and the coaxiality error can be controlled within ±0.003mm.

Cutting heat accumulation during long shaft processing causes deformation. The dual spindle adopts symmetrical cutting force balancing technology: the front and rear spindles synchronously apply reverse cutting force to offset unilateral stress, reducing deformation by 60%.

2. More efficient production process

After the front spindle completes rough turning, the workpiece is automatically transferred to the rear spindle for fine turning, eliminating the disassembly-transfer-reinstallation link. For example, in the processing of a 2-meter-long wind power spindle, the time consumption per piece is reduced from 8 hours to 2.5 hours.

Double turrets work together: When the front spindle is turning the outer circle, the rear spindle is drilling/tapping synchronously to achieve turning and milling compound processing. The linear grating ruler (resolution 0.1μm) + servo motor is used to compensate for position deviation in real time, and the docking repeat positioning accuracy reaches ±0.002mm. The spindle structure can achieve seamless docking of workpieces between the two spindles, reduce the number of clamping times, and improve processing efficiency. The spindle has stable performance and high speed, which is suitable for precision processing of various materials.

 

3. Cost optimization

cost

Advantages of dual spindle solution

Data Validation

Labor costs

One person operates two spindles, reducing manpower requirements by half

Electronic parts factory saves 120,000 yuan per month

Fixture cost

Eliminate secondary clamping tooling

The investment in production line fixtures has been reduced by 60%

Energy cost

Centralized processing shortens equipment operation time

Annual electricity consumption reduced by 250,000 kWh

Scrap loss

Improved precision and reduced rework rate

The scrap rate of automobile parts has increased from 8% to 2%.

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