Why Is Spindle Positioning Accuracy Important In Turning And Milling Combined Processing?

Why is spindle positioning accuracy important in turning and milling combined processing?

One piece of equipment can both turn and mill, doubling the efficiency for turning and milling combined processing. Why is spindle positioning accuracy important? , but the prerequisite is to understand the main axis.

Many factories have purchased turning and milling composite equipment, but during the actual operation, they found that it was difficult to improve the processing accuracy and rework occurred repeatedly. The problem is usually neither tool nor program related, but the spindle's positioning accuracy is insufficient after switching modes.

If the deviation is small when switching once, it will be a disaster.

When turning, the spindle rotates with the workpiece, but when milling, the spindle itself rotates the tool. In these two different states, the positioning methods of the spindle are completely different.

When converting from turning to milling, the positioning deviation is only a few arc seconds, and the keyway position will deviate. In the mass production process, if a single part is scrapped, it may cost tens of thousands of yuan. Coupled with the time loss caused by rearranging production, the accumulated losses in a year are considerable.

What is the concept of 2 arc seconds?

The relationship between one degree and arcsecond conversion determines the difficulty of such accuracy. 2 arcseconds are equivalent to 1,800th of one degree, which is equivalent to a few hundredths of the thickness of a human hair.

This kind of precision is also at a high level in the international market. In the past, only products imported from Europe could achieve it. Now, domestic brands have begun to catch up.

How to lock the chainring

The core lies in the mechanical locking of repeatable positioning accuracy. Every time you switch, you need to return to the same position, and the errors cannot be superimposed.

The material used is the same type of special steel used in high-speed rail. This steel has been heat treated and ultra-cryogenically treated to ensure that it will not deform in the long term. The combined configuration of the bearings must take into account both rigidity and precision during operation, and every link must be controlled in place.

Is there any difference when comparing imported equipment?

Grinding machines made in Switzerland and three-dimensional coordinate testing equipment produced in Germany are used to ensure that the dimensions of each part are consistent. This operation is not only a strict requirement for accuracy, but also an important guarantee for the overall mass production process to maintain a stable state.

The spindle made in China can achieve a positioning accuracy of two arc seconds, which shows that it is not inferior to items produced in Europe in terms of key indicators. It can be said to be a good and feasible choice for processing workshops that are dedicated to pursuing cost-effectiveness.

How much can you save by replacing the precision spindle?

Once the position is determined, the rate of scrap is directly reduced, and the time of trying to cut and calibrate the tool is also saved. The efficiency of equipment utilization has been improved, and complex parts can be clamped in one go without the need to replace equipment back and forth.

Have you ever encountered rework of the turn-milling compound device in your factory due to inaccurate spindle positioning? Welcome to communicate and discuss in the comment area.