A function that must be improved in medium-speed wire cutting – pitch compensation

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The key issue that currently limits the performance of medium-speed wire cutting machines is pitch compensation. Most of the products available on the market that are referred to as medium-speed wire cutting machines use systems such as HF/HL/YH. Due to their early introduction, these systems lack pitch compensation functionality; therefore, the precision of these machines relies entirely on the mechanical accuracy of their components. Those familiar with machinery know that it is not easy to achieve a precision level of 10 microns solely through mechanical means. Moreover, given the price range of these medium-speed wire cutting machines, it is not possible to use top-quality mechanical components such as lead screws and guides in their manufacture. If such high-end components were used, the precision requirements might be met, but such machines would not be viable in the market. As a result, the vast majority of medium-speed wire cutting machines available today do not meet the national standard precision requirements.

A common approach in the machine tool industry is to use closed-loop control or pitch compensation to offset manufacturing errors, thereby improving both the dynamic and static precision of the machines. This is particularly evident in machining centers – it is now rare to find machining centers without pitch compensation.

Pitch compensation is essentially a method for correcting mechanical precision. After manufacturing is complete, a laser interferometer is used to measure the precision errors at each position. Then, in the CNC system, software is used to compensate for these errors as the machine moves to each position, thereby minimizing the overall error caused by mechanical inaccuracies. Although this method cannot completely eliminate errors compared to closed-loop control, it still significantly improves the mechanical precision of the machines.

Given the current market situation, many knowledgeable people have realized this issue. Among the manufacturers of control systems for medium-speed wire cutting machines, traditional systems like HF/HL/YH do not offer this functionality – at least not in the products currently available on the market. There is also no evidence that they are developing products with this feature. Suzhou Longting’s system is card-based and works under AutoCAD. I remember it having this function as well, but AutoCAD is quite expensive; using pirated versions poses no problem for users, but it does carry certain risks for manufacturers of wire cutting machines ； 　　 　　These new wire cutting systems are still largely in the stage of limited-scale adoption, with most wire cutting manufacturers waiting to see how things develop. I believe these new systems will bring some novelty to the wire cutting industry. Other materials: target flow meter, pressure resistance tester, portable electric baler, gantry grinder