How to cut a very thin strip?

In the cutting operation of 0.1mm, 0.08mm or even 0.06mm ultra-thin copper and aluminum strip materials, the traditional zero-gap knife distribution scheme is difficult to adapt to the actual working conditions. Even if a high-precision round knife is used, its own thickness tolerance of ±1μm is superimposed on the cumulative error of multiple tool positions, which is very easy to lead to the misalignment of the upper and lower knives, causing equipment failure. In response to this problem, we propose a set of optimized tool distribution methods based on manual correction, provided that the cutting equipment and tools need to have a sufficient accuracy basis.

For this reason, under the premise that the equipment and tool accuracy meet the requirements, we use the combination of software tool distribution and manual adjustment to optimize the cutting gap. Based on the zero gap scheme, the width of the knife position on one side of the female knife is appropriately increased through continuous correction through actual trial cutting, so that it forms a reasonable positive deviation relative to the male knife, so as to obtain a stable and controllable cutting gap.

In order to achieve precise quantitative control of the gap, we refine the thickness tolerance of the tool ±1μm: -1~-0.33μm is the "negative deviation gear", -0.33~+0.33μm is the "zero deviation gear", +0.33~+1μm is the "positive deviation gear", and the theoretical average of each gear The deviation values are -0.33μm, 0μm and +0.33μm respectively.  By reasonably matching the deviation gear of the male and female knives, the cutting gap can be stably controlled in the range of 0.33μm to 1μm. This manual intervention method can effectively offset the unit error and cumulative error, and achieve the high-precision cutting effect that cannot be achieved by software calculation alone.