Inverted chains can compensate for the shortcomings of electric hoists, helping crane workers to accurately adjust the height of the lifted object and achieve precise assembly. As a device for lifting heavy objects from bottom to top, inverted chains are not suitable for all lifting situations. And the screw jack is a device that can lift heavy objects from bottom to top, which can make up for the shortcomings of the reverse chain.

A certain mechanical equipment company has undertaken a roller frame manufacturing project, which requires the manufacture of non-standard roller frames with significant differences in shape design and size standards. The precision requirements for each product are very high. Faced with this unprecedented challenge of non-standard accuracy, technicians believe that if the usual marking method is used, not only will it be inefficient and the product accuracy cannot be guaranteed, but it will also result in a high probability of rework.

After multiple discussions and arguments, they ingeniously utilized a screw jack to quickly adjust the horizontal position of the workpiece's three-point adjustable support, and then used square boxes as vertical auxiliary benchmarks, greatly improving processing efficiency and accuracy, avoiding material waste and project delays, and receiving high praise from customers.