In machining, parts with a spherical shape are often encountered, and some spherical parts have hig

In the straightness error detection, the current methods include knife mouth measurement, meter mea

When we are processing the square or hexagonal head on the workpiece such as the butterfly valve sh

1. introduction Since Balzers invested in its physical coating tools in 1980, the application and d

The video surveillance system is mainly composed of four parts: front-end camera part, transmission

The technical requirements of modern automotive stamping parts are developing in the direction of co

There are many types of quick release nuts, and a new type of quick release nut (as shown) is now i

A rivet cutter head is shown in Fig. 1. The cutter is reverse cut, and its inner hole structure is

This paper takes the processing screw hole of the Y4100Q diesel engine body injection pump as an ex

1. Talking about “stepping on mines” If you are using a parametric CAD system, you must

Measuring force is an important technical indicator of measuring instruments. The measurement force

Thread diameter is an important indicator of thread interchangeability. The calculation of the thre