In the machining process, the structure of the inner ring groove shape as shown in Figs. 1 and 2 often appears on the parts of the casing or the casing. The traditional processing methods are mostly processed by ordinary drilling machines or boring machines. However, for some annular inner seal…

Most of the parts and materials processed by our factory are 45 steel and 27SiMn steel quenched and tempered materials, which have high strength and easy cutting. Due to the large production volume, the demand for tools is correspondingly large. In order to reduce the cost of the tool, make fu…

At present, there are four types of digital display devices in China, namely inductive synchronizer, grating, magnetic (?) and capacitive gate. The collar type digital display meter belongs to the grating type. It is widely used in machine tools such as horizontal lathes, milling machines and …

There are many reasons for the taper of the cylindrical surface of the turning, sometimes due to the poor positional accuracy of the spindle axis of the headstock relative to the bed rail. In the case of no-quantity and inspection tools, the following emergency methods can be used to solve the…

The eucalyptus type root groove milling machine of our factory is the key machine tool for processing the blade root groove of 125MW and 300MW steam turbine. It is necessary to exchange 8 tools for milling the first stage root groove, and the 8 different length milling cutters must be used. A …

The coordinate measuring machine is a high-precision and high-efficiency automatic testing equipment that integrates science and technology in optics, precision machinery, electronics and computer. How to make full use of its superior working characteristics and maintenance in production testi…

Bearing ferrules are highly susceptible to deformation during heat treatment, a problem that is common in the bearing manufacturing industry. Because there are many uncertain factors affecting the deformation and dimensional change of the ferrule, and it is difficult to solve, it has become a m…

A valve stem (Fig. 1) produced by our factory has an empty sipe at the intersection of φ30mm and φ27mm on the workpiece, and there are six through holes around the groove wall, leaving burrs after drilling. In the past, we used manual burrs, which were inefficient and accidentally caus…

When drawing mechanical parts drawings, it often encounters the cumbersome work of drawing common parts such as standard parts and center holes. The block operation command BLOCK and the block write command WBLOCK provided in AutoCAD can write a common graphic into a block, and then use the IN…

The size of the M18×1.5 set screw grinding process is shown in Fig. 1. The outer diameter of φ18mm is used for positioning, and the outer diameter of φ16.97mm is the outer diameter before rolling the thread on the thread rolling machine. After the lathe process, it is time-consumin…

1. Introduction In the maintenance of the planer and the single-arm planer, there is a common problem - with a knife. The specific performance is as follows: When the machine table starts to return after the cutting stroke is completed, the tool holder has a random and non-quantitative retracti…

The NUM1000 CNC system is a new generation of NC system that NUM Corporation of France has introduced to China in recent years. With the increasing scope of its application, the data transmission function of the numerical control system has received much attention. Its powerful communication f…