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With the wide application of NC machine tools in production practice, NC programming has become one of the key problems in NC machining. In the process of NC programming, tools should be selected immediately in the state of human-computer interaction. Therefore, programmers must fully understand and master the cutting tools, so as to ensure the processing quality and efficiency of parts, give full play to the advantages of NC machine tools, and improve the economic benefits and production level of enterprises. Now let's talk about the tools commonly used in CNC. 1. Application of milling cutter Milling is the most…

The accuracy of the milling cutter can be compared with the accuracy of the measuring tool, so we should pay attention to and understand its correct use, in order to accurately install the milling cutter on the machine for milling. The clamping methods of milling cutter can be roughly divided into the following types: side fixed type, collet type, hydraulic type, tooth fixed type and heat shrinkable type. Side fixed Weldon It has extremely high holding force, so it is often used in heavy cutting occasions. It is suitable for heavy cutting of traditional machining methods or traditional machines. However,…

Many 3D printed metal parts need to be machined to produce precise surfaces, but 3D printed parts are often lightweight parts with complex geometry, which brings challenges to subsequent machining. When machining 3D printing parts, we need to consider a series of problems, such as whether the stiffness of 3D printing meets the requirements of machining, and how to clamp these complex 3D printing parts with fixtures. Through a 3D printing metal parts machining case shared by additive manufacturing experts, we jointly discuss the challenges and solutions in 3D printing parts machining. 3D printing is a flexible technology with less…

Due to the large thermal expansion coefficient of aluminum alloy parts, it is easy to deform in the process of thin-wall machining. Especially when using free forging blank, the machining allowance is large, and the deformation problem is more prominent. 1. Causes of machining deformation There are many reasons for the machining deformation of aluminum alloy parts, which are related to the material, part shape, production conditions and the performance of cutting fluid. It mainly includes the following aspects: deformation caused by internal stress of blank, deformation caused by cutting force and cutting heat, and deformation caused by clamping force.…

Phosphating is a process of chemical and electrochemical reaction to form phosphate chemical conversion film, which is called phosphating film. The main purpose of phosphating is to protect the base metal and prevent the metal from corrosion to a certain extent; Used for priming before painting to improve the adhesion and anti-corrosion ability of paint film layer; It is used for antifriction lubrication in metal cold working process. 1. Basic principle: The phosphating process includes chemical and electrochemical reactions. The phosphating reaction mechanism of different phosphating systems and materials is complex. Although scientists have done a lot of research in…

With the increasing maturity of microelectronics and computer technology, the development of numerical control technology in China has been promoted. Domestic numerical control systems have been successfully developed, which ensures the quality and performance of numerical control machine tools in China. Because CNC machine tools have the characteristics of strong adaptability to workpiece modification, high machining precision and improving productivity, they have been popularized and applied in various fields. Numerical control technology has been widely used in sheet metal machine tools. It solves the problems of high precision, complex shape and large batch in sheet metal processing. CNC sheet metal…

With the continuous innovation and breakthrough of numerical control technology, five axis machining is adopted by more and more industries, such as aerospace, electric power, shipbuilding, high-precision instruments, mold manufacturing and so on. However, the automatic programming software plays a key role in the five axis machining technology, because the process layout of the tool path, the interference inspection between the tool collet and the workpiece or the fixture, and the identification of the blank residue are all automatically considered by the software, and the programmers can not achieve it through calculation. They just optimize the cutting parameters according to…

With the development of science and technology and the diversification of social needs, the competition of products is becoming more and more fierce, and the renewal cycle is becoming shorter and shorter. Therefore, it is required not only to design new products as soon as possible according to the requirements of the market, but also to manufacture prototypes in the shortest possible time, so as to carry out performance testing and modification, and finally form finalized products. In the traditional manufacturing system, it needs a lot of mold design, manufacturing and debugging, which has high cost and long cycle, and…

In recent years, as people pay more and more attention to environmental issues, automobile manufacturers have been under increasing pressure to improve fuel efficiency. Stricter and more restrictive regulations have brought technical challenges to industrial production and material processing. Among these trends are lower exhaust emissions, lighter bodies and longer service life of parts. The progress in material processing has brought unique opportunities to the field of stainless steel pipe production. Specifically, manufacturers are required to produce such parts. They must have lighter weight, but they must still have anti-corrosion characteristics and meet the strength requirements. In addition, the space…

The random error of machine tool is caused by external conditions and is greatly affected by external conditions. It can be divided into: positioning accuracy error, geometric accuracy error, thermal deformation error and so on. Let's take a brief look at these three errors. 1. Error caused by load deformation of the process system: when turning, the workpiece is often affected by cutting force, clamping force, inertia force, gravity, etc., resulting in corresponding deformation, which eventually destroys the correct relative position between the tool and the workpiece and reduces the machining accuracy of the workpiece. For example, when the stiffness…