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What errors may occur during CNC machining and CNC machining​?

 CNC machining and numerical control machining are a method to control the movement of machine tools and the production process of machining through computer digitization and information digitization. It is an intelligent numerical control device developed as an economical, high-speed, reliable, multi-functional, intelligent, and open structure. CNC machining is also an important indicator that can measure the continuous level and comprehensive ability of a safety technology, as well as the degree of modernization of related science and technology capabilities, especially in aviation, biology, medical and other high-tech cultural industries, and it is also a powerful indicator. reflect. So, what errors may occur during CNC machining and CNC machining? Let us understand together:   The use of approximate machining motion or approximate tool contours causes errors in the CNC principle of machining. The reason why it is called machining principle error is because of the error in machining


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What are the rules for metal stamping die scrap tube?

The Purpose Standardize the management of the scrapping of the company's metal stamping dies, prevent the loss of company assets, and formulate this system specially. Scope of application It is suitable for the management of the company's scrap molds. Definition If the molds listed in the assets of the company fall under one of the following circumstances, the use management department may apply for scrapping. 1. Molds that exceed the specified service life. 2. The mold is severely damaged by accidents or accidents, and molds that cannot be repaired or have no repair value. 3. Metal stamping dies that have not reached the service life, but due to safety, quality, efficiency and other issues, the repair still fails to meet the minimum requirements of the customer's product process or affects the production safety and efficiency. 4. Product customers have stopped placing orders or have not placed orders for molds in several years. 4. Responsibilities 1. Responsibilities of th

The ability to integrate the application of multifunctional plastics in car body parts


No matter what kind of coating process is used for the surface quality of automobiles, the surface quality of the plastic parts of the car body must meet the requirements of Class A. Therefore, plastics must have good processing fluidity. In addition, in order to ensure the smallest possible gap size between parts under extreme temperature conditions, the thermal expansion coefficient of the body plastic parts must be small. If the body plastic part is used as the skin of the metal substrate, the quality of the appearance can only be guaranteed when the thermal expansion coefficient of the substrate and the surface layer are close. Generally, the coefficient of thermal expansion of thermoplastics is much larger than that of steel. Fillers are generally added to reduce the coefficient of thermal expansion. However, the addition of fillers tends to always reduce the surface quality. Fiber-reinforced thermosetting plastics can mostly meet the requirements of car body structural parts in terms of strength and rigidity, but its surface quality is often difficult to meet the A-level requirements. In addition, it is difficult to paint fiber reinforced plastics.

Another option to solve this problem is to use an injection compounding process, that is, a highly filled plastic and a colored high-quality film/sheet are compounded by injection. The composite parts produced no longer need to be painted and can meet the requirements of Class A surface quality. BASF cooperated with other companies to study the injection and compounding of long-fiber reinforced ABS with polymethyl methacrylate and ASA co-extruded film to produce the tail cover (luggage compartment cover) of the car; GE produced a polycarbonate co-extruded film. Extruded sheet (model: Sollx), which has been used in the production of body parts for mini-cars 2 Current status of the application of plastics on car bodies 2.1 Plastics for body parts are light in weight, good in processability, high in design freedom, and multi-functional The ability of plastics to be integrated in the application of car body parts is one of the most interesting aspects of plastics as a body material. Especially in today’s era where individualization is emphasized, the style of the car has a great influence on the customer’s desire to buy. The plastics currently used as bodywork mainly include sheet molding compound (SMC), reinforced reaction injection polyurethane (PUR-RRIM) and glass fiber reinforced thermoplastics. All three types use glass fiber reinforcement, mainly to meet the rigidity requirements of the car body.

For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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