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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 reform presupposition of driving the vehicle’s secondary spring system at full speed

Comparison of the axial stiffness The bearing capacity of the combined spring P=P1+P2=(Gd18c3n1+Gd28c3n2) F=134.94F The bearing capacity of the original cylindrical spring P=Gd28c3n2=93.3F The axial stiffness of the combined spring The axial stiffness of the original spring= 134.94F93.3F=1.446, so the axial stiffness is obviously improved.

Comparison of lateral stiffness and bending stiffness The lateral stiffness of a single spring can be calculated by the following formula: Pr=Ed48nD32<1+43(HD2)2(2+L)>F The bending stiffness of a single spring can be calculated by the following formula: M=Ed416D2nH(2 +L) Fr is the combined spring axial stiffness. The original spring axial stiffness=d41D2n2H+d42D1n1Hd42D1n1H=1.225 This ratio shows that the improved combined spring has a greater increase in stiffness in all directions.

Improvement of the secondary spring The secondary spring is located between the bogie and the carriage. After the locomotive speeds up, the increase in the exciting force makes the secondary spring’s lateral stiffness low and its anti-resonance ability poor. For this reason, when it is ensured that the weight of the car body is not increased, the characteristics of the spring are changed by changing the shape of the spring. According to relevant data <1>, it is proved that the characteristic curve of a general cylindrical compression spring is approximately a straight line, the stiffness is stable, the structure is simple, and the manufacture is convenient. However, the spring is mainly along the axial direction, the transverse shear and bending rigidity is very poor, and the anti-resonance ability is poor. The reduced-diameter spiral conical compression spring has a gradually increasing characteristic curve, that is, the stiffness gradually increases, which is beneficial to eliminate or ease resonance, and has a compact structure and good stability.

concluding remarks

The design of the primary and secondary spring systems of high-speed electric locomotives plays a key role in the running quality of the entire locomotive. By improving their design, the exciting force generated during high-speed operation of locomotives can be greatly reduced, and the lateral stiffness and axial stiffness can be increased, thereby realizing active control of resonance of locomotives during high-speed operation and improving the safety of locomotive operation. Sex and stability.

The 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 comaponent volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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