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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

Elimination method of automobile steering pump noise

The steering pump is the power source for car steering. At present, major domestic models such as Jiefang, Dongfeng, Great Wall Pickup and Jinbei Bus all use vane-type power steering pumps. This kind of steering pump is equipped with a flow control valve and a safety valve. It is small in size, light in weight, and simple in system connection. The disadvantage is that it is noisy.

1: The main reason for the noise generated by the steering pump is the mixing of air in the system, especially in the suction area of ​​the hydraulic pump, because the pressure is low, it is easy to produce cavitation, that is, the volume of the bubble is compressed in the high pressure area, and the volume suddenly increases when it reaches the low pressure area. , Produce an explosion and form noise. Therefore, the oil inlet pipeline must be sealed reliably during installation to prevent the joint from loosening due to vibration; the sealing material must be very reliable, and there must be enough hydraulic oil in the oil tank.

2: The second cause of steering pump noise is the failure of the flow control valve, such as improper fit between the valve hole and the valve core, the valve hole is rough, the safety valve and the valve seat are dirty and not sealed, the gasket is not round or has gaps, etc. Both can cause noise. Especially when the control valve is working, the system pressure is transient, which makes the control valve spring fatigue deformation and failure, which will aggravate the noise. Therefore, check the use of the control valve, check whether the mating parts are worn or not, check whether the spring is invalid, and replace these parts if necessary.

3: The third cause of steering pump noise is mechanical vibration. Therefore, when installing the steering pump, ensure that the coaxiality error between the pump shaft and the main engine is less than 0.1mm, and the inclination is less than 30. The connecting pipe should not be too thin or long, and minimize the elbow to avoid liquid vortex. The speed of the steering pump should not be too high to avoid damage to the bearings.

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

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