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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

Insufficient tightening of wire joints in air-conditioned passenger cars

  With the rapid development of China’s railway passenger transport industry, new types of centralized power supply and fully air-conditioned passenger trains are gradually replacing old-type passenger trains, and have now become the main body of all-track inter-office direct passenger trains. In recent years, fire accidents and dangers caused by the electrical system of air-conditioned passenger trains have occurred frequently, and the vehicle department has also discovered a large number of electrical fire hazards in the maintenance and operation of air-conditioned passenger cars. Fire accidents, dangers, and hidden dangers have brought many adverse effects on the normal transportation and production of railways. How to grasp the regularity of electrical fires in air-conditioned passenger cars and improve the ability to prevent and control passenger car fires has become the focus, difficulty and key point of current passenger car fire safety. The author talks about some superficial views on this. The main reason for the frequent occurrence of electric fire hazards in air-conditioned passenger cars: the diversity of voltage systems, electricity consumption and power generation in air-conditioned passenger cars greatly increases the probability of electric fire hazards. Ordinary 22 type non-air-conditioned passenger cars have simple electrical systems, as well as lighting fixtures, air-conditioning systems, electric tea stoves, video broadcasts, warm water tanks, electronic display screens, axle temperature alarms, refrigerators, dining car exhaust fans and other electrical facilities and electrical loads Large, there are many electrical connection points. Single-section air-conditioned passenger cars are powered by their own diesel generator sets; most of the entire train of air-conditioned passenger cars are powered by generator cars, with two main transmission lines, which are AC three-phase four-wire power supply systems. The application of complex transmission and distribution systems and a large number of electrical facilities and equipment has increased the probability of failures. Some air-conditioned passenger cars are not in place in accordance with regulations and standards when they are newly built and repaired, leaving a hidden fire hazard. First of all, through analysis of the causes of air-conditioned passenger car fires and fire insurance cases that have occurred throughout the road in recent years, it is found that there are many problems such as electrical equipment failures and poor insulation of air-conditioned passenger cars due to low quality of new construction and factory repairs, and they are extremely harmful. Specifically, the laying of electrical lines did not meet the requirements of the Ministry of Railways “Railway Passenger Car Wiring Rules”. Some newly-built air-conditioned passenger cars have problems such as insufficient tightening of wire joints, different circuits on the top of the passenger car, and wires of different voltage levels are bundled together, and no protective wire sleeves are added, and the power line length margin is too large.

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