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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

TI TPS65266RHBR

# TPS65266RHBR TI TPS65266RHBR New Switching Voltage Regulators 2.7Vto6.5V InputV3A 2A/2A Output Cur Syn , TPS65266RHBR pictures, TPS65266RHBR price, #TPS65266RHBR supplier ------------------------------------------------------------------- Email: [email protected] https://www.slw-ele.com/tps65266rhbr.html ------------------------------------------------------------------- Manufacturer: Texas Instrument s  Product Category: Switching Voltage Regulator s  RoHS:  Details   Mounting Style: SMD/SMT  Package / Case: VQFN -32  Output Voltage: Adjustable  Output Current: 2 A, 3 A  Number of Outputs: 3 Output  Input Voltage MAX: 6.5 V  Topology: Buck  Input Voltage MIN: 2.7 V  Switching Frequency : 1 MHz  Minimum Operating Temperature: - 40 C  Maxim um Operating Temperature: + 85 C  Series: TPS65266  Packaging: Cut Tape  Packaging: MouseReel  Packaging: Reel Switching Voltage Regulators 2.7Vto6.5V InputV3A 2A/2A Output Cur Syn

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

Several factors affecting the embrittlement of speed-regulated cooling fans

Several factors affecting the embrittlement of speed-regulated cooling fans

 

 The embrittlement of the speed-adjustable cooling fan means that it is easy to break. If the equipment frame or fan blade is broken, the fan is basically scrapped. It is prone to accidents when it is broken during work, and it has to be taken seriously. The embrittlement of the speed-regulated DC cooling fan is caused by the following factors: long-term operating temperature, fan speed ratio, power switching frequency, rotor dynamic balance of the fan motor rotor, fan structure direction and dust or dirt in the natural environment.

The brittleness of the speed-adjustable cooling fan means that it is easy to break. If the equipment frame or fan blade is broken, the fan is basically scrapped. It is prone to accidents when it is broken at work, and it has to be taken seriously. The embrittlement of the speed-regulated cooling fan is caused by the following factors: long-term operating temperature, fan speed ratio, power switching frequency, rotor dynamic balance of the fan motor rotor, fan structure direction and dust or dirt in the natural environment.

 

1. Working temperature: The temperature of the fan office environment will endanger the evaporation and viscosity of the grease, thus endangering the service life of the power cooling fan.

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2. Fan speed ratio: The AC coling fan speed ratio is inversely proportional to the service life. The higher the speed ratio, the higher the temperature caused by the friction of the grease liquid, which will accelerate the evaporation of the grease and reduce the service life of the bearing.

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3. Power switching frequency: When the oil bearing starts, no oil wedge is produced, and the shaft core and bearing are still in contact with metal materials, which will cause slight damage. Therefore, frequent power switching can also endanger bearing life.

 

4. The rotor dynamic balance of the fan motor rotor: the better the rotor dynamic balance of the fan Blower motor rotor, the smaller the centripetal force caused by the same speed ratio, the less damage to the bearing, and then the service life of the bearing will increase.

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5. Fan structure direction: Due to the difference in the fan structure field, the influence of force on the bearing will also be different. In the basic theory, the force of the motor rotor on the bearing has minimal ground stress when the direction of the deceived gravity is parallel to the bearing.

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6. Dust or dirt from the outside: After entering the bearing, the dust in the air will block the air intake system of the bearing, destroy the original dynamic pressure oil film and lubrication of the oil bearing, and cause failure. If the external dirt is chemical fibers or insects, it will also hinder the rotation of the centrifugal impeller.

 

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