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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

Heat treatment process of plastic mold parts

Different types of steel are used as plastic molds, and their chemical composition and mechanical properties are different, so plastic cnc machining routes are different; similarly, different types of plastic mold steels use different heat treatment processes. This section mainly introduces the manufacturing process route and the characteristics of the heat treatment process of the plastic mold.

1. Explanation of heat treatment terms

1. Annealing
(1) Concept: The heat treatment process of heating steel to an appropriate temperature, keeping it for a certain period of time, and then slowly cooling (usually cooling with the furnace).
(2) Purpose:
a. Increase the hardness of low steel to increase its plasticity (to facilitate cutting);
b. Refine the grains, and even the structure and composition of the steel;
c. Eliminate residual internal stress in cnc laser plastic cutting steel to prevent deformation and cracking
(3) Classification: complete annealing; spheroidizing annealing; stress relief annealing
2. Normalizing
(1) Concept: The process method of heating steel to 30~500C above Ac3 or ACcm, holding it for an appropriate time, and cooling it in air.
(2) Purpose: It is basically the same as the purpose of annealing, but the normalizing cooling rate is slightly faster than annealing, so the pearlite structure obtained after normalizing is relatively fine, and the strength and hardness are higher than that of annealed steel.
Normalizing has a shorter production cycle than annealing and has low cost and easy operation. Therefore, normalizing is preferred under possible conditions, but annealing should be used for complex parts.
3. Quenching
(1) Concept: The heat treatment process of heating steel to a certain temperature above Ac3 or Ac1, holding it for a certain period of time, and then cooling at an appropriate speed to obtain martensite or bainite structure.
(2) Purpose: In order to obtain martensite, improve the strength and hardness of steel.
4. Tempering
(1) Concept: a heat treatment process in which the quenched steel is heated to a temperature below the Ac1 point, held for a certain period of time, and then cooled to room temperature.
(2) Purpose:
a. Eliminate internal stress;
b. Obtain the required mechanical properties (improve the toughness of the steel, appropriately adjust the strength and hardness of the steel);
c. Stable organization and size

2. Process route of cnc plastic moulding

1. Low-carbon steel and low-carbon alloy steel molds
For example, the process route of 20, 20Cr, 20CrMnTi and other steels is: blanking→forging die blank→annealing→mechanical rough machining→cold extrusion forming→recrystallization annealing→mechanical finishing→carburizing→quenching, tempering→grinding and polishing →Assemble.
2. High-alloy carburized steel mold
For example, the process route of 12CrNi3A and 12CrNi4A steel is: blanking→forging die blank→normalizing and high temperature tempering→mechanical rough machining→high temperature tempering→finishing→carburizing→quenching and tempering→grinding and polishing→assembly.
3. Quenched and tempered steel mold
For example, the process route of 45, 40Cr and other steels is: blanking→forging die blanks→annealing→mechanical rough machining→tempering and tempering→mechanical finishing→dressing, polishing→assembly.
4. Carbon tool steel and alloy tool steel molds
For example, the process route of T7A~T10A, CrWMn, 9SiCr and other steels is: blanking → forging into die blank → spheroidizing annealing → mechanical rough machining → stress relief annealing → mechanical semi-finishing → fine cnc machined parts → quenching, tempering → Grinding and polishing → assembly.
5. Pre-hardened steel mold
For example, 5NiSiCa, 3Cr2Mo (P20) and other steels. For those directly processed with bar stocks, they have been pre-hardened due to the supply status, and can be directly processed and formed, then polished and assembled. For those that need to be forged into blanks and then processed into forming, the process route is: blanking→forging→spheroidizing annealing→planing or milling six sides→pre-hardening treatment (34~42HRC)→mechanical roughing→stress relief annealing→ Mechanical finishing → polishing → assembly.

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