For friends who have been in contact with the radiator component industry, they often see or hear "CNC machining", but too much exposure does not necessarily mean that many people understand. In fact, many questions are still about CNC machining. What are the advantages? Let's take a closer look. CNC machining is an index-controlled machine tool machining, which is a method of using digital information to control the machining process. Traditional mechanical processing is done manually by machine tools. During processing, the mechanical cutter is shaken to cut metal, and the accuracy is measured with calipers and other tools. However, traditional artificial intelligence processing is far from being able to meet the needs of production development. Therefore, the emergence of CNC machining provides the possibility for the standardization, precision and efficiency of mechanical product processing. The CNC machining process in the radiator component industry also shines. The
Mold material The performance of the molding material should not only ensure the convenient production of investment molds with accurate dimensions and high surface finish, good strength and light weight, but also create conditions for the manufacture of mold shells and good castings. Molding materials are generally formulated with waxes, natural resins and plastics (synthetic resins). All mold materials mainly prepared with wax materials are called wax-based mold materials, and their melting point is low, 60~70 ° C; all mold materials mainly prepared with natural resins are called resin-based mold materials, with a slightly higher melting point, about 70 °C. ~120℃. invest-casting.com Precision Investment Castings China prototype company service include : High Quality Investment Casting Parts Custom , Lost Wax Investment Casting Sand Casting , Lost Foam Casting , Gravity Casting , Die Casting , Graphite Casting , Casting Moldsmanufacturers . Manufacture of Folding Investments In t
How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually
The amount of cutting greatly affects the durability of tools, such as work hardening, cutting force, and cutting heat in the machining stainless steel. Whether the selected cutting amount is appropriate has a direct effect on the cutting effect.
1. Cutting speed Vc:
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When machining stainless steel, the cutting speed is slightly increased, the cutting temperature is much higher, the tool wear is increased, and the durability is significantly reduced. To ensure reasonable tool durability, it is necessary to reduce the cutting speed, which is generally selected between 40% and 60% of normal carbon steel. When drilling or cutting, the cutting speed will be slower due to the rigidity of the tool, heat dissipation condition, cooling effect, lubrication effect, and chip removal condition.
Different types of stainless steel have different machinability and the cutting speed needs to be adjusted accordingly. Generally, austenitic stainless steels such as 1Cr18Ni9Ti have a cutting speed correction coefficient Kv of 1.0, a hardness of 2cr13 or less, and an HRC28 or less. The Kv of martensitic stainless steel is 1.3 to 1.5, and the Kv of martensitic stainless steel such as 2Cr13 having a hardness of 28 to 35 is 0.9 to 1.1. The Kv of martensitic stainless steel such as 2Cr13 having a hardness of HRC35 or higher is 0.7 to 0.8. The Kv of concentrated nitric acid resistant stainless steel is 0.6 to 0.7.
2. Cutting depth ap:
There is a lot of room for roughing, and you must choose a larger cutting depth to reduce the number of tool movements and at the same time avoid contact between the tip and the surface of the blank to reduce tool wear. However, if the depth of cut is deep, care must be taken not to vibrate due to excessive cutting force. The option is ap = 2-5 mm. Smaller cutting depths can be selected for finishing and hardened layers should be avoided. Generally, p = 0.2 to 0.5 mm is used.
3. Feed amount f:
The increase in feed rate is not limited by the power of the machine tool. In addition, the feed amount cannot be increased because the remaining cutting height and chip accumulation amount increase as the feed amount increases. To improve the quality of the machined surface, lower feed rates should be used for finishing. At the same time, note that f must not be less than 0.1 mm / r to avoid cutting in work-hardened areas, avoid trace feeds, and pay attention to the cutting edge so that it does not stay on the cutting edge. Should be. Cutting surface The cutting amount of machined stainless steel is shown in Tables 4 and 5.
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