Partial Chamfering
There are a variety of different effects to be used in the sides of the part. The method described here can make the molding of the parts easier. In a case in actual processing, the CNC programmer faces the problem of low efficiency when completing the following chamfer processing. The task is 0.1 inches in the periphery of a part and the middle cavity chamfer. Customers are waiting for the parts to be completed, they will often go to the machining site. The machining progress of the chamfering process is indeed very slow, making customers dissatisfied. The programmer is accelerated by 3D chamfer processing methods. The cutting parameters used in the processing are as follows: the speed of 7000 rpm, feed 100 inch / min, and 0.002 inches. The time required to complete the chamfering process is 29 minutes. The problem with the cutting scheme is too small, and the steps are set in the G code and cannot be adjusted on the machine. If the cutting parameters are increased as follows: The speed is 10,000 rpm, the feed is 300 inches / minute, the step distance is 0.006 inches, and the process time can be shortened to 3.8 minutes. 3D method machining fillet. The rounded cutter can be used, but the installation and adjustment of the rounded tool is more complicated. Therefore, it is more preferred to use a ball-making milling cutter to process a soft material such as aluminum, rounded milling cutter to process steel material. With this 3D processing method, the computer has almost no adjustment of all considerations. Rounded milling cutters The cutting edge of the ball milling cutter is shorter, and its cutting force is smaller. Due to it is easy to process chamfer and round circles in CAD software, design engineers usually add chamfer and round circles to the entity model, so that the parts look more beautiful. However, most of them did not realize that the actual cutting rounded corners and chamfer are very much simpler as the corners and rounds. There is no uniform chamfer in the inner garden. This happens is that the Z-to-height setting of the chamfer knife is incorrect. It is easier to work with the ball-head milling cutter and 3D method processing holes. Since the cutting tool of the chamfer knife is not good, if the programming is intermediate cutting, a burr is generated. This is because the tip part is not enough, and the theoretical cutting line speed of the knife tip is 0. In addition, the knife pointer is not sharp. To make the chamfer knife cut tidy without burr, the knife tip needs to be offset to cut the contour. In the new version of CAM software, the chamfering knife can be biased to cut out neat contours. When a chamfering knife is biased, the depth of the tool is correct. If it is incorrect, uneven chamfer will be cut at the inner circular plane. Although this problem can be solved by the prior planning plan, it is necessary to consider too much when the chamfering process is attributed to unimportant feature processing, allowing the computer to solve the problem. For most chamfer, a ball head and rounded milling cutter can be used and 3D programmed cutting methods can be used. In this way, the computer can complete all considerations without worrying about burrs, bias tools or uneven matches. As long as it considers the chamfer milling cutter, the tool diameter is less than the inner diameter of the minimum. The deficiency of this method is that it is necessary to complete the entire chamfer cutting, the machining time is longer. Therefore, whenever possible, cutting amount is usually increased to improve processing efficiency.
There are a variety of different effects to be used in the sides of the part. The method described here can make the molding of the parts easier. In a case in actual processing, the CNC programmer faces the problem of low efficiency when completing the following chamfer processing. The task is 0.1 inches in the periphery of a part and the middle cavity chamfer. Customers are waiting for the parts to be completed, they will often go to the machining site. The machining progress of the chamfering process is indeed very slow, making customers dissatisfied. The programmer is accelerated by 3D chamfer processing methods. The cutting parameters used in the processing are as follows: the speed of 7000 rpm, feed 100 inch / min, and 0.002 inches. The time required to complete the chamfering process is 29 minutes. The problem with the cutting scheme is too small, and the steps are set in the G code and cannot be adjusted on the machine. If the cutting parameters are increased as follows: The speed is 10,000 rpm, the feed is 300 inches / minute, the step distance is 0.006 inches, and the process time can be shortened to 3.8 minutes. 3D method machining fillet. The rounded cutter can be used, but the installation and adjustment of the rounded tool is more complicated. Therefore, it is more preferred to use a ball-making milling cutter to process a soft material such as aluminum, rounded milling cutter to process steel material. With this 3D processing method, the computer has almost no adjustment of all considerations. Rounded milling cutters The cutting edge of the ball milling cutter is shorter, and its cutting force is smaller. Due to it is easy to process chamfer and round circles in CAD software, design engineers usually add chamfer and round circles to the entity model, so that the parts look more beautiful. However, most of them did not realize that the actual cutting rounded corners and chamfer are very much simpler as the corners and rounds. There is no uniform chamfer in the inner garden. This happens is that the Z-to-height setting of the chamfer knife is incorrect. It is easier to work with the ball-head milling cutter and 3D method processing holes. Since the cutting tool of the chamfer knife is not good, if the programming is intermediate cutting, a burr is generated. This is because the tip part is not enough, and the theoretical cutting line speed of the knife tip is 0. In addition, the knife pointer is not sharp. To make the chamfer knife cut tidy without burr, the knife tip needs to be offset to cut the contour. In the new version of CAM software, the chamfering knife can be biased to cut out neat contours. When a chamfering knife is biased, the depth of the tool is correct. If it is incorrect, uneven chamfer will be cut at the inner circular plane. Although this problem can be solved by the prior planning plan, it is necessary to consider too much when the chamfering process is attributed to unimportant feature processing, allowing the computer to solve the problem. For most chamfer, a ball head and rounded milling cutter can be used and 3D programmed cutting methods can be used. In this way, the computer can complete all considerations without worrying about burrs, bias tools or uneven matches. As long as it considers the chamfer milling cutter, the tool diameter is less than the inner diameter of the minimum. The deficiency of this method is that it is necessary to complete the entire chamfer cutting, the machining time is longer. Therefore, whenever possible, cutting amount is usually increased to improve processing efficiency.
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What Is The Difference Between Cemented Carbide and Tungsten Steel
Tungsten steel: alloy steel containing about 18% tungsten in the finished product. Tungsten steel is classified as cemented carbide, also known as tungsten-titanium alloy. The hardness is Vickers 10K, second only to diamond. Positive cause In this way, tungsten steel products (the most common are tungsten steel watches) have the characteristics of not being easily worn out. Commonly used in lathe tools, impact drill bits, glass cutter bits, The tile cutter is strong and not afraid of annealing, but it is brittle. Cemented carbide: attributed to the field of powder metallurgy, cemented carbide, also known as cermet, is based on metal carbides (WC, TaC, TiC, NbC, etc.) or metal oxides (Such as Al2O3, ZrO2, etc.) as the main ingredient, with an appropriate amount of metal powder (Co, Cr, Mo, Ni, Fe, etc.) made by powder metallurgy, with Ceramics with certain characteristics of metals. Cobalt (Co) is used to have a bonding effect in the alloy, that is, during the sintering process, it can remove tungsten carbide (WC) The powder is surrounded and tightly bonded together, and after cooling, it becomes a cemented carbide. (The effect is equivalent to cement in concrete). Content usually: 3--30% Tungsten carbide (WC) is the primary component that determines the properties of certain metals in this cemented carbide or cermet, accounting for 70---97% of the total composition (weight ratio). It is widely used Wear-resistant, high-temperature-resistant, corrosion-resistant, harsh working environment parts or cutters, tools on the cutter head. Tungsten steel is classified as cemented carbide, but cemented carbide is not necessarily tungsten steel. Nowadays, customers in Taiwan and Southeast Asian countries like to use the term tungsten steel. If you go into the details, you will find that most of them still refer to cemented carbide. The difference between tungsten steel and cemented carbide is: also known as high-speed steel or tool steel, tungsten steel is made by using steelmaking technology to join tungsten iron as tungsten material in molten steel. Also known as high-speed steel or tool steel, its tungsten content is usually 15-25%; while cemented carbide is made of powder metallurgy technology with tungsten carbide as the main body and cobalt or other bonding metals Sintered together, its tungsten content is usually more than 80%. Simply put, everything with a hardness exceeding HRC65 can be called a cemented carbide as long as it is an alloy. Tungsten steel is just a kind of cemented carbide with a hardness between HRC85 and 92, which is often used to make knives.
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Hard Alloy Mechanical Properties
The cemented carbide as an industrial teeth is a hard phase with a carbon such as one or more difficult metals (WC, Tic, etc.), using a transition metal (CO, etc.) as a bonding phase, and the production of powder metallurgical technology is produced. Multiphase material. As a cutting carbide tool use, common carbides are WC, TiC, Tac, NBC, etc., commonly used bonding phase, CO, Ni, Fe, etc. The strength of the hard alloy is mainly dependent on the bonding phase. The content. The hard alloy has the advantages of high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, linear expansion coefficient, and is widely used in numerous industrial production and processing operations. One of the excellent tool materials.
2021-11-24
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