PCD metal cutting tools can use PCD materials with high hardness, high wear resistance, high thermal conductivity, and low friction coefficient to achieve high precision, high efficiency, high stability, and high surface finish of non-ferrous metals and wear-resistant non-metallic materials. This kind of tool from the structure can be divided into welding PCD tool and indexable PCD blade.In recent years, PCD tools with standard shank have developed rapidly, such as PCD milling cutter with shank, PCD boring cutter, PCD reamer, etc. The tool shank types are mainly cylindrical shank, taper shank, and HSK shank. This kind of tool (especially the multi-tooth tool) is characterized by the cutting edge of the shank runout small (such as the blade length of 30mm HSK handle PCD milling cutter cutting edge runout is only 0.002mm), especially suitable for a variety of non-ferrous metal parts of the forming surface, hole, step hole and other large quantities of high-speed processing. For example, the PCD high-speed milling cutter with aluminum matrix cutter head (six edges, diameter 100mm), the maximum speed can reach 20,000R/MIN, above, the cutting speed can reach 7,000M/MIN, suitable for forming surface processing of automotive parts.The indexable PCD blade is made by inlaying a PCD knife blank on the indexable carbide blade and then grinding it. It can be clamped on the cutter bar, cutter holder, or cutter head of various CNC machine tools and used for high-reliability mass processing. With the increasing popularity of CNC machine tools, machining centers, and automatic production lines, the use of indexable PCD blades is more and more, and the tool’s durability can be improved dozens of times compared with carbide tools.(2) PCD woodworking toolsPCD woodworking tools can be divided into PCD saw blades and PCD shaped woodworking milling cutter two categories.PCD saw blade is to weld the PCD blade blank on the saw blade matrix and then warpThe structure of the PCD saw blade is similar to that of the carbide saw blade after grinding. The difference is that the front Angle of the PCD saw blade is smaller than that of the carbide saw blade, generally, 5° ~ 10°, wedge Angle 65° ~ 75°, the size of the saw blade is generally from 100 to 450mm, and the number of sawteeth can be up to 72 teeth.The main varieties of PCD forming woodworking milling cutter are used for processing Al2O3 layer of laminated wood floor trimming knife, PCD groove knife, PCD furniture forming knife, etc. Its processing method is the shape of PCD cutting tool one-time copy (or combination) to be processed wood. The cutting speed of PCD forming woodworking milling cutter can reach 3,000m/min, and the cutting volume can reach several meters per minute. The cutter’s durability is dozens or even hundreds of times that of carbide cutting tools. Because of its high efficiency and high durability, it is especially suitable for mass processing.

PCBN metal cutting tools can also be divided into welding PCBN tools and indexable PCBN blade two categories.Welding type PCBN tool is the PCBN insert blank welded on the steel matrix by grinding, mainly turning tool, boring tool, reamer, and so on. PCBN tools are mostly used for wear-resistant ferrous metal processing, so the tool Angle can not be too small, the tool rectangle is generally -5° ~ 5°, the back Angle is generally 3° ~ 10°, intermittent cutting is generally negative chamfering.PCBN insert of transposition structure (mainly for the lathe tool and milling tool) is generally in a corner of the transposition cemented carbide blade inset welding a PCBN insert blank, by grinding. In consideration of the more expensive and regrinding knife blank and other reasons, generally only made of a knife tip. With the improvement of welding process quality, the shear strength can reach 0.78kg/m². With the PCBN insert blank size smaller and smaller, not regrinding PCBN blade price also decreases. Because PCBN tools have high wear resistance and long life, it is also ground for many times, many customers like to choose PCBN metal cutting tools for product processing.It needs a tool grinding machine for grinding PCBN inserts. Beijing Demina PCBN tool grinding machine can grind and regrind PCBN cutting tools with high efficiency.

Grinding Procedures Of BT-150N Tool GrinderAt first, set the grinding wheel inclination as the second clearance angle (normally from 0°to 18°), and turn the rotary table at a proper position so that the left cutting edge parallel to the X-axis of the hairline on the video displayer. That is the cutting edge parallel to the grinding wheel end face. Turn the fast feed handwheel to move the tool immediately in front of the grinding wheel end face, and then feed forward with figures screwing the micro feed wheel. The grinding wheel is removing the PCD&CBN material until you stop. Try it one or more times until the new cutting edge appears. Do the same to the second cutting edge.Secondly, center the tooltips again by turning the two handwheels on the cross worktable. Drive the grinding wheel quickly forward until the PCD&CBN tool is near to the grinding wheel, and then feed ahead while swinging the rotary table. Radius cutting tip is forming gradually. As soon as the radius cutting edge coincides with the two linear cutting edges stop the feeding. Finally, set the grinding wheel inclination as the first clearance angle (normally from 5 ° to 8 ° ), do the same to the tools so that a very narrow flat (roughly 0.02mm thickness) comes into being on the cutting edge. The way described above is a normal method, and a special and more reasonable method is highly encouraged and reported to Demina precision. Special fixture design and even emendation to the machine will be considered by Demina as innovation.

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