The mirror grinding of hard alloy cutting tool

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  • source:MACKINNON CNC Machining
As industry of car engine, aerospace, mould treatment and project machine are mixed field of machining of nicety of other high end is right what character of cutting tool of integral hard alloy asks is ceaseless rise, promoted cutting tool of homebred whole hard alloy from inside production low end the product develops ceaselessly to application of contented high end. According to not complete count, size of market of tool of cutting of our country metal amounted to 33 billion RMB 2010, 20% what take global market about, already made the market with the biggest whole world. Among them, homebred cutting tool is 22 billion yuan about, entrance cutting tool is 11 billion yuan about. Importing cutting tool basically is high-end product completely, and product of the high end in homebred cutting tool is only 2 billion yuan, 10% what be less than gross of homebred cutting tool. Visible, market of tool of our country high end had 13 billion yuan about 2010, and homebred change rate only 15% is control. Since 2000, china begins large quantities of quantities to introduce abroad's advanced 5 axes, 6 number of axle to control tool grinding machine, although a lot of enterprises owned advanced facility, but in production of big however batch cheap cutting tool, created enormous resources waste. And the cutting tool that should manufacture high end, implement ideal change only, ability chooses to go up in manufacturing technology and emery wheel hold right way. Advanced and efficient cutting tool is one of main factors that improve treatment productivity and product surface quality. On center of high-grade CNC Machining, can use an efficient and compound cutting tool to replace cutting tool of many single function, complete the treatment of complex form workpiece automatically according to machine program, be helpful for increasing production quality of efficiency, surface and reduce manufacturing cost. In the meantime, use advanced and efficient cutting tool to still can reduce the time that change a knife, raise product quality to wait. When undertaking to efficient cutting tool grinding is machined, after should deciding appearance of cutting tool material, structure and grinder type selecting, emery wheel becomes a decision to machine the main factor of success or failure. The technical content of emery wheel and quality decided whether production gives the high quality cutting tool that accords with design requirement, accordingly, grinding machine of tool of numerical control of 5 axes, 6 axes coordinates high-end emery wheel and advanced numerical control use, ability achieves production to give the cause of high-end cutting tool. Why should realize the mirror grinding of cutting tool of integral hard alloy? Surface of hard alloy cutting tool reachs one of marks that lens side stage is high-end product, also can come true at the same time the following two effects: (1) make of point of cutting tool cutting dentate drop lowermost limit, those who increase cutting tool cutting is sharp degree, improve manufacturing efficiency thereby; (2) the generation that surface of hard alloy cutting tool achieves lens side stage to still can avoid to accumulate bits tumour, prolong cutting tool service life. Machine example: Whole of graver of 8 odd blade opens Φ groove: Use puissant open slot (METROX) emery wheel (1A1-D125-10T-10X-31.

75H, granuality D46, linear velocity 20m/s, feed speed 100 ~ 120mm/min) , TTS essence grinds emery wheel (1A1-D125-6T-10X-31.

75H, granuality D25, linear velocity 26m/s, feed speed 200 ~ 300mm/min) , K10 polish emery wheel (1A1-D125-6T-10X-31.

75H, granuality D5, linear velocity 30m/s, feed speed 10 ~ 20mm/min) , TTS kibble emery wheel (the first hind horn, 11V9-100D-3W-10X-31.

75H, granuality D46, linear velocity 24m/s, feed speed 200mm/min) , TTS essence grinds emery wheel (multiple hind horn, 11V9-100D-3W-10X-31.

75H, granuality D25, linear velocity 28m/s, feed speed 300mm/min) , K10 polish emery wheel (the first hind horn, 11V9-100D-3W-10X-31.

75H, granuality D5, linear velocity 30m/s, feed speed 10 ~ 20mm/min) . Carry the part after blade: Use TTS kibble emery wheel (the first hind horn, 11V9-100D-3W-10X-31.

75H, granuality D46, linear velocity 24m/s, feed speed 200mm/min) , TTS essence grinds emery wheel (the 2nd hind horn, 11V9-100D-3W-10X-31.

75H, granuality D25, linear velocity 28m/s, feed speed 300mm/min) , K10 polish emery wheel (the first hind horn, 11V9-100D-3W-10X-31.

75H, granuality D5, linear velocity 30m/s, feed speed 10 ~ 20mm/min) . Mix to emery wheel nap problem giving blade, should notice emery wheel nap (Truing) and give blade (Dressing) it is two completely different ideas. A blade of polishing emery wheel is very important, need deploys appropriative to give blade oilstone. Nap is removed (Truing Interval) the main basis that is wearability of judgement emery wheel, interval giving blade (Dressing Interval) it is judgement emery wheel is sharp spent main basis. To grinding and extruding treatment craft, need of surface of hard alloy cutting tool reachs lens face level through real grinding talent, extruding of and rather than is formed. What grinding can achieve right place to need is bright and clean degree; Extruding can get brightness only, very need avoids this. We are using puissant emery wheel opening slot (METROX) when should notice to choose: Granuality (diameter of basis good stuff and toothed size) , linear velocity (assure bright and clean degree) with feed speed (depend on deepness opening slot and total purify volume) . CNC Milling