Cone and try to repair the mill grinding

changsha langfeng metallic material is a loyal manufacture of high speed twist drill bit.

Diamond pen on clamping jaw chuck, start grinding wheel infeed, longitudinal reciprocation feed mill repair cone, measured by the size of the inner cone big end diameter D control cone, completing the inner cone grinding wheel spindle runout oblique axis also are in line with national standards. After the grinding of twist angle, angle, chisel edge bevel, cutting edge beats working part of the diagonal axis are qualified. But there are not sharp and grinding wheel wear faster, low grinding efficiency, drill fever burns and other problems in the Big Easy grinding test.

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