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莫斯科拖拉机农业机械制造工艺科学研究所科研-生产联合体研制了一种带有滚动导向器的多刀镗头已在一些企业中应用。刀具有切削部分1,带有键13的锥柄,与刀杆12连接用螺杆11。切削元件是菱形硬质合金刀片,用楔-压板系统牢固地固定。刀头的尺寸在机床外以普通夹具几分钟就可调整。菱形刀片利用特殊夹具整件刃磨。镗头的导向部分由几排标准滚珠5靠在锥套6及8中能沿轴向移动,键7限制其不回转,环4及3阻止其脱落.
Moscow tractor Agricultural Machinery Manufacturing Research Institute of Science and Technology - Production Consortium has developed a multi-knife with a rolling guide boring head has been used in some enterprises. The knife has a cutting part 1, a taper shank with a key 13, a screw 11 connected with the arbor 12. The cutting element is a diamond-shaped carbide blade that is securely fixed with a wedge-platen system. The size of the tool head can be adjusted with a few minutes outside of the machine. Diamond blades use a special fixture grinding the entire piece. The guide portion of the boring head is axially movable by the rows of standard balls 5 resting on the bushings 6 and 8, the key 7 restricting it from rotating and the rings 4 and 3 preventing it from falling off.