FIELD: mechanics.
SUBSTANCE: multifunction tool comprises a shank end made with parallel side planes or of cone shape and a unit consisting of three parts including a detachable counterboring head, a cutting part to make threading and a boring part which are set sequentially one after the other; length of each part is defined as per the given relation. The relation depends on the nominal screw diametre. The method involves boring a hole for a screw, threading and reaming the hole for the countersunk screw head during one pass by the said multifunction tool.
EFFECT: increased processing efficiency.
2 cl, 1 dwg
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RU2307961C1 |
| SPRING-TOOTH HARROW | 2008 |
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| PORTABLE DRILL | 2007 |
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RU2358842C1 |
| 0 |
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SU352757A1 | |
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SU1166966A1 |
| METHOD OF MACHINING SHAPED WORKPIECE AND COMPOSITE TOOL FOR ITS REALIZATION | 1991 |
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RU2005579C1 |
| KNIFE | 2004 |
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RU2269409C1 |
| ANALYSER OF GRAIN MIXTURES | 2008 |
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RU2374008C1 |
