Tapered drilling cutter capable of rotating

Abstract

The invention discloses a tapered drilling cutter capable of rotating. The tapered drilling cutter capable of rotating comprises a cutter body and cutter blades. The cutter body comprises a cutter rod, wherein two tapered rotary parts arranged side by side are arranged at the front end of the cutter rod. The cutter blades comprise two first cutter blades used for drilling and a plurality of second cutter blades used for hole broadening, wherein the two first cutter blades are located at the top ends of the two rotary parts respectively, and the multiple second cutter blades are divided into two sets which are arranged on the lateral edges of the two rotary parts in a staggered mode. The tapered drilling cutter capable of rotating integrates drilling and hole broadening and is high in machining efficiency, and the surface quality of the wall of a machined hole is good.

Description

technical field [0001] The invention relates to a tool for machinery, especially an indexable taper drilling tool, which is mainly used for holes requiring countersinking and taper on large workpieces such as steam turbine cylinder blocks, railway rails, and large steel mills. Sampling of large castings and forgings, etc. Background technique [0002] At present, on the plane of large castings and forgings, it is impossible to directly use one tool at a time to process the tapered hole. The main way to process taper holes on the surface is to use a drill bit to sink the hole on the plane, and then use a reamer to expand the taper hole. This method is troublesome and the processing efficiency is low, resulting in low production efficiency. There may be It is also difficult to satisfy the appearance of the knife mark; there is also a forming knife to realize the processing of the taper hole, but the processing cost of this processing method is high, and if the operation is no...

AI Technical Summary

Problems solved by technology

[0002] At present, on the plane of large castings and forgings, it is impossible to use one tool directly to process taper holes.

The main way to process taper holes on the surface is to use a drill bit to sink the hole on the plane, and then use a reamer to expand the taper hole. This method is troublesome and the processing efficiency is low, resulting in low production efficiency. There may be It is also difficult to satisfy the appearance of the knife mark; there is also a forming knife to realize the processing of the taper hole, but the processing cost of this processing method is high, and if the operation is not careful, it may cause the workpiece to be damaged. Scrapping and damage to the tool itself. Although this type of operation is convenient, the cost of the tool is high and the waste is relatively high. The processing efficiency is not high, and it is difficult to meet the current processing requirements.

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