Adjustable-depth counter boring device

Abstract

The invention discloses an adjustable-depth counter boring device, which comprises a counter boring drill bit, a cutter bar and an adjusting mechanism, wherein the adjusting mechanism comprises a face tooth nut, a big spacer bush, a bearing, a small spacer bush, a face tooth sliding bush, a fixed-depth sliding bush, a spring, a fixed guide bush, a fastening screen and a retaining screw, where the baring and the big spacer bush are arranged in turn; the bearing and the fixed guide bush of the small spacer bush are sleeved in the fixed-depth sliding bush; the retaining screw is screwed in the left end of the sliding groove of the fixed guide bush; the spring, the face tooth sliding bush and the face tooth nut are sleeved around the fixed guide bush; the left end face of the spring is contact with an annular end face in the fixed guide bush, the right end face of the spring is contacted with the left end face of the face tooth sliding bush, the right end face of the face tooth sliding bush and the left end face of the face tooth nut are in meshed connection, and the face tooth nut is also connected with the right end of the fixed guide bush by threads; and the fastening screw is filled in the radial threaded through hole of the fixed-depth sliding bush, and two bearing inner rings with the same structure in the adjusting mechanism are in transition fit and connection with the cutter bar.

Description

technical field [0001] The invention relates to a tool for machining round holes, more specifically, it relates to a countersinking tool with adjustable depth. Background technique [0002] Countersink refers to the processing method of machining cylindrical countersink and tapered countersink on the processed hole. With the improvement of product quality, the requirements for the depth tolerance of countersink holes are generally increased. In manufacturing industries such as mechanical mold hardware, the processed metal parts are connected by screws and rivets, so there are many large and small holes drilled on the metal parts, and the holes processed by the drill on the drilling machine are all There are burrs and flashes. In order to meet the requirements of the assembly process, these holes with burrs and burrs must be countersinked and chamfered. However, the drilling and countersinking of large parts mostly use electric tools and pneumatic tools. The required drilli...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problems of inconvenient operation and relatively high difficulty in manufacturing and processing existing in the prior art, and provide a method with more convenient operation, greatly simplified technological process, reduced manufacturing and processing difficulty and energy Better realization of fast and accurate adjustment of the depth of countersinking adjustable depth countersinking tool

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