A Limit Tooling for Bottom Hole Processing

Abstract

The invention discloses a bottom hole machining limiting tool, and belongs to the field of machining. The limiting tool comprises a clamping base, a limiting plate and two sliding blocks. The clampingbase comprises an upper semicircular base and a lower semicircular base, and the upper semicircular base and the lower semicircular base are detachably installed together so as to form a clamping space for containing an oil pipe. A first guiding hole is formed in the top of the upper semicircular base and communicates with the clamping space. Sliding grooves are formed in the two sides of the upper semicircular base. The two sliding grooves extend in the axial direction of the first guiding hole. One sliding block is inserted in one sliding groove in a sliding manner, and the other sliding block is inserted in the other sliding groove in a sliding manner. The side walls of the two sliding grooves are provided with lock screws. The lock screws are used for abutting against the corresponding sliding blocks. The limiting plate is fixedly clamped between the two sliding blocks and provided with a second guiding hole, and the second guiding hole and the first guiding hole are coaxially arranged. By means of the bottom hole machining limiting tool, the bottom hole depth can be controlled.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a position-limiting tool for processing bottom holes. Background technique [0002] In controllable pitch propellers, the oil pipe in the shaft is usually composed of multiple short sections of oil pipes, and the short sections of oil pipes are connected by threads. Since the oil pipe in the shaft is in a rotating state during work, in order to prevent the short joint oil pipes from loosening, it is usually necessary to insert a radial positioning pin axially at the joint of the two short joint oil pipes. [0003] When processing the bottom hole for inserting the radial positioning pin on the pipe wall of the short oil pipe, in order to ensure that the hole depth meets the design requirements, a mark is usually made on the drill bit. In the process of processing the bottom hole, as the drill bit penetrates into the pipe wall, when the mark is flush with the opening of the dr...

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Problems solved by technology

[0004] However, the above-mentioned control method for hole depth requires a high level of operation of workers. Once the drill bit does not stop in time because of not noticing the mark, the pipe wall will be drilled through and the oil pipe will be scrapped.

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