Cone and cone hole machining method

Abstract

The invention discloses a cone and cone hole machining method. The method comprises the steps that a taper rod and a taper sleeve which are same in taper are made, wherein the cone matching contact area reaches 95% or above; a first marking line is drawn on the portion, with the diameter equal to a standard diameter value of the big end of a preset propeller cone hole, of the taper rod, and a second marking line is drawn on the portion, with the diameter equal to the above-mentioned standard diameter, of the taper sleeve; a propeller cone hole and a screw shaft cone are made, wherein the length of the propeller cone hole is correspondingly smaller than the cone length of the taper rod, and the length of the screw shaft cone is correspondingly smaller than the cone hole length of the taper sleeve; and when the propeller cone hole and the screw shaft cone are machined, the taper rod and the taper sleeve are adopted for replacing the corresponding screw shaft cone and propeller cone hole to check the contact area of the taper rod and the propeller cone hole and the contact area of the taper sleeve and the screw shaft cone and the cone size. The invention provides an efficient propeller cone hole machining method. The method is high in machining precision, good in cone matching contact surface, easy to operate, good in interchangeability, capable of saving labor and low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of marine propellers and stern shafts, in particular to a method for processing cones and taper holes. Background technique [0002] At present, the traditional process route of propeller cone hole processing is as follows: firstly, use a lathe to roughly process the propeller cone hole, leaving a scraping allowance of 0.5mm in diameter, and then use a scraper or a small grinding wheel to manually grind the propeller shaft. Carry out the matching, and control the number of contact spots to achieve the control of the contact area. With the development of large-scale ships, the diameter and length of the propeller cone hole are getting larger and larger, and more and more keyless connections between the propeller cone hole and the propeller shaft are used, and there are higher requirements for the contact surface and roughness of the cone. . The traditional mating process has low efficiency and low quality, ...

AI Technical Summary

Problems solved by technology

The traditional mating process has low efficiency and low quality, and cannot fundamentally meet the requirements of contact area and roughness, and has poor interchangeability

At present, whenever a ship’s propeller is damaged and needs to be replaced, the stern shaft must be removed from the ship and transported to the scraping workshop for scraping and matching with the newly made propeller. This method has a large workload, a long cycle, and high maintenance costs, and urgently needs to be improved.

In summary, it is necessary to improve the manufacturing method of the propeller cone hole to solve the problems of complicated operation, low efficiency, high cost and poor interchangeability in the prior art

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