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A Surface-Contact Propeller Cone Hole Matching Process

A technology of propeller and surface contact, which is applied in the field of "surface contact" propeller taper hole mating technology, can solve the problems that cannot fundamentally meet the requirements of contact surface and roughness, poor quality, and failure of press-fitting, etc., to achieve Improve the application effect, improve the surface roughness of the taper hole, and improve the processing efficiency

Inactive Publication Date: 2019-03-08
镇江中船瓦锡兰螺旋桨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of large-scale ships, the connection between the middle hole of the marine propeller and the stern shaft is mostly a keyless connection, the contact length and diameter of the middle hole are large, and it is a cone. Higher new requirements are put forward for the surface and roughness. At present, the propeller cone hole grinding method is also varied. Most of them follow the traditional scraper and small grinding wheel grinding head and use manual grinding. The principle is to control the number of contact spots. The control of the contact area cannot fundamentally meet the requirements of the contact surface and roughness, the efficiency is not high, the quality is not good, and even the press-fitting fails

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the technical solution of the present invention clearer, the present invention will be further described below in conjunction with examples.

[0018] A surface contact propeller cone hole matching process:

[0019] 1) Before hoisting the propeller to be processed, place stable wooden piles made of boxwood or with similar hardness in the front, rear, left and right directions of the propeller pit, and then hoist the propeller to be processed and place it on the stable wooden pile. An inclined wooden block with a fixed inclination angle of 30° to 45° is placed under the blade to stabilize the propeller to be processed. When hoisting the propeller, the position of the propeller cone hole is symmetrical to the center of the pit.

[0020] 2) Use a spirit level to measure the level of the paddle to be processed at the taper hole. If the level error of the paddle to be processed is greater than 0.3, adjust the position of the paddle to be processed, replace t...

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Abstract

The invention belongs to the technical field of propeller advanced manufacturing, and in particular relates to a face contacting type propeller bore-hole scrapping-fitting technology. The application of the scrapping-fitting technology can not only improve the processing efficiency of the propeller, but also can the surface roughness of the propeller bore-hole be improved greatly. According to the marine propeller machined with the scrapping-fitting technology, the face contact between the inner surface of a center hole and the outer surface of a shaft is realized very well rather than a propeller bore-hole 70% 'contact spot' type coordination machined with a traditional technology; the stability and the output power of the propeller are improved greatly, and the application effect of the propeller in practical application is improved essentially.

Description

technical field [0001] The invention belongs to the technical field of advanced manufacturing of propellers, in particular to a "surface-contact" propeller cone hole matching process. Background technique [0002] With the development of large-scale ships, the connection between the middle hole of the marine propeller and the stern shaft is mostly a keyless connection, the contact length and diameter of the middle hole are large, and it is a cone. Higher new requirements are put forward for the surface and roughness. At present, the propeller cone hole grinding method is also varied. Most of them follow the traditional scraper and small grinding wheel grinding head and use manual grinding. The principle is to control the number of contact spots. The control of the contact area cannot fundamentally meet the requirements of the contact surface and roughness, the efficiency is not high, the quality is not good, and even the press-fitting fails. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 胡传林孟凡晓王建华程晓卫
Owner 镇江中船瓦锡兰螺旋桨有限公司