Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation

A technology of structural deformation and process structure, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as reducing processing efficiency, increasing the difficulty and difficulty of machining, reducing development costs and eliminating structural deformation. , the effect of reducing difficulty

Inactive Publication Date: 2009-07-29
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This brings great difficulties to the subsequent finishing of the whole shaft, seriously increases the difficulty of machining, and reduces the machining efficiency. At present, it usually takes more than 15 days to process a marine crankshaft

Method used

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  • Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation
  • Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation
  • Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation

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Experimental program
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Embodiment

[0046] The design formula of the interference δ of the red sleeve is:

[0047] δ = 1 2 [ b ( c 2 - a 2 ) ( c 2 - b 2 ) ( b 2 - a 2 ) · Torque π ...

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Abstract

The invention belongs to the field of machinery manufacturing, in particular to a method for the research of the structural deformation in the process of marine crankshaft hot jacket as well as measures of deformation prevention, which are suitable for the design and the manufacturing process of a large-scale marine crankshaft hot jacket. The invention adopts the computer simulation technology to research the structural deformation rules of the process of the crankshaft part hot jacket under the traditional processing, and then quantitatively provides the method for preventing the structural deformation of the marine crankshaft hot jacket according to the structural deformation rules of the crankshaft part under the traditional processing. The method can quantitatively research the structural deformation rules of the process of the crankshaft hot jacket, and can avoid the deformation according to the preventive measures. The marine crankshaft obtained in the hot jacket way by the preventive measures can obviously reduce (even eliminate) the structural deformation caused by asymmetric geometry around the hot jacket holes, reduces reserved processing allowance during the rough machining of the parts and the difficulty of follow-up cold working, and shortens the production cycle of the crankshaft.

Description

technical field [0001] The invention belongs to the field of machinery manufacturing, specifically a method for studying structural deformation of a marine crankshaft red sleeve and a measure for preventing deformation, which is suitable for the design and manufacturing process of a large marine crankshaft red sleeve. Background technique [0002] Large-scale semi-combined marine crankshaft is one of the core components of low-speed high-horsepower diesel engines, and is the "heart" of large ships. The semi-combined crankshaft is composed of crankshaft, main journal, thrust shaft and flange shaft. The crankshaft manufacturing process mainly includes vacuum smelting, vacuum casting, forging, heat treatment, rough machining, red sleeve and complete shaft finishing. The most critical aspects of these processes are how to make forgings with good metallurgical quality and how to connect various parts such as bellcranks and spindles together. In the actual process, after the rou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 孙明月陆善平李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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