Unlock instant, AI-driven research and patent intelligence for your innovation.

Diesel engine crank machining process

A diesel engine and processing technology, which is applied in the direction of engine components, mechanical equipment, etc., can solve the problems of discontinuous grain fibers and weakened crank strength, etc.

Inactive Publication Date: 2015-08-12
韦守记
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is a big defect in the cranks currently used and produced by die forging, that is, the essential grain fibers at the fillet of the crank are discontinuous, thus weakening the strength of the crank, and the fillet is the place that bears the greatest mechanical stress place

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Below in conjunction with the examples, the specific implementation of the present invention will be further described in detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0015] A kind of diesel engine crank processing technology, comprises the following steps:

[0016] 1), the first fire: press the bar material, gnaw the bottom, upsetting and pulling out;

[0017] 2), the second fire: upsetting, elongation, number printing, number printing depth 120;

[0018] 3), the third fire: Use 120 degrees up and down V-shaped anvil to make a wrong turn, the wrong shift amount is 170, trim and straighten;

[0019] 4) Round the flange to the process size. After the size is in place, use a square to check the relative angle of each turn. Based on the middle turn, use a wrench to adjust the relative angle between each turn. Chamfer the edges of each turn and trim. Alignment, don...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a diesel engine crank machining process. The diesel engine crank machining process comprises the following steps of (1) annealing for the first time, i.e. pressing and clamping a handle rod material, gnawing the bottom, upsetting and drawing; (2) annealing for the second time, i.e. upsetting, drawing and marking, wherein the marking depth is 120; (3) annealing for the third time, using a 120-degree up and down V-shaped anvil to file a corner, wherein the shift is 170, finishing, and straightening; (4) rounding a flange until the flange reaches a processing dimension, after the dimension is satisfied, using an angle rule to check the relative angle of each corner, taking the middle corner as a reference, using a spanner to adjust the relative angle between every two corners, chamfering each corner ridge side, finishing, and straightening, thus the whole process is finished. According to the technical scheme provided by the invention, the machining process can be applied to cranks with different model numbers; each forging crank metal fiber is continuous and does not twist; a forged piece is good in quality, long in service life, low in investment on a tool auxiliary tool, high in additional value, and obvious in economic benefit, and can be applied to forging production of multiple cranks.

Description

technical field [0001] The invention belongs to the technical field of machining, in particular to a process for machining a diesel engine crank. Background technique [0002] The crank is an important part of the diesel engine. It is subjected to large and complicated forces during operation. At the same time, the crank is a high-speed rotating part, so the crank is required to have sufficient strength and rigidity. [0003] There is a big defect in the cranks currently used and produced by die forging, that is, the essential grain fibers at the fillet of the crank are discontinuous, thus weakening the strength of the crank, and the fillet is the place that bears the greatest mechanical stress place. Contents of the invention [0004] (1) Technical problems to be solved [0005] The technical problem to be solved by the present invention is: the purpose of the present invention is to provide a diesel engine crank processing technology. [0006] (2) Technical solu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21K3/00
CPCB23P15/00B21K3/00
Inventor 韦守记
Owner 韦守记