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A method for removing grinding burrs on crankshaft journal edge and shoulder surface

A technology for crankshaft journals and shoulders is applied in the field of grinding burrs on the edges of crankshaft journals and shoulder surfaces, which can solve problems such as incomplete deburring, and achieve low cost, good effect and the effect of reducing grinding burrs.

Active Publication Date: 2021-03-19
桂林福达曲轴有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of incomplete deburring in the prior art, and to provide a method for removing the grinding burrs on the crankshaft journal edge and shoulder surface by using the mechanism of burr production and retention

Method used

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  • A method for removing grinding burrs on crankshaft journal edge and shoulder surface
  • A method for removing grinding burrs on crankshaft journal edge and shoulder surface
  • A method for removing grinding burrs on crankshaft journal edge and shoulder surface

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Embodiment

[0027] A method of removing the edge of the crankshaft neck and the shoulder grinding burr, the crankshaft processing is carried out according to the normal machining process.

[0028] The method includes the following steps:

[0029] 1) In the secondary rod of the main axis and the sinking tank, the cenon lathe is taken with the edge of the main shaft neck and shoulder and shoulder, and the chamfered direction is inclined with the shoulder grinding surface. The angular angle is 25 ° -30 °, the chamfer width is 0.07-0.15mm than the grinding margin, such as image 3 As shown, the chamfer speed is 900-1300r / min, the feed amount is 0.06-0.15mm / r, the roughness is Ra0.8-Ra1.0μm, the processing margin reserved for the shoulder is 0.12-0.30mm, shoulder The surface roughness is Ra1.0-Ra 1.6 μm;

[0030] 2) In the case of the main axial neck and the sinking tank process, the cenquetal neck sink is taken on the edge of the spindle neck, and the chamfer direction is inclined with the jo...

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Abstract

The invention discloses a method for removing grinding burrs of a crankshaft journal edge and a shoulder side. The method is characterized by comprising the following steps that firstly, edges at theintersecting position of a main journal shoulder fillet and the shoulder side are chamfered; secondly, edges at the intersecting position of a main journal under cut groove fillet and a journal surface are chamfered; thirdly, edges on the intersecting position of a connecting rod neck under cut groove fillet and the journal surface are chamfered; fourthly, end faces of journals on the front and back ends of a crankshaft are chamfered; fifthly, the end faces of the journals on the front and back ends of the crankshaft are machined into dual chamfering structures; sixthly, main journals and connecting rod necks are ground; and seventhly, the shoulder side is ground. The method is simple and practical in process, low in cost, good in effect, easy to popularize, and capable of effectively reducing the grinding burrs on the edge of journals of various crankshafts.

Description

Technical field [0001] The present invention relates to a mechanical processing technique, and is specifically a method of removing the edge of the crankshaft neck and a shoulder grinding burr. Background technique [0002] The glitch problem is that the metal processing industry is one of the difficult problems that is difficult to solve so far. The so-called burrs are mainly a plastic deformation of the part machining surface material and a redundant iron filing produced by the edge of the processing material. Burning is classified by cutting, which can be divided into two categories of cutting directional burrs and feed steering, crankshaft axial corrugated grinding burr belongs to the feed directional burr. [0003] The crankshaft is one of the core parts in the engine. After the crank journal passes through the grinding trough of the edge of the journal, some filament burrs are adhered to the end surface chamfer, and some filamentous burrs are adhesive. These bulbs are the j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00B24B9/00B24B19/00
CPCB24B1/00B24B9/00B24B19/00
Inventor 黄学文夏志成彭旺生李成
Owner 桂林福达曲轴有限公司
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