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Straightening method and device for thick shaft like parts

A straightening and thick shaft technology, which is applied in hot straightening and cold fields, can solve the problems of complex straightening process, low production efficiency, large straightening deformation and rebound, etc., achieve high straightening efficiency, reduce equipment cost, Reduce the effect of rebound

Inactive Publication Date: 2015-04-01
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire straightening process is complicated, the production efficiency is low, and the straightening deformation and springback are large

Method used

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  • Straightening method and device for thick shaft like parts
  • Straightening method and device for thick shaft like parts
  • Straightening method and device for thick shaft like parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] exist figure 1 , image 3 and Figure 6 , Figure 7In the schematic cross-sectional front view of a straightening device for thick shaft parts shown, the frame mainly includes a base 1 , a bracket 14 , and a guide rail 2 . The base is fixed on the ground through anchor bolts, the guide rails are laid on both sides of the upper surface of the base, the brackets on both sides are installed on the base through the guide rails, and the brackets on both sides are connected with the clamping mechanism. The clamping mechanism mainly includes an annular oil cylinder 3, a chuck 5 and a movable wedge 4, which are respectively fixed on the two side supports on the guide rail. The chuck is a cylinder with a cavity inside, and a tapered through hole corresponding to the guide rail is provided on the cylinder, and the small diameter holes of the two chucks are installed opposite to each other, and the outer surface of the two chucks is axially opposite. Lugs. In the tapered cavi...

Embodiment 2

[0030] Take a certain train axle as an example in conjunction with the accompanying drawings for detailed description: please refer to figure 1 , figure 2 , according to the specifications of the train shaft 8 to be straightened, select the movable wedge 4 corresponding to the train shaft shaft head and the shaft seat and the split anti-bending straightening mold 7 with the same diameter as the shaft body; adjust the expansion and contraction of the hydraulic cylinder A 6 , so that the moving distance of the chuck 5 meets the length requirements of the train axle 8 . Open the hydraulic cylinder A 6 to promote the chuck 5, the annular oil cylinder 3, the movable wedge 4 and the hydraulic top 9, the rotating mechanism 10 and the spring 11 etc. which are positioned in the annular oil cylinder to move to both sides on the base 1 along the guide rail 2; 8 is sent between the left and right chucks of the straightening equipment described in the present invention through the feedin...

Embodiment 3

[0034] see Figure 6 , Figure 7 , taking a polished rod shaft as an example, according to the specifications of the polished rod shaft to be straightened, select the movable wedge 4 with the same diameter as the clamping end of the polished rod shaft and the split-flap reverse bending straightening mold 7 with the same diameter as the shaft body; adjust the hydraulic cylinder A The expansion and contraction amount of 6 makes the moving distance of chuck 5 meet the length needs of the shaft. After the adjustment, the straightening method of the polished rod shaft is the same as the straightening method of the train shaft in embodiment 2, please refer to embodiment 2.

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Abstract

The invention provides straightening method and device for thick shaft like parts. The method is mainly applied to the straightening of the thick shaft like part; a clamping head is used for applying an axial loading force on a straightened shaft; the bent and deformed clamped end is straightened during clamping by the clamping head; under the effect of the axial loading force, a hydraulic cylinder is used for applying a straightening loading force for a sectioning reverse bending straightening die, so as to straighten the bent and deformed shaft body under the effects of the axial loading force and the straightening loading force. According to the method, the tensile reverse bending straightening method and device are adopted, the resilience value after straightening from bending is decreased, the force for reverse bending straightening is lowered down, straightening device bending detecting system and straightening displacement analyzing calculating control system are decreased, and a plurality of bent and deformed shaft bodies can be straightened at a time; the process is simple, and the straightening efficiency is high; the method and device are suitable for cold and hot straightening processes of steps and polish rod thick shafts like parts such as a train shaft and a car transmission shaft.

Description

technical field [0001] The invention relates to a method and equipment for straightening thick shaft parts after forging or heat treatment, especially for cold and hot straightening methods and equipment for thick shaft parts such as train shafts and automobile drive shafts and polished rods. Background technique [0002] The shaft is an important mechanical part that supports other rotating parts and transmits torque. Its manufacturing precision directly affects the stability of mechanical movement. Shaft parts will be bent and deformed after forging and heat treatment, and the bending and deformation will lead to a large amount of subsequent processing and waste materials. In order to reduce the bending deformation of shaft parts after forging and heat treatment, a straightening process is usually added. The commonly used straightening processes according to the material and deformation characteristics include extension method, stretching method and three-point bending m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/10B21D37/10
CPCB21D3/10B21D3/16
Inventor 赵长财贾向东
Owner YANSHAN UNIV
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