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Railway vehicle in-built side-window sash rounded-corner forming process

A rail vehicle and fillet forming technology, which is applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problem of high machining cost and inability to adapt to the small batch, multi-variety and fast-paced problems of side window frames installed in rail vehicles Problems such as production methods and low material utilization rate have achieved the effect of fewer molds, good application prospects, and reduced mold numbers and costs.

Active Publication Date: 2014-06-04
NANJING KANGNI MECHANICAL & ELECTRICAL
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the traditional rail vehicle interior side window frame fillet forming process, which has low material utilization rate and high machining cost, and cannot adapt to the small batch, multi-variety and fast-paced production of rail vehicle interior side window frames. The problem of production method

Method used

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  • Railway vehicle in-built side-window sash rounded-corner forming process
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  • Railway vehicle in-built side-window sash rounded-corner forming process

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0029] The rounded corner forming process of the rail vehicle interior side window window frame of the present invention uses aluminum plate sheet metal parts to replace traditional machined parts, which is convenient for welding with side wall panels (sheet metal parts), and is replaced by the rolling plate flanging forming process The conventional stretch forming process greatly simplifies the process flow, such as figure 2 As shown, it specifically includes the following steps,

[0030] Step (1), prepare materials, expand the aluminum sheet metal parts to form an arc-shaped aluminum sheet, such as image 3 As shown, the thickness of the aluminum sheet is 3mm;

[0031] Step (2), coiling, c...

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Abstract

The invention discloses a railway vehicle in-built side-window frame rounded-corner forming process. The railway vehicle in-built side-window frame rounded-corner forming process only includes the steps of material preparing, plate rolling, flanging, trimming and linear cutting and slicing. The intermediate annealing process in conventional stretch forming is avoided, technology difficulty is greatly lowered, operability is high, fewer and simple dies are used, one die can be used not only as a flanging die but also as a vehicle fixture of the trimming process, the number of the dies is decreased, cost is lowered, and trial production circle of products is greatly shortened; by produced railway vehicle in-built side-window sash rounded parts, scratching brought by possible pulling cracks and stretching in the stretch forming process is avoided, the quality of forming surfaces and the like is high, utilization of materials is high and can reach 85% to 90%, production cost can be decreased by 88.35%, the forming process is suitable for the small batch, multi-product and fast-spaced production mode of rounded parts, and is good in application prospect.

Description

technical field [0001] The invention relates to a fillet molding process for a rail vehicle interior side window frame, and belongs to the technical field of rail vehicle components. Background technique [0002] With the rapid development of urban scale, rail transit can facilitate people's travel, so it has been vigorously developed, and the demand for rail vehicles is also increasing. The side wall panels in rail vehicle interior projects are important components of rail vehicles, such as figure 1 As shown, the bends of the side window sash parts used are rounded structures, and the demand for interior side window sash frames is large. Different types of rail vehicles require different shapes, and there are small batches, multiple varieties, and fast-paced production characteristics. , the traditional method of machining forming is adopted, that is, the method of round bar car forming and then wire cutting. This method has disadvantages such as low material utilization ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB21D28/02B21D37/10B23P15/00
Inventor 姜海峰张宇明
Owner NANJING KANGNI MECHANICAL & ELECTRICAL
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