Method for processing welding frame device using bolt, pun bush as positioning reference

A positioning datum, machining technology, applied in welding equipment, auxiliary welding equipment, metal processing equipment, etc., to achieve the effect of reducing the difficulty of operation, high work efficiency, and simplifying the production process

Active Publication Date: 2014-02-12
CRRC NANJING PUZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of existing welding frame machining and provide a welding structure

Method used

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  • Method for processing welding frame device using bolt, pun bush as positioning reference
  • Method for processing welding frame device using bolt, pun bush as positioning reference
  • Method for processing welding frame device using bolt, pun bush as positioning reference

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Embodiment Construction

[0011] The method of the present invention will be further described in detail with reference to the accompanying drawings and embodiments. However, the invention is not limited to the examples given.

[0012] After the frame is balanced on the special tooling before machining, the space size of each welded part is checked, and at the same time, each processing surface needs to have a machining allowance, and the three-dimensional space position of the frame is determined on this basis.

[0013] Such as figure 1 and figure 2 As shown, embodiment 1 is a schematic diagram of pin sleeve positioning on the AM96 frame as a positioning reference. The welding frame is machined according to the aforementioned 5 steps, and 4 pin sleeves X1, X1, X2, Y1, Y2, each direction has two pin sleeves parallel to each other and perpendicular to the other direction. On the tooling, there is a pin shaft that matches the pin sleeve. Use an edge finder to measure the central axis of the pin shaft...

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Abstract

Disclosed is a benchmark positioning method of a welding framework machine, which adopts a bolt and a pin bush, comprising the follow steps: (1) analyzing the structural characteristics of the work piece to be processed and determining the positioning type in the benchmark positioning which uses the bolt or the pin bush; (2) setting the benchmark positioning dimension of the bolt or the pin bush; (3) welding a work piece on the fixture of a balance table as the benchmark positioning bolt or pin bush; (4) reversely processing the work piece according to the positioning benchmark of the bolt or the pin bush at the processing centre; (5) pro processing the plane or the hole of the work piece processed by the reverse-processing, and then completing the processing of the welding framework machine. The invention has simple processing procedures and fixture, greatly simplifies the processing and correction difficulties, reduces the skill requirements of the workers, avoids the man-made factors which impacts the product quality, and ensures that the frame processing be adaptive to the mechanization and assembly line production with high efficiency, reasonable and accurate positioning and reliable stability of product quality.

Description

technical field [0001] The invention relates to a welding processing method for a railway vehicle frame, in particular to a welding processing method using bolts and pin sleeves as positioning references, and belongs to the technical field of numerical control positioning of large-scale welding parts. Background technique [0002] In the past, the processing flow of cast frame and welded frame on the gantry milling machine is: Welding—Scribing overall inspection and marking a processing line (horizontal line)—Horizontal plane processing—Secondary marking (Elevation processing line)—Elevation processing—Three times Scribing (hole line) - three times of processing, some structures even need four times of scribing, the process is complicated, and there are certain requirements for the technical level of the operators. However, the machining process on the machining center cannot adopt the process of repeatedly marking lines. First, it is necessary to concentrate the machining p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/04
Inventor 谢莹莹鲍凯楚永平
Owner CRRC NANJING PUZHEN CO LTD
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