Integral processing method for truck frame of high-speed motor train unit
A high-speed EMU and overall processing technology, which is applied in metal processing, metal processing equipment, metal processing machinery parts, etc., can solve the problems of not being able to guarantee the overall processing accuracy, occupying equipment service time, and difficult secondary alignment, etc., to avoid Effects of loss of precision, improvement of machining precision, and improvement of utilization rate
Active Publication Date: 2010-02-03
CHINA RAILWAYS CORPORATION +2
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[0003] The overall processing technology of the traditional frame is as follows: firstly fix the overall processing fixture of the frame on the processing equipment, then clamp and align the frame to be processed on the fixture, the whole process completely takes up the equipment's use time, and finally proceed to processing, and the processing process Once there is a problem in the middle, it is almost difficult to repair, because once the partially processed frame is removed from the fixture, it is difficult to achieve secondary alignment, and the overall processing accuracy cannot be guaranteed.
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[0023] 1. Reference figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , put the frame 1 to be processed with its reverse side up on the accompanying base plate 2 horizontally, and locate the frame with the horizontal, vertical and height-oriented reference planes 3, 4, and 5 for positioning;
[0024] 2. Ensure that there is no force or moment between the frame and other clamping devices except for the contact with the positioning surface 3, 4, 5. When clamping, firstly attach the magnetic dial indicator 10 to the accompanying base plate 2, and the dial indicator head Contact the clamping devices 6, 7, 8, 9 of the frame, adjust the reading of the dial indicator to zero at the clamped position, and adjust the clamping devices 6, 7, 8, 9 composed of the pressing plate and the adjustable support, so that the dial indicator The reading of 10 changes to 20 (that is, the support is 0.2mm, which can be slightly increased according to the operator), ...
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The invention discloses an integrated processing technology of a high speed motor train unit bogie frame, comprising a magnetic dial indicator which is used to quantize and control clamping deformation and clamping force, an integrated accompanying chemical device which is used for the integrated processing of the frame, a numerical control core milling processing center which is used for the integrated processing of the frame. By using the magnetic dial indicator to quantize and control clamping deformation and clamping force, the integrated processing technology effectively controls the stress produced by clamping frocks, and furthermore guarantees the precision of the size of the frame after finishing processing and loosening the clamp. By using the method for determining the relationship between the workpiece and the machine tool coordinate system through two positioning, the integrated processing technology improves the utilization rate of the machine tool, and ensures that the improvement of the clamping precision of the frame becomes possible on the other hand. By using the numerical control core milling processing center, the integrated processing technology fully utilizesall kinds of functions of the machine tool to process the frame with a pentahedron analogously type, with the result that the precision loss which may be produced by multiple step processing can be effectively avoided, and the processing precision and quality of the frame can be greatly improved.
Description
technical field [0001] The invention belongs to the technical field of tooling technology for mechanical parts, and relates to an overall processing method for a bogie frame of a high-speed EMU. Background technique [0002] With the vigorous development of my country's high-speed railway, the technical difficulties encountered in the localization of related components have become the key factors restricting production. How to successfully transform foreign processing and manufacturing technology into my country's existing rolling stock manufacturing equipment It has become a topic that every high-speed railway technology introduction engineer has to face. [0003] The overall processing technology of the traditional frame is as follows: firstly fix the overall processing fixture of the frame on the processing equipment, then clamp and align the frame to be processed on the fixture, the whole process completely takes up the equipment's use time, and finally proceed to process...
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IPC IPC(8): B23Q15/22B23Q3/00
Inventor 刘志泰刘孝峰马娜李长新侯昆仑
Owner CHINA RAILWAYS CORPORATION