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Efficient grinding method of ballastless track plate

A technology of grinding and ballastless track, which is applied to machine tools, metal processing equipment, grinding/polishing equipment, etc. suitable for grinding workpiece planes, and can solve the problem of tool marks on the bearing surface, failure to achieve grinding accuracy, and error Large and other problems, to achieve the effect of reducing grinding loss, improving effective utilization rate, and increasing service life

Active Publication Date: 2012-07-04
四川升腾元创机电技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to errors such as spindle rotation and machine tool coordinate transformation during the two grindings, tool marks appear on the ground bearing surface, and the error is relatively large. The grinding accuracy of 0.1mm cannot be achieved within the range of 6550mm in total length.

Method used

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  • Efficient grinding method of ballastless track plate
  • Efficient grinding method of ballastless track plate
  • Efficient grinding method of ballastless track plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention discloses a high-efficiency grinding method for a ballastless track slab. A crossbeam 3 is arranged between two longitudinal beams 1 in a numerical control grinding machine, and two spindle boxes 4 are arranged on the crossbeam 3, and the two spindle boxes 4 are arranged on the crossbeam 3. The headstock 4 is provided with a ram 5, and the ram 5 moves vertically up and down in the headstock 4 along the movement guide rail arranged in the headstock 4. The lower end surface of the ram 5 is respectively provided with a grinding spindle 2, and an integrally formed grinding wheel 6 is respectively arranged on the grinding spindle 2, and each integrally formed grinding wheel 6 corresponds to two half widths of the bearing surface of the processed track plate respectively; The shape of the forming grinding wheel 6 matches the shape of the rail bearing surface that needs to be processed. The drive motor that drives the grinding spindle 2 to rotate uses a rated powe...

Embodiment 2

[0029] On the basis of Example 1, as a preferred embodiment of the present invention, referring to the accompanying drawing 4 of the specification, the crossbeam 3 is provided with a headstock 2 and four slide rails 1 supporting the horizontal movement of the headstock 2, and the crossbeam 3 adopts The frame structure, through the symmetrical design, reduces the vibration and thermal deformation during the grinding process, and enhances the stability and rigidity of the ram during processing.

Embodiment 3

[0031] On the basis of the above-mentioned embodiments, as a best implementation mode of the present invention, refer to the appended Figure 5 , the headstock 3 is provided with a ram 2 and four guide rails 1 supporting the vertical movement of the ram. Stability and rigidity of the pillow during processing.

[0032] The grinding spindle adopts a rolling bearing with a diameter of 200mm, and the bearing support distance of the grinding spindle reaches more than 1.5 times of the grinding size. The rated power of the grinding spindle drive motor is 150Kw, and the maximum speed of the grinding spindle reaches 2000r / min.

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Abstract

The invention discloses an efficient grinding method of a ballastless track plate. Two spindle boxes are arranged on a transverse beam in a numerically-controlled grinder; the two spindle boxes slide along motion sliding rails in the length direction of the transverse beam; the two spindle boxes correspondingly process widths of two half-edges of a rail bearing surface of the track plate respectively; rams in the spindle boxes move up and down vertically through the motion sliding rails which are arranged in the spindle boxes; a driving motor for driving a grinding spindle adopts a rated power of 150 Kw; and the motor operates to drive the grinding spindle to drive an integrally-formed grinding wheel to grind the two half-edges of the rail bearing surface of the track plate simultaneously. By the method, the integral one-step forming grinding of a rail bearing table of the track plate is realized, and the production efficiency of a machine tool is improved; the method has the advantages of high speed, high precision and high rigidity; meanwhile, gear marks cannot be formed on the rail bearing surface which is processed by the method; an error is small; and grinding precision of 0.1 mm can be achieved within an overall length range of 6,550 mm.

Description

technical field [0001] The invention relates to the technical field of processing methods for ballastless track slabs required in high-speed railway construction, in particular to a method for grinding a ballastless track slab bearing platform by using a numerical control grinder. Background technique [0002] At present, in the construction of high-speed railways with a speed greater than 250Km per hour, the CRTSII ballastless track system (also known as the improved Borg style ballastless track system) is widely used. Grinding and engraving the serial number on the rail platform. Since track slabs are the foundation of railway construction, efficient manufacturing of track slabs has become an urgent problem to be solved in the development of high-speed railways. [0003] At present, when domestic and foreign track slab manufacturers produce CRTSII ballastless track slabs, the grinding of the rail bearing platform adopts foreign processing methods: the rail bearing pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B7/14B24D5/02
Inventor 王国春李培奇吴元文王再东周维佳王国志王键王家力姜华
Owner 四川升腾元创机电技术研究有限公司