Positioning clamp special for machining wheel-mounted hanger for high-speed rail

Abstract

The utility model relates to a special positioning clamp for machining a wheel-mounted hanger for a high-speed rail, which comprises a clamp seat body, and the outline of the plane of the periphery of the clamp seat body is in a shape completely corresponding to the outline of the vertical plane of the periphery of a wheel-mounted hanger finished product; concave tables of which openings are formed in the front part and the upper surface of the front part of the clamp seat body are formed in the corresponding positions of the clamp seat body corresponding to convex structures arranged at the front part and the central position of the bottom surface of the lower side of the wheel-mounted hanging finished product; round receding through holes with the receding function are formed in the corresponding positions, corresponding to a plurality of holes designed in the front face of the wheel-mounted hanging workpiece, of the clamp base body, internal threads are arranged in the receding through holes, and meanwhile each receding through hole has the positioning and fixing function and is provided with a positioning bolt with the corresponding aperture size in a matched mode. The clamp seat body is provided with a positioning hole for detachably mounting the clamp seat body on a working table of a processing machine tool, and is provided with a fixing bolt. According to the utility model, the processing efficiency can be greatly improved, and the high-precision process processing requirement can be ensured.

Description

Technical Field

[0001] The utility model relates to a special positioning fixture for wheel mounting and hanging processing for high-speed railways. Background Art

[0002] At present, all parts of my country's high-speed rail locomotives have basically been domestically produced. Many of its parts have special structures involving technical secrets that need to be protected. Therefore, in actual processing, many of its parts need to go through different manufacturers to complete the processing of different parts and structures of a workpiece.

[0003] The wheel-mounted suspension for high-speed locomotives is a component used on high-speed locomotives and is a non-standard part with a unique structure. When boring and surface milling are performed on the wheel-mounted suspension for high-speed locomotives, a special positioning fixture needs to be designed to ensure processing accuracy, work efficiency, reduce processing difficulty, and increase production. Utility Model Content

[0004] The technical purpose of the utility model is to provide a special positioning fixture for wheel-mounted hanging for high-speed railways, which can greatly improve the processing efficiency and ensure high-precision process processing requirements.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0006] A positioning fixture specially used for wheel-mounted hanging processing for high-speed railways comprises a fixture seat body which can be detachably mounted on a processing machine tool workbench, wherein the outer contour lines of the planes on the four peripheral surfaces of the fixture seat body are set to a shape which completely corresponds to the outer contour lines of the vertical planes on the four peripheral surfaces of the finished wheel-mounted hanging product; a concave platform with an opening located at the front and above the front of the fixture seat body is provided at a corresponding position of the fixture seat body corresponding to the raised structure provided at the front part and the central position of the lower bottom surface of the finished wheel-mounted hanging product; a circular clearance through hole which plays a clearance role is provided at a corresponding position on the fixture seat body corresponding to a number of holes designed on the front side of the wheel-mounted hanging workpiece, and an internal thread is provided in the clearance through hole, and each clearance through hole also plays a positioning and fixing role and is equipped with a positioning bolt of a corresponding aperture size, and a positioning hole is provided on the fixture seat body for detachably mounting the fixture seat body on the processing machine tool workbench, and is equipped with a fixing bolt.

[0007] The operating process of the above-mentioned positioning fixture of the utility model when used is: first, the above-mentioned positioning fixture having the same shape as the outer contour line of the wheel-mounted suspension is installed on the workbench of the processing machine tool through fixing bolts; then, the wheel-mounted suspension to be processed is matched to the shape of the corresponding fixture, and the wheel-mounted suspension to be processed is fixed on the fixture by passing the positioning pin through the to-be-processed hole of the wheel-mounted suspension to be processed; then, the outer contour of the wheel-mounted suspension and the corresponding protrusions and other structures are processed according to the outer contour line of the positioning fixture; then, some of the positioning pins are withdrawn to bore the holes, and after the processing of this part of the holes is completed, the corresponding positioning pins are inserted into this part of the holes, and then the positioning pins in other unprocessed hole diameters are taken out, and the remaining holes are bored.

[0008] The beneficial effects of the utility model are:

[0009] The wheel-mounted suspension for high-speed railways needs to be processed in multiple processes due to the special shape and structure of its expansion. The utility model is a milling and boring process after the outer contour shape of the wheel-mounted suspension and the special hole 4 have been positioned and the preliminary processing has been completed. The use of this special fixture can very efficiently complete the milling of the outer contour line and the corresponding structure of the wheel-mounted suspension, as well as the processing of the aperture boring of each special hole. It can ensure the correct positioning of the workpiece during the processing process and ensure the processing accuracy, especially the wheel-mounted suspension corresponding to this fixture has a complex and special outer contour line. The outer contour milling by this fixture is accurate and fast, and the work efficiency is greatly improved. The clearance hole set on the fixture is considered to be able to make way in advance in consideration of the processing depth of the boring head. It is designed as a hole instead of a concave table, which can easily and cleanly remove the iron filings remaining during processing, etc., which is convenient for the next processing. The use of the utility model fixture can greatly increase the processing volume, and the processing time is greatly shortened. Customer orders can be completed with quality and quantity, and various standards and requirements such as processing accuracy can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of the positioning fixture and the corresponding wheel-mounted suspension described in an embodiment of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the bottom surface of the positioning fixture described in an embodiment of the utility model.

[0012] In the figure: 1 fixture base, 1-1 the periphery of the fixture base, 2 wheel mounting and hanging, 3 recessed platform, 4 clearance through hole, 5 positioning hole. DETAILED DESCRIPTION

[0013] As attached Figure 1 , 2The figure shows an embodiment of a special positioning fixture for wheel-mounted suspension for high-speed railways of the utility model, which includes a fixture seat body 1 that can be detachably mounted on a workbench of a processing machine tool. The outer contour lines of the plane 1-1 of the four peripheries of the fixture seat body are set to a shape that completely corresponds to the outer contour lines of the vertical planes of the four peripheries of the finished product of the wheel-mounted suspension 2. A concave platform 3 with an opening located at the front and above the front of the fixture seat body is provided at a corresponding position of the fixture seat body 1 corresponding to the raised structure provided at the front of the finished product of the wheel-mounted suspension 2 and the central position of the lower bottom surface. Corresponding to the several holes designed on the front of the wheel-mounted suspension 2, a circular clearance through hole 4 that plays a clearance role is provided at a corresponding position on the fixture seat body 1, and an internal thread is provided in the clearance through hole 4. At the same time, each clearance through hole 4 also plays a positioning and fixing role and is equipped with a positioning bolt. A positioning hole 5 is provided on the fixture seat body 1 for detachably mounting the fixture seat body on the workbench of the processing machine tool, and is equipped with a fixing bolt.

Claims

1. A special positioning fixture for high-speed rail wheel hanging processing, characterized by: The positioning fixture includes a fixture seat body that can be detachably mounted on the workbench of a processing machine tool, the outer contour lines of the planes on the four sides of the fixture seat body are set to a shape that completely corresponds to the outer contour lines of the vertical planes on the four sides of the wheel-mounted suspension product; a concave platform with an opening located at the front and above the front of the fixture seat body is opened at a corresponding position of the fixture seat body corresponding to the raised structure provided at the front part and the central position of the lower bottom surface of the wheel-mounted suspension product; a circular clearance through hole that plays a clearance role is provided at a corresponding position on the fixture seat body corresponding to a number of holes designed on the front side of the wheel-mounted suspension workpiece, and an internal thread is provided in the clearance through hole. At the same time, each clearance through hole also plays a positioning and fixing role and is equipped with a positioning bolt with a corresponding aperture size. The fixture seat body is provided with a positioning hole for detachably mounting the fixture seat body on the workbench of the processing machine tool, and is equipped with a fixing bolt.

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