Tool special for front axle taper hole machining

Abstract

The utility model belongs to the technical field of special clamps, and particularly relates to a tool special for front axle taper hole machining, which comprises a lower plate mounted on a machining workbench. The whole lower plate is an arc-shaped plate, and mounting through holes are uniformly distributed in the plate surface of the lower plate; a supporting part is arranged on the plate face, close to the arc-shaped end, of the lower plate, and a positioning part is arranged on the plate face of the other end of the lower plate. A front axle workpiece to be machined is arranged between the supporting component and the positioning component. And the supporting part comprises supporting plates which are welded on the front arc-shaped end plate surface of the lower plate and are uniformly distributed. According to the utility model, the supporting part and the positioning part are matched for use, so that the front axle workpiece can be conveniently and quickly fixed and positioned, the processed front axle workpiece can more easily meet the dimensional tolerance requirement of a finish machining drawing, the re-centering and re-alignment of the workpiece during continuous processing are omitted, the subsequent dimensional inspection and flaw detection procedures can be conveniently and quickly carried out, and the production efficiency is improved. Therefore, the production cycle is shortened, the production efficiency is improved, and benefits are brought to enterprises.

Description

Technical Field

[0001] This utility model belongs to the field of special fixture technology, specifically relating to a special tooling for machining front axle tapered holes. Background Technology

[0002] Currently, there are no dedicated tooling fixtures on the market specifically for machining the front axle tapered hole. Existing fixtures are all used for single-piece, discontinuous machining on machine tools using temporary accessories. This machining method is subject to many limitations. The availability of appropriately sized accessories, the experience of the workers, and dimensional measurement errors can all significantly hinder machining, and in severe cases, lead to scrap. Consequently, this machining method cannot meet the accuracy requirements of the front axle drawings or the processing efficiency required by customers. Inexperienced workers can easily cause inaccurate workpiece positioning, resulting in machining errors. Since the accessories required for workpiece positioning and clamping are random, unsuitable accessory sizes may necessitate machining the accessories first, reducing machining efficiency. Machining errors caused by numerous measurements and angles require a series of remedial measures to eliminate errors, resulting in low production efficiency, long processing cycles, increased rework costs, and hindering business development. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a special tooling fixture that is simple in structure, can improve processing accuracy, shorten processing cycle, improve production efficiency, and reduce rework costs.

[0004] The objective of this utility model can be achieved using the following technical solutions:

[0005] A special tooling for machining a front axle tapered hole includes a lower plate mounted on a machining worktable; the lower plate is an arc-shaped plate with evenly distributed mounting through holes on its surface; a support component is provided on the surface of the lower plate near the arc-shaped end, and a positioning component is provided on the surface of the other end of the lower plate; a front axle workpiece to be machined is placed between the support component and the positioning component; the support component includes a support plate welded to the arc-shaped end of the lower plate in an evenly distributed manner; a horizontally arranged upper plate is also welded to the support plate; a positioning plate is provided on the surface of the upper plate.

[0006] The positioning component includes two front fixing blocks symmetrically arranged on the middle section of the lower plate and a rear fixing block arranged on the rear section of the lower plate; both front fixing blocks are rectangular blocks with threaded holes on their top surfaces; each front fixing block is connected to a vertically arranged clamping screw through a threaded hole; and a pressure rod is threadedly connected to the top of the clamping screws.

[0007] The top surface of the rear fixing block is provided with a threaded hole, and a positioning bolt and a positioning nut are provided in the threaded hole.

[0008] The positioning plate is a circular plate structure. The positioning plate is connected to the upper plate by threads, and the outer diameter of the positioning plate is compatible with the inner diameter of the through hole on the front axle workpiece.

[0009] The lower plate is connected to the machine tool table via bolts through mounting holes.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by using the support component and the positioning component together, this utility model can conveniently and quickly fix and position the front axle workpiece, so that the processed front axle workpiece can more easily meet the dimensional tolerance requirements of the precision machining drawings, eliminate the need to re-center and align the workpiece during continuous processing, and facilitate the rapid subsequent dimensional inspection and flaw detection processes, thereby shortening the production cycle, improving production efficiency, and bringing benefits to the enterprise. Attached Figure Description

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is a schematic diagram illustrating the operation of this utility model;

[0013] Figure 3 This is an isometric view of the front axle workpiece in this utility model.

[0014] Marked in the diagram: 1. Lower plate, 2. Support plate, 3. Upper plate, 4. Positioning plate, 5. Front fixing block, 6. Rear fixing block, 7. Clamping screw, 8. Pressure rod, 9. Positioning bolt, 10. Positioning nut, 11. Mounting through hole, 12. Front axle workpiece, 13. Machined surface A, 14. Machined surface B. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] like Figures 1-3As shown, a special tooling for machining a front axle tapered hole includes a lower plate 1 mounted on a machining worktable; the lower plate 1 is an arc-shaped plate with evenly distributed mounting through holes 11 on its surface; the lower plate 1 is connected to the machine tool worktable via bolts through the mounting through holes 11; a support component is provided on the surface of the lower plate 1 near the arc-shaped end, and a positioning component is provided on the surface of the other end of the lower plate 1; a front axle workpiece 12 to be machined is placed between the support component and the positioning component; the support component includes components welded to the arc-shaped end surface of the lower plate 1 in an evenly distributed manner. The support plate 2; a horizontally arranged upper plate 3 is also welded onto the support plate 2; a positioning plate 4 is provided on the surface of the upper plate 3; the positioning component includes two front fixing blocks 5 symmetrically arranged on the middle section surface of the lower plate 1 and a rear fixing block 6 arranged on the rear section surface of the lower plate 1; both front fixing blocks 5 are rectangular blocks in general, and threaded holes are provided on their top surfaces; each front fixing block 5 is connected to a vertically arranged clamping screw 7 through a threaded hole; a pressure rod 8 is threadedly connected to the top of the clamping screw 7; here the front... After the shaft workpiece 12 is placed, the mounting rod 8 is pressed against the surface of the front shaft workpiece 12. Tightening the nut on the mounting rod 8 causes the mounting rod 8 to move downwards, thus locking the front shaft workpiece 12. The rear fixing block 6 has a threaded hole on its top surface, and a positioning bolt 9 and a positioning nut 10 are installed in the threaded hole. Here, the positioning bolt 9 moves up and down through the threaded hole on the rear fixing block 6 as a floating support. The positioning bolt 9 has a positioning nut 10, which increases the rigidity of the positioning bolt 9 and prevents it from moving downwards due to gravity. Plate 4 is a circular plate structure. The positioning plate 4 is connected to the upper plate 3 by threads, and the outer diameter of the positioning plate 4 is compatible with the inner diameter of the through hole on the front axle workpiece 12. The upper surface of the upper plate 3 can restrict three degrees of freedom, and the outer circular surface of the positioning plate 4 can restrict two degrees of freedom. The machined surfaces are the inner conical surface and the end face. The surface that contacts the upper plate is the machined surface. The positioning plate 4 and the upper plate 3 are connected by threads, which can be easily disassembled and assembled. The positioning plate 4 that is compatible with the size of the front axle workpiece 12 can be selected to improve the overall efficiency of this tooling and achieve the purpose of multi-purpose tooling.

[0017] In practical use, after placing the lower plate 1 of this tooling in a suitable position on the machining work platform, it is connected to the machine tool worktable by bolts through the mounting through hole 11. The machined surfaces A13 and B14 of the front axle workpiece 12 are brought into contact with and positioned on the plane of the upper plate 3 and the plane of the positioning plate 4. Then, the height of the positioning bolt 9 is adjusted so that the machined surface B14 of the front axle workpiece 12 is in parallel contact with the plane of the upper plate 3. Then, the pressure rod 8 is passed through the clamping screws 7 on both sides, and the nut on the pressure rod 8 is tightened to make the pressure rod 8 move downward to clamp and lock the front axle workpiece 12, thus completing the leveling and positioning of the front axle workpiece 12. After the preparatory work is completed, the front axle workpiece 12 can be processed, so that the processed front axle workpiece 12 can more easily meet the dimensional tolerance requirements of the precision machining drawings. It eliminates the need to re-center and align the workpiece during continuous processing, and facilitates quick subsequent dimensional inspection and flaw detection processes, thereby shortening the production cycle and eliminating unnecessary rework due to excessive processing errors, thereby reducing production costs.

[0018] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A special tooling for machining a front axle tapered hole, comprising a lower plate (1) mounted on a machining worktable; characterized in that: The lower plate (1) is an arc-shaped plate with evenly distributed mounting through holes (11) on its surface; a support component is provided on the plate surface of the lower plate (1) near the arc end, and a positioning component is provided on the plate surface of the other end of the lower plate (1); a front axle workpiece (12) to be processed is provided between the support component and the positioning component; the support component includes a support plate (2) welded to the front arc end plate surface of the lower plate (1) in an evenly distributed manner; a horizontally arranged upper plate (3) is also welded on the support plate (2); a positioning plate (4) is provided on the plate surface of the upper plate (3).

2. The special tooling for machining the front axle tapered hole according to claim 1, characterized in that: The positioning component includes two front fixing blocks (5) symmetrically arranged on the middle section of the lower plate (1) and a rear fixing block (6) arranged on the rear section of the lower plate (1); the two front fixing blocks (5) are rectangular blocks in whole, and threaded holes are provided on their top surfaces; each front fixing block (5) is connected to a vertically arranged clamping screw (7) through a threaded hole; the top of the clamping screw (7) is connected to a pressure rod (8) through a thread.

3. The special tooling for machining the front axle tapered hole according to claim 2, characterized in that: The rear fixing block (6) has a threaded hole on its top surface, and a positioning bolt (9) and a positioning nut (10) are provided on the threaded hole.

4. The special tooling for machining the front axle tapered hole according to claim 1, characterized in that: The positioning plate (4) is a circular plate structure. The positioning plate (4) is connected to the upper plate (3) by a thread, and the outer diameter of the positioning plate (4) is compatible with the inner diameter of the through hole on the front axle workpiece (12).

5. The special tooling for machining the front axle tapered hole according to claim 1, characterized in that: The lower plate (1) is connected to the machine tool table by bolts through the mounting through hole (11).

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