Axial positioning tool for long-axis part

Abstract

The utility model relates to the field of machining, in particular to an axial positioning tool for a long-axis part. The device comprises a trifurcate bracket, an upper pressing arm, an anti-skid pad, a square handle, a screw rod, a parallel pressing head, a bearing triangular support and the like. The three-fork support is placed on a fixed plane, a three-fork arm at the bottom of the support is provided with symmetrically-placed bearing triangular supports through rivets, a vertical side arm of the support is inserted into an upper pressing arm and fixed through a pin, a threaded rod is screwed into a threaded hole of the upper pressing arm and connected with a parallel pressing head, and a threaded lead screw is used for transmitting clamping force needed by positioning in the vertical direction. And a three-way resultant force is formed with the bearing triangular support to realize the axial positioning of the long-axis part. When the device is used for axially positioning the long-axis part, the subsequent machining tolerance grade can be effectively improved, the problems of dimensional deviation, workpiece scrapping and the like caused by eccentricity in the machining process are avoided, and the machining qualification rate is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of machining, specifically, it relates to a tooling fixture for axial positioning of long shaft parts. Background Technology

[0002] In actual production, the main function of tooling fixtures is to improve production efficiency and product quality, help workers complete complex tasks, reduce labor intensity, and thus lower production costs. Simultaneously, they can ensure product accuracy and stability, avoiding errors and defects caused by manual operation. High-precision positioning is crucial for subsequent machining steps such as drilling and tapping of long shaft parts. Even slight deviations can cause machining errors to multiply, ultimately leading to workpiece scrap. Therefore, there is an urgent need to design a portable and efficient fixed-axis tooling to solve the current axial positioning problem faced by long shaft parts. Utility Model Content

[0003] To address the problems existing in the background technology, this utility model provides an axial positioning fixture for long shaft parts, which is suitable for parallel axis positioning of shaft parts of various diameters, applies force in three directions, provides accurate positioning, is easy to operate, and has high work efficiency.

[0004] This utility model is achieved through the following technical solution:

[0005] An axial positioning fixture for a long shaft part includes a three-pronged bracket 1, an upper pressure arm 2, a screw 5, and a load-bearing triangular support 7;

[0006] The three-pronged bracket 1 has a support rod at its three-pronged junction; one end of the upper pressure arm 2 is mounted on the support rod, and the other end has a screw hole; the screw is mounted in the screw hole, and the end of the screw is provided with a parallel pressure head 6 connected to its bearing.

[0007] Each fork of the three-pronged bracket is provided with at least two load-bearing triangular supports 7, and one corner of the load-bearing triangular support is hinged to the fork.

[0008] Furthermore, the support rod is perpendicular to the plane of the three-pronged bracket.

[0009] Furthermore, the support rod is provided with multiple mounting positions, each of which is a threaded hole; the sleeve at the other end of the upper pressure arm 2 is fitted onto the support rod and locked by a pin corresponding to the threaded hole.

[0010] Furthermore, a square handle is provided at the top of the screw.

[0011] Furthermore, an anti-slip pad is provided at the bottom of the parallel pressure head.

[0012] Furthermore, the load-bearing triangular bracket is hinged to the forked joint via rivets. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the axial positioning fixture in this application.

[0014] Figure 2 This is a side view of a large-diameter, long-shaft type part in this application being clamped in an axial positioning fixture.

[0015] Figure 3 This is a side view of a small-diameter long shaft part in this application being clamped in an axial positioning fixture.

[0016] Figure 4 This is a schematic diagram of the three-pronged bracket and support rod in this application.

[0017] Figure 5 This is a schematic diagram of the parallel pressure head in this application.

[0018] Figure 6 This is a schematic diagram of the structure supporting the triangular bracket in this application.

[0019] Figure 7 This is an isometric view of the cross-section of the screw in this application.

[0020] Figure 8 This is a schematic diagram of the upper pressure arm in this application.

[0021] In the diagram: 1. Tripod bracket; 1-1. Support rod; 2. Upper pressure arm; 3. Anti-slip pad; 4. Square handle; 5. Screw; 6. Parallel pressure head; 7. Bearing triangular drag; 8. Rivet; 9. Pin; 10. Large diameter cylindrical part; 11. Small diameter cylindrical part; 12. Sleeve; 13. Screw hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0023] Reference Figures 1 to 8 This embodiment includes a three-pronged bracket 1, an upper pressure arm 2, an anti-slip pad 3, a square handle 4, a screw 5, a parallel pressure head 6, a load-bearing triangular support 7, rivets 8, and pins 9. The support rod and the three-pronged bracket in this embodiment are an integral structure.

[0024] The three-pronged bracket 1 is made of square steel welded together. The three prongs at the bottom are directly provided with opposing through holes for installing rivets 8 that connect to the load-bearing triangular support 7. After installation, the load-bearing triangular support 7 can swing freely relative to the bracket.

[0025] The upper pressure arm 2 is inserted into the support rod at the top of the three-pronged bracket 1, and the pin 9 is inserted into the positioning hole on the side of the support to perform the initial vertical positioning of the upper pressure arm 2. The initial positioning position can be adjusted according to the diameter range of the positioning parts.

[0026] The screw 5 is screwed into the screw hole on the left side of the upper pressure arm 2. The screw is used to transmit the clamping force required for vertical positioning of the shaft workpiece. The upper end of the screw 5 is connected to the square handle 4 and is positioned using a fixing nut. The lower end of the screw 5 is connected to the parallel pressure head 6 through a frustum-shaped connector. The parallel pressure head 6 can rotate freely horizontally relative to the screw.

[0027] The anti-slip pad 3 has adhesive on one side and is bonded to the bottom of the parallel pressure head to increase the relative friction between the parallel pressure head and the part, thereby improving positioning stability.

[0028] like Figure 1 As shown, this utility model patent includes a three-pronged bracket 1, an upper pressure arm 2 inserted vertically into a support rod 1-1, a screw 3 screwed into the threaded hole of the upper pressure arm and connected to a parallel pressure head 6, and a load-bearing triangular support 7 symmetrically connected to the bottom of the bracket by rivets 8. The parallel pressure head and the load-bearing triangular supports on both sides limit the long shaft-type parts from three directions to achieve high-precision axial positioning.

[0029] like Figure 2 As shown, when it is necessary to axially position the large-diameter cylindrical part 8, first fix the upper pressure arm 2 to a higher position, adjust the symmetrical bearing triangular supports 7 on both sides to a state that can stably support the long shaft part, rotate the square handle 4, and use the lead screw to transmit the clamping force required for vertical positioning, and finally achieve the axial positioning of the large-diameter long shaft part.

[0030] like Figure 3 As shown, when it is necessary to axially position the small-diameter cylindrical part 9, first fix the upper pressure arm 2 to the lower middle position, so that the symmetrical bearing triangular supports 7 on both sides naturally rest on the three-pronged bracket 1. Rotate the square handle 4, and use the lead screw to transmit the clamping force required for vertical positioning, and finally realize the axial positioning of the small-diameter long shaft part.

[0031] It should be noted that the above description is merely a preferred application example of this utility model and is not intended to limit the scope of protection of this utility model. All technical solutions employing equivalent substitutions or equivalent transformations are within the scope of protection of this utility model.

Claims

1. An axial positioning fixture for long shaft parts, characterized in that, It includes a three-pronged bracket (1), an upper pressure arm (2), a screw (5), and a load-bearing triangular support (7); The three-pronged bracket (1) is provided with a support rod at the three-pronged junction end; one end of the upper pressure arm (2) is mounted on the support rod, and the other end is provided with a screw hole; the screw is mounted in the screw hole, and the end of the screw is provided with a parallel pressure head (6) connected to its bearing; Each fork of the three-pronged bracket is provided with at least two load-bearing triangular supports (7), and one corner of the load-bearing triangular support is hinged to the fork.

2. The axial positioning fixture for a long shaft part according to claim 1, characterized in that, The support rod is perpendicular to the plane of the three-pronged bracket.

3. The axial positioning fixture for a long shaft part according to claim 2, characterized in that, The support rod is provided with multiple mounting positions, each of which is a threaded hole; the sleeve at the other end of the upper pressure arm (2) is fitted onto the support rod and locked by a pin corresponding to the threaded hole.

4. The axial positioning fixture for a long shaft part according to claim 1, characterized in that, A square handle is provided at the top of the screw.

5. The axial positioning fixture for a long shaft part according to claim 1, characterized in that, The bottom of the parallel pressure head is provided with an anti-slip pad.

6. The axial positioning fixture for a long shaft part according to claim 1, characterized in that, The load-bearing triangular bracket is hinged to the forked branch joint by rivets.

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