High-precision special-shaped part machining and positioning tool
By combining the guiding mechanism and the pressing mechanism, the problem of aligning the wedge block with the wedge notch was solved, enabling precise assembly of the shaft and bearing and improving processing efficiency.
Patent Information
- Application Number
- CN202520348397.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-03
AI Technical Summary
During the parts processing, it is difficult to accurately align the wedge blocks and wedge notches of bearings and shafts, resulting in low assembly efficiency.
By setting up a first guide mechanism and a second guide mechanism, the direction of the wedge block on the rotating shaft and the wedge notch on the inner ring of the bearing are adjusted so that the wedge block is positioned directly above the notch, and the wedge block is precisely inserted using a pressing mechanism.
It enables precise assembly between the shaft and the bearing, improving assembly and processing efficiency.
Smart Images
Figure CN223933466U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of positioning tooling technology, specifically a high-precision positioning tooling for machining irregularly shaped parts. Background Technology
[0002] During parts processing, workpieces need to be assembled. For example, when installing a bearing and a shaft, the shaft needs to be inserted into the inner ring of the bearing, and the wedge block on the outer wall of the shaft needs to be inserted into the wedge notch of the inner ring of the bearing. Therefore, after clamping and fixing the bearing, the wedge block on the shaft needs to be precisely positioned and aligned with the wedge notch of the inner ring of the bearing. Currently, the position of the wedge block on the shaft is manually adjusted to align with the wedge notch of the inner ring of the bearing, which often results in inaccurate alignment, leading to low assembly and processing efficiency. Utility Model Content
[0003] In view of the problems existing in the current high-precision positioning fixture for machining irregular parts, this utility model is proposed.
[0004] Therefore, the purpose of this utility model is to provide a high-precision positioning fixture for machining irregularly shaped parts. This solves the problem that during the machining process, it is necessary to assemble the workpiece. For example, when installing a bearing and a shaft, the shaft needs to be inserted into the inner ring of the bearing, and the wedge block on the outer wall of the shaft needs to be inserted into the wedge notch of the inner ring of the bearing. Therefore, after clamping and fixing the bearing, the wedge block on the shaft needs to be precisely positioned and aligned with the wedge notch of the inner ring of the bearing. Currently, the position of the wedge block on the shaft is manually adjusted to align with the wedge notch of the inner ring of the bearing, which often results in inaccurate alignment and leads to low assembly and machining efficiency.
[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:
[0006] A high-precision positioning fixture for machining irregularly shaped parts includes a support platform, on which a bracket and a clamping assembly are mounted. A pressing mechanism is mounted on the bracket, and a first guiding mechanism is mounted on the bracket. A second guiding mechanism is mounted below the support platform. The first and second guiding mechanisms are used to align the wedge-shaped notch on the bearing with the wedge-shaped block on the rotating shaft.
[0007] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts according to this utility model, the bracket includes a support column mounted on a support platform, and a top support plate is installed at the top of the support column.
[0008] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts described in this utility model, the pressing mechanism includes a hydraulic cylinder fixedly mounted on a top support plate, and a sleeve is installed at the bottom of the telescopic rod of the hydraulic cylinder, the sleeve being used to cover the end of the rotating shaft.
[0009] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts according to this utility model, the first guiding mechanism includes a support rod welded to a support column, and a U-shaped guide block is welded to the end of the support rod.
[0010] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts according to this utility model, the second guiding mechanism includes an electric push rod mounted on a support leg at the bottom of a support platform. A support plate is welded to the top of the electric push rod, and a square tube is welded to the top of the support plate. A square rod is slidably connected to the inner wall of the square tube, and an auxiliary pin wedge block is welded to the top of the square rod. A through hole is provided on the support platform for the square rod and the auxiliary pin wedge block to pass through. A spring is provided inside the square tube, and the two ends of the spring are welded to the square rod and the support platform, respectively.
[0011] As a preferred embodiment of the high-precision positioning fixture for machining irregular parts according to this utility model, wherein: a first support connecting seat is welded on the support leg, an electric push rod is inserted into the inner wall of the first support connecting seat, and the electric push rod and the first support connecting seat are fixed by bolts;
[0012] The top of the sleeve is welded with a second support connecting seat, the telescopic rod of the hydraulic cylinder is inserted into the second support connecting seat, and the second support connecting seat and the telescopic rod of the hydraulic cylinder are fixed together by bolts.
[0013] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts described in this utility model, the clamping assembly includes a fixing block welded to a support platform, a fastening pin threaded onto the fixing block, and the end of the fastening pin being rotatably connected to an arc-shaped clamping plate via a bearing.
[0014] As a preferred embodiment of the high-precision positioning fixture for machining irregularly shaped parts described in this utility model, the bottom of the arc-shaped clamping plate is welded with a slider, and a groove is provided on the support platform, with the slider slidably connected to the inner wall of the groove.
[0015] Compared with existing technologies:
[0016] By setting up a first guide mechanism and a second guide mechanism, the orientation of the wedge block on the rotating shaft and the wedge notch on the inner ring of the bearing are adjusted to achieve positioning between the wedge block and the wedge notch, so that the wedge block on the rotating shaft is directly above the wedge notch on the inner ring of the bearing. Thus, during the process of the downward pressing mechanism driving the rotating shaft to descend, while the rotating shaft is inserted into the inner ring of the bearing, the wedge block on the rotating shaft is inserted into the wedge notch on the inner ring of the bearing, achieving precise assembly between the rotating shaft and the bearing and improving assembly and processing efficiency. Attached Figure Description
[0017] Figure 1 This is a structural schematic diagram of the present invention;
[0018] Figure 2 Provided by this utility model Figure 1 A magnified view of a portion of the image;
[0019] Figure 3 An enlarged view of the second guide mechanism provided by this utility model;
[0020] Figure 4 A top view of the bearing provided by this utility model.
[0021] In the diagram: 1. Support platform; 3. Support column; 5. Top support plate; 6. Hydraulic cylinder; 7. Sleeve; 8. Rotating shaft; 81. Wedge block; 9. Support rod; 10. U-shaped guide block; 11. Fixing block; 12. Fastening pin; 13. Arc-shaped clamping plate; 14. Slider; 15. Bearing; 151. Wedge notch; 16. Square rod; 161. Auxiliary pin wedge block; 17. Square tube; 18. Support plate; 19. Electric push rod; 20. First support connecting seat; 21. Spring; 22. Second support connecting seat. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0023] This utility model provides a high-precision positioning fixture for machining irregularly shaped parts. Please refer to [link / reference]. Figure 1-4 It includes a support platform 1, on which a bracket and a clamping assembly are mounted. A pressing mechanism is mounted on the bracket, and a first guide mechanism is mounted on the bracket. A second guide mechanism is mounted below the support platform 1. The first guide mechanism and the second guide mechanism are used to align the wedge-shaped notch 151 on the bearing 15 with the wedge-shaped block 81 on the rotating shaft 8.
[0024] The bracket includes a support column 3 mounted on a support platform 1, and a top support plate 5 is mounted on the top of the support column 3.
[0025] The pressing mechanism includes a hydraulic cylinder 6 fixedly mounted on the top support plate 5. A sleeve 7 is installed at the bottom of the telescopic rod of the hydraulic cylinder 6. Specifically, a second support connecting seat 22 is welded to the top of the sleeve 7. The telescopic rod of the hydraulic cylinder 6 is inserted into the second support connecting seat 22, and the second support connecting seat 22 and the telescopic rod of the hydraulic cylinder 6 are fixed together by bolts. The sleeve 7 is used to cover the end of the rotating shaft 8.
[0026] The first guiding mechanism includes a support rod 9 welded to the support column 3, and a U-shaped guide block 10 welded to the end of the support rod 9, such as... Figure 1 As shown, at this time, the wedge block 81 is located inside the U-shaped guide block 10 and is slidably connected to the U-shaped guide block 10. At this time, the wedge block 81 is located on the right side of the rotating shaft 8.
[0027] The second guiding mechanism includes an electric push rod 19 mounted on a support leg at the bottom of the support platform 1. Specifically, a first support connecting seat 20 is welded to the support leg, and the electric push rod 19 is inserted into the inner wall of the first support connecting seat 20. The electric push rod 19 and the first support connecting seat 20 are fixed together by bolts. A support plate 18 is welded to the top of the electric push rod 19, and a square tube 17 is welded to the top of the support plate 18. A square rod 16 is slidably connected to the inner wall of the square tube 17. An auxiliary pin wedge block 161 is welded to the top of the square rod 16. The size of the auxiliary pin wedge block 161 is slightly smaller than the size of the wedge block 81, so that the auxiliary pin wedge block 161 can easily enter the wedge notch 151. A through hole is provided on the support platform 1 for the square rod 16 and the auxiliary pin wedge block 161 to pass through. A spring 21 is provided inside the square tube 17, and the two ends of the spring 21 are welded to the square rod 16 and the support plate 18, respectively.
[0028] The clamping assembly includes a fixing block 11 welded to the support platform 1, a fastening pin 12 threaded onto the fixing block 11, and the end of the fastening pin 12 rotatably connected to the arc-shaped clamping plate 13 via a bearing.
[0029] A slider 14 is welded to the bottom of the arc-shaped clamping plate 13, and a groove is provided on the support platform 1. The slider 14 is slidably connected to the inner wall of the groove, so that the arc-shaped clamping plate 13 will not rotate during the tightening of the fastening pin 12, thus making it easier for the arc-shaped clamping plate 13 to clamp the bearing 15.
[0030] In practical use, the bearing 15 is placed between two arc-shaped clamping plates 13, and the fastening pin 12 is tightened so that the two arc-shaped clamping plates 13 clamp the bearing 15. The inner ring of the bearing 15 is rotated so that the notch on the bearing 15 is on the right side. The electric push rod 19 extends and drives the auxiliary pin wedge block 161 into the wedge notch 151. At the same time, the top end of the rotating shaft 8 is inserted into the sleeve 7, and the wedge block 81 enters the U-shaped guide block 10. At this time, the wedge block 81 is directly above the wedge notch 151. The hydraulic cylinder 6 drives its telescopic rod to extend and drives the sleeve 7 to descend, thereby pressing the rotating shaft 8 down into the inner ring of the bearing 15. At the same time, the wedge block 81 is inserted into the wedge notch 151, thus completing the assembly between the bearing 15 and the rotating shaft 8.
[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A high-precision positioning fixture for machining irregularly shaped parts, comprising a support platform (1), wherein a bracket and a clamping assembly are mounted on the support platform (1), and a pressing mechanism is mounted on the bracket, characterized in that: A first guide mechanism is installed on the bracket, and a second guide mechanism is installed below the support platform (1). The first guide mechanism and the second guide mechanism are used to align the wedge notch (151) on the bearing (15) with the wedge block (81) on the rotating shaft (8).
2. The high-precision positioning fixture for machining irregularly shaped parts according to claim 1, characterized in that, The bracket includes a support column (3) mounted on a support platform (1), and a top support plate (5) is mounted on the top of the support column (3).
3. The high-precision positioning fixture for machining irregularly shaped parts according to claim 2, characterized in that, The pressing mechanism includes a hydraulic cylinder (6) fixedly installed on the top support plate (5). A sleeve (7) is installed at the bottom of the telescopic rod of the hydraulic cylinder (6). The sleeve (7) is used to cover the end of the rotating shaft (8).
4. A high-precision positioning fixture for machining irregularly shaped parts according to claim 2 or 3, characterized in that, The first guiding mechanism includes a support rod (9) welded to a support column (3), and a U-shaped guide block (10) is welded to the end of the support rod (9).
5. A high-precision positioning fixture for machining irregularly shaped parts according to claim 3, characterized in that, The second guiding mechanism includes an electric push rod (19) mounted on a support leg at the bottom of the support platform (1). A support plate (18) is welded to the top of the electric push rod (19). A square tube (17) is welded to the top of the support plate (18). A square rod (16) is slidably connected to the inner wall of the square tube (17). An auxiliary pin wedge block (161) is welded to the top of the square rod (16). A through hole is provided on the support platform (1) for the square rod (16) and the auxiliary pin wedge block (161) to pass through. A spring (21) is provided inside the square tube (17). The two ends of the spring (21) are welded to the square rod (16) and the support plate (18) respectively.
6. The high-precision positioning fixture for machining irregularly shaped parts according to claim 5, characterized in that, A first support connecting seat (20) is welded onto the support leg. An electric push rod (19) is inserted into the inner wall of the first support connecting seat (20). The electric push rod (19) and the first support connecting seat (20) are fixed together by bolts. The top of the sleeve (7) is welded with a second support connecting seat (22), the telescopic rod of the hydraulic cylinder (6) is inserted into the second support connecting seat (22), and the second support connecting seat (22) and the telescopic rod of the hydraulic cylinder (6) are fixed together by bolts.
7. The high-precision positioning fixture for machining irregularly shaped parts according to claim 1, characterized in that, The clamping assembly includes a fixing block (11) welded to a support platform (1), and a fastening pin (12) is threaded onto the fixing block (11). The end of the fastening pin (12) is rotatably connected to an arc-shaped clamping plate (13) via a bearing.
8. The high-precision positioning fixture for machining irregularly shaped parts according to claim 7, characterized in that, The bottom of the arc-shaped clamping plate (13) is welded with a slider (14), and a groove is provided on the support platform (1), with the slider (14) slidably connected to the inner wall of the groove.