Positioning tool for eccentric shaft
Through the design of limit columns sliding in the limit cylinder of the tooling, the problems of large workload and low production efficiency when replacing specifications of the existing tooling are solved, and efficient adaptation and clamping of eccentric shafts of different specifications are achieved.
Patent Information
- Application Number
- CN202421925828.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-09
AI Technical Summary
When replacing eccentric shafts of different specifications, existing tooling needs to be replaced with a complete set of tooling, resulting in large workload and low production efficiency.
A positioning tool for eccentric shafts is designed, and the limiting columns sliding in the limiting cylinder are used to adjust the position of the limiting columns in the limiting cylinder to adapt to eccentric shafts of different specifications.
The clamping effect of eccentric shafts of different specifications is achieved, reducing the workload when replacing specifications and improving production efficiency.
Smart Images
Figure CN222932582U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of eccentric shaft positioning, in particular to a positioning tooling for an eccentric shaft. Background Art
[0002] As a key component in a reducer, the eccentric shaft of an RV reducer is closely related to the quality and service life of the reducer in terms of its machining accuracy. Considering the dimensional accuracy required for the part, the eccentric shaft of the RV reducer has very high requirements for the eccentricity and surface roughness of the shaft, and it must be machined in one clamping. When the existing tooling clamps and positions the eccentric shaft, since the bushing and the bottom plate of the tooling are integrated, one set of tooling can only machine one specification of the eccentric shaft. Every time a different specification of the eccentric shaft is changed, the entire set of tooling including the bottom plate needs to be replaced, resulting in a large workload and low production efficiency. Summary of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the utility model provides a positioning tooling for an eccentric shaft, which solves the problems that one set of tooling can only machine one specification of the eccentric shaft, and every time a different specification of the eccentric shaft is changed, the entire set of tooling including the bottom plate needs to be replaced, resulting in a large workload and low production efficiency.
[0004] To achieve the above object, the utility model provides the following technical solution: A positioning tooling for an eccentric shaft, including a limiting cylinder, an eccentric hole is provided on the limiting cylinder, a limiting column is slidably installed in the limiting cylinder, and the position of the limiting column in the limiting cylinder is defined by a fixing member;
[0005] The fixing member includes a base plate and a mounting plate installed on the base plate. A connecting rod extending downward is provided on the mounting plate, a fixing plate is vertically provided at the lower end of the connecting rod, and a preset mounting hole is provided on the fixing plate;
[0006] Penetrating grooves are installed through the front and rear ends of the limiting cylinder, a sliding groove is provided in the penetrating groove, sliding plates placed in the sliding groove are installed at both the left and right ends of the limiting column, the width of the structure of the limiting column extending outside the limiting cylinder is greater than the width of its structure placed inside the limiting cylinder, a docking hole is provided on the structure of the limiting column extending outside the limiting cylinder, and the position where the docking hole is provided is adapted to the preset mounting hole.
[0007] In one of the embodiments, the fixing member is symmetrically arranged before and after the symmetric center line of the limiting cylinder, a sleeve is installed between two symmetric fixing plates before and after, the sleeve is arranged at the lower end of the limiting column, and the sleeve is in two symmetric semi-circular rings;
[0008] A plurality of clamping grooves are provided on the side wall of the limiting cylinder, and the width of the clamping groove is not less than the width of the sleeve arrangement.
[0009] In one embodiment, an inner groove is formed on the substrate, and a screw rod is rotatably installed in the inner groove. The screw rod passes through two symmetrically arranged front and rear mounting plates and is threadedly connected to the mounting plates. The thread directions formed on the screw rod are arranged in opposite directions with the symmetry center line of the limiting cylinder as the dividing line, and one end of the screw rod is coaxially connected to a driving motor.
[0010] In one embodiment, the maximum distance between the two mounting plates is not greater than the structural length of the limiting column.
[0011] In one embodiment, the depth of the clamping groove is less than the distance between the sliding groove and the side wall of the limiting hole, and the sliding groove is in a T shape.
[0012] In one embodiment, an internal thread is formed in the preset mounting hole, and the opening diameter of the docking hole is smaller than the opening diameter of the preset mounting hole.
[0013] Compared with the prior art, the present utility model provides a positioning tooling for an eccentric shaft, having the following
[0014] Beneficial effects:
[0015] In the technical solution disclosed by the present utility model, by slidably arranging a limiting column in an open-shaped limiting cylinder, thus, when processing eccentric shafts of different specifications are replaced, as long as the shaft diameters are the same and the bottom plate thicknesses are different, deformation adaptation can be achieved by changing the position of the limiting column in the limiting cylinder. Therefore, the clamping effect on eccentric shafts of different specifications is increased, and when replacing, only the position of the limiting cylinder on the fixing member needs to be adjusted to complete the adaptation, increasing the adaptation effect on eccentric shafts of different specifications.
[0016] By the present utility model, a plurality of clamping grooves are formed on the sleeve. The function of the clamping grooves is to be clamped with the sleeve, so as to achieve the overall supporting force of the fixing member on the limiting cylinder first, limit the up-and-down movement of the limiting cylinder, and in addition, the clamping force of the sleeve on the clamping grooves can be established or released under the action of the screw rod, so as to facilitate the movement of the limiting cylinder and facilitate the clamping of eccentric shafts of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:
[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0019] Figure 2 is a top view structural diagram of the limiting cylinder and the limiting column of the present utility model;
[0020] Figure 3This is a schematic structural diagram of the fixing part of the utility model.
[0021] In the figure: 1. Limit cylinder; 2. Eccentric hole; 3. Limit post; 4. Fixing part; 41. Substrate; 42. Mounting plate; 43. Connecting rod; 44. Fixed plate; 45. Preset mounting hole; 5. Through groove; 6. Slide groove; 7. Docking hole; 8. Sleeve; 9. Clamping groove. Specific embodiments
[0022] The following will cooperate with the drawings and embodiments to detail the implementation manners of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.
[0024] Figures 1-3 This is an embodiment of the present utility model. The specific problem targeted by this specific embodiment is that when some toolings clamp and position an eccentric shaft, since the bushing and the base plate of the tooling are integrated, one set of tooling can only process one specification of eccentric shaft. For each change of the specification of the eccentric shaft, the entire set of tooling including the base plate needs to be replaced, resulting in a large workload and low production efficiency. This solution provides an idea for the eccentric shaft. The specific solution is to slidably arrange a limit post 3 in an open-shaped limit cylinder 1. Thus, when processing eccentric shafts of different specifications, as long as the shaft diameters are the same and the thicknesses of the base plates are different, deformation adaptation can be achieved by changing the position of the limit post 3 in the limit cylinder 1. Therefore, the clamping effect on eccentric shafts of different specifications is increased, and when replacing, only the position of the limit cylinder 1 on the fixing part 4 needs to be adjusted to complete the adaptation, increasing the adaptation effect on eccentric shafts of different specifications.
[0025] A specifically described eccentric shaft positioning tool is provided with a limit cylinder 1, an eccentric hole 2 is opened on the limit cylinder 1, the shaft of the eccentric shaft can pass through the eccentric hole 2, and subsequent processing is performed using external equipment. A limit column 3 is slidably installed in the limit cylinder 1. The limit column 3 changes its distance from the bottom of the limit cylinder 1 by sliding in the limit cylinder 1, thereby creating a space to accommodate eccentric shafts of different specifications. The limit column 3 is limited in its position in the limit cylinder 1 by a fixing member 4. The fixing member 4 includes a base plate 41 and a mounting plate 42 mounted on the base plate 41, a connecting rod 43 extending downward is provided on the mounting plate 42, a fixing plate 44 is vertically provided at the lower end of the connecting rod 43, a preset mounting hole 45 is provided on the fixing plate 44, a through groove 5 is installed through the front and rear ends of the limiting cylinder 1, a T-shaped slide groove 6 is provided in the through groove 5, a slide plate placed in the slide groove 6 is installed on the left and right ends of the limiting column 3, the width of the structure of the limiting column 3 extending outside the limiting cylinder 1 is greater than the width of the structure placed in the limiting cylinder 1, a docking hole is provided on the structure of the limiting column 3 extending outside the limiting cylinder 1, the opening position of the docking hole is adapted to the preset mounting hole 45, an internal thread is provided in the preset mounting hole 45, and the opening diameter of the docking hole is smaller than the opening diameter of the preset mounting hole 45.
[0026] A plurality of clamping grooves 9 are provided on the side wall of the limiting cylinder 1, and the width of the clamping grooves 9 is not less than the setting width of the sleeve. The depth of the clamping grooves 9 is less than the distance between the slide groove 6 and the side wall of the limiting hole. The fixing member 4 is symmetrical in front and back with the symmetrical center line of the limiting cylinder 1. A sleeve is installed between two front and back symmetrical fixing plates 44. The sleeve is set at the lower end of the limiting column 3. The sleeve is in two symmetrical semi-ring shapes. An inner groove is provided on the base plate 41. A screw is rotatably installed in the inner groove. The screw passes through two front and back symmetrical mounting plates 42 and is threadedly connected with the mounting plates 42. The direction of the thread provided on the screw is set in different directions with the symmetrical center line of the limiting cylinder 1 as the dividing line. One end of the screw is coaxially connected with a driving motor. The maximum spacing between the two mounting plates 42 is no greater than the structural length of the limiting column 3, so as to prevent the mounting plates 42 from being out of contact with the limiting column 3, thereby eliminating the supporting force on the limiting column 3 and increasing operator intervention. A plurality of clamping grooves 9 are provided on the sleeve, and the function of the clamping grooves 9 is to engage with the sleeve, so as to achieve the supporting force of the fixing member 4 as a whole on the limiting cylinder 1, thereby limiting the upward and downward movement of the limiting cylinder 1, and further, under the action of the screw, the sleeve can be prompted to establish or release the clamping force of the clamping groove 9, thereby facilitating the movement of the limiting cylinder 1 and facilitating the clamping of eccentric shafts of different specifications.
[0027] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.
[0028] It should be noted that, in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A positioning tool for an eccentric shaft, comprising a limiting cylinder (1), characterized in that: The limiting cylinder (1) is provided with an eccentric hole (2), a limiting column (3) is slidably installed in the limiting cylinder (1), and the position of the limiting column (3) in the limiting cylinder (1) is limited by a fixing member (4); The fixing member (4) comprises a base plate (41) and a mounting plate (42) mounted on the base plate (41); a connecting rod (43) extending downward is arranged on the mounting plate (42); a fixing plate (44) is vertically arranged at the lower end of the connecting rod (43); and a preset mounting hole (45) is opened on the fixing plate (44); The front and rear ends of the limit cylinder (1) are penetrated by a through groove (5), a slide groove (6) is provided in the through groove (5), and slide plates placed in the slide groove (6) are provided at the left and right ends of the limit column (3). The width of the structure of the limit column (3) extending outside the limit cylinder (1) is greater than the width of the structure placed inside the limit cylinder (1). A docking hole is provided on the structure of the limit column (3) extending outside the limit cylinder (1), and the opening position of the docking hole is adapted to the preset installation hole (45).
2. The eccentric shaft positioning tool according to claim 1, characterized in that: The fixing member (4) is symmetrical in front and back with respect to the symmetrical center line of the limiting cylinder (1), a sleeve is installed between two symmetrical fixing plates (44), the sleeve is arranged at the lower end of the limiting column (3), and the sleeve is in the shape of two symmetrical semi-rings; A plurality of clamping grooves (9) are provided on the side wall of the limiting cylinder (1), and the width of the clamping grooves (9) is not less than the setting width of the sleeve.
3. The eccentric shaft positioning tool according to claim 1, characterized in that: The base plate (41) is provided with an inner groove, in which a screw is rotatably installed. The screw passes through two front and rear symmetrical mounting plates (42) and is threadedly connected to the mounting plates (42). The directions of the threads on the screw are arranged in different directions with the symmetrical center line of the limiting cylinder (1) as the dividing line. One end of the screw is coaxially connected to a driving motor.
4. The eccentric shaft positioning tool according to claim 3, characterized in that: The maximum distance between the two mounting plates (42) is no greater than the structural length of the limiting column (3).
5. The eccentric shaft positioning tool according to claim 2, characterized in that: The depth of the clamping groove (9) is smaller than the distance between the slide groove (6) and the side wall of the limiting hole, and the slide groove (6) is T-shaped.
6. The eccentric shaft positioning tool according to claim 1, characterized in that: The preset installation hole (45) is provided with an internal thread, and the opening diameter of the docking hole is smaller than the opening diameter of the preset installation hole (45).