A positioning fixture for machining bearing rings

Abstract

This utility model relates to the field of bearing ring processing technology, and provides a positioning fixture for bearing ring processing, including a placement plate. A positioning mechanism is fixedly connected to the top of the placement plate. The positioning mechanism includes a housing fixedly installed on the top of the placement plate. A threaded rod is movably connected inside the housing. A movable block is movably connected to one end of the threaded rod. A movable rod is movably connected to the outer wall of the movable block. A clamping plate is fixedly connected to the outer wall of the movable rod. A limiting plate is fixedly connected to one end of the movable rod. A handwheel is fixedly connected to the top of the threaded rod. This utility model allows the bearing ring to be placed on the placement plate and fitted onto the outer wall of the housing. Rotating the handwheel moves the movable block, which presses against one end of the movable rod, causing the limiting plate to press and limit the inner wall of the bearing ring, thus facilitating the positioning of bearing rings of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of bearing ring processing technology, and in particular to a positioning fixture for bearing ring processing. Background Technology

[0002] A bearing race is a ring-shaped mechanical part, typically composed of an inner ring and an outer ring, with one or more raceways. The inner ring generally fits tightly with the shaft and rotates with it; its raceway is located on the outer surface. The outer ring usually fits with the bearing housing bore or the shell of the mechanical component, providing support; its raceway is located on the inner surface. In special types of bearings, such as tapered roller bearings, there are raceways with special structures such as tapered inner rings and tapered outer rings, where the raceway is a tapered surface. Positioning fixtures are required when machining bearing raceways.

[0003] To this end, patent CN214186576U discloses a positioning device for processing bearing rings, including a worktable, positioning components, and a special-shaped support plate. Support legs are provided on the lower side of the worktable, and several positioning components are provided on the upper side of the worktable, distributed at equal angles. Each positioning component includes an electric telescopic mechanism, a fixed plate, a first telescopic rod, and an arc-shaped clamping block. The fixed plate is fixedly installed on the upper side of the worktable, and the electric telescopic mechanism is located outside the fixed plate. The electric telescopic mechanism is connected to the first telescopic rod, and an arc-shaped clamping block is installed at the top of the first telescopic rod. A special-shaped through groove is provided in the middle of the worktable, and a hydraulic cylinder is provided below the through groove. The hydraulic cylinder is fixedly connected to the worktable through fixed supports arranged around it. A second telescopic rod is provided above the hydraulic cylinder, and a special-shaped support plate is provided above the second telescopic rod. This utility model has advantages such as simple structure, convenient use, good positioning effect, adjustable positioning height of the bearing rings, and ease of subsequent processing.

[0004] The existing technical solutions mentioned above have the following drawbacks: four arc-shaped clamping blocks are used to clamp and position the bearing rings, but the curvature of the arc-shaped clamping blocks is fixed, so they cannot be applied to bearing rings of different sizes. Furthermore, the use of external extrusion limiting makes it impossible to polish the outer wall of the bearing rings, affecting their practical applicability. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for machining bearing rings, so as to solve the defect of existing positioning fixtures for machining bearing rings that are inconvenient for positioning bearing rings of different sizes.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a positioning fixture for machining bearing rings, including a storage plate;

[0007] A positioning mechanism is fixedly connected to the top of the shelf;

[0008] The positioning mechanism includes a housing fixedly installed on the top of the shelf. A threaded rod is movably connected inside the housing. A movable block is movably connected to one end of the threaded rod. A movable rod is movably connected to the outer wall of the movable block. A clamping plate is fixedly connected to the outer wall of the movable rod. A limit plate is fixedly connected to one end of the movable rod. A handwheel is fixedly connected to the top end of the threaded rod.

[0009] Preferably, a guide rod is fixedly connected to one side of the limiting plate, a threaded groove is provided inside the outer shell, and a limiting rod is fixedly connected to the top of the movable block.

[0010] Preferably, the guide rod and the outer shell form a sliding structure, the guide rod and the movable rod are arranged in parallel, the guide rod and the outer shell form a sliding structure, and the outer shell has a slotted design.

[0011] Preferably, the outer casing is threadedly connected to the threaded rod via a threaded groove, the handwheel forms a rotating structure with the outer casing via the threaded rod, and the movable block has a slotted design, forming a rotating structure with the threaded rod.

[0012] Preferably, the outer shell and the limiting rod form a sliding structure, and a spring is fixedly connected to one side of the card plate, and the spring is sleeved on the outer wall of the movable rod.

[0013] Preferably, an auxiliary limiting mechanism is installed on the outer wall of the limiting plate. The auxiliary limiting mechanism includes a slide groove opened inside the limiting plate, a slider is movably connected inside the slide groove, a return spring is fixedly connected to the top of the slider, a frame plate is fixedly connected to the outer wall of the slider, and a roller is movably connected to the inner wall of the frame plate.

[0014] Preferably, the limiting plate forms a sliding structure with the slider via a groove, and the frame plate forms a rotating structure with the roller via a rotating shaft.

[0015] The positioning fixture for machining bearing rings provided by this utility model has the following advantages:

[0016] With the set placement plate, positioning mechanism and handwheel, by placing the bearing ring on the placement plate and fitting it on the outer wall of the housing, turning the handwheel can rotate the threaded rod. Since the threaded rod is threadedly connected to the housing through the threaded groove, the movable block connected to one end of the threaded rod can be moved, so that the movable block squeezes one end of the movable rod, so that the movable rod slides out along the housing, driving the limiting plate to squeeze and limit the inner wall of the bearing ring, which can facilitate the positioning of bearing rings of different sizes.

[0017] Furthermore, under the action of the limiting rod and the guide rod, the movable block and the limiting plate can move stably along the outer shell, further improving the stability of the bearing ring limiting.

[0018] Furthermore, since a spring is fixedly connected to one side of the card plate and the spring is sleeved on the outer wall of the movable rod, the limit plates at each position can be reset when the movable block is raised by turning the handwheel, thus improving the ease of use.

[0019] By setting a limiting plate and an auxiliary limiting mechanism, the movement of the limiting plate can cause the roller to first contact the upper edge of the inner wall of the bearing ring as the limiting plate approaches the inner wall of the bearing ring. As the limiting plate continues to move, the inner wall of the bearing ring is pressed against the lower part of the roller's central axis, causing the roller to rotate along the frame plate and apply an upward force to the frame plate, which in turn causes the slider to slide along the groove. This allows the positioning device to be applicable to bearing rings of different sizes.

[0020] Furthermore, under the action of the return spring, the roller can assist in pressing down on the top of the bearing ring, further improving the stability of the bearing ring positioning. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a perspective view of the shelf of this utility model;

[0023] Figure 3 This is a three-dimensional sectional view of the outer shell of this utility model;

[0024] Figure 4 This is a front view schematic diagram of the positioning mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram showing the disassembled structure of the limiting plate of this utility model.

[0026] The following are the annotations in the figure: 1. Shelf plate; 2. Positioning mechanism; 21. Outer shell; 22. Threaded rod; 23. Movable block; 24. Movable rod; 25. Clamping plate; 26. Limiting plate; 27. Guide rod; 28. Threaded groove; 29. ​​Limiting rod; 3. Handwheel; 4. Auxiliary limiting mechanism; 41. Slide groove; 42. Slider; 43. Return spring; 44. Frame plate; 45. Roller. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5The present invention provides a positioning fixture for machining bearing rings, including a storage plate 1.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a positioning mechanism 2 is fixedly connected to the top of the shelf 1. The positioning mechanism 2 includes a housing 21 fixedly installed on the top of the shelf 1. A threaded rod 22 is movably connected inside the housing 21. A movable block 23 is movably connected to one end of the threaded rod 22. A movable rod 24 is movably connected to the outer wall of the movable block 23. A retaining plate 25 is fixedly connected to the outer wall of the movable rod 24. A limiting plate 26 is fixedly connected to one end of the movable rod 24. A handwheel 3 is fixedly connected to the top of the threaded rod 22. A guide rod 27 is fixedly connected to one side of the limiting plate 26. A threaded groove 28 is opened inside the housing 21. The movable block 23... The top is fixedly connected to a limiting rod 29. The guide rod 27 and the outer shell 21 form a sliding structure. The guide rod 27 and the movable rod 24 are arranged in parallel. The guide rod 27 and the outer shell 21 form a sliding structure. The outer shell 21 has a slotted design. The outer shell 21 is threadedly connected to the threaded rod 22 through the threaded groove 28. The handwheel 3 forms a rotating structure with the outer shell 21 through the threaded rod 22. The movable block 23 has a slotted design. The movable block 23 and the threaded rod 22 form a rotating structure. The outer shell 21 and the limiting rod 29 form a sliding structure. A spring is fixedly connected to one side of the clamping plate 25, and the spring is sleeved on the outer wall of the movable rod 24.

[0030] By placing the bearing ring on the shelf 1 and fitting it onto the outer wall of the housing 21, turning the handwheel 3 can rotate the threaded rod 22. Since the threaded rod 22 is threadedly connected to the housing 21 through the threaded groove 28, the movable block 23 connected to one end of the threaded rod 22 can be moved, causing the movable block 23 to press against one end of the movable rod 24, causing the movable rod 24 to slide out along the housing 21, thereby driving the limiting plate 26 to press and limit the inner wall of the bearing ring.

[0031] Reference Figure 4 and Figure 5 As shown, an auxiliary limiting mechanism 4 is installed on the outer wall of the limiting plate 26. The auxiliary limiting mechanism 4 includes a slide groove 41 opened inside the limiting plate 26. A slider 42 is movably connected inside the slide groove 41. A return spring 43 is fixedly connected to the top of the slider 42. A frame plate 44 is fixedly connected to the outer wall of the slider 42. A roller 45 is movably connected to the inner wall of the frame plate 44. The limiting plate 26 forms a sliding structure with the slider 42 through the slide groove 41. The frame plate 44 forms a rotating structure with the roller 45 through the rotating shaft.

[0032] As the limiting plate 26 moves, it approaches the inner wall of the bearing ring, causing the roller 45 to first contact the upper edge of the inner wall of the bearing ring. As the limiting plate 26 continues to move, it causes the inner wall of the bearing ring to press against the lower part of the central axis of the roller 45, causing the roller 45 to rotate along the frame plate 44 and apply an upward force to the frame plate 44, causing the slider 42 to slide along the slide groove 41. Under the action of the return spring 43, the roller 45 can assist in pressing down on the top of the bearing ring. When the bearing ring is placed on the shelf plate 1 and its height exceeds the central axis of the roller 45, the roller 45 needs to be manually raised for auxiliary limiting.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning fixture for machining bearing rings, comprising a storage plate (1); Its features are: The top of the shelf (1) is fixedly connected to a positioning mechanism (2); The positioning mechanism (2) includes a housing (21) fixedly installed on the top of the shelf (1). A threaded rod (22) is movably connected inside the housing (21). A movable block (23) is movably connected to one end of the threaded rod (22). A movable rod (24) is movably connected to the outer wall of the movable block (23). A clamping plate (25) is fixedly connected to the outer wall of the movable rod (24). A limit plate (26) is fixedly connected to one end of the movable rod (24). A handwheel (3) is fixedly connected to the top of the threaded rod (22).

2. The positioning tool for machining a bearing ring according to claim 1, characterized in that: A guide rod (27) is fixedly connected to one side of the limiting plate (26), a threaded groove (28) is provided inside the outer shell (21), and a limiting rod (29) is fixedly connected to the top of the movable block (23).

3. The positioning tool for machining a bearing ring according to claim 2, characterized in that: The guide rod (27) and the outer shell (21) form a sliding structure. The guide rod (27) and the movable rod (24) are arranged in parallel. The guide rod (27) and the outer shell (21) form a sliding structure. The outer shell (21) has a slotted design.

4. The positioning tool for machining a bearing ring according to claim 2, characterized in that: The outer shell (21) is threadedly connected to the threaded rod (22) through the threaded groove (28). The handwheel (3) forms a rotating structure with the outer shell (21) through the threaded rod (22). The movable block (23) is a slotted design. The movable block (23) and the threaded rod (22) form a rotating structure.

5. The positioning tool for machining a bearing ring according to claim 1, characterized in that: The outer shell (21) and the limiting rod (29) form a sliding structure. A spring is fixedly connected to one side of the card plate (25), and the spring is sleeved on the outer wall of the movable rod (24).

6. The positioning tool for machining a bearing ring according to claim 1, characterized in that: An auxiliary limiting mechanism (4) is installed on the outer wall of the limiting plate (26). The auxiliary limiting mechanism (4) includes a slide groove (41) opened inside the limiting plate (26). A slider (42) is movably connected inside the slide groove (41). A return spring (43) is fixedly connected to the top of the slider (42). A frame plate (44) is fixedly connected to the outer wall of the slider (42). A roller (45) is movably connected to the inner wall of the frame plate (44).

7. The positioning tool for machining a bearing ring according to claim 6, characterized in that: The limiting plate (26) forms a sliding structure with the slider (42) through the sliding groove (41), and the frame plate (44) forms a rotating structure with the roller (45) through the rotating shaft.

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