Clamping mechanism for shaft sleeve machining

Abstract

The utility model discloses a clamping mechanism for shaft sleeve machining, which comprises a workbench, and a supporting seat and a power mechanism for driving the supporting seat to lift are arranged on the workbench; the supporting base is of a triangular-like structure, symmetrical bevel edges are arranged on the two sides of the supporting base, and a first supporting wheel is arranged above the supporting base. A swing arm is rotationally installed on the workbench, the lower ends of the two swing arms abut against the bevel edge of the supporting seat, a second supporting wheel is rotationally installed at the upper ends of the swing arms, and when the supporting seat ascends and descends, the lower ends of the two swing arms are close to or separated from each other along the bevel to drive the second supporting wheel at the upper end to be opened and closed. The rotation of the swing arm is controlled by the inclined surfaces on the two sides of the supporting seat, so that the second supporting wheel at the upper end of the swing arm realizes an opening and closing function, shaft sleeves of different specifications can be clamped, the universality is strong, and the operation is very convenient; the first air cylinder drives the movable base with the protruding part, lifting of the supporting base can be effectively controlled, and therefore the shaft sleeve clamping function is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bushing processing technology, and in particular to a clamping mechanism for bushing processing. Background Technology

[0002] A bushing is a cylindrical mechanical part that fits onto a rotating shaft and is a component of a sliding bearing. Generally, the bushing has an interference fit with the bearing housing and a clearance fit with the shaft. During the production and processing of bushings, operations such as drilling, grinding, and cutting are often required, all of which necessitate the use of fixtures to hold the bushing during processing.

[0003] Currently, most fixtures can only clamp and limit the surface of bushings of fixed sizes. The size of the clamping and limiting components cannot be adjusted for bushings of different diameters. It is necessary to replace the fixture with the corresponding size on the clamping base and then process the bushing of the corresponding size. This not only results in high processing costs but also in complicated operations. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a clamping mechanism for bushing processing, which can clamp bearings of different specifications and has strong versatility.

[0005] Therefore, the technical solution of this utility model is: a clamping mechanism for bushing processing, including a worktable, a support base on the worktable and a power mechanism for driving the support base to rise and fall; the support base is a triangular structure with symmetrical hypotenuses on both sides, and a first support wheel is provided above the support base; columns are mounted on both sides of the worktable, and a swing arm is rotatably mounted on the columns, the lower ends of the two swing arms abut against the hypotenuses of the support base through rollers, and a tension spring is connected to the lower ends of the two swing arms; a second support wheel is rotatably mounted on the upper end of the swing arm, and is on the same circular trajectory as the first support wheel; when the support base rises and falls, the lower ends of the two swing arms approach or separate along the hypotenuse, driving the second support wheel at the upper end to open and close.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the power mechanism includes a movable block that can be translated, the upper end surface of the movable block is provided with a first protrusion, the lower end surface of the support base abuts against the upper end surface of the movable block, and when the movable block moves, the first protrusion can push the support base to move upward.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the lower end face of the support base is provided with a downwardly protruding second protrusion, which works in conjunction with the first protrusion.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the power mechanism further includes a first slide rail that matches the moving block, and a first cylinder that drives the moving block to move.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the workbench is provided with a vertically arranged second sliding rail, and the rear side of the support base is provided with a sliding block matched with the second sliding rail.

[0010] In the initial state, the moving block is located at the outermost side, the first protruding part is not in contact with the support base, the support base is located at the lowest position, the contact points of the two side swing arms with the support base are relatively high, and the lower ends of the two side swing arms are relatively close, so that the second support wheels at the upper ends of the corresponding swing arms are in an open state.

[0011] In the clamping state, the shaft sleeve is placed between the first support wheel and the second support wheel, the shaft sleeve is in a loose state at this time, the first cylinder is started, the first cylinder drives the moving block to move along the first sliding rail, the first protruding part on the moving block moves to the lower side of the support base, the support base is lifted, the lower end rollers of the two side swing arms move downward relative to the inclined surface of the support base, the distance between the lower ends of the two side swing arms is increased, and the second support wheels at the upper ends are in a closed state, so that the shaft sleeve is clamped, and subsequent machining of the shaft sleeve is facilitated.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The two inclined surfaces of the support base are used to control the rotation of the swing arm, the second support wheel at the upper end of the swing arm realizes the opening and closing function, different specifications of shaft sleeves can be clamped, the universality is high, and the operation is very convenient; the moving seat with the protruding part is driven by the first cylinder, the lifting of the support base can be effectively controlled, and the clamping function of the shaft sleeve is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a clamping state schematic view of the utility model;

[0016] Figure 3 It is an initial state schematic view of the utility model.

[0017] In the drawing, it is marked as: workbench 1, support base 2, second protruding part 21, moving block 3, first protruding part 31, first sliding rail 4, first cylinder 5, first support wheel 6, second sliding rail 7, swing arm 8, roller 81, tension spring 9, second support wheel 10, stand 11 and shaft sleeve 12. DETAILED DESCRIPTION

[0018] In the description of the utility model, it is necessary to explain that, for the direction words, if the terms 'center', 'transverse (X)', 'longitudinal (Y)','vertical (Z)', 'length', 'width', 'thickness', 'upper', 'lower', 'front','rear', 'left', 'right','vertical', 'horizontal', 'top', 'bottom', 'inner', 'outer', 'clockwise', 'counterclockwise' and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of narrating the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0019] In addition, if the terms 'first','second' are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the 'first','second' features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of'several','several' is two or more than two, unless otherwise explicitly limited.

[0020] Referring to the drawings. The shaft sleeve machining clamping mechanism described in the embodiment, including workbench 1, workbench 1 is equipped with a support seat 2 and the power mechanism of driving support seat 2 to lift;The power mechanism includes a movable block 3, a first slide rail 4 matched with the movable block, and a first cylinder 5 for driving the movable block to move. The upper end surface of the movable block 3 is provided with a first protruding part 31, the lower end surface of the support seat 2 is abutted with the upper end surface of the movable block 3, and the first protruding part 31 can push the support seat 2 to move up when the movable block 3 moves. The lower end surface of the support seat 2 is provided with a second protruding part 21 protruding downward, and the second protruding part 21 cooperates with the first protruding part 31 to better realize the lifting effect.

[0021] The support seat 2 is a triangular structure, and the two sides are provided with symmetrical inclined edges, and the upper side of the support seat 2 is provided with a first support wheel 6;The workbench 1 is provided with a second slide rail 7 vertically arranged, and the rear side of the support seat 2 is provided with a sliding block matched with the second slide rail 7, and the support seat 2 can move up and down along the second slide rail 7.

[0022] The workbench 1 is provided with a stand column 11 on both sides, a swing arm 8 is rotatably installed on the stand column 11, the lower ends of the two swing arms 8 are abutted on the inclined edges of the support seat 2 through rollers 81, and the lower ends of the two swing arms 8 are connected with a tension spring 9, and the upper end of the swing arm 8 is rotatably installed with a second support wheel 10, which is on the same circular track with the first support wheel 6;When the support seat 2 lifts, the lower ends of the two swing arms 8 approach or separate along the inclined surface, and drive the second support wheel 10 at the upper end to open and close.

[0023] In the initial state, the moving block 3 is located at the outermost side, the first protruding part 31 is not in contact with the support seat 2, at this time, the support seat 2 is located at the lowest position, the contact points of the two side swing arms 8 with the support seat 2 are relatively high, and the lower ends of the two side swing arms 8 are relatively close, so that the second support wheels 10 at the upper ends of the corresponding swing arms 8 are in the open state.

[0024] In the clamping state, the shaft sleeve 12 is placed between the first support wheel 6 and the second support wheel 10, at this time, the shaft sleeve 12 is in a loose state, the first cylinder 5 is started, the first cylinder 5 drives the moving block 3 to move along the first sliding rail 4, the first protruding part 31 on the moving block 3 moves to the lower side of the support seat 2, the support seat 2 is lifted, the lower end rollers 81 of the two side swing arms 8 are lowered relative to the inclined surface of the support seat 2, the distance between the lower ends of the two side swing arms 8 is increased, the second support wheels 10 at the upper ends of the two side swing arms 8 are in the closed state, and the shaft sleeve 12 is clamped, so that the shaft sleeve 12 is convenient for subsequent processing.

[0025] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not only limited to the above-mentioned embodiments, any technical scheme belonging to the utility model idea is within the protection scope of the utility model. It should be noted that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the utility model are also considered as the protection scope of the utility model.

Claims

1. A clamping mechanism for machining a bushing, characterized by: The utility model provides a kind of workbench, workbench is equipped with a support seat and the power mechanism of driving support seat to lift;The support seat is triangular structure, and two sides are equipped with symmetrical bevel, and first support wheel is equipped on the upper side of support seat;Two columns are erected on the two sides of workbench, and a swing arm is rotatably installed on the column, and the lower end of two swing arms is supported on the bevel of support seat by roller, and the lower end of two swing arms is connected with a tension spring, and the upper end of swing arm is rotatably installed with second support wheel, and with first support wheel on the same circular track;When support seat lifts, the lower end of two swing arms is close or separate along bevel, and the second support wheel of upper end is driven to open and close.

2. The chucking mechanism for machining a bushing according to claim 1, characterized in that: The power mechanism includes a movable block, and the upper end surface of the movable block is provided with a first protruding part, and the lower end surface of the support seat is in contact with the upper end surface of the movable block, so that the first protruding part can push the support seat upward when the movable block moves.

3. The chucking mechanism for machining a bushing according to claim 2, characterized in that: The lower end surface of the support seat is provided with a second protruding part protruding downward, and the second protruding part works with the first protruding part.

4. The chucking mechanism for machining a bushing as set forth in claim 2, wherein: The power mechanism further includes a first sliding rail matched with the movable block and a first air cylinder for moving the movable block.

5. The chucking mechanism for machining a bushing as set forth in claim 1, wherein: The workbench is provided with a second sliding rail arranged vertically, and the rear side of the support seat is provided with a sliding block matched with the second sliding rail.

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