Shaft sleeve press fitting mechanism

Abstract

The utility model relates to the technical field of shaft sleeve press fitting, in particular to a shaft sleeve press fitting mechanism. According to the technical scheme, the press-fitting positioning assembly comprises clamps, extension wedge blocks, resistance wedge blocks and resistance springs, the number of the clamps is two, the extension wedge blocks are fixedly installed on the two sides of each clamp, the inclined faces of the extension wedge blocks make contact with the resistance wedge blocks, and the resistance springs are elastically connected between the resistance wedge blocks and a lifting plate; a positioning plate is fixedly installed in the lifting plate and located on the moving path of the clamp. The clamps are connected with the lifting plate in a sliding mode, the two clamps clamp a workpiece shaft body, and the workpiece shaft body is sleeved with a shaft sleeve. Resistance is applied to the shaft sleeve through the inclined face of the extension wedge block and the elastic force of the resistance spring, the downward moving speed of the shaft sleeve is reduced, then the shaft sleeve is positioned through the positioning plate, and the situation that the shaft sleeve is pressed out of the preset position due to the fact that the shaft sleeve cannot stop moving in time when the shaft sleeve moves downwards too fast is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeve press-fitting, in particular to a shaft sleeve press-fitting mechanism. Background Art

[0002] Pressing sleeves refers to installing sleeves onto corresponding shafts. This process usually involves fitting the sleeves onto the shafts by pressure or other mechanical means to ensure a tight fit between them. Before pressing sleeves, the dimensional parameters of the shaft and sleeves must be prepared to ensure that they can fit correctly. In addition, it is necessary to confirm the availability of press-fitting equipment and tools and ensure that they are in good condition.

[0003] In the prior art, by selecting an appropriate press-fitting tool according to the size and shape of the sleeve and the shaft, the pressure applied to the sleeve is controlled to ensure that the sleeve is correctly installed at a predetermined position on the shaft.

[0004] However, when the sleeve pressing mechanism presses the sleeve, the friction between the sleeve and the shaft is not fixed, while the pressing force is fixed, and the pressing force may be much greater than the friction, causing the sleeve to be pressed beyond the predetermined position. Utility Model Content

[0005] The utility model aims to propose a shaft sleeve press-fitting mechanism in view of the problem that the shaft sleeve is pressed beyond a predetermined position in the background technology.

[0006] The technical solution of the utility model is: a shaft sleeve press-fitting mechanism, comprising:

[0007] A console, a buffer table is fixedly installed on the top of the console, and a top plate is fixedly installed on the top of the buffer table;

[0008] The position adjustment component includes a shifting component and a lifting plate. Two shifting components are provided and symmetrically arranged on the top of the console. The lifting plates are arranged on the opposite sides of the two shifting components.

[0009] A press-fit positioning assembly includes a clamp, an extension wedge, a resistance wedge and a resistance spring. Two clamps are provided. The extension wedges are fixedly installed on both sides of the clamp. The inclined surface of the extension wedge contacts the resistance wedge. The resistance spring is elastically connected between the resistance wedge and the lifting plate. A positioning plate is fixedly installed inside the lifting plate. The positioning plate is located on the moving path of the clamp.

[0010] The clamp is slidably connected to the lifting plate, and a workpiece shaft body is clamped by two clamps. A shaft sleeve is sleeved on the workpiece shaft body, and a press-fit assembly is arranged at the bottom of the top plate.

[0011] Optionally, the inclined surface of the extension wedge block and the inclined surface of the resistance wedge block have the same inclination angle, and the angle between the inclined surface and the horizontal plane is forty-five degrees.

[0012] Optionally, a sliding groove is provided inside the lifting plate, a positioning plate is fixedly installed in the sliding groove of the lifting plate, and the bottom of the resistance wedge block is slidably connected to the positioning plate.

[0013] Optionally, the fixture includes a fixture arc plate and a fixture slider, the fixture slider is fixedly installed on the outer arc surface of the fixture arc plate, the side of the fixture slider is slidably connected to the lifting plate, the two fixture arc plates clamp the workpiece shaft, and a buffer spring is elastically connected between the bottom of the fixture slider and the lifting plate.

[0014] Optionally, the shifting assembly includes an electric push rod, a buffer block, a screw and a lifting sleeve, wherein one end of the electric push rod is fixedly connected to the console, the other end of the electric push rod is fixedly connected to the buffer block, the interior of the buffer block is slidingly connected to the lifting sleeve, and the center of the lifting sleeve is threadedly connected to the screw rod.

[0015] Optionally, the side of the buffer block away from the electric push rod is fixedly connected to the lifting plate, the bottom of the buffer block is slidably connected to the control console, and the screw rod passes through the top of the buffer block.

[0016] Optionally, the press-fitting assembly includes a press-fitting push rod and a press-fitting plate, the top of the press-fitting push rod is fixedly connected to the top plate, and the bottom of the press-fitting push rod is fixedly connected to the press-fitting plate.

[0017] Optionally, a circular hole larger than the diameter of the workpiece shaft is opened at the center of the press plate, the press rod is misaligned with the circular hole, and the bottom of the press plate is in contact with the sleeve.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model utilizes the inclined surface of the extended wedge block and the elastic force of the resistance spring to apply resistance to the shaft sleeve, reduces the speed of the shaft sleeve moving downward, and then uses the positioning plate to position the shaft sleeve, thereby preventing the shaft sleeve from moving downward too fast and failing to stop moving in time, causing the shaft sleeve to be pressed beyond a predetermined position.

[0020] Furthermore, before the shaft sleeve approaches the position of the positioning plate, the downward movement speed is reduced, that is, the impact force is reduced, thereby avoiding the shaft sleeve and the positioning plate from colliding with each other to produce deformation, and reducing the vibration caused by the press-fitting of the shaft sleeve.

[0021] Furthermore, the screw rod can change the position of the lifting sleeve by rotating it by the operator, so that it drives the lifting plate to move up and down, thereby changing the position of the resistance wedge leg, that is, changing the positioning position of the sleeve to adapt to different sleeve press-fitting positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of an embodiment of the utility model is given;

[0023] Figure 2 A schematic cross-sectional view of a buffer table structure according to an embodiment of the utility model is given;

[0024] Figure 3 A half-section schematic diagram of the lifting plate structure of an embodiment of the utility model is given;

[0025] Figure 4 A schematic diagram of a front and cross-sectional view of a buffer block structure of an embodiment of the utility model is given;

[0026] Figure 5 A schematic front view of a press-fit plate structure according to an embodiment of the utility model is given.

[0027] Figure numerals: 1. control console; 2. buffer table; 3. top plate; 4. press-fit push rod; 5. press-fit plate; 6. position adjustment assembly; 61. electric push rod; 62. buffer block; 63. screw rod; 64. lifting sleeve; 65. lifting plate; 7. press-fit positioning assembly; 71. clamp arc plate; 72. clamp slider; 73. extension wedge; 74. buffer spring; 75. resistance wedge; 76. resistance spring; 77. positioning plate. DETAILED DESCRIPTION

[0028] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] This embodiment provides a shaft sleeve press-fitting mechanism, such as Figure 1 As shown, it comprises a control console 1 , a buffer table 2 is fixedly installed on the top of the control console 1 , a top plate 3 is fixedly installed on the top of the buffer table 2 , and a press-fit assembly is arranged at the bottom of the top plate 3 .

[0035] like Figure 5 As shown, the press-fitting assembly includes a press-fitting push rod 4 and a press-fitting plate 5 . The top of the press-fitting push rod 4 is fixedly connected to the top plate 3 , and the bottom of the press-fitting push rod 4 is fixedly connected to the press-fitting plate 5 .

[0036] A symmetrical position adjustment assembly 6 is arranged on the top of the console 1. The position adjustment assembly 6 includes a displacement assembly and a lifting plate 65. The lifting plate 65 is arranged on the side where the two displacement assemblies face each other.

[0037] like Figure 2 and 3 As shown, a positioning assembly 7 is press-fitted at the end of the lifting plate 65, including a clamp, an extension wedge block 73, a resistance wedge block 75 and a resistance spring 76. Two clamps are provided, and the two clamps clamp a workpiece shaft body, and a shaft sleeve is sleeved on the workpiece shaft body.

[0038] like Figure 5 As shown, a circular hole larger than the diameter of the workpiece shaft is opened at the center of the press plate 5, the press push rod 4 is misaligned with the circular hole, and the bottom of the press plate 5 contacts the sleeve. The workpiece shaft passes through the circular opening at the center of the press plate 5, and the press push rod 4 extends to move the press plate 5 downward to press the sleeve.

[0039] The extension wedge 73 is fixedly installed on both sides of the clamp, and the inclined surface of the extension wedge 73 and the inclined surface of the resistance wedge 75 have the same inclination angle, and the angle between the inclined surface and the horizontal plane of the clamp is 45 degrees. 40 degrees is used to calculate the resistance between the extension wedge 73 and the resistance wedge 75.

[0040] like Figure 3 As shown, the inclined surface of the extension wedge block 73 contacts the resistance wedge block 75, and the resistance spring 76 is elastically connected between the resistance wedge block 75 and the lifting plate 65; resistance is applied to the sleeve through the inclined surface of the extension wedge block 73 and the elastic force of the resistance spring 76, and when the sleeve approaches the predetermined position, the resistance is used to reduce its moving speed.

[0041] like Figure 3 As shown, the fixture includes a fixture arc plate 71 and a fixture slider 72. The fixture slider 72 is fixedly mounted on the outer arc surface of the fixture arc plate 71. The side of the fixture slider 72 is slidably connected to the lifting plate 65. The two fixture arc plates 71 clamp the workpiece shaft. The two sides of the fixture slider 72 are fixedly connected to the extension wedge 73. A buffer spring 74 is elastically connected between the bottom of the fixture slider 72 and the lifting plate 65. The positioning plate 77 is located on the downward movement path of the fixture slider 72. The buffer spring 74 serves as a buffer for the downward movement of the fixture.

[0042] A sliding groove is provided inside the lifting plate 65, and a positioning plate 77 is fixedly installed in the sliding groove of the lifting plate 65. The bottom of the resistance wedge block 75 is slidably connected to the positioning plate 77. The resistance wedge block 75 is supported by the positioning plate 77, and the positioning plate 77 serves as a positioning point. Before the sleeve moves to the positioning point, the inclined surface of the extension wedge block 73 and the elastic force of the resistance spring 76 are used to apply resistance to the sleeve, thereby reducing the movement speed of the sleeve, that is, reducing the impact force of the sleeve moving downward on the positioning plate 77, reducing the impact force of the press-fitting on the fixture, and preventing the fixture from deforming.

[0043] In this embodiment, the inclined surface of the extended wedge block 73 and the elastic force of the resistance spring 76 are used to apply resistance to the sleeve, thereby reducing the downward movement speed of the sleeve, that is, reducing the impact force of the sleeve moving downward, and then the positioning plate 77 is used to position the sleeve to avoid excessive impact force on the positioning plate 77 caused by the sleeve being pressed, causing the positioning plate 77 to deform and causing the sleeve to be pressed beyond the predetermined position, while reducing the vibration caused by the sleeve being pressed.

[0044] Example 2

[0045] Based on Example 1, this example proposes a shaft sleeve press-fitting mechanism, such as Figure 4As shown, the displacement assembly includes an electric push rod 61, a buffer block 62, a screw 63 and a lifting sleeve 64. The end of the electric push rod 61 is fixedly connected to the console 1, and the other end of the electric push rod 61 is fixedly connected to the buffer block 62. The interior of the buffer block 62 is slidably connected to the lifting sleeve 64, and the center of the lifting sleeve 64 is threadedly connected to the screw 63. By rotating the screw 63, the position of the lifting sleeve 64 can be changed to make it rise and fall.

[0046] like Figure 4 As shown, the side of the buffer block 62 away from the electric push rod 61 is fixedly connected to the lifting plate 65, and the bottom of the buffer block 62 is slidably connected to the console 1. When the sleeve is pressed, the buffer block 62 is supported on the top of the console 1 to prevent the end of the electric push rod 61 from being subjected to excessive force and being bent. The screw rod 63 passes through the top of the buffer block 62. When the lifting sleeve 64 is raised and lowered, the lifting plate 65 moves synchronously, which can change the position of the leg of the resistance wedge block 75 in the lifting plate 65, that is, change the positioning position of the sleeve to adapt to different press-fitting heights.

[0047] In this embodiment, the screw rod 63 can change the position of the lifting sleeve 64 through rotation by the operator, so that it drives the lifting plate 65 to move up and down, thereby changing the position of the leg of the resistance wedge block 75, that is, changing the positioning position of the sleeve to adapt to different sleeve press-fitting positions.

[0048] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A shaft sleeve press-fitting mechanism, characterized in that: include: A control console (1), a buffer table (2) being fixedly mounted on the top of the control console (1), and a top plate (3) being fixedly mounted on the top of the buffer table (2); A position adjustment component (6) comprises a shifting component and a lifting plate (65), wherein two shifting components are provided and symmetrically arranged on the top of the console (1), and the lifting plate (65) is provided on the opposite sides of the two shifting components; A press-fit positioning assembly (7), comprising a clamp, an extension wedge (73), a resistance wedge (75) and a resistance spring (76), wherein two clamps are provided, and the extension wedges (73) are fixedly installed on both sides of the clamp, the inclined surface of the extension wedge (73) contacts the resistance wedge (75), the resistance spring (76) is elastically connected between the resistance wedge (75) and the lifting plate (65), and a positioning plate (77) is fixedly installed inside the lifting plate (65), and the positioning plate (77) is located on the moving path of the clamp; The clamp is slidably connected to the lifting plate (65), and the two clamps clamp a workpiece shaft body, a shaft sleeve is sleeved on the workpiece shaft body, and a press-fit assembly is arranged at the bottom of the top plate (3).

2. A shaft sleeve press-fitting mechanism according to claim 1, characterized in that: The inclined surface of the extension wedge (73) and the inclined surface of the resistance wedge (75) have the same inclination angle, and the angle between the inclined surface and the horizontal plane is 45 degrees.

3. The shaft sleeve press-fitting mechanism according to claim 1, characterized in that: A sliding groove is provided inside the lifting plate (65), a positioning plate (77) is fixedly installed in the sliding groove of the lifting plate (65), and the bottom of the resistance wedge block (75) is slidably connected to the positioning plate (77).

4. The shaft sleeve press-fitting mechanism according to claim 1, characterized in that: The clamp comprises a clamp arc plate (71) and a clamp slider (72), the clamp slider (72) is fixedly installed on the outer arc surface of the clamp arc plate (71), the side of the clamp slider (72) is slidably connected to the lifting plate (65), the two clamp arc plates (71) clamp the workpiece axis, the two sides of the clamp slider (72) are fixedly connected to the extension wedge block (73), a buffer spring (74) is elastically connected between the bottom of the clamp slider (72) and the lifting plate (65), and the positioning plate (77) is located on the downward movement path of the clamp slider (72).

5. The shaft sleeve press-fitting mechanism according to claim 1, characterized in that: The displacement assembly comprises an electric push rod (61), a buffer block (62), a screw rod (63) and a lifting sleeve (64); the end of the electric push rod (61) is fixedly connected to the console (1); the other end of the electric push rod (61) is fixedly connected to the buffer block (62); the interior of the buffer block (62) is slidably connected to the lifting sleeve (64); the center of the lifting sleeve (64) is threadedly connected to the screw rod (63).

6. A shaft sleeve press-fitting mechanism according to claim 5, characterized in that: The side of the buffer block (62) away from the electric push rod (61) is fixedly connected to the lifting plate (65), the bottom of the buffer block (62) is slidably connected to the control console (1), and the screw rod (63) passes through the top of the buffer block (62).

7. The shaft sleeve press-fitting mechanism according to claim 1, characterized in that: The press-fitting assembly comprises a press-fitting push rod (4) and a press-fitting plate (5), wherein the top of the press-fitting push rod (4) is fixedly connected to the top plate (3), and the bottom of the press-fitting push rod (4) is fixedly connected to the press-fitting plate (5).

8. A shaft sleeve press-fitting mechanism according to claim 7, characterized in that: A circular hole larger than the diameter of the workpiece shaft is opened at the center of the press plate (5), the press push rod (4) is misaligned with the circular hole, and the bottom of the press plate (5) is in contact with the shaft sleeve.

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