Clamp for bearing machining

Abstract

The utility model relates to the technical field of bearing machining, in particular to a clamp for bearing machining. Comprising a connecting flange detachably and fixedly connected with a machine tool machine head connecting disc, a plurality of clack springs are evenly and fixedly distributed on the circumference of the connecting flange, axial positioning parts and radial positioning parts are arranged on the clack springs, an axial pull rod is concentrically fixed in the machine tool machine head connecting disc, and the free end of the axial pull rod is connected with the middle of the connecting flange. A telescopic rod is concentrically fixed to the connecting flange, an elastic rod is fixed to the radial positioning component and tightly abuts against the small-diameter end of the bearing inner ring, one end of a pull rope is fixedly connected with the elastic rod, the other end of the pull rope is fixedly connected with the telescopic end of the telescopic rod, a blocking assembly corresponding to the pull rope is fixed to the fixed portion of the telescopic rod, and the pull rope winds around the blocking assembly. Under the elastic action of the elastic rod, the large-diameter end of the bearing inner ring can tightly abut against the end ejector rod, and the positioning precision of the bearing inner ring can be improved after the bearing inner ring is clamped.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of bearing processing technical field, specifically to a kind of clamp for bearing processing. BACKGROUND

[0002] The conical roller bearing with tapered bore can be easily installed and disassembled, and the bearing play can be fine-tuned. However, during the process of machining the inner raceway on the spring clamp, additional tooling is sometimes required, such as a bushing, which is the most important component. This type of bearing requires a bushing to support the installation and disassembly of each workpiece during the machining process. This processing method is complicated, inefficient, and has safety hazards during disassembly. Due to installation errors, the quality is difficult to guarantee.

[0003] The patent document with publication number CN216327574U discloses a tool clamp for the inner ring of a tapered roller bearing. The clamp includes a clamp body and an axial pull rod. The clamp body is composed of a connecting section and a positioning section arranged in sequence. The connecting section is detachably connected to the headstock connecting disc of the machine tool through fasteners. The positioning section includes multiple petal springs. Each petal spring has an axial positioning component and a radial positioning component on its outer side. When clamped and fixed, the axial positioning face on the axial positioning component abuts against the large end face of the bearing inner ring, and the radial positioning face on the radial positioning component abuts against the inner wall of the tapered hole under the action of the elasticity of the petal spring. The axial pull rod is detachably fixed to the inner end side wall of the inner cavity of the positioning section. When the pull rod applies a pulling force away from the positioning section, the petal spring on the positioning section contracts into the inner cavity of the positioning section and stores energy. When the pulling force of the pull rod disappears, the petal spring on the positioning section returns to its original position. The retraction of the piston rod of the hydraulic cylinder drives the pull rod to move away from the positioning section, providing an axial pulling force for the clamp body. The pull rod applies a pulling force to the inner end side of the inner cavity of the positioning section, and the petal spring contracts into the inner cavity of the positioning section, abutting the large end face of the bearing inner ring against the axial positioning face. The extension of the piston rod of the hydraulic cylinder drives the pull rod to return to its original position, and the petal spring expands, abutting the radial top face against the inner wall of the tapered hole of the bearing inner ring, completing the clamping and fixing. When clamping the bearing inner ring, the bearing inner ring cannot be pre-positioned in the axial direction, and manual pressing of the bearing inner ring is required to make the large diameter end of the bearing inner ring tightly abut against the bearing positioning rod, which is inconvenient. SUMMARY

[0004] The main purpose of the utility model is to provide a clamp for bearing processing that can pre-position the bearing inner ring in the axial direction before clamping the bearing inner ring, and accurately position the bearing inner ring after clamping.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a kind of bearing processing with fixture, including with machine tool head connecting disc detachable fixed connection's connecting flange, connecting flange has elasticity, the end surface of connecting flange towards machine tool head connecting disc is provided with ring groove, multiple petal springs are fixed on the circumference of connecting flange, axial positioning component and radial positioning component are arranged on petal spring, when clamping and fixing, axial positioning component is abutted with the large diameter end of bearing inner ring, radial positioning component is abutted with the inner wall of bearing inner ring;Axial pull rod is concentrically fixed in machine tool head connecting disc, the free end of axial pull rod is connected with the middle part of connecting flange, when axial pull rod deforms in the direction of machine tool head connecting disc, multiple petal springs gather and shrink and store energy when pulling connecting flange, when the pulling force of axial pull rod disappears, petal spring resets.

[0007] Connecting flange is fixed with telescopic rod concentrically, elastic rod is fixed on radial positioning component, and the small diameter end of elastic rod is abutted with the inner wall of bearing inner ring, one end of pull rope is fixedly connected with elastic rod, the other end of pull rope is fixedly connected with the telescopic end of telescopic rod, the fixed part of telescopic rod is fixed with the blocking assembly corresponding to pull rope, and pull rope is wound around the blocking assembly.

[0008] Specifically, the axial positioning component includes an axial flange fixed outside the petal spring, an end jack screw threadedly connected to the axial flange, an axis of the end jack screw being parallel to an axis of the connecting flange, and a locking nut threadedly connected to the end jack screw.

[0009] Specifically, the radial positioning component includes an inner jack screw threadedly connected to the petal spring, an axis of the inner jack screw being perpendicular to the axis of the connecting flange, and a locking nut threadedly connected to the inner jack screw.

[0010] Specifically, the axial pull rod includes a pneumatic cylinder, a cylinder body of the pneumatic cylinder being fixedly connected to the machine tool head connecting disc, and a movable rod of the pneumatic cylinder being fixedly connected to a baffle disc fixed to the connecting flange after penetrating through an inner hole of the connecting flange.

[0011] Specifically, the elastic rod includes a straight section, an upper inclined section, and a lower inclined section connected in sequence, the straight section being fixed to a side of the inner jack screw away from the connecting flange, and the end portions of the upper inclined section and the lower inclined section being inclined to the outside of the connecting flange.

[0012] Specifically, the blocking assembly includes a blocking rod fixed to the fixed part of the telescopic rod, a length direction of the blocking rod being parallel to an axial direction of the telescopic rod, an end of the blocking rod away from the fixed part of the telescopic rod being rotatably connected with a guide wheel, and the pull rope being wound around the guide wheel.

[0013] Specifically, the telescopic rod is concentrically fixed to the baffle disc.

[0014] Specifically, the machine tool head connecting disc and the connecting flange are fixedly connected by bolts and nuts.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. This clamp is equipped with multiple elastic rods, and the ends of the upper and lower inclined sections of the elastic rods are inclined towards the outside of the connecting flange. Before clamping the bearing inner ring, the bearing inner ring is sleeved on the outside of multiple leaf springs. After that, the bearing inner ring is simultaneously sleeved on the outside of multiple elastic rods, and the upper inclined section contacts the small diameter end of the bearing inner ring. Under the elastic force of the elastic rods, the large diameter end of the bearing inner ring can tightly abut the end rod. After clamping the bearing inner ring, the positioning accuracy of the bearing inner ring can be improved.

[0017] 2. By setting up a telescopic rod, a blocking component, and a pull rope, the elastic rod can be retracted to the inner side of the bearing inner ring, which can be used to cut the small diameter end of the bearing inner ring flat. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the fixture.

[0019] Figure 2 This is a front view of the fixture after it has clamped the inner ring of the bearing.

[0020] Figure 3 This is a schematic diagram showing the bearing inner ring clamped by this fixture.

[0021] Figure 4 for Figure 3 A magnified view of region A in the middle.

[0022] Figure 5 This is a side view of the fixture.

[0023] Figure 6 for Figure 5 Sectional view along the BB direction.

[0024] Figure 7 This is a schematic diagram of an elastic rod.

[0025] The components in the attached diagram are named as follows: 1. Machine tool head connecting plate, 2. Connecting flange, 3. Axial flange, 4. End ejector rod, 5. Leaf spring, 6. Inner ejector rod, 7. Elastic rod, 701. Straight section, 702. Upper inclined section, 703. Lower inclined section, 8. Cylinder, 9. Telescopic rod, 10. Stop rod, 11. Guide wheel, 12. Pull rope, 13. Bearing inner ring, 14. Stop plate, 15. Annular groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1: Refer to Figures 1-7As shown, a bearing machining fixture includes a connecting flange 2 that is detachably and fixedly connected to a machine tool head connecting plate 1. Specifically, the machine tool head connecting plate 1 and the connecting flange 2 are fixedly connected by bolts and nuts. When connecting the machine tool head connecting plate 1 and the connecting flange 2, the bolts pass through the holes on the machine tool head connecting plate 1 and the connecting flange 2, and then the nuts are threaded onto the bolts. Tightening the nuts will press the machine tool head connecting plate 1 and the connecting flange 2 together.

[0028] The connecting flange 2 is elastic, and an annular groove 15 is provided on the end face of the connecting flange 2 facing the machine tool head connecting plate 1. By providing the annular groove 15, space can be provided for the connecting flange 2 to deform in the direction of the machine tool head connecting plate 1.

[0029] Multiple leaf springs 5 ​​are evenly distributed and fixed on the circumference of the connecting flange 2. The leaf springs 5 ​​are equipped with axial positioning components and radial positioning components.

[0030] When clamped and fixed, the axial positioning component abuts against the large diameter end of the bearing inner ring 13, and the radial positioning component abuts against the inner wall of the bearing inner ring 13.

[0031] The axial tie rod is concentrically fixed inside the machine tool head connecting plate 1, and the free end of the axial tie rod is connected to the middle of the connecting flange 2. When the axial tie rod pulls the connecting flange 2 toward the machine tool head connecting plate, multiple leaf springs 5 ​​converge, contract, and store energy. When the tension of the axial tie rod on the connecting flange 2 disappears, the leaf springs 5 ​​return to their original position.

[0032] The axial positioning component includes an axial flange 3 fixed to the outside of the flap spring 5, an end rod 4 threadedly connected to the axial flange 3, the axis of the end rod 4 being parallel to the axis of the connecting flange 2, and a lock nut threadedly connected to the end rod 4.

[0033] The radial positioning component includes an inner push rod 6 that is threadedly connected to the flap spring 5. The axis of the inner push rod 6 is perpendicular to the axis of the connecting flange 2, and a lock nut is threadedly connected to the inner push rod 6.

[0034] The axial tie rod includes a cylinder 8. The cylinder body of the cylinder 8 is fixedly connected to the machine tool head connecting plate 1. The movable rod of the cylinder 8 passes through the inner hole of the connecting flange 2 and is fixedly connected to the baffle 14 fixed on the connecting flange 2.

[0035] When clamping the bearing inner ring 13, cylinder 8 is activated. The movable rod of cylinder 8 pulls the retaining plate 14 towards the machine tool head connecting plate 1. The connecting flange 2 deforms towards the machine tool head connecting plate 1, causing multiple leaf springs 5 ​​to converge and contract. Then, the bearing inner ring 13 is fitted onto the outside of the multiple leaf springs 5, so that the large-diameter end of the bearing inner ring 13 is tightly pressed against the multiple end push rods 4. Then, the movable rod of cylinder 8 is returned to its original position. After the movable rod of cylinder 8 returns to its original position, the connecting flange 2 returns to its original position, the multiple leaf springs 5 ​​return to their original position, and the inner push rod 6 presses tightly against the inner wall of the bearing inner ring 13, and the end push rod 4 presses tightly against the large-diameter end of the bearing inner ring 13. By rotating the end push rod 4, the position of the contact surface between the end push rod 4 and the large-diameter end of the bearing inner ring 13 can be adjusted, thereby adjusting the axial position of the bearing inner ring 13 after clamping. By rotating the inner push rod 6, the position of the contact surface between the inner push rod 6 and the inner wall of the bearing inner ring 13 can be adjusted, which is suitable for clamping bearing inner rings 13 of different diameters.

[0036] In this embodiment, in order to improve the positioning accuracy of the bearing inner ring 13, the bearing inner ring 13 needs to be manually stabilized before clamping so that the large diameter end of the bearing inner ring 13 is tightly against the end rod 4. Therefore, clamping the bearing inner ring 13 is inconvenient.

[0037] Example 2: Based on Example 1, referring to... Figures 1-7 As shown, an elastic rod 7 is fixed on the radial positioning component, and the elastic rod 7 is tightly pressed against the small diameter end of the inner ring 13 of the bearing.

[0038] The elastic rod 7 includes a straight section 701, an upper inclined section 702, and a lower inclined section 703 connected in sequence. The straight section 701 is fixed on the side of the inner top rod 6 away from the connecting flange 2. The ends of the upper inclined section 702 and the lower inclined section 703 that are connected are inclined towards the outside of the connecting flange 2.

[0039] In order to improve the positioning accuracy of the bearing inner ring 13 after it is clamped, and to enable the bearing inner ring 13 to automatically press against the end rod 4 before being clamped, multiple elastic rods 7 are set. Under the elastic force of the elastic rods 7, after the bearing inner ring 13 is sleeved on the outside of the multiple elastic rods 7, the bearing inner ring 13 can press against the end rod 4.

[0040] Specifically, by setting the downward inclined section 703, it is convenient to fit the bearing inner ring 13 onto the outside of multiple elastic rods 7.

[0041] Specifically, the end of the upper inclined section 702 and the lower inclined section 703 of the elastic rod 7 connected to each other is inclined to the outside of the connecting flange 2, before clamping the bearing inner ring 13, after the bearing inner ring 13 is sleeved outside the plurality of petal springs 5, the bearing inner ring 13 is sleeved outside the plurality of elastic rods 7, and the upper inclined section 702 is in contact with the small-diameter end of the bearing inner ring 13 and applies an axial force to the connecting flange 2 direction of the bearing inner ring 13, under the elastic force of the elastic rod 7, the large-diameter end of the bearing inner ring 13 can tightly abut against the end top rod 4, and after clamping the bearing inner ring 13, the positioning accuracy of the bearing inner ring 13 can be improved.

[0042] In the embodiment, since the upper inclined section 702 of the elastic rod 7 is in tight contact with the small-diameter end of the bearing inner ring 13, it is inconvenient to perform flat cutting on the small-diameter end of the bearing inner ring 13.

[0043] Example three: on the basis of example two, referring to Figures 1-7 As shown in the figure, the connecting flange 2 is concentrically fixed with a telescopic rod 9, and the telescopic rod 9 is concentrically fixed on the blocking disc 14. One end of the pull rope 12 is fixedly connected with the elastic rod 7, and the other end of the pull rope 12 is fixedly connected with the telescopic end of the telescopic rod 9. The fixed part of the telescopic rod 9 is fixed with a blocking assembly corresponding to the pull rope 12, and the pull rope 12 passes around the blocking assembly.

[0044] The blocking assembly comprises a blocking rod 10 fixed on the fixed part of the telescopic rod 9, the length direction of the blocking rod 10 is parallel to the axial direction of the telescopic rod 9, and the end of the blocking rod 10 away from the fixed part of the telescopic rod 9 is rotationally connected with a guide wheel 11, and the pull rope 12 passes around the guide wheel 11.

[0045] After the bearing inner ring 13 is clamped, the telescopic rod 9 is started, so that the telescopic end of the telescopic rod 9 is retracted, under the blocking action of the blocking rod 10 and the guide wheel 11, the pull rope 12 can make the elastic rod 7 elastically deform towards the center direction of the bearing inner ring 13, after the bearing inner ring 13 is clamped, it is convenient to perform flat cutting on the small-diameter end of the bearing inner ring 13, and it is convenient to trim the small-diameter end of the bearing inner ring 13.

[0046] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing machining clamp, comprising a connecting flange (2) detachably fixedly connected with a machine head connecting disc (1), the connecting flange (2) being elastic, an annular groove (15) being formed in an end face of the connecting flange (2) facing the machine head connecting disc (1), a plurality of petal springs (5) being fixedly arranged on the connecting flange (2) in a circumferential direction, the petal springs (5) being provided with axial positioning components and radial positioning components, when clamped and fixed, the axial positioning components abutting against a large-diameter end of a bearing inner ring (13), and the radial positioning components abutting against an inner wall of the bearing inner ring (13); an axial pull rod being concentrically fixed in the machine head connecting disc (1), a free end of the axial pull rod being connected with a middle portion of the connecting flange (2), when the axial pull rod deforms the connecting flange (2) in a direction of the machine head connecting disc, the plurality of petal springs (5) gather and contract and store energy, when the pulling force of the axial pull rod on the connecting flange (2) disappears, the petal springs (5) reset, characterized in that, A telescopic rod (9) is fixed concentrically on the connecting flange (2), an elastic rod (7) is fixed on the radial positioning component, the elastic rod (7) abuts against the small diameter end of the bearing inner ring (13), one end of a pull rope (12) is fixedly connected with the elastic rod (7), the other end of the pull rope (12) is fixedly connected with the telescopic end of the telescopic rod (9), the fixed part of the telescopic rod (9) is fixed with a blocking assembly corresponding to the pull rope (12), and the pull rope (12) passes through the blocking assembly.

2. The jig for machining a bearing according to claim 1, wherein The axial positioning component comprises an axial flange (3) fixed outside the clapper spring (5), and a end top rod (4) is threadedly connected to the axial flange (3), the axis of the end top rod (4) is parallel to the axis of the connecting flange (2), and a locking nut is threadedly connected to the end top rod (4).

3. The bearing machining jig according to claim 1, wherein The radial positioning component comprises an inner top rod (6) threadedly connected with the clapper spring (5), the axis of the inner top rod (6) is perpendicular to the axis of the connecting flange (2), and a locking nut is threadedly connected to the inner top rod (6).

4. The bearing machining jig according to claim 1, wherein The axial pull rod comprises a gas cylinder (8), the cylinder body of the gas cylinder (8) is fixedly connected with the machine tool head connecting disc (1), and the movable rod of the gas cylinder (8) is fixedly connected with a blocking disc (14) fixed on the connecting flange (2) after penetrating through the inner hole of the connecting flange (2).

5. The bearing machining jig according to claim 1, wherein The elastic rod (7) comprises a flat section (701), an upper inclined section (702) and a lower inclined section (703) connected in sequence, the flat section (701) is fixed on the side of the inner top rod (6) away from the connecting flange (2), and the end portions of the upper inclined section (702) and the lower inclined section (703) connected with each other are inclined to the outside of the connecting flange (2).

6. The bearing machining jig according to claim 1, wherein The blocking assembly comprises a blocking rod (10) fixed on the fixed part of the telescopic rod (9), the length direction of the blocking rod (10) is parallel to the axial direction of the telescopic rod (9), one end of the blocking rod (10) away from the fixed part of the telescopic rod (9) is rotatably connected with a guide wheel (11), and the pull rope (12) passes through the guide wheel (11).

7. The bearing machining jig according to claim 4, wherein The telescopic rod (9) is fixed concentrically on the blocking disc (14).

8. The bearing machining jig according to claim 1, wherein The machine tool head connecting disc (1) and the connecting flange (2) are fixedly connected through bolts and nuts.

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