Positioning clamp for machining outer ring of ball screw bearing

Abstract

The utility model discloses a positioning clamp for machining a ball screw bearing outer ring. The positioning clamp comprises a hollow cylindrical outer shell. The positioning clamp comprises a hollow cylindrical outer shell, a cylindrical positioning groove is formed in the hollow cylindrical outer shell, a built-in clamp is connected into the cylindrical positioning groove in a sliding mode, a first electric control telescopic rod is installed at the end of the built-in clamp, and the first electric control telescopic rod is connected with the outer side face of the hollow cylindrical outer shell through a positioning support. The device can be used for fixing ball screw bearing outer rings of various different sizes, the bearing outer rings can be firmly fixed through clamping and jacking, and meanwhile the positions of the bearing outer rings can be adjusted according to machining requirements; when the outer ring of the ball screw bearing is clamped, the motor drives the rotating disc to rotate through the bevel gear, the rotating disc drives the three sliding blocks to move synchronously through the spiral involute teeth, and the sliding blocks drive the external clamping plates to clamp the outer ring of the bearing.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures for machining outer rings of bearings, and in particular to a positioning fixture for machining outer rings of ball screw bearings. Background Art

[0002] Since the outer ring of the ball screw bearing has a step, more than two sets of fixtures are needed when processing the outer ring of the ball screw bearing. One set of fixtures is used to fix the outer ring of the ball screw bearing when processing the outer surface or internal roller of the outer ring of the ball screw bearing. At this time, after the outer ring of the bearing is fixed on the fixture, its position cannot be adjusted, and the outer ring roller processing and outer ring cutting cannot be carried out simultaneously; the other set of fixtures is used for the drilling process of the steps of the outer ring of the bearing. Specifically, during processing, a conveying device is needed to transport the outer ring of the ball screw bearing to different processing stations, which is not only time-consuming and labor-intensive, but also has low processing efficiency. At the same time, the existing fixtures for processing the outer ring of the bearing have a small scope of application. Summary of the invention

[0003] The present application provides a positioning fixture for processing the outer ring of a ball screw bearing, which can be used to fix the outer rings of ball screw bearings of various sizes. By means of outer clamping and inner pushing, the outer ring of the bearing is firmly fixed. At the same time, the position of the outer ring of the bearing can be adjusted according to processing needs, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a positioning fixture for processing the outer ring of a ball screw bearing, comprising a hollow cylindrical outer shell; a cylindrical positioning groove is provided inside the hollow cylindrical outer shell, and a built-in fixture is slidably connected inside the cylindrical positioning groove, and an electrically controlled telescopic rod is installed at the end of the built-in fixture, and the electrically controlled telescopic rod is connected to the outer side surface of the hollow cylindrical outer shell through a positioning bracket.

[0005] The left side of the hollow cylindrical outer shell is evenly distributed with at least one slide groove 1, and an external clamping plate is slidably connected in the slide groove 1. An inner cylinder body 1 is provided inside the hollow cylindrical outer shell, and an inner cylinder body 2 is provided inside the inner cylinder body 1. An annular groove is provided at the lower end of the outer side surface of the inner cylinder body 1, and a turntable is installed in the annular groove. The two side surfaces of the turntable are respectively provided with bevel teeth and spiral involute teeth. A motor is provided at the bottom edge of the inner side surface of the hollow cylindrical outer shell, and the output shaft of the motor is connected with a bevel gear, which meshes with the bevel gear. A slide groove 2 is provided at the bottom of the inner side surface of the hollow cylindrical outer shell, and a slider 1 is slidably connected on the slide groove 2. The slider 1 is connected to the external clamping plate, and the outer side surface of the slider 1 is provided with an arc groove that is engaged with the spiral involute teeth.

[0006] Preferably, gears and annular brushes are installed on the outer side of the hollow cylindrical outer shell.

[0007] Preferably, the central axes of the inner cylinder 1, the inner cylinder 2 and the hollow cylindrical outer shell coincide with each other.

[0008] Preferably, the built-in clamp comprises a cylindrical outer shell, the outer side surface of the cylindrical outer shell is connected to the telescopic end of the electric-controlled telescopic rod 1, an inner end of the cylindrical outer shell is provided with an electric-controlled telescopic rod 2, the telescopic end of the electric-controlled telescopic rod 2 is connected with a connecting rod 3, both ends of the connecting rod 3 are rotatably connected to the connecting rod 2, the end of the connecting rod 2 is rotatably connected to the connecting rod 1, the end of the connecting rod 1 is fixedly connected with a fan-shaped tooth, and the fan-shaped tooth is rotatably connected to the cylindrical outer shell through a pin shaft, a slide rail is provided inside the cylindrical outer shell, and two symmetrically arranged sliders 2 are slidably connected to the slide rail, a rack is provided on the outer side surface of the slider 2, the rack is meshed with the fan-shaped teeth, and an inner top plate is installed on the outer side surface of the slider 2, and the inner top plate is arranged through a strip groove arranged on the outer side surface of the cylindrical outer shell.

[0009] Compared with the prior art, the beneficial effects of this application are:

[0010] 1. This positioning fixture for ball screw bearing outer ring processing can be used to fix the outer rings of ball screw bearings of various sizes. By clamping outside and pushing inside, the outer ring of the bearing is firmly fixed. At the same time, the position of the outer ring of the bearing can be adjusted according to processing needs;

[0011] 2. When clamping the outer ring of the ball screw bearing, the motor drives the turntable to rotate through the bevel gear, and the turntable drives the three sliders to move synchronously through the spiral involute teeth, and the slider drives the external clamping plate to clamp the outer ring of the bearing;

[0012] 3. When clamping the outer ring of the bearing, place the outer ring of the bearing close to the outer side of the cylindrical outer shell, and ensure that the inner top plate can be located inside the outer ring of the bearing. The electric control telescopic rod 2 drives the connecting rod 2 to move through the connecting rod 3. The connecting rod 2 drives the fan-shaped teeth to rotate through the connecting rod 1. The fan-shaped teeth drive the slider to slide along the slide rail through the rack. Finally, the inner top plate set on the slider supports and positions the outer ring of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of this application;

[0014] Figure 2 This is the main view of this application;

[0015] Figure 3 This is the left view of this application;

[0016] Figure 4 Schematic diagram of the internal structure of the hollow cylindrical outer shell;

[0017] Figure 5 It is a schematic diagram of the external structure of the hollow cylindrical outer shell;

[0018] Figure 6 This is a schematic diagram of the front structure of the turntable;

[0019] Figure 7 This is a schematic diagram of the reverse structure of the turntable;

[0020] Figure 8 It is a schematic diagram of the internal structure of the built-in fixture;

[0021] Fig. 9 It is a schematic diagram of the structure of the external splint.

[0022] In the figure: 1 hollow cylindrical outer shell, 2 gears, 3 positioning bracket, 4 electric control telescopic rod 1, 5 slide groove 1, 6 cylindrical positioning groove, 7 external clamp, 8 built-in fixture, 11 inner cylinder 1, 12 slider 1, 13 bevel gear, 14 motor, 15 slide groove 2, 16 inner cylinder 2, 17 annular groove, 18 turntable, 19 bevel gear, 20 spiral involute gear, 81 inner top plate, 82 slider 2, 83 slide rail, 84 fan-shaped gear, 85 rack, 86 connecting rod 1, 87 cylindrical outer shell, 88 connecting rod 2, 89 electric control telescopic rod 2, 810 connecting rod 3, 811 pin, 812 strip groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 2 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0025] See also Figure 1-9 The present application provides the following technical solutions: a positioning fixture for processing the outer ring of a ball screw bearing, comprising a hollow cylindrical outer shell 1; a cylindrical positioning groove 6 is provided inside the hollow cylindrical outer shell 1, and a built-in fixture 8 is slidably connected inside the cylindrical positioning groove 6, and an electric-controlled telescopic rod 4 is installed at the end of the built-in fixture 8, and the electric-controlled telescopic rod 4 is connected to the outer side surface of the hollow cylindrical outer shell 1 through a positioning bracket 3.

[0026] Specifically, the outer ring of the ball screw bearing to be processed is placed into the cylindrical positioning groove 6, the outer ring of the ball screw bearing is clamped by a clamp set on the hollow cylindrical outer shell 1, and then the inner ring of the ball screw bearing is supported and fixed by the built-in clamp 8.

[0027] The left side of the hollow cylindrical outer shell 1 is evenly distributed with at least one slide groove 5 in an annular shape, and an external clamping plate 7 is slidably connected in the slide groove 5. An inner cylinder 11 is provided inside the hollow cylindrical outer shell 1, and an inner cylinder 2 16 is provided inside the inner cylinder 11. An annular groove 17 is provided at the lower end of the outer side surface of the inner cylinder 11, and a turntable 18 is installed in the annular groove 17. The two sides of the turntable 18 are respectively provided with bevel teeth 19 and spiral involute teeth 20. A motor 14 is provided at the bottom edge of the inner side surface of the hollow cylindrical outer shell 1, and the output shaft of the motor 14 is connected to a bevel gear 13, which meshes with the bevel gear 19. A slide groove 2 15 is provided at the bottom of the inner side surface of the hollow cylindrical outer shell 1, and a slider 12 is slidably connected to the slide groove 25. The slider 12 is connected to the external clamping plate 7, and the outer side surface of the slider 12 is provided with an arc groove that is snap-fitted with the spiral involute teeth 20.

[0028] Specifically, when clamping the outer ring of the ball screw bearing, the motor 14 drives the turntable 18 to rotate through the bevel gear 13, the turntable 18 drives the three sliders 12 to move synchronously through the spiral involute teeth 20, and the slider 12 drives the external clamping plate 7 to clamp the outer ring of the bearing.

[0029] Furthermore, a gear 2 and an annular brush are installed on the outer side of the hollow cylindrical outer shell 1.

[0030] Specifically, the annular brush is used to supply power to electrical equipment.

[0031] More specifically, the gear 2 is meshed with the external driving gear, and can drive the hollow cylindrical outer shell 1 to rotate at a high speed.

[0032] Furthermore, the central axes of the inner cylinder 11, the inner cylinder 2 16 and the hollow cylindrical outer shell 1 coincide with each other.

[0033] Specifically, the coincident central axis can reduce the vibration generated when the inner cylinder 11, the inner cylinder 2 16 and the hollow cylindrical outer shell 1 rotate.

[0034] Furthermore, the built-in clamp 8 includes a cylindrical outer shell 87, the outer side surface of the cylindrical outer shell 87 is connected to the telescopic end of the electric-controlled telescopic rod 1 4, an inner end of the cylindrical outer shell 87 is provided with an electric-controlled telescopic rod 2 89, the telescopic end of the electric-controlled telescopic rod 2 89 is connected with a connecting rod 3 810, both ends of the connecting rod 3 810 are rotatably connected to the connecting rod 2 88, the end of the connecting rod 2 88 is rotatably connected to the connecting rod 1 86, the end of the connecting rod 1 86 is fixedly connected with a fan-shaped tooth 84, and the fan-shaped tooth 84 is rotatably connected to the cylindrical outer shell 87 through a pin 811, and a slide rail 83 is provided inside the cylindrical outer shell 87, and two symmetrically arranged sliders 2 82 are slidably connected to the slide rail 83, and a rack 85 is provided on the outer side surface of the slider 2 82, and the rack 85 is meshed with the fan-shaped tooth 84, and an inner top plate 81 is installed on the outer side surface of the slider 2 82, and the inner top plate 81 is arranged through a strip groove 812 arranged on the outer side surface of the cylindrical outer shell 87.

[0035] Specifically, when clamping the outer ring of the bearing, the outer ring of the bearing is pressed against the outer side surface of the cylindrical outer shell 87, and the inner top plate 81 is ensured to be located inside the outer ring of the bearing. The electrically controlled telescopic rod 2 89 drives the connecting rod 2 88 to move through the connecting rod 3 810. The connecting rod 2 88 drives the fan-shaped tooth 84 to rotate through the connecting rod 1 86. The fan-shaped tooth 84 drives the slider 2 82 to slide along the slide rail 83 through the rack 85. Finally, the inner top plate 81 arranged on the slider 2 82 supports and positions the outer ring of the bearing.

[0036] More specifically, when the position of the outer ring of the bearing needs to be moved, the built-in clamp 8 maintains the clamping state, and the external clamp 7 acting on the outer ring of the bearing is released. Subsequently, the electrically controlled telescopic rod 4 is extended to push the outer ring of the bearing outward. After moving into position, the external clamp 7 re-clamps the outer surface of the outer ring of the bearing.

[0037] During use: Place the outer ring of the ball screw bearing to be processed into the cylindrical positioning groove 6, clamp the outer ring of the ball screw bearing by the clamp set on the hollow cylindrical outer shell 1, and then support and fix the inner ring of the ball screw bearing by the built-in clamp 8.

[0038] When the outer ring of the ball screw bearing is clamped, the motor 14 drives the turntable 18 to rotate through the bevel gear 13, and the turntable 18 drives the three sliders 12 to move synchronously through the spiral involute teeth 20, and the slider 12 drives the external clamping plate 7 to clamp the outer ring of the bearing.

[0039] When clamping the outer ring of the bearing, the outer ring of the bearing is pressed against the outer side surface of the cylindrical outer shell 87, and the inner top plate 81 is ensured to be located inside the outer ring of the bearing. The electrically controlled telescopic rod 2 89 drives the connecting rod 2 88 to move through the connecting rod 3 810. The connecting rod 2 88 drives the fan-shaped tooth 84 to rotate through the connecting rod 1 86. The fan-shaped tooth 84 drives the slider 2 82 to slide along the slide rail 83 through the rack 85. Finally, the inner top plate 81 arranged on the slider 2 82 supports and fixes the inner surface of the outer ring of the bearing.

[0040] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for processing the outer ring of a ball screw bearing, characterized in that: It comprises a hollow cylindrical outer shell (1); a cylindrical positioning groove (6) is provided inside the hollow cylindrical outer shell (1); a built-in clamp (8) is slidably connected inside the cylindrical positioning groove (6); an electric control telescopic rod (4) is installed at the end of the built-in clamp (8); the electric control telescopic rod (4) is connected to the outer side surface of the hollow cylindrical outer shell (1) through a positioning bracket (3); The left side of the hollow cylindrical outer shell (1) is evenly distributed with at least one slide groove (5) in an annular shape, and an external clamping plate (7) is slidably connected in the slide groove (5). The interior of the hollow cylindrical outer shell (1) is provided with an inner cylinder (11), and the interior of the inner cylinder (11) is provided with an inner cylinder (16). The lower end of the outer side surface of the inner cylinder (11) is provided with an annular groove (17), and a rotating disk (18) is installed in the annular groove (17). The two side surfaces of the rotating disk (18) are respectively provided with bevel teeth (19) and a spiral involute. The bottom edge of the inner side surface of the hollow cylindrical outer shell (1) is provided with a motor (14), the output shaft of the motor (14) is connected with a bevel gear (13), the bevel gear (13) is meshed with the bevel gear (19), the bottom of the inner side surface of the hollow cylindrical outer shell (1) is provided with a second slide groove (15), the second slide groove (15) is slidably connected with a slider (12), the slider (12) is connected to the external clamping plate (7), and the outer side surface of the slider (12) is provided with an arc groove that is engaged with the spiral involute tooth (20).

2. The positioning fixture for processing the outer ring of a ball screw bearing according to claim 1, characterized in that: A gear (2) and an annular brush are mounted on the outer side surface of the hollow cylindrical outer shell (1).

3. The positioning fixture for processing the outer ring of a ball screw bearing according to claim 1, characterized in that: The central axes of the inner cylinder body 1 (11), the inner cylinder body 2 (16) and the hollow cylindrical outer shell (1) coincide with each other.

4. The positioning fixture for processing the outer ring of a ball screw bearing according to claim 1, characterized in that: The built-in clamp (8) comprises a cylindrical outer shell (87), the outer side surface of the cylindrical outer shell (87) is connected to the telescopic end of the electric-controlled telescopic rod 1 (4), an inner end of the cylindrical outer shell (87) is provided with an electric-controlled telescopic rod 2 (89), the telescopic end of the electric-controlled telescopic rod 2 (89) is connected to a connecting rod 3 (810), both ends of the connecting rod 3 (810) are rotatably connected to the connecting rod 2 (88), the end of the connecting rod 2 (88) is rotatably connected to the connecting rod 1 (86), and the end of the connecting rod 1 (86) is fixedly connected to the fan-shaped tooth (84 ), the sector teeth (84) are rotatably connected to the cylindrical outer shell (87) through a pin shaft (811), a slide rail (83) is provided inside the cylindrical outer shell (87), two symmetrically arranged sliders (82) are slidably connected to the slide rail (83), a rack (85) is provided on the outer side of the slider (82), the rack (85) is meshed with the sector teeth (84), an inner top plate (81) is installed on the outer side of the slider (82), and the inner top plate (81) is arranged through a strip groove (812) arranged on the outer side of the cylindrical outer shell (87).

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