A centerless clamping device for bearing rings

Abstract

This utility model discloses a centerless clamping device for bearing rings, belonging to the field of bearing ring clamping technology. The top surface of the base plate is provided with a secondary base plate, which includes a double-roller centerless clamping assembly, a swing pressure roller assembly, a motor assembly, a blanking auxiliary component, a feeding channel assembly, a pushing assembly, and a measuring action auxiliary component. The double-roller centerless clamping assembly includes a lower fixed seat, an upper fixed seat, a first roller, a second roller, a first support block, and a first side plate. The swing pressure roller assembly includes a support, a rotating seat, a rotating plate, a drive plate, and a first cylinder. The motor assembly includes a first fixed seat, a servo motor, and a vertical plate. A transition wheel is rotatably connected to the top side of the vertical plate. The second pulley, the transition wheel, and the two first pulleys are connected by a belt. Using this clamping device, non-destructive clamping of thin-walled parts can be achieved, improving the stability of loading and unloading, and integrating high-precision angle adjustment and measurement functions, thereby meeting the demands of modern bearing manufacturing for precision, diversification, and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing ring clamping technology, and in particular to a centerless clamping device for bearing rings. Background Technology

[0002] In the bearing manufacturing industry, the precision machining of bearing rings places extremely high demands on clamping equipment. Traditional bearing ring grinding machines generally employ magnetic clamping structures, using magnetic attraction in conjunction with support blocks to achieve workpiece positioning. While simple in structure and low in cost, this approach has significant technical limitations. First, magnetic clamps are only suitable for ferromagnetic materials (such as bearing steel), and are completely unusable for non-magnetic or weakly magnetic materials such as ceramic bearing rings and titanium alloys. Second, when the height of the bearing ring exceeds its outer diameter, the magnetic attraction is insufficient to effectively fix the workpiece, easily leading to workpiece displacement or even detachment during grinding, causing machining accidents. Third, traditional clamps have poor adaptability to thin-walled bearing rings, and the magnetic attraction pressure is not adjustable, easily causing workpiece deformation. Furthermore, existing equipment generally uses hydraulic cylinder-driven loading and unloading mechanisms, resulting in unstable operation and high maintenance costs. Regarding angle adjustment, most clamping equipment lacks precise angle adjustment functions, making it difficult to meet the machining requirements of special structures such as the locking surfaces of angular contact bearings. The measuring system usually shares the bore space with the grinding wheel, forcing a reduction in the grinding wheel diameter, which affects both machining efficiency and shortens the grinding wheel's lifespan. Utility Model Content

[0003] The purpose of this utility model is to provide a centerless clamping device for bearing rings, so as to solve the problems of existing centerless clamping devices for bearing rings, such as damage when clamping thin-walled parts, unstable loading and unloading, and limited angle adjustment and measurement functions.

[0004] To solve the above technical problems, this utility model provides a centerless clamping device for bearing rings, including a base plate, a sub-base plate on the top surface of the base plate, and a double roller centerless clamping assembly, a swing pressure roller assembly, a motor assembly, a material dropping accessory, a feeding channel assembly, a pushing assembly, and a measuring action accessory. The dual-roller centerless clamp assembly includes a lower fixed base, an upper fixed base, a first roller, a second roller, a first support block, and a first side plate. The lower fixed base is fixed to the top surface of the sub-base plate. The first roller and the second roller are each fixed with a rotating shaft on their side. The other ends of the two rotating shafts pass through the upper fixed base and the lower fixed base respectively, and the other ends of the shafts are each fixed with a first pulley. The first side plate is fixed to the top surface of the sub-base plate. The first support block is located between the first roller and the second roller and is fixed to the side of the first side plate. The swing pressure roller assembly includes a support, a rotating seat, a rotating plate, a drive plate, and a first cylinder. The support and the rotating seat are both fixed to the top surface of the sub-base plate. A mounting plate is fixed to the top of the support. The first cylinder is fixed to the top surface of the mounting plate, and its piston rod passes through the mounting plate and is connected to a pressure block. The rotating plate is rotatably connected to the rotating seat and fixed to the side of the drive plate. The rotating plate is also fixed to the top surface of the upper fixed seat. The motor assembly includes a first fixed base, a servo motor, and a vertical plate. The first fixed base is fixed to the top surface of the sub-base plate, and a guide rail is fixed to its top surface. A movable seat is slidably connected to the guide rail. The servo motor is fixed to the movable seat, and its output end is connected to a second pulley. A transition wheel is rotatably connected to the top side of the vertical plate. The second pulley, the transition wheel, and the two first pulleys are connected by a belt.

[0005] As a further improvement to the above technical solution: Optionally, the pushing assembly includes a second cylinder and a pushing block. The second cylinder is fixed to the top surface of the sub-base plate via a connecting plate, and its piston rod is connected to the pushing block, which is located above the first support block.

[0006] Optionally, the unloading accessory includes a first inclined slide plate, with limit plates fixed on both sides of the first inclined slide plate, a support plate fixed on its bottom surface, and its top end located between the first roller and the second roller. An L-shaped plate is fixed on the side of the support plate, and the L-shaped plate is fixed to the top surface of the sub-base plate.

[0007] Optionally, the feed channel assembly includes a feed pipe and a second inclined slide plate. The feed pipe is installed on the first side plate and a first reinforcing plate and a second reinforcing plate are fixed on its two sides respectively. A limit block is fixed on its bottom side. A second limit plate is fixed on both sides of the second inclined slide plate and its bottom is installed on the top of the feed pipe. The bottom end of the feed pipe is located above the first support block.

[0008] Optionally, the measuring action accessory includes a base, a measuring instrument, and a third cylinder. The base is fixed to the top surface of the sub-base plate. The measuring instrument has support seats on both sides. A movable block is fixed to the side of the support seat. A connecting rod is fixed between the two movable blocks and a straight plate is fixed to its side. A washer is sleeved on the side of the connecting rod. A second support block is fixed to the side of the movable block through a connecting block. A vertical rod is fixed to the top of the connecting block. A cylinder is detachably fixed to the side of the top of the vertical rod. The piston rod of the third cylinder is connected to the moving block.

[0009] Optionally, a second fixing seat is detachably fixed to the side of the base plate, and the sub-base plate is rotatably connected to the base plate via a central shaft, with a lever movably connected to its top surface via a movable rod. The lever is located in the second fixing seat.

[0010] Optionally, a first auxiliary plate, a third auxiliary plate, and an auxiliary block are fixed to the side of the support. An L-shaped rod is also fixed to the side of the mounting plate, and a connecting column is fixed thereto. A tension spring is connected to the bottom end of the connecting column. A connector is fixed to the top surface of the drive plate, and the connector is connected to the bottom end of the tension spring.

[0011] Optionally, an extension plate is fixed to the side of the base plate.

[0012] In the centerless clamping device for bearing rings provided by this utility model, the top surface of the base plate is provided with a secondary base plate, and the secondary base plate is provided with a double roller centerless clamping assembly, a swing pressure roller assembly, a motor assembly, a blanking auxiliary component, a feeding channel assembly, a pushing assembly, and a measuring action auxiliary component; the double roller centerless clamping assembly includes a lower fixed seat, an upper fixed seat, a first roller, a second roller, a first support block, and a first side plate; the swing pressure roller assembly includes a support, a rotating seat, a rotating plate, a drive plate, and a first cylinder; the motor assembly includes a first fixed seat, a servo motor, and a vertical plate; a transition wheel is rotatably connected to the top side of the vertical plate; the second pulley, the transition wheel, and the two first pulleys are connected by a belt; using this clamping device, non-destructive clamping of thin-walled parts can be achieved, the stability of loading and unloading can be improved, and high-precision angle adjustment and measurement functions can be integrated, thereby meeting the needs of modern bearing manufacturing for precision, diversification, and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the centerless clamping device for bearing rings provided by this utility model; Figure 2 This is a rear view of the centerless clamping device for bearing rings provided by this utility model. Detailed Implementation

[0014] 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.

[0015] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] This utility model provides a centerless clamping device for bearing rings, the structure of which is as follows: Figure 1 , Figure 2As shown, the system includes a base plate 1, with a sub-base plate 2 on its top surface. The sub-base plate 2 is equipped with a double-roller centerless clamp assembly, a swing pressure roller assembly, a motor assembly, a material feeding accessory, a feeding channel assembly, a pushing assembly, and a measuring action accessory. The double-roller centerless clamp assembly includes a lower fixed seat 21, an upper fixed seat 24, a first roller 25, a second roller 53, a first support block 54, and a first side plate 56. The lower fixed seat 21 is fixed to the top surface of the sub-base plate 2. The first roller 25 and the second roller 53 are both fixed with rotating shafts 62. The other ends of the two rotating shafts 62 pass through the upper fixed seat 24 and the lower fixed seat 21, respectively, and the other ends of the shafts 62 are both fixed with first pulleys 63. The first side plate 56 is fixed to the top surface of the sub-base plate 2. The first support block 54 is located between the first roller 25 and the second roller 53 and is fixed to the side of the first side plate 56. The swing pressure roller assembly includes a support 45, a rotating seat 32, and a rotating plate. 33. The drive plate 34, the first cylinder 39, the support 45, and the rotating seat 32 are all fixed to the top surface of the sub-base plate 2. The top of the support 45 is fixed with a mounting plate 40. The first cylinder 39 is fixed to the top surface of the mounting plate 40. Its piston rod passes through the mounting plate 40 and is connected to a pressure block 44. The rotating plate 33 is rotatably connected to the rotating seat 32 and fixed to the side of the drive plate 34. The rotating plate 33 is also fixed to the top surface of the upper fixed seat 24. The motor assembly includes a first fixed seat 52, a servo motor 47, and a vertical plate 49. The first fixed seat 52 is fixed to the top surface of the sub-base plate 2. A guide rail 51 is fixed to its top surface. A movable seat 50 is slidably connected to the guide rail 51. The servo motor 47 is fixed to the movable seat 50. Its output end is connected to a second pulley 65. A transition wheel 48 is rotatably connected to the top side of the vertical plate 49. The second pulley 65, the transition wheel 48, and the two first pulleys 63 are connected by a belt 64. The use of centerless clamping equipment for bearing rings enables non-destructive clamping of thin-walled parts, improves the stability of loading and unloading, and integrates high-precision angle adjustment and measurement functions, thereby meeting the needs of modern bearing manufacturing for precision, diversification and efficiency.

[0018] Specifically, the pushing assembly includes a second cylinder 59 and a pusher block 58. The second cylinder 59 is fixed to the top surface of the sub-base plate 2 via a connecting plate 60, and its piston rod is connected to the pusher block 58, which is located above the first support block 54.

[0019] Specifically, the unloading accessory includes a first inclined slide plate 17, with limit plates 18 fixed on both sides of the first inclined slide plate 17, a support plate 20 fixed on its bottom surface, and its top end located between the first roller 25 and the second roller 53. An L-shaped plate 15 is fixed on the side of the support plate 20, and the L-shaped plate 15 is fixed to the top surface of the sub-base plate 2.

[0020] Specifically, the feed channel assembly includes a feed pipe 26 and a second inclined slide plate 28. The feed pipe 26 is installed on the first side plate 56 and a first reinforcing plate 27 and a second reinforcing plate 31 are fixed on its two sides respectively. A limit block 30 is fixed on its bottom side. The second inclined slide plate 28 has a second limit plate 29 fixed on both sides and its bottom is installed on the top of the feed pipe 26. The bottom end of the feed pipe 26 is located above the first support block 54.

[0021] Specifically, the measuring device includes a base 7, a measuring instrument 23, and a third cylinder 6. The base 7 is fixed to the top surface of the sub-base plate 2. The measuring instrument 23 has support seats 22 on both sides. A moving block 8 is fixed to the side of the support seat 22. A connecting rod 10 is fixed between the two moving blocks 8 and a straight plate 9 is fixed to its side. A washer ring 11 is fitted on the side of the connecting rod 10. A second support block 13 is fixed to the side of the moving block 8 through a connecting block 12. A vertical rod 14 is fixed to the top of the connecting block 12. A cylinder 16 is detachably fixed to the side of the top of the vertical rod 14. The piston rod of the third cylinder 6 is connected to the moving block 8.

[0022] Furthermore, a second fixing seat 4 is detachably fixed to the side of the base plate 1, and the sub-base plate 2 is rotatably connected to the base plate 1 via a central shaft 19, and its top surface is movably connected to a lever 5 via a movable rod 3. The lever 5 is located in the second fixing seat 4.

[0023] Furthermore, the support 45 is fixed with a first auxiliary plate 42, a third auxiliary plate 43 and an auxiliary block 41 on its side. The mounting plate 40 is also fixed with an L-shaped rod 38 and a connecting column 37. The bottom end of the connecting column 37 is connected to a tension spring 36. The top surface of the drive plate 34 is fixed with a connector 35, which is connected to the bottom end of the tension spring 36.

[0024] Furthermore, an extension plate 61 is fixed to the side of the base plate 1.

[0025] Operating procedures When the equipment is in operation, the operator first adjusts the angle of the sub-base plate 2 using lever 5, and tightens the second fixed seat 4 to lock it in place. The bearing ring workpiece enters from the feed pipe 26 and slides along the second inclined slide plate 28 onto the first support block 54. The dual-axis cylinder 59 pushes the push block 58 to position the workpiece between the first roller 25 and the second roller 53. The first cylinder 39 drives the rotating plate 33 to press down through the pressure block 44, causing the upper fixed seat 24 to drive the first roller 25 to contact the workpiece. The elastic spring device provides adjustable pressure, and the servo motor 47 drives the two rollers to rotate synchronously through the belt 64, driving the workpiece to perform grinding. The third cylinder 6 pushes the measuring instrument 23 to detect the processing dimensions in real time. The processed workpiece slides out through the first inclined slide plate 17.

[0026] Throughout the process, the post-measurement system avoids interference with the grinding wheel, and the adjustable design of the motor assembly adapts to different speed requirements.

[0027] Beneficial effects This equipment completely solves the problem of clamping non-magnetic materials and irregularly shaped workpieces with traditional magnetic clamps through a composite clamping structure of the first roller 25, the second roller 53 and the elastic spring. The innovative swing pressure roller assembly with adjustable pressure design can not only ensure the firm fixation of thick-walled workpieces, but also prevent the deformation of thin-walled parts through elastic buffer. The pusher mechanism driven by the dual-axis cylinder 59 replaces the traditional hydraulic cylinder, which is smooth and easy to maintain. The servo motor 47, together with the two first pulleys 63, the belt 64 and the second pulley 65, realizes the precise speed adjustment of the first roller 25 and the second roller 53 to meet the directional grinding requirements of special structures. The angle adjustment mechanism of the sub-base plate 2 can realize precise adjustment of the movable rod 3, the second fixed seat 4, the lever 5 and the central shaft 19. The design of the rear measuring instrument 23 frees up the grinding wheel installation space, and the modular component layout facilitates quick replacement and maintenance.

[0028] The equipment is highly compatible and can be adapted to the processing of various bearing rings.

[0029] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A centerless clamping device for bearing rings, characterized in that, Includes a base plate (1), the top surface of which is provided with a sub-base plate (2), the sub-base plate (2) is provided with a double roller centerless clamp assembly, a swing pressure roller assembly, a motor assembly, a material dropping accessory, a feeding channel assembly, a pushing assembly and a measuring action accessory; The dual-roller centerless clamp assembly includes a lower fixed seat (21), an upper fixed seat (24), a first roller (25), a second roller (53), a first support block (54), and a first side plate (56). The lower fixed seat (21) is fixed to the top surface of the sub-base plate (2). The first roller (25) and the second roller (53) are both fixed with a rotating shaft (62). The other ends of the two rotating shafts (62) pass through the upper fixed seat (24) and the lower fixed seat (21), and the other ends of the shafts are both fixed with a first pulley (63). The first side plate (56) is fixed to the top surface of the sub-base plate (2). The first support block (54) is located between the first roller (25) and the second roller (53) and is fixed to the side of the first side plate (56). The swing pressure roller assembly includes a support (45), a rotating seat (32), a rotating plate (33), a drive plate (34), and a first cylinder (39). The support (45) and the rotating seat (32) are both fixed to the top surface of the sub-base plate (2). The top of the support (45) is fixed with a mounting plate (40). The first cylinder (39) is fixed to the top surface of the mounting plate (40), and its piston rod passes through the mounting plate (40) and is connected to a pressure block (44). The rotating plate (33) is rotatably connected to the rotating seat (32) and fixed to the side of the drive plate (34). The rotating plate (33) is also fixed to the top surface of the upper fixed seat (24). The motor assembly includes a first fixed base (52), a servo motor (47), and a vertical plate (49). The first fixed base (52) is fixed to the top surface of the sub-base plate (2), and a guide rail (51) is fixed to its top surface. A movable seat (50) is slidably connected to the guide rail (51). The servo motor (47) is fixed to the movable seat (50), and its output end is connected to a second pulley (65). A transition wheel (48) is rotatably connected to the top side of the vertical plate (49). The second pulley (65), the transition wheel (48), and the two first pulleys (63) are connected by a belt (64).

2. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The pushing assembly includes a second cylinder (59) and a pusher block (58). The second cylinder (59) is fixed to the top surface of the sub-base plate (2) by a connecting plate (60), and its piston rod is connected to the pusher block (58). The pusher block (58) is located above the first support block (54).

3. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The material unloading accessory includes a first inclined slide plate (17), with limit plates (18) fixed on both sides of the first inclined slide plate (17), a support plate (20) fixed on its bottom surface, and its top end located between the first roller (25) and the second roller (53). An L-shaped plate (15) is fixed on the side of the support plate (20), and the L-shaped plate (15) is fixed to the top surface of the sub-base plate (2).

4. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The feed channel assembly includes a feed tube (26) and a second inclined slide plate (28). The feed tube (26) is installed on the first side plate (56) and a first reinforcing plate (27) and a second reinforcing plate (31) are fixed on its two sides respectively. A limit block (30) is fixed on its bottom side. A second limit plate (29) is fixed on both sides of the second inclined slide plate (28) and its bottom is installed on the top of the feed tube (26). The bottom end of the feed tube (26) is located above the support block (54).

5. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The measuring action accessory includes a base (7), a measuring instrument (23), and a third cylinder (6). The base (7) is fixed to the top surface of the sub-base plate (2). The measuring instrument (23) is provided with support seats (22) on both sides. A moving block (8) is fixed on the side of the support seat (22). A connecting rod (10) is fixed between the two moving blocks (8) and a straight plate (9) is fixed on its side. A washer (11) is sleeved on the side of the connecting rod (10). A second support block (13) is fixed on the side of the moving block (8) through a connecting block (12). A vertical rod (14) is fixed at the top of the connecting block (12). A cylinder (16) is detachably fixed on the side of the top of the vertical rod (14). The piston rod of the third cylinder (6) is connected to the moving block (8).

6. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The base plate (1) is detachably fixed with a second fixing seat (4) on its side. The sub-base plate (2) is rotatably connected to the base plate (1) through a central shaft (19), and its top surface is movably connected with a lever (5) through a movable rod (3). The lever (5) is located in the second fixing seat (4).

7. The centerless clamping device for bearing rings as described in claim 1, characterized in that, The support (45) is fixed with a first auxiliary plate (42), a third auxiliary plate (43) and an auxiliary block (41) on its side. The mounting plate (40) is also fixed with an L-shaped rod (38) and a connecting column (37) on its side. A tension spring (36) is connected to the bottom of the connecting column (37). A connector (35) is fixed to the top surface of the drive plate (34). The connector (35) is connected to the bottom of the tension spring (36).

8. The centerless clamping device for bearing rings as described in claim 1, characterized in that, An extension plate (61) is fixed to the side of the base plate (1).

Images