A whole window type retainer pocket processing clamping tool

Abstract

The application discloses a whole window type cage pocket machining clamping tool, and relates to the technical field of machining clamping tools.The tool comprises a clamping body, an outer diameter pressing plate and an end face pressing plate, the side wall of the clamping body is respectively provided with a first positioning ring and a second positioning ring, the first positioning ring and the second positioning ring are both provided with a positioning stop, the outer diameter pressing plate is provided with a plurality of pressing plates which are distributed along the circumference of the first positioning ring and used for abutting against the outer side wall of the cage, and the end face pressing plate is provided with a plurality of pressing plates which are arranged at the top end of the clamping body along the circumference of the clamping body and used for abutting against the top end of the cage.The tool can significantly improve the stability of the cage during machining, thereby improving the pocket machining precision, size consistency and surface quality, reducing the dependence on the experience of operators and realizing efficient batch production.

Description

Technical Field

[0001] This application relates to the technical field of machining clamping fixtures, and in particular to a clamping fixture for machining pockets of an integral window-type retainer. Background Technology

[0002] As a key component of bearings, the machining accuracy of the cage pockets directly affects the overall performance and service life of the bearing. In recent years, with the development of the precision machinery industry, the requirements for the machining accuracy of cage pockets have been increasing. In modern industrial systems, high-precision cage machining technology has become an important means to improve the operational stability of mechanical equipment and extend its service life. It is widely used in aerospace, automotive manufacturing, and precision instruments, providing a solid technical guarantee for the efficient operation of various industries.

[0003] In traditional processes, the cage pockets are mainly machined manually, requiring clamping and alignment. The specific operation involves fixing the outer diameter of the cage with bolts to achieve simple clamping, and using locating pins to engage with the inner hole of the cage for initial positioning.

[0004] However, while traditional cage clamping methods can meet processing requirements to some extent, they are prone to problems during processing. Vibration or movement of the cage can lead to poor consistency in the dimensions of the machined pockets, difficulty in controlling geometric tolerances, and substandard surface roughness. This directly affects the stability of bearing operation. In addition, the processing requires technicians to frequently adjust the position of the cage, resulting in high labor costs and low processing efficiency, making it difficult to meet the needs of current mass production. Summary of the Invention

[0005] To address the problems existing in the prior art, this application provides a clamping fixture for machining the pocket of an integral window-type cage.

[0006] This application provides a clamping fixture for machining pockets in an integral window-type retainer, employing the following technical solution: A fixture for machining pockets in an integral window-type retainer includes a fixture body, an outer diameter pressure plate, and an end face pressure plate. The sidewalls of the fixture body are respectively provided with a first positioning ring and a second positioning ring. Both the first and second positioning rings have positioning stops. The positioning stops on the first positioning ring are adapted to the inner diameter of the bottom of the retainer, and the positioning stops on the second positioning ring are adapted to the inner diameter of the top of the retainer. Multiple outer diameter pressure plates are provided and distributed circumferentially along the first positioning rings. The first positioning rings are respectively provided with fixing members for fixing each of the outer diameter pressure plates, and each of the outer diameter pressure plates is used to press against the outer sidewall of the retainer. Multiple end face pressure plates are provided and disposed circumferentially at the top of the fixture body. The fixture body is provided with a fixing structure for fixing each of the end face pressure plates, and each of the end face pressure plates is used to press against the top of the retainer.

[0007] Optionally, both the first and second positioning rings are provided with multiple discharge ports along the circumference of the clamping body.

[0008] Optionally, each of the discharge port positions is slidably provided with a push rod, the push rod being used to abut against the inner side wall of the retainer, and the clamping body is respectively provided with an adjusting member for adjusting the position of each push rod.

[0009] Optionally, the adjusting component includes an adjusting screw, which passes through the clamping body and is threadedly engaged with the clamping body, and the push rod is rotatably sleeved on the corresponding adjusting screw.

[0010] Optionally, the fixing structure includes locking bolts, and multiple locking bolts are provided, each corresponding to an end face pressure plate. Each locking bolt is threaded with the clamp body. An oblong hole is provided on the end face pressure plate, and the locking bolt passes through the oblong hole of the corresponding end face pressure plate.

[0011] Optionally, the fixing structure includes a mounting ring and a limiting member. The mounting ring is slidably disposed at the top of the clamping body along the axial direction of the clamping body. Each of the end face pressure plates is disposed on the mounting ring and is evenly distributed along the circumference of the mounting ring. The limiting member is used to prevent the mounting ring from sliding.

[0012] Optionally, the clamping body is provided with a support spring for driving the mounting ring to slide away from the top of the clamping body.

[0013] Optionally, the end face pressure plate is slidably disposed on the mounting ring along a direction close to or away from the central axis of the mounting ring, and the mounting ring is provided with a driving mechanism for driving each of the end face pressure plates to slide.

[0014] Optionally, the driving mechanism includes an elastic element, a driving ring, and a driving assembly. Multiple elastic elements are provided, each corresponding to a specific end face pressure plate. Each elastic element drives the corresponding end face pressure plate to slide towards the central axis of the mounting ring. The driving ring is coaxially rotatably mounted on the mounting ring. Multiple driving blocks are provided on the sidewall of the mounting ring, each corresponding to a specific end face pressure plate. A guide slope is provided on the sidewall of each driving block, abutting against the corresponding end face pressure plate to guide it to slide away from the central axis of the mounting ring. The driving assembly drives the driving ring to rotate.

[0015] Optionally, the drive assembly includes a worm gear, a worm, a transmission gear, and an arc-shaped toothed ring. The worm gear and the worm are both rotatably mounted on the mounting ring, and the worm gear meshes with the worm. The transmission gear is coaxially and fixedly connected to the worm gear. The arc-shaped toothed ring is fixedly mounted on the drive ring, and the transmission gear meshes with the arc-shaped toothed ring.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This application utilizes the locating stops on the first and second locating rings to precisely engage with the inner diameters of the bottom and top of the cage, respectively, providing stable radial support and axial positioning for the cage and ensuring initial positional accuracy during clamping. Multiple outer diameter pressure plates are distributed circumferentially along the first locating ring and abut against the outer wall of the cage, achieving uniform clamping of the cage throughout its circumference and effectively suppressing cutting vibration. Multiple end face pressure plates are positioned at the top of the clamping body circumferentially and apply pressure to the top of the cage through a fixing structure, preventing axial movement of the cage during machining. The overall solution achieves omnidirectional fixation of the cage through multi-directional composite clamping of the inner diameter, outer diameter, and end faces, significantly improving the stability of the cage during machining, thereby improving the machining accuracy, dimensional consistency, and surface quality of the pocket.

[0017] 2. The clamping fixture of this application can complete the processing of all pockets in one clamping, without the need for mid-process repositioning or adjustment, avoiding the accumulation of errors caused by repeated positioning, improving processing accuracy and product consistency, while simplifying the operation process, reducing reliance on highly skilled workers, and achieving efficient mass production.

[0018] 3. This application effectively improves chip removal during machining by using multiple discharge ports arranged circumferentially on the first and second positioning rings. This design avoids the impact of chip accumulation on the machining accuracy of the cage, while reducing equipment wear caused by chip residue, thereby improving the stability and service life of the tooling.

[0019] 4. By setting a top rod and an adjusting screw, the position of the top rod can be precisely adjusted, thereby adapting to the clamping and fixing of cages of different sizes and improving the versatility and flexibility of the tooling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a structural cross-sectional view of Embodiment 1 of this application, used to illustrate the installation structure of the outer diameter pressure plate and the end face pressure plate; Figure 3 This is a structural cross-sectional view of Embodiment 1 of this application, used to illustrate the specific structure of the discharge port; Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this application; Figure 5 This is a structural cross-sectional view of Embodiment 2 of this application; Figure 6 This is a partial structural diagram of Embodiment 2 of this application, mainly used to illustrate the specific structure of the driving block.

[0021] Explanation of reference numerals in the attached drawings: 1. Clamp body; 11. First positioning ring; 12. Second positioning ring; 13. Positioning stop; 14. Fixing bolt; 15. Locking bolt; 16. Discharge port; 17. Top rod; 18. Adjusting screw; 19. Fixing plate; 2. Outer diameter pressure plate; 3. End face pressure plate; 31. Pressing part; 32. Waist-shaped hole; 33. Limiting block; 4. Mounting ring; 41. Connecting plate; 42. Elastic element; 43. Drive ring; 431. Drive block; 432. Guide slope; 44. Worm gear; 45. Worm; 451. Hexagonal block; 46. Transmission gear; 47. Arc-shaped toothed ring; 48. Mounting bracket; 5. Limiting screw; 51. Limiting nut; 52. Support spring. Detailed Implementation

[0022] The following will be combined with the appendix Figure 1 - Appendix Figure 6 The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0023] The inventors of this application have discovered that traditional cage clamping methods mainly rely on manual clamping and alignment. During processing, this method is prone to problems due to cage vibration or movement, leading to poor consistency in the dimensions of the machined pockets, difficulty in controlling geometric tolerances, and substandard surface roughness. This directly affects the stability of bearing operation. Furthermore, the processing requires frequent adjustments to the cage position by technicians, resulting in high labor costs and low processing efficiency, making it difficult to meet the demands of current mass production. Therefore, this application discloses an integral window-type cage pocket machining clamping fixture, mainly employing the following solution: Example 1 Embodiment 1 of this application discloses a clamping fixture for machining pockets in an integral window-type retainer. (Refer to...) Figure 1 , 2 The clamping mechanism includes a clamping body 1, an outer diameter pressure plate 2, and an end face pressure plate 3. The side wall of the clamping body 1 is provided with a first positioning ring 11 and a second positioning ring 12, which are integrally formed with the clamping body 1. The first positioning ring 11 is located near the bottom end of the clamping body 1, and the second positioning ring 12 is located near the top end of the clamping body 1. Both the first positioning ring 11 and the second positioning ring 12 are provided with positioning stops 13. Multiple outer diameter pressure plates 2 are provided, distributed circumferentially along the first positioning ring 11, and used to abut against the outer side wall of the retainer. Multiple end face pressure plates 3 are also provided, distributed circumferentially along the clamping body 1 and located at the top end of the clamping body 1, used to abut against the top end of the retainer. This multi-directional composite clamping method significantly improves the stability of the retainer during processing, thereby improving the processing accuracy, dimensional consistency, and surface quality of the pockets.

[0024] Reference Figure 1 , 2 Specifically, the clamping body 1 serves as the basic structure of the entire tooling. Its material can be high-strength steel or aluminum alloy to ensure sufficient rigidity and lightweight design. The clamping body 1 is ring-shaped, and the diameter of its outer wall gradually increases from the top to the bottom. The positioning stop 13 on the first positioning ring 11 is adapted to the inner diameter of the bottom of the cage, and the positioning stop 13 on the second positioning ring 12 is adapted to the inner diameter of the top of the cage. Through the precise fit of the positioning stops 13 on the first positioning ring 11 and the second positioning ring 12 with the inner diameters of the bottom and top of the cage, stable radial support and axial positioning are provided for the cage, ensuring initial positional accuracy during clamping.

[0025] Reference Figure 1 , 2 The first positioning ring 11 is provided with fixing parts for fixing each outer diameter pressure plate 2; specifically, the fixing parts are fixing bolts 14, and each outer diameter pressure plate 2 is provided with two fixing bolts 14. The outer diameter pressure plate 2 is set in an arc shape, which can fit tightly against the outer wall of the cage and effectively prevent cutting vibration.

[0026] Reference Figure 2 The end face pressure plate 3 is also made of steel plate, and the end face pressure plate 3 is provided with a pressing part 31 for abutting the top of the retainer. The clamping body 1 is provided with a fixing structure for fixing each of the end face pressure plates 3. Specifically, the fixing structure includes locking bolts 15, and multiple locking bolts 15 are provided, each corresponding to one of the end face pressure plates 3. Each locking bolt 15 is threaded to the top of the clamping body 1. The end face pressure plate 3 is provided with a waist-shaped hole 32, and the locking bolt 15 passes through the waist-shaped hole 32 of the corresponding end face pressure plate 3. By providing the waist-shaped hole 32, the position of the end face pressure plate 3 can be adjusted, which makes it easy to install the retainer onto the clamping body 1, and allows the pressing part 31 to accurately abut the top of the retainer.

[0027] Reference Figure 1 , 3 The first positioning ring 11 and the second positioning ring 12 are respectively provided with multiple discharge ports 16 along the circumference of the fixture body 1. The discharge ports 16 can effectively improve the chip discharge effect during the processing. This design avoids the impact of chip accumulation on the machining accuracy of the cage, and at the same time reduces the wear of the equipment caused by chip residue, thereby improving the stability and service life of the tooling.

[0028] Reference Figure 3 Each discharge port 16 is equipped with a push rod 17, which is made of stainless steel and has good wear resistance and corrosion resistance. The clamping body 1 is equipped with adjusting components for adjusting the position of each push rod 17; specifically, the adjusting components include adjusting screws 18, which pass through the clamping body 1 and are threadedly engaged with it. The axis of the adjusting screws 18 is perpendicular to the central axis of the clamping body 1. Each push rod 17 is rotatably sleeved on its corresponding adjusting screw 18. By setting the push rods 17 and precisely adjusting their positions using the adjusting screws 18, the push rods 17 abut against the inner wall of the cage, thus accommodating the clamping and fixing of cages of different sizes, improving the versatility and flexibility of the tooling.

[0029] The implementation principle of the integral window-type cage pocket machining clamping fixture in Embodiment 1 of this application is as follows: the positioning stops 13 on the first positioning ring 11 and the second positioning ring 12 are precisely matched with the inner diameters of the bottom and top of the cage, respectively, to provide stable radial support and axial positioning for the cage, ensuring the initial position accuracy during clamping. Multiple outer diameter pressure plates 2 are distributed circumferentially along the first positioning ring 11 and abut against the outer wall of the cage, achieving uniform clamping of the cage in the entire circumference and effectively suppressing cutting vibration. Multiple end face pressure plates 3 are evenly arranged at the top of the clamping body 1 in the circumference, and pressure is applied to the top of the cage through a fixing structure to prevent axial movement of the cage during machining. The overall solution achieves all-round fixation of the cage through multi-directional composite clamping of the inner diameter, outer diameter, and end faces, significantly improving the stability of the cage during machining, thereby improving the machining accuracy, dimensional consistency, and surface quality of the pocket.

[0030] Furthermore, the clamping fixture can complete the processing of all pockets in one clamping, without the need for mid-process repositioning or adjustment, avoiding the accumulation of errors caused by repeated positioning, improving processing accuracy and product consistency, while simplifying the operation process, reducing reliance on highly skilled workers, and achieving efficient mass production.

[0031] Example 2 The difference from Example 1 is that: (Refer to...) Figure 4 The fixing structure includes a mounting ring 4 and a limiting component. The mounting ring 4 is slidably disposed at the top of the clamping body 1 along the axial direction. Each end face pressure plate 3 is evenly distributed on the mounting ring 4 along the circumference of the mounting ring 4. The limiting component is used to prevent the mounting ring 4 from sliding. Specifically, the limiting component includes a limiting screw 5. Multiple limiting screws 5 are provided. Multiple fixing plates 19 are fixedly disposed on the inner side wall of the clamping body 1. The fixing plates 19 correspond one-to-one with the limiting screws 5, and each fixing plate 19 is evenly distributed along the circumference of the clamping body 1. The limiting screws 5 are fixedly disposed on the corresponding fixing plates 19, and the axial direction of the limiting screws 5 is parallel to the axial direction of the clamping body 1. Multiple connecting plates 41 are fixed on the mounting ring 4. The connecting plates 41 correspond one-to-one with the limiting screws 5, and the limiting screws 5 pass through the corresponding connecting plates 41. Each limiting screw 5 is threadedly connected to a limiting nut 51. The movement of the mounting ring 4 can drive the end face pressure plates 3 to move together and press the top of the cage, making the clamping of the cage more convenient.

[0032] Reference Figure 4 Each limiting screw 5 is fitted with a support spring 52, with its two ends abutting against the fixing plate 19 and the connecting plate 41 respectively, to support the mounting ring 4. The support spring 52 provides an upward elastic force to the mounting ring 4, allowing it to automatically return to a position away from the top of the clamping body 1 when not restrained by the limiting nut 51. This design simplifies the tooling operation process and improves the efficiency of clamping and unloading.

[0033] Reference Figure 4 , 5 The end face pressure plate 3 is slidably mounted on the mounting ring 4 along a direction close to or away from the central axis of the mounting ring 4. The mounting ring 4 has multiple guide holes, each corresponding to one of the end face pressure plates 3. Guide blocks are fixedly mounted on the end face pressure plates 3, each corresponding to one of the guide holes and slidably positioned within the guide holes. Limit blocks 33 are bolted to the guide blocks. The mounting ring 4 is equipped with a driving mechanism for sliding each of the end face pressure plates 3. The end face pressure plates 3 can slide along a direction close to or away from the central axis of the mounting ring 4, thereby adapting to the top positioning requirements of cages of different sizes and improving the versatility of the tooling. Simultaneously, adjusting the position of the end face pressure plates 3 facilitates the installation and disassembly of the cage, improving ease of use.

[0034] Reference Figure 5 Specifically, the drive mechanism includes an elastic element 42, a drive ring 43, and a drive assembly. Multiple elastic elements 42 are provided, each corresponding to one end face pressure plate 3. Specifically, the elastic element 42 includes a tension spring, the two ends of which are connected to the corresponding end face pressure plate 3 and the mounting ring 4, respectively, to drive the corresponding end face pressure plate 3 to slide towards the central axis of the mounting ring 4. Under normal circumstances, each end face pressure plate 3 retracts towards the central axis of the mounting ring 4 under the elastic force of the tension spring, which facilitates the installation of the cage.

[0035] Reference Figure 5 , 6 The drive ring 43 is coaxially rotatably mounted on the mounting ring 4. The side wall of the mounting ring 4 is provided with multiple drive blocks 431, each drive block 431 corresponding to an end face pressure plate 3. The side wall of the drive block 431 is provided with a guide slope 432, which abuts against the limit block 33 on the corresponding end face pressure plate 3. When the drive ring 43 rotates, each end face pressure plate 3 slides simultaneously away from the central axis of the mounting ring 4 under the guidance of the guide slope 432, realizing synchronous driving of each end face pressure plate 3. This design simplifies the operation process and improves clamping efficiency.

[0036] Reference Figure 5 , 6The drive assembly is used to drive the drive ring 43 to rotate. Specifically, the drive assembly includes a worm gear 44, a worm 45, a transmission gear 46, and an arc-shaped toothed ring 47. A mounting bracket 48 is fixedly installed on the mounting ring 4. The worm gear 44 and the worm 45 are both rotatably mounted on the mounting bracket 48, and the worm gear 44 meshes with the worm 45. The transmission gear 46 is coaxially fixedly connected to the worm gear 44. The arc-shaped toothed ring 47 is fixedly installed on the drive ring 43, and the transmission gear 46 meshes with the arc-shaped toothed ring 47. A hexagonal block 451 is provided at the end of the worm 45. The operator rotates the hexagonal block 451 with a wrench, and through the sequential transmission of the worm 45, worm gear 44, transmission gear 46, and arc-shaped toothed ring 47, the drive ring 43 can be driven to rotate. Moreover, the meshing structure of the worm gear 44 and the worm 45 has a self-locking function. When the worm 45 stops rotating, the drive ring 43 can be limited, improving the ease of use. Furthermore, in actual use, workers can also drive the hexagonal block 451 to rotate using a motor or electric wrench, reducing the labor intensity of workers.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clamping fixture for machining pockets in an integral window-type retainer, characterized in that: The fixture includes a clamping body (1), an outer diameter pressure plate (2), and an end face pressure plate (3). The sidewalls of the clamping body (1) are respectively provided with a first positioning ring (11) and a second positioning ring (12). Both the first positioning ring (11) and the second positioning ring (12) are provided with positioning stops (13). The positioning stop (13) on the first positioning ring (11) is adapted to the inner diameter of the bottom of the retainer, and the positioning stop (13) on the second positioning ring (12) is adapted to the inner diameter of the top of the retainer. The outer diameter pressure plate (2) is provided with… There are multiple end face pressure plates (3) and they are distributed around the first positioning ring (11). The first positioning ring (11) is provided with a fixing member for fixing each of the outer diameter pressure plates (2). Each of the outer diameter pressure plates (2) is used to press against the outer side wall of the retainer. There are multiple end face pressure plates (3) and they are arranged around the top of the clamping body (1). The clamping body (1) is provided with a fixing structure for fixing each of the end face pressure plates (3). Each of the end face pressure plates (3) is used to press against the top of the retainer. Multiple discharge ports (16) are provided on the first positioning ring (11) and the second positioning ring (12) along the circumference of the clamping body (1); Each of the discharge ports (16) is slidably provided with a push rod (17), the push rod (17) is used to abut against the inner side wall of the retainer, and the clamp body (1) is provided with an adjusting member for adjusting the position of each push rod (17); The adjusting component includes an adjusting screw (18), which passes through the clamping body (1) and is threadedly engaged with the clamping body (1), and the push rod (17) is rotatably sleeved on the corresponding adjusting screw (18); The cage is secured in all directions by using a multi-directional composite clamping method involving the inner diameter, outer diameter, and end face.

2. The fixture for machining pockets in an integral window-type retainer according to claim 1, characterized in that: The fixing structure includes locking bolts (15), and there are multiple locking bolts (15) that correspond one-to-one with the end face pressure plate (3). Each locking bolt (15) is threaded into the clamping body (1). The end face pressure plate (3) has a waist-shaped hole (32), and the locking bolt (15) passes through the waist-shaped hole (32) of the corresponding end face pressure plate (3).

3. The fixture for machining pockets in an integral window-type retainer according to claim 1, characterized in that: The fixing structure includes a mounting ring (4) and a limiting member. The mounting ring (4) is slidably disposed at the top of the clamping body (1) along the axial direction of the clamping body (1). Each end face pressure plate (3) is disposed on the mounting ring (4) and is distributed at equal intervals along the circumference of the mounting ring (4). The limiting member is used to prevent the mounting ring (4) from sliding.

4. The fixture for machining pockets in an integral window-type retainer according to claim 3, characterized in that: The clamping body (1) is provided with a support spring (52) for driving the mounting ring (4) to slide away from the top of the clamping body (1).

5. The fixture for machining pockets in an integral window-type retainer according to claim 3, characterized in that: The end face pressure plate (3) is slidably disposed on the mounting ring (4) in a direction close to or away from the central axis of the mounting ring (4), and the mounting ring (4) is provided with a driving mechanism for driving each end face pressure plate (3) to slide.

6. The fixture for machining pockets in an integral window-type retainer according to claim 5, characterized in that: The driving mechanism includes an elastic element (42), a driving ring (43), and a driving assembly. The elastic element (42) is provided in multiple ways and corresponds one-to-one with the end face pressure plate (3). The elastic element (42) is used to drive the corresponding end face pressure plate (3) to slide towards the central axis of the mounting ring (4). The driving ring (43) is coaxially rotatably mounted on the mounting ring (4). The side wall of the mounting ring (4) is provided with multiple driving blocks (431). The driving block (431) corresponds one-to-one with the end face pressure plate (3). The side wall of the driving block (431) is provided with a guide slope (432). The guide slope (432) abuts against the corresponding end face pressure plate (3) and is used to guide the corresponding end face pressure plate (3) to slide away from the central axis of the mounting ring (4). The driving assembly is used to drive the driving ring (43) to rotate.

7. The fixture for machining pockets in an integral window-type retainer according to claim 6, characterized in that: The drive assembly includes a worm gear (44), a worm (45), a transmission gear (46), and an arc-shaped toothed ring (47). The worm gear (44) and the worm (45) are rotatably mounted on the mounting ring (4), and the worm gear (44) meshes with the worm (45). The transmission gear (46) is coaxially fixedly connected to the worm gear (44). The arc-shaped toothed ring (47) is fixedly mounted on the drive ring (43), and the transmission gear (46) meshes with the arc-shaped toothed ring (47).

Images