A conical bearing inner assembly positioning device

Abstract

The application relates to the field of positioning of a conical bearing inner assembly, in particular to a conical bearing inner assembly positioning device which comprises two relatively openable and closable positioning molds, the two positioning molds are combined to form a mounting port for placing the inner assembly, the outer wall of the positioning mold towards the mounting port is provided with an abutting surface, the abutting surface comprises a mounting surface and a circular arc surface, the circular arc surface and the mounting surface are smoothly connected, the abutting surface is provided with a positioning groove for embedding the inner assembly roller, and the circular arc surface is used for abutting the inner assembly roller. The abutting surface of the positioning mold is optimized to be a composite surface composed of the mounting surface with the positioning groove and the circular arc surface with smooth transition, so that in the clamping process, the roller of the inner assembly can first contact the circular arc surface and slide along the circular arc surface to be guided, and finally accurately embedded into the positioning groove of the mounting surface, the progressive guidance and accurate positioning of the roller are realized, and the machining quality and the qualified rate of the product are greatly improved.

Description

Technical Field

[0001] This application relates to the field of positioning internal components of tapered bearings, and more particularly to a positioning device for internal components of tapered bearings. Background Technology

[0002] Tapered roller bearings are crucial fundamental components in mechanical transmissions, and the manufacturing quality of their internal components (composed of the inner ring, rollers, and cage) directly determines the overall performance and lifespan of the bearing. During manufacturing, to ensure that the rollers and cage do not detach and to form a precise initial clearance, the assembled internal components must undergo a riveting shrinkage process. This process is achieved by applying radial shrinkage and axial riveting forces to the cage in a specialized riveting die.

[0003] Currently, the positioning of internal components on riveting equipment largely relies on manual operation by workers. However, due to the unique structure of the internal components of tapered roller bearings, their positioning in the mold requires extremely high concentricity and axial positional accuracy, ensuring the consistency of positioning between the internal components and the riveting mold. Manual placement makes it difficult to accurately and quickly place the internal components at the theoretical center position of the mold every time, often requiring repeated adjustments. This makes the positioning process time-consuming and labor-intensive, becoming a bottleneck restricting the improvement of production efficiency.

[0004] Furthermore, the inaccuracy of manual positioning poses significant quality risks. If the internal components are placed eccentrically or tilted in the mold, the force will be unevenly applied during the pressing process of the riveting head. This may not only cause uneven plastic deformation of the cage and product scrap, but also pose a risk of damaging or even destroying the cage or rollers, seriously affecting the product qualification rate and production cost control. Utility Model Content

[0005] To improve production quality, this application provides a positioning device for the internal components of a tapered bearing.

[0006] The technical solution of the tapered bearing internal component positioning device provided in this application is as follows: A positioning device for an inner component of a tapered bearing includes two positioning molds that can open and close relative to each other. The two positioning molds enclose an installation opening for placing the inner component. The outer wall of each positioning mold facing the installation opening is provided as an abutment surface. The abutment surface includes an installation surface and an arc surface, which smoothly transitions to the installation surface. The abutment surface is provided with a positioning groove for inserting the inner component rollers, and the arc surface is used for the inner component rollers to abut against each other. By adopting the above technical solution, the contact surface of the positioning mold is optimized into a composite surface consisting of a mounting surface with a positioning groove and a smoothly transitioning arc surface. During the clamping process, the rollers of the inner components can first contact the arc surface and slide into the guide along it, and finally accurately embed into the positioning groove of the mounting surface. This achieves progressive guidance and precise positioning of the rollers, effectively avoiding damage to the roller surface caused by hard impacts. At the same time, it ensures the consistency of the position of all rollers in the circumferential and radial directions, providing a stable and reliable positioning reference for the subsequent riveting process, and greatly improving the processing quality and pass rate of the product.

[0007] Preferably, it also includes a pusher for conveying the inner component into the mounting port so that the inner component rollers abut against the arcuate surface.

[0008] By adopting the above technical solution, the pusher pushes the inner component to move, giving the inner component a force that abuts against the arc surface, so that when the two positioning molds approach each other, the roller rolls into the positioning groove along the arc surface, which facilitates installation and improves positioning efficiency.

[0009] Preferably, the pusher includes a conveyor belt, the distance of which the conveyor belt is to the mounting surface is less than the distance to the arc surface, and the conveyor belt is used to transport the inner component into the mounting opening so that the inner component rollers abut against the arc surface.

[0010] By adopting the above technical solution, the inner component can be automatically and continuously conveyed to the predetermined position, and its rollers can be accurately abutted against the guide arc surface of the positioning mold. The conveyor belt gives the inner component a forward force, and the positioning molds move closer together to give the inner component a backward force. Under the action of the front and rear forces, the inner component rollers roll into the positioning groove along the edge of the arc surface, close to the arc surface, and complete the positioning. The entire process from feeding and guiding to preliminary positioning is automated, completely replacing manual placement. This not only greatly improves production efficiency, but also eliminates the uncertainty of human operation through the repeatability accuracy of mechanical positioning, providing a stable and reliable guarantee for subsequent precise clamping and riveting.

[0011] Preferably, there are multiple positioning grooves, which are evenly spaced along the extension direction of the mounting surface and are circumferentially distributed.

[0012] By adopting the above technical solution, and by setting multiple positioning grooves at uniform intervals around the mounting surface, a precision positioning array that perfectly matches the distribution of the inner component's rollers is constructed. This ensures that all the rollers of the inner component are evenly embedded in their respective positioning grooves, thereby achieving precise constraint and synchronous positioning of the entire inner component around the circumference. This effectively prevents misalignment or uneven force on individual rollers, greatly improves the posture stability and positioning consistency of the inner component during riveting, and fundamentally guarantees the processing accuracy and product quality of riveting shrinkage.

[0013] Preferably, when the two positioning molds clamp the inner component, the diameter of the circle at the bottom of the positioning groove is equal to the diameter of the circle at the large end of the inner component's roller - a first preset value.

[0014] By adopting the above technical solution, the diameter of the circle at the bottom of the positioning groove is set to be slightly smaller than the diameter of the circle at the large end of the inner component roller, so that a precise micro-interference fit is formed between the positioning groove and the roller. This ensures that when clamping, all rollers are uniformly subjected to a small pre-tightening force in the circumference, thereby achieving strong circumferential constraint and precise centering of the inner component. This effectively eliminates the fit gap between the roller and the positioning groove, and prevents the inner component from slight rotation or displacement that may occur before and during riveting. This provides extremely high angular certainty and radial stability for the final riveting shrinkage process.

[0015] Preferably, when the two positioning molds clamp the inner component, the diameter of the circle containing the mounting surface is equal to the outer diameter of the large end of the inner component retainer plus a second preset value.

[0016] By adopting the above technical solution, the diameter of the circle containing the two mounting surfaces in the clamping state is set to be slightly larger than the outer diameter of the large end of the inner component cage. This forms a precise radial positioning gap between the mounting surface of the positioning mold and the outer wall of the cage, achieving non-contact radial positioning of the cage. This ensures that the clamping force is directly and effectively transmitted to the core force-bearing part of the inner ring through the rollers, avoiding deformation or damage to the cage due to direct pressure. It also provides room for thermal expansion or minor manufacturing tolerances of the cage during the clamping process. Thus, while achieving precise positioning, it perfectly protects the cage, a delicate and fragile component.

[0017] Preferably, the radius of the positioning groove is greater than the width of the inner component retainer window hole.

[0018] By adopting the above technical solution, the radius of the positioning groove is set to be greater than the width of the window opening of the inner component cage. This ensures that during clamping and positioning, the contact area between the roller and the positioning groove is completely restricted to the effective rolling surface of the roller itself. This avoids any form of interference or contact between the edge of the positioning groove and the edge of the cage window opening, effectively preventing structural damage to the cage caused by squeezing or scratching. While achieving precise positioning, it also provides crucial overload protection for the cage, further improving the safety and reliability of the entire positioning process.

[0019] Preferably, when the two positioning molds clamp the inner component, the radius of the arc surface is equal to one-third of the diameter of the circle where the bottom of the positioning groove is located, ± a third preset value.

[0020] By adopting the above technical solution, the radius of the guiding arc surface is set to approximately one-third of the diameter of the bottom circle of the positioning groove, providing an optimized curvature for the surface. This allows the roller to have a smoother and more natural entry angle and movement trajectory as it contacts and slides along the arc surface towards the positioning groove. This not only efficiently guides the roller into the positioning groove, effectively reducing jamming and friction, but also ensures a stable and controllable guiding process, avoiding roller misalignment, surface scratches, or impact bounces caused by sudden angle changes or inadequate guidance. Thus, a reliable foundation is laid for the final precise clamping during the dynamic guiding stage.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By optimizing the contact surface of the positioning mold into a composite surface consisting of a mounting surface with a positioning groove and a smoothly transitioning arc surface, the rollers of the inner components can first contact the arc surface and slide into the guide along it during the clamping process, and finally accurately embed into the positioning groove of the mounting surface. This achieves progressive guidance and precise positioning of the rollers, effectively avoiding damage to the roller surface caused by hard impacts, while ensuring the positional consistency of all rollers in the circumferential and radial directions. This provides a stable and reliable positioning reference for the subsequent riveting process, greatly improving the processing quality and pass rate of the product. 2. By setting the diameter of the circle containing the two mounting surfaces in the clamped state to be slightly larger than the outer diameter of the large end of the inner component cage, a precise radial positioning gap is formed between the mounting surface of the positioning mold and the outer wall of the cage. This achieves non-contact radial positioning of the cage, ensuring that the clamping force is directly and effectively transmitted to the core force-bearing part of the inner ring through the rollers, avoiding deformation or damage to the cage due to direct pressure. It also provides room for thermal expansion or minor manufacturing tolerances of the cage during the clamping process, thus perfectly protecting this delicate and fragile component of the cage while achieving precise positioning. 3. It can automatically and continuously transport the inner components to the predetermined position and ensure that its rollers can accurately abut against the guide arc surface of the positioning mold. The conveyor belt gives the inner components a forward force, and the positioning molds move closer together to give the inner components a backward force. Under the action of the front and rear forces, the inner components' rollers roll into the positioning groove along the edge of the arc surface, thus completing the positioning. It realizes full automation from feeding and guiding to initial positioning, completely replacing manual placement. This not only greatly improves production efficiency, but also eliminates the uncertainty of human operation through the repeatability accuracy of mechanical positioning, providing a stable and reliable guarantee for subsequent precise clamping and riveting. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a positioning device for an internal component of a tapered bearing.

[0023] Figure 2This is a schematic diagram of the overall structure of the clamping component.

[0024] Figure 3 This is a schematic diagram of the overall structure of the pusher component.

[0025] Explanation of reference numerals in the attached drawings: 1. Clamping component; 11. Clamping cylinder; 111. First clamping arm; 112. Second clamping arm; 12. Positioning mold; 121. Mounting port; 122. Abutting surface; 1221. Mounting surface; 1222. Arc surface; 1223. Positioning groove; 2. Platform; 3. Pushing component; 31. Support rod; 32. Rotating roller; 33. Conveyor belt; 34. Conveyor motor; 4. Transfer component; 41. Linear motor; 42. Connecting plate. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a positioning device for an internal component of a tapered bearing. (Refer to...) Figure 1 A positioning device for the inner component of a tapered bearing includes a clamping member 1, a platform 2, a pushing member 3, and a transfer member 4, all of which are mounted on the platform 2. The inner component is fed from the pushing member 3, which then transports it to the clamping member 1. The clamping member 1 adjusts its position while clamping the inner component, and the transfer member 4 moves the entire clamping member 1 along with the inner component to the processing area. This eliminates the positional deviation and efficiency bottleneck caused by manual placement and avoids the risk of product damage due to inaccurate positioning.

[0028] Reference Figure 2 The clamping component 1 includes a clamping cylinder 11 and a positioning mold 12. The clamping cylinder 11 is provided with a first clamping arm 111 and a second clamping arm 112 that can be opened and closed relative to each other. The positioning mold 12 is located between the first clamping arm 111 and the second clamping arm 112. There are two positioning molds 12. The two positioning molds 12 are respectively fixedly connected to the first clamping arm 111 and the second clamping arm 112. The two positioning molds 12 together form an installation opening 121, which is used for placing the internal components. The outer wall of the positioning mold 12 facing the mounting opening 121 is designated as an abutment surface 122. The abutment surface 122 includes a mounting surface 1221 and an arc surface 1222. The arc surface 1222 is located on the side of the mounting surface 1221 near the cylinder body of the clamping cylinder 11. The arc surface 1222 and the mounting surface 1221 transition smoothly. The mounting surface 1221 is provided with positioning grooves 1223 for the inner component rollers to be embedded in, and the arc surface 1222 is used for the inner component rollers to abut against each other. Multiple positioning grooves 1223 are provided, evenly spaced along the extension direction of the mounting surface 1221, and circumferentially distributed. The clamping cylinder 11 is configured as a pneumatic gripper.

[0029] When the two positioning molds 12 clamp the inner component, the diameter of the circle at the bottom of the positioning groove 1223 is equal to the diameter of the circle at the large end of the inner component roller - X1, where X1 is the first preset value; the diameter of the circle at the mounting surface 1221 is equal to the outer diameter of the large end of the inner component retainer + X2, where X2 is the second preset value; the radius of the arc surface 1222 is equal to one-third of the diameter of the circle at the bottom of the positioning groove 1223 ± X3, where X3 is the third preset value; the radius of the positioning groove 1223 is equal to the width of the window hole of the inner component retainer + X4, where X4 is the fourth preset value; the value range of X1 is 0.1-0.6mm, the value range of X2 is 0.1-0.6mm, the value range of X3 is 0.1-0.6mm, and the value range of X4 is 1-3mm. The values ​​of X1, X2, and X3 can be equal or unequal.

[0030] Reference Figure 1 and Figure 3 The pushing component 3 includes a support rod 31, a rotating roller 32, a conveyor belt 33, and a conveyor motor 34. The support rod 31 is fixedly connected to the platform 2. There are two support rods 31, which are parallel to each other. The rotating roller 32 is located between the two support rods 31. The rotation axis of the rotating roller 32 is perpendicular to the length direction of the support rod 31. The two ends of the rotating roller 32 are respectively rotatably connected to the two support rods 31 around their own axes. There are two rotating rollers 32, which are respectively close to the two ends of the length direction of the support rods 31. The conveyor belt 33 is sleeved on the outer periphery of the two rotating rollers 32. The motor shaft of the conveyor motor 34 is coaxially fixedly connected to one of the rotating rollers 32. The conveying direction of the conveyor belt 33 is horizontal and perpendicular to the sliding direction of the first clamping arm 111, and parallel to the sliding direction of the transfer component 4 driving the clamping cylinder 11. The conveyor belt 33 is used to transport the inner component to the mounting port 121 so that the inner component roller abuts against the arc surface 1222.

[0031] Reference Figure 1 The transfer component 4 includes a linear motor 41 and a connecting plate 42. The cylinder of the linear motor 41 is fixedly connected to the upper end of the platform 2, and the slide of the linear motor 41 is fixedly connected to the connecting plate 42. The cylinder of the clamping cylinder 11 is fixedly connected to the connecting plate 42. The sliding direction of the slide of the linear motor 41 is parallel to the conveying direction of the conveyor belt 33.

[0032] The implementation principle of the tapered bearing inner component positioning device in this application embodiment is as follows: the conveyor belt 33 automatically and continuously transports the inner component to a predetermined position, ensuring that its rollers accurately abut against the guide arc surface 1222 of the positioning mold 12. The conveyor belt 33 applies a forward force to the inner component, and the clamping action of the clamping cylinder 11 applies a backward force to the inner component. Under the action of the forward and backward forces, the inner component rollers, close to the arc surface 1222, roll along the edge of the arc surface 1222 into the positioning groove 1223, completing the positioning. In the clamped state, the two mounting surfaces 1221 are located... The diameter of the circle is set to be slightly larger than the outer diameter of the large end of the inner component cage, thereby forming a precise radial positioning gap between the mounting surface 1221 of the positioning mold 12 and the outer wall of the cage. This achieves non-contact radial positioning of the cage, ensuring that the clamping force is directly and effectively transmitted to the core force-bearing part of the inner ring through the rollers, avoiding deformation or damage to the cage due to direct pressure. It also provides room for thermal expansion or minor manufacturing tolerances of the cage during the clamping process, thus perfectly protecting this delicate and fragile component of the cage while achieving precise positioning.

[0033] 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 positioning device for an inner component of a tapered bearing, characterized in that: It includes two positioning molds (12) that can be opened and closed relative to each other. The two positioning molds (12) together form an installation opening (121). The installation opening (121) is used for placing the inner component. The outer wall of the positioning mold (12) facing the installation opening (121) is set as an abutment surface (122). The abutment surface (122) includes an installation surface (1221) and an arc surface (1222). The arc surface (1222) and the installation surface (1221) are smoothly transitioned. The abutment surface (122) is provided with a positioning groove (1223). The positioning groove (1223) is used for the inner component roller to be embedded. The arc surface (1222) is used for the inner component roller to abut.

2. The positioning device for an inner component of a tapered bearing according to claim 1, characterized in that: It also includes a pusher (3) for conveying the inner component into the mounting port (121) so that the inner component rollers abut against the arc surface (1222).

3. The positioning device for an inner component of a tapered bearing according to claim 2, characterized in that: The pusher (3) includes a conveyor belt (33) at a distance from the mounting surface (1221) to the arc surface (1222) less than the distance to the arc surface (1222). The conveyor belt (33) is used to transport the inner component into the mounting port (121) so that the inner component rollers abut against the arc surface (1222).

4. The positioning device for an inner component of a tapered bearing according to claim 1, characterized in that: The positioning groove (1223) is provided in multiple ways. The multiple positioning grooves (1223) are evenly spaced along the extension direction of the mounting surface (1221) and are circumferentially distributed.

5. The positioning device for an inner component of a tapered bearing according to claim 4, characterized in that: When the two positioning molds (12) clamp the inner component, the diameter of the circle at the bottom of the positioning groove (1223) is equal to the diameter of the circle at the large end of the inner component roller - the first preset value.

6. The positioning device for an inner component of a tapered bearing according to claim 4, characterized in that: When the two positioning molds (12) clamp the inner component, the diameter of the circle containing the mounting surface (1221) is equal to the outer diameter of the large end of the inner component retainer plus a second preset value.

7. A positioning device for an inner component of a tapered bearing according to claim 4, characterized in that: The radius of the positioning groove (1223) is greater than the width of the inner component retainer window hole.

8. A positioning device for an inner component of a tapered bearing according to claim 4, characterized in that: When the two positioning molds (12) clamp the inner component, the radius of the arc surface (1222) is one-third of the diameter of the circle where the bottom of the positioning groove (1223) is located, ± the third preset value.

Images