Bearing clamping mechanism and press fitting system

Abstract

The invention relates to a bearing clamping mechanism and a press fitting system. The bearing clamping mechanism comprises an outer ring unit and an inner ring unit. The outer ring unit comprises a base and a plurality of outer clamping jaws, the outer clamping jaws are arranged on the base, and the outer clamping jaws can contract towards the central axis of the base or expand away from the central axis of the base so as to abut against or be away from the outer circumferential face of a target bearing; the inner ring unit is located in an area defined by the multiple outer clamping jaws and comprises a pressing plate, a pushing plate and multiple inner supports. The pressing plate is arranged on the base and can move along the central axis of the base so that the pressing plate can be matched with the outer clamping jaw to clamp the target bearing or loosen the target bearing. The push plate is arranged on the side, away from the base, of the pressing plate and can move along the central axis of the base. The inner supports are arranged on the side, away from the pressing plate, of the push plate, and the multiple inner supports can contract towards the central axis of the base or expand away from the central axis of the base so as to be away from or abut against the inner circumferential face of the target bearing.

Description

Technical Field

[0001] This application relates to the field of press-fitting technology, and in particular to a bearing clamping mechanism and press-fitting system. Background Technology

[0002] During the bearing press-fitting process for rail vehicle wheelsets, the bearings need to be transferred from the conveyor line to the piston rod of the press-fitting machine's cylinder. Traditionally, there are two main methods for bearing installation: Method one is manual installation. The main problem with this method is that rail vehicle wheelsets use double-row roller bearings, which are heavy, complex in structure, and have internal movable spacers. Considering that the inner diameter of the bearing's inner ring is close to the outer diameter of the cylinder piston rod, with a clearance of less than 0.5mm, manual installation requires workers to reach inside the bearing to adjust the spacer position to ensure successful installation. However, due to the large weight of the bearing, manual handling is time-consuming and labor-intensive, resulting in low work efficiency. Method two involves pre-installing a nylon guide sleeve inside the bearing or on the piston rod. The outer diameter of the nylon guide sleeve is the same as the inner diameter of the bearing. The main problems with this method are: the front end of the nylon guide sleeve needs a large chamfer to guide the inner spacer of the bearing. This requires the nylon guide sleeve to have a certain thickness, which reduces the diameter of the cylinder piston rod. This makes it impossible for the piston rod to meet the load requirements of heavy locomotive wheelsets. Furthermore, if the bearing spacer becomes seriously misaligned with the bearing inner ring due to vibration or other reasons, the chamfer of the nylon sleeve cannot adjust the position of the spacer to make it concentric with the bearing inner ring. Summary of the Invention

[0003] Therefore, it is necessary to provide a bearing clamping mechanism and pressing system to address the aforementioned technical problems.

[0004] A bearing clamping mechanism, characterized in that it comprises:

[0005] The outer ring unit includes a base and multiple outer jaws, the outer jaws being disposed on the base. The multiple outer jaws can retract toward or extend away from the central axis of the base to abut against or move away from the outer peripheral surface of the target bearing; and

[0006] The inner ring unit, located within the area enclosed by the multiple outer grippers, includes a pressure plate, a push plate, and multiple inner supports. The pressure plate is disposed on the base and can move along the central axis of the base to cooperate with the outer grippers to clamp or release the target bearing. The push plate is disposed on the side of the pressure plate away from the base and can move along the central axis of the base. The inner supports are disposed on the side of the push plate away from the pressure plate, and the multiple inner supports can retract toward the central axis of the base or expand away from the central axis of the base to move away from or abut against the inner circumferential surface of the target bearing.

[0007] In one embodiment, the outer ring unit further includes an adapter plate for rotatably mounting the base and a guide frame disposed on the adapter plate; the guide frame and the outer gripper are located on the same side of the base, and the outer gripper is movably disposed on the guide frame;

[0008] When the base rotates, the base can push multiple external grippers to move synchronously along the guide frame toward or away from the central axis of the base.

[0009] In one embodiment, the outer gripper is sleeved on the guide frame via a sliding sleeve, and a follower block is provided on the side of the sliding sleeve near the base;

[0010] The base is provided with a plurality of sliding grooves along its circumference, the sliding grooves being used to accommodate the corresponding follower blocks, wherein the distance L between the sliding grooves and the central axis of the base gradually decreases or increases along the rotation direction of the base.

[0011] In one embodiment, the guide frame has a first mounting surface facing away from the base, and the sliding sleeve has a second mounting surface opposite to the first surface. One of the first mounting surface and the second mounting surface is provided with an outer slide rail, and the other is provided with an outer slider. The outer slide rail extends radially along the base, and the side of the outer slider facing the outer slide rail is provided with an outer receiving groove for accommodating the outer slide rail.

[0012] In one embodiment, the outer ring unit further includes a base drive member disposed on the adapter plate and located on the side of the base opposite to the guide frame, the base drive member being used to drive the base to rotate; and / or,

[0013] The outer ring unit also includes a pressure plate drive component, which is disposed on the side of the guide frame opposite to the base and is used to drive the pressure plate to move along the central axis of the base.

[0014] In one embodiment, the inner ring unit further includes a linkage, which is located on the side of the push plate opposite to the pressure plate and connected to all the inner supports;

[0015] The linkage is used to drive the remaining inner supports to move synchronously toward or away from the central axis of the base when one of the inner supports moves toward or away from the central axis of the base.

[0016] In one embodiment, the linkage includes a turntable and a plurality of connecting rods, the turntable being rotatably mounted on the push plate, and the two ends of the connecting rods being hinged to the turntable and the corresponding inner support, respectively.

[0017] In one embodiment, one of the inner support near the push plate and the other of the push plate away from the pressure plate is provided with an inner slide rail, and the other is provided with an inner slider. The inner slide rail extends radially along the push plate, and the inner slider has a content groove for accommodating the inner slide rail on the side facing the inner slide rail.

[0018] In one embodiment, the inner ring unit further includes an inner support drive member disposed on the side of the push plate opposite to the inner support, and used to drive one of the inner supports to move toward or away from the central axis of the base.

[0019] In one embodiment, the inner ring unit further includes a push plate drive member disposed on the pressure plate and used to drive the push plate to move along the central axis of the base.

[0020] A press-fitting system includes a robotic arm, a press-fitting machine, and a bearing clamping mechanism as described in any of the preceding claims. The robotic arm is connected to the outer ring unit of the bearing clamping mechanism, and the robotic arm is used to cooperate with the bearing clamping mechanism to install a target bearing onto the press-fitting machine.

[0021] The aforementioned bearing clamping mechanism and press-fitting system achieve radial fixation of the double-row roller bearing through the cooperation of the outer jaws of the outer ring unit and the inner support of the inner ring unit, and axial fixation of the double-row roller bearing through the cooperation of the outer jaws of the outer ring unit and the pressure plate of the inner ring unit. This ensures that the bearing is stably fixed on the bearing clamping mechanism, preventing the bearing from shaking during installation and guaranteeing the concentricity of the bearing's inner ring and spacer ring. This provides convenient conditions for the bearing to be fitted onto the piston rod of the hydraulic cylinder without manual intervention. Furthermore, when the piston rod of the hydraulic cylinder contacts the end face of the inner support away from the push plate, the push plate of the inner ring unit can move towards the pressure plate, allowing the bearing spacer ring to automatically move onto the piston rod without the need for additional nylon sleeves, thus improving work efficiency and convenience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the bearing clamping mechanism provided in one embodiment of this application.

[0023] Figure 2 for Figure 1 A side view of the provided bearing clamping mechanism.

[0024] Figure 3 for Figure 1 A schematic diagram of the outer ring unit of the provided bearing clamping mechanism from a first angle.

[0025] Figure 4 for Figure 1 A schematic diagram of the outer ring unit of the provided bearing clamping mechanism from a second angle.

[0026] Figure 5 for Figure 1 A schematic diagram of the inner ring unit of the provided bearing clamping mechanism from a first angle.

[0027] Figure 6 for Figure 1 A schematic diagram of the inner ring unit of the provided bearing clamping mechanism from a second angle.

[0028] Figure 7 for Figure 1 A schematic diagram of the inner ring unit of the provided bearing clamping mechanism from a third-angle perspective.

[0029] Figure 8 Figure 1 A schematic diagram of the bearing clamping mechanism when clamping the target bearing, viewed from a first angle.

[0030] Figure 9 Figure 1 A schematic diagram of the bearing clamping mechanism when clamping the target bearing, viewed from a second angle.

[0031] The labels in the attached diagram are explained as follows:

[0032] 10. Bearing clamping mechanism; 100. Outer ring unit; 110. Base; 110a. Slide groove; 120. Outer gripper; 121. Sliding sleeve; 1211. Follower block; M. Central axis; 130. Adapter plate; 140. Guide frame; 150. Outer slide rail; 160. Outer slider; 170. Base drive component; 180. Pressure plate drive component; 190. Sensor; 200. Inner ring unit; 210. Pressure plate; 220. Push plate; 230. Inner support; 240. Linkage component; 241. Turntable; 242. Connecting rod; 250. Inner slide rail; 260. Inner slider; 270. Inner support drive component; 280. Push plate drive component; Q. Bearing; Q1. Outer circumferential surface; Q2. Inner circumferential surface. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] like Figure 1 and Figure 2 As shown, one embodiment of this application provides a bearing clamping mechanism 10, which is used to clamp a target bearing, thereby enabling it to cooperate with other equipment for corresponding operations, such as mounting the target bearing onto the piston rod of a press-fitting machine and pressing the target part using the press-fitting machine. The target bearing can be a cylindrical structure with inner and outer circumferential surfaces. Such target bearings may include, but are not limited to, bearings Q, such as double-row roller bearings. The double-row roller bearing Q may include an outer ring, two inner rings, and multiple rollers. The two inner rings are axially disposed inside the outer ring, and a spacer ring separates the two inner rings. The rollers are disposed between the outer ring and the corresponding inner ring. It should be noted that the outer circumferential surface of the outer ring forms the outer circumferential surface Q1 of the bearing Q, and the inner circumferential surface of the inner ring and the inner circumferential surface of the spacer ring form the inner circumferential surface Q2 of the bearing Q. Considering the large weight of the double-row roller bearing Q, the bearing clamping mechanism 10 can cooperate with the robotic arm to install the double-row roller bearing Q onto the piston rod of the hydraulic cylinder of the press machine. Before clamping, the outer ring unit 100 of the bearing clamping mechanism 10 can be installed on the robotic arm. Specifically, the base 110 of the outer ring unit 100 is connected to the end of the robotic arm.

[0040] Furthermore, such as Figure 1 and Figure 2 As shown, the bearing clamping mechanism 10 may include an outer ring unit 100 and an inner ring unit 200; as Figures 1 to 4 As shown, the outer ring unit 100 includes a base 110 and multiple outer jaws 120. The outer jaws 120 are disposed on the base 110. The multiple outer jaws 120 can retract toward the central axis M or expand away from the central axis M to abut or move away from the outer peripheral surface of the target bearing. The inner ring unit 200 is located within the area enclosed by the multiple outer jaws 120, and as shown... Figure 1 , Figure 2 and Figures 5 to 7As shown, it includes a pressure plate 210, a push plate 220, and multiple inner supports 230; the pressure plate 210 is disposed on the base 110 and can move along the central axis M of the base 110 so as to cooperate with the outer gripper 120 to clamp or release the target bearing; the push plate 220 is disposed on the side of the pressure plate 210 away from the base 110 and can move along the central axis M of the base 110; the inner supports 230 are disposed on the side of the push plate 220 away from the pressure plate 210, and the multiple inner supports 230 can retract toward the central axis M of the base 110 or expand away from the central axis M of the base 110 so as to move away from or abut against the inner circumferential surface of the target bearing.

[0041] The following description uses a double-row roller bearing Q as an example to illustrate how the bearing clamping mechanism 10 installs the double-row roller bearing Q onto the piston rod of the hydraulic cylinder of the press-fitting machine:

[0042] Before clamping, the multiple outer clamping jaws 120 are unfolded away from the central axis M of the base 110 (i.e., unfolded outwards), and the multiple inner supports 230 are retracted towards the central axis M of the base 110 (i.e., retracted inwards). During clamping, the push plate 220 and inner supports 230 of the inner ring unit 200 are first inserted into the bearing Q, and the outer clamping jaws 120 of the outer ring unit 100 are arranged around the bearing Q. Then, the multiple outer clamping jaws 120 of the outer ring unit 100 are retracted towards the central axis M of the base 110 until the outer clamping jaws 120 contact and clamp with the outer peripheral surface Q1 of the outer ring of the bearing Q; the pressure plate 210 is moved towards the push plate 220 until the pressure plate 210 contacts the first end face of the bearing Q, and then the bearing Q is pushed by the pressure plate 210 until the second end face of the bearing Q abuts against the fingertip of the outer clamping jaw 120. At this time, the bearing Q is fixed between the bearing Q pressure plate 210 and the fingertip of the outer clamping jaw 120, thus achieving axial fixation. Then, unfold the inner support 230 of the inner ring structure away from the central axis M of the base 110 until it contacts the inner ring and the inner circumferential surface Q2 of the bearing Q. Figure 8 and Figure 9 As shown, the positioning and clamping of bearing Q is completed.

[0043] Then, the robotic arm moves the bearing clamping mechanism 10, carrying the bearing Q, to the cylinder position of the press machine, and fits the bearing Q onto the piston rod of the press machine's cylinder until the end face of the inner support 230 of the inner ring unit 200 contacts the end face of the cylinder piston rod. The robotic arm then continues to move the bearing clamping mechanism 10 along the cylinder piston rod. When the cylinder piston rod contacts the end face of the inner support 230 away from the push plate 220, the push plate 220 moves towards the pressure plate 210 until the spacer ring of the bearing Q moves onto the piston rod. Finally, the bearing clamping mechanism 10 releases the bearing Q and retracts, then moves the outer jaw 120 of the outer ring unit 100 towards the central axis M of the base 110 until the fingertips of the outer jaw 120 contact the end face of the bearing Q. The robotic arm then pushes the bearing Q to continue moving along the piston rod until the bearing Q is completely fitted onto the cylinder piston rod.

[0044] As can be seen, the bearing clamping mechanism 10 provided in this embodiment can achieve radial fixation of the double-row roller bearing Q through the cooperation of the outer clamping jaw 120 of the outer ring unit 100 and the inner support 230 of the inner ring unit 200, and can achieve axial fixation of the double-row roller bearing Q through the cooperation of the outer clamping jaw 120 of the outer ring unit 100 and the pressure plate 210 of the inner ring unit 200. In this way, the bearing Q can be stably fixed on the bearing clamping mechanism 10, ensuring that the bearing Q does not wobble during installation, thereby ensuring the concentricity of the inner ring and the spacer of the bearing Q, providing convenient conditions for the bearing Q to be fitted into the piston rod of the hydraulic cylinder without manual intervention; and when the piston rod of the hydraulic cylinder contacts the end face of the inner support 230 away from the push plate 220, the push plate 220 of the inner ring unit 200 can move toward the pressure plate 210, so that the spacer of the bearing Q can be automatically moved onto the piston rod without the need for manual assistance of an additional nylon sleeve, improving work efficiency and convenience.

[0045] In some embodiments, such as Figure 3 and Figure 4 As shown, the outer ring unit 100 also includes an adapter plate 130 for rotatably mounting the base 110 and a guide frame 140 disposed on the adapter plate 130; the guide frame 140 and the outer grippers 120 are located on the same side of the base 110, and the outer grippers 120 are movably disposed on the guide frame 140; when the base 110 rotates, the base 110 can push multiple outer grippers 120 to move synchronously along the guide frame 140 toward or away from the central axis M of the base 110. When it is necessary for the outer grippers 120 to retract inward or expand outward, only the base 110 needs to be driven to rotate, without driving each outer gripper 120 to move, which can improve work efficiency and convenience.

[0046] Among them, such as Figure 4 As shown, the adapter plate 130 can be cylindrical and can be connected to the end effector of the robotic arm. The connection method between the adapter plate 130 and the robotic arm can be configured as needed. For example, as shown... Figure 4As shown, a flange may be provided on the side of the adapter plate 130 away from the outer gripper 120, and the flange is connected to the end of the robotic arm.

[0047] Guide frame 140 Figure 3 It can be roughly radial in shape, and the center of the guide frame 140 can be connected to the adapter plate 130. The radial part of the guide frame 140 is used for the movable installation of the outer gripper 120.

[0048] Furthermore, in one embodiment, as Figure 3 As shown, the outer gripper 120 is sleeved on the guide frame 140 via a sliding sleeve 121. A follower block 1211 is provided on the side of the sliding sleeve 121 near the base 110. The base 110 has multiple grooves 110a along its circumference, which accommodate the corresponding follower blocks 1211. The distance L between the groove 110a and the central axis M of the base 110 gradually decreases or increases along the rotation direction of the base 110. Through the constraint of the grooves 110a and the guide frame 140, the sliding sleeve 121 can only move towards or away from the central axis M of the base 110, carrying the outer gripper 120.

[0049] It should be noted that the sliding sleeve 121, the sliding groove 110a, and the outer clamping jaw 120 correspond one-to-one, meaning that the quantity and position of these three are identical. The quantity of these three can be adjusted as needed, as long as they can effectively clamp the outer peripheral surface Q1 of the target part. For example, such as... Figure 3 As shown, the outer ring unit 100 has three outer grippers 120, and correspondingly, there are also three sliding sleeves 121 and three sliding grooves 110a. The positions of these three components can be evenly arranged along the circumference of the base 110, which ensures that the outer ring unit 100 can firmly clamp the outer peripheral surface Q1 of the target part.

[0050] To make the outer gripper 120 slide more smoothly, such as Figure 3 As shown, the guide frame 140 has a first mounting surface facing away from the base 110, and the sliding sleeve 121 has a second mounting surface opposite to the first surface. One of the first and second mounting surfaces is provided with an outer slide rail 150, and the other with an outer slider 160. The outer slide rail 150 extends radially along the base 110, and the side of the outer slider 160 facing the outer slide rail 150 has an outer receiving groove for accommodating the outer slide rail 150. As an example, the first mounting surface is provided with the outer slide rail 150, and the second surface is provided with the outer slider 160.

[0051] In some embodiments, such as Figure 3 and Figure 4As shown, the outer ring unit 100 also includes a base drive component 170. The base drive component 170 is disposed on the adapter plate 130 and located on the side of the base 110 opposite to the guide frame 140. The base drive component 170 is used to drive the base 110 to rotate. By driving the base 110 to rotate through the base drive component 170, the multiple outer grippers 120 can be retracted inward or extended outward without human intervention, which can improve the automation level of the entire bearing gripping mechanism 10. It should be noted again that this bearing gripping mechanism 10 can realize the inward retraction or outward extension of the outer grippers 120 by only using the drive of one base drive component 170, which can simplify the structure of the bearing gripping mechanism 10 and reduce the cost of use.

[0052] Optionally, the base drive component 170 may include a drive motor, the housing of which is mounted on the outer peripheral surface Q1 of the adapter plate 130. The output shaft of the drive motor may be equipped with a driving gear, and a driven gear is provided on the side of the base 110 opposite to the support. The driven gear meshes with the driving gear. When the drive motor is operating, the rotation of the base 110 is achieved through the transmission between the driven and driving gears. The driven and driving gears can be configured as gear structures or rack structures as needed. For example, the driving gear is configured as a gear structure, and the driven gear is configured as a rack structure.

[0053] In some embodiments, such as Figure 3 As shown, at least one outer gripper 120 is equipped with a sensor 190. The sensor 190 is used to detect whether the outer gripper 120 has gripped the target bearing and sends the detection result to the backend. When the sensor 190 detects that the outer gripper 120 has gripped the target bearing, the backend sends a stop command to the drive motor. The drive motor stops running based on the stop command, thereby protecting the outer gripper 120 and the target bearing. The sensor 190 can be a pressure sensor.

[0054] In some embodiments, such as Figure 3 As shown, the outer ring unit 100 also includes a pressure plate drive 180, which is disposed on the side of the guide frame 140 opposite to the base 110, and is used to drive the pressure plate 210 to move along the central axis M of the base 110. By driving the pressure plate 210 to move through the pressure plate drive 180, no human intervention is required, which can improve the automation level of the entire bearing clamping mechanism 10.

[0055] Optionally, the pressure plate drive 180 may include a power cylinder, the cylinder body of which is supported on the guide frame 140 by a mounting bracket, and the piston rod of the power cylinder is connected to the pressure plate 210. The power cylinder may be a hydraulic cylinder or a pneumatic cylinder.

[0056] In some embodiments, such as Figure 5 and Figure 6As shown, the inner ring unit 200 also includes a linkage 240, which is located on the side of the push plate 220 away from the pressure plate 210 and connected to all the inner supports 230. The linkage 240 is used to drive the remaining inner supports 230 to move synchronously toward or away from the central axis M of the base 110 when one of the inner supports 230 moves toward or away from the central axis M of the base 110. When the inner supports 230 need to retract inward or expand outward, only one inner support 230 needs to be driven through the linkage 240, without having to drive all the inner supports 230, which can improve work efficiency and convenience.

[0057] The inner support 230 may include a sliding part and a supporting part connected together. The sliding part is connected to the linkage 240, and the supporting part is used to abut against the inner circumferential surface of the target bearing. The surface of the supporting part away from the central axis M of the base 110 is an arc surface. Since the inner surface of the bearing Q is usually an arc surface, setting the surface of the supporting part away from the central axis M of the base 110 to also be an arc surface allows the supporting part of the inner support 230 to better abut against the inner surface of the bearing Q.

[0058] In one embodiment, such as Figure 5 and Figure 6 As shown, the linkage 240 includes a turntable 241 and multiple connecting rods 242. The turntable 241 is rotatably mounted on the push plate 220, and the two ends of the connecting rods 242 are hinged to the turntable 241 and the corresponding inner support 230, respectively. This linkage 240 has a simple structure and high transmission efficiency.

[0059] It should be noted that the number of connecting rods 242 should be the same as the number of inner supports 230, and the arrangement of the connecting rods 242 is also related to the number of inner supports 230. For example, such as Figure 6 As shown, if there are 3 internal supports 230, then there are also 3 connecting rods 242, and these 3 connecting rods 242 are arranged in a triangular shape; again, if there are 4 internal supports 230, then there are also 4 connecting rods 242, and these 4 connecting rods 242 are arranged in a quadrilateral shape.

[0060] The turntable 241 can be rotatably mounted on the push plate 220 using bearing Q, which facilitates the transmission of the linkage 240.

[0061] To ensure that the inner support 230 can move toward or away from the central axis M of the base 110 under the linkage of the linkage 240, such as Figure 5 As shown, in some embodiments, one of the inner support 230 near the push plate 220 and the side of the push plate 220 away from the pressure plate 210 is provided with an inner slide rail 250, and the other is provided with an inner slider 260. The inner slide rail 250 extends radially along the push plate 220, and the side of the inner slider 260 facing the inner slide rail 250 is provided with a content groove for accommodating the inner slide rail 250.

[0062] As an example, the inner support 230 is provided with an inner slider 260 on the side near the push plate 220 (i.e., the sliding part of the inner support 230 mentioned above), and the push plate 220 is provided with an inner slide rail 250 on the side away from the pressure plate 210.

[0063] In some embodiments, such as Figure 7 As shown, the inner ring unit 200 also includes an inner support drive member 270, which is disposed on the side of the push plate 220 opposite to the inner support 230, and is used to drive one of the inner supports 230 to move toward or away from the central axis M of the base 110. Driving one of the inner supports 230 toward or away from the central axis M of the base 110 by the inner support drive member 270 requires no human intervention, thus improving the automation level of the entire bearing clamping mechanism 10.

[0064] Optionally, the inner support drive member 270 may include a power cylinder, the cylinder body of which is mounted on the push plate 220, and the piston rod of which is connected to the sliding portion of one of the inner supports 230. The power cylinder can be a hydraulic cylinder or a pneumatic cylinder. For example... Figure 5 As shown, the pressure plate 210 has a notch 210a, which is used for the air or oil passage of the inner support drive member 270.

[0065] In some embodiments, such as Figure 5 As shown, the inner ring unit 200 also includes a push plate drive 280, which is disposed on the pressure plate 220 and is used to drive the push plate 220 to move along the central axis M of the base 110. By driving the push plate 220 through the push plate drive 280, no human intervention is required, which can improve the automation level of the entire bearing clamping mechanism 10.

[0066] The push plate drive component 280 includes a power cylinder. The cylinder body of the power cylinder is located on the side of the pressure plate 220 opposite to the push plate 220, and the piston rod of the power cylinder is connected to the push plate 220. When the piston rod of the hydraulic cylinder of the press machine contacts the end face of the inner support 230 opposite to the push plate 220, the one-way valve of the power cylinder of the push plate drive component 280 opens, and the robotic arm, carrying the gripper 120, continues to move along the piston rod of the power cylinder of the push plate drive component 280. The inner support 230 retracts under the reaction force of the piston rod of the power cylinder of the push plate drive component 280 until the piston rod of the power cylinder of the push plate drive component 280 is fully retracted. At this time, the spacer ring inside the bearing Q moves onto the piston rod of the press machine.

[0067] The power cylinder can be a hydraulic cylinder or a pneumatic cylinder. The number of power cylinders can be set according to requirements; for example, such as... Figure 5 As shown, the inner ring unit 200 is equipped with two power cylinders, which are symmetrically distributed on both sides of the central axis M of the base 110.

[0068] In summary, the bearing clamping mechanism 10 provided above can automatically install the bearing Q onto the piston rod of the hydraulic cylinder of the press machine. The entire installation process does not require manual intervention, truly achieving unmanned and automated operation, improving efficiency, and requiring no additional tools, thus enhancing work efficiency and convenience.

[0069] On the other hand, one embodiment of this application also provides a press-fitting system, which includes a robotic arm, a press-fitting machine, and a bearing clamping mechanism 10 as described in any of the present claims. The robotic arm is connected to the outer ring unit 100 of the bearing clamping mechanism 10, and the robotic arm is used to cooperate with the bearing clamping mechanism 10 to install the target bearing onto the press-fitting machine.

[0070] The press-fitting system provided in this embodiment can achieve radial fixation of the double-row roller bearing Q by cooperating with the outer jaw 120 of the outer ring unit 100 and the inner support 230 of the inner ring unit 200, and can achieve axial fixation of the double-row roller bearing Q by cooperating with the outer jaw 120 of the outer ring unit 100 and the pressure plate 210 of the inner ring unit 200. In this way, the bearing Q can be stably fixed on the bearing clamping mechanism 10, ensuring that the bearing Q does not wobble during installation, thereby ensuring the concentricity of the inner ring and the spacer of the bearing Q, providing convenient conditions for the bearing Q to be fitted into the piston rod of the hydraulic cylinder without manual intervention; and when the push plate 220 of the inner ring unit 200 contacts the end face of the inner support 230 away from the push plate 220, it can move towards the pressure plate 210, so that the spacer of the bearing Q can be automatically moved onto the piston rod without the need for manual assistance of an additional nylon sleeve, improving work efficiency and convenience. The bearing clamping mechanism 10 of the press-fitting system can automatically install the bearing Q onto the piston rod of the hydraulic cylinder of the press-fitting machine. The entire installation process does not require manual intervention, truly achieving unmanned and automated operation, improving efficiency, and requiring no additional tools, thus enhancing work efficiency and convenience.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A bearing gripping mechanism characterized by, The application relates to a bearing clamp, which comprises: an outer ring unit, which comprises a base and a plurality of outer clamping claws arranged on the base, the plurality of outer clamping claws being capable of being retracted towards or expanded away from the central axis of the base to abut or be away from the outer circumferential surface of a target bearing; and an inner ring unit located in the area surrounded by the plurality of outer clamping claws and comprising a pressing plate, a pushing plate and a plurality of inner supporting rods, the pressing plate being arranged on the base and being capable of moving along the central axis of the base to clamp or release the target bearing in cooperation with the outer clamping claws, the pushing plate being arranged on the side of the pressing plate away from the base and being capable of moving along the central axis of the base, and the plurality of inner supporting rods being arranged on the side of the pushing plate away from the pressing plate and being capable of being retracted towards or expanded away from the central axis of the base to be away from or abut the inner circumferential surface of the target bearing. The outer ring unit further comprises a rotating disc for rotatably mounting the base and a guide frame arranged on the rotating disc, the guide frame and the outer clamping claws are located on the same side of the base, and the outer clamping claws are movably arranged on the guide frame.

2. The bearing gripping mechanism of claim 1, wherein When the base rotates, the base can push the plurality of outer clamping claws to move synchronously along the guide frame towards or away from the central axis of the base. The outer clamping claws are sleeved on the guide frame through a sliding sleeve, and the side of the sliding sleeve close to the base is provided with a follower block.

3. The bearing gripping mechanism of claim 2, wherein, The base is provided with a plurality of sliding grooves along the circumferential direction of the base, and the sliding grooves are used for accommodating corresponding follower blocks, wherein the distance L between the sliding grooves and the central axis of the base gradually decreases or increases in the rotating direction of the base. The guide frame has a first mounting surface away from the base, the sliding sleeve has a second mounting surface opposite to the first mounting surface, one of the first mounting surface and the second mounting surface is provided with an outer sliding rail, and the other is provided with an outer sliding block, the outer sliding rail extends along the radial direction of the base, and the side of the outer sliding block facing the outer sliding rail is provided with an outer accommodation groove for accommodating the outer sliding rail.

4. The bearing gripping mechanism of claim 3, wherein The outer ring unit further comprises a base driving member arranged on the rotating disc and located on the side of the base away from the guide frame, and the base driving member is used for driving the base to rotate.

5. The bearing gripping mechanism of claim 2, wherein And / or, The outer ring unit further comprises a pressing plate driving member arranged on the side of the guide frame away from the base and used for driving the pressing plate to move along the central axis of the base. The inner ring unit further comprises a linkage member arranged on the side of the pushing plate away from the pressing plate and connected with all the inner supporting rods.

6. The bearing gripping mechanism of claim 1, wherein The linkage member is used for driving the remaining inner supporting rods to move synchronously towards or away from the central axis of the base when one of the inner supporting rods moves towards or away from the central axis of the base. The linkage member comprises a rotating disc rotatably arranged on the pushing plate and a plurality of connecting rods, and the two ends of the connecting rods are respectively hinged with the rotating disc and the corresponding inner supporting rods.

7. The bearing gripping mechanism of claim 6, wherein, ​ 8. The bearing gripping mechanism of claim 7, wherein, One of the side of the inner support close to the push plate and the side of the push plate away from the pressing plate is provided with an inner slide rail, and the other side is provided with an inner slide block, the inner slide rail extends along the radial direction of the push plate, and the side of the inner slide block facing the inner slide rail is provided with an accommodation groove for accommodating the inner slide rail.

9. The bearing gripping mechanism of claim 6, wherein, The inner ring unit further comprises an inner support driving member arranged on the side of the push plate away from the inner support and used for driving the one of the inner supports to move towards or away from the central axis of the base.

10. The bearing gripping mechanism according to any one of claims 1 to 9, characterized in that, The inner ring unit further comprises a push plate driving member arranged on the pressing plate and used for driving the push plate to move along the central axis of the base.

11. A press-fit system characterized by, The bearing clamping mechanism comprises a mechanical arm, a pressing machine and the bearing clamping mechanism, the mechanical arm is connected with the outer ring unit of the bearing clamping mechanism, and the mechanical arm is used for cooperating with the bearing clamping mechanism to install a target bearing on the pressing machine.

Images