Positioning device for machining bearing ring

Abstract

The application discloses a positioning device for bearing ring machining, and relates to the technical field of bearing machining.The positioning device comprises two mutually hinged support parts, a grabbing part located between the two support parts and used for hooking a bearing ring, wherein the support parts are attached to the outer wall of the bearing ring and used for supporting the bearing ring, and the bearing ring is fixed through cooperation of the support parts and the grabbing part; a limiting part is connected between the two support parts, and the spacing between the two support parts is maintained through the limiting part.The positioning device for bearing ring machining effectively solves the technical problem of poor applicability of the existing bearing ring positioning device in use, and realizes the same clamping of different models of bearing rings, because the two support parts are used to support the outer wall of the bearing ring, and the grabbing part is used to hook the inner wall of the bearing ring, forming three-point clamping.

Description

Technical Field

[0001] This invention relates to the field of bearing processing technology, and in particular to a positioning device for processing bearing rings. Background Technology

[0002] Bearing rings are ring-shaped parts of radial rolling bearings with one or more raceways. Bearing rings are an important component of bearings. After the bearing rings are manufactured, their inner walls usually need to be ground. Therefore, positioning devices are usually used to position the bearing rings to facilitate subsequent grinding.

[0003] Currently, patent application CN218364080U discloses a positioning device for machining bearing rings, including a machining table with a mounting plate fixedly connected to it, and a triangular positioning mechanism connected to the mounting plate, capable of fixing the bearing rings through three-way linkage clamping; and a drive assembly connected to the mounting plate, one end of which is connected to the triangular positioning mechanism for transmission. An electric telescopic rod drives a sliding plate and a first clamping plate to move. The sliding plate drives a transmission gear, a sector gear, and a clamping rod to rotate via a rack and pinion. The clamping rod drives a second clamping plate to rotate. Under the combined clamping of the first clamping plate and the two second clamping plates, the bearing rings are fixed, ultimately positioned at the center of the triangle formed by the first clamping plate and the two second clamping plates, resulting in more accurate bearing ring positioning and higher machining precision.

[0004] Patent application CN217860732U discloses a positioning device for machining bearing rings, relating to the field of bearing machining technology. The device includes a base and a lifting rod. A limiting ring is provided at the upper part of the lifting rod, with a mounting groove on the inner side of the limiting ring. An upper mounting block is fixedly mounted on the rear side of the limiting ring, and an upper movable shaft is movably mounted inside the upper mounting block. An actuating rod is movably connected to the upper mounting block via the upper movable shaft, and a lower movable shaft is movably mounted at the lower part of the actuating rod. The length of the actuating rod is fixed. The actuating rod can pull the two limiting rings to unfold rearwards, placing the bearing ring into the mounting groove inside the limiting ring. When the lifting rod moves downwards, the connecting column can be pulled to return the limiting rings to their original position. Because the two limiting rings are semi-circular, the bearing ring can be fixed when the limiting rings return to their original position, allowing machining of both sides of the bearing ring separately, thus solving the problem of current methods that are inconvenient for machining from both sides.

[0005] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0006] The existing bearing ring positioning devices are cumbersome and have limited applicability: They primarily rely on clamping for fixation. This clamping process requires not only adjusting the placement (to prevent deviations during clamping) but also checking the stability of the fixed position. This is to prevent displacement or wobbling of the bearing ring during grinding, which would affect grinding accuracy. Furthermore, existing bearing ring positioning devices use curved clamps to improve stability. However, the constant curvature of these clamps leads to gaps when clamping bearing rings with mismatched curvatures, resulting in loose clamping. Therefore, to ensure stable bearing ring clamping, only bearing rings compatible with the curved clamp can be clamped, severely impacting clamping stability. To address this, we propose a positioning device for bearing ring processing. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a positioning device for bearing ring processing, solving the technical problems of cumbersome positioning and poor applicability of existing bearing ring positioning devices.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A positioning device for machining bearing races includes a gripping part, which acts like a hook and can be inserted into the bearing race to hook it and provide a downward pulling force. A support part is provided on each side of the gripping part, which supports the outer wall of the bearing race and provides an upward supporting force. Therefore, the supporting force of the two support parts on the bearing race and the downward pulling force of the gripping part on the bearing race form a three-point clamping, thus stably clamping the bearing race. Furthermore, since there are three contact points with the bearing race, different types of bearing races can be uniformly fixed, improving the applicability of the device.

[0012] Two hinged supports provide two upward forces;

[0013] The gripping part, located between the two support parts, is used to hook the bearing race and provide a downward pulling force, cooperating with the two support parts to form three clamping points;

[0014] The support part fits against the outer wall of the bearing ring to support the bearing ring, and fixes the bearing ring by cooperating with the gripping part, thereby forming a force balance. Thus, the three-point clamping can uniformly clamp bearing rings of different sizes, improving the applicability of the device.

[0015] A limiting part is connected between the two support parts, and the distance between the two support parts is maintained by the limiting part to prevent the two support parts from moving during grinding. For this purpose, it is necessary to limit the position of the two support parts. Since the gripping part cannot move, a stable clamping device is formed when the position of the two support parts is constant.

[0016] Preferably, the support includes a mounting plate, and a pressing wheel is hinged to the free end of the mounting plate. The mounting plate is in contact with the outer wall of the bearing ring through the pressing wheel, thereby providing support force for the bearing ring.

[0017] The extrusion wheel is driven to rotate by a motor mounted on the mounting plate. Since the extrusion wheel is in contact with the outer wall of the bearing ring, the bearing ring can be rotated when the motor drives the extrusion wheel to rotate, thereby adjusting the position of the bearing ring. Therefore, the bearing ring can be rotated while the grinding device is stationary, maintaining a constant position between the two.

[0018] Preferably, there are two extrusion rollers, and the two extrusion rollers are connected by a rotating shaft;

[0019] The motor has a connecting rod connected to its output shaft, and both the connecting rod and the rotating shaft are equipped with synchronous pulleys. The two synchronous pulleys are connected by a synchronous belt. Therefore, when the motor is powered on, it can drive the connecting rod connected to its output shaft to rotate. Since both the connecting rod and the rotating shaft are equipped with synchronous pulleys, and the synchronous pulleys are fitted with synchronous belts, the extrusion roller can rotate synchronously when the motor drives the connecting rod to rotate.

[0020] Preferably, the gripping part includes a connecting plate, and both sides of the connecting plate are connected to side plates, and each of the two side plates is provided with a hook rod on the opposite side.

[0021] The two hook rods are both curved at opposite ends, which makes it easier to unfold the side plate by applying force when the bearing ring is pressed towards the hook rod, thus reducing the difficulty of installing the bearing ring.

[0022] Preferably, connecting rods are inserted into both the front and rear ends of the connecting plate, and the connecting plate is connected to the side plate through the connecting rods, so that the side plate can slide outward under the action of the connecting rods, thereby adjusting the distance between the two side plates and reducing the difficulty of connecting the bearing ring and the gripping part.

[0023] The two connecting rods are connected by a spring, and the spring is always in a stretched state. Therefore, the force on the two side plates is directed towards the connecting plate, which makes it easier to clamp the bearing ring.

[0024] The connecting rod is a non-cylindrical structure to prevent relative rotation between the connecting plate and the side plate, thus ensuring that the connecting rod and the connecting plate can only extend and retract without rotating.

[0025] Preferably, a base is provided at the hinge of the two support parts, and the connecting plate is connected to the base. By installing the base onto the workbench, the position of the connecting plate can be kept constant.

[0026] Preferably, the limiting part includes a threaded cylinder and a movable block hinged to the support part, and the movable block is screwed to the threaded cylinder by a screw connected to its external side. Therefore, by rotating the threaded cylinder, the screw can be moved along the extension direction of the threaded cylinder, thereby adjusting the distance between the two support parts.

[0027] The connecting plate has a through hole on its outer wall, and the threaded cylinder passes through the through hole to prevent collision between the threaded cylinder and the connecting plate.

[0028] Preferably, the outer wall of the threaded cylinder is connected to a baffle plate, and the baffle plate is connected to a limiting block sleeved on the outer wall of the threaded cylinder by a spring, so that the two can move relative to each other;

[0029] The outer wall of the threaded cylinder is provided with a sliding groove, and the limiting block is slidably connected to the sliding groove through a slider provided inside it, so that the limiting block can slide along the length direction of the threaded cylinder, thereby adjusting the position of the limiting block.

[0030] The limiting block is rectangular and can be inserted into the through hole. When the limiting block is released, it can move towards the position of the through hole under the action of the spring between it and the baffle. Since the limiting block is rectangular, it cannot rotate when it is inserted into the through hole, and the threaded cylinder connected to the limiting block cannot rotate (it can only slide and cannot rotate relative to it), thereby locking the positional relationship between the threaded cylinder and the lead screw, and locking the position of the two support parts.

[0031] Preferably, each of the two mounting plates has an embedding groove on its opposite side, and the movable block is embedded in the embedding groove and connected to the inside of the embedding groove through a rotating shaft, so that the lead screw and the mounting plate can rotate relative to each other, avoiding bending between the mounting plate and the lead screw when the support moves.

[0032] Preferably, the lead screw has two sets of reserved grooves on its outer side, and the extension direction of the two sets of reserved grooves is consistent with the length direction of the lead screw, so as to facilitate the sliding of the threaded plate in the reserved grooves;

[0033] The inner wall of the threaded cylinder is equipped with two threaded plates, and the width of the threaded plates is smaller than the width of the reserved groove. This ensures that the threaded plates will not come into contact with the threads on the outside of the lead screw when they slide along the reserved groove, thereby improving the stability of the sliding of the threaded plates.

[0034] The two lead screws are connected by a spring, which is always in a stretched state, thereby pulling the lead screws towards the direction of the threaded cylinder. This causes the two support parts to automatically converge towards the center and fit against the outer wall of the bearing ring. Once the support parts are in contact with the outer wall of the bearing ring, the threaded cylinder is rotated so that the threaded plate on the inner wall of the threaded cylinder engages with the thread on the outer wall of the lead screw, thus locking the lead screw. After that, the limiting block is aligned with the through hole.

[0035] (III) Beneficial Effects

[0036] 1. By using two support parts to support the outer wall of the bearing ring and then using the gripping part to hook the inner wall of the bearing ring to form a three-point clamping, the technical problems of cumbersome positioning and poor applicability of existing bearing ring positioning devices are effectively solved. This enables the rapid clamping of bearing rings and allows for the same clamping of bearing rings of different models, thereby improving the applicability of the device.

[0037] 2. Because a motor drives the extrusion wheel to rotate, and the extrusion wheel fits against the outer wall of the bearing ring, the technical problem of needing to constantly adjust the grinding device during use of existing bearing ring positioning devices is effectively solved. This allows the bearing ring to rotate while keeping the grinding device stationary, thereby improving the stability and accuracy of grinding.

[0038] 3. Because of the use of a hook rod with an arc-shaped end, and the connection between the side plate and the connecting plate through a connecting rod, the bearing ring only needs to be pressed towards the hook rod. Therefore, the technical problem of cumbersome clamping during the use of existing bearing ring positioning devices is effectively solved, thereby realizing the rapid clamping of bearing rings, reducing the difficulty of clamping bearing rings, and thus saving the installation time of bearing rings.

[0039] 4. Because a sliding limit block is used in conjunction with the threaded cylinder, and the movement of the limit block is restricted by the through hole on the outside of the connecting plate, the degree of expansion of the support part is restricted, which makes it easier to maintain the clamping state, avoids the bearing ring from moving during clamping, and improves the stability of the bearing ring clamping.

[0040] 5. Because the screw with a pre-reserved groove is matched with the threaded plate inside the threaded cylinder, the threaded cylinder and the screw can be quickly retracted and extended, thereby reducing the difficulty of adjusting the threaded cylinder, and at the same time, the position between the two support parts can be freely adjusted as needed. Attached Figure Description

[0041] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] Figure 1 This is one of the overall structural diagrams of an embodiment of the present invention;

[0043] Figure 2 This is the second overall structural diagram of an embodiment of the present invention;

[0044] Figure 3 This is one of the structural diagrams of the gripping part in an embodiment of the present invention;

[0045] Figure 4 This is a second structural diagram of the gripping part in an embodiment of the present invention;

[0046] Figure 5 This is one of the connection structure diagrams of the limiting part and the supporting part in an embodiment of the present invention;

[0047] Figure 6 This is a second connection structure diagram of the limiting part and the supporting part in an embodiment of the present invention;

[0048] Figure 7 This is a structural diagram of the limiting part in an embodiment of the present invention;

[0049] Figure 8 This is a structural diagram of the threaded cylinder and threaded plate in an embodiment of the present invention;

[0050] Figure 9 This is a structural diagram of the support portion in an embodiment of the present invention;

[0051] Figure 10 This is a schematic diagram illustrating the usage state of an embodiment of the present invention.

[0052] Legend: 1. Base; 2. Support; 21. Mounting plate; 22. Extrusion wheel; 23. Motor; 24. Synchronous belt; 25. Linkage rod; 3. Limiting part; 31. Movable block; 32. Lead screw; 33. Threaded cylinder; 34. Baffle; 35. Limiting block; 36. Threaded plate; 37. Reserved slot; 4. Gripping part; 41. Connecting plate; 42. Side plate; 43. Hook rod; 44. Connecting rod. Detailed Implementation

[0053] This application provides a positioning device for processing bearing rings, effectively solving the technical problems of existing bearing ring positioning devices being cumbersome and having limited applicability. By employing two support parts to support the outer wall of the bearing ring, and then using a gripping part to hook the inner wall of the bearing ring, a three-point clamping method is formed, thereby achieving rapid clamping of the bearing ring. Simultaneously, it can clamp different types of bearing rings simultaneously, improving the device's applicability. Because a motor drives the extrusion wheel to rotate, and the extrusion wheel is in contact with the outer wall of the bearing ring, the bearing ring rotates, keeping the grinding device stationary, thus improving the stability and accuracy of grinding. Furthermore, by using a hook rod with an arc-shaped end, and through... The connecting rod connects the side plate and the connecting plate together. Simply press the bearing ring towards the hook rod to quickly clamp the bearing ring, reducing the difficulty of clamping the bearing ring and saving installation time. Because a sliding limit block is used in conjunction with the threaded cylinder, and the movement of the limit block is restricted by the through hole on the outside of the connecting plate, the extent of the support's expansion is limited, facilitating the maintenance of the clamped state and preventing the bearing ring from moving during clamping, thus improving the stability of the bearing ring clamping. The use of a screw with a pre-grooved groove that matches the threaded plate inside the threaded cylinder enables rapid retraction and extension between the threaded cylinder and the screw, reducing the difficulty of adjusting the threaded cylinder and allowing for flexible positioning between the two support parts as needed.

[0054] Example 1

[0055] The technical solution in this application embodiment effectively solves the technical problems of existing bearing ring positioning devices being cumbersome to position and having a limited range of applications. The overall idea is as follows:

[0056] To address the problems existing in the prior art, the present invention provides a positioning device for machining bearing rings. This positioning device includes a gripping part 4, which acts like a hook and can be inserted into the bearing ring to hook it, providing a downward pulling force. A support part 2 is provided on each side of the gripping part 4, which supports the outer wall of the bearing ring, providing an upward supporting force. Therefore, the supporting force of the two support parts 2 on the bearing ring and the downward pulling force of the gripping part 4 on the bearing ring form a three-point clamping mechanism. Figure 10 As shown, this method stably clamps the bearing race. Furthermore, because there are three contact points with the bearing race, it allows for the uniform fixing of bearing races of different models, improving the applicability of the device.

[0057] Two mutually hinged support parts 2, such as Figure 5 and Figure 6 As shown, two upward forces are provided;

[0058] The gripping part 4, located between the two support parts 2, is used to hook the bearing race, such as... Figure 10 As shown, a downward pulling force is provided, which cooperates with the two support parts 2 to form three clamping points;

[0059] The support part 2 fits against the outer wall of the bearing ring to support it, and, in conjunction with the gripping part 4, fixes the bearing ring in place. Figure 1 and Figure 10 As shown, this creates a force balance, and the three-point clamping method enables uniform clamping of bearing rings of different sizes, improving the applicability of the device.

[0060] A limiting part 3 is connected between the two support parts 2, and the distance between the two support parts 2 is maintained by the limiting part 3 to prevent the two support parts 2 from moving during grinding (at this time, a gap appears between the support parts 2 and the gripping part 4, which allows the bearing ring to move). Therefore, it is necessary to limit the position of the two support parts 2. Since the gripping part 4 cannot move, a stable clamping device is formed when the position of the two support parts 2 is constant.

[0061] In the specific implementation process, the gripping part 4 is inserted into the inside of the bearing race, and the supporting part 2 is located on the outside of the bearing race, such as... Figure 10 As shown, press down on the support part 2, causing the two support parts 2 to move closer to the bearing ring, thus forming a compression state. After completion, use the limiting part 3 to lock the position of the two support parts 2, preventing them from unfolding. At this point, all three points are fixed. The gripping part 4, like a hook, can be inserted into the bearing ring and hook it, providing a downward pulling force to the bearing ring. Meanwhile, the support parts 2 support the outer wall of the bearing ring, providing an upward supporting force. The supporting forces of the two support parts 2 on the bearing ring and the downward pull of the gripping part 4 on the bearing ring form a three-point clamping structure. Figure 10 As shown, this method stably clamps the bearing race. Furthermore, since there are three contact points with the bearing race, it can uniformly fix bearing races of different models, improving the applicability of the device.

[0062] Example 2

[0063] Based on Example 1, this application's embodiment effectively solves the technical problem that existing bearing ring positioning devices require continuous adjustment of the grinding device during use. The overall approach is as follows:

[0064] The support portion 2 includes a mounting plate 21, and a pressing wheel 22 is hinged to the free end of the mounting plate 21. The mounting plate 21 is in contact with the outer wall of the bearing ring through the pressing wheel 22. Figure 10 As shown, this provides support force for the bearing races;

[0065] The extrusion roller 22 is driven to rotate by the motor 23 mounted on the mounting plate 21. Since the extrusion roller 22 is in contact with the outer wall of the bearing ring, the bearing ring can be rotated when the motor 23 drives the extrusion roller 22 to rotate, thereby adjusting the position of the bearing ring. Therefore, the bearing ring can be rotated while the grinding device is stationary, maintaining a constant position between the two.

[0066] In some examples, two extrusion rollers 22 are provided, and the two extrusion rollers 22 are connected by a shaft, such as... Figure 9 As shown;

[0067] The motor 23 has a connecting rod 25 connected to its output shaft. Both the connecting rod 25 and the rotating shaft are equipped with synchronous pulleys. The two synchronous pulleys are connected by a synchronous belt 24. Therefore, when the motor 23 is powered on, it can drive the connecting rod 25 connected to its output shaft to rotate. Since both the connecting rod 25 and the rotating shaft are equipped with synchronous pulleys, and the synchronous belt 24 is sleeved on the outside of the synchronous pulleys, the extrusion roller 22 can rotate synchronously when the motor 23 drives the connecting rod 25 to rotate.

[0068] In the specific implementation process, the motor 23 is energized, causing the motor 23 to rotate, which in turn drives the connecting rod 25 connected to its output shaft to rotate. Since the connecting rod 25 and the rotating shaft (which is connected to the extrusion wheel 22) are both equipped with synchronous pulleys, and the synchronous pulleys are fitted with synchronous belts 24, the extrusion wheel 22 can rotate synchronously when the motor 23 drives the connecting rod 25 to rotate. Furthermore, since the extrusion wheel 22 is in contact with the outer wall of the bearing ring, the bearing ring can rotate when the motor 23 drives the extrusion wheel 22 to rotate, thereby adjusting the position of the bearing ring. Therefore, the bearing ring can rotate while the grinding device remains stationary, maintaining a constant position between the two.

[0069] Example 3

[0070] Based on Example 1, the embodiments of this application effectively solve the technical problem of cumbersome clamping during use of existing bearing ring positioning devices. The overall idea is as follows:

[0071] The gripping part 4 includes a connecting plate 41, and side plates 42 are connected to both sides of the connecting plate 41. Hooks 43 are provided on opposite sides of each side plate 42. Figure 3 and Figure 4 As shown;

[0072] The two hook rods 43 have arc-shaped ends, which facilitates the unfolding of the side plate 42 by applying force when the bearing ring is pressed towards the hook rod 43. Figure 4 As shown, this reduces the difficulty of installing the bearing rings.

[0073] In some examples, connecting rods 44 are inserted into both the front and rear ends of the connecting plate 41, and the connecting plate 41 is connected to the side plate 42 through the connecting rods 44, so that the side plate 42 can slide outward under the action of the connecting rods 44, thereby adjusting the distance between the two side plates 42, and reducing the difficulty of connecting the bearing ring and the gripping part 4.

[0074] The two connecting rods 44 are connected by a spring, which is always under tension. Therefore, the force on both side plates 42 is directed towards the connecting plate 41, facilitating the clamping of the bearing rings. Figure 10 As shown;

[0075] The connecting rod 44 is a non-cylindrical structure to prevent relative rotation between the connecting plate 41 and the side plate 42, so that the connecting rod 44 and the connecting plate 41 can only extend and retract and cannot rotate.

[0076] In some examples, a base 1 is provided at the hinge of the two support parts 2, and the connecting plate 41 is connected to the base 1. By installing the base 1 onto the workbench, the position of the connecting plate 41 can be kept constant.

[0077] In the specific implementation process, by placing the bearing ring between the two hook rods 43 and pressing it down, the two side plates 42 can unfold when compressed by the bearing ring because the ends of the hook rods 43 are arc-shaped. Figure 4 As shown, the bearing ring can then enter between the two side plates 42. After the bearing ring enters, the side plates 42 contract under the action of the springs between the connecting rods 44, thereby clamping the bearing ring. At the same time, the hook rod 43 hooks onto the inner wall of the bearing ring, thus completing the connection between the bearing ring and the gripping part 4.

[0078] Example 4

[0079] Based on Example 1, this application provides a feasible limiting part solution to address the problem of easy movement between the two support parts. The overall concept is as follows:

[0080] The limiting part 3 includes a threaded cylinder 33 and a movable block 31 hinged to the support part 2. The movable block 31 is screwed to the threaded cylinder 33 via a screw rod 32 connected to its external side. Therefore, by rotating the threaded cylinder 33, the screw rod 32 can be moved along the extension direction of the threaded cylinder 33, thereby adjusting the distance between the two support parts 2.

[0081] The connecting plate 41 has a through hole on its outer wall, and the threaded cylinder 33 passes through the through hole, such as... Figure 1 and Figure 2 As shown, this is to prevent collisions between the threaded cylinder 33 and the connecting plate 41.

[0082] In some examples, a baffle 34 is connected to the outer wall of the threaded cylinder 33, and the baffle 34 is connected to a limiting block 35 sleeved on the outer wall of the threaded cylinder 33 by a spring, so that the two can move relative to each other.

[0083] The outer wall of the threaded cylinder 33 is provided with a sliding groove, and the limiting block 35 is slidably connected to the sliding groove through a slider provided inside it, so that the limiting block 35 can slide along the length direction of the threaded cylinder 33, thereby adjusting the position of the limiting block 35.

[0084] The limiting block 35 is rectangular and can be inserted into the through hole. When the limiting block 35 is released, it can move towards the position of the through hole under the action of the spring between it and the baffle 34. Since the limiting block 35 is rectangular, it cannot rotate when it is inserted into the through hole. The threaded cylinder 33 connected to the limiting block 35 also cannot rotate (it can only slide and cannot rotate relative to it), thereby locking the positional relationship between the threaded cylinder 33 and the lead screw 32, and locking the positions of the two support parts 2.

[0085] In some examples, the two mounting plates 21 are provided with embedded grooves on opposite sides, and the movable block 31 is embedded in the embedded groove and connected to the inside of the embedded groove through a rotating shaft, so that the lead screw 32 and the mounting plate 21 can rotate relative to each other, thus preventing the mounting plate 21 and the lead screw 32 from bending when the support part 2 moves.

[0086] In the specific implementation process, the limiting block 35 is pulled away from the baffle 34, causing the baffle 34 to disengage from the through hole. At this time, the limiting block 35 can drive the threaded cylinder 33 to rotate. Since the threaded cylinder 33 and the lead screw 32 are connected by a thread, when the threaded cylinder 33 rotates, the lead screw 32 can rotate relative to the threaded cylinder 33. Even if the lead screw 32 extends out or inserts into the threaded cylinder 33, the position of the lead screw 32 is adjusted, thereby changing the position of the two support parts 2. After the position is adjusted, the rotation of the limiting block 35 is stopped, so that the threaded cylinder 33 no longer rotates. At this time, the limiting block 35 is released, and under the action of the spring (the spring between the limiting block 35 and the baffle 34), it moves towards the limiting block 35 until the limiting block 35 is inserted into the through hole of the connecting plate 41. Figure 6 As shown, the limiting block 35 cannot rotate, and the threaded cylinder 33 connected to the limiting block 35 also cannot rotate (it can only slide, not rotate relative to each other), thereby locking the positional relationship between the threaded cylinder 33 and the lead screw 32, and locking the positions of the two support parts 2.

[0087] Example 5

[0088] Based on Example 4, this application provides a feasible support solution (this example is an optional solution), and the overall concept is as follows:

[0089] The lead screw 32 has two sets of reserved slots 37 on its outer surface, and the extending direction of the two sets of reserved slots 37 is consistent with the length direction of the lead screw 32, such as... Figure 7 As shown, this facilitates the sliding of the threaded plate 36 in the reserved groove 37;

[0090] The inner wall of the threaded cylinder 33 is equipped with two threaded pieces 36, and the width of the threaded pieces 36 is smaller than the width of the reserved groove 37. This ensures that the threaded pieces 36 will not come into contact with the threads on the outside of the lead screw 32 when they slide along the reserved groove 37, thereby improving the stability of the sliding of the threaded pieces 36.

[0091] The two lead screws 32 are connected by a spring, which is always in a stretched state. This pulls the lead screws 32 toward the threaded cylinder 33, causing the two support parts 2 to automatically converge toward the center and fit against the outer wall of the bearing ring. Once the support parts 2 are in contact with the outer wall of the bearing ring, the threaded cylinder 33 is rotated so that the threaded plate 36 on the inner wall of the threaded cylinder 33 engages with the thread on the outer wall of the lead screw 32, thus locking the lead screw 32. After that, the limiting block 35 is aligned with the through hole.

[0092] In the specific implementation process, when it is necessary to adjust the position between the support parts 2, rotate the threaded cylinder 33 so that the threaded plate 36 on the inner wall of the threaded cylinder 33 corresponds to the reserved groove 37. At this time, the threaded plate 36 can slide along the reserved groove 37 and will not contact the thread on the outside of the screw 32. When the support part 2 is in contact with the outer wall of the bearing ring, rotate the threaded cylinder 33 again so that the threaded plate 36 on the inner wall of the threaded cylinder 33 engages with the thread on the outer wall of the screw 32, thus completing the locking of the screw 32. Then, make the limiting block 35 correspond to the through hole.

[0093] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A positioning device for machining bearing rings, characterized in that, The positioning device includes: Two hinged support parts (2); The gripping part (4) is located between the two support parts (2) and is used to hook the bearing ring; The support part (2) is attached to the outer wall of the bearing ring to support the bearing ring, and is fixed by cooperating with the gripping part (4); A limiting part (3) is connected between the two support parts (2), and the distance between the two support parts (2) is maintained by the limiting part (3); The support part (2) includes a mounting plate (21), and a pressing wheel (22) is hinged to the free end of the mounting plate (21). The mounting plate (21) is in contact with the outer wall of the bearing ring through the pressing wheel (22). The extrusion wheel (22) is driven to rotate by a motor (23) mounted on the mounting plate (21); There are two extrusion rollers (22), and the two extrusion rollers (22) are connected by a rotating shaft; The motor (23) has a connecting rod (25) connected to its output shaft, and both the connecting rod (25) and the shaft are equipped with synchronous pulleys. The two synchronous pulleys are connected by a synchronous belt (24).

2. The positioning device for machining bearing rings as described in claim 1, characterized in that: The gripping part (4) includes a connecting plate (41), and both sides of the connecting plate (41) are connected to side plates (42), and hook rods (43) are provided on the opposite side of the two side plates (42). The two hook rods (43) are both arc-shaped at opposite ends.

3. The positioning device for machining bearing rings as described in claim 2, characterized in that: The connecting plate (41) has connecting rods (44) inserted at both the front and rear ends, and the connecting plate (41) is connected to the side plate (42) through the connecting rods (44); The two connecting rods (44) are connected by a spring, and the spring is always in a stretched state. The connecting rod (44) is a non-cylindrical structure.

4. The positioning device for machining bearing rings as described in claim 2, characterized in that: The hinge of the two support parts (2) is provided with a base (1), and the connecting plate (41) is connected to the base (1).

5. A positioning device for machining bearing rings as described in claim 2, characterized in that: The limiting part (3) includes a threaded cylinder (33) and a movable block (31) hinged to the support part (2), and the movable block (31) is screwed to the threaded cylinder (33) through a lead screw (32) connected to its exterior. The outer wall of the connecting plate (41) is provided with a through hole, and the threaded cylinder (33) passes through the through hole.

6. The positioning device for machining bearing rings as described in claim 5, characterized in that: The outer wall of the threaded cylinder (33) is connected to a baffle (34), and the baffle (34) is connected to a limiting block (35) sleeved on the outer wall of the threaded cylinder (33) by a spring; The outer wall of the threaded cylinder (33) is provided with a sliding groove, and the limiting block (35) is slidably connected to the sliding groove through a slider provided inside it; The limiting block (35) is rectangular and can be inserted into the through hole.

7. A positioning device for machining bearing rings as described in claim 6, characterized in that: The lead screw (32) has two sets of reserved slots (37) on its outside, and the extension direction of the two sets of reserved slots (37) is consistent with the length direction of the lead screw (32). The inner wall of the threaded cylinder (33) is equipped with two threaded plates (36), and the width of the threaded plates (36) is smaller than the width of the reserved groove (37). The two lead screws (32) are connected by a spring, and the spring is always in a stretched state.

8. A positioning device for machining bearing rings as described in claim 5, characterized in that: Both mounting plates (21) have an embedding groove on their opposite sides, and the movable block (31) is embedded in the embedding groove and connected to the inside of the embedding groove through a rotating shaft.

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