External fixing device for annular ring

Abstract

The utility model belongs to the technical field of bearing machining, and discloses an annular ring external fixing device which comprises a lifting assembly and a fixing assembly, the lifting assembly comprises a base and a telescopic sleeve, the base is arranged on a frame body and can ascend and descend in the vertical direction, the other end of the base is connected with a positioning assembly, and the positioning assembly is used for fixing a bearing inner ring; the telescopic sleeve is arranged on the base in a sleeving manner; the fixing assembly comprises a first rotating piece, a first upper rotating disc, a first lower rotating disc and a plurality of first sliding blocks, the first rotating piece is connected with the telescopic sleeve and provided with a first sliding groove, and the first sliding groove is in sliding connection with the first sliding blocks; the first lower rotating disc is provided with a second sliding groove which is in sliding connection with the first sliding block. The first sliding block is provided with a first clamping column. By rotating the first upper rotating disc and the first lower rotating disc, the first sliding block slides in the first sliding groove and the second sliding groove, the clamping radius of the first clamping column is increased or decreased, and the problem that the precision of the positioning column is reduced due to repeated replacement of the positioning column is solved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing processing technology, specifically relating to an external fixing device for annular rings. Background Technology

[0002] Bearings are essential components in modern machinery. Their main function is to support rotating parts of the machine, reduce the coefficient of friction during movement, and ensure rotational accuracy. Rolling bearings generally consist of four parts: an outer ring, an inner ring, rolling elements, and a cage. Strictly speaking, they are composed of six main components: an outer ring, an inner ring, rolling elements, a cage, seals, and lubricating oil. Simply put, any bearing containing an outer ring, an inner ring, and rolling elements can be defined as a rolling bearing. To ensure the stability of the rolling element's trajectory, the inner and outer rings of the bearing typically require groove machining.

[0003] In current existing technologies, such as Chinese invention patent publication number CN105736587A, a large bearing ring positioning groove device is disclosed. Specifically, it discloses a fixing device and a groove device. The fixing device includes a fixing base plate, a fixing cover plate, an inner ring positioning post, an outer ring positioning ring, and a groove guide groove. The groove device includes a first motor, a first rotating shaft, an electric telescopic cylinder, a second motor, a second rotating shaft, a groove cutting edge, a positioning detection rod, and a distance sensor. This invention enables the grooves of the inner and outer rings of the bearing to be grooved simultaneously, and also allows for detection and positioning during the grooving process. The position and depth of the grooves can be adjusted at any time to prevent mismatch between the inner and outer ring grooves, effectively ensuring the quality of the bearing products.

[0004] In the use of the above-mentioned existing technology, if there are multiple bearings of different sizes that need to be manufactured, the positioning pins need to be replaced according to different sizes. Repeated or frequent replacements can easily lead to a decrease in the accuracy of the positioning pins and a reduction in their service life. Moreover, the replacement is cumbersome and labor-intensive. Summary of the Invention

[0005] Based on this, this application provides an external fixing device for annular rings to solve the problem that in the production and manufacturing of bearings of various sizes in the prior art, the frequent replacement of positioning pins can easily lead to a decrease in the accuracy of the positioning pins, a reduction in their service life, and a relatively cumbersome and labor-intensive replacement process.

[0006] The technical solution to the above-mentioned technical problems in this application is as follows:

[0007] An external fixing device for an annular ring, comprising:

[0008] The system includes a lifting assembly and a fixing assembly. The lifting assembly comprises a base and a telescopic sleeve. One end of the base is mounted on a frame and can move up and down vertically. The other end of the base is connected to a positioning assembly for fixing the inner ring of the bearing. The telescopic sleeve is fitted onto the base and rotatably connected to the frame, and can also move up and down vertically. The fixing assembly comprises a first rotating component, a first upper turntable, a first lower turntable, and a plurality of first sliders. One end of the first rotating component is connected to the lower end face of the telescopic sleeve, and the other end is connected to the upper end face of the first upper turntable. The first upper turntable is provided with a plurality of first sliding grooves, which are slidably connected to and limit-fitted with the upper end face of the first sliders. The first lower turntable is provided with a plurality of second sliding grooves, which are slidably connected to and limit-fitted with the first sliders. The horizontal projections of the first and second sliding grooves coincide. A first locking post is provided at one end of the lower end face of the first slider for positioning and clamping the outer ring of the bearing.

[0009] Preferably, the first rotating component includes a drive motor, a gear disk, and a first limiting component. The drive motor is mounted on the frame, the gear disk is fixed to one end of the telescopic sleeve and is connected to the drive motor in a transmission manner, and the first limiting component is sleeved on the telescopic sleeve and connected to the frame to limit the rotation of the telescopic sleeve.

[0010] Preferably, the first limiting member includes a steering cylinder, which is disposed on the frame and can slide up and down along the telescopic sleeve. The steering cylinder is provided with a plurality of locking grooves, and the outer wall of the telescopic sleeve is provided with a plurality of locking blocks. The locking grooves and the locking blocks are engaged in a limiting cooperation.

[0011] Preferably, the telescopic sleeve includes a fixed sleeve and a lifting sleeve. The fixed sleeve is rotatably connected to the frame, and the outer wall of the lifting sleeve is provided with a plurality of protrusions. The steering sleeve is sleeved on the fixed sleeve, and the inner wall of the steering sleeve is provided with a plurality of grooves, and the protrusions slide in cooperation with the grooves.

[0012] Preferably, the positioning assembly includes a second rotating member, a second upper turntable, a second lower turntable, and a plurality of second sliders. One end of the second rotating member is connected to the lower end face of the base, and the other end of the second rotating member is connected to the upper end face of the second upper turntable. The second upper turntable is provided with a plurality of third sliding grooves, which are slidably connected to and limit-fitted with the upper end face of the second sliders. The second lower turntable is provided with a plurality of fourth sliding grooves, which are slidably connected to and limit-fitted with the second sliders. The horizontal projections of the third sliding grooves and the fourth sliding grooves coincide. The second upper turntable and the second lower turntable are detachably connected using a connecting plate. A second locking post is provided at one end of the lower end face of the second slider, which is used for positioning and locking the inner ring of the bearing.

[0013] Preferably, the first rotating member and the second rotating member rotate in opposite directions.

[0014] Preferably, the first upper turntable, the first lower turntable, the second upper turntable, and the second lower turntable are all annular discs, and the inner diameters of the first upper turntable and the first lower turntable are not less than the outer diameters of the second upper turntable and the second lower turntable.

[0015] Preferably, the second rotating component includes an annular groove and an annular rod. The annular groove is sleeved on the base, and the base can move up and down within the annular groove. The annular groove is connected to the frame. The annular rod is sleeved on the base, and the annular rod drives the base to rotate via a motor. The annular rod is in a limiting engagement with the annular groove.

[0016] Preferably, the annular groove is provided with a plurality of U-shaped grooves, and the two ends of the annular rod are symmetrically provided with limiting rods, which can slide up and down along the U-shaped grooves.

[0017] The technical solution adopted in this application can achieve the following beneficial effects:

[0018] By setting up a first upper turntable, a first lower turntable, and several first sliders, rotating the first upper and first lower turntables causes the several first sliders to slide within the first and second sliding grooves, thereby increasing or decreasing the clamping radius of the first locking pin. This solves the problem that repeated replacement of the positioning pin during the production of bearing outer rings of different sizes can easily lead to a decrease in the accuracy and service life of the positioning pin. At the same time, by adjusting the clamping radius by rotation, manual replacement is no longer required, solving the problem of cumbersome replacement and high labor intensity. By fitting the telescopic sleeve onto the base and aligning the centers of its cross-sections, the problem of bearing outer ring misalignment leading to inaccurate machining is solved. Attached Figure Description

[0019] Figure 1This is an overall schematic diagram of the external fixing device of the annular ring in this application.

[0020] Figure 2 This is a schematic diagram of the positioning components of the external fixing device for the annular ring in this application.

[0021] Figure 3 This is a partial schematic diagram of the fixing components of the annular external fixing device of this application. Figure 1 .

[0022] Figure 4 This is a partial schematic diagram of the external fixing device of the annular ring in this application.

[0023] Figure 5 This is a partial schematic diagram of the fixing components of the annular external fixing device of this application. Figure 2 .

[0024] Figure 6 This is a partial schematic diagram of the positioning components of the external fixing device for the annular ring in this application.

[0025] Figure 7 This is a bottom view of the external fixing device of the annular ring in this application.

[0026] Figure 8 This is a schematic diagram of the annular groove of the external fixing device for the annular ring in this application.

[0027] In the figure: frame 10, base 110, positioning component 120, annular slot 1211, annular rod 1212, second upper turntable 122, second lower turntable 123, second slider 124, second locking post 125, lifting component 200, telescopic sleeve 210, fixed cylinder 211, lifting cylinder 212, fixed component 220, first rotating component 221, drive motor 2211, gear disk 2212, first limiting component 2213, first upper turntable 222, first lower turntable 223, first slider 224, first locking post 225. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0029] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figures 1 to 8 This application provides an external fixing device for an annular ring, comprising: a lifting assembly 200 and a fixing assembly 220. The lifting assembly 200 includes a base 110 and a telescopic sleeve 210. One end of the base 110 is mounted on a frame 10 and can be raised and lowered vertically. The other end of the base 110 is connected to a positioning assembly 120 for fixing the inner ring of the bearing. The telescopic sleeve 210 is sleeved on the base 110 and rotatably connected to the frame 10, and can be raised and lowered vertically. The fixing assembly 220 includes a first rotating member 221, a first upper turntable 222, a first lower turntable 223, and a plurality of first sliders. 224, one end of the first rotating member 221 is connected to the lower end face of the telescopic sleeve 210, and the other end of the first rotating member 221 is connected to the upper end face of the first upper turntable 222; the first upper turntable 222 is provided with a plurality of first sliding grooves, the first sliding grooves are slidably connected to and limited in fit with the upper end face of the first slider 224; the first lower turntable 223 is provided with a plurality of second sliding grooves, the second sliding grooves are slidably connected to and limited in fit with the first slider 224, and the horizontal projection of the first sliding grooves coincides with the horizontal projection of the second sliding grooves; one end of the lower end face of the first slider 224 is provided with a first locking post 225, the first locking post 225 is used to position and clamp the outer ring of the bearing.

[0032] Specifically, the base 110 adopts a cylindrical device such as a cylinder or telescopic rod that can extend and retract vertically. The frame 10 is a support made of steel plate, steel pipe, or other materials. The base 110 is set inside the frame 10, and one end of the base 110 extends out of the top of the frame 10 and is connected by a bearing. It can be driven to rotate by a motor. The positioning components 120 are all set on the lower end face of the base 110 (the upper end face of the base 110 is the end connected to the frame 10; the lower end face of the base 110 is the end of the base 110 near the ground), and the base 110 extends out of the top of the frame 10. The motor is set on the frame 10 and drives the base 110 to rotate by gears, belts, or other means. The positioning components 120 can use existing inner ring positioning devices for rotating shafts.

[0033] One end of the telescopic sleeve 210 is mounted on the frame 10 via a bearing. The inner ring of the bearing is fitted around the outside of the base 110, and the outer ring of the bearing is connected to the inner wall of the telescopic sleeve 210. The telescopic sleeve 210 is rotatably connected to the motor via gears, belts, etc. Similarly, the upper end face of the telescopic sleeve 210 is the end where the base 110 connects to the frame 10; the lower end face of the telescopic sleeve 210 is the end near the ground. The first upper turntable 222 and the first lower turntable 223 are both discs, with a through hole at the center of each disc. The diameter of the through hole is not less than the outer diameter of the base 110. The number of first and second sliding grooves is the same (the first sliding groove...). The first position is the front end of the second slide groove in the direction of rotation, and the second position is the end end. The projections in the horizontal direction coincide. The first upper turntable 222 and the first lower turntable 223 are connected by a plate to form a whole. The first slider 224 is set between the first upper turntable 222 and the first lower turntable 223. The number of first sliders 224 is the same as the number of first slide grooves. A smooth screw is symmetrically set at one end of the first slider 224 and extends into the first slide groove and the second slide groove. One end of the first slider 224 can slide from the first position to the second position as it rotates, thereby driving the first locking post 225 to retract inward and expand outward.

[0034] Further, the pre-machined bearing outer ring is placed on the work platform below the first lower turntable 223. The telescopic sleeve 210 extends downward, causing the first upper turntable 222 and the first lower turntable 223 to move downward, so that several first locking pins 225 cover the outside of the bearing outer ring. The extension of the telescopic sleeve 210 is stopped, and the telescopic sleeve 210 is rotated, causing the first upper turntable 222 and the first lower turntable 223 to rotate. This causes the first slider 224 to tighten the first locking pins 225 inward, reducing the clamping diameter of the first locking pins 225. When all the first locking pins 225 are clamped on the bearing outer ring, the rotation of the telescopic sleeve 210 is stopped, thus completing the fixing of the bearing outer ring. Conversely, the reverse rotation increases the clamping diameter of the first locking pins 225, and the telescopic sleeve 210 is retracted to remove the bearing outer ring.

[0035] The technical solution of the external fixing device for an annular ring adopted in this application can achieve the following beneficial effects: By setting a first upper turntable 222, a first lower turntable 223 and a plurality of first sliders 224, by rotating the first upper turntable 222 and the first lower turntable 223, the plurality of first sliders 224 slide in the first slide groove and the second slide groove, thereby increasing or decreasing the clamping radius of the first locking post 225, solving the problem that multiple replacements of the positioning post during the production of bearing outer rings of different sizes will easily lead to a decrease in the accuracy of the positioning post and a reduction in its service life; at the same time, by adjusting the clamping radius by rotation, manual replacement is no longer required, solving the problem that replacement is cumbersome and labor-intensive; by fitting the telescopic sleeve 210 onto the base 110 and coinciding the centers of its cross-sections, the problem of misalignment of the bearing outer ring position, resulting in inaccurate processing, is solved.

[0036] Based on the above scheme, the first rotating component 221 includes a drive motor 2211, a gear disk 2212, and a first limiting component 2213. The drive motor 2211 is mounted on the frame 10, the gear disk 2212 is fixed to one end of the telescopic sleeve 210 and is connected to the drive motor 2211 in a transmission manner, and the first limiting component 2213 is sleeved on the telescopic sleeve 210 and connected to the frame 10 to limit the rotation of the telescopic sleeve 210.

[0037] The drive motor 2211 is fixedly connected to the top of the frame 10 in the opposite direction. The drive motor 2211 and the gear disk 2212 are driven and meshed through the transmission gear. The first limiting member 2213 is fixed to the frame 10 using materials such as baffles and columns, and can rotate around the telescopic sleeve 210 on the frame 10. When rotation is required, the first limiting member 2213 is first adjusted to the limiting position, and then the drive motor 2211 is turned on. The telescopic sleeve 210 rotates to the first limiting member 2213 and is blocked. At this time, the drive motor 2211 is turned off, and then the telescopic sleeve 210 rises and falls vertically. The first limiting member 2213 solves the problem of excessive rotation of the telescopic sleeve 210, which causes the first locking post 225 to squeeze the outer ring of the bearing and cause damage to the outer ring of the bearing.

[0038] In a preferred embodiment of this application, the first limiting member 2213 includes a steering cylinder, which is disposed on the frame 10 and can slide up and down along the telescopic sleeve 210. The steering cylinder is provided with a plurality of locking grooves, and the outer wall of the telescopic sleeve 210 is provided with a plurality of locking blocks, and the locking grooves and locking blocks are engaged in a limiting cooperation.

[0039] Specifically, the steering cylinder is slidably mounted on the side wall of the frame 10 using a plate of the same material as the frame 10. It can be driven to slide up and down by means of hydraulic cylinders, telescopic rods, etc. The steering cylinder is positioned above the locking block, and the inner wall of the steering cylinder is provided with several locking grooves. The upper part of the locking groove is set in an inverted V-shape to facilitate automatic correction of the descent position. According to the bearing outer ring standard, each rotation of the locking groove enlarges or decreases the size by one specification. The width of the locking groove is the same as the width of the locking block, and the length of the locking groove is not greater than the telescopic stroke of the telescopic sleeve 210.

[0040] Furthermore, the outer ring of the bearing is placed below the first lower turntable 223, and the telescopic sleeve 210 extends downward in the vertical direction. The extension stops when the first lower turntable 223 is flush with the bottom of the outer ring of the bearing, and then it rotates. When the rotation ends (when the first locking pin 225 is fastened to the outside of the outer ring of the bearing), the steering cylinder is raised and lowered so that the locking groove on the steering cylinder is locked onto the locking block set on the telescopic sleeve 210, thereby restricting the rotation of the telescopic sleeve 210 and solving the problem of the outer ring of the bearing detaching due to the rotation of the telescopic sleeve 210 during processing.

[0041] Based on the above scheme, the telescopic sleeve 210 includes a fixed sleeve 211 and a lifting sleeve 212. The fixed sleeve 211 is rotatably connected to the frame 10, and the outer wall of the lifting sleeve 212 is provided with a plurality of protrusions. The steering sleeve is sleeved on the fixed sleeve 211, and the inner wall of the steering sleeve is provided with a plurality of grooves, and the protrusions slide in cooperation with the grooves.

[0042] The fixed cylinder 211 is connected to the lifting cylinder 212. The lifting cylinder 212 can move up and down vertically within the fixed cylinder 211 but cannot rotate. The protrusions and grooves are the same size. A gear disk 2212 is provided on the top of the fixed cylinder 211. The gear disk 2212 rotates the fixed cylinder 211 and the lifting cylinder 212 under the drive of the drive motor 2211. The lifting cylinder 212 is provided with protrusions, which are evenly and symmetrically arranged. The protrusions are preferably cylindrical. After the lifting cylinder 212 extends downward to the position, the gear disk 2212 drives the fixed cylinder 211 to rotate. After the first locking pin 225 is tightened on the outer ring of the bearing, the steering cylinder moves downward and causes the protrusions to enter the locking groove, thereby restricting the rotation of the telescopic sleeve 210 and solving the problem that the outer ring of the bearing will detach when the telescopic sleeve 210 rotates during processing.

[0043] In a preferred embodiment of this application, the positioning component 120 includes a second rotating member, a second upper turntable 122, a second lower turntable 123, and a plurality of second sliders 124. One end of the second rotating member is connected to the lower end face of the base 110, and the other end of the second rotating member is connected to the upper end face of the second upper turntable 122. The second upper turntable 122 is provided with a plurality of third sliding grooves, which are slidably connected to and limited in fit with the upper end face of the second sliders 124. The second lower turntable 123 is provided with a plurality of fourth sliding grooves, which are slidably connected to and limited in fit with the second sliders 124. The horizontal projection of the third sliding groove coincides with the horizontal projection of the fourth sliding groove. The second upper turntable 122 and the second lower turntable 123 are detachably connected by a connecting plate. A second locking post 125 is provided at one end of the lower end face of the second slider 124, which is used to position and lock the inner ring of the bearing.

[0044] Specifically, both the second upper turntable 122 and the second lower turntable 123 are discs, and a through hole is provided at the center of the disc. The number of the third and fourth slides is the same (the front end of the third and fourth slides in the rotation direction is the third position, and the end is the fourth position), and their projections in the horizontal direction coincide. The second upper turntable 122 and the second lower turntable 123 are connected by a plate to form a whole. The number of second sliders 124 is the same as the number of third slides, and the second sliders 124 are slidably connected in the third and fourth slides by bolts, screws, etc. (one end of the second slider 124 can slide from the third position to the fourth position as it rotates). Several second sliders 124 are provided between the second upper turntable 122 and the second lower turntable 123, and the side walls of two adjacent second sliders 124 are mutually limiting and cooperating. A locking post is provided at the end of the second slider 124 near the through hole at the center of the second upper turntable 122, and the locking post extends into the second lower turntable 123.

[0045] A working platform is provided below the positioning component 120. After the bearing inner ring is initially machined, it is placed on the working platform and adjusted to be below the second lower turntable 123.

[0046] Further, the pre-machined bearing inner ring is placed on the work platform and located below the second lower turntable 123. The base 110 extends downward in the vertical direction, causing the positioning component 120 to move downward, and the locking pins extend into the pre-machined bearing inner ring. The second rotating component drives the second upper turntable 122 to rotate, thereby causing the second slider 124 to slide from the third position to the fourth position. When all the locking pins on the second slider 124 are in contact with the inner wall of the pre-machined bearing inner ring, the second rotating component stops rotating, and several locking pins fix the pre-machined bearing inner ring for processing. After processing is completed, the second rotating component drives the second upper turntable 122 to rotate in the opposite direction, causing the second slider 124 to slide in the opposite direction to the third position, and then the bearing inner ring is removed.

[0047] The second rotating component drives the second upper turntable 122 and the second lower turntable 123 to rotate, causing several second sliders 124 to slide from the third position to the fourth position in the third and fourth slide grooves until they are in contact with the inner wall of the pre-processed bearing inner ring, and then stop rotating. Conversely, the bearing inner ring is removed by rotating in the opposite direction. The sliding and limiting cooperation of several second sliders 124 solves the problem that when bearings of different sizes are manufactured, multiple replacements of the positioning pins can easily lead to a decrease in the accuracy of the positioning pins, a reduction in their service life, and a relatively cumbersome and labor-intensive replacement process.

[0048] Furthermore, the first rotating member 221 rotates in the opposite direction to the second rotating member.

[0049] The first upper turntable 222, the first lower turntable 223, the second upper turntable 122, the second lower turntable 123, the first slider 224, and the second slider 124 in the fixing component 220 and the positioning component 120 all have the same structure. By rotating the first upper turntable 222 and the first lower turntable 223 clockwise (or counterclockwise), a number of first sliders 224 slide inward to reduce the clamping diameter. By rotating the second upper turntable 122 and the second lower turntable 123 counterclockwise (or clockwise), a number of second sliders 124 slide outward to increase the fixing diameter.

[0050] In a preferred embodiment of this application, the first upper turntable 222, the first lower turntable 223, the second upper turntable 122, and the second lower turntable 123 are all annular discs, and the inner diameters of the first upper turntable 222 and the first lower turntable 223 are not less than the outer diameters of the second upper turntable 122 and the second lower turntable 123.

[0051] The diameter of the through hole at the center of the second upper turntable 122 and the second lower turntable 123 is not less than the diameter of the inner ring of the minimum bearing. The angle of the third and fourth slide grooves is adjusted according to the width of the ring. The length of the third and fourth slide grooves is adjusted according to the circumference of the second upper turntable 122 and the second lower turntable 123. The rotation of the second upper turntable 122 drives the second lower turntable 123 to rotate together. When rotating, the third and fourth slide grooves rotate, causing the second slider 124 to slide accordingly, thus forming a circular motion.

[0052] Based on the above scheme, both the first slider 224 and the second slider 124 are rhomboid blocks. The first slider 224 (second slider 124) and the first locking post 225 (second locking post 125) are symmetrically provided with sliding posts at their opposite ends. Specifically, the number of first sliders 224 is set according to the number of first and second sliding grooves (third and fourth sliding grooves), and the angle of the first sliders 224 (second slider 124) is adjusted so that the sum of the angles of several first sliders 224 (second sliders 124) close to the center of the first upper turntable 222 (second upper turntable 122) and the first lower turntable 223 (second lower turntable 123) is 360°, and the side walls of adjacent first sliders 224 (second sliders 124) are in contact with each other and slide together.

[0053] When the base 110 descends, the second upper turntable 122 and the second lower turntable 123 pass through the interior of the first upper turntable 222 and the first lower turntable 223 under the drive of the base 110. This allows the inner or outer ring of the bearing to be manufactured through the lifting and positioning assembly 120 or the fixing assembly 220. Alternatively, the outer and inner rings of the bearing can be coaxially fixed by the first and second locking pins 225 and 125, allowing for simultaneous processing using the tooling for processing the inner and outer rings of the bearing, making the operation more convenient.

[0054] In the above scheme, the second rotating component includes an annular groove 1211 and an annular rod 1212. The annular groove 1211 is sleeved on the base 110, and the base 110 can move up and down within the annular groove 1211. The annular groove 1211 is connected to the frame 10. The annular rod 1212 is sleeved on the base 110, and the annular rod 1212 drives the base 110 to rotate through a motor. The annular rod 1212 is in a limiting engagement with the annular groove 1211.

[0055] Furthermore, the annular groove 1211 is provided with a plurality of U-shaped grooves, and the two ends of the annular rod 1212 are symmetrically provided with limiting rods, which can slide up and down along the U-shaped grooves.

[0056] The inner diameter of the annular groove 1211 is not less than the diameter of the base 110, and its outer side is fixedly connected to the frame 10. The length of the annular groove 1211 is not less than the lifting stroke of the base 110. Several U-shaped grooves are provided inside the annular groove 1211, and the distance between two adjacent U-shaped grooves is set according to the standard of the bearing inner ring. Each rotation of a U-shaped groove corresponds to a bearing inner ring of a certain size. The inner diameter of the annular locking rod 1212 is the same as the diameter of the base 110, and it can be connected to the base 110 by welding or bolts. The limiting rod extends to... Two are not required; an even number can be set for stability. After the base 110 rotates (after the locking pins have contacted the initially machined bearing inner ring), the base 110 descends again, and the limiting rod slides vertically into the U-shaped groove for limiting. This solves the problem that the second rotating component rotates during the machining of the bearing inner ring, causing the bearing inner ring to detach. Moreover, when machining bearing inner rings of the same size, the second rotating component only needs to rotate once, and subsequently, only the base 110 needs to be raised and lowered. This solves the problem of frequently adjusting the locking pin distance when the rotating shaft rotates during machining.

[0057] Based on the above scheme, the annular slot 1211 is provided with a plurality of U-shaped grooves, and the two ends of the annular rod 1212 are symmetrically provided with limiting rods, which can slide up and down along the U-shaped grooves.

[0058] The base 110 adopts a telescopic cylinder structure, which includes a telescopic rod and a cylinder. The cylinder is hung upside down on the top of the frame 10 and fixed. A limiting component is detachably installed on the telescopic rod. When the second rotating component needs to drive the base 110 to rotate, the limiting component is at the end away from the cylinder. After the base 110 has rotated, the limiting component moves to the end closer to the cylinder. By adjusting the distance of the limiting component, the problem of the second rotating component rotating is solved, which is that the annular retaining rod 1212 will not disengage from the annular retaining groove 1211 due to the telescopic cylinder moving too much during the processing of the inner ring of the bearing of the same size.

[0059] In the above solution, the limiting component includes a pin and two positioning holes disposed at the telescopic end of the telescopic cylinder. The two positioning holes are arranged in sequence along the telescopic direction of the telescopic cylinder, and the pin is detachably connected to the positioning holes.

[0060] The telescopic cylinder includes a telescopic rod and a cylinder. Two positioning holes are provided at the end of the telescopic rod near the cylinder. The length of the pin is greater than the diameter of the cylinder. When the second rotating component needs to rotate, the pin is inserted into the positioning hole near the ground. At this time, the telescopic rod rises, causing the annular locking rod 1212 to disengage from the annular locking groove 1211, and is then rotated by the second rotating component. Conversely, when the second rotating component does not need to rotate, the pin is inserted into the positioning hole away from the ground. The extension and retraction stroke of the telescopic rod is shortened, and the annular locking rod 1212 remains in the annular locking groove 1211, thereby preventing the problem of the bearing inner ring disengaging due to the rotation of the second rotating component.

[0061] The above embodiments merely illustrate 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. An external fixing device for an annular ring, characterized in that, include: A lifting assembly includes a base and a telescopic sleeve. One end of the base is mounted on the frame and can be raised and lowered vertically. The other end of the base is connected to a positioning assembly for fixing the inner ring of a bearing. The telescopic sleeve is mounted on the base and rotatably connected to the frame, and can be raised and lowered vertically. A fixing assembly includes a first rotating component, a first upper turntable, a first lower turntable, and a plurality of first sliders. One end of the first rotating component is connected to the lower end face of the telescopic sleeve, and the other end of the first rotating component is connected to the upper end face of the first upper turntable. The first upper turntable is provided with a plurality of first sliding grooves, which are slidably connected to and limit-fitted with the upper end face of the first sliders. The first lower turntable is provided with a plurality of second sliding grooves, which are slidably connected to and limit-fitted with the first sliders. The horizontal projections of the first sliding grooves and the second sliding grooves coincide. A first locking post is provided at one end of the lower end face of the first slider, which is used to position and clamp the outer ring of the bearing.

2. The annular external fixing device according to claim 1, characterized in that, The first rotating component includes a drive motor, a gear disk, and a first limiting component. The drive motor is mounted on the frame, the gear disk is fixed to one end of the telescopic sleeve and is connected to the drive motor in a transmission manner, and the first limiting component is sleeved on the telescopic sleeve and connected to the frame to limit the rotation of the telescopic sleeve.

3. The annular external fixing device according to claim 2, characterized in that, The first limiting component includes a steering cylinder, which is disposed on the frame and can slide up and down along the telescopic sleeve. The steering cylinder is provided with a plurality of locking grooves, and the outer wall of the telescopic sleeve is provided with a plurality of locking blocks. The locking grooves and the locking blocks are engaged in a limiting cooperation.

4. The annular ring external fixing device according to claim 3, characterized in that, The telescopic sleeve includes a fixed sleeve and a lifting sleeve. The fixed sleeve is rotatably connected to the frame. The outer wall of the lifting sleeve is provided with several protrusions. The steering sleeve is sleeved on the fixed sleeve, and the inner wall of the steering sleeve is provided with several grooves. The protrusions slide in cooperation with the grooves.

5. The annular external fixing device according to claim 2, characterized in that, The positioning assembly includes a second rotating component, a second upper turntable, a second lower turntable, and a plurality of second sliders. One end of the second rotating component is connected to the lower end face of the base, and the other end of the second rotating component is connected to the upper end face of the second upper turntable. The second upper turntable is provided with a plurality of third sliding grooves, which are slidably connected to and limit-fitted with the upper end face of the second sliders. The second lower turntable is provided with a plurality of fourth sliding grooves, which are slidably connected to and limit-fitted with the second sliders. The horizontal projections of the third sliding grooves and the fourth sliding grooves coincide. The second upper turntable and the second lower turntable are detachably connected using a connecting plate. A second locking post is provided at one end of the lower end face of the second slider, which is used for positioning and locking the inner ring of the bearing.

6. The annular ring external fixing device according to claim 5, characterized in that, The first rotating component rotates in the opposite direction to the second rotating component.

7. The annular ring external fixing device according to claim 5, characterized in that, The first upper turntable, the first lower turntable, the second upper turntable, and the second lower turntable are all annular discs, and the inner diameter of the first upper turntable and the first lower turntable is not less than the outer diameter of the second upper turntable and the second lower turntable.

8. The annular external fixing device according to claim 6, characterized in that, The second rotating component includes an annular groove and an annular rod. The annular groove is sleeved on the base, and the base can move up and down within the annular groove. The annular groove is connected to the frame. The annular rod is sleeved on the base, and the annular rod drives the base to rotate through a motor. The annular rod is in a limiting engagement with the annular groove.

9. The annular ring external fixing device according to claim 8, characterized in that, The annular groove is provided with several U-shaped grooves, and the two ends of the annular rod are symmetrically provided with limiting rods, which can slide up and down along the U-shaped grooves.

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