Machine tool for automatically grinding inside and outside of bearing outer ring

Abstract

The invention relates to an inside and outside automatic polishing machine tool for a bearing outer ring, which belongs to the technical field of polishing machine tools, and comprises a machine tool main body, and an inner ring polishing mechanism and an outer ring polishing mechanism for polishing the bearing outer ring are mounted on a bracket; the support is provided with a synchronous adjusting device used for synchronously adjusting the inner ring grinding mechanism and the outer ring grinding mechanism to be close to or away from the bearing outer ring. A clamp used for clamping the upper end and the lower end of a bearing outer ring is installed in the machine tool body. The single driving motor drives the inner ring grinding mechanism and the outer ring grinding mechanism to rotate, so that the inner ring grinding mechanism and the outer ring grinding mechanism grind the inner side and the outer side of a bearing outer ring, and simultaneous grinding can be achieved; the synchronous adjusting device drives the fine adjustment motor to drive the outer ring grinding wheel and the outer ring grinding wheel to be close to or away from the bearing outer ring at the same time, stress of the inner circumferential face and the outer circumferential face of the bearing outer ring can be effectively balanced, and therefore the bearing outer ring is prevented from deforming during grinding.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machine tools, in particular to an automatic grinding machine tool for the inner and outer sides of a bearing outer ring. Background Art

[0002] Bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, rolling bearings have been standardized and serialized, but compared with sliding bearings, their radial size, vibration and noise are larger, and the price is also higher. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. According to the shape of the rolling element, rolling bearings are divided into two categories: ball bearings and roller bearings. Grinding machines are machine tools that use grinding tools to grind the surface of workpieces. Most grinders use high-speed rotating grinding wheels for grinding. A few use other grinding tools such as oilstones and sanding belts and free abrasives for processing, such as honing machines, superfinishing machines, belt grinders, grinders and polishing machines. The existing outer ring of the bearing needs to be polished when it is finished. The existing grinding machine tools cannot effectively grind the inner and outer walls of the outer ring at the same time, and it is easy to cause obstructions during grinding, affecting the grinding effect and efficiency. The fixing performance is poor and displacement is easy to occur during grinding, which affects the accuracy of the outer ring and makes the outer ring unable to meet the use requirements. Summary of the invention

[0003] The present invention aims to solve the above technical problems and provides a machine tool for automatically grinding the inner and outer sides of a bearing outer ring.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0005] A machine tool for automatically grinding the inner and outer sides of a bearing outer ring, comprising a machine tool body, a bracket adjusted in the machine tool body, and a telescopic cylinder fixedly connected to the machine tool body, wherein an inner ring grinding mechanism and an outer ring grinding mechanism for grinding the outer ring of the bearing are installed on the bracket;

[0006] The bracket is provided with a synchronous adjustment device for synchronously adjusting the inner ring grinding mechanism and the outer ring grinding mechanism to be close to or away from the outer ring of the bearing;

[0007] A fixture for clamping the upper and lower ends of the outer ring of the bearing is installed in the main body of the machine tool;

[0008] The inner ring grinding mechanism is provided with an auxiliary clamping device for auxiliary clamping;

[0009] A driving motor for driving the inner ring grinding mechanism and the outer ring grinding mechanism to rotate and grind is installed on the bracket. A fixed bracket is bolted to one side of the driving motor, and the telescopic end of the telescopic cylinder is connected to the fixed bracket.

[0010] Preferably, the inner ring grinding mechanism includes a connecting column rotatably connected on the bracket, three groups of driving sprockets and a driving chain, the driving chain is wound around the outer sides of the three groups of driving sprockets, and the three groups of driving sprockets are all equipped with fixed shafts, the upper and lower ends of the fixed shaft are provided with connecting plates through bearings, and the other end of the connecting plate is fixedly connected to the connecting column, a connecting frame is installed on the outer side of the fixed shaft, a rotatable inner ring grinding wheel is installed on the connecting frame, a fine-tuning motor is bolted to the bracket, and one side of the fine-tuning motor is connected to the connecting plate, one of the rotating ends of the fixed shaft is connected to the fine-tuning motor, and the driving sprocket is driven by the fine-tuning motor to rotate, driving the inner ring grinding wheel to move closer to or away from the outer ring of the bearing, and the upper end of the connecting column is connected to the output end of the driving motor.

[0011] Preferably, the outer ring grinding mechanism includes a grinding shell and an outer ring grinding wheel, a C-shaped grinding frame is slidably connected in the grinding shell and the outer ring grinding wheel is rotatably connected in the C-shaped grinding frame through a bearing, a telescopic rod is installed in the grinding shell, a push block is installed at the telescopic end of the telescopic rod, a blocking block is installed at the lower end of the C-shaped grinding frame and the blocking block is located in the push block, and a first fixed plate is installed between the bracket and the grinding shell.

[0012] Preferably, the synchronous adjustment device includes a driven shaft of a bearing-connected bracket, a first driven sprocket installed at both ends of the driven shaft and a second driven sprocket connected to the outside of a connecting column through a bearing, the lower end of the driving sprocket is connected to a third driven sprocket, the two first driven sprockets are respectively connected to the second driven sprocket and the driving sprocket through chains, the lower end of the second driven sprocket is installed with a follower pulley, a slider is installed on the C-shaped grinding frame, a fixed wheel is fixedly connected to the slider, and the follower pulley and the fixed wheel are connected by a rope.

[0013] Preferably, a slide groove for cooperating with a slider is provided on the polishing shell, a movable column is installed on one side of the C-shaped polishing frame and the movable column passes through the polishing shell, and a return spring is installed on the outside of the movable column and between the polishing shell and the C-shaped polishing frame.

[0014] Preferably, the fixture includes a base installed in the machine tool body and a first piston cylinder evenly arranged on the base, a groove and a chamber connected to the first piston cylinder are provided on the inner side of the upper end of the base, a first piston is installed in the first piston cylinder, a support column is installed on the first piston to resist the outer ring of the bearing, a movable annular piston is installed in the groove, multiple groups of second fixed plates are installed on the outer side of the bracket, a guide column is installed at the lower end of the second fixed plate, a limiting ring is installed at the lower end of the guide column and the limiting ring extends to the groove, a first rolling wheel that resists the annular piston is installed at the lower end of the limiting ring, and a second rolling wheel that resists the upper end of the outer ring of the bearing is installed at the lower end of the second fixed plate.

[0015] Preferably, the auxiliary clamping device includes a movable shaft, a third piston outside the movable shaft and an adjusting cylinder, a sealed chamber for cooperating with the movement of the third piston is provided in the adjusting cylinder, the movable shaft passes through the adjusting cylinder and can move on the adjusting cylinder, the active chain is disconnected in the middle and the two ends are respectively connected to the two ends of the movable shaft, a connecting block is installed between the adjusting cylinder and the connecting column, a movable groove is provided on the inner side of the lower end of the connecting column, a connecting groove is provided in the connecting block, and the connecting groove connects the movable groove and the sealed chamber, a fourth piston is installed in the movable groove and below the connecting groove, a movable block is installed at the lower end of the fourth piston, and a ball is movably connected to the lower end of the movable block.

[0016] Preferably, a second piston cylinder and a fifth piston in the second piston cylinder are installed at the center of the base, a limit block is installed on the fifth piston, and a movable groove for cooperating with the ball is provided at the upper end of the limit block.

[0017] After adopting the above structure, the present invention has the following advantages:

[0018] 1. The present invention drives the inner ring grinding mechanism and the outer ring grinding mechanism to rotate by a single driving motor, so that the inner and outer sides of the outer ring of the bearing can be ground simultaneously;

[0019] 2. The fine-tuning motor of the synchronous adjustment device of the present invention can simultaneously drive the outer ring grinding wheel and the outer ring grinding wheel to approach or move away from the outer ring of the bearing, which can effectively balance the stress of the inner and outer peripheral surfaces of the outer ring of the bearing, thereby preventing the outer ring of the bearing from being deformed during grinding;

[0020] 3. The present invention limits the outer ring of the bearing through a clamp and an auxiliary clamping device to ensure good fixation during grinding and no displacement during grinding. When in the deepening grinding mode, the auxiliary clamping device can reinforce the outer ring of the bearing, so that the grinding accuracy is high and the outer ring meets the use requirements.

[0021] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is the internal installation schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the outer ring of the bearing of the present invention when being polished;

[0026] Figure 4 It is a structural schematic diagram of the inner ring grinding mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the synchronous adjustment device of the present invention;

[0028] Figure 6 is an exploded view of the clamp of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the base of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the regulating cylinder of the present invention;

[0031] Fig. 9 is a top view of the outer ring grinding mechanism of the present invention;

[0032] Fig.10 The present invention Fig. 9 AA section view;

[0033] Fig.11 The present invention Fig.10 Schematic diagram of the structure;

[0034] Fig.12 The present invention Fig. 9 Schematic diagram of the BB cross-sectional structure.

[0035] As shown in the figure: 1. Machine tool body; 2. Synchronous adjustment device; 201. Driven shaft; 202. First driven sprocket; 203. Second driven sprocket; 204. Third driven sprocket; 205. Slave pulley; 206. Fixed wheel; 3. Telescopic cylinder; 4. Inner ring grinding mechanism; 401. Connecting column; 402. Driving sprocket; 403. Driving chain; 404. Fixed shaft; 405. Connecting plate; 406. Connecting frame; 407. Inner ring grinding wheel; 408. Fine-tuning motor; 5. Outer ring grinding mechanism; 501. Grinding shell; 502. Outer ring grinding wheel; 503. Telescopic rod; 504. Push block; 505. Block block; 506. C-type grinding frame; 507. First fixed plate; 6. Bracket; 7. Clamp; 701. Base; 702. First piston Cylinder; 703, groove; 704, chamber; 705, first piston; 706, support column; 707, annular piston; 708, second fixed plate; 709, guide column; 710, limit ring; 711, first rolling wheel; 712, second rolling wheel; 8, auxiliary clamping device; 801, moving shaft; 802, third piston; 803, adjusting cylinder; 804, sealing chamber; 805, connecting block; 806, moving groove; 807, connecting groove; 808, fourth piston; 809, moving block; 810, sphere; 811, second piston cylinder; 812, fifth piston; 813, limit block; 814, movable groove; 9, driving motor; 10, fixed bracket; 11, bearing outer ring; 12, slide groove; 13, moving column; 14, reset spring. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The present invention is further described in detail below in conjunction with the full text.

[0039] Combined with Figure 1-Figure 12A machine tool for automatically grinding the inner and outer sides of a bearing outer ring comprises a machine tool body 1, a bracket 6 adjusted in the machine tool body 1 and a telescopic cylinder 3 fixedly connected to the machine tool body 1, an inner ring grinding mechanism 4 and an outer ring grinding mechanism 5 for grinding a bearing outer ring 11 are installed on the bracket 6, a driving motor 9 for driving the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 to rotate and grind is installed on the bracket 6, the upper end of a connecting column 401 is connected to the output end of the driving motor 9, a fixed bracket 10 is bolted to one side of the driving motor 9, a telescopic end of the telescopic cylinder 3 is connected to the fixed bracket 10, the telescopic cylinder 3 drives the driving motor 9 on one side of the fixed bracket 10 to move downward toward or away from the bearing outer ring 11, and the driving motor 9 drives the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 to rotate to grind the inner and outer sides of the bearing outer ring 11.

[0040] When the present invention is specifically implemented, Figure 3 , Figure 4 and Figure 5As shown, the inner ring grinding mechanism 4 includes a connecting column 401 rotatably connected to the bracket 6, three groups of driving sprockets 402 and a driving chain 403, the driving chain 403 is wound around the outside of the three groups of driving sprockets 402 to form an equilateral triangle, the connecting column 401 is connected to the bracket 6 through a bearing, and the three groups of driving sprockets 402 are all equipped with a fixed shaft 404, the fixed shaft 404 and the driving sprocket 402 are fixedly connected, and the upper and lower ends of the fixed shaft 404 are provided with a connecting plate 405 through a bearing, and the other end of the connecting plate 405 is fixedly connected to the connecting column 401, specifically, one side of the connecting plate 405 is connected to the connecting column 401, and the upper and lower ends of the fixed shaft 404 are rotatably connected between the two connecting plates 405 through bearings, so that the driving sprocket 402 and the fixed shaft 404 rotate on the connecting plate 405, and the connecting plate 405 is a three-group setting for matching the three groups of driving sprockets 402, and a connecting frame 406 is installed on the outer side of the fixed shaft 404, and a rotatable inner ring grinding wheel 407 is installed on the connecting frame 406, and the inner ring grinding wheel 407 can be connected to the connecting frame 406 through a shaft and a bearing. The driving sprocket 402 rotates to drive the connecting frame 406 to adjust, so that the inner ring grinding wheel 407 is close to or away from the inner side of the bearing outer ring 11. The bracket 6 is bolted with a fine-tuning motor 408, and one side of the fine-tuning motor 408 is connected to the connecting plate 405. The bracket 6 and the connecting plate 405 are both connected to the fine-tuning motor 408 through the motor bracket and bolts. One of the fixed shafts 404 is connected to the rotating end of the fine-tuning motor 408, and the driving sprocket 402 is driven by the fine-tuning motor 408 to rotate and drive the inner ring grinding wheel 407 to move close to or away from the bearing outer ring 1 1. The output end of the fine-tuning motor 408 can pass through the connecting plate 405 (or connect the connecting plate 405 through a bearing) and connect with the fixed shaft 404. The fine-tuning motor 408 is a prior art and will not be described in detail here. It can be controlled by a controller to rotate and reversely rotate. The speed of the fine-tuning motor 408 is very slow, which belongs to the angle adjustment rotation. The output end of the fine-tuning motor 408 can drive the fixed shaft 404 to rotate, drive the fixed shaft 404 to rotate and adjust, and drive the inner ring grinding wheel 407 to approach or move away from the outer ring 11 of the bearing through the connecting frame 406.

[0041] Specifically, the number of inner ring grinding wheels 407 and outer ring grinding wheels 502 is set correspondingly, and both are set in three groups, and an equilateral triangle structure is formed between the three groups of driving sprockets 402.

[0042] When the present invention is specifically implemented, Figure 3 , Fig. 9 , Fig.10 and Fig.11As shown, the outer ring grinding mechanism 5 includes a grinding shell 501 and an outer ring grinding wheel 502. A C-shaped grinding frame 506 is slidably connected in the grinding shell 501, and the outer ring grinding wheel 502 is rotatably connected in the C-shaped grinding frame 506 through a bearing. The outer ring grinding wheel 502 is connected in the C-shaped grinding frame 506 through a shaft and a bearing, and the outer ring grinding wheel 502 protrudes outward, and the outer ring grinding wheel 502 extends to the outside of the grinding shell 501, and can be rotated to grind the outer ring of the bearing outer ring 11. A telescopic rod 503 is installed in the grinding shell 501, and a push block 504 is installed at the telescopic end of the telescopic rod 503. The C-shaped grinding frame 50 A block 505 is installed at the lower end of 6 and the block 505 is located in the push block 504. The push block 504 and the block 505 are movably connected. When the telescopic rod 503 is used in conjunction with the synchronous adjustment device 2, it does not directly push the outer ring grinding wheel 502 to move, but plays a role of limiting and supporting the C-type grinding frame 506 and the outer ring grinding wheel 502. A first fixed plate 507 is installed between the bracket 6 and the grinding shell 501. The first fixed plate 507 is connected to the bracket 6. The bracket 6 is driven to rotate through the connecting column 401, thereby driving the outer ring grinding wheel 502 to rotate to grind the outer ring of the bearing outer ring 11.

[0043] When the present invention is specifically implemented, Figure 3 , Figure 4 and 5 As shown, a synchronous adjustment device 2 for synchronously adjusting the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 to be close to or away from the bearing outer ring 11 is installed on the bracket 6, and the synchronous adjustment device 2 includes a driven shaft 201 connected to the bracket 6 by a bearing, a first driven sprocket 202 installed at both ends of the driven shaft 201, and a second driven sprocket 203 connected to the outside of the connecting column 401 through a bearing, and the lower end of the driving sprocket 402 is connected to the third driven sprocket 204, and the two first driven sprockets 202 are respectively connected to the second driven sprocket 203 and the driving sprocket 402 through a chain, and the lower end of the second driven sprocket 203 is installed with a follower pulley 205, specifically, the follower pulley 205 is set or connected to the connecting column 401 through a bearing, so that the follower pulley 205 can be pulled on the outside of the connecting column 401 by an external force. The C-shaped grinding frame 506 is provided with a slider, and a fixed wheel 206 is fixedly connected to the slider. The slave pulley 205 and the fixed wheel 206 are connected by a rope. When the slave pulley 205 rotates under the drive of an external force, the fixed wheel 206 can be driven to move by the rope. One of the connecting plates 405 extends to the driven shaft 201. The driven shaft 201 is connected to the connecting plate 405 through a bearing. The connecting plate 405 and the bracket 6 can limit the driven shaft 201. The driven shaft 201 can rotate on the connecting plate 405 and the bracket 6 through the bearing, driving the first driven sprocket 202 and the second driven sprocket 203 to rotate, thereby driving the slave pulley 205 to rotate through the rope pulling, and the fixed wheel 206 slides on the grinding shell 501, so that the outer ring grinding wheel 502 is close to the outer ring 11 of the bearing.

[0044] Specifically, a slide groove 12 for cooperating with the slider is provided on the grinding shell 501, and the rope pulls the C-type grinding frame 506 to slide in the slide groove 12 through the slider, the telescopic rod 503 is stretched to adjust the auxiliary support and limit, and the reset spring 14 is stretched. When the rope loses external force, the telescopic rod 503 is reset, and the contraction of the reset spring 14 will drive the C-type grinding frame 506 to reset away from the outer ring 11 of the bearing. A movable column 13 is installed on one side of the C-type grinding frame 506, and the movable column 13 passes through the grinding shell 501. A movable hole for cooperating with the movable column 13 is provided on the C-type grinding frame 506, and a reset spring 14 is installed on the outside of the movable column 13 and between the grinding shell 501 and the C-type grinding frame 506.

[0045] The effects of the synchronous adjustment device 2 are:

[0046] The driving sprocket 402 is driven to rotate and fine-tune through a driving source (fine-tuning motor 408), and the inner ring grinding wheel 407 is driven to approach the outer ring 11 of the bearing through the connecting frame 406. Since the driving sprocket 402 is connected to the third driven sprocket 204, the third driven sprocket 204 can be driven to rotate, and the second driven sprocket 203 is driven to rotate and fine-tune through the driven shaft 201, the first driven sprocket 202 and the chain, thereby driving the slave pulley 205 to rotate and pull the fixed wheel 206 to slide on the grinding shell 501 through the rope, so that the outer ring grinding wheel 502 is close to the outer ring 11 of the bearing.

[0047] When the present invention is specifically implemented, Figure 5 , Figure 6 , Figure 7 and Fig.12As shown, a fixture 7 for clamping the upper and lower ends of the bearing outer ring 11 is installed in the machine tool body 1, and the fixture 7 includes a base 701 installed in the machine tool body 1 and a first piston cylinder 702 evenly arranged on the base 701. A groove 703 and a chamber 704 connected to the first piston cylinder 702 are provided on the inner side of the upper end of the base 701. A first piston 705 is installed in the first piston cylinder 702. A support column 706 is installed on the first piston 705 to resist the bearing outer ring 11. A movable annular piston 707 is installed in the groove 703. The groove 703 area at the lower end of the annular piston 707 and the chamber 704 area at the lower end of the first piston 705 form a sealing area, and the sealing area can be sealed gas or sealed liquid. When the bearing outer ring 11 is placed on the support column 706 and is subjected to an external force downward, the first piston 705 moves downward and drives the annular piston 707 to move upward through the sealing gas or sealing liquid in the sealing area. The movements of the annular piston 707 and the first piston 705 are mutual. Multiple groups of second fixed plates 708 are installed on the outer side of the bracket 6. A guide column 709 is installed at the lower end of the second fixed plate 708. A limiting ring 710 is installed at the lower end of the guide column 709 and the limiting ring 710 extends to the groove 703. A first rolling wheel 711 is installed at the lower end of the limiting ring 710 to resist the annular piston 707, and a second rolling wheel 712 is installed at the lower end of the second fixed plate 708 to resist the upper end of the bearing outer ring 11.

[0048] Under normal circumstances, the first rolling wheel 711 and the second rolling wheel 712 are driven by the telescopic cylinder 3 to approach the bearing outer ring 11 and the annular piston 707, so that the force exerted on the annular piston 707 and the bearing outer ring 11 is limited. The first rolling wheel 711 and the second rolling wheel 712 are driven by the drive motor 9 to rotate and move at the upper ends of the annular piston 707 and the bearing outer ring 11. The first rolling wheel 711 is against the annular piston 707, and the second rolling wheel 712 is against the upper end of the bearing outer ring 11. The lower end of the bearing outer ring 11 is supported by the support column 706, so that the bearing outer ring 11 will not be displaced during grinding.

[0049] When the present invention is specifically implemented, Figure 7 , Figure 8 and Fig.12As shown, an auxiliary clamping device 8 for auxiliary clamping 7 is installed on the inner ring grinding mechanism 4, and the auxiliary clamping device 8 includes a moving shaft 801, a third piston 802 and an adjusting cylinder 803 outside the moving shaft 801. A sealed cavity 804 for cooperating with the movement of the third piston 802 is provided in the adjusting cylinder 803. The moving shaft 801 passes through the adjusting cylinder 803 and can move on the adjusting cylinder 803. The moving shaft 801 can be driven to move by the active chain 403, thereby driving the third piston 802 to move in the sealed cavity 804. The moving groove 806 and the sealed cavity 804 area between the fourth piston 808 and the third piston 802 are sealed areas. The sealed area can be a sealed gas or a sealed liquid. The moving chain 403 is disconnected in the middle and its two ends are respectively connected to the two ends of the moving shaft 801, a connecting block 805 is installed between the adjusting cylinder 803 and the connecting column 401, a moving groove 806 is provided on the inner side of the lower end of the connecting column 401, a connecting groove 807 is provided in the connecting block 805, and the connecting groove 807 connects the moving groove 806 and the sealing chamber 804, a fourth piston 808 is installed in the moving groove 806 and below the connecting groove 807, a moving block 809 is installed at the lower end of the fourth piston 808, the moving block 809 extends to the outer side of the lower end of the connecting column 401, a ball 810 is movably connected to the lower end of the moving block 809, a ball groove is provided at the lower end of the moving block 809, and the ball 810 can rotate in the ball groove. Most of the sphere 810 is located in the ball groove, and a second piston cylinder 811 and a fifth piston 812 in the second piston cylinder 811 are installed at the center of the base 701. A limit block 813 is installed on the fifth piston 812. The upper end of the limit block 813 is provided with a movable groove 814 for cooperating with the sphere 810. The bottom of the lower end of the second piston cylinder 811 is connected to the first piston cylinder 702 through a pipeline. Driven by the telescopic cylinder 3, the sphere 810 falls into the movable groove 814, and the fifth piston 812 is driven by the limit block 813 to move downward in the second piston cylinder 811, compressing the sealing gas or sealing liquid below the second piston cylinder 811, and connecting the chamber 704 through a pipeline, so that the first piston 705 or the annular piston 707 is upward.

[0050] Specifically, piston rings are installed on the outer sides of the first piston 705, the second piston cylinder 811, the third piston 802, the fourth piston 808, the fifth piston 812 and the annular piston 707, which can achieve a sealing movement effect and prevent gas or liquid from flowing out.

[0051] The linked seal of the clamp 7 and the auxiliary clamp 8 has three effects (three machine tool modes):

[0052] 1. Positioning mode: when the telescopic cylinder 3 is extended to drive the clamp 7 and the auxiliary clamping device 8 on the bracket 6 to approach the outer ring 11 of the bearing, the ball 810 of the auxiliary clamping device 8 will fall into the movable groove 814 of the limit block 813 to achieve the positioning effect;

[0053] 2. Preliminary grinding mode: when the first rolling wheel 711 abuts against the annular piston 707, the second rolling wheel 712 abuts against the upper end of the bearing outer ring 11, and the support column 706 abuts against the lower end of the bearing outer ring 11, preliminary limiting is achieved. At this time, the bearing outer ring 11 is clamped by the clamp 7 and the auxiliary clamping device 8. The inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 are driven by the driving motor 9 to grind the inner and outer rings of the bearing outer ring 11;

[0054] 3. Deepening grinding mode. When the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 have been grinding the bearing outer ring 11 for a period of time and the grinding requirements have not been met, and the bearing outer ring 11 needs to be further ground, the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 are driven and adjusted to be close to the bearing outer ring 11 through the synchronous adjustment device 2. At this time, the friction force increases, which will affect the fixing effect of the bearing outer ring 11. The present invention designs an auxiliary clamping device 8. When the synchronous adjustment device 2 drives and adjusts the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5, the third piston 802 is driven to move in the sealing chamber 804 at the same time, and the sealing gas or sealing liquid is compressed and connected to the chamber 704 through a pipeline, so that the sealing gas or sealing liquid in the sealing area of ​​the chamber 704 changes, which will push the first piston 705 or the annular piston 707 to move upward, thereby further clamping the bearing outer ring 11.

[0055] Specifically, the telescopic cylinder 3 remains in an extended state in the preliminary grinding mode and the deepening grinding mode, and always maintains the distance of the positioning mode. The positioning mode and the preliminary grinding mode are to limit the bearing outer ring 11 by extending the telescopic cylinder 3, and the deepening grinding mode is to deepen the limit on the bearing outer ring 11 again by the auxiliary clamping device 8.

[0056] Working principle of the present invention:

[0057] Open the machine tool body 1, put the bearing outer ring 11 on the support column 706, extend the telescopic cylinder 3 to drive the clamp 7 and the auxiliary clamping device 8 on the bracket 6 close to the bearing outer ring 11, the limit ring 710 enters the groove 703, and the ball 810 of the auxiliary clamping device 8 falls into the movable groove 814 of the limit block 813. The first rolling wheel 711 is against the annular piston 707, and the second rolling wheel 712 is against the upper end of the bearing outer ring 11 to clamp the bearing outer ring 11. At the same time, the output end of the fine-tuning motor 408 drives the fixed shaft 404 to rotate, drives the fixed shaft 404 to rotate and adjust, drives the inner ring grinding wheel 407 to approach the bearing outer ring 11, and the active sprocket 402 drives the third from The driven sprocket 204 rotates, and drives the second driven sprocket 203 to rotate and fine-tune through the driven shaft 201 and the first driven sprocket 202, thereby driving the slave pulley 205 to rotate and pull through the rope, and the fixed wheel 206 slides on the grinding shell 501, so that the outer ring grinding wheel 502 is close to the outer ring 11 of the bearing, and the return spring 14 is stretched. This is the preliminary grinding mode. Driven by the driving motor 9, the first rolling wheel 711 rotates on the annular piston 707 and the second rolling wheel 712 rotates on the outer ring 11 of the bearing, so that the outer ring 11 of the bearing will not be displaced when grinding, and at the same time, the outer ring grinding wheel 502 and the inner ring grinding wheel 407 are driven to rotate to grind the inner and outer rings of the outer ring 11 of the bearing;

[0058] When the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 have been grinding the bearing outer ring 11 for a period of time and have not yet met the grinding requirements, and the bearing outer ring 11 needs to be further ground, the inner ring grinding mechanism 4 and the outer ring grinding mechanism 5 are driven and adjusted by the synchronous adjustment device 2 to be close to the bearing outer ring 11. At this time, the friction force increases, which will affect the fixing effect of the bearing outer ring 11. The present invention designs an auxiliary clamping device 8, which moves the third piston 802 in the sealing chamber 804 to compress the sealing gas or sealing liquid, and connects it to the chamber 704 through a pipeline, so that the sealing gas or sealing liquid in the sealing area of ​​the chamber 704 changes, which will push the first piston 705 or the annular piston 707 to move upward, thereby further clamping the bearing outer ring 11. At this time, it is a deepening grinding mode. Under the drive of the driving motor 9, the outer ring grinding wheel 502 and the inner ring grinding wheel 407 are driven to rotate to deepen the grinding of the inner and outer rings of the bearing outer ring 11, so that the bearing outer ring 11 meets the finished product requirements.

[0059] The present invention and its embodiments are described above, and such description is not restrictive. What is shown in the full text is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A machine tool for automatically grinding the inner and outer surfaces of a bearing outer ring, comprising a machine tool body (1), a bracket (6) adjustable in the machine tool body (1), and a telescopic cylinder (3) fixedly connected to the machine tool body (1), characterized in that: The bracket (6) is provided with an inner ring grinding mechanism (4) and an outer ring grinding mechanism (5) for grinding the outer ring (11) of the bearing; The bracket (6) is provided with a synchronous adjustment device (2) for synchronously adjusting the inner ring grinding mechanism (4) and the outer ring grinding mechanism (5) to be close to or away from the bearing outer ring (11); A clamp (7) for clamping the upper and lower ends of the bearing outer ring (11) is installed in the machine tool body (1); The inner ring grinding mechanism (4) is provided with an auxiliary clamping device (8) for assisting the clamping of the clamp (7); A driving motor (9) for driving the inner ring grinding mechanism (4) and the outer ring grinding mechanism (5) to rotate and grind is installed on the bracket (6); a fixed bracket (10) is bolted to one side of the driving motor (9); and the telescopic end of the telescopic cylinder (3) is connected to the fixed bracket (10).

2. According to claim 1, a machine tool for automatically grinding the inner and outer sides of a bearing outer ring, characterized in that: The inner ring grinding mechanism (4) comprises a connecting column (401) rotatably connected to a bracket (6), three groups of driving sprockets (402) and a driving chain (403), wherein the driving chain (403) is wound around the outside of the three groups of driving sprockets (402), and the three groups of driving sprockets (402) are all equipped with a fixed shaft (404), the upper and lower ends of the fixed shaft (404) are provided with a connecting plate (405) through a bearing, and the other end of the connecting plate (405) is fixedly connected to the connecting column (401), and the outside of the fixed shaft (404) is equipped with a connecting frame (406), a rotatable inner ring grinding wheel (407) is installed on the connecting frame (406), a fine-tuning motor (408) is bolted to the bracket (6), and one side of the fine-tuning motor (408) is connected to the connecting plate (405), one of the fixed shafts (404) is connected to the rotating end of the fine-tuning motor (408), and the driving sprocket (402) is driven by the fine-tuning motor (408) to rotate and drive the inner ring grinding wheel (407) to approach or move away from the outer ring (11) of the bearing, and the upper end of the connecting column (401) is connected to the output end of the driving motor (9).

3. The automatic inner and outer grinding machine for the outer ring of a bearing according to claim 2, characterized in that: The outer ring grinding mechanism (5) comprises a grinding shell (501) and an outer ring grinding wheel (502); a C-shaped grinding frame (506) is slidably connected inside the grinding shell (501), and the outer ring grinding wheel (502) is rotatably connected inside the C-shaped grinding frame (506) via a bearing; a telescopic rod (503) is installed inside the grinding shell (501), a push block (504) is installed at the telescopic end of the telescopic rod (503); a blocking block (505) is installed at the lower end of the C-shaped grinding frame (506), and the blocking block (505) is located inside the push block (504); and a first fixing plate (507) is installed between the bracket (6) and the grinding shell (501).

4. The automatic inner and outer grinding machine tool for the outer ring of a bearing according to claim 3, characterized in that: The synchronous adjustment device (2) comprises a driven shaft (201) of a bearing-connected bracket (6), a first driven sprocket (202) mounted at both ends of the driven shaft (201) and a second driven sprocket (203) connected to the outside of a connecting column (401) through a bearing, a third driven sprocket (204) is connected to the lower end of the driving sprocket (402), the two first driven sprockets (202) are respectively connected to the second driven sprocket (203) and the driving sprocket (402) through a chain, a slave pulley (205) is mounted at the lower end of the second driven sprocket (203), a slider is mounted on the C-shaped grinding frame (506), a fixed wheel (206) is fixedly connected to the slider, and the slave pulley (205) and the fixed wheel (206) are connected through a rope.

5. The automatic inner and outer grinding machine for the outer ring of a bearing according to claim 4, characterized in that: The grinding shell (501) is provided with a slide groove (12) for use with a slider, a movable column (13) is installed on one side of the C-shaped grinding frame (506), and the movable column (13) passes through the grinding shell (501), and a return spring (14) is installed on the outer side of the movable column (13) and between the grinding shell (501) and the C-shaped grinding frame (506).

6. The automatic inner and outer grinding machine for the outer ring of a bearing according to claim 2, characterized in that: The fixture (7) comprises a base (701) installed in the machine tool body (1) and a first piston cylinder (702) evenly arranged on the base (701); a groove (703) and a chamber (704) connected to the first piston cylinder (702) are provided on the inner side of the upper end of the base (701); a first piston (705) is installed in the first piston cylinder (702); a support column (706) is installed on the first piston (705) to abut against the outer ring (11) of the bearing; a movable annular piston (707) is installed in the groove (703) ), a plurality of groups of second fixing plates (708) are installed on the outer side of the bracket (6), a guide column (709) is installed at the lower end of the second fixing plate (708), a limiting ring (710) is installed at the lower end of the guide column (709), and the limiting ring (710) can extend into the groove (703), a first rolling wheel (711) is installed at the lower end of the limiting ring (710) to abut against the annular piston (707), and a second rolling wheel (712) is installed at the lower end of the second fixing plate (708) to abut against the upper end of the bearing outer ring (11).

7. The automatic inner and outer grinding machine for the outer ring of a bearing according to claim 6, characterized in that: The auxiliary clamping device (8) comprises a movable shaft (801), a third piston (802) outside the movable shaft (801) and an adjusting cylinder (803); a sealed chamber (804) is provided in the adjusting cylinder (803) for cooperating with the movement of the third piston (802); the movable shaft (801) passes through the adjusting cylinder (803) and can move on the adjusting cylinder (803); the active chain (403) is disconnected in the middle and its two ends are respectively connected to the two ends of the movable shaft (801); the adjusting cylinder (803) and the connecting column (401) are connected to each other. A connecting block (805) is installed between the connecting column (401), a movable groove (806) is provided on the inner side of the lower end of the connecting column (401), a connecting groove (807) is provided in the connecting block (805), and the connecting groove (807) connects the movable groove (806) and the sealing cavity (804), a fourth piston (808) is installed in the movable groove (806) and below the connecting groove (807), a movable block (809) is installed at the lower end of the fourth piston (808), and a ball (810) is movably connected to the lower end of the movable block (809).

8. The automatic inner and outer grinding machine for the outer ring of a bearing according to claim 7, characterized in that: A second piston cylinder (811) and a fifth piston (812) in the second piston cylinder (811) are installed at the center of the base (701); a limit block (813) is installed on the fifth piston (812); a movable groove (814) for cooperating with the ball (810) is provided at the upper end of the limit block (813); and the bottom of the lower end of the second piston cylinder (811) is connected to the first piston cylinder (702) through a pipeline.

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