A crankshaft grinding machine bearing grinding device

Abstract

This invention relates to a crankshaft grinding machine bearing grinding device, belonging to the technical field of automobile engine crankshaft processing equipment. It includes: a tailstock, a clamping mechanism, a grinding rod, a headstock center, a reducer, a motor, an electrical control mechanism, multiple connecting parts, and a base plate. The tailstock, the clamping mechanism, and the reducer are all mounted on the base plate. The motor is connected to the reducer. Both ends of the headstock center are connected to the output end of the reducer and one end of the grinding rod via the connecting parts. The tailstock is connected to the end of the grinding rod furthest from the headstock center. The crankshaft grinding machine bearing is detachably mounted on the clamping mechanism and abuts against the circumferential surface of the grinding rod under the downward pressure of the clamping mechanism. This invention facilitates automated grinding of crankshaft grinding machine bearings, resulting in high-quality grinding, high efficiency, low operator workload, and strong practicality, making it suitable for widespread use in mass industrial production.

Description

Technical Field

[0001] This invention relates to the field of automobile engine crankshaft processing equipment technology, and in particular to a crankshaft grinding machine bearing grinding device. Background Technology

[0002] High-precision crankshaft grinding machines rely primarily on the precision and fit of the spindle and bearings themselves. The gap between them is approximately 0.3-0.5mm, which is prevented by a lubricating oil film to avoid dry friction and bearing burnout. The spindle, driven by a motor, rotates at high speed, constantly rubbing against the crankshaft grinding machine bearings. Because the surface hardness of the crankshaft grinding machine bearings is lower than that of the spindle, they continuously wear down, increasing the gap between them and the spindle, and consequently increasing spindle runout and worsening the hydrodynamic effect. When spindle runout affects the roundness, runout, and surface roughness of the machined crankshaft, new crankshaft grinding machine bearings must be replaced. These new bearings require repair until they are perfectly matched to the spindle before use. The common repair method is scraping, and the specific operation method is as follows:

[0003] Place the crankshaft grinding machine spindle on a V-block. Apply red lead powder to the crankshaft grinding machine bearing shell. Hold the bearing shell firmly against the spindle with both hands and move it back and forth repeatedly until red dots appear on the surface of the bearing shell (points not in contact with the spindle). Then scrape off the red dots with a scraper. Repeat the scraping process until the contact area between the bearing shell surface and the spindle is ≥70%. In addition, to facilitate the formation of an oil wedge, scrape the bearing shell to a depth of 0.3-0.5 mm within a 3-5 mm width on one side of the shaft screw-in direction.

[0004] After scraping, the surface of the crankshaft grinding machine bearing is pitted. In the recessed areas where the crankshaft grinding machine bearing does not contact the spindle, some pressure is released at the tip of the oil wedge, affecting the hydrodynamic effect. Furthermore, this bearing repair method requires highly skilled scraping techniques, is labor-intensive, time-consuming, and inefficient, severely impacting production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a crankshaft grinding machine bearing grinding device to solve the above-mentioned problem.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A crankshaft grinding machine bearing grinding device includes: a tailstock, a clamping mechanism, a grinding rod, a headstock tip, a reducer, a motor, an electrical control mechanism, multiple connecting parts, and a base plate; the tailstock, the clamping mechanism, and the reducer are all mounted on the base plate; the motor is connected to the reducer; both ends of the headstock tip are connected one-to-one to the output end of the reducer and one end of the grinding rod through the connecting parts; the tailstock is connected to the end of the grinding rod away from the headstock tip; the crankshaft grinding machine bearing is detachably mounted on the clamping mechanism and abuts against the circumferential surface of the grinding rod under the downward pressure of the clamping mechanism; the electrical control mechanism is connected to the motor.

[0007] The beneficial effects of this invention are: the headstock tip facilitates the transmission of motor power after speed reduction to the grinding rod, while the tailstock, in conjunction with the tailstock, abuts and fixes both ends of the grinding rod, driving the grinding rod to rotate; the clamping mechanism facilitates the contact between the crankshaft grinding machine bearing fixed on it and the circumferential surface of the grinding rod for grinding, realizing automated grinding of the crankshaft grinding machine bearing. Compared with the manual scraping in the prior art, the crankshaft grinding machine bearing has better grinding quality, higher efficiency, lower labor intensity for operators, and strong practicality, making it suitable for widespread use in mass industrial production.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the tailstock includes: a support plate, a tailstock tip, multiple bearings, a guide sleeve, a guide sleeve cover, a tip sleeve, a tip sleeve cover, a limiting block, and a push rod; the bearings are interference-fitted inside the guide sleeve, the tailstock tip is interference-fitted inside the bearing and connected to the end of the grinding rod away from the headstock tip, the guide sleeve cover is installed at the end of the guide sleeve, the guide sleeve and the guide sleeve cover are clearance-fitted inside the tip sleeve, the tip sleeve cover is installed at the end of the tip sleeve, the limiting block is installed at the end of the tip sleeve cover away from the tip sleeve, the push rod passes through the limiting block and the tip sleeve cover and is threadedly connected to the guide sleeve cover, the tip sleeve is installed on the support plate, and the support plate is installed on the base plate.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the interference fit assembly of the tailstock center, bearing and guide sleeve helps to make it a whole, and the clearance fit installation with the center sleeve helps to tighten and loosen the end of the grinding rod under the pushing and pulling action of the push rod, thereby adapting to grinding rods of different specifications. After the push rod passes through the limiting block and the center sleeve cover, it is threaded to the guide sleeve cover, which helps to push and pull the guide sleeve cover and the tailstock center, bearing and guide sleeve that are integrated with the guide sleeve cover by rotating the push rod.

[0011] Furthermore, a circular groove is provided at one end of the guide sleeve cover that is connected to the guide sleeve, and the rightmost bearing is fitted into the circular groove. A threaded hole is provided in the middle of the end of the guide sleeve cover that is away from the guide sleeve, and the push rod is threadedly connected to the threaded hole.

[0012] The advantages of adopting the above-mentioned further solution are: the circular groove is conducive to the assembly and fixation of the bearing, and the threaded connection between the push rod and the threaded hole is conducive to the push and pull of the guide sleeve cover, the tailstock tip that is integrated with the guide sleeve cover, the bearing and the guide sleeve by rotating the push rod.

[0013] Furthermore, the tailstock tip includes a fixing rod and a tail top block. The fixing rod is interference-fitted into the bearing, and the tail top block is a conical block structure. The tail top block abuts against the center of the end of the grinding rod away from the headstock tip.

[0014] The advantages of adopting the above-mentioned further solution are: the fixing rod is conducive to forming an integral whole with the bearing, guide sleeve and guide sleeve cover, and the tail top block is conducive to abutting and fixing the end of the grinding rod.

[0015] Furthermore, a limiting groove is provided at the top of the limiting block, and a sliding block is provided in the limiting groove. The top rod passes through the limiting groove and the sliding block.

[0016] The beneficial effect of adopting the above-mentioned further solution is that when the sliding block is pulled by the top rod to move in the limiting groove, the inner walls on both sides of the limiting groove abut against the sliding block, which helps to provide force support for the push-pull tailstock tip, bearing, guide sleeve and guide sleeve cover as a whole.

[0017] Furthermore, the clamping mechanism includes: a fixed seat, a T-bolt, a support rod, two U-shaped hinge supports, two cylindrical pins, an operating rod, a connector, a universal ball joint, and a bearing fixing block; the fixed seat is mounted on the base plate, the T-bolt is slidably mounted on the fixed seat and threadedly connected to the bottom end of the support rod, the two U-shaped hinge supports are correspondingly disposed at the end and side wall of the operating rod, and are hinged to the operating rod by the two cylindrical pins, the ends of the two U-shaped hinge supports away from the operating rod are threadedly connected to the top end of the support rod and the connector, and the top and bottom ends of the universal ball joint are connected to the connector and the bearing fixing block.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the hinge connection between the operating lever and the U-shaped hinge support facilitates the lowering and raising of the bearing fixing block and the crankshaft grinding machine bearing installed on the bearing fixing block in a vertical state, thereby realizing the contact and separation between the crankshaft grinding machine bearing and the grinding rod, and then realizing the grinding of the crankshaft grinding machine bearing under the rotation of the grinding rod.

[0019] Furthermore, the fixing base is a block structure with a strip-shaped groove at the top, and the T-bolt is slidably fitted into the strip-shaped groove.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the T-bolt can be slidably fitted into the strip groove, which is beneficial to move the crankshaft grinding machine bearing to contact and grind different circumferential surfaces of the grinding rod after a certain circumferential surface in the axial direction of the grinding rod is worn.

[0021] Furthermore, an operating handle is provided at the end of the operating lever away from the U-shaped hinge support.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the operating handle makes it easier for the operator to hold the operating lever and adjust the vertical position of the crankshaft grinding machine bearing.

[0023] Furthermore, the bearing fixing block is a block structure with an arc-shaped groove at the bottom end, and a locking bolt is provided on the side wall of the bearing fixing block. The crankshaft grinding machine bearing is adapted to be installed in the arc-shaped groove, and the locking bolt abuts against the side wall of the crankshaft grinding machine bearing.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the locking bolt helps to fix the crankshaft grinding machine bearing that is adapted to be set in the arc-shaped groove.

[0025] Furthermore, the headstock tip includes: a connecting rod, a connecting plate, and a tip block. The connecting rod and the tip block are respectively disposed at both ends of the connecting plate. The tip block is a conical block structure that abuts against the end of the grinding rod. Connecting grooves are provided on the side walls of the connecting rod and the side walls of the connecting plate. The connector is adapted to be installed in the connecting groove and is adapted to be connected to the groove at the output end of the reducer and the groove at the end of the grinding rod.

[0026] The beneficial effects of adopting the above-mentioned further solution are: the groove at the output end of the reducer, the groove at the end of the grinding rod, the connecting groove on the side wall of the connecting rod, and the connecting groove on the side wall of the connecting plate facilitate the connection between the grinding rod and the reducer, thereby transmitting the power output by the motor to the grinding rod through the reducer and the headstock tip, driving the grinding rod to rotate and grind the crankshaft grinding machine bearing. Attached Figure Description

[0027] Figure 1 This is a front view of the overall structure provided in an embodiment of the present invention;

[0028] Figure 2 A top view of the overall structure provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the headstock tip structure provided in an embodiment of the present invention;

[0030] Figure 4 A cross-sectional view of the tailstock provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the pressing mechanism provided in an embodiment of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Tailstock; 2. Clamping mechanism; 3. Grinding rod; 4. Headstock center; 5. Reducer; 6. Motor; 7. Electrical control mechanism; 8. Connecting parts; 9. Base plate; 10. Crankshaft grinding machine bearing; 11. Support plate; 12. Tailstock center; 13. Bearing; 14. Guide sleeve; 15. Guide sleeve cover; 16. Center sleeve; 17. Center sleeve cover; 18. Limiting block; 19. Push rod; 21. Fixed seat; 22. T 23. U-shaped bolt; 24. Support rod; 25. U-shaped hinge support; 26. Cylindrical pin; 27. Operating rod; 28. Joint; 29. ​​Universal ball joint; 20. Bearing fixing block; 41. Connecting rod; 42. Connecting plate; 43. Center block; 44. Connecting groove; 121. Fixing rod; 122. Tail top block; 181. Limiting groove; 182. Sliding block; 261. Operating handle; 291. Locking bolt. Detailed Implementation

[0034] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] like Figure 1 and Figure 2 As shown, a crankshaft grinding machine bearing grinding device includes: a tailstock 1, a clamping mechanism 2, a grinding rod 3, a headstock tip 4, a reducer 5, a motor 6, an electrical control mechanism 7, multiple connecting parts 8, and a base plate 9. The tailstock 1, the clamping mechanism 2, and the reducer 5 are all mounted on the base plate 9. The motor 6 is connected to the reducer 5. The two ends of the headstock tip 4 are connected one-to-one to the output end of the reducer 5 and one end of the grinding rod 3 through the connecting parts 8. The tailstock 1 is connected to the end of the grinding rod 3 away from the headstock tip 4. The crankshaft grinding machine bearing 10 is detachably mounted on the clamping mechanism 2 and abuts against the circumferential surface of the grinding rod 3 under the downward pressure of the clamping mechanism 2. The electrical control mechanism 7 is connected to the motor 6.

[0036] It should be noted that in the technical solution of the present invention, the electrical control mechanism 7 includes: an electrical cabinet, a forward and reverse relay, a timer, a rotary switch and a capacitor, which can realize the forward and reverse control of the motor 6 and the setting of the mid-course switching time;

[0037] The diameter of the grinding rod 3 is 0.02-0.06 mm larger than that of the spindle, thereby compensating for the gap between the spindle and the crankshaft grinding machine bearing 10. The surface roughness of the grinding rod 3 is 0.2-0.4 μm, and the surface hardness is required to be above 55 HRC.

[0038] The beneficial effects of this invention are: the headstock tip facilitates the transmission of motor power after speed reduction to the grinding rod, while the tailstock, in conjunction with the tailstock, abuts and fixes both ends of the grinding rod, driving the grinding rod to rotate; the clamping mechanism facilitates the contact between the crankshaft grinding machine bearing fixed on it and the circumferential surface of the grinding rod for grinding, realizing automated grinding of the crankshaft grinding machine bearing. Compared with the manual scraping in the prior art, the crankshaft grinding machine bearing has better grinding quality, higher efficiency, lower labor intensity for operators, and strong practicality, making it suitable for widespread use in mass industrial production.

[0039] Preferred, such as Figure 4 As shown, the tailstock 1 includes: a support plate 11, a tailstock tip 12, multiple bearings 13, a guide sleeve 14, a guide sleeve cover 15, a tip sleeve 16, a tip sleeve cover 17, a limiting block 18, and a push rod 19; the bearings 13 are interference-fitted inside the guide sleeve 14, the tailstock tip 12 is interference-fitted inside the bearing 13 and connected to the end of the grinding rod 3 away from the headstock tip 4, the guide sleeve cover 15 is installed at the end of the guide sleeve 14, the guide sleeve 14 and the guide sleeve cover 15 are clearance-fitted inside the tip sleeve 16, the tip sleeve cover 17 is installed at the end of the tip sleeve 16, the limiting block 18 is installed at the end of the tip sleeve cover 17 away from the tip sleeve 16, the push rod 19 passes through the limiting block 18 and the tip sleeve cover 17 and is threadedly connected to the guide sleeve cover 15, the tip sleeve 16 is installed on the support plate 11, and the support plate 11 is installed on the base plate 9.

[0040] It should be noted that, in a preferred embodiment of the present invention, the plurality of bearings 13 include a planar thrust ball bearing and at least one deep groove ball bearing, and the planar thrust ball bearing is disposed inside the guide sleeve 14 near one end of the guide sleeve cover 15.

[0041] The advantages of adopting the above-mentioned preferred scheme are: the interference fit assembly of the tailstock tip, bearing and guide sleeve helps to make it a whole, and the clearance fit installation with the tip sleeve helps to tighten and loosen the end of the grinding rod under the pushing and pulling action of the push rod, thereby adapting to grinding rods of different specifications. After the push rod passes through the limiting block and the tip sleeve cover, it is threadedly connected to the guide sleeve cover, which helps to push and pull the guide sleeve cover and the tailstock tip, bearing and guide sleeve that are integrated with the guide sleeve cover by rotating the push rod.

[0042] Preferred, such as Figure 4As shown, the guide sleeve cover 15 is provided with a circular groove at one end connected to the guide sleeve 14, and the rightmost bearing 13 is adapted to be installed in the circular groove. The guide sleeve cover 15 is provided with a threaded hole in the middle of the end away from the guide sleeve 14, and the top rod 19 is threadedly connected to the threaded hole.

[0043] It should be noted that, in a preferred embodiment of the present invention, the planar thrust ball bearing is adapted to be installed in the circular groove; the threaded hole is a through hole or a blind hole.

[0044] The advantages of adopting the above preferred solution are: the circular groove is conducive to the assembly and fixation of the bearing, and the threaded connection between the push rod and the threaded hole is conducive to the push and pull of the guide sleeve cover, the tailstock tip that is integrated with the guide sleeve cover, the bearing and the guide sleeve by rotating the push rod.

[0045] Preferred, such as Figure 4 As shown, the tailstock tip 12 includes a fixing rod 121 and a tail top block 122. The fixing rod 121 is interference-fitted into the bearing 13. The tail top block 122 is a conical block structure. The tail top block 122 abuts against the center of the end of the grinding rod 3 away from the headstock tip 4.

[0046] The advantages of adopting the above preferred solution are: the fixing rod is conducive to forming an integral whole with the bearing, guide sleeve and guide sleeve cover, and the tail block is conducive to abutting and fixing the end of the grinding rod.

[0047] Preferred, such as Figure 4 As shown, the top of the limiting block 18 is provided with a limiting groove 181, and a sliding block 182 is provided in the limiting groove 181. The top rod 19 passes through the limiting groove 181 and the sliding block 182.

[0048] The beneficial effects of adopting the above preferred solution are: when the sliding block is pulled by the top rod to move in the limiting groove, the inner walls on both sides of the limiting groove abut against the sliding block, which helps to provide force support for the push-pull tailstock tip, bearing, guide sleeve and guide sleeve cover as a whole.

[0049] Preferred, such as Figure 5As shown, the clamping mechanism 2 includes: a fixed base 21, a T-bolt 22, a support rod 23, two U-shaped hinge supports 24, two cylindrical pins 25, an operating rod 26, a connector 27, a universal ball joint 28, and a bearing fixing block 29. The fixed base 21 is mounted on the base plate 9. The T-bolt 22 is slidably mounted on the fixed base 21 and threadedly connected to the bottom end of the support rod 23. The two U-shaped hinge supports 24 are correspondingly arranged at the end and side wall of the operating rod 26, and are hinged to the operating rod 26 through the two cylindrical pins 25. The ends of the two U-shaped hinge supports 24 away from the operating rod 26 are threadedly connected to the top end of the support rod 23 and the connector 27. The top and bottom ends of the universal ball joint 28 are connected to the connector 27 and the bearing fixing block 29.

[0050] It should be noted that, in the technical solution of the present invention, the fixing between the fixed base 21 and the T-bolt 22, the fixing between the T-bolt 22 and the support rod 23, the fixing between the support rod 23 and the U-shaped hinge support 24, the fixing between the U-shaped hinge support 24 and the joint 27, and the fixing between the joint 27 and the universal ball joint 28 are all achieved by nuts.

[0051] The advantages of adopting the above-mentioned preferred solution are: the hinged connection between the operating lever and the U-shaped hinge support facilitates the lowering and raising of the bearing fixing block and the crankshaft grinding machine bearing installed on the bearing fixing block in a vertical state, thereby realizing the contact and separation between the crankshaft grinding machine bearing and the grinding rod, and then realizing the grinding of the crankshaft grinding machine bearing under the rotation of the grinding rod.

[0052] Preferred, such as Figure 2 and Figure 5 As shown, the fixing base 21 is a block structure with a strip-shaped groove at the top, and the T-bolt 22 is slidably fitted into the strip-shaped groove.

[0053] The advantages of adopting the above preferred solution are: the T-bolt can be slidably fitted into the strip groove, which is beneficial to move the crankshaft grinding machine bearing to contact and grind different circumferential surfaces of the grinding rod after a certain circumferential surface in the axial direction of the grinding rod is worn.

[0054] Preferred, such as Figure 2 and Figure 5 As shown, the end of the operating lever 26 away from the U-shaped hinge support 24 is provided with an operating handle 261.

[0055] The advantages of adopting the above preferred solution are: the operating handle makes it easier for the operator to hold the operating lever and adjust the vertical position of the crankshaft grinding machine bearing.

[0056] Preferred, such as Figure 5 As shown, the bearing fixing block 29 is a block structure with an arc-shaped groove at the bottom end. A locking bolt 291 is provided on the side wall of the bearing fixing block 29. The crankshaft grinding machine bearing 10 is adapted to be disposed in the arc-shaped groove, and the locking bolt 291 abuts against the side wall of the crankshaft grinding machine bearing 10.

[0057] The advantage of adopting the above preferred solution is that the locking bolt helps to fix the crankshaft grinding machine bearing that is adapted to be set in the arc-shaped groove.

[0058] Preferred, such as Figure 2 and Figure 3 As shown, the headstock tip 4 includes: a connecting rod 41, a connecting plate 42, and a tip block 43. The connecting rod 41 and the tip block 43 are respectively disposed at both ends of the connecting plate 42. The tip block 43 is a conical block structure that abuts against the end of the grinding rod 3. The side wall of the connecting rod 41 and the side wall of the connecting plate 42 are provided with connecting grooves 44. The connector 8 is adapted to be installed in the connecting grooves 44 and is adapted to be connected to the groove at the output end of the reducer 5 and the groove at the end of the grinding rod 3.

[0059] It should be noted that, in a preferred embodiment of the present invention, the connector 8 is a flat key.

[0060] The advantages of adopting the above-mentioned preferred solution are: the groove at the output end of the reducer, the groove at the end of the grinding rod, the connecting groove on the side wall of the connecting rod, and the connecting groove on the side wall of the connecting plate facilitate the connection between the grinding rod and the reducer, thereby transmitting the power output by the motor to the grinding rod through the reducer and the headstock tip, driving the grinding rod to rotate and grind the crankshaft grinding machine bearing.

[0061] The working process of the present invention will be described below through an embodiment:

[0062] like Figures 1 to 5 As shown, the grinding process of crankshaft bearing 10 is divided into rough grinding, semi-grinding, fine grinding and polishing.

[0063] First, select a suitable grinding rod 3 according to the specifications of the crankshaft grinding machine bearing 10 to be ground, install the crankshaft grinding machine bearing 10 into the arc-shaped groove of the bearing fixing block 29, and tighten the locking bolt 291 to fix the crankshaft grinding machine bearing 10.

[0064] In the rough grinding process, a layer of grinding paste with a roughness of 10-14 is applied to the surface of the crankshaft grinding machine bearing 10 near the grinding rod 3; the power is turned on, and the forward rotation time, switching time, and reverse rotation time are set on the timer; the rotary switch is turned to the start position; the motor 6 starts and drives the grinding rod 3 to rotate through the reducer 5; the operating lever 26 is manually rotated clockwise to move the crankshaft grinding machine bearing 10 downward until the crankshaft grinding machine bearing 10 is placed on the grinding rod 3. The grinding rod 3 repeatedly rotates forward, stops, and reverses, constantly generating friction with the crankshaft grinding machine bearing 10. During operation, the operating lever 26 can also be manually rotated counterclockwise to lift the crankshaft grinding machine bearing 10 at any time to observe the grinding situation. After about 5 minutes of grinding, the rotary switch is turned to the stop position, the motor 6 stops, and the grinding rod 3 also stops rotating, completing the rough grinding process.

[0065] In the subsequent semi-grinding, fine grinding, and polishing processes, it is only necessary to apply grinding paste of different roughness to the surface of the crankshaft grinding machine bearing 10 near the grinding rod 3 (such as applying grinding paste with a roughness of 7 in the semi-grinding process, and applying grinding paste with a roughness of 5 in the fine grinding and polishing processes). Different forward rotation time, conversion time, and reverse rotation time are set on the timer to change the grinding time, thereby realizing the semi-grinding, fine grinding, and polishing processes in sequence.

[0066] Finally, rotate the operating lever 26 clockwise to raise the crankshaft grinding machine bearing 10, loosen the locking bolt 291, and remove the crankshaft grinding machine bearing 10 from the arc-shaped groove of the bearing fixing block 29, thus completing the grinding of one crankshaft grinding machine bearing 10.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A crankshaft grinding machine bearing grinding device, characterized in that, include: Tailstock (1), clamping mechanism (2), grinding rod (3), headstock tip (4), reducer (5), motor (6), electrical control mechanism (7), multiple connecting parts (8) and base plate (9); The tailstock (1), the clamping mechanism (2) and the reducer (5) are all mounted on the base plate (9). The motor (6) is connected to the reducer (5). The two ends of the headstock tip (4) are connected to the output end of the reducer (5) and one end of the grinding rod (3) through the connector (8). The tailstock (1) is connected to the end of the grinding rod (3) away from the headstock tip (4). The crankshaft grinding machine bearing (10) is detachably mounted on the clamping mechanism (2) and abuts against the circumferential surface of the grinding rod (3) under the downward pressure of the clamping mechanism (2). The electrical control mechanism (7) is connected to the motor (6). The tailstock (1) includes: a support plate (11), a tailstock tip (12), multiple bearings (13), a guide sleeve (14), a guide sleeve cover (15), a tip sleeve (16), a tip sleeve cover (17), a limiting block (18), and a push rod (19). The bearing (13) is interference-fitted inside the guide sleeve (14), the tailstock tip (12) is interference-fitted inside the bearing (13) and connected to the end of the grinding rod (3) away from the headstock tip (4), the guide sleeve cover (15) is installed at the end of the guide sleeve (14), the guide sleeve (14) and the guide sleeve cover (15) are clearance-fitted inside the tip sleeve (16), the tip sleeve cover (17) is installed at the end of the tip sleeve (16), the limiting block (18) is installed at the end of the tip sleeve cover (17) away from the tip sleeve (16), the push rod (19) passes through the limiting block (18) and the tip sleeve cover (17) and is threadedly connected to the guide sleeve cover (15), the tip sleeve (16) is installed on the support plate (11), and the support plate (11) is installed on the base plate (9); The top of the limiting block (18) is provided with a limiting groove (181), and a sliding block (182) is provided in the limiting groove (181). The top rod (19) passes through the limiting groove (181) and the sliding block (182). The clamping mechanism (2) includes: a fixed seat (21), a T-bolt (22), a support rod (23), two U-shaped hinge supports (24), two cylindrical pins (25), an operating rod (26), a connector (27), a universal ball joint (28), and a bearing fixing block (29). The fixed seat (21) is installed on the base plate (9). The T-bolt (22) is slidably installed on the fixed seat (21) and threadedly connected to the bottom end of the support rod (23). The two U-shaped hinge supports (24) are respectively set at the end and side wall of the operating rod (26) and are hinged to the operating rod (26) respectively through the two cylindrical pins (25). The ends of the two U-shaped hinge supports (24) away from the operating rod (26) are threadedly connected to the top end of the support rod (23) and the joint (27) respectively. The top and bottom ends of the universal ball joint (28) are respectively connected to the joint (27) and the bearing fixing block (29).

2. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, The guide sleeve cover (15) is connected to the guide sleeve (14) at one end with a circular groove. The rightmost bearing (13) is fitted into the circular groove. The guide sleeve cover (15) is provided with a threaded hole at the middle of the end away from the guide sleeve (14). The top rod (19) is threadedly connected to the threaded hole.

3. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, The tailstock tip (12) includes a fixing rod (121) and a tail top block (122). The fixing rod (121) is interference-fitted into the bearing (13). The tail top block (122) is a conical block structure. The tail top block (122) abuts against the center of the end of the grinding rod (3) away from the headstock tip (4).

4. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, The fixing seat (21) is a block structure with a strip groove at the top, and the T-bolt (22) is slidably fitted into the strip groove.

5. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, An operating handle (261) is provided at the end of the operating lever (26) away from the U-shaped hinge support (24).

6. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, The bearing fixing block (29) is a block structure with an arc-shaped groove at the bottom. A locking bolt (291) is provided on the side wall of the bearing fixing block (29). The crankshaft grinding machine bearing (10) is adapted to be installed in the arc-shaped groove. The locking bolt (291) abuts against the side wall of the crankshaft grinding machine bearing (10).

7. The crankshaft grinding machine bearing grinding device according to claim 1, characterized in that, The headstock tip (4) includes: a connecting rod (41), a connecting plate (42), and a tip block (43). The connecting rod (41) and the tip block (43) are respectively arranged at both ends of the connecting plate (42). The tip block (43) is a conical block structure that abuts against the end of the grinding rod (3). The side wall of the connecting rod (41) and the side wall of the connecting plate (42) are provided with connecting grooves (44). The connector (8) is adapted to be installed in the connecting groove (44) and adapted to be connected with the groove at the output end of the reducer (5) and the groove at the end of the grinding rod (3).

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