Bearing bush grinding device of crankshaft grinding machine

Abstract

The invention relates to a bearing bush grinding device of a crankshaft grinding machine, and belongs to the technical field of automobile engine crankshaft machining equipment. Comprising a tailstock, a pressing mechanism, a grinding rod, a headstock tip, a speed reducer, a motor, an electric control mechanism, a plurality of connecting pieces and a bottom plate, the tailstock, the pressing mechanism and the speed reducer are all installed on the bottom plate, the motor is connected with the speed reducer, and the two ends of the headstock center are connected with the output end of the speed reducer and one end of the grinding rod in a one-to-one correspondence mode through the connecting pieces. The tailstock is connected with the end, away from the headstock tip, of the grinding rod, and a crankshaft grinding machine bearing bush is detachably installed on the pressing mechanism and abuts against the circumferential face of the grinding rod under the downward pressing effect of the pressing mechanism. The crankshaft grinding machine bearing bush grinding device is beneficial to automatic grinding of crankshaft grinding machine bearing bushes, good in crankshaft grinding machine bearing bush grinding quality, high in efficiency, low in labor intensity of operators, high in practicability and suitable for being used and popularized in large-scale industrial production.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine crankshaft processing equipment, in particular to a crankshaft grinder bearing bush grinding device. Background Art

[0002] High-precision crankshaft grinders mainly rely on the accuracy and fit of the spindle and the bearing itself. The gap between the two is about 0.3-0.5mm. The lubricating oil produces an oil film to prevent dry friction and avoid burning the bearing. The spindle is driven by a motor and rotates at high speed, constantly producing friction with the crankshaft grinder bearing. Since the surface hardness of the crankshaft grinder bearing is lower than that of the spindle, it will continue to wear, and the gap between it and the spindle will increase accordingly. At the same time, the spindle runout also increases, and the dynamic pressure effect becomes worse. When the spindle runout affects the roundness, runout, roughness and other quality factors of the processed crankshaft, a new crankshaft grinder bearing must be replaced, and the new crankshaft grinder bearing needs to be repaired. It can only be used after it is repaired to match the spindle. The commonly used method for repairing bearings is scraping. The specific operation method is as follows:

[0003] Place the crankshaft grinder spindle on the V-shaped frame, apply red lead powder on the crankshaft grinder bearing, press the crankshaft grinder bearing against the spindle with both hands and move it back and forth repeatedly until red spots appear on the crankshaft grinder bearing surface (points not in contact with the spindle), then scrape off the red spots with a scraper, and repeatedly scrape until the crankshaft grinder bearing surface and the spindle contact area is ≥ 70%. In addition, in order to easily form an oil wedge, the crankshaft grinder bearing will be scraped 0.3-0.5mm deep within a width of about 3-5mm on one side of the shaft screwing direction.

[0004] After scraping, the surface of the crankshaft grinder bearing is concave. The concave part of the crankshaft grinder bearing that is not in contact with the main shaft will release some pressure at the tip of the oil wedge, affecting the dynamic pressure effect. In addition, this bearing repair method requires very high scraping technology, high labor intensity, long bearing repair time, low bearing repair efficiency, and seriously affects production. Summary of the invention

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

[0006] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: a crankshaft grinder bearing grinding device, comprising: a tailstock, a clamping mechanism, a grinding rod, a headstock top, a reducer, a motor, an electronic control mechanism, a plurality of 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, the two ends of the headstock top are connected one-to-one with the output end of the reducer and one end of the grinding rod through the connecting member, the tailstock is connected to the end of the grinding rod away from the headstock top, the crankshaft grinder 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, and the electronic control mechanism is connected to the motor.

[0007] The beneficial effects of the present invention are: the top of the headstock is conducive to transmitting the motor power after the speed change of the reducer to the grinding rod, and at the same time cooperates with the tailstock to abut and fix the two ends of the grinding rod, driving the grinding rod to rotate, and the clamping mechanism is conducive to abutting and grinding the crankshaft grinder bearing fixed thereon with the circumferential surface of the grinding rod, thereby realizing the automated grinding of the crankshaft grinder bearing. Compared with the manual scraping in the prior art, the crankshaft grinder bearing grinding quality is good, the efficiency is high, the labor intensity of the operator is low, the practicability is strong, and it is suitable for promotion and use in large-scale industrial production.

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

[0009] Further, the tailstock includes: a supporting plate, a tailstock center, multiple bearings, a guide sleeve, a guide sleeve cover, a center sleeve, a center sleeve cover, a limit block and a push rod; the bearing is installed in the guide sleeve with an interference fit, the tailstock center is installed in the bearing with an interference fit, and is connected to the end of the grinding rod away from the headstock center, the guide sleeve cover is installed at the end of the guide sleeve, the guide sleeve and the guide sleeve cover are installed in the center sleeve with a clearance fit, the center sleeve cover is installed at the end of the center sleeve, the limit block is installed at the end of the center sleeve cover away from the center sleeve, the push rod passes through the limit block and the center sleeve cover, and is threadedly connected to the guide sleeve cover, the center sleeve is installed on the supporting plate, and the supporting plate is installed on the base plate.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that the interference fit assembly of the tailstock center, bearing and guide sleeve is conducive to making them a whole, and the clearance fit installation with the center sleeve is conducive to tightening and loosening the end of the grinding rod under the push-pull action of the push rod, so as to adapt to grinding rods of different specifications. The push rod passes through the limit block and the center sleeve cover and is threadedly connected with the guide sleeve cover, which is conducive to pushing and pulling the guide sleeve cover and the tailstock center, bearing and guide sleeve formed as a whole 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 connected to the guide sleeve, the rightmost bearing is adapted to be installed in the circular groove, a threaded hole is provided in the middle of one end of the guide sleeve cover away from the guide sleeve, and the push rod is threadedly connected to the threaded hole.

[0012] The beneficial effect of adopting the above further scheme is that 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 pushing and pulling the guide sleeve cover and the tailstock center, bearing and guide sleeve formed integrally with the guide sleeve cover by rotating the push rod.

[0013] Furthermore, the tailstock top includes a fixed rod and a tail top block, the fixed rod is installed in the bearing with an interference fit, the tail top block is a conical block structure, and the tail top block abuts against the center of one end of the grinding rod away from the headstock top.

[0014] The beneficial effect of adopting the above further solution is that the fixing rod is conducive to forming a whole with the bearing, the guide sleeve and the 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 arranged at the top end of the limiting block, a sliding block is arranged in the limiting groove, and the push rod passes through the limiting groove and the sliding block.

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

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

[0018] The beneficial effect of adopting the above-mentioned further scheme is that the hinged connection between the operating rod and the U-shaped hinge support is conducive to lowering and lifting the bearing fixing block and the crankshaft grinder bearing installed on the bearing fixing block in a vertical state, thereby realizing the abutment and separation between the crankshaft grinder bearing and the grinding rod, and then realizing the grinding of the crankshaft grinder bearing under the rotation of the grinding rod.

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

[0020] The beneficial effect of adopting the above further scheme is that the T-bolt can be slidably fitted in the strip groove, which is conducive to moving the crankshaft grinder bearing to contact and grind with a different axial surface of the grinding rod after a certain axial surface of the grinding rod is worn.

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

[0022] The beneficial effect of adopting the above further solution is that the operating handle is conducive to the operator holding the operating lever and adjusting the upper and lower positions of the crankshaft grinder 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 grinder bearing is adapted to be arranged in the arc-shaped groove, and the locking bolt abuts against the side wall of the crankshaft grinder bearing.

[0024] The beneficial effect of adopting the above further solution is that the locking bolt is conducive to fixing the crankshaft grinder bearing shell adapted to be arranged in the arc-shaped groove.

[0025] Furthermore, the top of the headstock includes: a connecting rod, a connecting plate and a top block, the connecting rod and the top block are arranged one by one at the two ends of the connecting plate, the top block is a conical block structure abutting against the end of the grinding rod, and the side walls of the connecting rod and the side walls of the connecting plate are provided with connecting grooves, the connecting piece is adapted to be installed in the connecting groove, and is adapted to be connected with the groove at the output end of the reducer and the groove at the end of the grinding rod.

[0026] The beneficial effect of adopting the above-mentioned further scheme is that the connecting piece cooperates with 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, which is conducive to realizing 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 top of the headstock, driving the grinding rod to rotate to grind the crankshaft grinder bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front view of the overall structure provided by an embodiment of the present invention;

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

[0029] Figure 3 A schematic diagram of the structure of the headstock top provided by an embodiment of the present invention;

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

[0031] Figure 5 A schematic structural diagram of a clamping mechanism provided in an embodiment of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Tailstock; 2. Clamping mechanism; 3. Grinding rod; 4. Headstock center; 5. Reducer; 6. Motor; 7. Electronic control mechanism; 8. Connector; 9. Bottom plate; 10. Crankshaft grinder bearing; 11. Support plate; 12. Tailstock center; 13. Bearing; 14. Guide sleeve; 15. Guide sleeve cover; 16. Center sleeve; 17. Center sleeve cover; 18. Limit block; 19. Ejector; 21. Fixed seat; 22. T shaped bolt; 23, supporting rod; 24, U-shaped hinge support; 25, cylindrical pin; 26, operating rod; 27, joint; 28, universal ball joint; 29, bearing fixing block; 41, connecting rod; 42, connecting plate; 43, top block; 44, connecting groove; 121, fixing rod; 122, tail top block; 181, limiting groove; 182, sliding block; 261, operating handle; 291, locking bolt. DETAILED DESCRIPTION

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

[0035] like Figure 1 and Figure 2 As shown, a crankshaft grinder bearing grinding device comprises: a tailstock 1, a clamping mechanism 2, a grinding rod 3, a headstock top 4, a reducer 5, a motor 6, an electronic control mechanism 7, a plurality of connecting members 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 top 4 are connected one-to-one with the output end of the reducer 5 and one end of the grinding rod 3 through the connecting member 8, the tailstock 1 is connected to the end of the grinding rod 3 away from the headstock top 4, the crankshaft grinder 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, and the electronic control mechanism 7 is connected to the motor 6.

[0036] It should be noted that: in the technical solution of the present invention, the electric control mechanism 7 includes: an electric 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 midway conversion time;

[0037] The diameter of the grinding rod 3 is 0.02-0.06 mm larger than the diameter of the main shaft, so as to compensate for the gap between the main shaft and the crankshaft grinder 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 the present invention are: the top of the headstock is conducive to transmitting the motor power after the speed change of the reducer to the grinding rod, and at the same time cooperates with the tailstock to abut and fix the two ends of the grinding rod, driving the grinding rod to rotate, and the clamping mechanism is conducive to abutting and grinding the crankshaft grinder bearing fixed thereon with the circumferential surface of the grinding rod, thereby realizing the automated grinding of the crankshaft grinder bearing. Compared with the manual scraping in the prior art, the crankshaft grinder bearing grinding quality is good, the efficiency is high, the labor intensity of the operator is low, the practicability is strong, and it is suitable for promotion and use in large-scale industrial production.

[0039] Preferably, Figure 4 As shown, the tailstock 1 includes: a supporting plate 11, a tailstock center 12, a plurality of bearings 13, a guide sleeve 14, a guide sleeve cover 15, a center sleeve 16, a center sleeve cover 17, a limit block 18 and a push rod 19; the bearing 13 is installed in the guide sleeve 14 by interference fit, the tailstock center 12 is installed in the bearing 13 by interference fit, and is connected to the end of the grinding rod 3 away from the headstock center 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 installed in the center sleeve 16 with clearance fit, the center sleeve cover 17 is installed at the end of the center sleeve 16, the limit block 18 is installed at the end of the center sleeve cover 17 away from the center sleeve 16, the push rod 19 passes through the limit block 18 and the center sleeve cover 17, and is threadedly connected to the guide sleeve cover 15, the center sleeve 16 is installed on the supporting plate 11, and the supporting 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 arranged inside the guide sleeve 14 near one end of the guide sleeve cover 15 .

[0041] The beneficial effects of adopting the above-mentioned preferred scheme are: the interference fit assembly of the tailstock center, bearing and guide sleeve is conducive to making them a whole, and the clearance fit installation with the center sleeve is conducive to tightening and loosening the end of the grinding rod under the push-pull action of the push rod, so as to adapt to grinding rods of different specifications. The push rod passes through the limit block and the center sleeve cover and is threadedly connected with the guide sleeve cover, which is conducive to pushing and pulling the guide sleeve cover and the tailstock center, bearing and guide sleeve formed as a whole with the guide sleeve cover by rotating the push rod.

[0042] Preferably, Figure 4As shown, a circular groove is provided at one end of the guide sleeve cover 15 connected to the guide sleeve 14, and the rightmost bearing 13 is adapted to be installed in the circular groove. A threaded hole is provided in the middle of the end of the guide sleeve cover 15 away from the guide sleeve 14, and the push 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; and the threaded hole is a through hole or a blind hole.

[0044] The beneficial effects 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 pushing and pulling the guide sleeve cover and the tailstock center, bearing and guide sleeve formed as one piece with the guide sleeve cover by rotating the push rod.

[0045] Preferably, Figure 4 As shown, the tailstock top 12 includes a fixing rod 121 and a tail top block 122. The fixing rod 121 is installed in the bearing 13 by interference fit. The tail top block 122 is a conical block structure. The tail top block 122 abuts against the center of one end of the grinding rod 3 away from the headstock top 4.

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

[0047] Preferably, Figure 4 As shown, a limiting groove 181 is provided at the top end of the limiting block 18 , a sliding block 182 is provided in the limiting groove 181 , and the push rod 19 passes through the limiting groove 181 and the sliding block 182 .

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

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

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

[0051] The beneficial effect of adopting the above-mentioned preferred scheme is that the hinged connection between the operating rod and the U-shaped hinge support is conducive to lowering and lifting the bearing fixing block and the crankshaft grinder bearing installed on the bearing fixing block in a vertical state, thereby realizing the abutment and separation between the crankshaft grinder bearing and the grinding rod, and then realizing the grinding of the crankshaft grinder bearing under the rotation of the grinding rod.

[0052] Preferably, Figure 2 and Figure 5 As shown, the fixing seat 21 is a block structure with a strip groove on the top, and the T-shaped bolt 22 is slidably fitted in the strip groove.

[0053] The beneficial effect of adopting the above preferred solution is that the T-bolt can be slidably fitted in the strip groove, which is conducive to moving the crankshaft grinder bearing to contact and grind with a different axial surface of the grinding rod after a certain axial surface of the grinding rod is worn.

[0054] Preferably, Figure 2 and Figure 5 As shown, an operating handle 261 is provided at the end of the operating rod 26 away from the U-shaped hinge support 24 .

[0055] The beneficial effect of adopting the above preferred solution is that the operating handle is conducive to the operator holding the operating lever and adjusting the upper and lower positions of the crankshaft grinder bearing.

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

[0057] The beneficial effect of adopting the above preferred solution is that the locking bolt is conducive to fixing the crankshaft grinder bearing shell adapted to be arranged in the arc-shaped groove.

[0058] Preferably, Figure 2 and Figure 3 As shown, the headstock top 4 includes: a connecting rod 41, a connecting plate 42 and a top block 43. The connecting rod 41 and the top block 43 are arranged at both ends of the connecting plate 42 in a one-to-one correspondence. The top block 43 is a conical block structure abutting against the end of the grinding rod 3. The side walls of the connecting rod 41 and the side walls of the connecting plate 42 are both provided with connecting grooves 44. The connecting piece 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.

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

[0060] The beneficial effect of adopting the above-mentioned preferred scheme is that the connecting piece cooperates with 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, which is conducive to realizing 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 top of the headstock, driving the grinding rod to rotate to grind the crankshaft grinder bearing.

[0061] The working process of the present invention is described below by an embodiment:

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

[0063] First, select a suitable grinding rod 3 according to the specifications of the crankshaft grinder bearing 10 to be ground, install the crankshaft grinder bearing 10 into the arc groove of the bearing fixing block 29, and tighten the locking bolt 291 to fix the crankshaft grinder 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 grinder bearing 10 near the grinding rod 3; turn on the power, set the forward time, conversion time and reverse time on the timer; turn the rotary switch to the start gear; start the motor 6, and drive the grinding rod 3 to rotate through the reducer 5; manually rotate the operating rod 26 clockwise to move the crankshaft grinder bearing 10 downward until the crankshaft grinder bearing 10 is placed on the grinding rod 3, and the grinding rod 3 repeatedly runs forward, stops and reverses, constantly generating friction with the crankshaft grinder bearing 10. During operation, the operating rod 26 can also be manually rotated counterclockwise to lift the crankshaft grinder bearing 10 at any time to observe the grinding situation. After about 5 minutes of grinding, the rotary switch is rotated to the stop gear, the motor 6 stops, and the grinding rod 3 also stops rotating, completing the rough grinding process.

[0065] In the subsequent semi-grinding process, fine grinding process and polishing process, it is only necessary to apply grinding pastes of different roughness on the surface of the crankshaft grinder bearing 10 close to 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 process and polishing process), and set different forward time, conversion time, and reverse time on the timer to change the grinding time, so as to realize the semi-grinding process, fine grinding process and polishing process in sequence.

[0066] Finally, the operating rod 26 is rotated clockwise to lift the crankshaft grinder bearing 10 upward, the locking bolt 291 is loosened, and the crankshaft grinder bearing 10 is removed from the arc-shaped groove of the bearing fixing block 29, thereby completing the grinding of the crankshaft grinder bearing 10.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A crankshaft grinder bearing grinding device, characterized in that: include: A tailstock (1), a clamping mechanism (2), a grinding rod (3), a headstock top (4), a reducer (5), a motor (6), an electric control mechanism (7), a plurality of 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 top (4) are connected to the output end of the reducer (5) and one end of the grinding rod (3) through the connecting piece (8) in a one-to-one manner; the tailstock (1) is connected to the end of the grinding rod (3) away from the headstock top (4); the crankshaft grinder bearing (10) is detachably mounted on the clamping mechanism (2) and abuts against the peripheral surface of the grinding rod (3) under the downward pressure of the clamping mechanism (2); and the electric control mechanism (7) is connected to the motor (6).

2. A crankshaft grinder bearing grinding device according to claim 1, characterized in that: The tailstock (1) comprises: a support plate (11), a tailstock center (12), a plurality of bearings (13), a guide sleeve (14), a guide sleeve cover (15), a center sleeve (16), a center sleeve cover (17), a limit block (18) and a push rod (19); The bearing (13) is installed in the guide sleeve (14) with an interference fit, the tailstock center (12) is installed in the bearing (13) with an interference fit, and is connected to the end of the grinding rod (3) away from the headstock center (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 installed in the center sleeve (16) with a clearance fit, the center sleeve cover (17) is installed at the end of the center sleeve (16), the limit block (18) is installed at the end of the center sleeve cover (17) away from the center sleeve (16), the push rod (19) passes through the limit block (18) and the center sleeve cover (17), and is threadedly connected to the guide sleeve cover (15), the center sleeve (16) is installed on the support plate (11), and the support plate (11) is installed on the base plate (9).

3. A crankshaft grinder bearing grinding device according to claim 2, characterized in that: A circular groove is provided at one end of the guide sleeve cover (15) connected to the guide sleeve (14), and the rightmost bearing (13) is adapted to be installed in the circular groove. A threaded hole is provided in the middle of one end of the guide sleeve cover (15) away from the guide sleeve (14), and the push rod (19) is threadedly connected to the threaded hole.

4. The bearing grinding device for a crankshaft grinder according to claim 2, characterized in that: The tailstock top (12) comprises a fixing rod (121) and a tail top block (122); the fixing rod (121) is installed in the bearing (13) by interference fit; the tail top block (122) is a conical block structure; the tail top block (122) abuts against the center of one end of the grinding rod (3) away from the headstock top (4).

5. The bearing grinding device for a crankshaft grinder according to claim 2, characterized in that: A limiting groove (181) is arranged at the top end of the limiting block (18), a sliding block (182) is arranged in the limiting groove (181), and the push rod (19) passes through the limiting groove (181) and the sliding block (182).

6. The bearing grinding device for a crankshaft grinder according to claim 1, characterized in that: The clamping mechanism (2) comprises: a fixing seat (21), a T-shaped bolt (22), a supporting rod (23), two U-shaped hinge supports (24), two cylindrical pins (25), an operating rod (26), a joint (27), a universal ball joint (28) and a bearing fixing block (29); The fixing seat (21) is mounted on the base plate (9); the T-shaped bolt (22) is slidably mounted on the fixing seat (21) and is threadedly connected to the bottom end of the supporting rod (23); the two U-shaped hinge supports (24) are arranged one-to-one at the end and side wall of the operating rod (26) and are hinged to the operating rod (26) through two cylindrical pins (25) one-to-one; 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 supporting rod (23) and the joint (27) one-to-one; the top and bottom ends of the universal ball joint (28) are connected to the joint (27) and the bearing fixing block (29) one-to-one.

7. A crankshaft grinder bearing grinding device according to claim 6, characterized in that: The fixing seat (21) is a block structure with a strip-shaped groove at the top, and the T-shaped bolt (22) is slidably fitted in the strip-shaped groove.

8. The bearing grinding device for a crankshaft grinder according to claim 6, characterized in that: An operating handle (261) is provided at the end of the operating rod (26) away from the U-shaped hinge support (24).

9. The bearing grinding device for a crankshaft grinder according to claim 6, characterized in that: The bearing bush 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 bush fixing block (29). The crankshaft grinder bearing bush (10) is adapted to be arranged in the arc-shaped groove, and the locking bolt (291) abuts against the side wall of the crankshaft grinder bearing bush (10).

10. The bearing grinding device for a crankshaft grinder according to claim 1, characterized in that: The headstock top (4) comprises: a connecting rod (41), a connecting plate (42) and a top block (43); the connecting rod (41) and the top block (43) are arranged at the two ends of the connecting plate (42) in a one-to-one correspondence; the top block (43) is a conical block structure abutting against the end of the grinding rod (3); the side walls of the connecting rod (41) and the side walls of the connecting plate (42) are both provided with connecting grooves (44); the connecting piece (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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