Efficient grinding device and method for diesel engine crankshaft

Abstract

The invention belongs to the technical field of crankshaft grinding equipment, and particularly relates to an efficient grinding device and method for a diesel engine crankshaft. Comprising a mounting seat, and the mounting seat comprises a base and side plates fixed to the two ends of the base; a limiting column is connected to the base in a sliding manner; a limiting hole is formed in the limiting column in a penetrating mode and used for being connected with the front end of a crankshaft in an inserted mode. A driving motor is fixedly mounted on one side plate, and the output end of the driving motor is fixedly connected with the compression adjusting mechanism; according to the crankshaft grinding device, rapid switching of different grinding positions of a crankshaft can be facilitated, and meanwhile, the overall grinding accuracy can be guaranteed; the crankshaft is not easy to damage; according to the crankshaft limiting device, different limiting modes can be rapidly carried out, and meanwhile temporary adjustment can still be carried out according to the size of a crankshaft after limiting is completed; according to the crankshaft grinding device, the number can be rapidly adjusted according to different grinding positions of crankshafts, and meanwhile, different grinders can be conveniently and rapidly replaced according to different crankshaft models.

Description

Technical Field

[0001] This invention belongs to the technical field of crankshaft grinding equipment, specifically relating to a high-efficiency grinding device and method for diesel engine crankshafts. Background Technology

[0002] The crankshaft is one of the key components of a diesel engine. Its main function is to convert the reciprocating motion of the piston into rotational motion, thereby driving the engine. Connected to the connecting rod, the crankshaft bears the immense pressure and torque from the piston. During machining, specific areas of the diesel engine crankshaft need to be polished smooth to ensure smooth engine operation and performance.

[0003] Chinese Patent Application No. 202510017100.3 discloses a rolling grinding machine for machining diesel engine crankshafts, comprising: a main body component including a body assembly and a fixed assembly disposed on the body assembly; and a tightening component including a rotating assembly rotatably connected within the body assembly and a rotating assembly rotatably connected to the body assembly. This invention places the grinding wheel on the fixed assembly, thereby pushing the body assembly to move relative to it. Under the action of the conversion component, the sliding force is converted into a rotational force and transmitted to the output assembly. At this time, the output assembly will slide along the trajectory of the body assembly, simultaneously driving the rotating assembly to rotate. Since the rotating assembly initially clamps the fixed assembly, during the rotation process, the rotating assembly will drive the fixed assembly to tighten the grinding wheel, thus achieving the purpose of uniformly tightening the flange.

[0004] When grinding a diesel engine crankshaft, the grinding process usually involves grinding one area at a time around the crankshaft with a grinding machine. This method is not only inefficient but also prone to inaccurate grinding dimensions. Furthermore, active grinding can easily damage the crankshaft, causing rigid damage in the event of a side impact. If the crankshaft model and size do not match, different fixtures usually need to be disassembled and replaced, which is troublesome and the grinding equipment is not very versatile. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency grinding device and method for diesel engine crankshafts. Through the cooperation of a compression adjustment mechanism and a limiting post, this invention not only facilitates rapid switching between different grinding positions on the crankshaft, achieving efficient grinding of the diesel engine crankshaft, but also ensures overall grinding accuracy and minimizes damage to the crankshaft. Furthermore, the combination of the limiting mechanism and the compression adjustment mechanism allows for rapid adjustment of different limiting methods, and even after limiting, temporary adjustments can be made according to the crankshaft's dimensions to address model mismatches. The structural design of the grinding tool allows for rapid adjustment of the number of grinding tools based on different grinding positions on the crankshaft, and also facilitates quick replacement of different grinding tools depending on the crankshaft model.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency crankshaft grinding device for diesel engines includes a mounting base, which comprises a base and side plates fixed to both ends of the base. A limiting post is slidably connected to the base. A limiting hole is formed through the limiting post for inserting the front end of the crankshaft. A drive motor is fixedly mounted on one of the side plates, and the output end of the drive motor is fixedly connected to a compression adjustment mechanism. A limiting mechanism is inserted into the compression adjustment mechanism and fixedly mounted to the output end of the crankshaft. A sliding square rod is fixedly connected between the two side plates, and multiple grinding tools are slidably connected to the sliding square rod for grinding the first connecting rod journal, the second connecting rod journal, and the main shaft journal.

[0007] Furthermore, the compression adjustment mechanism includes a first docking groove, on the back of which two first sliding rods are symmetrically fixedly connected; a drive block is fixedly connected to the output end of the drive motor, and a first sliding hole is symmetrically through-holeed on the drive block; the first sliding rod is slidably connected to the first sliding hole; a first limiting block is fixedly provided at the end of the first sliding rod, and a first compression spring is sleeved on the first sliding rod, with both ends of the first compression spring fixedly connected to the first limiting block and the drive block, respectively.

[0008] Furthermore, two first sliding grooves are symmetrically formed on the front of the first docking groove, and a second sliding rod is fixedly connected inside the first sliding groove; a first docking block is provided inside the first sliding groove, and a second sliding hole is formed through the first docking block, the second sliding hole being slidably connected to the second sliding rod; a first docking slot is formed on the first docking block near the first sliding groove; a second docking slot is formed in the center of the front of the first docking groove; the first docking slot and the second docking slot are connected to the limiting mechanism.

[0009] Furthermore, the limiting mechanism includes a second docking groove, a main limiting block is fixedly installed in the middle of the second docking groove, and secondary limiting blocks are installed on the second docking grooves located on both sides of the main limiting block. The main limiting block is inserted into the opening of the second docking groove, and the secondary limiting block is inserted into the opening of the first docking groove. A mounting plate is fixedly connected to the back of the second docking groove by a fixing rod, and the mounting plate is fixedly installed to the output end by a first screw around its perimeter.

[0010] Furthermore, the second docking groove has a docking sliding groove on its front side; the main limiting block is fixedly disposed in the middle of the docking sliding groove, and a through hole is formed on the main limiting block; the secondary limiting block is located on the docking sliding groove on both sides of the main limiting block, and a first threaded hole is formed on the secondary limiting block; through holes are formed on both sides of the docking sliding groove.

[0011] Furthermore, an adjusting rod is rotatably connected to the through hole. The adjusting rod includes a rotating rod, which is rotatably connected to the through hole. Second limiting blocks are fixedly connected to both ends of the rotating rod. A first adjusting screw is fixedly connected to each of the second limiting blocks. The first adjusting screw is screwed into a first threaded hole, and the end of the first adjusting screw passes through the through hole and faces outward. An adjusting handle is fixedly connected to the end of the first adjusting screw. A locking screw is screwed onto each of the first adjusting screws, and the locking screw abuts against the outside of the second mating groove.

[0012] Furthermore, the grinder includes a sliding block, with a third sliding hole extending through its upper side. A third sliding rod is slidably connected to the third sliding hole, and a third limiting block and a mounting plate are fixedly connected to both ends of the third sliding rod, respectively. A grinding base plate is fixedly mounted on the mounting plate by mounting bolts, and a grinding block is fixedly mounted on the center of the surface of the grinding base plate. A second compression spring is sleeved on the third sliding rod. Both ends of the second compression spring are fixedly connected to the mounting plate and the sliding block, respectively. A sliding groove is formed at the bottom of the sliding block, and a limiting member is provided at the end of the sliding groove. The limiting member and the screw hole on the sliding groove are locked by a locking screw to form a sliding groove opening, which is slidably connected to the sliding square rod.

[0013] Furthermore, a U-shaped groove is provided on one side of the base, and a second base is provided on the U-shaped groove. The second base includes a base plate, and a T-shaped groove is provided on the top of the base plate. A T-shaped block is fixedly provided at the bottom of the limiting post, and the T-shaped block is slidably connected to the T-shaped groove. A second threaded hole and a sliding hole are provided through the base plate. A limiting rod is slidably connected to the sliding hole, and both ends of the limiting rod are fixedly connected to the U-shaped groove. A second adjusting screw is screwed into the second threaded hole. A second through hole is provided on one side of the side plate, and a stepper motor is fixedly connected to the side plate. The output end of the stepper motor passes through the second through hole and is fixedly connected to the second adjusting screw.

[0014] Furthermore, a through groove is provided through the first docking groove, and a scale line is provided on one side of the through groove; an indicator rod is fixedly provided on the first docking block, and the indicator rod passes through the through groove.

[0015] A method for grinding using the aforementioned high-efficiency diesel engine crankshaft grinding device includes the following steps: S1. First, fix the limiting mechanism to the output end of the crankshaft. Then, press the compression adjustment mechanism to make the front end of the crankshaft insert into the limiting hole and the limiting mechanism insert into the compression adjustment mechanism. After that, release the pressure to limit the crankshaft. S2. Pull the third slide bar and push the sliding block so that the corresponding number of grinding blocks are aligned with one of the first connecting rod journal, the second connecting rod journal or the main journal. Release the lever so that the grinding blocks are in contact with the position to be ground. S3. Start the drive motor and perform grinding through the active rotation of the crankshaft. After grinding one set, pull the third slide rod and push the sliding block to align the grinding block with the other sets of positions to be ground. Then, quickly switch the relative insertion positions of the limit mechanism and the compression adjustment mechanism. After switching, grind again. Repeat this cycle until all three sets of the crankshaft journals—the first connecting rod journal, the second connecting rod journal, and the main shaft journal—are ground. This achieves batch, efficient, and precise grinding of different positions on the crankshaft. S4. When dealing with different models of crankshafts, the insertion spacing can be changed by adjusting the compression adjustment mechanism, the length can be changed by adjusting the second base, and the grinding amplitude can be changed by changing the grinder. This allows for quick switching to deal with different models of crankshafts.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) This invention, through the cooperation of the compression adjustment mechanism and the limiting column, not only facilitates the rapid switching of different grinding positions of the crankshaft, achieving efficient grinding of the diesel engine crankshaft, but also ensures the overall precision of grinding; and is less likely to damage the crankshaft; specifically, the positions to be ground on the diesel engine crankshaft include multiple main journals, the first connecting rod journal, and the second connecting rod journal, divided into three groups, each with the same axis; the main journal group is located in the middle of the crankshaft, while the first and second connecting rod journals are located on both sides of the crankshaft and are equidistant from the axis; through the cooperation of the compression adjustment mechanism and the limiting column of this application, when grinding is performed... During grinding, firstly, by pressing the first mating groove, the first sliding rod slides along the first sliding hole, thereby increasing the distance between the first mating groove and the limiting post. Then, the front end of the crankshaft is inserted into the limiting hole of the limiting post, and the limiting mechanism fixedly installed on the output end of the crankshaft is connected to different positions of the first and second mating grooves respectively. Then, the pressure is released, and the limiting action of the first compression spring is used to quickly switch the position of the crankshaft's axis of rotation driven by the drive motor. Specifically, when grinding the main shaft journal, the limiting mechanism is inserted into both the first and second mating grooves. When grinding the first connecting rod journal... When one set of the second connecting rod journals is being processed, the limiting mechanism is inserted into the second mating slot and also into one of the first mating slots. This allows the main journal, the first connecting rod journal, and the second connecting rod journal to rotate independently. Through crankshaft rotation and passive, batch grinding, the different grinding positions of the crankshaft can be quickly switched, achieving efficient grinding of the diesel engine crankshaft. Simultaneously, since the second mating slot remains in the center during switching, the crankshaft's rotation axis always coincides with the rotation axis of the drive motor's output end during adjustment, ensuring unaffected grinding. This guarantees the grinding accuracy of each grinding position. The consistent dimensions and stability during switching ensure that grinding will not deviate. Since the rotation axis of the drive motor remains unchanged, the same set of grinders can be used throughout the entire grinding process without adjustment, thus guaranteeing overall grinding accuracy. Furthermore, because the crankshaft is limited by the action of the first compression spring, it is not completely fixed laterally and has a certain amount of swing space. Also, since the grinder is slidably connected on the sliding square rod, completely rigid grinding is avoided. Once the grinder touches the crankshaft crank, the crankshaft and the grinder have a certain amount of tolerance under the action of elasticity, thereby preventing crankshaft damage caused by rigid contact.

[0017] (2) This invention, through the cooperation of the limiting mechanism and the compression adjustment mechanism, can not only quickly perform different limiting methods, but also temporarily adjust according to the crankshaft size after the limiting is completed, thereby dealing with model mismatch; specifically, when the limiting mechanism and the compression adjustment mechanism are connected, the main limiting block and the secondary limiting block of the limiting mechanism are respectively connected to the corresponding docking slot. Since the first docking block is slidably connected to the second sliding rod through the second sliding hole, according to the different distances between the main limiting block and the secondary limiting block, the first docking block can be flexibly slid to quickly align with different limiting blocks, so that the limiting mechanism can be adjusted. The structure and compression adjustment mechanism can be quickly connected in different ways; at the same time, since the main limit block and the secondary limit block correspond to the axis lines of different grinding positions; if the crankshaft model changes, the distance between the first connecting rod journal, the second connecting rod journal and the main journal will change. At this time, since the first docking block can be temporarily slidable, this application only needs to rotate the first adjusting screw, and drive the two secondary limit blocks to move closer or further apart, so that the first docking block can be moved synchronously. Finally, by tightening the locking screw, it can be temporarily adjusted according to the size of the crankshaft after the limit is set, so as to deal with the model mismatch.

[0018] (3) Through the structural design of the grinder, the present invention can not only make rapid adjustments in quantity according to different grinding positions of the crankshaft, but also facilitate the quick replacement of different grinders according to different crankshaft models. Specifically, since different grinding positions require different numbers of grinders, at this time, it is only necessary to pull the third slide rod of the excess grinder so that the grinding block shrinks and is misaligned with the crankshaft and the limiting post, and slide the grinder to the edge of the grinder, so as to realize the rapid adjustment in quantity according to different grinding positions of the crankshaft. At the same time, during grinding, the grinding block is pressed against the grinding position by the compression action of the second compression spring. Therefore, if the crankshaft model changes and the size changes, it is only necessary to disassemble the limiting part to quickly replace other grinders, which facilitates the quick replacement of different grinders according to different crankshaft models and is easy to maintain. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 2 This is a schematic diagram of the dispersion structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 3 This is a schematic diagram of the mounting base dispersion structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 4 This is a schematic diagram of the grinding device structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 5 This is a schematic diagram of the output end structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 6 This is a schematic diagram of a partially dispersed structure of a high-efficiency grinding device for diesel engine crankshafts according to the present invention; Figure 7 This is a schematic diagram of the limiting mechanism of a high-efficiency grinding device for diesel engine crankshafts according to the present invention. Figure 8 This is a schematic diagram of the distributed structure of the compression adjustment mechanism of a high-efficiency grinding device for diesel engine crankshafts according to the present invention.

[0020] The attached figures are labeled as follows: Mounting bracket-100, base-110, U-shaped groove-111, side plate-120, second through hole-121, sliding square rod-130, second base-200, bottom plate-210, sliding hole-220, second threaded hole-230, stepper motor-240, second adjusting screw-250, T-slot-260, limit rod-270, drive motor-300, drive block-310, first sliding hole-311, pressure... Adjustment mechanism-400, first docking groove-410, first sliding groove-411, through groove-412, scale line-413, second sliding rod-414, first sliding rod-420, first limiting block-421, first compression spring-430, first docking block-440, indicator rod-441, first docking slot-442, second sliding hole-443, second docking slot-450, limiting mechanism-500, second docking... Groove-510, Connecting sliding groove-511, Through hole-512, Adjusting rod-520, Rotating rod-521, Second limit block-522, First adjusting screw-523, Adjusting handle-524, Locking screw-525, Mounting plate-530, First screw-531, Fixing rod-532, Secondary limit block-540, First threaded hole-541, Main limit block-550, Through hole-551, Crankshaft-6 00, Output end, Grinding tool-700, Sliding block-710, Sliding groove-711, Third sliding hole-712, Limiting component-720, Locking screw-730, Third sliding rod-740, Third limiting block-741, Second compression spring-750, Mounting plate-760, Grinding base plate-770, Grinding block-780, Mounting bolt-790, Limiting post-800, Limiting hole-810, T-block-820. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] Although the steps in this invention are arranged by reference numerals, this is not intended to limit the order of the steps. Unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" as used herein refers to and covers any and all possible combinations of one or more of the associated listed items.

[0023] Example like Figures 1-8 As shown, a high-efficiency grinding device for a diesel engine crankshaft includes a mounting base 100, which includes a base 110 and side plates 120 fixed to both ends of the base 110. A limiting post 800 is slidably connected to the base 110. A limiting hole 810 is formed through the limiting post 800 for inserting the front end of a crankshaft 600. A drive motor 300 is fixedly mounted on one of the side plates 120, and the output end of the drive motor 300 is fixedly connected to a compression adjustment mechanism 400. A limiting mechanism 500 is inserted into the compression adjustment mechanism 400 and fixedly mounted to the output end of the crankshaft 600. A sliding square rod 130 is fixedly connected between the two side plates 120, and multiple grinders 700 are slidably connected to the sliding square rod 130 for grinding the first connecting rod journal, the second connecting rod journal, and the main shaft journal.

[0024] The present invention, through the cooperation of the compression adjustment mechanism 400 and the limiting post 800, not only facilitates the rapid switching of different grinding positions of the crankshaft 600 and achieves efficient grinding of the diesel engine crankshaft 600, but also ensures the overall precision of grinding and is less likely to damage the crankshaft 600; a detailed description will follow.

[0025] Furthermore, the compression adjustment mechanism 400 includes a first docking groove 410, and two first slide rods 420 are symmetrically fixedly connected to the back side of the first docking groove 410; a drive block 310 is fixedly connected to the output end of the drive motor 300, and a first sliding hole 311 is symmetrically opened through the drive block 310; the first slide rods 420 are slidably connected to the first sliding hole 311; a first limiting block 421 is fixedly provided at the end of the first slide rod 420, and a first compression spring 430 is sleeved on the first slide rod 420, and the two ends of the first compression spring 430 are fixedly connected to the first limiting block 421 and the drive block 310 respectively.

[0026] It is worth noting that the drive motor 300 and other power equipment of this invention are all powered by an external power source, which is a conventional setting and will not be described in detail here.

[0027] Furthermore, the first docking groove 410 has two symmetrically arranged first sliding grooves 411 on its front side, and a second sliding rod 414 is fixedly connected inside the first sliding groove 411; a first docking block 440 is provided inside the first sliding groove 411, and a second sliding hole 443 is provided through the first docking block 440, which is slidably connected to the second sliding rod 414; a first docking slot 442 is provided on the first docking block 440 near the first sliding groove 411; a second docking slot 450 is provided in the center of the front side of the first docking groove 410; the first docking slot 442 and the second docking slot 450 are connected to the limiting mechanism 500.

[0028] Furthermore, the limiting mechanism 500 includes a second docking groove 510, a main limiting block 550 is fixedly installed in the middle of the second docking groove 510, and secondary limiting blocks 540 are installed on the second docking grooves 510 located on both sides of the main limiting block 550. The main limiting block 550 is inserted into the second docking groove opening 450, and the secondary limiting block 540 is inserted into the first docking groove opening 442. A mounting plate 530 is fixedly connected to the back of the second docking groove 510 by a fixing rod 532. The mounting plate 530 is fixedly installed around the crankshaft 600 output end by a first screw 531.

[0029] The diesel engine crankshaft 600 of this invention requires grinding at multiple main journals, a first connecting rod journal, and a second connecting rod journal, divided into three groups, each with the same axis. The main journal group is located in the middle of the crankshaft 600, while the first and second connecting rod journal groups are located on both sides of the crankshaft 600 and are equidistant from its axis. Through the cooperation of the compression adjustment mechanism 400 and the limiting post 800, during grinding, the first sliding rod 420 is slid along the first sliding hole 311 by pressing the first mating groove 410, thereby increasing the distance between the first mating groove 410 and the limiting post 800. Then, the front end of the crankshaft 600 is... The limiting mechanism 500, which is fixedly installed on the output end of the crankshaft 600, is inserted into the limiting hole 810 of the limiting post 810. The limiting mechanism 500 is then connected to different positions of the first docking slot 442 and the second docking slot 450. Releasing the lever allows for limiting by the compression action of the first compression spring 430, thus enabling rapid switching of the axis position of the crankshaft 600 driven by the drive motor 300. Specifically, when grinding the main shaft journal, the limiting mechanism 500 is inserted into both the first docking slot 442 and the second docking slot 450. When grinding either the first connecting rod journal or the second connecting rod journal, the limiting mechanism 500 is inserted into the second docking slot 450. And it is inserted into one of the first mating slots 442; in this way, the main journal, the first connecting rod journal, and the second connecting rod journal can rotate independently. Through the rotation of the crankshaft 600 and the passive batch grinding method, it is easy to quickly switch between different grinding positions of the crankshaft 600, so as to achieve efficient grinding of the diesel engine crankshaft 600; at the same time, since the second mating slot 450 is always in the center during switching, the rotation axis of the crankshaft 600 always coincides with the rotation axis of the output end of the drive motor 300 during switching adjustment without being affected. This ensures that the grinding size of each grinding position is the same and the stability during switching, so that the grinding does not go wrong. The deviation is minimized, and since the rotation axis of the drive motor 300 remains constant, the same set of grinders can be used throughout the grinding process without adjustment, thus ensuring overall grinding accuracy. Furthermore, since the crankshaft 600 is limited by the action of the first compression spring 430, it is not completely fixed laterally and has a certain amount of swing space. Also, since the grinder 700 is slidably connected on the sliding square rod 130, completely rigid grinding is avoided. Once the grinder 700 touches the crank of the crankshaft 600, both the crankshaft 600 and the grinder 700 have a certain amount of tolerance under the action of elasticity, thereby preventing damage to the crankshaft 600 caused by rigid contact.

[0030] Furthermore, the second docking groove 510 has a docking sliding groove 511 on its front side; the main limiting block 550 is fixedly disposed in the middle of the docking sliding groove 511, and a through hole 551 is provided through the main limiting block 550; the secondary limiting block 540 is located on the docking sliding groove 511 on both sides of the main limiting block 550, and a first threaded hole 541 is provided through the secondary limiting block 540; through holes 512 are provided through the two sides of the docking sliding groove 511.

[0031] This invention, through the cooperation of the limiting mechanism 500 and the compression adjustment mechanism 400, can not only quickly perform different limiting methods, but also temporarily adjust according to the size of the crankshaft 600 after the limiting is completed, thereby dealing with model mismatch; a detailed description will follow.

[0032] Furthermore, an adjusting rod 520 is rotatably connected to the through hole 551. The adjusting rod 520 includes a rotating rod 521, which is rotatably connected to the through hole 551. Second limiting blocks 522 are fixedly connected to both ends of the rotating rod 521. A first adjusting screw 523 is fixedly connected to each of the second limiting blocks 522. The first adjusting screw 523 is screwed into a first threaded hole 541, and the end of the first adjusting screw 523 passes through the through hole 512 and faces outwards. An adjusting handle 524 is fixedly connected to the end of the first adjusting screw 523. A locking screw 525 is screwed onto each of the first adjusting screws 523, and the locking screw 525 abuts against the outside of the second mating groove 510.

[0033] When the limiting mechanism 500 is inserted into the compression adjustment mechanism 400, the main limiting block 550 and the secondary limiting block 540 of the limiting mechanism 500 respectively engage with the corresponding docking slots. Since the first docking block 440 is slidably connected to the second sliding rod 414 through the second sliding hole 443, depending on the different distances between the main limiting block 550 and the secondary limiting block 540, the first docking block 440 can be flexibly slid to quickly align with different limiting blocks, allowing the limiting mechanism 500 and the compression adjustment mechanism 400 to quickly engage in different ways. Simultaneously, because the main limiting block 550... The secondary limit block 540 corresponds to the axis of different grinding positions. If the crankshaft 600 model changes, the distance between the first connecting rod journal, the second connecting rod journal and the main journal will change. Since the first docking block 440 can be temporarily slidable, this application only needs to rotate the first adjusting screw 523. The first adjusting screw 523 will drive the two secondary limit blocks 540 to move closer or further apart, and the first docking block 440 will move synchronously. Finally, by tightening the locking screw 525, it can be temporarily adjusted according to the size of the crankshaft 600 after the limit is set, so as to deal with the model mismatch.

[0034] Further, the grinder 700 includes a sliding block 710, with a third sliding hole 712 extending through its upper side. A third sliding rod 740 is slidably connected to the third sliding hole 712. A third limiting block 741 and a mounting plate 760 are fixedly connected to both ends of the third sliding rod 740, respectively. A grinding base plate 770 is fixedly mounted on the mounting plate 760 by mounting bolts 790. A grinding block 780 is fixedly mounted on the center of the surface of the grinding base plate 770. A second compression spring 750 is sleeved on the third sliding rod 740. Both ends of the second compression spring 750 are fixedly connected to the mounting plate 760 and the sliding block 710, respectively. A sliding groove 711 is formed at the bottom of the sliding block 710. A limiting member 720 is provided at the end of the sliding groove 711. The limiting member 720 and the screw hole on the sliding groove 711 are locked by a locking screw 730 to form a sliding groove opening. The sliding groove opening is slidably connected to the sliding square rod 130.

[0035] This invention, through the structural design of the grinder 700, not only allows for rapid adjustment of the number of grinders 700 according to different grinding positions on the crankshaft 600, but also facilitates quick replacement of different grinders 700 depending on the crankshaft 600 model. Specifically, since different grinding positions require different numbers of grinders 700, it is only necessary to pull the third slide rod 740 of the excess grinders 700, causing the grinding block 780 to retract and misalign with the crankshaft 600 and the limiting post 800, and then slide the grinder 700 to... The grinder 700 has a continuous edge, allowing for rapid adjustment of the number of grinders to suit different grinding positions on the crankshaft 600. During grinding, the second compression spring 750 presses the grinding block 780 against the desired grinding position. Therefore, if a change in the crankshaft 600 model results in a change in size, simply removing the limiting component 720 allows for quick replacement of the grinder 700, facilitating easy switching between different grinders 700 depending on the crankshaft 600 model and simplifying maintenance.

[0036] Furthermore, a U-shaped groove 111 is provided on one side of the base 110, and a second base 200 is provided on the U-shaped groove 111. The second base 200 includes a base plate 210, and a T-shaped groove 260 is provided on the top of the base plate 210. A T-shaped block 820 is fixedly provided at the bottom of the limiting post 800, and the T-shaped block 820 is slidably connected to the T-shaped groove 260. A second threaded hole 230 and a sliding hole 220 are provided through the base plate 210. A limiting rod 270 is slidably connected to the sliding hole 220, and both ends of the limiting rod 270 are fixedly connected to the U-shaped groove 111. A second adjusting screw 250 is screwed onto the second threaded hole 230. A second through hole 121 is provided on one side of the side plate 120, and a stepper motor 240 is fixedly connected to the side plate 120. The output end of the stepper motor 240 passes through the second through hole 121 and is fixedly connected to the second adjusting screw 250.

[0037] The structural design of the second base 200 allows the distance between the limiting post 800 and the limiting mechanism 500 to be adjustable, thereby meeting the grinding requirements of crankshafts 600 of different specifications. Specifically, by controlling the stepper motor 240, the second adjusting screw 250 is rotated. Due to the limiting rod 270, the base plate 210 moves laterally, thereby changing the distance between the limiting post 800 and the limiting mechanism 500 to meet the requirements of crankshafts 600 of different specifications.

[0038] Furthermore, a through groove 412 is provided through the first docking groove 410, and a scale line 413 is provided on one side of the through groove 412; an indicator rod 441 is fixedly provided on the first docking block 440, and the indicator rod 441 passes through the through groove 412.

[0039] By adjusting the first adjusting screw 523, the first docking block 440 can be moved synchronously, and the position indicated by the indicator rod 441 on the scale line 413 can be used for quick and accurate adjustment.

[0040] A method for grinding using the aforementioned high-efficiency diesel engine crankshaft grinding device includes the following steps: S1. First, fix the limiting mechanism 500 to the output end of the crankshaft 600. Then, press the compression adjustment mechanism 400 so that the front end of the crankshaft 600 is inserted into the limiting hole 810. After the limiting mechanism 500 is inserted into the compression adjustment mechanism 400, release the pressure to limit the crankshaft 600. S2. Pull the third slide bar 740 and push the slide block 710 so that the corresponding number of grinding blocks 780 are aligned with one of the first connecting rod journal, the second connecting rod journal or the main journal. Release the lever so that the grinding blocks 780 abut against the position to be ground. S3. Start the drive motor 300, and perform grinding by actively rotating the crankshaft 600. After grinding one set, pull the third slide bar 740 and push the slide block 710 so that the grinding block 780 is aligned with the other sets of positions to be ground. Then, quickly switch the relative insertion positions of the limit mechanism 500 and the compression adjustment mechanism 400. After switching, grind again. Repeat this cycle until the first connecting rod journal, the second connecting rod journal, and the main shaft journal are all ground. This achieves batch, efficient grinding of different positions of the crankshaft 600 with precision. S4. When dealing with different models of crankshaft 600, the insertion spacing is changed by adjusting the compression adjustment mechanism 400, the length is changed by adjusting the second base 200, and the grinding amplitude is changed by changing the grinder 700. This allows for quick switching to deal with different models of crankshaft 600.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A high-efficiency grinding device for diesel engine crankshafts, characterized in that, Includes a mounting base (100), the mounting base (100) including a base (110) and side plates (120) fixed to both ends of the base (110); a limiting post (800) is slidably connected to the base (110); a limiting hole (810) is formed through the limiting post (800) for inserting the front end of the crankshaft (600); a drive motor (300) is fixedly mounted on one of the side plates (120), the drive motor (300) The output end of the crankshaft (600) is fixedly connected to the compression adjustment mechanism (400); a limiting mechanism (500) is inserted into the compression adjustment mechanism (400), and the limiting mechanism (500) is fixedly installed to the output end of the crankshaft (600); a sliding square rod (130) is fixedly connected between the two side plates (120), and multiple polishers (700) are slidably connected on the sliding square rod (130) for polishing the first connecting rod journal, the second connecting rod journal and the main shaft journal.

2. The high-efficiency grinding device for diesel engine crankshaft according to claim 1, characterized in that, The compression adjustment mechanism (400) includes a first docking groove (410), and two first slide rods (420) are symmetrically fixedly connected to the back of the first docking groove (410); a drive block (310) is fixedly connected to the output end of the drive motor (300), and a first sliding hole (311) is symmetrically opened through the drive block (310); the first slide rod (420) is slidably connected to the first sliding hole (311); a first limiting block (421) is fixedly provided at the end of the first slide rod (420), and a first compression spring (430) is sleeved on the first slide rod (420), and the two ends of the first compression spring (430) are fixedly connected to the first limiting block (421) and the drive block (310) respectively.

3. The high-efficiency grinding device for diesel engine crankshaft according to claim 2, characterized in that, The first docking groove (410) has two first sliding grooves (411) symmetrically opened on the front side. A second sliding rod (414) is fixedly connected inside the first sliding groove (411). A first docking block (440) is provided in the first sliding groove (411). A second sliding hole (443) is opened through the first docking block (440). The second sliding hole (443) is slidably connected to the second sliding rod (414). A first docking slot (442) is opened on the first docking block (440) near the first sliding groove (411). A second docking slot (450) is opened in the middle of the front side of the first docking groove (410). The first docking slot (442) and the second docking slot (450) are connected to the limiting mechanism (500).

4. The high-efficiency grinding device for diesel engine crankshaft according to claim 3, characterized in that, The limiting mechanism (500) includes a second docking groove (510), a main limiting block (550) is fixedly installed in the middle of the second docking groove (510), and secondary limiting blocks (540) are installed on the second docking grooves (510) on both sides of the main limiting block (550). The main limiting block (550) is inserted into the second docking groove opening (450), and the secondary limiting block (540) is inserted into the first docking groove opening (442). The back of the second docking groove (510) is fixedly connected to the mounting plate (530) by a fixing rod (532), and the mounting plate (530) is fixedly installed to the output end by a first screw (531) around its perimeter.

5. The high-efficiency grinding device for diesel engine crankshaft according to claim 4, characterized in that, The second docking groove (510) has a docking sliding groove (511) on its front side; the main limiting block (550) is fixedly disposed in the middle of the docking sliding groove (511), and a through hole (551) is provided through the main limiting block (550); the secondary limiting block (540) is located on the docking sliding groove (511) on both sides of the main limiting block (550), and a first threaded hole (541) is provided through the secondary limiting block (540); through holes (512) are provided through the two sides of the docking sliding groove (511).

6. The high-efficiency grinding device for diesel engine crankshaft according to claim 5, characterized in that, An adjusting rod (520) is rotatably connected to the through hole (551). The adjusting rod (520) includes a rotating rod (521), which is rotatably connected to the through hole (551). A second limiting block (522) is fixedly connected to both ends of the rotating rod (521). A first adjusting screw (523) is fixedly connected to each of the second limiting blocks (522). The first adjusting screw (523) is screwed to the first threaded hole (541), and the end of the first adjusting screw (523) passes through the through hole (512) and faces outward. An adjusting handle (524) is fixedly connected to the end of the first adjusting screw (523). A locking screw (525) is screwed to each of the first adjusting screws (523), and the locking screw (525) abuts against the outside of the second mating groove (510).

7. The high-efficiency grinding device for diesel engine crankshaft according to claim 6, characterized in that, The grinder (700) includes a sliding block (710), with a third sliding hole (712) extending through its upper side. A third sliding rod (740) is slidably connected to the third sliding hole (712). A third limiting block (741) and a mounting plate (760) are fixedly connected to both ends of the third sliding rod (740). A grinding base plate (770) is fixedly mounted on the mounting plate (760) by mounting bolts (790). A grinding block (780) is fixedly mounted on the center of the surface of the grinding base plate (770). A second compression spring (750) is sleeved on the third slide rod (740); the two ends of the second compression spring (750) are fixedly connected to the mounting plate (760) and the sliding block (710) respectively; a sliding groove (711) is opened at the bottom of the sliding block (710), and a limiting member (720) is provided at the end of the sliding groove (711). The limiting member (720) and the screw hole on the sliding groove (711) are locked by a locking screw (730) to form a sliding groove opening, and the sliding groove opening is slidably connected to the sliding square rod (130).

8. The high-efficiency grinding device for diesel engine crankshaft according to claim 7, characterized in that, A U-shaped groove (111) is provided on one side of the base (110), and a second base (200) is provided on the U-shaped groove (111). The second base (200) includes a base plate (210), and a T-shaped groove (260) is provided on the top of the base plate (210). A T-shaped block (820) is fixedly provided at the bottom of the limiting post (800), and the T-shaped block (820) is slidably connected to the T-shaped groove (260). A second threaded hole (230) and a sliding hole (220) are provided through the base plate (210). A limiting rod (270) is slidably connected to the sliding hole (220), and both ends of the limiting rod (270) are fixedly connected to the U-shaped groove (111); a second adjusting screw (250) is screwed onto the second threaded hole (230); a second through hole (121) is provided on one side of the side plate (120), and a stepper motor (240) is fixedly connected to the side plate (120). The output end of the stepper motor (240) passes through the second through hole (121) and is fixedly connected to the second adjusting screw (250).

9. The high-efficiency grinding device for diesel engine crankshaft according to claim 3, characterized in that, A through groove (412) is provided on the first docking groove (410), and a scale line (413) is provided on one side of the through groove (412); an indicator rod (441) is fixed on the first docking block (440), and the indicator rod (441) passes through the through groove (412).

10. A method for grinding a diesel engine crankshaft using the high-efficiency grinding device according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. First, fix the limiting mechanism (500) to the output end of the crankshaft (600), then press the compression adjustment mechanism (400) so that the front end of the crankshaft (600) is inserted into the limiting hole (810). After the limiting mechanism (500) and the compression adjustment mechanism (400) are inserted, release the pressure to limit the crankshaft (600). S2. Pull the third slide bar (740) and push the slide block (710) so that the corresponding number of grinding blocks (780) are aligned with one of the first connecting rod journal, the second connecting rod journal or the main journal. Release the lever so that the grinding blocks (780) abut against the position to be ground. S3. Start the drive motor (300) and perform grinding by actively rotating the crankshaft (600). After grinding one set, pull the third slide bar (740) and push the sliding block (710) so that the grinding block (780) is aligned with the other sets of positions to be ground. Then quickly switch the relative insertion positions of the limit mechanism (500) and the compression adjustment mechanism (400). After switching, grind again. Repeat this cycle until the first connecting rod journal, the second connecting rod journal, and the main shaft journal are all ground. In this way, batch grinding of different positions of the crankshaft (600) is achieved efficiently and with precision. S4. When dealing with different models of crankshafts (600), the insertion spacing is changed by adjusting the compression adjustment mechanism (400), the length is changed by adjusting the second base (200), and the grinding amplitude is changed by changing the grinder (700). This allows for quick switching to deal with different models of crankshafts (600).

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