Polishing device for crankshaft surface

Abstract

The invention discloses a polishing device for the surface of a crankshaft, and relates to the field of polishing devices, the polishing device comprises the crankshaft and a machine tool slideway, a sliding seat is slidably mounted on the machine tool slideway, a polishing seat is slidably mounted on the sliding seat, and a polishing frame is movably mounted on the polishing seat. It needs to be explained that when the crankshaft is polished, an abutting rotating frame rotates, a cleaning scraper is driven to make contact with the crankshaft by triggering a lower moving rod, a rotating connecting rod is driven to rotate when a driving wheel rotates, and then the abutting rotating frame transversely moves in a reciprocating mode to drive the cleaning scraper to transversely move in a reciprocating mode; therefore, the surface of the crankshaft is fully cleaned; besides, during cleaning, if the surface of the crankshaft is polished unevenly or has abnormal protrusions, the magnetic suction inserting plate is separated from the positioning groove, if the surface of the crankshaft is overheated, the magnetic suction base loses magnetism after being heated, the magnetic suction inserting plate is pushed out of the positioning groove, then the polishing base can slide automatically, and the crankshaft is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of polishing apparatus technology, and more particularly to a polishing apparatus for crankshaft surfaces. Background Technology

[0002] The surface roughness of the crankshaft directly affects the formation of the lubricating oil film. Therefore, after crankshaft production, it needs to be polished. Polishing results in a smoother surface, allowing for the formation of a uniform oil film, reducing frictional losses caused by direct metal-to-metal contact, lowering the risk of abnormal wear, and improving surface accuracy and dimensional stability. Furthermore, polishing removes micron-level defects on the surface through abrasive micro-cutting and plastic flow, ensuring stable crankshaft operation in the engine.

[0003] It should be noted that when polishing a crankshaft on a machine tool, the crankshaft is mounted on the machine tool, and then the drive slide moves the polishing seat, which in turn moves the polishing frame. At the same time, the drive wheel rotates, causing the polishing belt to rotate, thus polishing the crankshaft. However, during crankshaft polishing, because the cutting fluid contains a large amount of debris and is recycled, if the cutting fluid is mixed with debris or not properly filtered, it is very easy for debris to adhere to the crankshaft. This results in impurities on the surface of the crankshaft during polishing, causing uneven polishing and affecting the polishing quality. In addition, if the crankshaft has poor heat dissipation during polishing, the local temperature will rise sharply, causing phase transformation on the material surface and forming a hard and brittle layer or soft spots. If these problems are not detected in time, the crankshaft production quality will be substandard, and in severe cases, it may even damage the crankshaft's fatigue strength and service life. Summary of the Invention

[0004] The purpose of this invention is to provide a polishing apparatus for crankshaft surfaces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A polishing device for crankshaft surfaces includes a crankshaft and a machine tool slide rail. A sliding seat is slidably mounted on the machine tool slide rail, a polishing seat is slidably mounted on the sliding seat, and a polishing frame is movably mounted on the polishing seat. A drive wheel and a plurality of polishing support wheels are mounted on the polishing frame. Polishing abrasive belts are sleeved on the drive wheel and the plurality of polishing support wheels, and the polishing abrasive belts polish the crankshaft. It also includes a synchronous clamping cleaning device, which is installed on the polishing seat and clamps against the crankshaft to clean it. The synchronous clamping cleaning device includes a clamping rotating frame, a movable bracket slidably mounted on the polishing seat, the clamping rotating frame rotatably mounted on the movable bracket, a trigger downward moving rod movably mounted on the clamping rotating frame, and a cleaning scraper mounted on the trigger downward moving rod to clean the crankshaft. The polishing seat is equipped with a transverse reciprocating pushing device, which is connected to the synchronous pressing and cleaning device. The transverse reciprocating pushing device includes a reciprocating drive column, which is rotatably installed in the polishing seat. A pushing slide is movably installed on the reciprocating drive column, and the movable bracket is installed on the pushing slide.

[0007] Furthermore, in a preferred embodiment of the present invention, the synchronous pressing and cleaning device further includes a pulling bracket, and the polishing frame is provided with a push-back groove, the pulling bracket being slidably installed in the push-back groove; A pulling shaft is mounted on the pulling bracket, and the pulling shaft is movably mounted inside the movable bracket; A pusher is mounted on the pull bracket, and the pusher is pressed by the crankshaft to push the pull bracket to move.

[0008] Furthermore, in a preferred embodiment of the present invention, the movable bracket is provided with a clamping groove, a central rotating shaft is rotatably installed in the clamping groove, a magnetic suction seat is installed on the clamping rotating frame, and the magnetic suction seat is installed on the central rotating shaft; A torsion spring is installed on the inner wall of the clamping groove, and the torsion spring is mounted on the central rotating shaft.

[0009] Furthermore, in a preferred embodiment of the present invention, a downward sliding groove is provided on the abutting rotating frame, and the trigger downward sliding rod is movably installed in the downward sliding groove; A retaining spring is installed on the inner wall of the downward sliding groove, and the retaining spring is mounted on the trigger downward sliding rod.

[0010] Furthermore, in a preferred embodiment of the present invention, the transverse reciprocating pushing device further includes a drive shaft, which is rotatably mounted on the polishing seat; The reciprocating drive column is mounted on the drive shaft, the drive shaft is equipped with a drive gear, and the drive gear is engaged with a lifting rack.

[0011] Furthermore, in a preferred embodiment of the present invention, a lifting frame is slidably mounted on the polishing seat, and the lifting frame is mounted on the lifting rack; The lifting frame is provided with a linkage sliding hole, the drive wheel is equipped with a rotating connecting rod, the rotating connecting rod is equipped with a lifting linkage shaft, and the lifting linkage shaft is movably installed in the linkage sliding hole.

[0012] Furthermore, in a preferred embodiment of the present invention, a push groove is provided annularly inclined on the reciprocating drive column, and a push block is installed on the push slide, the push block being movably installed in the push groove.

[0013] Furthermore, in a preferred embodiment of the present invention, an active separation device is also included, which is mounted on the polishing seat and drives the polishing seat to detach from the crankshaft; The active separation device includes a magnetic insertion plate, which is movably mounted on the sliding seat. A connecting plate is mounted on the polishing seat, and the magnetic insertion plate is inserted into the connecting plate. The active separation device also includes a plurality of push rods, all of which are movably mounted on the connecting plate; The connecting plate has a positioning groove, the magnetic insertion plate is inserted into the positioning groove, and the lower push rod moves down to push the magnetic insertion plate out of the positioning groove; The sliding seat has a shrinkage groove, and the magnetic insert plate is movably installed in the shrinkage groove.

[0014] Furthermore, in a preferred embodiment of the present invention, a push plate is mounted on a plurality of the push rods, a plurality of support springs are mounted on the push plate, and the support springs are mounted on the connecting plate; A separation pusher is mounted on the trigger downward moving rod, and the separation pusher moves downward to squeeze the lower push plate.

[0015] Furthermore, in a preferred embodiment of the present invention, the polishing seat is provided with a separation groove, and the sliding seat is slidably installed in the separation groove; A separation spring is installed on the inner wall of the separation groove, and the separation spring is mounted on the sliding seat.

[0016] The beneficial effects of the polishing device for crankshaft surfaces proposed in this invention are: In this invention, by setting up a synchronous clamping cleaning device, when the sliding seat drives the polishing seat to move, the polishing seat drives the polishing frame to move. At the same time, the drive wheel rotates and drives the polishing belt to rotate. As a result, when the polishing belt polishes the crankshaft, the crankshaft is squeezed by the polishing belt to move the pusher frame. The movement of the pusher frame drives the pull bracket to move. The movement of the pull bracket drives the pull shaft to move. The pull shaft drives the clamping rotating frame to rotate. In turn, the clamping rotating frame drives the magnetic seat to rotate. The rotation of the clamping rotating frame triggers the downward moving rod to drive the cleaning scraper to rotate, so that the cleaning scraper contacts the crankshaft and scrapes and cleans the surface of the crankshaft.

[0017] Furthermore, in this invention, by setting up a transverse reciprocating pushing device, when the drive wheel rotates, it drives the rotating connecting rod to rotate. The rotation of the rotating connecting rod drives the lifting linkage shaft to rotate. When the rotating connecting rod rotates one revolution, it drives the lifting frame to rise and fall vertically once. When the lifting frame rises and falls vertically, it drives the reciprocating drive column to swing back and forth. The rotation of the reciprocating drive column squeezes the push block to move through the push groove, so that the push block drives the push slide to slide horizontally back and forth. In turn, the push slide drives the rotating frame to move back and forth horizontally through the movable bracket. The moving back and forth horizontally of the rotating frame drives the cleaning scraper to move back and forth horizontally, so as to thoroughly clean the surface of the crankshaft.

[0018] Furthermore, in this invention, by setting up an active separation device, when the cleaning scraper moves back and forth across the surface of the crankshaft, if the surface of the crankshaft is unevenly polished or has abnormal protrusions, it will squeeze the cleaning scraper downwards, causing the cleaning scraper to drive the trigger downward moving rod downwards. The movement of the trigger downward moving rod drives the separation pusher to move, causing the separation pusher to squeeze the lower push plate to move. The movement of the lower push plate pushes multiple lower push rods to move, and the movement of the lower push rods pushes the magnetic insertion plate out of the positioning groove. At this time, under the pull force of the separation spring, the polishing seat slides on the sliding seat through the separation groove, thereby moving the polishing frame away from the crankshaft and avoiding the problem of crankshaft damage caused by continuous polishing. In addition, if overheating occurs during polishing, the heat is conducted to the magnetic insertion seat, and the magnetic insertion seat loses its magnetism due to heat, causing the magnetic insertion seat to be unable to attract the magnetic lower push plate. At this time, under the pull force of multiple support springs, the magnetic lower push plate is pulled downwards, pushing the magnetic insertion plate out of the positioning groove, which also allows the polishing seat to slide automatically, thereby avoiding damage to the crankshaft. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a polishing device for crankshaft surface provided in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the connection between the clamping rotating frame and the rotating connecting rod of a polishing device for crankshaft surfaces, as provided in an embodiment of the present invention. Figure 3This is a schematic diagram illustrating the connection between a pressing rotating frame and a magnetic insert plate, etc., in a polishing device for crankshaft surfaces, according to an embodiment of the present invention. Figure 4 A polishing apparatus for crankshaft surfaces is provided as an embodiment of the present invention. Figure 3 A schematic diagram of the structure of part A; Figure 5 This is a partial cross-sectional schematic diagram showing the connection between the rotating shaft and the magnetic base, etc., of a polishing device for crankshaft surfaces according to an embodiment of the present invention. Figure 6 This is a partial cross-sectional view of the connection between the clamping rotating frame and the trigger downward moving rod of a polishing device for crankshaft surface provided in an embodiment of the present invention. Figure 7 A schematic diagram of the fracture structure of the connection between the pusher and the puller of a polishing device for the surface of a crankshaft provided in an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the connection between the drive gear and the lifting rack of a polishing device for the surface of a crankshaft, as provided in an embodiment of the present invention. Figure 9 A partial structural diagram illustrating the connection between a reciprocating drive column and a push slide, etc., in a polishing device for a crankshaft surface, as provided in an embodiment of the present invention. Figure 10 A schematic diagram of the fracture structure of the connection between the lifting rack and the lifting frame of a polishing device for the surface of a crankshaft provided in an embodiment of the present invention; Figure 11 This is a partial cross-sectional view of the connection between the push rod and the push plate of a polishing device for crankshaft surfaces, as provided in an embodiment of the present invention. Figure 12 This is a partial cross-sectional view of the connection between the sliding seat and the polishing seat of a polishing device for crankshaft surfaces, provided in an embodiment of the present invention.

[0020] In the diagram: 1-crankshaft; 2-machine tool slideway; 3-sliding seat; 4-polishing seat; 5-polishing frame; 6-drive wheel; 7-polishing sander belt; 8-synchronous clamping cleaning device; 801-clamping rotating frame; 802-cleaning scraper; 803-movable bracket; 804-central shaft; 805-clamping groove; 806-clamping torsion spring; 807-returning frame; 808-returning groove; 809-pull bracket; 810-pull shaft; 811-trigger downward moving rod; 812-downward moving groove; 813-clamping spring; 814-magnetic seat; 9-lateral reciprocating pushing device; 901-reciprocating drive column; 902-Drive shaft; 903-Drive gear; 904-Push groove; 905-Push block; 906-Push slide; 907-Lifting rack; 908-Lifting frame; 909-Rotating connecting rod; 910-Lifting linkage shaft; 911-Linkage sliding hole; 10-Active separation device; 1001-Magnetic insertion plate; 1002-Contraction groove; 1003-Connecting plate; 1004-Push rod; 1005-Push plate; 1006-Support spring; 1007-Positioning groove; 1008-Separation push frame; 1009-Separation slide groove; 1010-Separation spring; 11-Polishing support wheel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Please refer to the attached instruction manual. Figures 1-12 The present invention provides a polishing device for crankshaft surface, which includes crankshaft 1 and machine tool slide 2. A sliding seat 3 is slidably installed on the machine tool slide 2, a polishing seat 4 is slidably installed on the sliding seat 3, and a polishing frame 5 is movably installed on the polishing seat 4. A drive wheel 6 and a plurality of polishing support wheels 11 are installed on the polishing frame 5. A polishing abrasive belt 7 is sleeved on the drive wheel 6 and the plurality of polishing support wheels 11, and the polishing abrasive belt 7 polishes the crankshaft 1.

[0028] Further, please refer to the appendix to the instruction manual. Figures 2-7The present invention provides a polishing device for a crankshaft surface, which further includes a synchronous clamping cleaning device 8. The synchronous clamping cleaning device 8 is installed on a polishing seat 4 and clamps against the crankshaft 1 to clean the crankshaft 1. Specifically, the synchronous clamping cleaning device 8 includes a clamping rotating frame 801. A movable bracket 803 is slidably installed on the polishing seat 4. The clamping rotating frame 801 is rotatably installed on the movable bracket 803. A trigger downward moving rod 811 is movably installed on the clamping rotating frame 801. A cleaning scraper 802 is installed on the trigger downward moving rod 811 and cleans the crankshaft 1. It should be noted that, in this embodiment of the invention, when polishing the crankshaft 1, the crankshaft 1 is moved by the pressure of the polishing belt 7 on the pusher 807, which in turn causes the pressing rotating frame 801 to rotate. The rotation of the pressing rotating frame 801 triggers the lower moving rod 811 to drive the cleaning scraper 802 to rotate, so that the cleaning scraper 802 contacts the crankshaft 1 and scrapes and cleans the surface of the crankshaft 1.

[0029] More specifically, in this embodiment of the invention, a transverse reciprocating pushing device 9 is installed on the polishing seat 4, and the transverse reciprocating pushing device 9 is connected to the synchronous pressing cleaning device 8 in a transmission manner; the transverse reciprocating pushing device 9 includes a reciprocating drive column 901, which is rotatably installed in the polishing seat 4, and a pushing slide 906 is movably installed on the reciprocating drive column 901, and a movable bracket 803 is installed on the pushing slide 906. It should be noted that, in this embodiment of the invention, when the drive wheel 6 rotates to polish, it drives the rotating connecting rod 909 to rotate, thereby causing the pushing block 905 to drive the pushing slide 906 to slide horizontally back and forth. The pushing slide 906 drives the pressing rotating frame 801 to move back and forth laterally through the movable bracket 803, and the backing rotating frame 801 moves back and forth laterally to drive the cleaning scraper 802 to move back and forth laterally, so as to fully clean the surface of the crankshaft 1.

[0030] Please continue to refer to the instruction manual appendix. Figures 2-7 Furthermore, the polishing device for crankshaft surface provided in this embodiment of the invention, the synchronous pressing cleaning device 8 further includes a pull bracket 809, a push groove 808 is provided on the polishing frame 5, and the pull bracket 809 is slidably installed in the push groove 808; a pull shaft 810 is installed on the pull bracket 809, and the pull shaft 810 is movably installed in the movable bracket 803; Furthermore, a pusher bracket 807 is installed on the pull bracket 809. The pusher bracket 807 is pressed by the crankshaft 1 and is used to push the pull bracket 809 to move. It should be noted that, in this embodiment of the invention, when the polishing belt 7 polishes the crankshaft 1, the crankshaft 1 is pressed by the polishing belt 7 to move the pusher bracket 807. The movement of the pusher bracket 807 drives the pull bracket 809 to move, so that the pull bracket 809 slides horizontally in the pusher groove 808. The movement of the pull bracket 809 drives the pull shaft 810 to move, so that the pull shaft 810 drives the anti-rotating frame 801 to rotate, thereby achieving the purpose of automatic rotation of the anti-rotating frame 801.

[0031] More specifically, in this embodiment of the invention, the movable bracket 803 is provided with a clamping groove 805, a central rotating shaft 804 is rotatably installed in the clamping groove 805, a magnetic seat 814 is installed on the clamping rotating frame 801, and the magnetic seat 814 is installed on the central rotating shaft 804; in addition, a clamping torsion spring 806 is installed on the inner wall of the clamping groove 805, and the clamping torsion spring 806 is installed on the central rotating shaft 804. It should be noted that, in this embodiment of the invention, when the crankshaft 1 is polished, the polishing abrasive belt 7 pushes the pusher 807 to move. The movement of the pusher 807 drives the puller 809 to move. The movement of the puller 809 drives the puller shaft 810 to move. The puller shaft 810 drives the clamping rotating frame 801 to rotate. The clamping rotating frame 801 drives the magnetic seat 814 to rotate. The magnetic seat 814 rotates in the clamping rotating groove 805 through the central rotating shaft 804, and causes the clamping torsion spring 806 to be stressed, so as to achieve the purpose of the clamping rotating frame 801 driving the cleaning scraper 802 to automatically contact the crankshaft 1.

[0032] More specifically, in this embodiment of the invention, a downward sliding groove 812 is provided on the retaining rotating frame 801, and a trigger downward sliding rod 811 is movably installed in the downward sliding groove 812; a retaining spring 813 is installed on the inner wall of the downward sliding groove 812, and the retaining spring 813 is installed on the trigger downward sliding rod 811. It should be noted that, in this embodiment of the invention, when the cleaning scraper 802 reciprocates laterally on the surface of the crankshaft 1, if the surface of the crankshaft is unevenly polished or has abnormal protrusions, it will squeeze the cleaning scraper 802 downward, causing the cleaning scraper 802 to drive the trigger downward sliding rod 811 downward in the downward sliding groove 812, and causing the retaining spring 813 to be stressed.

[0033] Please refer to the instruction manual attached. Figure 2 and Figures 8-10 Furthermore, the polishing device for crankshaft surface provided in this embodiment of the invention further includes a drive shaft 902 in the transverse reciprocating pushing device 9, which is rotatably mounted on the polishing seat 4; Furthermore, the reciprocating drive column 901 is mounted on the drive shaft 902, and a drive gear 903 is mounted on the drive shaft 902. A lifting rack 907 meshes with the drive gear 903. It should be noted that, in this embodiment of the invention, when the lifting frame 908 is raised or lowered, it drives the lifting rack 907 to move, causing the lifting rack 907 to drive the drive gear 903 to rotate. The rotation of the drive gear 903, through the drive shaft 902, drives the reciprocating drive column 901 to rotate, thus realizing the reciprocating rotation of the reciprocating drive column 901.

[0034] More specifically, in this embodiment of the invention, a lifting frame 908 is slidably mounted on the polishing seat 4, and the lifting frame 908 is mounted on the lifting rack 907; a linkage sliding hole 911 is opened on the lifting frame 908, a rotating connecting rod 909 is mounted on the drive wheel 6, and a lifting linkage shaft 910 is mounted on the rotating connecting rod 909, and the lifting linkage shaft 910 is movably mounted in the linkage sliding hole 911. It should be noted that, in this embodiment of the invention, when the drive wheel 6 rotates, it drives the rotating connecting rod 909 to rotate, and the rotation of the rotating connecting rod 909 drives the lifting linkage shaft 910 to rotate, so that the lifting linkage shaft 910 slides in the linkage sliding hole 911 and drives the lifting frame 908 to move. When the rotating connecting rod 909 rotates one revolution, it drives the lifting frame 908 to vertically rise and fall once, so as to achieve the purpose of vertically raising and falling of the lifting frame 908.

[0035] Please continue to refer to the instruction manual appendix. Figure 2 and Figures 8-10 More specifically, in this embodiment of the invention, a push groove 904 is annularly inclined on the reciprocating drive column 901, and a push block 905 is installed on the push slide 906, with the push block 905 movably installed within the push groove 904. It should be noted that in this embodiment of the invention, when the rotating connecting rod 909 rotates one revolution, it can drive the reciprocating drive column 901 to rotate one revolution. The rotation of the reciprocating drive column 901, through the push groove 904, compresses the push block 905, causing the push block 905 to drive the push slide 906 to slide horizontally back and forth. This, in turn, causes the push slide 906 to drive the rotating frame 801 to move back and forth laterally via the movable bracket 803, achieving the purpose of the rotating frame 801 driving the cleaning scraper 802 to move back and forth laterally.

[0036] Further, please refer to the appendix to the instruction manual. Figures 2-4 and Figures 11-12This invention provides a polishing device for a crankshaft surface, which further includes an active separation device 10. The active separation device 10 is mounted on a polishing seat 4 and drives the polishing seat 4 to detach from the crankshaft 1. The active separation device 10 includes a magnetic insertion plate 1001, which is movably mounted on a sliding seat 3. A connecting plate 1003 is mounted on the polishing seat 4, and the magnetic insertion plate 1001 is inserted into the connecting plate 1003. It should be noted that in this embodiment of the invention, when uneven polishing or abnormal protrusions occur on the surface of the crankshaft, the lower push rod 1004 moves to push the magnetic insertion plate 1001 out of the positioning groove 1007. Or, when overheating occurs during polishing, the heat is conducted to the magnetic seat 814, which loses its magnetism due to heat. This causes the magnetic lower push plate 1005 to be pulled down, pushing the magnetic insertion plate 1001 out of the positioning groove 1007, thereby achieving the purpose of automatically moving the polishing seat 4 away from the crankshaft 1.

[0037] More specifically, the active separation device 10 also includes multiple push rods 1004, all of which are movably mounted on the connecting plate 1003. The connecting plate 1003 has a positioning groove 1007, into which the magnetic insertion plate 1001 is inserted. The push rods 1004 move downwards, pushing the magnetic insertion plate 1001 out of the positioning groove 1007. Furthermore, the sliding seat 3 has a shrinkage groove 1002, into which the magnetic insertion plate 1001 is movably mounted. It should be noted that, in this embodiment of the invention, when the magnetic insertion plate 1001 moves downwards, it moves vertically within the shrinkage groove 1002 and disengages from the positioning groove 1007, thereby allowing the sliding seat 3 to automatically retract.

[0038] More specifically, in this embodiment of the invention, a plurality of push rods 1004 are mounted with push plates 1005, a plurality of support springs 1006 are mounted on the push plates 1005, and the support springs 1006 are mounted on the connecting plate 1003. Furthermore, a separation pusher 1008 is installed on the trigger lowering rod 811. The separation pusher 1008 moves downward to press against the lower push plate 1005. It should be noted that in this embodiment of the invention, when the surface of the crankshaft is unevenly polished or has abnormal protrusions, the cleaning scraper 802 will be pressed downward, causing the cleaning scraper 802 to drive the trigger lowering rod 811 to move downward within the lowering groove 812. The movement of the trigger lowering rod 811 drives the separation pusher 1008 to move, causing the separation pusher 1008 to press against the lower push plate 1005. The movement of the lower push plate 1005 pushes multiple lower push rods 1004 to move, and the movement of the lower push rods 1004 pushes the magnetic insert plate 1001 to disengage from the positioning groove 1007, thereby unlocking the sliding seat 3.

[0039] Please continue to refer to the instruction manual appendix. Figures 2-4 and Figures 11-12More specifically, in this embodiment of the invention, the polishing seat 4 is provided with a separation groove 1009, and the sliding seat 3 is slidably installed in the separation groove 1009; a separation spring 1010 is installed on the inner wall of the separation groove 1009, and the separation spring 1010 is installed on the sliding seat 3. It should be noted that, in this embodiment of the invention, when the push rod 1004 moves to push the magnetic insertion plate 1001 out of the positioning groove 1007, thereby unlocking the connecting plate 1003, the polishing seat 4 slides on the sliding seat 3 through the separation groove 1009 under the pull force of the separation spring 1010, thereby achieving the purpose of the polishing seat 4 driving the polishing frame 5 away from the crankshaft 1.

[0040] In summary, the working principle of the polishing device for crankshaft surfaces provided in this embodiment of the invention is as follows: The sliding seat 3 drives the polishing seat 4 to move, which in turn drives the polishing frame 5 to move. At the same time, the drive wheel 6 rotates, which drives the polishing belt 7 to rotate. As the polishing belt 7 polishes the crankshaft 1, the crankshaft 1 is pushed by the polishing belt 7 to move the pusher 807. The movement of the pusher 807 drives the pull bracket 809 to move, which slides horizontally in the pusher groove 808. The movement of the pull bracket 809 drives the pull shaft 810 to move, which drives the clamping rotating frame 801 to rotate. This causes the clamping rotating frame 801 to drive the magnetic seat 814 to rotate. The magnetic seat 814 rotates in the clamping rotating groove 805 through the central rotating shaft 804, and the clamping torsion spring 806 is stressed. In addition, the rotation of the clamping rotating frame 801 triggers the lower moving rod 811 to drive the cleaning scraper 802 to rotate, so that the cleaning scraper 802 contacts the crankshaft 1 and scrapes and cleans the surface of the crankshaft 1. Furthermore, when the drive wheel 6 rotates, it drives the rotating connecting rod 909 to rotate. The rotation of the rotating connecting rod 909 drives the lifting linkage shaft 910 to rotate, causing the lifting linkage shaft 910 to slide in the linkage sliding hole 911 and drive the lifting frame 908 to move. When the rotating connecting rod 909 rotates one revolution, it drives the lifting frame 908 to rise and fall vertically once. The movement of the lifting frame 908 drives the lifting rack 907 to move, causing the lifting rack 907 to drive the drive gear 903 to rotate. The rotation of the drive gear 903 drives the reciprocating drive column 901 to rotate through the drive shaft 902. The rotation of the reciprocating drive column 901 pushes the push block 905 to move through the push groove 904, causing the push block 905 to drive the push slide 906 to slide horizontally back and forth. In turn, the push slide 906 drives the abutting rotating frame 801 to move back and forth laterally through the movable bracket 803. The abutting rotating frame 801 moves back and forth laterally, causing the cleaning scraper 802 to move back and forth laterally, thereby thoroughly cleaning the surface of the crankshaft 1. Furthermore, when the cleaning scraper 802 reciprocates across the surface of the crankshaft 1, if the surface of the crankshaft is unevenly polished or has abnormal protrusions, it will squeeze the cleaning scraper 802 downwards. This causes the cleaning scraper 802 to drive the trigger downward moving rod 811 to move downwards within the downward moving groove 812, and causes the clamping spring 813 to be stressed. The trigger downward moving rod 811 moves, causing the separation pusher 1008 to move. This causes the separation pusher 1008 to press the lower push plate 1005 to move. The movement of the lower push plate 1005 pushes multiple lower push rods 1004 to move, and causes multiple support springs 1006 to be stressed. The movement of the lower push rods 1004 pushes the magnetic insert plate 1001 to disengage from the positioning groove 1007. At this time, under the pull force of the separation spring 1010, the polishing seat 4 slides on the sliding seat 3 through the separation slide groove 1009, thereby causing the polishing frame 5 to move away from the crankshaft 1, avoiding the problem of crankshaft damage caused by continuous polishing.

[0041] In addition, it should be noted that if overheating occurs during polishing, the heat will be conducted to the magnetic base 814, causing the magnetic base 814 to lose its magnetism and making it unable to attract the magnetic push plate 1005. At this time, under the pull force of multiple support springs 1006, the magnetic push plate 1005 is pulled down, pushing the magnetic insert plate 1001 out of the positioning groove 1007, which also allows the polishing seat 4 to slide automatically, thereby avoiding damage to the crankshaft 1.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A polishing apparatus for crankshaft surfaces, characterized in that, It includes a crankshaft and a machine tool slide rail. A sliding seat is slidably mounted on the machine tool slide rail. A polishing seat is slidably mounted on the sliding seat. A polishing frame is movably mounted on the polishing seat. A drive wheel and multiple polishing support wheels are mounted on the polishing frame. Polishing abrasive belts are sleeved on the drive wheel and the multiple polishing support wheels. The polishing abrasive belts polish the crankshaft. It also includes a synchronous clamping cleaning device, which is installed on the polishing seat and clamps against the crankshaft to clean it. The synchronous clamping cleaning device includes a clamping rotating frame, a movable bracket slidably mounted on the polishing seat, the clamping rotating frame rotatably mounted on the movable bracket, a trigger downward moving rod movably mounted on the clamping rotating frame, and a cleaning scraper mounted on the trigger downward moving rod to clean the crankshaft. The polishing seat is equipped with a transverse reciprocating pushing device, which is connected to the synchronous pressing and cleaning device. The transverse reciprocating pushing device includes a reciprocating drive column, which is rotatably installed in the polishing seat. A pushing slide is movably installed on the reciprocating drive column, and the movable bracket is installed on the pushing slide.

2. The polishing device for crankshaft surfaces according to claim 1, characterized in that, The synchronous clamping cleaning device also includes a pulling bracket, and the polishing frame is provided with a push-back groove, and the pulling bracket is slidably installed in the push-back groove; A pulling shaft is mounted on the pulling bracket, and the pulling shaft is movably mounted inside the movable bracket; A pusher is mounted on the pull bracket, and the pusher is pressed by the crankshaft to push the pull bracket to move.

3. A polishing device for crankshaft surfaces according to claim 2, characterized in that, The movable bracket is provided with a clamping groove, and a central rotating shaft is rotatably installed in the clamping groove. A magnetic suction seat is installed on the clamping rotating bracket, and the magnetic suction seat is installed on the central rotating shaft. A torsion spring is installed on the inner wall of the clamping groove, and the torsion spring is mounted on the central rotating shaft.

4. A polishing device for crankshaft surfaces according to claim 3, characterized in that, The clamping rotating frame is provided with a downward movement groove, and the trigger downward movement rod is movably installed in the downward movement groove; A retaining spring is installed on the inner wall of the downward sliding groove, and the retaining spring is mounted on the trigger downward sliding rod.

5. A polishing device for crankshaft surfaces according to claim 1, characterized in that, The transverse reciprocating pushing device also includes a drive shaft, which is rotatably mounted on the polishing seat; The reciprocating drive column is mounted on the drive shaft, the drive shaft is equipped with a drive gear, and the drive gear is engaged with a lifting rack.

6. A polishing apparatus for crankshaft surfaces according to claim 5, characterized in that, A lifting frame is slidably mounted on the polishing seat, and the lifting frame is mounted on the lifting rack. The lifting frame is provided with a linkage sliding hole, the drive wheel is equipped with a rotating connecting rod, the rotating connecting rod is equipped with a lifting linkage shaft, and the lifting linkage shaft is movably installed in the linkage sliding hole.

7. A polishing apparatus for crankshaft surfaces according to claim 6, characterized in that, The reciprocating drive column is provided with a push groove in an annular inclination, and a push block is installed on the push slide, with the push block movably installed in the push groove.

8. A polishing apparatus for crankshaft surfaces according to claim 1, characterized in that, It also includes an active separation device, which is mounted on the polishing seat and drives the polishing seat to detach from the crankshaft; The active separation device includes a magnetic insertion plate, which is movably mounted on the sliding seat. A connecting plate is mounted on the polishing seat, and the magnetic insertion plate is inserted into the connecting plate. The active separation device also includes a plurality of push rods, all of which are movably mounted on the connecting plate; The connecting plate has a positioning groove, the magnetic insertion plate is inserted into the positioning groove, and the lower push rod moves down to push the magnetic insertion plate out of the positioning groove; The sliding seat has a shrinkage groove, and the magnetic insert plate is movably installed in the shrinkage groove.

9. A polishing apparatus for crankshaft surfaces according to claim 8, characterized in that, A plurality of push rods are equipped with push plates, and a plurality of support springs are mounted on the push plates. The support springs are mounted on the connecting plate. A separation pusher is mounted on the trigger downward moving rod, and the separation pusher moves downward to squeeze the lower push plate.

10. A polishing apparatus for crankshaft surfaces according to claim 9, characterized in that, The polishing seat is provided with a separation groove, and the sliding seat is slidably installed in the separation groove; A separation spring is installed on the inner wall of the separation groove, and the separation spring is mounted on the sliding seat.

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