A polishing device for crankshaft processing

Abstract

The present invention relates to the technical field of crankshaft processing, and in particular to a polishing device for crankshaft processing, comprising an L-shaped base, a first driving mechanism is provided on the upper surface of the horizontal end of the base, and the crankshaft body is clamped between the first driving mechanism, a support frame is movably provided on the vertical end of the base, the support frame and the horizontal end of the base are parallel to each other, and a second driving mechanism for driving the support frame to rise and fall is provided on the base; the upper and lower opposite side walls of the support frame are slidably provided with a slide plate, an adjustment component is slidably provided inside the slide plate, two opposite side walls of the two slide plates are provided with a rotating shaft at both ends, and a rotating belt is rotatably connected between the two rotating shafts arranged along the length direction of the slide plate, and a push plate is fixed to the outer wall of the rotating belt. The polishing device for crankshaft processing provided by the present invention can be well adapted to crankshafts of different models, so that the main journals and connecting rod journals of crankshafts of different models can be completely polished.

Description

[0001] This application is a divisional application with the application date of May 9, 2024, application number 202410569445.5, and the invention name is A polishing device for crankshaft processing. Technical Field

[0002] The invention relates to the technical field of crankshaft processing, in particular to a polishing device for crankshaft processing. Background Art

[0003] The crankshaft is the main rotating part of the engine. After the connecting rod is installed, the up and down reciprocating motion of the connecting rod can be converted into rotational motion. The crankshaft is mostly made of carbon structural steel or ductile iron, and has two important parts: the main journal and the connecting rod journal.

[0004] Publication (announcement) number: CN206277231U Publication (announcement) date: 2017-06-27, discloses a crankshaft polishing machine, including an operating table and a sliding car plate, a guide rail is arranged on one side of the operating table, the sliding car plate is arranged on the guide rail and can slide back and forth along the guide rail, a first motor and a support seat are arranged on the sliding car plate, the output shaft of the first motor is connected to a driving wheel, a connecting rod is hinged on one side of the support seat, a driven wheel is arranged at one end of the connecting rod, the driving wheel and the driven wheel are located in the same plane, and abrasive belts are wound around the driving wheel and the driven wheel; a second motor and a top are arranged relatively on the operating table, and the output shaft of the second motor is connected to a chuck.

[0005] As in the above application, most polishing devices polish the journals on a crankshaft one by one, and are unable to polish the main journal and the connecting rod journal at the same time, resulting in low work efficiency. In addition, the grinding positions of most polishing devices are fixed. Different types of crankshafts have different lengths of main journals and connecting rod journals. Existing polishing devices cannot adapt well to different types of crankshafts, and the main journals and connecting rod journals of different types of crankshafts cannot be completely polished. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a polishing device for crankshaft machining.

[0007] The present invention adopts the following technical scheme: a polishing device for crankshaft processing, comprising an L-shaped base, a first driving mechanism is provided on the upper surface of the horizontal end of the base, and the crankshaft body is clamped between the first driving mechanisms, a support frame is movably provided on the vertical end of the base, the support frame and the horizontal end of the base are parallel to each other, and a second driving mechanism is provided on the base to drive the support frame to move up and down;

[0008] The upper and lower opposite side walls of the support frame are slidably provided with slides, and an adjustment component is slidably provided in the slide, and rotating shafts are provided at both ends of the opposite side walls of the two slides, and a rotating belt is rotatably connected between the two rotating shafts arranged along the length direction of the slide, and a push plate is fixedly connected to the outer wall of the rotating belt, and a bracket and two meshing gears are provided on the upper wall of the slide located at the upper end of the support frame, and the lower ends of the two gears are fixedly connected to the corresponding rotating shafts, and the upper surface of the bracket located at the upper end of one of the gears is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to the gear, and a connecting column is fixedly connected between the rotating shafts at the upper and lower ends;

[0009] The adjusting assembly includes a slider slidably connected to the slide plate, a second screw is rotatably connected to the slide plate, a slide groove is provided on the upper surface of the slide plate along the length direction, and the other end of the slider is fixedly connected to the first grinding assembly and the second grinding assembly in sequence through the slide groove.

[0010] As a further description of the above technical solution: the first driving mechanism includes a vertical table and a vertical plate integrally formed on the upper surface of the horizontal end of the base, and a first motor is fixed with bolts on the upper end of the vertical table, a movable plate is slidably connected to the side of the upper surface of the base away from the vertical plate, and a first electric push rod is fixedly connected between the side wall of the movable plate and the base, a connecting shaft is fixedly connected to the output end of the first motor, and the other end of the connecting shaft is movably inserted in the vertical plate, a chuck is fixedly connected to the other end of the connecting shaft extending to the vertical plate, a chuck is rotatably connected to the inner wall of the movable plate, a crankshaft body is clamped between the two chucks, the second driving mechanism includes a connecting plate fixedly connected to the inner wall of the vertical end of the base, and a support frame is provided at the bottom of the connecting plate, and a second electric push rod is fixedly connected between the support frame and the connecting plate.

[0011] As a further description of the above technical solution: one end of the slide plate located in the support frame is threadedly connected to a first screw rod, and two of the first screw rods extend to the side walls outside the support frame and are rotatably connected to a transmission belt.

[0012] As a further description of the above technical solution: the slider in the skateboard close to the first motor is fixedly connected to the inner wall of the skateboard, and the side walls of the slider in the middle are provided with through holes, the slider at the other end of the skateboard is threadedly connected to the second screw, and the slider is rotatably connected to the first rotating rod and the second rotating rod, and the first rotating rod and the second rotating rod are rotatably connected.

[0013] As a further description of the above technical solution: the first grinding assembly includes a sleeve fixedly connected to the upper end of the slider, an insertion rod movably inserted in the sleeve, and a first spring is fixedly connected between the bottom end of the insertion rod and the sleeve, a connecting seat is fixedly connected to the upper end of the insertion rod, and a grinding block is slidably connected to the upper end of the connecting seat, the second grinding assembly includes a connecting seat fixedly connected to the upper end of the slider, a grinding block is slidably connected to the upper end of the connecting seat, and the distance from the connecting rod journal to the main journal of the crankshaft body is less than half of the grinding block.

[0014] As a further description of the above technical solution: a baffle is movably inserted in the grinding block, pressure blocks are movably inserted at both ends of the grinding block along the width direction, moving blocks are fixedly connected to two opposite side walls of the pressure block, a second spring is fixedly connected between the moving block and the grinding block, a pressure rod is fixedly connected to one of the side walls of the pressure block, and the pressure rod is movably inserted in the grinding block, an insertion block is movably inserted on the side wall of the baffle close to the pressure rod, a third spring is fixedly connected between the insertion block and the baffle, a limit plate is movably inserted in the grinding block, and one end of the limit plate is fixedly connected to the baffle, and a fourth spring is fixedly connected between the limit plate and the grinding block.

[0015] As a further description of the above technical solution: a plurality of push plates are provided, and the plurality of push plates are distributed at equal intervals.

[0016] As a further description of the above technical solution: there are a plurality of sliders, and the sliders are evenly spaced, and the length of the first rotating rod is half of that of the second rotating rod.

[0017] As a further description of the above technical solution: both ends of the baffle are provided with a trapezoidal structure, and the length of the baffle extending from one end of the pressure rod to the outside of the grinding block is greater than the length of the other end of the baffle extending to the outside of the grinding block.

[0018] In the above technical scheme, the present invention provides a polishing device for crankshaft processing. According to different crankshafts, the slide plate is adjusted to the corresponding position, and then the spacing between the first grinding assembly and the second grinding assembly is adjusted through the adjustment assembly. Then, the support frame and the first grinding assembly and the second grinding assembly on one side are adjusted through the second driving mechanism. The first grinding assembly can grind and polish connecting rod journals of different sizes, and due to the cooperation of the baffle and the push plate, the grinding block can grind the main journals and connecting rod journals of different lengths 360 degrees. The polishing device can be well adapted to crankshafts of different models, so that the main journals and connecting rod journals of crankshafts of different models can be completely polished.

[0019] Furthermore, since the first grinding component and the second grinding component are provided, the polishing device can polish the main journal and the connecting rod journal on the crankshaft body at the same time, and there is no need to polish the journals on a crankshaft one by one, thereby improving the working efficiency of grinding and polishing, saving working time, and being able to greatly increase the output of crankshafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 A schematic structural diagram of a polishing device for crankshaft machining provided by an embodiment of the present invention;

[0022] Figure 2A schematic diagram of the partial structure of a polishing device for crankshaft machining provided by an embodiment of the present invention;

[0023] Figure 3 A first state diagram of a polishing device for crankshaft machining provided by an embodiment of the present invention;

[0024] Figure 4 A second state diagram of a crankshaft polishing device provided by an embodiment of the present invention;

[0025] Figure 5 A third state diagram of a crankshaft polishing device provided by an embodiment of the present invention;

[0026] Figure 6 An exploded view of a first grinding assembly provided by an embodiment of the present invention;

[0027] Figure 7 A transverse cross-sectional view of a grinding block provided by an embodiment of the present invention;

[0028] Figure 8 A longitudinal cross-sectional view of a grinding block provided by an embodiment of the present invention;

[0029] Fig. 9 for Figure 7 The enlarged view of point A in the middle;

[0030] Fig.10 A schematic diagram of the structure of a slide plate provided in an embodiment of the present invention Figure 1 ;

[0031] Fig.11 A schematic diagram of the structure of a slide plate provided in an embodiment of the present invention Figure 2 ;

[0032] Fig.12 A schematic structural diagram of a slider provided in an embodiment of the present invention.

[0033] In the figure: 1, base; 2, stand; 3, stand plate; 4, first motor; 5, coupling; 6, chuck; 7, movable plate; 8, support frame; 9, slide plate; 10, adjustment assembly; 101, slider; 102, second screw rod; 103, through hole; 104, first rotating rod; 105, second rotating rod; 106, first grinding assembly; 1061, connecting seat; 1062, plug rod; 1063, sleeve; 1064, first spring; 1065, grinding block; 1066, baffle; 1067, pressure block; 1068 , moving block; 1069, second spring; 10610, pressure rod; 10611, insert block; 10612, third spring; 10613, limit plate; 10614, fourth spring; 107, second grinding assembly; 108, slide groove; 11, bracket; 12, second motor; 13, gear; 14, first screw; 15, transmission belt; 16, first electric push rod; 17, connecting plate; 18, second electric push rod; 19, connecting column; 20, rotating shaft; 21, rotating belt; 22, push plate; 23, crankshaft body. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0035] See also Figure 1-Figure 12 The embodiment of the present invention provides a technical solution: a polishing device for crankshaft processing, comprising an L-shaped base 1, a first driving mechanism is provided on the upper surface of the horizontal end of the base 1, and a crankshaft body 23 is clamped between the first driving mechanism, a support frame 8 is movably provided on the vertical end of the base 1, the support frame 8 is parallel to the horizontal end of the base 1, and a second driving mechanism is provided on the base 1 to drive the support frame 8 to move up and down;

[0036] Slide plates 9 are slidably provided on the upper and lower opposite side walls of the support frame 8, and an adjustment assembly 10 is slidably provided inside the slide plates 9. Rotating shafts 20 are provided at both ends of the opposite side walls of the two slide plates 9, and a rotating belt 21 is rotatably connected between the two rotating shafts 20 arranged along the length direction of the slide plates 9, and a push plate 22 is fixedly connected to the outer wall of the rotating belt 21. A bracket 11 and two meshing gears 13 are provided on the upper wall of the slide plate 9 located at the upper end of the support frame 8, and the lower ends of the two gears 13 are fixedly connected to the corresponding rotating shafts 20. The upper surface of the bracket 11 located at the upper end of one of the gears 13 is fixedly connected to a second motor 12, and the output end of the second motor 12 is fixedly connected to the gear 13, and a connecting column 19 is fixedly connected between the rotating shafts 20 at the upper and lower ends;

[0037] The adjusting assembly 10 includes a slider 101 slidably connected to the slide plate 9, a second screw 102 is rotatably connected to the slide plate 9, a slide groove 108 is provided on the upper surface of the slide plate 9 along the length direction, and the other end of the slider 101 is fixedly connected to the first grinding assembly 106 and the second grinding assembly 107 in sequence through the slide groove 108.

[0038] Specifically, before use, the crankshaft body 23 is clamped by the first driving mechanism, and the slide plate 9 is adjusted to the corresponding position according to different crankshafts, and then the spacing between the first grinding assembly 106 and the second grinding assembly 107 is adjusted by the adjusting assembly 10, and then the support frame 8 and the first grinding assembly 106 and the second grinding assembly 107 on one side are adjusted by the second driving mechanism. When the first grinding assembly 106 and the second grinding assembly 107 are in contact with the crankshaft body 23, the second motor 12 is turned on, and the push plate 22 cooperates with the first grinding assembly 106 and the second grinding assembly 107 to grind different positions on the main journal and connecting rod journal of the crankshaft body 23. The first grinding assembly 106 and the second grinding assembly 107 on the upper and lower sides have different grinding coarsenesses. The main journal and connecting rod journal of the crankshaft body 23 are first polished by a coarser grinding assembly, and then polished with a finer grinding assembly, so that the polishing effect of the crankshaft body 23 is better.

[0039] In another embodiment provided by the present invention, the first driving mechanism includes a stand 2 and a vertical plate 3 integrally formed on the upper surface of the horizontal end of the base 1, and a first motor 4 is bolted to the upper end of the stand 2, a movable plate 7 is slidably connected to the side of the upper surface of the base 1 away from the vertical plate 3, and a first electric push rod 16 is fixedly connected between the side wall of the movable plate 7 and the base 1, a connecting shaft 5 is fixedly connected to the output end of the first motor 4, and the other end of the connecting shaft 5 is movably inserted in the vertical plate 3, and the other end of the connecting shaft 5 extending to the vertical plate 3 is fixedly connected to a chuck 6, the inner wall of the movable plate 7 is rotatably connected to the chuck 6, and a crankshaft body 23 is clamped between the two chucks 6, and the second driving mechanism includes a connecting plate 17 fixedly connected to the inner wall of the vertical end of the base 1, and a support frame 8 is provided at the bottom of the connecting plate 17, and a second electric push rod 18 is fixedly connected between the support frame 8 and the connecting plate 17.

[0040] Specifically, before polishing, the crankshaft body 23 is clamped by the chuck 6 set on the side wall of the vertical plate 3, and then the first electric push rod 16 is started to move the movable plate 7 toward the vertical plate 3 to clamp and fix the crankshaft body 23, and then the support frame 8 and the corresponding first grinding assembly 106 and second grinding assembly 107 are fitted to the crankshaft through the second electric push rod 18.

[0041] In another embodiment of the present invention, one end of the slide plate 9 located inside the support frame 8 is threadedly connected to a first screw rod 14 , and a transmission belt 15 is rotatably connected between two first screw rods 14 extending to the side walls outside the support frame 8 .

[0042] Specifically, by screwing the first screw rod 14, the upper and lower slide plates 9 are adjusted to corresponding positions.

[0043] In another embodiment provided by the present invention, a slider 101 in the skateboard 9 close to the first motor 4 is fixedly connected to the inner wall of the skateboard 9, and the side walls of the slider 101 in the middle are provided with through holes 103, the slider 101 at the other end of the skateboard 9 is threadedly connected to the second screw rod 102, and the slider 101 is rotatably connected to the first rotating rod 104 and the second rotating rod 105, and the first rotating rod 104 and the second rotating rod 105 are rotatably connected.

[0044] Specifically, the second screw rod 102 can be turned to move the slider 101 away from the first motor 4, thereby driving the slider 101 in the middle to move, so as to adapt to different types of crankshafts.

[0045] In another embodiment provided by the present invention, the first grinding component 106 includes a sleeve 1063 fixedly connected to the upper end of the slider 101, an insertion rod 1062 is movably inserted in the sleeve 1063, and a first spring 1064 is fixedly connected between the bottom end of the insertion rod 1062 and the sleeve 1063, a connecting seat 1061 is fixedly connected to the upper end of the insertion rod 1062, and a grinding block 1065 is slidably connected to the upper end of the connecting seat 1061, and the second grinding component 107 includes a connecting seat 1061 fixedly connected to the upper end of the slider 101, a grinding block 1065 is slidably connected to the upper end of the connecting seat 1061, and the distance from the connecting rod journal to the main journal of the crankshaft body 23 is less than half of the grinding block 1065.

[0046] Specifically, the first grinding assembly 106 is used to grind and polish the connecting rod journal. Since a first spring 1064 is provided and the distance from the connecting rod journal of the crankshaft body 23 to the main journal is less than half of the grinding block 1065, the connecting rod journal can be grinded and polished 360 degrees when it rotates. Since the main journal does not move up and down, the second grinding assembly 107 can grind it.

[0047] In another embodiment provided by the present invention, a baffle 1066 is movably inserted in the grinding block 1065, and a pressure block 1067 is movably inserted at both ends of the grinding block 1065 along the width direction. A moving block 1068 is fixedly connected to the two opposite side walls of the pressure block 1067. A second spring 1069 is fixedly connected between the moving block 1068 and the grinding block 1065. A pressure rod 10610 is fixedly connected to one side wall of the pressure block 1067, and the pressure rod 10610 is movably inserted. It is movably inserted in the grinding block 1065, and the baffle 1066 is movably inserted with an insert block 10611 on the side wall close to the pressure rod 10610, and a third spring 10612 is fixedly connected between the insert block 10611 and the baffle 1066; a limit plate 10613 is movably inserted in the grinding block 1065, and one end of the limit plate 10613 is fixedly connected to the baffle 1066, and a fourth spring 10614 is fixedly connected between the limit plate 10613 and the grinding block 1065.

[0048] Specifically, when the second motor 12 is started, it will drive the two gears 13 to rotate, and the rotating shaft 20 arranged on both sides of the skateboard 9 will drive the rotating belt 21 and the push plate 22 to rotate. When the push plate 22 drives the longer end of the baffle 1066 to move, the grinding block 1065 will be moved in the direction away from the plug block 10611. When the pressure block 1067 is squeezed by the crank, the pressure block 1067 will squeeze the baffle 1066 to move, so that the plug block 10611 is located in the groove where the pressure rod 10610 is located, and the grinding block 1065 will move in the opposite direction through the push plate 22 on the other side. When the pressure block 1067 on the other side of the grinding block 1065 is squeezed, the pressure rod 10610 will be squeezed inward, and the plug block 10611 will be squeezed out of the groove. Under the action of the fourth spring 10614, the baffle 1066 will move back to its original position, and the grinding block 1065 will move to the opposite position.

[0049] In another embodiment provided by the present invention, a plurality of push plates 22 are provided, and the plurality of push plates 22 are distributed at equal intervals.

[0050] In another embodiment provided by the present invention, a plurality of sliders 101 are provided, and the plurality of sliders 101 are distributed at equal intervals, and the length of the first rotating rod 104 is half of the length of the second rotating rod 105 .

[0051] In another embodiment provided by the present invention, both ends of the baffle 1066 are provided with a trapezoidal structure, and the length of the baffle 1066 extending from one end away from the pressure rod 10610 to the outside of the grinding block 1065 is greater than the length of the other end of the baffle 1066 extending to the outside of the grinding block 1065.

[0052] Specifically, the baffle 1066 can be automatically driven by the push plate 22 to work at the beginning.

[0053] Working principle: Before use, the crankshaft body 23 is clamped by the chuck 6 set on the side wall of the vertical plate 3, and then the first electric push rod 16 is started to move the movable plate 7 toward the vertical plate 3 to clamp and fix the crankshaft body 23. By turning the first screw rod 14, the upper and lower slide plates 9 are adjusted to the corresponding positions. By turning the second screw rod 102, the slider 101 away from the first motor 4 can be moved, thereby driving the middle slider 101 to move, so as to adapt to different types of crankshafts, and then the support frame 8 and the corresponding first grinding assembly 106 and the second grinding assembly are moved by the second electric push rod 18. The grinding assembly 107 is fitted with the crankshaft, and the second motor 12 is turned on. The push plate 22 cooperates with the first grinding assembly 106 and the second grinding assembly 107 to grind different positions on the main journal and the connecting rod journal of the crankshaft body 23. The first grinding assembly 106 and the second grinding assembly 107 located on the upper and lower sides have different grinding coarsenesses. The main journal and the connecting rod journal of the crankshaft body 23 are firstly polished by a coarser grinding assembly, and then polished by a finer grinding assembly, so that the polishing effect of the crankshaft body 23 is better. The first grinding assembly 106 is used to grind and polish the connecting rod journal. A first spring 1064 is provided, and the distance from the connecting rod journal of the crankshaft body 23 to the main journal is less than half of the grinding block 1065. When the connecting rod journal rotates, it can be polished 360 degrees. Since the main journal does not move up and down, the second grinding assembly 107 can grind it. When the second motor 12 is started, it will drive the two gears 13 to rotate, and the rotating shaft 20 set on both sides of the slide plate 9 will drive the belt 21 and the push plate 22 to rotate. When the push plate 22 drives the longer end of the baffle 1066 to move, the grinding block 1065 will be moved away from the plug block 1061. 1, when the pressure block 1067 is squeezed by the crank, the pressure block 1067 will squeeze the baffle 1066 to move, so that the insert block 10611 is located in the groove where the pressure rod 10610 is located, and the grinding block 1065 will move in the opposite direction through the push plate 22 on the other side. When the pressure block 1067 on the other side of the grinding block 1065 is squeezed, the pressure rod 10610 will be squeezed inward, and the insert block 10611 will be squeezed out of the groove. Under the action of the fourth spring 10614, the baffle 1066 will move back to its original position, and the grinding block 1065 will move to the opposite position.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A polishing device for crankshaft machining, comprising a base (1) of an L-shaped structure, characterized in that: A first driving mechanism is provided on the upper surface of the horizontal end of the base (1), and a crankshaft body (23) is clamped between the first driving mechanisms; a support frame (8) is movably provided on the vertical end of the base (1), the support frame (8) and the horizontal end of the base (1) are parallel to each other, and a second driving mechanism for driving the support frame (8) to move up and down is provided on the base (1); The upper and lower opposite side walls of the support frame (8) are slidably provided with slide plates (9), and an adjustment component (10) is slidably provided inside the slide plate (9). Two opposite side walls of the two slide plates (9) are provided with rotating shafts (20), and a rotating belt (21) is rotatably connected between the two rotating shafts (20) arranged along the length direction of the slide plate (9), and a push plate (22) is fixedly connected to the outer wall of the rotating belt (21). The upper wall of the slide plate (9) located at the upper end of the support frame (8) is provided with a bracket (11) and two meshing gears (13), and the lower ends of the two gears (13) are fixedly connected to the corresponding rotating shafts (20). The upper surface of the bracket (11) located at the upper end of one of the gears (13) is fixedly connected to a second motor (12), and the output end of the second motor (12) is fixedly connected to the gear (13), and a connecting column (19) is fixedly connected between the rotating shafts (20) at the upper and lower ends; The adjusting assembly (10) comprises a sliding block (101) slidably connected to a sliding block (9), a second screw rod (102) being rotatably connected to the sliding block (9), a sliding groove (108) being provided on the upper surface of the sliding block (9) along the length direction, and the other end of the sliding block (101) is fixedly connected to a first grinding assembly (106) and a second grinding assembly (107) in sequence through the sliding groove (108); One end of the slide plate (9) located inside the support frame (8) is threadedly connected to a first screw rod (14), and two first screw rods (14) extend to the side walls outside the support frame (8) and are rotatably connected to a transmission belt (15); The slider (101) in the slide plate (9) near the first motor (4) is fixedly connected to the inner wall of the slide plate (9), and the side walls of the slider (101) in the middle are provided with through holes (103). The slider (101) in the slide plate (9) at the other end is threadedly connected to the second screw rod (102), and the slider (101) is rotatably connected to the first rotating rod (104) and the second rotating rod (105), and the first rotating rod (104) and the second rotating rod (105) are rotatably connected to each other; The first grinding component (106) comprises a sleeve (1063) fixedly connected to the upper end of the slider (101), an insertion rod (1062) is movably inserted in the sleeve (1063), and a first spring (1064) is fixedly connected between the bottom end of the insertion rod (1062) and the sleeve (1063), a connecting seat (1061) is fixedly connected to the upper end of the insertion rod (1062), and a grinding block (1065) is slidably connected to the upper end of the connecting seat (1061), and the second grinding component (107) comprises a connecting seat (1061) fixedly connected to the upper end of the slider (101), a grinding block (1065) is slidably connected to the upper end of the connecting seat (1061), and the distance from the connecting rod journal to the main journal of the crankshaft body (23) is less than half of the grinding block (1065); A baffle (1066) is movably inserted in the grinding block (1065), and pressure blocks (1067) are movably inserted at both ends of the grinding block (1065) in the width direction. Moving blocks (1068) are fixedly connected to two opposite side walls of the pressure block (1067), and a second spring (1069) is fixedly connected between the moving block (1068) and the grinding block (1065). A pressure rod (10610) is fixedly connected to one side wall of the pressure block (1067), and the pressure rod (10610) is movably inserted in the grinding block ( 1065), a plug block (10611) is movably inserted into the side wall of the baffle (1066) close to the pressure rod (10610), a third spring (10612) is fixedly connected between the plug block (10611) and the baffle (1066), a limit plate (10613) is movably inserted into the grinding block (1065), and one end of the limit plate (10613) is fixedly connected to the baffle (1066), and a fourth spring (10614) is fixedly connected between the limit plate (10613) and the grinding block (1065); Both ends of the baffle (1066) are provided with a trapezoidal structure, and the length of the baffle (1066) extending from one end away from the pressure rod (10610) to the outside of the grinding block (1065) is greater than the length of the other end of the baffle (1066) extending to the outside of the grinding block (1065).

2. A crankshaft polishing device according to claim 1, characterized in that: The first driving mechanism comprises a stand (2) and a stand plate (3) integrally formed on the upper surface of the horizontal end of the base (1), and a first motor (4) is bolted to the upper end of the stand (2), a movable plate (7) is slidably connected to the side of the upper surface of the base (1) away from the stand plate (3), and a first electric push rod (16) is fixedly connected between the side wall of the movable plate (7) and the base (1), a connecting shaft (5) is fixedly connected to the output end of the first motor (4), and the other end of the connecting shaft (5) is movably plugged into the stand plate (3). The connecting shaft (5) extends to the other end of the vertical plate (3) and is fixedly connected to a chuck (6); the inner wall of the movable plate (7) is rotatably connected to the chuck (6); a crankshaft body (23) is clamped between the two chucks (6); the second driving mechanism includes a connecting plate (17) fixedly connected to the inner wall of the vertical end of the base (1); a support frame (8) is provided at the bottom of the connecting plate (17); a second electric push rod (18) is fixedly connected between the support frame (8) and the connecting plate (17).

3. A crankshaft polishing device according to claim 1, characterized in that: A plurality of the push plates (22) are provided, and the plurality of the push plates (22) are distributed at equal intervals.

4. A crankshaft polishing device according to claim 1, characterized in that: A plurality of the sliders (101) are provided, and the sliders (101) are distributed at equal intervals, and the length of the first rotating rod (104) is half of the length of the second rotating rod (105).

Images