Device and method for grinding rotating surface of crankshaft of general gasoline engine

Abstract

The invention relates to the technical field of crankshaft grinding, and provides a general gasoline engine crankshaft rotating face grinding device and method.The general gasoline engine crankshaft rotating face grinding device comprises a workbench, a machine base, a sliding base, a grinding wheel, a first connecting piece, a second connecting piece, an elastic clamping plate, an air cylinder, a side baffle and a connecting assembly, and the machine base is arranged on the workbench and used for clamping a crankshaft and driving the crankshaft to rotate; the sliding base is arranged on the workbench in a sliding mode and located on one side of the machine base, and the air cylinder is arranged on the sliding base. According to the crankshaft rotating surface grinding device, the elastic clamping plate is arranged to clamp the first connecting piece and the second connecting piece, the second connecting piece can be separated from the first connecting piece, then the grinding wheel can be separated from the sliding base, the separated grinding wheel can be carried and transported by the connecting assembly, and therefore the grinding wheel can be moved between the sliding base and the machine base; and the grinding wheel is moved to one side of the machine base, so that the grinding wheel can be conveniently replaced after being abraded, and the grinding machine is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of crankshaft grinding, and in particular to a device and method for grinding the rotating surface of a crankshaft of a general purpose machine. Background Art

[0002] The production and processing of general-purpose crankshafts involves surface grinding, primarily for the main and connecting rod journals. Rotating surface grinding for general-purpose crankshafts involves grinding the connecting rod diameter. Grinding the connecting rod diameter improves the crankshaft's surface finish, roundness, and fatigue life. Existing grinding equipment for general-purpose crankshaft rotating surfaces typically utilizes CNC grinding, online detection, and adaptive compensation technologies to achieve high-precision, automated machining of the crankshaft's rotating surface.

[0003] Invention publication number CN101837559A proposes a crankshaft grinding method comprising: rotating the crankshaft about its center of rotation, and moving the center of rotation of the grinding wheel according to a predetermined motion trajectory curve, such that the high point of the grinding wheel always grinds the high point of the connecting rod journal. However, conventional grinding devices for the rotating surface of a crankshaft are usually performed on a processing table. In addition to the grinding wheel device for crankshaft grinding, they also include a clamping structure for clamping the crankshaft and carrying it for rotation. During the specific implementation of crankshaft surface grinding, the grinding wheel will wear over time. To ensure the grinding accuracy of the grinding wheel, it is necessary to regularly replace the grinding wheel. However, in order to ensure the convenience of users in loading the crankshaft, the clamping structure of the crankshaft is usually located outside the processing table, while the grinding wheel grinding device of the crankshaft is located in the middle of the processing table. The grinding wheel located in the middle of the processing table is blocked by the crankshaft and the clamping structure of the crankshaft, and the grinding wheel is connected to the driving device of the grinding wheel, which makes it inconvenient to replace the grinding wheel during the actual replacement process. Therefore, this solution specially proposes a general crankshaft rotating surface grinding device and method to solve the above problems. Summary of the Invention

[0004] In view of this, the present invention proposes a device and method for grinding the rotating surface of a crankshaft of a general machine, which is used to solve the technical problem that the grinding wheel located in the middle of the existing processing table is blocked by the crankshaft and the clamping structure of the crankshaft, and the grinding wheel is connected to the driving device of the grinding wheel, which makes it inconvenient to replace the grinding wheel during the actual replacement process.

[0005] The technical solution of the present invention is achieved as follows: The present invention provides a crankshaft rotating surface grinding device for a general machine, comprising a workbench, a machine base, a sliding seat, a grinding wheel, a first connecting member, a second connecting member, an elastic clamping plate, a cylinder, a side baffle and a connecting assembly, wherein:

[0006] a machine base, arranged on the workbench, for clamping the crankshaft and driving the crankshaft to rotate;

[0007] A sliding seat is slidably arranged on the workbench and located on one side of the machine base. The cylinder is arranged on the sliding seat. The sliding seat is used to slide in the extension direction of the machine base clamping the crankshaft, and the telescopic end of the cylinder is telescopic in the direction of approaching or moving away from the machine base.

[0008] A first connecting member is provided on the telescopic end of the cylinder, and a second connecting member is slidably connected to a side of the first connecting member away from the cylinder, and a grinding wheel is rotatably provided on a side of the second connecting member away from the first connecting member, and the grinding wheel is used for grinding the crankshaft;

[0009] an elastic clamping plate, provided on the second connecting member and clamped with the first connecting member;

[0010] a side baffle, disposed on one side of the sliding seat, wherein when the telescopic end of the cylinder contracts, the side baffle presses the elastic clamping plate and causes the elastic clamping plate to separate from the first connecting member;

[0011] The connecting assembly is used to connect the first connecting member and drive the first connecting member to move.

[0012] Based on the above technical solution, preferably, a plug-in slot is provided on the first connecting member, the plug-in slot is connected to the top of the first connecting member, the second connecting member is plugged into the inner side of the plug-in slot, and can only slide upward along the plug-in slot to detach from the first connecting member.

[0013] On the basis of the above technical solution, preferably, the elastic card includes a clamping end and a connecting end, a clamping slot is provided on the first connecting member, the clamping end is inserted into the inner side of the clamping slot, the contact surface between the clamping end and the clamping slot is a plane, the side surface of the clamping end away from the clamping slot is a slope, and the side baffle is used to squeeze the connecting end toward the side close to the second connecting member.

[0014] On the basis of the above technical solution, preferably, the connecting assembly includes a conveyor belt, a slide bar and a slider, wherein:

[0015] a conveyor belt rotatably disposed on the workbench, with two ends of the conveyor belt respectively located on opposite sides of the sliding seat, and a first tooth groove being formed on the conveyor belt;

[0016] A sliding rod is arranged on one side of the second connecting member, and the slider is arranged at the end of the sliding rod. A second tooth groove is provided on the slider. When the cylinder contracts, the slider engages with the conveyor belt. When the slider engages with the conveyor belt, the elastic clip disengages from the first connecting member, and the slider slides in the rotation direction of the conveyor belt.

[0017] On the basis of the above technical solution, preferably, it further includes a rectangular frame, wherein:

[0018] A frame is fixed relative to the sliding seat, a first sliding ring groove is formed on the frame, and a second sliding ring groove is formed inside the first sliding ring groove, the first sliding ring groove and the second sliding ring groove are both connected to one side of the frame, the sliding rod passes through the first sliding ring groove, and the slider is slidably connected to the inner side of the second sliding ring groove;

[0019] A matching ring groove is further provided on the inner side of the rectangular frame. The matching ring groove is communicated with the second sliding ring groove. The conveyor belt is rotatably arranged on the inner side of the matching ring groove.

[0020] Based on the above technical solution, preferably, the conveyor belt includes two longitudinal transmission segments and two transverse transmission segments, the slider is connected to the conveyor belt at the longitudinal transmission segment, and the length of the longitudinal transmission segment is greater than the height of the second connecting member.

[0021] On the basis of the above technical solution, preferably, it further includes a driving wheel and a second driving motor, wherein,

[0022] A plurality of driving wheels are rotatably arranged on the inner side of the frame for driving the conveyor belt to rotate, and the second driving motor is arranged on one side of the frame for driving the plurality of driving wheels to rotate.

[0023] On the basis of the above technical solution, preferably, it further includes a gantry, wherein,

[0024] A gantry is arranged on the workbench, and the sliding seat is slidably arranged on the gantry, and the conveyor belt passes between the two ends of the gantry.

[0025] On the basis of the above technical solution, preferably, it further includes a mounting body and a first drive motor, wherein,

[0026] A mounting body is provided on the second connecting member, and a protective groove is formed on the mounting body, the protective groove being connected to two adjacent sides of the mounting body, the grinding wheel being rotatably provided inside the protective groove and extending out of the mounting body;

[0027] The first driving motor is arranged on the mounting body and is used for driving the grinding wheel to rotate.

[0028] The present invention also provides a method for grinding the rotating surface of a crankshaft of a general machine, which is completed by the above-mentioned rotating surface grinding device of the crankshaft of a general machine, and further includes the following steps:

[0029] S1. Clamp the crankshaft on the machine base, drive the crankshaft to rotate through the machine base, drive the grinding wheel to move along the crankshaft through the sliding seat, and drive the cylinder to extend and retract within a certain distance, so that the rotating surface of the crankshaft is ground by the grinding wheel;

[0030] S2. When the grinding wheel needs to be replaced due to wear, the cylinder is regulated to retract by more than one interval. At this time, the side baffle presses the elastic clamping plate and separates the elastic clamping plate from the first connecting member, and the connecting assembly is connected to the second connecting member;

[0031] S3, driving the second connecting member to move to the side of the workbench away from the machine base through the connecting assembly;

[0032] S4. Replace the grinding wheel on one side of the workbench if it is worn.

[0033] The crankshaft rotating surface grinding device and method of the present invention have the following advantages over the prior art:

[0034] (1) By regulating the cylinder to contract by more than one inter-segment distance, the first connecting member is disengaged from the second connecting member, and the connecting member is connected to the second connecting member through the connecting assembly, and the second connecting member is driven by the connecting assembly to move to the side of the workbench away from the machine base, so as to facilitate the wear and replacement of the grinding wheel connected to the second connecting member. The crankshaft rotating surface grinding device of the present application is provided with an elastic clamping plate to clamp the first connecting member and the second connecting member, so that the second connecting member can be disengaged from the first connecting member, and then the grinding wheel can be disengaged from the sliding seat. The disengaged grinding wheel can be carried and transported by the connecting assembly, so that the grinding wheel can be moved from between the sliding seat and the machine base to the side of the workbench away from the machine base. By moving the grinding wheel to one side of the machine base, the wear and replacement of the grinding wheel is facilitated, and it is convenient to use.

[0035] (2) The slider is plugged into the conveyor belt during sliding and meshes with the conveyor belt. By setting the conveyor belt and the conveyor belt being a circular rotating structure, the rotating conveyor belt can carry the slider to the side of the workbench away from the machine base, and then carry the grinding wheel to move, which is convenient for connecting the grinding wheel and adjusting the displacement of the grinding wheel. Specifically, when adjusting the cylinder contraction, the slider slides from one side of the frame into the interior of the second sliding ring groove. The frame is set to limit the slider, so that when the conveyor belt is meshed with the slider, the slider can only move circumferentially along the second sliding ring groove, and then the conveyor belt can continue to mesh with the slider during the movement of the slider, thereby improving the stability of the slider displacement and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A sitting perspective view of the crankshaft rotating surface grinding device of the present invention;

[0038] Figure 2 A right perspective view of the crankshaft rotating surface grinding device of the present invention;

[0039] Figure 3 A rear perspective view of the crankshaft rotating surface grinding device of the present invention;

[0040] Figure 4 This is a formal view of the crankshaft rotating surface grinding device of the present invention;

[0041] Figure 5 It is a three-dimensional schematic diagram of the structure of the frame of the crankshaft rotating surface grinding device of the present invention;

[0042] Figure 6 The present invention is a general crankshaft rotating surface grinding device Figure 5 a front view of the structure shown;

[0043] Figure 7 The present invention is a general crankshaft rotating surface grinding device Figure 6 A cross-sectional view of the structure at AA is shown;

[0044] Figure 8 The present invention is a general crankshaft rotating surface grinding device Figure 7 An enlarged schematic diagram of point B is shown;

[0045] Figure 9 A schematic cross-sectional view of the connection between the bracket and the slider of the crankshaft rotating surface grinding device of the present invention;

[0046] Figure 10 Schematic diagram of the connection between the first connecting member and the second connecting member of the crankshaft rotating surface grinding device of the present invention;

[0047] Figure 11 A perspective schematic diagram of a first connecting member of the crankshaft rotating surface grinding device for a general purpose machine according to the present invention;

[0048] Figure 12 It is a three-dimensional schematic diagram of the conveyor belt of the crankshaft rotating surface grinding device of the present invention.

[0049] In the figure: 1. workbench; 2. machine base; 21. headstock; 22. tailstock; 31. sliding seat; 32. gantry; 41. mounting body; 411. protective groove; 42. grinding wheel; 43. first drive motor; 51. first connecting member; 511. clamping groove; 512. plug-in groove; 52. second connecting member; 53. elastic clamping plate; 531. clamping end; 532. connecting end; 54. cylinder; 55. side baffle; 6. connecting assembly; 61. conveyor belt; 611. first tooth groove; 612. longitudinal transmission section; 613. transverse transmission section; 62. slide bar; 63. slide block; 631. second tooth groove; 71. frame; 711. first sliding ring groove; 712. second sliding ring groove; 713. matching ring groove; 72. driving wheel; 73. second drive motor. DETAILED DESCRIPTION

[0050] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] like Figures 1 to 12 As shown, the present invention is a general crankshaft rotating surface grinding device, which is characterized by comprising a workbench 1, a machine base 2, a sliding seat 31, a grinding wheel 42, a first connecting member 51, a second connecting member 52, an elastic clamping plate 53, a cylinder 54, a side baffle 55 and a connecting assembly 6, wherein the machine base 2 is arranged on the workbench 1, and is used to clamp the crankshaft and drive the crankshaft to rotate; the sliding seat 31 is slidably arranged on the workbench 1 and is located on one side of the machine base 2, and the cylinder 54 is arranged on the sliding seat 31, and the sliding seat 31 is used to slide in the extension direction of the machine base 2 clamping the crankshaft, and the telescopic end of the cylinder 54 is telescopic in the direction of approaching or moving away from the machine base 2; the first connecting member The part 51 is arranged on the telescopic end of the cylinder 54, and the second connecting part 52 is slidably connected to the side of the first connecting part 51 away from the cylinder 54. The grinding wheel 42 is rotatably arranged on the side of the second connecting part 52 away from the first connecting part 51, and the grinding wheel 42 is used to grind the crankshaft; the elastic clip 53 is arranged on the second connecting part 52 and is clamped with the first connecting part 51; the side baffle 55 is arranged on one side of the sliding seat 31. When the telescopic end of the cylinder 54 contracts, the side baffle 55 squeezes the elastic clip 53 and makes the elastic clip 53 separate from the first connecting part 51; the connecting assembly 6 is used to connect the first connecting part 51 and drive the first connecting part 51 to move.

[0052] In a specific implementation, the first connecting member 51 and the second connecting member 52 are both square plates, and the ends of the first connecting member 51 and the second connecting member 52 are aligned, and the height of the second connecting member 52 is slightly lower than the height of the first connecting member 51. By aligning the ends of the first connecting member 51 and the second connecting member 52, the elastic clip 53 is facilitated to be clamped.

[0053] The elastic clamping plate 53 is a self-deformable elastic plastic plate or metal plate.

[0054] Preferably, the side baffle 55 is a square plate, and a plane on one side of the side baffle 55 is used to contact the elastic clamping plate 53 .

[0055] In a specific implementation, a maintenance area is extended from one side of the workbench 1. When the grinding wheel 42 needs to be maintained, the grinding wheel 42 is driven by the connecting component 6 to move to the maintenance area for maintenance.

[0056] By setting up a maintenance area, it is convenient for the user to perform maintenance and replacement of the grinding wheel 42 in a certain area. At the same time, the maintenance area can selectively accommodate other components in addition to the grinding wheel 42. The guard area is from workbench 1 One side is protruding, which is convenient for users to locate and perform maintenance. The occupied space can be kept as small as possible to reduce design costs.

[0057] In a specific implementation, the machine base 2 includes a headstock 21 and a tailstock 22 , the crankshaft is clamped between the headstock 21 and the tailstock 22 , and the crankshaft is driven to rotate by the headstock 21 .

[0058] In the specific implementation, the crankshaft is clamped on the machine base 2, the crankshaft is driven to rotate by the machine base 2, the grinding wheel 42 is driven to move along the crankshaft by the sliding seat 31, and the cylinder 54 is driven to extend and retract at a distance of one internode, and the grinding process of the rotating surface of the crankshaft is completed by the grinding wheel 42. When the grinding wheel 42 needs to be worn and replaced, the cylinder 54 is adjusted to shrink more than a distance of one internode. At this time, the side baffle 55 presses the elastic clip 53 and makes the elastic clip 53 disengage from the first connecting member 51. The connecting component 6 is connected to the second connecting member 52, and the second connecting member 52 is driven by the connecting component 6 to move to the side of the workbench 1 away from the machine base 2 to facilitate the wear and replacement of the grinding wheel 42 connected to the second connecting member 52.

[0059] The crankshaft rotating surface grinding device of the present application is configured to clamp the first connecting member 51 and the second connecting member 52 by providing an elastic clamping plate 53, so that the second connecting member 52 can be detached from the first connecting member 51, and then the grinding wheel 42 can be detached from the sliding seat 31. The detached grinding wheel 42 can be carried and transported by the connecting component 6, so that the grinding wheel 42 can be moved from between the sliding seat 31 and the machine base 2 to the side of the workbench 1 away from the machine base 2. By moving the grinding wheel 42 to one side of the machine base 2, it is convenient to replace the grinding wheel 42 after wear, and it is convenient to use.

[0060] As a preferred embodiment, a plug-in slot 512 is provided on the first connecting member 51, and the plug-in slot 512 is connected to the top of the first connecting member 51. The second connecting member 52 is plugged into the inner side of the plug-in slot 512 and can only slide upward along the plug-in slot 512 to disengage from the first connecting member 51.

[0061] Specifically, when the second connector 52 is inserted into the insertion slot 512 , the slot wall of the insertion slot 512 blocks and limits the second connector 52 from the front and one side, and the other side is blocked and locked by the elastic clamping plate 53 .

[0062] With this design, when the second connecting member 52 is connected to the first connecting member 51, the connecting member 52 is inserted into the inside of the plug-in slot 512. The slot wall of the plug-in slot 512 can increase the connection stability between the second connecting member 52 and the first connecting member 51 and reduce the positioning burden of the elastic clip 53.

[0063] The elastic card plate 53 includes a clamping end 531 and a connecting end 532. A clamping slot 511 is provided on the first connecting member 51. The clamping end 531 is inserted into the inner side of the clamping slot 511. The contact surface between the clamping end 531 and the clamping slot 511 is a plane. The side of the clamping end 531 away from the clamping slot 511 is an inclined surface. The side baffle 55 is used to squeeze the connecting end 532 toward the side close to the second connecting member 52.

[0064] In a specific embodiment, the elastic clamping plate 53 is tilted relative to the first connecting member 51 and the second connecting member 52, and the connecting end 532 is further away from the connecting members than the clamping end 531. In this way, when the cylinder 54 contracts, the side baffle 55 can first contact the connecting end 532 and cause the elastic clamping plate 53 to deform and bend.

[0065] This design allows the elastic clamping plate 53 to be deformed while moving along a straight line, and then after the movement is in place, the elastic clamping plate 53 can be disengaged to achieve the cylinder 54 Adjustable grinding wheel 42 moving grinding At the same time, the elastic clamping plate 53 can be adjusted to achieve the desired effect of automatic clamping and disengagement. point.

[0066] As a preferred embodiment, the connecting assembly 6 includes a conveyor belt 61, a slide rod 62 and a slider 63, wherein the conveyor belt 61 is rotatably set on the workbench 1, and the two ends of the conveyor belt 61 are respectively located on opposite sides of the sliding seat 31, and a first tooth groove 611 is provided on the conveyor belt 61; the slide rod 62 is set on one side of the second connecting member 52, and the slider 63 is set at the end of the slide rod 62, and a second tooth groove 631 is provided on the slider 63. When the cylinder 54 contracts, the slider 63 engages with the conveyor belt 61. When the slider 63 engages with the conveyor belt 61, the elastic clip 53 disengages from the first connecting member 51, and the slider 63 slides in the rotation direction of the conveyor belt 61.

[0067] In a specific implementation, the conveyor belt 61 is transported in a rectangular shape, and the conveyor belt 61 includes two longitudinal transmission sections 612 and two transverse transmission sections 613 . The slider 63 is connected to the conveyor belt 61 at the longitudinal transmission section 612 , and the length of the longitudinal transmission section 612 is greater than the height of the second connecting member 52 .

[0068] Since when adjusting the movement of the second connecting member 52, it is first necessary to adjust the second connecting member 52 to slide out of the plug-in slot 512, by setting the length of the longitudinal transmission section 612 to be greater than the height of the second connecting member 52, so that when the second connecting member 52 is connected to the conveyor belt 61 at the longitudinal transmission section 612, the conveyor belt 61 can drive the second connecting member 52 to move out of the plug-in slot 512, thereby driving the second connecting member 52 to perform circumferential movement.

[0069] It also includes a frame 71, wherein the frame 71 is fixed relative to the sliding seat 31, a first sliding ring groove 711 is provided on the frame 71, and a second sliding ring groove 712 is provided on the inner side of the first sliding ring groove 711, the first sliding ring groove 711 and the second sliding ring groove 712 are both connected to one side of the frame 71, the sliding rod 62 passes through the first sliding ring groove 711, and the slider 63 is slidably connected to the inner side of the second sliding ring groove 712; a mating ring groove 713 is also provided on the inner side of the frame 71, the mating ring groove 713 is communicated with the second sliding ring groove 712, and the conveyor belt 61 is rotatably arranged on the inner side of the mating ring groove 713.

[0070] In a specific embodiment, the slider 63 is a square block. This design prevents the slider 63 from rotating relative to the second sliding ring groove 712 when the slider 63 slides along the second sliding ring groove 712. This also facilitates the vertical connection and engagement of the slider 63 with the conveyor belt 61.

[0071] In a specific implementation, after the control cylinder 54 is retracted by more than one interval, the slider 63 is inserted into the conveyor belt 61 and meshes with the conveyor belt 61. By providing the conveyor belt 61 and the conveyor belt 61 as a circular rotating structure, the rotating conveyor belt 61 can carry the slider 63 to the side of the workbench 1 away from the machine base 2, and then carry the grinding wheel 42 to move, thereby facilitating the connection of the grinding wheel 42 and the displacement adjustment of the grinding wheel 42. Specifically, when the regulating cylinder 54 contracts, the slider 63 slides from one side of the frame 71 into the inside of the second sliding ring groove 712. When the slider 63 slides to engage with the conveyor belt 61, the elastic card 53 is squeezed by the side baffle 55 to disengage from the first connecting member 51. At this time, the conveyor belt 61 can carry the slider 63 to move circumferentially, thereby completing the positioning of the slider 63. By setting the frame 71 to limit the slider 63, when the conveyor belt 61 engages with the slider 63, the slider 63 can only move circumferentially along the second sliding ring groove 712, thereby allowing the conveyor belt 61 to continue to engage with the slider 63 during the movement of the slider 63, thereby improving the stability of the displacement of the slider 63 and facilitating use.

[0072] The conveyor belt 61 is provided to rotate back and forth to realize the automatic material removal and maintenance of the grinding wheel 42. Rear grinding wheel 42 By setting the slider 53 and the conveyor belt 61 to engage with each other, the machine curve of the present application is made The axis rotating surface grinding device does not need to set the clamping parts of the grinding wheel 42 as Robotic arm, etc., easy to use.

[0073] It also includes a driving wheel 72 and a second driving motor 73, wherein the multiple driving wheels 72 are rotatably arranged on the inner side of the frame 71 to drive the conveyor belt 61 to rotate, and the second driving motor 73 is arranged on one side of the frame 71 to drive the multiple driving wheels 72 to rotate.

[0074] In a specific implementation, a mounting plate is installed on one side of the frame 71 , and the second drive motor 73 is disposed on the mounting plate, and the plurality of drive wheels 72 are driven by a drive belt.

[0075] Since the frame 71 is arranged in a square frame shape, four driving wheels 72 are provided to drive the conveyor belt 61 from four diagonal positions of the frame 71 , so that the transmission state of the conveyor belt 61 is more stable.

[0076] As a preferred embodiment, it further includes a gantry 32 , wherein the gantry 32 is arranged on the workbench 1 , and the sliding seat 31 is slidably arranged on the gantry 32 , and the conveyor belt 61 passes between the two ends of the gantry 32 .

[0077] In a specific implementation, the middle section of the gantry 32 is provided with a slide rail, and the sliding seat 31 is slidably connected to the slide rail. The middle section of the gantry 32 passes through the inner side of the rectangular frame 71 to be connected to the rectangular frame 71 .

[0078] The gantry 32 is arranged to cooperate with the frame 71. Since the middle part of the frame 71 has an inner hole structure, and the frame 71 needs to extend between the working area and the maintenance area, the gantry 32 is arranged to be connected through the frame 71, so that the gantry 32 and the frame 71 can be compositely assembled. The assembly frame of the sliding seat 31 does not need to be arranged outside the frame 71, thereby reducing the assembly space required for the crankshaft rotating surface grinding device of the present application.

[0079] As a preferred embodiment, it also includes a mounting body 41 and a first drive motor 43, wherein the mounting body 41 is arranged on the second connecting member 52, and a protective groove 411 is opened on the mounting body 41, and the protective groove 411 is connected to the adjacent two sides of the mounting body 41, and the grinding wheel 42 is rotatably arranged on the inner side of the protective groove 411 and extends out of the mounting body 41; the first drive motor 43 is arranged on the mounting body 41, and is used to drive the grinding wheel 42 to rotate.

[0080] In a specific implementation, the grinding wheel 42 is located inside the protective groove 411 and connected to the mounting body 41 , which facilitates shielding and protecting the grinding wheel 42 through the mounting body 41 and facilitates connection between the second connecting member 52 and the grinding wheel 42 .

[0081] In a specific implementation, the gantry 32 is connected to the frame 71 via a first connecting rod, and the frame 71 is connected to the mounting body 41 via a second connecting rod.

[0082] The present invention also provides a method for grinding the rotating surface of a crankshaft of a general machine, which is completed by the above-mentioned rotating surface grinding device of the crankshaft of a general machine, and further includes the following steps:

[0083] S1. Clamp the crankshaft on the machine base 2, drive the crankshaft to rotate through the machine base 2, drive the grinding wheel 42 to move along the crankshaft through the sliding seat 31, and drive the cylinder 54 to extend and retract at a distance of one section, so that the grinding wheel 42 completes the grinding process on the rotating surface of the crankshaft. In this step, the grinding wheel 42 moves closely following the rotation of the connecting rod journal of the crankshaft, so that the connecting rod journal is fully ground. At the same time, by controlling the extension and retraction of the cylinder 54 to drive the grinding wheel 42 to move, the slider 63 cannot contact the conveyor belt 61;

[0084] S2. When the grinding wheel 42 needs to be replaced due to wear, the regulating cylinder 54 is retracted by more than one inter-segment distance. At this time, the side baffle 55 presses the elastic clamp 53 and causes the elastic clamp 53 to separate from the first connecting member 51. The connecting assembly 6 is connected to the second connecting member 52. By setting the regulating cylinder 54 to retract by more than one inter-segment distance, the slider 63 can be moved to connect with the conveyor belt 61.

[0085] S3. The second connecting member 52 is driven by the connecting assembly 6 to move to the side of the workbench 1 away from the machine base 2. Specifically, the conveyor belt 61 drives the second connecting member 52 to move via the slider 63;

[0086] S4, replace the grinding wheel 42 located on one side of the workbench 1 if it is worn.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grinding device for the rotating surface of a crankshaft of a general machine, characterized in that: It includes a workbench, a machine base, a sliding seat, a grinding wheel, a first connecting member, a second connecting member, an elastic clamping plate, a cylinder, a side baffle and a connecting assembly, wherein: a machine base, arranged on the workbench, for clamping the crankshaft and driving the crankshaft to rotate; A sliding seat is slidably arranged on the workbench and located on one side of the machine base. The cylinder is arranged on the sliding seat. The sliding seat is used to slide in the extension direction of the machine base clamping the crankshaft, and the telescopic end of the cylinder is telescopic in the direction of approaching or moving away from the machine base. A first connecting member is provided on the telescopic end of the cylinder, and a second connecting member is slidably connected to a side of the first connecting member away from the cylinder, and a grinding wheel is rotatably provided on a side of the second connecting member away from the first connecting member, and the grinding wheel is used for grinding the crankshaft; an elastic clamping plate, provided on the second connecting member and clamped with the first connecting member; a side baffle, disposed on one side of the sliding seat, wherein when the telescopic end of the cylinder contracts, the side baffle presses the elastic clamping plate and causes the elastic clamping plate to separate from the first connecting member; The connecting assembly is used to connect the first connecting member and drive the first connecting member to move.

2. The crankshaft rotating surface grinding device according to claim 1, characterized in that: The first connecting member is provided with a plug-in slot which is connected to the top of the first connecting member. The second connecting member is plugged into the inner side of the plug-in slot and can only slide upward along the plug-in slot to be separated from the first connecting member.

3. The crankshaft rotating surface grinding device according to claim 1, characterized in that: The elastic card includes a clamping end and a connecting end. A clamping slot is provided on the first connecting member. The clamping end is inserted into the inner side of the clamping slot. The contact surface between the clamping end and the clamping slot is a plane. The side of the clamping end away from the clamping slot is an inclined surface. The side baffle is used to squeeze the connecting end toward the side close to the second connecting member.

4. The crankshaft rotating surface grinding device for a general purpose machine according to claim 1, characterized in that: The connecting assembly includes a conveyor belt, a slide bar and a slider, wherein: a conveyor belt rotatably disposed on the workbench, with two ends of the conveyor belt respectively located on opposite sides of the sliding seat, and a first tooth groove being formed on the conveyor belt; A sliding rod is arranged on one side of the second connecting member, and the slider is arranged at the end of the sliding rod. A second tooth groove is provided on the slider. When the cylinder contracts, the slider engages with the conveyor belt. When the slider engages with the conveyor belt, the elastic clip disengages from the first connecting member, and the slider slides in the rotation direction of the conveyor belt.

5. The crankshaft rotating surface grinding device for a general machine according to claim 4, characterized in that: Also included is a rectangular frame, wherein A frame is fixed relative to the sliding seat, a first sliding ring groove is formed on the frame, and a second sliding ring groove is formed inside the first sliding ring groove, the first sliding ring groove and the second sliding ring groove are both connected to one side of the frame, the sliding rod passes through the first sliding ring groove, and the slider is slidably connected to the inner side of the second sliding ring groove; A matching ring groove is further provided on the inner side of the rectangular frame. The matching ring groove is communicated with the second sliding ring groove. The conveyor belt is rotatably arranged on the inner side of the matching ring groove.

6. The crankshaft rotating surface grinding device for a general machine according to claim 4, characterized in that: The conveyor belt includes two longitudinal transmission sections and two transverse transmission sections. The slider is connected to the conveyor belt at the longitudinal transmission sections, and the length of the longitudinal transmission sections is greater than the height of the second connecting member.

7. The crankshaft rotating surface grinding device for a general machine according to claim 5, characterized in that: It also includes a driving wheel and a second driving motor, wherein, A plurality of driving wheels are rotatably arranged on the inner side of the frame for driving the conveyor belt to rotate, and the second driving motor is arranged on one side of the frame for driving the plurality of driving wheels to rotate.

8. The crankshaft rotating surface grinding device for a general purpose machine as claimed in claim 4, characterized in that: Also includes a gantry, which A gantry is arranged on the workbench, and the sliding seat is slidably arranged on the gantry, and the conveyor belt passes between the two ends of the gantry.

9. The crankshaft rotating surface grinding device for a general machine according to claim 1, characterized in that: It also includes a mounting body and a first drive motor, wherein, A mounting body is provided on the second connecting member, and a protective groove is formed on the mounting body, the protective groove being connected to two adjacent sides of the mounting body, the grinding wheel being rotatably provided inside the protective groove and extending out of the mounting body; The first driving motor is arranged on the mounting body and is used for driving the grinding wheel to rotate.

10. A method for grinding the rotating surface of a crankshaft of a general machine, characterized in that: The method is accomplished by the crankshaft rotating surface grinding device according to any one of claims 1 to 9, comprising the following steps: S1. Clamp the crankshaft on the machine base, drive the crankshaft to rotate through the machine base, drive the grinding wheel to move along the crankshaft through the sliding seat, and drive the cylinder to extend and retract within a certain distance, so that the rotating surface of the crankshaft is ground by the grinding wheel; S2. When the grinding wheel needs to be replaced due to wear, the cylinder is regulated to retract by more than one interval. At this time, the side baffle presses the elastic clamping plate and separates the elastic clamping plate from the first connecting member, and the connecting assembly is connected to the second connecting member; S3, driving the second connecting member to move to the side of the workbench away from the machine base through the connecting assembly; S4. Replace the grinding wheel on one side of the workbench if it is worn.

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