A rolling grinder for diesel engine crankshaft

Abstract

The application belongs to the technical field of grinding machine, and discloses a rolling grinding machine for diesel engine crankshaft machining, which comprises a main part, a body assembly, a fixing assembly arranged on the body assembly, an upper strength part, a rotating assembly rotatably connected in the body assembly, a conversion assembly rotatably connected on the body assembly, and an output assembly fixedly connected outside the conversion assembly. The grinding wheel is placed on the fixing assembly, and then the body assembly is pushed to move relatively. Under the action of the conversion assembly, the sliding force is converted into the rotating force and is transmitted to the output assembly. At this time, the output assembly will slide along the track of the body assembly, and drive the rotating assembly to rotate. Since the initial state of the rotating assembly is to clamp the fixing assembly, the rotating assembly will drive the fixing assembly to fasten the grinding wheel in the process of rotating, so that the purpose of uniformly fastening the flange plate is achieved.

Description

Technical Field

[0001] This invention belongs to the field of grinding technology, specifically a rolling grinding machine for machining diesel engine crankshafts. Background Technology

[0002] Grinding machines are machine tools that use abrasives to grind the surface of workpieces. Most grinding machines use high-speed rotating grinding wheels for grinding, while a few use other abrasives and free abrasives such as oilstones, belt abrasives, honing machines, ultra-precision machining tools, belt grinding machines, grinding machines, and polishing machines.

[0003] Chinese Patent Application No. 202323151441.5 discloses a novel double-wheel head crankshaft grinding machine, which includes a base plate. A first mounting plate is fixedly connected to the top of the base plate. A first electric push rod is fixedly connected to the side of the first mounting plate. A movable plate is fixedly connected to the side of the first electric push rod. A slider is fixedly connected to the bottom of the movable plate. A fixed block is fixedly connected to the top of the base plate. A first mounting seat is fixedly connected to the top of the fixed block. By controlling the operation of the first electric push rod, the sliding action of the slider in the first slide groove can drive the movable plate to move, thereby driving the fixed ring to move, so as to adjust the crankshaft clamping distance and ensure applicability to crankshafts of different sizes. By controlling the operation of the first motor, the first rotating shaft can be driven to rotate, which in turn drives the connecting plate to rotate, thereby causing the fixed ring to drive the crankshaft to rotate, so as to achieve the purpose of rotating the crankshaft.

[0004] However, existing crankshaft rolling grinders require a paper shim between the grinding wheel and the pressure plate when installing the grinding wheel. During the tightening process, the force must be applied evenly, and the tightening nut cannot be tightened too much. If it is too tight, the grinding wheel will be damaged; if it is too loose, the grinding wheel will lose its balance. This places extremely high technical requirements on the operators. Therefore, we have designed a rolling grinder for diesel engine crankshaft machining. Summary of the Invention

[0005] To address the problem mentioned in the background art that in the rolling grinding machine for machining diesel engine crankshafts, the grinding wheel must be tightened with uniform force during the tightening process, and the tightening nut cannot be tightened too much, otherwise the grinding wheel will be damaged; if it is too loose, the grinding wheel will lose its balance, which requires a high level of skill from the operator, this invention provides a rolling grinding machine for machining diesel engine crankshafts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including,

[0007] The main component includes a body assembly and a fixing assembly disposed on the body assembly;

[0008] The winding component includes a rotating component rotatably connected within the main body assembly, a conversion component rotatably connected to the main body assembly, and an output component fixedly connected outside the conversion component.

[0009] Preferably, the main body assembly includes a rolling grinding machine device, a grinding wheel guard first disposed on the rolling grinding machine device, and a grinding wheel guard second fixedly connected to the rolling grinding machine device and corresponding to the grinding wheel guard first.

[0010] The first grinding wheel guard and the second grinding wheel guard are connected by bolts.

[0011] Preferably, the fixing assembly includes a mounting rod rotatably connected to the second grinding wheel guard, a threaded head at the end of the mounting rod, and a fastener sleeved on the mounting rod.

[0012] Preferably, the inner wall of the grinding wheel guard is provided with a rotating groove.

[0013] The rotating assembly includes a toothed ring rotatably connected in the rotating groove, a limiting groove formed on the toothed ring, a slider slidably connected in the limiting groove, a connecting rod fixedly connected to the end of the slider, and an arc-shaped clamp fixedly connected to the end of the connecting rod.

[0014] The arc-shaped clamp is in contact with the fastener.

[0015] Preferably, the conversion assembly includes a conversion rod rotatably connected to the inner wall of the first grinding wheel guard, a spiral groove formed outside the conversion rod, a sleeve fixedly connected to the inner wall of the second grinding wheel guard at the position corresponding to the conversion rod, and a protrusion fixedly connected to the end of the sleeve.

[0016] Preferably, a sliding groove is provided on the inner wall of the grinding wheel guard at the position of the rotating groove;

[0017] The output component includes a toothed plate slidably connected in the sliding groove, an abutment groove formed on the toothed plate, and an abutment rod disposed in the abutment groove;

[0018] The end of the abutment rod is connected to the conversion rod, and the toothed plate meshes with the toothed ring.

[0019] Preferably, it further includes a control component, which includes,

[0020] A connecting component rotatably connected to the end of the rotating component, a lifting component rotatably connected to the end of the connecting component, and a limiting component disposed within the lifting component.

[0021] Preferably, the connecting assembly includes a control rod sleeved outside the connecting rod, a stop block rotatably connected to the end of the control rod, and an elastic element disposed between the stop block and the rotating groove.

[0022] Preferably, the grinding wheel guard has a through hole at the position of the rotating groove;

[0023] The lifting assembly includes a lifting rod rotatably connected to the end of the stop block, and a pull ring disposed at the end of the lifting rod;

[0024] The lifting rod is slidably connected to the through hole.

[0025] Preferably, the lifting rod has an internal groove.

[0026] The limiting assembly includes a support rod rotatably connected within the working groove, a limiting plate fixedly connected outside the support rod, and a coil spring sleeved outside the support rod.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the grinding wheel is placed at a designated position on the fixed component, thereby pushing the main body component to move relative to it. Under the action of the conversion component, the sliding force is converted into a rotational force and transmitted to the output component. At this time, the output component will slide along the trajectory of the main body component, while driving the rotating component to rotate. Since the rotating component initially clamps the fixed component, the rotating component will drive the fixed component to tighten the grinding wheel during the rotation process, thus achieving the purpose of uniformly tightening the flange.

[0028] After the aforementioned main body components are combined, the fasteners exert just the right clamping force on the grinding wheel. They are neither too loose, causing the grinding wheel to become unstable, nor too tight, causing damage to the grinding wheel. To prevent the grinding wheel and the rotating component from interfering with each other during the grinding process, the lifting component needs to be slid outward. The connecting component will control the rotating component to no longer clamp the fixed component. When the lifting component moves to a certain distance, the limiting component will unfold from inside the lifting component and abut against the main body component. In this way, the rotating component cannot clamp the fixed component before the lifting component resets, so that the grinding wheel and rotating components will not interfere with each other during the grinding process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the grinding wheel guard 1 and grinding wheel guard 2 in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0031] Figure 3This is a schematic diagram of the initial state of the internal structure of the first and second grinding wheel guards in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0032] Figure 4 This is a schematic diagram of the fixed component structure in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0033] Figure 5 This is a plan view of the grinding wheel guard in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0034] Figure 6 This is a partial cross-sectional view of the gear ring structure in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0035] Figure 7 This is a schematic cross-sectional view of the conversion assembly in the rolling grinding machine for machining diesel engine crankshafts according to the present invention.

[0036] Figure 8 This is a schematic cross-sectional view of the output component in the rolling grinding machine for machining diesel engine crankshafts according to the present invention.

[0037] Figure 9 This is a schematic diagram of the control components in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0038] Figure 10 This is a schematic diagram of the connecting assembly structure in the rolling grinding machine for machining diesel engine crankshafts according to the present invention;

[0039] Figure 11 This is a schematic diagram of the lifting and limiting components in the rolling grinding machine for machining diesel engine crankshafts according to the present invention.

[0040] In the diagram: 100, Main body component; 101, Body assembly; 101a, Rolling grinding machine device; 101b, Grinding wheel guard one; 101c, Rotating groove; 101d, Sliding groove; 101e, Through hole; 101f, Grinding wheel guard two; 102, Fixing assembly; 102a, Mounting rod; 102b, Threaded head; 102c, Fastener; 200, Tightening component; 201, Rotating assembly; 201a, Gear ring; 201b, Limiting groove; 201c, Slider; 201d, Connecting rod; 201e, Arc-shaped clamp; 202, Conversion. Components; 202a, conversion rod; 202b, spiral groove; 202c, sleeve; 202d, protrusion; 203, output component; 203a, toothed plate; 203b, abutment groove; 203c, abutment rod; 300, control component; 301, connecting component; 301a, control rod; 301b, stop block; 301c, elastic element; 302, lifting component; 302a, lifting rod; 302b, action groove; 302c, pull ring; 303, limiting component; 303a, support rod; 303b, limiting plate; 303c, coil spring. Detailed Implementation

[0041] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1, referring to Figures 1-3 As shown, this is the first embodiment of the present invention. This embodiment provides a rolling grinding machine for machining diesel engine crankshafts, including a main body component 100, including a body assembly 101 and a fixed assembly 102 disposed on the body assembly 101; and a tensioning component 200, including a rotating assembly 201 rotatably connected inside the body assembly 101, a conversion assembly 202 rotatably connected to the body assembly 101, and an output assembly 203 fixedly connected outside the conversion assembly 202. First, the grinding wheel is placed at a designated position on the fixed assembly 102, and then the body assembly 101 is pushed to move relative to it. Under the action of the conversion assembly 202, the sliding force is converted into a rotational force and transmitted to the output assembly 203. At this time, the output assembly 203 will slide along the trajectory of the body assembly 101, while driving the rotating assembly 201 to rotate. Since the initial state of the rotating assembly 201 is clamping the fixed assembly 102, the rotating assembly 201 will drive the fixed assembly 102 to tighten the grinding wheel during the rotation process, thus achieving the purpose of uniformly tightening the flange.

[0043] Example 2, refer to Figures 1 to 8 In the second embodiment of the present invention, the main body component 101 includes a rolling grinding machine device 101a, a grinding wheel guard 101b disposed on the rolling grinding machine device 101a, and a grinding wheel guard 2 101f fixedly connected to the rolling grinding machine device 101a corresponding to the grinding wheel guard 101b; wherein, the grinding wheel guard 101b and the grinding wheel guard 2 101f are connected by bolts, and the grinding wheel guard 2 101f is fixedly connected to the platform of the rolling grinding machine device 101a, with the grinding wheel guard 101b and the grinding wheel guard 2 101f corresponding to each other.

[0044] Furthermore, the fixing component 102 includes a mounting rod 102a rotatably connected to the grinding wheel guard 101f, a threaded head 102b at the end of the mounting rod 102a, and a fastener 102c sleeved on the mounting rod 102a. The mounting rod 102a is rotatably connected to the grinding wheel guard 101f, and the end of the mounting rod 102a is provided with a threaded head 102b. A fastener 102c is provided at the threaded head 102b. In this way, when the grinding wheel is sleeved on the mounting rod 102a, the grinding wheel can be fastened by rotating the fastener 102c. Finally, the mounting rod 102a can be rotated by external power to drive the grinding wheel to grind the object.

[0045] It is worth noting that the grinding wheel is the main cutting tool of the grinding machine. It rotates at high speed along with the mounting rod 102a under external power to grind the crankshaft. The rotation speed of the grinding wheel is usually controlled by the machine tool's control system and can be adjusted according to the processing requirements. In addition, the crankshaft also rotates during the processing. The crankshaft is fixed between the headstock and tailstock of the machine tool. The headstock drives the crankshaft to rotate. This rotational motion causes each part of the crankshaft to pass through the grinding wheel in sequence to achieve grinding. As for the method of driving the mounting rod 102a to rotate, it is a mature existing technology and can be conventionally selected, so it will not be described in detail here.

[0046] Furthermore, the inner wall of the grinding wheel guard 101b is provided with a rotating groove 101c; the rotating assembly 201 includes a toothed ring 201a rotatably connected in the rotating groove 101c, a limiting groove 201b opened on the toothed ring 201a, a slider 201c slidably connected in the limiting groove 201b, a connecting rod 201d fixedly connected to the end of the slider 201c, and an arc-shaped clamping plate 201e fixedly connected to the end of the connecting rod 201d; wherein, the arc-shaped clamping plate 201e is in contact with the fastener 102c, the inner wall of the grinding wheel guard 101b is provided with a rotating groove 101c, the toothed ring 201a is rotatably connected in the rotating groove 101c, a pair of limiting grooves 201b are opened on the toothed ring 201a, and sliders 201c are slidably connected in each of the pair of limiting grooves 201b, and the ends of the sliders 201c are fixedly connected. A connecting rod 201d is fixedly connected to the fastener 102c. Each end of the connecting rod 201d is fixedly connected to an arc-shaped clamping plate 201e. The pair of arc-shaped clamping plates 201e clamp the fastener 102c. During the rotation of the toothed ring 201a, the connecting rod 201d and the arc-shaped clamping plates 201e will rotate around the toothed ring 201a. Since the initial state of the arc-shaped clamping plates 201e is clamping the fastener 102c, when the toothed plate 203a rotates, the fastener 102c will also rotate along with it at the external thread head 102b of the mounting rod 102a, causing the fastener 102c to move towards the flange. This achieves the purpose of uniformly tightening the flange. After installation, by controlling a pair of sliders 201c to move in opposite directions, the arc-shaped clamping plates 201e will no longer clamp the fastener 102c.

[0047] Furthermore, the conversion assembly 202 includes a conversion rod 202a rotatably connected to the inner wall of the first grinding wheel cover 101b, a spiral groove 202b formed outside the conversion rod 202a, a sleeve 202c fixedly connected to the inner wall of the second grinding wheel cover 101f at a position corresponding to the conversion rod 202a, and a protrusion 202d fixedly connected to the end of the sleeve 202c. The conversion rod 202a is rotatably connected to the inner wall of the first grinding wheel cover 101b, and the spiral groove 202b is formed outside the conversion rod 202a. A straight groove is also provided at the end of the spiral groove 202b, passing through the end of the conversion rod 202a. The second grinding wheel cover 101f corresponds to the conversion rod 202a. A sleeve 202c is fixedly connected to the position of the sleeve 202c, and a protrusion 202d is fixedly connected to the inner wall of the sleeve 202c. When the grinding wheel guard 101b is picked up, the end of the outer spiral groove 202b of the conversion rod 202a is aligned with the protrusion 202d on the inner wall of the sleeve 202c and inserted. This can also serve to position the grinding wheel guard 101b and the grinding wheel guard 201f. When the grinding wheel guard 101b and the grinding wheel guard 201f are pushed together, the protrusion 202d on the inner wall of the sleeve 202c will abut against the spiral groove 202b, so that the conversion rod 202a rotates along the trajectory of the spiral groove 202b, thereby achieving the purpose of force conversion.

[0048] Furthermore, the inner wall of the grinding wheel guard 101b is provided with a sliding groove 101d at the position of the rotating groove 101c; the output component 203 includes a toothed plate 203a slidably connected in the sliding groove 101d, an abutment groove 203b formed on the toothed plate 203a, and an abutment rod 203c provided in the abutment groove 203b; wherein, the end of the abutment rod 203c is connected to the conversion rod 202a, the toothed plate 203a meshes with the toothed ring 201a, the inner wall of the grinding wheel guard 101b is provided with a sliding groove 101d at the position of the rotating groove 101c, the toothed plate 203a is slidably connected in the sliding groove 101d, and the toothed plate 203a and the toothed ring 201a mesh... In the intermeshing process, the toothed plate 203a has an abutment groove 203b, and an abutment rod 203c is provided in the abutment groove 203b. The end of the abutment rod 203c is connected to the conversion rod 202a. When the conversion rod 202a rotates along the trajectory of the spiral groove 202b, the abutment rod 203c outside the conversion rod 202a will rotate around the conversion rod 202a as the center, and at the same time apply a force to the inner wall of the abutment groove 203b, so that the toothed plate 203a moves along the trajectory of the sliding groove 101d. During the sliding process, the teeth of the toothed plate 203a will push the toothed ring 201a to rotate, thereby achieving the purpose of providing power to the toothed ring 201a.

[0049] Working principle: First, place the grinding wheel in the designated position on the mounting rod 102a inside the grinding wheel guard 101f. Then, lift the grinding wheel guard 101b and align the end of the outer spiral groove 202b of the conversion rod 202a with the protrusion 202d on the inner wall of the sleeve 202c. This also serves to position the grinding wheel guard 101b and the grinding wheel guard 101f. When the grinding wheel guard 101b and the grinding wheel guard 101f are pushed together, the protrusion 202d on the inner wall of the sleeve 202c will abut against the spiral groove 202b, causing the conversion rod 202a to rotate along the trajectory of the spiral groove 202b. At this time, the abutting rod 203c outside the conversion rod 202a will rotate around the conversion rod 202a as the center. The toothed plate 203a rotates while applying force to the inner wall of the contact groove 203b, causing the toothed plate 203a to move along the trajectory of the sliding groove 101d. During the sliding process, the teeth of the toothed plate 203a will push the toothed ring 201a to rotate. As the toothed ring 201a rotates, it will drive the connecting rod 201d and the arc-shaped clamping plate 201e to rotate around the toothed ring 201a. Since the arc-shaped clamping plate 201e initially clamps the fastener 102c, when the toothed plate 203a rotates, the fastener 102c will also rotate along with it at the external thread head 102b of the mounting rod 102a, causing the fastener 102c to move towards the flange. This achieves the purpose of uniformly tightening the flange.

[0050] Example 3, referring to Figures 1 to 11 In the third embodiment of the present invention, a control component 300 is also included, comprising a connecting component 301 rotatably connected to the end of the rotating component 201, a lifting component 302 rotatably connected to the end of the connecting component 301, and a limiting component 303 disposed within the lifting component 302. By controlling the lifting component 302 to slide outward, the connecting component 301 will control the rotating component 201 to stop clamping the fixed component 102. When the lifting component 302 moves to a certain distance, the limiting component 303 will unfold from within the lifting component 302 and abut against the main component 101. In this way, the rotating component 201 cannot clamp the fixed component 102 before the lifting component 302 is reset, so that the grinding wheel will not interfere with each other during the grinding process.

[0051] Furthermore, the connecting assembly 301 includes a control rod 301a sleeved outside the connecting rod 201d, a stop block 301b rotatably connected to the end of the control rod 301a, and an elastic element 301c disposed between the stop block 301b and the rotating groove 101c. The grinding wheel guard 101b has a through hole 101e at the position of the rotating groove 101c. The lifting assembly 302 includes a lifting rod 302a rotatably connected to the end of the stop block 301b, and a pull ring 302c disposed at the end of the lifting rod 302a. In the middle, the lifting rod 302a is slidably connected to the through hole 101e. A control rod 301a is sleeved on the outside of a pair of connecting rods 201d. The ends of the pair of control rods 301a are rotatably connected to a stop block 301b. The end of the stop block 301b is rotatably connected to the lifting rod 302a. The lifting rod 302a is slidably connected in the through hole 101e. An elastic element 301c is sleeved on the lifting rod 302a. One end of the elastic element 301c is connected to the inner wall of the rotating groove 101c, and the other end abuts against the stop block 301b.

[0052] Furthermore, the lifting rod 302a has an internal groove 302b; the limiting component 303 includes a support rod 303a rotatably connected in the groove 302b, a limiting plate 303b fixedly connected to the outside of the support rod 303a, and a coil spring 303c sleeved on the outside of the support rod 303a. When the lifting rod 302a is fully protruding from the through hole 101e from the groove 302b, the support rod 303a will rotate and unfold under the action of the coil spring 303c, while simultaneously stopping the force applied to the lifting rod 302a. The component 301c will push the stop 301b to slide inward into the grinding wheel guard 101b. When the limiting plate 303b contacts the outer wall of the grinding wheel guard 101b, the stop 301b and the control rod 301a will drive the connecting rod 201d and the slider 201c to the middle position of the limiting groove 201b. At this time, the arc-shaped clamping plate 201e will no longer clamp the fastener 102c. In this way, when the grinding wheel rotates to grind the object, it will not come into contact with the arc-shaped clamping plate 201e. Thus, when the grinding wheel grinds the object, it will not interfere with the above-mentioned components.

[0053] Working Principle: After the grinding wheel guard 101b and grinding wheel guard 101f are combined, the fastener 102c provides just the right tightening force on the grinding wheel—not too loose, causing instability, nor too tight, causing damage. At this point, pulling the pull ring 302c causes the lifting rod 302a to slide outwards. During this movement, the lifting rod 302a will move the stop block 301b and compress the elastic element 301c. Since the control rod 301a and the stop block 301b are rotatably connected, and the end of the control rod 301a is sleeved outside the connecting rod 201d, when the stop block 301b slides outwards with the lifting rod 302a, it will cause the end of the control rod 301a to extend outwards. Thus, under the action of the stop block 301b and the control rod 301a, the connecting rod 201d will cause the slider 201c to slide in the opposite direction within the limiting groove 201b. At the end of the limiting groove 201b, when the lifting rod 302a extends completely out of the through hole 101e, under the action of the coil spring 303c, the support rod 303a will drive the limiting plate 303b to rotate and unfold, while simultaneously stopping the force applied to the lifting rod 302a. At this time, the elastic element 301c will push the stop block 301b to slide into the grinding wheel cover 101b. When the limiting plate 303b contacts the grinding wheel cover 101b... When the outer wall of 101b is being moved, the stop block 301b and the control rod 301a will drive the connecting rod 201d and the slider 201c to the middle position of the limiting groove 201b. At this time, the arc-shaped clamping plate 201e will no longer clamp the fastener 102c. In this way, when the grinding wheel rotates to grind the object, it will not come into contact with the arc-shaped clamping plate 201e. Thus, the grinding wheel will not interfere with the toothed ring 201a and toothed plate 203a during the grinding process.

[0054] The rest of the structure is the same as in Example 2.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rolling grinding machine for machining diesel engine crankshafts, characterized in that: include, The main body component (100) includes a body assembly (101) and a fixing assembly (102) disposed on the body assembly (101). The upper component (200) includes a rotating component (201) rotatably connected within the main body assembly (101), a conversion component (202) rotatably connected to the main body assembly (101), and an output component (203) fixedly connected outside the conversion component (202). The main body assembly (101) includes a rolling grinding machine device (101a), a first grinding wheel guard (101b) disposed on the rolling grinding machine device (101a), and a second grinding wheel guard (101f) fixedly connected to the rolling grinding machine device (101a) and corresponding to the first grinding wheel guard (101b). The first grinding wheel guard (101b) and the second grinding wheel guard (101f) are connected by bolts; The fixing component (102) includes a mounting rod (102a) rotatably connected to the second grinding wheel guard (101f), a threaded head (102b) provided at the end of the mounting rod (102a), and a fastener (102c) sleeved on the mounting rod (102a). The inner wall of the grinding wheel guard (101b) is provided with a rotating groove (101c). The rotating assembly (201) includes a toothed ring (201a) rotatably connected in the rotating groove (101c), a limiting groove (201b) opened on the toothed ring (201a), a slider (201c) slidably connected in the limiting groove (201b), a connecting rod (201d) fixedly connected to the end of the slider (201c), and an arc-shaped clamp (201e) fixedly connected to the end of the connecting rod (201d). The arc-shaped clamp (201e) is in contact with the fastener (102c); The conversion assembly (202) includes a conversion rod (202a) rotatably connected to the inner wall of the first grinding wheel cover (101b), a spiral groove (202b) opened outside the conversion rod (202a), a sleeve (202c) fixedly connected to the inner wall of the second grinding wheel cover (101f) at a position corresponding to the conversion rod (202a), and a protrusion (202d) fixedly connected to the end of the sleeve (202c). The inner wall of the grinding wheel guard (101b) is provided with a sliding groove (101d) at the position of the rotating groove (101c); The output component (203) includes a toothed plate (203a) slidably connected in the sliding groove (101d), an abutment groove (203b) formed on the toothed plate (203a), and an abutment rod (203c) provided in the abutment groove (203b). The end of the abutment rod (203c) is connected to the conversion rod (202a), and the toothed plate (203a) meshes with the toothed ring (201a); It also includes a control component (300), including, A connecting component (301) rotatably connected to the end of the rotating component (201), a lifting component (302) rotatably connected to the end of the connecting component (301), and a limiting component (303) disposed within the lifting component (302). The connecting assembly (301) includes a control rod (301a) sleeved outside the connecting rod (201d), a stop (301b) rotatably connected to the end of the control rod (301a), and an elastic member (301c) disposed between the stop (301b) and the rotating groove (101c). The grinding wheel guard (101b) has a through hole (101e) at the position of the rotating groove (101c). The lifting assembly (302) includes a lifting rod (302a) rotatably connected to the end of the stop (301b), and a pull ring (302c) provided at the end of the lifting rod (302a). The lifting rod (302a) is slidably connected to the through hole (101e).

2. The rolling grinding machine for machining diesel engine crankshafts according to claim 1, characterized in that: The lifting rod (302a) has an internal groove (302b) inside its body; The limiting component (303) includes a support rod (303a) rotatably connected in the function groove (302b), a limiting plate (303b) fixedly connected to the outside of the support rod (303a), and a coil spring (303c) sleeved on the outside of the support rod (303a).

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