Rolling grinding machine for machining crankshaft of diesel engine

Abstract

The invention belongs to the technical field of grinding machines, and discloses a rolling grinding machine for machining a crankshaft of a diesel engine, which comprises a main body component comprising a body assembly and a fixing assembly arranged on the body assembly; and the strengthening component comprises a rotating assembly rotationally connected to the interior of the body assembly, a conversion assembly rotationally connected to the body assembly and an output assembly fixedly connected to the exterior of the conversion assembly. A grinding wheel is placed on the fixing assembly, then the body assembly is pushed to move relatively, and under the action of the conversion assembly, the grinding wheel is fixed to the body assembly; the sliding acting force is converted into the rotating acting force, the rotating acting force is transmitted to the output assembly, at the moment, the output assembly slides along the track of the body assembly and drives the rotating assembly to rotate at the same time, and due to the fact that the rotating assembly clamps the fixing assembly in the initial state, the rotating assembly does not rotate in the rotating process. And the fixing assembly is driven to fasten the grinding wheel, so that the purpose of uniformly fastening the flange plate can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of grinders, in particular to a rolling grinder for machining a diesel engine crankshaft. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding, and a few use other abrasive tools such as oilstones and abrasive belts and free abrasives for processing, such as honing machines, super finishing machines, belt grinders, grinders and polishing machines.

[0003] The Chinese patent application number 202323151441.5 discloses a novel double-grinding wheel frame crankshaft grinder, which includes a base plate, a first mounting plate fixedly connected to the top of the base plate, a first electric push rod fixedly connected to the side of the first mounting plate, a movable plate fixedly connected to the side of the first electric push rod, a slider fixedly connected to the bottom of the movable plate, a fixed block fixedly connected to the top of the base plate, and a first mounting seat fixedly connected to the top of the fixed block. By controlling the first electric push rod to work, the movable plate can be driven to move with the help of the sliding action of the slider in the first slide groove, and then the fixed ring can be driven to move, so as to achieve the purpose of adjusting the crankshaft clamping distance and ensure that it is suitable for crankshafts of different sizes. By controlling the first motor to work, the first rotating shaft can be driven to rotate, the connecting plate can be driven to rotate, and then the fixed ring drives the crankshaft to rotate, so as to achieve the purpose of rotating the crankshaft.

[0004] However, when installing the grinding wheel on the existing crankshaft rolling grinder, a paper pad must be placed between the grinding wheel and the pressure plate. During the tightening process, the grinding wheel must be tightened evenly and the fastening nut cannot be tightened too much. If it is too tight, the grinding wheel will be damaged, and if it is too loose, the grinding wheel will lose balance. This places extremely high technical requirements on the operators. For this reason, we have designed a rolling grinder for diesel engine crankshaft processing. Summary of the invention

[0005] In order to solve the problem in the above background technology that in a rolling grinder for machining a diesel engine crankshaft, the grinding wheel must be tightened evenly during the tightening process, and the fastening nut cannot be tightened too much, otherwise the grinding wheel will be damaged, and if it is too loose, the grinding wheel will lose balance, which places extremely high technical requirements on the operator, the present invention provides a rolling grinder for machining a diesel engine crankshaft.

[0006] To achieve the above object, the present invention provides the following technical solution: comprising:

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

[0008] The upper tensioning component comprises a rotating component rotatably connected inside the body component, a conversion component rotatably connected to the body component, and an output component fixedly connected outside the conversion component.

[0009] Preferably, the body assembly comprises a rolling grinder device, a grinding wheel guard 1 provided on the rolling grinder device, and a grinding wheel guard 2 fixedly connected to the rolling grinder device and corresponding to the grinding wheel guard 1;

[0010] Wherein, the grinding wheel guard 1 and the grinding wheel guard 2 are connected by bolts.

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

[0012] Preferably, the inner wall of the grinding wheel guard 1 is provided with a rotation groove 1;

[0013] The rotating assembly includes a gear ring rotatably connected to the rotating groove, a limiting groove provided on the gear ring, a slider slidably connected to the limiting groove, a connecting rod fixedly connected to the end of the slider, and an arc-shaped clamping plate fixedly connected to the end of the connecting rod;

[0014] Wherein, the arc-shaped clamping plate is in contact with the fastener.

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

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

[0017] The output assembly includes a tooth plate slidably connected to the sliding groove, a resistance groove formed on the tooth plate, and a resistance rod disposed in the resistance groove;

[0018] Wherein, the end of the abutment rod is connected to the conversion rod, and the tooth plate is meshed with the tooth ring.

[0019] Preferably, a control component is also included, which includes:

[0020] A connecting component rotatably connected to the end of the rotating component, a pulling component rotatably connected to the end of the connecting component, and a limiting component arranged in the pulling component.

[0021] Preferably, the connecting assembly includes a control rod sleeved outside the connecting rod, a stopper rotatably connected to the end of the control rod, and an elastic member provided between the stopper and the rotating groove.

[0022] Preferably, the grinding wheel guard is provided with a through hole at a position located at the rotation groove;

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

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

[0025] Preferably, an action groove is provided inside the rod body of the lifting rod;

[0026] The limiting assembly comprises a support rod rotatably connected to the action groove, a limiting plate fixedly connected to the outside of the support rod, and a coil spring sleeved on the outside of 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 specified position on the fixed component, thereby pushing the main component to move relatively. Under the action of the conversion component, the sliding force is converted into a rotating force and transmitted to the output component. At this time, the output component will slide along the trajectory of the main component and drive the rotating component to rotate. Since the initial state of the rotating component is to clamp the fixed component, the rotating component will drive the fixed component to tighten the grinding wheel during the rotation process, so that the purpose of uniformly tightening the flange can be achieved;

[0028] After the above-mentioned main body components are merged, the fasteners have just the right tightening force on the grinding wheel. They are neither too loose to cause instability of the grinding wheel nor too tight to cause damage to the grinding wheel. In order to avoid the grinding wheel and the rotating component from interfering with each other during the grinding process, the lifting component needs to slide outward, and 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 the lifting component and resist the main body component. In this way, the rotating component cannot clamp the fixed component before the lifting component is reset, so that the grinding wheel and the rotating components will not interfere with each other during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 2 It is a schematic diagram of the internal structure of the grinding wheel guard 1 and the grinding wheel guard 2 in the rolling grinder for machining the diesel engine crankshaft of the present invention;

[0031] Figure 3It is a schematic diagram of the initial state of the internal structure of the grinding wheel guard 1 and the grinding wheel guard 2 in the rolling grinder for machining the diesel engine crankshaft of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the fixed components in the rolling grinder for machining the crankshaft of a diesel engine of the present invention;

[0033] Figure 5 It is a plan view of a grinding wheel guard in a rolling grinder for machining a diesel engine crankshaft of the present invention;

[0034] Figure 6 It is a schematic diagram of the cross-sectional structure of the gear ring in the rolling grinder for machining the crankshaft of a diesel engine of the present invention;

[0035] Figure 7 It is a schematic cross-sectional structure diagram of a conversion assembly in a rolling grinder for machining a diesel engine crankshaft of the present invention;

[0036] Figure 8 It is a schematic diagram of the cross-sectional structure of the output assembly in the rolling grinder for machining the crankshaft of a diesel engine of the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the control components in the rolling grinder for machining the crankshaft of a diesel engine of the present invention;

[0038] Fig.10 It is a schematic diagram of the structure of the connecting assembly in the rolling grinder for machining the crankshaft of a diesel engine of the present invention;

[0039] Fig.11 The present invention is a schematic diagram of the structure of the lifting assembly and the limiting assembly in the rolling grinder for machining the crankshaft of a diesel engine.

[0040] In the figure: 100, main body; 101, main body assembly; 101a, rolling grinder device; 101b, grinding wheel guard 1; 101c, rotating groove; 101d, sliding groove; 101e, through hole; 101f, grinding wheel guard 2; 102, fixing assembly; 102a, mounting rod; 102b, threaded head; 102c, fastener; 200, upper tension component; 201, rotating assembly; 201a, gear ring; 201b, limit groove; 201c, slider; 201d, connecting rod; 201e, arc splint; 202, conversion Assembly; 202a, conversion rod; 202b, spiral groove; 202c, sleeve; 202d, protrusion; 203, output assembly; 203a, tooth plate; 203b, interference groove; 203c, interference rod; 300, control component; 301, connecting assembly; 301a, control rod; 301b, block; 301c, elastic member; 302, lifting assembly; 302a, lifting rod; 302b, action groove; 302c, pull ring; 303, limiting assembly; 303a, support rod; 303b, limiting plate; 303c, coil spring. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0042] Example 1, reference Figure 1 to Figure 3 As shown, it is the first embodiment of the present invention, which provides a rolling grinder for machining diesel engine crankshafts, including a main body component 100, including a body component 101, a fixed component 102 arranged on the body component 101; an upper component 200, including a rotating component 201 rotatably connected to the body component 101, a conversion component 202 rotatably connected to the body component 101, and an output component 203 fixedly connected to the outside of the conversion component 202. First, the grinding wheel is placed at a specified position on the fixed component 102, and then the body component 101 is pushed to move relatively. Under the action of the conversion component 202, the sliding force is converted into a rotating force and transmitted to the output component 203. At this time, the output component 203 will slide along the trajectory of the body component 101, and at the same time drive the rotating component 201 to rotate. Since the initial state of the rotating component 201 is to clamp the fixed component 102, the rotating component 201 will drive the fixed component 102 to tighten the grinding wheel during the rotation process, so that the purpose of uniformly tightening the flange can be achieved.

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

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

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

[0046] Furthermore, a rotation groove 101c is provided on the inner wall of the grinding wheel guard 101b; the rotation assembly 201 includes a gear ring 201a rotatably connected to the rotation groove 101c, a limiting groove 201b provided on the gear ring 201a, a slider 201c slidably connected to 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, a rotation groove 101c is provided on the inner wall of the grinding wheel guard 101b, a gear ring 201a is rotatably connected in the rotation groove 101c, a pair of limiting grooves 201b are provided on the gear ring 201a, the sliders 201c are slidably connected in the pair of limiting grooves 201b, and the ends of the sliders 201c are fixedly connected A connecting rod 201d is fixedly connected, and the ends of the connecting rod 201d are fixedly connected with an arc-shaped clamping plate 201e. A pair of arc-shaped clamping plates 201e are clamped outside the fastener 102c. During the rotation of the gear ring 201a, the connecting rod 201d and the arc-shaped clamping plate 201e will be driven to rotate with the gear ring 201a as the center. Since the arc-shaped clamping plate 201e is initially clamping the fastener 102c, when the tooth plate 203a rotates, the fastener 102c will also follow and rotate at the external thread head 102b of the installation rod 102a, so that the fastener 102c moves toward the flange, thereby achieving the purpose of uniformly tightening the flange. After the installation is completed, the arc-shaped clamping plate 201e can no longer clamp the fastener 102c by controlling the pair of sliders 201c to move in the opposite direction.

[0047] Further, the conversion assembly 202 includes a conversion rod 202a rotatably connected to the inner wall of the grinding wheel guard 101b, a spiral groove 202b opened on the outside of the conversion rod 202a, a sleeve 202c fixedly connected to the inner wall of the grinding wheel guard 101f corresponding to the position of 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 rotatably connected to the conversion rod 202a, and the conversion rod 202a is provided with a spiral groove 202b. The end of the spiral groove 202b is also provided with a straight groove that passes through the end of the conversion rod 202a. The grinding wheel guard 101f corresponds to the conversion rod 202a. The sleeve 202c is fixedly connected to the position, and the inner wall of the sleeve 202c is fixedly connected to the protrusion 202d. Pick up 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 and insert it. This can also have the effect of positioning the grinding wheel guard 101b and the grinding wheel guard 2 101f. When pushing the grinding wheel guard 101b and the grinding wheel guard 2 101f to merge, the protrusion 202d on the inner wall of the sleeve 202c will contact 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, a sliding groove 101d is provided on the inner wall of the grinding wheel guard 101b at the position of the rotating groove 101c; the output assembly 203 includes a tooth plate 203a slidably connected to the sliding groove 101d, a resistance groove 203b provided on the tooth plate 203a, and a resistance rod 203c provided in the resistance groove 203b; wherein the end of the resistance rod 203c is connected to the conversion rod 202a, the tooth plate 203a is meshed with the gear 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 tooth plate 203a is slidably connected in the sliding groove 101d, and the tooth plate 203a is slidably connected to the gear ring 201a. The tooth plate 203a is meshed with each other, and a resistance groove 203b is provided on the tooth plate 203a, and a resistance rod 203c is arranged in the resistance groove 203b, and the end of the resistance rod 203c is connected to the conversion rod 202a. When the above-mentioned conversion rod 202a rotates following the trajectory of the spiral groove 202b, the resistance rod 203c outside the conversion rod 202a will rotate with the conversion rod 202a as the center, and at the same time, a force is applied to the inner wall of the resistance groove 203b, so that the tooth plate 203a moves along the trajectory of the sliding groove 101d. During the sliding process, the teeth of the tooth plate 203a will drive the gear ring 201a to rotate, thereby achieving the purpose of providing power for the above-mentioned gear ring 201a.

[0049] Working principle: first, place the grinding wheel on the designated position of the mounting rod 102a inside the grinding wheel guard 101f, then pick up 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 and insert it. This can also play a role in positioning the grinding wheel guard 101b and the grinding wheel guard 101f. When pushing the grinding wheel guard 101b and the grinding wheel guard 101f to merge, the protrusion 202d on the inner wall of the sleeve 202c will resist the spiral groove 202b, so that the conversion rod 202a rotates along the trajectory of the spiral groove 202b. At this time, the resistance rod 203c outside the conversion rod 202a will take the conversion rod 202a as the center of the circle. The tooth plate 203a is rotated and a force is applied to the inner wall of the abutment groove 203b at the same time, so that the tooth plate 203a moves along the trajectory of the sliding groove 101d. During the sliding process, the teeth of the tooth plate 203a will drive the tooth ring 201a to rotate. During the rotation of the tooth ring 201a, the connecting rod 201d and the arc-shaped clamping plate 201e will be driven to rotate with the tooth ring 201a as the center. Since the arc-shaped clamping plate 201e is initially in the state of clamping the fastener 102c, when the tooth plate 203a rotates, the fastener 102c will also follow and rotate at the external thread head 102b of the mounting rod 102a, so that the fastener 102c moves toward the flange, thereby achieving the purpose of evenly tightening the flange.

[0050] Example 3, reference Figures 1 to 11 , which is the third embodiment of the present invention, also includes a control component 300, which includes 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 arranged in 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 be deployed from the lifting component 302 and resist the main body component 101, so that the rotating component 201 cannot clamp the fixed component 102 before the lifting component 302 is reset, so that the grinding wheel will not hinder the rotating component 201 during the grinding process.

[0051] Furthermore, the connecting assembly 301 includes a control rod 301a sleeved outside the connecting rod 201d, a stopper 301b rotatably connected to the end of the control rod 301a, and an elastic member 301c disposed between the stopper 301b and the rotating groove 101c, and a through hole 101e is provided at the position of the grinding wheel guard 101b located at the rotating groove 101c; the lifting assembly 302 includes a lifting rod 302a rotatably connected to the end of the stopper 301b, and a pull ring 302c disposed at the end of the lifting rod 302a; In the figure, the lifting rod 302a is slidably connected with the through hole 101e, and a pair of connecting rods 201d are both sleeved with control rods 301a, and the adjacent ends of the pair of control rods 301a are rotatably connected with the stopper 301b, and the end of the stopper 301b is rotatably connected with the lifting rod 302a, and the lifting rod 302a is slidably connected in the through hole 101e, and an elastic member 301c is disposed on the outer sleeve of the lifting rod 302a, and one end of the elastic member 301c is connected to the inner wall of the rotating groove 101c, and the other end is in conflict with the stopper 301b.

[0052] Furthermore, an action groove 302b is provided inside the rod body of the lifting rod 302a; the limiting assembly 303 includes a support rod 303a rotatably connected to the action 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 position of the action groove 302b of the lifting rod 302a is completely protruded from 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, and at the same time stop applying force to the lifting rod 302a. At this time, the spring 303c The member 301c will push the stopper 301b to slide inwardly of the grinding wheel guard 101b. When the limiting plate 303b contacts the outer wall of the grinding wheel guard 101b, the stopper 301b and the control rod 301a will drive the connecting rod 201d and the slider 201c to move 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 contact with the arc-shaped clamping plate 201e. In this way, when the grinding wheel grinds the object, it will not interfere with the above-mentioned components.

[0053] Working principle: after the above-mentioned grinding wheel guard 101b and the grinding wheel guard 2 101f are combined, the fastening force of the fastener 102c on the grinding wheel is just right, which will not be too loose to cause the grinding wheel to be unstable, nor too tight to cause damage to the grinding wheel. At this time, the lifting rod 302a is driven to slide outward by pulling the pull ring 302c. During the movement of the lifting rod 302a, the lifting rod 302a will drive the stopper 301b to move and squeeze the elastic member 301c. Since the control rod 301a and the stopper 301b are rotationally connected, and the end of the control rod 301a is sleeved on the outside of the connecting rod 201d, when the stopper 301b follows the lifting rod 302a to slide outward, it will drive the end of the control rod 301a to extend outward. In this way, the connecting rod 201d will drive the slider 201c to slide in the opposite direction in the limiting groove 201b under the action of the stopper 301b and the control rod 301a. At the end of the limit groove 201b, when the position of the lifting rod 302a action groove 302b is 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, and stop applying force to the lifting rod 302a. At this time, the elastic member 301c will push the stop block 301b to slide in the direction of the grinding wheel guard 101b. When the limiting plate 303b contacts the grinding wheel guard 101b, 101b, the stopper 301b and the control rod 301a will drive the connecting rod 201d and the slider 201c to move to the middle position of the limiting groove 201b. At this time, the arc-shaped clamping plate 201e no longer clamps the fastener 102c, so that when the grinding wheel is rotating to grind the object, it will not contact with the arc-shaped clamping plate 201e, so that the grinding wheel will not interfere with the tooth ring 201a and the tooth plate 203a during the grinding process.

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

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A rolling grinder for machining a diesel engine crankshaft, characterized in that: include, The main body component (100) comprises a main body component (101) and a fixing component (102) arranged on the main body component (101); The upper tensioning component (200) comprises a rotating component (201) rotatably connected to the body component (101), a conversion component (202) rotatably connected to the body component (101), and an output component (203) fixedly connected to the outside of the conversion component (202).

2. The rolling grinder for machining a diesel engine crankshaft according to claim 1, characterized in that: The body component (101) comprises a rolling grinder device (101a), a grinding wheel guard 1 (101b) arranged on the rolling grinder device (101a), and a grinding wheel guard 2 (101f) fixedly connected to the rolling grinder device (101a) and corresponding to the grinding wheel guard 1 (101b); Wherein, the grinding wheel guard 1 (101b) and the grinding wheel guard 2 (101f) are connected by bolts.

3. The rolling grinder for machining a diesel engine crankshaft according to claim 2, characterized in that: The fixing assembly (102) comprises 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 outside the mounting rod (102a).

4. The rolling grinder for machining a diesel engine crankshaft according to claim 3, characterized in that: The inner wall of the grinding wheel guard 1 (101b) is provided with a rotation groove (101c); The rotating assembly (201) comprises a gear ring (201a) rotatably connected to the rotating groove (101c), a limiting groove (201b) provided on the gear ring (201a), a slider (201c) slidably connected to 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).

5. The rolling grinder for machining a diesel engine crankshaft according to claim 4, characterized in that: The conversion assembly (202) comprises a conversion rod (202a) rotatably connected to the inner wall of the first grinding wheel guard (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 guard (101f) at a position corresponding to the conversion rod (202a), and a protrusion (202d) fixedly connected to the end of the sleeve (202c).

6. The rolling grinder for machining a diesel engine crankshaft according to claim 5, characterized in that: 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 assembly (203) comprises a tooth plate (203a) slidably connected to the sliding groove (101d), a resistance groove (203b) provided on the tooth plate (203a), and a resistance rod (203c) provided in the resistance groove (203b); The end of the abutment rod (203c) is connected to the conversion rod (202a), and the tooth plate (203a) is meshed with the tooth ring (201a).

7. The rolling grinder for machining a diesel engine crankshaft according to claim 6, characterized in that: Also included is a control component (300) comprising, A connecting component (301) rotatably connected to the end of the rotating component (201), a pulling component (302) rotatably connected to the end of the connecting component (301), and a limiting component (303) disposed in the pulling component (302).

8. The rolling grinder for machining a diesel engine crankshaft according to claim 7, characterized in that: The connecting assembly (301) comprises a control rod (301a) sleeved outside the connecting rod (201d), a stopper (301b) rotatably connected to the end of the control rod (301a), and an elastic member (301c) disposed between the stopper (301b) and the rotating groove (101c).

9. The rolling grinder for machining a diesel engine crankshaft according to claim 8, characterized in that: The grinding wheel guard 1 (101b) is provided with a through hole (101e) located at the position of the rotating groove (101c); The lifting assembly (302) comprises a lifting rod (302a) rotatably connected to the end of the stopper (301b), and a pull ring (302c) provided at the end of the lifting rod (302a); Wherein, the lifting rod (302a) is slidably connected to the through hole (101e).

10. The rolling grinder for machining a diesel engine crankshaft according to claim 9, characterized in that: The lifting rod (302a) has an operating groove (302b) formed inside the rod body; The limiting assembly (303) comprises a support rod (303a) rotatably connected to the action 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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