Gear shaft grinding device and method

Abstract

The present invention belongs to the technical field of gear shaft processing, and provides a gear shaft grinding processing device and method, the device comprising a base, on which four groups of parallel and symmetrically distributed support rods are rotatably installed through side plates, and multiple groups of spaced support rollers are fixedly installed on the support rods; the side plate is provided with a lifting block located at one end of the support rod, and a first horizontal plate is slidably installed on the lifting block, and multiple groups of first positioning rollers are rotatably installed on the first horizontal plate. Compared with the prior art, the beneficial effects of the present invention are as follows: the gear shaft is supported from the bottom by the support rollers, and the position of the upper surface of the gear shaft is positioned by the lifting vertical plate and the second positioning roller, so as to determine the axial position of the gear shaft and ensure that the axial line of the gear shaft coincides with the rotation axis of the pressure plate, so as to avoid the gear shaft from jumping when grinding and rotating, and ensure the stability of the gear shaft when rotating.

Description

Technical Field

[0001] The invention belongs to the technical field of gear shaft processing, and in particular relates to a gear shaft grinding processing device and method. Background Art

[0002] The gear shaft is a typical part of the reducer. It is necessary to use the external cylindrical grinder on the external cylindrical grinder to grind the outer circle and end face. Most of the existing technologies use a clamp to clamp the workpiece to be ground, and use a rotating lever to move the clamp. Under the action of friction, the workpiece is driven to rotate to complete the grinding, or the chuck clamps the outer circle of the workpiece to be ground. Under the action of friction, the rotating chuck drives the workpiece to rotate to complete the grinding.

[0003] Most clamping drive devices clamp the outer circle. This type of clamping drive is very easy to slip when the speed is increased or the weight of the workpiece being ground increases, making it impossible for the workpiece to rotate effectively, thus affecting the processing accuracy. In response to the above technical problems, a Chinese patent with patent announcement number CN221337823U uses two sets of centers to tighten and fix the gear shaft from both ends of the gear shaft when in use, and then drives the gear shaft to rotate through the gear. However, it is difficult for the gear shaft to coincide with the axis of the center, and then the rotation axis of the gear shaft does not coincide with its own axis, resulting in the gear shaft jumping when rotating, which makes it difficult for the gear shaft to rotate smoothly, affecting the subsequent grinding process quality. Summary of the invention

[0004] The purpose of the present invention is to provide a gear shaft grinding processing device and method, aiming to solve the technical problem in the prior art that the gear shaft cannot be accurately positioned, resulting in poor rotation stability of the gear shaft and affecting the grinding quality.

[0005] The present invention is implemented as follows: a gear shaft grinding device comprises a base, on which four sets of parallel and symmetrically distributed support rods are rotatably mounted through side plates, and on which multiple sets of spaced support rollers are fixedly mounted;

[0006] The lifting block is provided with a lifting block at one end of the support rod, and the lifting block is slidably mounted with a first cross plate, and the first cross plate is rotatably mounted with multiple groups of first positioning rollers. The lifting block is slidably mounted with a lifting vertical plate, and the lifting vertical plate is distributed in a direction perpendicular to the base and passes through the lifting block, and one end of the lifting vertical plate away from the base is slidably mounted with a second cross plate parallel to the first cross plate, and the second cross plate is rotatably mounted with multiple groups of second positioning rollers used in conjunction with the first positioning roller. The lifting block is fixedly mounted with a fixed vertical plate parallel to the lifting vertical plate, and the fixed vertical plate and the lifting vertical plate are slidably mounted together with the lifting frame, and the lifting frame is driven to move when the lifting vertical plate moves, and the first telescopic parts are fixedly mounted on the sides of the two groups of lifting frames that are close to each other, and a pressing plate is rotatably mounted on the output end of the first telescopic part, and one group of the pressing plates is driven by a first rotating power member;

[0007] A grinding assembly for grinding the gear shaft is arranged on the base.

[0008] Further technical solution: a first support plate is fixedly installed on the side of the side plate, a guide rod is fixedly installed on the first support plate, a second support plate is slidably installed on the guide rod, the second support plate is fixedly connected to the lifting block, an elastic part distributed around the guide rod is fixedly installed on the first support plate, and one end of the elastic part away from the first support plate is fixedly connected to the second support plate.

[0009] Further technical solution: the first horizontal plate and the second horizontal plate are distributed along the length direction of the support rod, the first positioning roller and the second positioning roller are arranged in the symmetry plane of the two groups of support rods, and the first positioning roller and the second positioning roller are symmetrically distributed about the rotation axis of the pressure plate.

[0010] Further technical solution: A gear is rotatably installed inside the lifting frame and is located between the fixed vertical plate and the lifting vertical plate. The gear is meshed with a rack fixedly installed on the inner side of the fixed vertical plate and the lifting vertical plate. The inner side of the fixed vertical plate and the lifting vertical plate are both provided with grooves for rack installation.

[0011] Further technical solution: the grinding assembly includes a bracket, the bracket is slidably installed on the base and a third telescopic member is fixedly installed on the base to drive the bracket to move up and down, the bracket is an L-shaped structure and the horizontal section of the bracket is parallel to the support rod, an L-shaped mounting frame is slidably installed on the horizontal section of the bracket and a servo module is provided on the bracket to drive the mounting frame to move, a power shaft is rotatably installed on the vertical section of the mounting frame and a second rotating power member that drives the power shaft to rotate is fixedly installed on the mounting frame, and two sets of grinding discs are provided on the power shaft.

[0012] Further technical solution: the cross section of the power shaft is a non-circular structure, and the grinding disc is slidably mounted on the power shaft and fixed by a fixing screw.

[0013] Further technical solution: A support plate is slidably installed on one end of the mounting frame away from the second rotating power component, a support ring is rotatably installed on the support plate, the cross-section of the support ring is the same as the cross-section of the power shaft, and an adjusting threaded rod is rotatably installed on the mounting frame to drive the support plate to move.

[0014] Further technical solution: a mounting plate is rotatably mounted on the side panel, the rotation axis of the mounting plate coincides with the rotation axis of the support rod, a brush roller parallel to the support rod is rotatably mounted on the mounting plate, a second gear is fixedly mounted on the end of the brush roller, the second gear meshes with the first gear fixedly mounted on the end of the support rod, a second telescopic member is fixedly mounted on the side panel, and the second telescopic member drives the mounting plate to rotate via the connecting plate.

[0015] Further technical solution: a blow box is fixedly installed on the side panel where the brush roller is located, and the blow boxes are distributed along the length direction of the support rod. A plurality of blowing holes are provided on the blow box in the areas corresponding to the support rollers, and a plurality of blowing grooves are provided around the surface of the support rollers corresponding to the blowing holes. The blow box is connected to an air pump fixedly installed on the base.

[0016] The present invention also provides a gear shaft grinding method, which is applied to the gear shaft grinding device described above, and comprises the following steps:

[0017] Step S1: placing the gear shaft on the supporting roller for support, and positioning the lower surface of the gear shaft by the first positioning roller;

[0018] Step S2: Move the lifting vertical plate downward, and during the movement of the lifting vertical plate, the first positioning roller and the second positioning roller can always be symmetrically distributed about the rotation axis of the pressing plate, and the positioning of the gear shaft is completed when the second positioning roller contacts the upper surface of the gear shaft;

[0019] Step S3: the first telescopic member drives the pressing plate to move so that the pressing plate contacts the end surface of the gear shaft to complete the fixing of the gear shaft;

[0020] Step S4: Pull out the first horizontal plate and the second horizontal plate to both sides to separate the first positioning roller and the second positioning roller from the gear shaft, and then grind the outer cylindrical surface of the gear shaft by a grinding assembly.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Place the gear shaft on the support roller for support. Support the gear shaft from the bottom through the support roller, so that the placement of the gear shaft is simpler and more stable. Position the lower surface of the gear shaft through the first positioning roller, and then position the upper surface of the gear shaft through the lifting vertical plate and the second positioning roller, so as to determine the axis position of the gear shaft and ensure that the axis of the gear shaft coincides with the rotation axis of the pressure plate, so as to avoid the gear shaft from jumping when it is grinding and rotating, ensure the stability of the gear shaft when it rotates, and improve the grinding quality of the gear shaft. At the same time, the downward force of the grinding assembly on the gear shaft can further press the gear shaft against the support roller, further improve the stability of the gear shaft when it rotates, and improve the grinding quality of the gear shaft.

[0023] 2. When grinding, the support rod is driven by the gear shaft to rotate, and the support rod drives the brush roller to rotate synchronously through the meshing first gear and the second gear, and the rotation direction of the brush roller is opposite to that of the gear shaft. When the gear shaft is grinded, the grinding area rotates in the direction of the brush roller, so that the brush roller can clean the grinded surface of the gear shaft during the grinding process to prevent impurities from adhering to the surface of the gear shaft after grinding, and to prevent impurities from damaging the surface of the gear shaft when the gear shaft contacts the support roller, thereby ensuring the surface quality of the gear shaft.

[0024] 3. During grinding, air is delivered to the blow box through the air pump, and the air blows the contact position between the support roller and the gear shaft through the blow hole. The air can continue to flow upward through the blow groove and clean the surface of the gear shaft, thereby further reducing the amount of impurities on the surface of the gear shaft that is about to contact the support roller, thereby ensuring the surface quality of the gear shaft. At the same time, the contact area between the support roller and the gear shaft surface is reduced by the setting of the blow groove, thereby further reducing the probability of contact between the support roller and impurities on the gear shaft, thereby further ensuring the surface quality of the gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the base in the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the grinding assembly in the present invention.

[0028] Figure 4 It is a structural schematic diagram of the lifting block in the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of the support rod in the present invention.

[0030] Figure 6 for Figure 5 A magnified schematic diagram of area A in the middle.

[0031] Figure 7 It is a schematic diagram of the structure of the blow box in the present invention.

[0032] In the attached drawings: 1, base; 2, side plate; 3, support rod; 4, support roller; 5, blowing slot; 6, first support plate; 7, lifting block; 8, second support plate; 9, guide rod; 10, elastic member; 11, adjusting threaded rod; 12, first horizontal plate; 13, first positioning roller; 14, fixed vertical plate; 15, lifting vertical plate; 16, second horizontal plate; 17, second positioning roller; 18, lifting frame; 19, gear; 20, rack; 21, first telescopic member; 22, The first rotating power part; 23. The pressure plate; 24. The first gear; 25. The mounting plate; 26. The brush roller; 27. The second gear; 28. The second telescopic part; 29. ​​The connecting plate; 30. The bracket; 31. The mounting frame; 32. The servo module; 33. The power shaft; 34. The second rotating power part; 35. The grinding disc; 36. The support plate; 37. The support ring; 38. The third telescopic part; 39. The air pump; 40. The blow box; 41. The blow hole; 42. The grinding assembly. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] like Figure 1-Figure 7 As shown, a gear shaft grinding device provided by the present invention comprises a base 1, on which four groups of parallel and symmetrically distributed support rods 3 are rotatably mounted through side plates 2, and on which multiple groups of spaced support rollers 4 are fixedly mounted;

[0036] A lifting block 7 located at one end of the support rod 3 is provided on the side plate 2, a first support plate 6 is fixedly installed on the side of the side plate 2, a guide rod 9 is fixedly installed on the first support plate 6, a second support plate 8 is slidably installed on the guide rod 9, the second support plate 8 is fixedly connected to the lifting block 7, an elastic member 10 distributed around the guide rod 9 is fixedly installed on the first support plate 6, and the end of the elastic member 10 away from the first support plate 6 is fixedly connected to the second support plate 8, a first transverse plate 12 is slidably installed on the lifting block 7, a plurality of groups of first positioning rollers 13 are rotatably installed on the first transverse plate 12, a lifting vertical plate 15 is slidably installed on the lifting block 7, the lifting vertical plate 15 is distributed in a direction perpendicular to the base 1 and passes through the lifting block 7, a second transverse plate 16 parallel to the first transverse plate 12 is slidably installed on the end of the lifting vertical plate 15 away from the base 1, a plurality of groups of second positioning rollers 17 used in conjunction with the first positioning rollers 13 are rotatably installed on the second transverse plate 16, and the first transverse plate 12 and the second transverse plate 16 are both along the length of the support rod 3 The first positioning roller 13 and the second positioning roller 17 are arranged in the symmetry plane of the two groups of support rods 3, and the first positioning roller 13 and the second positioning roller 17 are symmetrically distributed about the rotation axis of the pressure plate 23. A fixed vertical plate 14 parallel to the lifting vertical plate 15 is fixedly installed on the lifting block 7, and a lifting frame 18 is slidably installed on the fixed vertical plate 14 and the lifting vertical plate 15. When the lifting vertical plate 15 moves, the lifting frame 18 is driven to move. A gear 19 located between the fixed vertical plate 14 and the lifting vertical plate 15 is rotatably installed in the lifting frame 18. The gear 19 is meshed with a rack 20 fixedly installed on the inner side surfaces of the fixed vertical plate 14 and the lifting vertical plate 15. The inner side surfaces of the fixed vertical plate 14 and the lifting vertical plate 15 are provided with grooves for the installation of the rack 20. The first telescopic member 21 is fixedly installed on the sides of the two groups of lifting frames 18 close to each other, and a pressure plate 23 is rotatably installed on the output end of the first telescopic member 21, and one group of pressure plates 23 is driven by the first rotating power member 22;

[0037] A grinding assembly 42 for grinding the gear shaft is arranged on the base 1 .

[0038] When this embodiment is actually used, in the initial state, under the action of the elastic member 10, the upper surface height of the first positioning roller 13 is flush with the upper surface height of the supporting roller 4, and the gear shaft is placed on the supporting roller 4 for support. After the gear shaft is placed, it will drive the lifting block 7 to move downward through the first positioning roller 13 and the first cross plate 12 and further compress the elastic member 10. The thrust generated by the compression of the elastic member 10 ensures that the first positioning roller 13 is always in contact with the outer cylindrical surface of the gear shaft. Then, the fixing of the lifting frame 18 is released. At this time, the lifting vertical plate 15 moves downward under the action of gravity. Due to the presence of the gear 19 and the rack 20, the lifting frame 18 moves downward synchronously. In the process of moving the lifting vertical plate 15, the first positioning roller 13 and the second positioning roller 17 can always be kept symmetrically distributed about the rotation axis of the pressure plate 23. When the second positioning roller 17 and the gear shaft are When the upper surface of the gear shaft contacts, the rotation axis of the pressing plate 23 coincides with the axis of the gear shaft, completing the positioning of the gear shaft, and fixing the lifting frame 18 again, after which the first telescopic member 21 extends to drive the pressing plate 23 to contact the end of the gear shaft to complete the fixing of the gear shaft, and the supporting roller 4 is used to support it from the bottom of the gear shaft, so that the placement of the gear shaft is simpler and more stable, and then the position of the upper surface of the gear shaft is positioned by the lifting vertical plate 15 and the second positioning roller 17, so as to determine the axis position of the gear shaft and ensure that the axis of the gear shaft coincides with the rotation axis of the pressing plate 23, so as to avoid the gear shaft from jumping during grinding and rotation, ensure the stability of the gear shaft during rotation, and improve the grinding quality of the gear shaft. After the fixing is completed, the first horizontal plate 12 and the second horizontal plate 16 are pulled out to both sides to make the first positioning roller 13 and the second positioning roller 17 separate from the gear shaft, and the placement and fixing of the gear shaft can be completed at this time;

[0039] During grinding, the gear shaft is driven to rotate by the first rotating power part 22, and at the same time, the upper surface of the gear shaft is ground through the grinding component 42. The downward force of the grinding component 42 on the gear shaft can further press the gear shaft against the supporting roller 4, further improving the stability of the gear shaft during rotation and improving the grinding quality of the gear shaft. After grinding is completed, the first telescopic part 21 contracts to release the fixation of the gear shaft, and a new gear shaft can be replaced to continue grinding.

[0040] In an example of the present embodiment, the first rotating power component 22 is a first motor, and of course it can also be other components such as a hydraulic motor that can output rotational power. The first motor drives the gear shaft to rotate to complete the comprehensive grinding. The first telescopic component 21 is a first electric telescopic rod, and of course it can also be other components such as a hydraulic cylinder that can actively change the length. The gear shaft is clamped and fixed by the first electric telescopic rod.

[0041] like Figure 1-Figure 3As shown, a gear shaft grinding processing device provided by the present invention, the grinding assembly 42 includes a bracket 30, the bracket 30 is slidably installed on the base 1 and the base 1 is fixedly installed with a third telescopic member 38 for driving the bracket 30 to move up and down, the bracket 30 is an L-shaped structure and the horizontal section of the bracket 30 is parallel to the support rod 3, an L-shaped mounting frame 31 is slidably installed on the horizontal section of the bracket 30 and a servo module 32 for driving the mounting frame 31 to move is arranged on the bracket 30, a power shaft 33 is rotatably installed on the vertical section of the mounting frame 31 and a second rotating power member 34 for driving the power shaft 33 to rotate is fixedly installed on the mounting frame 31, and two sets of grinding discs 35 are arranged on the power shaft 33.

[0042] Specifically, the cross section of the power shaft 33 is a non-circular structure, and the grinding disc 35 is slidably mounted on the power shaft 33 and fixed by fixing screws.

[0043] Specifically, a support plate 36 is slidably installed at one end of the mounting frame 31 away from the second rotating power member 34, and a support ring 37 is rotatably installed on the support plate 36. The cross-section of the support ring 37 is the same as that of the power shaft 33, and an adjusting threaded rod 11 is rotatably installed on the mounting frame 31 to drive the support plate 36 to move.

[0044] In actual application of this embodiment, the two sets of grinding discs 35 are adjusted to the set positions according to the placement position of the gear shaft, so that one set of grinding discs 35 is located at the end of the gear shaft, and the other set of grinding discs 35 is located at the position where the gear is located on the gear shaft, and then the positions of the grinding discs 35 are fixed by fixing screws. After the adjustment is completed, the third telescopic member 38 drives the bracket 30 to move downward so that the grinding discs 35 contact and grind with the outer cylindrical surface of the gear shaft, and then the servo module 32 drives the mounting frame 31 to move horizontally along the gear shaft to perform comprehensive grinding;

[0045] During grinding, one end of the power shaft 33 extends into the support ring 37, and the end of the power shaft 33 is supported by the support plate 36 and the support ring 37 to ensure the stability of the power shaft 33 during rotation. When the grinding disc 35 is replaced later, the grinding disc 35 can be replaced by adjusting the threaded rod 11 to drive the support plate 36 to separate from the power shaft 33.

[0046] In one embodiment of the present invention, the second rotating power component 34 is a second motor, and of course it can also be other components that can output rotational power, such as a hydraulic motor. The second motor drives the power shaft 33 to rotate and then rotates the grinding disc 35. The third telescopic component 38 is a third electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The third electric telescopic rod drives the bracket 30 to move up and down.

[0047] like Figure 1-Figure 7As shown, a gear shaft grinding processing device provided by the present invention is provided, a mounting plate 25 is rotatably mounted on the side plate 2, the rotation axis of the mounting plate 25 coincides with the rotation axis of the support rod 3, a brush roller 26 parallel to the support rod 3 is rotatably mounted on the mounting plate 25, a second gear 27 is fixedly mounted on the end of the brush roller 26, the second gear 27 is meshed with the first gear 24 fixedly mounted on the end of the support rod 3, a second telescopic member 28 is fixedly mounted on the side plate 2, and the second telescopic member 28 drives the mounting plate 25 to rotate through the connecting plate 29.

[0048] Specifically, a blow box 40 is fixedly installed on the side panel 2 where the brush roller 26 is located. The blow box 40 is distributed along the length direction of the support rod 3. A plurality of blowing holes 41 are provided on the blow box 40 in the area corresponding to the support roller 4, and a plurality of blowing grooves 5 surrounding the surface of the support roller 4 corresponding to the blowing holes 41 are provided. The blow box 40 is connected to an air pump 39 fixedly installed on the base 1.

[0049] In actual application of this embodiment, after the gear shaft is placed on the support roller 4 for support, the second telescopic member 28 drives the mounting plate 25 to rotate through the connecting plate 29 so that the brush roller 26 rotates around the support rod 3, and stops moving when the brush on the brush roller 26 contacts the outer circumferential surface of the gear shaft;

[0050] During grinding, the support rod 3 is driven by the gear shaft to rotate, and the support rod 3 drives the brush roller 26 to rotate synchronously through the meshing first gear 24 and the second gear 27, and the brush roller 26 rotates in the opposite direction to the gear shaft. When the gear shaft is being ground, the grinding area thereof rotates in the direction of the brush roller 26, so that during the grinding process, the brush roller 26 cleans the ground surface of the gear shaft, preventing the ground impurities from adhering to the surface of the gear shaft, preventing the impurities from damaging the surface of the gear shaft when the gear shaft contacts the support roller 4, and ensuring the surface quality of the gear shaft.

[0051] At the same time, air is delivered to the blowing box 40 through the air pump 39, and the air blows the contact position between the support roller 4 and the gear shaft through the blowing hole 41. The air can continue to flow upward through the blowing groove 5 and clean the surface of the gear shaft, thereby further reducing the amount of impurities on the surface of the gear shaft that is about to contact the support roller 4, thereby ensuring the surface quality of the gear shaft. At the same time, the setting of the blowing groove 5 reduces the contact area between the support roller 4 and the surface of the gear shaft, further reducing the probability of contact between the support roller 4 and impurities on the gear shaft, thereby further ensuring the surface quality of the gear shaft.

[0052] In one embodiment of the present invention, the second telescopic member 28 is a second electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The second electric telescopic rod drives the mounting plate 25 to rotate, so that the brush roller 26 can contact the surfaces of gear shafts of different diameters.

[0053] like Figure 1-Figure 7 As shown, a gear shaft grinding method provided by the present invention is applied to the gear shaft grinding device described above, and comprises the following steps:

[0054] Step S1: placing the gear shaft on the supporting roller 4 for support, and positioning the lower surface of the gear shaft by the first positioning roller 13;

[0055] Step S2: Move the lifting plate 15 downward. During the movement of the lifting plate 15, the first positioning roller 13 and the second positioning roller 17 can always be symmetrically distributed about the rotation axis of the pressing plate 23. When the second positioning roller 17 contacts the upper surface of the gear shaft, the positioning of the gear shaft is completed.

[0056] Step S3: the first telescopic member 21 drives the pressing plate 23 to move so that the pressing plate 23 contacts the end surface of the gear shaft to complete the fixing of the gear shaft;

[0057] Step S4: Pull out the first transverse plate 12 and the second transverse plate 16 to both sides to separate the first positioning roller 13 and the second positioning roller 17 from the gear shaft, and then grind the outer cylindrical surface of the gear shaft by the grinding assembly 42 .

[0058] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gear shaft grinding device, comprising a base (1), characterized in that: Four groups of parallel and symmetrically distributed support rods (3) are rotatably mounted on the base (1) via the side plates (2), and a plurality of groups of spaced support rollers (4) are fixedly mounted on the support rods (3); The side plate (2) is provided with a lifting block (7) located at one end of the support rod (3); a first horizontal plate (12) is slidably mounted on the lifting block (7); a plurality of first positioning rollers (13) are rotatably mounted on the first horizontal plate (12); a lifting vertical plate (15) is slidably mounted on the lifting block (7); the lifting vertical plates (15) are distributed in a direction perpendicular to the base (1) and penetrate the lifting block (7); a second horizontal plate (16) parallel to the first horizontal plate (12) is slidably mounted on the end of the lifting vertical plate (15) away from the base (1); a plurality of first positioning rollers (13) are rotatably mounted on the second horizontal plate (16) a second positioning roller (17) used in conjunction with the roller (13); a fixed vertical plate (14) parallel to the lifting vertical plate (15) is fixedly mounted on the lifting block (7); a lifting frame (18) is slidably mounted on the fixed vertical plate (14) and the lifting vertical plate (15); when the lifting vertical plate (15) moves, the lifting frame (18) is driven to move; first telescopic members (21) are fixedly mounted on the sides of the two groups of lifting frames (18) that are close to each other; a pressing plate (23) is rotatably mounted on the output end of the first telescopic member (21); one group of the pressing plates (23) is driven by a first rotating power member (22); The base (1) is provided with a grinding assembly (42) for grinding the gear shaft; A first support plate (6) is fixedly mounted on the side of the side plate (2), a guide rod (9) is fixedly mounted on the first support plate (6), a second support plate (8) is slidably mounted on the guide rod (9), the second support plate (8) is fixedly connected to the lifting block (7), an elastic member (10) distributed around the guide rod (9) is fixedly mounted on the first support plate (6), and one end of the elastic member (10) away from the first support plate (6) is fixedly connected to the second support plate (8); The first transverse plate (12) and the second transverse plate (16) are both distributed along the length direction of the support rod (3); the first positioning roller (13) and the second positioning roller (17) are both arranged in the symmetry plane of the two groups of support rods (3); the first positioning roller (13) and the second positioning roller (17) are symmetrically distributed about the rotation axis of the pressure plate (23); A gear (19) is rotatably mounted in the lifting frame (18) and is located between the fixed vertical plate (14) and the lifting vertical plate (15). The gear (19) meshes with a rack (20) fixedly mounted on the inner side surfaces of the fixed vertical plate (14) and the lifting vertical plate (15). The inner side surfaces of the fixed vertical plate (14) and the lifting vertical plate (15) are both provided with grooves for mounting the rack (20).

2. A gear shaft grinding device according to claim 1, characterized in that: The grinding assembly (42) comprises a bracket (30), the bracket (30) being slidably mounted on a base (1) and a third telescopic member (38) for driving the bracket (30) to move up and down is fixedly mounted on the base (1), the bracket (30) is an L-shaped structure and a horizontal section of the bracket (30) is parallel to the support rod (3), an L-shaped mounting frame (31) is slidably mounted on the horizontal section of the bracket (30) and a servo module (32) for driving the mounting frame (31) to move is arranged on the bracket (30), a power shaft (33) is rotatably mounted on the vertical section of the mounting frame (31) and a second rotating power member (34) for driving the power shaft (33) to rotate is fixedly mounted on the mounting frame (31), and two sets of grinding discs (35) are arranged on the power shaft (33).

3. A gear shaft grinding device according to claim 2, characterized in that: The cross section of the power shaft (33) is a non-circular structure, and the grinding disc (35) is slidably mounted on the power shaft (33) and fixed by a fixing screw.

4. A gear shaft grinding device according to claim 3, characterized in that: A support plate (36) is slidably mounted on one end of the mounting frame (31) away from the second rotating power member (34), a support ring (37) is rotatably mounted on the support plate (36), the cross section of the support ring (37) being the same as the cross section of the power shaft (33), and an adjusting threaded rod (11) is rotatably mounted on the mounting frame (31) for driving the support plate (36) to move.

5. The gear shaft grinding device according to claim 1, characterized in that: A mounting plate (25) is rotatably mounted on the side plate (2), the rotation axis of the mounting plate (25) coincides with the rotation axis of the support rod (3), a brush roller (26) parallel to the support rod (3) is rotatably mounted on the mounting plate (25), a second gear (27) is fixedly mounted on the end of the brush roller (26), the second gear (27) meshes with a first gear (24) fixedly mounted on the end of the support rod (3), a second telescopic member (28) is fixedly mounted on the side plate (2), and the second telescopic member (28) drives the mounting plate (25) to rotate via a connecting plate (29).

6. The gear shaft grinding device according to claim 5, characterized in that: A blow box (40) is fixedly mounted on the side plate (2) where the brush roller (26) is located. The blow boxes (40) are distributed along the length direction of the support rod (3). A plurality of blow holes (41) are provided on the blow boxes (40) in the areas corresponding to the support rollers (4), and a plurality of blow grooves (5) surrounding the surfaces of the support rollers (4) corresponding to the blow holes (41). The blow boxes (40) are connected to an air pump (39) fixedly mounted on the base (1).

7. A gear shaft grinding method, characterized in that: A gear shaft grinding device as claimed in any one of claims 1 to 6, comprising the following steps: Step S1: placing the gear shaft on the supporting roller (4) for support, and positioning the lower surface of the gear shaft by means of the first positioning roller (13); Step S2: the lifting vertical plate (15) is moved downward, and during the movement of the lifting vertical plate (15), the first positioning roller (13) and the second positioning roller (17) are always kept symmetrically distributed about the rotation axis of the pressing plate (23), and the positioning of the gear shaft is completed when the second positioning roller (17) contacts the upper surface of the gear shaft; Step S3: the first telescopic member (21) drives the pressing plate (23) to move so that the pressing plate (23) contacts the end surface of the gear shaft to complete the fixing of the gear shaft; Step S4: pulling out the first horizontal plate (12) and the second horizontal plate (16) to both sides so that the first positioning roller (13) and the second positioning roller (17) are separated from the gear shaft, and then grinding the outer cylindrical surface of the gear shaft by means of a grinding assembly (42).

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