A large gear floating type auxiliary positioning gear grinding device

Abstract

The utility model belongs to gear grinding technical field, concretely is a kind of big gear floating type auxiliary positioning gear grinding device, including shaft rod;The middle part of the shaft rod is sleeved with floating type adjusting ring;The middle part of the shaft rod is sleeved with centering expansion sleeve;The middle part of the shaft rod is sleeved with sleeve pipe;The middle part of the shaft rod is threadedly connected with lock nut;The middle part of the shaft rod is fixedly connected with bearing disc;The side wall of the bearing disc is detachably installed with a plurality of first force guide pipe;The middle part of the first force guide pipe is slidably connected with second force guide pipe;The middle part of the first force guide pipe is threadedly connected with adjusting nut;Through the above structure, after big gear is installed on shaft rod and completes centering operation, the load of the position of shaft rod far from root is reduced, the bending force caused by part of big gear self gravity is conducted to the position of shaft rod close to root, to reduce the axial displacement of big gear rotation caused by shaft rod bending, to reduce the influence on big gear grinding accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of gear grinding technology, specifically a floating auxiliary positioning grinding device for large gears. Background Technology

[0002] Gear grinding is a gear finishing method, mainly used to grind high-precision and hardened gears to meet usage requirements.

[0003] When grinding gears, auxiliary positioning devices are used to adjust and position the gears so that the gear's axis does not easily deviate during rotation. If the gear's axis deviates during gear grinding, it will directly affect the grinding accuracy. However, existing auxiliary positioning devices are mostly used for positioning gears. When some large gears are installed on the drive shaft, due to the large weight of the large gears and the fact that one end of the shaft is suspended to accommodate the gear, the middle of the shaft is prone to bending under stress. This causes the axis to shift when the gear rotates, affecting the grinding accuracy.

[0004] Therefore, this utility model provides a large gear floating auxiliary positioning gear grinding device. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A floating auxiliary positioning gear grinding device for a large gear, comprising a shaft; a floating adjusting ring sleeved in the middle of the shaft; a centering expansion sleeve sleeved in the middle of the shaft; a sleeve sleeved in the middle of the shaft; a locking nut threadedly connected to the middle of the shaft; a bearing plate fixedly connected to the middle of the shaft; a plurality of first force guide tubes detachably installed on the side wall of the bearing plate; a second force guide tube slidably connected to the middle of the first force guide tube; and an adjusting nut threadedly connected to the middle of the first force guide tube. Through the above structure, after the large gear is installed on the shaft and the centering operation is completed, the load on the shaft away from the root position can be reduced, and part of the bending force caused by the weight of the large gear itself can be transmitted to the position near the root of the shaft, thereby reducing the axial offset of the large gear during rotation caused by the bending of the shaft, and thus reducing the impact on the grinding accuracy of the large gear.

[0007] Preferably, the bearing plate has multiple insertion holes in its center; the end of the first force guide tube is fixedly connected to an insertion rod; multiple sealing strips are rotatably connected to the center of the bearing plate; multiple threaded holes are opened in the center of the bearing plate; and multiple round holes are opened in the center of the sealing strips. With the above structure, the positions of the multiple first force guide tubes and second force guide tubes can be easily adjusted according to the position of the through hole in the center of the large gear. The first force guide tubes and second force guide tubes can be pre-installed on the bearing plate without easily falling off, so as to facilitate their use. When the first force guide tubes and second force guide tubes are not needed, the insertion holes can be sealed with sealing strips to reduce the occurrence of external impurities entering and adhering to the inside of the insertion holes, which would cause inconvenience in subsequent insertion of the insertion rod.

[0008] Preferably, a magnet is fixed to the middle of the first force guide tube; the bearing plate is made of magnetic metal material; with the above structure, after the first force guide tube is installed on the bearing plate, the occurrence of the first force guide tube falling off can be further reduced, so that some extra first force guide tubes and second force guide tubes can be left on the bearing plate and are difficult to fall off when the bearing plate rotates.

[0009] Preferably, an elastic rope is fixed to the inner wall of the first force guide tube; the other end of the elastic rope is fixed to the inner wall of the second force guide tube; with the above structure, the occurrence of the first force guide tube and the second force guide tube extending arbitrarily can be reduced when the first force guide tube and the second force guide tube are not in use, thereby improving the convenience of carrying and storing the first force guide tube and the second force guide tube.

[0010] Preferably, the insertion hole is non-circular; the cross-sectional shape of the insertion rod corresponds to the insertion hole; with the above structure, when adjusting the position of the second guide tube by rotating the adjusting nut, it is not necessary to hold the first guide tube to limit its position, and it is also difficult for the first guide tube to rotate with the adjusting nut, thus improving the ease of use of the device.

[0011] Preferably, the centering sleeve is made of spring steel; through the above structure, the high elastic modulus and yield strength of spring steel can generate large elastic deformation, providing a more stable and accurate centering effect.

[0012] Preferably, the first and second force guide tubes are made of alloy steel. Through the above structure, the strong compressive strength of alloy steel reduces the occurrence of bending deformation of the first and second force guide tubes under stress.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The floating auxiliary positioning gear grinding device for a large gear described in this utility model, through the arrangement of a shaft, a floating adjusting ring, a centering expansion sleeve, a sleeve, a locking nut, a bearing plate, a first force guide tube, a second force guide tube, and an adjusting nut, can reduce the load on the shaft away from the root position after the large gear is installed on the shaft and the centering operation is completed. It can also transfer some of the bending force caused by the weight of the large gear itself to the position near the root of the shaft, thereby reducing the axial offset of the large gear during rotation caused by the bending of the shaft, and thus reducing the impact on the grinding accuracy of the large gear.

[0015] 2. The floating auxiliary positioning gear grinding device for a large gear described in this utility model, through the setting of insertion holes, insertion rods, sealing strips, threaded holes, and round holes, allows for convenient adjustment of the positions of multiple first and second force guide tubes according to the position of the through hole in the middle of the large gear. Furthermore, the first and second force guide tubes can be pre-installed on the support plate without easily falling off, facilitating their use. When the first and second force guide tubes are not needed, the insertion holes can be sealed with sealing strips to reduce the entry of external impurities and their adhesion to the inside of the insertion holes, thus preventing inconvenience in subsequent insertion of the insertion rod. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the centering expansion sleeve in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the carrier plate in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the first force guide tube in this utility model;

[0021] In the diagram: 1. Shaft; 12. Floating adjusting ring; 13. Centering expansion sleeve; 14. Sleeve; 15. Locking nut; 16. Bearing plate; 17. First force guide tube; 18. Second force guide tube; 19. Adjusting nut; 2. Insertion hole; 21. Insert rod; 22. Seal; 23. Threaded hole; 24. Round hole; 3. Magnet; 4. Elastic rope. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 4As shown, an embodiment of the present invention provides a floating auxiliary positioning gear grinding device for a large gear, comprising a shaft 1; a floating adjusting ring 12 sleeved in the middle of the shaft 1; a centering expansion sleeve 13 sleeved in the middle of the shaft 1; a sleeve 14 sleeved in the middle of the shaft 1; a locking nut 15 threadedly connected to the middle of the shaft 1; a bearing plate 16 fixedly connected to the middle of the shaft 1; a plurality of first force guide tubes 17 detachably installed on the side wall of the bearing plate 16; a second force guide tube 18 slidably connected to the middle of the first force guide tube 17; and an adjusting nut 19 threadedly connected to the middle of the first force guide tube 17. During operation, the inner hole of the gear to be ground is fitted onto the outside of the centering expansion sleeve 13. At this time, the end face of the gear abuts against the floating adjusting ring 12. Then, the locking nut 15 is rotated to move the sleeve 14, causing the sleeve 14 to compress the centering expansion sleeve 13. The centering expansion sleeve 13 under compression will produce elastic deformation in the middle, thereby generating a large friction force on both the inner and outer surfaces of the centering expansion sleeve 13. This makes it difficult for relative displacement to occur between the gear and the shaft 1, and the gear is centered. Then, the first guide tube 17 and the second guide tube 18 are placed on the end face of the gear and near the shaft. Between the bearing plates 16 located at the root of rod 1, the adjusting nut 19 is then rotated to move the middle of the first guide tube 17, thereby moving the second guide tube 18. This causes the end of the second guide tube 18 to abut against the end face of the gear, while the first guide tube 17 abuts against the side wall of the bearing plate 16. Due to the large weight of the large gear, after it is mounted on the shaft 1, the shaft 1 bends in the middle under gravity. This causes the lower half of the large gear to exert a compressive force on the corresponding first guide tube 17 and second guide tube 18. This compressive force is then exerted through the first guide tube 17 and the second guide tube 18. The pressure is transmitted through pipe 18 and adjusting nut 19 to the bearing plate 16 located near the root of shaft 1, and then from the bearing plate 16 to the position of shaft 1 near the root where it has strong bending resistance. Through the above structure, after the large gear is installed on shaft 1 and the centering operation is completed, the load on the shaft 1 away from the root can be reduced, and part of the bending force caused by the weight of the large gear itself can be transmitted to the position of shaft 1 near the root. This reduces the axial offset of the large gear when it rotates due to the bending of shaft 1, thereby reducing the impact on the grinding accuracy of the large gear.

[0024] like Figures 1 to 4As shown, the bearing plate 16 has multiple insertion holes 2 in its middle; the end of the first force guide tube 17 is fixedly connected to an insertion rod 21; multiple seals 22 are rotatably connected to the middle of the bearing plate 16; multiple threaded holes 23 are opened in the middle of the bearing plate 16; multiple round holes 24 are opened in the middle of the seals 22; during operation, since some gears have through holes in their middle, the positions of the first force guide tube 17 and the second force guide tube 18 need to be adjusted according to the position of the through holes in the middle of the installed gear. Before installing the gear, the insertion rod 21 can be inserted into the insertion hole 2 at a suitable position. After the insertion rod 21 enters the insertion hole 2, the first force guide tube 17 will not easily fall off the bearing plate 16. Thus, after the gear is installed, the first force guide tube 17 and the second force guide tube 18 already installed on the bearing plate 16 can be easily accessed and their positions adjusted. Then, the adjusting nut 19 is rotated to make the first force guide tube 17 and the second force guide tube 18... A guide tube 17 abuts against the end face of the gear. When the first guide tube 17 and the second guide tube 18 are not needed, the first guide tube 17 and the second guide tube 18 are removed from the support plate 16. Then, the seal 22 is rotated to cover multiple insertion holes 2. Subsequently, a bolt is screwed through the round hole 24 into the threaded hole 23 to keep the seal 22 closed over the insertion holes 2. With the above structure, the positions of multiple first guide tubes 17 and second guide tubes 18 can be easily adjusted according to the position of the through hole in the middle of the large gear. The first guide tubes 17 and the second guide tubes 18 can be pre-installed on the support plate 16 and will not easily fall off for easy access. When the first guide tubes 17 and the second guide tubes 18 are not needed, the seal 22 can be used to seal the insertion holes 2 to reduce the entry of external impurities and their adhesion to the inside of the insertion holes 2, which may cause inconvenience in the subsequent insertion of the insertion rod 21.

[0025] like Figures 1 to 4 As shown, a magnet 3 is fixed to the middle of the first force guide tube 17; the carrier plate 16 is made of magnetic metal material; during operation, when the first force guide tube 17 is first installed on the carrier plate 16 by inserting the insertion rod 21 into the insertion hole 2, the magnet 3 will attract the carrier plate 16 with the attraction force. Through the above structure, after the first force guide tube 17 is installed on the carrier plate 16, the occurrence of the first force guide tube 17 falling off can be further reduced, so that some extra first force guide tubes 17 and second force guide tubes 18 can be left on the carrier plate 16 and are difficult to fall off when the carrier plate 16 rotates.

[0026] like Figures 1 to 4As shown, an elastic rope 4 is fixed to the inner wall of the first force guide tube 17; the other end of the elastic rope 4 is fixed to the inner wall of the second force guide tube 18. During operation, when the adjusting nut 19 is rotated to move away from the second force guide tube 18, the second force guide tube 18 will automatically move with the adjusting nut 19 under the elastic pull of the elastic rope 4. After the total length of the first force guide tube 17 and the second force guide tube 18 is shortened, it will not easily extend. Through the above structure, when the first force guide tube 17 and the second force guide tube 18 are not in use, the occurrence of the first force guide tube 17 and the second force guide tube 18 extending arbitrarily can be reduced, thereby improving the convenience of carrying and storing the first force guide tube 17 and the second force guide tube 18.

[0027] like Figures 1 to 4 As shown, the insertion hole 2 is non-circular; the cross-sectional shape of the insertion rod 21 corresponds to that of the insertion hole 2. If both the insertion hole 2 and the insertion rod 21 are circular, the adjusting nut 19 needs to be held when rotating the first force guide tube 17 to prevent them from rotating synchronously. However, by setting the insertion hole 2 and the insertion rod 21 to corresponding non-circular cross-sections, it is not necessary to hold the first force guide tube 17 to limit its position when adjusting the position of the second force guide tube 18 by rotating the adjusting nut 19. It is also less likely that the first force guide tube 17 will rotate with the adjusting nut 19, thus improving the ease of use of the device.

[0028] like Figures 1 to 2 As shown, the centering sleeve 13 is made of spring steel. Through the above structure, the high elastic modulus and yield strength of spring steel can generate large elastic deformation, providing a more stable and accurate centering effect.

[0029] like Figure 4 As shown, the first force guide tube 17 and the second force guide tube 18 are made of alloy steel. Through the above structure, the strong compressive strength of alloy steel reduces the occurrence of bending deformation of the first force guide tube 17 and the second force guide tube 18 under stress.

[0030] During operation, the inner hole of the gear to be ground is fitted onto the outside of the centering expansion sleeve 13. At this time, the end face of the gear abuts against the floating adjusting ring 12. Then, the locking nut 15 is rotated to move the sleeve 14, causing the sleeve 14 to compress the centering expansion sleeve 13. The centering expansion sleeve 13 under compression will produce elastic deformation in the middle, thereby generating a large friction force on both the inner and outer surfaces of the centering expansion sleeve 13. This makes it difficult for relative displacement to occur between the gear and the shaft 1, and the gear is centered. Then, the first guide tube 17 and the second guide tube 18 are placed between the gear end face and the bearing plate 16 located near the root of the shaft 1. Then, the adjusting nut 19 is rotated to move the first guide tube 17. The middle part of the gear moves, causing the second guide tube 18 to move as well. The end of the second guide tube 18 abuts against the end face of the gear, while the first guide tube 17 abuts against the side wall of the bearing plate 16. Due to the large weight of the gear, after it is mounted on the shaft 1, gravity causes the middle part of the shaft 1 to bend. This causes the lower half of the gear to exert a compressive force on the corresponding first guide tube 17 and second guide tube 18. This pressure is transmitted through the first guide tube 17, the second guide tube 18, and the adjusting nut 19 to the bearing plate 16 located near the root of the shaft 1. From there, the pressure is transmitted to the more resilient part of the shaft 1 near the root. Since some gears have a... Because of the through holes, the positions of the first guide tube 17 and the second guide tube 18 need to be adjusted according to the position of the through hole in the middle of the gear after installation. Before installing the gear, the insert rod 21 can be inserted into the appropriate position of the insertion hole 2. After the insert rod 21 enters the insertion hole 2, the first guide tube 17 will not easily fall off the support plate 16. Thus, after the gear is installed, the first guide tube 17 and the second guide tube 18 already installed on the support plate 16 can be easily removed and their positions adjusted. Then, the adjusting nut 19 is rotated so that the first guide tube 17 abuts against the end face of the gear. When the first guide tube 17 and the second guide tube 18 are not needed, the first guide tube 17, The second guide tube 18 is removed from the support plate 16, and then the seal 22 is rotated to cover the multiple insertion holes 2. Then, a bolt is screwed through the round hole 24 into the threaded hole 23 to keep the seal 22 closed to the insertion hole 2. When the first guide tube 17 is first installed on the support plate 16 by inserting the insertion rod 21 into the insertion hole 2, the magnet 3 will attract the support plate 16 through the attraction force. When the adjusting nut 19 is rotated to move the adjusting nut 19 away from the second guide tube 18, the second guide tube 18 will automatically move with the adjusting nut 19 under the elastic pull of the elastic rope 4. After the total length of the first guide tube 17 and the second guide tube 18 is shortened, it will not easily extend.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A floating auxiliary positioning gear grinding device for large gears, comprising a shaft (1); characterized in that: A floating adjusting ring (12) is fitted in the middle of the shaft (1); a centering expansion sleeve (13) is fitted in the middle of the shaft (1); a sleeve (14) is fitted in the middle of the shaft (1); a locking nut (15) is threadedly connected to the middle of the shaft (1); a bearing plate (16) is fixedly connected to the middle of the shaft (1); a plurality of first force guide tubes (17) are detachably installed on the side wall of the bearing plate (16); a second force guide tube (18) is slidably connected to the middle of the first force guide tube (17); and an adjusting nut (19) is threadedly connected to the middle of the first force guide tube (17).

2. The floating auxiliary positioning gear grinding device for a large gear according to claim 1, characterized in that: The bearing plate (16) has multiple insertion holes (2) in the middle; the end of the first force guide tube (17) is fixedly connected to an insertion rod (21); the bearing plate (16) has multiple sealing strips (22) rotatably connected in the middle; the bearing plate (16) has multiple threaded holes (23) in the middle; the sealing strips (22) have multiple round holes (24) in the middle.

3. The floating auxiliary positioning gear grinding device for a large gear according to claim 1, characterized in that: A magnet (3) is fixed to the middle of the first force guide tube (17); the bearing plate (16) is made of magnetic metal material.

4. The floating auxiliary positioning gear grinding device for large gears according to claim 1, characterized in that: An elastic rope (4) is fixed to the inner wall of the first force guide tube (17); the other end of the elastic rope (4) is fixed to the inner wall of the second force guide tube (18).

5. The floating auxiliary positioning gear grinding device for a large gear according to claim 2, characterized in that: The insertion hole (2) is non-circular; the cross-sectional shape of the insertion rod (21) corresponds to that of the insertion hole (2).

6. The floating auxiliary positioning gear grinding device for a large gear according to claim 1, characterized in that: The centering expansion sleeve (13) is made of spring steel.

7. The floating auxiliary positioning gear grinding device for a large gear according to claim 1, characterized in that: The first force guide tube (17) and the second force guide tube (18) are made of alloy steel.

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