Horizontal bar quenching press machine for carburizing and secondary quenching of large-scale main shaft bearing ring

Abstract

The invention discloses a large-scale main shaft bearing ring carburizing secondary quenching horizontal bar quenching press machine, and relates to the technical field of heat treatment processing equipment, the large-scale main shaft bearing ring carburizing secondary quenching horizontal bar quenching press machine comprises a press machine base, a plurality of public expansion blocks are slidably arranged on the press machine base, and a cone is slidably arranged on the press machine base in the vertical direction; the diameter of the cone is gradually reduced in the direction close to the press machine base, the public expansion blocks are distributed in the circumferential direction of the cone, a power device used for driving the cone to slide is arranged on the press machine base, the outer side of each public expansion block is connected with a product expansion block, a cover plate is arranged on the cone, and a plurality of product pressing plates are arranged on the cover plate in a sliding mode. The product pressing plate is used for pressing the upper end face of the product. The problems of deformation and size control in the carburizing secondary quenching process of the large-size bearing ring can be effectively solved, the horizontal bar pull-down type structure and the quenching mode are adopted, the structure is simple, meanwhile, the device is easily matched with other equipment to achieve automation, and the market application prospect is increased.

Description

Technical Field

[0001] The present application relates to the technical field of heat treatment processing equipment, and in particular to a large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press. Background Art

[0002] The carburizing process of large spindle bearing rings is of great significance in the field of mechanical manufacturing, especially in the wind power generation industry. With the rapid development of the wind power industry, the requirements for large spindle bearings are getting higher and higher, especially for the precision control of their internal quality and external dimensions. However, the existing carburizing secondary quenching equipment and technology face many challenges in processing large-sized bearing rings and are difficult to meet the needs of modern industry.

[0003] At present, the commonly used carburizing secondary quenching methods in the industry mainly include manual die-set manual quenching, manual die-set automatic quenching, and automatic die-set automatic quenching. Although these traditional methods can achieve the purpose of carburizing secondary quenching to a certain extent, there are still some shortcomings in the specific operation process. For example, the traditional manual die-set manual quenching method is completely dependent on manual operation, with low production efficiency and delayed quenching time, which makes it difficult to control the quality of product surface carbides, hardness, etc., and the product quality is unstable. There are also widespread problems such as high labor intensity, poor working environment and safety hazards. Although manual die-set automatic quenching has introduced a certain degree of automation, it still requires manual intervention and relies on manual die-set preload, which cannot effectively control product deformation and dimensional uniformity. The existing automatic die-set automatic quenching equipment is also powerless when facing oversized bearing rings (diameter exceeding 2 meters), and cannot meet the carburizing heat treatment needs of bearing rings in the wind power industry. Therefore, it is urgent to develop a carburizing secondary quenching process that can adapt to large-size bearing rings, and at the same time can accurately control product deformation and dimensional uniformity and ensure product quality stability. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press.

[0005] The present application provides a large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press, which adopts the following technical solution: A large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press, comprising a press base, a plurality of common expansion blocks are slidably arranged on the press base, and the press base is respectively provided with an expansion block pushing mechanism for driving each of the common expansion blocks to slide, a cone is slidably arranged on the press base in a vertical direction, the diameter of the cone gradually decreases along the direction approaching the press base, and each of the common expansion blocks is distributed along the circumference of the cone, a power device for driving the cone to slide is arranged on the press base, a product expansion block is connected to the outer side of each of the common expansion blocks, and the product expansion block is used to press against the inner diameter surface of the product, a cover plate is arranged on the cone, a plurality of product pressing plates are slidably arranged on the cover plate, and a pressing plate pushing mechanism for driving each of the product pressing plates to slide is respectively arranged on the cover plate, and the product pressing plate is used to press the upper end surface of the product.

[0006] Optionally, a plurality of ribs are fixedly provided on the press base, and the upper end surfaces of the ribs are flush.

[0007] Optionally, one end of each common expansion block close to each other is provided with a guiding inclined surface matched with the cone.

[0008] Optionally, the product expansion block can be detachably arranged on the common expansion block.

[0009] Optionally, a central column is passed through the cone, a cover connecting column is fixedly provided on the top of the central column, the cover is slidably sleeved on the cover connecting column, and an elastic member is provided on the cover connecting column for driving the cover to slide toward the central column.

[0010] Optionally, the side wall of the cover plate connecting column is provided with an external thread, an adjusting nut is threadedly connected to the cover plate connecting column, and the adjusting nut is arranged above the cover plate.

[0011] Optionally, the elastic member includes a disc spring, which is sleeved on the cover plate connecting column and located between the adjusting nut and the cover plate. A partition is sleeved on the cover plate connecting column and the partition is arranged at the bottom of the adjusting nut. One end of the disc spring abuts against the cover plate, and the other end of the disc spring abuts against the partition.

[0012] Optionally, the expansion block pushing mechanism includes a connecting rod and a first driving member, the connecting rod is slidably arranged on the press base and fixedly connected to the corresponding common expansion block, and the first driving member is used to drive the connecting rod to slide.

[0013] Optionally, the pressure plate pushing mechanism includes a push plate, a suspension rod and a second driving member, the push plate is slidably arranged on the top of the cover plate, the suspension rod is fixedly arranged on the push plate, the cover plate is provided with a through hole for the suspension rod to pass through, and the suspension rod is fixedly connected to the corresponding product pressure plate, and the second driving member is used to drive the push plate to slide and drive the product pressure plate to slide.

[0014] Optionally, the product pressing plate is detachably connected to the suspension rod.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press of the present application can effectively solve the deformation and size control problems existing in the carburizing secondary quenching process of large-size bearing rings. Specifically, when in use, the cone, cover plate and product pressing plate are driven to rise under the action of the power device, so that the cone is separated from each common expansion block, and each expansion block pushing mechanism is used to drive each common expansion block to approach each other, and then each pressing plate pushing mechanism is contracted to bring each product pressing plate together, and the product is hoisted to the press base through a special hoist and located outside each product expansion block. After that, the pressing plate pushing mechanism drives each product pressing plate to slide outward and is located above the product, and the cone and cover plate are driven down by the power device. Each common expansion block moves away from each other under the push of the cone, driving each product expansion block to press against the inner diameter surface of the product. At the same time, each product pressing plate presses the upper end surface of the product, so as to locate and correct the position of the product, and put the inner diameter surface and end surface of the product under restriction or pressure, effectively controlling the deformation and size of the product during the quenching process.

[0016] 2. This application makes the product expansion block detachable and arranged on the common expansion block, so that the press can flexibly replace the corresponding product expansion block according to the bearing rings of different sizes and shapes, thereby adapting to the processing requirements of products of various specifications. This design not only improves the versatility and flexibility of the equipment, but also simplifies the maintenance and adjustment process, reducing production costs and time.

[0017] 3. This application further increases practicality by sliding the product pressure plate on the cover plate connecting column at the top of the cone and controlling the maximum distance between the cover plate and the cone by adjusting the nut, so as to adapt to the press-fitting of products of different sizes. Furthermore, the disc spring is set to provide sufficient support force between the cover plate and the cone. When the product pressure plate presses the product, as the cover plate slides down, the product pressure plate first pre-presses the product through the elastic force of the disc spring to control the moving direction of the product. As the product expansion block corrects the position of the product, the compression force of the product pressure plate gradually increases, and finally the product pressure plate completely compresses the upper end surface of the product to limit the position of the product, avoiding the product warping phenomenon when the product expansion block is pressed against the inner diameter surface of the product, or because the compression force of the product pressure plate is too large, resulting in the inability of the cover plate and the cone to continue to move down, and then the inability to push the product expansion block, so that the product expansion block cannot effectively press against the inner diameter surface of the product and limit the inner diameter surface of the product.

[0018] 4. This application adopts a design in which the product pressure plate is detachably connected to the hanger, so that the product pressure plate can be replaced and adjusted according to bearing rings of different sizes and shapes, further improving the flexibility and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the expansion block pushing mechanism used in the embodiment of the present application; Figure 3 It is a structural schematic diagram used to express the pressure plate pushing mechanism in an embodiment of the present application.

[0020] Explanation of the reference numerals in the accompanying drawings: 1. Press base; 11. Power device; 12. Support column; 13. Rib; 14. Sleeve; 15. Hydraulic cylinder connecting column; 16. Connecting rod; 17. First driving member; 2. Common expansion block; 21. Product expansion block; 3. Cone; 31. Center column; 32. Cover plate connecting column; 33. Adjusting nut; 34. Disc spring; 35. Partition; 4. Cover plate; 41. Product pressing plate; 411. Threaded hole; 42. Push plate; 43. Hanging rod; 431. Screw; 432. Mounting nut; 44. Second driving member; 45. Through hole; 46. Contour ring. DETAILED DESCRIPTION

[0021] The following will be combined with the attached Figure 1 -Attached Figure 3 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0022] The inventor of this application has found that the existing carburizing and secondary quenching equipment and technology face many challenges when processing large-sized bearing rings, and it is difficult to effectively solve the deformation and size control problems of large-sized bearing rings during the carburizing and secondary quenching process. To this end, this application discloses a large-scale spindle bearing ring carburizing and secondary quenching single-bar quenching press, which mainly adopts the following scheme: The present application embodiment discloses a large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press. Figure 1, including a press base 1, a plurality of common expansion blocks 2 are slidably arranged on the press base 1, a cone 3 is slidably arranged on the press base 1 in the vertical direction, the diameter of the cone 3 gradually decreases along the direction close to the press base 1, each common expansion block 2 is distributed along the circumference of the cone 3, a power device 11 for driving the cone 3 to slide is arranged on the press base 1, a product expansion block 21 is connected to the outer side of each common expansion block 2, a cover plate 4 is arranged on the cone 3, and a plurality of product pressing plates 41 are slidably arranged on the cover plate 4. This structural design can effectively control the deformation and dimensional uniformity of large-size bearing rings during carburizing secondary quenching, thereby improving product quality stability.

[0023] Reference Figure 1 The press base 1 is used as the supporting foundation of the entire system and is made of high-strength steel to ensure that it will not deform when subjected to heavy loads. A support column 12 is fixedly connected to the bottom of the press base 1. A plurality of ribs 13 are fixedly arranged on the press base 1. The upper end surfaces of the ribs 13 are flush to enhance the rigidity and stability of the press base 1. The common expansion block 2 and the product expansion block 21 are both slidably arranged on the ribs 13. This makes the sliding of the common expansion block 2 and the product expansion block 21 smoother.

[0024] Reference Figure 1 The cone 3 is made of high-strength alloy steel and has good wear resistance and fatigue resistance. The power device 11 adopts a hydraulic cylinder, which is fixedly arranged at the bottom of the press base 1. A sleeve 14 is fixedly arranged at the bottom of the press base 1. A hydraulic cylinder connecting column 15 is slidably penetrated in the sleeve 14. A mounting hole for the hydraulic cylinder connecting column 15 to pass through is opened on the press base 1. The cone 3 is fixed to the hydraulic cylinder connecting column 15 by bolts.

[0025] Reference Figure 1 , 2 The common expansion block 2 is made of high-strength alloy steel, has good wear resistance and fatigue resistance, and can maintain stable performance during frequent telescopic movements. The common expansion block 2 is provided with a guiding slope adapted to the cone 3 at one end close to each other, so that the common expansion block 2 can expand or contract smoothly when the cone 3 moves up and down.

[0026] Reference Figure 2The product expansion block 21 is fixed on the common expansion block 2 by bolts and is detachably connected to the common expansion block 2, so that the corresponding product expansion block 21 can be replaced according to the bearing rings of different sizes. The product expansion block 21 is also made of high-strength alloy steel, and the surface is precision ground, and the outer wall of the product expansion block 21 is provided with multiple layers of steps to adapt to the inner diameter surface of the bearing ring to ensure that it has a high degree of fit when in contact with the inner diameter surface of the bearing ring. And by detachably setting the product expansion block 21 on the common expansion block 2, the press can flexibly replace the corresponding product expansion block 21 according to the bearing rings of different sizes and shapes, so as to adapt to the processing requirements of products of various specifications. This design not only improves the versatility and flexibility of the equipment, but also simplifies the maintenance and adjustment process, and reduces production costs and time.

[0027] Reference Figure 2 The press base 1 is provided with a block push mechanism for driving each common block 2 to slide. Specifically, the block push mechanism includes a connecting rod 16 and a first driving member 17. The connecting rod 16 is slidably arranged on the press base 1 and is fixedly connected to the corresponding common block 2 by bolts. The first driving member 17 adopts a pneumatic cylinder, and the pneumatic cylinder is fixedly arranged at the bottom of the press base 1. The piston rod of the pneumatic cylinder is fixedly connected to the connecting rod 16 to drive the connecting rod 16 to slide. The first driving member 17 can also be a hydraulic cylinder, an electric push rod, a linear motor, etc.

[0028] Reference Figure 1 , 2 A central column 31 is slidably provided in the cone 3, a cover plate connecting column 32 is fixedly provided at the top of the central column 31, the central column 31 is parallel to the length direction of the cover plate connecting column 32, the cover plate 4 is slidably sleeved on the cover plate connecting column 32 and slides along the length direction of the cover plate connecting column 32, the side wall of the cover plate connecting column 32 is provided with an external thread, an adjusting nut 33 is threadedly connected to the cover plate connecting column 32, and the adjusting nut 33 is arranged above the cover plate 4. By rotating the adjusting nut 33, the distance between the cover plate 4 and the cone 3 can be adjusted, and then the extension length of the product expansion block 21 can be adjusted, which is suitable for bearing rings of different sizes.

[0029] Reference Figure 2 , an elastic member for driving the cover plate 4 to slide toward the center column 31 is provided on the cover plate connecting column 32. The elastic member is a disc spring 34, which is sleeved on the cover plate connecting column 32 and located between the adjusting nut 33 and the cover plate 4. A partition 35 is sleeved on the cover plate connecting column 32, and the partition 35 is arranged at the bottom of the adjusting nut 33, and one end of the disc spring 34 abuts against the cover plate 4, and the other end abuts against the partition 35. The disc spring 34 has greater elasticity and a longer service life, and can effectively buffer the impact force generated by the cover plate 4 during the sliding process. In addition, other types of elastic elements such as coil springs or airbags can also be selected to meet different working conditions.

[0030] The disc spring 34 is provided to ensure sufficient supporting force between the cover plate 4 and the cone 3. When the product pressing plate 41 presses the product, as the cover plate 4 slides down, the product pressing plate 41 first pre-presses the product through the elastic force of the disc spring 34 to control the moving direction of the product. As the product expansion block 21 corrects the position of the product, the pressing force of the product pressing plate 41 gradually increases. Finally, the product pressing plate 41 completely presses the upper end surface of the product to limit the product and avoid the product warping phenomenon when the product expansion block 21 is pressed against the inner diameter surface of the product, or because the pressing force of the product pressing plate 41 is too large, the cover plate 4 and the cone 3 cannot continue to move downward, and thus cannot push the product expansion block 21, so that the product expansion block 21 cannot effectively press against the inner diameter surface of the product and limit the inner diameter surface of the product.

[0031] Reference Figure 2 , 3 The cover plate 4 is provided with a plate pushing mechanism for driving each product platen 41 to slide. Specifically, the plate pushing mechanism includes a push plate 42, a suspension rod 43 and a second driving member 44. The push plate 42 is slidably arranged on the top of the cover plate 4. There are multiple suspension rods 43, which are all fixedly arranged at the bottom of the push plate 42. The cover plate 4 is provided with a through hole 45 for the suspension rod 43 to pass through, and the suspension rod 43 is fixedly connected to the corresponding product platen 41. The second driving member 44 adopts a pneumatic cylinder, which is fixedly arranged on the top of the cover plate 4, and the piston rod of the pneumatic cylinder is fixedly connected to the push plate 42, which is used to drive the push plate 42 to slide, thereby driving the corresponding product platen 41 to slide. The second driving member 44 can also be selected from a hydraulic cylinder, an electric push rod, a linear motor, etc.

[0032] Reference Figure 3 In order to facilitate the replacement or maintenance of the product pressing plate 41, the product pressing plate 41 is detachably connected to the suspension rod 43. Specifically, screws 431 are fixedly provided at both ends of the suspension rod 43. A threaded hole 411 matching the screws 431 is provided on the product pressing plate 41. The screw 431 on one side of the suspension rod 43 is inserted into the threaded hole 411 of the product pressing plate 41 and is threadedly matched with the product pressing plate 41. The screw 431 on the side of the suspension rod 43 away from the product pressing plate 41 passes through the push plate 42, and a mounting nut 432 is threadedly connected to the screw 431 passing through the push plate 42. By designing the product pressing plate 41 and the suspension rod 43 to be detachably connected, the product pressing plate 41 can be replaced and adjusted according to bearing rings of different sizes and shapes, further improving the flexibility and adaptability of the equipment.

[0033] Reference Figure 3A contour ring 46 is also provided between the product pressing plate 41 and the cover plate 4. The contour ring 46 ensures that the lower end surfaces of the product pressing plates 41 are located in the same plane and ensures the structural stability of the product pressing plates 41. Furthermore, by replacing the contour rings 46 of different lengths and adjusting the height difference of the product pressing plates 41, the press-fitting of special-shaped products can be achieved, further increasing the practicality and flexibility of the equipment.

[0034] The implementation principle of a large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press according to the embodiment of the present application is as follows: when in use, the hydraulic cylinder drives the cone 3, the cover plate 4 and the product pressing plate 41 to rise under the action of the hydraulic system, so that the cone 3 is separated from each common rising block 2, and each common rising block 2 is driven to move closer to each other through each rising block pushing mechanism, and then each pressing plate pushing mechanism is contracted to bring each product pressing plate 41 closer to each other, and the product is hoisted to the rib 13 of the press base 1 through a special hoist, and is located outside each product rising block 21. After that, the pressure plate pushing mechanism drives each product pressure plate 41 to slide outward and is located above the product, and drives the cone 3 and the cover plate 4 to slide down through the hydraulic cylinder. The common rising blocks 2 are pushed away from each other by the cone 3, driving the product rising blocks 21 to press against the inner diameter surface of the product. At the same time, the upper end surface of the product is pressed by each product pressure plate 41, so as to locate and correct the position of the product, and make the inner diameter surface and end surface of the product under restriction or pressure, so as to effectively control the deformation and size of the product during the quenching process.

[0035] After the product quenching is completed, each platen pushing mechanism retracts each product platen 41 into place; then, under the action of the hydraulic system, the hydraulic cylinder drives the cone 3, the cover plate 4 and each platen to rise; each common riser 2 and the product riser 21 are retracted to each other under the action of the riser pushing mechanism, and the demoulding is completed, and the press is in the basic position. This large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press effectively solves the deformation and size control problems of large-size bearing rings during carburizing secondary quenching.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press, characterized in that: The invention comprises a press base (1), on which a plurality of common expansion blocks (2) are slidably arranged, and on which expansion block pushing mechanisms for driving each of the common expansion blocks (2) to slide are respectively arranged, and on which a cone (3) is slidably arranged in a vertical direction on the press base (1), and the diameter of the cone (3) gradually decreases in a direction approaching the press base (1), and each of the common expansion blocks (2) is distributed along the circumference of the cone (3), and on which a mechanism for driving the common expansion blocks (2) to slide is arranged. A power device (11) for sliding the cone (3), each of the common expansion blocks (2) is connected to a product expansion block (21) on its outer side, and the product expansion block (21) is used to press against the inner diameter surface of the product, a cover plate (4) is provided on the cone (3), a plurality of product pressing plates (41) are slidably provided on the cover plate (4), and a pressing plate pushing mechanism for driving each of the product pressing plates (41) to slide is respectively provided on the cover plate (4), and the product pressing plates (41) are used to press against the upper end surface of the product.

2. A large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: A plurality of ribs (13) are fixedly arranged on the press base (1), and the upper end surfaces of the ribs (13) are flush.

3. A large-scale spindle bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: One end of each of the common expansion blocks (2) that is close to each other is provided with a guiding inclined surface that matches the cone (3).

4. A large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: The product expansion block (21) is detachably arranged on the common expansion block (2).

5. The large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: A central column (31) is inserted into the cone (3), a cover plate connecting column (32) is fixedly arranged at the top of the central column (31), the cover plate (4) is slidably sleeved on the cover plate connecting column (32), and an elastic member is arranged on the cover plate connecting column (32) for driving the cover plate (4) to slide in a direction close to the central column (31).

6. A large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 5, characterized in that: The side wall of the cover plate connecting column (32) is provided with an external thread, an adjusting nut (33) is threadedly connected to the cover plate connecting column (32), and the adjusting nut (33) is arranged above the cover plate (4).

7. A large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 6, characterized in that: The elastic member comprises a disc spring (34), the disc spring (34) is sleeved on the cover plate connecting column (32) and is located between the adjusting nut (33) and the cover plate (4), a partition plate (35) is sleeved on the cover plate connecting column (32), and the partition plate (35) is arranged at the bottom of the adjusting nut (33), one end of the disc spring (34) is in contact with the cover plate (4), and the other end of the disc spring (34) is in contact with the partition plate (35).

8. The large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: The expansion block pushing mechanism comprises a connecting rod (16) and a first driving member (17); the connecting rod (16) is slidably arranged on the press base (1) and is fixedly connected to the corresponding common expansion block (2); and the first driving member (17) is used to drive the connecting rod (16) to slide.

9. The large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 1, characterized in that: The pressure plate pushing mechanism includes a push plate (42), a suspension rod (43) and a second driving member (44); the push plate (42) is slidably arranged on the top of the cover plate (4); the suspension rod (43) is fixedly arranged on the push plate (42); a through hole (45) for the suspension rod (43) to pass through is opened on the cover plate (4); and the suspension rod (43) is fixedly connected to the corresponding product pressure plate (41); the second driving member (44) is used to drive the push plate (42) to slide and drive the product pressure plate (41) to slide.

10. A large-scale main shaft bearing ring carburizing secondary quenching single-bar quenching press according to claim 9, characterized in that: The product pressing plate (41) is detachably connected to the suspension rod (43).

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