Bearing for grinding workpieces

Abstract

The utility model relates to the technical field of grinding bearings, and discloses a grinding workpiece machining bearing which comprises an outer ring shaft, a bottom plate is fixedly connected to the bottom side of the outer ring shaft, stand columns are fixedly connected to the four corners of the top side of the bottom plate, clamping columns are slidably connected to the top ends of the stand columns, and a top plate is fixedly connected to the top sides of the clamping columns. Bolts are detachably connected to the four corners of the top plate, a plurality of semicircular blocks are fixedly connected to the side, close to the top plate, of the outer ring shaft, a needle bearing is movably connected to the side, close to the top plate, of every two semicircular blocks, and an outer sealing ring is fixedly connected to the bottom side of the top plate. According to the utility model, the number of the required needle bearings placed between each pair of semicircular blocks is adjusted, so that the problems that the load of a single needle bearing is increased and the abrasion is accelerated due to insufficient needle bearings and the vibration of the bearing during operation is increased due to excessive needle bearings are avoided, and the machining precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding bearings, in particular to a bearing for grinding workpieces. Background Art

[0002] Grinding bearings refer to high-precision or high-precision bearings used in grinding machine spindles, usually with P4 grade accuracy. These bearings play a vital role in machine tools, especially in the grinding process, they ensure processing accuracy and efficiency

[0003] After searching, the Chinese patent document announcement number: CN206874644U discloses a high-precision bearing, including a ceramic inner ring, a steel outer ring and a full needle roller bearing arranged between the ceramic inner ring and the steel outer ring, the steel outer ring is spliced ​​by a front outer ring and a rear outer ring, the rear end of the front outer ring is smooth and concavely provided with an insertion cavity, the outer end surface of the insertion cavity is provided with a groove and the inner end surface of the insertion cavity is inclined downward; the front end of the rear outer ring is smooth and convexly provided with a snap ring, the front side of the snap ring is provided with a barb, the snap ring is inserted into the insertion cavity and the barb is inserted into the groove; and also includes a low-melting point alloy ring, the low-melting point alloy ring is placed in the insertion cavity at the front side of the snap ring during assembly, and is reshaped after being heated and filled between the snap ring and the inner end surface of the insertion cavity. The beneficial effect of this utility model is that the outer ring is divided into two for easy beading by adopting the characteristics of low-melting point alloy low-temperature reshaping and good heat resistance of ceramic metal, and the outer ring is heated as a whole after beading to realize the splicing of the outer ring, so that there is no need to open the beading mouth.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the above patent mentioned in the beneficial effects: "Using the characteristics of low-melting-point alloy low-temperature reshaping and ceramic metal good heat resistance, the outer ring is divided into two for easy installation of beads. After the beads are installed, the outer ring is heated as a whole to achieve splicing, thereby eliminating the need to open the bead installation mouth." Although the above patent facilitates the installation of beads by preventing splicing, it is impossible to adjust the number of needle bearings required for processing during the specific operation process. An insufficient number of needle bearings will increase the load of a single needle bearing and accelerate wear, thereby affecting the processing accuracy of the screw. An excessive number of needle bearings will increase the vibration of the bearing during operation and will also lead to a decrease in processing accuracy. Therefore, in response to the above deficiencies, a bearing for grinding workpieces is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a bearing for grinding workpieces, aiming to improve the problem that the prior art cannot adjust the needle roller bearings according to the processing requirements, resulting in too many or too few needle roller bearings leading to reduced processing accuracy.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bearing for grinding workpieces comprises an outer ring shaft, the bottom side of the outer ring shaft is fixedly connected to a bottom plate, the four corners of the top side of the bottom plate are fixedly connected to columns, the top of the column is slidably connected to a clamping column, the top sides of multiple clamping columns are fixedly connected to a top plate, the four corners of the top plate are detachably connected to bolts, the outer ring shaft and the side adjacent to the top plate are fixedly connected to multiple semicircular blocks, the adjacent sides of every two semicircular blocks are movably connected to a needle bearing, the bottom side of the top plate is fixedly connected to an outer sealing ring, the bottom side of the top plate is fixedly connected to an inner sealing ring, the adjacent sides of multiple needle bearings are in contact with an inner ring shaft, an oil storage chamber is opened inside the inner ring shaft, multiple needle balls are movably connected inside the inner ring shaft, and an oil inlet hole begins to be provided on the front side of the oil storage chamber.

[0008] As a further description of the above technical solution:

[0009] The inner walls of the outer ring shaft are all provided with reset components, the far sides of the reset components are fixedly connected with right-angle blocks, the adjacent sides of multiple right-angle blocks are fixedly connected with triangular blocks, the adjacent sides of every two triangular blocks are fixedly connected with a limit plate, and the adjacent sides of multiple limit plates are fixedly connected with force beads.

[0010] As a further description of the above technical solution:

[0011] The reset assembly comprises a fixed cylinder, the inner wall of which is slidably connected to two circular plates, and adjacent sides of every two fixed cylinders are fixedly connected to a spring.

[0012] As a further description of the above technical solution:

[0013] The outside of each two right-angle blocks is slidably connected to the inner wall of one of the fixed cylinders, and the far sides of each two circular plates are respectively fixedly connected to the near sides of each two right-angle blocks.

[0014] As a further description of the above technical solution:

[0015] The exteriors of the plurality of limit plates are respectively slidably connected to the inner walls around the outer ring shaft, and the exteriors of the plurality of force-bearing beads are respectively slidably connected to the inner walls around the outer ring shaft.

[0016] As a further description of the above technical solution:

[0017] The outer side of the outer sealing ring is slidably connected to the inner side of the outer ring shaft, and the inner wall of the inner sealing ring is slidably connected to the outer side of the inner ring shaft.

[0018] As a further description of the above technical solution:

[0019] The outer parts of the plurality of bolts are respectively threadedly connected to the inner walls around the top plate, and the outer parts of the bolts are threadedly connected to the inner walls of the columns.

[0020] As a further description of the above technical solution:

[0021] The outer parts of the plurality of needle roller bearings are movably connected to the inner side of the outer ring shaft, and the outer parts of the plurality of needle roller bearings are in contact with the adjacent side of the plurality of force-bearing beads.

[0022] The utility model has the following beneficial effects:

[0023] In the utility model, the precision of the bearings is improved by changing the process of manufacturing the stamping parts into grinding parts; at the same time, by adjusting the number of needle roller bearings required to be placed between each pair of semicircular blocks, it is avoided that insufficient number of needle roller bearings will increase the load of a single needle roller bearing and accelerate the wear, and that excessive number of needle roller bearings will increase the vibration of the bearing during operation, thereby improving the processing precision.

[0024] In the utility model, the needle bearing contacts the needle ball during operation to bring the lubricating oil inside the outer ring shaft to the needle bearing, thereby reducing the friction of the needle bearing and extending the service life of the needle bearing. The outer sealing ring and the inner sealing ring further seal the needle bearing after forming a closed space, thereby further extending the service life of the needle bearing.

[0025] 3. In the utility model, elastic potential energy is stored by the spring, and then a force in the opposite direction is given to the force-bearing bead to adapt to the slight dimensional changes of the bearing due to temperature changes or periodic loads. The use of the spring can compensate for these dimensional changes while taking into account all the advantages of the spring preload, ensuring that the bearing continues to work stably, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of a bearing for grinding a workpiece proposed by the utility model;

[0027] Figure 2 This is a schematic diagram of the outer ring shaft structure of a bearing for grinding a workpiece proposed by the utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the inner ring shaft of a bearing for grinding workpieces proposed by the utility model;

[0029] Figure 4 This is a schematic diagram of the top plate structure of a bearing for grinding workpieces proposed by the utility model;

[0030] Figure 5The utility model is a schematic diagram of the internal structure of a fixed cylinder of a bearing for grinding workpieces.

[0031] Legend:

[0032] 1. Outer ring shaft; 2. Bottom plate; 3. Vertical column; 4. Clamping column; 5. Top plate; 6. Bolt; 7. Semicircular block; 8. Outer sealing ring; 9. Inner sealing ring; 10. Inner ring shaft; 11. Oil storage chamber; 12. Oil inlet hole; 13. Needle ball; 14. Needle bearing; 15. Fixed cylinder; 16. Round plate; 17. Spring; 18. Right-angle block; 19. Triangle block; 20. Limit plate; 21. Force-bearing ball. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a bearing for grinding workpieces, including an outer ring shaft 1, and an inner ring shaft 10, which improves the accuracy of the bearing by changing the stamping parts into grinding workpieces. The bottom side of the outer ring shaft 1 is fixedly connected with a bottom plate 2 for sealing the internal components. The four corners of the top side of the bottom plate 2 are fixedly connected with columns 3 for providing support for fixation. The top of the column 3 is slidably connected with a clamping column 4, and the top sides of multiple clamping columns 4 are fixedly connected with a top plate 5. The clamping column 4 can move up and down inside the column 3 for easy clamping and fixing. The outer sides of multiple bolts 6 are respectively threadedly connected to the four corners of the top plate 5. The inner wall is used to fix the top plate 5. The external thread of the bolt 6 is connected to the inner wall of the column 3 to seal and fix the bottom plate 2 and the top plate 5 to the inner ring shaft 10. The four corners of the top plate 5 are detachably connected with the bolts 6. The outer ring shaft 1 and the adjacent side of the top plate 5 are fixedly connected with multiple semicircular blocks 7 for clamping and fixing different numbers of needle bearings 14. A needle bearing 14 is movably connected to the adjacent side of every two semicircular blocks 7. The external parts of the multiple needle bearings 14 are movably connected to the inner side of the outer ring shaft 1 and can roll freely on the inner side of the outer ring shaft 1, which reduces friction and improves the working efficiency of the bearing.

[0035] Reference Figure 2 - Figure 4An outer sealing ring 8 is fixedly connected to the bottom side of the top plate 5 for sealing the needle bearing 14 after forming a closed space. An inner sealing ring 9 is fixedly connected to the bottom side of the top plate 5 for blocking the oil inlet hole 12 to prevent the lubricating oil from flowing out. An inner ring shaft 10 is in contact with the adjacent side of multiple needle bearings 14. The outer side of the outer sealing ring 8 is slidably connected to the inner side of the outer ring shaft 1 to improve the sealing performance of the outer ring shaft 1. The inner wall of the inner sealing ring 9 is slidably connected to the outer side of the inner ring shaft 10. An oil storage chamber 11 is opened inside the inner ring shaft 10 for preserving the lubricating oil. A plurality of needle balls 13 are movably connected inside the inner ring shaft 10 for transferring the oil stored in the outer ring shaft 1 to the needle bearing 14. An oil inlet hole 12 is provided on the front side of the oil storage chamber 11 to facilitate pouring oil into the inner part of the outer ring shaft 1.

[0036] Reference Figure 1 , Figure 2 and Figure 5 The inner walls of the outer ring shaft 1 are all provided with reset components, which include a fixed cylinder 15, and the inner wall of the fixed cylinder 15 is slidably connected to two circular plates 16. The circular plates 16 can slide horizontally due to the restriction of the fixed cylinder 15. A spring 17 is fixedly connected to the adjacent side of every two fixed cylinders 15. The two sides of the spring 17 are fixed so that the spring 17 can be evenly stressed. A right-angle block 18 is fixedly connected to the distant side of the reset component. The outer sides of every two right-angle blocks 18 are slidably connected to the inner wall of one of the fixed cylinders 15. The right-angle block 18 can slide horizontally due to the restriction of the fixed cylinder 15. The distant sides of every two circular plates 16 are respectively fixedly connected to the adjacent sides of every two right-angle blocks 18.

[0037] The displacement of the triangular block 19 is used to push the right-angle block 18 to slide. The adjacent sides of the multiple right-angle blocks 18 are fixedly connected with the triangular blocks 19. The adjacent sides of every two triangular blocks 19 are fixedly connected with a limit plate 20. After the limit plate 20 is subjected to force, the triangular block 19 is pushed to slide. The adjacent sides of the multiple limit plates 20 are fixedly connected with force beads 21. After the force beads 21 are subjected to force, the limit plates 20 are pushed to slide. The outsides of the multiple needle bearings 14 are in contact with the adjacent sides of the multiple force beads 21. The outsides of the multiple limit plates 20 are respectively slidably connected to the surrounding inner walls of the outer ring shaft 1. The outsides of the multiple force beads 21 are respectively slidably connected to the surrounding inner walls of the outer ring shaft 1. Through the restriction of the outer ring shaft 1, the force beads 21 and the limit plate 20 can slide horizontally.

[0038] Working principle: We first improve the precision of the bearings by changing the stamping parts into grinding parts in the process of making bearings. During assembly, the outer ring shaft 1 is used as the basis, and the bottom plate 2 is fixed at the bottom of the outer ring shaft 1 as a support. Then, multiple semicircular blocks 7 on the top side of the bottom plate 2 are used to provide support for the needle roller bearing 14. After the needle roller bearing 14 is placed, the inner ring shaft 10 is clamped on the adjacent side of the multiple semicircular blocks 7, and then the top plate 5 is used to cover the top side of the inner ring shaft 10, and the clamping column 4 is clamped with the inner wall of the column 3, and finally it is fixed with bolts 6. During this process, the number of required needle roller bearings 14 placed between each pair of semicircular blocks 7 can be adjusted according to the different parts to be processed, so as to Avoiding that insufficient number of needle roller bearings 14 will increase the load of a single needle roller bearing 14 and accelerate wear, and that excessive number of needle roller bearings 14 will increase the vibration and noise level of the bearing during operation, thereby improving the processing accuracy, and at the same time, the oil storage cavity 11 starting from the inside of the inner ring shaft 10 stores lubricating oil in advance, and then the lubricating oil inside the outer ring shaft 1 is brought to the needle roller bearing 14 through the contact with the needle ball 13 during operation, reducing the friction of the needle roller bearing 14, thereby extending the service life of the needle roller bearing 14, and further sealing the needle roller bearing 14 after forming a closed space by using the outer sealing ring 8 and the inner sealing ring 9, thereby further extending the service life of the needle roller bearing 14;

[0039] During the operation of the device, the inner ring shaft 10 drives the bottom plate 2 and the top plate 5, so that the needle bearing 14 can rotate on the inner side of the outer ring shaft 1. At this time, the needle bearing 14 will contact multiple force-bearing beads 21, and then the force-bearing beads 21 will be forced to push the limit plate 20 to slide, and then drive the triangular block 19 to slide, thereby driving the right-angle block 18 to slide. Each pair of right-angle blocks 18 pushes a circular plate 16 to slide and the spring 17 to slide, and then the spring 17 will store elastic potential energy, and then give the force-bearing beads 21 a force in the opposite direction to adapt to the slight dimensional changes of the bearing due to temperature changes or periodic loads. The use of spring 17 can compensate for these dimensional changes while taking into account all the advantages of the spring 17 preload, ensuring that the bearing continues to work stably, thereby improving the adaptability of the device.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing for grinding workpieces, comprising an outer ring shaft (1), characterized in that: The bottom side of the outer ring shaft (1) is fixedly connected to a bottom plate (2), the top four corners of the bottom plate (2) are fixedly connected to columns (3), the tops of the columns (3) are slidably connected to clamping columns (4), the top sides of a plurality of clamping columns (4) are fixedly connected to a top plate (5), the four corners of the top plate (5) are detachably connected to bolts (6), the outer ring shaft (1) and the top plate (5) are fixedly connected to a plurality of semicircular blocks (7) on the adjacent side, and the adjacent sides of every two of the semicircular blocks (7) are fixedly connected to each other. A needle bearing (14) is movably connected to the side of the top plate (5), an outer sealing ring (8) is fixedly connected to the bottom side of the top plate (5), an inner sealing ring (9) is fixedly connected to the bottom side of the top plate (5), a plurality of needle bearings (14) are in contact with an inner ring shaft (10) on adjacent sides, an oil storage chamber (11) is provided inside the inner ring shaft (10), a plurality of needle balls (13) are movably connected inside the inner ring shaft (10), and an oil inlet hole (12) is provided at the front side of the oil storage chamber (11).

2. A bearing for grinding a workpiece according to claim 1, characterized in that: The inner walls of the outer ring shaft (1) are all provided with reset components, and the far side of the reset components is fixedly connected to a right-angle block (18), and the adjacent sides of a plurality of the right-angle blocks (18) are fixedly connected to a triangular block (19), and the adjacent sides of every two triangular blocks (19) are fixedly connected to a limiting plate (20), and the adjacent sides of the plurality of limiting plates (20) are fixedly connected to a force-bearing bead (21).

3. A bearing for grinding a workpiece according to claim 2, characterized in that: The reset assembly comprises a fixed cylinder (15), the inner wall of the fixed cylinder (15) being slidably connected to two circular plates (16), and adjacent sides of every two fixed cylinders (15) being fixedly connected to a spring (17).

4. A bearing for grinding a workpiece according to claim 3, characterized in that: The outside of each two right-angle blocks (18) is slidably connected to the inner wall of one of the fixed cylinders (15), and the far sides of each two circular plates (16) are respectively fixedly connected to the near sides of each two right-angle blocks (18).

5. A bearing for grinding a workpiece according to claim 2, characterized in that: The exteriors of the plurality of limit plates (20) are respectively slidably connected to the inner walls around the outer ring shaft (1), and the exteriors of the plurality of force-bearing beads (21) are respectively slidably connected to the inner walls around the outer ring shaft (1).

6. A bearing for grinding a workpiece according to claim 1, characterized in that: The outer side of the outer sealing ring (8) is slidably connected to the inner side of the outer ring shaft (1), and the inner wall of the inner sealing ring (9) is slidably connected to the outer side of the inner ring shaft (10).

7. A bearing for grinding a workpiece according to claim 1, characterized in that: The outer parts of the plurality of bolts (6) are respectively threadedly connected to the inner walls around the top plate (5), and the outer parts of the bolts (6) are threadedly connected to the inner wall of the column (3).

8. A bearing for grinding a workpiece according to claim 2, characterized in that: The exteriors of the plurality of needle roller bearings (14) are movably connected to the inner side of the outer ring shaft (1), and the exteriors of the plurality of needle roller bearings (14) are in contact with the adjacent sides of the plurality of force-bearing beads (21).

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