Centering device of tapered roller bearing superfinishing machine tool

Abstract

The utility model relates to a tapered roller bearing superfinishing machine tool, in particular to a tapered roller bearing superfinishing machine tool centering device which comprises a base, the output end of an oil cylinder is fixedly connected with a connecting shaft rod, the circumferential face of the connecting shaft rod is fixedly connected with a barrel body, a fixing ring and a sealing plate, and a cavity is formed in the barrel body. A sliding groove is formed in the top of the can body, a sliding ring is slidably connected into the sliding groove, a first arc face is arranged on the circumferential face of the fixing ring, a second arc face is arranged on the circumferential face of the can body, mounting grooves are formed in the two ends of the limiting block, sliding blocks are fixedly connected to the ends of the springs, and clamping blocks are clamped into the second clamping grooves. The end of the clamping block is fixedly connected with a tightening spring, and the outer portion of the fixing ring is sleeved with a bearing. By arranging the mounting groove, the first clamping groove, the second clamping groove, the clamping block and the tightening spring, the tightening spring can be replaced conveniently.

Description

Technical Field

[0001] This utility model relates to an ultra-precision machine tool for tapered roller bearings, and more particularly to a centering device for the ultra-precision machine tool for tapered roller bearings. Background Technology

[0002] One important application of ultra-precision machines is the ultra-precision machining of bearing inner rings. The common method is to fit the bearing inner ring onto a centering shaft support device and then clamp it on a machine tool for machining. During the machining process, it is important to avoid scratches on the bearing inner ring.

[0003] Existing centering devices for tapered roller bearings in ultra-precision machine tools use limit blocks to position the bearings during use. However, the performance of the auxiliary compression springs deteriorates over time and they need to be replaced periodically. Since the compression springs are usually connected in series with multiple limit blocks, they need to be replaced as a whole, which is cumbersome and increases costs. Summary of the Invention

[0004] The purpose of this invention is to provide a centering device for tapered roller bearings in ultra-precision machine tools, which facilitates the replacement of compression springs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A centering device for ultra-precision machine tools of tapered roller bearings is provided, comprising a base, a hydraulic cylinder fixedly connected to the top of the base, a connecting shaft fixedly connected to the output end of the hydraulic cylinder, a barrel, a fixing ring, and a sealing plate fixedly connected to the circumferential surface of the connecting shaft, a cavity formed inside the barrel, and the sealing plate slidably connected to the inner wall of the cavity, a sliding groove formed at the top of the barrel, a sliding ring slidably connected inside the sliding groove, and the sliding ring fixedly connected to the bottom of the fixing ring, a first arc surface formed on the circumferential surface of the fixing ring, a second arc surface formed on the circumferential surface of the barrel, and a limiting block slidably connected between the first and second arc surfaces, mounting grooves formed at both ends of the limiting block, a spring fixedly connected to the bottom of the mounting groove, a slider fixedly connected to the end of the spring, a first and second locking groove formed on the inner wall of the mounting groove, a locking block locking inside the second locking groove, a compression spring fixedly connected to the end of the locking block, and a bearing sleeved on the outside of the fixing ring.

[0006] Optionally, a fixing frame is fixedly connected to the circumferential surface of the base, and the number of fixing frames is two, which are symmetrically distributed from left to right.

[0007] Optionally, the inner sidewalls of both fixing frames are fixedly connected with a first fixing plate and a second fixing plate, and the first fixing plate is located above the second fixing plate.

[0008] Optionally, a support plate is fixedly connected to the end of the first fixing plate away from the fixing frame, and a support block is fixedly connected to the top of the support plate, with the bearing located at the top of the support block.

[0009] Optionally, the end of the second fixing plate away from the fixing frame is fixedly connected to the circumferential surface of the barrel, and the oil cylinder is located between the two second fixing plates.

[0010] Optionally, multiple sets of the limiting block, the locking block, and the compression spring are provided and arranged in a ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model is provided with an installation groove, a first slot, a second slot, a locking block, and a compression spring. When the compression spring needs to be replaced, the locking block is pushed into the installation groove, and the spring is compressed by the slider, thereby moving the end of the locking block out from the second slot. Then, the locking block is rotated so that it corresponds to the first slot, and the locking block can be removed from the installation groove for replacement. Replacement is convenient and does not require replacement with a limit block, saving costs.

[0013] This utility model is equipped with a spring and a slider. When the slider compresses the spring, the spring will generate a reaction force on the slider. When the locking block is located inside the second slot, the slider limits the locking block under the pushing action of the spring, so that the locking block can be tightly engaged with the inside of the second slot. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a first-view internal structure diagram of the present invention;

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the internal structure of the present invention from a second perspective;

[0019] Figure 5 This utility model Figure 4A magnified structural diagram at point B in the middle.

[0020] In the diagram: 1. Base; 2. Fixing frame; 3. First fixing plate; 4. Support plate; 5. Second fixing plate; 6. Barrel body; 7. Hydraulic cylinder; 8. Connecting shaft; 9. Sealing plate; 10. Cavity; 11. Fixing ring; 12. Support block; 13. Bearing; 14. Slide groove; 15. Slip ring; 16. First arc surface; 17. Second arc surface; 18. Limiting block; 19. Mounting groove; 20. First slot; 21. Second slot; 22. Spring; 23. Slider; 24. Locking block; 25. Compression spring. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Reference Figure 1-5 A centering device for ultra-precision machine tools of tapered roller bearings includes a base 1, a hydraulic cylinder 7 fixedly connected to the top of the base 1, a connecting shaft 8 fixedly connected to the output end of the hydraulic cylinder 7, a barrel 6, a fixing ring 11, and a sealing plate 9 fixedly connected to the circumferential surface of the connecting shaft 8, a cavity 10 formed inside the barrel 6, and the sealing plate 9 slidably connected to the inner wall of the cavity 10, a sliding groove 14 formed at the top of the barrel 6, a sliding ring 15 slidably connected inside the sliding groove 14, and the sliding ring 15 fixedly connected to the bottom of the fixing ring 11, and a first... A first arc surface 16 and a second arc surface 17 are formed on the circumference of the barrel body 6. A limit block 18 is slidably connected between the first arc surface 16 and the second arc surface 17. Both ends of the limit block 18 are provided with mounting grooves 19. A spring 22 is fixedly connected to the bottom of the inner side of the mounting groove 19. A slider 23 is fixedly connected to the end of the spring 22. A first slot 20 and a second slot 21 are formed on the inner side wall of the mounting groove 19. A locking block 24 is locked inside the second slot 21. A compression spring 25 is fixedly connected to the end of the locking block 24. A bearing 13 is sleeved on the outside of the fixing ring 11. When the compression spring 25 needs to be replaced, the locking block 24 is pushed into the mounting groove 19. The spring 22 is compressed by the slider 23, thereby moving the end of the locking block 24 out of the second slot 21. Then, the locking block 24 is rotated so that it corresponds to the first slot 20, and the locking block 24 can be removed from the mounting groove 19 for replacement. Replacement is convenient.

[0023] Two fixing frames 2 are fixedly connected to the circumferential surface of the base 1, and they are symmetrically distributed from left to right. By setting two fixing frames 2, the stability of the base 1 can be enhanced.

[0024] The inner walls of both fixing brackets 2 are fixedly connected to a first fixing plate 3 and a second fixing plate 5, with the first fixing plate 3 located above the second fixing plate 5. The barrel body 6 and the support plate 4 are installed using the first fixing plate 3 and the second fixing plate 5.

[0025] The first fixed plate 3 is fixedly connected to a support plate 4 at the end away from the fixed frame 2. A support block 12 is fixedly connected to the top of the support plate 4, and the bearing 13 is located on the top of the support block 12.

[0026] The end of the second fixing plate 5 away from the fixing frame 2 is fixedly connected to the circumferential surface of the barrel 6, and the oil cylinder 7 is located between the two second fixing plates 5.

[0027] Multiple sets of limiting blocks 18, locking blocks 24, and compression springs 25 are provided and arranged in a ring. The multiple sets of limiting blocks 18, locking blocks 24, and compression springs 25 are connected in a ring and located inside the bearing 13.

[0028] When this utility model is used, the hydraulic cylinder 7 is started, and the connecting shaft 8 drives the fixed ring 11 to move down, while the sliding ring 15 slides inside the sliding groove 14, so that the fixed ring 11 can squeeze the limiting block 18. The limiting block 18 is guided by the first arc surface 16 and the second arc surface 17, so that the annularly distributed compression spring 25 expands, so that it can contact the inner wall of the bearing 13 through the limiting block 18, thereby positioning the bearing 13.

[0029] Working principle: When the compression spring 25 needs to be replaced, push the locking block 24 into the mounting slot 19. The slider 23 compresses the spring 22, thereby moving the end of the locking block 24 out of the second slot 21. Then rotate the locking block 24 so that it corresponds to the first slot 20, and the locking block 24 can be removed from the mounting slot 19 for replacement. Replacement is convenient. When the slider 23 compresses the spring 22, the spring 22 will generate a reaction force on the slider 23. When the locking block 24 is located inside the second slot 21, the slider 23 limits the locking block 24 under the pushing action of the spring 22, so that the locking block 24 is tightly engaged with the inside of the second slot 21.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centering device for ultra-precision machine tools with tapered roller bearings, comprising a base (1), characterized in that: A hydraulic cylinder (7) is fixedly connected to the top of the base (1). A connecting shaft (8) is fixedly connected to the output end of the hydraulic cylinder (7). A barrel body (6), a fixing ring (11), and a sealing plate (9) are fixedly connected to the circumferential surface of the connecting shaft (8). A cavity (10) is opened inside the barrel body (6), and the sealing plate (9) is slidably connected to the inner wall of the cavity (10). A sliding groove (14) is opened at the top of the barrel body (6). A sliding ring (15) is slidably connected inside the sliding groove (14), and the sliding ring (15) is fixedly connected to the bottom of the fixing ring (11). A first arc surface (16) is opened on the circumferential surface of the fixing ring (11). The barrel body (6) The circumferential surface is provided with a second arc surface (17), and a limit block (18) is slidably connected between the first arc surface (16) and the second arc surface (17). Both ends of the limit block (18) are provided with mounting grooves (19). A spring (22) is fixedly connected to the bottom of the mounting groove (19). A slider (23) is fixedly connected to the end of the spring (22). The inner sidewall of the mounting groove (19) is provided with a first slot (20) and a second slot (21). A locking block (24) is locked inside the second slot (21). A compression spring (25) is fixedly connected to the end of the locking block (24). A bearing (13) is sleeved on the outside of the fixing ring (11).

2. The centering device for tapered roller bearings in an ultra-precision machine tool as described in claim 1, characterized in that: The base (1) is fixedly connected to a fixing frame (2) on its circumference. There are two fixing frames (2), which are symmetrically distributed on the left and right.

3. The centering device for tapered roller bearings in an ultra-precision machine tool as described in claim 2, characterized in that: The inner walls of the two fixing frames (2) are fixedly connected with a first fixing plate (3) and a second fixing plate (5), and the first fixing plate (3) is located above the second fixing plate (5).

4. The centering device for tapered roller bearings in an ultra-precision machine tool as described in claim 3, characterized in that: The first fixing plate (3) is fixedly connected to a support plate (4) at one end away from the fixing frame (2). A support block (12) is fixedly connected to the top of the support plate (4), and the bearing (13) is located on the top of the support block (12).

5. The centering device for tapered roller bearings in an ultra-precision machine tool as described in claim 4, characterized in that: The end of the second fixing plate (5) away from the fixing frame (2) is fixedly connected to the circumferential surface of the barrel body (6), and the oil cylinder (7) is located between the two second fixing plates (5).

6. The centering device for tapered roller bearings in an ultra-precision machine tool as described in claim 5, characterized in that: The limiting block (18), the locking block (24), and the compression spring (25) are all provided in multiple sets and are distributed in a ring shape.

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