Inner and outer ring tight fitting hollow welding fixture
By designing a hollow welding fixture with tightly fitted inner and outer rings, and utilizing structures such as a fixing ring and a limiting block to achieve bidirectional clamping, the problem of uneven extrusion caused by unilateral clamping is solved, thereby improving welding stability and the applicability of the fixture.
Patent Information
- Application Number
- CN202521872829.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-01
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-01
AI Technical Summary
The existing hollow welding fixture with tight inner and outer rings has problems such as uneven extrusion caused by clamping on one side, narrow size adaptation range, and poor versatility.
A hollow welding fixture with inner and outer rings tightly fitted was designed. Through structures such as a fixing ring, guide rod, limiting block, spring, and inner conical ring block, it can achieve bidirectional clamping of the first and second hollow rings, improve clamping stability, and adapt to clamping requirements of various sizes.
It achieves a tight fit between the inner and outer rings, improves welding stability and fixture applicability, is suitable for welding hollow rings of various sizes, and improves processing accuracy and efficiency.
Smart Images
Figure CN224674151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixture technology, and in particular to a hollow welding fixture with inner and outer rings tightly fitted. Background Technology
[0002] In the field of mechanical manufacturing, the welding of hollow structures with tight inner and outer rings (such as bearing rings, pipe flanges, gear hubs, etc.) requires the use of fixtures to ensure a tight fit between the inner and outer rings, in order to guarantee welding strength and precision.
[0003] However, the existing hollow welding fixtures with tight fit between inner and outer rings still have certain defects. For example, most existing fixtures use single-sided clamping. If only the outer ring or the inner ring is clamped for fixation, it is difficult to achieve uniform compression of the inner and outer rings. This will result in a situation where the force-bearing side is tightly fitted while the other side has a gap. Secondly, in actual production, the specifications of the hollow structure with tight fit between inner and outer rings are diverse, but the size range of the fixtures used for fixing is narrow and the versatility is poor. Utility Model Content
[0004] The purpose of this utility model is to provide a hollow welding fixture for tight fitting of inner and outer rings, which can simultaneously apply clamping force to the inner and outer rings of the first hollow ring and the second hollow ring, thereby improving clamping stability. It can also clamp and fix a variety of first hollow rings and second hollow rings of different sizes within a certain range, thereby improving the applicability of the device.
[0005] To achieve the above objectives, a hollow welding fixture for tight-fitting inner and outer rings is provided, comprising: A fixed ring is provided, with a guide rod fixedly connected to its upper surface. A first limiting block is fixedly connected to the upper end of the guide rod. A spring is provided on the outer surface of the guide rod. An inner conical ring block is slidably connected to the outer surface of the guide rod. A fixed disk is provided inside the fixed ring. A truncated cone is provided on the upper surface of the fixed disk. An internal hexagonal bolt is slidably connected to the inner surface of the truncated cone. An internal hexagonal bolt is slidably connected to the outer surface of the truncated cone. A connecting post is fixedly connected to the outer surface of the internal hexagonal bolt. A second limiting block is fixedly connected to the end of the connecting post away from the internal hexagonal bolt. A support block is slidably connected to the outer surface of the second limiting block. A convex groove is provided on the outer surface of the support block. A convex block is slidably connected to the inner surface of the convex groove. A connecting ring is fixedly connected to the upper surface of the convex block. A first hollow ring is provided on the outer surface of the internal hexagonal bolt. A second hollow ring is provided on the inner surface of the support block.
[0006] According to the aforementioned inner and outer ring tight-fitting hollow welding fixture, the inner conical ring block is provided with a first limiting cavity, and the inner surface of the first limiting cavity is adapted to the first limiting block.
[0007] According to the aforementioned hollow welding fixture with inner and outer rings tightly fitted, the support block has a second limiting cavity inside, and the inner surface of the second limiting cavity is adapted to the second limiting block.
[0008] According to the aforementioned hollow welding fixture with inner and outer rings tightly fitted, the upper end of the spring is fixedly connected to the inner conical ring block, and the lower end of the spring is fixedly connected to the fixing ring.
[0009] According to the aforementioned hollow welding fixture with inner and outer rings tightly fitted, the inner surface of the inner conical ring block is in contact with the support block.
[0010] According to the aforementioned hollow welding fixture with inner and outer rings tightly fitted, the outer surface of the internal hexagonal bolt is threadedly connected to the fixed disc.
[0011] According to the aforementioned hollow welding fixture with inner and outer rings tightly fitted, the number of internal hexagonal bolts is four and they are distributed in a ring array.
[0012] According to the aforementioned hollow welding fixture for tight fitting of inner and outer rings, the outer surface of the first hollow ring is in contact with the second hollow ring.
[0013] The above-mentioned solution has the following beneficial effects: By incorporating a fixed ring, guide rod, first limiting block, spring, inner conical ring block, fixed plate, truncated cone, internal hexagonal bolt, connecting column, second limiting block, support block, convex groove, convex block, connecting ring, first hollow ring, and second hollow ring, clamping forces can be applied simultaneously to the inner and outer rings of the first and second hollow rings, thereby improving clamping stability. Furthermore, the device can clamp and fix various sizes of first and second hollow rings within a certain range, thus enhancing its applicability.
[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of the hollow welding fixture with inner and outer rings tightly fitted according to this utility model; Figure 2 This is a front sectional view of the overall structure of the hollow welding fixture with inner and outer rings tightly fitted according to this utility model; Figure 3 This is a side sectional view of the overall structure of the hollow welding fixture with inner and outer rings tightly fitted according to this utility model; Figure 4 The above is a schematic diagram of the overall structure of the hollow welding fixture with inner and outer rings tightly fitted according to this utility model.
[0016] Legend: The components are: 1. Fixing ring; 2. Guide rod; 3. First limiting block; 4. Spring; 5. Inner conical ring block; 6. Fixing disc; 7. Frustum; 8. Socket headstock bolt; 9. Connecting column; 10. Second limiting block; 11. Support block; 12. Convex groove; 13. Convex block; 14. Connecting ring; 15. First hollow ring; 16. Second hollow ring; 17. First limiting cavity; 18. Second limiting cavity. Detailed Implementation
[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0018] Reference Figure 1-4 This utility model embodiment of a hollow welding fixture with inner and outer rings tightly fitted includes: a fixing ring 1, a guide rod 2 fixedly connected to the upper surface of the fixing ring 1, a first limiting block 3 fixedly connected to the upper end of the guide rod 2, a spring 4 provided on the outer surface of the guide rod 2, an inner conical ring block 5 slidably connected to the outer surface of the guide rod 2, a fixing disk 6 provided inside the fixing ring 1, a truncated cone 7 provided on the upper surface of the fixing disk 6, an internal hexagonal bolt 8 slidably connected to the inner surface of the truncated cone 7, an internal hexagonal bolt 8 slidably connected to the outer surface of the truncated cone 7, a connecting post 9 fixedly connected to the outer surface of the internal hexagonal bolt 8, a second limiting block 10 fixedly connected to the end of the connecting post 9 away from the internal hexagonal bolt 8, a support block 11 slidably connected to the outer surface of the second limiting block 10, a convex groove 12 provided on the outer surface of the support block 11, a convex block 13 slidably connected to the inner surface of the convex groove 12, and an upper part of the convex block 13... A connecting ring 14 is fixedly connected to the surface. A first hollow ring 15 is provided on the outer surface of the internal hexagonal bolt 8. A second hollow ring 16 is provided on the inner surface of the support block 11. A first limiting cavity 17 is provided inside the inner conical ring block 5. The inner surface of the first limiting cavity 17 is adapted to the first limiting block 3 and is used to limit the movement of the first limiting block 3. A second limiting cavity 18 is provided inside the support block 11. The inner surface of the second limiting cavity 18 is adapted to the second limiting block 10 and is used to limit the movement of the second limiting block 10. The upper end of the spring 4 is fixedly connected to the inner conical ring block 5, and the lower end of the spring 4 is fixedly connected to the fixing ring 1. The inner surface of the inner conical ring block 5 is in contact with the support block 11. The outer surface of the internal hexagonal bolt 8 is threadedly connected to the fixing disc 6. There are four internal hexagonal bolts 8 arranged in a ring array. The outer surface of the first hollow ring 15 is in contact with the second hollow ring 16.
[0019] Working principle: During operation, the connecting ring 14 is fixed, then the fixing ring 1 and the fixing plate 6 are connected to the hydraulic equipment. Subsequently, the first hollow ring 15 and the second hollow ring 16 to be welded are spliced together and fitted onto the cylindrical block formed by four internal hexagon bolts 8, as shown. Figure 2 , Figure 3 As shown, the upper hydraulic unit is then activated, causing the fixed ring 1 and fixed plate 6 to move upward. At this time, the fixed ring 1 will drive the inner conical ring block 5 to move upward. Under the conical sliding action of the inner conical ring block 5 and the support block 11, multiple support blocks 11 will be driven to contract inward under the limiting sliding action of the convex groove 12 and the convex block 13, thereby squeezing the outer ring of the second hollow ring 16. During the upward movement of the fixed plate 6, the truncated cone 7 will move upward synchronously. At this time, under the action of the outer conical surface of the truncated cone 7, the four inner hexagons of the spring will be driven. Under the limiting action of the connecting column 9, the second limiting block 10, and the second limiting cavity 18, the angle bolt 8 moves outward, thereby squeezing the inner ring of the first hollow ring 15. At this time, under the bidirectional squeezing action, the first hollow ring 15 and the second hollow ring 16 will be tightly connected, thereby making the connection tighter and improving the stability of subsequent laser welding processing. Moreover, various sizes of the first hollow ring 15 and the second hollow ring 16 can be welded within the contraction range of the support block 11 and the internal hex bolt 8, thereby improving the applicability of the equipment.
[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A hollow welding fixture with inner and outer rings tightly fitted, characterized in that, include: A fixed ring (1) is provided with a guide rod (2) fixedly connected to its upper surface. A first limiting block (3) is fixedly connected to the upper end of the guide rod (2). A spring (4) is provided on the outer surface of the guide rod (2). An inner conical ring block (5) is slidably connected to the outer surface of the guide rod (2). A fixed disk (6) is provided inside the fixed ring (1). A truncated cone (7) is provided on the upper surface of the fixed disk (6). An internal hexagonal bolt (8) is slidably connected to the inner surface of the truncated cone (7). An internal hexagonal bolt (8) is slidably connected to the outer surface of the truncated cone (7). The internal hexagonal bolt (8) has... A connecting post (9) is fixedly connected to the outer surface. A second limiting block (10) is fixedly connected to the end of the connecting post (9) away from the internal hexagon bolt (8). A support block (11) is slidably connected to the outer surface of the second limiting block (10). A convex groove (12) is provided on the outer surface of the support block (11). A convex block (13) is slidably connected to the inner surface of the convex groove (12). A connecting ring (14) is fixedly connected to the upper surface of the convex block (13). A first hollow ring (15) is provided on the outer surface of the internal hexagon bolt (8). A second hollow ring (16) is provided on the inner surface of the support block (11).
2. The hollow welding fixture with inner and outer rings tightly fitted according to claim 1, characterized in that, The inner conical ring block (5) is provided with a first limiting cavity (17), and the inner surface of the first limiting cavity (17) is adapted to the first limiting block (3).
3. The hollow welding fixture for tight fitting of inner and outer rings according to claim 1, characterized in that, The support block (11) has a second limiting cavity (18) inside, and the inner surface of the second limiting cavity (18) is adapted to the second limiting block (10).
4. The hollow welding fixture with inner and outer rings tightly fitted according to claim 1, characterized in that, The upper end of the spring (4) is fixedly connected to the inner conical ring block (5), and the lower end of the spring (4) is fixedly connected to the fixing ring (1).
5. The hollow welding fixture for tight fitting of inner and outer rings according to claim 1, characterized in that, The inner surface of the inner conical ring block (5) is in contact with the support block (11).
6. The hollow welding fixture for tight fitting of inner and outer rings according to claim 1, characterized in that, The outer surface of the internal hex bolt (8) is threaded to the fixed plate (6).
7. The hollow welding fixture for tight fitting of inner and outer rings according to claim 1, characterized in that, The number of the internal hex bolts (8) is four, and they are arranged in a ring array.
8. The hollow welding fixture for tight fitting of inner and outer rings according to claim 1, characterized in that, The outer surface of the first hollow ring (15) is in contact with the second hollow ring (16).