Table type spinning edge-bending clamp for assembly before welding
By designing bench-type rotary bent clamps for pre-welding assembly, the precise positioning and fixing of parts is achieved using parts such as square shafts, rollers, compression covers and positioning blocks, the problem of difficult automatic control of bent edge processing in the existing technology is solved, and the bending edge quality and brazing quality are improved.
Patent Information
- Application Number
- CN202421276353.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The prior art is difficult to achieve automatic control during the bending edge processing, which easily damages the nickel layer on the surface of the part and affects the brazing quality.
A bench-type spinning bend clamp for pre-welding assembly is designed. The parts are precisely positioned and fixed through parts such as square shafts, rollers, compression covers and positioning blocks, and the bend processing is carried out in combination with manual spinning.
Accurate bending of parts is achieved, avoiding the problem of wavy end faces and dimensions when bending manually, reducing damage to the surface of parts and improving brazing quality.
Smart Images
Figure CN222587915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamps, in particular to a table-type spinning and bending clamp for pre-welding assembly. Background Art
[0002] A bending fixture is a device that clamps a component and then bends it to change its shape.
[0003] The sealing ring is formed by vacuum brazing a single-piece sealing ring and a copper ring seat. The welding of parts can also be regarded as a vacuum brazing process. In order to form a vacuum brazing area and ensure stable and accurate weld size, the end face of the steel sleeve needs to be bent and closed. If the steel sleeve is bent by manual knocking, on the one hand, the end face after bending will be wavy, and the size of the bending by manual eight-point knocking cannot meet the requirements of the drawing. On the other hand, the knocking force is not easy to control accurately and it is easy to damage the nickel layer on the surface of the part, seriously affecting the brazing quality. If mechanical bending is done by machining equipment, due to the small bending area and the presence of a nickel layer on the bending surface, automatic control cannot be achieved, which is easy to damage the parts, resulting in problems that affect the use effect of the parts. Utility Model Content
[0004] The utility model proposes a table-type spinning bending fixture for pre-welding assembly to solve the problem that mechanical bending of machine processing equipment is performed in a small bending area and a nickel layer exists on the bending surface, which makes it impossible to realize automatic control and easily damages parts, thereby affecting the use effect of the parts.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a table-type spinning and bending fixture for pre-welding assembly, including a rear cover plate, a first screw, a second screw, a bearing and parts, the rear cover plate is detachably connected to a support seat by means of the first screw, the support seat is detachably connected to a base by means of the first screw, the rear cover plate is detachably connected to a front cover plate by means of the first screw, the front cover plate is detachably connected to the support seat by means of the first screw, a core shaft is provided in the center sleeve of the base, and an adjusting screw is threadedly inserted on the side of the rear cover plate away from the front cover plate A square shaft is rotatably connected to one side of the adjusting screw, a flat-head bolt is threadedly inserted into one side of the square shaft, a roller is provided on the square shaft with the help of the flat-head bolt, a clamping cover is sleeved on the surface of the core shaft, a pressure plate is fixedly connected to the side of the clamping cover close to the roller with the help of a second screw, a nut is threadedly inserted into the side of the core shaft close to the clamping cover, one side of the nut is in contact with the clamping cover, a bayonet is pressed into the inside of the core shaft through interference fit, a positioning block is provided on the core shaft between the base and the clamping cover, and a handle is welded on the side of the core shaft away from the clamping cover.
[0006] The effects achieved by the above components are: when installing the fixture, install the square shaft into the support seat, and do not disassemble it after installing the roller through the flat head bolt, and then use the first screw to install and connect the support seat with the base, front and rear cover plates, and install the core shaft and bearing into the base. After the fixture is assembled, place it on the workbench and fix it. When assembling the parts to be bent, first unscrew the adjusting screw, adjust the square shaft and roller to the vicinity of the part processing position, and install the parts on the positioning block. The outer diameter and end face of the positioning block are installed with the end face of the inner hole of the part to achieve the centering and abutting requirements. After the parts are placed, install the clamping cover on the top of the part. The boss on the clamping cover corresponds to the cooling groove of the part to achieve precise fixing requirements. The pressure plate presses the part from the back and tightens the nut. After the parts are fixed, adjust the roller by adjusting the screw to align it with the bending end position, and shake the handle to manually spin and bend evenly.
[0007] Preferably, the inner ring of the bearing is fixedly connected to the core shaft, and the outer ring of the bearing is fixedly connected to the base.
[0008] The effect achieved by the above components is that when the handle rotates the core shaft, the bearing can be used to reduce the friction between the core shaft and the base bracket, so that the core shaft can be rotated more easily inside the base.
[0009] Preferably, the part is located in a central area where the pressing cover and the positioning block are close to each other, and the size of the part is adapted to the central area where the pressing cover and the positioning block are close to each other.
[0010] The effect achieved by the above components is that when the parts are clamped and bent, the parts are well clamped and fixed through the appropriate space formed between the clamping cover and the positioning block.
[0011] Preferably, three grooves are evenly distributed on the end surface of the clamping cover, and three thickness positioning pieces are embedded inside the grooves on the surface of the clamping cover, and the positioning pieces cooperate with the cooling grooves of the parts.
[0012] The effect achieved by the above components is: through the positioning piece in the groove cut on the end face of the clamping cover, it cooperates with the cooling groove of the part, and then quickly locates the position of the part, which is convenient for subsequent clamping and fixing of the part.
[0013] Preferably, the positioning block matches the inner hole of the part, two flat pins are provided on one side of the positioning block to limit the part, a rectangular groove is processed at the center hole of the positioning block, and the rectangular groove at the center hole of the positioning block matches the pin on the core shaft.
[0014] The effect achieved by the above components is: by machining a rectangular groove at the center hole of the positioning block, the bayonet pin can be inserted into the rectangular groove on the surface of the positioning block to perform angular control.
[0015] Preferably, a protective cover may be provided on the surface of the handle.
[0016] The effect achieved by the above components is: by arranging a protective cover on the handle, the friction between the handle and the staff's hand can be increased, so that the staff can hold the handle more firmly for use, and the staff's hand is protected so that the corners of the handle will not cause damage to the staff.
[0017] In summary, the beneficial effects of the utility model are:
[0018] Install the square shaft into the support seat. Do not disassemble it after installing the roller. Install and connect the support seat with the base, front and rear cover plates. Install the mandrel and bearing into the base. After the fixture is assembled, place it on the workbench and fix it. After the parts are placed, install the clamping cover. Insert the positioning sheet and the part cooling groove accordingly. Press the pressure plate in the opposite direction, tighten the nut, adjust the roller position by adjusting the screw, and turn the handle to perform the closing and bending operation.
[0019] Clamp the parts to be bent and closed in the fixture, and fix the fixture on the workbench first. When assembling the parts to be bent, first unscrew the adjusting screw, adjust the square shaft and roller to the vicinity of the part processing position, and install the parts on the positioning block. The outer diameter and end face of the positioning block are installed with the end face of the inner hole of the part to achieve the centering and abutting requirements. After the parts are placed, install the clamping cover on the top of the part. The boss on the clamping cover corresponds to the cooling groove of the part to achieve precise fixing requirements. The pressure plate presses the part from the back and tightens the nut. After the parts are fixed, adjust the roller by adjusting the screw to align it with the bending and closing position, and shake the handle to manually spin and bend evenly. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the compression cover of the utility model;
[0022] Figure 3 For this utility model Figure 2 sectional view of;
[0023] Figure 4 This is a schematic diagram of the positioning block of the utility model;
[0024] Figure 5 For this utility model Figure 4 Cross-sectional view of .
[0025] Legend: 1. Rear cover; 2. Support seat; 3. Base; 4. First screw; 5. Adjusting screw; 6. Square shaft; 7. Front cover; 8. Flat head bolt; 9. Roller; 10. Pressure plate; 11. Second screw; 12. Pressure cover; 13. Nut; 14. Mandrel; 15. Pin; 16. Positioning block; 17. Handle; 18. Parts; 19. Bearing. DETAILED DESCRIPTION
[0026] Reference Figure 1 As shown, this embodiment discloses a bench-type spinning and bending fixture for pre-welding assembly, including a rear cover plate 1, a first screw 4, a second screw 11, a bearing 19 and a part 18. The rear cover plate 1 is detachably connected to a support seat 2 by means of the first screw 4, and the support seat 2 is detachably connected to a base 3 by means of the first screw 4. The rear cover plate 1 is detachably connected to a front cover plate 7 by means of the first screw 4, and the front cover plate 7 is detachably connected to the support seat 2 by means of the first screw 4. A core shaft 14 is sleeved at the center of the base 3, and an adjusting screw 5 is threadedly inserted on one side of the rear cover plate 1 away from the front cover plate 7, and one side of the adjusting screw 5 is rotatably connected to the rear cover plate 1. A square shaft 6 is connected, a flat-head bolt 8 is threadedly inserted on one side of the square shaft 6, a roller 9 is provided on the square shaft 6 by means of the flat-head bolt 8, a clamping cover 12 is sleeved on the surface of the core shaft 14, a side of the clamping cover 12 close to the roller 9 is fixedly connected with a pressure plate 10 by means of a second screw 11, a nut 13 is threadedly inserted on the side of the core shaft 14 close to the clamping cover 12, one side of the nut 13 abuts against the clamping cover 12, a bayonet 15 is pressed into the interior of the core shaft 14 by interference fit, a positioning block 16 is provided on the core shaft 14 between the base 3 and the clamping cover 12, and a handle 17 is welded on the side of the core shaft 14 away from the clamping cover 12.
[0027] Reference Figure 1 As shown, this embodiment discloses that when the fixture is installed, the square shaft 6 is installed into the support seat 2, and the roller 9 is installed by the flat head bolt 8 without disassembly. Then, the support seat 2 is installed and connected with the base 3 and the front and rear cover plates 1 by the first screw 4. The mandrel 14 and the bearing 19 are installed into the base 3. After the fixture is assembled, it is placed on the workbench and fixed and adjusted. When assembling the part 18 to be bent, the adjusting screw 5 is first unscrewed, the square shaft 6 and the roller 9 are adjusted to the vicinity of the processing position of the part 18, and the part 18 is installed in the positioning On block 16, the outer diameter and end face of the positioning block 16 are installed with the end face of the inner hole of part 18 to achieve the centering and abutting requirements. After part 18 is placed, the clamping cover 12 is installed into the top of part 18. The boss on the clamping cover 12 corresponds to the cooling groove of part 18 to achieve precise fixing requirements. The pressing plate 10 presses part 18 from the back side and tightens the nut 13. After part 18 is fixed, adjust the roller 9 by adjusting the screw 5 to align it with the bending edge closing position, and shake the handle 17 to manually and evenly spin the bending edge.
[0028] Reference Figure 1As shown, this embodiment discloses that the inner ring of the bearing 19 is fixedly connected to the core shaft 14, and the outer ring of the bearing 19 is fixedly connected to the base 3. When the handle 17 rotates the core shaft 14, the bearing 19 can reduce the friction between the core shaft 14 and the base 3 bracket, so that the core shaft 14 can be more easily rotated inside the base 3.
[0029] Reference Figure 1-5 As shown, this embodiment discloses that the part 18 is located in the central area where the pressing cover 12 and the positioning block 16 are close to each other, and the size of the part 18 is adapted to the central area where the pressing cover 12 and the positioning block 16 are close to each other. When the part 18 is clamped and bent, the part 18 is well clamped and fixed by the appropriate space formed between the pressing cover 12 and the positioning block 16.
[0030] Reference Figure 1-5 As shown, this embodiment discloses that three grooves are evenly distributed on the end surface of the pressing cover 12, and three thickness positioning pieces are embedded inside the grooves on the surface of the pressing cover 12, and the positioning pieces match the cooling grooves of the part 18. The positioning pieces in the grooves on the end surface of the pressing cover 12 are matched with the cooling grooves of the part 18, and then the position of the part 18 is quickly located, which is convenient for the subsequent clamping and fixing of the part 18.
[0031] Reference Figure 1-5 As shown, this embodiment discloses that the positioning block 16 matches the inner hole of the part 18, two flat pins are provided on one side of the positioning block 16 to limit the part 18, a rectangular groove is processed at the center hole of the positioning block 16, and the rectangular groove at the center hole of the positioning block 16 matches the bayonet 15 on the mandrel 14. By processing a rectangular groove at the center hole of the positioning block 16, the bayonet 15 can be inserted into the rectangular groove on the surface of the positioning block 16 to perform angular control.
[0032] Reference Figure 1 As shown, this embodiment discloses that a protective cover can be provided on the surface of the handle 17. By providing the protective cover on the handle 17, the friction between the handle 17 and the hand of the staff can be increased, so that the staff can hold the handle 17 more firmly for use, and the staff's hand is protected so that the corner of the handle 17 does not cause damage to the staff.
[0033] Working principle: When installing the fixture, install the square shaft 6 into the support seat 2, install the roller 9 through the flat head bolt 8 and do not disassemble it. Then use the first screw 4 to install and connect the support seat 2 with the base 3 and the front and rear cover plates 1. Install the mandrel 14 and the bearing 19 into the base 3. After the fixture is assembled, place it on the workbench and fix it. When assembling the part 18 to be bent, first unscrew the adjusting screw 5, adjust the square shaft 6 and the roller 9 to the vicinity of the processing position of the part 18, and install the part 18 into the positioning block 1. 6, the outer diameter and end face of the positioning block 16 are installed with the end face of the inner hole of the part 18 to achieve the centering and abutting requirements. After the part 18 is placed, the clamping cover 12 is installed on the top of the part 18. The boss on the clamping cover 12 corresponds to the cooling groove of the part 18 to achieve the precise fixing requirements. The pressing plate 10 presses the part 18 from the back side and tightens the nut 13. After the part 18 is fixed, adjust the roller 9 by adjusting the screw 5 to align it with the bending edge closing position, and shake the handle 17 to manually spin the bending edge evenly.
Claims
1. Bench type spinning and bending fixture for pre-welding assembly, characterized by: The invention comprises a rear cover plate (1), a first screw (4), a second screw (11), a bearing (19) and a part (18), wherein the rear cover plate (1) is detachably connected to a support seat (2) by means of the first screw (4), the support seat (2) is detachably connected to a base (3) by means of the first screw (4), the rear cover plate (1) is detachably connected to a front cover plate (7) by means of the first screw (4), the front cover plate (7) is detachably connected to the support seat (2) by means of the first screw (4), a core shaft (14) is sleeved at the center of the base (3), an adjusting screw (5) is threadedly inserted on one side of the rear cover plate (1) away from the front cover plate (7), one side of the adjusting screw (5) is rotatably connected to a square shaft (6), one side of the square shaft (6) is A flat-head bolt (8) is inserted into the side thread, and the square shaft (6) is provided with a roller (9) by means of the flat-head bolt (8). A clamping cover (12) is sleeved on the surface of the core shaft (14). The side of the clamping cover (12) close to the roller (9) is fixedly connected to a pressure plate (10) by means of a second screw (11). A nut (13) is inserted into the side of the core shaft (14) close to the clamping cover (12). One side of the nut (13) is in contact with the clamping cover (12). A bayonet (15) is pressed into the core shaft (14) by interference fit. A positioning block (16) is provided between the base (3) and the clamping cover (12). A handle (17) is welded to the side of the core shaft (14) away from the clamping cover (12).
2. The bench-top spinning and bending fixture for pre-welding assembly according to claim 1 is characterized in that: The inner ring of the bearing (19) is fixedly connected to the core shaft (14), and the outer ring of the bearing (19) is fixedly connected to the base (3).
3. The bench-top spinning and bending fixture for pre-welding assembly according to claim 1 is characterized in that: The part (18) is located in a central area where the pressing cover (12) and the positioning block (16) are close to each other, and the size of the part (18) is adapted to the central area where the pressing cover (12) and the positioning block (16) are close to each other.
4. The bench-top spinning and bending fixture for pre-welding assembly according to claim 1 is characterized in that: The end surface of the clamping cover (12) is evenly distributed with three grooves, and positioning pieces of three thicknesses are embedded inside the grooves on the surface of the clamping cover (12), and the positioning pieces cooperate with the cooling grooves of the parts (18).
5. The bench-top spinning and bending fixture for pre-welding assembly according to claim 1 is characterized in that: The positioning block (16) matches the inner hole of the part (18); two flat pins are provided on one side of the positioning block (16) to limit the part (18); a rectangular groove is processed at the center hole of the positioning block (16); the rectangular groove at the center hole of the positioning block (16) matches the bayonet pin (15) on the core shaft (14).
6. The bench-top spinning and bending fixture for pre-welding assembly according to claim 1, characterized in that: The surface of the handle (17) can be covered with a protective cover.