Turnover positioning clamp capable of limiting rotation angle
By designing a flipping positioning fixture, the rotation angle of the workpiece is limited and fixed by the cooperation of the spindle, the limiting groove and the limiting block. This solves the problem of difficult workpiece flipping, improves processing accuracy and efficiency, adapts to different types and sizes of workpieces, and meets the needs of mass production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-27
- Publication Date
- 2026-04-03
AI Technical Summary
Existing fixtures cannot flip the workpiece when machining workpieces with two planes to be machined, resulting in one plane being unmachined. This leads to complex operation, low efficiency, poor accuracy and stability, and makes it difficult to meet the needs of mass production.
A flip-positioning fixture capable of limiting the rotation angle was designed. Through the cooperation of the spindle with the limiting groove and the limiting block, the clamped part can be rotated at a specific angle. The positioning components such as the combination of the stop, the pressure plate and the slider are used to fix it, so as to realize the processing of different processing surfaces.
It improves the positioning accuracy and stability of the machining process, simplifies the operation, meets the needs of mass production, and improves machining efficiency and quality.
Smart Images
Figure CN224073888U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of tools or benchtop equipment for fastening, connecting, disassembling or clamping, and particularly relates to a flip positioning clamp that can limit the rotation angle. Background Technology
[0002] Fixtures are common workpiece clamping and positioning tooling equipment. Conventional fixtures clamp the workpiece from both ends using clamping components and then place it on a machining table for operations such as welding, drilling, and grinding. However, when a workpiece has two surfaces to be machined, the workpiece cannot be flipped, resulting in one surface being unmachined. If the unmachined surface is to be machined, the workpiece must first be removed from the fixture and then re-clamped. This process is complex, inefficient, and requires re-measurement of the horizontal position after clamping. The accuracy and stability are poor, and it is difficult to meet the needs of mass production. Utility Model Content
[0003] In order to solve the above problems, this utility model provides a flipping positioning fixture that can limit the rotation angle.
[0004] The purpose of this invention is to provide a flip positioning fixture that can limit the rotation angle. The positioning component stably fixes the clamped part on the spindle and makes the clamped part rotate with the spindle. The cooperation between the limiting groove and the limiting block allows the clamped part to rotate at a specific angle. When the limiting block rotates to different positions, different machining surfaces are arranged upwards, thereby completing the machining operation of the machining surface. This invention can ensure the positioning accuracy and stability during machining, is easy to operate and has accurate positioning, meets the needs of mass production, and improves machining efficiency and machining quality.
[0005] To achieve the purpose of this utility model, the technical solution of this utility model is as follows:
[0006] A flip-positioning fixture capable of limiting rotation angle includes a first bracket, a rotatable spindle mounted on the first bracket, a clamping surface mounted on the spindle, and a positioning component mounted on the clamping surface. The positioning component fixes the clamped part to the clamping surface of the spindle. The first bracket is provided with a limiting groove, and the spindle is provided with a limiting block. Alternatively, the spindle is provided with a movable mating component, and the movable mating component is provided with a limiting block. The limiting block is arranged in the limiting groove. When the spindle rotates, the limiting block moves within the limiting groove. The movement trajectory of the limiting block and the corresponding center angle of movement are both limited by the limiting groove, thereby allowing the spindle to rotate only at a specific angle. The positioning component fixes the clamped part to the clamping surface of the spindle. By rotating the spindle, the clamping surface reaches different positions, thereby allowing different faces of the clamped part to face upwards, thus enabling the processing of different machining surfaces of the clamped part.
[0007] Furthermore, the positioning component includes any one or more combinations of a stop block, a pressure plate, and a slider. This utility model can use the stop block to limit or position the clamped part, use the pressure plate to press the clamped part onto the clamping surface, use the movable slider to clamp the clamped part, or use the above combinations to achieve positioning, pressing, and clamping of the clamped part, thereby fixing the clamped part and preventing it from detaching from the clamping surface.
[0008] Furthermore, a slide groove is provided on the main shaft, and a slider is slidably disposed in the slide groove. A spring is provided in the slide groove, and one end of the slider abuts against one end of the spring. A pressure block is provided on the main shaft, pressing on the slider so that the slider moves along the slide groove. This utility model uses the spring to push the slider out, and the slide groove restricts the slider to move only along the slide groove. The pressure block is arranged above the slider so that the slider can be stably disposed in the slide groove when the main shaft rotates, preventing the slider from falling out of the slide groove.
[0009] Furthermore, the main shaft is provided with a mating screw hole, which connects to the slide groove. A pressure rod is screwed onto the mating screw hole. The other end of the slider abuts against the end of the pressure rod. The pressure rod is arranged in the mating screw hole and holds the other end of the slider in place, thus engaging with the spring to fix the position of the slider. When the position of the slider needs to be adjusted, the pressure rod is moved, allowing the slider to move within the slide groove.
[0010] Furthermore, one end of the screw hole is a through hole without threads, and the other end is a screw hole with threads. The through hole without threads on the screw hole communicates with the slide groove. The pressure rod includes a mating rod, one end of which is a smooth rod without threads, and the other end is a threaded rod with threads. A protective sleeve is provided on the threaded rod, and a gripping part is provided on the protective sleeve. In this invention, the smooth rod contacts the slider, and the pressure rod is fixed by the mating of the threaded rod with the threaded screw hole. The protective sleeve installed on the threaded rod prevents burns when using the pressure rod, and the gripping part on the protective sleeve allows the user to grip it more easily, ensuring that the slender pressure rod can rotate stably.
[0011] Furthermore, the slider includes an edge plate and a convex plate located at the upper end of the edge plate. A pressure block is arranged above the edge plate, and there is a gap between the pressure block and the edge plate. The convex plate and the edge plate form a stepped structure. The pressure block restricts the edge plate, so that the slider can move stably in the groove and the slider cannot detach from the groove.
[0012] Furthermore, the flipping positioning fixture of this utility model also includes a second bracket. The first bracket and the second bracket are arranged at intervals. The second bracket is provided with a mating hole. The end of the spindle away from the first bracket is provided with a rotating mating head that mates with the mating hole. The rotating mating head is arranged in the mating hole of the second bracket. The second bracket and the first bracket work together so that one end of the spindle is arranged on the first bracket and the other end of the spindle is arranged on the second bracket, making the rotation of the spindle more stable.
[0013] Furthermore, the mating hole is frustum-shaped, and the diameter of the end of the mating hole closer to the first support is larger than the diameter of the end of the mating hole farther from the first support, so that the rotating mating head can be smoothly inserted into the mating hole.
[0014] Furthermore, a bushing is provided on the first support, and one end of the spindle passes through the bushing to reduce the wear of the first support and ensure the stable rotation of the spindle.
[0015] Furthermore, a heat-insulating sleeve is provided on the movable mating parts. The heat-insulating sleeve of this utility model covers or partially covers the movable mating parts, which can prevent the user from being burned when the main shaft is rotated using the movable mating parts.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. This utility model uses a first bracket to cooperate with a spindle. The spindle rotates on the first bracket. A limiting groove on the first bracket cooperates with a limiting block on the spindle or a movable mating part, so that the limiting block is restricted by the limiting groove. When the spindle rotates forward, the limiting block reaches one end of the limiting groove. When the spindle rotates backward, the limiting block reaches the other end of the limiting groove, so that the spindle can only rotate within a specific angle range. The clamped part is fixed on the clamping surface of the spindle by a stop, pressure plate, and slider. The rotation of the spindle changes the direction of the clamping surface, which in turn changes the direction of the same end face of the clamped part. The clamped part is in a more convenient and easier position to be processed, which facilitates processing of the clamped part by other equipment, such as welding equipment. The structural design of this utility model ensures positioning accuracy and stability during the flipping process. It is easy to operate and accurate in positioning, meets the needs of mass production, and improves processing efficiency and processing quality.
[0018] 2. The positioning component of this utility model can use a slider to clamp the clamped part. The slider can also be used in conjunction with a stop block and a pressure plate to achieve stable fixation of the clamped part. For different types and sizes of clamped parts, a stop block, a pressure plate, a slider and their combination can be used, which has strong adaptability and versatility. This utility model restricts the two ends of the slider by spring and pressure rod. Adjusting the pressure rod can make the slider move in the slide groove. The pressure block presses down on the edge plate of the slider so that the slider cannot disengage from the slide groove when the spindle rotates. Attached Figure Description
[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0020] Figure 1 This is a front view of the present invention;
[0021] Figure 2 This is a top view of the present invention;
[0022] Figure 3 for Figure 1 A sectional view of section A in the middle;
[0023] Figure 4 This is a left-side view of the present invention;
[0024] Figure 5 This is a right-side view of the present invention;
[0025] Figure 6 This is a structural schematic diagram of the wrench of this utility model;
[0026] Figure 7 for Figure 6 A structural diagram from another direction;
[0027] Figure 8 This is a schematic diagram of the structure of the heat insulation sleeve of this utility model;
[0028] Figure 9 This is a schematic diagram of the structure of the first support of this utility model;
[0029] Figure 10 This is a front view of the main shaft of this utility model;
[0030] Figure 11 This is a top view of the main shaft of this utility model;
[0031] Figure 12 for Figure 11 Sectional view of section B;
[0032] Figure 13This is a schematic diagram of the structure of the stop block of this utility model;
[0033] Figure 14 This is a top view of the pressure plate of this utility model;
[0034] Figure 15 This is a front view of the pressure plate of this utility model;
[0035] Figure 16 This is a schematic diagram of the structure of the second support of this utility model;
[0036] Figure 17 This is a schematic diagram of the internal structure of the pressure bar of this utility model;
[0037] Figure 18 This is a schematic diagram of the internal structure of the bushing of this utility model;
[0038] Figure 19 This is a schematic diagram of the slider of this utility model;
[0039] Figure 20 This is a schematic diagram of the structure of the base plate of this utility model;
[0040] Figure 21 for Figure 20 Sectional view of section C;
[0041] Figure 22 This is a top view of the metal sheet of this utility model;
[0042] Figure 23 This is a side view of the metal sheet of this utility model.
[0043] In the picture:
[0044] 1. Wrench; 2. Connecting bolt; 3. Heat insulation sleeve; 4. First bracket; 5. Main shaft; 6. First fixing bolt; 7. Second fixing bolt; 8. Stop block; 9. Pressure plate; 10. Second bracket; 11. Pressure rod; 12. Bushing; 13. Pressure block; 14. Sliding block; 15. Base plate; 16. Metal sheet; 17. Third fixing bolt; 18. Limiting groove; 19. Slide groove; 20. Mating screw hole; 21. Rotating mating head; 22. Protective sleeve; 23. Mating rod. Detailed Implementation
[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0047] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
[0048] Example 1
[0049] This embodiment is a flip positioning fixture that can limit the rotation angle. The fixture can achieve flipping at a specific or limited angle and position and fix the clamped part, so that the processing end face of the clamped part is rotated to a specific angle, making the clamped part easier to process. It solves the problem that the clamped part is not easy to process due to the angle of the processing end face, and also solves the processing problem of the clamped part having two processing surfaces in different positions.
[0050] This embodiment describes the overall structure and structural components of the flipping positioning fixture; specific application areas are described in other embodiments.
[0051] It should be noted that the flipping in this embodiment does not specifically refer to horizontal flipping. Rotation at many angles, such as 60°, 90°, 100°, etc., can all be called flipping. The required flipping angle is different in different fields. The appropriate angle can be selected according to the flipping angle requirements of the clamped parts in different fields.
[0052] like Figures 1-23 As shown, Figures 1-2 , Figures 4-5The first part is an overall structural diagram of the fixture. The remaining drawings are of components and details. Referring to the drawings, a flipping positioning fixture capable of limiting the rotation angle in this embodiment includes a first bracket 4. The first bracket 4 can be fixed to the base plate 15 with screws to form an L-shaped structure. Different first brackets 4 can be replaced for different rotation angles. A rotatable spindle 5 is mounted on the first bracket 4. The spindle 5 has a clamping surface. The clamping surface is different depending on the clamped part. For example, some clamped parts have a planar structure, so the clamping surface is entirely planar; some clamped parts have an arc-shaped structure, so the clamping surface is entirely an arc-shaped structure that matches it. This embodiment uses a planar structure. For example, a positioning component is installed on the clamping surface. The positioning component fixes the clamped part on the clamping surface of the spindle 5. The positioning component includes any one or more combinations of a stop block 8, a pressure plate 9, and a slider 14. The stop block 8 limits or positions the clamped part, the pressure plate 9 presses the clamped part onto the clamping surface, and the movable slider 14 clamps the clamped part. Alternatively, the above combination can be used to position, press, and clamp the clamped part, thereby fixing the clamped part and preventing it from detaching from the clamping surface. Correspondingly, the spindle 5 has pre-drilled screw holes and grooves 19. The stop block 8 is fixed to the spindle 5 with screws, and the pressure plate 9 is fixed to the spindle 5 with screws.
[0053] Depending on the application, the specific structure of slider 14, pressure plate 9, and stop 8 should be changed to match the clamped part. For example, in some fields, stop 8 is a flat plate, which mainly serves as a blocking function, while in other fields, stop 8 is a T-shaped or L-shaped structure, which serves as a support and blocking function.
[0054] In this embodiment, a limiting groove 18 is provided on the first bracket 4. As one option, a limiting block is installed on the spindle 5. As another option, a movable mating component is installed on the spindle 5, and a limiting block is installed on the movable mating component. The limiting block is arranged in the limiting groove 18, so that when the spindle 5 rotates, the limiting block moves in the limiting groove 18. The spindle 5 can only rotate a specific angle, thereby allowing the clamping surface to reach different positions. For example, the processing surface of the clamped part is arranged vertically upward, and then the clamped part is processed.
[0055] The movable mating component can be a wrench 1. In the processing of some clamped parts, manual operation by the user is required. By turning the wrench 1, the spindle 5 rotates between two points under the action of the limit groove 18, and one or both end faces of the clamped part can be processed. As another implementation scheme, the movable mating component can be a non-manual operation structure such as a motor or rotary cylinder. The motor or rotary cylinder drives the spindle 5 to rotate. In addition, a limit switch can be installed on the first bracket 4. When the limit block moves to a specific position and contacts the limit switch, the controller of the motor and the controller of the rotary cylinder receive a feedback signal and can drive the spindle 5 to rotate in the opposite direction or stay for a set time and then rotate in the opposite direction. Taking the wrench 1 as an example, the wrench 1 is equipped with a heat insulation sleeve 3, which covers or partially covers the wrench 1. The heat insulation sleeve 3 is made of polytetrafluoroethylene resin to prevent the user from being burned when using the wrench 1 to rotate the spindle 5. The heat insulation sleeve 3 is fixedly connected to the wrench 1 by connecting bolts 2.
[0056] As a cooperating solution, in this embodiment, a fixing component can be installed on the first bracket 4, such as using magnets to fix the wrench 1. The wrench 1 has a metal plate that cooperates with the magnet. The fixing component of the first bracket 4 uses a magnet. When the wrench 1 moves to one end of the limiting groove 18, the magnet cooperates with the metal plate to fix the wrench 1, thereby fixing the main shaft 5. When it needs to be flipped, the magnet is forcefully separated from the metal plate, and the wrench 1 is moved to the other end of the limiting groove 18. Another magnet cooperates with the metal plate to fix the wrench 1, thereby fixing the main shaft 5. As other fixing component structures, this embodiment can also adopt various fixing and locking structures such as snap-fit structure, snap ring type structure, ratchet mechanism, etc.
[0057] As a specific implementation, in this embodiment, a bushing 12 is installed on the first support 4, and one end of the spindle 5 passes through the bushing 12 to reduce the friction between the spindle 5 and the first support 4, ensuring the stable rotation of the spindle 5. The bushing 12 acts similarly to a bearing. The bushing 12 can be used in small fixtures, and bearings can be used in medium and large fixtures. The bushing 12 can be made of brass. If the first support 4 is made of brass, the bushing 12 can also reduce or prevent wear on the first support 4, extending its service life. After the bushing 12 wears to a certain extent, it can be replaced. In addition, the flipping positioning fixture may also include a second support 10. The first support 4 and the second support 10 are arranged at intervals and used in conjunction. The second support 10 is fixed to the base plate 15 by screws. The second support 10 has a mating hole, and the end of the spindle 5 away from the first support 4 has a mating hole for use. The rotating mating head 21 is arranged in the mating hole of the second bracket 10. The second bracket 10 is used in conjunction with the first bracket 4, so that one end of the spindle 5 is arranged on the first bracket 4 and the other end of the spindle 5 is arranged on the second bracket 10, making the rotation of the spindle 5 more stable. In this embodiment, the mating hole is frustum-shaped, and the diameter of the end of the mating hole closer to the first bracket 4 is larger than the diameter of the end of the mating hole farther from the first bracket 4, so that the rotating mating head 21 can be smoothly inserted into the mating hole. In this embodiment, the second bracket 10 can also be made of brass, and the spindle 5 can also be made of brass. When the rotating mating head 21 is used in conjunction with the mating hole, grease can be applied to the mating hole, and a bearing can also be installed in the mating hole. If the spindle 5 is used for a short time or manually rotated at a low frequency, the two can also be directly mated. The wear degree is checked regularly to ensure the stable and high-precision rotation of the spindle 5.
[0058] As a specific solution for the movement and structure of the slider 14, a chute 19 is provided on the main shaft 5 in this embodiment. The slider 14 is slidably arranged in the chute 19, and a spring is installed in the chute 19. One end of the slider 14 abuts against one end of the spring. A mating screw hole 20 is provided on the main shaft 5, and the mating screw hole 20 communicates with the chute 19. A pressure rod 11 is screwed and installed on the mating screw hole 20. The other end of the slider 14 abuts against the end of the pressure rod 11. The pressure rod 11 is arranged in the mating screw hole 20, and the pressure rod 11 and the spring cooperate to fix the position of the slider 14. Both ends of the slider 14 are顶住. When it is necessary to adjust the position of the slider 14, move the pressure rod 11 to make the slider 14 move in the chute 19, and the pressure rod 11 abuts against the other end of the slider 14. As a specific solution for the pressure rod 11, in this embodiment, the position of the pressure rod 11 is moved by screwing. One end of the mating screw hole 20 is a through hole without threads, and the other end of the mating screw hole 20 is a threaded screw hole. The through hole without threads on the mating screw hole 20 communicates with the chute 19. The pressure rod 11 includes a mating rod 23. One end of the mating rod 23 is a smooth rod without threads, and the other end of the mating rod 23 is a threaded rod. A protective sleeve 22 is arranged on the threaded rod. The protective sleeve 22 has a gripping portion. For example, the gripping portion in this embodiment can be a protrusion, an anti-slip pattern, or the protective sleeve 22 is designed as a prism, and its edges can also be used as the gripping portion. The protective sleeve 22 in this embodiment can be made of polytetrafluoroethylene resin to avoid being scalded when using the pressure rod 11. The gripping portion can ensure that the user can grip more smoothly, especially for a slender structure like the pressure rod 11, ensuring that the pressure rod 11 can rotate stably.
[0059] A pressure block 13 is installed on the main shaft 5. The pressure block 13 presses above the slider 14 to make the slider 14 move along the chute 19. As a specific implementation solution, the slider 14 includes an edge plate and a convex plate located at the upper end of the edge plate. The upper end of the slider 14 is a "convex" - shaped structure, and the lower end of the slider 14 is a block. The pressure block 13 is arranged above the edge plate, and there is a gap between the pressure block 13 and the edge plate. The convex plate and the edge plate form a stepped structure. The edge plate is restricted by the pressure block 13, so that the slider 14 can move stably in the chute 19 and the slider 14 cannot脱离 from the chute 19. Correspondingly, a reserved screw hole is provided on the main shaft 5, and the pressure block 13 is fixed on the main shaft 5 by screws.
[0060] In this embodiment, the pressure block 13 is installed on the main shaft 5 by using the first fixing bolt 6, the stop block 8 is installed on the main shaft 5 by using the second fixing bolt 7, and the metal sheet 16 is installed on the bottom plate 15 by using the third fixing bolt 17. The metal sheet 16 is installed on the bottom plate 15. One end of the metal sheet 16 has an arc section. The metal sheet 16 is a copper sheet, and the arc section of the metal sheet 16 is arranged below the main shaft 5.
[0061] In terms of materials, the first bracket 4, the second bracket 10, the main shaft 5, the bushing 12, the base plate 15, etc. in this embodiment can be made of one material, such as brass H62 material, while the wrench 1, the stop block 8, the pressure plate 9, the pressure rod 11, the pressure block 13, and the slider 14 can be made of another material, such as stainless steel 12Cr17Ni7 material.
[0062] Example 2
[0063] This embodiment is based on embodiment 1, and applies the flipping positioning fixture in embodiment 1 to the field of gold wire bonding between vertical cavity surface laser and 3D ceramic. Specifically, the vertical cavity surface laser and the 3D ceramic are not located on the same plane, but are arranged perpendicularly. When performing gold wire bonding, the first gold ball solder joint needs to be formed on the vertical cavity surface laser first, and then the second gold ball solder joint needs to be formed on the bonding pad of the 3D ceramic.
[0064] As a specific application scheme, in this embodiment, the clamped part is placed on the spindle 5. In this embodiment, the clamped part is called a 3D adapter array. The stop block 8 is installed on the spindle 5 using the second fixing bolt 7. The stop block 8 and the pressure plate 9 fix the rear and right sides of the 3D adapter array. The pressure rod 11 is adjusted to move the slider 14, thereby fixing the 3D adapter array. At this time, the vertical cavity laser is arranged vertically upward, and the 3D ceramic bonding pad is arranged forward. The flip positioning fixture of this embodiment is placed on the heating table for heating preparation bonding. The bonding wrench works from top to bottom, forming gold balls through the synergistic effect of heat, pressure and / or ultrasonic energy. The first gold ball is formed on the vertical cavity laser. Then, the wrench 1 is used to achieve a 90-degree flip so that the 3D ceramic bonding pad is facing upward, and the second gold wire is welded. At this time, the vertical cavity laser is arranged backward, and the 3D ceramic bonding pad is arranged upward.
[0065] Example 3
[0066] This embodiment is based on Embodiment 1, applying the flipping positioning fixture from Embodiment 1 to the field of spot welding of irregularly shaped parts. Spot welding often involves using a welding torch to perform spot welding operations on irregularly shaped parts. For example, an irregularly shaped part has two planes with a common edge, forming a 60° angle. During welding, these two planes of the irregularly shaped part cannot always be arranged horizontally; they are referred to here as the first plane and the second plane. The inclined arrangement of the planes affects the welding effect. In this embodiment, the clamped part is placed on the spindle 5. The clamped part in this embodiment is referred to as the irregularly shaped part. The stop block 8 and the pressure plate 9 fix the rear and right sides of the irregularly shaped part. The pressure rod 11 is adjusted to move the slider 14, thereby fixing the irregularly shaped part. At this time, the first plane is arranged upwards, and the second plane is arranged downwards and forwards. The flipping positioning fixture is installed on the processing platform, and the part to be welded is spot welded onto the first plane using a welding torch. Rotation is achieved by operating the wrench 1, at which point the second plane is arranged upwards. The part to be welded is then spot welded onto the second plane using the welding torch.
[0067] Example 4
[0068] This embodiment is based on embodiment 1, and applies the flipping positioning fixture in embodiment 1 to the processing fields of drilling, grinding and other processes of parts.
[0069] During drilling and grinding, the machined surface is generally placed horizontally to avoid drilling deviation or uneven grinding. Parts are placed on the machining table of the machining equipment. However, for structural parts that cannot be kept horizontal, the machining table cannot be used, and a fixture is required. In this embodiment, the part is placed on the spindle 5, and the side and top surfaces, or other protruding surfaces, of the part are fixed by the stop block 8 and pressure plate 9. Adjusting the pressure rod 11 moves the slider 14, thereby fixing the part. Taking grinding as an example, if two surfaces need to be ground, one surface is first arranged facing upwards. After grinding, the wrench 1 is used to limit the movement. The component is flipped at a fixed angle, and then the second plane is arranged facing upwards. The grinding and drilling operations are similar. The component abuts against the spindle 5. First, a hole is drilled in one plane. The flipping at a fixed angle is achieved by operating the wrench 1. Then, another plane is drilled. For suspended components, that is, components that are thin and narrow, causing them not to contact the spindle 5, this embodiment can use an L-shaped stop 8 or a T-shaped stop 8. The stop 8 supports and blocks the component, and the pressure plate 9 squeezes the component to fix it. The pressure rod 11 is adjusted to move the slider 14, thereby limiting the component. Then, the above drilling-flipping-re-drilling operations are performed.
[0070] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0071] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.
Claims
1. A flip positioning clamp capable of limiting the rotation angle, characterized in that it comprises a first support (4) provided with a rotatable main shaft (5) on which a clamping surface is arranged, and a positioning component is arranged on the clamping surface to fix the clamped part on the clamping surface of the main shaft (5); a limiting groove (18) is arranged on the first support (4); a limiting block is arranged on the main shaft (5), or a movable matching component is arranged on the main shaft (5), and a limiting block is arranged on the movable matching component; and the limiting block is inserted into the limiting groove (18).
2. The flip positioning clamp capable of limiting the rotation angle according to claim 1, characterized in that the positioning component comprises any one or more than two combinations of a stop block (8), a pressing plate (9) and a sliding block (14).
3. The flip positioning clamp capable of limiting the rotation angle according to claim 2, characterized in that the main shaft (5) is provided with a sliding groove (19), the sliding groove (19) is slidably provided with a sliding block (14), a spring is arranged in the sliding groove (19), and one end of the sliding block (14) abuts against one end of the spring; and the main shaft (5) is provided with a pressing block (13) which is arranged above the sliding block (14) to make the sliding block (14) move along the sliding groove (19).
4. The flip positioning clamp capable of limiting the rotation angle according to claim 3, characterized in that the main shaft (5) is provided with a matching screw hole (20) which is communicated with the sliding groove (19), a pressing rod (11) is screwed on the matching screw hole (20), and the other end of the sliding block (14) abuts against the end of the pressing rod (11).
5. The flip positioning clamp capable of limiting the rotation angle according to claim 4, characterized in that one end of the matching screw hole (20) is a non-threaded through hole, the other end of the matching screw hole (20) is a threaded hole, and the non-threaded through hole of the matching screw hole (20) is communicated with the sliding groove (19); and the pressing rod (11) comprises a matching rod (23), one end of the matching rod (23) is a non-threaded smooth rod, the other end of the matching rod (23) is a threaded rod, a protective sleeve (22) is arranged on the threaded rod, and a holding part is arranged on the protective sleeve (22).
6. The flip positioning clamp capable of limiting the rotation angle according to claim 3, characterized in that the sliding block (14) comprises an edge plate and a convex plate arranged on the upper end of the edge plate, the pressing block (13) is arranged above the edge plate, and the pressing block (13) has a spacing with the edge plate.
7. The flip positioning clamp capable of limiting the rotation angle according to claim 1, characterized in that it further comprises a second support (10), the first support (4) and the second support (10) are arranged in a spaced manner, the second support (10) is provided with a matching hole, the end of the main shaft (5) away from the first support (4) is provided with a rotating matching head (21) which is used in cooperation with the matching hole, and the rotating matching head (21) is arranged in the matching hole of the second support (10). 8. The turnover positioning fixture capable of limiting the rotation angle according to claim 7, characterized in that: the matching hole is a circular truncated cone, and the diameter of the end of the matching hole close to the first support (4) is larger than the diameter of the end of the matching hole away from the first support (4).
9. The turnover positioning fixture capable of limiting the rotation angle according to claim 1, characterized in that: the first support (4) is provided with a bushing (12), and one end of the main shaft (5) is arranged in the bushing (12).
10. The turnover positioning fixture capable of limiting the rotation angle according to claim 1, characterized in that: the movable matching component is provided with a heat insulation sheath (3).