Curved surface positioning clamp for forge piece machining
By designing a curved surface positioning fixture, combined with lifting equipment and an electrically controlled telescopic rod, the problems of laborious positioning and safety hazards of traditional forging fixtures for heavy workpieces have been solved, achieving fast, stable clamping and efficient processing of complex curved surface forgings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional forging fixtures are laborious and time-consuming to adjust the position of heavy workpieces, pose safety hazards, and are difficult to adapt to the high-efficiency clamping requirements of complex curved surfaces.
A curved surface positioning fixture was designed, which adopts a structure of straight rod, outer sleeve, electrically controlled telescopic rod and meshing teeth. Combined with lifting equipment, it can realize rapid gripping and rotation adjustment. The electrically controlled telescopic rod drives the tooth and gear to lock, which can adapt to complex curved surfaces with different curvatures. The arc-shaped clamping plate and positioning hole support diversified clamping.
It enables rapid loading and unloading of forgings, reduces operational difficulty and safety hazards, improves machining accuracy and efficiency, adapts to stable clamping of complex curved surfaces, and enhances the versatility and safety of the fixture.
Smart Images
Figure CN223981497U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fixtures for forging processing, specifically a curved surface positioning fixture for forging processing. Background Technology
[0002] In the field of forging processing, especially in the precision machining of large and complex curved surface forgings, accurate workpiece positioning and efficient clamping directly affect machining accuracy and production efficiency. These forgings are typically characterized by their large weight and non-linear curvature of the surface, while traditional fixtures have significant technical shortcomings in meeting the positioning requirements of heavy workpieces.
[0003] Traditional forging fixtures often employ structures such as bolt plates and V-blocks. When forging heavy forgings, operators must use a crane to lift the forging onto the forging table individually before using positioning fixtures to fine-tune its position. Due to the excessive weight of the workpiece, operators find it very strenuous to fine-tune the forging's position. Furthermore, traditional methods of loading and unloading forgings are labor-intensive, time-consuming, and pose safety hazards. Utility Model Content
[0004] This application provides a curved surface positioning fixture for forging processing, which can realize the rapid gripping of forgings. With the help of the lifting equipment in the workshop, the forgings can be loaded and unloaded quickly. Furthermore, the position of the forging can be easily adjusted by rotating the fixture during the forging process, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a curved surface positioning fixture for forging processing, comprising a straight rod; an outer sleeve is rotatably connected to the right end of the outer side of the straight rod, and an outer shell is fixedly connected to the right end of the straight rod through the outer sleeve; a lifting lug is provided in the middle of the outer side of the outer sleeve, and a positioning sleeve is provided at the left end of the outer side of the outer sleeve; an electrically controlled telescopic rod is installed on the outer side of the positioning sleeve; a gear is fixedly installed on the outer side of the straight rod; a tooth is installed at the telescopic end of the electrically controlled telescopic rod, and the tooth is correspondingly engaged with the tooth groove of the gear.
[0006] The right end of the straight rod has a hollow section, and an electrically controlled telescopic rod II is installed inside the hollow section. The telescopic end of the electrically controlled telescopic rod II is equipped with a mounting seat, which is located inside the outer shell. Both the front and rear ends of the inner side of the outer shell are rotatably connected with engagement teeth. The ends of the engagement teeth are rotatably connected to the outer shell through a rotating shaft. The outer side of the engagement teeth is rotatably connected to a connecting rod through a pin, and the other end of the connecting rod is rotatably connected to the mounting seat through a pin.
[0007] Preferably, a handle is installed on the left end of the outer side of the straight rod.
[0008] Preferably, the inner side of the positioning sleeve is provided with a sliding groove, and the insert tooth is slidably connected to the sliding groove.
[0009] Preferably, the outer surface of the biting teeth is provided with an arc-shaped biting groove that fits against the outer surface of the forging, and the inner surface of the arc-shaped biting groove is provided with anti-slip teeth.
[0010] Preferably, the outer surface of the biting tooth is provided with at least one positioning hole at the end away from the outer shell.
[0011] Preferably, an arc-shaped clamp is installed on the outer side of the biting tooth, and a positioning plate is provided on the outer side of the arc-shaped clamp. The positioning plate is fixed to the biting tooth by bolts, and the bolt studs pass through the positioning holes.
[0012] Preferably, the upper and lower ends of the outer surface of the biting tooth are equipped with arc-shaped clamping plates. The arc-shaped clamping plates are fixed to the biting tooth by long bolts. The studs of the long bolts pass through the positioning holes. The shape of the arc-shaped clamping plates is consistent with that of the biting tooth.
[0013] This curved surface positioning fixture for forging has the following advantages:
[0014] 1. By rotating the straight rod and the outer sleeve and using the gear-shaping tooth locking design, combined with the electric telescopic rod drive, the fixture can be rotated quickly and the angle can be fixed. After the operator rotates and adjusts the position of the forging, the position of the straight rod can be fixed by the gear-shaping tooth locking design, which can effectively prevent the rotation of the straight rod from affecting the machining accuracy.
[0015] 2. By using the lifting lugs on the outside of the outer sleeve in conjunction with the workshop lifting equipment, the forgings can be directly gripped, hoisted and unloaded, reducing intermediate handling links and shortening the processing cycle; the biting teeth are linked by the connecting rod and the electrically controlled telescopic rod, and the arc-shaped biting groove at the end can fit the curved surface shape of the forging. Combined with the replaceable arc-shaped clamping plate, it can adapt to complex curved surface forgings with different curvature changes and ensure clamping stability.
[0016] 3. The positioning hole and bolt / long bolt fixing design supports the quick replacement of the arc-shaped clamping plate, meeting the needs of diverse workpiece sizes and shapes, improving the versatility of the fixture. The handle at the left end of the straight rod provides an additional operating fulcrum. Combined with the sliding groove-guided gear movement, the rotation and locking actions are smoother, reducing the difficulty of operation and safety hazards. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;
[0018] Figure 2 This is a partial sectional view of the main view of this application;
[0019] Figure 3 This is a partial top cross-sectional view of this application;
[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this application.
[0021] In the diagram: 1. Handle, 2. Straight rod, 3. Electrically controlled telescopic rod I, 4. Lifting lug, 5. Outer shell, 6. Rotary shaft, 7. Positioning hole, 8. Engaging teeth, 9. Arc-shaped clamping plate I, 10. Positioning plate, 11. Outer sleeve, 12. Positioning sleeve, 13. Inserting teeth, 14. Gear, 15. Slide groove, 16. Electrically controlled telescopic rod II, 17. Mounting base, 18. Engaging teeth, 19. Connecting rod, 20. Long bolt, 21. Arc-shaped clamping plate II. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.
[0024] Please see Figure 1-4 This application provides the following technical solutions:
[0025] Example 1: A curved surface positioning fixture for forging processing includes a straight rod 2; an outer sleeve 11 is rotatably connected to the right end of the outer side of the straight rod 2, and an outer shell 5 is fixedly connected to the right end of the outer sleeve 11 through the outer sleeve 11. A lifting lug 4 is provided in the middle of the outer side of the outer sleeve 11, and a positioning sleeve 12 is provided at the left end of the outer side of the outer sleeve 11. An electrically controlled telescopic rod 3 is installed on the outer side of the positioning sleeve 12, and a gear 14 is fixedly installed on the outer side of the straight rod 2. A tooth 13 is installed at the telescopic end of the electrically controlled telescopic rod 3, and the tooth 13 and the tooth groove of the gear 14 are correspondingly connected.
[0026] Specifically, the rotational freedom of the fixture is controlled by the rotational connection between the straight rod 2 and the outer sleeve 11, combined with the locking structure of the gear 14-shaft 13; the design of the lifting lug 4 facilitates coordinated operation with the crane to quickly complete the gripping and hoisting of forgings; the electrically controlled telescopic rod 3 drives the shaft 13 to engage with the tooth groove of the gear 14, providing a quick angle locking function and avoiding the laborious operation of manually adjusting heavy workpieces.
[0027] The right end of the straight rod 2 has a hollow section, and an electrically controlled telescopic rod 16 is installed inside the hollow section. The telescopic end of the electrically controlled telescopic rod 16 is equipped with a mounting seat 17. The mounting seat 17 is located inside the outer shell 5. Both the front and rear ends of the inner side of the outer shell 5 are rotatably connected with engagement teeth 8. The ends of the engagement teeth 8 are rotatably connected to the outer shell 5 through a rotating shaft 6. The outer side of the engagement teeth 8 is rotatably connected to a connecting rod 19 through a pin 1. The other end of the connecting rod 19 is rotatably connected to the mounting seat 17 through a pin 2.
[0028] Specifically, the hollow section integrates an electrically controlled telescopic rod 216. The electrically controlled telescopic rod 216 can drive two meshing teeth 8 to open and close in a coordinated manner through telescopic movement, so as to realize the automatic adjustment of the clamping force. The linkage transmission structure converts the telescopic motion into the rotational clamping action of the meshing teeth, ensuring a smooth and efficient clamping process, and is suitable for curved forgings of different sizes.
[0029] Furthermore, a handle 1 is installed on the left end of the outer side of the straight rod 2.
[0030] Specifically, handle 1 is welded to the end of straight rod 2, and the handle 1 increases the ease of operation.
[0031] Furthermore, the inner side of the positioning sleeve 12 is provided with a sliding groove 15, and the insert tooth 13 is slidably connected to the sliding groove 15.
[0032] Specifically, the slide 15 precisely guides the movement trajectory of the gear 13, preventing misalignment between the gear 13 and the gear 14 and improving locking reliability.
[0033] Furthermore, the outer side of the biting tooth 8 is provided with an arc-shaped biting groove that fits against the outer surface of the forging, and the inner side of the arc-shaped biting groove is provided with anti-slip teeth 18.
[0034] Specifically, the arc-shaped engagement groove and the anti-slip teeth 18 work together to increase the contact area with the curved surface of the forging, disperse the clamping stress, prevent scratches on the workpiece surface, and enhance the anti-slip capability.
[0035] Furthermore, the outer side of the biting tooth 8, away from the outer casing 5, is provided with at least one positioning hole 7.
[0036] Specifically, positioning hole 7 supports the quick installation and replacement of modular clamping components, adapting to the needs of forgings of different shapes and sizes, and improving the versatility of the fixture.
[0037] Furthermore, an arc-shaped clamping plate 9 is installed on the outer side of the biting tooth 8, and a positioning plate 10 is provided on the outer side of the arc-shaped clamping plate 9. The positioning plate 10 is fixed to the biting tooth 8 by bolts, and the stud of the bolts passes through the positioning hole 7.
[0038] Specifically, the arc-shaped clamping plate 9 and the positioning plate 10 are designed together to provide an adjustable clamping surface. The clamping force is evenly distributed by bolt fixing, avoiding local stress concentration that could cause workpiece deformation. The arc-shaped surface of the arc-shaped clamping plate 9 is designed to fit the curved surface of the forging.
[0039] Example 2:
[0040] The main difference between this embodiment and Embodiment 1 is the form of the arc-shaped clamp, specifically:
[0041] A curved surface positioning fixture for forging processing includes a straight rod 2; an outer sleeve 11 is rotatably connected to the right end of the outer side of the straight rod 2, and an outer shell 5 is fixedly connected to the right end of the straight rod 2 through the outer sleeve 11; a lifting lug 4 is provided in the middle of the outer side of the outer sleeve 11; a positioning sleeve 12 is provided at the left end of the outer side of the outer sleeve 11; an electrically controlled telescopic rod 3 is installed on the outer side of the positioning sleeve 12; a gear 14 is fixedly installed on the outer side of the straight rod 2; a tooth 13 is installed at the telescopic end of the electrically controlled telescopic rod 3, and the tooth 13 and the tooth groove of the gear 14 are correspondingly engaged.
[0042] The right end of the straight rod 2 has a hollow section, and an electrically controlled telescopic rod 16 is installed inside the hollow section. The telescopic end of the electrically controlled telescopic rod 16 is equipped with a mounting seat 17. The mounting seat 17 is located inside the outer shell 5. Both the front and rear ends of the inner side of the outer shell 5 are rotatably connected with engagement teeth 8. The ends of the engagement teeth 8 are rotatably connected to the outer shell 5 through a rotating shaft 6. The outer side of the engagement teeth 8 is rotatably connected to a connecting rod 19 through a pin 1. The other end of the connecting rod 19 is rotatably connected to the mounting seat 17 through a pin 2.
[0043] Furthermore, a handle 1 is installed on the left end of the outer side of the straight rod 2.
[0044] Furthermore, the inner side of the positioning sleeve 12 is provided with a sliding groove 15, and the insert tooth 13 is slidably connected to the sliding groove 15.
[0045] Furthermore, the outer side of the biting tooth 8 is provided with an arc-shaped biting groove that fits against the outer surface of the forging, and the inner side of the arc-shaped biting groove is provided with anti-slip teeth 18.
[0046] Furthermore, the outer side of the biting tooth 8, away from the outer casing 5, is provided with at least one positioning hole 7.
[0047] Furthermore, both the upper and lower ends of the outer side of the biting tooth 8 are equipped with arc-shaped clamping plates 21. The arc-shaped clamping plates 21 are fixed to the biting tooth 8 by long bolts 20. The studs of the long bolts 20 pass through the positioning holes 7. The shape of the arc-shaped clamping plates 21 is consistent with that of the biting tooth 8.
[0048] Specifically, the upper and lower symmetrical arc-shaped clamping plates 21 are fixed by long bolts 20 to form a multi-point clamping structure, which enhances the wrapping of complex curved forgings and further improves clamping stability and machining accuracy.
[0049] In use: Hang the lifting lug 4 on the hook of the overhead crane in the workshop. When clamping the forging, control the lifting and lowering of the overhead crane hook to suspend the straight rod 2 in a suitable position in the air. Then, the user holds the straight rod 2 to clamp the two open teeth 8 to the workpiece. Then, start the electric telescopic rod 16. The electric telescopic rod 16 retracts and drives the teeth 8 to perform a biting action until the two teeth 8 clamp the workpiece.
[0050] Start the overhead crane to lift the workpiece. During the lifting and lowering process, the operator always holds handle 1 and uses the lever principle to easily lift the workpiece. Then, push the tool to the forging table through handle 1.
[0051] After the workpiece is placed on the forging table, the user holds handle 1 to fix the position of the workpiece. At this time, the workpiece can be forged. When the workpiece needs to be rotated 90 degrees, the electric telescopic rod 3 retracts to remove the pick 13 from the tooth groove of the gear 14. Then the user rotates the workpiece 90 degrees through the straight rod 1. After the rotation is completed, the meshing tooth 8 is released. After adjusting the position of the meshing tooth 8, the electric telescopic rod 3 extends to re-insert the pick 13 into the tooth groove of the gear 14 to fix the position of the straight rod 2.
[0052] It is worth noting that in this application, the input ends of both the electrically controlled telescopic rod 13 and the electrically controlled telescopic rod 216 are electrically connected to the output end of an external power supply via an external control switch.
[0053] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A curved surface positioning fixture for use in the machining of a forged article, characterized by: The utility model provides a kind of telescopic handle, including straight rod (2);The outer side right end of the straight rod (2) is rotatably connected with outer sleeve (11), and the right end of straight rod (2) is fixedly connected with outer shell (5) through outer sleeve (11), and the outer side middle part of outer sleeve (11) is equipped with lug (4), and the outer side left end of outer sleeve (11) is equipped with positioning sleeve (12), and the outer side of positioning sleeve (12) is installed with electric control telescopic rod one (3), and the outer side of straight rod (2) is fixedly installed with gear (14), and the telescopic end of electric control telescopic rod one (3) is installed with pinion (13), and pinion (13) and the tooth groove of gear (14) are inserted and correspondingly arranged; The right end of straight rod (2) is equipped with hollow section, and the inside of hollow section is installed with electric control telescopic rod two (16), and the telescopic end of electric control telescopic rod two (16) is installed with mounting seat (17), and mounting seat (17) is arranged in the inside of outer shell (5), and the inner side of outer shell (5) is rotatably connected with occlusal tooth (8) at both ends, and the end of occlusal tooth (8) is rotatably connected with outer shell (5) by pivot (6), and the outer side of occlusal tooth (8) is rotatably connected with connecting rod (19) by pin shaft one, and the other end of connecting rod (19) is rotatably connected with mounting seat (17) by pin shaft two.
2. A curved surface positioning fixture for machining a forged piece according to claim 1, characterized in that: The left end of the outer side of straight rod (2) is installed with handle (1).
3. The curved surface positioning fixture for machining a forged piece according to claim 1, characterized in that: The inner side of positioning sleeve (12) is equipped with sliding slot (15), and pinion (13) and sliding slot (15) are slidably connected.
4. The curved surface positioning fixture for machining a forged piece according to claim 1, characterized in that: The outer side of occlusal tooth (8) is equipped with arc-shaped occlusal groove that is attached to the outer surface of forge piece, and the inner side of arc-shaped occlusal groove is equipped with anti-skid tooth (18).
5. The curved surface positioning fixture for machining a forged piece according to claim 1, characterized in that: The outer side of occlusal tooth (8) is equipped with not less than one positioning hole (7) away from outer shell (5).
6. A curved surface positioning fixture for machining a forged piece according to claim 5, characterized in that: The outer side of occlusal tooth (8) is installed with arc-shaped clamping plate one (9), and the outer side of arc-shaped clamping plate one (9) is equipped with positioning plate (10), and positioning plate (10) is fixed on occlusal tooth (8) by bolt, and the stud of bolt is arranged through positioning hole (7).
7. A curved surface positioning fixture for machining a forged piece according to claim 5, characterized in that: The outer side of occlusal tooth (8) is installed with arc-shaped clamping plate two (21) at both ends, and arc-shaped clamping plate two (21) is fixed on occlusal tooth (8) by long bolt (20), and the stud of long bolt (20) is arranged through positioning hole (7), and the shape of arc-shaped clamping plate two (21) is consistent with occlusal tooth (8).