A gusset riveting tool

Abstract

The application discloses a kind of angle sheet riveting tool, including: base, multiple supporting legs connected in the bottom of base and girder compression device slidingly connected on base, the end of base is connected with the base plate for limiting the position of workpiece end;Girder compression device includes sliding mechanism with base sliding fit, cam compression mechanism connected in the top of sliding mechanism, rotation limiting mechanism connected on cam compression mechanism and vertical compression mechanism arranged on rotation limiting mechanism;Workpiece is placed along the length direction of base and end position is limited by base plate, cam compression mechanism is laterally compressed to workpiece, and rotation limiting mechanism drives vertical compression mechanism to vertically compress workpiece.The application realizes two-way compression to workpiece by vertical compression mechanism and cam compression mechanism, and it is simple to operate, without repeated disassembly, just need to rotate cam compression mechanism and rotation limiting mechanism, and it is also suitable for different sizes of girders, so as to facilitate angle sheet riveting.

Description

Technical Field

[0001] This invention relates to the field of aircraft parts assembly technology, specifically to a tooling for riveting corner pieces. Background Technology

[0002] In large-diameter, thin-walled cylindrical riveting parts, the corner pieces are used to fix the middle frame of the riveting parts. The fixing methods for the middle frame include... Figure 1 As shown, the fixed beam is a T-shaped stringer. The T-shaped stringer is pre-installed on the corner piece riveting fixture. After the middle frame is installed and positioned, the corner pieces and T-shaped stringers are fixed with G-type fixing clamps. Simultaneously, riveting holes are made on the T-shaped stringers, and they are riveted together with rivets. After the steel frame structure, including the corner pieces, T-shaped stringers, and end frames, is installed, the middle frame is assembled. The middle frame is aligned with the corner pieces on the T-shaped stringers, and then riveting holes are made on the middle frame, followed by riveting with rivets. Therefore, the installation of the middle frame for large-diameter thin-walled cylindrical riveting components mainly involves the fixing and positioning of the corner pieces.

[0003] Traditional corner piece assembly tooling (such as Figure 2 As shown in the diagram, first calculate the distance between the riveting position of the corner piece on the T-shaped stringer and the edge of the T-shaped stringer. Then, drill corresponding threaded holes on the steel base. Further, select a special clamping block according to the dimensions of the T-shaped stringer, clamp the T-shaped stringer with clamping bolts, connect the positioning bolts to the base bolts, fix the clamping block, move the preload nut upwards, and clamp the T-shaped stringer with the clamping bolts. The clamping block has high flatness on both sides, which can serve as the positioning surface and the mounting surface of the middle frame. The corner piece is placed on one side of the clamping block, and then a G-type fixing clamp is used to fix the corner piece and the T-shaped stringer. Riveting holes are made on the T-shaped stringer, and rivets are used for riveting. Traditional corner piece assembly fixtures have the following drawbacks:

[0004] (1) The operation is complicated and requires repeated disassembly and tightening of bolts.

[0005] (2) Positioning holes need to be made on the base according to the installation position of the middle frame. The number and position of positioning holes will be different for different projects. Positioning holes need to be made again. Too many positioning holes will overlap with the positioning holes for the next riveting, the base will be scrapped and the service life will be short.

[0006] (3) Only special clamping blocks can be designed for stringers of different sizes, which has poor versatility and cannot match stringers of different sizes. Summary of the Invention

[0007] The purpose of this invention is to provide a tooling for corner piece riveting, so as to solve the problem that the existing corner piece riveting tooling is complicated to operate and cannot be applied to stringers of different sizes.

[0008] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0009] A tooling for riveting corner pieces includes: a base, a plurality of legs connected to the bottom of the base, and a stringer clamping device slidably connected to the base. The end of the base is connected to a base plate for limiting the position of the workpiece end.

[0010] The stringer clamping device includes a sliding mechanism that slides with the base, a cam clamping mechanism connected to the top of the sliding mechanism, a rotation limiting mechanism connected to the cam clamping mechanism, and a vertical clamping mechanism provided on the rotation limiting mechanism.

[0011] The workpiece is placed along the length of the base and its end position is restricted by the base plate. The cam clamping mechanism clamps the workpiece laterally, and the rotation limiting mechanism drives the vertical clamping mechanism to clamp the workpiece vertically.

[0012] The sliding mechanism of this invention slides with the base, allowing the position of the entire stringer clamping device to be changed by sliding, while simultaneously being fixed to the base. The workpiece is mounted on the base with its reference surface in close contact with the base plate. The workpiece is a T-shaped stringer. The cam clamping mechanism is driven to clamp the side of the workpiece. The rotation limiting mechanism is rotated, which drives the vertical clamping mechanism to rotate. When the vertical clamping mechanism clamps the workpiece vertically, the rotation limiting mechanism can automatically lock. Reversing the rotation limiting mechanism can drive the vertical clamping mechanism to loosen its grip on the workpiece. The vertical clamping mechanism and the cam clamping mechanism achieve bidirectional clamping of the workpiece. The operation is simple, requiring no repeated disassembly; only the cam clamping mechanism and the rotation limiting mechanism need to be rotated. It can also clamp stringers of different sizes, thus facilitating the assembly, riveting, and positioning of corner pieces.

[0013] Furthermore, the aforementioned rotation limiting mechanism includes a support block, a reference block rotatably connected to the top of the support block, a support plate connected to the support block, a first connecting rod rotatably engaged with the end of the reference block away from the support block, a second connecting rod rotatably engaged with the first connecting rod, and a push rod rotatably connected to the support plate. The end of the second connecting rod away from the first connecting rod is rotatably connected to the top of the support plate. A limiting rod is rotatably connected between the second connecting rod and the push rod. The limiting rod is provided with a limiting nose that engages with the second connecting rod.

[0014] When the push rod rotates, it sequentially drives the limit rod, connecting rod two, connecting rod one, reference block and vertical clamping mechanism to rotate in linkage. When the limit rod locks or releases the connecting rod two, the vertical clamping mechanism vertically clamps or releases the workpiece.

[0015] The reference block of this invention is used to install a vertical clamping mechanism. It forms a six-bar linkage by combining a support plate, connecting rod one, connecting rod two, the reference block, a limiting rod, and a push rod. Driving the push rod to rotate around the support plate sequentially drives the limiting rod, connecting rod two, connecting rod one, and the reference block to rotate in tandem. When the limiting nose of the limiting rod contacts the upper surface of connecting rod two, the reference block rotates to a horizontal position, simultaneously causing the vertical clamping mechanism on the reference block to vertically clamp the T-shaped stringer. Further rotation of the push rod causes the limiting nose of the limiting rod to lock the connecting rod two. After the limiting rod locks the connecting rod two, it restricts the rotation of the push rod and connecting rod two, thereby restricting the rotation of components such as connecting rod one and the reference block, ensuring the vertical clamping mechanism maintains vertical clamping on the T-shaped stringer. Thus, clamping and releasing the T-shaped stringer can be achieved simply by rotating the push rod, making operation simple, convenient, and time-saving.

[0016] Furthermore, the aforementioned reference block includes a base block one, a base block two, and a connecting plate connecting the base block one and the base block two. A through groove is provided on the connecting plate, and an installation cavity for installing a vertical clamping mechanism is formed between the base block one, the base block two, and the connecting plate.

[0017] The side wall of base block one away from the connecting plate is provided with a lug that rotates with the top of the support block, and the side wall of base block two away from base block one is provided with a hinge seat that rotates with connecting rod one.

[0018] The support plate has symmetrical limit blocks on both sides to limit the rotational position of the push rod.

[0019] Furthermore, the aforementioned connecting rod 2 has a pivot A between it and the limiting rod, a pivot B between the limiting rod and the push rod, and a pivot C between the push rod and the support plate;

[0020] When the push rod rotates to the limit nose and contacts the second connecting rod, the sum of the distances between shaft A and shafts B and C is greater than the distance between shaft B and shaft C.

[0021] As the push rod continues to rotate, it is positioned vertically. Under the action of elastic deformation, the sum of the distances between shaft A and shafts B and C is equal to the distance between shaft B and shaft C, and shafts A, B, and C are all located on the same straight line.

[0022] The push rod continues to rotate, and under the action of elastic deformation, it continues to rotate and passes through the vertical direction. Then, under the action of elastic deformation, the limiting nose locks the second connecting rod.

[0023] The push rod of the present invention rotates around the support plate and makes the reference block horizontal. At this time, the push rod approaches the vertical direction, the limiting nose of the limiting rod contacts the upper surface of the connecting rod two, and the sum of the distances between the rotating shaft A and the rotating shafts B and C is greater than the distance between the rotating shafts B and C. At this time, the limiting rod does not lock the connecting rod two, and the vertical pressing mechanism on the reference block vertically presses the T-shaped stringer. Further push the push rod to rotate, positioning it vertically. Under the action of elastic deformation, the sum of the distances between shaft A and shafts B and C equals the distance between shaft B and shaft C. Shafts A, B, and C are all on the same straight line. At this point, connecting rod 2, connecting rod 1, and the reference block do not rotate. The limiting nose of the limiting rod limits connecting rod 2 but does not lock it. Continue pushing the push rod to rotate, causing it to bypass the aforementioned vertical direction. When the push rod crosses the vertical direction, the elastically deformed components spring back, causing the push rod to lock connecting rod 2, thereby locking the entire mechanism. The entire locking process is simple and reliable.

[0024] Furthermore, the aforementioned vertical clamping mechanism includes a slide cylinder, a locking member threaded to the top outer wall of the slide cylinder, a sliding clamping member that slides with the inner wall of the slide cylinder, and a limiting member disposed on the slide cylinder to limit the sliding position of the sliding clamping member. A limiting ring is annularly connected to the outer wall of the slide cylinder, and the top of the slide cylinder passes through the through groove and is locked by the locking member.

[0025] The sliding clamping component includes a clamping plate and a slide rod connected to the top of the clamping plate and slidingly engaged with the inner wall of the slide cylinder. The outer wall of the slide rod has multiple notches axially opened, and the limiting component passes through the slide cylinder and is inserted into the notches.

[0026] The vertical clamping mechanism of this invention uses a limiting ring and a locking member on the sliding cylinder to connect and lock with the connecting plate in the reference block. The limiting ring and locking member work together to restrict the axial movement of the sliding cylinder. The sliding engagement between the sliding clamping member and the sliding cylinder can adjust the distance between the sliding clamping member and the T-shaped stringer, ultimately making the sliding clamping member contact and clamp the top of the T-shaped stringer. Then, the limiting member limits the sliding clamping member, thereby achieving vertical clamping of the T-shaped stringer. There is no need for repeated disassembly and tightening of the fastening nut. Moreover, the high-frequency vibration generated by the riveted corner pieces on the T-shaped stringer during operation will not cause the limiting member to loosen. The limiting member's limiting and fixing structure for the sliding clamping member is stable and reliable. The sliding clamping member can be adjusted by pulling the limiting member outward, and the sliding clamping member can be fixed by loosening the limiting member. The operation is convenient.

[0027] Furthermore, the aforementioned slide cylinder includes a first connecting section and a second connecting section connected sequentially from top to bottom. The locking member is threadedly connected to the top outer wall of the first connecting section, the limiting ring is located at the connection position between the first connecting section and the second connecting section, and the slide rod is slidably engaged with the inner wall of the second connecting section.

[0028] The side wall of the second connecting section is connected to a fixed sleeve. The limiting component includes a fixed cover and a pin. The fixed cover is threadedly connected to the fixed sleeve. The pin passes through the fixed cover, the fixed sleeve and the second connecting section in sequence and is inserted into the notch. A limiting block is provided on the outer wall of the pin located inside the fixed sleeve. A spring is sleeved on the outer wall of the pin. The spring is located between the limiting block and the fixed cover. A pull ring is movably connected to the end of the pin located outside the fixed sleeve.

[0029] The fixed sleeve has a third shaft hole. The diameter of the pin is smaller than the diameter of the third shaft hole. The size of the limiting block is matched with the diameter of the third shaft hole.

[0030] In this invention, the sliding rod slides into the second connecting section, allowing the position of the clamping plate to be adjusted by sliding it up and down. Ultimately, the clamping plate contacts and abuts against the T-shaped stringer. Then, a limiting member passes through the fixing sleeve and inserts into the notch, restricting the up-and-down sliding position of the sliding clamping member. This ensures the sliding clamping member can press against the T-shaped stringer, and the high-frequency vibration generated by the riveted corner pieces on the T-shaped stringer during operation will not cause the limiting member to loosen. Multiple notches facilitate adjustment of the clamping plate's position and can press against T-shaped stringers of different sizes, making it widely applicable.

[0031] Furthermore, the aforementioned cam clamping mechanism includes a cylindrical connecting block, a limiting sleeve, a lateral pressure member, and a cam. The cylindrical connecting block is connected to the bottom of the support block and extends into the limiting sleeve. The lateral pressure member passes radially through the limiting sleeve and the cylindrical connecting block, and the inner diameter of the limiting sleeve is larger than the outer diameter of the cylindrical connecting block. The cam rotates and engages on the outer side of the limiting sleeve, and both ends of the lateral pressure member contact the inner wall of the cam.

[0032] The cam and the limiting sleeve move axially along the lateral pressure member, and the cam rotates around the limiting sleeve, so that the outer edge of the cam contacts the side of the workpiece, and the lateral pressure member makes the cam press the workpiece against the workpiece.

[0033] The cylindrical connecting block of this invention is connected to the bottom of the support block. A lateral pressure member is radially inserted into the limiting sleeve and the cylindrical connecting block. In use, the cam rotates around the limiting sleeve and contacts the side of the workpiece. Then, the cam is pulled to move away from the workpiece, and the limiting sleeve and cam move along the lateral pressure member, causing the side wall of the cylindrical connecting block to contact the inner side wall of the limiting sleeve. At this time, the lateral pressure member exerts a certain pressure. The cam is then rotated so that its outer edge contacts the side of the workpiece. The cam is then released, and under the action of the lateral pressure member, it exerts a certain pressure on the side of the workpiece, thus pressing the side of the workpiece tightly. The cam of this invention, in conjunction with the limiting sleeve, cylindrical connecting block, and lateral pressure member, can press and limit T-shaped stringers of different sizes, and is simple, convenient, and highly versatile.

[0034] Furthermore, the aforementioned lateral pressure component includes a pin and a first spring. The pin passes radially through the limiting sleeve and the cylindrical connecting block. The first spring is sleeved on one end of the pin, and the two ends of the first spring contact the side wall of the cylindrical connecting block and the inner wall of the cam, respectively. The cam presses the component to be limited against the pin through the first spring.

[0035] The cylindrical connecting block has a through hole that matches the size of the pin. The side wall of the limiting sleeve has two symmetrical insertion holes. The pin is inserted into one insertion hole of the limiting sleeve, the through hole of the cylindrical connecting block, and the other insertion hole of the limiting sleeve in sequence. The first spring passes through one of the insertion holes and its two ends contact the side wall of the cylindrical connecting block and the inner wall of the cam, respectively.

[0036] The cylindrical connecting block has a limiting mounting groove on its side wall that communicates with the through hole and is used to limit the position of the first spring.

[0037] The limiting mounting groove on the side wall of the cylindrical connecting block of the present invention is used to limit the movement position of the first spring, so that the first spring can be compressed to generate pressure. The pin is inserted into one insertion hole of the limiting sleeve, the through hole of the cylindrical connecting block and the other insertion hole in sequence, so that the limiting sleeve can be smoothly pushed to move horizontally along the pin. In use, the cam and the limiting sleeve are manually pushed to the left along the pin to move to the left until the side wall of the cylindrical connecting block contacts the inner wall of the limiting sleeve. At this time, the first spring is compressed under the action of the inner wall of the cam and the limiting mounting groove. Continue to rotate the cam so that the outer right edge of the cam contacts the side of the workpiece. Finally, release the cam. Under the elastic force of the first spring, the cam generates a pressure on the inner right wall of the cam, thereby realizing the clamping of the cam workpiece.

[0038] Furthermore, the outer wall of the aforementioned cylindrical connecting block is fitted with an elastic limiting member, which is located at the top of the cam and the limiting sleeve;

[0039] The elastic limiting component includes a second spring and a washer respectively sleeved on the outer wall of the cylindrical connecting block. The washer is located at the top of the cam and the limiting sleeve, and the second spring is located between the bottom wall of the connecting part and the washer.

[0040] The bottom of the support block is provided with an annular limiting groove along the direction of the cylindrical connecting block, and the end of the second spring away from the washer extends into the annular limiting groove.

[0041] The gasket of the elastic limiting member of the present invention is used to ensure that the cam will not slip upward from the limiting sleeve, thus ensuring the relative positional relationship between the cam and the limiting sleeve.

[0042] Furthermore, the bottom of the cam is provided with multiple positioning grooves, and the side wall of the base is provided with a T-shaped sliding groove;

[0043] The sliding mechanism includes a T-shaped slider that mates with the T-shaped slide groove, a fixed block connected to the end of the T-shaped slider, an elastic positioning element connected to the T-shaped slider and in rolling contact with the positioning groove, and an axial fastening screw that axially passes through the fixed block and the T-shaped slider. The axial fastening screw passes through the fixed block and the T-shaped slider in sequence and abuts against the inner wall of the T-shaped slide groove. The axial fastening screw located outside the fixed block is connected to a handle. The fixed block is connected to the bottom of the cylindrical connecting block by a connecting screw.

[0044] In this invention, the positioning groove at the bottom of the cam contacts and positions itself with the elastic positioning element. When the cam is rotated, the elastic positioning element rolls into the next positioning groove under the action of the second spring, allowing the positioning groove at the bottom of the cam to move upward a small distance in conjunction with the external positioning ball. The T-shaped slider of the sliding mechanism slides in conjunction with the T-shaped groove on the base. Rotating the handle of the axial fastening screw causes the axial fastening screw to abut against the inner wall of the T-shaped groove, thereby achieving the purpose of fixing the sliding mechanism as a whole.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The tooling for corner piece riveting of the present invention has a sliding mechanism that slides with the base, which can change the position of the entire stringer clamping device by sliding, while also fixing it on the base; the workpiece is installed on the base and the reference surface of the workpiece is in close contact with the base plate. The workpiece is a T-shaped stringer. The present invention achieves bidirectional clamping of the workpiece through a vertical clamping mechanism and a cam clamping mechanism. It is simple to operate and does not require repeated disassembly. It only requires rotating the cam clamping mechanism and the rotation limiting mechanism. It is also applicable to stringers of different sizes, thus facilitating corner piece riveting.

[0047] 2. In the rotary limiting mechanism of the present invention, the reference block is used to install the vertical clamping mechanism. A six-bar linkage is formed by the combination of the support plate, connecting rod one, connecting rod two, reference block, limiting rod and push rod. By driving the push rod to rotate around the support plate, the limiting rod, connecting rod two, connecting rod one and the reference block are driven to rotate in sequence. The limiting rod locks the connecting rod two, thereby restricting the rotation of connecting rod two, connecting rod one, reference block and the limiting rod and push rod. By rotating the push rod, the clamping and loosening of the T-shaped stringer by the vertical clamping mechanism can be realized. The operation is simple, convenient and time-saving.

[0048] 3. The cam of the present invention, in conjunction with the limiting sleeve, cylindrical connecting block and lateral pressure component, can achieve lateral clamping of T-shaped stringers of different sizes simply by rotating and pulling the cam. It can quickly clamp and limit, is simple and convenient to operate, and has strong versatility.

[0049] 4. The vertical clamping mechanism of this invention is simple to operate, highly versatile, and its rigid connection is not easily loosened. It also effectively solves the shortcomings of traditional corner piece riveting fixtures, such as complex operation and easy loosening of the vertical clamping device. Furthermore, the high-frequency vibration generated during operation of the corner pieces riveted on the T-shaped stringer will not cause the limiting component to loosen, and the limiting component's limiting and fixing structure for the sliding clamping component is stable and reliable.

[0050] 5. The limiting block of the present invention, together with the fixing cover and the spring, can limit the sliding rod by pulling or releasing the pull ring during use, thereby realizing the vertical pressing of the sliding clamping part on T-shaped stringers of different sizes, which is convenient to operate. Attached Figure Description

[0051] Figure 1 A schematic diagram of the structure for fixing the frame in a large-diameter thin-walled cylindrical riveting component;

[0052] Figure 2 A cross-sectional view of a traditional corner piece assembly fixture;

[0053] Figure 3 A schematic diagram of the overall structure of the tooling used for riveting corner pieces;

[0054] Figure 4 for Figure 3 A magnified structural diagram of part A;

[0055] Figure 5 A side view of the structure when the stringer clamping device clamps the T-shaped stringer;

[0056] Figure 6 A schematic diagram of the overall structure of the stringer clamping device;

[0057] Figure 7 This is a schematic diagram of the structure when the stringer clamping device is clamping.

[0058] Figure 8 A schematic diagram of the structure when the stringer clamping device is released;

[0059] Figure 9 This is a schematic diagram of the sliding mechanism;

[0060] Figure 10 This is a cross-sectional view of the sliding mechanism.

[0061] Figure 11 This is a schematic diagram of the overall structure of the rotary limiting mechanism;

[0062] Figure 12 This is a side view of the rotating limiting mechanism.

[0063] Figure 13 This is a schematic diagram of the limit rod structure;

[0064] Figure 14 This is a schematic diagram of the structure when the limiting nose contacts the second connecting rod;

[0065] Figure 15 This is a schematic diagram of the structure when the push rod is rotated to the vertical position.

[0066] Figure 16 A schematic diagram of the structure after the push rod rotates and passes through the vertical direction;

[0067] Figure 17 This is a schematic diagram of the rotary limiting mechanism in the vertical relaxed state.

[0068] Figure 18 This is a schematic diagram of the overall structure of the cam clamping mechanism;

[0069] Figure 19 An exploded view of the cam clamping mechanism;

[0070] Figure 20 This is a partial cross-sectional view of the cam clamping mechanism.

[0071] Figure 21 This is a schematic diagram of the limiting sleeve.

[0072] Figure 22 This is a schematic diagram of the overall structure of the vertical clamping mechanism;

[0073] Figure 23 This is a cross-sectional view of the vertical clamping mechanism.

[0074] Figure 24 This is a schematic diagram of the slide cylinder structure.

[0075] In the diagram: 1-Base, 11-T-slide groove, 2-Leg, 3-Workpiece, 4-Base plate, 5-Sliding mechanism, 51-T-slider, 52-Fixing block, 53-Elastic positioning element, 54-Axial fastening screw, 55-Handle, 56-Connecting screw, 6-Cam clamping mechanism, 61-Cylindrical connecting block, 611-Limit mounting groove, 612-Connecting hole, 62-Limiting sleeve, 63-Side pressure element, 631-Pin, 632-First spring, 64-Cam, 641-Positioning groove, 65-Elastic limiting element, 651-Second spring, 652-Washer, 7-Rotation limiting mechanism, 71-Support block, 711-Annular limiting groove, 72-Base block, 721-Base block one, 722-Base block two, 72 3-Connecting plate, 7231-Through groove, 724-Support lug, 725-Hinge seat, 73-Support plate, 74-Link 1, 75-Link 2, 76-Push rod, 77-Limiting rod, 771-Rotating shaft A, 772-Rotating shaft B, 773-Rotating shaft C, 774-Limiting nose, 78-Limiting block, 8-Vertical pressing mechanism, 81-Slide cylinder, 811-Limiting ring, 812-Annular clamping cavity, 813-First connecting section, 814-Second connecting section, 815-Fixing sleeve, 82-Locking component, 83-Sliding pressing component, 831-Pressure plate, 832-Slide rod, 833-Notch, 84-Limiting component, 841-Fixing cover, 842-Pin, 843-Limiting block, 844-Spring, 845-Pull ring. Detailed Implementation

[0076] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0077] like Figures 3 to 8As shown, the present invention provides a tooling for riveting corner pieces, comprising: a base 1, a plurality of legs 2 connected to the bottom of the base 1, and a stringer clamping device slidably connected to the base 1. The end of the base 1 is connected to a base plate 4 for limiting the position of the end of the workpiece 3. The legs 2 are spaced apart and connected to the bottom of the base 1 and are used to provide stable support for the base 1. In this embodiment, the legs 2 have an A-shaped structure. In other embodiments of the present invention, the legs 2 can be columnar structures, rectangular structures, etc., as long as they can support the base 1. The base 1 has a mounting groove for mounting the workpiece 3. The workpiece 3 adopts an existing T-shaped stringer. The stringer clamping device includes a sliding mechanism 5 that slides with the base 1, a cam clamping mechanism 6 connected to the top of the sliding mechanism 5, a rotation limiting mechanism 7 connected to the cam clamping mechanism 6, and a vertical clamping mechanism 8 set on the rotation limiting mechanism 7. The workpiece 3 is placed along the length of the base 1 and its end position is limited by the base plate 4. The cam clamping mechanism 6 clamps the workpiece 3 laterally, and the rotation limiting mechanism 7 drives the vertical clamping mechanism 8 to clamp the workpiece 3 vertically. The workpiece 3 is placed in the mounting groove of the base 1. The cam clamping mechanism 6 is used to clamp the workpiece 3 against the side wall of the mounting groove, thereby clamping the workpiece 3 laterally. The rotation limiting mechanism 7 drives the vertical clamping mechanism 8 to clamp the workpiece 3 vertically and press it against the bottom wall of the mounting groove. The cam clamping mechanism 6 and the vertical clamping mechanism 8 realize bidirectional clamping of the workpiece 3.

[0078] The sliding mechanism 5 slides with the base 1, allowing the position of the entire stringer clamping device to be changed by sliding, while also being fixed to the base 1. The workpiece 3 is mounted on the base 1, with its reference surface in close contact with the base plate 4. The base plate 4 is bolted to one end of the base 1, and the base 1 has length markings that extend from one end of the base plate 4 along the other end of the base 1. Rotating and pulling the cam clamping mechanism 6 causes it to clamp the side of the workpiece 3. Rotating the rotation limiting mechanism 7 causes the vertical clamping mechanism 8 to rotate. When the vertical clamping mechanism 8 clamps the workpiece 3 vertically, the rotation limiting mechanism 7 automatically locks. Reversing the rotation limiting mechanism 7 causes the vertical clamping mechanism 8 to loosen its grip on the workpiece 3. The vertical clamping mechanism 8 and the cam clamping mechanism 6 achieve bidirectional clamping of the workpiece 3, resulting in a reliable structure and simple operation.

[0079] like Figure 6 , Figures 11 to 17As shown, the system includes a support block 71, a reference block 72 rotatably connected to the top of the support block 71, a support plate 73 connected to the support block 71, a first connecting rod 74 rotatably engaged with the end of the reference block 72 away from the support block 71, a second connecting rod 75 rotatably engaged with the first connecting rod 74, and a push rod 76 rotatably connected to the support plate 73. The reference block 72 is used to install the vertical clamping mechanism 8. Specifically, the reference block 72 includes a base block 1 721, a base block 2 722, and a connecting plate 723 connected between the base block 1 721 and the base block 2 722. The connecting plate 723 is integrated with the base block 1 721 and the base block 2 722. A through groove 7231 is provided on the connecting plate 723. An installation cavity for installing the vertical clamping mechanism 8 is formed between the base block 1 721, the base block 2 722, and the connecting plate 723. The side wall of the base block 1 721 away from the connecting plate 723 is provided with a lug 724 that rotates with the top of the support block 71. The side wall of the base block 2 722 away from the base block 1 721 is provided with a hinge seat 725 that rotates with the connecting rod 1 74.

[0080] The end of connecting rod 75 furthest from connecting rod 74 is rotatably connected to the top of support plate 73. A limiting rod 77 is rotatably connected between connecting rod 75 and push rod 76. The limiting rod 77 has a limiting nose 774 that cooperates with connecting rod 75. When push rod 76 rotates, it sequentially drives the limiting rod 77, connecting rod 75, connecting rod 74, and reference block 72 to rotate in tandem. The limiting rod 77 locks and releases connecting rod 75. A six-bar linkage is formed by the support plate 73, connecting rod 74, connecting rod 75, reference block 72, limiting rod 77, and push rod 76. By driving push rod 76 to rotate around support plate 73, it sequentially drives the limiting rod 77, connecting rod 75, connecting rod 74, and reference block 72 to rotate in tandem, thereby adjusting the position of the vertical pressing mechanism 8 on reference block 72. Rotating push rod 76 allows for the pressing and releasing of the T-shaped stringers, making operation simple, convenient, and time-saving.

[0081] To save space and facilitate smooth rotation between the limiting rod 77, push rod 76, and connecting rod 75, both connecting rod 75 and push rod 76 have rotating cavities for the limiting rod 77 and support plate 73 to rotate. To ensure smooth rotation around support plate 73, the lengths of the rotating cavities of both connecting rod 75 and push rod 76 are greater than the width of support plate 73. The end of connecting rod 75 furthest from connecting rod 74 passes through the rotating cavity of push rod 76 and is rotatably connected to the top of support plate 73. In this embodiment, the limiting nose 774 and limiting rod 77 are integrated into a single structure, and the limiting nose 774 and limiting rod 77 are located on the same plane.

[0082] In this embodiment, the lug 724 in the reference block 72 rotates with the top of the support block 71 via a hinge; the first connecting rod 74 rotates with the hinge seat 725 in the reference block 72 via a hinge; the second connecting rod 75 rotates with the first connecting rod 74 via a hinge; the second connecting rod 75 rotates with the top of the support plate 73 via a hinge; the push rod 76 rotates with the support plate 73 via a hinge; and the two ends of the limiting rod 77 rotate with the push rod 76 and the second connecting rod 75 via hinges, respectively. In other embodiments of the present invention, the above-mentioned rotating connections can also be achieved by a shaft-hole fit, which is not specifically limited here.

[0083] The support plate 73 has symmetrically arranged limiting blocks 78 on both sides to limit the rotational position of the push rod 76. In this embodiment, the limiting blocks 78 are inclinedly arranged on both sides of the support plate 73. When the push rod 76 is rotated clockwise, when the push rod 76 rotates to contact the limiting block 78, the reference block 72 is in a vertical state, and the limiting block 78 is used to limit the rotational position of the push rod 76.

[0084] In this invention, when the push rod 76 rotates, it sequentially drives the limiting rod 77, connecting rod two 75, connecting rod one 74, and reference block 72 to rotate in a coordinated manner. The limiting rod 77 locks and releases connecting rod two 75. The specific method for locking and releasing connecting rod two 75 is as follows:

[0085] There is a pivot A771 between the second connecting rod 75 and the limiting rod 77, a pivot B772 between the limiting rod 77 and the push rod 76, and a pivot C773 between the push rod 76 and the support plate 73.

[0086] When the push rod 76 is rotated to the point where the limiting nose 774 contacts the second connecting rod 75, the sum of the distances between the rotating shaft A771 and the rotating shafts B772 and C773 is greater than the distance between the rotating shafts B772 and C773. When the limiting nose 774 contacts the second connecting rod 75, the push rod 76 is close to the vertical direction, and the reference block 72 is in a horizontal state. The sum of the distances between the rotating shafts A771 and the rotating shafts B772 and C773 is greater than the distance between the rotating shafts B772 and C773. The limiting rod 77 does not lock the second connecting rod 75, and at the same time, the vertical pressing mechanism 8 on the reference block 72 vertically presses the T-shaped stringer.

[0087] Drive the push rod 76 to continue rotating, so that the push rod 76 is in the vertical direction. Under the action of elastic deformation, the sum of the distances between the rotating shaft A771 and the rotating shafts B772 and C773 is equal to the distance between the rotating shafts B772 and C773. And the rotating shafts A771, B772 and C773 are all on the same straight line. At this time, the connecting rod 75, the connecting rod 74 and the reference block 72 do not rotate.

[0088] The push rod 76 is further driven to continue rotating. Under the action of elastic deformation, it continues to rotate and passes through the vertical direction. The limiting nose 774 locks the connecting rod 75 under the action of elastic deformation. When the push rod 76 passes through the vertical direction, the elastically deformed part rebounds, causing the push rod 76 to lock the connecting rod 75, thereby locking the entire mechanism. The entire locking process is simple and reliable.

[0089] In this embodiment, the push rod 76 can rotate clockwise and counterclockwise. The direction of rotation is shown in the attached figure and is not specifically limited here. The direction of rotation of the push rod 76 depends on the actual use and installation position.

[0090] like Figures 22 to 24 As shown, the vertical clamping mechanism 8 includes a slide cylinder 81, a locking member 82 threadedly connected to the top outer wall of the slide cylinder 81, a sliding clamping member 83 that slides in cooperation with the inner wall of the slide cylinder 81, and a limiting member 84 disposed on the slide cylinder 81 to limit the sliding position of the sliding clamping member 83; the sliding clamping member 83 slides along the slide cylinder 81 and adjusts its position. When the sliding clamping member 83 slides to contact and clamp with the T-shaped stringer, the limiting member 84 is inserted to fix the sliding clamping member 83. The limiting member 84 provides a stable and reliable limiting and fixing structure for the sliding clamping member 83.

[0091] A limiting ring 811 is annularly connected to the outer wall of the slide cylinder 81. The top of the slide cylinder 81 passes through the through groove 7231 and is locked by the locking member 82. The slide cylinder 81 includes a first connecting section 813 and a second connecting section 814 connected sequentially from top to bottom. The locking member 82 is threadedly connected to the top outer wall of the first connecting section 813 and is a fastening nut. The limiting ring 811 is located at the connection position between the first connecting section 813 and the second connecting section 814. The outer wall of the first connecting section 813 is provided with an outer... The inner wall of the fastening nut is provided with an internal thread that matches the external thread of the outer wall of the first connecting section 813, thereby realizing a threaded connection. An annular clamping cavity 812 is formed between the limiting ring 811 and the locking member 82. The annular clamping cavity 812 matches the size of the connecting plate 723. The first connecting section 813 passes through the through groove 7231 and is locked by the fastening nut, and the size of the fastening nut is larger than the groove diameter of the through groove 7231, so that the fastening nut, in conjunction with the limiting ring 811, is fixed on the connecting plate 723. In this embodiment, a first shaft hole is opened in the first connecting section 813, and a second shaft hole communicating with the first shaft hole is opened in the second connecting section 814. The diameter of the first shaft hole is smaller than the diameter of the second shaft hole, and the outer diameter of the first connecting section 813 is smaller than the outer diameter of the second connecting section 814.

[0092] The sliding clamping member 83 includes a clamping plate 831 and a sliding rod 832 connected to the top of the clamping plate 831 and slidingly engaged with the inner wall of the sliding cylinder 81. The bottom of the sliding rod 832 is integrally connected to the top of the clamping plate 831. The outer wall of the sliding rod 832 has multiple notches 833 axially formed. The limiting member 84 passes through the sliding cylinder 81 and is inserted into the notches 833. Specifically, the sliding rod 832 is slidably engaged with the inner wall of the second connecting section 814. The outer diameter of the sliding rod 832 is adapted to the diameter of the second shaft hole. Since the diameter of the first shaft hole is smaller than the diameter of the second shaft hole, the upward sliding position of the sliding rod 832 can be restricted through the first shaft hole.

[0093] The second connecting section 814 has a sidewall connected to a fixing sleeve 815. A limiting member 84 passes through the fixing sleeve 815 and is inserted into a notch 833. The limiting member 84 includes a fixing cover 841 and a pin 842. The fixing cover 841 is threadedly connected to the fixing sleeve 815. The inner wall of the fixing cover 841 has an internal thread, and the outer wall of the fixing sleeve 815 has an external thread that mates with the internal thread of the inner wall of the fixing cover 841. The pin 842 passes through the fixing cover 841, the fixing sleeve 815, and the second connecting section 814 in sequence and is inserted into the notch 833. The fixing cover 841 has a first through hole to facilitate the passage of the pin 842, and the sidewall of the second connecting section 814 has a second through hole that communicates with the fixing sleeve 815. The diameters of the first and second through holes are adapted to the outer diameter of the pin 842. A limiting block 843 is provided on the outer wall of the pin 842 located inside the fixed sleeve 815, and a spring 844 is sleeved on the outer wall of the pin 842. The spring 844 is located between the limiting block 843 and the fixed cover 841. The elastic force of the spring 844 drives the pin 842 to pass through the second through hole of the second connecting section 814 and insert into the notch 833 of the slide rod 832, thereby limiting the slide rod 832.

[0094] A third shaft hole is provided inside the fixed sleeve 815. The rod diameter of the pin 842 is smaller than the diameter of the third shaft hole, and the size of the limiting block 843 is adapted to the diameter of the third shaft hole. This allows the limiting block 843 to restrict the movement of the pin 842 when it is pulled or released. At the same time, the limiting block 843, together with the fixed cover 841 and the spring 844, can realize the automatic reset of the pin 842, making operation convenient.

[0095] To facilitate the pulling of the pin 842, a pull ring 845 is movably connected to the end of the pin 842 located outside the fixed sleeve 815. Specifically, the end of the pin 842 located outside the fixed sleeve 815 is provided with a shaft hole that matches the pull ring 845, thereby facilitating the movement of the pull ring 845.

[0096] When the vertical clamping mechanism 8 is in use, the limiting ring 811 and locking member 82 on the slide cylinder 81 are connected and locked to the connecting plate 723. Pulling the pull ring 845 outward pulls the pin 842 into the third shaft hole of the fixed sleeve 815. At this time, the sliding rod 832 of the sliding clamping member 83 is driven to slide along the slide cylinder 81, and the distance between the clamping plate 831 and the T-shaped stringer is adjusted until the clamping plate 831 contacts and clamps the top of the T-shaped stringer. Then, the pull ring 845 is released, and the pin 842 is clamped by the spring. Under the elastic force of 844, it is driven to reset. The pin 842 passes through the side wall of the second connecting section 814 of the fixed sleeve 815 and the slide cylinder 81 and is inserted into the notch 833 of the slide rod 832, thereby limiting and fixing the slide rod 832, thus limiting and fixing the sliding clamping member 83, and realizing the vertical clamping of the T-shaped stringer. The sliding clamping member 83 can be adjusted by pulling the limiting member 84 outward, and the sliding clamping member 83 can be limited and fixed by loosening the limiting member 84.

[0097] like Figures 18 to 21 As shown, the cam clamping mechanism 6 includes a cylindrical connecting block 61, a limiting sleeve 62, a lateral pressure member 63, and a cam 64. The cylindrical connecting block 61 is connected to the bottom of the support block 71 and extends into the limiting sleeve 62. The lateral pressure member 63 passes radially through the limiting sleeve 62 and the cylindrical connecting block 61, and the inner diameter of the limiting sleeve 62 is larger than the outer diameter of the cylindrical connecting block 61. The cam 64 is rotatably fitted on the outer side of the limiting sleeve 62, and both ends of the lateral pressure member 63 contact the inner wall of the cam 64 respectively. Since the inner diameter of the limiting sleeve 62 is larger than the outer diameter of the cylindrical connecting block 61, there is a certain gap between the outer wall of the cylindrical connecting block 61 and the inner wall of the limiting sleeve 62.

[0098] The cam 64 and the limiting sleeve 62 move axially along the lateral pressure member 63, and the cam 64 rotates around the limiting sleeve 62, so that the outer edge of the cam 64 contacts the side of the workpiece 3. The lateral pressure member 63 causes the cam 64 to press the workpiece 3 against the workpiece. By using the lateral pressure member 63 in conjunction with the cam 64, the limiting sleeve 62, and the cylindrical connecting block 61, T-shaped stringers of different sizes can be limited and pressed. At the same time, T-shaped stringers of different sizes can be pressed by simply rotating and pulling the cam 64. The T-shaped stringer can be quickly adjusted and limited, and the operation is simple and convenient.

[0099] The limiting sleeve 62 has an inverted T-shaped cross-section, and the shaft hole of the cam 64 matches the size of the limiting sleeve 62. The limiting sleeve 62 uses an inverted T-shaped structure to limit the downward movement of the cam 64.

[0100] The lateral pressure component 63 includes a pin 631 and a first spring 632. The pin 631 radially passes through the limiting sleeve 62 and the cylindrical connecting block 61. The first spring 632 is sleeved on one end of the pin 631, and its two ends contact the side wall of the cylindrical connecting block 61 and the inner wall of the cam 64, respectively. The first spring 632 causes the cam 64 to press the workpiece 3 against the workpiece. The cylindrical connecting block 61 has a through hole matching the size of the pin 631, and the side wall of the limiting sleeve 62 has... Two symmetrical insertion holes are provided. A pin 631 is sequentially inserted into one insertion hole of the limiting sleeve 62, the through hole of the cylindrical connecting block 61, and the other insertion hole of the limiting sleeve 62. The diameter of the through hole on the cylindrical connecting block 61 matches the diameter of the pin 631. The diameter of the insertion hole on the right side of the limiting sleeve 62 matches the diameter of the pin 631, while the diameter of the insertion hole on the left side of the limiting sleeve 62 is larger than the diameter of the pin 631, to facilitate the passage of the first spring 632. The first spring 632 passes through one of the insertion holes, and its two ends contact the side wall of the cylindrical connecting block 61 and the inner wall of the cam 64, respectively. Specifically, the side wall of the cylindrical connecting block 61 has a limiting mounting groove 611 that communicates with the through hole and is used to limit the position of the first spring 632. Under the action of the inner wall of the cam 64 and the limiting mounting groove 611, when the cam 64 is pushed to the right, the first spring 632 is compressed, generating pressure on the cam 64 to the left.

[0101] An elastic limiting member 65 is fitted onto the outer wall of the cylindrical connecting block 61. The elastic limiting member 65 is located at the top of the cam 64 and the limiting sleeve 62. Under the action of the elastic limiting member 65 and the inverted T-shaped limiting sleeve 62, the vertical movement of the cam 64 can be restricted, accurately preventing the cam 64 from slipping off during use. The elastic limiting member 65 includes a second spring 651 and a washer 652 respectively fitted onto the outer wall of the cylindrical connecting block 61. The washer 652 is located at the top of the cam 64 and the limiting sleeve 62, and the second spring 651 is located between the bottom wall of the support block 71 and the washer 652. The washer 652 is used to ensure that the cam 64 will not slip upward from the limiting sleeve 62, ensuring the relative positional relationship between the cam 64 and the limiting sleeve 62. Multiple positioning grooves 641 are opened at the bottom of the cam 64, and the positioning grooves 641 contact and position with the elastic positioning member 53 in the sliding mechanism 5. Multiple positioning grooves 641 at the bottom of the cam 64 correspond to multiple limiting dimensions. Since the cam 64 itself has an irregular structure, it can be positioned when in contact with the external top ball bearing, thus facilitating the clamping of T-shaped stringers of different sizes. In this embodiment, three positioning grooves 641 are provided and distributed circumferentially along the shaft hole of the cam 64. In other embodiments of the invention, the number of positioning grooves 641 can be two, four, five, six, etc., depending on the actual use, and no specific limitation is made here. The positioning grooves 641 at the bottom of the cam 64 contact and position with the elastic positioning member 53. When the cam 64 is rotated, the elastic positioning member 53 can roll into the next positioning groove 641 under the action of the second spring 651, allowing the positioning grooves 641 at the bottom of the cam 64 to move upward a small distance in coordination with the elastic positioning member 53.

[0102] In order to better limit the second spring 651, the bottom of the support block 71 is provided with an annular limiting groove 711 along the direction of the cylindrical connecting block 61, and the end of the second spring 651 away from the pad 652 extends into the annular limiting groove 711.

[0103] like Figure 9 and Figure 10As shown, the base 1 has a T-shaped groove 11 on its side wall; the sliding mechanism 5 includes a T-shaped slider 51 that cooperates with the T-shaped groove 11, a fixing block 52 connected to the end of the T-shaped slider 51, an elastic positioning element 53 connected to the T-shaped slider 51 and rollingly contacting the positioning groove 641, and an axial fastening screw 54 that axially passes through the fixing block 52 and the T-shaped slider 51. The axial fastening screw 54 passes through the fixing block 52 and the T-shaped slider 51 in sequence and abuts against the inner wall of the T-shaped groove 11. The fixing block 52 and the end of the T-shaped slider 51 are connected in an integral structure, and the fixing block 52 is located outside the T-shaped groove 11. The fixing block 52 and the T-shaped slider 51 have corresponding threaded through holes, which are threadedly connected to the axial fastening screw 54. Therefore, the axial fastening screw 54 can pass through the fixing block 52 and the T-shaped slider 51. An axial fastening screw 54 located outside the fixing block 52 is connected to a handle 55, which facilitates the rotation of the axial fastening screw 54. The fixing block 52 is connected to the bottom of the cylindrical connecting block 61 via a connecting screw 56. The bottom of the cylindrical connecting block 61 has a threaded connection hole 612 that matches the connecting screw 56. The fixing block 52 also has a threaded hole corresponding to the threaded connection hole 612. The connecting screw 56 is threadedly connected to the threaded connection hole 612 and the threaded hole on the fixing block 52, thereby connecting and fixing the fixing block 52 to the cylindrical connecting block 61. In this embodiment, the elastic positioning element 53 adopts an existing ball spring. The T-shaped slider 51 of the sliding mechanism 5 slides in cooperation with the T-shaped groove 11 on the base 1. By rotating the handle 55 of the axial fastening screw 54, the axial fastening screw 54 is pressed against the inner wall of the T-shaped groove 11, thereby pressing the sliding mechanism 5 against the base 1, achieving the purpose of fixing the stringer clamping device as a whole.

[0104] The method of using a tooling for riveting corner pieces according to the present invention includes the following specific steps:

[0105] (1) Finish one end of workpiece 3 to ensure that there is a plane that is perpendicular to the axis of workpiece 3 and has a high degree of flatness;

[0106] The aforementioned workpiece 3 is a T-shaped stringer.

[0107] (2) Based on the height of the workpiece 3, rotate the rotation limiting mechanism 7 and adjust the position of the sliding clamping part 83 in the vertical clamping mechanism 8 so that the bottom of the sliding clamping part 83 contacts the workpiece 3.

[0108] The above steps are used to initially confirm the pressing position of the vertical pressing mechanism 8 on the T-shaped stringer. Pulling the pull ring 845 can drive the pin 842 to move outward. When the pressing plate 831 in the sliding pressing member 83 moves to the position corresponding to the height of the workpiece 3, the pull ring 845 is released, and the pin 842 is reset under the action of the spring 844, so that the pin 842 is inserted into the notch 833 of the slide bar 832, thereby limiting the sliding pressing member 83, so that the vertical pressing mechanism 8 can be vertically pressed on the T-shaped stringer by rotating the rotation limiting mechanism 7.

[0109] (3) The clamping device is assembled on the base 1, and the processed workpiece 3 is placed on the base 1, with the reference surface of the workpiece 3 in close contact with the substrate 4.

[0110] (4) Rotate the cam 64 and make the outer edge of the cam 64 contact the side of the workpiece 3. At this time, pull the cam 64 away from the workpiece 3. The cam 64 and the limiting sleeve 62 move axially along the lateral pressure member 63. Finally, rotate the cam 64 and make the outer edge of the cam 64 contact the side of the workpiece 3. Then release the cam 64 and press the outer edge of the cam 64 against the workpiece 3 through the lateral pressure member 63.

[0111] In the above steps: manually push the cam 64 to the right to move horizontally along the pin 631 in the lateral pressure member 63. At this time, under the action of the inner wall of the cam 64 and the limiting mounting groove 611, the first spring 632 is compressed. Do not release the hand at this time, continue to drive the cam 64 to rotate around the limiting sleeve 62. When the outer edge of the cam 64 contacts the T-shaped stringer, release the cam 64. Under the pressure of the first spring 632, the cam 64 will generate pressure, so the cam 64 can press the T-shaped stringer.

[0112] (5) The handle 55 in the rotating sliding mechanism 5 causes the T-shaped slider 51 to slide along the T-shaped groove 11 of the base 1, and the planes at both ends of the reference block 72 are used as the riveting planes of the corner piece and the middle frame. According to the installation position of the middle frame, the sliding mechanism 5 is driven to slide along the base 1.

[0113] The base 1 has a length scale from one end of the substrate 4 to the other end of the base 1. The plane in contact between the substrate 4 and the base 1 is the zero point. The sliding mechanism 5 slides along the base 1 to adjust the distance between the stringer clamping device and the zero point of the substrate 4.

[0114] (6) Rotate push rod 76. When push rod 76 rotates, it drives limit rod 77, connecting rod 2 75, connecting rod 1 74 and reference block 72 to rotate in sequence. The limit nose 774 of limit rod 77 locks and releases connecting rod 2 75, thereby making the sliding pressing part 83 in vertical pressing mechanism 8 vertically press the top of workpiece 3.

[0115] (7) Install the corner pieces according to the design position. The two mutually perpendicular planes of the corner pieces contact the side of the workpiece 3 and the side of the reference block 72 respectively, and use an external G-type clamp to fix the corner pieces on the reference block 72.

[0116] (8) After the corner piece position is determined, the riveting hole is machined on the workpiece 3 according to the rivet hole of the corner piece, and then the corner piece is riveted to the workpiece 3.

[0117] (9) After each corner piece on a workpiece 3 is riveted, rotate the push rod 76 and make the reference block 72 vertical, take out the workpiece 3, and put in the same workpiece 3 to repeat the above steps (3) to (8).

[0118] The above operation can rivet the corner pieces of the same batch of workpieces 3. If it is necessary to replace the T-shaped stringers of different sizes, the operation of steps (2) to (8) can be performed. The operation is simple and convenient, and there is no need to disassemble repeatedly. Just rotate the cam pressing mechanism 6 and the rotating limiting mechanism 7. At the same time, it can also press the stringers of different sizes, which makes it easy to assemble the corner pieces for riveting and positioning.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tooling for riveting corner pieces, characterized in that, include: The base (1), a plurality of legs (2) connected to the bottom of the base (1) and a stringer clamping device slidably connected to the base (1), wherein the end of the base (1) is connected to a base plate (4) for limiting the end position of the workpiece (3). The stringer clamping device includes a sliding mechanism (5) that slides with the base (1), a cam clamping mechanism (6) connected to the top of the sliding mechanism (5), a rotation limiting mechanism (7) connected to the cam clamping mechanism (6), and a vertical clamping mechanism (8) provided on the rotation limiting mechanism (7). The workpiece (3) is placed along the length of the base (1) and its end position is restricted by the base plate (4). The cam pressing mechanism (6) presses the workpiece (3) laterally, and the rotation limiting mechanism (7) drives the vertical pressing mechanism (8) to press the workpiece (3) vertically. The rotation limiting mechanism (7) includes a support block (71), a reference block (72) rotatably connected to the top of the support block (71), a support plate (73) connected to the support block (71), a first connecting rod (74) rotatably engaged with the end of the reference block (72) away from the support block (71), a second connecting rod (75) rotatably engaged with the first connecting rod (74), and a push rod (76) rotatably connected to the support plate (73). The end of the second connecting rod (75) away from the first connecting rod (74) is rotatably connected to the top of the support plate (73). A limiting rod (77) is rotatably connected between the second connecting rod (75) and the push rod (76). The limiting rod (77) is provided with a limiting nose (774) that engages with the second connecting rod (75). The vertical pressing mechanism (8) is disposed on the reference block (72). When the push rod (76) rotates, it drives the limiting rod (77), connecting rod two (75), connecting rod one (74), reference block (72) and vertical pressing mechanism (8) to rotate in sequence. When the limiting rod (77) locks or releases the connecting rod two (75), the vertical pressing mechanism (8) vertically presses or releases the workpiece (3).

2. The tooling for riveting corner pieces according to claim 1, characterized in that, The reference block (72) includes a base block one (721), a base block two (722), and a connecting plate (723) connecting the base block one (721) and the base block two (722). A through groove (7231) is provided on the connecting plate (723). A mounting cavity for installing the vertical clamping mechanism (8) is formed between the base block one (721), the base block two (722), and the connecting plate (723). The base block one (721) has a lug (724) on its side wall away from the connecting plate (723) that rotates with the top of the support block (71), and the base block two (722) has a hinge seat (725) on its side wall away from the base block one (721) that rotates with the connecting rod one (74). The support plate (73) is provided with limiting blocks (78) on both sides to limit the rotational position of the push rod (76).

3. The tooling for riveting corner pieces according to claim 1, characterized in that, The second connecting rod (75) has a pivot A (771) between it and the limiting rod (77), the limiting rod (77) has a pivot B (772) between it and the push rod (76), and the push rod (76) has a pivot C (773) between it and the support plate (73). When the push rod (76) rotates to the point where the limiting nose (774) contacts the connecting rod two (75), the sum of the distances between the rotating shaft A (771) and the rotating shafts B (772) and C (773) is greater than the distance between the rotating shafts B (772) and C (773); The push rod (76) continues to rotate, so that the push rod (76) is in the vertical direction. Under the action of elastic deformation, the sum of the distances between the rotating shaft A (771) and the rotating shafts B (772) and C (773) is equal to the distance between the rotating shafts B (772) and C (773), and the rotating shafts A (771), B (772) and C (773) are all located on the same straight line; The push rod (76) continues to rotate, and under the action of elastic deformation, it continues to rotate and passes through the vertical direction. Then, the limiting nose (774) locks the connecting rod (75) under the action of elastic deformation.

4. The tooling for riveting corner pieces according to claim 2, characterized in that, The vertical clamping mechanism (8) includes a slide cylinder (81), a locking member (82) threaded to the top outer wall of the slide cylinder (81), a sliding clamping member (83) slidingly engaged with the inner wall of the slide cylinder (81), and a limiting member (84) disposed on the slide cylinder (81) and used to limit the sliding position of the sliding clamping member (83). The outer wall of the slide cylinder (81) is connected to a limiting ring (811) in annular shape. The top of the slide cylinder (81) passes through the through groove (7231) and is locked by the locking member (82). The sliding clamping member (83) includes a clamping plate (831) and a sliding rod (832) connected to the top of the clamping plate (831) and slidingly engaged with the inner wall of the sliding cylinder (81). The outer wall of the sliding rod (832) has a plurality of notches (833) axially formed. The limiting member (84) passes through the sliding cylinder (81) and is inserted into the notches (833).

5. The tooling for riveting corner pieces according to claim 4, characterized in that, The slide cylinder (81) includes a first connecting section (813) and a second connecting section (814) connected sequentially from top to bottom. The locking member (82) is threadedly connected to the top outer wall of the first connecting section (813). The limiting ring (811) is located at the connection position between the first connecting section (813) and the second connecting section (814). The slide rod (832) is slidably engaged with the inner wall of the second connecting section (814). The side wall of the second connecting section (814) is connected to a fixed sleeve (815). The limiting member (84) includes a fixed cover (841) and a pin (842). The fixed cover (841) is threadedly connected to the fixed sleeve (815). The pin (842) passes through the fixed cover (841), the fixed sleeve (815), and the second connecting section (814) in sequence and is inserted into the notch (833). A limiting block (843) is provided on the outer wall of the pin (842) located in the fixed sleeve (815). A spring (844) is sleeved on the outer wall of the pin (842). The spring (844) is located between the limiting block (843) and the fixed cover (841). A pull ring (845) is movably connected to the end of the pin (842) located outside the fixed sleeve (815). The fixed sleeve (815) has a third shaft hole, the rod diameter of the pin (842) is smaller than the diameter of the third shaft hole, and the size of the limiting block (843) is adapted to the diameter of the third shaft hole.

6. The tooling for riveting corner pieces according to claim 1, characterized in that, The cam pressing mechanism (6) includes a cylindrical connecting block (61), a limiting sleeve (62), a lateral pressure member (63), and a cam (64). The cylindrical connecting block (61) is connected to the bottom of the support block (71), and the cylindrical connecting block (61) extends into the limiting sleeve (62). The lateral pressure member (63) passes radially through the limiting sleeve (62) and the cylindrical connecting block (61), and the inner diameter of the limiting sleeve (62) is larger than the outer diameter of the cylindrical connecting block (61). The cam (64) is rotatably fitted on the outside of the limiting sleeve (62), and both ends of the lateral pressure member (63) are in contact with the inner wall of the cam (64). The cam (64) and the limiting sleeve (62) move axially along the lateral pressure member (63), and the cam (64) rotates around the limiting sleeve (62) so that the outer edge of the cam (64) contacts the side of the workpiece (3), and the cam (64) presses the workpiece (3) against the side through the lateral pressure member (63).

7. The tooling for riveting corner pieces according to claim 6, characterized in that, The lateral pressure member (63) includes a pin (631) and a first spring (632). The pin (631) passes radially through the limiting sleeve (62) and the cylindrical connecting block (61). The first spring (632) is sleeved on one end of the pin (631). The two ends of the first spring (632) contact the side wall of the cylindrical connecting block (61) and the inner wall of the cam (64) respectively. The cam (64) presses the part to be limited by the first spring (632). The cylindrical connecting block (61) has a through hole that matches the size of the pin (631). The side wall of the limiting sleeve (62) has two symmetrical insertion holes. The pin (631) is inserted into one insertion hole of the limiting sleeve (62), the through hole of the cylindrical connecting block (61), and the other insertion hole of the limiting sleeve (62) in sequence. The first spring (632) passes through one of the insertion holes and its two ends contact the side wall of the cylindrical connecting block (61) and the inner wall of the cam (64) respectively. The cylindrical connecting block (61) has a limiting mounting groove (611) on its side wall that communicates with the through hole and is used to limit the position of the first spring (632).

8. The tooling for riveting corner pieces according to claim 7, characterized in that, The outer wall of the cylindrical connecting block (61) is fitted with an elastic limiting member (65), which is located at the top of the cam (64) and the limiting sleeve (62); The elastic limiting member (65) includes a second spring (651) and a washer (652) respectively sleeved on the outer wall of the cylindrical connecting block (611). The washer (652) is located at the top of the cam (64) and the limiting sleeve (62), and the second spring (651) is located between the bottom wall of the support block (71) and the washer (652). The bottom of the support block (71) is provided with an annular limiting groove (711) along the direction of the cylindrical connecting block (61), and the end of the second spring (651) away from the gasket (652) extends into the annular limiting groove (711).

9. The tooling for riveting corner pieces according to claim 6, characterized in that, The bottom of the cam (64) is provided with multiple positioning grooves (641), and the side wall of the base (1) is provided with a T-shaped sliding groove (11). The sliding mechanism (5) includes a T-shaped slider (51) that cooperates with the T-shaped slide groove (11), a fixing block (52) connected to the end of the T-shaped slider (51), an elastic positioning element (53) connected to the T-shaped slider (51) and rollingly contacting the positioning groove (641), and an axial fastening screw (54) that axially passes through the fixing block (52) and the T-shaped slider (51). The axial fastening screw (54) passes through the fixing block (52) and the T-shaped slider (51) in sequence and abuts against the inner wall of the T-shaped slide groove (11). The axial fastening screw (54) located outside the fixing block (52) is connected to a handle (55). The fixing block (52) is connected to the bottom of the cylindrical connecting block (61) by a connecting screw (56).

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