Supporting plate nut riveting hole guiding tool with detachable hole guiding head

Abstract

According to the multi-specification supporting plate nut riveting hole guiding tool with the detachable hole guiding head, the problems that an existing supporting plate nut riveting hole guiding tool is inconvenient to use and operate, and a drilled hole deviates are solved. The tool comprises a supporting plate nut hole guiding head, a quick release assembly and a handle. The handle comprises a holding end and a fixed end which are connected in sequence; the supporting plate nut hole guiding head comprises a detachable positioning pin, and a positioning hole guiding part and a connecting part which are connected in sequence; the supporting plate nut guide hole head connecting part is detachably connected with the handle fixing end through a quick release assembly; the supporting plate nut guide hole head positioning guide hole part has different structural forms corresponding to supporting plate nuts of different specifications, a fixing pin and two guide holes are formed in the supporting plate nut guide hole head positioning guide hole part, and the supporting plate nut guide hole head positioning guide hole part corresponds to a screw mounting hole and two rivet holes in the supporting plate nut in a one-to-one mode and is used in cooperation with the screw mounting hole and the rivet holes in the supporting plate nut, so that the supporting plate nut guide hole head positioning guide hole part can adapt to different working conditions; and the detachable positioning pin can be in clearance fit with the two guide holes and is used for limiting and fixing the hole guiding head of the supporting plate nut after the first rivet hole is punched.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft assembly, manufacturing and repair technology, and specifically relates to a tooling for riveting pilot holes for a plate nut with a removable pilot hole head. Background Technology

[0002] During aircraft assembly, repair, and modification, detachable components such as covers, skins, removable leading edges, equipment bases, and conduit clamps are connected to the airframe structure using numerous single-ear, double-ear, and wing-shaped bracket nuts of various specifications, along with screws. The connection between the bracket nuts and the airframe structure is typically achieved using rivets. A standard bracket nut has one screw mounting hole and two rivet holes. When installing the bracket nut onto the aircraft structure, screw mounting holes and rivet mounting holes corresponding to the corresponding bracket nut specifications must be pre-drilled into the structure. The position and size of the screw hole correspond to the screw mounting position and size, and the position and size of the rivet hole correspond to the rivet hole position and size on the bracket nut.

[0003] The traditional method for drilling mounting holes for pallet nuts involves manually drilling the screw mounting positions, pre-assembling a standard pallet nut, clamping it with wire cutters, using the standard pallet nut as a drilling mold, and then disassembling the standard pallet nut after drilling. This method suffers from problems such as complex operation, low drilling efficiency, poor hole quality, high scrap rate, and the risk of drill bit breakage causing personal injury.

[0004] To address these issues, Chinese patent CN204657539U discloses a guide hole tool for pallet nuts. This tool, using a riveted guide head and handle, enables batch processing of rivet holes for single-specification pallet nuts. However, the guide head is not replaceable, requiring a large number of guide heads and corresponding handles for various pallet nut specifications. This results in a heavy tooling set and inconvenience during tooling use and transfer. Chinese patent CN218575066U discloses a drill jig structure for pallet nuts, integrating rivet holes for various pallet nut models and specifications onto a single drill jig. However, this design suffers from hole interference for pallet nuts of similar specifications, and is prone to drilling misalignment and machine failure due to tooling wear or operational errors.

[0005] To improve the current method of positioning the riveting pilot holes for pallet nuts, which suffers from inconvenient operation and drilling misalignment, and to enhance production efficiency, there is an urgent need to design a lightweight, accurate positioning tool with quick disassembly and replacement of the pilot hole head that can be used for various specifications of pallet nuts, so as to better meet the needs of aircraft assembly, manufacturing and repair. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of inconvenient operation and drilling misalignment in the current method of riveting pilot holes for pallet nuts, and to provide a multi-specification pallet nut riveting pilot hole tool with a removable pilot hole head. This tool has a highly accurate pilot hole function and a lightweight tooling structure, and the pilot hole head can be quickly disassembled and assembled to achieve rapid riveting of pallet nuts of different specifications.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A tooling for riveting pilot holes for a pallet nut with a removable pilot hole head, characterized in that it includes a pallet nut pilot hole head, a quick-release assembly, and a handle;

[0009] The handle includes a gripping end and a fixing end connected in sequence;

[0010] The tray nut lead hole head includes a removable positioning pin and a positioning lead hole part and a connecting part connected in sequence;

[0011] The tray nut lead hole head connection part is detachably connected to the handle fixing end through a quick-release assembly;

[0012] The positioning hole part of the tray nut has different structural forms corresponding to different specifications of tray nuts. It is provided with a fixing pin and two guide holes, which correspond one-to-one with one screw mounting hole and two rivet holes on the tray nut and are used in conjunction to adapt to different working conditions.

[0013] The removable positioning pin can be clearance-fitted with both guide holes, and is used to limit and fix the guide hole head of the pallet nut after the first rivet hole is drilled.

[0014] Furthermore, the fixed end of the handle is defined as the front end, and the gripping end as the rear end;

[0015] The fixed end is provided with a mounting groove;

[0016] The front end face and one of the sides of the mounting groove are provided with openings, and the upper and lower groove walls of the mounting groove are provided with corresponding mounting through holes.

[0017] Furthermore, the quick-release assembly is inserted into the handle fixing end through the side opening of the mounting slot and is movably mounted on the handle fixing end;

[0018] The guide plate nut lead hole head connecting part is inserted into the handle fixing end from the front end opening of the mounting groove, and is locked in the fixing end by the quick release assembly, while the guide plate nut lead hole head positioning lead hole part is located on the outside of the handle fixing end.

[0019] Furthermore, both guide holes are provided with guide recesses on their upper surfaces, which can help avoid the risk of drill bit breakage during drilling.

[0020] Furthermore, a groove is provided on one side of the lead hole head connection portion of the tray nut.

[0021] Furthermore, the quick-release assembly includes a rocker latch, a pin, and a torsion spring; the rocker latch and the torsion spring are mounted on the handle via the pin.

[0022] The rocker latch has a step in the middle, which divides the rocker latch into two parts from front to back; the structure at the front of the step is adapted to the groove on the lead hole head connection of the support plate nut; the structure at the rear of the step is set as a side-opening mounting position for installing torsion spring, and the upper and lower walls of the mounting position are respectively provided with pin mounting holes.

[0023] The pin passes sequentially through the mounting through hole on the upper groove wall of the handle fixing end, the pin mounting hole on the upper wall of the rocker latch mounting position, the torsion spring, the pin mounting hole on the lower wall of the rocker latch mounting position, and the mounting through hole on the lower groove wall of the handle fixing end to install the rocker latch on the handle fixing end; the torsion spring is located in the mounting position, and its two ends press against the inner wall of the mounting position and the groove wall of the handle fixing end mounting slot, that is, the inner wall of the mounting position and the mounting groove wall play a limiting role on both sides of the torsion spring;

[0024] The rocker latch can rotate circumferentially around the pin shaft under external force, and can automatically reset and lock the guide plate nut head under the action of the torsion spring. That is, when the rear side of the rocker latch is pressed, the rocker latch can rotate circumferentially around the pin shaft. At this time, the guide plate nut head connecting part is inserted into the mounting groove of the handle fixing end. After the force is stopped, the rocker latch automatically resets under the action of the torsion spring. In the reset state, the front part of the rocker latch head is adapted to the guide plate nut head connecting part and is locked. Similarly, pressing the rear side of the rocker latch can also pull out the guide plate nut head.

[0025] Furthermore, for a single-ear bracket nut, the fixing pin and two guide holes on the positioning hole part of the bracket nut lead hole head are arranged in a straight line;

[0026] For double-eared bracket nuts, the fixing pin on the positioning hole part of the bracket nut is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a straight line.

[0027] For the wing-shaped bracket nut, the fixing pin on the positioning hole part of the bracket nut is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a triangular arrangement.

[0028] Thus, the pallet nut riveting pre-hole tooling designed in this utility model can quickly disassemble and replace the pallet nut pre-hole head according to the specifications of the pallet nut, so as to be used for pallet nuts of various specifications.

[0029] The advantages of this utility model are:

[0030] 1. This utility model has a simple structure, is lightweight and easy to carry, and is easy to operate. When making mounting holes for pallet nuts, it can ensure the accuracy of the riveting hole position of the pallet nut and the efficiency of disassembly and assembly of the pallet nut pilot hole head, significantly improving the quality and efficiency of riveting drilling of pallet nuts under complex working conditions.

[0031] 2. When encountering various types of pallet nut washers for rivet holes during aircraft assembly, multiple pallet nut pilot hole heads can be used with the same handle for disassembly and interchangeability. This not only improves the efficiency and quality of pallet nut installation and hole making, but also greatly reduces the weight of the complete tooling and the complexity of construction.

[0032] 3. This utility model can realize quick and accurate pre-drilling for the riveting of pallet nuts. The pre-drilling head of the pallet nut is connected to the handle through a quick-release component. After the pre-drilling head of the pallet nut is disassembled and assembled, the rocker latch can automatically reset under the elastic force of the torsion spring, which can realize the quick disassembly and replacement of pre-drilling heads of various types of pallet nuts under complex working conditions. Attached Figure Description

[0033] Figure 1 Here is a schematic diagram of the structure of the tray nut pre-hole head of this utility model: (a) is a double-ear tray nut pre-hole head, (b) is a single-ear tray nut pre-hole head, and (c) is a butterfly-shaped tray nut pre-hole head;

[0034] Figure 2 This is a structural schematic diagram of the quick-release assembly of this utility model;

[0035] Figure 3 This is a schematic diagram of the handle of this utility model;

[0036] Figure 4 This is a schematic diagram of the overall assembly structure of this utility model, taking the double-ear bracket nut lead hole head as an example.

[0037] Figure 5 This is a schematic diagram of the operation of the pilot hole for the double-ear support plate nut of this utility model. (a) is a schematic diagram of the assembly of the pilot hole tool and the pilot hole head of the double-ear support plate nut. Figure 1 (b) is a schematic diagram of the assembly of the pilot hole fixture and the pilot hole head of the double-ear support plate nut. Figure 2 ;

[0038] Figure 6 This is a schematic diagram of the single-ear support plate nut pilot hole operation of this utility model. (a) is a schematic diagram of the assembly of the pilot hole tooling and the pilot hole head of the single-ear support plate nut. Figure 1 (b) is a schematic diagram of the assembly of the pilot hole fixture and the pilot hole head of the single-ear support plate nut. Figure 2 ;

[0039] Figure 7 This is a schematic diagram of the operation of the pilot hole for the wing-shaped support plate nut of this utility model. (a) is a schematic diagram of the assembly of the pilot hole tool and the pilot hole head of the wing-shaped support plate nut. Figure 1(b) is a schematic diagram of the assembly of the pilot hole fixture and the pilot hole head of the wing plate nut. Figure 2 .

[0040] The attached icon is labeled as follows:

[0041] 1. Guide hole head for plate nut; 1-1. First guide hole; 1-2. Second guide hole; 1-3. Fixing pin; 1-4. Removable positioning pin; 1-5. Groove;

[0042] 2. Quick-release assembly; 2-1. Rocker latch; 2-2. Pin; 2-3. Torsion spring;

[0043] 3. Handle; 3-1. Fixed end; 3-2. Grip end; 3-3. Mounting through hole; 3-4. Mounting slot;

[0044] 4. Mounting plate; 5. Double-ear bracket nut; 6. Single-ear bracket nut; 7. Butterfly bracket nut. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0046] like Figure 1-6 As shown, a mounting tool for a pallet nut with a removable pilot hole head includes a pallet nut pilot hole head, a quick-release assembly, and a handle.

[0047] The handle includes a gripping end and a fixed end connected in sequence; the fixed end of the handle is defined as the front end and the gripping end as the rear end; a mounting groove is provided in the fixed end; the front end face and one of the sides of the mounting groove are provided with openings, and the upper and lower groove walls of the mounting groove are respectively provided with mounting through holes, namely the upper mounting through hole and the lower mounting through hole.

[0048] The guide nut head includes a removable locating pin and a locating guide hole section and a connecting section connected in sequence. The locating guide hole section has a fixing pin, a first guide hole, and a second guide hole, which correspond one-to-one with one screw mounting hole and two rivet holes on the guide nut and are used in conjunction with each other. Specifically, the fixing pin mates with the main hole of the guide nut, and the two guide holes serve to limit the rivet holes on the guide nut. To prevent drill bit breakage during drilling, guide recesses are provided on the upper end faces of both guide holes; the removable locating pin can be clearance-fitted with both guide holes, used to limit and fix the guide nut head after the first rivet hole is drilled. The fixing pin and the two guide holes on the locating guide hole section have different distribution patterns corresponding to different specifications of guide nuts, which can adapt to different working conditions. See [link to relevant documentation]. Figure 1For (a)-(c), for a single-eared plate nut, the fixing pin and two guide holes on the positioning pilot hole are arranged in a straight line; for a double-eared plate nut, the fixing pin on the positioning pilot hole of the plate nut pilot hole head is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a straight line; for a butterfly plate nut, the fixing pin on the positioning pilot hole is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a triangular arrangement. A groove is provided on one side of the connecting part, which is inserted into the handle fixing end through the opening at the front end of the mounting groove and is secured to the fixing end by the quick-release assembly. The positioning pilot hole is located on the outside of the handle fixing end.

[0049] The quick-release assembly is inserted into the handle fixing end through the side opening of the mounting slot and is movably mounted on the handle fixing end. It specifically includes a rocker latch, a pin, and a torsion spring. The rocker latch and torsion spring are mounted on the handle via the pin. A step is provided in the middle of the rocker latch, dividing it into two parts from front to back. The structure at the front of the step is adapted to the groove on the lead hole connection of the support nut. The structure at the rear of the step is a side-opening mounting position for the torsion spring, with corresponding pin mounting holes on the upper and lower walls of this mounting position: an upper pin mounting hole and a lower pin mounting hole. The pin passes sequentially through the upper mounting through hole, the upper pin mounting hole, the torsion spring, the lower pin mounting hole, and the lower mounting through hole to mount the rocker latch on the handle fixing end. The torsion spring is located within the mounting position, with its two ends pressing against the inner wall of the mounting position and the wall of the mounting slot on the handle fixing end, respectively. The inner wall of the mounting position and the wall of the mounting slot act as limiting forces on both sides of the torsion spring. At this point, the connecting part of the tray nut pilot hole and the quick-release assembly rocker latch both form a clearance fit with the handle fixing end.

[0050] The rocker latch can rotate circumferentially around the pin shaft under external force, and can automatically reset and lock the tray nut lead hole head under the action of the torsion spring. When the tray nut lead hole head needs to be replaced, first press the rocker latch, and the quick release assembly will reach the unlocked state. At this time, the tray nut lead hole head can be freely removed or inserted. After the tray nut lead hole head is inserted, release the rocker latch. The rocker latch will reset under the action of the torsion spring, and the front end of the rocker latch will clamp the groove on the tray nut lead hole head, and the tray nut lead hole head will reach the fixed state.

[0051] Example 1:

[0052] Taking the double-ear bracket nut as an example, refer to Figure 5 The method for using the pre-drilling tool for the double-eared bracket nut 5 can be achieved by drilling holes through the following steps:

[0053] Step 1: Drill mounting holes on the mounting plate that correspond to the screw holes of the double-ear bracket nut, and insert the bracket nut pre-hole tooling fixing pin into the screw hole;

[0054] Step 2: Adjust the angle of the guide hole tooling for the pallet nut, and drill the first rivet hole on the mounting plate according to the first guide hole of the guide hole head of the pallet nut;

[0055] Step 3: Insert a removable locating pin into the first guide hole for positioning, and drill the second rivet hole on the mounting plate according to the second guide hole;

[0056] Step 4: Remove the removable positioning pin and the guide plate nut pre-hole tooling. The drilling of the guide plate nut mounting hole on the mounting plate is now complete.

[0057] Example 2:

[0058] Taking a single-ear bracket nut as an example, refer to Figure 6 The method for using the pre-drilling tool for the single-ear plate nut can be achieved by drilling holes for installation through the following steps:

[0059] Step 1: Drill mounting holes on the mounting plate that correspond to the screw holes of the single-ear bracket nut, and insert the bracket nut pre-hole tooling fixing pin into the screw holes.

[0060] Step 2: Adjust the angle of the guide hole tooling for the pallet nut, and drill the first rivet hole on the mounting plate according to the first guide hole of the guide hole head of the pallet nut;

[0061] Step 3: Insert a removable locating pin into the first guide hole for positioning, and drill the second rivet hole on the mounting plate according to the second guide hole;

[0062] Step 4: Remove the removable positioning pin and the guide plate nut pre-hole tooling. The drilling of the guide plate nut mounting hole on the mounting plate is now complete.

[0063] Example 3:

[0064] Taking the wing-shaped bracket nut as an example, refer to Figure 7 The method for using the guide plate nut pre-hole tooling can be achieved by drilling holes for the installation of the wing-shaped guide plate nut through the following steps.

[0065] Step 1: Drill mounting holes on the mounting plate that correspond to the screw holes of the wing plate nut, and insert the mounting pin of the wing plate nut pre-hole tooling into the screw holes.

[0066] Step 2: Adjust the angle of the guide hole tooling for the pallet nut, and drill the first rivet hole on the mounting plate according to the first guide hole of the guide hole head of the pallet nut;

[0067] Step 3: Insert a removable locating pin into the first guide hole for positioning, and drill the second rivet hole on the mounting plate according to the second guide hole;

[0068] Step 4: Remove the removable positioning pin and the guide plate nut pre-hole tooling. The drilling of the guide plate nut mounting hole on the mounting plate is now complete.

[0069] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A tooling for riveting pilot holes for a plate nut with a removable pilot hole head, characterized in that: Includes the tray nut pre-hole head, quick-release assembly, and handle; The handle includes a gripping end and a fixing end connected in sequence; The tray nut lead hole head includes a removable positioning pin and a positioning lead hole part and a connecting part connected in sequence; The tray nut lead hole head connection part is detachably connected to the handle fixing end through a quick-release assembly; The positioning hole part of the tray nut has different structural forms corresponding to different specifications of tray nuts. It is provided with a fixing pin and two guide holes, which correspond one to one of the screw mounting holes and two rivet holes on the tray nut and are used in conjunction. The removable positioning pin can be clearance-fitted with both guide holes, and is used to limit and fix the guide hole head of the pallet nut after the first rivet hole is drilled.

2. The mounting fixture for the nut with a removable pilot hole head according to claim 1, characterized in that: Define the fixed end of the handle as the front end and the gripping end as the rear end; The fixed end is provided with a mounting groove; The front end face and one of the sides of the mounting groove are provided with openings, and the upper and lower groove walls of the mounting groove are provided with corresponding mounting through holes.

3. The mounting fixture for the nut riveting of the pallet with a removable pilot hole head according to claim 2, characterized in that: The quick-release assembly is inserted into the handle fixing end through the side opening of the mounting slot and is movably mounted on the handle fixing end; The guide plate nut lead hole head connecting part is inserted into the handle fixing end from the front end opening of the mounting groove, and is locked in the fixing end by the quick release assembly, while the guide plate nut lead hole head positioning lead hole part is located on the outside of the handle fixing end.

4. The mounting fixture for the nut with a removable pilot hole head according to claim 3, characterized in that: The upper end face of both guide holes is provided with guide recesses.

5. The mounting fixture for the nut riveting of the pallet with a removable pilot hole head according to claim 4, characterized in that: A groove is provided on one side of the lead hole head connection part of the tray nut.

6. The mounting fixture for a nut with a removable pilot hole head according to claim 5, characterized in that: The quick-release assembly includes a rocker latch, a pin, and a torsion spring. The rocker latch has a step in the middle, which divides the rocker latch into two parts from front to back; the structure at the front of the step is adapted to the groove on the lead hole head connection of the support plate nut; the structure at the rear of the step is set as an installation position, and the upper and lower walls of the installation position are respectively provided with pin mounting holes. The pin passes sequentially through the mounting through hole on the upper groove wall of the handle fixing end, the pin mounting hole on the upper wall of the rocker latch mounting position, the torsion spring, the pin mounting hole on the lower wall of the rocker latch mounting position, and the mounting through hole on the lower groove wall of the handle fixing end to install the rocker latch on the handle fixing end; the torsion spring is located in the mounting position, and its two ends press against the inner wall of the mounting position and the groove wall of the handle fixing end mounting slot, respectively. The rocker latch can rotate circumferentially around the pin shaft under external force, and can automatically reset and lock the guide plate nut lead hole head under the action of torsion spring.

7. The mounting fixture for a nut with a removable pilot hole head according to any one of claims 1-6, characterized in that: For a single-ear bracket nut, the fixing pin and two guide holes on the positioning hole part of the bracket nut lead hole head are arranged in a straight line; For double-eared bracket nuts, the fixing pin on the positioning hole part of the bracket nut is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a straight line. For the wing-shaped bracket nut, the fixing pin on the positioning hole part of the bracket nut is located in the middle, and the two guide holes are located on both sides of the fixing pin, forming a triangular arrangement.

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