High-precision riveting method for rotary mechanism

Abstract

The application relates to a high-precision riveting method of a rotating mechanism, and belongs to the technical field of aerospace. The method solves the problem that the accuracy of the relative positions of multiple rotating mechanisms in a product during a riveting process in the prior art is difficult to control, thereby causing the movement of the rotating mechanism to be jammed. The riveting method comprises the following steps: trial assembling a main body and a secondary body of the product; inserting a driving rod into the secondary body through a second rotating shaft hole on a simulated joint, and connecting the driving rod with a main rotating shaft fixed on the secondary body; rotating the driving rod to drive the secondary body to rotate relative to the main body; restraining and fixing the main body and the secondary body by using a pad block group; drilling and riveting holes on a mounting surface connecting a lug and the main body; loosening support columns on lower pads to ensure that the secondary body rotates smoothly and without jamming, and then tightening the support columns; and riveting the lug on the main body by using a riveting piece. The riveting method has high one-time qualification rate, and the folded and unfolded mechanism after riveting has excellent assembly quality and use effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace technology, and in particular to a high-precision riveting method for a rotating mechanism. BACKGROUND

[0002] In order to facilitate storage and transportation and save carrying space, current aerospace products often use split riveting assembly structures for folding and unfolding mechanisms. In the storage and transportation state, the product is in a folded state. In the working state, the product quickly changes from the folded state to the unfolded state under the action of the folding and unfolding mechanism. Therefore, the reliability of the folding and unfolding mechanism has a significant impact on the performance of the product. With the continuous increase in the size and scale of the product, the number of key rotating mechanisms used to connect parts in the folding and unfolding mechanism also increases, which puts higher requirements on the riveting precision and motion coordination between the rotating mechanisms. Currently, such products can only use manual riveting to ensure precision, which is difficult to assemble and rivet, has a low first-time yield, often requires multiple adjustments and rework, and is difficult to meet design requirements, which seriously affects the use effect of the product. SUMMARY

[0003] In view of the above analysis, the present application aims to provide a high-precision riveting method for a rotating mechanism to solve the problems of large riveting assembly difficulty and low yield of existing folding and unfolding aerospace products containing multiple rotating mechanisms.

[0004] The main purpose of the present application is achieved by the following technical solutions:

[0005] On the one hand, the present application provides a high-precision riveting method for a rotating mechanism, comprising the following steps:

[0006] Step 1: Use the simulated joint of the riveting tool to try to assemble the main body and the secondary body of the product through the connecting lug;

[0007] Step 2: Adjust the gap between the secondary body and the main body with the feeler gauge, then insert the drive rod through the second shaft hole on the simulated joint into the secondary body, and connect it with the main shaft fixed on the secondary body;

[0008] Step 3: Rotate the drive rod to drive the secondary body to rotate relative to the main body to ensure that the secondary body rotates flexibly relative to the main body;

[0009] Step 4: Fix the feeler gauge on the secondary body with adhesive tape, and fill glue between the gap between the connecting lug and the mounting surface of the main body;

[0010] Step 5: constrain and fix the main body and the secondary body with the pad block group;

[0011] Step 6: Drill and rivet holes on the mounting surface of the connecting lug and the main body;

[0012] Step 7: Loosen the support column on the lower pad, remove the adhesive tape fixed on the secondary body, check the rotation of the secondary body relative to the main body again, ensure that the secondary body rotates smoothly and has no jam, and then tighten the support column;

[0013] Step 8: Rivet the connecting lug on the main body with a rivet.

[0014] Optionally, the step 1 comprises adjusting the position of the connecting lug by the constraint support, and adjusting the gap between the connecting lug and the side surface of the main body mounting surface by using the gauge block.

[0015] Optionally, the step 3 further comprises fine-tuning the position of the connecting lug or the clamping gap between the main body and the secondary body if the secondary body does not rotate flexibly relative to the main body, and measuring the rotation resistance torque of the secondary body relative to the main body after adjustment using the force gauge, and the resistance torque should be controlled within 1N·m.

[0016] Optionally, the step 5 comprises the following steps:

[0017] Step 51: Place 4 lower pads on the platform and loosen the simulated joint;

[0018] Step 52: Place the main body, secondary body and simulated joint on the 4 lower pads, and then install 4 upper pads;

[0019] Step 53: Adjust the position of each pad so that the riveting area of the connecting lug is exposed outside the slotted area of the upper pad;

[0020] Step 54: Fasten the upper pad and the lower pad with the connecting piece.

[0021] Optionally, after step 54, it further comprises step 55: adjusting the support column on the lower pad to control the secondary body at the chord plane of the main body, avoiding the rotation of the secondary body.

[0022] Optionally, the step 6 comprises the following steps:

[0023] Step 61: Draw a riveting hole position line on the connecting lug, and each connecting lug contains 2 riveting holes;

[0024] Step 62: Drill riveting holes on the connecting lug and the mounting surface of the main body, and each riveting hole is drilled through;

[0025] Step 63: Drill a countersunk hole on the connecting lug.

[0026] Optionally, in the step 8, the riveting is performed in a positive and negative riveting mode.

[0027] Optionally, in the step 8, the rivet is a rivet.

[0028] Optionally, in the step 8, the number of rivets is 8.

[0029] Optionally, the number of connecting lugs in step 1 is 4.

[0030] In another aspect, the present application also provides a riveting tool for the riveting method described above. The riveting tool comprises a simulation joint, a block set, a driving rod and a positioning member; the simulation joint is used to fix the main body of the product to determine the relative position of the main body; the block set is used to support and constrain the main body and the secondary body of the product; the driving rod is used to simulate the power element, and the secondary body is driven to rotate by rotating the driving rod to simulate the real motion state and analyze the motion condition; the simulation joint and the main body of the product are connected by the positioning member to constrain the positions of the two.

[0031] Optionally, the simulation joint comprises a first end with a wider width and a second end with a narrower width; the first end of the simulation joint is provided with a mounting groove with an opening facing the main body of the product, and the mounting groove is used to place the positioning assembly surface on the main body of the product.

[0032] Optionally, the second end of the simulation joint is provided with a rotating shaft hole, and the driving rod passes through the rotating shaft hole to drive the secondary body of the product to rotate.

[0033] Optionally, the block set comprises a first block set and a second block set; the first block set is used to support and constrain the head of the main body and the secondary body in the width direction; and the second block set is used to support and constrain the body of the main body and the secondary body in the width direction.

[0034] Optionally, the first block set comprises an upper block and a lower block; the inner profile of the upper block and the inner profile of the lower block are respectively adapted to the outer profiles of the two sides of the head of the main body and the two sides of the secondary body, so that the upper block and the lower block can play a supporting and constraining role on the head of the main body and the secondary body after being buckled.

[0035] Optionally, the upper block is provided with a slot corresponding to the mounting surface of the main body, and the slot penetrates in the direction towards the lower block, so as to ensure that the riveting area of the connecting lug is completely exposed, thereby facilitating the riveting operation.

[0036] Optionally, the lower block is provided with a support column corresponding to the position close to the rotating shaft of the profile of the secondary body, and the length of the support column is adjustable to support the secondary body of the product, so as to control the secondary body of the product at the chord plane of the main body.

[0037] Optionally, the second block set comprises an upper block and a lower block; the inner profile of the upper block and the inner profile of the lower block of the second block set are respectively adapted to the outer profiles of the two sides of the body of the main body and the two sides of the secondary body, so that the upper block and the lower block of the second block set can play a supporting and constraining role on the body of the main body and the secondary body after being buckled.

[0038] Optionally, mounting holes are arranged on the corresponding positions of the upper and lower pads to fixedly connect the two through fixing members.

[0039] Compared with the prior art, the present application can achieve at least one of the following beneficial effects:

[0040] (1) The riveting method of the present application is not directly using riveting tool to connect the main body and the auxiliary body of the product through the connecting lug once, but first assembling the main body and the auxiliary body to ensure that they rotate smoothly without jamming, then fixing the connecting lug, punching a riveting hole on the connecting lug, and then confirming that the auxiliary body rotates smoothly relative to the main body without jamming before riveting the main body and the auxiliary body. The riveting method can improve the one-time riveting qualification rate of the product (from 50% to more than 95%) and shorten the production cycle, providing an effective solution to the riveting assembly process difficulty of similar folding products. The riveted product has flexible mechanism movement and excellent assembly quality and use effect.

[0041] (2) The present application innovatively designs a special riveting tool for the folding and unfolding mechanism with multiple rotating mechanisms and large structure size and high assembly precision. The riveting tool specifically includes a simulation joint, a pad set, a driving rod and a positioning member. The simulation joint is used to fix the main body of the product to determine the relative position of the main body. The pad set is used to support and constrain the main body and the auxiliary body of the product. The driving rod is used to simulate the power element, and the auxiliary body is driven to rotate by rotating the driving rod to simulate the real motion state and analyze the motion condition. The simulation joint and the main body of the product are connected by the positioning member to constrain the positions of the two. The riveting tool integrates positioning and clamping functions, and riveting through the riveting tool can easily control the accuracy of the relative positions of the multiple rotating mechanisms during riveting, improve the one-time riveting qualification rate (from 50% to more than 95%), shorten the production cycle, and provide an effective solution to the riveting assembly process difficulty of similar folding products. The riveted product has flexible mechanism movement and excellent assembly quality and use effect.

[0042] (3) The present application sets a support column on the lower pad at a position corresponding to the position near the rotating shaft of the auxiliary body profile, and sets the length of the support column to be adjustable, so as to support the auxiliary body of the product and control the auxiliary body of the product at the chord plane of the main body.

[0043] (4) The present application sets a constraint bracket on the surface of the upper pad facing the lower pad, which can limit the angular swing of the connecting lug, thereby preventing the auxiliary body of the product from swinging too much.

[0044] (5) The present application sets the slot on the upper cushion block corresponding to the mounting surface of the main body, which can ensure the complete exposure of the riveting area of the connecting lug, thereby facilitating the riveting operation.

[0045] The various technical solutions described above can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present application will be described in the subsequent specification, and some advantages will become apparent from the specification or by implementing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0047] Figure 1 Structure diagram of the folding and unfolding product of the present application;

[0048] Figure 2 Structure diagram of the main body of the folding and unfolding product of the present application;

[0049] Figure 3 Schematic diagram of the mounting surface of the connecting lug of the present application;

[0050] Figure 4 Schematic diagram of the riveting tool structure of the present application;

[0051] Figure 5 Schematic diagram of the connecting lug pivot hole of the present application;

[0052] Figure 6 Schematic diagram of the main body and the auxiliary body of the present application;

[0053] Figure 7 Schematic diagram of the folding and unfolding product and the riveting tool of the present application.

[0054] Reference signs:

[0055] 1 - main body; 2 - riveting piece; 3 - auxiliary body; 4 - connecting lug; 5 - main pivot; 6 - connecting pivot; 7 - joint bearing; 8 - simulation joint; 9 - upper cushion block; 10 - screw; 11 - lower cushion block; 12 - positioning piece; 13 - driving rod; 14 - slot; 15 - first pivot hole; 16 - constraint bracket; 17 - support column; 18 - head; 19 - body; 20 - positioning assembly surface; 21 - through hole; 22 - mounting surface; 23 - second pivot hole; 24 - first end; 25 - second end; 26 - mounting slot; 27 - pin hole; 28 - pivot end; 29 - glue. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0057] Example 1

[0058] A specific embodiment of the present invention discloses a riveting method for foldable and unfoldable aerospace products, which enables high-precision riveting of rotating mechanisms. This embodiment does not directly connect the main body and sub-body of the product in one go using riveting fixtures via connecting lugs. Instead, the main body and sub-body are first trial-assembled to ensure smooth rotation without jamming. Then, riveting holes are drilled on the mounting surfaces of the connecting lugs and the main body, and riveting components are used to secure the main body and sub-body. Products obtained using this riveting method have a high first-pass yield rate (increasing from 50% to over 95%), shortening the production cycle and providing an effective solution to the difficulties in riveting assembly processes for similar foldable products. Furthermore, the riveted product exhibits flexible movement, excellent assembly quality, and superior performance.

[0059] The riveting method in this embodiment mainly includes two parts: trial assembly of the main body and the sub-body (including steps one to six below), and ensuring smooth rotation between the main body and the sub-body without jamming before drilling riveting holes on the mounting surface connecting the lug and the main body, and using riveting components to rivet and fix the main body and the sub-body (including steps seven to thirteen below). Specifically, it includes the following steps:

[0060] First, assemble the simulated connector 8 with the main body 1 of the product as one unit.

[0061] like Figure 3 As shown, first, the simulated connector 8 is installed on the positioning assembly surface 20 on the main body. The relative position between the simulated connector and the main body is adjusted so that the three positioning holes on it are aligned. Then, three positioning parts are used to fix the simulated connector 8 to the main body 1.

[0062] Second, place the simulated connector 8 parallel to the platform. At this time, the folded and unfolded product is in a horizontal position. Raise the bottom of the simulated connector 8 appropriately and control the distance between the product and the platform between 100mm and 150mm. After adjusting the distance appropriately, fix the simulated connector firmly on the platform.

[0063] Third, use a dial indicator to measure the symmetry of the mounting surfaces of the four connecting lugs 4 on the main body of the product relative to the neutral surface of the simulated connector mounting groove. The symmetry must be controlled within 0.03mm. If the symmetry exceeds 0.03mm, it needs to be adjusted by filing with a fitter or by adjusting with shims.

[0064] Fourth, such asFigure 5 As shown, insert the four connecting ears into the four connecting ear mounting surfaces 22 on the main body 1 of the product. Use gauge blocks to adjust the gap between the connecting ears 4 and the side of the mounting surface 22 to ensure that the connecting ears are centered relative to the mounting surface and do not swing at an angle.

[0065] Fifth, use a dial indicator to measure the symmetry of the first pivot hole on each of the four connecting lugs relative to the simulated connector mounting slot 26. The symmetry must be controlled within 0.03mm. If the symmetry exceeds 0.03mm, it needs to be adjusted by filing the mounting surface of the connecting lugs or by adjusting the shims to ensure that the pivot hole of the connecting lug is located on the chord plane of the main body.

[0066] Sixth, such as Figure 6 As shown, remove the four connecting lugs from the main body, and then install them together with the main shaft, joint bearing, and connecting shaft onto the product sub-body. Then, install the connecting lugs together with the product sub-body onto the main body. Adjust the position of each connecting lug using the constraint bracket, and use gauge blocks to adjust the gap between the connecting lugs and the side of the main body mounting surface to ensure that the connecting lugs are centered relative to the mounting surface and do not swing at an angle.

[0067] Seventh, use gauge blocks or feeler gauges to roughly adjust the gap between the mating surfaces of the sub-body and the main body, ensuring that the gap is uniform at about 1.5mm. At this point, insert the drive rod through the second rotating hole on the simulation connector into the sub-body and connect it to the main rotating shaft fixed on the sub-body. If the drive rod cannot be inserted into the sub-body, the mating gap between the sub-body and the main body needs to be adjusted until the drive rod can be inserted smoothly.

[0068] Eighth, rotate the drive rod to make the sub-body rotate relative to the main body. Further fine-tune the position of the connecting lug or the meshing gap between the main body and the sub-body according to the rotation flexibility and jamming. The adjustment amount should be controlled within 0.3mm. After adjustment, use a force gauge to measure the rotational resistance torque of the sub-body relative to the main body. The resistance torque should be controlled within 1N·m.

[0069] Ninth, use tape to fix the constraint bracket and gauge block to the sub-body to prevent movement; remove the gauge block between the connecting lug and the main body mounting surface, and fill the gap between them with 502 glue 29. Note that glue 29 should not drip into the joint bearing. Fill the 4 connecting lugs with glue in sequence until the glue is completely cured.

[0070] Tenth, place the four lower pads on the platform, loosen the simulation connector, and place the main body, sub-body, and simulation connector together on the four lower pads. Then install the four upper pads, adjust the position of each pad so that the riveting area of ​​the connecting lug is fully exposed in the slotted area of ​​the upper pad. Tighten the upper and lower pads with screws, and adjust the support column on the lower pad to press the sub-body against the main body to control the sub-body at the chord plane of the main body and prevent the sub-body from rotating.

[0071] Eleventh, draw riveting hole position lines on the connecting lug, each connecting lug contains 2 riveting holes, drill riveting holes on the mounting surface of the connecting lug and the main body, and each riveting hole is drilled through and is provided with a counterbore hole. The counterbore hole is used to accommodate the nail head of the riveting piece to prevent the nail head from protruding from the outer surface of the main body. The counterbore hole adopts a positive-negative mode, and there are 4 positions on each of the positive and negative surfaces.

[0072] Twelfth, loosen the support column on the lower pad, remove the adhesive tape and the restraint bracket fixed on the secondary body, and check again the rotation of the secondary body relative to the main body to ensure that the secondary body rotates smoothly and is not jammed, and then tighten the support column again.

[0073] Thirteenth, rivet the connecting lug on the main body using a rivet. When riveting, adopt a positive-negative mode (the riveting directions of the two riveting pieces are opposite, that is, one riveting piece is riveted from top to bottom, and the other riveting piece is riveted from bottom to top) according to the counterbore hole, so that both sides are uniformly stressed, and the abnormal rotation of the secondary body caused by unilateral stress deformation is avoided. The nail head after riveting is not allowed to exceed the top surface of the simulation joint. The schematic diagram of the product and the riveting tool after assembly is shown in Figure 7 .

[0074] Fourteenth, after riveting is completed, remove all the pad blocks, check that the gap between the main body and the secondary body should be controlled within 1.5±0.3 mm; rotate the drive rod to drive the secondary body to rotate relative to the main body, check the rotation flexibility and jamming, and measure again the rotation torque of the secondary body relative to the main body, which should be controlled within 1 N·m.

[0075] Fifteenth, remove the drive rod, remove the three positioning pieces fixing the simulation joint, and remove the simulation joint from the main body. Clean the surrounding glue and other excess materials of the connecting lug to ensure that the product is clean. At this point, the riveting assembly of the product is completed.

[0076] Example Two

[0077] Another specific embodiment of the present application discloses a riveting tool for completing the riveting method of example one, realizing riveting of a folding and unfolding type aerospace product containing multiple rotating mechanisms with large structure size and high assembly precision requirements.

[0078] As shown in Figure 1 , the folding and unfolding type aerospace product of the present application includes a main body 1 and a secondary body 3. The main body 1 and the secondary body 3 are connected through a connecting lug 4.

[0079] The main body 1 includes a head portion 18 and a body portion 19, and the width of the head portion 18 is greater than the width of the body portion 19.

[0080] As shown in Figure 2As shown, the edge of the head part on one side is provided with a groove with an opening facing the side surface, and the edge of the head part on the opposite side is also provided with a groove with an opening facing the side surface. The connecting part of the two grooves forms a positioning and assembling surface 20, and the positioning and assembling surface is provided with a pin hole 27 through which the positioning member 12 passes.

[0081] Continuing to refer to Figure 2 , the head part is also provided with a through hole 21 through which the main rotating shaft passes, and the through hole 21 penetrates along the length direction of the main body 1 and is used for subsequent trial rotating of the secondary body 3.

[0082] As shown in Figure 3 , the edge of the head part 18 of the main body 1 on one side is provided with a mounting surface 22 for mounting the connecting lug 4, and the edge of the body part 19 of the main body 1 on one side is also provided with a mounting surface 22 for mounting the connecting lug 4. The upper surface and the lower surface of the mounting surface 22 are lower than the upper surface and the lower surface of the main body, and form a stepped surface with the upper surface and the lower surface of the main body. The mounting surface 22 is provided with a riveting hole through which the riveting member 2 passes, and the riveting hole penetrates along the thickness direction of the main body.

[0083] Specifically, the head part of the main body has one mounting surface 22, and the body part of the main body has three mounting surfaces 22.

[0084] The connecting lug 4 includes a clamping end connected with the mounting surface 22 of the main body and a rotating shaft end 28 connected with the secondary body. The clamping end includes a clamping groove in which the mounting surface 22 of the main body 1 is placed. As shown in Figure 1 , the top surface and the bottom surface of the clamping groove are provided with riveting holes through which the riveting member 2 passes. Exemplarily, the number of riveting holes on the top surface and the bottom surface of the clamping groove is two, and the positions of the riveting holes on the top surface and the bottom surface correspond to each other in pairs.

[0085] In a preferred embodiment, the end of one of the two riveting holes on the top surface of the clamping groove is provided with a counterbore for accommodating the head of the riveting member 2, so as to prevent the head from protruding out of the outer surface of the main body.

[0086] The rotating shaft end of the connecting lug 4 is provided with a first rotating shaft hole 15 which penetrates along the thickness direction of the connecting lug 4.

[0087] The edge of the secondary body 3 on the side connected with the main body 1 is provided with a slot (not shown in the figure) for accommodating the rotating shaft end of the connecting lug 4. The connecting lug 4 is connected with the secondary body through a connecting rotating shaft 6, and a joint bearing 7 is arranged in the first rotating shaft hole 15 of the connecting lug 4, and the joint bearing 7 is sleeved on the connecting rotating shaft 6.

[0088] In addition, the bottom of the edge of the secondary body on the side connected with the main body is provided with a groove (not shown in the figure) for accommodating the connecting rotating shaft.

[0089] Specifically, there are multiple connecting lugs, and there are multiple connecting rotating shafts. The connecting rotating shaft close to the head part of the main body is the main rotating shaft 5.

[0090] A riveting tool for realizing the above-mentioned folding and unfolding space product is introduced below.

[0091] As shown in Figure 4 , the riveting tool of the embodiment comprises a simulation joint 8, a cushion block group, a driving rod 13 and a positioning member 12.

[0092] The simulation joint 8 is used to fix the main body 1 of the folding and unfolding space product to determine the relative position of the main body.

[0093] The cushion block group is used to support and constrain the main body 1 and the auxiliary body 3 of the folding and unfolding space product.

[0094] The driving rod 13 is used to simulate a power element, one end of which is a handle end, and the other end is connected with the main shaft 5 fixed on the auxiliary body 3, to simulate the second shaft hole 23 on the simulation joint 8 as a base point, to drive the auxiliary body 3 to rotate by rotating the driving rod 13, to simulate the real motion state and analyze the motion condition.

[0095] The simulation joint 8 and the main body 1 of the folding and unfolding space product are connected by the positioning member 12 to constrain the positions of the two. Exemplarily, the positioning member 12 is a positioning pin.

[0096] As shown in Figure 4 , the simulation joint 8 comprises a first end 24 with a relatively wide width and a second end 25 with a relatively narrow width, i.e. the simulation joint is wide at one end and narrow at the other end.

[0097] The first end 24 of the simulation joint is provided with a mounting groove 26 with an opening facing the main body 1, which is used to place the positioning assembly surface 20 on the main body of the folding and unfolding space product.

[0098] In order to facilitate the placement of the positioning assembly surface 20 on the main body, the mounting groove penetrates along the length direction of the simulation joint.

[0099] In a possible implementation, the top surface and the bottom surface of the mounting groove 26 are parallel to the mounting groove, serving as the reference surface during subsequent riveting. The corresponding positions of the top surface and the bottom surface of the mounting groove 26 are provided with pin holes for the positioning member 12 to pass through.

[0100] Specifically, according to the different lengths of the positioning assembly surface 20, the number of pin holes is different. In the embodiment, the number of pin holes is 3.

[0101] As shown in Figure 3 , the second end 25 of the simulation joint is provided with a second shaft hole 23, through which the driving rod 13 drives the auxiliary body 3 of the folding and unfolding space product to rotate.

[0102] As shown in Figure 4As shown, the cushion block set includes a first cushion block set and a second cushion block set, the first cushion block set being used to support and constrain the head 18 of the main body 1 and the auxiliary body 3 in the width direction, and the second cushion block set being used to support and constrain the body 19 of the main body 1 and the auxiliary body 3 in the width direction.

[0103] The first cushion block set includes an upper cushion block 9 and a lower cushion block 11, the inner profile of the upper cushion block 9 and the inner profile of the lower cushion block 11 being adapted to the outer profiles of the head 18 of the main body 1 and the outer profiles of the auxiliary body 3 on both sides, respectively, so that the upper cushion block 9 and the lower cushion block 11 can support and constrain the head of the main body and the auxiliary body after being buckled.

[0104] As shown, Figure 4 In a preferred embodiment, the upper cushion block 9 is provided with a slot 14 corresponding to the mounting surface 22 of the main body 1, the slot penetrating in the direction towards the lower cushion block 11, so as to ensure that the riveting area of the connecting lug 4 can be completely exposed, thereby facilitating the riveting operation. The lower cushion block 11 is provided with a support column 17 corresponding to the position of the auxiliary body profile close to the connecting pivot, the length of the support column being adjustable, so as to support the auxiliary body 3 of the product by adjusting the support column 17, thereby controlling the auxiliary body 3 of the product at the chord plane of the main body 1.

[0105] Further, the upper cushion block and the lower cushion block are provided with mounting holes at corresponding positions, so as to be fixedly connected by the screws 10.

[0106] Continuing to refer to Figure 4 , the upper cushion block is provided with a constraint bracket 16 on the surface thereof facing the lower cushion block, which is used to limit the swinging of the connecting lug 4 in the angular direction, thereby preventing the auxiliary body 3 of the product from swinging too much. The constraint bracket 16 is provided with a limiting slot, the inner surface of the limiting slot being arc-shaped.

[0107] As shown, Figure 4 Figure 4 The second cushion block set is similar to the first cushion block set in structure, except that the inner profile of the upper cushion block 9 and the inner profile of the lower cushion block 11 of the second cushion block set are adapted to the outer profiles of the body 19 of the main body and the outer profiles of the auxiliary body 3 on both sides, respectively, so that the upper cushion block 9 and the lower cushion block 11 can support and constrain the body of the main body and the auxiliary body after being buckled.

[0108] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, which shall be covered within the protection scope of the present application.

Claims

1. A high-precision riveting method for a rotating mechanism, characterized in that, It comprises the following steps: Step 1: try to assemble the main body and the auxiliary body of the product through the connecting lug by using the simulation joint of the riveting tool; Step 2: adjust the gap between the auxiliary body and the occlusal surface of the main body by using the gauge, and then insert the driving rod into the auxiliary body through the second rotation shaft hole on the simulation joint and connect it with the main rotation shaft fixed on the auxiliary body; Step 3: rotate the driving rod to drive the auxiliary body to rotate relative to the main body, and ensure that the auxiliary body rotates flexibly relative to the main body; Step 4: fix the gauge on the auxiliary body by using the adhesive tape, and fill the gap between the connecting lug and the mounting surface of the main body with glue; Step 5: constrain and fix the main body and the auxiliary body by using the cushion block group; Step 6: drill and rivet holes on the mounting surface of the connecting lug and the main body; Step 7: the lower cushion block is provided with a support column at a position corresponding to the connecting rotation shaft close to the profile of the auxiliary body, and the length of the support column is adjustable to support the auxiliary body of the product by adjusting the support column; loosen the support column on the lower cushion block, remove the adhesive tape fixed on the auxiliary body, and check the rotation of the auxiliary body relative to the main body again to ensure that the auxiliary body rotates smoothly and without jamming, and then tighten the support column; Step 8: rivet the connecting lug on the main body by using the riveting piece. The simulation joint comprises a first end with a relatively wide width and a second end with a relatively narrow width, and the first end of the simulation joint is provided with a mounting groove with an opening facing the main body, which is used to place the positioning and assembly surface on the main body of the folded and unfolded aerospace product; The cushion block group comprises a first cushion block group and a second cushion block group, and the first cushion block group comprises an upper cushion block and a lower cushion block; The second cushion block group is similar in structure to the first cushion block group, and the upper cushion block and the lower cushion block can support and constrain the body and the auxiliary body of the main body after being buckled.

2. The riveting method according to claim 1, characterized by The step 1 comprises adjusting the position of the connecting lug by using the constraint bracket and adjusting the gap between the connecting lug and the side surface of the mounting surface of the main body by using the gauge. The upper cushion block is provided with a constraint bracket on the surface facing the lower cushion block, which is used to limit the swing of the connecting lug in the angular direction; and the constraint bracket is provided with a limiting groove, and the inner surface of the limiting groove is arc-shaped.

3. The riveting method according to claim 1, characterized by, The step 3 further comprises the following steps: if the auxiliary body does not rotate flexibly relative to the main body, fine-tune the position of the connecting lug or the occlusal gap between the main body and the auxiliary body, and then measure the rotation resistance torque of the auxiliary body relative to the main body by using the force gauge, and the resistance torque should be controlled within 1N·m.

4. The riveting method according to claim 1, characterized by, The step 5 comprises the following steps: Step 51: place four lower cushion blocks on the platform and loosen the simulation joint; Step 52: place the main body, the auxiliary body and the simulation joint on the four lower cushion blocks, and then install four upper cushion blocks; Step 53: adjust the positions of the cushion blocks so that the riveting area of the connecting lug is exposed in the slotted area of the upper cushion block; Step 54: fasten the upper cushion block and the lower cushion block by using the connecting piece.

5. The riveting method according to claim 1, characterized by, The step 6 comprises the following steps: Step 61: draw a riveting hole position line on the connecting lug, and each connecting lug contains two riveting holes; Step 62: drill riveting holes on the mounting surface of the connecting lug and the main body, and each riveting hole is drilled through; Step 63: drill a countersunk hole on the connecting lug.

6. The riveting method according to claim 1, characterized by, In the step 8, the riveting is performed in a positive and negative riveting mode.

7. The riveting method according to claim 6, characterized in that In the step 8, the riveting piece is a rivet.

8. The riveting method according to claim 7, characterized in that, The number of rivets in step 8 is 8.

9. The riveting method according to claim 6, characterized by, The number of connecting lugs in step 1 is 4.

10. A swivel mechanism riveting tool characterized by comprising: A riveting method for accomplishing any one of claims 1-9.

Images