Drilling tool for elevator adjusting sheet mounting hole

Abstract

The invention discloses a drilling tool for elevator adjusting sheet mounting holes. The drilling tool comprises a base, a first positioning structure, a second positioning structure, a pressing cross beam and a locking piece. The base comprises a bottom drilling jig hole, and a drilling bushing is arranged in the bottom drilling jig hole; the first positioning structure performs x-direction positioning, and the second positioning structure performs y-direction positioning; the pressing cross beam penetrates through the interior of the elevator adjusting piece, the two ends of the pressing cross beam are detachably fixed to the base through locking pieces, and the pressing cross beam positions the elevator adjusting piece in the z direction. A main drill jig part corresponding to a main connecting hole of a hinge connecting plate is arranged on a base, a first positioning structure and a second positioning structure are arranged to position an elevator adjusting piece in the x direction and the y direction, and a pressing cross beam penetrating through the elevator adjusting piece is arranged to position the elevator adjusting piece in the z direction. And the elevator adjusting sheet has an accurate and reliable positioning framework. The position precision of the mounting hole can be ensured, and the hole position deviation is reduced.

Description

Technical Field

[0001] This invention relates to the field of aircraft manufacturing technology, and in particular to a drilling tool for mounting holes of elevator adjustment plates. Background Technology

[0002] The elevator trimmer, a key component of an aircraft's control system, is a small movable wing mounted on the right elevator. It helps the pilot balance flight attitude and reduce control forces through aerodynamic compensation. The elevator trimmer has mounting holes for fasteners to pass through and connect to the hinge plate, which in turn connects to the hinge. The mounting holes on the elevator trimmer must be precisely aligned with those on the hinge plate to achieve a precise fit. Otherwise, installation problems such as jamming or misalignment will occur, affecting the movement and coordination with the hinge. Therefore, the machining accuracy of the elevator trimmer's mounting holes directly impacts the aircraft's handling stability and safety, thus requiring extremely high precision.

[0003] Because the elevator trimmer is a thin-walled box-section structure, and its mounting holes are located on the thin-plate skin, traditional manual positioning methods rely entirely on the operator's experience to control hole position accuracy. This not only results in low processing efficiency but also leads to large hole position deviations and inconsistent relative positions of the holes, failing to meet the high-precision machining requirements of aerospace components. Therefore, there is an urgent need to design a drilling fixture that is precise in positioning, reliable in locking, and easy to operate for accurately machining the mounting holes of the elevator trimmer. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a drilling fixture for mounting holes of elevator adjustment plates, enabling precise positioning and reliable fixing of parts, thereby ensuring the machining accuracy and consistency of the mounting holes and improving machining efficiency.

[0005] The technical solution adopted in this invention is as follows:

[0006] This application provides a drilling fixture for mounting holes of elevator adjustment plates. The elevator adjustment plates are hollow and are used to connect with hinge connecting plates. The drilling fixture is used to drill holes in the elevator adjustment plates. The drilling fixture includes a base, a first positioning structure, a second positioning structure, a clamping crossbeam, and a locking component. The base includes a main drill jig and a clamping mounting part disposed on the side of the main drill jig. The main drill jig has a plurality of bottom drill jig holes arranged at intervals. The plurality of bottom drill jig holes correspond to the main connecting holes of the hinge connecting plate. Drilling bushings are disposed in the bottom drill jig holes. The first positioning structure and the second positioning structure are respectively disposed on the periphery of the main drill jig. The first positioning structure is used to position the elevator adjustment piece in the x-direction, and the second positioning structure is used to position the elevator adjustment piece in the y-direction. The clamping beam is located on the side of the main drill jig where the first positioning structure or the second positioning structure is provided. The two ends of the clamping beam are detachably fixed to the clamping mounting part of the base by the locking member. The clamping beam is used to position the elevator adjustment plate in the Z direction. When drilling is performed on the elevator adjustment plate using the drilling tool, the adjustment plate connecting end panel for connecting with the hinge connecting plate mates with the main drill jig. The clamping beam passes through the interior of the elevator adjustment plate, so that the adjustment plate connecting end panel for connecting with the hinge connecting plate is limited and installed between the main drill jig and the clamping beam.

[0007] This application provides a dedicated drilling fixture adapted to the elevator adjustment plate: A main drill jig corresponding to the main connecting hole of the hinge connecting plate is provided on the base, and a first positioning structure and a second positioning structure are provided to position the elevator adjustment plate in the x and y directions. A clamping beam passing through the elevator adjustment plate is provided to position it in the z direction, thus providing the elevator adjustment plate with an accurate and reliable positioning structure. When drilling the mounting holes for the elevator adjustment plate, the positional accuracy of the mounting holes is guaranteed, and hole position deviations are reduced. Furthermore, after the elevator adjustment plate is fixed by the drilling fixture, holes can be drilled sequentially, which improves drilling efficiency.

[0008] In an optional embodiment, it further includes a hole positioning pin, at least one of the plurality of bottom drill holes is an initial bottom drill hole, and the clamping crossbeam also has a bottom hole positioning hole corresponding to the initial bottom drill hole; After the elevator adjustment plate has prepared mounting holes corresponding to the initial bottom drill hole, the hole positioning pin is used to be inserted sequentially into the drill bushing of the initial bottom drill hole, the prepared mounting hole and the bottom hole positioning hole, to provide a positioning reference for the preparation of subsequent mounting holes.

[0009] Under the basic positioning premise of the first positioning structure, the second positioning structure and the clamping crossbeam, the hole positioning pin provides double positioning for drilling the mounting hole, further ensuring the accuracy of the mounting hole.

[0010] When drilling holes in the skin of the elevator adjustment plate using a drilling fixture, since the overall size of the elevator adjustment plate is relatively long and the thickness of the skin is relatively small, on the one hand, the skin is pressed and limited by the base and the clamping beam to restrict the skin from bending or displacement during the drilling process, thereby ensuring the drilling accuracy; on the other hand, by setting bottom hole positioning holes in the clamping beam, the pre-machined mounting holes are repositioned using hole positioning pins, further improving the machining accuracy of the positioning holes.

[0011] In an optional embodiment, the first positioning structure includes abutting body and pressing body, the abutting body and the pressing body are respectively disposed on two opposite sides of the main drill jig and located on both sides of the bottom drill jig hole; The abutment is used to cooperate with the rear end panel of the elevator adjustment plate, and the pressing body is used to cooperate with the front end panel of the elevator adjustment plate. The rear end panel and the front end panel of the adjustment plate are located on both sides of the adjustment plate connecting end panel and form a triangular structure.

[0012] In an optional embodiment, the pressing body includes a baffle and a side drilling template, the baffle being mounted on the base and the side drilling template being mounted on the baffle; The side drilling template has at least one side drilling hole, which corresponds to the side connection hole of the hinge connecting plate bending arm, and a drilling bushing is provided in the side drilling hole.

[0013] In an optional embodiment, the baffle includes a first mounting part and a second mounting part, the baffle being detachably connected to the base via the first mounting part, and the baffle being detachably connected to the side drilling template via the second mounting part; The side-drill template is used to mate with the front end panel of the adjustment piece, and the surface shape of the template is adapted to the surface shape of the front end panel of the adjustment piece.

[0014] In an optional embodiment, the side-drill template includes multiple templates, each with a different shape of the surface that mates with the front end panel of the adjustment piece, or each with a different thickness.

[0015] In practical use, the practicality of the drilling tooling can be enhanced by replacing the side drill template with one of different surface shapes to accommodate the front panel of the adjustment piece with one of different surface shapes, or by replacing the side drill template with one of different thicknesses to accommodate the elevator adjustment piece with one of different width dimensions (the spacing between the rear panel and the front panel of the adjustment piece at the corresponding side mounting hole positions).

[0016] In an optional embodiment, the side drill template is tilted away from the side of the bottom drill hole; The side drill hole has multiple holes, at least one of the multiple bottom drill holes is an initial side drill hole, and the clamping crossbeam also has a side hole positioning hole corresponding to the initial side drill hole; It also includes hole positioning pins. After the elevator adjustment piece has prepared mounting holes corresponding to the initial side drill jig holes, the hole positioning pins are used to be inserted sequentially into the drill bushing of the initial side drill jig holes, the prepared mounting holes and the side hole positioning pins to provide positioning references for the preparation of subsequent mounting holes.

[0017] In actual use, the connection position between the rear end panel of the adjustment piece and the connecting end panel of the adjustment piece is arc-shaped, which is adapted to the arc-shaped abutment groove.

[0018] In an optional embodiment, the second positioning structure includes a left positioning boss and a right positioning boss spaced apart on the surface of the base, wherein the left positioning boss and the right positioning boss are positioned from both ends of the elevator adjustment piece, respectively. The distance between the left positioning boss and the right positioning boss corresponds to the length of the elevator adjustment piece.

[0019] In an optional embodiment, the left positioning boss and the right positioning boss are integrally formed with the main drill jig. Or, The left positioning boss and the right positioning boss are detachably mounted on the base; The left-side positioning boss and the right-side positioning boss each include multiple ones. When each of the left-side positioning bosses and each of the right-side positioning bosses is installed on the base, the distance from the side of each left-side positioning boss near the right-side positioning boss to the bottom drill hole is different, and the distance from the side of each right-side positioning boss near the left-side positioning boss to the bottom drill hole is different.

[0020] In actual use, different left or right positioning bosses can be adjusted to accommodate elevator adjustment plates of different lengths, and the bottom drill holes of the main drill jig between the left and right positioning bosses can be accurately aligned.

[0021] In an optional embodiment, the two ends of the clamping beam are respectively provided with a first through hole; The clamping mounting part is provided on two opposite sides of the base and is located at both ends of a number of bottom drill holes arranged at intervals. The two clamping mounting parts are respectively provided with a second through hole, which is respectively provided with a first through hole. A positioning pin bushing is provided in the second through hole. The locking component includes a locking shaft portion and a limiting end cap disposed at the end of the locking shaft portion. The limiting end cap of the locking component is used to abut against the surface of the pressing beam or the base. After the locking shaft portion of the locking component passes through the first through hole, it engages with the locking pin bushing to lock the pressing beam and the base.

[0022] Drilling bushings improve guiding accuracy during drilling, reduce drill bit wear, and ensure smooth hole walls. In actual use, regularly check the locating pin bushings and main drill bushings for wear.

[0023] The beneficial effects of this invention are: This application provides a dedicated drilling fixture adapted to the elevator adjustment plate: A main drill jig corresponding to the main connecting hole of the hinge connecting plate is provided on the base, and a first positioning structure and a second positioning structure are provided to position the elevator adjustment plate in the x and y directions. A clamping beam passing through the elevator adjustment plate is provided to position it in the z direction, thus providing the elevator adjustment plate with an accurate and reliable positioning structure. When drilling the mounting holes for the elevator adjustment plate, the positional accuracy of the mounting holes is guaranteed, and hole position deviations are reduced. Furthermore, after the elevator adjustment plate is fixed by the drilling fixture, holes can be drilled sequentially, which improves drilling efficiency. Specific beneficial effects are as follows: (1) The first positioning structure is configured to cooperate with the abutment and pressing body adapted to the elevator adjustment piece, so as to achieve lateral (x-direction) positioning of the elevator adjustment piece. At the same time, the pressing body is provided with a side drilling template to drill holes on the side of the elevator adjustment piece, which is used to press the crossbeam so that the drill hole of the adjustment piece connecting end panel is positioned and the drill hole of the front end panel of the adjustment piece is also positioned.

[0024] (2) The second positioning structure achieves lateral (y-direction) positioning of the elevator adjustment plate by setting two positioning steps. The hole positioning pin can ensure the relative position accuracy of each hole for a second time. The fixing structure of the positioning pin bushing avoids the loosening of the hole positioning pin, which greatly improves the processing accuracy and consistency of the mounting hole, so that the drilling tooling provided in this application has accurate and reliable positioning.

[0025] (3) The clamping beam secures the parts to the base with locking parts, effectively preventing the parts from shifting during processing and ensuring processing quality.

[0026] (4) The tooling structure provided in this application is reasonably designed, easy to install and disassemble, and does not require the operator's experience for positioning, which shortens the processing preparation time and processing cycle and improves production efficiency. At the same time, the setting of the drilling bushing reduces the direct wear between the drill bit and the template, and the positioning pin bushing can avoid the wear between the positioning pin and the main drill template, thus extending the service life of the tooling. Attached Figure Description

[0027] Figure 1 This is a top view of the drilling fixture according to an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA; Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of BB; Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure of the C-C section; Figure 5 This is a side view of the drilling fixture according to an embodiment of this application. Figure 6 This is a schematic diagram of the axial structure of the base according to an embodiment of this application; Figure 7 yes Figure 6 A magnified structural diagram of D in the diagram; Figure 8 This is a schematic diagram of the connection between the elevator adjustment plate and the elevator adjustment plate in an embodiment of this application; Figure 9 This is a schematic diagram of the structure for drilling holes in the elevator adjustment plate using the drilling tooling of the embodiments of this application (corresponding to...). Figure 3 (The cutting position in the middle).

[0028] The labels for the attached figures are as follows: 1. Base; 11. Main drilling jig; 111. Bottom drilling jig hole; 112. Drill bushing; 12. Clamping mounting part; 2. First positioning structure; 21. Abutment; 22. Pressing body; 23. Baffle; 231. Pin; 232. Insert shaft; 24. Side drilling template; 241. Side drilling jig hole; 3. Second positioning structure; 31. Left positioning boss; 32. Right positioning boss; 4. Clamping crossbeam; 01. Bottom hole positioning hole; 5. Locking component; 51. Positioning pin bushing; 52. Locking shaft part; 53. Limiting end cover; 54. Limiting key; 541. First keyway; 542. Second keyway; 6. Hole positioning pin; 7. Elevator adjusting plate; 71. Adjusting plate connecting end panel; 72. Adjusting plate front end panel; 73. Adjusting plate rear end panel; 8. Hinge connecting plate; 81. Main body plate; 82. Bending support arm. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1-9As shown, this application provides a drilling fixture for mounting holes of elevator adjustment plates. The elevator adjustment plate 7 is used to connect with the hinge connecting plate 8. The elevator adjustment plate 7 is hollow and includes a rear end panel 73, a front end panel 72, and a connecting end panel 71 of the adjustment plate, which are triangular in structure. The connecting end panel 71 is used to cooperate with the main body plate 81 of the hinge connecting plate 8. The drilling fixture is used to drill holes in the elevator adjustment plate 7. The drilling fixture includes a base 1, a first positioning structure 2, a second positioning structure 3, a clamping crossbeam 4, and a locking member 5. The base 1 includes a main drill jig part 11 and a clamping mounting part 12 disposed on the side of the main drill jig part 11. The main drill jig part 11 has a plurality of bottom drill jig holes 111 arranged at intervals. The plurality of bottom drill jig holes 111 correspond to the main connecting holes of the hinge connecting plate 8. A drill bushing 112 is disposed in the bottom drill jig holes 111. The first positioning structure 2 and the second positioning structure 3 are respectively disposed on the periphery of the main drill jig 11. The first positioning structure 2 is used to position the elevator adjustment piece 7 in the x-direction, and the second positioning structure 3 is used to position the elevator adjustment piece 7 in the y-direction. The clamping beam 4 is located on the side of the main drill jig 11 where the first positioning structure 2 or the second positioning structure 3 is provided. The two ends of the clamping beam 4 are respectively detachably fixed to the clamping mounting part 12 of the base 1 by locking parts 5. The clamping beam 4 is used to position the elevator adjustment piece 7 in the z direction. When drilling is performed on the elevator adjustment plate 7 using a drilling tool, the adjustment plate connecting end panel 71 of the elevator adjustment plate 7, which is used to connect with the hinge connecting plate 8, cooperates with the main drill jig 11, and the clamping beam 4 passes through the inside of the elevator adjustment plate 7, so that the adjustment plate connecting end panel 71 of the elevator adjustment plate 7, which is used to connect with the hinge connecting plate 8, is limited and installed between the main drill jig 11 and the clamping beam 4.

[0031] This application provides a dedicated drilling fixture adapted to the elevator adjustment piece: A main drill jig 11 corresponding to the main connecting hole of the hinge connecting plate 8 is provided on the base 1, and a first positioning structure 2 and a second positioning structure 3 are provided to position the elevator adjustment piece 7 in the x and y directions, respectively. A clamping crossbeam 4 passing through the elevator adjustment piece 7 is provided to position the elevator adjustment piece 7 in the z direction, thus providing the elevator adjustment piece 7 with an accurate and reliable positioning structure. When drilling the mounting holes for the elevator adjustment piece 7, the positional accuracy of the mounting holes is guaranteed, and hole position deviations are reduced. Furthermore, after the elevator adjustment piece 7 is fixed by the drilling fixture, holes can be drilled sequentially, which improves drilling efficiency.

[0032] In one embodiment, it also includes a hole positioning pin 6, at least one of the plurality of bottom drill holes 111 is an initial bottom drill hole 111, and the clamping beam 4 also has a bottom hole positioning hole 401 corresponding to the initial bottom drill hole 111. After the elevator adjustment piece 7 has prepared the mounting hole corresponding to the initial bottom drill hole 111, the hole positioning pin 6 is used to be inserted into the drill bushing 112 of the initial bottom drill hole 111, the prepared mounting hole and the bottom hole positioning hole 401 in sequence, so as to provide a positioning reference for the preparation of the subsequent mounting hole.

[0033] Based on the basic positioning of the first positioning structure 2, the second positioning structure 3, and the clamping crossbeam 4, the hole positioning pin 6 provides double positioning for drilling the mounting hole, further ensuring the accuracy of the mounting hole.

[0034] When drilling holes in the skin of the elevator adjustment piece 7 using a drilling fixture, since the overall size of the elevator adjustment piece 7 is relatively long and the thickness of the skin is relatively small, on the one hand, the skin is pressed and limited by the base 1 and the clamping beam 4 to limit the skin from bending or displacement during the drilling process, thereby ensuring the drilling accuracy; on the other hand, by setting the bottom hole positioning hole 401 in the clamping beam 4, the hole positioning pin 6 is used to perform secondary positioning of the machined mounting hole, further improving the machining accuracy of the positioning hole.

[0035] In one embodiment, the hole positioning pin 6 is at least tightly connected to the bottom hole positioning hole 401.

[0036] In one embodiment, a drilling bushing 112 is provided on the bottom hole positioning hole 401, and the hole positioning pin 6 is located inside the drilling bushing 112 (tightly connected).

[0037] In one embodiment, the hole positioning pin 6 includes a pin shaft portion and a limiting portion connected to each other. The pin shaft portion is used to limit the engagement with the base 1 and the pressing crossbeam 4, and the limiting portion is used to prevent detachment.

[0038] In one specific embodiment, the pin portion is conical to facilitate locking with the drilled bushing 112.

[0039] In one embodiment, the first positioning structure 2 includes an abutment 21 and a pressing body 22, the abutment 21 and the pressing body 22 are respectively disposed on two opposite sides of the main drill jig part 11 and located on both sides of the bottom drill jig hole 111; The abutment 21 is used to cooperate with the rear end panel 73 of the elevator adjustment plate 7, and the pressing body 22 is used to cooperate with the front end panel 72 of the elevator adjustment plate 7.

[0040] In one embodiment, the pressing body 22 includes a baffle 23 and a side drilling template 24. The baffle 23 is mounted on the base 1, and the side drilling template 24 is mounted on the baffle 23. The side drilling template 24 has at least one side drilling hole 241, which corresponds to the side connection hole of the bent arm 82 of the hinge connecting plate 8, and a drilling bushing 112 is provided in the side drilling hole 241.

[0041] In one embodiment, the baffle 23 includes a first mounting part and a second mounting part. The baffle 23 is detachably connected to the base 1 through the first mounting part, and the baffle 23 is detachably connected to the side drilling template 24 through the second mounting part. The side-drill template 24 is designed to mate with the front end panel 72 of the adjustment piece, and the surface shape of the template is adapted to the surface shape of the front end panel 72 of the adjustment piece.

[0042] In one specific embodiment, the first mounting part is a pin 231 disposed at the bottom end of the baffle 23. The base 1 has a pin 231 hole, the pin 231 is inserted into the pin 231 hole and fixed by fasteners.

[0043] In one specific embodiment, the second mounting part is an insertion hole provided on the side wall of the baffle 23. The side drilling template 24 has an insertion shaft 232, which is inserted into the insertion hole and fixed by fasteners.

[0044] In one specific embodiment, there are two baffles 23, and the side drilling template 24 is disposed between the two baffles 23 and connected to the two baffles 23 respectively via insert shafts 232.

[0045] In one specific embodiment, the side drilling template 24 has two spaced-apart pins 231 on each side to prevent the pins 231 from rotating relative to the baffle 23.

[0046] In one specific embodiment, a fastener is also provided between the baffle 23 and the side drilling template 24. The fastener is provided between two pins 231 respectively provided on both sides of the side drilling template 24, for further fixing the side drilling template 24.

[0047] In one specific embodiment, the surface of the baffle 23 near the elevator adjustment piece 7 is also configured as an inclined structure adapted to the side drill template 24 to fit the shape of the front panel 72 of the adjustment piece.

[0048] In one embodiment, the side drilling template 24 includes multiple templates, and the shape of the surface of each side drilling template 24 that mates with the front end panel 72 of the adjustment piece is different, or the thickness of each side drilling template 24 is different.

[0049] In actual use, the practicality of the drilling tooling can be enhanced by replacing the side drilling template 24 with a different surface shape to accommodate the front panel 72 of the adjustment piece with a different surface shape, or by replacing the side drilling template 24 with a different thickness to accommodate the elevator adjustment piece 7 with a different width (the spacing between the rear panel 73 and the front panel 72 of the adjustment piece at the corresponding side mounting hole positions).

[0050] In one embodiment, the side drill template 24 is inclined toward the side opposite to the bottom drill hole 111; The side drill hole 241 has multiple holes, at least one of the multiple bottom drill holes 111 is the initial side drill hole 241, and the clamping crossbeam 4 also has a side hole positioning hole corresponding to the initial side drill hole 241. It also includes a hole positioning pin 6. After the elevator adjustment piece 7 has prepared the mounting hole corresponding to the initial side drill hole 241, the hole positioning pin 6 is used to be inserted into the drill bushing 112 of the initial side drill hole 241, the prepared mounting hole and the side hole positioning hole in sequence, so as to provide a positioning reference for the preparation of the subsequent mounting hole.

[0051] In one embodiment, the horizontal height of the surface of the clamping beam 4 on the side away from the base 1 is higher than the highest hole wall position of the side drill hole 241, so that the side hole positioning hole can correspond to the initial side drill hole 241.

[0052] In one embodiment, the clamping beam 4 is disposed in close contact with the front end panel 72 of the adjusting plate to provide a support surface for the front end panel 72 of the adjusting plate during drilling.

[0053] In another embodiment, the clamping beam 4 is provided with a support plate, and the support plate is provided with side hole positioning holes on the top and bottom.

[0054] In one embodiment, the abutment 21 is integrally formed with the main drill jig 11, and the abutment 21 and the main drill jig 11 form an arc-shaped abutment groove.

[0055] In actual use, the connection position between the rear end panel 73 of the adjustment piece and the connecting end panel 71 of the adjustment piece is arc-shaped, which is compatible with the arc-shaped abutment groove.

[0056] In one embodiment, the second positioning structure 3 includes a left positioning boss 31 and a right positioning boss 32 spaced apart on the surface of the base 1, wherein the left positioning boss 31 and the right positioning boss 32 are positioned from both ends of the elevator adjustment piece 7, respectively. The distance between the left positioning boss 31 and the right positioning boss 32 corresponds to the length of the elevator adjustment piece 7.

[0057] In actual use, the distance between the left positioning boss 31 and the right positioning boss 32 refers to the distance between the two opposite sides of the left positioning boss 31 and the right positioning boss 32.

[0058] In one embodiment, the left positioning boss 31 and the right positioning boss 32 are integrally formed with the main drill jig part 11.

[0059] In another embodiment, the left positioning boss 31 and the right positioning boss 32 are detachably mounted on the base 1; The left positioning boss 31 and the right positioning boss 32 each include multiple ones. When each left positioning boss 31 and each right positioning boss 32 is installed on the base 1, the distance from the side of each left positioning boss 31 near the right positioning boss 32 to the bottom drill hole 111 is different, and the distance from the side of each right positioning boss 32 near the left positioning boss 31 to the bottom drill hole 111 is different.

[0060] In actual use, different left positioning bosses 31 or right positioning bosses 32 are adjusted to accommodate elevator adjustment pieces 7 of different lengths, and the bottom drill hole 111 of the main drill jig part 11 between the left positioning bosses 31 and the right positioning bosses 32 can be accurately aligned.

[0061] In one embodiment, the two ends of the clamping beam 4 are respectively provided with first through holes; The clamping mounting part 12 is provided on two opposite sides of the base 1 and is located at both ends of a number of bottom drill holes 111 arranged at intervals. The two clamping mounting parts 12 are respectively provided with second through holes, which are respectively provided with first through holes. A positioning pin bushing 51 is provided in the second through hole. The locking member 5 includes a locking shaft portion 52 and a limiting end cap 53 detachably mounted on the end of the locking shaft portion 52. The limiting end cap 53 of the locking member 5 is used to abut against the surface of the pressing beam 4 or the base 1. The locking shaft portion 52 of the locking member 5 passes through the positioning pin bushing 51 in the second through hole and the positioning pin bushing 51 in the first through hole and locks with the positioning pin bushing 51 to achieve the locking of the pressing beam 4 and the base 1.

[0062] The drilling bushing 112 improves the guiding accuracy during drilling, reduces drill bit wear, and ensures the smoothness of the borehole wall. In actual use, the locating pin bushing 51 and the main drilling bushing 112 should be checked regularly for wear.

[0063] In one embodiment, a pin is provided at the end of the locking shaft portion 52 away from the limiting end cap 53 to prevent it from coming off.

[0064] In one embodiment, a limiting key 54 is also included. The surface of the positioning pin bushing 51 in the second through hole is provided with a first keyway 541, and the pressing mounting part 12 is provided with a second keyway 542. The limiting key 54 is disposed in the first keyway 541 and the second keyway 542 to prevent the positioning pin bushing 51 from slipping relative to the pressing mounting part 12.

[0065] In one embodiment, a positioning pin bushing 51 is also provided in the first through hole, and the locking shaft portion 52 of the locking member 5 passes through the positioning pin bushing 51.

[0066] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A drilling fixture for mounting holes of an elevator adjustment plate, wherein the elevator adjustment plate is hollow and is used to connect with a hinge connecting plate, characterized in that, The drilling fixture is used to drill holes in the elevator adjustment plate. The drilling fixture includes a base, a first positioning structure, a second positioning structure, a clamping crossbeam, and a locking component. The base includes a main drill jig and a clamping mounting part disposed on the side of the main drill jig. The main drill jig has a plurality of bottom drill jig holes arranged at intervals. The plurality of bottom drill jig holes correspond to the main connecting holes of the hinge connecting plate. Drilling bushings are disposed in the bottom drill jig holes. The first positioning structure and the second positioning structure are respectively disposed on the periphery of the main drill jig. The first positioning structure is used to position the elevator adjustment piece in the x-direction, and the second positioning structure is used to position the elevator adjustment piece in the y-direction. The clamping beam is located on the side of the main drill jig where the first positioning structure or the second positioning structure is provided. The two ends of the clamping beam are detachably fixed to the clamping mounting part of the base by the locking member. The clamping beam is used to position the elevator adjustment plate in the Z direction. When drilling is performed on the elevator adjustment plate using the drilling tool, the adjustment plate connecting end panel for connecting with the hinge connecting plate mates with the main drill jig. The clamping beam passes through the interior of the elevator adjustment plate, so that the adjustment plate connecting end panel for connecting with the hinge connecting plate is limited and installed between the main drill jig and the clamping beam.

2. The drilling fixture for mounting holes of elevator adjustment plates as described in claim 1, characterized in that, It also includes a hole positioning pin, at least one of the several bottom drill holes is an initial bottom drill hole, and the clamping crossbeam also has a bottom hole positioning hole corresponding to the initial bottom drill hole; After the mounting hole corresponding to the initial bottom drill hole is prepared, the hole positioning pin is used to be inserted sequentially into the drill bushing of the initial bottom drill hole, the prepared mounting hole and the bottom hole positioning hole, to provide a positioning reference for the subsequent preparation of the mounting hole.

3. The drilling fixture for mounting holes of elevator adjustment plates as described in claim 1, characterized in that, The first positioning structure includes a stop body and a pressing body, the stop body and the pressing body are respectively disposed on two opposite sides of the main drill jig and located on both sides of the bottom drill jig hole; The abutment is used to cooperate with the rear end panel of the elevator adjustment plate, and the pressing body is used to cooperate with the front end panel of the elevator adjustment plate. The rear end panel and the front end panel of the adjustment plate are located on both sides of the adjustment plate connecting end panel and form a triangular structure.

4. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 3, characterized in that, The pressing body includes a baffle and a side drilling template. The baffle is installed on the base, and the side drilling template is installed on the baffle. The side drilling template has at least one side drilling hole, which corresponds to the side connection hole of the hinge connecting plate bending arm, and a drilling bushing is provided in the side drilling hole.

5. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 4, characterized in that, The baffle includes a first mounting part and a second mounting part. The baffle is detachably connected to the base through the first mounting part, and the baffle is detachably connected to the side drilling template through the second mounting part. The side-drill template is used to mate with the front end panel of the adjustment piece, and the surface shape of the template is adapted to the surface shape of the front end panel of the adjustment piece.

6. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 5, characterized in that, The side drilling template includes multiple templates, and the shape of the surface of each side drilling template that mates with the front end panel of the adjustment piece is different, or the thickness of each side drilling template is different.

7. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 5, characterized in that, The side drilling template is inclined to the side away from the bottom drilling hole; The side drill hole has multiple holes, at least one of the multiple bottom drill holes is an initial side drill hole, and the clamping crossbeam also has a side hole positioning hole corresponding to the initial side drill hole; It also includes hole positioning pins. After the mounting holes corresponding to the initial side drill jig holes are prepared, the hole positioning pins are used to be inserted sequentially into the drill bushing of the initial side drill jig holes, the prepared mounting holes and the side hole positioning pins to provide positioning references for the preparation of subsequent mounting holes.

8. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 1, characterized in that, The second positioning structure includes a left positioning boss and a right positioning boss spaced apart on the surface of the base, wherein the left positioning boss and the right positioning boss are positioned from both ends of the elevator adjustment piece, respectively. The distance between the left positioning boss and the right positioning boss corresponds to the length of the elevator adjustment piece.

9. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 8, characterized in that, The left positioning boss and the right positioning boss are integrally formed with the main drill jig; Or, The left positioning boss and the right positioning boss are detachably mounted on the base; The left-side positioning boss and the right-side positioning boss each include multiple ones. When each of the left-side positioning bosses and each of the right-side positioning bosses is installed on the base, the distance from the side of each left-side positioning boss near the right-side positioning boss to the bottom drill hole is different, and the distance from the side of each right-side positioning boss near the left-side positioning boss to the bottom drill hole is different.

10. The drilling fixture for the elevator adjustment plate mounting hole as described in claim 1, characterized in that, The two ends of the clamping beam are respectively provided with a first through hole; The clamping mounting part is provided on two opposite sides of the base and is located at both ends of a number of bottom drill holes arranged at intervals. The two clamping mounting parts are respectively provided with a second through hole, which is respectively provided with a first through hole. A positioning pin bushing is provided in the second through hole. The locking component includes a locking shaft portion and a limiting end cap disposed at the end of the locking shaft portion. The limiting end cap of the locking component is used to abut against the surface of the pressing beam or the base. After the locking shaft portion of the locking component passes through the first through hole, it engages with the locking pin bushing to lock the pressing beam and the base.

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