A tooling assembly for a hydraulic system block of an aircraft elevon actuator

Abstract

An assembly fixture for a hydraulic system assembly block of an aircraft elevator aileron actuator includes a first bend joint measuring frame, a first bend joint measuring frame mounting base, a second bend joint measuring frame, a second bend joint measuring frame mounting base, a bend joint port fixing assembly, and a measurement reference conversion assembly. The first bend joint measuring frame is a Z-shaped frame structure, fitted over the first bend joint, and assembled to the first bend joint via the first bend joint measuring frame mounting base and the bend joint port fixing assembly. The second bend joint measuring frame is an inverted V-shaped frame structure, fitted over the second bend joint, and assembled to the second bend joint via the second bend joint measuring frame mounting base and the bend joint port fixing assembly. The measurement reference conversion assembly is used to convert the dimensional measurement reference during assembly. This invention meets the dimensional and angular requirements for the assembly of pipe joints on the assembly block during aircraft maintenance, achieving the goal of ensuring aircraft maintenance quality and safe flight.

Description

Technical Field

[0001] This invention relates to an assembly fixture for an aircraft hydraulic system, and more particularly to an assembly fixture for an assembly block of an aircraft elevon actuator hydraulic system. Background Technology

[0002] As attached Figure 1 To be continued Figure 3 As shown, a modular component of an aircraft elevator aileron actuator hydraulic system includes a modular component base 1 and a set of pipe fittings mounted on the modular component base 1. The pipe fittings consist of four parts: a first elbow joint 2, a second elbow joint 3, a first straight joint 4, and a second straight joint 5. This modular component serves as a connecting and transitioning element in the aircraft elevator aileron actuator hydraulic system. The pipe fittings are connected to the aircraft elevator aileron actuator hydraulic system pipelines and the elevator aileron servo actuator hoses, respectively. Hydraulic oil enters the modular component through a high-pressure oil supply conduit, then enters the high-pressure chamber of the aileron actuator through the hoses, converting hydraulic energy into mechanical energy. The hydraulic energy then flows from the low-pressure chamber of the aileron actuator back to the fuselage through the hoses into the low-pressure circuit of the modular component.

[0003] During the assembly process of the above-mentioned modular components, due to the attachment Figure 2 The assembly dimensions L1 and L2 of the bend pipe joint are difficult to measure accurately. If the accuracy of these dimensions cannot be guaranteed, a gap will remain between the pipe joint and the base 1 of the assembly block. During operation, under the impact of hydraulic pulsation, the sealing ring between the pipe joint and the base will be squeezed out or even break, resulting in seal failure and hydraulic oil leakage. Furthermore, when the pipe joint is installed at the specified angle (according to assembly standards, see attached...), the gap will be further widened. Figure 3 If the plane I containing the center axes of the two sets of elbow joints is parallel to the plane II containing the center axes of the two sets of straight joints (with an angle of 0° between the two planes), the servo actuator hose connected to the pipe joint will collide with the skin of the servo cockpit structure. During flight, this part will generate high-frequency vibrations, and the hose will wear through at the point of collision, causing hydraulic oil leakage. When the above two types of hydraulic oil leakage occur and reach a certain leakage value, the aircraft hydraulic system alarm light will flash, the oil pressure will drop, and the hydraulic system will not be able to supply pressure normally. This will prevent the aircraft's landing gear, rudder, elevators, and other operating systems from providing normal power, leading to system control failure and seriously endangering flight safety. Summary of the Invention

[0004] This invention provides an assembly fixture for a hydraulic system assembly block of an aircraft elevator aileron actuator, which meets the assembly size and angle requirements of the pipe joints on the assembly block during aircraft maintenance, thereby ensuring the quality of aircraft maintenance and safe flight.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An assembly fixture for a hydraulic system assembly block of an aircraft elevator aileron actuator includes a first bent joint measuring frame, a first bent joint measuring frame mounting base, a second bent joint measuring frame, a second bent joint measuring frame mounting base, a bent joint parallelism measuring rod, a straight head parallelism measuring rod, a straight head parallelism measuring rod support, a bent joint port fixing assembly, and a measurement reference conversion assembly. The first bent joint measuring frame is a Z-shaped frame structure, fitted over the first bent joint, and assembled to the first bent joint via the first bent joint measuring frame mounting base and the bent joint port fixing assembly. The second bent joint measuring frame is an inverted V-shaped frame structure, fitted over the second bent joint, and assembled to the second bent joint via the second bent joint measuring frame mounting base and the bent joint port fixing assembly. The bent joint parallelism measuring rod is assembled to the top of the first and second bent joint measuring frames. The straight head parallelism measuring rod support is installed on the top of the two straight heads, and the straight head parallelism measuring rod is assembled to the two straight head parallelism measuring rod supports. The measurement reference conversion assembly is used to convert the dimensional measurement reference during the assembly process.

[0006] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator has a first bend joint through hole in the middle of the first bend joint measuring frame, a first bend joint parallelism measuring rod positioning groove at its top, and a positioning block at its bottom that cooperates with the fixing seat of the first bend joint measuring frame.

[0007] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator includes a first bend joint measuring frame mounting base with a first bend joint clearance groove and a set of first axial through holes around the first bend joint clearance groove for the measuring ruler to pass through; a first positioning slot matching the positioning block on the first bend joint measuring frame is provided on the bottom surface of the first bend joint measuring frame mounting base; and first fixing screw through holes are provided on both side walls of the first bend joint measuring frame mounting base, the first fixing screw through holes being notches that communicate with the bottom surface of the first bend joint measuring frame mounting base.

[0008] The aforementioned assembly tooling for the hydraulic system assembly block of the aircraft elevator aileron actuator has three sets of first axial through holes.

[0009] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator has a second bend joint through hole in the middle of the second bend joint measuring frame and a second bend joint parallelism measuring rod positioning groove at its top; the second bend joint measuring frame is assembled with the second bend joint measuring frame fixing seat through the positioning planes provided on its side wall and bottom.

[0010] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator includes a second bend joint measuring frame mounting base with a second bend joint clearance groove and a set of second axial through holes around the second bend joint clearance groove for the measuring ruler to pass through; a second positioning slot matching the side wall of the second bend joint measuring frame is provided on the front facade of the second bend joint measuring frame mounting base; and second fixing screw through holes are provided on both side walls of the second bend joint measuring frame mounting base, which are notches that communicate with the front facade of the second bend joint measuring frame mounting base.

[0011] The assembly tooling for the hydraulic system assembly block of the aircraft elevator aileron actuator has three sets of second axial through holes.

[0012] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator includes a positioning sleeve, an outer fixing sleeve, a positioning body, and an inner fixing sleeve. One end of the positioning sleeve is fitted onto the outside of the port of the elbow joint, and the other end passes through the corresponding elbow joint through hole on the first or second elbow joint measuring frame and mates with the outer fixing sleeve. The inner end of the positioning sleeve is an arc surface that matches the inner cavity of the elbow joint, with a conical surface in the middle and an inner hexagonal hole on the outer end face. The inner end of the positioning sleeve is fitted into the inner cavity of the elbow joint, and its conical surface mates with the conical hole at the port of the elbow joint. The inner fixing sleeve is fitted into the positioning sleeve, and the positioning body is pressed and fixed by its inner end face.

[0013] The aforementioned assembly tooling for the hydraulic system of the aircraft elevator aileron actuator has cut-off surfaces on the inner end arc surface of the positioning body along the central axis and at a 120-degree angle to the central axis, and alignment marks corresponding to the elbow joint are provided on the outer end of the positioning body.

[0014] The aforementioned assembly fixture for the hydraulic system of the aircraft elevator aileron actuator includes a reference conversion component comprising a reference conversion measuring rod, a reference conversion positioning sleeve, a reference conversion positioning block, an adjusting rod, and a locking screw. The reference conversion measuring rod is a hollow sleeve with a conical surface at one end, its inner hole being a stepped hole. An adjusting rod is screwed into one end of the inner hole and can be locked in place by the locking screw. An eccentric square hole for inserting a measuring scale is provided at the other end of the inner hole. A radial through hole is formed on the outer wall of the reference conversion measuring rod. The reference conversion positioning sleeve is threaded onto the outside of the reference conversion measuring rod and can be locked in place by the locking screw. During reference conversion operations, the reference conversion positioning block is inserted into the radial through hole on the reference conversion measuring rod.

[0015] This invention provides an assembly fixture for a hydraulic system assembly block of an aircraft elevator aileron actuator. It clamps and fixes two elbow joint workpieces by cooperating with a first elbow joint measuring frame and a first elbow joint measuring frame fixing seat, and a second elbow joint measuring frame and a second elbow joint measuring frame fixing seat, respectively. A measurement reference conversion component derives the distance between the intersection of the two central axes of the elbow joint and the reference plane. Therefore, during the assembly process, the assembly dimensions can be adjusted and controlled based on the derived reference dimensions to ensure that the assembly dimensions of the elbow joints on the assembly block meet the requirements of the assembly standard. This invention also ensures the assembly angle of the elbow joint by controlling the parallelism between the elbow joint parallelism measuring rod and the straight head parallelism measuring rod. Therefore, this invention satisfies the assembly dimension and angle requirements of the pipe joints on the assembly block during aircraft maintenance, achieving the goal of ensuring aircraft maintenance quality and safe flight. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the hydraulic system assembly block for the aircraft's elevator aileron actuator; Figure 2 yes Figure 1 K-direction view; Figure 3 yes Figure 2 Top view; Figure 4 This is a schematic diagram of the overall structure of the present invention; Figure 5 yes Figure 4 K-direction view; Figure 6 This is a schematic diagram of the measuring frame structure for the first bend joint; Figure 7 This is a schematic diagram of the structure of the measuring frame fixing base for the first bend joint; Figure 8 This is a schematic diagram of the measuring frame structure for the second bend joint; Figure 9 This is a schematic diagram of the fixing base structure of the second bend joint measuring frame; Figure 10 This is a schematic diagram of the assembly structure of the elbow joint, elbow joint measuring frame, and elbow joint port fixing assembly (taking the first elbow joint as an example). Figure 11 yes Figure 10 Exploded structure diagram; Figure 12 This is a schematic diagram of the assembly structure of the measurement reference conversion component; Figure 13 yes Figure 12 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 14 This is a schematic diagram illustrating the conversion principle of the internal reference dimensions of a bend joint (taking the first bend joint as an example). Figure 15This is a schematic diagram of the assembly structure of the elbow joint (taking the first elbow joint as an example) and the combination block base.

[0017] Explanation of each label in the diagram: 1 is the base of the assembly block; 2 is the first elbow joint; 3 is the second elbow joint; 4 is the first straight joint; 5 is the second straight joint; 6 is the measuring frame for the first bend joint, 6-1 is the through hole for the first bend joint, 6-2 is the positioning groove for the parallelism measuring rod of the first bend joint, and 6-3 is the positioning block; 7 is the first elbow joint measuring frame fixing seat, 7-1 is the first elbow joint clearance groove, 7-2 is the first axial through hole, 7-3 is the first positioning slot, and 7-4 is the first fixing screw through hole; 8 is the measuring frame for the second bend joint, 8-1 is the through hole for the second bend joint, 8-2 is the positioning groove for the parallelism measuring rod of the second bend joint, and 8-3 is the positioning plane; 9 is the second elbow joint measuring frame fixing seat, 9-1 is the second elbow joint clearance groove, 9-2 is the second axial through hole, 9-3 is the second positioning slot, 9-4 is the second fixing screw through hole, and 9-5 is the elastic hole groove. 10. Parallelism measuring rod for elbow joints; 11. Parallelism measuring rod for straight joints; 12. Support for the parallelism measuring rod for straight joints; 13 is the elbow joint port fixing component, 13-1 is the positioning sleeve, 13-2 is the outer fixing sleeve, 13-3 is the positioning body, 13-3-1 is the cut surface, 13-3-2 is the alignment mark, and 13-4 is the inner fixing sleeve. 14 is the measurement reference conversion assembly, 14-1 is the reference conversion measuring rod, 14-1-1 is the eccentric square hole, 14-2 is the reference conversion positioning sleeve, 14-3 is the adjusting rod, 14-4 is the reference conversion positioning block, and 14-5 is the locking screw. 15 is the pipe fitting positioning cap; 16 is the sealing gasket. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] See Figure 1. Figure 2 , Figure 3A modular component for a hydraulic system of an aircraft elevon aileron actuator is disclosed. It includes a modular component base 1 and a set of pipe fittings mounted on the base 1. The pipe fittings consist of four parts: a first elbow joint 2, a second elbow joint 3, a first straight joint 4, and a second straight joint 5. During aircraft maintenance, according to the original assembly requirements, the vertical distance from the intersection of the two central axes of the first elbow joint 2 to the upper reference plane of the modular component base should be L1, and the vertical distance from the intersection of the two central axes of the second elbow joint 3 to the upper reference plane of the modular component base should be L2. Furthermore, after assembly, the plane I containing the central axes of the first elbow joint 2 and the second elbow joint 3 should be parallel to the plane II containing the central axes of the first straight joint 4 and the second straight joint 5.

[0020] See Figure 4 , Figure 5 This invention provides an assembly fixture for a hydraulic system assembly block of an aircraft elevator aileron actuator. Its overall structure includes a first bent joint measuring frame 6, a first bent joint measuring frame fixing seat 7, a second bent joint measuring frame 8, a second bent joint measuring frame fixing seat 9, a bent joint parallelism measuring rod 10, a straight head parallelism measuring rod 11, a straight head parallelism measuring rod support 12, a bent joint port fixing assembly 13, and a measurement reference conversion assembly 14. The first bent joint measuring frame 6 has a Z-shaped frame structure. During assembly, it is fitted over the first bent joint 2 and assembled with the first bent joint 2 via the first bent joint measuring frame fixing seat 7 and the bent joint port fixing assembly 13. The second bent joint measuring frame 8 is inverted. The V-frame structure is fitted over the second elbow joint 3 during assembly. It is then assembled with the second elbow joint 3 via the second elbow joint measuring frame fixing seat 9 and the elbow joint port fixing assembly 13. The elbow joint parallelism measuring rod 10 is assembled with the top of the first elbow joint measuring frame 6 and the second elbow joint measuring frame 8. The straight head parallelism measuring rod support 12 is installed on the top of the two straight heads, and the straight head parallelism measuring rod 11 is assembled with the two straight head parallelism measuring rod supports 12. The measurement reference conversion assembly 14 is a measurement component used during assembly to derive the distance dimensions L1 and L2 between the intersection of the two central axes of the elbow joint and the assembly reference surface, thereby realizing the conversion of the measurement reference.

[0021] See Figure 6 , Figure 7The assembly fixture for the hydraulic system of the aircraft elevator aileron actuator described in this invention has a first bend joint through hole 6-1 in the middle of its first bend joint measuring frame 6, a first bend joint parallelism measuring rod positioning groove 6-2 at its top, and a positioning block 6-3 at its bottom that mates with the first bend joint measuring frame fixing seat 7. The first bend joint measuring frame fixing seat 7 of this invention has a first bend joint clearance groove 7-1, and three first axial through holes 7-2 are provided around the first bend joint clearance groove 7-1, through which a measuring ruler passes; a first positioning slot 7-3 matching the positioning block 6-3 on the first bend joint measuring frame 6 is provided on the bottom surface of the first bend joint measuring frame fixing seat 7; and first fixing screw through holes 7-4 are provided on both side walls of the first bend joint measuring frame fixing seat 7, the first fixing screw through holes 7-4 being notches that communicate with the bottom surface of the first bend joint measuring frame fixing seat.

[0022] See Figure 8 , Figure 9 The assembly fixture for the hydraulic system of the aircraft elevator aileron actuator described in this invention has a second bend joint measuring frame 8 with a second bend joint through hole 8-1 in the middle and a second bend joint parallelism measuring rod positioning groove 8-2 at its top. The second bend joint measuring frame 8 is assembled with the second bend joint measuring frame fixing seat 9 through positioning planes 8-3 provided on its side wall and bottom. The second bend joint measuring frame fixing seat 9 of this invention has a second bend joint clearance groove 9-1 and three second axial through holes 9-2 around the second bend joint clearance groove 9-1, through which a measuring ruler passes. The front surface of the second bend joint measuring frame fixing seat 9 has a second positioning slot 9-3 that matches the side wall of the second bend joint measuring frame 8. The two side walls of the second bend joint measuring frame fixing seat 9 have second fixing screw through holes 9-4, which are notches that communicate with the front surface of the second bend joint measuring frame fixing seat.

[0023] See Figure 10 , Figure 11The assembly tooling for the hydraulic system of the aircraft elevator aileron actuator of the present invention includes a bend joint port fixing component 13 comprising a positioning sleeve 13-1, an outer fixing sleeve 13-2, a positioning body 13-3, and an inner fixing sleeve 13-4. One end of the positioning sleeve 13-1 is fitted over the port of the bend joint, and the other end passes through the corresponding bend joint through hole on the first bend joint measuring frame 6 or the second bend joint measuring frame 8 to assemble with the outer fixing sleeve 13-2. The inner end of the positioning body 13-3 is an arc surface that matches the inner cavity of the bend joint. The lower part of the arc surface is provided with a cutting surface 13-3-1 along the central axis and at a 120-degree angle with the central axis, and an alignment mark 13-3-2 corresponding to the elbow joint is provided on the outer end of the positioning body. A conical surface is provided in the middle of the positioning body 13-3, and an inner hexagonal hole is provided on the outer end face. The inner end of the positioning body 13-3 is fitted into the inner cavity of the elbow joint, and its conical surface is fitted with the conical hole of the elbow joint port. The inner fixing sleeve 13-4 is fitted into the positioning sleeve 13-1, and the positioning body 13-3 is pressed and fixed by its inner end face.

[0024] See Figure 12 , Figure 13 The assembly tooling for the hydraulic system of the aircraft elevator aileron actuator described in this invention includes a measurement reference conversion component 14 comprising a reference conversion measuring rod 14-1, a reference conversion positioning sleeve 14-2, a reference conversion positioning block 14-4, an adjusting rod 14-3, and a locking screw 14-5. The reference conversion measuring rod 14-1 is a hollow sleeve with a conical surface at one end, and its inner hole is a stepped hole. The adjusting rod 14-3 is screwed into one end of its inner hole and locked in place by the locking screw 14-5. The other end of the inner hole has an eccentric square hole 14-1-1 for inserting a measuring scale. The distance from the bottom surface of the eccentric square hole 14-1-1 to the vertex of the conical surface of the reference conversion measuring rod 14-1 is L1 or L2. A radial through hole is opened on the outer wall of the reference conversion measuring rod 14-1; the reference conversion positioning sleeve 14-2 is fitted onto the outside of the reference conversion measuring rod 14-1 by means of threaded connection, and can be locked and fixed by locking screw 14-5; during the reference conversion operation, the reference conversion positioning block 14-4 is inserted into the radial through hole opened on the reference conversion measuring rod 14-1.

[0025] See Figures 1 to 15The assembly fixture for the hydraulic system assembly block of the aircraft elevator aileron actuator described in this invention is used to assemble the assembly block components during aircraft maintenance. It ensures that after assembly, the vertical distance from the intersection of the two central axes of the first bent joint 2 to the upper reference plane of the assembly block base is L1, and the vertical distance from the intersection of the two central axes of the second bent joint 3 to the upper reference plane of the assembly block base is L2. It also ensures that the plane I containing the central axes of the first bent joint 2 and the second bent joint 3, and the plane II containing the central axes of the first straight head 4 and the second straight head 5 are parallel. When assembling the assembly block components using the assembly fixture for the hydraulic system assembly block of the aircraft elevator aileron actuator described in this invention, firstly, the reference planes for the vertical distances L1 and L2 from the intersection of the two central axes of the first bent joint 2 and the second bent joint 3 to the upper reference plane of the assembly block base are exported using the measurement reference conversion component 14. Then, the reference dimensions that can be measured by a measuring ruler (as shown in the attached figure) are calculated based on the exported reference planes. Figure 12 , 13 (As shown in Figure 14), and then use this reference dimension as a standard to adjust and control the assembly dimensions. Taking the first bend joint 2 as an example, the specific operation steps are as follows: a. Insert the reference conversion positioning block 14-4 into the radial through hole of the reference conversion measuring rod 14-1, and then assemble the reference conversion measuring rod 14-1 with the adjusting rod 14-3, so that the inner end of the adjusting rod 14-3 is pressed against the reference conversion positioning block 14-4. Insert the measuring ruler into the eccentric square hole of the reference conversion measuring rod 14-1 and measure the distance between the top of the reference conversion measuring rod 14-1 and the inner end face of the adjusting rod 14-3. If the distance value measured at this time meets the assembly standard requirements (i.e., the measured value is L1), then fix the adjusting rod with the locking screw 14-5. If the distance value measured at this time does not meet the assembly standard requirements, replace the reference conversion positioning block 14-4 of different specifications until the distance value measured meets the assembly standard requirements, and then fix the adjusting rod 14-3 with the reference conversion measuring rod 14-1 with the locking screw 14-5. b. Place the reference conversion positioning sleeve 14-2 over the reference conversion measuring rod 14-1, and screw the reference conversion positioning sleeve 14-2 so that the end face of the reference conversion positioning sleeve 14-2 abuts against the positioning block 14-4. At this time, the distance between the tip of the conical surface of the reference conversion measuring rod 14-1 and the end face of the reference conversion positioning sleeve 14-2 is L1. Lock and fix the reference conversion positioning sleeve 14-2 and the reference conversion measuring rod 14-1 with the locking screw 14-5. c. Assemble the first elbow joint 2 with the elbow joint port fixing assembly 13 and the first elbow joint measuring frame 6, so that the alignment mark 13-3-2 of the positioning body 13-3 in the elbow joint port fixing assembly 13 is aligned with the alignment mark on the first elbow joint 2. At this time, the cut surface 13-3-1 at one end of the positioning body 13-3 is in the correct position. Figure 14 As shown, the first bend joint measuring frame fixing base 7 and the first bend joint measuring frame 6 are pre-assembled. d. Remove the positioning block 14-4 from the measurement reference conversion assembly 14, assemble the measurement reference conversion assembly 14 with the first elbow joint 2, and screw the reference conversion positioning sleeve 14-2 to drive the reference conversion measuring rod 14-1 to move axially. When the conical surface of the reference conversion measuring rod 14-1 is in contact with the cut surface 13-3-1 at one end of the positioning body 13-3, lock the reference conversion positioning sleeve 14-2 with the first elbow joint 2 with the locking screw 14-5. e. Tighten the pipe joint positioning cap 15 that mates with the first elbow joint 2 so that it contacts the upper end face of the reference conversion positioning sleeve 14-2. Use a measuring ruler to insert into each axial through hole 7-2 of the first elbow joint measuring frame fixing seat 7 to measure the distance B from the upper end face of the first elbow joint measuring frame fixing seat 7 to the upper end face of the pipe joint positioning cap 15. Record the specific data of dimension B as the new reference data. Remove the measurement reference conversion component 14. f. Assemble the first elbow joint 2 with the base 1 of the assembly block component, and adjust the assembly height of the first elbow joint 2 so that the distance from the upper end face of the first elbow joint measuring frame fixing seat 7 to the upper end face of the pipe joint positioning cap 15 is dimension B. g. Following the above operating steps, complete the assembly of the second bend joint 3 and the base 1 of the assembly block; h. Complete the assembly of the first direct head 4, the second direct head 5 and the combination block base 1, and then install the direct head parallelism measuring rod support 12 on the top of the two direct heads. i. The elbow joint parallelism measuring rod 10 is assembled with the top of the first elbow joint measuring frame 6 and the second elbow joint measuring frame 8, and the straight head parallelism measuring rod 11 is assembled with the two straight head parallelism measuring rod supports 12. j. Loosen the pipe joint positioning cap 15, adjust the assembly angle of the first elbow 2 and the second elbow 3 so that the elbow parallelism measuring rod 10 is parallel to the straight head parallelism measuring rod 11. Measure the distance from the upper end face of the elbow measuring frame fixing seat 7 to the upper end face of the pipe joint positioning cap 15 again, and adjust the assembly height of the elbow to ensure that the distance from the upper end face of the elbow measuring frame fixing seat 7 to the upper end face of the pipe joint positioning cap 15 is B. k. Remove the assembly tooling for the hydraulic system assembly block of the aircraft elevator aileron actuator and complete the assembly of the pipe joint on the assembly block.

Claims

1. A tooling assembly for a hydraulic system block of an aircraft elevator aileron actuator, characterized in that: It includes a first bent joint measuring frame (6), a first bent joint measuring frame fixing seat (7), a second bent joint measuring frame (8), a second bent joint measuring frame fixing seat (9), a bent joint parallelism measuring rod (10), a straight head parallelism measuring rod (11), a straight head parallelism measuring rod support (12), a bent joint port fixing assembly (13), and a measurement reference conversion assembly (14); the first bent joint measuring frame (6) is a Z-shaped frame structure, which is fitted outside the first bent joint (2), and is assembled with the first bent joint (2) through the first bent joint measuring frame fixing seat (7) and the bent joint port fixing assembly (13); the second bent joint measuring frame (8 ... first bent joint port fixing assembly (13); the second bent joint measuring frame (8) is a Z-shaped frame structure, which is fitted outside the first bent joint (2), and is assembled with the first bent joint (2) through the first The measuring frame (8) is an inverted V-shaped frame structure, which is fitted over the second elbow joint (3). It is assembled with the second elbow joint (3) through the second elbow joint measuring frame fixing seat (9) and the elbow joint port fixing assembly (13). The elbow joint parallelism measuring rod (10) is assembled with the top of the first elbow joint measuring frame (6) and the second elbow joint measuring frame (8). The straight head parallelism measuring rod support (12) is installed on the top of the two straight heads. The straight head parallelism measuring rod (11) is assembled with the two straight head parallelism measuring rod supports (12). The measurement reference conversion assembly (14) is used to realize the conversion of the dimension measurement reference during the assembly process. The measurement reference conversion assembly (14) includes a reference conversion measuring rod (14-1), a reference conversion positioning sleeve (14-2), a reference conversion positioning block (14-4), an adjusting rod (14-3), and a locking screw (14-5). The reference conversion measuring rod (14-1) is a hollow sleeve with a conical surface at one end, and its inner hole is a stepped hole. The adjusting rod (14-3) is screwed into one end of its inner hole, and the adjusting rod (14-3) is locked and fixed by the locking screw (14-5). The other end of the hole is provided with an eccentric square hole (14-1-1) for inserting a measuring ruler, and a radial through hole is opened on the outer wall of the reference conversion measuring rod (14-1); the reference conversion positioning sleeve (14-2) is fitted on the outside of the reference conversion measuring rod (14-1) by a threaded connection and can be locked and fixed by a locking screw (14-5); during the reference conversion operation, the reference conversion positioning block (14-4) is inserted into the radial through hole opened on the reference conversion measuring rod (14-1); The specific operating steps are as follows: a. Insert the reference conversion positioning block (14-4) into the radial through hole of the reference conversion measuring rod (14-1), and then assemble the reference conversion measuring rod (14-1) with the adjusting rod (14-3) so that the inner end of the adjusting rod (14-3) is pressed against the reference conversion positioning block (14-4). Insert the measuring ruler into the eccentric square hole of the reference conversion measuring rod (14-1) and measure the distance between the top of the reference conversion measuring rod (14-1) and the inner end face of the adjusting rod (14-3). If the distance value measured at this time meets the assembly standard requirements (i.e., the measured value is L1), then fix the adjusting rod with the locking screw (14-5). If the distance value measured at this time does not meet the assembly standard requirements, replace the reference conversion positioning block (14-4) of different specifications until the distance value measured meets the assembly standard requirements, and then fix the adjusting rod (14-3) with the reference conversion measuring rod (14-1) with the locking screw (14-5). b. Place the reference conversion positioning sleeve (14-2) over the reference conversion measuring rod (14-1), and screw the reference conversion positioning sleeve (14-2) so that the end face of the reference conversion positioning sleeve (14-2) abuts against the positioning block (14-4). At this time, the distance between the tip of the conical surface of the reference conversion measuring rod (14-1) and the end face of the reference conversion positioning sleeve (14-2) is L1. Lock the reference conversion positioning sleeve (14-2) and the reference conversion measuring rod (14-1) with the locking screw (14-5). c. Assemble the first elbow joint (2) with the elbow joint port fixing assembly (13) and the first elbow joint measuring frame (6), so that the alignment mark 13-3-2 of the positioning body 13-3 in the elbow joint port fixing assembly (13) is opposite to the alignment mark on the first elbow joint (2). At this time, the cut surface (13-3-1) at one end of the positioning body (13-3) is in the state shown in Figure 14. Pre-assemble the first elbow joint measuring frame fixing seat 7 with the first elbow joint measuring frame (6). d. Remove the positioning block 14-4 from the measurement reference conversion assembly 14, assemble the measurement reference conversion assembly 14 with the first elbow joint 2, and screw the reference conversion positioning sleeve 14-2 to drive the reference conversion measuring rod 14-1 to move axially. When the conical surface of the reference conversion measuring rod 14-1 is in contact with the cut surface 13-3-1 at one end of the positioning body 13-3, lock the reference conversion positioning sleeve 14-2 with the first elbow joint 2 with the locking screw 14-5. e. Tighten the pipe joint positioning cap (15) that mates with the first elbow joint (2) so that it contacts the upper end face of the reference conversion positioning sleeve (14-2). Insert a measuring ruler into each axial through hole (7-2) of the first elbow joint measuring frame fixing seat (7) to measure the distance B from the upper end face of the first elbow joint measuring frame fixing seat (7) to the upper end face of the pipe joint positioning cap (15). Record the specific data of dimension B as the new reference data. Remove the measurement reference conversion component (14). f. Assemble the first elbow joint (2) with the base (1) of the assembly block component, and adjust the assembly height of the first elbow joint (2) so that the distance from the upper end face of the first elbow joint measuring frame fixing seat (7) to the upper end face of the pipe joint positioning cap (15) is dimension B. g. Following the above operating steps, complete the assembly of the second bend joint (3) and the base (1) of the assembly block; h. Complete the assembly of the first direct head (4), the second direct head (5) and the combination block base (1), and then install the direct head parallelism measuring rod support (12) on the top of the two direct heads; i. The elbow joint parallelism measuring rod (10) is assembled with the top of the first elbow joint measuring frame (6) and the second elbow joint measuring frame (8), and the straight head parallelism measuring rod (11) is assembled with the two straight head parallelism measuring rod supports (12); j. Loosen the pipe joint positioning cap (15), adjust the assembly angle of the first elbow joint (2) and the second elbow joint (3) so that the elbow joint parallelism measuring rod (10) is parallel to the straight head parallelism measuring rod (11), measure the distance from the upper end face of the elbow joint measuring frame fixing seat (7) to the upper end face of the pipe joint positioning cap (15) again, adjust the assembly height of the elbow joint, and ensure that the distance from the upper end face of the elbow joint measuring frame fixing seat 7 to the upper end face of the pipe joint positioning cap (15) is B; k. Remove the assembly tooling for the hydraulic system assembly block of the aircraft elevator aileron actuator and complete the assembly of the pipe joint on the assembly block.

2. The assembly fixture for the hydraulic system assembly block of the aircraft elevator aileron actuator according to claim 1, characterized in that: The first bend joint measuring frame (6) has a first bend joint through hole (6-1) in the middle, a first bend joint parallelism measuring rod positioning groove (6-2) at its top, and a positioning block (6-3) at its bottom that cooperates with the first bend joint measuring frame fixing seat (7).

3. The assembly fixture for the hydraulic system block of the aircraft elevator aileron actuator according to claim 2, characterized in that: The first elbow measuring frame fixing seat (7) is provided with a first elbow avoidance groove (7-1), and a set of first axial through holes (7-2) are provided around the first elbow avoidance groove (7-1). The first axial through holes (7-1) are used for the measuring ruler to pass through. The bottom surface of the first elbow measuring frame fixing seat (7) is provided with a first positioning slot (7-3) that matches the positioning block (6-3) on the first elbow measuring frame (6). The two side walls of the first elbow measuring frame fixing seat (7) are provided with first fixing screw through holes (7-4). The first fixing screw through holes (7-4) are notches that communicate with the bottom surface of the first elbow measuring frame fixing seat.

4. The assembly fixture for the hydraulic system assembly block of the aircraft elevator aileron actuator according to claim 3, characterized in that: The number of the first axial through holes (7-2) is three.

5. The assembly tooling for the hydraulic system block of the aircraft elevator aileron actuator according to claim 4, characterized in that: The second elbow measuring frame (8) has a second elbow through hole (8-1) in the middle and a second elbow parallelism measuring rod positioning groove (8-2) on its top; the second elbow measuring frame (8) is assembled with the second elbow measuring frame fixing seat (9) through the positioning plane (8-3) set on the side wall and its bottom.

6. The assembly fixture for the hydraulic system block of the aircraft elevon actuator according to claim 5, characterized in that: The second elbow measuring frame fixing seat (9) is provided with a second elbow relief groove (9-1), and a set of second axial through holes (9-2) are provided around the second elbow relief groove (9-1). The second axial through holes (9-2) are used for the measuring ruler to pass through. The front facade of the second elbow measuring frame fixing seat (9) is provided with a second positioning slot (9-3) that matches the side wall of the second elbow measuring frame (8). The two side walls of the second elbow measuring frame fixing seat (9) are provided with second fixing screw through holes (9-4). The second fixing screw through holes (9-4) are notches that communicate with the front facade of the second elbow measuring frame fixing seat.

7. The assembly fixture for the hydraulic system block of the aircraft elevon actuator according to claim 6, characterized in that: The number of the second axial through holes (9-2) is three.

8. The assembly tooling for the hydraulic system block of the aircraft elevon actuator according to claim 2 or 5, characterized in that: The elbow joint port fixing assembly (13) includes a positioning sleeve (13-1), an outer fixing sleeve (13-2), a positioning body (13-3), and an inner fixing sleeve (13-4). One end of the positioning sleeve (13-1) is fitted outside the port of the elbow joint, and the other end passes through the corresponding elbow joint through hole on the first elbow joint measuring frame (6) or the second elbow joint measuring frame (8) and is assembled with the outer fixing sleeve (13-2). The inner end of the positioning body (13-3) is an arc surface that matches the inner cavity of the elbow joint, and a conical surface is provided in the middle. The outer end face is provided with an internal hexagonal hole. The inner end of the positioning body (13-3) is fitted in the inner cavity of the elbow joint, and its conical surface is fitted with the conical hole of the elbow joint port. The inner fixing sleeve (13-4) is fitted in the positioning sleeve (13-1) and the positioning body (13-3) is pressed and fixed by its inner end face.

9. The assembly tooling for the hydraulic system block of the aircraft elevator aileron actuator according to claim 8, characterized in that: A cutting surface (13-3-1) is provided on the inner end arc surface of the positioning body (13-3) along the central axis and at a 120-degree angle with the central axis, and an alignment mark (13-3-2) corresponding to the elbow joint is provided on the outer end of the positioning body.

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