阅读说明：本技术 用于航空发动机扇形块组合件装配用气动夹具及使用方法 (Pneumatic clamp for assembling aeroengine sector block assembly and using method ) 是由 李深亮 杨建利 刘伊梅 苏嘉明 于 2021-08-25 设计创作，主要内容包括：用于航空发动机扇形块组合件装配用气动夹具及使用方法,包括下平台,下平台上表面安装有限位块、导向块、气缸支座及垫板,限位块上安装有多个带有顶丝组件的拉框组件,安装于气缸支座上的气缸与转接轴一端连接,转接轴另一端与主摇臂连接,主摇臂一端与销轴转动安装,且销轴、导向块及限位块同圆心,小摇臂一端与主摇臂连接,小摇臂另一端安装有弹性压紧轮,小摇臂中部与主摇臂之间通过调节拉杆组件连接,主摇臂另一端端部设置有导块,沿着导块的运动轨迹设置有位于下平台上的支撑螺钉及支撑座。夹具的摆臂一次性的将带有蜂窝状结构的静子内环封严板组合件全部插入到扇形块焊接组件的U形槽口中,装配时间由人工操作的7～8分钟减少到2～3分钟。(The pneumatic clamp comprises a lower platform, a limiting block, a guide block, a cylinder support and a base plate are arranged on the upper surface of the lower platform, a plurality of drawing frame assemblies with jackscrew assemblies are arranged on the limiting block, a cylinder arranged on the cylinder support is connected with one end of a switching shaft, the other end of the switching shaft is connected with a main rocker arm, one end of the main rocker arm is rotatably arranged with a pin shaft, the guide block and the limiting block are concentric, one end of a small rocker arm is connected with the main rocker arm, an elastic pressing wheel is arranged at the other end of the small rocker arm, the middle of the small rocker arm is connected with the main rocker arm through an adjusting pull rod assembly, a guide block is arranged at the end part of the other end of the main rocker arm, and a support screw and a support seat which are positioned on the lower platform are arranged along the motion track of the guide block. The swing arm of the fixture is used for inserting the stator inner ring sealing plate assembly with the honeycomb structure into the U-shaped notch of the sector welding assembly at one time, and the assembling time is reduced to 2-3 minutes from 7-8 minutes of manual operation.)

1. The utility model provides a be used for aeroengine sector block sub-assembly to assemble pneumatic fixture, its characterized in that, includes platform, main rocking arm, little rocking arm, backing plate and cylinder support down, there are stopper, guide block, cylinder support and backing plate on the platform upper surface through bolt fixed mounting down, and the backing plate is used for supporting main rocking arm, a plurality of drawing frame subassemblies that have jackscrew subassembly are installed to logical inslot that the stopper lower surface was seted up, and jackscrew subassembly spiro union is on drawing frame subassembly, install the cylinder through the bolt on the cylinder support, the telescopic link end and the adapting shaft one end of cylinder are connected, have set gradually round pin shaft hole, slot hole, cylinder pinhole and through-hole on the main rocking arm, the adapting shaft other end passes through the bolt and cooperates with the slot hole on the main rocking arm, and round pin shaft hole and the round pin axle rotation of installing platform upper surface department down of main rocking arm one end through above that, and round pin axle, The guide block and the limiting block are arranged concentrically, one end of the small rocker arm is connected with a cylindrical pin hole of the main rocker arm through a cylindrical pin I, an elastic pressing wheel is mounted at the other end of the small rocker arm, the middle of the small rocker arm is connected with the main rocker arm through an adjusting pull rod assembly, the end part of the other end of the main rocker arm is provided with the guide block, and a supporting screw and a supporting seat which are located on the lower platform are arranged along the motion track of the guide block.

2. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: adjust the pull rod subassembly and include drag hook I, drag hook II and nut, I one end of drag hook and nut one end threaded connection, the through-hole cooperation on the I other end of drag hook and the little rocking arm, II one ends of drag hook and nut other end threaded connection, the through-hole cooperation on II other ends of drag hook and the main rocking arm.

3. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: the jackscrew assembly comprises a compression bolt and a cylindrical pin II, a through hole is formed in a nut of the compression bolt, and the cylindrical pin II is installed in the through hole; the compression bolt is M5-M8, and the compression stroke is 2-3 times of the screw pitch.

4. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: the pulling frame assembly comprises a lower pulling hook, a vertical plate, an upper pulling hook and a cylindrical pin III, the lower end of the vertical plate is fixedly provided with the lower pulling hook, the upper end of the vertical plate is rotatably provided with the upper pulling hook through the cylindrical pin III, and the center of the vertical plate is provided with a threaded hole for screwing a screw rod of the jackscrew assembly; the number of the pull frame assemblies is 2-3.

5. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: waist-shaped holes are formed in the cylinder support and the base plate and used for adjusting the positions of the cylinder support and the base plate on the lower platform.

6. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: the blind hole has been seted up to the guide block cylinder end, and the guide block passes through the blind hole suit on it on the main rocking arm, and through the screw fastening, the guide block is adjustable at the length on the main rocking arm, and the regulating variable is 0 ~ 3 mm.

7. A pneumatic clamp for the assembly of an aircraft engine sector assembly, according to claim 1, wherein: the telescopic quantity of the piston rod of the air cylinder is selected according to the assembly length of parts, the telescopic quantity of the piston rod of the air cylinder is 50-100 mm, and the diameter of the cylinder body of the air cylinder is 50-75 mm.

8. The method of using the pneumatic clamp for assembly of an aircraft engine segment assembly of claim 1, comprising the steps of:

when the fan-shaped block welding assembly is used, firstly, the fan-shaped block assembly is placed on the limiting block according to the technological requirements, then, the pulling frame assembly is installed, the pressing bolt in the jackscrew assembly is screwed to press the fan-shaped block assembly on the limiting block, and the position of the supporting screw is adjusted to realize auxiliary supporting of the fan-shaped block welding assembly; the stator inner ring sealing plate assembly is installed on the guide block according to the process requirements, the nut of the adjusting pull rod assembly is rotated to drive the small rocker arm to enable the elastic wheel to be pressed and cut without damaging the honeycomb, the positions of the guide block and the limiting pin are adjusted, the three-position four-way reversing valve is toggled to be opened and closed, and the cylinder retracts to drive the main rocker arm to complete assembly of parts.

Technical Field

The invention belongs to the technical field of manufacturing of aero-engines, and particularly relates to a pneumatic clamp for assembling an aero-engine fan-shaped block assembly and a using method of the pneumatic clamp.

Background

The sector assembly is the more common part structure of aeroengine high pressure compressor, the sector assembly comprises sector welding subassembly and stator inner ring obturating plate assembly, stator inner ring obturating plate assembly with honeycomb structure is whole to be inserted into the U-shaped notch of sector welding subassembly, because two subassemblies are formed through brazing by a plurality of sheet metal components, the size dispersity is big, the assembly difficulty, need stick up the limit among the manual assembly process, strike, processes such as blank pressing, size uniformity is poor after the assembly, there is the phenomenon of smashing the honeycomb when artifical hammering the assembly simultaneously.

Disclosure of Invention

The invention aims to provide a pneumatic clamp for assembling a fan-shaped block assembly of an aero-engine and a using method, wherein the stator inner ring sealing plate assembly with a honeycomb structure is completely inserted into a U-shaped notch of a fan-shaped block welding assembly at one time in a pneumatic propulsion mode, processes of edge warping, knocking, edge pressing and the like in a manual assembling process are omitted, the size consistency after assembling is poor, and the phenomenon that a honeycomb is damaged during manual hammering assembling is avoided; the problem of sector block welding assembly accurate positioning, quick compressing is solved.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pneumatic fixture for assembly of an aircraft engine sector assembly comprises a lower platform, a main rocker arm, a small rocker arm, a base plate and a cylinder support, wherein a limiting block, a guiding block, the cylinder support and the base plate are fixedly arranged on the upper surface of the lower platform through bolts, the limiting block and the cylinder support are arranged just right, the guiding block and the base plate are arranged just right, the base plate is used for supporting the main rocker arm, a plurality of pull frame assemblies with jackscrew assemblies are arranged in a through groove formed in the lower surface of the limiting block, the jackscrew assemblies are in screwed connection on the pull frame assemblies, a cylinder is arranged on the cylinder support through bolts, the tail end of a telescopic rod of the cylinder is connected with one end of a through connecting shaft, a pin hole, a long hole, a cylindrical pin hole and a through hole are sequentially formed in the main rocker arm, the other end of the through pin hole is matched with the long hole in the main rocker arm, one end of the main rocker arm is rotatably installed with a pin shaft installed on the upper surface of the lower platform through the pin hole on the main rocker arm, and round pin axle, guide block and stopper set up with the centre of a circle, and cylindric lock I is passed through to little rocking arm one end is connected with the cylindric pinhole of main rocking arm, and the elasticity pinch roller is installed to the little rocking arm other end, is connected through adjusting the pull rod subassembly between little rocking arm middle part and the main rocking arm, and main rocking arm other end tip is provided with the guide block, is provided with supporting screw and the supporting seat that is located down on the platform along the movement track of guide block, and supporting screw and supporting seat just right with the stopper.

Adjust the pull rod subassembly and include drag hook I, drag hook II and nut, I one end of drag hook and nut one end threaded connection, the through-hole cooperation on the I other end of drag hook and the little rocking arm, II one ends of drag hook and nut other end threaded connection, the through-hole cooperation on II other ends of drag hook and the main rocking arm.

The jackscrew assembly comprises a compression bolt and a cylindrical pin II, a through hole is formed in a nut of the compression bolt, and the cylindrical pin II is installed in the through hole; the compression bolt is M5-M8, and the compression stroke is 2-3 times of the screw pitch.

The pulling frame assembly comprises a lower pulling hook, a vertical plate, an upper pulling hook and a cylindrical pin III, the lower end of the vertical plate is fixedly provided with the lower pulling hook, the upper end of the vertical plate is rotatably provided with the upper pulling hook through the cylindrical pin III, and the center of the vertical plate is provided with a threaded hole for screwing a screw rod of the jackscrew assembly; the number of the pull frame assemblies is 2-3.

Waist-shaped holes are formed in the cylinder support and the base plate and used for adjusting the positions of the cylinder support and the base plate on the lower platform.

The blind hole has been seted up to the guide block cylinder end, and the guide block passes through the blind hole suit on it on the main rocking arm, and through the screw fastening, the guide block is adjustable at the length on the main rocking arm, and the regulating variable is 0 ~ 3 mm.

The telescopic quantity of the cylinder piston rod is selected according to the assembly length of parts, the telescopic quantity of the cylinder piston rod is 50-100 mm, and the diameter of the cylinder body of the cylinder is 50-75 mm.

The use method of the pneumatic clamp for assembling the aircraft engine segment assembly comprises the following steps:

when the fan-shaped block welding assembly is used, the fan-shaped block assembly is firstly placed on the limiting block according to the technological requirements, then the pulling frame assembly is installed, the pressing bolt in the jackscrew assembly is screwed to press the fan-shaped block assembly on the limiting block, and the position of the supporting screw is adjusted to realize auxiliary supporting of the fan-shaped block welding assembly. The stator inner ring sealing plate assembly is installed on the guide block according to the process requirements, and the nut of the adjusting pull rod assembly is rotated to drive the small rocker arm to enable the elastic wheel to tightly press and cut without damaging the honeycomb. The positions of the guide block and the limiting pin are adjusted, the three-position four-way reversing valve is switched on and off, and the cylinder retracts to drive the main rocker arm to complete assembly of parts.

The invention has the technical effects that:

in the in-service use process, the parts to be assembled are rapidly installed on the pneumatic fixture, the switch is toggled, the swing arm of the fixture is used for one time, the stator inner ring sealing plate assembly with the honeycomb structure is completely inserted into the U-shaped notch of the fan-shaped block welding assembly, the assembling time is reduced to 2-3 minutes from 7-8 minutes of manual operation, and the assembling quality and the stability of the product are both achieved through manual assembly.

Drawings

FIG. 1 is a top view of a pneumatic clamp of the present invention for assembly of an aircraft engine segment assembly;

FIG. 2 is a schematic view of a pull frame assembly of the present invention for use in a pneumatic clamp for assembly of an aircraft engine segment assembly;

FIG. 3 is a schematic view of a jackscrew assembly of the present invention for use in a pneumatic clamp for assembly of an aircraft engine segment assembly;

FIG. 4 is a schematic view of an adjustment draw bar assembly of the present invention for use in a pneumatic clamp for assembly of an aircraft engine segment assembly;

1-pin shaft, 2-main rocker arm, 3-transfer shaft, 4-bolt, 5-backing plate, 6-adjusting pull rod assembly, 7-guide block, 8-small rocker arm, 9-lower platform, 10-guide block, 11-limiting block, 12-supporting seat, 13-pulling frame assembly, 14-jackscrew assembly, 15-cylinder support, 16-elastic pressing wheel, 17-cylindrical pin I, 18-bolt, 19-pulling hook I, 20-pulling hook II, 21-nut, 22-pressing bolt, 23-cylindrical pin II, 24-lower pulling hook, 25-vertical plate, 26-upper pulling hook, 27-cylindrical pin III, 28-limiting pin and 29-supporting screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in figure 1, the pneumatic clamp for assembling the sector assembly of the aircraft engine comprises a lower platform 9, a main rocker arm 2, a small rocker arm 8, a base plate 5 and a cylinder support 15, wherein a limiting block 11, a guide block 10, the cylinder support 15 and the base plate 5 are fixedly arranged on the upper surface of the lower platform 9 through bolts 18, the limiting block 11 and the cylinder support 15 are arranged just opposite to each other, the guide block 10 and the base plate 5 are arranged just opposite to each other, a limiting pin 28 is arranged at one end, far away from the main rocker arm 2, of the base plate 6, the base plate 5 is used for supporting the main rocker arm 2, a plurality of pull frame assemblies 13 with push wire assemblies 14 are arranged in through grooves formed in the lower surface of the limiting block 11, the push wire assemblies 14 are screwed on the pull frame assemblies 13, the pull frame assemblies 13 have a quick-release function, the positioning and compressing efficiency of the sector assembly is improved, cylinders are arranged on the cylinder support 15 through bolts 18 to drive cylinder piston rods to generate tensile force, the assembly of the fan-shaped block assembly is driven to be carried out by a main rocker arm 2, a cylinder is connected with an oil-water separator through an air duct, a reversing valve is arranged on the air duct, the tail end of a telescopic rod of the cylinder is connected with one end of an adapter shaft 3, a pin shaft hole, a long hole, a cylindrical pin hole and a through hole are sequentially arranged on the main rocker arm 2, the other end of the adapter shaft 3 is matched with the long hole on the main rocker arm 2 through a pin 4, one end of the main rocker arm 2 is rotatably arranged with a pin shaft 1 arranged on the upper surface of a lower platform 9 through the pin shaft hole on the main rocker arm, the pin shaft 1, a guide block 10 and a limiting block 11 are arranged concentrically, one end of a small rocker arm 8 is connected with the cylindrical pin hole of the main rocker arm 2 through a cylindrical pin I17, an elastic pressing wheel 16 is arranged at the other end of the small rocker arm 8, the middle part of the small rocker arm 8 is connected with the main rocker arm 2 through an adjusting pull rod assembly 6, a guide block 7 is arranged at the other end part of the main rocker arm 2, a supporting screw 29 and a supporting seat 12 which are arranged on the lower platform 9 along the motion track of the guide block 7, the number of the supporting screws 29 is two, the supporting screws 29 and the supporting seat 12 are opposite to the limiting block 11, in the positioning part of the sector assembly, the positioning of the guide block 10 of the stator inner ring sealing plate assembly is of an arc groove structure, the stator inner ring sealing plate assembly is guided in the assembling process, the stator inner ring sealing plate assembly is compressed by adopting a structure of an elastic compression wheel 16 and a small rocker arm 8, the elastic compression wheel 16 ensures that the honeycomb is not crushed, and the small rocker arm 8 is adjusted by adopting an adjusting pull rod assembly 6; in the sector welding assembly positioning part, the main rocker arm 2 rotates around the pin shaft 1, the swing angle of the main rocker arm 2 is controlled by the limiting pin 28, the position of the limiting pin 28 is adjustable, and the installation depth of the stator inner ring sealing plate assembly is guaranteed by adjusting the position of the limiting pin 28.

As shown in fig. 4, the adjusting pull rod assembly 6 comprises a draw hook I19, a draw hook II 20 and a nut 21, one end of the draw hook I19 is in threaded connection with one end of the nut 21, the other end of the draw hook I19 is matched with a through hole in the small rocker arm 8, one end of the draw hook II 20 is in threaded connection with the other end of the nut 21, and the other end of the draw hook II 20 is matched with the through hole in the main rocker arm 2.

As shown in fig. 3, the jackscrew assembly 14 includes a hold-down bolt 22 and a cylindrical pin ii 23, a through hole is formed in a nut of the hold-down bolt 22, and the cylindrical pin ii 23 is installed in the through hole; the compression bolt 22 is M5-M8, and the compression stroke is 2-3 times of the thread pitch.

As shown in fig. 2, the pulling frame assembly 13 includes a lower pulling hook 24, a vertical plate 25, an upper pulling hook 26 and a cylindrical pin iii 27, the lower end of the vertical plate 25 is fixedly provided with the lower pulling hook 24, the upper end of the vertical plate 25 is rotatably provided with the upper pulling hook 26 through the cylindrical pin iii 27, and the center of the vertical plate 25 is provided with a threaded hole for screwing the screw rod of the jackscrew assembly 14; the number of the pull frame assemblies 13 is 2-3.

Waist-shaped holes are formed in the cylinder support 15 and the base plate 5 and used for adjusting the positions of the cylinder support 15 and the base plate 5 on the lower platform 9.

The blind hole has been seted up to 7 cylinder ends of guide block, and guide block 7 is through the blind hole suit on it on main rocking arm 2, and through the screw fastening, and guide block 7 is adjustable in length on main rocking arm 2, and the regulating variable is 0 ~ 3mm, guarantees to compress tightly the laminating of the entity section of end stator inner ring obturating plate subassembly, avoids weighing wounded the honeycomb terminal surface.

The telescopic quantity of the cylinder piston rod is selected according to the assembly length of parts, the telescopic quantity of the cylinder piston rod is 50-100 mm, and the diameter of the cylinder body of the cylinder is 50-75 mm.

The use method of the pneumatic clamp for assembling the aircraft engine segment assembly comprises the following steps:

when the device is used, firstly, the sector assembly is placed on the limiting block 11 according to the technological requirements, then the pulling frame assembly 13 is installed to hook the sector assembly, the pressing bolt 22 in the jackscrew assembly 14 is screwed to press the sector assembly on the limiting block 11, and the position of the supporting screw 29 is adjusted to realize auxiliary supporting of the sector welding assembly. The stator inner ring sealing plate assembly is arranged on the guide block 10 according to the process requirements, and the nut 21 of the adjusting pull rod assembly 6 is rotated to drive the small rocker arm 8 to enable the elastic pressing wheel 16 to tightly press and cut without damaging the honeycomb. The positions of the guide block 7 and the limiting pin 28 are adjusted, the three-position four-way reversing valve is switched on and off, and the cylinder retracts to drive the main rocker arm 2 to complete assembly of parts.

Example 1

Pneumatic clamp design for assembling three-stage fan-shaped block assembly

The inner circle radius of the three-stage fan-shaped block assembly is 415mm, and the assembly angle is 42 degrees.

According to the size given by a design drawing, the outer ring step surface, the positioning end and the end surface of the air inlet side of the fan-shaped block assembly are used as positioning surfaces, the inner sealing strip end is used as an auxiliary support, the number of the structures of the pull frame assembly 13 is 3, the included angle between every two pull frame assemblies is 18 degrees, the compression bolt 22 is M8, the movable gap of the pull frame assembly 13 in the through groove on the lower surface of the limiting block 11 is 3mm, and the compression bolt 22 can rotate for two circles to position and compress the fan-shaped block assembly; the stator inner ring sealing plate assembly is positioned in an arc groove structure, the stator inner ring sealing plate assembly is guided in the assembling process, the stator inner ring sealing plate assembly is compressed, an elastic compression wheel 16 and a small rocker arm 8 structure are adopted, the elastic compression wheel 16 ensures that honeycomb is not crushed, the small rocker arm 8 is tensioned by an adjusting pull rod assembly 6, a main rocker arm 2 rotates around a pin shaft 1, the adjusting amount of a guide block 7 relative to the main rocker arm 2 is 1.5mm, the solid section of the stator inner ring sealing plate assembly at the compression end is ensured to be attached, and the end face of the honeycomb is prevented from being crushed; the main rocker arm 2 rotates around the pin shaft 1, the swing angle of the main rocker arm 2 is controlled by the limiting pin 28, the position of the limiting pin 28 is adjustable, and the installation depth of the stator inner ring sealing plate assembly is ensured by adjusting the position of the limiting pin 28; the telescopic amount of the cylinder piston rod is selected according to the assembly length of parts, the telescopic amount of the cylinder piston rod is 100mm, and the diameter of the cylinder body is 75 mm.

Example 2

Pneumatic clamp design for assembling six-stage fan-shaped block assembly

The inner circle radius of the six-stage fan-shaped block assembly is 310mm, and the assembly angle is 32 degrees.

According to the size given by a design drawing, the outer ring step surface, the positioning end and the end surface of the air inlet side of the fan-shaped block assembly are used as positioning surfaces, the inner sealing strip end is used as an auxiliary support, the number of the pull frame assemblies 13 is 2, the included angle between every two pull frame assemblies is 16 degrees, the pressing bolt 22 is M6, the movable gap of the pull frame assemblies 13 in the through groove on the lower surface of the limiting block 11 is 2mm, and the pressing bolt 22 can rotate for two circles to position and press the fan-shaped block assembly; the stator inner ring sealing plate assembly is positioned in an arc groove structure, the stator inner ring sealing plate assembly is guided in the assembling process, the stator inner ring sealing plate assembly is compressed, an elastic compression wheel 16 and a small rocker arm 8 are adopted, the elastic compression wheel 16 is guaranteed not to crush honeycomb, the small rocker arm 8 is tensioned by an adjusting pull rod assembly 6, a main rocker arm 2 rotates around a pin shaft, the adjusting amount of a guide block 7 relative to the main rocker arm 2 is 1mm, the solid section of the stator inner ring sealing plate assembly at the compression end is guaranteed to be attached, and the end face of the honeycomb is prevented from being crushed; the main rocker arm 2 rotates around the pin shaft, the swing angle of the main rocker arm 2 is controlled by the limiting pin 28, the position of the limiting pin 28 is adjustable, and the installation depth of the stator inner ring sealing plate assembly is ensured by adjusting the position of the limiting pin 28; the telescopic amount of the cylinder piston rod is selected according to the assembly length of parts, the telescopic amount of the cylinder piston rod is 50mm, and the diameter of the cylinder body is 50 mm.