CN107443327A - A kind of small-sized piston formula Air Fitter skill stand - Google Patents

Abstract

The invention relates to a small-sized piston-type aero-engine assembly process stand, which can freely rotate around each axis on three mutually perpendicular three-dimensional space coordinate axes X, Y, and Z, so that the crankshaft, cylinder body, and piston can be adjusted freely. , cylinder head and all engine body parts and accessories for free assembly. That is to say, the engine can be turned freely in the longitudinal, horizontal and vertical directions during the engine assembly process, so that the engine assembler can stay in place to operate, the operation is simpler and more convenient, and the labor intensity is effectively reduced while improving the assembly efficiency.

Description

A small piston-type aero-engine assembly process bench

technical field

The invention relates to the technical field of engine assembly, in particular to a small piston-type aero-engine assembly process bench.

Background technique

The production of small piston aero-engines is characterized by many varieties, small batches, and diverse accessories configurations. Generally, engine assembly is performed on assembly workbenches or pallets. Since the pallets and workbenches do not move during the assembly process, After a station completes the parts to be assembled, the engine must be turned over at a certain angle to proceed to the next station's assembly. Because there are many parts in the engine, there are many stations that need to be assembled, and the assembly process is more complicated. It is necessary to turn the engine to different positions several times to complete the assembly of different parts. On the one hand, the operation is cumbersome, the assembly efficiency is low, and the labor intensity is high. On the other hand, it is easy to cause the parts to collide with each other, causing damage to the parts, and also brings difficulties to the assembly process, resulting in low engine assembly efficiency and accuracy, which affects the product quality of the engine assembly. At the same time, it is not conducive to the cost control of production.

The Chinese patent with the authorized notification number CN 201783813 U discloses an engine assembly frame, which can complete all work from component assembly to assembly by cooperating with the engine installation and positioning tool, and the engine assembly work can be carried out in all directions. However, the structure of the engine assembly frame is complicated, and only a single degree of freedom can be turned over in situ. If the second degree of freedom is turned over, the whole platform needs to be turned by the bottom casters, and the third degree of freedom cannot be turned over. There are certain limitations of use.

Contents of the invention

The technical problem solved by the present invention is: in order to overcome the above-mentioned technical problems existing in the existing assembly work, the present invention provides a small-sized piston-type aero-engine assembly process bench. The process bench can realize multi-position and multi-functional positioning of engine parts, and realize the free turning of the engine in three degrees of freedom during the assembly process. The bumping of the parts reduces the difficulty of assembling the engine parts. Only one clamping is required, and the complete engine assembly can be completed conveniently and independently, and it is suitable for the assembly of various types of engines.

The technical solution of the present invention is: a small-sized piston-type aeroengine assembly process bench, including a base 1, a column 2, a first locking mechanism, a second locking mechanism, a connecting mechanism, a turntable mechanism 10 and an engine mount 9 One end of the column 2 is connected with the base 1, and the other end is fixedly connected with the connection mechanism, the connection mechanism is connected with the turntable mechanism 10, and the engine mount 9 is located in the turntable mechanism 10, and the two are coaxial and are bearing structures; the engine mount 9 can Rotate around its own axis and be locked by the second locking mechanism; the column 2 can rotate axially around its own axis and be locked by the first locking mechanism, and the column 2 drives the connecting mechanism and the turntable mechanism 10 around the axis of the column 2 Circumferential rotation; the axis of the connecting mechanism and the axis of the column 2 are perpendicular to each other, and the turntable mechanism 10 can rotate around the axis of the connecting mechanism.

A further technical solution of the present invention is: the connecting mechanism includes a crossbeam 5, a handle 6, a positioning lock mechanism 7 and an index plate 8; the crossbeam 5 is fixedly connected with the column 2, and the crossbeam 5 is provided with a handle 6 and a positioning lock mechanism 7; The crossbeam 5 and the turntable mechanism 10 are connected by an indexing plate 8, and the side of the indexing plate 8 close to the crossbeam 5 is evenly distributed with a number of grooves in the circumferential direction. The handle 6 is the operating rod of the positioning lock mechanism 7, and the positioning lock mechanism 7 is connected by bolts. On the crossbeam 5, the positioning lock mechanism 7 is a spring lever structure. When one end of the handle 6 is pressed down, the other end of the handle 6 is tilted. into the corresponding groove to complete the locking, and the positioning lock mechanism 7 is also equipped with an anti-mistouch mechanical switch 13 to lock the handle 6; the rotation of the index plate 8 drives the turntable mechanism 10 to rotate axially around the axis of the index plate 8 .

Invention effect

The technical effect of the present invention is that: the small-sized piston-type aero-engine assembly process platform provided by the present invention can make the engine turn over 360° freely in the longitudinal, transverse and vertical planes, and one engine can be completed in one station. The assembly work of all parts and components from component assembly to final assembly is not only compact in structure, but also simple and convenient in operation, which reduces the labor intensity of operation and improves work efficiency.

Description of drawings

Fig. 1 is the bench structural representation of small-sized piston type aeroengine assembly process of the present invention;

Fig. 2 is a top view of the present invention;

Fig. 3 is a front view of the present invention;

Fig. 4 is the right view of the present invention;

Fig. 5 is a structural schematic diagram of the turntable mechanism 10;

Fig. 6 is a schematic structural view of the indexing plate 8;

FIG. 7 is a structural schematic diagram of the beam 5 .

In the figure, 1—base, 2—column, 3—locking knob, 4—locking seat, 5—beam, 6—handle, 7—positioning lock mechanism, 8—indicating plate, 9—engine mounting seat, 10—turntable mechanism, 11—positioning mechanism, 12—positioning handle, 13—anti-mistouch mechanical switch.

detailed description

Referring to Fig. 1-Fig. 7, the technical solution of the present invention includes the following features: base 1, column 2, locking knob 3, locking seat 4, beam 5, handle 6, positioning lock mechanism 7, indexing plate 8, engine installation Seat 9, turntable mechanism 10, positioning mechanism 11, positioning handle 12, anti-mistouch mechanical switch 13. Wherein the locking knob 3 and the locking seat 4 form the first locking mechanism, and the positioning mechanism 11 and the positioning handle 12 form the second locking mechanism. The base 1 is the base of the assembly process bench of the present invention, which can be directly connected and fixed with common workbenches through four mounting holes. A vertical column 2 is installed on the base 1, the base 1 is coaxial with the column 2, and the column 2 is a rotatable shaft, which can rotate 360° on the axis of the base 1 relative to the base 1, and pass The locking knob 3 and the locking seat 4 of the first locking mechanism are positioned and locked. The locking method is a mechanical extrusion friction structure, that is, the locking seat 4 is fixedly connected to the column 2 and locked by rotation. Knob 3 makes the front end stud tighten or loosen the bearing pad type friction shoe between the interior of column 2 and base 1, so that column 2 and base 1 can be locked or rotated at any position in the 360° rotation plane. A crossbeam 5 perpendicular to the column 2 is installed on the upper end of the column 2, and the two are fixedly connected. A rotatable indexing plate 8 is installed on one end of the beam 5, and the other end of the indexing plate 8 is connected and fixed to the turntable mechanism 10.

Further, the rotation axis of the indexing plate 8 is the step shaft diameter on the end face of the beam 5, and the indexing plate 8 is provided with eight indexing positions, and the required station is positioned and locked by the handle 6 and the positioning lock mechanism 7, and the positioning The lock mechanism 7 is a spring lever type structure in a normally locked state. In the present embodiment, an anti-mistouch mechanical switch 13 is also provided. This switch is a pin spring type structure and is installed on the positioning lock mechanism 7 to lock the handle ( 6), in order to prevent mistakenly touching the handle (6) from causing mistaken overturning and harming personal safety. When the handle 6 is pressed down and shifted, the locking mechanism is in a released state, and the turntable mechanism 10 can be rotated 360° with the longitudinal axis of the indexing plate 8 as the axis, and the positioning lock mechanism 7 and the indexing plate can be connected by the positioning lock mechanism 7 as required by the work. 8 coordinates can be respectively locked on the eight stations that rotate 45° on the entire circumference for positioning, and the operation is performed through the push-down handle 6. The process is simple and reliable, and is conducive to the rapid assembly of engine parts.

Further, the turntable mechanism 10 also has the function of autorotation. The engine mount 9 is arranged in the turntable mechanism 10, and can rotate clockwise and counterclockwise 360° relative to the turntable mechanism 10. The engine mount 9 can be locked by the positioning mechanism 11 and the positioning handle 12 of the second locking mechanism. at any desired position during its rotation. The second locking mechanism is a mechanical constant lock structure, and the positioning pin is pushed by the compression spring installed in the positioning mechanism 11 to work. When the positioning pin is in normal state, it passes through the pin hole on the turntable mechanism 10 under the spring push and is placed in the engine. In the positioning groove of the mounting seat 9, the turntable mechanism 10 and the engine mounting seat 9 are fixed, and the positioning handle 12 fixedly connected with the positioning pin is pulled by an external force, and when the positioning pin is deviated from the positioning groove of the engine mounting seat 9, the engine mounting seat can be made 9 rotates in the turntable mechanism 10, and when the external force is removed, the positioning pin will self-recover the positioning and fixing function through the spring. Eight engine crankcase mounting threaded holes are provided on the engine mount 9, and every four threaded holes are on the same circumference, so as to adapt to the positioning pins or bolt hole positions for being installed on the aircraft on the engine crankcases of different specifications, which can be When the engine is assembled, it is directly connected with it, and it can also be connected through a transitional connecting rod or an adapter plate, so that the engine crankcase is fixed on the engine mount 9 .

As mentioned above, the small-sized piston-type aeroengine assembly process platform of the present invention can freely rotate around each axis on three mutually perpendicular three-dimensional space coordinate axes of X, Y, and Z, thereby the crankshaft, cylinder body, and piston can be rotated freely. , cylinder head and all engine body parts and accessories for free assembly. That is to say, the engine can be turned freely in the longitudinal, horizontal and vertical directions during the engine assembly process, so that the engine assembly personnel can stay in place to operate, the operation is simpler and more convenient, and the labor intensity is effectively reduced while improving the assembly efficiency. Placing the process bench of the present invention under different production conditions can not only realize assembly line operation, but also adapt to single-piece and small-batch independent operations, which is conducive to improving production efficiency, reducing assembly costs, and preventing assembly process failures. Parts collide.

Following embodiment is with reference to accompanying drawing 1-7.

As shown in Figure 1, the small-sized piston-type aeroengine assembly process bench of the present invention consists of a base 1, a column 2, a locking knob 3, a locking seat 4, a beam 5, a handle 6, a positioning lock mechanism 7, and a dial 8 , engine mounting seat 9, turntable mechanism 10, positioning mechanism 11, positioning handle 12, anti-mistouch mechanical switch 13 constitutes. The base 1 is the base of the assembly process platform of the present invention, which is a stepped cylindrical structure, and the disc-shaped structure at the lower end can be directly connected and fixed with other installation foundations such as a workbench through four installation holes, and the upper end is a cylinder as a column 2 rotary shafts and mounting bases. A vertical column 2 is installed on the base 1. The column 2 is a hollow shaft structure. The column 2 is coaxial with the base 1, and the column 2 is a rotatable shaft, which can be on the axis of the base 1 relative to the base 1. Carry out 360° rotation, and perform positioning and locking through the locking knob 3 and the locking seat 4. The locking mechanism adopts a mechanical extrusion friction shoe structure. The locking seat 4 is fixedly connected to the column 2 by bolts, and the locking seat 4. A locking knob 3 is set on the threaded hole in the middle. The front end of the stud of the locking knob 3 is a bearing pad type friction shoe, and the friction shoe is located between the interior of the column 2 and the base 1. The friction force generated by the tightening pressure of the locking knob 3 makes the column 2 and the base 1 can be positioned and locked at any position within the 360° rotation plane. When the column 2 needs to be rotated to a different station, the locking knob 3 is loosened, and the crossbeam 5 is pulled to rotate the column 2 to the desired station, and then the locking knob 3 is tightened to complete positioning and locking. The upper end of the column 2 is equipped with a beam 5 perpendicular to the column 2, and the two are fixedly connected by welding, wherein the beam 5 is an external square structure, and an internal step hole structure, and an indexing disk spindle is installed at one end of the step hole.

As shown in FIG. 1 , a rotatable indexing plate 8 is installed at the end of the beam 5 , and the outer end of the indexing plate 8 is connected and fixed with a turntable mechanism 10 . The center of rotation of the indexing plate 8 is the step axis protruding from the end face of the beam 5. The indexing plate 8 is provided with eight indexing positions, that is, there are eight evenly distributed indexing grooves on the outer circumference of the end face of the indexing plate 8. , Insert the handle 6 and the positioning lock mechanism 7 into the required station for positioning and locking in the indexing groove, the positioning lock mechanism 7 is in a normally locked state, and is provided with an anti-mistouch mechanical switch 13. When the handle 6 is pressed down and shifted, the locking mechanism is in a released state, and the turntable mechanism 10 can be rotated 360° along the central axis of the indexing plate 8 as the axis, and the positioning lock mechanism 7 and the indexing plate can be connected by the positioning lock mechanism 7 as required by the work. 8 coordinates can be respectively locked on the eight stations that rotate 45° on the entire circumference for positioning, and the operation is performed through the push-down handle 6. The process is simple and reliable, and is conducive to the rapid assembly of engine parts. The anti-mistouch mechanical switch 13 switch is a pin spring type structure, which is installed on the positioning lock mechanism 7. The specific position is shown in Figure 1, and is used to lock the handle 6, so as to prevent the mistouching of the handle 6 from causing mistaken overturning and harming personal safety.

As shown in Figure 1, the turntable mechanism 10 is connected with the index plate 8, and is relatively fixed with the index plate 8. Its structure is in the shape of a hollow disc, which is divided into two parts, the inner disc and the outer disc, and the inner disc is the engine. Mounting seat 9 is embedded in the outer disk, and this mechanism is also a bearing tray for engine assembly. Said engine mount 9 is arranged in the turntable mechanism 10, and itself also has autorotation function, and can carry out 360 ° of clockwise and counterclockwise rotation relative to turntable mechanism 10, and it can move the engine by positioning mechanism 11 and positioning handle 12. The mounting base 9 is locked at any desired position during its rotation. The locking mechanism is in the form of a constant lock. When the station needs to be rotated, just pull out the positioning handle 12 and then turn the engine mount 9 clockwise or counterclockwise to the required station, and then loosen the positioning handle 12. Auto lock. Eight engine crankcase mounting threaded holes are provided on the engine mount 9, and every four threaded holes are on the same circumference, so as to adapt to positioning pins or bolt hole positions used for installation on aircraft on engine crankcases of different specifications, It can be directly connected with the engine during assembly, or can be connected through a transitional connecting rod or an adapter plate, so as to fix the engine crankcase on the engine mount 9 .

As shown in Figures 2, 3, 4, 5, 6, and 7, in order to express more clearly, Figure 2 is a top view of the present invention, Figure 3 is a front view of the present invention, Figure 4 is a right view of the present invention, and Figure 5 is a turntable mechanism 10 Schematic diagram of the structure, FIG. 6 is a schematic diagram of the structure of the indexing plate 8, and FIG. 7 is a schematic diagram of the structure of the beam 5.

As mentioned above, the implementation process of the present invention realizes that the small-sized piston-type aeroengine can freely rotate around each axis on the three mutually perpendicular three-dimensional space coordinate axes of X, Y, and Z, so that the crankshaft, cylinder body, and piston can be adjusted. , cylinder head and all engine body parts and accessories for free assembly. During the engine assembly process, the engine can be turned freely in the longitudinal, horizontal, and vertical directions, so that the engine assembly personnel can stay in place and complete the entire assembly of the entire engine. The operation is simpler and more convenient. While improving assembly efficiency, Effectively reduces the labor intensity. Placing the process bench of the present invention under different production conditions can not only realize assembly line operation, but also adapt to single-piece and small-batch independent operations, which is conducive to improving production efficiency, reducing assembly costs, and preventing assembly process failures. Parts collide.

Claims (2)

1. A small-sized piston-type aeroengine assembly process bench is characterized in that it comprises a base (1), a column (2), a first locking mechanism, a second locking mechanism, a connecting mechanism, and a turntable mechanism (10) and the engine mount (9); one end of the column (2) is connected with the base (1), and the other end is fixedly connected with the connection mechanism, and the connection mechanism is connected with the turntable mechanism (10), and the engine mount (9) is located at the turntable mechanism (10 ), the two are coaxial and have a bearing structure; the engine mount (9) can rotate around its own axis and be locked by the second locking mechanism; the column (2) can rotate axially around its own axis and pass through the second locking mechanism. A locking mechanism is locked, and the column (2) drives the connection mechanism and the turntable mechanism (10) to rotate around the axis of the column (2) at the same time; the axis of the connection mechanism is perpendicular to the axis of the column (2), and the turntable mechanism (10) can rotate around the axis of the column (2). The axis of the connecting mechanism rotates. 2. A kind of small-sized piston type aero-engine assembly process bench as claimed in claim 1, is characterized in that, described connection mechanism comprises crossbeam (5), handle (6), positioning lock mechanism (7) and index plate (8); the crossbeam (5) is fixedly connected with the column (2), and the crossbeam (5) is provided with a handle (6) and a positioning lock mechanism (7); the crossbeam (5) and the turntable mechanism (10) pass through the indexing The disc (8) is connected, and the side of the indexing disc (8) close to the crossbeam (5) is evenly distributed with several grooves in the circumferential direction. The handle (6) is the operating rod of the positioning lock mechanism (7), and the positioning lock mechanism (7) passes through the bolt Connected to the beam (5), the positioning lock mechanism (7) is a spring lever structure. When one end of the handle (6) is pressed down, the other end of the handle (6) will be tilted up. At this time, turn the dial (8) to When the desired position is required, the other end of the handle (6) is snapped into the corresponding groove to complete locking, and the positioning lock mechanism (7) is also provided with an anti-mistouch mechanical switch 13 to lock the handle (6); 8) to drive the turntable mechanism (10) to rotate axially around the axis of the indexing disk (8).