Polishing process for metal ducts in aircraft engines

Abstract

The invention belongs to the technical field of metal tube polishing, in particular to a polishing process for metal conduits of aircraft engines, comprising the following steps: step 1, intermittently conveying the metal conduits to between the conveying mechanism and the polishing wheel in sequence through a feeding mechanism; step 2, a power motor drives the polishing wheel to rotate, and polishes the surfaces of a plurality of metal conduits at the same time; step 3, during the polishing process, the conveying mechanism drives the metal conduit to move downward along the circumference of the polishing wheel, and during the downward movement of the metal conduit, the conveying mechanism drives the metal conduit to move along the axial direction, so that the polishing wheel polishes from one end of the metal conduit to the other end; step 4, the polished metal conduit is discharged from the lower end of the conveying mechanism, and at the same time the feeding mechanism replenishes the upper end of the conveying mechanism; the invention can drive the metal conduit to move along the circumference of the polishing wheel through the rotation of the conveyor belt, so that the polishing wheel can polish a plurality of metal conduits at the same time, thereby improving the polishing efficiency of the metal conduit.

Description

Technical Field

[0001] The invention relates to the technical field of metal part polishing, in particular to a polishing process applied to a metal conduit of an aerospace engine. Background Art

[0002] Metal pipe fittings are a general term for parts that play the role of connection, control, direction change, diversion, sealing, support, etc. in pipeline systems. Existing pipe fittings are often divided into plastic pipe fittings, graphite pipe fittings and metal pipe fittings according to their materials. Metal pipe fittings need to be polished during the processing process. Polishing machines are often used to polish the outer walls of metal pipe fittings. Polishing refers to the use of mechanical, chemical or electrochemical effects to reduce the surface roughness of the workpiece to obtain a bright and smooth surface.

[0003] The main structure of the existing metal pipe polishing machine includes a polishing wheel and a guide wheel. During polishing, the metal pipe is placed between the polishing wheel and the guide wheel, and the surface of the metal pipe is polished by the polishing wheel. At the same time, the guide wheel rotates to drive the metal pipe to move axially, thereby achieving the function of automatic feeding. However, when the polishing mechanism is in use, only a single metal pipe can be polished at a time, and the polishing efficiency is slow. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a polishing process for metal conduits of aircraft engines. A conveying mechanism is provided to drive multiple metal tubes to move circumferentially along a polishing wheel, and the polishing wheel polishes multiple metal tubes at the same time, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical scheme of the present invention is as follows: the polishing process for the metal conduit of an aero-engine proposed by the present invention comprises the following steps:

[0006] Step 1: The metal conduit is intermittently transported to between the conveying mechanism and the polishing wheel in sequence through the unloading mechanism;

[0007] Step 2: The power motor drives the polishing wheel to rotate, and polishes the surfaces of multiple metal conduits at the same time;

[0008] Step 3: During the polishing process, the conveying mechanism drives the metal conduit to move downward along the circumference of the polishing wheel. During the downward movement of the metal conduit, the conveying mechanism drives the metal conduit to move in the axial direction, so that the polishing wheel polishes from one end of the metal conduit to the other end;

[0009] Step 4: The polished metal conduit is discharged from the lower end of the conveying mechanism, and the unloading mechanism replenishes the upper end of the conveying mechanism;

[0010] Among them, the polishing equipment used in the polishing process includes: a machine base, a power motor, a polishing wheel, a feeding mechanism and a conveying mechanism; the power motor is used to drive the polishing wheel to rotate; the conveying mechanism includes a pair of arc frames, the two arc frames are fixedly connected, the arc frames are arranged concentrically with the polishing wheel, and the arc frames are connected to conveyor belts. A number of conveyor rollers are connected between the two conveyor belts for axial movement of the metal pipe, and the conveyor rollers are evenly arranged along the length direction of the conveyor belt.

[0011] As a preferred technical solution of the present invention, a pair of transmission rollers are connected between the arc frames, the two transmission rollers are respectively arranged at the two ends of the arc frames, and a pair of transmission wheels respectively cooperating with the conveyor belts are connected to the two ends of the transmission rollers.

[0012] As a preferred technical solution of the present invention, a driven gear is fixedly connected to the surface of the transmission roller, a conveying motor is fixedly installed on the arc frame, and a driving gear meshing with the driven gear is connected to the rotating shaft of the conveying motor.

[0013] As a preferred technical solution of the present invention, the conveying mechanism includes a driving assembly for driving each conveying roller to rotate simultaneously, the driving assembly is arranged at one end of the arc-shaped frame, and the conveying rollers are connected by a transmission rope; the driving assembly includes an arc-shaped fixed frame, the two ends of the fixed frame are rotatably connected with driving wheels, and a driving belt is transmission-connected between the two driving wheels for driving the conveying rollers to rotate, one end of the conveying roller is coaxially fixedly connected with a roller cooperating with the driving belt, and a driving motor for driving the driving wheel to rotate is fixedly installed on the fixed frame.

[0014] As a preferred technical solution of the present invention, the fixing frame is fixedly connected to a bracket, the bracket is movably connected to a tensioning seat, the tensioning seat is rotatably connected to a tensioning wheel for tightening the drive belt, and an elastic mechanism is connected between the tensioning seat and the bracket.

[0015] As a preferred technical solution of the present invention, a ring-shaped groove is provided on the surface of the conveying roller, a rope pulley cooperating with the transmission rope is fixedly connected in the groove, and a limiting groove for limiting the transmission rope is provided on the surface of the rope pulley; a pair of connecting blocks are rotatably connected at both ends of the conveying roller, and the connecting blocks are fixedly connected to the conveyor belt.

[0016] As a preferred technical solution of the present invention, a plurality of limiting wheels for limiting the position of the conveyor belt are connected to the arc frame.

[0017] As a preferred technical solution of the present invention, the unloading mechanism includes a material box for vertically stacking metal tubes, a material guide plate is fixedly connected to the lower end of the material box, which is used to guide the metal tubes to the conveying mechanism, and a discharge port is provided on the side of the lower end of the material box, a lifting mechanism is fixedly connected above the discharge port, and a material blocking frame is connected to the lifting mechanism.

[0018] As a preferred technical solution of the present invention, the lower end of the guide plate is rotatably connected to a support frame, the support frame is connected to a pair of support wheels for supporting one end of the metal conduit, and a tension spring is fixedly connected between the support frame and the guide plate.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention is provided with an arc frame which is concentric with the polishing wheel, the arc frame is connected with an arc-shaped conveyor belt, the conveyor belt is connected with a plurality of conveyor rollers to limit the metal tube, the rotation of the conveyor belt can drive the plurality of metal tubes to move simultaneously along the circumference of the polishing wheel, so that the polishing wheel can polish the plurality of metal tubes at the same time, thereby improving the polishing efficiency of the metal tubes.

[0021] 2. The present invention connects a plurality of conveyor rollers between two conveyor belts, and the conveyor rollers are connected by transmission ropes. The driving assembly drives the plurality of conveyor rollers to rotate simultaneously, thereby driving the metal pipe to move axially, thereby achieving the purpose of automatic feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the polishing equipment proposed in the present invention.

[0023] Figure 2 It is a front view schematic diagram of the polishing device proposed by the present invention.

[0024] Figure 3 This is a schematic structural diagram of the conveying mechanism proposed in the present invention.

[0025] Figure 4 This is a schematic diagram from another angle of the conveying mechanism proposed by the present invention.

[0026] Figure 5 This is a schematic structural diagram of the conveying roller proposed in the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the drive assembly proposed in the present invention.

[0028] Figure 7 It is a structural schematic diagram of the material unloading mechanism proposed in the present invention.

[0029] Figure 8 It is a front view schematic diagram of the material unloading mechanism proposed by the present invention.

[0030] In the figure: 1, machine base; 2, power motor; 3, polishing wheel; 4, conveying mechanism; 41, arc frame; 42, transmission roller; 43, transmission wheel; 44, driving assembly; 441, fixed frame; 442, driving motor; 443, driving wheel; 444, driving belt; 445, tension wheel; 446, bracket; 447, elastic mechanism; 448, tensioning seat; 45, conveying roller; 451, connecting block; 452, roller; 453, groove; 454, rope pulley; 455, limiting groove; 46, transmission rope; 47, conveying motor; 48, driving gear; 49, driven gear; 410, conveyor belt; 411, limiting wheel; 5, unloading mechanism; 51, material box; 52, material guide plate; 53, material outlet; 54, lifting mechanism; 55, material blocking frame; 56, support frame; 57, support wheel; 58, tension spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Implementation: This embodiment discloses a polishing process for a metal conduit of an aerospace engine, comprising the following steps:

[0033] Step 1: The metal conduit is intermittently transported to between the conveying mechanism 4 and the polishing wheel 3 by the unloading mechanism 5;

[0034] Step 2: The power motor 2 drives the polishing wheel 3 to rotate, and polishes the surfaces of multiple metal conduits at the same time;

[0035] Step 3: During the polishing process, the conveying mechanism 4 drives the metal conduit to move downward along the circumference of the polishing wheel 3. During the downward movement of the metal conduit, the conveying mechanism 4 drives the metal conduit to move in the axial direction, so that the polishing wheel 3 polishes from one end of the metal conduit to the other end;

[0036] Step 4: The polished metal conduit is discharged from the lower end of the conveying mechanism 4, and the unloading mechanism 5 replenishes the upper end of the conveying mechanism 4;

[0037] Among them, Figure 1-Figure 8 As shown, the polishing equipment used in the above-mentioned polishing process includes: a machine base 1, a power motor 2, a polishing wheel 3, a material unloading mechanism 5 and a conveying mechanism 4; the power motor 2 drives the polishing wheel 3 to rotate through a belt line.

[0038] Figure 3-Figure 4As shown, the conveying mechanism 4 is arranged on one side of the polishing wheel 3, and the conveying mechanism 4 includes a pair of arc frames 41, the two arc frames 41 are fixedly connected, the arc frames 41 are arranged concentrically with the polishing wheel 3, the diameter of the circle where the arc frames 41 are located is larger than the diameter of the polishing wheel 3, and the arc frames 41 are connected to conveyor belts 410, and the arc frames 41 are connected to a plurality of limiting wheels 411 for limiting the conveyor belts 410, so that the conveyor belts 410 are also distributed in an arc shape, and a plurality of conveyor rollers 45 are connected between the two conveyor belts 410, and the conveyor rollers 45 are evenly arranged along the length direction of the conveyor belts 410, and the conveyor rollers 45 play a role in limiting the metal tube to prevent the metal tube from automatically falling, and also play a role in the next layer The metal tube is limited to the left and right to prevent the next layer of metal tube from tilting; the conveying roller 45 can drive the metal tube to rotate when it rotates. During polishing, the metal tube is placed between the conveying roller 45 and the polishing wheel 3, and the metal tube moves downward along the arc with the conveyor belt 410. During the movement, the metal tube is always in contact with the polishing wheel 3, and the polishing wheel 3 polishes the surface of the metal tube, so that the polishing wheel 3 can polish multiple metal tubes at the same time, and the axis of the conveying roller 45 is not parallel to the axis of the polishing wheel 3, and there is an angle of 2-5°, so that the conveying roller 45 applies an axial thrust to the metal tube when it rotates, which can drive the metal tube to move forward, thereby driving the metal tube to automatically feed, and the polishing wheel 3 can fully polish the metal tube.

[0039] Among them, a pair of transmission rollers 42 are connected between the arc frames 41, and the two transmission rollers 42 are respectively arranged at the two ends of the arc frames 41, and a pair of transmission wheels 43 respectively matched with the conveyor belts 410 are connected to the two ends of the transmission rollers 42; a driven gear 49 is fixedly connected to the surface of the transmission roller 42, and a conveying motor 47 is fixedly installed on the arc frame 41, and a driving gear 48 meshing with the driven gear 49 is connected to the rotating shaft of the conveying motor 47; the driving gear 48 is driven to rotate by the conveying motor 47, and then the transmission wheel 43 is driven to rotate, and the two conveyor belts 410 are driven to rotate synchronously at the same time.

[0040] Further, such as Figure 4 and Figure 5 As shown, the conveying rollers 45 are connected by a transmission rope 46, and a ring-shaped groove 453 is provided on the surface of the conveying roller 45, and a rope pulley 454 that cooperates with the transmission rope 46 is fixedly connected in the groove 453. There is sufficient friction between the rope pulley 454 and the transmission rope 46, and the transmission rope 46 drives the rope pulley 454 to rotate when it moves. The rope pulley 454 has the same diameter as the conveying roller 45, and a limiting groove 455 is provided on the surface of the rope pulley 454 for limiting the transmission rope 46 to prevent the transmission rope 46 from falling off; the transmission rope 46 is wound around the rope pulley 454 for one circle and then guided to the next rope pulley 454, so that when one conveying roller 45 rotates, it can drive other conveying rollers 45 to rotate at the same time; a pair of connecting blocks 451 are rotatably connected at both ends of the conveying roller 45, and the connecting blocks 451 are fixedly connected to the conveyor belt 410.

[0041] like Figure 6 As shown, the conveying mechanism 4 also includes a driving assembly 44, which is used to drive each conveying roller 45 to rotate simultaneously, and the driving assembly 44 is arranged at the lower end of the arc frame 41; the driving assembly 44 includes an arc-shaped fixed frame 441, and the two ends of the fixed frame 441 are rotatably connected with driving wheels 443, and a driving belt 444 is transmission-connected between the two driving wheels 443, which is used to drive the conveying roller 45 to rotate, wherein the driving belt 444 is concentrically arranged with the driving wheel 43 at the lower end, and one end of the conveying roller 45 is coaxially fixedly connected with a roller 452 cooperating with the driving belt 444, and a driving motor 44 for driving the driving wheel 443 to rotate is fixedly installed on the fixed frame 441. 2. The driving belt 444 is driven to rotate by the driving motor 442. When the roller 452 on the conveying roller 45 contacts the driving belt 444, the driving belt 444 will drive the roller 452 to rotate when it moves, and then drive the conveying roller 45 to rotate. When the conveying roller 45 rotates, it will drive other conveying rollers 45 to rotate together, so as to achieve the purpose of driving all metal tubes to move axially at the same time, and the axial movement speed of the metal tube can be adjusted by adjusting the rotation speed of the driving motor 442. Among them, the driving belt 444 can contact the two rollers 452 at the same time, and can drive the two conveying rollers 45 to rotate directly at the same time, so as to avoid the problem of the conveying roller 45 pausing to rotate.

[0042] Furthermore, a bracket 446 is fixedly connected to the fixed frame 441, a tensioning seat 448 is movably connected to the bracket 446, a tensioning wheel 445 for tightening the drive belt 444 is rotatably connected to the tensioning seat 448, and an elastic mechanism 447 is connected between the tensioning seat 448 and the bracket 446, the elastic mechanism 447 includes a pull rod and a spring, the pull rod is fixedly connected to the tensioning seat 448 and movably connected to the bracket 446, the spring is sleeved on the surface of the pull rod, and a limiting nut is connected to the end of the pull rod, and the spring is arranged between the limiting nut and the bracket 446; the elastic mechanism 447 applies a pulling force to the tensioning seat 448, so that the drive belt 444 remains in a tensioned state, and the roller 452 on the conveying roller 45 is always in contact with the inner drive belt 444, and the drive belt 444 and the roller 452 are tightly fitted and contacted through the elastic mechanism 447, ensuring that there is sufficient friction to drive the conveying roller 45 to rotate.

[0043] When the conveying mechanism 4 is working: the conveying motor 47 drives the conveying belt 410 to move slowly downward, and the metal tube moves downward along the arc with the conveying belt 410. During the movement, the metal tube is always in contact with the polishing wheel 3, and the polishing wheel 3 polishes the surface of the metal tube. At the same time, the unloading mechanism 5 continuously replenishes the upper end of the conveying mechanism 4, so that the polishing wheel 3 can polish multiple metal tubes at the same time; at the same time, the driving motor 442 drives the driving belt 444 to rotate. When the driving belt 444 moves, it will drive the roller 452 to rotate, and then drive the corresponding conveying roller 45 to rotate. When the conveying roller 45 rotates, it will drive other conveying rollers 45 to rotate together. When the conveying roller 45 rotates, it drives the metal tube to rotate, and at the same time drives the metal tube to move axially. The metal tube automatically feeds and moves forward until the polishing wheel 3 pairs polishes from one end of the metal tube to the other end, and the metal tube is finally discharged.

[0044] like Figure 7-Figure 8 As shown, the unloading mechanism 5 includes a material box 51 for vertically stacking metal tubes, a guide plate 52 is fixedly connected to the lower end of the material box 51, and is used to guide the metal tubes to the conveying mechanism 4, and a discharge port 53 is provided on the side of the lower end of the material box 51, and a lifting mechanism 54 is fixedly connected above the discharge port 53, and a blocking frame 55 is connected to the lifting mechanism 54; the lifting and lowering of the blocking frame 55 is controlled by the lifting mechanism 54, and then the discharge of the metal tube from the discharge port 53 is controlled. When the conveying mechanism 4 discharges a metal tube, the unloading mechanism 5 discharges a metal tube, and the metal tube slides through the guide plate 52 to between the conveying roller 45 at the upper end of the conveying mechanism 4 and the polishing wheel 3, and the lower end of the guide plate 52 is rotated and connected A support frame 56 is connected, and a pair of support wheels 57 are connected to the support frame 56 for supporting one end of the uppermost metal conduit, and a tension spring 58 is fixedly connected between the support frame 56 and the guide plate 52; the support frame 56 supports one end of the metal tube on the uppermost layer of the conveying mechanism 4 to prevent the metal tube from tilting. When the metal tube moves downward to the second layer with the conveying mechanism 4, the support frame 56 is driven to rotate downward and separate from the support frame 56. The support frame 56 rotates to its original position under the tension of the tension spring and continues to support the metal tube on the uppermost layer, while the center of gravity of the metal tube on the second layer is offset toward the conveying mechanism 4 relative to the center of gravity of the metal tube on the first layer, and no longer tilts.

[0045] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The polishing process for metal conduits of aircraft engines is characterized by: The following steps are involved: Step 1: The metal conduit is intermittently transported in sequence to between the transport mechanism (4) and the polishing wheel (3) through the unloading mechanism (5); Step 2: The power motor (2) drives the polishing wheel (3) to rotate, and polishes the surfaces of multiple metal conduits at the same time; Step 3: During the polishing process, the conveying mechanism (4) drives the metal conduit to move downward along the circumference of the polishing wheel (3). During the downward movement of the metal conduit, the conveying mechanism (4) drives the metal conduit to move along the axial direction, so that the polishing wheel (3) polishes from one end of the metal conduit to the other end; Step 4: The polished metal conduit is discharged from the lower end of the conveying mechanism (4), and at the same time, the unloading mechanism (5) replenishes the upper end of the conveying mechanism (4); The polishing equipment used in the polishing process comprises: a machine base (1), a power motor (2), a polishing wheel (3), a material unloading mechanism (5) and a conveying mechanism (4); the power motor (2) is used to drive the polishing wheel (3) to rotate; The conveying mechanism (4) comprises a pair of arc frames (41), the two arc frames (41) are fixedly connected, the arc frames (41) are arranged cocentrically with the polishing wheel (3), the arc frames (41) are connected to a conveyor belt (410), a plurality of conveyor rollers (45) are connected between the two conveyor belts (410) and are used to carry the metal conduit for axial movement, and the conveyor rollers (45) are evenly arranged along the length direction of the conveyor belt (410); and an angle of 2-5° is formed between the axis of the conveyor roller and the axis of the polishing wheel; A pair of transmission rollers (42) are connected between the arc-shaped frames (41), the two transmission rollers (42) are respectively arranged at two ends of the arc-shaped frames (41), and a pair of transmission wheels (43) respectively matched with the conveyor belt (410) are connected to the two ends of the transmission rollers (42); The conveying mechanism (4) further comprises a driving assembly (44) for driving the conveying rollers (45) to rotate simultaneously, the driving assembly (44) being arranged at one end of the arc-shaped frame (41), and the conveying rollers (45) are connected to each other by a transmission rope (46); the driving assembly (44) comprises an arc-shaped fixed frame (441), both ends of the fixed frame (441) are rotatably connected to driving wheels (443), a driving belt (444) is connected between the two driving wheels (443) for driving the conveying rollers (45) to rotate, one end of the conveying roller (45) is coaxially fixedly connected to a roller (452) cooperating with the driving belt (444), and a driving motor (442) for driving the driving wheels (443) to rotate is fixedly mounted on the fixed frame (441); The arc-shaped frame (41) is connected to a plurality of limiting wheels (411) for limiting the position of the conveyor belt (410).

2. The polishing process for metal conduits of aircraft engines according to claim 1 is characterized in that: A driven gear (49) is fixedly connected to the surface of the transmission roller (42), a conveying motor (47) is fixedly mounted on the arc frame (41), and a driving gear (48) meshing with the driven gear (49) is connected to the rotating shaft of the conveying motor (47).

3. The polishing process for metal conduits of aircraft engines according to claim 2 is characterized in that: The fixing frame (441) is fixedly connected to a bracket (446), the bracket (446) is movably connected to a tensioning seat (448), the tensioning seat (448) is rotatably connected to a tensioning wheel (445) for tightening the driving belt (444), and an elastic mechanism (447) is connected between the tensioning seat (448) and the bracket (446).

4. The polishing process for metal conduits of aircraft engines according to claim 3 is characterized in that: The surface of the conveying roller (45) is provided with an annular groove (453), a rope wheel (454) which cooperates with the transmission rope (46) for transmission is fixedly connected in the groove (453), and a limiting groove (455) for limiting the transmission rope (46) is provided on the surface of the rope wheel (454); a pair of connecting blocks (451) are rotatably connected at both ends of the conveying roller (45), and the connecting blocks (451) are fixedly connected to the conveying belt (410).

5. The polishing process for metal conduits of aircraft engines according to claim 4 is characterized in that: The unloading mechanism (5) comprises a material box (51) for vertically stacking metal conduits, a material guide plate (52) fixedly connected to the lower end of the material box (51) for guiding the metal conduits to the conveying mechanism (4), and a material discharge port (53) is provided on the side surface of the lower end of the material box (51), a lifting mechanism (54) is fixedly connected above the material discharge port (53), and a material blocking frame (55) is connected to the lifting mechanism (54).

6. The polishing process for metal conduits of aircraft engines according to claim 5 is characterized in that: The lower end of the guide plate (52) is rotatably connected to a support frame (56), the support frame (56) is connected to a pair of support wheels (57) for supporting one end of the metal conduit, and a tension spring (58) is fixedly connected between the support frame (56) and the guide plate (52).

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