Automatic assembling device for aviation tiny parts

Abstract

The invention relates to the technical field of automatic assembly devices for parts, in particular to an automatic assembly device for aviation tiny parts, which comprises a base, an actuating mechanism is mounted on one side of the top surface of the base, a clamping and centering assembly is arranged on the other side of the top surface of the base, and a feeding mechanism is detachably mounted on the clamping and centering assembly. An elastic piece and a fixing ring are arranged in a fixing cylinder, and spiral driving teeth and spiral driving grooves on a driving rod are matched, so that the axial displacement of a sliding sleeve is converted into the rotating motion of the driving rod, a complex motor driving rotating structure is not needed, the structure is simple, the operation is convenient, and the practicability is high. The driving rod has torsional moment and can drive the small-size spiral connecting piece to tightly connect the tiny part with the cabin body, it is ensured that the tiny part assembling work can be smoothly carried out in a complex space, the probability of colliding with precise aviation parts installed around in the operation process is reduced, and instrument part damage caused by colliding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic assembly devices for parts, in particular to an automatic assembly device for tiny aviation parts. Background Art

[0002] As the epitome of modern technology, aviation equipment encompasses a wide variety of systems and internal components with diverse functions. Although some components in aviation equipment are small in size, they play a vital role in the entire system. These components are widely distributed in various key parts of aviation equipment. For example, the tiny fuel injectors in the engine fuel injection system require precise control of the fuel injection amount to achieve efficient combustion; the precision sensor parts inside the aviation instruments can sensitively capture various flight parameters of the aircraft and provide timely feedback; and there are also tiny connectors connecting the lines in the aircraft electrical system to ensure stable current transmission.

[0003] Currently, during the assembly of aviation cabin sections, parts are connected to the cabin body through bolts. Driven by a locking mechanism, the bolts pass through the connecting piles of the parts and are fastened to the cabin body.

[0004] The traditional bolt locking device has a relatively large structure. During the assembly process between aviation cabin sections and tiny parts, there are often many compact structural areas due to the aviation cabin structure. Large locking devices are simply unable to drive tiny bolts and other connectors into the complex structural areas to drive the fasteners to connect the tiny target parts with the cabin sections. It has certain operational limitations. Even if it can barely get close in some cases, due to the large size of the device, it may collide with the surrounding installed precision aviation components if it is not careful during operation, which may cause irreversible damage to the components, thereby affecting the assembly quality of the entire aviation equipment and endangering flight safety.

[0005] Therefore, there is an urgent need to develop a miniaturized automatic assembly device specifically for assembling and locking small parts in aviation cabins. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic assembly device for aviation micro parts to solve the problems raised in the above background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic assembly device for aviation micro parts, comprising: A base, an actuator is mounted on one side of the top surface of the base, and a clamping and centering assembly is provided on the other side. A feeding mechanism is detachably mounted on the clamping and centering assembly, and a locking mechanism is fixedly connected to the end effector of the actuator through a bracket; The locking mechanism includes a fixed cylinder with an opening at one end, a sliding sleeve slidably connected to the fixed cylinder, a driving rod slidably connected to the sliding sleeve, an elastic member is provided between the driving rod and the bottom wall of the sliding sleeve, a fixing ring is coaxially mounted on the open end of the fixed cylinder, a spiral driving groove is provided on the inner wall of the fixing ring, the rod body of the driving rod movably passes through the fixing ring, and a spiral driving tooth is provided on the rod body of the driving rod along its axial direction to engage with the spiral driving groove; A fixing frame is installed on the outside of the fixing cylinder, and a driving motor is fixedly installed on one side of the fixing frame. The output end of the driving motor passes through the side wall of the fixing frame and is driven and connected to a driving tooth arranged inside the fixing frame. A rack is provided along the axial direction of the outer periphery of the sliding sleeve, and the driving tooth passes through the side wall of the fixing cylinder and is meshed with the rack. The front end of the driving rod passes through the fixing ring and the front end of the sliding sleeve in sequence and is fixedly connected to the three-jaw chuck.

[0008] Preferably, a plurality of guide blocks are equidistantly provided between the fixing ring and the inner wall of the fixing cylinder opening, the sliding sleeve is circumferentially provided with guide grooves corresponding to the plurality of guide blocks, and the guide blocks are slidably connected to the guide grooves.

[0009] Preferably, the open end of the fixing cylinder is connected to a positioning ring via a bracket, and the positioning ring is provided with a plurality of second wedge blocks equidistantly arranged around the inner wall thereof.

[0010] Preferably, the second wedge is elastically slidably connected to the positioning ring along the radial direction of the positioning ring.

[0011] Preferably, a feeding trough is provided on the end surface of the base, and the clamping and centering assembly is installed in the feeding trough, comprising a first positioning mechanism and a second positioning mechanism that are perpendicular to each other.

[0012] Preferably, the first positioning mechanism includes a first positioning motor, the first positioning motor is drivably connected to a first screw rod, the first screw rod is rotatably installed between the opposite side walls of the loading chute, and the two ends of the first screw rod are drivably connected to first clamping blocks that are mirror images of each other; The second positioning mechanism includes a second positioning motor, which is driven by a second screw rod. The second screw rod is rotatably installed between the opposite end side walls of the feeding trough perpendicular to the first screw rod. The two ends of the second screw rod are driven by second clamping blocks that are mirror images of each other.

[0013] Preferably, the feeding mechanism includes a loading plate, the four corners of which are provided with driving cylinders, and the output ends of the driving cylinders are driven and connected to a movable plate; The loading plate is provided with a plurality of accommodating holes in a matrix, and the top end surface of the movable plate is provided with a plurality of limiting columns corresponding to the plurality of accommodating holes one by one.

[0014] Preferably, a plurality of first wedge blocks are equidistantly provided around the inner wall of the accommodating hole, and the first wedge blocks are elastically slidably connected to the accommodating hole along the radial direction of the accommodating hole.

[0015] Compared with the prior art, the present invention provides an automatic assembly device for aviation micro parts, which has the following beneficial effects: The present invention converts the axial displacement of the sleeve into the rotational motion of the drive rod by arranging an elastic part, a fixing ring and the cooperation between the spiral driving teeth and the spiral driving groove on the driving rod in the fixing cylinder. No complicated motor-driven rotation structure is required, so that the driving rod has a torsional torque that can drive the small-sized spiral connector to fasten the tiny parts to the cabin body, ensuring that the assembly of tiny parts can be carried out smoothly in complex spaces, reducing the probability of collision with surrounding installed precision aviation parts during operation, and avoiding damage to instrument parts due to collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural diagram of the connection relationship between the base, the clamping and centering assembly, and the feeding mechanism of the present invention; Figure 3 It is a three-dimensional partial cross-sectional structural schematic diagram of the feeding mechanism of the present invention; Figure 4 A three-dimensional structural diagram showing the layout and connection relationship between the base and the clamping and centering assembly of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the locking mechanism of the present invention; Figure 6 It is a partial cross-sectional schematic diagram of the three-dimensional structure of the locking mechanism of the present invention; Figure 7 This is a front view structural cross-sectional diagram of the locking mechanism of the present invention; Figure 8 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the fixing cylinder of the present invention; Figure 9 This is a schematic diagram of a three-dimensional axial partial cross-sectional structure of the sliding sleeve of the present invention; Figure 10 It is a partially enlarged cross-sectional schematic diagram of the positioning ring of the present invention in the picking state.

[0017] In the figure: 1. Base; 11. Feeding trough; 2. Clamping and centering assembly; 21. First positioning mechanism; 211. First positioning motor; 212. First screw rod; 213. First clamping block; 22. Second positioning mechanism; 221. Second positioning motor; 222. Second screw rod; 223. Second clamping block; 3. Feeding mechanism; 31. Movable plate; 32. Limiting column; 33. Feeding plate; 331. Accommodating hole; 332. First wedge block ;34. Driving cylinder;4. Actuator;5. Locking mechanism;51. Fixed cylinder;511. Fixed ring;512. Spiral driving groove;513. Guide block;52. Positioning ring;521. Second wedge block;53. Sliding sleeve;531. Rack;532. Guide groove;54. Driving rod;541. Spiral driving tooth;55. Three-jaw chuck;56. Fixed frame;561. Active tooth;562. Driving motor;57. Elastic member. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0020] Examples, such as Figure 1 - Figure 10 As shown, an automatic assembly device for aviation micro parts includes: Base 1, an actuator 4 is installed on one side of the top surface of the base 1. The actuator 4 is a six-axis visual robotic arm. The internal motor drives the rotation of each joint to achieve six-axis linkage and can perform complex movements in three-dimensional space. At the same time, the visual system carried by the robotic arm can monitor and identify the working environment in real time, plan the movement path according to the preset program, and accurately locate the target position, providing flexible and precise motion control for the entire assembly process. It can drive the locking mechanism 5 to accurately pick up tiny bolt connectors from the feeding mechanism 3 and transport them to the corresponding equipment components of the aviation equipment compartment and the corresponding connection ports of the compartment body to ensure the smooth progress of subsequent assembly operations. The base 1 also A clamping and centering component 2 is provided on one side, and a feeding mechanism 3 is detachably mounted on the clamping and centering component 2. The feeding mechanism 3 is used to fix the connection piece that needs to be locked. The end effector of the actuator 4 is fixedly connected to the locking mechanism 5 through a bracket. The actuator 4 drives the locking mechanism 5 to move, removes the tiny bolt connection piece from the feeding mechanism 3, and drives the locking mechanism 5 and the bolt to the threaded hole corresponding to the equipment component and the cabin body corresponding to the aviation equipment compartment section through the actuator 4. The locking mechanism 5 is driven by the actuator 4 to move, thereby adjusting the axial direction of the bolt it picks up to make it coaxial with the threaded hole. The locking mechanism 5 drives the bolt to rotate and screw the bolt into the threaded hole. The locking mechanism 5 includes a fixed cylinder 51 with an opening at one end, a sliding sleeve 53 being slidably connected in the fixed cylinder 51, and a driving rod 54 being slidably connected in the sliding sleeve 53 for driving the bolt to rotate so that the bolt passes through the component and is connected to the side wall of the cabin through the thread arranged on its outer periphery, thereby fixing the installed component. An elastic member 57 is provided between the driving rod 54 and the bottom wall of the sliding sleeve 53, and a fixing ring 511 is coaxially installed at the open end of the fixed cylinder 51. The inner wall of the fixing ring 511 is provided with a spiral driving groove 512, and the rod body of the driving rod 54 is movably passed through the fixing ring 511, and a spiral driving tooth 541 meshing with the spiral driving groove 512 is provided on the rod body of the driving rod 54 along its axial direction. The elastic member 57 is used to push the driving rod 54 to move along the axial direction of the sliding sleeve 53 after being compressed, and then the driving rod 54 is released from the sliding sleeve 53. The screw drive teeth 541 of the driving rod 54 are meshed with the screw drive grooves 512 of the fixing cylinder 51, so that the driving rod 54 rotates in the spiral direction during the axial movement of the sliding sleeve 53, converting the linear motion into a rotational torque. The front end of the driving rod 54 passes through the fixing ring 511 and the front end of the sliding sleeve 53 in sequence and is fixedly connected to the three-jaw chuck 55. Since the elastic member 57 inside the sliding sleeve 53 cannot be completely compressed, the front end of the driving rod 54 is normally at the front end of the sliding sleeve 53, and the end is equipped with a three-jaw chuck 55 for clamping the bolt. After the three-jaw chuck 55 clamps the bolt, it rotates with the driving rod 54 and drives the bolt to be screwed into the connecting hole, thereby completing the locking action. The spiral direction of the bolt driving teeth should be consistent with the axial thread direction of the bolt to be locked. A fixing frame 56 is installed on the outside of the fixed cylinder 51, and a driving motor 562 is fixedly installed on one side of the fixing frame 56. The output end of the driving motor 562 passes through the side wall of the fixing frame 56 and is driven to be connected to the active gear 561 set inside the fixing frame 56. A rack 531 is provided on the outer periphery of the sliding sleeve 53 along its axial direction. The active gear 561 passes through the side wall of the fixed cylinder 51 and is meshed with the rack 531. The driving motor 562 drives the sliding sleeve 53 to move axially along the fixed cylinder 51 through the active gear 561. Before the locking preparation, the driving motor 562 drives the sliding sleeve 53 to move to the end of the fixed cylinder 51 away from the opening. The elastic member 57 inside the sliding sleeve 53 is in a relaxed state. The actuator 4 When the integral locking driving rod 54 is driven to pick up the connecting piece, the three-claw chuck 55 at the front end of the driving rod 54 is clamped with a head, and the end of the head is engaged with the notch of the connecting piece installed in the feeding mechanism 3. The actuator 4 drives the integral locking mechanism 5 to press down, so that the end of the connecting piece squeezes the second wedge block 521 provided on the inner side of the positioning ring 52, causing the second wedge block 521 to contract, thereby allowing the end of the connecting piece to pass through the second wedge block 521 and push the driving rod 54 to retract toward one end of the sliding sleeve 53, thereby compressing the elastic member 57. At this time, the bottom end surface of the connecting piece is in abutment with the top surface of the second wedge block 521, forming a clamping structure, thereby preventing the elastic member 57 from pushing the driving rod 54 to retract toward one end of the sliding sleeve 53, thereby compressing the elastic member 57. The movable rod 54 moves, and the elastic member 57 is in a preliminary energy storage state; during the locking operation, the execution structure drives the locking mechanism 5 to move to the connection port of the small part, and keeps the driving rod 54 coaxial with the connection port, so that the connection part picked up by the locking assembly is aligned with the connection port, and the sliding sleeve 53 is driven by the driving motor 562 to move along the axial direction of the fixed cylinder 51 toward the opening section of the fixed cylinder 51, and cooperates with the driving member to further compress the elastic member 57, so that the elastic member 57 further stores energy. When the thrust applied by the elastic member 57 to the driving rod 54 is greater than the clamping effect of the second wedge block 521 on the connection part, the second wedge block 521 is subjected to the axial pressure of the elastic member 57 and generates a The radial component of force 52 pushes the second wedge block 521 to shrink toward the inside of the positioning ring 52, so that the driving rod 54 can push the connector through the positioning ring 52 through the head installed by the three-jaw chuck 55, and then to the connection port of the tiny part. During the movement of the driving rod 54, the spiral driving teeth 541 provided on its rod body are acted upon by the spiral driving groove 512 provided on the inner side of the fixing ring 511 at the open end of the fixing tube 51, and rotate, so that the connector can be driven to rotate through the screwdriver bit, so that the connector can be rotated and screwed into the connection port of the tiny part, and its end is connected to the side wall of the cabin section of the aviation equipment after passing through the tiny part, thereby fastening and installing the tiny part.

[0021] During the locking process, the axial displacement of the sleeve 53 and the rotational movement of the drive rod 54 are axially superimposed in space. The axial movement of the sleeve 53 is converted into a power source for driving the drive rod 54 to rotate after being stored in energy by the elastic member 57. The power source rotates the drive rod 54, so that the drive rod 54 has a torsional torque. The torsional torque is sufficient to drive small-sized screws and other connectors to be fastened to the cabin through the screwdriver bit, thereby assembling and fixing tiny parts in the cabin of the aviation equipment, simplifying the complex locking and twisting drive structure.

[0022] In order to enable the driving rod 54 to be stably pushed by the elastic member 57, a top plate larger than the diameter of the rod body and smaller than the inner diameter of the sliding sleeve 53 is provided at the end of the driving rod 54 relative to the elastic member 57, which is used to resist the elastic member 57, so that the elastic potential energy of the elastic member 57 acts on the top plate, pushing the driving rod 54 to move through the top plate, and the end surface of the elastic member 57 in contact with the fixed tube 51 and the top plate should be set to a spherical surface, so that the surface contact is changed to point contact, reducing friction, so that the driving rod 54 can rotate smoothly under the action of the spiral driving groove 512 inside the fixing ring 511 after being driven by the elastic member 57, thereby driving the connecting member to twist.

[0023] Furthermore, if Figure 8 、 Figure 9 As shown, a number of guide blocks 513 are equidistantly provided between the fixing ring 511 and the inner wall of the opening of the fixing cylinder 51, and the sliding sleeve 53 is circumferentially provided with guide grooves 532 corresponding to the guide blocks 513, and the guide blocks 513 are slidably connected to the guide grooves 532. During the operation of the locking mechanism 5, the sliding sleeve 53 needs to frequently and stably move axially along the fixing cylinder 51 to achieve compression and release of the elastic member 57, thereby driving the driving rod 54 to complete the locking action of the bolt. The guide blocks 513 are slidably connected to the guide grooves 532, which play a guiding and limiting role, avoiding problems such as uneven compression of the elastic member 57 and uneven rotation of the driving rod 54 due to unstable movement of the sliding sleeve 53, thereby improving the reliability and stability of the locking mechanism 5.

[0024] Furthermore, if Figure 5 、 Figure 6 、 Figure 7As shown, the open end of the fixing cylinder 51 is connected to a positioning ring 52 through a bracket, and a plurality of second wedge blocks 521 are equidistantly arranged around the inner wall of the positioning ring 52. A plurality of second contraction cavities are respectively provided in the inner wall of the positioning ring 52 corresponding to the plurality of second wedge blocks 521, and a second elastic reset member is provided between the second wedge block 521 and the second contraction cavity. When picking up a connecting piece such as a bolt, the end of the top of the connecting piece squeezes the second wedge block 521 to compress the second elastic reset member and shrink it. After the connecting piece passes through, the second wedge block 521 is reset and engaged with the bottom of the connecting piece, thereby removing the connecting piece from the feeding mechanism. 3 is transferred to the locking mechanism 5; during the locking operation, when the force applied by the elastic member 57 to the driving rod 54 is large enough, the second wedge block 521 generates a radial component force under the axial pressure and contracts again, so that the connecting member can be installed to the target position through the positioning ring 52. In order to enable the second wedge block 521 to move radially along the positioning ring 52 under the action of pressure, second inclined driving surfaces are provided on the upper and lower axial end surfaces of the second wedge block 521, so that a horizontal component force parallel to the radial end surface of the positioning ring 52 can be generated when subjected to pressure, thereby pushing the second wedge block 521 to move.

[0025] Furthermore, if Figure 7 and Figure 10 As shown, the second wedge 521 is elastically slidably connected to the positioning ring 52 along the radial direction of the positioning ring 52, ensuring that the connecting piece is released and accurately installed at the right time, avoiding the connecting piece from falling off during the transfer process, and improving the stability of the assembly process.

[0026] Furthermore, a loading trough 11 is provided on the end face of the base 1, and the clamping and centering assembly 2 is installed in the loading trough 11, including a first positioning mechanism 21 and a second positioning mechanism 22 perpendicular to each other, which are used to clamp and install the feeding mechanism 3 so that the feeding mechanism 3 is in the center position of the loading trough 11, so as to facilitate the locking mechanism 5 to pick up the connecting parts from the feeding mechanism 3.

[0027] Furthermore, if Figure 3 As shown, the first positioning mechanism 21 includes a first positioning motor 211, which is driven by a first screw rod 212. The first screw rod 212 is rotatably mounted between the opposite side walls of the loading chute 11. Both ends of the first screw rod 212 are driven by first clamping blocks 213 that are mirror images of each other. The second positioning mechanism 22 includes a second positioning motor 221, and the second positioning motor 221 is driven and connected to a second screw rod 222. The second screw rod 222 is rotatably installed between the opposite side walls of the feeding trough 11 perpendicular to the first screw rod 212. The two ends of the second screw rod 222 are driven and connected to second clamping blocks 223 that are mirror images of each other. The first positioning mechanism 21 and the second positioning mechanism 22 in the clamping and centering assembly 2 are distributed perpendicular to each other. After the first positioning motor 211 is started, its output shaft drives the first screw rod 212 to rotate. Since the first screw rod 212 is rotatably installed between the opposite side walls of the feeding trough 11, and the two ends are driven and connected to the second clamping blocks 223 that are mirror images of each other, A clamping block 213, the rotation of the screw is converted into a linear motion of the first clamping block 213 along the axial direction of the screw, and the two first clamping blocks 213 move relative to or opposite to each other, thereby adjusting and positioning the position of the feeding mechanism 3 placed in the loading trough 11 in the first direction. Similarly, in the second positioning mechanism 22, the second positioning motor 221 drives the second screw 222 to rotate, driving the second clamping blocks 223 at both ends of the second screw 222, which are mirror images of each other, to make relative or opposite linear motions in a direction perpendicular to the first screw 212, completing the adjustment and positioning of the position of the feeding mechanism 3 in the first direction perpendicular to the first direction, and realizing precise centering clamping of the feeding structure.

[0028] Furthermore, if Figure 2 、 Figure 3 、 Figure 4 As shown, the feeding mechanism 3 includes a loading plate 33, and driving cylinders 34 are installed at the four corners of the loading plate 33. The output end of the driving cylinder 34 is driven and connected to the movable plate 31. When feeding is needed, the driving cylinder 34 drives the piston rod to extend, pushing the movable plate 31 to move upward. At this time, the limiting column 32 on the top of the movable plate 31 is inserted into the corresponding accommodating hole 331, and the connecting piece placed in the accommodating hole 331 is pushed upward, so that the end of the connecting piece protrudes from the surface of the loading plate 33. The actuator 4 drives the locking mechanism 5 to move to the top of the corresponding accommodating hole 331, so that The positioning ring 52 is kept coaxial with the accommodating hole 331, and the locking mechanism 5 is driven to move downward gradually until the positioning ring 52 abuts against the top surface of the loading plate 33. At this time, the end of the connecting piece protruding from the loading plate 33 contacts the second inclined driving surface at one end of the bottom of the second wedge block 521 inside the positioning ring 52, so that the second wedge block 521 is subjected to radial compression force and shrinks into the second shrinkage cavity radially inside the positioning ring 52, so that the end of the connecting piece can pass through the second wedge block 521, thereby transferring from the accommodating hole 331 to the locking mechanism 5, completing the picking operation; A plurality of accommodating holes 331 are provided in a matrix on the loading plate 33, and a plurality of limiting columns 32 corresponding to the plurality of accommodating holes 331 are provided on the top end surface of the movable plate 31, which are used to move radially along the corresponding accommodating holes 331 under the action of the driving cylinder 34, thereby limiting the depth of the connecting part installed in the accommodating hole 331, so that the end of the connecting part is higher than the top end surface of the loading plate 33, thereby facilitating the locking mechanism 5 to pick up.

[0029] Furthermore, if Figure 3 、 Figure 10 As shown, a plurality of first wedge blocks 332 are equidistantly provided around the inner wall of the accommodating hole 331. The first wedge blocks 332 are elastically slidably connected to the accommodating hole 331 along the radial direction of the accommodating hole 331. The interior of the accommodating hole 331 is deepened along its radial direction to provide a first contraction cavity for accommodating the first wedge blocks 332. A first elastic reset member capable of pushing the first wedge blocks 332 to move radially is provided between the first contraction cavity and the first wedge blocks 332. When the connecting member is placed in the accommodating hole 331, the outer wall of the connecting member will squeeze the first wedge blocks 332, causing it to slide radially inward along the accommodating hole 331. Since the first wedge blocks 332 are elastic, they will press the connecting member after sliding. A squeezing force toward the center is generated, thereby playing a preliminary centering and fixing role for the connecting piece, preventing it from shifting or shaking in the accommodating hole 331. Similarly, in order to enable the first wedge block 332 to be pushed smoothly to move radially, the axial upper end of the first wedge block 332 is also provided with a first inclined driving surface, which gradually moves away from the central axis of the accommodating hole 331 from the middle of the first wedge block 332 to the top of the first wedge block 332, so that when the connecting piece is installed, the force exerted by the bottom of the connecting piece on the first inclined driving surface generates a component force parallel to the radial end face of the accommodating hole 331, thereby pushing the first wedge block 332 to move.

[0030] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic assembly device for aviation micro parts, characterized in that: include: A base (1), wherein an actuator (4) is mounted on one side of a top surface of the base (1), and a clamping and centering assembly (2) is provided on the other side, a feeding mechanism (3) is detachably mounted on the clamping and centering assembly (2), and a locking mechanism (5) is fixedly connected to the end actuator of the actuator (4) via a bracket; The locking mechanism (5) comprises a fixed cylinder (51) with an opening at one end, a sliding sleeve (53) being slidably connected in the fixed cylinder (51), a driving rod (54) being slidably connected in the sliding sleeve (53), an elastic member (57) being provided between the driving rod (54) and the bottom wall of the sliding sleeve (53), a fixing ring (511) being coaxially mounted on the open end of the fixed cylinder (51), an inner wall of the fixing ring (511) being provided with a spiral driving groove (512), a rod body of the driving rod (54) being movable through the fixing ring (511), and a spiral driving tooth (541) being meshed with the spiral driving groove (512) being provided on the rod body of the driving rod (54) along its axial direction; A fixing frame (56) is installed outside the fixing cylinder (51), and a driving motor (562) is fixedly installed on one side of the fixing frame (56). The output end of the driving motor (562) passes through the side wall of the fixing frame (56) and is driven and connected to a driving tooth (561) arranged inside the fixing frame (56). A rack (531) is provided on the outer periphery of the sliding sleeve (53) along its axial direction. The driving tooth (561) passes through the side wall of the fixing cylinder (51) and is meshed and connected with the rack (531). The front end of the driving rod (54) passes through the fixing ring (511) and the front end of the sliding sleeve (53) in sequence, and is then fixedly connected to the three-jaw chuck (55).

2. The automatic assembly device for aviation micro parts according to claim 1, characterized in that: A plurality of guide blocks (513) are equidistantly provided between the fixing ring (511) and the inner wall of the opening of the fixing cylinder (51), and a guide groove (532) corresponding to the plurality of guide blocks (513) is circumferentially provided on the sliding sleeve (53), and the guide blocks (513) are slidably connected to the guide grooves (532).

3. The automatic assembly device for aviation micro parts according to claim 2, characterized in that: The open end of the fixing cylinder (51) is connected to a positioning ring (52) via a bracket, and the positioning ring (52) is provided with a plurality of second wedge blocks (521) at equal intervals around its inner wall.

4. The automatic assembly device for aviation micro parts according to claim 3, characterized in that: The second wedge (521) is elastically slidably connected to the positioning ring (52) along the radial direction of the positioning ring (52).

5. The automatic assembly device for aviation micro parts according to claim 1, characterized in that: A loading trough (11) is provided on the end surface of the base (1), and the clamping and centering assembly (2) is installed in the loading trough (11) and includes a first positioning mechanism (21) and a second positioning mechanism (22) that are perpendicular to each other.

6. The automatic assembly device for aviation micro parts according to claim 5, characterized in that: The first positioning mechanism (21) includes a first positioning motor (211), the first positioning motor (211) is drivably connected to a first screw rod (212), the first screw rod (212) is rotatably mounted between two opposite side walls of the loading trough (11), and both ends of the first screw rod (212) are drivably connected to first clamping blocks (213) that are mirror images of each other; The second positioning mechanism (22) includes a second positioning motor (221), the second positioning motor (221) is driven and connected to a second screw rod (222), the second screw rod (222) is rotatably mounted between the opposite side walls of the loading trough (11) perpendicular to the first screw rod (212), and the two ends of the second screw rod (222) are driven and connected to second clamping blocks (223) that are mirror images of each other.

7. The automatic assembly device for aviation micro parts according to claim 1, characterized in that: The feeding mechanism (3) includes a loading plate (33), and driving cylinders (34) are installed at the four corners of the loading plate (33). The output end of the driving cylinder (34) is driven and connected to a movable plate (31); The loading plate (33) is provided with a plurality of accommodating holes (331) in a matrix, and the top end surface of the movable plate (31) is provided with a plurality of limiting columns (32) corresponding one-to-one to the plurality of accommodating holes (331).

8. The automatic assembly device for aviation micro parts according to claim 7, characterized in that: The accommodating hole (331) is provided with a plurality of first wedge blocks (332) at equal intervals around its inner wall, and the first wedge blocks (332) are elastically slidably connected to the accommodating hole (331) along the radial direction of the accommodating hole (331).

Images