A drilling device for rivet processing

Abstract

The present application relates to the technical field of drilling device, especially relates to a drilling device for riveting piece machining, including base, support, track, moving clamp table assembly, cam avoiding mechanism, double-crank mechanism, controller, mounting table, stable clamping mechanism, mechanical arm and drill bit. Through the double-crank mechanism, two moving clamp table assemblies are driven to move synchronously along the up and down tracks, and the automatic avoidance during the work position exchange process is realized by cooperating with the linear cam, effectively solving the double work position interference problem, adopting the modular design frame type clamp table and the adjustable clamp assembly, which can quickly adapt to different specifications of workpieces, the stable clamping mechanism drives the inclined surface centering block to implement centering locking to the frame type clamp table through the double-end screw, combined with the non-contact positioning detection system, ensuring the machining precision. The present application realizes the parallel operation of clamping and machining, significantly improves the production efficiency and machining quality, and has good flexible production capacity.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically a drilling device for riveting parts processing. Background Technology

[0002] In aerospace, automotive manufacturing, and precision instrumentation, riveting is a key technology for ensuring structural strength and sealing. With the widespread use of lightweight materials and complex structural components, higher requirements are placed on the machining accuracy of riveting holes. The hole position tolerance is high, and the hole wall must be free of burrs and cracks. Currently, the manufacturing industry is developing towards flexibility and intelligence, and multi-variety, small-batch production mode has become the mainstream. Traditional single-station processing equipment can no longer meet the efficiency and flexibility requirements of modern production lines.

[0003] Currently, common riveting drilling devices mainly adopt two technical solutions: one is a fixed processing platform based on CNC machine tools, where drilling is performed after manual clamping; the other is a Cartesian coordinate robotic arm combined with a simple translation worktable to achieve limited workstation changes. Both solutions adopt a serial operation mode, which means that the machine needs to be stopped during processing for workpiece loading and unloading. Moreover, the fixture system is mostly specially designed and cannot quickly adapt to different specifications of riveting parts. In terms of workstation exchange, existing equipment mostly adopts a simple linear guide structure and lacks an effective motion interference avoidance mechanism, which restricts the further improvement of equipment operating efficiency.

[0004] The existing technology has the following main drawbacks: First, it has low production efficiency, as the clamping time accounts for a high proportion of the entire processing cycle due to the serial operation mode. Second, it is difficult to guarantee processing accuracy, as multiple clamping operations can easily lead to cumulative errors, resulting in excessive coaxiality of the riveting holes of the upper and lower mating parts. Furthermore, it lacks an effective in-situ stabilization mechanism, and vibration during the drilling process directly affects the hole wall quality. Third, the equipment lacks flexibility, and the special fixtures need to be changed according to the product, resulting in long changeover times. In addition, there is a lack of reliable avoidance mechanisms during dual-station exchanges, posing a risk of motion interference and affecting the long-term stability and reliability of the equipment. These problems seriously restrict the improvement of the processing quality and efficiency of riveted parts. Summary of the Invention

[0005] The purpose of this invention is to provide a drilling device for riveting parts processing, so as to solve the problems of low processing efficiency, insufficient positioning accuracy, insufficient rigidity, low equipment flexibility, and high risk of motion interference during dual-station exchange in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for riveting parts, comprising a base, supports, tracks, a movable fixture assembly, a cam avoidance mechanism, a double crank mechanism, a controller, a mounting platform, a stabilizing clamping mechanism, a robotic arm, and a drill bit. Supports are provided at the four corners of the top of the base. Two sets of tracks are installed on the inner sides of the four supports, arranged vertically. A mounting platform is provided at the rear of the base, and a robotic arm is provided at the rear of the mounting platform. A drill bit is mounted on the top of the robotic arm. The movable fixture assembly is slidable. The movable fixture assembly is mounted above the two sets of tracks. A cam avoidance mechanism is located on the top of the base and is used to drive the movable fixture assembly to generate displacement for motion interference avoidance. A double crank mechanism is located on the left side of the base and is used to guide the movable fixture assembly to reciprocate back and forth. A stabilizing clamping mechanism is located opposite to the top of the mounting platform and is used to fix and clamp the movable fixture assembly. A controller is mounted on the front side of the double crank mechanism. The movable fixture assembly, double crank mechanism, stabilizing clamping mechanism and robotic arm are all electrically connected to the controller.

[0007] Preferably, the objective is to provide two interchangeable frame-type clamping platforms. The movable clamping platform assembly includes two movable seats, two frame-type clamping platforms, several sliding rods, two drive rods, and several clamping assemblies. The two movable seats are slidably mounted above the two sets of tracks. The frame-type clamping platform is provided on the top of each of the two movable seats. The frame-type clamping platform located above is fixedly connected to the movable seat located above. The frame-type clamping platform located below is slidably connected to the movable seat located below via the several sliding rods, thereby enabling the frame-type clamping platform located below to move up and down. The drive rod is provided on the left side of each of the two movable seats. Both drive rods are connected to a double crank mechanism. The top of the two frame-type clamping platforms is an open frame structure, and the bottom is provided with several mounting interfaces. The clamping assemblies are detachably mounted on the several mounting interfaces. The clamping assemblies can be adjusted in position according to the shape and size of the riveted parts.

[0008] Preferably, the purpose is to achieve a flexible fixed riveting component. The clamping assembly includes a mounting frame, a clamping block, a pneumatic rod, and short connecting rods. The mounting frame is detachably mounted to the mounting interface at the bottom of the frame-type clamping table. The clamping block is rotatably mounted to the top of the mounting frame. The pneumatic rod is rotatably mounted to the inner cavity sidewall of the mounting frame and electrically connected to the controller. The output end of the pneumatic rod is connected to the bottom of the mounting frame and the bottom of the clamping block respectively through the two short connecting rods.

[0009] Preferably, when the controller drives the output end of the pneumatic rod to extend or retract, the clamping block is driven to rotate through the transmission of the two short connecting rods, thereby clamping or releasing the workpiece. When the output end of the pneumatic rod extends, the linear motion is converted into rotational motion through the lever transmission of the two short connecting rods, forcing the clamping block to rotate downwards to clamp the workpiece. When the output end retracts, the clamping block rotates in the opposite direction to release, achieving rapid clamping and solving the defects of low efficiency and insufficient adaptability of existing clamping mechanisms.

[0010] Preferably, the purpose is to achieve automatic obstacle avoidance without control intervention. The cam avoidance mechanism includes a linear cam, a lifting rod, and a limiting wheel. The linear cam is installed on the top of the base, and its profile is divided into a middle avoidance section and lifting sections at the front and rear ends. The height of the lifting section is higher than the height of the avoidance section. The lifting rod is provided at the bottom of the frame-type fixture table located below, and the limiting wheel is provided at the bottom of the lifting rod. The linear cam supports the limiting wheel. When the moving seat located below drives the frame-type fixture table to move and causes the limiting wheel to enter the avoidance section from the lifting section, the frame-type fixture table descends accordingly to avoid the obstacle. When the limiting wheel enters the lifting section on the other side from the avoidance section, the frame-type fixture table rises and resets. The cam avoidance mechanism automatically handles interference through mechanical profile, and the power comes from the movement of the moving seat, which drives the limiting wheel to roll along the linear cam.

[0011] Preferably, when the limiting wheel enters the avoidance section from the lifting section, the profile height decreases, and the lower frame fixture table is forced to descend to avoid the obstacle by the lifting rod. When it enters the lifting section on the other side from the avoidance section, the profile height increases, and the frame fixture table rises to reset, realizing automatic avoidance without control intervention and solving the collision problem when the upper and lower fixture tables are exchanged.

[0012] Preferably, the purpose is to detect whether the moving seat has reached a preset limit position. The double-crank mechanism includes a mounting base, a drive shaft, a first crank, a first support rod, a second crank, a second support rod, two drive connecting rods, a drive assembly, and a positioning detection assembly. The mounting base is installed on the left side of the base. The drive shaft is rotatably mounted on the top front side of the mounting base. The first crank is fixedly mounted on the top of the drive shaft. The first support rod is fixedly mounted on the outer end of the first crank. The second crank is fixedly mounted on the top of the first support rod. The second support rod is fixedly mounted on the top of the second crank. The first and second support rods are arranged with a 180-degree phase difference relative to the rotation center of the drive shaft. The two drive connecting rods... One end of the drive shaft is rotatably connected to the first support rod and the second support rod, and the other end is rotatably connected to the drive rods of the two movable seats. When the drive shaft rotates, it drives the two drive linkages to move through the transmission of the first crank, the first support rod, the second crank, and the second support rod, thereby driving the two movable seats to reciprocate synchronously in opposite directions or in opposite directions. The drive assembly is mounted on the mounting base and is connected to the drive shaft for driving its rotation. The positioning detection assembly is mounted on the mounting base for detecting whether the movable seat has reached a preset limit position. The drive assembly and the positioning detection assembly are electrically connected to the controller. A protective cover is provided on the front side of the mounting base, and the controller is fixedly mounted on the front side of the protective cover.

[0013] Preferably, the drive assembly includes a first servo motor, a first pulley, a second pulley, and a belt. The first servo motor is fixedly mounted on the top of the mounting base and electrically connected to the controller. The first pulley is fixedly mounted on the output end of the first servo motor. The second pulley is disposed at the bottom end of the drive shaft. The belt is tensioned and sleeved on the first pulley and the second pulley to form a belt drive mechanism, so that the first servo motor can drive the drive shaft to rotate.

[0014] Preferably, the purpose is to achieve non-contact position detection. The positioning detection component includes a photoelectric sensor and a reflector. The photoelectric sensor is fixedly installed on the top rear side of the mounting base and electrically connected to the controller. The reflector is fixedly installed on the top of one of the drive linkages. The reflector is positioned such that when the moving base moves to a preset limit position, the reflector is located in the detection path of the photoelectric sensor, and can reflect the detection signal emitted by the photoelectric sensor back to its receiving end. After receiving the laser signal emitted by itself, the photoelectric sensor sends a position signal to the controller.

[0015] Preferably, the purpose is to center and clamp or release the positioning part. The stabilizing clamping mechanism includes a support column, a slide groove, a double-ended screw, a second servo motor, a slider, a clamping frame, an inclined centering block, and a positioning part. Two support columns are installed at the left and right ends of the top of the mounting platform. The slide groove is opened inside the support column. The double-ended screw is rotatably installed in the inner cavity of the slide groove, with its two ends having opposite thread directions. Two sliders are screwed to the upper and lower ends of the double-ended screw and are slidably connected to the slide groove. The second servo motor is fixedly installed on the top of the support column, and its output end is fixedly connected to the double-ended screw and electrically connected to the controller. The clamping frame is located inside the slider, and the inclined centering block is located inside the clamping frame. The positioning part is located on the frame-type fixture platform and cooperates with the inclined centering block. When the second servo motor drives the double-ended screw to rotate, it drives the two sliders to move towards or away from each other, thereby centering and clamping or releasing the positioning part through the clamping frame and the inclined centering block.

[0016] The advantages of this invention compared to the prior art are as follows:

[0017] 1. This invention achieves interference-free and precise exchange between two workstations through an innovative combination of a double-crank mechanism and a cam avoidance mechanism. The double-crank mechanism, through the first and second support rods arranged with a 180-degree phase difference, synchronously converts the rotational motion of the drive shaft into the reciprocating motion of the two moving seats in opposite directions or back to back. Meanwhile, the linear cam, through its unique avoidance and lifting section contours, automatically controls the lifting and avoiding of the lower frame-type fixture table during the exchange process, perfectly solving the motion interference problem when exchanging between two workstations with an upper and lower layout. This significantly improves the utilization rate of the equipment and fundamentally breaks through the efficiency bottleneck of the traditional serial operation mode.

[0018] 2. This invention employs a multi-stage stabilizing clamping system to ensure ultimate precision and stability during the machining process. The stabilizing clamping mechanism drives symmetrically arranged sliders via double-headed screws, which in turn drive inclined centering blocks to synchronously center and clamp the positioning parts at the four corners of the frame-type fixture table, effectively eliminating machining vibration. Simultaneously, the fixture assembly achieves precise rotational clamping of the clamping blocks through a planar linkage mechanism composed of pneumatic rods and short connecting rods. Combined with a non-contact positioning and detection system composed of photoelectric sensors and reflectors, a complete precision assurance system is formed, effectively guaranteeing the accuracy of hole positions and the quality of hole walls.

[0019] 3. This invention features a modular and innovative design for the fixture system, achieving high flexibility and rapid changeover capability. The frame-type fixture table adopts an open top frame structure and a standardized bottom mounting interface, along with detachable fixture components, allowing for rapid repositioning and reconfiguration based on the shape and size of the riveted parts. The independent clamping unit, consisting of the mounting frame and the clamping block, supports individual adjustment and replacement. Combined with the programmed parameter settings of the controller, this significantly shortens the equipment changeover time, perfectly adapting to the modern flexible production needs of multi-variety, small-batch production, and greatly expanding the application scope and economic benefits of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is the left view of the present invention;

[0022] Figure 3 A schematic diagram of the stable clamping mechanism;

[0023] Figure 4 This is a front view of the working state of the present invention;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the image;

[0025] Figure 6 This is the front view of the inclined plane centering block in the clamping state;

[0026] Figure 7 Right view of the moving fixture table assembly;

[0027] Figure 8 Left view of the double crank mechanism;

[0028] Figure 9 This is the main view of the fixture component.

[0029] In the diagram: 1. Base; 2. Bracket; 3. Track; 4. Moving fixture table assembly; 41. Moving seat; 42. Frame-type fixture table; 43. Sliding rod; 44. Drive rod; 45. Fixture assembly; 451. Mounting frame; 452. Clamping block; 453. Pneumatic rod; 454. Short connecting rod; 5. Cam avoidance mechanism; 51. Linear cam; 511. Avoidance section; 512. Lifting section; 52. Lifting rod; 53. Limiting wheel; 6. Double crank mechanism; 61. Mounting seat; 62. Drive shaft; 63. First crank; 64. First support rod; 65. Second crank 66. Second support rod; 67. Drive linkage; 68. Drive assembly; 681. First servo motor; 682. First pulley; 683. Second pulley; 684. Belt; 69. Positioning detection assembly; 691. Photoelectric sensor; 692. Reflector; 610. Protective cover; 7. Controller; 8. Mounting platform; 9. Stabilizing clamping mechanism; 91. Support column; 92. Slide groove; 93. Double-ended screw; 94. Second servo motor; 95. Slider; 96. Clamping frame; 97. Inclined centering block; 98. Positioning part; 10. Robotic arm; 11. Drill bit. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-9To achieve the above objectives, the present invention provides a technical solution: a drilling device for riveting parts includes a base 1, a bracket 2, a track 3, a movable clamping table assembly 4, a cam avoidance mechanism 5, a double crank mechanism 6, a controller 7, a mounting platform 8, a stabilizing clamping mechanism 9, a robotic arm 10, and a drill bit 11. The base 1 has brackets 2 at its four top corners, and two sets of tracks 3 are mounted on the inner sides of the four brackets 2, arranged vertically. A mounting platform 8 is located on the rear side of the base 1, and a robotic arm 10 is located on the rear side of the mounting platform 8. A drill bit is mounted on the top of the robotic arm 10. The movable clamping table assembly 4 is slidably mounted above the two sets of tracks 3. The cam avoidance mechanism 5 is located on the top of the base 1 and is used to drive the movable clamping table assembly 4 to generate displacement for motion interference avoidance. The double crank mechanism 6 is located on the left side of the base 1 and is used to guide the movable clamping table assembly 4 to reciprocate back and forth. The stabilizing clamping mechanism 9 is... The controller 7 is installed on the top of the mounting platform 8 to fix and clamp the movable fixture table assembly 4. The controller 7 is installed on the front side of the double crank mechanism 6. The movable fixture table assembly 4, the double crank mechanism 6, the stabilizing clamping mechanism 9 and the robotic arm 10 are all electrically connected to the controller 7. The working principle is that the controller 7 acts as the core control unit to coordinate the work. In the initial state, one movable fixture table assembly 4 is located at the processing station, and the robotic arm 10 drives the drill bit 11 to drill the workpiece. The other movable fixture table assembly 4 is located at the loading and unloading station for the operator to load and unload the workpiece. After receiving the instruction, the controller 7 starts the power source and controls each component through electrical signals. The double crank mechanism 6 guides the movable fixture table assembly 4 to reciprocate under the drive of the controller 7 to realize position exchange. The cam avoidance mechanism 5 automatically handles motion interference. The stabilizing clamping mechanism 9 fixes the frame-type fixture table 42 at the processing position to ensure processing accuracy. Finally, parallel operation is realized to improve efficiency.

[0032] As a preferred option, further, such as Figures 2-9As shown, the movable fixture platform assembly 4 includes two movable seats 41, two frame-type fixture platforms 42, several sliding rods 43, two drive rods 44, and several fixture assemblies 45. Two movable seats 41 are slidably mounted above the two sets of tracks 3. Each movable seat 41 has a frame-type fixture platform 42 on its top. The upper frame-type fixture platform 42 is fixedly connected to the upper movable seat 41, while the lower frame-type fixture platform 42 is slidably connected to the lower movable seat 41 via several sliding rods 43, allowing the lower frame-type fixture platform 42 to move up and down. Drive rods 44 are located on the left side of each movable seat 41, and both drive rods 44 are connected to a double-crank mechanism 6. The top of the two frame-type fixture platforms 42... The structure is an open frame with several mounting interfaces at the bottom. Each mounting interface can be detachably fitted with a clamping assembly 45. The clamping assembly 45 can be adjusted in position according to the shape and size of the riveted parts. Its working principle is that the working process of the moving clamping table assembly 4 begins with the drive of the double crank mechanism 6. The power is transmitted to the moving seat 41 through the drive rod 44, causing it to slide along the track 3. The upper frame-type clamping table 42 is fixed, while the lower frame-type clamping table 42 can move up and down through the sliding rod 43 to adapt to the lifting and lowering actions of the cam avoidance mechanism 5. The clamping assembly 45 adjusts its position according to the shape of the workpiece to achieve flexible clamping. Finally, the frame-type clamping table 42 carries the workpiece for exchange, solving the problems of poor clamp adaptability and unstable exchange in the prior art.

[0033] As a preferred option, further, such as Figure 9 As shown, the clamping assembly 45 includes a mounting frame 451, a clamping block 452, a pneumatic rod 453, and short connecting rods 454. The mounting frame 451 is detachably mounted to the mounting interface at the bottom of the frame-type clamping table 42. The clamping block 452 is rotatably mounted to the top of the mounting frame 451. The pneumatic rod 453 is rotatably mounted to the inner cavity side wall of the mounting frame 451 and electrically connected to the controller 7. The output end of the pneumatic rod 453 is connected to the bottom of the mounting frame 451 and the bottom of the clamping block 452 respectively through two short connecting rods 454. When the controller 7 drives the output end of the pneumatic rod 453 to extend or retract... The clamping block 452 is driven to rotate by the transmission of two short connecting rods 454, thereby clamping or releasing the workpiece. Its working principle is that the clamping assembly 45 fixes the workpiece by pneumatic drive. The power source comes from the electrical signal of the controller 7, which drives the pneumatic rod 453 to move. When the output end of the pneumatic rod 453 extends, the linear motion is converted into rotational motion by the lever transmission of the two short connecting rods 454, forcing the clamping block 452 to rotate downward to clamp the workpiece. When the output end retracts, the clamping block 452 rotates in the opposite direction to release, realizing rapid clamping and solving the defects of low efficiency and insufficient adaptability of existing clamping mechanisms.

[0034] As a preferred option, further, such as Figures 1-3As shown, the cam avoidance mechanism 5 includes a linear cam 51, a lifting rod 52, and a limiting wheel 53. The linear cam 51 is mounted on the top of the base 1, and its outline is divided into a middle avoidance section 511 and lifting sections 512 at the front and rear ends. The height of the lifting section 512 is higher than the height of the avoidance section 511. The bottom of the frame-type fixture table 42 located below is provided with the lifting rod 52, and the bottom of the lifting rod 52 is provided with the limiting wheel 53. The linear cam 51 supports the limiting wheel 53. When the moving seat 41 located below drives the frame-type fixture table 42 to move, and the limiting wheel 53 moves from the lifting section 512 into the avoidance section 511, the frame-type fixture table 42 descends accordingly to avoid the obstacle. When the frame fixture table 42 moves from the avoidance section 511 to the lifting section 512 on the other side, it rises and resets. The working principle is that the cam avoidance mechanism 5 automatically handles interference through mechanical contour. The power comes from the movement of the moving seat 41, which drives the limit wheel 53 to roll along the straight cam 51. When the limit wheel 53 moves from the lifting section 512 to the avoidance section 511, the contour height decreases. The lifting rod 52 forces the lower frame fixture table 42 to descend and avoid. When it moves from the avoidance section 511 to the lifting section 512 on the other side, the contour height increases and the frame fixture table 42 rises and resets, realizing automatic avoidance without control intervention and solving the collision problem when the frame fixture tables 42 with the upper and lower layouts are exchanged.

[0035] As a preferred option, further, such as Figure 8As shown, the double-crank mechanism 6 includes a mounting base 61, a drive shaft 62, a first crank 63, a first support rod 64, a second crank 65, a second support rod 66, two drive connecting rods 67, a drive assembly 68, and a positioning detection assembly 69. The mounting base 61 is mounted on the left side of the base 1. The drive shaft 62 is rotatably mounted on the top front side of the mounting base 61. The first crank 63 is fixedly mounted on the top of the drive shaft 62. The first support rod 64 is fixedly mounted on the outer end of the first crank 63. The second crank 65 is fixedly mounted on the top of the first support rod 64. The second support rod 66 is fixedly installed on the top of the second crank 65. The first support rod 64 and the second support rod 66 are arranged with a 180-degree phase difference relative to the rotation center of the drive shaft 62. One end of each of the two drive connecting rods 67 is rotatably connected to the first support rod 64 and the second support rod 66, respectively, and the other end is rotatably connected to the drive rod 44 of each of the two movable seats 41. When the drive shaft 62 rotates, the two drive connecting rods are driven through the transmission of the first crank 63, the first support rod 64, the second crank 65, and the second support rod 66. The movement of component 67 drives the two movable seats 41 to reciprocate synchronously in opposite directions or in opposite directions. A drive assembly 68 is mounted on the mounting base 61 and is connected to the drive shaft 62 to drive its rotation. A positioning detection assembly 69 is mounted on the mounting base 61 to detect whether the movable seats 41 have reached a preset limit position. The drive assembly 68 and the positioning detection assembly 69 are electrically connected to the controller 7. A protective cover 610 is provided on the front side of the mounting base 61, and the controller 7 is fixedly mounted on the front side of the protective cover 610. Its working principle is that the double crank mechanism 6... Rotary motion is converted into linear reciprocating motion. The power source comes from the drive assembly 68, which is started under the control of the controller 7. When the drive shaft 62 rotates, the first crank 63 and the second crank 65 are arranged with a 180-degree phase difference through the first support rod 64 and the second support rod 66, driving the two drive connecting rods 67 to move in opposite directions, thereby causing the moving seat 41 to move towards or away from each other. The positioning detection assembly 69 monitors the position in real time and feeds back the signal to the controller 7, ultimately achieving precise position exchange and solving the problems of poor synchronization and inaccurate positioning in traditional drive mechanisms.

[0036] As a preferred option, further, such as Figure 2As shown, the drive assembly 68 includes a first servo motor 681, a first pulley 682, a second pulley 683, and a belt 684. The first servo motor 681 is fixedly mounted on the top of the mounting base 61 and electrically connected to the controller 7. The first pulley 682 is fixedly mounted on the output end of the first servo motor 681. The second pulley 683 is located at the bottom end of the drive shaft 62. The belt 684 is tensioned and sleeved on the first pulley 682 and the second pulley 683 to form a belt drive mechanism, enabling the first servo motor 681 to drive the drive shaft 62 to rotate. Its working principle is that the drive assembly 68 provides power through belt drive. The controller 7 sends an electrical signal to start the first servo motor 681, and its output end rotates, driving the first pulley 682. Through the tension transmission of the belt 684, the power is transmitted to the second pulley 683, driving the drive shaft 62 to rotate, realizing smooth and efficient power transmission and solving the vibration and noise problems that may be caused by direct drive.

[0037] As a preferred option, further, such as Figure 2 or Figure 4 As shown, the positioning detection component 69 includes a photoelectric sensor 691 and a reflector 692. The photoelectric sensor 691 is fixedly installed on the top rear side of the mounting base 61 and electrically connected to the controller 7. The reflector 692 is fixedly installed on the top of one of the drive linkages 67. The position of the reflector 692 is such that when the moving base 41 moves to the preset limit position, the reflector 692 is in the detection path of the photoelectric sensor 691, which can reflect the detection signal emitted by the photoelectric sensor 691 back to its receiving end. After receiving the laser signal emitted by itself, the photoelectric sensor 691 sends a position signal to the controller 7. Its working principle is that the positioning detection component 69 realizes non-contact position detection. The power source is the emitting end of the photoelectric sensor 691, which emits a detection signal. When the moving base 41 moves to the limit position, the reflector 692 enters the detection path and reflects the signal back to the receiving end. After receiving the signal, the photoelectric sensor 691 sends a position signal to the controller 7. The signal returns from the emitting end to the receiving end through the reflector 692, ensuring the accuracy and reliability of position detection and solving the problems of easy wear and false detection of mechanical limit.

[0038] As a preferred option, further, such as Figure 3As shown, the stabilizing clamping mechanism 9 includes a support column 91, a slide groove 92, a double-ended screw 93, a second servo motor 94, a slider 95, a clamping frame 96, an inclined centering block 97, and a positioning part 98. Two support columns 91 are installed at the left and right ends of the top of the mounting platform 8. The slide groove 92 is formed inside the support column 91. The double-ended screw 93 is rotatably installed in the inner cavity of the slide groove 92, with its two ends having opposite thread directions. Two sliders 95 are screwed to the upper and lower ends of the double-ended screw 93 and are slidably connected to the slide groove 92. The second servo motor 94 is fixedly installed on the top of the support column 91, and its output end is fixedly connected to the double-ended screw 93 and electrically connected to the controller 7. The clamping frame 96 is located inside the slider 95, and the inclined centering block 97 is located inside the clamping frame 96. On the side, the positioning part 98 is set on the frame-type fixture table 42 and cooperates with the inclined centering block 97. When the second servo motor 94 drives the double-headed screw 93 to rotate, it drives the two sliders 95 to move towards or away from each other. Thus, the positioning part 98 is centered and clamped or released by the clamping frame 96 and the inclined centering block 97. Its working principle is that the stable clamping mechanism 9 achieves centering and clamping through motor drive. The power source comes from the second servo motor 94. Under the control of the controller 7, the double-headed screw 93 rotates. Since the thread direction is opposite, the two sliders 95 move towards or away from each other. The clamping frame 96 drives the inclined centering block 97 to squeeze or release the positioning part 98, realizing automatic centering and rigid fixation, and solving the defects of vibration and positioning deviation during processing.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling apparatus for rivet processing, characterized by, Include: Base (1), support (2), track (3), mounting table (8), mechanical arm (10) and drill bit (11), the top of the base (1) is provided with support (2) in four corners, two groups of tracks (3) are installed on the inner side of the four supports (2), two groups of tracks (3) are arranged in an upper and lower manner, the rear side of the base (1) is provided with a mounting table (8), the rear side of the mounting table (8) is provided with a mechanical arm (10), the top of the mechanical arm (10) is provided with a drill bit (11); Two groups of the track (3) are slidably installed with a moving clamp table assembly (4), the top of the base (1) is provided with a cam avoiding mechanism (5) for driving the moving clamp table assembly (4) to produce displacement to avoid motion interference, the left side of the base (1) is provided with a double crank mechanism (6) for guiding the moving clamp table assembly (4) to reciprocate forward and backward, the top of the mounting table (8) is oppositely provided with two stable clamping mechanisms (9) for fixing and clamping the moving clamp table assembly (4), the front side of the double crank mechanism (6) is provided with a controller (7), the moving clamp table assembly (4), the double crank mechanism (6), the stable clamping mechanism (9) and the mechanical arm (10) are electrically connected with the controller (7); The moving clamp table assembly (4) comprises: two moving seats (41) slidably installed above two groups of the track (3), the top of each of the two moving seats (41) is provided with a frame type clamp table (42), the frame type clamp table (42) located above is fixedly connected with the moving seat (41) located above, the frame type clamp table (42) located below is slidably connected with the moving seat (41) located below through a plurality of sliding rods (43), so that the frame type clamp table (42) located below can move up and down, the left side of each of the two moving seats (41) is provided with a driving rod (44), the two driving rods (44) are connected with the double crank mechanism (6), the top of each of the two frame type clamp tables (42) is an open frame structure, a plurality of mounting interfaces are arranged at the bottom, a plurality of clamp assembly (45) are detachably mounted on the mounting interfaces, and a plurality of the clamp assembly (45) can be positionally adjusted according to the shape and size of the riveting piece; The cam avoiding mechanism (5) comprises: a straight line cam (51) installed on the top of the base (1), the straight line cam (51) is divided into an avoiding section (511) in the middle and a jacking section (512) at the front and back ends, the height of the jacking section (512) is higher than that of the avoiding section (511), the frame type clamp table (42) located below is provided with a jacking rod (52) at the bottom, the bottom of the jacking rod (52) is provided with a limiting wheel (53), and the straight line cam (51) supports the limiting wheel (53); The double crank mechanism (6) comprises: a mounting seat (61) mounted on the left side of the base (1), a driving shaft (62) rotatably mounted on the top front side of the mounting seat (61), a first crank (63) fixedly mounted on the top of the driving shaft (62), a first supporting rod (64) fixedly mounted on the outer end of the first crank (63), a second crank (65) fixedly mounted on the top of the first supporting rod (64), a second supporting rod (66) fixedly mounted on the top of the second crank (65), the first supporting rod (64) and the second supporting rod (66) are arranged with a phase difference of 180 degrees relative to the rotation center of the driving shaft (62), two driving connecting rods (67) are rotatably connected to the first supporting rod (64) and the second supporting rod (66) respectively, and the other ends are rotatably connected to the driving rods (44) of the two moving seats (41) respectively, when the driving shaft (62) rotates, the first crank (63), the first supporting rod (64), the second crank (65) and the second supporting rod (66) are driven to move the two driving connecting rods (67), thereby driving the two moving seats (41) to move synchronously towards or away from each other, a driving assembly (68) is arranged on the mounting seat (61) and is in transmission connection with the driving shaft (62) for driving the rotation thereof, a positioning detection assembly (69) is arranged on the mounting seat (61) for detecting whether the moving seat (41) reaches a preset limit position, the driving assembly (68) and the positioning detection assembly (69) are electrically connected with the controller (7), and the front side of the mounting seat (61) is provided with a protective cover (610), and the front side of the protective cover (610) is fixedly provided with the controller (7).

2. The drilling apparatus for rivet machining according to claim 1, wherein The clamp assembly (45) comprises: a detachable mounting frame (451) mounted on the bottom mounting interface of the frame type clamp table (42), a pressing block (452) rotatably mounted on the top of the mounting frame (451), and a pneumatic rod (453) rotatably mounted on the inner cavity side wall of the mounting frame (451), wherein the pneumatic rod (453) is electrically connected with the controller (7), and the output end of the pneumatic rod (453) is connected with the bottom of the mounting frame (451) and the bottom of the pressing block (452) through two short connecting rods (454).

3. The drilling apparatus for rivet machining according to claim 2, wherein When the controller (7) drives the output end of the pneumatic rod (453) to extend or retract, the pressing block (452) is driven to rotate through the transmission of the two short connecting rods (454), so as to press or release the workpiece.

4. The drilling apparatus for rivet machining according to claim 3, wherein When the moving seat (41) located below drives the frame type clamp table (42) to move, and the limiting wheel (53) enters the avoiding section (511) from the jacking section (512), the frame type clamp table (42) is lowered to avoid, and when the limiting wheel (53) enters the jacking section (512) on the other side from the avoiding section (511), the frame type clamp table (42) is raised to reset.

5. The drilling apparatus for rivet machining according to claim 4, wherein The drive assembly (68) includes: a first servo motor (681) fixedly installed on the top of the mounting base (61), and the first servo motor (681) is electrically connected to the controller (7). A first pulley (682) is fixedly installed at the output end of the first servo motor (681), and a second pulley (683) is provided at the bottom end of the drive shaft (62). A belt (684) is tensioned and sleeved on the first pulley (682) and the second pulley (683) to form a belt drive mechanism, so that the first servo motor (681) can drive the drive shaft (62) to rotate.

6. The drilling apparatus for rivet machining according to claim 5, wherein The positioning detection component (69) includes: a photoelectric sensor (691) fixedly installed on the rear top of the mounting base (61), the photoelectric sensor (691) being electrically connected to the controller (7), and a reflector (692) fixedly installed on the top of one of the drive linkages (67). The reflector (692) is positioned such that when the moving base (41) moves to a preset limit position, the reflector (692) is located in the detection path of the photoelectric sensor (691), and can reflect the detection signal emitted by the photoelectric sensor (691) back to its receiving end. After receiving the laser signal emitted by itself, the photoelectric sensor (691) sends a position signal to the controller (7).

7. The drilling apparatus for rivet machining according to claim 6, wherein The stabilizing clamping mechanism (9) includes: a support column (91) installed at the left and right ends of the top of the mounting platform (8); a slide groove (92) opened inside the support column (91); a double-ended screw (93) rotatably installed in the inner cavity of the slide groove (92); the two ends of the double-ended screw (93) have opposite thread directions; two sliders (95) are screwed to the upper and lower ends of the double-ended screw (93); both sliders (95) are slidably connected to the slide groove (92); a second servo motor (94) is fixedly installed on the top of the support column (91); the output end of the second servo motor (94) is fixedly connected to the double-ended screw (93). The two second servo motors (94) are electrically connected to the controller (7). The inner side of the slider (95) is provided with a clamping frame (96), and the inner side of the clamping frame (96) is provided with a number of inclined centering blocks (97). The frame fixture table (42) is provided with a positioning part (98) that cooperates with the inclined centering block (97). When the second servo motor (94) drives the double-headed screw (93) to rotate, it drives the two sliders (95) to move towards or away from each other, thereby centering and clamping or releasing the positioning part (98) through the clamping frame (96) and the inclined centering block (97).

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