Part automatic detection platform

Abstract

The utility model discloses an automatic part detection platform, which belongs to the technical field of part detection and comprises an industrial mechanical arm, a laser 3D scanner, a scanner clamp, a part detection platform and a main control system. One end of the scanner clamp is fixedly connected with the industrial mechanical arm, the other end of the scanner clamp is detachably connected with the laser 3D scanner, the part detection platform is arranged on one side of the industrial mechanical arm, and a turntable capable of rotating at a constant speed is arranged on the part detection platform; the turntable is used for placing a to-be-tested part; the industrial mechanical arm, the laser 3D scanner and the part detection platform are all electrically connected with the main control system. According to the utility model, the scanner clamp is improved, and the existing handheld laser 3D scanner can be stably connected to the mechanical arm; and meanwhile, the part detection platform is improved, so that the part detection platform has the characteristics of simple structure, uniform rotation and high loading capacity.

Description

Technical Field

[0001] This utility model relates to the field of parts inspection technology, and in particular to an automatic parts inspection platform. Background Technology

[0002] With the rapid development of railways, the automation and informatization of testing equipment have become a major trend. Couplers are the core connecting components between railway locomotives and rolling stock, bearing and transmitting traction and longitudinal impact forces during train operation. Poor anti-jumping performance caused by couplers failing to meet the manufacturer's design specifications is one of the main reasons for automatic coupler separation. Therefore, accurate and consistent coupler dimensions are crucial for meeting the requirements of connection clearance and component interchangeability. However, there has been no good automated testing solution for measuring complex and irregular components such as coupler parts. Traditional coupler part testing methods include manual template testing, namely scribing and template testing. Manual testing suffers from significant accuracy loss and insufficient consistency. For example, if a component has several data points to be tested, several testing gauges and templates are needed, making the process cumbersome and inefficient. Furthermore, many components (such as the coupler tongue) are bulky, requiring manual handling of different positions for testing, increasing the workload of workers. Additionally, slight errors exist in the methods used by each individual and even each instance of observation and use of templates, leading to inconsistent test results and varying accuracy, failing to meet testing requirements. Chinese patent CN202011533959.3 discloses an automated general-purpose metrology part contour detection method, which uses a robotic arm in conjunction with a 3D scanner and a detection turntable to automatically measure the geometric dimensions of the part contour, providing a solution for automated part inspection.

[0003] However, the following technical challenges still exist in the practical implementation of the aforementioned existing technologies:

[0004] 1. When performing automated measurement of parts, most existing 3D scanner products are manually held and are standalone, mature measurement products that cannot be well integrated with robotic arms.

[0005] Second, the inspection turntable in the above-mentioned prior art uses telescopic cylinders, racks and pinions as power sources, which has a relatively complex structure. It is also affected by the stability of the air pressure of the telescopic cylinder and its own accuracy. The inspection turntable cannot guarantee a stable, uniform and slow rotation speed, which is not conducive to the 3D scanner focusing to obtain the contour data of the part and affects the inspection results.

[0006] Therefore, this application provides a new solution to address the technical challenges that objectively exist in existing automated parts inspection devices. Utility Model Content

[0007] This utility model provides an automatic parts inspection platform, which improves the scanner fixture so that the existing handheld laser 3D scanner can be stably connected to the robotic arm; at the same time, it improves the parts inspection platform so that it has the characteristics of simple structure, uniform rotation and high load capacity.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] An automated parts inspection platform includes an industrial robotic arm, a laser 3D scanner, a scanner fixture, a parts inspection platform, and a main control system. One end of the scanner fixture is fixedly connected to the industrial robotic arm, and the other end of the scanner fixture is detachably connected to the laser 3D scanner. The parts inspection platform is arranged on one side of the industrial robotic arm and has a turntable that can rotate at a uniform speed. The turntable is used to place the parts to be inspected. The industrial robotic arm, the laser 3D scanner, and the parts inspection platform are all electrically connected to the main control system.

[0010] Furthermore, the parts inspection platform includes a support base, a fixed disk, a bearing housing, a rotating shaft, a turntable, a drive motor, and a gear transmission component. The fixed disk is fixedly connected to the bottom of the support base, the bearing housing is fixedly connected to the center of the fixed disk, and the rotating shaft is vertically arranged and connected to the bearing housing via a bearing. The turntable and the fixed disk are arranged parallel to each other horizontally, and the top of the rotating shaft is fixedly connected to the center of the turntable. The drive motor is a servo motor, which is fixedly mounted on the fixed disk and is connected to the turntable via the gear transmission component. The drive motor is used to drive the turntable to rotate relative to the fixed disk.

[0011] Furthermore, the gear transmission component includes a drive gear and an internal gear; the internal gear is fixedly connected to the bottom surface of the turntable and coaxially arranged with the center of the turntable; the drive gear is fixedly connected to the shaft of the drive motor; and the drive gear meshes with the internal gear.

[0012] Furthermore, a plurality of casters are provided between the lower end face of the turntable and the upper end face of the fixed plate. The casters are distributed at equal angles around the central axis of the turntable. The connecting seat of each caster is fixedly installed on the lower end face of the turntable, and the wheel of each caster abuts against the fixed plate.

[0013] Furthermore, the scanner fixture includes a cylindrical connecting seat and a fixture body; one end of the cylindrical connecting seat is fixedly connected to the industrial robotic arm, and the other end of the cylindrical connecting seat is fixedly connected to the outer side of one end of the fixture body; the fixture body includes a left clamp and a right clamp, one end of the left clamp and the right clamp are hinged by a pin, and the other ends of the left clamp and the right clamp are detachably connected by a locking buckle.

[0014] Furthermore, the left clamp has an L-shaped structure, and the right clamp has a U-shaped structure. The length of one U-shaped vertical end of the right clamp is half the length of the other U-shaped vertical end. The longer U-shaped vertical end of the right clamp is hinged to the end of the L-shaped vertical end of the left clamp, and the outer side of the longer U-shaped vertical end of the right clamp is fixedly connected to the cylindrical connecting seat. The outer side of the L-shaped horizontal end of the left clamp is provided with a first protrusion, and the first protrusion extends outward to the side facing the L-shaped horizontal end, forming a plug-in portion. The outer side of the shorter U-shaped vertical end of the right clamp is provided with a second protrusion, and the second protrusion is provided with a plug-in hole parallel to the side facing the corresponding U-shaped vertical end. The left clamp flips along the right clamp so that the plug-in portion is inserted into the plug-in hole. One end of the locking buckle is hinged to the first protrusion, and the other end of the locking buckle is fastened to the outer periphery of the second protrusion.

[0015] Furthermore, the locking buckle includes a fixed flap and a U-shaped flap. The bottom outer edge of the U-shaped flap extends downward to form a concave structure. The two vertical ends of the U-shaped flap are hinged to the other side of the first boss. After the U-shaped flap is flipped downward, the horizontal end of the U-shape covers the outer periphery of the second boss. The fixed flap is located between the two vertical ends of the U-shape of the U-shaped flap. One side of the fixed flap is hinged to the side of the first boss located at the insertion part. The other side of the fixed flap is provided with a barb. After the fixed flap is flipped downward, the barb covers the first boss. The middle part of the fixed flap is fixedly connected to the first boss by bolts. The end face of the fixed flap that is hinged to the first boss abuts against the inner side of the horizontal end of the U-shaped flap to prevent the U-shaped flap from flipping upward.

[0016] Furthermore, a first rubber protective sleeve with a matching shape is fixedly connected to the inner side of the left clamp, and a second rubber protective sleeve with a matching shape is fixedly connected to the inner side of the right clamp. When the left clamp and the right clamp are flipped to abut against each other, the first rubber protective sleeve and the second rubber protective sleeve form an "O" shape structure, and the first rubber protective sleeve and the second rubber protective sleeve together clamp and fix the laser 3D scanner.

[0017] The beneficial effects of this utility model are:

[0018] 1) This utility model designs a scanner fixture that can stably connect an existing handheld laser 3D scanner to an industrial robotic arm. The scanner fixture is suitable for most handheld laser 3D scanners, making the implementation of automated parts inspection solutions more convenient. At the same time, in order to solve the problem of the operating accuracy of the parts inspection platform in the prior art, the parts inspection platform designed in this application has a uniform rotation function, which is conducive to the 3D scanner focusing to obtain the contour data of the parts and improving the inspection accuracy.

[0019] 2) The drive motor is a servo motor, which drives the turntable to rotate relative to the fixed disk. Through the high-precision rotation control of the servo motor, the turntable has a uniform and stable rotation speed. Compared with cylinder transmission, the vibration during rotation is smaller and the speed is more uniform, which is beneficial to the focusing of the laser 3D scanner and improves the detection accuracy.

[0020] 3) Several casters are provided between the lower end face of the turntable and the upper end face of the fixed plate. The casters support the turntable and rotate with it, which not only reduces the pressure on the shaft and extends the service life of the bearing, but also increases the load capacity of the turntable and makes it suitable for testing heavier parts.

[0021] 4) The locking buckle can quickly engage or disengage the left and right clamps, making operation convenient. Attached Figure Description

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a perspective view of the overall structure of this utility model;

[0024] Figure 2 This is a perspective view of the parts inspection platform in this utility model without the support base.

[0025] Figure 3 This is a perspective view of the parts inspection platform of this utility model, omitting the support base and fixed plate, viewed from a backward tilt.

[0026] Figure 4 This is a front view of the scanner fixture in this utility model;

[0027] Figure 5 This is a perspective view of the scanner fixture in this utility model;

[0028] Attached image labels:

[0029] 1-Industrial robotic arm, 2-Laser 3D scanner, 3-Scanner fixture, 4-Parts inspection platform, 41-Support base, 42-Fixed plate, 43-Bearing seat, 44-Rotating shaft, 45-Turntable, 46-Drive motor, 47-Gear transmission component, 48-Universal wheel, 471-Drive gear, 472-Internal gear, 31-Columnar connecting seat, 32-Clamping body, 321-Left clamp, 322-Right clamp; 323-Pin, 324-Locking buckle, 3211-First boss, 3221-Second boss, 3241-Fixed flap, 3242-U-shaped flap, 325-First rubber protective sleeve, 326-Second rubber protective sleeve. Detailed Implementation

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

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Reference Figures 1 to 5As shown, an automatic parts inspection platform includes an industrial robotic arm 1, a laser 3D scanner 2, a scanner fixture 3, a parts inspection platform 4, and a main control system. One end of the scanner fixture 3 is fixedly connected to the industrial robotic arm 1, and the other end of the scanner fixture 3 is detachably connected to the laser 3D scanner 2. The parts inspection platform 4 is arranged on one side of the industrial robotic arm 1, and a turntable 45 that can rotate at a uniform speed is provided on the parts inspection platform 4. The turntable is used to place the parts to be inspected. The industrial robotic arm 1, the laser 3D scanner 2, and the parts inspection platform 4 are all electrically connected to the main control system. Since the laser 3D scanner 2 is an existing and mature product with an independent structure, it lacks a structure for interconnection with the industrial robotic arm 1. In particular, handheld laser 3D scanners are usually operated by a person holding the handle. This utility model designs a scanner clamp 3, which can stably connect the existing handheld laser 3D scanner to the industrial robotic arm 1. The scanner clamp 3 is suitable for most handheld laser 3D scanners, making the implementation of automated parts inspection schemes more convenient. At the same time, in order to solve the problem of the operating accuracy of the parts inspection platform 4 in the prior art, the parts inspection platform 4 designed in this application has a uniform speed rotation function, which is conducive to the 3D scanner focusing to obtain the contour data of the parts and improving the inspection accuracy.

[0034] Please refer to Figures 1 to 3As shown, the parts inspection platform 4 includes a support base 41, a fixed plate 42, a bearing seat 43, a rotating shaft 44, a turntable 45, a drive motor 46, and a gear transmission component 47. The support base 41 includes a square frame and support legs distributed at the four corners of the bottom of the frame. The overall structure is assembled by welding stainless steel square tubes. The fixed plate 42 is fixedly connected to the bottom of the support base 41 by bolts. The bearing seat 43 is fixedly connected to the center of the fixed plate 42. The rotating shaft 44 is vertically arranged and connected to the bearing seat 43 through a bearing. The turntable 45 and the fixed plate 42 are arranged parallel to each other horizontally. The top of the rotating shaft 44 is fixedly connected to the center of the turntable 45. The drive motor 46 is a servo motor, which is fixedly mounted on the fixed disk 42. The main shaft of the drive motor 46 extends between the fixed disk and the turntable. The drive motor 46 is connected to the turntable 45 via the gear transmission component 46. The drive motor 46 drives the turntable 45 to rotate relative to the fixed disk 42. Through the high-precision rotation control of the servo motor, the turntable 45 has a uniform and stable rotation speed. Compared with cylinder transmission, the vibration during rotation is smaller and the speed is more uniform, which is beneficial to the focusing of the laser 3D scanner 2 and improves the detection accuracy. The gear transmission component 47 adopts an internal meshing transmission structure, which includes a drive gear 471 and an internal gear 472. The internal gear 472 is fixedly connected to the bottom surface of the turntable 45 and is coaxially arranged with the center of the turntable 45. The drive gear 472 is fixedly connected to the rotating shaft of the drive motor 46, and the drive gear 471 meshes with the internal gear 472. A plurality of casters 48 are provided between the lower end face of the turntable 45 and the upper end face of the fixed plate 42. The casters 48 are distributed at equal angles around the central axis of the turntable. The connecting seat of each caster 48 is fixedly installed on the lower end face of the turntable 45. The wheel of each caster 48 abuts against the fixed plate 42. The casters are arranged on the outer periphery of the internal gear. The casters 48 support the turntable 45 and can rotate with the turntable 45. This not only reduces the pressure on the shaft and improves the service life of the bearing, but also increases the load capacity of the turntable 45, making it suitable for inspecting heavier parts.

[0035] Please refer to Figure 4 and Figure 5As shown, the scanner fixture 3 includes a cylindrical connecting seat 31 and a fixture body 32; one end of the cylindrical connecting seat 31 is provided with a flange, which is fixedly connected to the industrial robotic arm 1 by bolts, and the other end of the cylindrical connecting seat 31 is also fixedly connected to the outer side of one end of the fixture body 32 by a flange; the fixture body 32 includes a left clamp 321 and a right clamp 322, one end of the left clamp 321 and the right clamp 322 are hinged by a pin 323, and the other end of the left clamp 321 and the right clamp 322 are detachably connected by a locking buckle 324. The left clamp 321 has an L-shaped structure, and the right clamp 322 has a U-shaped structure. One vertical U-shaped end of the right clamp 322 is half the length of the other vertical U-shaped end. The longer vertical U-shaped end of the right clamp 322 is hinged to the L-shaped end of the left clamp 322. When the left clamp 322 is flipped so that its L-shaped horizontal end abuts against the shorter U-shaped vertical end of the right clamp, it forms a rectangular structure, clamping the laser 3D scanner within it. The outer side of the longer U-shaped vertical end of the right clamp 322 is fixedly connected to the cylindrical connecting seat 31. A first protrusion 3211 is provided on the outer side of the L-shaped horizontal end of the left clamp 321. The first protrusion 3211 extends outward to the side corresponding to the L-shaped horizontal end, forming a plug-in portion (not shown in the figure); the right clamp 322 has a second protrusion 3221 extending outward from the outer side of its shorter U-shaped vertical end, and the second protrusion 3221 has a plug-in hole (not shown in the figure) parallel to the side corresponding to the U-shaped vertical end; the left clamp 321 flips along the right clamp 322 so that the plug-in portion is inserted into the plug-in hole; one end of the locking buckle 324 is hinged to the first protrusion 3211, and the other end of the locking buckle 324 is fastened to the outer periphery of the second protrusion 3221.

[0036] The locking buckle 324 includes a fixing flap 3241 and a U-shaped flap 3242. The outer edge of the bottom surface of the U-shaped flap 3242 extends downward to form a concave structure. The two vertical ends of the U-shaped flap 3242 are hinged to the other side of the first protrusion 3221. After the U-shaped flap 3242 is flipped downward, the horizontal U-shaped end covers the outer periphery of the second protrusion 3221. The fixing flap 3241 is located between the two U-shaped vertical ends of the U-shaped flap 3242. One side of the fixing flap 3241 is hinged to the side of the first protrusion 3211 located at the insertion part. The fixed flap 3241 has a barb on its other side. When the fixed flap 3241 is flipped downwards, the barb covers the first protrusion. The middle part of the fixed flap 3241 is fixedly connected to the first protrusion 3211 by bolts. The bolts here can be wing bolts. The end face of the fixed flap 3241 that is hinged to the first protrusion 3211 abuts against the inner side of the horizontal end of the U-shaped flap 3242 to prevent the U-shaped flap 3242 from flipping upwards. This ensures that the U-shaped flap 3242 can always cover and lock the outer periphery of the second protrusion 3221, keeping the left and right clamps in a clamped state. To release, simply remove the bolts on the fixed flap 3241 and pry the fixed flap up with your fingers to allow the U-shaped flap 3242 to flip upwards, releasing the second protrusion 3221 and allowing the left and right clamps to open. The locking buckle 324 is designed to allow the left clamp 321 and the right clamp 322 to be quickly engaged or disengaged, making operation convenient.

[0037] To protect the handle of the laser 3D scanner 2, a first rubber protective sleeve 325 with a matching shape is fixedly connected to the inner side of the left clamp 321, and a second rubber protective sleeve 326 with a matching shape is fixedly connected to the inner side of the right clamp 322. When the left clamp 325 and the right clamp 326 are flipped to abut against each other, the first rubber protective sleeve 325 and the second rubber protective sleeve 326 form an "O" shape structure, and the first rubber protective sleeve 325 and the second rubber protective sleeve 326 together clamp and fix the handle of the laser 3D scanner 2.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. An automated parts inspection platform, comprising an industrial robotic arm and a laser 3D scanner; characterized in that, It also includes a scanner fixture, a parts inspection platform, and a main control system; one end of the scanner fixture is fixedly connected to the industrial robotic arm, and the other end of the scanner fixture is detachably connected to the laser 3D scanner; the parts inspection platform is arranged on one side of the industrial robotic arm, and the parts inspection platform is provided with a turntable that can rotate at a uniform speed; the turntable is used to place the parts to be tested; the industrial robotic arm, the laser 3D scanner, and the parts inspection platform are all electrically connected to the main control system.

2. The automatic parts inspection platform according to claim 1, characterized in that, The parts inspection platform includes a support base, a fixed disk, a bearing housing, a rotating shaft, a turntable, a drive motor, and a gear transmission component. The fixed disk is fixedly connected to the bottom of the support base, and the bearing housing is fixedly connected to the center of the fixed disk. The rotating shaft is vertically arranged and connected to the bearing housing via a bearing. The turntable and the fixed disk are arranged parallel to each other horizontally, and the top of the rotating shaft is fixedly connected to the center of the turntable. The drive motor is a servo motor, which is fixedly mounted on the fixed disk and is connected to the turntable via the gear transmission component. The drive motor is used to drive the turntable to rotate relative to the fixed disk.

3. The automatic parts inspection platform according to claim 2, characterized in that, The gear transmission component includes a drive gear and an internal gear; the internal gear is fixedly connected to the bottom surface of the turntable and is coaxially arranged with the center of the turntable; the drive gear is fixedly connected to the shaft of the drive motor; and the drive gear meshes with the internal gear.

4. The automatic parts inspection platform according to claim 2, characterized in that, A plurality of casters are provided between the lower end face of the turntable and the upper end face of the fixed plate. The casters are distributed at equal angles around the central axis of the turntable. The connecting seat of each caster is fixedly installed on the lower end face of the turntable, and the wheel of each caster abuts against the fixed plate.

5. The automatic parts inspection platform according to claim 1, characterized in that, The scanner fixture includes a cylindrical connecting seat and a fixture body; one end of the cylindrical connecting seat is fixedly connected to the industrial robotic arm, and the other end of the cylindrical connecting seat is fixedly connected to the outer side of one end of the fixture body; the fixture body includes a left clamp and a right clamp, one end of the left clamp and the right clamp are hinged by a pin, and the other ends of the left clamp and the right clamp are detachably connected by a locking buckle.

6. The automatic parts inspection platform according to claim 5, characterized in that, The left clamp has an L-shaped structure, and the right clamp has a U-shaped structure. The length of one U-shaped vertical end of the right clamp is half the length of the other U-shaped vertical end. The longer U-shaped vertical end of the right clamp is hinged to the end of the L-shaped vertical end of the left clamp, and the outer side of the longer U-shaped vertical end of the right clamp is fixedly connected to the cylindrical connecting seat. The outer side of the L-shaped horizontal end of the left clamp is provided with a first protrusion, and the first protrusion extends outward to the side facing the L-shaped horizontal end, forming a plug-in portion. The outer side of the shorter U-shaped vertical end of the right clamp is provided with a second protrusion, and the second protrusion is provided with a plug-in hole parallel to the side facing the corresponding U-shaped vertical end. The left clamp flips along the right clamp so that the plug-in portion is inserted into the plug-in hole. One end of the locking buckle is hinged to the first protrusion, and the other end of the locking buckle is fastened to the outer periphery of the second protrusion.

7. The automatic parts inspection platform according to claim 6, characterized in that, The locking buckle includes a fixed flap and a U-shaped flap. The bottom outer edge of the U-shaped flap extends downward to form a concave structure. The two vertical ends of the U-shaped flap are hinged to the other side of the first boss. After the U-shaped flap is flipped downward, the horizontal end of the U-shape covers the outer periphery of the second boss. The fixed flap is located between the two vertical ends of the U-shape of the U-shaped flap. One side of the fixed flap is hinged to the side of the first boss located at the insertion part. The other side of the fixed flap is provided with a barb. After the fixed flap is flipped downward, the barb covers the first boss. The middle part of the fixed flap is fixedly connected to the first boss by bolts. The end face of the fixed flap that is hinged to the first boss abuts against the inner side of the horizontal end of the U-shaped flap to prevent the U-shaped flap from flipping upward.

8. The automatic parts inspection platform according to claim 5, characterized in that, A first rubber protective sleeve with a matching shape is fixedly connected to the inner side of the left clamp, and a second rubber protective sleeve with a matching shape is fixedly connected to the inner side of the right clamp. When the left clamp and the right clamp are flipped to abut against each other, the first rubber protective sleeve and the second rubber protective sleeve form an "O" shape structure, and the first rubber protective sleeve and the second rubber protective sleeve together clamp and fix the laser 3D scanner.

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