Workpiece tolerance sorting machine

Abstract

The invention discloses a workpiece tolerance sorting machine, relates to the technical field of tolerance detection, and is used for solving the problems of low precision and low efficiency of the existing tolerance detection technology, the workpiece tolerance sorting machine comprises a cabinet body, a visual detection mechanism and a sorting robot, and the visual detection mechanism and the sorting robot are arranged on the cabinet body; the visual detection mechanism comprises an optical glass disc, a fixed table top, a removing mechanism and a servo motor, a connecting cylinder is arranged at the bottom of the fixed table top, a bottom surface is arranged at the bottom of the connecting cylinder, and a middle hole allowing the connecting cylinder to penetrate through is formed in the middle of the optical glass disc; a rotary transition seat and a hollow rotary platform are arranged outside the connecting cylinder; a connecting frame is arranged on the cabinet body, a top visual camera and a bottom visual camera are arranged on the connecting frame, the tolerance sorting machine is used for sorting, the automation degree is high, the detection precision is high, the sorting efficiency is high, and equipment is stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of tolerance detection, and in particular to a workpiece tolerance sorting machine. Background Art

[0002] Tolerance testing is a process of workpiece quality inspection. In high-precision manufacturing fields such as aerospace, automobile manufacturing, and electronic equipment, the tolerance requirements are extremely strict. Products in these industries usually require a high degree of precision and reliability. Minor dimensional deviations may lead to serious consequences, such as: product performance may be reduced, affecting its normal function; assembly difficulties, increased production complexity and costs; and may even bring safety hazards, endangering the life and property safety of users. Therefore, tolerance testing is very important, and the accuracy of tolerance testing directly affects product quality.

[0003] Traditional tolerance inspection mainly relies on manually operated simple measuring tools, such as calipers and micrometers. This method has obvious disadvantages. On the one hand, it is inefficient and takes a lot of time when a large number of workpieces need to be inspected. On the other hand, the measurement results are easily affected by human factors. Different inspectors may have different measurement results due to differences in operating habits and experience, making it difficult to ensure accuracy.

[0004] Therefore, in view of the shortcomings of the above scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, a workpiece tolerance sorting machine is specially provided to solve the problem of low accuracy and low efficiency of existing tolerance detection technology. Summary of the invention

[0005] The purpose of the present invention is to provide a workpiece tolerance sorting machine. The design concept and innovation of this scheme mainly lie in: utilizing the transparency of the optical glass plate and combining it with the accuracy of vision to improve the efficiency and accuracy of tolerance sorting, improve the sorting quality of the automation degree of sorting, and solve the problem of low accuracy and low efficiency of existing tolerance detection technology.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A workpiece tolerance sorting machine comprises a cabinet, a visual inspection mechanism and a sorting robot, wherein the visual inspection mechanism and the sorting robot are arranged on the cabinet;

[0008] The visual inspection mechanism comprises an optical glass plate, a fixed table, a rejection mechanism and a servo motor, wherein a connecting cylinder is arranged at the bottom of the fixed table, a bottom surface is arranged at the bottom of the connecting cylinder, a middle hole for the connecting cylinder to pass through is arranged at the middle of the optical glass plate, a rotating transition seat and a hollow rotating platform are arranged outside the connecting cylinder, the hollow rotating platform is arranged above the bottom surface, the rotating transition seat is arranged between the hollow rotating platform and the optical glass plate, the servo motor is used to drive the hollow rotating platform, and the rejection mechanism is arranged on the fixed table;

[0009] The sorting robot comprises a robot fixing plate and a fixing robot, wherein the robot fixing plate is mounted on a cabinet, the six-axis robot is arranged on the robot fixing plate, the six-axis robot comprises a gripper cylinder and a robot vision camera, and a gripper is arranged at the end of the gripper cylinder;

[0010] A connecting frame is arranged on the cabinet, and a top visual camera and a bottom visual camera are arranged on the connecting frame. The top visual camera and the bottom visual camera are arranged at the top and the bottom of the optical glass plate respectively.

[0011] As a preferred embodiment, the rejection mechanism includes a cylinder fixing plate, a cylinder is arranged on the cylinder fixing plate, and a push plate is connected to the piston end of the cylinder.

[0012] As a preferred embodiment, a linear bearing is arranged on the cylinder fixing plate, a guide rod parallel to the cylinder is connected to the push plate, and the guide rod is slidably connected to the linear bearing.

[0013] As a preferred embodiment, a support shaft is provided on the fixed table top, the support shaft is connected to a first connecting block, the first connecting block is connected to the second connecting block by the first connecting shaft, and the second connecting block is connected to the cylinder fixing plate by the second connecting shaft.

[0014] As a preferred implementation manner, the top vision camera is equipped with a light source, and the bottom vision camera is equipped with a light source.

[0015] The present invention mainly utilizes visual inspection technology and robot sorting technology to perform tolerance inspection on the size, shape and the like of workpieces, and separates qualified products from unqualified products with the help of a rejection mechanism.

[0016] Among them, the visual inspection part uses the top visual camera (and lens light source) and the bottom visual camera (and lens light source) to take pictures and analyze images of the rotating workpiece from the top and bottom directions, and uses the set image processing algorithm to detect whether the size, shape and other parameters of the workpiece are within the specified tolerance range; when the visual inspection system finds unqualified workpieces, it triggers the rejection mechanism, and the cylinder drives the push plate to remove the unqualified workpiece from the optical glass plate; with the assistance of vision and its light source, the six-axis robot places the qualified workpiece at the designated position according to the preset program.

[0017] The use of this tolerance sorting machine for sorting reduces the degree of human participation and has a high degree of automation. It not only has high detection accuracy, but also high sorting efficiency, and the equipment is stable and reliable.

[0018] This equipment has a high degree of automation and can achieve one-button start and automatic operation, reducing manual intervention and improving production safety and reliability.

[0019] This solution combines visual inspection with optical glass to accurately measure the tolerances of the upper and lower surfaces of the workpiece at the same time. The visual inspection system uses a high-resolution camera and an image processing algorithm that is set according to needs. It can accurately identify tiny tolerances and greatly improve the accuracy of inspection.

[0020] The rejection mechanism is installed above the workpiece and remains stationary when the workpiece moves. This design makes the rejection process of unqualified products faster and more accurate. When the visual inspection system finds unqualified workpieces, the rejection mechanism can respond immediately and remove them from the production line without affecting the inspection and sorting of subsequent workpieces.

[0021] At the same time, the fast grabbing and placing actions of the sorting robot further improve the efficiency of sorting. In actual production, the equipment can process a large number of workpieces in a short time, greatly improving the sorting efficiency.

[0022] The uniform motion of the workpiece, the accurate recognition of the visual inspection system and the precise action of the rejection mechanism work together to ensure the long-term stable operation of the equipment.

[0023] The combination of visual inspection and optical glass, as well as the automated sorting design of the rejection mechanism, is not only suitable for tolerance sorting of workpieces, but also provides new ideas and methods for the inspection and sorting of other similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the sorting robot of the present invention;

[0027] Figure 3 It is a partial structural schematic diagram of the optical glass plate of the present invention;

[0028] Figure 4 for Figure 3 Schematic cross-sectional view of ;

[0029] Figure 5 It is a partial cross-sectional schematic diagram of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the rejecting mechanism of the present invention.

[0031] In the figure, 1-visual detection mechanism; 2-cabinet; 3-sorting robot; 4-robot visual camera; 5-gripper cylinder; 6-gripper; 7-six-axis robot; 8-robot fixed plate; 9-rejection mechanism; 10-top visual camera; 11-bottom visual camera; 12-connecting frame; 13-fixed table; 14-optical glass plate; 15-servo motor; 16-connecting cylinder; 17-hollow rotating platform; 18-bottom surface; 19-rotating transition seat; 20-second connecting block; 21-second connecting shaft; 22-cylinder; 23-linear bearing; 24 cylinder fixed plate; 25-guide rod; 26-push plate; 27-first connecting shaft; 28-first connecting block; 29-support shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0035] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The purpose of the present invention is to provide a workpiece tolerance sorting machine. The design concept and innovation of this scheme mainly lie in: utilizing the transparency of the optical glass plate and combining it with the accuracy of vision to improve the efficiency and accuracy of tolerance sorting, improve the sorting quality of the automation degree of sorting, and solve the problem of low accuracy and low efficiency of existing tolerance detection technology.

[0037] See also Figure 1-Figure 6 , a workpiece tolerance sorting machine, comprising a cabinet 2, a visual inspection mechanism 1 and a sorting robot 3, wherein the visual inspection mechanism 1 and the sorting robot 3 are arranged on the cabinet 2;

[0038] The visual inspection mechanism 1 includes an optical glass plate 14, a fixed table 13, a rejection mechanism 9 and a servo motor 15. A connecting cylinder 16 is provided at the bottom of the fixed table 13, and a bottom surface 18 is provided at the bottom of the connecting cylinder 16. A middle hole for the connecting cylinder 16 to pass through is provided in the middle of the optical glass plate 14. A rotating transition seat 19 and a hollow rotating platform 17 are provided outside the connecting cylinder 16. The hollow rotating platform 17 is provided above the bottom surface 18. The rotating transition seat 19 is provided between the hollow rotating platform 17 and the optical glass plate 14. The servo motor 15 is used to drive the hollow rotating platform 17. The rejection mechanism 9 is provided on the fixed table 13.

[0039] The sorting robot 3 includes a robot fixing plate 8 and a fixing robot. The robot fixing plate 8 is installed on the cabinet 2. The six-axis robot 7 is arranged on the robot fixing plate 8. The six-axis robot 7 includes a gripper cylinder 5 and a robot vision camera 4. The end of the gripper cylinder 5 is provided with a gripper 6.

[0040] A connecting frame 12 is disposed on the cabinet 2 , and a top visual camera 10 and a bottom visual camera 11 are disposed on the connecting frame 12 . The top visual camera 10 and the bottom visual camera 11 are disposed at the top and the bottom of the optical glass plate 14 , respectively.

[0041] The equipment can quickly and accurately sort the tolerance of workpieces, greatly improving production efficiency. Compared with the traditional manual sorting method, the equipment can save a lot of manpower and time costs, bringing higher economic benefits to the enterprise.

[0042] High-precision detection and efficient sorting ensure the stable and reliable quality of the workpiece. Unqualified products can be removed in time to avoid mixing with qualified products, thus improving the overall quality level of the product.

[0043] The equipment is easy to operate and has a high degree of automation, which reduces the technical requirements for operators. At the same time, the equipment has low maintenance costs, and the fault self-diagnosis function can detect and solve problems in a timely manner, ensuring the long-term stable operation of the equipment.

[0044] The rejecting mechanism 9 comprises a cylinder fixing plate 24 , on which a cylinder 22 is arranged, and a push plate 26 is connected to the piston end of the cylinder 22 .

[0045] A linear bearing 23 is disposed on the cylinder fixing plate 24 , and a guide rod 25 parallel to the cylinder 22 is connected to the push plate 26 , and the guide rod 25 is slidably connected to the linear bearing 23 .

[0046] A support shaft 29 is provided on the fixed table 13 , and the support shaft 29 is connected to a first connection block 28 . The first connection block 28 is connected to the second connection block 20 via a first connection shaft 27 , and the second connection block 20 is connected to the cylinder fixing plate 24 via a second connection shaft 21 .

[0047] The top vision camera 10 is equipped with a light source, and the bottom vision camera 11 is equipped with a light source.

[0048] in, Figure 4 and Figure 5 It shows the internal structure from different angles to facilitate understanding.

[0049] The present invention mainly utilizes visual inspection technology and robot sorting technology to perform tolerance inspection on the size, shape and the like of the workpiece, and separates qualified products from unqualified products with the help of a rejection mechanism 9 .

[0050] Among them, the visual inspection part uses the top visual camera 10 (and lens light source) and the bottom visual camera 11 (and lens light source) to take pictures and analyze images of the rotating workpiece from the top and bottom directions, and uses the set image processing algorithm to detect whether the size, shape and other parameters of the workpiece are within the specified tolerance range; when the visual inspection system finds unqualified workpieces, it triggers the rejection mechanism 9, and the cylinder 22 drives the push plate 26 to remove the unqualified workpiece from the optical glass plate 14; the six-axis robot 7, with the assistance of vision and its light source, places the qualified workpiece at the specified position according to the preset program.

[0051] The specific process of implementing this plan is as follows:

[0052] Loading: Place the workpiece to be sorted on the optical glass plate 14. Manual loading or an automated loading system can be used to ensure that the workpiece is accurately and stably placed on the optical glass plate 14.

[0053] Visual inspection: After starting the equipment, the servo motor 15 drives the hollow rotating platform 17 to rotate, driving the workpiece on the optical glass disk 14 to rotate at a uniform speed; the top visual camera 10 and lens light source and the bottom visual camera 11 and lens light source simultaneously take pictures of the rotating workpiece, and the camera transmits the captured image to the image processing system coordinated with it for real-time analysis and inspection; the image processing system determines whether the size, shape and other parameters of the workpiece are qualified according to the preset tolerance standards; if an unqualified workpiece is detected, the system will record its position information and send a signal to the rejection mechanism 9.

[0054] Unqualified removal: When the removal mechanism 9 receives the signal, the cylinder 22 is activated to drive the push plate 26 to remove the unqualified workpiece from the optical glass plate 14.

[0055] Sorting robot grasping: The six-axis robot 7 is firmly mounted on the robot fixing plate 8, ready for grasping operations at any time; the robot is guided by visual positioning during grasping, and the workpiece stops when the robot grasps; when the visual inspection system confirms that the workpiece is qualified, the robot accurately locates the qualified workpiece with the assistance of vision and its light source.

[0056] Placement stage: After the robot grabs the qualified workpiece, it moves it to the designated location according to the preset program. It can be on the conveyor belt of the next process or in the finished product collection container. The robot can grab multiple workpieces at a time and place them in different locations according to the grabbing order and inspection records. The visual lens distinguishes A-grade products, B-grade products, and C-grade products according to the measured tolerance range, and the robot performs sorting.

[0057] The use of this tolerance sorting machine for sorting reduces the degree of human participation and has a high degree of automation. It not only has high detection accuracy, but also high sorting efficiency, and the equipment is stable and reliable.

[0058] This equipment has a high degree of automation and can achieve one-button start and automatic operation, reducing manual intervention and improving production safety and reliability.

[0059] This solution combines visual inspection with optical glass to accurately measure the tolerances of the upper and lower surfaces of the workpiece at the same time. The visual inspection system uses a high-resolution camera and an image processing algorithm that is set according to needs. It can accurately identify tiny tolerances and greatly improve the accuracy of inspection.

[0060] The rejection mechanism 9 is installed above the workpiece and remains stationary when the workpiece moves. This design makes the rejection process of unqualified products faster and more accurate. When the visual inspection system finds an unqualified workpiece, the rejection mechanism 9 can respond immediately and remove it from the production line without affecting the subsequent inspection and sorting of workpieces.

[0061] At the same time, the fast grabbing and placing action of the sorting robot 3 further improves the efficiency of sorting. In actual production, the device can process a large number of workpieces in a short time, greatly improving the sorting efficiency.

[0062] The uniform motion of the workpiece, the accurate recognition of the visual inspection system and the precise action of the rejection mechanism work together to ensure the long-term stable operation of the equipment.

[0063] The combination of visual inspection and optical glass, as well as the automated sorting design of the rejection mechanism, is not only suitable for tolerance sorting of workpieces, but also provides new ideas and methods for the inspection and sorting of other similar products.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A workpiece tolerance sorting machine, characterized in that: It includes a cabinet, a visual inspection mechanism and a sorting robot, wherein the visual inspection mechanism and the sorting robot are arranged on the cabinet; The visual inspection mechanism includes an optical glass plate, a fixed table, a rejection mechanism and a servo motor. A connecting cylinder is provided at the bottom of the fixed table, and a bottom surface is provided at the bottom of the connecting cylinder. A middle hole for the connecting cylinder to pass through is provided in the middle of the optical glass plate. A rotating transition seat and a hollow rotating platform are provided outside the connecting cylinder. The hollow rotating platform is provided above the bottom surface. The rotating transition seat is provided between the hollow rotating platform and the optical glass plate. The servo motor is used to drive the hollow rotating platform. The rejection mechanism is provided on the fixed table. The sorting robot comprises a robot fixing plate and a fixing robot, wherein the robot fixing plate is mounted on a cabinet, the six-axis robot is arranged on the robot fixing plate, the six-axis robot comprises a gripper cylinder and a robot vision camera, and a gripper is arranged at the end of the gripper cylinder; A connecting frame is arranged on the cabinet, and a top visual camera and a bottom visual camera are arranged on the connecting frame. The top visual camera and the bottom visual camera are arranged at the top and the bottom of the optical glass plate respectively.

2. A workpiece tolerance sorting machine according to claim 1, characterized in that: The rejecting mechanism comprises a cylinder fixing plate, on which a cylinder is arranged, and a push plate is connected to a piston end of the cylinder.

3. A workpiece tolerance sorting machine according to claim 2, characterized in that: A linear bearing is arranged on the cylinder fixing plate, a guide rod parallel to the cylinder is connected to the push plate, and the guide rod is slidably connected to the linear bearing.

4. A workpiece tolerance sorting machine according to claim 3, characterized in that: A support shaft is arranged on the fixed table, and the support shaft is connected with a first connection block, the first connection block is connected with a second connection block by a first connection shaft, and the second connection block is connected with a cylinder fixing plate by a second connection shaft.

5. A workpiece tolerance sorting machine according to claim 1, characterized in that: The top vision camera is equipped with a light source, and the bottom vision camera is equipped with a light source.

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