PATH ACCURACY MEASUREMENT OF INDUSTRIAL ROBOT BASED ON BINOCULAR VISION

2003 ◽  
Vol 39 (05) ◽  
pp. 88 ◽  
Author(s):  
Bo Sui
Keyword(s):  
Binocular Vision ◽  
Industrial Robot ◽  
Accuracy Measurement

High-precision six-degree-of-freedom pose measurement and grasping system for large-size object based on binocular vision

Sensor Review ◽  
2020 ◽  
Vol 40 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Guoyang Wan ◽  
Fudong Li ◽  
Wenjun Zhu ◽  
Guofeng Wang
Keyword(s):  
Binocular Vision ◽  
Industrial Robot ◽  
Robot Vision ◽  
Positioning Accuracy ◽  
Content Type ◽  
High Position ◽  
Large Size ◽  
Positioning Strategy ◽  
Circular Holes ◽  
Six Degree Of Freedom

Purpose The positioning and grasping of large-size objects have always had problems of low positioning accuracy, slow grasping speed and high application cost compared with ordinary small parts tasks. This paper aims to propose and implement a binocular vision-guided grasping system for large-size object with industrial robot. Design/methodology/approach To guide the industrial robot to grasp the object with high position and pose accuracy, this study measures the pose of the object by extracting and reconstructing three non-collinear feature points on it. To improve the precision and the robustness of the pose measuring, a coarse-to-fine positioning strategy is proposed. First, a coarse but stable feature is chosen to locate the object in the image and provide initial regions for the fine features. Second, three circular holes are chosen to be the fine features whose centers are extracted with a robust ellipse fitting strategy and thus determine the precise pose and position of the object. Findings Experimental results show that the proposed system has achieved high robustness and high positioning accuracy of −1 mm and pose accuracy of −0.5 degree. Originality/value It is a high accuracy method that can be used for industrial robot vision-guided and grasp location.

scholarly journals Torque Measurement of High-Precision Reducer for Industrial Robot

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Zhen Yu ◽  
Yuan Zhang
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Measurement Errors ◽  
Industrial Robot ◽  
Industrial Robots ◽  
System Structure ◽  
Torque Measurement ◽  
Accuracy Measurement ◽  
Input And Output

Torque testing is crucial to improve the quality of high-precision reducers—the core component of industrial robots. Herein, a torque-measurement system for a novel vertical measuring instrument is designed. The distance from the torque transducers to the robot reducer is minimized to ensure the shortest measurement chain. The symmetrical system structure improves the overall rigidity, and error compensation can be performed easily. The characteristics of the torque measurement errors due to shaft bending and torsional deformations were also analyzed. A torque calibrator comprising two high-precision torque output systems was used to calibrate torque transducers in the measurement system. Reasonable and practical compensation models based on a backpropagation neural network were developed to accurately obtain the input and output torques of the reducer. As the torque-measurement precision of the reducer detector reached 0.1% over the entire torque range, the instrument can be used for accuracy measurement of the input and output torques of the robot reducer.

Curiosities of Binocular Vision

1913 ◽  
Vol 76 (1964supp) ◽  
pp. 122-123
Author(s):  
Frederic Campbell
Keyword(s):  
Binocular Vision

Design of spline surface vacuum gripper for pick and place robotic arms

2020 ◽  
Vol 4 (2) ◽  
pp. 48-55
Author(s):  
A. S. Jamaludin ◽  
M. N. M. Razali ◽  
N. Jasman ◽  
A. N. A. Ghafar ◽  
M. A. Hadi
Keyword(s):  
Cycle Time ◽  
Industrial Robot ◽  
Annealing Process ◽  
Vacuum Suction ◽  
Robotic Arms ◽  
Custom Made ◽  
Pick And Place ◽  
Manufacturing Procedure ◽  
Production Flexibility ◽  
The Impact

The gripper is the most important part in an industrial robot. It is related with the environment around the robot. Today, the industrial robot grippers have to be tuned and custom made for each application by engineers, by searching to get the desired repeatability and behaviour. Vacuum suction is one of the grippers in Watch Case Press Production (WCPP) and a mechanism to improve the efficiency of the manufacturing procedure. Pick and place are the important process for the annealing process. Thus, by implementing vacuum suction gripper, the process of pick and place can be improved. The purpose of vacuum gripper other than design vacuum suction mechanism is to compare the effectiveness of vacuum suction gripper with the conventional pick and place gripper. Vacuum suction gripper is a mechanism to transport part and which later sequencing, eliminating and reducing the activities required to complete the process. Throughout this study, the process pick and place became more effective, the impact on the production of annealing process is faster. The vacuum suction gripper can pick all part at the production which will lower the loss of the productivity. In conclusion, vacuum suction gripper reduces the cycle time about 20%. Vacuum suction gripper can help lower the cycle time of a machine and allow more frequent process in order to increase the production flexibility.

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