Study on High-Speed Intermittent Motion Mechanism. Comparison Indexing Cam Mechanism with Servo-System.

In order to realize the technical performance of high speed, high precision, high stability and high reliability for conjugated indexing mechanism with periodic intermittent rotary motion, a two cams structure has been designed, and its geometry size and profile curve was carefully determined. Also the calculation formula of the contour curve for CAM was deduced. Research achievement has been applied to new equipment of enterprise development, the working performance is stable and reliable, the production efficiency raised by 30% compared to the domestic industry. The mechanism has characteristics of simplified structure, improved transmission performance and low cost.

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High-speed sliding-inchworm motion mechanism with expansion-type pneumatic hollow-shaft actuators for in-pipe inspections

Mechatronics ◽

10.1016/j.mechatronics.2018.10.010 ◽

2018 ◽

Vol 56 ◽

pp. 101-114 ◽

Cited By ~ 4

Author(s):

Tomonari Yamamoto ◽

Masashi Konyo ◽

Kenjiro Tadakuma ◽

Satoshi Tadokoro

Keyword(s):

High Speed ◽

Motion Mechanism ◽

Hollow Shaft

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A New Method of Torque Compensation for High Speed Indexing Cam Mechanism

Journal of Mechanical Design ◽

10.1115/1.2829462 ◽

1999 ◽

Vol 121 (2) ◽

pp. 319-323 ◽

Cited By ~ 11

Author(s):

Teng Guilan ◽

Fu Haibo ◽

Zhou Weiyi

Keyword(s):

Kinetic Energy ◽

High Speed ◽

Output Shaft ◽

New Method ◽

Linkage Mechanism ◽

Energy Fluctuation ◽

Positioning Accuracy ◽

Input Shaft ◽

Cam Mechanism

Severe vibration and poor positioning accuracy may occur in an indexing cam mechanism operating at a high speed. Torque fluctuation of the input shaft and the resulting fluctuation of kinetic energy of the mechanism may be the major cause of the vibration. In this paper a method is proposed to minimize the fluctuation by using a so-called “speed-varying flywheel” that produces an opposite kinetic energy fluctuation that can counteract the effect of the energy fluctuation. The flywheel is installed on the output shaft of an additional cam-linkage mechanism. The parameter of the cam-linkage mechanism is optimized. An example is given to demonstrate the effectiveness of this method.

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Adaptive Backstepping Control of Vacuum Servo System Using High-Speed on-off Valves

IEEE Access ◽

10.1109/access.2020.3007208 ◽

2020 ◽

Vol 8 ◽

pp. 129799-129812

Author(s):

Gang Yang ◽

Peng Jiang ◽

Lei Lei ◽

Yong Wu ◽

Jingmin Du ◽

...

Keyword(s):

High Speed ◽

Servo System ◽

Backstepping Control ◽

Adaptive Backstepping ◽

Adaptive Backstepping Control

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EFFECT OF SERVO SYSTEMS ON THE CONTOURING ERRORS IN INDUSTRIAL ROBOTS

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2012-0006 ◽

2012 ◽

Vol 36 (1) ◽

pp. 83-96 ◽

Cited By ~ 10

Author(s):

Mohamed Slamani ◽

Albert Nubiola ◽

Ilian A. Bonev

Keyword(s):

High Speed ◽

Industrial Robot ◽

Statistical Tests ◽

Measurement Instrument ◽

Servo System ◽

Industrial Robots ◽

Structural Vibration ◽

Tool Centre Point ◽

Prediction Capability ◽

Radius Size

Two important aspects of the performance of a servo system, tracking errors and contour errors, significantly affect the accuracy of industrial robots under high-speed motion. Careful tuning of the control parameters in a servo system is essential, if the risk of severe structural vibration and a large contouring error is to be avoided. In this paper, we present an overview of a method to diagnose contouring errors caused by the servo control system of an ABB IRB 1600 industrial robot by measuring the robot’s motion accuracy in a Cartesian circular shape using a double ballbar (DBB) measurement instrument. Tests were carried out at different TCP (tool centre-point) speed and trajectory radii to investigate the main sources of errors that affect circular contouring accuracy. Results show that radius size errors and out-of-roundness are significant. A simple experimental model based on statistical tests was also developed to represent and predict the radius size error. The model was evaluated by comparing its prediction capability in several experiments. An excellent error prediction capability was observed.

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The main features of the 1.56-m telescope and its status quo

Symposium - International Astronomical Union ◽

10.1017/s0074180900151265 ◽

1986 ◽

Vol 118 ◽

pp. 121-122

Author(s):

Wan Lai ◽

Zhu Neng-hong ◽

Wang Lan-juan ◽

Yang Zheng-hua ◽

Zheng Yi-jin

Keyword(s):

High Speed ◽

Servo System ◽

Status Quo ◽

Trigonometric Parallaxes ◽

Comet Halley

This telescope was designed for determining the trigonometric parallaxes of faint stars. The otpical configuration is a Ritchey-Chrétien system and has only a f/10 Cassegrain focus for photographic work.The mounting is a combination of fork and yoke frame which can reduce the flexure due to gravity. A high speed digital servo-system was adopted for controlling and driving the telescope. At present some photographs of Comet Halley have been obtained.

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Sector servo system for high speed seeking and high track density

IEEE Transactions on Magnetics ◽

10.1109/20.92299 ◽

1988 ◽

Vol 24 (6) ◽

pp. 2955-2957 ◽

Cited By ~ 1

Author(s):

T. Yamada ◽

T. Inoue ◽

T. Sugaya

Keyword(s):

High Speed ◽

Servo System ◽

Track Density ◽

High Track

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A New One-Side Finish Machining Method for Profile of Globoidal Indexing Cam in High Speed

Materials Science Forum ◽

10.4028/www.scientific.net/msf.626-627.611 ◽

2009 ◽

Vol 626-627 ◽

pp. 611-616

Author(s):

X.F. Tang ◽

Wei He ◽

Y.S. Liu

Keyword(s):

High Speed ◽

Tool Path ◽

New Method ◽

Practical Calculation ◽

Machined Surface ◽

Finish Machining ◽

Cam Mechanism ◽

Cad Cam ◽

Meshing Characteristics ◽

Path Modification

A new one-side finish machining method for the profile of globoidal indexing cam in high speed, which modifies the tool path of traditional enveloping method, was put forward. The new method is useful for overcoming the defects caused by traditional enveloping method, can realize one-side machining of globoidal indexing cam, can improve the machined surface quality and the meshing characteristics of the cam mechanism. The practical calculation formulas of tool path modification is given, which can be used in developing the CAD/CAM software of the globoidal indexing cam. The new method has great practical value.

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