Accuracy Test of Linear motion Link Mechanism

2003 ◽  
Vol 2003.40 (0) ◽  
pp. 225-226
Author(s):  
Yoshiyasu Ishikura ◽  
Makoto Ohya
Keyword(s):  
Linear Motion ◽  
Accuracy Test ◽  
Link Mechanism

Computer Aid of Mechanism Behaviour

2013 ◽  
Vol 440 ◽  
pp. 182-187 ◽  
Author(s):  
Katarina Monkova ◽  
Veronika Fečová ◽  
Zuzana Hutyrová
Keyword(s):  
Kinematic Analysis ◽  
The Body ◽  
Rotary Motion ◽  
Linear Motion ◽  
Computer Aid ◽  
Link Mechanism ◽  
Generate Curve ◽  
Input Parameters ◽  
Real Practice

It is often needed to define the velocity and acceleration of the body or some point of mechanism, if the input parameters of driver are known. As one of the most commonly used mechanisms in manufacturing or real practice can be considered the slotted-link mechanism. This mechanism is the part of the various machines and it has some special configurations created by making link infinite in length. It is often used to transform rotary motion into linear motion. The article deals with the computer aid of mechanism behaviour, specifically there are compared two approaches to the kinematic analysis of mechanism, the possibility to generate curve trajectory of selected point of mechanism or to make its motion envelope. The solution is presented on the mechanism usually used for the sliding feed of the packages in real practice.

Magnetic Linear Motion Mechanism of a 2-Parallel-Finger Hand for Force Operation

2003 ◽  
Vol 15 (6) ◽  
pp. 624-631 ◽  
Author(s):  
Tatsuya Nakamura ◽  
◽  
Zhiqi Liu
Keyword(s):  
Force Control ◽  
Experimental System ◽  
Magnetic Suspension ◽  
Linear Motion ◽  
Motion Mechanism ◽  
Displacement Sensors ◽  
Absolute Positioning ◽  
Link Mechanism ◽  
Mobile Telephones ◽  
Parallel Link

Besides assembling, processes like drilling, cutting and pasting are required in various operations in manufacturing of small sized mechanics such as watches, mobile telephones etc. Force control is essential to those dexterous operations. Also absolute positioning of micro-manipulators is required for their autonomous operations. For this purpose, a linear motion hand with two parallel fingers was proposed. It uses a novel parallel link mechanism for linear motion and controls the endeffector by measuring its position with displacement sensors. It uses magnetic suspension technology so that fine force control is realized. An experimental system composed of two one-finger units is presented. The accuracy of positioning is a few μm with a range of tens mm. The accuracy of force control is 3 mN with a range of hundreds gf. The effectiveness of the proposed hand was verified by the application to drilling and fitting.

Reproduction of Linear Motion with Adaptation for Change in Environmental Position

2012 ◽  
Vol 132 (5) ◽  
pp. 526-533 ◽  
Author(s):  
Noboru Tsunashima ◽  
Seiichiro Katsura
Keyword(s):  
Linear Motion
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