Search results

1 – 3 of 3
To view the access options for this content please click here
Article
Publication date: 27 February 2007

Arne Burisch, Jan Wrege, Annika Raatz, Jürgen Hesselbach and Reinhard Degen

Until now, the size range of most machines for precision assembly was much larger than the size of the pieces to be handled or the necessary workspace. Flexibly scalable…

Downloads
1038

Abstract

Purpose

Until now, the size range of most machines for precision assembly was much larger than the size of the pieces to be handled or the necessary workspace. Flexibly scalable miniaturised production machines can help to develop much more flexible micro production systems. The paper aims to describe the development of a micro‐parallel‐SCARA robot adapted in size to MEMS products.

Design/methodology/approach

The robot consists of a miniaturised parallel structure, which provides a high level of accuracy in a workspace of 60 × 45 × 20 mm3. It has a base area of 130 × 170 mm2 and offers four degrees of freedom.

Findings

Based on simulations, the degree of miniaturisation in terms of a smaller structure and a high level of accuracy is determined. The results show that a miniaturised hybrid robot with a plane parallel structure driven by miniaturised zero‐backlash gears and electric motors can reach a theoretical repeatability better than 1 μm.

Research limitations/implications

The first prototype provides good prospects that the concept will be used in a visionary desktop‐factory. As regards the accuracy parameters of the robot, there will be further efforts to optimise the robot's structure and drive mechanism.

Practical implications

The repeatability of this first prototype is better than 14 μm. A better stiffness of optimised micro‐gears and joints of the structure will guarantee a much better repeatability.

Originality/value

The paper illustrates that the Parvus is one of the smallest industrial robots for micro assembly equipped with a full range of functionalities like conventional industrial robots.

Details

Assembly Automation, vol. 27 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

To view the access options for this content please click here
Article
Publication date: 1 March 2004

Jürgen Hesselbach, Jan Wrege, Annika Raatz and Oliver Becker

This paper presents a concept for a micro‐assembly station and shows different possibilities for increasing the positioning accuracy. The main part of the station consists…

Downloads
1496

Abstract

This paper presents a concept for a micro‐assembly station and shows different possibilities for increasing the positioning accuracy. The main part of the station consists of a spatial parallel structure with three translational degrees of freedom. An additional rotational axis is integrated into the working platform. This structure is constructed with low friction joints, which are nearly free of backlash. The construction of these high precision joints is presented and the characteristics of the robot such as workspace and resolution are discussed. After this an approach for increasing the accuracy of parallel robots by integrating flexure hinges into the structure is described.

Details

Assembly Automation, vol. 24 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

To view the access options for this content please click here
Article
Publication date: 1 September 1999

Jane Whitney Gibson, Richard M. Hodgetts and Jorge M. Herrera

This paper discusses the lives and contributions of five key members of the Management History Division: Arthur G. Bedeian; Alfred A. Bolton; James C. Worthy (now…

Downloads
2950

Abstract

This paper discusses the lives and contributions of five key members of the Management History Division: Arthur G. Bedeian; Alfred A. Bolton; James C. Worthy (now deceased); Charles D. Wrege; and Daniel A. Wren. Each has proved himself a teacher and intellectual leader in matters of fundamental concern to management history.

Details

Journal of Management History, vol. 5 no. 6
Type: Research Article
ISSN: 1355-252X

Keywords

1 – 3 of 3