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Article
Publication date: 7 June 2021

Changyang Li, Huapeng Wu, Harri Eskelinen and Haibiao Ji

This paper aims to present a detailed mechanical design of a seven-degrees-of-freedom mobile parallel robot for the tungsten inert gas (TIG) welding and machining processes in…

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Abstract

Purpose

This paper aims to present a detailed mechanical design of a seven-degrees-of-freedom mobile parallel robot for the tungsten inert gas (TIG) welding and machining processes in fusion reactor. Detailed mechanical design of the robot is presented and both the kinematic and dynamic behaviors are studied.

Design/methodology/approach

First, the model of the mobile parallel robot was created in computer-aided design (CAD) software, then the simulation and optimization of the robot were completed to meet the design requirements. Then the robot was manufactured and assembled. Finally, the machining and tungsten inert gas (TIG) welding tests were performed for validation.

Findings

Currently, the implementation of the robot system has been successfully carried out in the laboratory. The excellent performance has indicated that the robot’s mechanical and software designs are suitable for the given tasks. The quality and accuracy of welding and machining has reached the requirements.

Originality/value

This mobile parallel industrial robot is particularly used in fusion reactor. Furthermore, the structure of the mobile parallel robot can be optimized for different applications.

Details

Industrial Robot: the international journal of robotics research and application, vol. 48 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

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Article
Publication date: 11 February 2014

Sana El Harbi, Alistair R. Anderson and Meriam Amamou

– The research aims to ask whether, in the absence of overarching innovative conditions, a small firm can have an innovative culture and what its scale and scope is.

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Abstract

Purpose

The research aims to ask whether, in the absence of overarching innovative conditions, a small firm can have an innovative culture and what its scale and scope is.

Design/methodology/approach

The study employs four exploratory case studies. This methodological choice is justified in that a case study approach allows the use of the existing literature without inhibiting the detection of any unique characteristics in the Tunisian context. This context of a developing economy is likely to be different from established economies.

Findings

The study finds evidence of a learning environment within the firms and a good fit with the concepts of an innovative culture. Internal knowledge sharing is evident for all companies. However, this culture faces inwards, so that the paucity of linkages and weak socialisation combines with institutional thinness to isolate the firms. Local competitive advantages are not amplified but rather are dampened by the relative absence of interaction.

Research limitations/implications

Most research about innovation in the ICT sector is conducted in the context of developed countries. This paper shows the specificities and uniqueness of innovation culture in the context of a developing country.

Practical implications

The findings imply that despite recent improvements, Tunisia lacks many of the regional “institutions” that produce the synergic benefits of an innovative milieu.

Originality/value

The context of a developing country is novel. The value of the findings may, however, be extended to other similar countries. This is important given the role of ICT in “catching up”.

Details

Journal of Small Business and Enterprise Development, vol. 21 no. 1
Type: Research Article
ISSN: 1462-6004

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