This paper presents an integrated system for assembly planning and redesign, based on \Design for Assembly (DFA)" principles. DFA criteria are used in the generation of cost eeective assembly sequences for mechanical products, using a technique known as \Backward Assembly Planning". If the assembly cost can be further reduced by redesign, the system performs \Reverse Engineering", produces a de...

background: ergonomics is a science that provides methods of creating reasonable adaption between occupation and worker by improving usability through consideration of job demands and human ability to satisfy them. a deep understanding of user’s thoughts on and attitudes toward utilizing a tool could improve its design. in the present study, two cushions designed particularly for one of car ind...

Tolerance analysis of mechanical assemblies is an important tool in reliable design of products at low cost and good quality. Using this tool, it is possible in manufacturing stage to observe the effect of parameters on assembly requirements. The direct linearization method is a useful method which runs based on vector loop analysis. In this research, the DLM method is used to analyze the toler...

Background: One major challenge in brachytherapy is to verify the accuracy of dose distributions calculated by the treatment planning system. In this project, a new phantom design has been introduced for quality assurance of dose distributions in gynocological (GYN) brachytherapy implants using EBT GafChromic film. Materials and Methods: This phantom has been designed and fabricated from 90 sla...

This paper concerns the design and analysis, of a ball type continuously variable transmission, (B-CVT). This B-CVT has a simple kinematic structure, and same as a toroidal CVT, transmits power by friction on the contact points between input and output discs, that are connected to each other by balls. After, a brief introduction of our B-CVT structure, the performa...

We discuss theoretical aspects of the self-assembly of triangular tiles, in particular, right triangular tiles and equilateral triangular tiles, and the self-assembly of hexagonal tiles. We show that triangular tile assembly systems and square tile assembly systems cannot be simulated by each other in a non-trivial way. More precisely, there exists a deterministic square (hexagonal) tile assemb...

Assembly planning and evaluation is an important component of the product that require frequent and intuitive manual interaction such as assembly methods (91) to create a desktop based virtual assembly system called HIDRA (Haptic. (3) implemented a computer-based system for virtual assemLooking at haptic interaction within virtual assembly training discrimination, part positioning, and manual a...

The development of an aircraft industrial system is a complex process which faces the challenge digital discontinuity in multidisciplinary engineering due to various interfaces between different tools, leading extra time and costs. This paper proposes ontology-based system, aiming at functionality integration design automation, by Models for Manufacturing methodology principles. A tool-agnostic...

This paper mathematically analyses the varying magnitude of production loss, which may occur due to idle time (inprocess waiting time and traveling time) on a linear walking worker assembly line. Within this flexible and reconfigurable assembly system, each worker travels down the line carrying out each assembly task at each station; and each worker accomplishes the assembly of a unit from star...