Thermal Modeling And Uncertainty Quantification of Tool For Automated Garment Assembly

In this work, a thermal Finite Element model is developed to simulate the performance of a blade-like tool for robotic work cells performing automated garment production using a novel thermoplastic stiffening layer. Uncertainty quantification and sensitivity analysis are applied to determine the most important design properties and optimize key performance metrics for swift and reliable garment assembly. Attention is focused on the geometric and thermal design properties that minimize sensitivity to environmental conditions while maximizing expected productivity. An example design is shown for illustrative purposes. This work may inform future design innovation for similar heating tools and reduce the need for physical experiments and long calibration times on the factory floor.

Group Technology for Optimizing Manufacturing Facility Layout

In recent years, the process of cellular manufacturing and group technology have received a lot of attention and popularity in many developed countries. By applying Group Technology (GT), many benefits of flow-line production can be attained in a batch production system. GT improves material handling significantly by reducing material flow time, distance, and setup times. In this paper, an earnest investigative attempt was made to provide valuable information regarding the use of Group Technology by applying to a real world jobshop system. The proposed GT model has the flexibility of choosing the number of cells required, which is very useful in examining different manufacturing cell configurations; or in case the workshop or factory prefers a certain number of work cells. The GT model results were found satisfactory and superior to other techniques in some cases.

Ergonomic Improvement of Material Handling By Redesigning Trolley

Ergonomic improvement in assembly line is the thing which the term generally refers to the scientific method of creating a favorable work and work space which demands to the ability of the workers. Ergonomic configuration is important to guarantee high efficiency, keep away from alignment and damage, and lift fulfillment and confidence among the workforce. More than satisfied and fulfilled workforce, work cells made of ergonomic structure offer noteworthy incentive to producers in terms of lesser output and worker compensation premiums. The system will be reactive or proactive when applying ergonomics. In reactive ergonomics, identifying current problems and take measures to correct them. In proactive ergonomics, seeing areas that can be improved and fix the issues before they become large problems. Each organization ensures the safety and comfortable environment of their workers, in turn they believe in increased quality and in performance ergonomically designed work cells and working equipments are the key area to be concentrated. In this study the problem is analyzed through pareto chart and cause and effect diagram one issue is taken as pallet transfer manual because of this manual pallet transferring workers facing issue like back pain and for this is a solution of ergonomically designed trolley to reduce worker fatigue and the productivity was improved by using major problem solving tools.

Unconventional calibration strategies for micromanipulation work-cells

SUMMARYThis paper presents and compares a set of calibration strategies useful to calibrate vision-based robotised work-cells for micromanipulation and microassembly. To grasp and release microparts precisely, robot calibration, camera calibration and robot-camera registration are needed. Conventional calibration methods are very onerous at the microscale, therefore, two alternative unconventional procedures, called virtual grid calibration and hybrid calibration, are developed for work-cells with high-performance robots, minimising necessary instrumentation. Moreover, an effective calibration of the robot end-effector is designed to compensate for misalignment and orientation errors with respect to the vertical rotational axis. This paper describes the calibration methods and their implementation, the results and the improvements achieved. A detailed comparison between the hybrid and the virtual grid calibrations is provided, demonstrating the higher performance of the latter strategy.