Abstract
Abstract Original measuring equipment is presented, together with the systems aimed at investigating process parameters of the operation structure and establishing optimal working methods to evaluate properly real working conditions of the man-machine system in garment engineering and technologies. The measuring equipment consists of the system for measuring and storing data on process parameters and bi-plane system of video recording. The system for measuring and data storage is equipped with four sensors, which measure rotation speed of the main shaft, arm movements in the taking and laying-off zones, as well as the movements of pedal regulator, used to manage and control the overall sewing dynamics, all in a simultaneous and contactless manner. Bi-plane system of video recordings is used to record simultaneously the working movement systems (working methods) at the workplace analysed. The operation of seam sewing on the front part of a ladies’ costume is analysed on a designed workplace, using the above described measuring equipment and system of measuring. The whole cycle of recording the technological operation included 10 consecutive executions, while the operation is performed by an operator of an average level of skill (KPZ = 1,00, coefficient of proficiency). On the basis of process parameter measurements, employing computer processing of the signals from the sensors, graphs are obtained for the technological operation structure, with the duration of individual suboperations indicated, and also showing the changes occurring in the course of sewing caused by pedal regulator movements (which manage and control the overall dynamics of sewing and the function of the processing microcomputer of the sewing machine. Bi-plane video recording system is used to investigate the working method employed, basic movements and optimal logical sets of movements, as well as the cyclograms of the movements, used to define spatial and temporal values. The results obtained are compared with the system of synthetic normal time (MTM) and indicate negligible discrepancies.
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