Análise ergonômica do trabalho em uma indústria de montagem: estudo de caso

Abstract

The search for maximum efficiency and the time that companies have to place their new products on the market are getting smaller and smaller, factors that require a detailed study for the implementation of the project and ergonomics are often disregarded. The objective of this work is to carry out an ergonomic analysis in the component assembly process in a company in the two-wheel segment of the Manaus Industrial Pole (PIM). The method adopted for the execution of the research was the Case Study, as it is a more in-depth survey of ergonomics in the workstation of the component press. During the research, the current situation of how the operator performs the component pressing and valve fitting process was analyzed, identifying that the rim grip is not safe due to the inadequacy of the tool used by the operator whose fitting force is 1, 3 Kg.F (ideal <0.6 Kg. F), with consequences of WMSD and Tenosynovitis. It was noted that there is insufficient support to perform the activities and there is excessive effort on the wrist, flexor muscle and adductor pollicis. The ergonomic analysis showed through the BRIEF and OCRA Checklist methods that the process is a high risk to the employee, in areas prone to WRMD in the regions of the wrist, hands and elbows. The solution adopted for this problem was automation, causing the valve fitting process to be carried out by a pneumatic cylinder during the pressing of the bearing. With this implementation, much of the employee's effort in carrying out the activity was reduced, especially in the wrist and hand region. With the improvement of the process, it was possible to relieve the musculoskeletal tension of the employee. With the automatic process, there was a reduction in the operator's fatigue factor, thus converging in a favorable result in OCRA, which presented a low index in the new evaluation.