Dynamics Modeling and Optimization of a Wrapper Flow Pack Mechanism

Abstract

Abstract: This paper is about a mechanical solution to vibration problem of a wrapper flow pack mechanism, which is used in packaging industry. The target mechanism is the welding head of the machine where the vibration is generated, due to eccentric masses rotating with a cut-on-the-fly motion law. Consequently, production rate is limited by the vibration at 200 pieces per minute. To reduce the vibration so that the production rate can exceed over 200 ppm, two ways of improvements are considered. The first one is optimizing the motion law. The other one consists in mechanical modifications which eliminates or balance out the inertia forces derived from the eccentric rotating mass. This research implements the second way of adding balance weights and discusses the properties of it. During analysis, the software ADAMS which provides kinematic simulation is used as the analytical tool to test and examine the solutions proposed.

Experimental Results Of A Self-Learning Compensation System For High Precision Manufacturing

“…The former consists in deleting all the error sources during design, manufacturing and assembly stages, whereas the latter is aimed at correcting the errors that a machine commits [4][5][6]. Improvements in the error avoidance approach are strongly limited by the existing technologies and by the cost factor [7,8], and consequently error compensation has become an important research topic in the field of high-precision machine tools. Precision in the mentioned CNC machine tools is mainly affected by geometric and thermal deformation errors, which are responsible for more than 60% of the total machining error [9].…”