Innovative of mechanical top clamp fixture calibration through load cell methodology

3D imaging module was integrated by 3 Printed Circuit Board Assembly (PCBA) which consists of Main Board (MB), Projector Mini Board (PMB) and 2 Camera Module (2CAM). A piece of thin liner will then attach underneath of the module to strengthen the structure and as heat transfer mechanism. In order to achieve product specification on module thickness and flatness, a mechanical top clamp fixture with plungers was designed to flatten the module during liner assembly prior to curing process. Regular calibration on mechanical top clamp plungers are required in order to maintain a consistency of each plunger force in flattening the module. However, conventional calibration with feeler gauge method is time consuming which required to measure and adjusting the plungers lever to it optimized level. This paper share the new developed calibration method with load cell vs conventional calibration approach, working principle, advantages and result. This innovation have improved 2x top clamp fixture calibrated per day.