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To build up integral SL system, a control system of vertical moving stage in the Integral SL system is established. The control system consists of small power stepper motor, movement control cards, driver of stepper motor, precision ball screw, linear guide. The motion accuracy of vertical moving stage in integral SL is an important factor which influences the building accuracy of the SL system. To...
Optical imaging system is a key component for dynamic pattern generator in integral Stereolithography (SL) system, and the performance of the optical imaging system influences building accuracy and resolution of the integral SL system. The larger the aberration of the optical imaging system, the larger the dimension errors of objects built with the integral SL system, and larger aberration will make...
The illuminance on the imaging plane of integral Stereolithography system influences cured depth of resin and fabrication accuracy of part during building process. To control the cured depth of resin and fabrication accuracy, an illuminance measuring system using silicon photocell is developed. The illuminance measuring system consists of MCU, silicon photocell, gain adjustment circuit, I/V switching...
To resolve the problem that thickness of resin layer increases with the object height during building process in piston recoating system, experimental investigations were performed to establish the model describing the relationship of recoating layer thickness with object height and blade speed by using response surfaces methodology. According to the model, a novel recoating process with dynamically...
In order to increase the building resolution of Stereolithography system in Z direction, a novel recoating method, which photosensitive resin is treated with ultrasonic to improve the wetting status between solid resin and liquid resin and to decrease the minimum thickness of the resin layer is investigated. Experiments were carried out to study the influence of ultrasonic treating parameters on the...
The dimension accuracy in scanning plane of high-resolution stereolithography (SL) system with building parameters (laser beam scanning speed (factor A), cured line width compensation (factor B), hatch spacing (factor C) and the coefficient of resin's shrinkage compensation (CRSC, factor D)) were investigated in this study. A L27orthogonal array and signal-to-noise (S/N) were employed to analyze the...
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