Development of large-scale 3D printer with position compensation system

구동부 변위의 보상이 가능한 지능형 대형 3D 프린터 개발

Abstract

Based on accurate image processing technology, a system for measuring displacement in ${\mu}m$ for drive error (position error, straightness error, flatness error) at a distance using parallel light and image sensor is developed, and a system for applying this technology development to a large 3D rapid prototyping machine and compensating in real time is developed to dramatically reduce the range of measurement error and enable intelligent 3D production of high quality products.

Fig. 1 Large-scale 3D printer

Fig. 2 Manufacturing to Main base bed

Fig. 3 Main frame of Large-scale 3D printer

Fig. 4 Transfer device of ball screw type

Fig. 5 Nozzle for 3D printer of 1.5m grade

Fig. 6 Control part for 3D print of 1.5m grade

Fig. 7 Flowchart for measurement of leveling device

Fig. 8 Test device for straightness

Fig. 9 Image processing device for straightness

Fig. 10 Testing for straightness to using image processing device

Fig. 11 Mechanism for space filter of optical system

Fig. 12 Testing to design module

Fig. 13 Optical system to using of fiber and collimating

Fig. 14 Measurement of Light diffusion angle to using collimating lens

Fig. 16 Selection to CCD from 1st model to 2nd model

Fig. 15 Device of beam splitter

Fig. 17 Flowchart of imaging process

Fig. 18 Method of compare

Fig. 19 Result to testing

Fig. 20 Measure system assemble

Fig. 21 Light part / Sensor park

Table 1. Measurement to Light output device

Table 2. Measurement to Critical displacement

Table 3. Measurement to Light diffusion angle