Inexpensive Piezoelectric Elements for Nozzle Contact Detection and Build Platform Leveling in FFF 3D Printers
نویسندگان
چکیده
Inexpensive piezoelectric diaphragms can be used as sensors to facilitate both nozzle 1 height setting and build platform leveling in FFF (Fused Filament Fabrication) 3D printers. Tests 2 simulating nozzle contact are conducted to establish the available output and an output of greater 3 than 8 Volts found at 20oC, a value which is readily detectable by simple electronic circuits. Tests 4 are also conducted at a temperature of 80oC and, despite a reduction of greater than 80% in 5 output voltage, this is still detectable. The reliability of piezoelectric diaphragms is investigated 6 by mechanically stressing samples over 100,000 cycles at both 20oC and 80oC and little loss of 7 output over the test duration is found. The development of a nozzle contact sensor using a single 8 piezoelectric diaphragm is described. 9
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Inexpensive Piezoelectric Elements for Nozzle Contact Detection and Bed Levelling in FFF 3D Printers
Inexpensive piezoelectric diaphragms can be used as sensors to facilitate both nozzle 1 height setting and bed levelling in FFF (Fused Filament Fabrication) 3D printers. A variety of probes 2 have been developed by the authors and others to utilize piezoelectric diaphragms both under the 3 build stage and in the printer head. The reliability, repeatability and sensitivity of these probes has 4 ...
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