US 11,872,753 B2
Frequency control of spreader vibrations
David A. Champion, Corvallis, OR (US); Adriaan Spierings, St. Gallen (CH); and Thomas Bauer, St. Gallen (CH)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/049,498
Filed by HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., Spring, TX (US)
PCT Filed Oct. 12, 2018, PCT No. PCT/US2018/055574
§ 371(c)(1), (2) Date Oct. 21, 2020,
PCT Pub. No. WO2020/076337, PCT Pub. Date Apr. 16, 2020.
Prior Publication US 2021/0237360 A1, Aug. 5, 2021
Int. Cl. B29C 67/00 (2017.01); B29C 64/214 (2017.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B29C 64/393 (2017.01); B22F 10/85 (2021.01); B22F 12/67 (2021.01); B28B 1/00 (2006.01); B28B 17/00 (2006.01); B22F 12/60 (2021.01); B22F 12/63 (2021.01); B22F 12/90 (2021.01); B22F 10/37 (2021.01); B22F 10/14 (2021.01); B22F 10/28 (2021.01)
CPC B29C 64/214 (2017.08) [B22F 10/37 (2021.01); B22F 10/85 (2021.01); B22F 12/60 (2021.01); B22F 12/63 (2021.01); B22F 12/67 (2021.01); B22F 12/90 (2021.01); B28B 1/001 (2013.01); B28B 17/0081 (2013.01); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 10/14 (2021.01); B22F 10/28 (2021.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for use with an additive manufacturing machine, comprising:
a controller to:
receive measurement data from a sensor responsive to an operation of a vibrated spreader for use in dispensing a build material onto a target surface;
identify, based on the measurement data from the sensor, a resonant frequency associated with the spreader at which the spreader is not to be vibrated;
identify, based on the measurement data from the sensor, a further frequency at which an amplitude of a vibration of the spreader is below a threshold; and
control, based on identifying the resonant frequency associated with the spreader and based on identifying the further frequency at which the amplitude of the vibration of the spreader is below the threshold, a frequency of the vibration of the spreader.