Open AccessAn experimental study of PMMA precision cryogenic micro-milling
Author(s) -
Ying Yan,
Yujia Sun,
Bo Li,
Ping Zhou
Publication year - 2021
Publication title -
biomaterials and polymers horizon
Language(s) - English
Resource type - Journals
ISSN - 2789-9705
DOI - 10.37819/bph.001.01.0123
Subject(s) - materials science , machinability , machining , brittleness , surface roughness , composite material , polymethyl methacrylate , cryogenic temperature , surface finish , polymer , microfluidics , optical microscope , nanotechnology , metallurgy , scanning electron microscope
Polymethyl methacrylate (PMMA) has been used more and more widely in the fields of microfluidic devices and high-precision optical components due to its excellent mechanical and optical properties. Micro-milling is one of the methods that has been used in the machining of polymer materials. The machinability of PMMA is highly dependent on temperature, and the cryogenic method is also applied to control the processing temperature. In this work, the PMMA was milled with different processing parameters at the temperature of -55℃ and 25℃. The influence of each milling parameter on the surface quality under different temperature conditions were investigated. According to the results, the cutting depth is the dominant factor that influenced the surface roughness. The shape accuracy of the rectangular microgroove processed under low-temperature conditions is better. The material removal mechanism under different temperatures was also discussed, and the material is cut in a brittle way under low temperatures.