3.10 Week7 Note
This week is about large format machining.
machines
Roland
ShopBot
Hurco
Harrison
Omax
EDM
MTM
stock
rigid foam insulation(硬质绝缘泡沫) (gesso 石膏, heat gun 热风枪)
veneer plywood（胶合板）
medium density fiberboard (MDF 中纤板)
medium density overlay (MDO 中密度板)
oriented strand board (OSB 定向刨花板)
HDPE（高密度聚乙烯）
Lexan(热塑聚碳酸酯), polycarbonate(聚碳酸酯)
Garolite
aluminum 铝
vendors & job shops
tooling
- drill bits vs end mills
- flutes
- coatings(涂料)
- center-cutting
- up/down cut
- flat/ball end
speeds and feeds
- chip load: ~ 0.001-0.010" = feed rate (inches per minute) / (RPM x number of flutes)
- cut depth: ~ tool diameter
- step-over: ~ tool diameter/2
fixturing
- vises 虎头钳
- clamps 夹子
- screws 螺丝
- vacuum 真空
- weights 砝码
- glue 胶
- tape 胶带
- encapsulation 封装
toolpaths
kerf, offset, runout conventional, climb 2, 2.5, 3, 4, 3+2, 5 rough/finish cuts cut depth, clearance, collisions t-bones tabs lead-in, -out test cuts, cutting air ShopBot VCarvePro FeatureCAM Mastercam HSMWorks Omax Layout fab modules outline rough finish
file formats: .rml, .sbp, .g, .ord