Skip to content

7. Computer controlled machining

General Info

Time

Daylight Saving Time from Mar 14

  • Class
    • Mar 15: recitation (22:00-23:00)
    • Mar 17: embedded programming(22:00-1:00)
  • Global Open time
    • Mar 20: 23:00
  • Asian review, Local session
    • no change

Nueval

Nueval is ready for local evaluation

  • https://nueval.fabacademy.org/#/login
    • ID and PW: falbals.io

Local session next week

embedded programming

  • Mar 19(Fri)
    • Tamiya -> X
    • Ishimura -> Sat?
    • Homma -> Sat?
  • Mar 20(Sat)
    • Kamei
    • Takezawa
    • Tamiya

Group assignment

  • Computer controlled machining (Ishimura)
  • embedded programming (Takezawa)

Assignment

Group assignment:

Note

do your lab’s safety training
test runout, alignment, speeds, feeds, materials, and toolpaths for your machine

Individual assignment:

Note

make (design+mill+assemble) something big (~meter-scale)

TODO: Group assignment

do your lab’s safety training

Listen carefully and follow Fablab Hamamatsu rule

  • wear
  • glasses and gloves (from Kannai or yours)
  • shoes -> close toe, short string
  • clothes -> tight, no strings
  • hair -> tight

test runout, alignment, speeds, feeds, materials, and toolpaths for your machine

ref. last year local session

  • Kerf
    • Tool diameter + runout（軸のぶれ）-> measure Kerf -> offset
  • alignment
    • parallel
    • cut rectangular -> measure 2 points on parallel sides
  • speed, feed rate
    • noise ?
  • material
    • size: 910x1820mm
    • measure stock thickness 12mm -> not 12.00mm
  • toolpaths
    • cut comb -> fit/loose -> slide_clearance
    • cut joints and pockets with offset and clearance -> joint_clearance

TODO: Individual assignment

make (design+mill+assemble) something big (~meter-scale)

  • design
    • Parametric
      • stock_thickness
      • tool_diameter
      • offset
      • clearance
      • dog bone
    • Fusion360 -> Shaper Utility -> svg -> Cut2D(CAM in Hamamatsu)
  • mill
    • Large format CNC
  • assemble
    • sanding
    • paint
    • glue, screw, insert_nut and bult, nail
    • metal parts, hinge, caster

ref. Shopbot Feeds and Speeds Charts

Assessment

Computer-Controlled Machining

How big is big?
Answer: Life size, big enough to show you understand many of the possibilities of CNC machining - drill, pocket, dogbones, nesting, etc.

Last update: June 26, 2021