Week 7

Computer Controlled Machining

Group Assignment

• Do your lab's safety training
• Test runout, alignment, fixturing, speeds, feeds, materials, and toolpaths for your machine

Safety Training

Before using the CNC machine all users undergo safety training.

The most important part of the safety training is understanding that there can be a fire hazard, a risk of damage to the machine and a risk of injury to people so keeping an eye on the machine at all times is crucial.

• Always keep hands, bodyparts and clothing away from all moving parts
• Always use eye protection while the machine is running
• Use ear protection while the machine is running
• Use gloves while handling stock
• Do not leave the machine while it is running, always keep an eye on the machine
• Make sure the vacuum is turned on
• Do not use the machine if you are tired
• Do not use the machine if you are alone in the lab

During the training the users also learn how to use the machine:

• How to turn on and off the machine
• How to set up the machine
• How to use the software

Test runout, alignment, fixturing, speeds, feeds, materials, and toolpaths for your machine

words about test runout, alignment, fixturing, speeds, feeds, materials, and toolpaths

The students made test joints as an excersize to test the shopbot and working the machine. These test pieces made sure the runout and alignment are OK.

Working with plywood on the shopbot the material is fixtured to the bed with screws.

Toolpaths are generated using VCarve

Feeds and speeds are calculated using the Fablab Speed and Feeds Calculator