Touch probe

• Touch Probe to be used with CNC machines

• Electrically is just a switch
• Mechanically, the switch is activated with minimal displacement from 3 axis.
• Implementation can be piezo, mechanical (bearing balls), optical
• It is used to sense the touching of the CNC to the material surface and get as data

• objects shape or end-points,
• machine ends
• Tools length

• It can be attached to CNC moving head at the tool chuck or next to it, or at the machine table
• CNC Touch probes are high priced precise instrumentation
• A low cost alternative is to make a relative precise home-made touch probe

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Make probes

• The "One Penny" Touch Probe

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• Height probing for PCB isolation routing with Eagle/pcb-gcode
• Touch Probe 22-Aug-2008 Bertho Boman

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