Teaching machine design & mechanics by jacques maurel
Screw cutting made easy (home made Snap-tap attachment)This attachment is fully described in the september and the october 2013 issues of
"Engineering in miniature" magazine.
Photos of the genuine attachment:
Video of the home made attachment at work:
Close up of the cutting tool:
A near relative of this attachment named: "High speed thread striking attachment" is described in "Model Engineer" Issue 4177. Principle:
The problem is : what happens if the feeding force is greater than the spring one?
Video of the home made attachment at work:
