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Floating Load Piston for a Strain-Gauge Load Cell
Ruge's floating piston takes the load and passes it straight down onto the column. It is bored so the column reaches up inside it, and two diaphragms hold it centred in the shell.
Intermediate
A few hours
Instructions
1
1
Watch: boring a hole on a lathe
Watch: boring a hole on a lathe
Boring a hole step by step on a metal lathe.
2
2
Turn the outside
Turn the outside
Saw a length of round bar, center and face it, and turn the outside to size, leaving clearance inside the shell.
Materials for this step:
Mild Steel Round Bar1 pieceTools needed:
Hacksaw
Metal Lathe
Lathe Dog
Cutting Oil
Vernier Caliper3
3
Bore it
Bore it
Chuck it, drill a starting hole from the lower end and bore it out with a boring bar, stopping short of the top: the column's rounded end bears on the end of the bore.
Tools needed:
Metal Lathe
Boring BarCutting OilVernier Caliper4
4
Limits
Limits
Ruge's patent gives the part's shape and job but no material or size. Mild steel and silver-solder brazing are our choice; size it to the load you need. Lathe method after Palmateer, Elementary Machine Shop Practice (1918).
Materials
1- 1 piecePlaceholder
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