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Annular Guide Diaphragm for a Strain-Gauge Load Cell
Two thin annular diaphragms, one high and one low, hold Ruge's piston centred in its shell. They let it move freely up and down but resist side loads.
Intermediate
A few hours
Instructions
1
1
Mark the ring
Mark the ring
On thin sheet, scribe two circles with dividers: the outside fits the shell, the inside fits the piston.
Materials for this step:
Mild Steel Sheet1 pieceTools needed:
Dividers
Center Punch2
2
Cut and flatten
Cut and flatten
Drill a starting hole and cut out the centre, then cut the outside with snips. File both edges smooth and flatten it on the anvil.
Tools needed:
Drill Press
Tin Snips
File Set
Anvil3
3
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). Make two, one for the top and one for the bottom of the piston.
Materials
1- 1 piecePlaceholder
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