ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Load-Sensitive Column for a Strain-Gauge Load Cell
The column inside Ruge's load cell (1949) carries the whole load and the bonded strain gauges. Its lower end screws into the base; its upper end is rounded to bear in the piston's bore.
Intermediate
A few hours
Instructions
1
1
Watch: facing and turning on a lathe
Watch: facing and turning on a lathe
Facing and parting on a manual lathe.
2
2
Cut, center and face
Cut, center and face
Saw a length of round bar. Center both ends, fit a lathe dog and face both ends square.
Materials for this step:
Mild Steel Round Bar1 pieceTools needed:
Hacksaw
Metal Lathe
Lathe Dog
Drill Press3
3
Turn it
Turn it
Rough-turn to within 0.03–0.04 in of size, then take the finishing cut slowly, with cutting oil. Ruge allows round, square, solid or hollow; a square section (filed or shaped flat) takes the gauges more easily.
Tools needed:
Metal Lathe
Cutting Oil
File Set
Micrometer4
4
Thread the foot, round the head
Thread the foot, round the head
Cut a thread on the lower end so it screws rigidly into the base. Round the upper end to a half-sphere with a form tool and file.
Tools needed:
Metal Lathe
Tap and Die SetFile Set5
5
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
This blueprint makes
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.