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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.
中级
A few hours
说明
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.
此步骤所需材料：
低碳钢圆棒1 个所需工具：
钢锯
金属车床
车床鸡心夹
台钻3
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.
所需工具：
金属车床
切削油
锉刀套装
千分尺4
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.
所需工具：
金属车床
丝锥板牙套装锉刀套装5
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).
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