What Is Milling Cutters?
Milling cutters are cutting tools typically used in milling machines or machining centres to perform milling operations (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter's shape (e.g., a form tool such as a hobbing cutter).
What Is the Purpose of a Sine Bar?
A Sine bar is used to measure the angle of the given specimen accurately. It usually measures the angle of the specimen as well as locates the workpiece (specimen) properly to measure the angle of it.
Short Column and Long Column
What is a Column, Short Column, Long Column
Column:
A column is a vertical compression member. A column is subjected to axial compressive loads.
When the ratio of effective length to the least lateral dimensions of the column is less than 12, then it is called a short column.
(or)
When the ratio of effective length to the least radius of gyration is less than 45, then it is called a short column.
Long Column:
When the ratio of effective length to the least radius of gyration is greater than 45, then it is called a long column.
A long column is subjected to bending moment in addition to direct compressive stress.
The load carrying capacity of a long column is less than a short column.
The load carrying capacity of a long column depends upon slenderness ratio (slenderness ratio increases then the capacity of the column decreases).
