Angles of Single point cutting tool


Angles of Single point cutting tool :


1: Side Cutting Edge Angle:
The angle between side cutting edge and the side of the tool shank is called side cutting edge angle. It is often referred to as the lead angle.
2: End Cutting Edge Angle:
The angle between the end cutting edge and a line perpendicular to the shank of the tool shank is called end cutting edge angle.
3: Side Relief Angle:
The angle between the portion of the side flank immediately below the side cutting edge and a line perpendicular to the base of the tool.
4: End Relief Angle:
The angle between the end flank and the line perpendicular to the base of the tool is called end relief angle.
5: Back Rake Angle:
The angle between the face of the tool and line perpendicular to the base of the tool measures on perpendicular plane through the side cutting edge. It is the angle which measures the slope of the face of the tool from the nose, towards the rack. If the slope is downward the nose it is negative back rake.
6: Side Rake Angle:
The angle between the face of the tool and a line parallel to the base of the tool measured on plane perpendicular to the base and the side edge. It is the angle that measure the slope of the tool face from the cutting edge, if the slope is towards the cutting edge it is negative side rake angle and if the slope is away from the cutting edge, it is positive side rake angle. If there is no slope the side rake angle is zero.

Comments

Post a Comment

Popular posts from this blog

“Pattern”- making, allowances and its types

“Pattern”- making, allowances and its types: Pattern: A pattern may be defined as a model of desired casting which when moulded in sand forms an impression called mould. The mould when filled with the molten metal forms casting after solidification of the poured metal. The quality and accuracy of casting depends upon the pattern making. The pattern may be made of wood, metal(cast iron, brass, aluminium and alloy steel.), plaster, plastics and wax. Pattern Allowances: A pattern is always made larger than the required size of the casting considering the various allowances. These are the allowances which are usually provided in a pattern. 1: shrinkage or contraction allowance: The various metals used for casting contract after solidification in the mould. Since the contraction is different for different materials, therefore it will also differ with the form or type of metal. 2: Draft allowance It is a taper which is given to all the vertical walls of the pattern for eas
Read more

Calculate the maximum packing fraction of the unit cell volume that can be filled by hard spheres in the SC, BCC, FCC, Diamond and Hexagonal structures. Which structure most efficiently fills space?

Image
Calculate the maximum packing fraction of the unit cell volume that can be filled by hard spheres in the SC, BCC, FCC, Diamond and Hexagonal structures.  Which structure most efficiently fills space?  SC :  It is easy to determine that there is 1 lattice point per unit cell.  The maximum radius that a hard sphere can have is  , where  a  is the lattice constant.  When the radius is this value, then the spheres on the corners of the unit cell just touch each other.  Hence the packing fraction is: B.C.C :  It is easy to determine that there is 2 lattice points per unit cell.  The maximum radius that a hard sphere can have is  , where  a  is the lattice constant.  When the radius is this value, then the spheres on the corners of the unit cell just touch the body-centered sphere.  Hence the packing fraction is: F.C.C :  It is easy to determine that there is 4 lattice points per unit cell.  The maximum radius that a hard sphere can have is  , where  a  is the lattice
Read more