Explain single point cutting tool nomenclature with sketch.
1 Answer
Answer :
Single Point Cutting Tool Nomenclature:
1. Shank: The main body of the tool is known as shank. It is the backward part of tool which is hold by tool post.
2. Face: The top surface tool on which chips passes after cutting is known as face. It is the horizontal surface adjacent of cutting edges.
3. Flank: Sometime flank is also known as cutting face. It is the vertical surface adjacent to cutting edge. According to cutting edge, there are two flank side flank and end flank.
3. Nose or Cutting Point: The point where both cutting edge meets known as cutting point or nose. It is front of the tool.
4. Base: The bottom surface of tool is known as base. It is just opposite surface of face.
5. Heel: It is a intersecting line of face and base.
6. End Cutting Edge Angle: The angle between end cutting edge or flank to the plane perpendicular to the side of shank is known as end cutting angle.
7. Side Cutting Edge Angle: The angle between the side cutting edge or flank to the plane parallel to the side of the shank known as side cutting edge angle.
8. Back Rake Angle: The angle form to smooth flowing of chips from face, known as rack angle. It allows to smooth flow of chips. Back rack angle is the angle between face and the plane perpendicular to the end cutting edge.
9. Side Rack Angle: The angle between the face and plane perpendicular to the side cutting edge is known as side rack angle. It allows chips to flow smoothly when material cut by side cutting edge.
10. End Relief Angle: It is also known as clearance angle. It is the angle which avoids tool wear. It avoid the rubbing of flank with work piece. End cutting angle made by end flank to the plane perpendicular to base.
11. Side Relief Angle: It is the angle made by the side flank to the plane perpendicular to the base. It avoid rubbing of side flank with work piece.
12. Nose Radius: The intersecting area of both cutting edges is known as nose of the tool.