Page 165 - Turner 1st sem Practicals

Job sequence

TASK 1: Single way tool post

• Clean the tool post seating face. • Only one tool can be fixed in the tool post.
• The tool is positioned on the boat piece and is clamped • The tool is clamped with only one screw.
by the screw.
• Check the centre height with a height setting gauge.
• The centre height of the tool tip can be adjusted with the • Centre height is adjusted by boat piece.
help of the rocker arm and the ring base.

TASK 2 : Quick change tool post

• Clean the tool post and tool holder. • Centre height is adjusted by tool holder with help of fine
adjust screw.
• Tool is fixed on the tool holder and locate the tool post.
• Tool post has the best rigidity for holding the tool.
• Check the centre height with a height setting gauge.
• Check the centre height with a height setting gauge.

TASK 3 : Four way tool post

• Clean the tool post seating face and place the shims on • Check the centre height with a height setting gauge.
the seating face.
• Remove or add shims and check the height when the
• Use a minimum number of shims for height adjustment. tool is tightened by the centre screw.
• Shims must flushed with the edge of the seating face. • Tighten the other two tool-holding screws alternately
applying the same amount of pressure.
• Place the tool in the tool post on the shims with the near
butting against the wall of the seating face. • When both the screws have a full gripping pressure
tighten the centre carefully.
• Tighten the tool with the centre screw of the tool post.
• Check once again with a tool height setting gauge.

152 Producltion & Manufacturing : Turner - Exercise 1.3.47