Page 78 - Turner 1st sem Practicals

Job sequence

TASK 1 : Selection of speed

• Observe the speed chart in the machine. • Switch on the machine, the speed is 1600 rpm.
• Change the right side lever in E. • Again and again change different lever at the chart
method and take different speed.
• After change the bottom side lever in B
• Then change the another bottom lever D

Table 1

M/Min E F

A S 38

B S

C S 580

D S

A R 71

B R

C R
D R 1600

• Identify speed change lever position A, B, C, D & E, F,
S, R. Note : According to the machines available in
your institute prepare the speed chart for
• Record in table 1. practice for the trainees.

• Get it verified by your instructor.

TASK 2 : Selection of feed

• Observe feed chart in the machine. • After number change shaft rotate the number 6
• Change the top left side lever G • Switch ON the machine and engage carriage feed lever
and get feed rate 0.07mm/rev.
• Change the bottom left side lever K
• Change the bottom right side lever Z

66 Producltion & Manufacturing : Turner - Exercise 1.3.23