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JIET GROUP OF INSTITUTIONS

DEPARTMENT OF MECHANICAL ENGINEERING

IV B.TECH VIII SEM.

(8ME) INDUSTRIAL ENGINEERING LAB

EXPERIMENT 3

Object: -

Determine of time standard for a given job using stop watch study.

Materials Used: -

M.S. rod 20 mm in diameter

Tools & Equipment used:-

Capstan lather m/c, turning tool, stop watch, Drilling tool, bar feed stopper, parting off

tool etc.

Introduction:-

Time study is a work measurement technique for recording the times & rate of working

for the elements of a specified job carried but under specified conditions & for analyzing the data

so as to obtain the time necessary for carrying out the job at a defined level of performance.

The stop watches: -

The two types of stop watches commonly used for time study are: -

1) Fly back decimal minute stop watch.

2) Non-fly back stop watch

Fly back decimal minute stop watch is most commonly used for time study. In this type

of watch the movement is started & stopped by moving the slide forward & back work

respectively.

Non fly back stop watch is controlled by pressure on the top of winding knob. The first

pressure starts the watch, the second pressure stops it, and the third pressure returns the hands to

zero. This watch is suitable only for cumulative timings.

Steps in Making a time study:-

1) Collect all the information about the job, operator & the surrounding conditions.

2) Collect all the information about the method. This is done to record complete description

of operation.

3) Examine the detailed break down to ensure that the most effective methods and motions

are being used.

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4) Measure & record the time taken by the operator to perform each element of the operator.

5) Determine the no. of cycles to be timed & the representative time can be found out by

taking the average of all readings.

6) Rate the operators performance.

7) Extending the operators performance.

8) Determine the allowance to be provided over & above the basic time for operation.

9) Determine the standard time for the operation.

Observation Table:-

S. No Elements Reading in work cycles Average time per element

Foreign Elements Total time per cycle

Rating factor

Leveling

Allowances

Normal time

Total Allowance

%

Tooling Standard time

Time byDate

Calculations:-

Allowances:-

Relaxation allowances

Contingency allowances

Special allowances

Interference allowances

Policy allowances

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Note: - Above allowances are to be explained in brief and to be stated where they are being used.

Result: -

Discussion: -