linebalancing-120323122041-phpapp01

8/2/2019 linebalancing-120323122041-phpapp01

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LINE BALANCING

P.VIDYUT CHANDRA


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INTRODUCTION

Line balancing means balancing production

line or an assembly line.


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Why Line balancing

So that there is an even flow of production

units from one work station to the next


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Why this Problem Raise

This problem is particularly important in plant

layouts ..

The finished product is the result of many

sequential operations.

The production capacity of each machine

/workstation in sequence is not identical .


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OBJECTIVE OF LINE BALANCING

To distribute the task evenly over workstations

, so that idle time of man and machines is

minimized.


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FABRICATION UNITS

Machines operations are difficult to split in to

small work elements for re grouping.

Some operations are inter-related with each

otherand have fixed sequence

Example tapping after drilling

Machine tools emplyed cannot be used forvariety of jobs ..without expensive changes in

setup and tools ..


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How to handle the LB problem

By sub contracting

By diverting extra parts to another machine

not in line.

Having more than one machine at slow work

station. Or changing the speed of machine .

Motivating and improving performance ofworker or assigning job to efficient worker.

Providing a buffer stock of semi finished parts


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Objective questions

Work element is a part of total job content.

Work station iscombination of few work

elements are performed on part/component.

Station time is the time required to perform

the designated amount of work at a given

station.

Total work content is algebraic sum of all the

work elements on the line.


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Cycle Time is time required to complete onejob

Delay or idle time of ith station = cycle time

(work content of ith station / cycle time) -station time.

Or it is difference between the cycle time and

station time Balance delay is the measure of line

efficiency.

linebalancing-120323122041-phpapp01

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