Chapter 2 Work Study 工业工程专业英语 教学课件

Bulk storage of raw material, finished product in warehouse
Operation Analysis
Man-machine Operation Analysis
Construction of the Man-machine Chart
Two-hand Process Analysis
study Requirements of time study Tools of time study Process of Time Study
What is time study
Time study is one of the work measurement techniques
Time study is a structured process of directly observing and measuring human work in order to establish the time required for completion of the work by a qualified worker when working at a defined level of performance
Torso, upper arm, forearm, hand and fingers
4.Principles of Motion Economy
I Principles related to the use of human body
II Principles related to the arrangement of work place
Ⅲ Principles related to tools and equipment
Unit 2 Time study
What is time study? The methods of determining time
standards The significance and purposes of time
Indicates an inspection for quality and / or a check Examine material for
for quantity.
quality or quantity
Temporary storage or delay
Storage
Indicates a delay in the sequence of events: for example, work waiting between consecutive operations, or any object laid aside temporarily without record until required.
as the evidence of standard budget. To determine the utilization efficiency of
machines and to solve the problems on balance of production lines.
Requirements of time study
Process Operation Motion Time Work
Pmts Standard
Analysis Analysis Analysis Study Sampling
Data
Process Analysis
Process analysis is one of the main contents of methods study, by which researchers can completely observe and record the whole production processes and carry out integrated analysis from a macroscopic viewpoint.
The methods of determining time standards
Estimates historical records work measurement procedures
The significance of time study
Accurately established time standards help increase the efficiency of the equipment and the operating personnel
The standard time
Definition: the time required for a fully qualified,
trained operator, working at a standard pace and exerting average effort The standard time is calculated by the following equations:
When recording the watch readings, note only the necessary digits and omit the decimal point, thus giving as much time as possible to observing the performance of the operator
Motion Analysis
Class 1 2 3 4
5
Pivot Knuckle
Wrist Elbow Shoulder
Trunk
Body member moved
Fingers
Hand and fingers
Forearm, hand and fingers
Upper arm, forearm, hand and fingers
Researchers of time study should tell all related people that the job is to be studied
……
Tools of time study
Stopwatch
A Decimal Minute Watch
An Electronic Stopwatch
The operator should be thoroughly acquainted with the new technique before the operation is studied
the method must be standardized at all points where it is to be used, before the study begins
7
8 Repeat four more times
1 3 1 55
14 4
Activity symbols Operation
Transport Inspection
Explain
Example
Indicates the main steps in a process, method or procedure. Usually the part, material or product concerned is modified or changed during the operation.
Indicates the movement of workers, materials or equipment from place to place.
Drive nail, drill hole and type letter, etc
Move material by truck, elevator or carrying
NT = OT × R/100 ST = NT + NT ×Allowance
= NT ×(1+Allowance)
Unit 3 Time Measurement Methods
Direct Time Study a method of using time measurement
to determine the standard time.
Sound standards will mean the difference between the success or failure of a business
Purposes of time study
To determine the time standards and control labor costs.
Two techniques used for recording the elemental times
1.The continuous timing method
Presents a complete record of the entire observation period
Be better adapted to measuring and recording very short elements
Material in truck or on floor at bench waiting to be processed, Employee waiting for elevator
Indicates a controlled storage in which material is received into of issued from a store under some form of authorization, of an item is retained for reference purposes.
To set up the standard times and take them as the base of payroll.
To decide the work schedule and work plan. To determine the standard cost and take it
A Computer-assisted Electronic Stopwatch
Tools of time study
Videotape Cameras Time Study Board Time Study Forms
Process of Time Study
Selecting the operator Analyzing the job Breaking it down into elements Recording the elapsed elemental values Performance rating the operator Assigning appropriate allowances
Steps of Methods Study The Classifications of Methods
Study Principles of Motion Economy
Introduction to Work Study
Work study
Method study
Work measurement
Chapter 2 Work Study
Unit 1 Method Study Unit 2 Time study Unit 3 Time Measurement Methods Unit 4 Work Sampling
Unit 1 Methods Study
The Definition and Content of Methods Study
Subsidiary Componen t
Main component
5
3
Change in size or condition shown like this
Repeats shown like
百度文库
this
(note
subsequent
numbering)
Alternative
routes
6 Now assembly