The document defines productivity as the ratio of output to inputs in production. It discusses total productivity as the ratio of total output to total inputs, and partial productivity as the ratio of output to a single input. Productivity measurement aims to study performance over time, allow for comparisons between systems, and compare actual to planned productivity. Higher productivity means more output with the same or fewer inputs, or the same output with fewer inputs. The example given shows calculating machining times for a part using HSS, carbide, and ceramic tools, demonstrating faster machining and higher productivity when using more advanced carbide tools.

1. PRODUCTIVITY :
• It is the ratio of output produced to the input resources utilised in the
production
• TOTAL PRODUCTIVITY :
It is the ratio of the aggregate output to aggregate input
• PARTIAL PRODUCTIVITY:
It is the ratio of the aggregate output to any single input
• BASIC OBJECTIVES :
•Basic objectives behind productivity measurement are
a) To study performance of a system over time
b) To attain a relative comparison of different systems for a given level
c) To compare the actual productivity of a system with its planned productivity
BENEFITS OF HIGHER PRODUCTIVITY
• More output is produced with the same or lesser input
• The same output is produced with lesser input
• More output is produced with more input , the proportional increase in
output being more than the increase to input

2. PRODUCTIVITY ENHANCEMENT TECHNIQUE

3. PRODUCTIVITY ENHANCEMENT TECHNIQUE

4. PRODUCTIVITY ENHANCEMENT TECH NIQUE

5. PRODUCTIVITY ENHANCEMENT TECHNIQUE

6. PRODUCTIVITY ENHANCEMENT TECHNIQUE

7. PRODUCTIVITY ENHANCEMENT TECHNIQUE

8. PRODUCTIVITY ENHANCEMENT TECHNIQUE

9. PRODUCTIVITY ENHANCEMENT TECHNIQUE
PROBLEM : The component as shown in the figure is to be
machined from a stock of CRS C 40 Steel , 40 mm diameter
& 75 mm long, Calculate the machining time required for
completing as per dimension mentioned in the drawing ,
the part will be machining by
a) HSS TOOL
b) CARBAIDE TOOL
c) CERAMIC TOOL
Also show how the PRODUCTIVITY will enhance by
using the modern tools

10. PRODUCTIVITY ENHANCEMENT TECHNIQUE
 The machining is to be carried out in two stages as Pocket marked in the figure
of machining plan in the previous slide
POCKET 1
 By HSS TOOL :
Assume cutting speed = 30 m/min , Depth of cut = 2mm, Feed rate = 0.30mm/rev
So, Depth of Cut = (40 – 32)/2 = 4 mm
So, No. Of passes required = 4/2 = 2 nos.
We know, Cutting Speed = V = (II×D×N)/1000
N= ( V× 1000)/(II× D)
= (30×1000)/ (II× 36)
[ as average diameter = (40+32)/2 = 36 mm ]
= 265.25 rpm
So, Time for machining in one pass = (L+A+O)/ (f×N)
= (75 + 2 + 2)/ ( 0.30×265)
= 0.969 min
As , no. Of passes are 2 so Total time for POCKET 1 = 2×0.969 = 1.937 min

11. PRODUCTIVITY ENHANCEMENT TECHNIQUE
POCKET 1 :
By CARBAIDE TOOL :
Assume cutting speed , V = 145 m/min, Depth of cut = 2 mm,
f = 0.38 mm/rev, No of passes = 2
We know , V = (II× D× N)/ 1000 m/min
So, N= ( V× 1000 )/ (II× D)
= (145× 1000)/(II × 36)
= 1282.7 rpm = 1280 rpm( assume)
Time for machining one pass = (L+A+O)/(f×N)
= (75 + 2 +2 )/( 0.38 × 1280)
= 0.158 min
So Total time for 2 passes = 2× 0.158 = 0.317 min

12. PRODUCTIVITY ENHANCEMENT TECHNIQUE
For POCKET 2 :
HSS Tool:
Assume Cutting speed = V = 30 m/min, f = 0.30 mm/rev,
Total depth of cut = (32 – 22)/2 = 5 mm
So, No of passes = 3 i.e 2passes + 2 passes + 1 pass
We know, V = ( II×D×N)/1000
N= ( 30 × 1000)/ (II × 27) [ as average diameter =
(32+ 22)/2 = 27 mm
N= 353.857 = 355 rpm
So, Time for machining for one pass = (L+A+O)/(f×N)
= (40+2+2)/(0.30×355)
= 0.413 min
Time for machining for 3 passes = 3 × 0.413 min = 1.239 min

13. PRODUCTIVITY ENHANCEMENT TECHNIQUE
For POCKET 2:
By CARBAIDE TOOL:
Assume , V= 145 m/min, Doc = 2 mm, f= 0.38 mm/rev, No of passes = 3
We know, V = (II× D×N)/1000 m/min
N= (145×1000)/ (II× 27) [ as average diameter = ( 40+ 32)/2 = 27
mm]
= 1710.34 rpm
Time for machining one pass = ( L+A+O)/(f×N) min
= (40 +2+2)/(0.38×1710)
= 0.067 min
Foe 3 nos passes Total time = 3×0.067 min = 0.203 min
HENCE
Total time by HSS TOOL for POCKET1 & 2 = 1.937+ 1.239 = 3.176 min
Total time by CARBAIDE TOOL for POCKET 1 & 2 = 0.317 + 0.203 = 0,552
min

16. PRODUCTIVITY ENHANCEMENT TECHNIQUE

17. PRODUCTIVITY ENHANCEMENT TECHNIQUE

18. PRODUCTIVITY ENHANCEMENT TECHNIQUE

19. PRODUCIVITY ENHANCEMENT TECHNIQUE

20. PRODUCTIVITY ENHANCEMENT TECHNIQUE

21. PRODUCTIVITY ENHANCEMENT TECHNIQUE
THANK YOU