Assignment ergonomic hammer

4,000 views

Published on

Ergonomics

Published in: Health & Medicine, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
4,000
On SlideShare
0
From Embeds
0
Number of Embeds
6
Actions
Shares
0
Downloads
63
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Assignment ergonomic hammer

  1. 1. By…… Pankaj Tadaskar (70) Sapanjit Mohanty (88) Sunit Mhasade (105) Sumeet Suman (106) Sanjay Jena (120)
  2. 2. HISTORY  Use of simple tools dates to about 2,400,000 BCE Stones attached to sticks with strips of leather or animal sinew were being used as hammers by about 30,000 BCE during the middle of the Paleolithic Stone Age (era distinguished by the development of the first stone tools)
  3. 3. OLD HAMMER DESIGN  A hammer is a tool meant to deliver an impact to an object  The most common uses are for driving nails, fitting parts, forging metal and breaking up objects  Hammers are often designed for a specific purpose, and vary widely in their shape and structure
  4. 4.  The usual features are a handle and a head, with most of the weight in the head  The basic design is hand- operated, but there are also many mechanically operated models for heavier uses, such as steam hammers
  5. 5. BAD DESIGN  Incorrect material may cause breakage of hammer and may injure operator
  6. 6. BAD DESIGN  Improper use of Hammer can damage muscles and tendons of hand.  Repetitive hammering can cause constriction of blood vessels resulting in reduced blood flow in hand (numbness & tingle)  Optimum ration of force o/p to i/p  Large ratio injures worker  Smaller ratio causes repeated involvement of hand and chances of CTD (cumulative trauma disorder)  Vibration In hands
  7. 7.  Lesser contact area between hand and handle may cause compressive stress  As the impact between steel hammer heads and the objects being hit can, and does, create sparks, which in some industries such as underground coal mining with methane gas, or in other hazardous environments containing flammable gases and vapours, can be dangerous and risk igniting the gases.  In these environments, a variety of non-sparking metal tools are used, being principally, aluminium or beryllium copper-headed hammers.. BAD DESIGN
  8. 8. ERGONOMIC CONSIDERATION WHILE DESIGNING HAMMER  The handles have been made of durable plastic or rubber  The hammer varies at the top; some are larger than others giving a larger surface area to hit different sized nails  Material used for hammer is beryllium copper-headed hammers
  9. 9. ERGONOMIC HAMMER
  10. 10.  Hammer is ergonomically designed to suit industrial purpose and carpentry  The hammer produces a cushioned blow and the impact surfaces are round and slightly domed  A specially developed polymaterial makes the hammer highly effective and gives it a long life  Sparkless, antistatic and free from magnetism ERGONOMIC HAMMER
  11. 11.  The Hammer’s weight is approx 25% lower than that of a conventional hammer  The head accounts for approx. 65% of the weight of the hammer  Serve both as screw driver and a hammer as a single tool so consume less space.  This gives the Hammer an excellent impact effect and the weight distribution  The hammer shaft is shaped to give a hefty and precise grip  The Hammer therefore fulfils the most stringent requirements for ergonomics, safety and function. ERGONOMIC HAMMER
  12. 12. ERGONOMIC HAMMER
  13. 13.  Head: The balance-weighted head is outfitted with a large and small mallet constructed of TPR for precise percussions.  Handle: The ergonomic handle is precisely balanced for increased control of force in the percussions to elicit myotatic reflexes  TIP:of the base of the handle effectively elicits cutaneous and plantar reflexes.
  14. 14. A B C D E F LEAD HEAD EASY-GRIP HANDLE SCREW THREAD PROPOSAL OF HAMMER
  15. 15. MODEL A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) WEIGH T (kg) X 70 50 45 65 220 35 0.75 Y 70 50 45 65 220 30 0.80 X: Hammer combination with general screw driver Y:Hammer combination with specific purpose screw driver
  16. 16. REFERENCES  http://www.coroflot.com  http://www.eaglemoldcompany.com  www.sunnex.com  www.wikipedia.com

×