Shaper Mechanism Presentation
-
Upload
sarvesh-kulhari -
Category
Documents
-
view
425 -
download
4
Transcript of Shaper Mechanism Presentation
Shaper Mechanism
Introduction Shaping is a material removal process in
which a cutting tool takes mass and shapes a stationary object to produce a sculpted or plane surface and a shaping machine is used to machine surfaces. It can cut curves, angles and many other shapes.
Types of shaper mechanism . A shaping machine may use: 1. Whitworth quick return mechanism 2. Crank and slotted link mechanism
3. Hydraulic shaper mechanism
Links & joints
Fig- link & joint position
Calculation of degree of freedom Links(n)-1,2,3,4,5 Total-5,
1 degree of freedom joints-A,B,C,D,E J1 =5 , 2 degree of freedom joints-p J2=1 , Degree of freedom of system=3*(n-1)-2* J1 -
J2
=3*4-2*5-1 =1
Mechanism how works
Purpose and Role of mechanism
rotary movement of the drive is converted into reciprocating movement contained within the column of the machine.
QUICK RETURN MECHANISM. Why name is quick return
mechanism??????
The parts shown in the above figure are officially labeled as:
1. Driving pinion 2. Crank pin 3. Sliding block 4. Crank plate 5. Pivot for crank plate 6. Connecting rod
7. Connecting pin for ram 8. Ram 9. Pin A. Fixed pin
Advantages of this method… 1:function simple so manufacturing cost is less, 2:less costly than lathe or milling machine, Disadvantages of method: 1:circular objects can not be finished; 2:-cutting only half of time ,
Thank you