Mechanical Engineering - Workshop Technology - Discussion
Discussion Forum : Workshop Technology - Section 1 (Q.No. 15)
15.
In sheet metal blanking, shear is provided on punches and dies so that
Discussion:
9 comments Page 1 of 1.
Padal said:
6 years ago
It is one device which operated by screw-like screw jack load.
VICKY said:
7 years ago
How load is reduced? Please explain.
Ashwin Vishwakarma said:
8 years ago
It is called scissor action, taper angle is provided to the punch or die so that the material is sheared from one end to the another, whereas if the punch is flat the work piece will be seen as cracked from the blank due to the force and this force will be maximum than the shearing or punching force.
Sohel said:
9 years ago
Generally in a cutting process there are requirement of two type of cutting tools i.e. upper and lower tool. In punching and blanking the lower tool is fixed. Due to which the upper blade is usually angled so that the cut progresses from one end to the other, thus reducing the required force.
Shaji said:
10 years ago
Please explain in some other way.
Mohit Aggarwal said:
1 decade ago
I think it's clearance not shear.
Saikumar said:
1 decade ago
At the punch or die the shear is provided to avoid the force but the work done is same.
Normally the punch is a plane face but in shear it is slanted to an angle so that the force formed will reduce on the machine.
Normally the punch is a plane face but in shear it is slanted to an angle so that the force formed will reduce on the machine.
C.V.RAMESH KUMAR said:
1 decade ago
Please give explanation option.
Parmeshwar Sahu said:
1 decade ago
How can possible it?
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