The schematic of a punch and die for punching washer is shown. Determine the force F needed to punch out washers with thickness of 5mm, inside diameter of 15 mm and outside diameter of 25mm. The average shear strength of the plate is 30 MPa and average compressive stress in the puncher is 65 MPa.

Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter29: Troubleshooting And Typical Operating Conditions For Commercial refrigeration
Section: Chapter Questions
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The schematic of a punch and die for punching washer is
shown. Determine the force F needed to punch out
washers with thickness of 5mm, inside diameter of 15 mm
and outside diameter of 25mm. The average shear
strength of the plate is 30 MPa and average compressive
stress in the puncher is 65 MPa.

Answer: F =___________________

plate
punch
die
F
die
die
washer
Transcribed Image Text:plate punch die F die die washer
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