Do please It is required to design a fly-press, as shown in Fig. 6.17, which is capable ofpunching 50 mm diameter circles from a 1.5 mmRmBallBallNutScrewHandlePillarPunchDieFig. 6.17 Fly-pressthick mild steel sheet. The ultimate shear strength ofthe sheet metal is 375 N/mm and it can be assumedthat shearing will be complete when the punchpenetrates through half the thickness of the sheet.The screw, with square threads, is made of steel 30C8(S = 400 N/mm), while the nut is made of bronze.The factor of safety is 3. The operator is expectedto sit in front of the fly-press, insert the sheet by hisleft hand and operate the handle by the right hand.The total working stroke consists of a one-quarterrevolution, 45° in front of the press and 45° behindthe press. During the returnraised by 5 mm to provide clearance to insert thesheet. The forward or working stroke is completedin 1 second. The balls are made of cast iron, with amass density of 7280 kg/m and the radius R is 500mm. Neglecting collar friction, calculate(i) the dimensions of the screw;roke, the punch is

Answered: Image /qna-images/answer/b05df91c-d420-4a23-acdc-5af3b560bce4.jpg

Answered: Nut Screw Handle Runch

Engineering

Mechanical Engineering

Nut Screw Handle Runch

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

Question

Do please

It is required to design a fly-
press, as shown in Fig. 6.17, which is capable of
punching 50 mm diameter circles from a 1.5 mm
Rm
Ball
Ball
Nut
Screw
Handle
Pillar
Punch
Die
Fig. 6.17 Fly-press
thick mild steel sheet. The ultimate shear strength of
the sheet metal is 375 N/mm and it can be assumed
that shearing will be complete when the punch
penetrates through half the thickness of the sheet.
The screw, with square threads, is made of steel 30C8
(S = 400 N/mm), while the nut is made of bronze.
The factor of safety is 3. The operator is expected
to sit in front of the fly-press, insert the sheet by his
left hand and operate the handle by the right hand.
The total working stroke consists of a one-quarter
revolution, 45° in front of the press and 45° behind
the press. During the return
raised by 5 mm to provide clearance to insert the
sheet. The forward or working stroke is completed
in 1 second. The balls are made of cast iron, with a
mass density of 7280 kg/m and the radius R is 500
mm. Neglecting collar friction, calculate
(i) the dimensions of the screw;
roke, the punch is

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