Four Way Hacksaw All Calculation 3c3n5s

CALCULATION OF FOUR WAY POWER HACK SAW: DESIGN OF FRAME:

M I

σb y

=

……….(1)

Bending moment (M) = force X perpendicular distance = 30 X 300 X 9.81 Bending moment (M) = 88290Nmm 3

I=

bh 12

3

=

25 X 25 12

Y=

25 2

= 32552.08 mm4

=12.5

Therefore above value use in equation no (1).

288290 32552.08

=

σb 12.5

Therefore, σb = 33.90Nmm 33.90<105 Hence design is safe.

2.DESIGN OF PLATE:

M I

=

σb y

………….(1)

Bending moment (M) = force X perpendicular distance = 10 X 400 X 9.81 Bending moment (M) = 29430Nmm I=

b h3 12

=

Y=

300 X 33 = 675 mm4 12 3 2

= 1.5

Therefore above value use in equation no (1).

29430 675

σb 1 .5

=

Therefore, σb = 65.4Nmm 65.4 < 105 Hence design is safe.

Design of disc:

M I

σb y

=

………….(1)

Bending moment (M) = force X perpendicular distance = 10 X 300 X 60 Bending moment (M) = 5886 Nmm

I=

MR 4

2

2

=

10 X 9.81 X 60 4 Y=

120 2

= 60

Therefore above value use in equation no (1). σb 5886 88290 = 60 Therefore, σb = 4 Nmm

= 88290 mm4

4<105 Hence design is safe.