Advantages of Hydrostatically slide ways

(I). High load carrying capacity.

(II).High rigity.

(III). Longer life

(IV). Easy heat removal by oil leakage.

(V). No variation of friction force because there is no metal to metal contact.

(VI). Dust and metallic microelements are flashed away by oil forces.

<![endif]-->Determine the actual diameter for drawing a cup of 2- inch diameter having 2- inch depth and corner radius 1/6 – inch. If the material is 1/32 –inch thick also determine radius of Punch and Die.

Solution: Given data, d=2˝, h=2˝, r=1/10˝, t=1/32˝

The ratio = =32>20

D= ²+4dh)

= ²+4*2*2)

=4.47˝

According to the general rule for adding 1/8 to the blank diameter for each inch of cup diameter 2*1/8 =1/4

So, D=4.47+0.25=4.72˝

The radius is 4 times of the material thickness = 4*1/32=1/8 (Ans.)

The punch radius is 4to 10 times of the material thickness = 10*1/32=5/18(Ans)

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