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BIRSON FORGING SCREW PRESSES (UP STROKE)

These screw presses are specially designed to make bolt head of any kind of Nuts, Rivets, Motor Parts Axle half shaft, Engine valve and non-ferrous forging. Vincent presses are screw presses with friction drive on which the forging blow takes place in an upward direction.i.e. from bottom to top. On machines employing the vincent principle the screw nut is positioned in the top cross head of a frame type ram. Thus ram being moved upward in exial direction by rotation of longitudinally fixed screw. The bottom die of the Forging tools is secured to the lower cross head of the ram while the top die is fitted to a fixed bridge which is the part of the machine frame be employing this design, the forging forces do not act on the machine frames but are sustained by the ram. Ejector is provided at lower part of the ram. 

 
 
 
BIRSON FORGING SCREW PRESS VINCENT TYPE (UP STROKE)
Type Nominal Capacity Dia of Screw Stroke Slide Table Pieces/Hour Max.Dia of Bolt Capable
Forging
Max.length of bolt Capable Forging Foundaton Pulley size Power Required/H.P.
(Approx.) Motor R.P.M.
  Tons mm/inch mm/inch mm/inch   mm/inch mm/inch mm/inch mm/inch H.P./R.P.M
VFP 50 85/3¼ 300/12 200/8 800-1200 12/½ 250/10 840-585 100/4B 3/1440
VFP 100 110/4¼ 400/16 225/9 600-1000 20/¾ 300/12 930x610 100/4B 7.5/1440
VFP 125 115/4½ 450/18 225/9 500-900 22/⅞ 400/16 940x710 100/4B 10/1440
VFP 150 130/5⅛ 500/20 250/10 400-700 32/1¼ 450/18 1080x750 125/5C 15/1440
VFP 200 135/5⅜ 550/22 275/11 300-600 38/1½ 500/20 1115x790 125/5C 20/1440
VFP 300 155/6⅛ 600/24 275/11 200-500 50/2 600/24 1200x860 200/8C 25/960
VFP 400 175/7 650/26 300/12 150-300 63/2½ 650/26 1320x1000 200/8C 30/960
VFP 500 200/8 700/28 335/13 80-250 75/3 700/28 1470x1050 200/8C 40/960
VFP 630 225/9 760/30 355/14 70-225 90/3½ 760/30 1525x1100 200/8C 50/960
VFP 800 250/10 810/32 380/15 60-200 100/4 810/32 1600x1150 200/8C 60/960
VFP 1000 275/11 865/34 405/16 50-150 115/4½ 860/34 1750x1250 200/8C 70/960
 
 
Features and Advantages
• High useful working energy.
• Mechanical energy store.
• Overload protection by slipping wheel.
• Thermally stable ram guide ways with wear-proof guide gibs.
• High forging precision.
• No need to readjust ram with machine warming up.
• No jamming under load possible.
• Long Die life because of short Pressure-Contact Times.
• Sequence of different strokes on one work piece possible.
• Totally closed die forging capability.
 
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