| TECHINICAL
SPECIFICATION FOR KNUCKLE JOINT PRESS |
| |
Unit |
NKJ-100 |
NKJ-160 |
NKJ-250 |
NKJ-400 |
NKJ-630
|
| Capacity |
kn |
1000 |
1600 |
2500 |
4000 |
6300 |
| Stroke
Length |
mm |
63 |
63 |
80 |
100 |
125 |
| Stroke/min |
mm |
60 |
60 |
50 |
50 |
40 |
| Slide
Area [LR* FB] |
mm |
315x315 |
360x400 |
400x400 |
560x450 |
630x630 |
| Bolster
Area [LR* FB* Ht.] |
mm |
400x360x75 |
400x450x90 |
500x630x100 |
630x700x120 |
630x800x150 |
| Height
of Bed Above Floo |
mm |
710 |
710 |
200 |
900 |
950 |
| Shut
Height over Bolster [SDAU] |
mm |
250 |
250 |
315 |
315 |
400 |
| Slide
Adjustment |
mm |
10 |
15 |
15 |
20 |
20 |
| Ejector
Force |
kn |
40 |
100 |
100 |
150 |
150 |
| Ejector
Stroke |
mm |
25 |
80 |
80 |
40 |
40 |
| Rated
Work/ Stroke |
kg.m |
200 |
320 |
750 |
1600 |
3150 |
| Main
Drive Motor |
kW/rpm |
3.7x1500 |
7.5x1500 |
11x1500 |
15x1500 |
22x1500 |
| Slide
Adjustment Motor |
kW/rpm |
--- |
0.75x1000 |
1.5x1000 |
1.5x1000 |
2.2x1000 |
| Approx.
L-R |
mm |
1200 |
1300 |
1700 |
2100 |
2200 |
| Size
F-B |
mm |
1200 |
1300 |
1600 |
2200 |
2500 |
| O/A
Ht. |
mm |
2700 |
2900 |
3200 |
4000 |
4500 |
| Approx.
Weight |
kg. |
6000 |
7500 |
15000 |
25000 |
35000 |
| Air
Pressure |
Kg./cm2 |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
We
reserve the right to change design and modify specification
at the descretion of our Engineering Department.
ADVANTAGES
KNUCKLE JOINT PRESS IS IDEAL FOR MANUFACTURING HIGH PRECISION
PARTS.MATERIAL SAVING COMPARED TO CONVENTIONAL MACHINNING
PROCESS IS 40% OR MORE. BECAUSE OF HIGH SURFACE FINISH &
ACCURACY. THESE COLD FORMED PARTS ARE ON INCREASING DEMAND.
OUR KNUCKLE JOINT PRESSES AS A GENETRAL PRACTICE ARE PROCIDED
WITH MECHANICAL EJECTOR WHICH TAKES THE DRIVE FROM THE CRANK
SHAFT THUS THE WHOLE MECHANISM IS SYNCHRONISED. THE EJECTION
STROKE IS ADJUSTABLE. ENERGY CONSUMPTION THROUGH REDUCED MOTOR
POWER LOWERS THE UNIT COST.
GENERAL
FEATURE
Knuckle joint press is ideal for forming
operation where tolerance is required. It is designed for
operation requiring slow but high force at lower zone of the
stroke, suited, therefore for coining, extruding, sizing,
embossing and thick plate blanking etc.
By
virtue of the linkage system, the ram speed is very low as
it approaches the BDC. This low punch entry speed allows enough
time to plastic flow of material during the critical cold
forming zone. This feature also helps to forming of different
shapes.
FRAME
The frame is right built from fusion welding
quality steel plates, premachined & preloaded, on the
load bearing surfaces during welding, stress- relieved &
then accurately machined. Openings are provided in uprights
for materials movement across.
DRIVE
The shafts are made of forged carbon alloy
steel, gear in cast- steel and pinion in forged alloy steel.
The teeth are made helical for higher capacity presses. All
pins are forged carbon alloy steel. All bearing and contact
surfaces are ground.
SLIDE
The slide both upper and lower are single
cast steel pieces hinged to upper link and lower link respectively
through pins housed and profusely lubricated inside the slide.
One pair of pneumatic cylinders counter-balances the self
weight of lower slide.
The
lower slide is proved with knock-out bar generally one number.
Unlike
other presses, the slide adjustment mechanism is on the upper
slide which has taper-plate arrangement at the top-one fixed
to slide and the other is moved (slided) horizontally either
manually or through an electric motor drive.
CLUTCH
& BRAKE
Clutch & Brake generally combined is
multi-disc type with non-asbestos liners. Profuse fins in
the castings help to dissipate heat. Designed for instant
engagement and disengagement and, easily accessible for maintenance.
The brake is spring- released automatically when the clutch
is engaged.
LUBRICATION
Lubrication system is centralized automatically
and recirculatory with timer to ensure sufficient lubrication
in all bearing surfaces. The pump integral to the unit is
chosen to cater for required line pressure and oil volume
at the required points.
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