PARKEN ENGINEERING MK127var1 Manuel
PARKEN ENG. EQ. CO. P/L
Parken Engineering
Abrasive Belt Roll Grinder
MK127var1
Operating and Maintenance
Instructions
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PARKEN
Abrasive Belt Roll Grinder
K127var1
Improve productivity by using Parken’s latest diamond
belted roll grinder.
Parken Engineering has developed a roll grinder,
capable of with standing the rapid removal of hard materials
from cylinder rods etc.
Used mainly as a lathe attachment, mounted to the
saddle of a lathe it is used as a roll grinder.
The K127var1 has been designed for use with
diamond belts where surface speeds of 10,000 surface ft per
minute are used.
Features:-
Belt capacity 100mm wide x 3353mm long
Power 11kw
Surface speed 500 meters/minute infinitely
variable to 3050 meters/minute
Head adjustable for free belt grinding
Coolant tap and nozzle
Compact design
Base complete with mounting holes
Vee belt driven spindle
Spindle heavy duty type No. 40 mounting taper
Overall belt guard
Regulated pneumatic belt tension and release
anual tracking
Chrome plated ram
Easy speed change with raise and lower buttons
11kw ac variable speed drive
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Abrasive belt selection
Stock removal rate Belt grade
Extra heavy 12-16-20
Heavy 20-24-30-36-40
edium 50-60-80
Light 100-120-150-A160-A130
edium Polishing 180-220-240-A100-A80-A65
Light Polishing 280-320—360-400-500-600-
A45-A16-A6
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Belt speeds for offhand grinding
aterial Belt speed meters/sec
steel 36
Cast steel 33
Stainless steel 34
Aluminium 40 when using coarse belts
Aluminium 34 when using fine belts
Brass 38
Titanium 13.5
Glass 25 silicon carbide
Glass 39 diamond
Rubber 23
Stone 35
Cobalt 25 when using coarse belts
Cobalt 19 when using fine belts
agnesium 28
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Belt tensions
Base for calculations
13 kg/25 mm width of belt for typical fabric backing
23 kg/25 mm width of belt for flex diamond
20 kg idler wheel assembly weight
2563 sq.mm piston area
Belt type Kpa for 100mm wide belt
At pressure gauge
Silicon carbide fabric backing 310 Kpa max.
Flexible diamond 430 Kpa max.
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Pressure switch Pressure regulator
Pressure
isolator
Pressure gauge
Filter press
To drain
Tracking adjusting
knob
onnect air
Supply here
PARKEN ENG. EQ. CO. P/L
Recommended operating parameters
3 flexible diamond belts
belt speed 36-51 met/sec
work rotation oppose belt direction
workpeice speed 0.5 – 1.6 met/sec
traverse rate 10 – 25% of belt width per rev
contact wheel 90A plain faced or high land to groove
ratio (grinding)
65A plane faced (polishing)
coolant water with rust inhibitor
belt tension see table
current load 3 to 8 amps over idling
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Preparation
1 With roll grinder mounted at correct center height align contact
wheel parallel with work roll.
2 Air must be supplied to belt tension cylinder to enable pressure
switch
1. Dressing of contact whee
a. Grind a work roll approx. 200 mm long
b. Fasten a piece of 80 grit silicon carbide abrasive to ground
surface.
c. Switch on contact wheel at maximum speed
d. With work piece locked in place feed contact wheel over
abrasive and take light cut to clean up contact wheel.
e. Carefully dress outside edges of contact wheel lightly
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Operating instructions
1 switch off belt tension, and remove belt and replace with
selection, retension belt, using table as guide.
2 Turn belt on at slow speed and track belt using knob at side of
machine
3 The work roll and the roll grinder should be running in opposite
directions at the contact point.
3 Start the traverse of the roll grinder and infeed until contact is
made then load up to approximately 3 amps over idle on first couple
of passes.
4 Infeed at either end of work roll
5 Limit the travel to enable contact wheel to come off roll by no
more than 1/3 contact wheel width.
6 For abrasive belts gradually increase loading after each pass.
7 Finer finishes are obtained by using finer belts, refer to belt
speed and type selection table.
8 Contact wheels should be dressed and balanced to prevent
excessive belt wear.
9 Remove high spots
10 Spark out before each belt grade reduction
11 Ensure coolant flow is filtered and flowing, covering full width
of belt
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Unpacking container
1 Remove steel straps
2 Remove top of box
3 Remove sides
4 Remove electrical control cabinet
5 Undo coach screws holding the roll grinder in
container
6 Using lifting bracket provided remove roll grinder
from container base
7 Undo screws holding machine to box section
8 ount machine on sub base to suit center height of
lathe
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Table des matières
