Summary of Contents for PARKEN ENGINEERING MK127var1
- Page 1 PARKEN ENG. EQ. CO. P/L Parken Engineering Abrasive Belt Roll Grinder MK127var1 Operating and Maintenance Instructions PARKEN ENGINEERING EQ. CO. P/L 1/15 127var3mf.doc12/15/11...
- Page 2 PARKEN ENG. EQ. CO. P/L PARKEN ENGINEERING EQ. CO. P/L 2/15 127var3mf.doc12/15/11...
- Page 3 Used mainly as a lathe attachment, mounted to the saddle of a lathe it is used as a roll grinder. The MK127var1 has been designed for use with diamond belts where surface speeds of 10,000 surface ft per minute are used.
- Page 4 PARKEN ENG. EQ. CO. P/L Abrasive belt selection Stock removal rate Belt grade Extra heavy 12-16-20 Heavy 20-24-30-36-40 Medium 50-60-80 Light 100-120-150-A160-A130 Medium Polishing 180-220-240-A100-A80-A65 Light Polishing 280-320—360-400-500-600- A45-A16-A6 PARKEN ENGINEERING EQ. CO. P/L 4/15 127var3mf.doc12/15/11...
- Page 5 PARKEN ENG. EQ. CO. P/L Belt speeds for offhand grinding Material Belt speed meters/sec steel Cast steel Stainless steel Aluminium 40 when using coarse belts Aluminium 34 when using fine belts Brass Titanium 13.5 Glass 25 silicon carbide Glass 39 diamond Rubber Stone Cobalt...
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Page 6: Belt Tensions
PARKEN ENG. EQ. CO. P/L 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. - Page 7 PARKEN ENG. EQ. CO. P/L Recommended operating parameters 3M 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...
- Page 8 PARKEN ENG. EQ. CO. P/L Preparation With roll grinder mounted at correct center height align contact wheel parallel with work roll. Air must be supplied to belt tension cylinder to enable pressure switch Dressing of contact wheel Grind a work roll approx. 200 mm long Fasten a piece of 80 grit silicon carbide abrasive to ground surface.
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Page 9: Operating Instructions
PARKEN ENG. EQ. CO. P/L Operating instructions switch off belt tension, and remove belt and replace with selection, retension belt, using table as guide. Turn belt on at slow speed and track belt using knob at side of machine The work roll and the roll grinder should be running in opposite directions at the contact point. - Page 10 PARKEN ENG. EQ. CO. P/L Unpacking container Remove steel straps Remove top of box Remove sides Remove electrical control cabinet Undo coach screws holding the roll grinder in container Using lifting bracket provided remove roll grinder from container base Undo screws holding machine to box section Mount machine on sub base to suit center height of lathe PARKEN...
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Page 11: Installation
PARKEN ENG. EQ. CO. P/L Installation Mount roll grinder onto sub base/adaptor to bring contact wheel up to correct center height of lathe Position roll grinder on cross slide so that maximum capacity is obtained, and rigidity is retained. Bolt sub base to cross slide together with roll grinder making sure that contact wheel center is inline with lathe center Mount electrical control cabinet clear of any moisture... - Page 12 PARKEN ENG. EQ. CO. P/L Optional line filter Remove bridge to connect pressure switch between terminals 1&2 Connect supply here Connnect motor to Terminals U, V, W Connect EARTH PARKEN ENGINEERING EQ. CO. P/L 12/15 127var3mf.doc12/15/11...
- Page 13 PARKEN ENG. EQ. CO. P/L Grinding problems and there cure problem Harder Softer Dress contact wheel wheel wheel √ Glazing or dulling √ Slow cut √ Too aggressive √ √ Chatter √ Burning √ Dubbing of edges PARKEN ENGINEERING EQ. CO. P/L 13/15 127var3mf.doc12/15/11...
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Page 14: Maintenance
PARKEN ENG. EQ. CO. P/L Maintenance depending on use spindle bearings should be greased every 3 months using standard bearing grease at the grease nipples located above spindle housing. keep area around machine clear of obstructions clean area inside contact wheel daily as any buildup of swarf will cause balancing problems and as a consequence bad surface finish PARKEN... - Page 15 PARKEN ENG. EQ. CO. P/L clean area inside contact wheel daily as any view without belt buildup of swarf will cause balancing problems and as a consequence bad surface finish PARKEN ENGINEERING EQ. CO. P/L 15/15 127var3mf.doc12/15/11...