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PRECISION BENCH LATHE

BV20BL

OPERATION MANUAL

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Summary of Contents for BV20BL

Page 1: ...PRECISION BENCH LATHE BV20BL OPERATION MANUAL ...

Page 2: ... supplied with a mould 13 Arnp Plug and 3 core power cable Before using the machine inspect the cable and the plug to make sure that neither are damaged If any damage is visible have the machine inspected repaired by a suitably qualified person If it is necessary to replace the plug it is preferable to use an unbreakable type that will resist damage Only use a 13 Arnp If extension leads are to be ...

Page 3: ... holes to allow for bolt fixing Set out the centers of the holes as follows sizes are minimum excepting distance between centers From the left side of the bed Headstock side 170mm 150mm from the front edge of the bed Distance between centers 650mm second hole again 150mmfrom front edge Bolt the lathe to the bed using M12 nuts bolts and washers Once the lathe is mounted remove the headstock cover p...

Page 4: ... Leadscrew Gearbox ratio 6 1 Weight 140Kg Overall size Lathe only 1050 x 615 x 560mm Main Axis This is the axis established through the spindle of the headstock It is horizontal to and parallel with the lathe bed along its length Work Axis This is the axis established by the work piece it is horizontal to but not necessarily parallel with the lathe bed along its length Traverse Axis This is the ax...

Page 5: ...ns available rotates at a selected ratio to the spindle to enable the various screw threads to be cut or to provide a feed rate for the saddle when auto feed is selected Chuck Safety cover A clear acetate cover mounted on a pivot bar on the rear top front face of the headstock it can be tipped out of the way to access the chuck when it is stationary and repositioned over the chuck during operation...

Page 6: ...down to engage the feed As there is no synchronising dial indicator fitted for thread cutting to ensure correct pick up during thread cutting leave the auto feed lever engaged Disengage the tool clear of the work Stop the spindle electrically reverse the drive system and drive tool back clear of the working piece stop the spindle switch back to normal and set the new cutting depth and restart the ...

Page 7: ...and forward across this base about the central axis of the lathe There are two opposing screws set in the base that control the movement of tailstock the screws have to be adjusted sequentially i e loosen tighten loosen tighten etc to move the tailstock Gear change levers Two levers marked A and B which in their setting select the different spindle speeds of the lathe Refer to the Speed change cha...

Page 8: ... Fig 2 Tailstock barrel Clamping lever Chuck assembly Machine Illustration and key parts description Chuck safety cover Chuck Headstock Tool Post Tailstock Rack Leadscrew Protection cover Compound slide Saddle ...

Page 9: ...e control Traverse slide control Auto feed lever Traverse slide Fig 4 Tailstock barrel lock Tailstock barrel Tailstock drive handle Tailstock clamping Tailstock offset screw Fig 5 Gear change levers B A Reversing switch under cover Machine Illustration and key parts description ...

Page 10: ...eadstock gearbox by four cap head bolts Unscrew the bolts and remove the cover to inspect the gearbox or replace or top up the oil There is no gasket beneath the cover plate so ensure the mating surfaces are clean before replacing the cover 18T reversing The 18T reverse tumbler gear when fitted enables the rotation of the leadscrew to be reversed For left hand threads as Fig 6 or in the case of an...

Page 11: ...11 Fig 8 Fig 9 Headstock cover plate Oil sight glass Oil drain plug Door for change gear box Fig 10 Machine Illustration and key parts description Door micro switch ...

Page 12: ...untings H Daily Pre use 1 Clean all swarf and chips away from the machine bed slide surfaces and the tool post 2 Exercise the slide and ensure no swarf etc is lodged in the drive shaft tunnels 3 If you have been using suds make sure the machine is thoroughly dried off Clear the suds tray of all swarf and chips especially around the drain 4 Check the tool ensure it is usable the next time if not re...

Page 13: ...63 50 35 0 45 45 50 60 80 26 50 65 80 42 0 5 30 80 40 24 50 63 80 40 0 6 45 60 50 22 50 55 80 42 0 7 63 45 60 20 40 80 21 0 75 45 65 40 19 60 63 80 38 0 8 60 55 50 18 50 63 80 30 1 0 45 80 30 16 50 80 21 1 25 45 80 24 14 50 42 80 35 1 5 63 42 60 40 12 50 60 80 21 1 75 63 60 24 11 50 55 80 21 2 0 63 65 21 10 60 42 80 30 2 5 45 40 100 30 9 40 45 100 21 3 0 63 40 100 35 8 60 42 100 30 Oil Lubrication...

Page 14: ...14 Parts Diagram ...

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