background image

 

3

 

 
Having unpacked your machine and its accessories, please check the contents against the 
equipment list “What’s in the box”, if there are any discrepancies, please contact us using the 
procedures laid down in the catalogue. Please dispose of the packaging responsibility, much 
of the material is bio-degradable. The machine and its accessories will arrive coated with 
heavy corrosion preventative grease. This will need to be cleaned from the machine, its 
components and accessories prior to its being set up and commissioned. Use coal oil, paraffin 
or a proprietary degreaser to remove the barrier grease. Be warned, it will stain if you splash it 
on clothing etc., wear overalls et al., rubber gloves are also a good idea, as is eye protection if 
your cleaning process tends to be a little bit enthusiastic. After cleaning, lightly coat the 
machine with a thin layer of light machine oil. N.B if you used paraffin / kerosene make sure 
you apply this thin film sooner rather than lather 
 
Please read the instruction Manual prior to using your new machine; as well as the installation 
procedure, there are daily and periodic maintenance recommendations to help you keep your 
machine on top line and prolong its life. Keep this instruction Manual readily accessible for 
any other who may also be required to use the machine. 
The BV20M required to be mounted on a rigid bed, this is to ensure stability of the machine 
and to attenuate any vibration that is generated when the machine is running, (especially with 
eccentric work mounted in the chuck). 
 
The bed should be flat and set level in both planes, and at a height that enables comfortable 
operation of the machine. It is not necessary to anchor the bed through to the floor, but it must 
be stable enough to remain immovable during any normal forceful operations (especially 
tightening) carried out whilst operating your lathe. 
 
If you are preparing your own bed for the machine, it should be at least 870mm long by 
320mm wide, you will need to drill two 14mm 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 plate and fill the headstock with 
SAE20 oil to a level slightly above the sight glass. Do not overfill. The gearbox does not have 
oil sealed bearing fitted throughout, and if you overfill oil will leak out. 
The machine was fully greased and oiled before leaving the factory, but it would certainly be 
prudent for you to check and re-oil all the lubrication points and lube all the beds / slides etc., 
before start up. Refer to the lubrication chart later in this manual. 
Check the tension of the drive belt. If the belt is too slack, tighten by adjusting the motor 
mounting plate, ensuring that you maintain co-linearity of the two pulleys. 
Although the machine has been thoroughly tested at the factory, it is recommended that you 
carry out a “running in” procedure to check for correct gear meshing, vibration, etc., ensure 
the lathe is running “forward” (i.e. the spindle is turning towards you). Select the lowest 
spindle speed i.e. 170rpm, and run for approximately 20minutes, check for vibration, 
excessive noise, etc. After the 20min period, increase the speed one step at a time and run 
for approximately 5 minutes in each gear. Stop the machine before changing gear. If 
everything appears satisfactory, reduce the speed to one of the lower registers; manually 
drive the saddle back towards the tailstock, check the saddle feed engages positively; engage 
the saddle feed and drive the saddle toward the headstock, checking for smoothness of 
movement, etc. Engage and disengage the saddle several times during its travel and check 
that its travel pick up is smooth. If everything appears to be satisfactory, move the saddle to a 
position about mid travel, MAKE SURE THE SPINDLE IS STOPPED, switch the machine into 
reverse and check the machine functions equally well whilst running in reverse. 

 

 

Assembly Instructions 

Содержание BV20BL

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

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 14: ...14 Parts Diagram ...

Отзывы: