IEMCA SIR 52 F, Manual For Use And Maintenance, Page: 97 / 174

6 - USE AND OPERATION SIR-52-P/F
EN
6 - Pag. 21 / 24
6.9.2 Change of the working diameter without changing the guide tube diameter
1 End all bars in the drum and stop the lathe with the collet open.
2 Press the
key to move the bar-pusher back to its limit switch (backwards).
3 Desactivate the automatic carriage feeding through the key or other control.
4 Press the key in order to actuate the rotation of one of the lathe spindles station and
carry out these operations in order to release all spindles from the remaining bars.
5 Press push-button to stop the bar feeder.
6 Open the rear hatch.
7 Unhook the drum lever by pressing it downwards and manually pull the drum up to the stop
(approx. 65 cm).
8 Remove sleeves (§ 5.10.).
9 Disassemble the spindle collets and assemble the new collets suitable to the new bar profile.
10 Assemble the sleeves using the reductions supplied, if any.
11 Place the drum in working position, pushing it carefully and making sure there is no
jamming.
12 Lock the drum with the suitable lever and close the rear hatch.
13 Position the magazine control selector on "0".
14 Remove all the remaining bars from the magazine.
15 Prepare the new barstocks (§ 6.6.).
16 Feed the barstocks (§ 6.7.).
17 Adjust the magazine (§ 5.1. and 5.2.).
18 Press the
key to start the bar feeder.
19 Position the magazine control selector on "1".
20 Press the
key to feed the bar-pusher of 200/300 mm.
21 Press the key to rotate the clamp arm towards the drum.
22 Press the key to position the bar-pusher to the limit switch.
23 Press the key to lock the bar-pusher carriage.
24 Press the key to open guides.
25 Press the key to rotate the clamps bar outside the drum.
26 Press the key to close clamps.
27 Press the key to extract the bar remnant.
28 Press the key to open clamps; bar remnant thus released will drop.
29 Push the button to bring the clamp unit into operating position.
30 Turn the switch in position.
31 Manually open the lateral case in the clamps area.
32 Disassemble the collet and assemble the new collet with a standard bar remnant of the new
bar introduced.