R Emedies F Or H Ole M Aking P Roblems - Rotabroach Element30/3 Manual

Element 3 0 M anual
12) R EMEDIES F OR H OLE M AKING P ROBLEMS
Problem
1) M agnetic b ase Material b eing c ut m ay b e t oo t hin f or e fficient
won't h old holding.
effectively
Swarf o r d irt u nder m agnet.
Irregularity o n m agnet c ontact o r w ork-­‐piece.
Insufficient c urrent g oing t o m agnet d uring d rilling
cycles.
2) C utter s kips Magnetic b ase i s n ot h olding e ffectively.
out o f c entre-­‐
punch m ark a t Worn a rbor b ushing a nd/or e jector c ollar.
initiation o f c ut
Too m uch f eed p ressure a t s tart o f c ut.
Cutter i s d ull, w orn, c hipped o r i ncorrectly
sharpened.
Poor c entre-­‐punch m ark; w eak p ilot s pring; p ilot n ot
centred i n c entre-­‐punch m ark.
Worn o r b ent p ilot, w orn p ilot h ole.
Loose b olts o n m otor b ushing s upport b racket, m ain
casting o r l oose g ib a djusting s et s crews.
3) E xcessive Incorrectly r e-­‐sharpened, w orn o r c hipped c utter.
drilling p ressure
required Coming d own o n s warf l ying o n s urface o f w ork-­‐
piece.
Gibs o ut o f a djustment o r l ack o f l ubrication.
Swarf a ccumulated ( packed) i nside c utter.
4) E xcessive Steel s warf o r d irt u nder c utter.
cutter b reakage
Incorrectly r e-­‐sharpened o r w orn c utter.
Cutter s kipping.
Slide n eeds a djustment.
Cutter n ot a ttached t ightly t o a rbor.
Insufficient u se o f c utting o il o r u nsuitable t ype o f
oil.
Incorrect s peed
5) E xcessive See c ause a nd r emedy a bove
cutter w ear
Incorrectly r e-­‐sharpened c utter.
Insufficient o r s pasmodic c utting p ressure.
11
Original i nstructions
Cause Remedy
Attach a n a dditional p iece o f m etal u nder t he
magnet, o r m echanically c lamp m agnetic b ase t o
work-­‐piece.
Clean m agnet.
Use e xtreme c are; f ile a ny i mperfections f lush t o
surface.
Confirm p ower s upply a nd o utput f rom c ontrol u nit,
check s upply c able.
See c auses a nd r emedies a bove.
New a rbor b ushing i s n eeded.
Light p ressure o nly i s n eeded u ntil a g roove i s c ut.
The g roove t hen s erves a s a s tabilizer.
Replace o r r e-­‐sharpen. S harpening s ervice i s
available.
Improve c entre-­‐punch a nd/or r eplace w orn p arts
Replace p art o r p arts
Adjust w here n ecessary
R e-­‐sharpen o r r eplace.
Take c are n ot t o s tart a c ut o n s warf.
Adjust s etscrews a nd l ubricate.
Clear c utter.
Remove c utter, c lean p art t horoughly a nd r eplace.
Always h ave a n ew c utter o n h and t o r efer t o f or
correct t ooth g eometry, t ogether w ith i nstruction
sheet.
See c auses a nd r emedies ( 2).
Tighten g rub s crews s upporting t he s lide.
Retighten.
Inject o il o f l ight v iscosity i nto t he c oolant-­‐inducing
ring a nd c heck t hat o il i s b eing m etered i nto c utter
when p ilot i s d epressed. I f n ot, c heck p ilot g roove
and a rbor i nternally f or d irt o r a pply o il e xternally.
(Even a s mall a mount o f o il i s v ery e ffective).
Ensure c orrect g ear i s u se f or t he c utter.
Refer t o i nstructions a nd a n ew c utter f or p roper
tooth g eometry.
Use s ufficient s teady p ressure t o s low t he d rill d own.
This w ill r esult i n o ptimum c utting s peed a nd c hip
load.
Jan 2 015