DoAll C-4033NC - Feed Rate; Head Elevation and Sensing Arm; Minimum Bar End

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FEEDFORCEADJUSTMENTS(Continued…)
 Generally, top performance from a sharp saw band
resultsfromrelativelylowFeedForcevalvesettings.
Itwillbenecessarytoincreasethesettingasthesaw
bandbecomesduller.Thiswillkeepthecuttingrate
constantthroughoutthelifeofthesawband.
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 Feedforceadjustmentsarenotnecessaryfor
changing stock cross‐sections. A balancing valve
enablesthesawbandtomaintainauniformcutting
rate.
Reducingcuttingrateandbandspeedforpipe,tubing
andstructural.
1. Increasing loading per tooth occurs when sawing
thin stock sections. Although the blade can bear
someoverloading,acuttingratereductionmustbe
made.
2. Whenitbecomesnecessarytomodifysolidsection
sawingrecommendations:(a)measurethethinnest
sectiontobecut;(b)applyapercentagefactorof
40%forthinmaterialto70%formaterialswitha
wallover25mm;(c)useahighbandspeed,but
never exceed the maximum speed recommended
onthechartfoundatthebeginningofthe
OPERATIONchapterforstockofthesamesize.
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FEEDRATE
1. Correct feed rate is important for helping: (a)
determineoverallcuttingaccuracyandfinishofcut;
(b)improvebladelifebyeliminatingbreakageand
tooth stripping at the cut’s start and break‐out
points.
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HEADELEVATIONANDSENSINGARM
Headelevation
1. Sawheadelevationduringautomaticsawingcycle
is initiated when the head down limit switch is
actuated. The saw head then rises to a height
determinedbyasensingarm.
2. Afteracuthasbeenmadeinthemanualoperating
mode,the actuatedhead downlimit switchstops
machine operation. To lift the head off the limit
switchandresumeoperation,theoperatormust:(a)
pushandholdthesawheadupbutton.
Sensingarm
1. Thesensingarmworksinconjunctionwiththehead
clearlimitswitchtoassurethesawheadisraised
sufficientlyaboveexistingstocksothatautomatic
indexing or manual stock positioning can be
accomplishedsafely.
Sensingarmoperationwhenthesawheadrises
1. Thesawheadliftsthesensingarmabovethestock
atarapidrate(thereisnoslowheadraisingrate)
until it actuates the head clear limit switch. This
causes saw head upward movement to stop the
bladeapproximately25mm above thestock.This
clearanceanticipatespotentiallycrookedoroutof
roundstockbeingused.
2. Ifoperatinginautomaticmode,thefixedvisethen
unclamps, the index vise clamps, and stock is
indexed forward. Following the advance of stock,
thefixedviseclampsandtheindexviseunclamps.
3. Whenthefixedviseunclampspriortoindexing,its
jawopensjustenoughtoallowstockadvancement.
Thevisejawscanbeopenedwideronlywhenthe
sawheadhasbeenmanuallyraisedabovethejaws.
Thispreventsdamagetojawsorsawguidearm
whenfullyopeninginalowerposition.
Leftsawguidearmadjustmentforstockwidth
mustbemademanuallybytheoperator.
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Sensingarmoperationwhenthesawheadlowers
1. Thesawheadlowersattherapidapproachrate
untilstockiscontactedbythesensingarm.Afeed
rateisthenestablishedandcuttingbegins.
2. Sensing armcontact with thestock inmaintained
throughoutthecut.Afteracuthasbeenfinished:
(a)theheaddownlimitswitchisactuated;(b)the
sawheadrises.
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MINIMUMBAREND
1. Whentheindexingviseiscompletelyforward,both
ofitsvisejawsextendtowardsthefrontvisejaws.
Thisextension,togetherwiththenestingdesignof
thevises,permitsautomaticindexingofstockuntil
asmallbut‐endremains.
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C‐3028NC C‐4033NC C‐420NC
Min.barend 95mm 110mm 110mm
 C‐5650NC C‐560NC 
Min.barend 115mm 155mm 
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2. If the stock is shorter, it will not be stable in the
indexvise.
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