55737844 Alat Potong Pada Mesin Bubut Finish

5/11/2018 55737844 Alat Potong Pada Mesin Bubut Finish - slidepdf.com

http://slidepdf.com/reader/full/55737844-alat-potong-pada-mesin-bubut-finish 1/21

Cutting Tool at LatheCutting Tool at LatheMachineMachine

Created byCreated by ::

FebriFebri Arif Arif PurnomoPurnomo 20092009--33--005 / TPM / 2B005 / TPM / 2B--0101

Akademi Tehnik Mesin IndustriAkademi Tehnik Mesin Industri



Cutting Tool at Lathe MachineCutting Tool at Lathe Machine

Introducing About Turning ToolIntroducing About Turning Tool

The Election of Turning Tool`s SubstanceThe Election of Turning Tool`s Substance

Sharpener Process of Turning ToolSharpener Process of Turning Tool

Kinds of Defect at The Turning ToolKinds of Defect at The Turning Tool ClosingClosing



1.1. Introducing About Turning ToolIntroducing About Turning Tool

a.a. The Geometric of Turning ToolThe Geometric of Turning Tool

b.b. Development of Turning Tool`s ShapeDevelopment of Turning Tool`s Shape

c.c. Criteria for Turning ToolCriteria for Turning Tool

BackBack nextnext



The Geometric of Turning ToolThe Geometric of Turning Tool Basically cutting tool has threeBasically cutting tool has three

main anglesmain angles::

1)1) clearenceclearence angle.angle.

2)2) cutting angle.cutting angle.

3)3) rake angle.rake angle.

Main angles at turning toolMain angles at turning tool

back next



Main Angles at Turning ToolMain Angles at Turning Tool

alfaalfa isis clearence angleclearence angle..angleangle betweenbetween thethe backback

sideside ofof thethe cuttingcutting tooltool withwith thetheworkwork piecepiece thatthat functionsfunctions totopreventprevent frictionfriction betweenbetween thethe tooltoolandand thethe workpieceworkpiece..

BetaBeta isis cutting anglecutting angle..AnAn angleangle thatthat affectsaffects thethe

hardnesshardness ofof cuttingcutting toolstools.. WhenWhenthethe workpieceworkpiece hardhard (brittle)(brittle) useuselargelarge.. WhenWhen thethe wworkpieceorkpiece softsoft(ductile)(ductile) useuse smallsmall..

gamagama isis rakerake angleangle..This angle affects theThis angle affects thestabbing cutting tool against thestabbing cutting tool against theworkpieceworkpiece.. When theWhen the workpieceworkpiecehard (brittle) usehard (brittle) use small (or evensmall (or evennegative)negative).. When the wWhen the workpieceorkpiecesoft (ductile) usesoft (ductile) use largelarge..

Back



Development of Turning Tool`s ShapeDevelopment of Turning Tool`s Shape

a)a) TheThe entireentire bodybody isis mademade ofof materialmaterial ofof cuttingcutting tooltool ..ExampleExample :: TS,TS, LATS,LATS, HSSHSS..

b)b) TheThe frontfront halfhalf isis mademade ofof materialmaterial ofof cuttingcutting tools,tools,whilewhile thethe backback isis mademade ofof softsoft materialmaterial andand thenthen

weldedwelded..c)c) OnlyOnly thethe tiptip isis mademade ofof materialmaterial ofof cuttingcutting tools,tools, thenthenweldedwelded withwith brassbrass..

d)d) TheThe tiptip ofof thethe sideside piecespieces areare mademade ofof cclampedlamped cuttingcuttingtooltool`̀ss material,material, bolted,bolted, andand insertedinserted inin aa holderholder (insert(inserttip)tip).. ThisThis ccuttingutting toolstools mademade fromfrom carbide,carbide, aa layerlayer ofoftitanium,titanium, ceramic,ceramic, diamonddiamond..

BackBack nextnext



Criteria for Turning ToolCriteria for Turning Tool

ISO 1ISO 1 use for longitudinal turninguse for longitudinal turning. Plan angle 75. Plan angle 75°° 1SO 21SO 2 use for longitudinal and transversal turninguse for longitudinal and transversal turning. Plan angle 45. Plan angle 45°°

1SO 31SO 3 use for longitudinal and transversal turninguse for longitudinal and transversal turning (( out from center)out from center)..plan angle 0plan angle 0°°

1SO 41SO 4 use for longitudinal turning with small depth of cut (use foruse for longitudinal turning with small depth of cut (use forfinishingfinishing)), plan angle 100, plan angle 100°°

1SO 51SO 5 use for transversal turning toward the centeruse for transversal turning toward the center, plan angle 0, plan angle 0°°.. 1SO 61SO 6 use for longitudinal turninguse for longitudinal turning. plan angle 90. plan angle 90°°..

1SO 71SO 7 use for transversal turning toward the centeruse for transversal turning toward the center Plan angle 0Plan angle 0°°..

1SO 81SO 8 use for boring through holeuse for boring through hole. Plan angle 75. Plan angle 75°°..

1SO 91SO 9 use for boring (do not through)use for boring (do not through). Plan angle 90. Plan angle 90°°..

PahatPahat undercutundercut use to create a grooveor to cut the workpieceuse to create a grooveor to cut the workpiece.. PahatPahat UlirUlir use for making threaduse for making thread..

back



The Election of Turning Tool`s SubstanceThe Election of Turning Tool`s Substance

a) a) Workpiece`s basic substanceWorkpiece`s basic substance

Cutting tools should be harder than theCutting tools should be harder than the workpieceworkpiece..

b) Cutting Speed b) Cutting Speed

The higher Cs selectedThe higher Cs selected soso cutting tools must have a good heat resistant properties.cutting tools must have a good heat resistant properties.

c) c) SSurf aceurf ace QQualityuality

The better the surf ace quality is required, cutting tools must have good wear The better the surf ace quality is required, cutting tools must have good wear resistant properties.resistant properties.

d) d) Frequency of UseFrequency of Use

The more frequently used, cutting tools must have good wear resistant properties.The more frequently used, cutting tools must have good wear resistant properties.

e) e) PricePrice

EconomicEconomic judgment judgment, the chea per price but the quality as closely as possible., the chea per price but the quality as closely as possible.

Back Back nextnext



Sharpener Process of Turning ToolSharpener Process of Turning Tool

A.A. Criteria for Sharpening Turning ToolCriteria for Sharpening Turning Tool

B.B. Grinding CGrinding Clarencelarence AAnglengle

C.C. Grinding RGrinding Rakeake AAnglengle

back next



Criteria for Sharpening Turning ToolCriteria for Sharpening Turning Tool

T The demands of turning tool sharpeninghe demands of turning tool sharpening areare ::

a.a. Grinding result must be 1 faceGrinding result must be 1 face..b.b. FlatnessFlatness ( ( minimal 75%)minimal 75%)

c.c. Surface qualitySurface qualityd. Geometry in accordance with specifications.d. Geometry in accordance with specifications.e.e. Size in accordance with specificationsSize in accordance with specifications..

BackBack nextnext



Grinding CGrinding Clarencelarence AAnglengle

grinding clearence angle can be done at greif or great D1 machinegrinding clearence angle can be done at greif or great D1 machine.. GrindingGrinding

in the Greif machine done manually in the sense that the process of grinding just rely onin the Greif machine done manually in the sense that the process of grinding just rely on

feelingfeeling..

on the greif machine clearence angleon the greif machine clearence angle can be gener ated by setting the slope of thecan be gener ated by setting the slope of the

machine ta ble positionmachine ta ble position .. The first clearence angle isThe first clearence angle is 88°° and the second one isand the second one is 55°°.. TheThe88°° angle useangle use cyliconcylicon carbidecarbide grinding wheelgrinding wheel while thewhile the 55°° angleangle useuse diamonddiamond oneone..

there are different types of grinding wheels are used because the demands of thethere are different types of grinding wheels are used because the demands of the

requested level of refinement is not the samerequested level of refinement is not the same.. For turning tool, refinement of the mostFor turning tool, refinement of the most

influential in turning process is at an angle of 5influential in turning process is at an angle of 5 °° because this section that will function into the because this section that will function into the

side pieces in the process of turningside pieces in the process of turning. The angle of . The angle of 88°° has function as free angle.has function as free angle. soso

demand for surf ace quality is notdemand for surf ace quality is not necessar necessary.y.

on the great d1 machine we use diamond grinding wheel. We also use someon the great d1 machine we use diamond grinding wheel. We also use some

support tool to fullfill all specificaton requirements.support tool to fullfill all specificaton requirements.

BackBack nexnextt



Grinding RGrinding Rakeake AAnglengle

grinding rake angle only can be donegrinding rake angle only can be done

at great d1 machine. This process calledat great d1 machine. This process calledlaping.laping.

backback



Kinds of Defect at The Turning ToolKinds of Defect at The Turning Tool

turningturning tooltool saidsaid damageddamaged oror cantcant bebe functionsfunctions asas itit shouldshould ifif theythey havehavebeenbeen changeschanges inin geometrygeometry onon thethe mainmain angleangle (alfa,(alfa, betabeta andand gama)gama) oror changeschangesinin shapeshape thatthat wouldwould interfereinterfere atat thethe processprocess..

whenwhen thethe cuttingcutting tooltool isis alreadyalready experiencingexperiencing changeschanges inin geometrygeometry ofof thethecuttingcutting edges,edges, ThenThen thethe processprocess willwill notnot gogo wellwell.. SuchSuch asas :: badbad surfacesurface quality,quality,

biggerbigger powerpower required,required, ExcessiveExcessive heatheat generatedgenerated duedue toto frictionfriction betweenbetweencuttingcutting tooltool andand workpieceworkpiece.. LongLong timetime processprocess andand couldcould leadlead toto moremore fatalfataldamagedamage toto thethe workpieceworkpiece,, machinemachine andand operatoroperator..

TheThe damagedamage ofof thethe turningturning tooltool suchsuch asas ::

RadiusRadius OnOn thethe EdgeEdge

WearWear onon TheThe ClaearenceClaearence AngleAngle

WearWear onon TheTheR

akeR

ake AngleAngle BuiltBuilt UpUp CuttingCutting EdgeEdge

CracksCracks inin CarbideCarbide TipTip

BrokenBroken CarbideCarbide TipTip

CarbideCarbide TipTip OffOff

BackBack nextnext



Radius On the EdgeRadius On the Edge

radiusradius onon thethe edgeedge happenhappenduedue toto thethe frequensyfrequensy ofof useuse isisalreadyalready exeedingexeeding thethe thresholdthresholdofof cuttingcutting tool`stool̀ s lifetimelifetime..

cuttingcutting tool`stool`s lifetimelifetimedependsdepends onon thethe processprocess ofof workworkthatthat involvesinvolves thethe useuse ofof feed,feed,cuttingcutting speedspeed andand workpieceworkpiecematerialmaterial.. Therefore,Therefore, itit needsneeds totosharpeningsharpening cuttingcutting tooltoolcontinuelycontinuely..

BackBack

next



Wear on The Claearence AngleWear on The Claearence Angle

WearWear onon thethe clearenceclearenceangleangle sideside isis causedcaused byby usingusingfeedfeed tootoo bigbig oror tootoo smallsmallclearenceclearence angleangle atat thethe cuttingcuttingtooltool.. SoSo therethere isis frictionfriction

betweenbetween tooltool andand workpieceworkpiece..ThisThis cancan bebe avoidedavoided byby enlargingenlargingthethe clearenceclearence angleangle..

backback

next



Wear on The Rake AngleWear on The Rake Angle

WearWear onon thethe rakerake angleanglecausedcaused byby exessiveexessive heatheat(overhaeating)(overhaeating).. TheThe heatheat arisingarisingfromfrom thethe cuttingcutting tooltool waswas takentaken

byby thethe chipchip andand distributeddistributed tototurningturning tooltool throughthrough rakerake angleanglesideside..

BackBack

next



BuitBuit up cutting edgeup cutting edge

Built up cutting edge isBuilt up cutting edge ismelted workpiece materialmelted workpiece materialattached to the cutting tool.attached to the cutting tool.

This melt being cool andThis melt being cool andharden so it become a newharden so it become a newcutting edge.cutting edge.

backback

next



Cracks in Carbide TipCracks in Carbide Tip

CracksCracks inin thethecarbidecarbide tiptip causedcausedbyby overheatingoverheating withwithnono continuouscontinuous coolingcoolingoror suddenlysuddenly coolingcooling..

backback

next



Broken Carbide TipBroken Carbide Tip

itit isis ha ppenha ppen baecause baecause thethe dephtdepht of of

cutcut isis tootoo largelarge or or excessiveexcessive cuttingcutting speedspeed..

backback

next



Carbide Tip OffCarbide Tip Off

TheThe liberationliberation carbidecarbidetiptip isis mainlymainly duedue toto thethe

bindingbinding betweenbetween carbidecarbide tiptipandand itit holderholder lessless wellwell (the(theresulresul ofof brassing)brassing)

back



Thanks for your attentionThanks for your attention

gr azie per gr azie per la vostr ala vostr a attenzioneattenzione

ich danke Ihnenich danke Ihnen für Ihre Aufmerksamkeitfür Ihre Aufmerksamkeit

obrigadoobrigado pela sua pela sua atençãoatenção

je vous remercie je vous remercie de votre attentionde votre attention

gr aciasgr acias por por susu atenciónatención

asanteasante kwakwa mawazo yakomawazo yako

dankiedankie vir vir jou jou aandagaandag

ju f alënderoj ju f alënderoj për për vëmendjenvëmendjen tua jtua j

55737844 Alat Potong Pada Mesin Bubut Finish

Documents

Transcript of 55737844 Alat Potong Pada Mesin Bubut Finish