Sandvik-coromant Parting and grooving - users guide Instrukcja Użytkownika

USER’S GUIDEParting and Grooving

8CoroCut 1- and 2-edge inserts – the first choice systemInsertsThis system is based on a patented Rail and V-shaped design which, together with a lo

9C = Cut-off i.e. PartingG = GroovingT = TurningR = Round insert i.e. ProfilingA = Aluminium machining The first letter in the geometry name repre-s

10CoroCut3 – for shallow partingIntended for economical shallow parting in mass production.The triangular shaped 3-edged inserts are available in wid

11-5E-4E-5FQ-Cut 151.2 – for deep partingQ-Cut 151.2 is recommended for deep parting operations. The V-clamped 1-edged insert is ideal for parting ope

12Q-Cut 151.3 – for internal machining and small diameter face groovingQ-Cut 151.3 is to be used for internal machining (diameters from 20–40 mm) an

13CoroCut XS – for external small micro components CoroCut XS is a tangentially mounted system for precision machining in sliding head machines. CoroC

14CoroCut MB – a system for internal grooving, threading and turningCoroCut MB has a front mounted exchangeable insert. Intended for internal machini

15U-Lock 154.0 – for economical circlip groovingWe recommend the U-Lock 3-edged inserts for both external and internal circlip grooving.InsertsA prog

16CoroTurn XS – a system for internal precision machiningCoroTurn XS has an insert in the form of a carbide-rod mounted in a holder. It is intended fo

17CoroMill 327 – grooving cutter for milling applications CoroMill 327 is intended for circlip grooving, T-slots milling and all other slot milling op

The parting and grooving conceptParting and grooving is a turning category of its own with a wide range of machining applica-tions requiring dedicated

18CoroMill 328 - grooving cutter for milling applications CoroMill 328 is intended for circlip grooving, T-slots milling and all other slot milling op

19CFCSCMCRPartingFor parting we offer dedicated geometries with the CoroCut system. These geometries are designed to make the chip narrower than the g

20Machining specificationOperation: Parting off to centreMaterial: JIS SCM 415, CMC 02.1, HB 240Toolholder: LF123F10-2525BInsert: N123F2-0250-003-CRGr

21±0.1 mmPractical hintsFor a correct cutting process, be sure that the cutting edge height is maintained at a tolerance of ±0.1 mm of work piece cent

22Pip free partingTo avoid or minimise pips use right hand style or left hand style ground inserts with smallest possible front angle that gives an ac

23Component wall thickness, mmInsert width, la, mmInsert geometryTool system Feed start value, mm/r< 4 1 CM/CS CoroCut3 0.054–6 1.5 CM CoroCut 2

24Parting into a drilled hole.±0.1 mmFor correct cutting process, be sure that the cutting edge height is maintained at a toler-ance of ±0.1 mm of wor

25Burr free partingTo avoid or minimise burrs use right or left hand style ground inserts with smallest possible front angle that gives an acceptable

26Parting – thin-walled tubesWhen parting off into thin-walled tubes ensure the lowest possible cutting forces are gener-ated. Use inserts with smalle

27GroovingFor grooving applications we offer dedicated geometries with the CoroCut system, e. g. GF, GM, TF and TM. These geometries are designed to g

Simple and smart recommendations for parting and grooving operations ... 2The different systems and when to use them ...

28Single cut groovingSingle cut grooving is the most economical and productive method of producing grooves and is possibe for use on insert widths up

29AB4Ø 31.850.5 x 45º11.3When producing high quality grooves there is often a need for chamfered corners. One way to produce these is to use a standar

30Multiple grooving. operations.Plunge turning operation.Methods of turning groovesThe most common applications for wide grooves or turning between sh

31Ramping operation.Continue cycle until required depth is achieved.After the roughing operation a finishing cut is required to achieve good surface f

32Finishing of grooves Care must be taken when machining around the bottom radius of the groove. As the insert contours around the radius, most of the

33BAAxial turning – surface finishDue to the wiper effect achieved in axial turning with CoroCut it is possible to generate a high quality surface fin

34Recommended grade and cutting dataFirst choice geometry for turning of grooves is TF for low feed and TM for higher feeds.Starting grade is GC1125.

35Circlip groovingFor circlip grooving we have several main systems to choose from. For best economy use the three edged U-Lock 154.0 system (width 1.

36Face groovingFor components having an axial groove into the component it is important to choose the correct toolholder. The toolholder must be adap

37123123RoughingWhen roughing the first cut should always be on the largest diameter and work inwards. Cut one gives chip control but no chip breaking

2Simple and smart recommendations for parting and grooving operationsMore in-depth information, including practical hints is shown under each chapter.

38ø252,82,0ø177Ø 706Ø 90Machining specificationOperation: Face groovingMaterial: Stainless steel SS 2343, CMC 05.2Machine: CNC turning lathe Toolholde

39UndercuttingOn many components there is a need for a grinding operation to achieve very close tolerances. In order to grind into a shoulder a clear

40Internal groovingMany components have an internal groove, most of them are close to the entrance into the hole e.g circlip grooves. The most common

41Recommended grade and cutting dataStarting grade GC1125. Cutting speed 125 m/min and feed 0.07 mm/r.3.15Ø 403To avoid vibration the set up should ha

42When machining components with complex shapes CoroCut offers great opportunities for rationalization. Since one single tool can be used instead of r

43Wrap around is a problem that occurs with round inserts when plunging or profiling into corners. A large area of the insert is in contact all the ti

44Hard part machiningFor productivity increase without grindingModern manufacturing technology places increasing demands on components to be made in o

45reAdjust centre height to correct position to •get predictable tool life, see page 21.When machining pre-made grooves adjust •horizontal position

46Geometry RSMachining of aluminium and non-ferrous materialsMany components are made in aluminium or other non-ferrous materials such as copper, bras

47Heat resistant super alloys (HRSA)HRSA falls into three groups: nickel-based, iron-based and cobalt-based alloys. The physical properties and machi

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48CoroTurn HP – High pressure coolant In order to achieve chip-breaking in tita-nium alloys and to prolong tool life or to have increased productivit

49Small part machining – sliding head machinesThe machines and the demand put on the toolingSmall part machining and sliding head machines focus on co

50Choosing a tool systemCoroCut -SU-Lock -SCoroTurn 107 -SCoroTurn 111CoroCut MBCoroCut XSCoroCut XSCoroCut XSCoroTurn XSWork piece diameter r

51Holder with reinforced bladeRecommended grade and cutting dataStarting grade GC1125. Cutting speed 150 m/min and feed 0.08–0.1 mm/r.From 12–32 mm d

52CoroCut® XS for external grooving applicationsThe CoroCut XS programme includes grooving inserts ranging in width from 0.5 mm, with and without a ch

53CoroTurn® XS for internal machining(Diameter area from 4.2–12 mm)For internal grooving CoroTurn XS is the ideal tooling family. The smallest bore po

54The CoroTurn XS system includes different insert types for a wide range of applications i.e. grooving, profiling-grooving, face-grooving, pre-partin

55Recommended grade and cutting dataGrade GC1025. Cutting speed 100 m/min, feed 0.015 mm/r. GroovingInsert width (la), mm2.0Feed (fn), mm/r 0,01 0,

56Parting and grooving sets high demands on accessibility since the inserts are often fed deep into the material.This means narrow machining and there

57Screw clampingClamping of CoroCut 1 and 2-edge insertsThe insert clamping system has been designed to counteract high axial forces from both sides.

4CoroCut 2 CoroCut 1 CoroCut3 Q-Cut 151.2 Q-Cut 151.3 U-Lock 154.0Parting (Cut-off) Page 19Grooving Page 27Face grooving Page 36Turning Page 33Profili

58Insert seatsThe programme is based on eight different insert seats depending on insert widths and geometries, see the table.Insert seat size D E F

59Parting bladesIntended for parting-off and deep grooving applications. For mounting in the machine a separate tool block must be used having normal

60Short version. Long version. Holder for small part machining.To minimise risk of vibration and deflection always choose:Toolholder with smallest pos

61Face grooving shank holdersIntended for face grooving applications. Available in 0° and 90°, right and left hand style versions covering a large are

62Angled shank holdersIntended for profiling and shallow undercut-ting applications. Available in 7°, 45° and 70°, right and left hand style versions.

63Profiling bar. Grooving bar.Internal barsIntended for internal grooving applications. Available in right and left hand style bars from 16 to 50 mm d

64Coolant solutions.The CoroCut SL systemA universal modular system. Intended mainly for internal grooving and external face groov-ing applications. F

65Left hand tool = left hand adaptor+right hand cutting bladeRight hand tool = right hand adaptor+left hand cutting bladeLeft handRight handRight hand

6690° mounting• It is very important that the insert is mounted at 90° to the centre line of the workpiece in order to obtain perpendicular surface

67CoroCut MB for internal machining(Diameter area from 10 mm) CoroCut MB is a high precision grooving, turning and threading system for for machin-ing

5= First choice= Second choice = Third choiceDeep partingø ≤110 mmMedium partingø ≤40 mmShallow partingø ≤12 mmCoroCut 2 CoroCut 1 CoroCut3 Q-Cut 151.

68GroovingGrooving width from 0.7–3.0 for general grooving and circlip grooving.ProfilingRound insert styles for internal profiling and grooving avail

69The insert is front mounted and posi-tioned in three grooves for safe and stable mounting. The tool has four insert sizes for different hole diamete

70CoroMill 328 is used for internal and exter-nal circlip grooves and with diameters over 39 mm. CoroMill 328 has one insert size for circlip widths f

71GradesTo cover all types of workpiece materials the CoroCut family has a variety of different car-bide grades - from the highly wear resistant GC311

72The different grades Grade GC3115Based on a hard substrate, MT-CVD coated with TiCN-Al2O3 layer.A high wear resistant grade for grooving and turning

73Grade GC1005A fine grained carbide substrate, PVD coated with TiAlN layer.Most suitable for roughing of aluminium.Grade H10Uncoated carbide grade.Go

74The recommendations are valid for use with cutting fluid.•Note! For internal grooving, face grooving and undercutting the •speed should be reduced

751) Positive cutting geometry and coolant should be used2) Rm = ultimate tensile strength measured in MPa.For more cutting data information please ch

76Wear mechanism – Trouble shootingCareful observationsTo achieve best possible economy regarding tool life, workpiece quality and optimised cut-ting

77CauseExcessive temperature in cut-•ting zone.Unsuitable grade.•Lack of coolant supply.•SolutionReduce cutting speed and/or •feed.Choose more wea

6Internal grooving – min. hole diameterFace grooving – min. hole diameter ≥4,2 ≥10≥12≥25ø 6,2 ø 12 ø 24 ø 340,3 10 12 256,2-18 mm 14-30 mm 24-50 mm 40

78 1 2 3 4 5 6 7 8 9 10 11 12 16 17 Grooves are often designed in many different shapes and dimensions depending on the working area. Wi

79ToolholdersBoth conventional toolholders and Coromant Capto are available in different styles and for different applications.When grooving within ma

80CoroCut insert blanksStraight blanks for “Do it yourself grinding” are available in 9 widths from 2.3–11.6 mm. These blanks have a flat top which al

81Special productsFor even more complicated products our special tool design facility are able to produce inserts and toolholders to suit very specifi

Head office: AB Sandvik Coromant SE-811 81 Sandviken, Swedenwww.coromant.sandvik.com E-mail: [email protected]:055 ENG/01 Printed on rec

7Groove milling – min. cutter diameter ø39 mmø10 mmType 327 Type 328