NTN_CVJ

Technical Presentation

CONSTANT VELOCITY JOINT ENGINEERING DEPARTMENTProperty of NTN corporation

CONSTANT VELOCITYUNIVERSAL JOINTS

9811

INDEX

> CVJ Application for Automobiles

> Business Outline

> CVJ Classification

> Development Program

Property of NTN corporation

9811PDC01-01Property of NTN corporation

CVJ APPLICATION FOR AUTOMOBILES

Rear Axlesfor

IRS and 4WD

Front Axlesfor

FWD and 4WD

Propeller Shaftsfor

RWD and 4WD

1997

95.8%

0%AFRICA

EUROPE

0% NORTH AMERICA

11%

CENTRAL & SOUTHAMERICA

0%

ASIA 8.5%

9811

PDC01-02Property of NTN

corporation

CVJ MARKET SHARE

OCEANIA20%

JAPAN38%

NTN13%

OTHERS87%

NTN

38%

IMPORT5%

INHOUSE

51%

OTHERS6%

CVJ SUPPLIERS IN JAPAN (’97)

CVJ SUPPLIERS IN THE WORLD (’97)

GKN28%

NTN13%

INHOUSE28%

DELPHI17%

OTHER14%

9811PDC01-03

HALFSHAFT MONTHLY PRODUCTION QUANTITY

NTN IWATA（ JAPAN） 610,000 HALF SHAFTS

NTN OKAYAMA （ JAPAN） 240,000 HALF SHAFTS

NTN DRIVESHAFT INC. （U.S.A） 200,000 HALF SHAFTS（AVERAGE DATA FROM Oct.,’97 TO Mar.,’98）

NTN SALES & CVJ SHARE


NTN SALES(’97 US $1=\127)

BEARINGS etc

82%

CVJ 18%

($2241 MIL)

($499 MIL)

MAJOR CUSTOMERSBMW KIA MOTORCAMI AUTOMOTIVE M.BENZDAEWOO MAZDADAIHATSU MITSUBISHIDANA CORPORATION MMMA(DSM)FORD NISSANFUJI HEAVY INDUSTRIES ROVERGM RENAULTHONDA SUBARU ISUZU AUTOMOTIVEHYUNDAI SUZUKIHYUNDAI PRECISION & IND. CO. TOYOTAISUZU YAMAHAKAWASAKI ZF


9811PDC01-05

CVJ PRODUCTION HISTORY


（DOMESTIC）

0

50

100

150

200

250

0

300

600

900

1200

1500

CU

MU

LATI

VE H

ALF

SHA

FT P

RO

DU

CTI

ON

QU

AN

TITY

( ×

106 )

MO

NTH

LY H

ALF

SHA

FT P

RO

DU

CTI

ON

QU

AN

TITY

( ×10

3 )

CUMULATIVE HALFSHAFT

PRODUCTION QUANTITY

100 MILLION(88/7)

‘64 ‘65 ‘70 ‘75 ‘80 ‘85 ‘90 ‘95 ‘98

MONTHLY HALFSHAFT PRODUCTION QUANTITY

200 MILLION (97/6)

START 1963

NDI PRODUCTION STARTED A PART OF PRODUCTION QTY TRANSFERREDFROM JPN TO USA

9811PDC01-06

NDI CVJ PRODUCTION HISTORY


0

3

6

9

12

15

0

50

100

150

200

250

CUMULATIVE HALFSHAFT PRODUCTION QUANTITY

MONTHLY HALFSHAFT PRODUCTION QUANTITY

START 1989

MO

NTH

LY H

ALF

SHA

FT P

RO

DU

CTI

ON

QU

AN

TITY

( ×10

3 )

CU

MU

LATI

VE H

ALF

SHA

FT P

RO

DU

CTI

ON

QU

AN

TITY

( ×

106 )

’91 ’92 ’93 ’94 ’95 ’96 ’97 ’98


HEAD OFFICE

SALES OF FICE

MFG. PLANT

NDI PLANT, R&D CENTER

SALES CHANNELDIRECT TRADEJAPAN

TAIWAY

UNIDRIVE

NDI

J/V

J/V

NTN TransmissionsEurope (2000.6~)

GROBAL NETWORK

9811PDC01-08

AREA PLANT NAMEProduction

StartProduction Capacity

（UNIT;HALF SHAFTS PER MONTH）


CVJ FACILITY

JAPANIWATA

OKAYAMA

750,000

250,000

1973

1982

U.S.A. NTN DRIVESHAFT INC. 420,000 1989

FRANCE NTN TRANSMISSIONS EUROPE 400,000

2000(Under Planning)

THAILAND NTN MANUFACUTURING THAILAND － Under Planning

ISO 9000 & QS-9000PLANTKUWANA

IWATA Brg. PLANT

OKAYAMA

TAKARAZUKA

NAGANO

CVJ ENGINEERING DEPT.

KONGO

AMF

CMF

BOWER(2)

METTMANN

NTN(UK)

NBCC

NDI

IWATA CVJ PLANT

OKAYAMA CV J PLANT

REGISTEREDQS- 9000

ISO 9002

QS- 9000

ISO 9002

QS- 9000

QS- 9000

ISO 9001

QS- 9000

QS- 9000

QS- 9000

QS- 9000

ISO 9002

ISO 9002

QS- 9000

QS- 9000

QS- 9000

DATENOV.1997

MAY.1995

SEP.1997

JAN.1996

MAR.1997

MAR.1997

JAN.1997

APR.1998

APR.1997

AUG.1998

SEP.1998

MAY.1992

DEC.1996

NOV.1997

JAN.1998

JUN.1998



CVJ CLASSIFICATION

C.V. JOINT( DRIVE SHAFT)

IN PRODUCTION

PROTOTYPE

FOR DRIVESHAFT

EBJ HIGH EFFICIENCY COMPACT BALL FIXED JOINT

UJ UNDERCUT FREE JOINT

FIXEDJOINT

BJ BALL FIXED JOINT

EDJ HIGH EFFICIENCY COMPACT DOUBLE OFFSET JOINT

DOJ DOUBLE OFFSET JOINT

AC-TJ ANGULAR CONTACT TRIPOD JOINT

FTJ FREE RING TRIPOD JOINT

SFJ SHUDDERLESS FREE RING TRIPOD JOINT

LJ CROSS GROOVE JOINT

PLUNGINGJOINT

DOJ DOUBLE OFFSET JOINT

AC-TJ ANGULAR CONTACT TRIPOD JOINT

LJ CROSS GROOVE JOINT

PLUNGINGJOINT

HLJ HIGH SPEED CROSS GROOVE JOINT

PDC01-11

CVJ CLASSIFICATION

9811Property of NTN corporation

FOR PROPELLER SHAFT

BJ BALL FIXED JOINTFIXEDJOINT

C.V. JOINT(PROPELLER SHAFT)

ACB

MAX． JOINT DIMENSION(mm)ANGLE SERIES A B C

◎ BJ68L R42.2 φ65.3 φ17.0◎ BJ71L R44.0 φ69.0 φ18.0◎ BJ75L R45.8 φ72.6 φ19.0◎ BJ79L R47.7 φ76.3 φ20.1◎ BJ82L R49.5 φ79.9 φ21.2◎ BJ87L R51.3 φ83.6 φ22.2

46.5° ◎ BJ92L R53.2 φ87.4 φ23.3◎ BJ95L R54.5 φ90.0 φ24.0◎ BJ100L R56.9 φ94.7 φ25.4◎ BJ104L R59.1 φ99.2 φ26.5◎ BJ109L R61.1 φ103.2 φ27.6○ BJ117L R65.1 φ111.2 φ29.7◎ BJ125L R69.1 φ119.2 φ31.8○ BJ133L R73.2 φ127.4 φ33.9

◎：IN　PRODUCTION ○：PROTOTYPE

9811PDC01-12

BJ : Ball FIXED JOINT



○ UJ68 R44.0 φ69.0 φ17.0◎ UJ71 R45.8 φ72.6 φ18.0◎ UJ75 R47.7 φ76.3 φ19.0○ UJ79 R49.5 φ79.9 φ20.1◎ UJ82 R51.3 φ83.6 φ21.2

５０° ◎ UJ87 R53.2 φ87.4 φ22.2○ UJ92 R54.5 φ90.0 φ23.3◎ UJ95 R56.9 φ94.7 φ24.0○ UJ100 R59.1 φ99.2 φ25.4○ UJ104 R61.1 φ103.2 φ26.5○ UJ109 R63.1 φ107.2 φ27.6○ UJ117 R65.1 φ111.2 φ29.7

◎ ：IN　PRODUCTION ○：PROTOTYPE

9811PDC01-13

UJ : UNDERCUT FREE JOINT


ACB


○ DOJ68 71.2 61.5 17.0◎ DOJ71 75.7 65.0 18.0◎ DOJ75 79.7 69.0 19.0

25° ◎ DOJ79 83.0 72.5 20.1◎ DOJ82 87.4 75.7 21.2◎ DOJ92* 93.6 82.0 23.3◎ DOJ95 97.7 85.5 24.0◎ DOJ100 100.7 89.0 25.4◎ DOJ104* 106.7 95.0 26.5◎ DOJ109* 110.2 98.5 27.6○ DOJ117 117.2 105.5 29.7◎ DOJ125 124.2 112.5 31.8◎ DOJ68L 75.7 65.0 17.0◎ DOJ71L 79.7 69.0 18.0○ DOJ79L 87.4 75.7 20.1◎ DOJ87L 94.6 83.0 22.2

30.5° ◎ DOJ95L 100.7 89.0 24.0◎ DOJ100L 104.7 93.0 25.4◎ DOJ104L 110.2 98.5 26.5○ DOJ109L 113.7 102.0 27.6○ DOJ117L 120.7 109.0 29.7◎ DOJ125L 127.7 116.0 31.8○ DOJ133L 135.0 123.5 33.8

*：MAX. ANGLE 23�◎： IN PRODUCTION ○：PROTOTYPE

9811PDC01-14

DOJ : DOUBLE OFFSET JOINT


φC

φB

φA


23° ○ TJ68 71.0 61.5 17.025° ◎ TJ71 74.0 65.0 18.0

◎ TJ75 78.0 68.0 19.0◎ TJ79 82.0 71.4 20.1◎ TJ82 85.8 74.6 21.2

23° ◎ TJ87 90.2 78.7 22.2◎ TJ92 93.1 81.6 23.3◎ TJ95 96.3 84.8 24.0◎ TJ100 100.5 89.0 25.4○ TJ104 106.7 95.0 26.5○ TJ109 110.2 98.5 27.6

9811PDC01-15

AC-TJ : ANGULAR CONTACT TRIPOD JOINT


φC

φA

SECTION X-X

◎：IN PRODUCTION

○：PROTOTYPE

JOINT DIMENSION(mm)SERIES A B C

◎ LJ75 88.0 86.0 19.0◎ LJ87 96.0 94.0 22.2◎ LJ95 102.0 100.0 24.0◎ LJ109 110.0 108.0 27.6○ LJ117 122.0 120.0 29.7

◎:IN PRODUCTION○:PROTOTYPE

9811PDC01-16

LJ : CROSS GROOVE JOINT


φC

φB

φA

9811PDC01-17

● : IN PRODUCTION○ : PROTO TYPE

FIXED JOINT PLUNGING JOINTBJ EBJ UJ DOJ EDJ TJ FTJ SFJ LJ HLJ

68 ● ○ ● ○71 ● ● ● ●75 ● ● ● ● ● ●79 ● ○ ● ● ○82 ● ● ● ● ○ ● ● ●87 ● ○ ● ● ● ● ●92 ● ○ ● ● ● ○95 ● ○ ● ● ○ ● ● ○ ● ●

100 ● ○ ● ● ● ○104 ● ○ ● ○ ○109 ● ○ ○ ● ○ ○ ● ○117 ○ ○ ○ ○ ○125 ● ●133 ○ ○

Plunging Joint (Prop.)JOINTSIZE

NTN CVJ AVAILABILITY


SIZE AND TYPE VARIATION’97/10 ～’98/3

71（10.7%）

75 (23.3%)

125（0.2%）68（5.2%）

79(3.2%)

82(20.3%)

87（11.3%）

92(3.2%)

100 （3.2%）

104 （0.4%）

109（0.9%）

95（11.1%）

TYPE

FTJ(1.3%)

BJ(49.9%)

DOJ(26.5%)

TJ(16.1%)

SFJ(3.9%)

LJ(2.0%)

UJ(0.2%)

HLJ(0.02%)

SIZE


9811PDC01-19

DURABILITYTEST STATION

18 STANDS

NVH TESTSTATION8 STANDS

BOOTDURABILITY

TEST MACHINE12 STANDS

STRENGTHTEST STATION

17 STANDS

TOTAL：55 STATIONSTEST CAPABILITY


9811PDC01-20

PROTO CAPABILITY


・EXTERNAL CYCLIC GRINDING MACHINE

・INTERNAL CYCLIC GRINDING MACHINE

・BALL GROOVE GRINDING MACHINE

・NUMERICAL CONTROL LATHE・LATHE・BROACHING MACHINE・MACHINING CENTER・SPLINE ROLLING MACHINE・THREAD ROLLING MACHINE・DRILLING MACHINE

TOTAL：40 EQUIPMINT

MEASUREMENTAPPARATUS 5

PRESS MACHINE 5

GRINDING MACHINE 10

CUTTING MACHINE 20

9811PDC01-21

CVJ DEVELOPMENT PROGRAM


MARKET ＮＥＥＤＳ DEVELOPMENT TASK

Down Sizing

Manufacturing ProcessImprovement

Improved TJ

Improved DOJ

Boot Noise Elimination

Durability Improvement

No Lead Grease

Propeller Shaft

Hub Joint

Steering Joint

Weight ReductionCompact Size

Cost Reduction

Better NVH

Increase Reliability

Environment

Other Application

9811PDC01-22

HIGH EFFICIENCY COMPACT BALL FIXED JOINT EBJ

REVOLUTION (r.p.m.)

0

20

40

60

80

100

0 500 1,000 1,500 2,000 2,500

TEM

PER

ATU

RE

RIS

E（℃

）

CURRENT BJ

EBJ

TORQUE ２４５N・mANGLE ５ deg.


A

SIZE

95928782

BJ （φA） EBJ（φA）

90.087.483.679.9

83.679.976.372.6

WEIGHT

REDUCTION(g)

100 94.7 87.4104 98.3 90.0 520

470420410400390

9811PDC01-23

HIGH EFFICIENCY COMPACT DOUBLE OFFSET JOINT EDJ


SIZE

95928782

DOJ （φA） EDJ（φA）

85.5

75.7

82.0

72.5

WEIGHT

REDUCTION(g)

100 89.0 85.5

82.079.0

79.075.7

280240200190180

0

20

40

60

80

100

0 500 1,000 1,500 2,000

CURRENT

EDJ

TORQUE ２４５N・mANGLE ５ deg.

REVOLUTION (r.p.m.)

TEM

PER

ATU

RE

RIS

E（℃

）

1 SIZE DOWN

LONG LIFE GREASEDURABILITY

50%UP

NTG2218


LONG LIFE ＆ HIGH STRENGTHPARTSTARGET

NTG30B

HIGH

STRENGTH

SBM40

CAGE

SHAFT

SCM415B

STRENGTH

15%UP

CURRENT DEVELOPMENT

BALL TRACK & I/D GRINDING COLD FORMING

SLOT CUTTING COLD FORMING

BALL TRACK & I/DSLOT

COLD FORMING BJ OUTER RACE


9811PDC01-25

CURRENT DEVELOPMENT

CUP STAMPING

STEM COLD FORGING

MASS(#71 SIZE) 815g 670g (-18%)

COLD FORGINGWITH STEM

9811PDC01-26

COLD FORGINGSTEM

STAMPED CUP

PRESSED DOJ OUTER RACE


PRESS FITTING

9811PDC01-27

COLD IRONING LJ


Cold ironing and grinding for ball grooves

Cold ironing for ball grooves

OUTER RACE INNER RACE

COLD IRONING

&GRINDINGOUTER RACE

INNER RACE

BALL GROVES

STEM

BALL GROVES

CURRENNT DEVELOPMENT

MILLING &GRINDING

BROACH COLD IRONING

SOLIDWELDING

COLD IRONING &GRINDING

Property of NTN corporation9811PDC01-28

COMPACT TPE BOOT

・IMPROVED MATERIAL

・APPROPRIATE SHAPE

・IMPROVED MOLDING

119.6 96.3

Φ94

.0

Φ91

.0

CONVENTIONAL DESIGN COMPACT DESIGN

WEIGHT

INSIDE VOLUME

300 cm3 220 cm3

92 g 57 g

BOOT

9811PDC01-29

SFJ : SHUDDERLESS FREE RING ＴＪ

Property of NTN corporationOPERATING ANGLE

3RD

OR

DER

CO

MPO

NEN

T O

FIN

DU

CED

CYC

LIC

AXI

AL

LOA

D TJ

AC-TJ

FTJ

SFJ

100

80

60

40

20

4 １０ 146 8 12

THE SHUDDER PROBLEM AT THE VEHICLE START IS EXTREMELY IMPROVED.

DOJ -RPE

DOJ-ST DOJ-RPCF DOJ-RPE

TORQUE ：100Nm

REVOLUTION ：0rpm

ANGLE ：0degDOJ-ST DOJ-

RPCFDOJ-RPE

PLU

NG

ING

RESIS

TA

NC

E

0 2 4 6 8 10 mm

PLUNGING LENGTHProperty of NTN corporation

9811PDC01-30

9811PDC01-31

VEHICLE’S NVH IMPROVEMENT SHUDDER


ＳＨＵＤＤＥＲ

ＦＴＪ

ＳＦＪ

ＤＯＪ

APPLIED AC-TJ

3RD ORDER COMPONENT OF INDUCED CYCLIC AXIAL LOAD

JOINT ANGLE

20% DOWN

20% DOWN

NO PROBLEM

50% DOWN

７0% DOWN

4° 8°

(SIZE 100)

9811PDC01-32

VEHICLE’S NVH IMPROVEMENT IDLING VIBRATION & BEAT NOISE


BEAT NOISE ONHIGH SPEED RUNNING

DOJ- RPC,RPCF

DOJ- RPE

AC-TJ,FTJ,SFJ

APPLIED DOJ-ST

IDLING VIBRATIONOF A/T VHHICLE

± 1 mm

± 3 mm

LOW FRICTION RANGE

6TH ORDER COMPONENT OF INDUCED CYCLIC AXIAL LOAD

FULL RANGE NO PROBLEM

75% DOWNθ=4°

USE OF LOW FRICTION GREASE

9811PDC01-33

CHARACTERISTIC－ PLUNGING JOINTS FOR HALFSHAFT


EVALUATION5 : SUPERIOR4 : GOOD3 : FAIR2 : MARGINAL1 : POOR

ITEM

NVH

BASIC CHARACT-ERISTICS

SHUDDER

IDLING VIBRATIONBEAT NOISE

VIBRATION AT HIGH ANGLE

SWING DIAMETER

TEMPERATURE RISEPLUNGING CAPACITY

DOJ-ST

DOJ-RPCF

DOJ-RPE

EDJ-RPCF TJ AC-

TJ FTJ SFJ LJ

5 5 5 5 2 3 4 4.52 3 4 3 5 5 5 52 4 4 4 5 5 5 5

5 5 5 5 4 4 4 4

3 3 3 5 4 4 3 32 3 3 4 5 5 5 55 5 5 5 4 4 4 4

5

5

5

3

23

4


NO LEAD GREASE--- ENVIRONMENTAL ISSUES ---

MOLYLEX No.2

NTG2218

VU-3A702

NTG30B

SSG-6003

REAMAX Fs No.1

NTG2218-M

NTG30B-M

DEVELOPING

NN2312

DEVELOPING

DEVELOPING

BJ,DOJ

BJ

DOJ,TJ,SFJ

DOJ,TJ,SFJ

DOJ,TJ,SFJ

PROPELLER SHAFT

φ10

2

9811PDC01-35

HLJ109FLOAT TYPE

CURRENT LJ109FLOAT TYPE

HLJ109NON FLOAT TYPE

PAT. PENDING29.832.0HLJ - PROPELLER SHAFT


32.4

φ10

2

φ10

8

CURRENT LJ109FLOAT TYPE

HLJ109FLOAT TYPE

HLJ109NON FLOAT TYPE

REV. X ANGLE 50% UP 50% UP

PLUNGING RESISTANCE 35% DOWN 35% DOWN

ARTICULATION EFFORT

MASS 20% DOWN 11% DOWN

PLUNGING CAPACITY 26mm 25 mm 40 mm

35% DOWN35% DOWN

9811PDC01-36

CHARACTERISTICS - CVJ FOR PROPELLER SHAFT (#87)


LJ HLJ DOJ AC-TJ BJ

WEIGHT (Kg) 1.20 1.00 1.77 1.41 (#75) 0.81Plunging Capacity (mm) 16 17 36 30 -

22,000 (30,000)36,000( = 6゜)

≧ 13,000( = 2゜)

40,000( =4゜)36,000( =6゜)

MAX. OPERATING ANGLE 5 5 8 3 10

INDUCED CYCLICAXIAL LOAD

ARTICULATIONEFFORTPLUNGINGRESISTANCE

CAPACITY AXIAL LOADING

REV.ANGLE

3RD

6TH

+ + + + + + + + ━

+ + + + ━

+ + + + + + + + + +

+ + + +

+ + + + + +

+ +

+ +

+ + ━

━━

SJ : STEERING JOINT

DESIGN CONCEPT・ HIGH ANGLE CAPABILITY・ SIMPLE FEATURE・ SMOOTH OPERATION・ COMPACT

OUTER RACE BALL INNER RACE

& SHAFT

CIRCLIPCIRCLIP

SUPPORT RING SUPPORT RING

CAGEJOINTCENTER

φ48

CROSS SECTION9811PDC01-37


CHARACTERISTICS・ MAX OPERATING ANGLE 45deg

・ ROTATIONAL BACK LASH 10′MAX

（AT TORQUE＝±1N・m）

・ ARTICULATION TORQUE 0.98 N・m MAX

・ ROTATIONAL TORQUE

・ DURABILITY Ｔ=±29.4N・mω=±600°（18cpm） 3×105 OKθ=45deg

N・m MAX0.196

9811PDC01-38

NTN ENGINEERING SUPPORT SYSTEM


EUROPE

JAPANASIA

USA

CUSTOMER

NTN EUROPE・GERMANY・UK・FRANCE・(NTE R&D) ENGINEERING

ADMINISTRATIONDEPT.

INTERNATIONALTRADE HQ.

CVJ ENGINEERING DEPT.・DESIGN SECTION・TESTING SECTION・TRIAL PRODUCTION

SECTION

RESEARCH & DEVELOPMENT・AUTOMOTIVE PRODUCTS・PRODUCTION ENG.

CVJ PLANTJPN : IWATA

OKAYAMAUSA : NDIEU : (NTE)

NBCA

NTN

OSAKA HQ.

9811PDC01-39

Micro CADAM-XV3.17A

HARDWARE:IBM RS/6000 25TOS:IBM AIX V3.2.5.1

CATEXP V4

CADAMTRANSLATER

2D

2D,3D

2D,3D

3D

CATEXPV4

3.5inchFloppy diskDAT 8mmDAT 4mm

Universal file

I-DEASMODELFILE


I.G.E.S V5

PDGS MODELFILE


CATIAV4.1.8

IBM RS/6000 43PIBM AIX V4.1.5

I-DEASV4

IBM RS/6000 38T

IBM AIX V4.1.5

PDGSRev.26

IBM RS/6000 38TIBM AIX V4.1.5

I.G.E.S V5DIFU V3.0

DXF (GX3/GX5)dmn dos


I.G.E.S V5

NTN CAD DATA TRANSFER SYSTEM


Documents

NTN_CVJ