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FRENCO Brochures

Company Brochure A 01Product Lines A 02

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Ultra-High PrecisionIC – Gear Artefacts HPN Spline Gauges HPLMaster Gears, Master Wheels HPRLClamping Systems HWSGear and Spline Manufacture HH

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Instruments for Size Inspection Measuring Ball Inserts and Measuring Pins VKInspection Instruments - Rocking Type VAInspection Instruments with Face Stop VPInspection Instruments with Guiding Profile VMAutomated FAPP Systems VMFCircumferential Backlash Measuring Instruments VDSpecial measuring instruments VY

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Rotation Measuring Systems URM Instruments with Measuring Balls URM-KURM Instruments with Measuring Wheels URM-RSingle Flank Gear Rolling Inspection EWPDouble Flank Gear Rolling Inspection ZWPRoll Scanning Instruments WS

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Gear Inspection in the FRENCO Measurement Laboratory Gear Inspection with Deviation Analysis PA

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Know-How Transfer Gear and Spline Software KPGear and Spline Seminars KSGear and Spline Documentations KDEducational Spline Game KE

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Ultra - High Precision H 5Gear Artefacts, IC Gear ArtefactsSetting MastersSpline Gauges Master GearsProfiled Clamping SystemsGear Forming ToolsGear and Spline Manufacture

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Instruments for Size Inspection V 17VK Measuring Ball Inserts and Measuring PinsVA Inspection Instruments - Rocking TypeVP Inspection Instruments with Face StopVM Inspection Instruments with Guiding Profile

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Rotation Measuring Systems R 35 URM - K with measuring Balls and PinsURM - R with master wheelsEWP Single Flank Gear Rolling InspectionZWP Double flank Gear Rolling InspectionWS Roll Scan inspection

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Gear and Spline Inspection P 53DKD CalibrationMonitoring of Inspection EquipmentWorkpiece InspectionDeviation Analysis

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Know - How Transfer K 65SoftwareTraining, Seminars and Workshops Support and CalculationsLiterature and DocumentationEffity - Educational Spline Game

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Double Flank Gear Rolling Tester ZWP 06 (896)

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The double flank gear rolling tester ZWP 06 (former designation 896) has been designed for small specimens. It is also most suitable for plastic gears. The measuring force can be adjusted downwards to zero. The sophistica-ted design is extremely precise and sensitive, which is necessary for highly precise mea-surement of small items. You can’t go wrong with this instrument.

As the ZWP 06 is motor driven by default, the competitively priced drive unit FMC-Lite would be required as a minimum.

The wide range of accessories offers a solution for nearly all ap-plicational requirements.

Inspection of a plastic gear

Inspection of an internal gear

Highest precision andeasy to operate

Double Flank Gear Rolling Tester ZWP 14 (894)

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The ZWP 14 (former designation 894) is the most robust double flank gear rolling tester in this series and therefore especially suitable to be used on the shop floor.

It can either be operated manually or motor-driven. The centre distance can be adjusted by hand using an adapter plate.

The measuring results are displayed on a dial indicator or, when connected to a drive unit, the evaluation can take place using the MEG 32 electronic unit.

Individual solutions for all requirements are possible with our comprehensive range of accessories. Special customer-specific solu-tions can also be met.

Single end mounting

With steady centre attachment

Measurement of worm gears with adapter (accessory)

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Simple, robustfor shop-floor use

Standard measuring instrument

Double Flank Gear Rolling Tester ZWP 18 (898)

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Highest precision andeasy to operate

The high quality ZWP 18 (former designati-on 898) features a high-quality construction, which enables highly precise measurements to be taken.

The centre distance can be adjusted quickly and precisely by moving the measuring car-riage with a crank handle. The height of the specimen can be changed in a simple and easy manner via the adjustable shaft on the counter carriage. Various accessory items can be mounted.

The motor is already integrated in the instru-ment. The measuring slides are mounted on extremely smooth-running guides to enable highest precision.

Single end mounting of the workpiece with, master gear with steady centre attachment

Design of two steady centres

Worm and worm gear

Evaluation Options

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Dial indicator or dial test indicatorfor manual measurement and evaluation

Probe

analogue for external chart recorders

digital for FMC and FGI

Motor drive FMC

Evaluation unit FGI-lite

consists of:

• MEG electronic measuring unit, basic• motor drive FMC• printer

The centre distance cannot be measured.

PC-Evaluation FGI-Pro

consists of:

• electronic measuring unit MEG 32• simple and effective handling• flexible configuration• measuring software Windows • data exchange via Ethernet• modular design with 19‘‘ plug-in cards• integrated PC

emergency stop

start / stop

time recording

pre-travel

operatingmode

CPU-card motor card

counter card printer

CPU-card motor card

counter card

PC

PC-Evaluation

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Various evaluation methods and dis-play options are available.

Polar coordinate graph within tolerance circles.

Composite errors and Reany graph below.

Main window

EWP Single Flank Gear RollingInspection conventional with Master Gear

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Single flank gear rolling inspec-tion used to be a technically complex method of inspection. Thanks to the incredibly fast advances in electronics, single flank inspection instruments have become significantly ea-sier to implement.

Simple solutions are possible for gears with bores. All right and left flanks can be inspected simultaneously, even including master gear error corrections.

EWP single end mounting

Graphical on-screen evaluation of the rolling inspection

EWP for internal gearing

Roll scan

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The roll scan method is ba-sed on the single flank gear rolling inspection. Due to the special design of the roll master, a contact ratio < 1 is achieved. Thus, a drive path is generated between each rolling process. This drive path enables a separation of the tooth flanks.

Measurements are taken during the rolling process. The drive path is only nee-ded to get to the next tooth flank and is not important for the measurement itself. After one rotation tooth 1 of the roll master measures tooth 2 of the specimen to ensure that all teeth, which were skipped during the first rotation, are measured.Several rotations ensure that all teeth of the specimen are measured.

Single flankrolling inspection

contact ratio > 1roll inspection

contact ratio < 1roll scan

conventional withmaster gear

withroll scan master

Roll scaninstrument WSG

Roll scanmachine WSM

hedgehogroll master

hedgehogroll master

discroll master

Only the inspection areas of the gradient will be evaluated

driving inspecting driving

transportation rolling transportation

complete measuring results

angle of rotation

angle of rotation

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Roll Scan Instrument WSG

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Roll scan measuring instru-ments are always set up to suit the relevant specimen. They are single purpose measuring instruments for one single specimen. A con-version of the instrument to suit other specimens within the same series is possible, but has to be checked indivi-dually in each case. Hedge-hog roll masters are matched to the profile of the specimen and, similar to master gears, are only suitable for one type of specimen.

Hedgehog roll master

Roll Scan Machine WSM

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The disc roll scan uses a rela-tively simple roll master desi-gned like a disc. The roll scan disc master is made to suit the specimen. It takes two revolu-tions to measure the profile of the specimen in the set plane. The axes of rotation A (speci-men) and B (roll master) are electrically connected. Due to the simultaneous movements of axes Z1 and Z2, any number of measuring planes can be se-lected, which will be inspected one after the other.

The tip distance and the position of the profile to be inspected are noted in the inspection plan and automatically controlled during the cycle.

The X-axis represents the cen-tre distance and is also automa-tically set.

Measurements in 10 planes will take, depending on the spe-cimen, approximately four mi-nutes.

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Disc roll scanmaster

Z 2

Z 1

5 axes disc roll scan

A = axis of rotation, specimen

B = axis of rotation, roll scan master

Z1 = vertical travel, lower centre

Z2 = vertical travel, upper centre

X = center distance

Evaluation of Measuring Results

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Profile Helix angle Index, runout, s ize

S till todayit is

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randomizely

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G rade ofc ompletenes s

with the rolls c an method

conventional Tolany topographical evaluation

evaluation of all teeth false colour representation topological

Reany

Today it is still practise to

make random measurements

More complete measurements

are required

Coverrage with the roll scan method

Profile tooth trace pitch, runout, size

Inspection Services

Gear and Spline Inspectionto Accredited Standards

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General information

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FRENCO is the first address for gear and spline inspec-tion in Germany. Our equip-ment enables us to measure nearly all types of gears and splines. A constant room temperature, best quality equipment and top qualified specialists guarantee high-est precision. The traceability to PTB (Physikalisch-Tech-nische Bundesanstalt - the national metrology institute of Germany) verified artef-acts, from measuring pins to profile, tooth trace and pitch artefacts, ensures reliable measurement results. The FRENCO calibration labora-tory is DKD accredited (DKD-K-27401). FRENCO is the only calibra-tion laboratory worldwide, which is authorised to com-pletely calibrate gears and issue DKD-certificates.

Size P os itionF orm

diameter

tooth

runout

coaxiality

perpendicularity

profile

index

helix

F unc tion

area of c ontactl

nois e

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form

minor

runout tooth pos ition

Quality featuresof gears and s plines

synchronity

nic k

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area of contact

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The Range of Services

Monitoring of inspection equipment Page 57

Workpiece inspection Page 58

Online inspection certificates Page 59

DKD-calibration Page 60

UPM -certificate Page 62

Deviation analysis Page 63

Calibration laboratory manager Jan Kühl 09187/ 9522-34 jk@frenco.deDeputy manager Werner Schiller 09187/ 9522-35 ws@frenco.deSales / quotations Heinz Hasenkopf 09187/ 9522-11 hh@frenco.de Ursula Chwalka 09187/ 9522-30 uc@frenco.de

Monitoring of Inspection Equipment

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Scope of services

All measuring and inspection equipment for external and internal gearing, such as gauges, master gears, taper mounting mandrels, instruments for size inspection and others are inspected. Standard monitoring of inspection equipment conforms to the directive VDI 2618 sheet 1 and includes the following services:

• Verification of the number of items delivered • Cleaning • Demagnetisation • Visual inspection for damage • Determination of the gear and spline data by means of standards and existing drawings, or • Creation of an inspection equipment drawing (additional charge) • Removal of smaller damage on the gearing, wherever possible • Size inspection of the gearing by hand with the Abbe length measuring device or the length comparator • Form inspection such as profile, tooth trace, pitch and radial runout on gear measuring centres • Issuing of an inspection certificate • Electronic archiving of the measuring results at FRENCO Providing the measuring results on an online inspection certificate to be retrieved from www.frenco.de • Re-marking (additional charge) • Packing in a rust protective foil

Note: If any size is out of tolerance, the measurement procedure will be ended and costs are reduced, according to the actual work having taken place in the calibration laboratory.

Delivery timeDelivery is approx. 2 weeks from receipt of inspection equipment or measurement items. Delivery may be expedited if agreed with the aforementioned FRENCO contacts (at extra costs). Delivery for DKD calibra-tions is 10 weeks from receipt.

DocumentationAn inspection certificate is issued for each inspected object. This includes: • Inspection equipment data, nominal sizes, actual sizes and the overall evaluation on the first page. • Depending on the delivery volume and type of instrument, the graph of the gear inspection centre including profile and tooth trace, pitch and radial runout on the inside pages. • Explanation of the used abbreviations, traceability and measurement uncertainties on the backpage.

DeliveryWe kindly ask you to send the measuring instruments to us free of charge and to ensure that the goods are packed properly in order to avoid any damage. Goods will be returned ex works via parcel service. Please inform us, if required, of your preferred carrier.

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Workpiece Inspection

Gearing of workpieces can be inspected in a number of ways: • individual form inspection on gear measuring machines (profile, tooth trace, pitch, runout) • double flank gear rolling inspection on a FRENCO double flank gear rolling tester. A master gear and clamping equipment is required.

Individual form inspection can be carried out on external and internal gears as well as involute, serration and straight-sided splines. We can inspect the following workpieces:

• Max. diameter of the work pieces: 360mm (worm gears 260mm) • Max. length of work pieces: 600mm • Max. vertical measuring range: 400mm • Min. module: 0.3 (0.2 external gears)

Additional possible measurements: • Position of functional faces (circles, cylinders, plane faces etc.) in reference to the gear/spline axis • Topography of individual teeth, by measuring multiple profiles per tooth • Roughness and contour measurements

Online Inspection Certificate

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The inspection certificates for inspection equipment and workpieces calibrated by FRENCO, can be downloaded in PDF format from our website. A detailed description can be found on www.frenco.de.

Note:Before destroying the paper certificate, please save the record ID and order number. Without these the online certificate cannot be retrieved.

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DKD Calibration of Artefacts

The calibration laboratory of FRENCO GmbH is accredited by the DKD (the German calibration service) according to DIN/ISO 17025 for the calibration of all essential gear and spline features (DKD-K-27401). This means, not only tooth trace and involute artefacts can be DKD calibra-ted but also pitch artefacts and gears with pitch, runout and dimension over measuring circle.

This accreditation is valid for certain measurement ranges, which are re-quired most frequently. For detailed information on the accreditation scope, please visit www.dkd.eu.

Artefacts outside this range can be works calibrated.

You will receive a (DKD) calibration certificate containing explanations about the measuring method, specifi-cations to determine the position of the measured item and specification of the measuring uncertainties. Traceability

... and IC Artefacts

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The smallest measuring uncertainty to be specified depends on the size of the artefact. Measuring uncertainty of DKD calibrations lies within the following range:

U (k=2) U (k=2) U (k=2)

Profile Fα: 1.4 - 2.0 µm fhα: 1.0 - 1.8 µm ffα: 1.0 µm

Tooth trace Fβ: 1.7 - 2.3 µm fhβ: 1.4 - 2.0 µm ffβ: 1.0 µm

Pitch/ runout Fp: 1.1 µm fp: 0.9 µm Fr: 1.1 µm

Size over measuring circles

DOB: 1.5 – 1.9 µm

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UPM – Certificate for Series V Measuring Instruments

On request FRENCO issues a uPM - certificate for all Series V measuring instruments (size inspection, see back page). This certificate is designed according to VDA 5 and contains the measuring uncertainty of the measuring instrument. It enables an easier determination of the measuring uncertainty of the inspection method in accordance with VDA 5, as the measuring uncertainty of the inspection instrument only has to be inserted. Moreover, parame-ters such as Tmin, Cgk and Cg, which are also indicators for the gauge capability of an instrument, are also listed on the certificate.

Uncertainty of inspection equipment uPM according to VDA 5

UKal

UW

USys

UInd

resulting from 25 repeat measurements

Upm

Deviation Analysis

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The results from gear measurements taken on-site are digitally filed and can be used in a gear and spline analysis program.

This program can be used to:

• change the axis position, • overlay multiple measuring results for comparison, • select representations depending on the tooth thickness, • correct machine settings (profile grinding), • detect disturbances in the production process, • simulate changes of the gear and spline data, • generate new gear and spline data.

This analysis program helps to understand correlations, find reasons for and detect sources of faults. Moreover, it features the ability to change parameters quickly and in-teractively, as well as many different ways of representation. The most important feature is, however, that the data output will be given in a way familiar to the user, as a measuring result.

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Goal-oriented and of practical benefit forthe user

Know-How Transfer- Up-To-Date Knowledge

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The Programme

It is extremely difficult to ma-ster all available knowledge on splines and gears. Even specia-lists tend to only cover certain areas. By concentrating strictly on gear and spline manufactu-ring metrology for more than 25 years, FRENCO has attained unique knowledge through a wealth of experience. Ongoing developments and intensive engagement in standardisation increases this knowledge conti-nuously. We transfer knowledge wherever possible.

Know-how Transfer

Software

Training

Support +calculation

Documentation

Calculator Software

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The CALCULATOR Software is used to calculate inspec-tion parameters for involute gears, involute splines and serration splines.

A detailed software description can be found in the KP brochure for (Frenco software)

Graphical representation Selection of measuring circle

Flat and fillet roots Coordinate points for involutes

This includes amongst others:

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Spline Standards Software

The Spline Standards soft-ware calculates the tooth data for splines with involu-te flanks either absolutely or according to the following standardsDIN 5480SAE B92.1ISO 4156

Detailed software description can be found in the KP bro-chure for (Frenco software)

Tolerance details Complete calculation of data

Tolerance chart Graphical representation

This includes amongst others:

FRENCO offers different training courses in the field of gearing. They take place on predefined days in cooperation with the TAW (Technical Academy Wuppertal e.V.) and on their premises.

It is also possible to conduct certain training courses at the customer’s premises.

Training

customer`s premises

gears basics

individual employee training classes

supplementary work-shop in addition to

TAW course

at TAW

splines part 1

splines part 2

spline seminar

splines part 1

splines part 2

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Training

FRENCO offers various trai-ning courses on the subject of gears and splines in ger-man and english. They are organized in-house at FRENCO as scheduled. It is also possible to order ex-ternal training courses at a different location. In this case the subject areas are compi-led for the seminar according to therequirements.

The subjects included in the external seminars on splines can be compi-led according to requirement. The following subjects are available:

1. BasicsSubjects Time1.1 Geometry and system of fits 2.0 h1.2 Actual and effective spline tolerance limits 1.0 h1.3 Explanation of spline tolerances using wooden samples 1.0 h1.4 Representation of splines on workpiece drawings 0.5 h1.5 Helical splines 1.0 h

2. Inspection methodsSubjects Time2.1 Design example, without the use of standards 1.0 h2.2 Overview of quality features 0.5 h2.3 Spline inspection methods of actual size 1.5 h2.4 Spline inspection methods of effective size 0.5 h2.5 Inspection of individual deviations 1.0 h2.6 Inspection of positional deviation 1.0 h

3. Inspection systemsSubjects Time3.1 Process capability 1.0 h3.2 Spline gauge technology 1.0 h3.3 Indicating axial inspection systems 1.0 h3.4 Measurement systems for circumferential backlash 0.5 h3.5 Measurement systems for universal rotation equipment 1.0 h3.6 Profiled clamping systems 1.0 h

4. StandardsSubjects Time4.1 Significance of standards 0.5 h4.2 Spline standards, general overview 0.5 h4.3 German spline standard DIN 5480 1.5 h4.4 German spline standard DIN 5482 0.5 h4.5 USA spline standard ANSI B 92.1 1.0 h4.6 International standard ISO 4156 1.0 h

The following subjects are available for compilation for external semi-nars on gears: Different spline types The involute flank profile Topological flank corrections Machining process steps Rolling behavior Standardised gearing Quality features Inspection of the actual size Rolling inspection Inspection of individual deviations Inspection of positional deviation

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Support

Frenco’s specialists offer their help for a range of different problems.

Creation and revision ofgear and spline standards

Evaluations

Tolerancing of drawingsInspection plans

Measurement uncertainties

Solving measuring tasks withspecific problems

Research into basic principlesResearch assignmentsPractical implementation of ideas

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Calculation

Profile modifications for shrinking and forming processes ISO data formats for NC machinesDFX -files

Ca = Profile modifications

Gear design

3D gear design

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Documentaions

vol. 1 Splines

Quality Assurance

154 pages € 115,50.-

1. Spline basics (formerly OFL 01)2. Quality assurance of splines overview (formerly OFS 10)3. Inspection of splines with measuring machines (formerly OFD 13)4. Quality management (formerly OFS 01)5. Actual and effective inspection methods (formerly OFS 04)6. Actual and effective inspection instruments (formerly OFS 05)7. Effective fit clearance (formerly OFS 03)8. Tolerance limits of the effective fit clearance (formerly OFS 18)9. Master plug gauges for go ring gauges (formerly OFD 03)10. Helical Splines (formerly OFS 14)

vol. 2 SplinesThe Position of the Spline Axis106 pages € 79,50.-

1. Positional Tolerances (formerly OFD 01 and OFS 06)2. Profided clamping systems (formerly HWS-T)3. Angular position variation (formerly OFD 04)

vol. 3 SplinesStandards and Calculation122 pages € 91,50.-

1. List of standards (formerly OFS 24)2. Summary of spline standards (formerly OFS 13)3. Description of the most important standards (formerly OFL 03)4. Spline design without the use of standards (formerly OFL 02)5. Mathematical calculation formulae (formerly OFL 06)

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vol. 4 GearsQuality Assurance

178 pages € 134.-

1. Gear Pair 2. Deviations and tolerances 3. The involute 4. History of gear metrology 5. Quality inspection 6. Inspection of individual deviations 7. Deviation analysis 8. Different measurement methods – different results

Frenco books

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ref SUBJECT TITLE pages version priceOFL 01 Involute splines Spline basics

also in Frenco book vol. 120 08/05

colour15,-

OFL 02 Splines Spline design without the use of standardsalso in FRENCO Book vol. 3

28 06/96 colour

20.-

OFL 03* Splines StandardsDescription of the most important standardsalso in Frenco book vol. 3

70 18,-

OFL 04* Gears and Splines

Gears and splinesnot available

OFL 05 Involute Splines Inspection rules for profiled inspection equipment 1. Gear and spline gauges

2. gear and spline ring gauges with taper mounting mandrel

3. Profiled setting masters4. Master gears5. Taper master plug gauges6. Profiled clamping systems7. Taper mounting mandrel8. Circumferential backlash measuring instruments9. Concentricity ring gauges

68 01/02colour

52,-

OFL 06 Gears and Splines

Mathematical Calculation Formulae (inspection dimensions)also in Frenco book vol. 3

12 02/02colour

9,-

OFL 07 Splines USA Standard ANSI B 92.1 - 1970Metric version, officially unavailable

154 1970 190,-

OFL 07-1 Splines USA Standard ANSI B 92.1Changes in 1996 edition

8 1997 -

OFL 08 Splines USA Standard ANSI B 92.2 M(conforms to old version of ISO 4156 - 1980)

254 1989 190.-

OFL Literature

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ref SUBJECT TITLE pages version priceOFL 11 Gears and

SplinesDictionary German-EnglishEnglish-German

52 02/04 13.-

OFL 12 Gears and Splines

Dictionary German-English-Italian

28 10/02 7.-

OFL 13 Involute Serrations

JIS B 1602 - 1961Japanese Standardin English

22 1961 120.-

OFL 14 Involute Splines

JIS D 2001 – 1959Japanese Standardin English

40 1959 250.-

OFL 15* Gear and Spline Metrology

FRENCO-pediaEncyclopaedia of gear and spline metrology

16 2004 8.-

OFL 16* Splines Reference book for Seminars/Training courses 230 2004colour

150,-

OFL 17 Splines EffityPractical game to learn about actual and effective tolerances10 sample parts, 6 measuring instruments and coloured instructions

of 36 pages. Supplied in a case.

6.

1 2 3 4 5

7 8 9. 10

2005colour

450.-

OFL 17-1 Splines Effity, seperate instructions 36 2005 45.-

OFL Literature

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OFS Scripts

ref SUBJECT TITLE pages version priceOFS 01 Splines Control of manufacturing process

Also in Frenco Book vol 128 20.-

OFS 02* Cylindrical gear History of gear metrologyMeasuring machines and traceability

OFS 03 Splines Effective fit clearanceAlso in Frenco Book vol. 1

12 9.-

OFS 04 Splines Actual and effective inspection methodsAlso in Frenco Book vol. 1

16 12.-

OFS 05 Splines Actual and effective inspection instrumentsAlso in Frenco Book vol. 1

16 12.-

OFS 06 Inspection Methods of determining the agear and spline axisAlso in Frenco Book vol. 2

20 04/99 15,-

OFS 09* Gears Gear rolling inspection 16 03/97 8.-

OFS 10 Gears and splines

Overview of Quality FeaturesAlso in Frenco Book vol. 1

4 2.-

OFS 11 Gears and splines

Inspection of individual deviations 60 02/02 30,-

OFS 12 Gears and splines

Deviation analysis 20 05/00colour

5.-10.-

OFS 13 Splines Summary of spline standardsAlso in Frenco Book vol. 3

OFS 14 Splines Helical splinesAlso in Frenco Book vol. 1

OFS 15 Gears and splines

Various types of gears and splines 8 07/00 4.-

OFS 17* Gears and splines

The involute (simple explanation) 20 04/00 10.-

OFS 18 Splines Tolerance limit - Effective circumferental backlashAlso in Frenco Book vol. 1

10.-

OFS 19* Gears Mating gears: rolling behavior, speed, centre distance, profile shift

12 04/00 6.-

OFS 20* Gears Deviation of size, tolerances, ranges of quality

8 04/00 4.-

OFS 23* Gears and splines

Production methodsExcerpt from OFL 04, b/w

20 01/06 5,-b/w

OFS 24* Splines List of standardsAlso in Frenco Book vol. 3

OFS 25* Splines The position of the spline axisNow part in Frenco Book vol. 3

80 May2005

40.-

OFS 26* Splines Quality assurance of splinesAlso in Frenco Book vol. 1

15.-

OFS 27* Master Gears Engineering and Designs(will be DIN 3970) In view of modern technologies

20 11/04 15.-

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OFD Definitions

ref SUBJECT TITLE pages version priceOFD 01 Splines Positional tolerances

Also in Frenco Book vol. 232 01/97

colour24.-

OFD 03 Splines Master plug gauges for go ring gaugesAlso in Frenco Book vol. 1

12 04/94colour

9.-

OFD 04 Splines Angular position variation of a spline connectionAlso in Frenco Book vol. 2

16 02/98colour

12.-

OFD 10 High precision gears and splines

Acceptance or rejection of gauges and masters with regard to the tolerance limits of size and form variations

24 05/02colour

6.-12.-

OFD 11 Tolerance limits Explanation on ISO 14253 Acceptance or rejection of specimen with regard to tolerance limits (ISO 14253)

12 05/02colour

3.-6.-

OFD 12* The size of tooth thickness

Different measurement methods - different resultsAlso in Frenco Book Volume 4

24 11/00 9.-

OFD 13 Splines Inspection of splines with measuring machinesAlso in Frenco Book vol. 1

The prices are net prices in EUR, ex works.

* These documents have not yet been translated into English. If ordered they will not be delivered immediately due to the need for these to be translated.