Gear testing instruments VP with face stop Measurement of the dimension between or over two balls

VP E 11 2013

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Measuring with face stop

VP gear testing instruments feature a face stop. Finding the reversal point is no long-er required. Specimens with a usable end face are placed on the table of the instrument and measured at right-angles without reversal point. The measuring stilts of the VP instruments can be rotated and moved. They are uni-versally suitable for both internal and external profiles with small or large diam-eters. A setting plug or ring is needed for cali-bration. The spline or gear profile has to equal the specimen.

Features:

The measuring results are not reliant on the operator. The measuring results can be processed electronically. Measurements are always carried out at right-angles to the work-

piece axis. Different sizes, types and diameters of gears and splines can be

measured with one instrument. Measuring helical profiles is possible. Wear of the measuring inserts can be compensated for through

calibrations with a setting master. Measurement is possible in any number of planes (VPE only). The instruments can be connected to a computer.

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Product Overview

Type & Picture Pitch circle diameter

VPO

External gear up to 100 mm Internal gear up to 120 mm

VPE

External gear up to 200 mm Internal gear up to 220 mm

VPS

Gears and splines up to 350 mm

Measured value display

Analogue dial indi-cator

digital

Radial measuring

points

bzw.

Two opposite-lying for inside

and outside

bzw.

Multiples of two opposite-lying for inside and outside

Inspection process

manual

automatic

Go gauging without

integrated

Axial measuring

planes

static

dynamic

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Gear testing instrument VPO

The VPO is a simple gear testing ma-chine to determine the diametrical size over two balls in one specific measur-ing plane. It can be refitted within a few minutes and is particularly suitable for quick measurements of small pieces up to a PCD of 120 mm. The balls are mounted on a movable and a fixed carriage. To change the workpiece, the movable carriage can be retracted using the lever on the front. To display the measuring results both a dial indicator or a digital probe can be used.

Gear testing instrument VPO

Technical specifications External gears up to 100 mm PCD Internal gears up to 120 mm PCD Measuring force (continu-ously adjustable) up to 10 N

Dimensions (without stilts) 185x58x180 mm Weight approx. 3.3 kg

Measured value display

Radial measuring points Go gauging Axial measu-ring planes

Inspection process

oder

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Gear testing instrument VPE

The VPE is a gear testing machine to determine the diametrical size over two balls in any number of planes. It can be refitted within a few minutes and is mainly used for quick measurements of pieces with a PCD up to approx. 220 mm. Crowning and tapering can also be measured thanks to the height-adjustable plane. Connecting two probes, the measuring results can be record-ed on a PC and allows a dynamic analysis. Measuring device VPE

Technical specifications External gears up to 200 mm PCD Internal gears up to 220 mm PCD Vertical travel 30 mm Measuring force (continu-ously adjustable) up to 10 N

Dimensions (without stilts) 340x118x210 mm Weight approx. 11 kg

Measured value display

Radial measuring points Go gauging Axial measu-ring planes

Inspection process

oder

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Gear testing instrument VPS

The VPS machine is the latest develop-ment in this product line. It is the result of the consistent enhancement of the gear testing machines VPO/VPE. It is especially suitable for large and heavyworkpieces.

Besides precision and accuracy, im-portance was attached to functionality, appearance, a sophisticated design andoptimal ergonomics.

The VPS is easy in use and a very stable tabletop machine for the shop-floor use.

Like the gear testing machines VPO and VPE, it is used for size inspections ofinternal and external profiles both for helical and spur gearing. Size inspection of an external gear with the VPS

Technical specifications Size of mounting plate approx.: 250x500 mm Maximum outer diameter with stilt displacement approx.: 350 mm Maximum outer diameter without stilt displacement approx.: 180 mm Minimum outer diameter: unlimited Maximum inner diameter with stilt displacement approx.: 350 mm Maximum inner diameter without stilt displacement approx.: 200 mm Minimum inner diameter approx.: 55 mm Maximum vertical travel: 75 mm Maximum workpiece weight: 20 kg Maximum measurement error: ±3 μm Reproducibility: ±3 μm Weight approx.: 60 kg

Measured value display

Radial measuring points Go gauging Axial measu-ring planes

Inspection process

oder

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The VPS does no longer have a plane travel. For longitudinal dy-namic measurements it has two stilts that can be moved vertically (75 mm). The workpiece is sitting on a fixed steel plate. Both stilts have fixtures for measuring balls or rolls M2.5 or M4 and Ø3.5. Optionally it is possible to mount the workpiece for size inspections in a floating manner on air bear-ings. That ensures the double flank contact during the measurement, especially for heavy pieces.

The flexible carriage is equipped with a reading head, which can establish the position on the glass scale. The true measured size of the workpiece is calculat-ed from the value of the probe X1 and the value of the scale X2. That way it is possible to meas-ure workpieces of different sizes with only one setting master. A flexible setting master can also be used to calibrate various measuring ball sizes.

Vertical stilt movement

Air bearing

Upgrade kit X2 axis

Probe X1 Scale X2 (axis)

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The hinged front and rear panels provide an easy access for retro-

fitting and maintenance

Lever for the vertical movement of the stilts during the longitudinal dynamic measurement. By turning the lever clockwise the stilts can be fixed for static measurements

Buttons to set the upper and lower stops for longitudinal dynamic measurements

An easy change of workpieces: the stilts are retracted when the lever is being pulled. They are locked when the lever is turned anti-clockwise

Continuous adjustment for the measuring force for internal and

external measurements (turn clockwise → internal measurement,

turn anti-clockwise → external measurement)

Optional stops for the floating steel plate

Stilts can be adjusted to measure internal and external

gears and splines

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The Software L-Dyn

VPE and VPS instruments can be upgraded for dynamic measurements. The travel of the table or the measuring stilts is as-signed to one measurement reading and recorded. The workpiece can therefore be measured in several planes and the values evaluated on a PC.

The measurement enables the determina-tion of the dimension over balls and the evaluation of the following values:

tapering crowning roundness

Interfaces for your database and QS-Stat are available.

Furthermore, the data can be exported to Excel. It is therefore possible to evaluate several data sets. When a workpiece is measured before and after hardening, the quenching distor-tion can also be determined.

When a measurement is complete the values are marked in colour:

Green: Measured value within accepted tolerance

Yellow: Measured value within intervention limits

Red: Measured value outside accepted toler-ance

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Accessories

= optional = standard VPO VPE

VPS

Stilts 35 mm for measuring ball inserts M2.5 or M4 or for Mahr inserts

Stilts 60 mm for measuring ball inserts M2.5 or M4 or for Mahr inserts

Stilts 35 mm for measuring pin inserts

Stilts 60 mm for measuring ball inserts

Measuring ball inserts tungsten carbide available in 1 micron steps, with M2.5 (from Ø1-7 mm) or M4 thread (from Ø7 mm)

Measuring pin inserts, rocking and rotat-ing

Stop prisms for easier mounting of work-pieces

FRENCO dial indicator with eccentric zero point

Probe with “Heidenhain” display

Setting rings and plugs

Flexible setting rings and plugs

Upgrade to measurement software L-Dyn

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Accessories

= optional = standard

VPO

VPE

VPS

Flexible stilts 80 mm

Steel plate Ø250 with 3 air bearings, maintenance unit and button for com-pressed air

Stops for steel plate on air bearings

Upgrade kit X2 axis

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Rotation Measuring Systems URM ----------------------------------------- URM - K with Balls and Pins URM - R with Master Wheels EWP Single flank gear roll inspection ZWP Double flank gear roll inspection WS Gear roll scan

Gear & Spline Inspection ----------------------------------------------- DAkkS - Calibration Monitoring of Inspection Equipment Workpiece Inspections Analysis of Deviations

Know-how Transfer --------------------------------------------- Software Training, Seminars, Workshops Consulting and Calculations Literature and Documentations National and International Standards

Instruments for Size Inspection Series V ------------------------------------------ VRK Measuring Pins and Balls VA Gauges, Rocking Type VP Gauges with Face Stop VM Gauges, Gear & Spline Profiles VD Circumferential Backlash Measuring Instrument VS Customised solutions