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WO1986001885A1 - Procede et dispositif pour mesurer une piece - Google Patents

Procede et dispositif pour mesurer une piece Download PDF

Info

Publication number
WO1986001885A1
WO1986001885A1 PCT/CH1985/000107 CH8500107W WO8601885A1 WO 1986001885 A1 WO1986001885 A1 WO 1986001885A1 CH 8500107 W CH8500107 W CH 8500107W WO 8601885 A1 WO8601885 A1 WO 8601885A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
workpiece
measured
sensor
carrier
Prior art date
Application number
PCT/CH1985/000107
Other languages
German (de)
English (en)
Inventor
Gerhard Staufert
Original Assignee
Gerhard Staufert
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gerhard Staufert filed Critical Gerhard Staufert
Publication of WO1986001885A1 publication Critical patent/WO1986001885A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
    • G01B5/207—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters

Definitions

  • the invention relates to a method for measuring a workpiece according to the preamble of claim 1 and a device for carrying out the method according to the preamble of claim 5.
  • the multi-position measuring devices known today - which allow the actual workpiece geometry to be recorded relative to a setting masterpiece - enable the simultaneous recording of numerous measuring points and the mathematical linking of the measured values to so-called measuring functions the extremely fast control of complex workpieces.
  • the measuring sensors used generally have a high measuring resolution (0.0001 mm) with a short measuring path (- 1 mm) and offer a very favorable price-performance ratio. This makes it possible to use a multi-point measuring device optimize the use of the optimal number of sensors also in the price. Since the transducers and the devices used are very robust, such devices can be used to achieve high-precision measurements, even in the normally unfavorable environmental conditions in the immediate vicinity of the production machines.
  • kits are also known with which such measuring devices can be constructed from individual elements. However, this structure is also time-consuming. This means that such devices can only be used in large series and that their integration into automated production systems is difficult.
  • 3-coordinate measuring devices are known. These devices are characterized in that a measuring sensor can be moved in 3 coordinate directions to any location on the workpiece to be measured. The measurements are carried out relative to the axis-specific measuring rulers, ie absolutely with regard to the workpiece to be tested. In principle, any number of measuring points can be measured and processed in any position.
  • measuring devices are precision devices that only achieve their full accuracy in air-conditioned rooms with cleaned air. If, nevertheless, they are to be used directly integrated in the production, they have to they are specially encapsulated - which makes the devices, which are not cheap, even more expensive - or you have to be satisfied with low measuring accuracy.
  • the object of the invention is to combine the advantages of the two measurement methods mentioned without having to accept their disadvantages. Accordingly, it should be made possible to quickly detect large dimensional differences with inexpensive sensors despite their greatly restricted measuring range and, moreover, to allow a quick changeover to a new workpiece.
  • This object is achieved with the characterizing features of claims 1 " and 6.
  • the workpiece to be measured is therefore not measured directly, but with the sensor using a transmitter.
  • the transmitters are expediently slidable rods along their axis. Taken together, the rear ends of these rods form a reference line or a reference surface with respect to a masterpiece. If a workpiece to be measured is then inserted into the measuring device, there are deviations from the reference line or surface at the rear rod ends, which exactly reflect the workpiece errors.
  • the number of sensors corresponds at least to the number of transmitters, all measuring points can be measured simultaneously. This results in short cycle times as with the known multi-position measuring devices.
  • the measuring points can be scanned considerably faster than with the 3-coordinate measuring method.
  • the transmitters can be made very small in at least one dimension, so that measuring points can be taken over in a correspondingly dense sequence. Since the entire structure can be made very robust in spite of the small dimensions and since the measuring results can be approximately independent of temperature and air pollution with simple means, such a device is best suited for the workshop environment.
  • the transmission linkages can be designed on their surfaces facing the measuring sensors in such a way that the selected measuring method gives the best possible results. For example, it is possible to make these surfaces reflective in order to be able to use optical measuring methods in an optimal manner, which often cannot be used in conventional multi-point measuring methods due to unfavorable workpiece properties or surfaces.
  • the transmission linkages for a specific workpiece geometry can be put together to form a magazine tool. If the basic device is then built in such a way that different transmission linkage tools and a wide variety of workpieces can be exchanged automatically, a very short changeover time can be achieved by means of a corresponding tool changer and thus the ability to integrate such a system into flexible production systems with a rapidly changing workpiece sequence and possible with short cycle times.
  • Fig. 3 shows a carrier in the floor plan.
  • FIGS. 1 and 2 The invention is illustrated in FIGS. 1 and 2 with reference to the measurement of a rotating body 2.
  • Four measuring points are provided, namely three diameter measurements and one length measurement.
  • the position of the measuring points is determined by a transmission linkage 8 on a measuring sensor 4 transfer.
  • the transmission linkages are three in one.
  • Carrier 10 axially displaceably mounted rods 8a-c and a two-armed lever 8d which is pivotably mounted in the carrier 10 on a pin 16.
  • a transducer 4a-d is assigned to each transmission linkage 8a-d.
  • the sensors 4a-c are permanently installed in a holder 6. Your probes 12 are in the neutral position of the transducers 4a-c in a straight line. The four measured values can be recorded here simultaneously.
  • a single measuring transducer 4 is mounted on a rod 18 which can be displaced longitudinally in bearings 6 *.
  • the measured values are sampled one after the other, and in addition to the probe 12, another probe 14 determines the position of the measuring sensor 4 relative to a measuring ruler 20 in order to compensate for inaccuracies and play in the rod 18.
  • Both embodiments can be calibrated by measuring an adjustment masterpiece before measuring the workpiece 2. If the position of the probe 12 relative to the axis of symmetry 3 of the workpiece 2 in the neutral position the measuring sensor 4 is exactly known, however, the measurement of the length of the transmission rods 8a-c is also sufficient to correct the measured values determined with the measuring sensors 4.
  • the carrier 10 is assembled from a carrier element 10a-d per transmission linkage 8a-d and intermediate pieces 11a-c.
  • the measurement of an axial section of a rotating body ie the measurement in one plane
  • the spatial measurement of a workpiece can be reduced in an analogous manner to the measurement of deviations from one plane, in one embodiment analogous to FIG. using a cross slide.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

Des capteurs (4) présentant une petite course de mesure sont montés fixes sur un support (6). La position des points de mesure d'une pièce (2) est transférée aux capteurs par l'intermédiaire de tiges de transfert (8). Celles-ci sont guidées dans un support interchangeable (10). Pour une nouvelle mise en train d'une autre pièce, le support (10) est échangé avec les tiges de transfert (8). Ainsi, on peut obtenir de courts temps de mise en train pour une cadence élevée de mesure si bien que le procédé de mesure convient à des systèmes flexibles de fabrication. Au lieu de prévoir un capteur pour chaque tige de transfert, il est également possible de déplacer un seul capteur le long d'une ligne et de transférer l'une après l'autre les positions des points à mesurer à l'aide des tiges de transfert.
PCT/CH1985/000107 1984-09-21 1985-07-04 Procede et dispositif pour mesurer une piece WO1986001885A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH453984A CH664012A5 (de) 1984-09-21 1984-09-21 Verfahren und vorrichtung zum vermessen eines werkstueckes.
CH4539/84-1 1984-09-21

Publications (1)

Publication Number Publication Date
WO1986001885A1 true WO1986001885A1 (fr) 1986-03-27

Family

ID=4277973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1985/000107 WO1986001885A1 (fr) 1984-09-21 1985-07-04 Procede et dispositif pour mesurer une piece

Country Status (3)

Country Link
EP (1) EP0196304A1 (fr)
CH (1) CH664012A5 (fr)
WO (1) WO1986001885A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607243A1 (fr) * 1986-11-24 1988-05-27 Usinor Aciers Dispositif de detection d'anomalies de forme et/ou de dimension d'objets en circulation
EP0337058A1 (fr) * 1988-03-15 1989-10-18 Rheinmetall GmbH Dispositif de contrôle des dimensions radiales des pièces à usiner
EP0424268A1 (fr) * 1989-10-20 1991-04-24 Renault Automation Procédé et dispositif de contrôle du montage des demi-cônes sur la queue de soupape
US5088206A (en) * 1988-04-26 1992-02-18 Marposs Societa' Per Azioni Apparatus and method for checking mechanical parts
WO2016079997A1 (fr) * 2014-11-20 2016-05-26 Neturen Co., Ltd. Appareil et procédé d'agrandissement de diamètre d'arbre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364534A (en) * 1918-11-14 1921-01-04 Frank L Walter Gage
US3257730A (en) * 1963-12-20 1966-06-28 Muirhead & Co Ltd Measuring devices
CH496231A (fr) * 1966-09-16 1970-09-15 Charpilloz David Tête palpeuse pour le contrôle de différentes cotes des pièces d'une série
DE2034394A1 (de) * 1969-07-12 1971-01-28 Temco Tools Ltd . Worthing, Sussex (Großbritannien) Verfahren und Vorrichtung zur Unter suchung eines Profils emes Gegenstandes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364534A (en) * 1918-11-14 1921-01-04 Frank L Walter Gage
US3257730A (en) * 1963-12-20 1966-06-28 Muirhead & Co Ltd Measuring devices
CH496231A (fr) * 1966-09-16 1970-09-15 Charpilloz David Tête palpeuse pour le contrôle de différentes cotes des pièces d'une série
DE2034394A1 (de) * 1969-07-12 1971-01-28 Temco Tools Ltd . Worthing, Sussex (Großbritannien) Verfahren und Vorrichtung zur Unter suchung eines Profils emes Gegenstandes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607243A1 (fr) * 1986-11-24 1988-05-27 Usinor Aciers Dispositif de detection d'anomalies de forme et/ou de dimension d'objets en circulation
EP0337058A1 (fr) * 1988-03-15 1989-10-18 Rheinmetall GmbH Dispositif de contrôle des dimensions radiales des pièces à usiner
US5088206A (en) * 1988-04-26 1992-02-18 Marposs Societa' Per Azioni Apparatus and method for checking mechanical parts
EP0424268A1 (fr) * 1989-10-20 1991-04-24 Renault Automation Procédé et dispositif de contrôle du montage des demi-cônes sur la queue de soupape
FR2653550A1 (fr) * 1989-10-20 1991-04-26 Renault Automation Procede et dispositif pour le controle du montage de demi-cones sur la queue de soupape.
WO2016079997A1 (fr) * 2014-11-20 2016-05-26 Neturen Co., Ltd. Appareil et procédé d'agrandissement de diamètre d'arbre
JP2016097423A (ja) * 2014-11-20 2016-05-30 高周波熱錬株式会社 軸肥大加工機及び軸肥大加工方法
CN107000029A (zh) * 2014-11-20 2017-08-01 高周波热錬株式会社 轴径增大装置和轴径增大方法
CN107000029B (zh) * 2014-11-20 2019-12-10 高周波热錬株式会社 轴径增大装置和轴径增大方法

Also Published As

Publication number Publication date
CH664012A5 (de) 1988-01-29
EP0196304A1 (fr) 1986-10-08

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