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Renishaw Styli


Measuring machines made in Germany by THOME Präzision



Connection thread Styli
Renishaw Stylus Types
Renishaw stylus materials
Renishaw probe ball materials


Renishaw connection thread Styli

Renishaw inserts with M2 thread

Renishaw inserts with M2 thread

Various threads of Renishaw probes

Various threads of Renishaw probes

Various styli from Renishaw

Various styli from Renishaw

Stylus selection

THOME Präzision relies exclusively on the high quality of Renishaw's styli. Renishaw measuring systems offer outstanding measuring performance using styli from the extensive Renishaw range. The choice of stylus is always based first on the thread of the probe on your CMM - typically M2, M3, or M5. The use of styli is highly flexible thanks to the thread adapters. For example, M2 and M3 styli can be connected with M5 connection threads.


Styli with M2 thread

The following probes all use M2 threads, but with a suitable thread adapter, styli with other thread sizes can also be used.

  • Renishaw TP20 probes
  • Renishaw TP200 probes
  • Renishaw probe head Revo

  • Styli with M3 thread

    The following probes all use M3 threads, but with a suitable thread adapter, styli with other thread sizes can also be used.

  • Renishaw TP6 probe heads
  • Renishaw SP25 probe
  • Renishaw Revo probe head

  • Styli with M5 thread

    The following probes all use M5 threads, but with a suitable thread adapter, styli with other thread sizes can also be used

  • Renishaw SP80 probe

  • Styli from Renishaw in the store Shop Messmaschienen THOME Präzision




    Renishaw stylus types

    Renishaw straight styli

    Renishaw straight styli

    Renishaw star stylus

    Renishaw star stylus

    Renishaw star probe measures a casting

    Renishaw star probe measures a casting

    Renishaw disc stylus measures a casting

    Renishaw disc stylus measures a casting

    Renishaw cylindrical stylus

    Renishaw cylindrical stylus

    Renishaw hemispherical stylus measures a casting

    Renishaw hemispherical stylus measures a casting

    Straight styli

    Straight styli are the simplest and most commonly used stylus types. Both stepped and tapered shanks are available. Styli with tapered shanks offer better stability for easily accessible workpieces.

    Main application

    Simple features that can be approached directly.

    Interesting to know

    The styli should be as short as possible to avoid bending. This applies in particular to tactile touch trigger probe systems. The traverse direction of the measurement should be as parallel as possible to the coordinate axes and perpendicular to the surface of the workpiece. A wide range of accessories, e.g. for the measurement of inclined bores, is available for the alignment of the probes.


    Star-shaped styli

    Stylus configurations with multiple fixed styli. Custom star configurations can be designed with holders that hold up to stylus components.

    Main application

    For surfaces and holes that can be approached directly. This configuration offers flexibility by allowing probing of different features without changing the stylus.


    Disc-shaped styli

    These styli are "sections" of high-precision balls, which are available in various diameters and thicknesses. Made of steel, ceramic or ruby, the discs are attached to a threaded pin. The advantages of these styli are that they can be fully rotated and that a centrally positioned stylus can also be inserted. These styli are therefore particularly flexible and easy to use.

    Main application

    These styli are used to measure recesses and grooves in bores that may be inaccessible to star-shaped styli. Measuring with the stylus disk is equivalent to measuring at or around the center of a large stylus ball. However, only a small section of the ball surface is available for contact. Therefore, thin disks require angular alignment to ensure correct contact of the disk surface with the feature to be measured.

    Interesting to know

    A simple disc can only be calibrated for one diameter. However, measurements are limited to the X-Y plane. If a hemisphere is additionally used on both sides of the disc, the stylus can also be calibrated and used in the Z-direction. The hemispheres can be calibrated using a gauge block. By rotating the disk around the center axis and blocking it in a certain position, the hemispheres can be brought into the correct position for the respective application situation.


    Cylindrical styli

    Cylindrical styli are made of carbide, ruby or ceramic.

    Main application

    For measuring metal sheets, pressed parts and thin workpieces where good contact with spherical styli cannot be guaranteed. In addition, various thread features can be measured and the centers of threaded holes can be determined. Cylindrical inserts with spherical ends allow calibration and measurement in the X, Y and Z planes and are therefore suitable for surface measurement.


    Ceramic hemispherical styli

    Their advantage is the large, effective ball diameter with minimal mass.

    Main application

    For measuring deep features and bores. Also suitable for probes on rough surfaces, as the roughness is mechanically filtered out by the large diameter area.








    Materials of Renishaw stylus components

    Renishaw stylus holders

    Renishaw stylus holders

    Renishaw stylus shafts

    Renishaw stylus shafts

    Stylus shaft materials

    Stylus shaft materials

    Measurement errors due to temperature fluctuations

    If your CMM is operated in an air-conditioned room, at a constant temperature of 20°C, measurement errors will not normally occur. Otherwise, temperature fluctuations cause considerable thermal expansion and length changes of the probe component. This can lead to measurement errors if no compensation is made. Such errors can be minimized by the correct choice of stem or holder material.


    Holder

    The shaft of the stylus holder is attached to a threaded holder. Steel and titanium are the ideal materials for holders. Titanium is much lighter than steel and should be used when assemblies with a low mass are required.


    Shaft

    The shaft must have maximum stiffness to minimize deflection during measurement.


    Carbide

    Offers exceptional stiffness, especially for small stem diameters and stepped probes. For large stem diameters and long styli, attention must be paid to mass. Ideal for most standard applications.

    Ceramics

    Ceramic is mainly used for long styli due to its low mass. It is thermally stable for production-related applications. It can also be used as a predetermined breaking point in machine tool applications.

    Steel

    For styli with excellent stability in standard applications where mass is not important.

    Carbon fiber (thermally stable)

    Also suitable for long styli, as carbon fiber inserts have only about 20% of the mass of carbide inserts. The thermal stability offers enormous advantages, especially for very long styli. For this reason, carbon fiber can also be used in production environments.







    Renishaw stylus ball material

    Renishaw zirconia stylus balls

    Renishaw zirconia stylus ball

    Renishaw's silicon nitride stylus stylus ball

    Renishaw's silicon nitride stylus stylus ball

    Renishaw ruby stylus ball

    Renishaw ruby stylus ball

    The choice of the ball material depends on the measuring strategy and the workpiece material. The quality rating of the ball must be taken into account - Renishaw uses only the highest grade balls, grades 3 to 5.


    Ruby

    After diamond, ruby is one of the hardest known materials and therefore an ideal ball material for most standard applications.


    Silicon Nitride

    Silicon nitride is very similar to ruby in terms of its technical properties. It is a ceramic material with exceptional wear resistance, which can be formed into a perfect sphere and whose surface can be polished extremely smooth. Silicon nitride is not attracted to aluminum. For this reason, the material is ideally suited for scanning aluminum surfaces, since, unlike ruby, the aluminum particles of the aluminum surface do not deposit on the sphere.


    Zirconium oxide

    The special surface of this material makes it ideal for scanning parts with abrasive surfaces, such as cast iron components.




    Video gallery of our measuring machines

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    Picture gallery of THOME Präzision CMM´s

    Renishaw probing systems in use at THOME Präzision CMM´s


    Renishaw probing systems in use with the manual CMM SMART













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    Trade fair Control in Stuttgart
    Trade fair Control Stuttgart
    Trade fair for quality assurance

    Visit us at Control in Stuttgart. We would be happy to send you free tickets!

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