Renishaw REVO probe head measures cast ingot!
Motorized rotary / swivel head from Renishaw with 7.5 ° pitch
Scanning probe SP25M measures with a star stylus!
Revolutionary 5-axis technology to increase the measurement throughput
The new 5-axis probe system from Renishaw
The new 5-axis probe system from Renishaw
REVO probe head measures a cylinder!
The SP25M scanning probe measures a casting
Renishaw inserts with M2 thread
Various threads of Renishaw probes
Various styli from Renishaw
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.
The following probes all use M2 threads, but with a suitable thread adapter, styli with other thread sizes can also be used.
The following probes all use M3 threads, but with a suitable thread adapter, styli with other thread sizes can also be used.
The following probes all use M5 threads, but with a suitable thread adapter, styli with other thread sizes can also be used
Renishaw straight styli
Renishaw star stylus
Renishaw star probe measures a casting
Renishaw disc stylus measures a casting
Renishaw cylindrical stylus
Renishaw hemispherical stylus measures a casting
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.
Simple features that can be approached directly.
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.
Stylus configurations with multiple fixed styli. Custom star configurations can be designed with holders that hold up to stylus components.
For surfaces and holes that can be approached directly. This configuration offers flexibility by allowing probing of different features without changing the stylus.
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.
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.
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 are made of carbide, ruby or ceramic.
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.
Their advantage is the large, effective ball diameter with minimal mass.
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.
Renishaw stylus holders
Renishaw stylus shafts
Stylus shaft materials
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.
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.
The shaft must have maximum stiffness to minimize deflection during measurement.
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.
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.
For styli with excellent stability in standard applications where mass is not important.
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 zirconia stylus ball
Renishaw's silicon nitride stylus 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.
After diamond, ruby is one of the hardest known materials and therefore an ideal ball material for most standard applications.
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.
The special surface of this material makes it ideal for scanning parts with abrasive surfaces, such as cast iron components.
