Renishaw Probe SP80
The Renishaw probe SP80 is a quill-mounted laser scanning probe providing class-leading scanning performance, as well as the most flexible use of long styli for maximum productivity. The SP80 mounts to standard vertical quills and can carry styli up to 500 mm long and 500 grams mass, including star configurations.
The Renishaw probe SP80 is a passive scanning probe that uses digital scales and reader heads of with 20 nm resolution. These provide exceptional scanning performance, even with long styli. Kinematic stylus changing with the SH80 allows for repeatable re-location of the cmm stylus, optimizes stylus arrangements for each feature, and overcomes the need for re qualification. The SH80 probe can be powered on and off without needing to be re-homed on power up.
Features and benefits
- Ultra-high accuracy scanning by using digital reader heads providing 0.02 m resolution
- Long cmm stylus arrangement capability, up to 500 mm and 500 g mass, unbalanced
- Rapid dynamic response as a result of the low suspended mass within the probe
- Repeatable stylus changing for fast, flexible part inspection
- Simple and robust design with no internal motors to generate heat or develop reliability issues
- An LED on the front face provides a visual signal of the probe's status
The SH80K detachable cmm stylus holder has a kinematic location ball that allows powering off /on the SP80 Renishaw probe without needing to rehome the probe providing that the SH80K is fitted before the power is switched off.
The stylus ball locates on a special kinematic screw that is fitted to the probe body.
The SH80K stylus holder is magnetically attached to the SP80 Renishaw probe body and achieves repeatable location using a set of kinematic contacts. It provides automatic stylus change capability and uses M5 styli. For additional flexibility, the stylus mount cube may be rotated by loosening a grub screw to allow you to position stylus arrangement to any rotational position.
Fast stylus changing for maximum productivity
The flexibility of stylus changing is a key part of Renishaw's probe design.
The SP80 utilizes the modular rack system (MRS) which is compatible with other scanning probe systems (SP25), as well as the ACR3 autochange rack. Multiple stylus changing ports for the SP80 (SCP80) can be attached to the MRS rail at any chosen location, depending on the space requirements for the stylus arrangements needed for your application.
The MRS rail can be mounted at varying heights to vertically accommodate 500 mm stylus length using additional legs with a larger diameter for enhanced rigidity.
SP80 is a PASSIVE sensor (as opposed to an ACTIVE type sensor)
SP80 features are:
- Simple, accurate and high-performance design
- Robustness and high resistance to collision damage
- Use of long, heavy, complex and rapidly interchangeable styli
- Long service life, reliability and low cost of ownership
SP80 is an ANALOG scanning probe:
- A probe that gives a continuous reading at any time while in contact with the part
- An integral part of the CMMs motion control system - giving real time response X, Y and Z outputs
- A probe whose output is proportional to its deflection
How our Metrology Equipment Works
Without doubt, SP80 Renishaw probe sets class leading standards of flexibility, performance and low costs of ownership, incorporating Renishaw's innovative 'isolated optical metrology' transducer design allows the SP80 to achieve remarkable accuracy with extremely long styli, a critical factor for the metrology equipment application sector the SP80 was designed to predominately serve. The probes itself is extremely compact, thereby freeing up valuable coordinate measuring machine working volume. Renishaw's approach to scanning technology development features the simple and space efficient, box spring motion system arrangement. This design is also extremely robust. Coupled with the low probe mass and low spring rate of 1.8N/mm, an improved dynamic response is achieved over traditional scanning probe designs. The result is that the SP80 allows faster scanning measurements to be taken.
Using an isolated optical metrology transducer system, the metrology equipment on the SP80 Renishaw probe directly measure the deflection of the whole mechanism, thus providing outstanding accurate position Sensing. The transducer design can detect sources of variable error such as thermal and dynamic effects. In contract, competitive probes with displacement sensors mounted on stacked axes suffer from an inherent latency under changing inertia loads, and cannot detect thermal growth of their internal mechanisms.
Isolated Optical Metrology can be defined as a feature of the transducer system. The high-resolution digital reader heads for each axis are fixed to the probe body and measure the deflection in each direction of scales mounted integrally to the motion system (see diagram below). Any inter-axis error caused by the arc motion of each pair of parallel acting springs is directly measured by the SP80 sensor system in our metrology equipment. The squareness and straightness of the SP80's axis are, therefore, not derived from the mechanism, but optically from the scale cube.
ISOLATED OPTICAL METROLOGY
Direct measurement of the stylus motion relative to the static probe body removes the need for moving wire connections that may impede motion.
An important feature of the reader-head arrangement is the ability to maintain an operating range of +/-2.5mm deflection in all axis for the SP80, even when using the heaviest stylus mass of 500 grams.
For example, for the Z axis this is achieved by having 7mm of usable range of scale, thereby using a different part of the scale as the motion system naturally droops under increasing stylus mass
Another remarkable feature of the reader-head design used in the SP80 is the capability to work perfectly within a large proximity range of between +1mm and +7mm from the scale.
Stylus change joint has a low release force; over-travel in X and Y causes the stylus holder to detach. Patented Z crash protection is provided by outer housing 'bump stop' preventing damage to probe mechanism and reader-heads.
Stylus deforms in a severe Z crash, whilst the probe mechanism is protected by 'bump stop'.
Interchangeability between SP80 and PH10M
Where the flexibility of a multi-sensor CMM is required, there are additional adaptor plates that make possible the rapid interchange of the SP80 fixed industrial scanning probe with the PH10MQ flexible indexing probe head that can carry either a touch probe or the compact SP25 scanning probe.
The standard SP80 is mounted onto the PHA80 and the standard PH10MQ onto the corresponding PHA3.
The CMM quill is fitted with the KM1/KM2 adaptor plate which allows the quick connect/disconnect of the PHA80 or PHA3 via a repeatable kinematic joint which features a quick lock/unlock by turning a key.
Renishaw probes and styli represent the best in metrology innovation and application. That’s why, other than our own scan heads, Renishaw probes drive every measuring system we sell. The creators of 5-axis technology completely evolved metrology with the REVO scan head and offer the same level of head articulation in the versatile PH20 tactile touch probe. We’re so dedicated to only using the best metrology sensors and sensor systems that we will match or beat any price on Renishaw probes you find. For more information about finding the correct Renishaw probe for your task or to learn about other Renishaw aftermarket products please call us at 248.295.4300 or email [email protected]