Design Engineering

Small wireless machine tool probe

By DE Staff   

Motion Control General Medical machine tools Renishaw wireless probe

Renishaw has announced the availability of the RMP24-micro, “the world’s smallest wireless probe for machine tools.” This probe combines compact dimensions with exceptional metrology performance for precision manufacturing.

The RMP24-micro measures just 24 mm in diameter and 31.4 mm in length. Despite its small form factor, it delivers impressive measurement repeatability of 0.35 µm 2σ, setting a new standard for wireless probes in this size category. The micro-kinematic mechanism within the probe promotes ultra-low trigger forces, ensuring gentle contact with workpieces during probing. This not only minimises the risk of damage, but also reduces part deflection for enhanced measurement accuracy.

Designed for compact machines that manufacture high-value, high-precision components, the RMP24-micro is well suited to applications in industries including medical, dental, watchmaking and micro-mechanics. Its compact size, low trigger force and radio transmission make it the optimal probe for such small machines with delicate workpieces like those in found these applications. Tight measurement tolerances are easily achieved with the probe’s excellent repeatability and lobing performance, whilst its short length and radio communication makes it useable in confined spaces.

The RMP24-micro uses Renishaw’s updated radio transmission protocol to communicate seamlessly with the machine tool controller via the RMI-QE radio interface. With an operating range of up to five metres, it employs a 2.4 GHz frequency hopping spread spectrum (FHSS) protocol, compliant with radio regulations worldwide. This FHSS technology has excellent power efficiency and allows the probe to coexist harmoniously with other radio sources such as Wi-Fi, Bluetooth and microwaves.

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