MEASUREMENT OGP SmartScope CNC 670
OGP, a UK-based supplier of coordinate measuring machines (CMMs) for smart metrology, has launched the CNC 670 multi-sensor smartscope system in the UK and Europe. The new machine is the biggest in the company’s range to date, and its impressive XYZ range means that it is even capable of measuring components as large as an automotive engine block. Despite its remarkable size, the intelligent use of space in the mechanical design of the system means it retains a relatively small footprint. The CNC 670 is fitted with
a large magnification, 12:1 range zoom lens that calibrates itself automatically after each magnification change. It also features a stable granite bridge
that provides metrological stability across the entire X axis, while dual Y axis scales assure high accuracy and repeatability. The DC motor and drive package provides XY travel of 200mm/sec. As a result, the system is able to produce accurate and repeatable measurements in a short space of time and within the constraints created by the manufacturing workflow. LED illumination, including green back light, white coaxial TTL surface light and OGP patented programmable SmartRing lights, means the CNC 670 can address most lighting needs with ease. Optional measurement software provides 3D capability with full sensor and rotary integration.
MEASUREMENT
bf1systems dual gain intelliamp
Bf1systems has announced that its dual gain intelligent amplifier was undergoing testing in the F1 young driver test at Abu Dhabi’s Yas Marina race circuit. The new intelligent amplifier (‘intelliamp’) allows F1 teams to analyse dynamic loading and aero balance data from a single strain gauge installation on each pull and push rod. Bf1systems was approached by a team who wanted to analyse both dynamic loading (high loading) and aerodynamic balance (low loading) from a single suspension part. A commonly used solution
to achieve this involves adding a second strain gauge, with a separate higher gain amplifier being added for the aero balance analysis. Bf1systems’ design team opted to re-design its intelliamp to incorporate two separate 0-5V outputs with individually scaleable gains and offset. In addition to providing two separate outputs, the new amplifier also incorporates bf1systems’ microprocessor- controlled temperature compensation to ensure the part’s outputs are unaffected by
changes in ambient temperature. The intelliamp can compensate for changes in temperature from 10degC-125degC, with multiple parts all containing calibration tables to ensure common outputs. This removes the requirement to enter part-specific calibrations into the logger when components are changed. The amplifier also
incorporates a filter stage with a two-pole, low-pass Butterworth filter, which can have its cut-off frequency configured at build time. Despite the addition of extra components in comparison to the single channel intelliamp, the dual gain amplifier retains a small form factor of 15 x 18 x 5mm, ensuring that it can still be mounted directly onto the push or pull rod. The close proximity of the electronics to the strain gauging ensures that signal noise is kept to a minimum.
The dual gain intelligent amplifier will be just one of the new products bf1systems is showcasing at Autosport International, where they can be found on stand E353
February 2012 •
www.racecar-engineering.com 79
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