With the new step taken by TESA with the introduction of their TESA-SCAN product family for non-contact measurement, the need for developing TESA-VISIO like systems as a further contribution to quality control appears as the next logical step to the company. So to complement, extend and enhance this product line, TESA have engineered a new line of high precision machines, including the innovative TESA-VISIO 300 available today in three different models. Each model comes equipped with a 300 x 200 mm coordinate stage. 1 Manual video machine provided with TESA-VISTA – the software tool for the most varied applications. Made simple to use, this software is within the reach of any end-user. 2 Manual video machine delivered with PCDmis – the enterprise-wide metrology software. Using the Vision capability of this software, the machine provides users with a powerful tool for non-contact measurement in two and three coordinate directions. 3 Automatic CNC controlled video machine (DCC) equipped with DC servomotors. Running the PCDmis Vision software, this machine is one the most cost-effective currently available on the market. Since users are not limited to a single choice when deciding upon the software to use, this results in a number of benefits our customers do very much appreciate.

Manual machine versions
These two versions have a coordinate stage fitted with a quick release system in both axes X and Y. This system enables fast displacements for locating the geometric feature to be measured. Disengageable wheel drives are used for quick motion in the Z-axis as well as fine setting of the focal length.

DCC machine version
On this version again, the coordinate stage along with the vertical axis are displaced by means of DC servomotors. Their speed is tightly controlled through the rotative encoders, especially when the joystick is used or high precision images are processed in the X-direction. This for example. A plain axis coupled with planetary arranged ball bearings allows the stage to be displaced mechanically. This system also acts as coupling clutch in case of collision. Vertical displacement is ensured by rack and pinion.


Machine construction
The machine’s all aluminium construction provides the high structural rigidy and stability needed for any high precision system applied for dimensional inspection.

The coordinate stage features prestressed carriages mounted on ultra-precise monorails to ensure a reliable stability over years. There by, the machines can be used in both the workshop and the measurement laboratory. Distance between the two axes X and Y has been lowered down to the minimum for optimum compactness.

Through the swan neck shaped structure supporting the Z-axis, the guiding system could be mounted as close as possible to the optics. This system is totally counterbalanced.

The measuring systems are based on linear encoders mounted on the three axes. Each of them is identical to those used on our small MH3D, which proved to be very accurate and
dependable.

Optional 75 or 150 mm height extensions are also available to allow easy inspection of large test pieces.
Working distance A = 60 - 210 mm basis model
B = 135 - 285 mm using the 75 mm height extension
C = 210 - 360 mm using the 150 mm height extension
150 mm
A B C
75 mm

Illumination
Light sources with coloured LEDs. This valuable technology offers long-lasting cold light sources (over 50.000 hours) with low power needs.

Transmitted light (diascopic illumination) is produced by a green LED with programmable light intensity.

Reflected light (episcopic illumination) is created by a so-called Fresnel lens consisting of a dual line of 24 LEDs. Intensity of this white ring light can be set through the software as well. An extra ring light fragmented into 4 programmable segments is available as an option. On request, a coaxial light (white LED) can be supplied for use in conjunction with the motorised zoom.

Optics
Each variant comes with an USB2 colour camera with a resolution to 3M pixels. The manually operated version TESA-VISTA has a fixed objective permitting total magnifications of 25x, 50x or 100x on a 15” TFT monitor. Optionally, this basis version can be fitted with a motorised zoom or a telecentric objective. Both PCDmis models, whether manual or DCC,
feature a motorised zoom (0,7x to 4,5x). The software also includes a calibration routine for the zoom, which makes inspection possible throughout the full range with no effect on accuracy for the measurements taken within the viewing area. Being an integral part of all our machines, the laser pointer helps users locating the area they want to check.

TESA-VISTA application software
This simple-to-use software is very user-friendly. Using TESA-VISTA, the widest number of part features and elements will be measured reliably and quickly.

Key Features
– Viewing in either axis X, Y or Z with a resolution to 0,001 mm.
– Zero setting of displayed axis by just a click.
– Metric/Inch conversion.
– Cartesian and polar coordinates.
– Creation and execution of part programs.
– Storage of the video image.
– Drawing of the measured feature shown in the active window.
– Automatic entry of measured points (programmable).
– Automatic edge detection.
– Z-measurement with on-screen help and guidance.

Features and Functions
– Point, radius, diameter, arc of circle, angle, line, distance (X/Y), slot, Z-measurement.
– Alignment, perpendicularity, parallelism, theoretical point, theoretical diameter, Translation of X/Y origin points.