Bar Immersion /Disk IMmersion UT (BIDIMUT)

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No pictures are currently available as the system is in production.

The BIDIMUT uses a total of 7 computer-controlled simultaneous axes: X, Y, Z, A, B, R (rotator), C (Turntable)

Our integrated (UNI FRAME) full stainless steel frame is very stiff and easy to maintain.

Two rotator bridges are mounted at the bottom of the tank. Each rotator bridge holds 2 keyed drive shafts of 35 mm diameter with 4 hard polyfenide wheels of 200 mm diameter each. The distance between the wheels is changeable along the keyed drive shaft to accomodate stable operation of different length bars or tubes. Because of the space between the wheels and the large difference in the diameter of keyed shaft a hook or other lifting tool can easily be fitted under the test bar. This makes loading or unloading very easy.

Each rotator bridge can be lifted out of the water for easy wheel maintenance or bearing repair. The second rotator bridge with its set of wheels can be aligned with the first rotator bridge. The first rotator bridge has a DC servo motor above the water level. The second is connected with a self-aligning, quick disconnect clutch. The system is installed slightly out of the water level so that the bar during rotation moves towards the driving wheels and against the lateral guidance wheel.

Each rotator bridge has the ability to accept a guidance wheel so that two independent short pieces can be measured at the same time with repeatable position. This ensures a more consistent axial positioning of the bar.

An index sensor measures the rotation of the actual bar on the first rotator bridge so that perfect C-scans can be made. It also stops the system if the bar or shaft under test looses contact with the lateral guidance wheel.

The turntable uses a DC servo motor with an integrated air motor to actuate the self-centering three jaw chuck. The motor features a heavy duty roller bearing. The underwater housing is slightly pressurized with air and a vent in order to eliminate condensation inside the motor compartment.

The X and Y axis use direct drive linear motors equipped with air-bearings. The motors are mounted on self-adjusting pivot points to ensure even loading. Because there is no mechanical contact of the moving parts there is no wear and no necessity for lubrication.

Because of zero friction there is a virtual "zero" backlash. Another advantage of zero friction is that the actual motor propulsion force can be limited. This minimizes the chance of damage to the part or the system.

The proven Stainless Steel Z-axis uses a rack and pinion drive system. Z-axis weight compensation reduces the stress on the driving gear system so that no lubrication is required. All the drive, bearing and gear components are made of stainless steel or other corrosion resistant materials. The Z-axis rests on a tripod construction that also allows the Z-axis to be easily adjusted to be perpendicular with the rotation axis.

The tripod construction features a collision detector that disconnects the power to all motors in case the Z-axis or gimbal makes contact with the part.

The tripod construction features also two dimmable low voltage halogen lights, which illuminate the part from above.

The Gimbal-A and Gimbal-B axis use "zero" backlash gearboxes. This unique design has the motors integrated inside the gearbox. This creates a small-size manipulator allowing entry in small bores. integrated in the wiring are two hoses. The motor gearbox units are filled with oil.

The tripod construction features two dimmable low voltage halogen lights, which illuminate the part from above.

The Gimbal-A and Gimbal-B axes use "zero" backlash gear boxes. This unique design has the motors integrated inside the gearbox. This creates a small size manipulator allowing entry in small bores. Integrated in the wiring are two hoses. The motor gearbox units are filled with oil.

The calibration block holder is mounted in the middle of the tank, between the turntable on the left side and the Bar rotator on the right side. It is fully adjustable to allow alignment of the reference standard with X, Y and Z-axis. It is made of Stainless Steel.

The water system uses two replaceable two replaceable cartridge filters. The pump has a constant flow design (turbine_ so it is able to remain pumping even if the filters are somewhat clogged. A pressure gauge indicates the remaining life of the filter cartridge.

It also has a skimmer that removes dust and dirt from the water surface.

The water level is automatically controlled with a sensor switch.

To eliminate potential electrical disturbance of the Ultrasonic signal utmost care has been taken to avoid generation of Electro Magnetic Interference (EMI).
- All the power supplies used in the system are non-switching. (Linear).
- All motor controllers are non-switching. (Linear)
- All control connections between the computer and tank are optical insulated.

For the XP ultrasonic software acquisition / evaluation specification go to www.vamsterdam.nl


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