Lumbered quartz bar adjustment

Automated X-ray adjustment of bars and assemby into bar stacks

The most recent development in 2008 is a machine for automated X-ray adjustment and assembly of lumbered AT-quartz bars into bar stacks.

Slicing of quartz bars is most effective when a high number of bars can be processed in one single step. Our new machine is a special custom design for building stacks of up to 6x5 lumbered quartz bars. Bars are filled into the magazine and are then automatically transported, measured, X-ray adjusted and then pressed against and fixated into a stack. UV-light is used to cure the adhesive glue.

X-ray measurement of end face orientation

Heart of the machine is the X-ray system consisting of tube, detector and computer for control and evaluation. The quartz bar orientation can be fine-tuned by means of a high-precision angular adjustment unit integrated with the lift system. The lift system can exert force for pressing the quartz bar down so as to trigger glue curing, while UV-light is used in addition.

Assembly of up to 5x6 Stacks of Lumbered Quartz Bars

The linear translation stage carries the bar magazine and the glueing table. Bars are initially placed in the magazine and are then automatically processed one by one and layer by layer. Bars are assembled into the target stack, which is bonded and cured once for every bar and once for every layer using a high-power UV-lamp. The stack geometry can be selected by the user. Also the curing times can be adjusted as needed.

Machine Features

• Max. quartz stack size 5x6
• Measurement principle Theta-Scan
• Measurement duration 20 sec
• Typical processing time per bar ca. 2 minutes
  (mainly depends on time for adhesive glue curing)
• Typical angular adjustment precision 10 arc sec

Machine Specifications

• Radiation full-protection housing
• X-ray generator max. 1.2 kW
• X-ray tube, Cu anode max. 1.5 kW
• Modern control computer and screen
• Easy to use control software with graphical user interface
• UV-lamp, Hg max. 70 W
• Dimensions 1050 x 850 x 1550 mm
• Weight 135 kg
• Power supply 230 V / 50 Hz
• Max. power consumption 2.5 kW

View of the main components only; other parts removed.

Top view showing the measurement geometry.

Lumbered quartz bars in magazine and on glueing support.

Total view of the machine.

Further information:

• Prospectus of the bar adjusting machine