1. Standardized fixture frame made by metal which is easy to change;
2. Needle plate: non-metallic acrylic sheet, anti-static, FR4, G10 etc., implanted test pins by high-speed CNC drilling machine.
3. Bearing: for precise alignment and easy
installation of the needle bed.
4. Spring: it holds up the flowing board to balance UUT, the
equilibrium pressure of each test needle in the needle bed.
5. Floating board:as a buffer board placed UUT, size and hole position is determined by the UUT, carved machining, optional anti-static material.
6. Pressure bar:as the proper installation location, press and hold
the UUT, allowed to equilibrate contact test pins, the material
is PVC or anti-static material.
7. guide shaft: for
guiding needle bed precise alignment.
8. Partition: Pressure bar installed on
the spacer effect is to minimize the vibrate
during pressing down.
9. Top board: connecting the needle bed, installed
at the machine.
10. Socket board: installation of ICT or FCT cable.
11. Column: supporting the needle bed.
12. The guide shaft: floating plate for guiding the UUT.
13. Socket board: installation of ICT or FCT cable.
14. Balance column (rubber stopper): Glue stick installed in the relative position on the role of the pressure test
points balance the UUT.
15. The column stopper: to support the pressure on the needle plate to make sure needle plate is not deformed ensure balance.
Needle bed design
principles:
1. Let UUT to
balance a variety of external
pressure, to ensure that no deformation.
2. The test can
accurately rolling pin on a test point to
ensure good contact!