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The term positioning aid, as used in this context, marks devices that allow an easier and precise positioning of (suction) blocks or of the workpiece in CNC-machining centres.

Often workpiece support are termed as positioning aid, which are not further considered, as they facilitate the application and relocation of the workpiece on the table but not the positioning in the proper sense.

Types of positioning aids:

  • LED position display on console tables:
  • The consoles and the machine table are equipped with measuring tapes. The LED display on the handles indicates the positions where the console (with the suction blocks on it) shall be moved to. A location check is not provided.
  • The consoles are equipped with encoders. The LED displays show the nominal position or the distance and the movement direction. Moreover, there is a signal informing the operator that the reference position has been reached, in some cases a pneumatic clamping is performed. This kind of positioning aid is often used for dowel- and hole line-drilling units, too.
  • LED luminous tape on console tables: There are rows of LEDs at the machine table and on the consoles which light up at the given positions of the consoles and the suction blocks.
  • Cross hairs laser on console- and grid tables: The machine has a laser, located on the aggregates support, which projects a cross hairs on the machine table. By the means of the control system, each position of the suction blocks is individually approached in order to show the operator where they need to be moved.
  • Contour laser on console- and grid tables: The outline of the workpiece may be projected on the surface of the machine table. This process can optionally be completed by the ideal positions of the blocks which were calculated by the control centre. Since this is the only system allowing the comparison with the contour of the work piece, the operator has the most direct control over the positioning of the blocks.
  • Line laser: Line lasers are rather exceptions. The SCM Group partially uses this kind of laser on machines for window construction in order to make it easier for users to identify the optimal support position of the work pieces (especially for tables with automatic mounting aids).

Obrázky

LED-Positionierhilfen
WEEKE, 2014
Saugerpositionierung mittels Fadenkreuzlaser (untere rechte Ecke des Saugers)
FORMAT 4, 2010
LED-Positionsanzeige
MORBIDELLI
LED-Leuchtband
WEEKE
Laser-Fadenkreuz auf einem Rastertisch
SCM, 2006
Funktionsprinzip Konturenlaser
HOMAG
Linienlaser eines CNC-Bearbeitungszentrums
2002
Laser-Fadenkreuz mit positioniertem Blocksauger
2001