PASS Newsletter October 2011PASS-fit System |
12.10.2011 |
The PASS-fit system can be described as „flexible in handling“, „simple and secure in operation“, „developed for operators“.
This system was developed in order to enable a fast and easy alignment without the need for a alignment fixture.
The PASS-fit System has the excellent advantage regarding its high operational security, robustness and simplicity!
There is no need to use or buy the comparatively expensive alignment fixture as both the standard and special shapes can be produced with the PASS-fit system.
This system offers an enormous time-saving operation avoiding costly mistakes in the alignment process. Using a costly alignment fixture is eliminated. With only ONE single turn the punch
can be aligned to the exact index.
All special tools from PASS, e.g. Embossing Tools (Louver, Beads, Bridges, Lances etc.) are normally manufactured and delivered with our PASS-fit system.
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Contrary to other aftermarket systems with interchangeable punch/cutting inserts our system uses „Standard-punches“ and „Standard adjusting rings“ which are modified. Thus
enables and guarantees the well-known reliability which is known throughout the world for the tooling system TRUMPF.
In order to avoid movement in punch alignmet the punch is manufactured in one solid piece. This guarantees high precision accuracy which offers worry free tool operation throughout the punching
process. Due to the pin-slot-system within the punch and adjusting ring the PASS-fit system always guarantees a positive alignment of intricate special shapes, also tight clearance tools.
Additionally it was observed when clamping the adjusting ring, there is the possibility twisting of the punch can occur when axial/centrically clamping is made.
The PASS-fit system ensures that there will be no movement (twisting) when tightening the clamp-bolt. Therefore tight clearance tools in thin-sheets are possible.
Our punch does not need a clamping screw which could weaken the cross sectional area of the punch shaft (the clamping shaft remains solid). Therefore punching of sheet-thicknesses of 6 mm
and above - also in stainless steel - is also possible.
Predominantely a pin-slot system with larger pin surface area is used for punching shapes over 30 mm in order to prevent the twisting of the adjusting pin when punching near the edges of sheet
(keeping the punch in alignment).
Please find below the comparision chart and the advantages of the PASS-fit system to the system with changeable punch inserts:
characteristic
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PASS-fit System
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system with changeable
punch inserts
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useage/
sheet thickness
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up to s = 10 mm
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up to s = 2-3 mm
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stability
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perfect as made in ONE
solid piece
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risk of breakage
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adjustment
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optimal as stronger square
pin of 8 mm with larger pin
surface is used
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round pin with adjusting
(only punctual surface)
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change of punch
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approx.. 20 sec.
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approx. 90 sec.
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costs
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inexpensive as no alignment
fixture is necessary
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3 different, expensive punching
devices are necessary
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regrind length
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6,5 mm
for machine group I
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6,5 mm for machine group I
(9,5 mm when adjusting shims are
used)
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RESULT:
The PASS-fit system guarantees all the best of operation for the maintenance or machine operator:
* Extremely fast and easy adjustment of the tools
* Prevents expensive tool misalignments
* High operational security of the machine
* Best tolerance compliances (very thin sheets can be punched due to tight clearance tools)
* Extremely high tool stability (sheets up to 6 mm – also stainless steel can be punched)
* No expensive basic bodies are necessary
* Compatible to Standard-Trumpf Tooling system
Download technical data sheet (2.514 KB)
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