ps:®MT3RiB-31,75 for tooling system THICK TURRET
For more than 30 years Multitools are known as a flexible solution for CNC punching machines. The necessary flexibility for an automatically working without manual tool changes is established on the rotating station of the punching machines. There is no problem for conventional Multitools to work with thin sheets, BUT when used with thicker materials: Steel from 3mm, Alum from 6 mm and Stainless Steel from 2 mm thickness an up will prove to be a lifetime-killer: a standard and basic design the center force application and excentric aligned tools provokes alignment issues of the inserts. Users report this on high stripping forces and early wear of the guides at punching forces up to 300 kN.
3-Station Multitool ps:®MT3RiB-31,75 for tooling system THICK TURRET
- simple and quick change of punch inserts, with maximum process stability
- minimum tool and guide wear, due to single-pressure-operated punch inserts and max. guide length
- special spring to control grind life after sharpening punch inserts
- internal and external lubrication channels
- no “witness-marks” on the sheet, due to single active punch – all unused punches stay up
- individual adjustment of stripping force
- maximum sheet thickness of up to s = 6 mm mild steel and s = 4 mm stainless steel
- possibility for using the standard-inserts of product-line ps:®beta-V2®
The tool designers of PASS Stanztechnik AG optimized on the one hand the distribution of foces within the Multitool with the clever devised design. On the other hand the best possible guide ratio at the punches is provided. Eight punching springs are arranged in the upper part of the tool and replace the previously conventional center stripping spring in the bottom of the tool. The quantity and the forces of the springs can be varied indiviually for adjustment of special applications. The arrangement creates space in the bottom of the tool for optimized holding and guide design for each individual punch insert. All punches are held axial on a rotating punch holding plate. Only the active punch will move axial through the hole of the punch holding guide. Through this hole the punch will act individually from the activity pin. For activating and positioning of the tool the tool head and tool bottom are screwed against each other.
The difference to the conventional Multitool designs can be found in the design of all non-active punches which remain stationary up in the tool. The result for the active punch is a stabilized guide ratio from punch diameter to guide length to a dimension of 1:3. The guide ratio for conventional designs with a common guide and movement of all tools in one holder shows a disadvantageous value of 2:1.
The design of the Multitool ps:®MT3RiB-31,75 enables a simple and fast change of the inserts. For this reason the screw in the upper part must be loosened. The hole of the punch holding plate will need to be rotated to the desired insert which needs to be changed The punch can then be removed after a removing the “clicked” stripper plate located at the bottom of the tool.
A control tool simplifies the adjustment of insert after the insert has been resharpened. A control-spring is placed in the center of the upper part of the tool which will be pressed against the block by manual operation of the Multitool. The insert at this position can easily be measured an adjusted to the value of the useable tool length. This is a quick and simple way all users already working with this tool appreciate! The tool is also equipped with a central lubrication.
The ps:®MT3RiB-31,75 for tooling system THICK TURRET can be used for aluminium sheets (0,4 - 6 mm), for steel with an elastic limit of 420 N/mm2 (0,5 - 4 mm) and Stainless Steel (0,5 -3 mm).
The continuous development of this multitool enables the machine operator to use standard-tool inserts from our product line “ps:®beta-V2®” for Station A and B in order to equip the machine in a still more flexible way.
Of course, PASS maintained the attention of this new design in regards to length adjustment which is appreciated by all customers .