Bystronic UK said that the Pullmax Pullmatic 520 FC CNC punch press can be used as a press brake, making it possible to finish complex parts in one set-up.

The Pullmax Pullmatic 520 FC CNC punch press can perform thread tapping and be turned into a press brake, making it possible to finish complex parts in one set-up The machine can also equipped with a materials handling system (FC) for the automatic loading and unloading of sheets for 'lights out' or unsupervised operation

The Pullmatic 520 punching machine is a highly productive machine for sheet metal up to 8mm in thickness.

It is characterised by its speed, low noise, a quick and easy set-up, an efficient tooling concept and the latest Fanuc control system.

A fully programmable hydraulic stroke ensures maximised forming capacity and versatility, said Bystronic.

A hydraulic head also generally offers a much faster performance on thin gauge material.

The machine has a working area that allows 2500 x 1250mm sheet to be worked without re-positioning.

Automatic re-positioning is included too.

The positioning speed is 100m/min in the X-axis and 80m/min in the Y-axis.

Bystronic told manufacturingtalk that real manipulation speed of the work piece is up to 128m/min.

The punching force is 220kN (22 tonf) and the hit rate is up to 1200 hits/min (marking).

The Pullmatic 520 axes accelerate rate is up to a maximum of 24m/s2.

* Tool change system - the machine features the Pullmax patented tool change system that has made the Pullmax machinery so flexible.

A rotating punch head makes all tools indexable at a speed of 80 rev/min.

The tool changer now features a 20 station magazine that holds tools all with a maximum size of 90mm diameter (previously the largest tool size available was 75mm).

The magazine ensures a high degree of flexibility, and, optimum use of the machine and the sheet format used.

Such tool sizes allow for longer slitting tools and reduced straight line and radius profiling production times.

In addition each multitool can have five or ten different tools up to 16mm diameter.

All tools in the multitool can also be programmed at any angle like the single tools.

In essence, up to 200 tools are available and indexable.

Tool changing times are exceptionally quick ranging from 1s to 5s and this has boosted productivity significantly, said Bystronic.

Pullmax's vast experience in automated systems also features within the new range.

Access around the tooling system has been increased, allowing optimum use of part picking devices.

This height also allows forming with a maximum height of 75mm.

* Work handling - the Pullmax sheet loader is designed to provide maximum efficiency and operator safety.

The loader consists of a carriage with AC-servo control.

Standard features include: air-knife for sheet separation; corner lift cup to minimize double sheet pick-up and double sheet detection.

Through the CNC, the vacuum cup system also automatically switches cups on and off depending on blank size .

The unload system can handle punched nested parts and material skeletons in a reliable way, without any scratches or damages at the material.

There are grip positions where four material clamps grip the skeleton and pull it out on top of the brush covered jalousie table.

The skeleton will be released and lowered down on pallet systems or directly on skids.

The system allows for integration of automatic pallet changing, where punched nested parts and skeletons can be stored in to customised storage systems with unmanned production.

* CNC - the Fanuc windows based 160iBP control system has been specifically designed for sheet fabrication and features energy saving servo drives, fiber optics and a touch screen for user-friendly interfacing to the machine.

Other standard control features are, automatic tool management and job scheduling, ethernet network ready and integrated diagnostics.


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