Published 14th May 2018
When it comes to metal bending pressbrakes, there is a world of difference between knowing how to use them, and understanding how they perform the tasks to which they’re trusted. You might simply want to use your pressbrake for that which it was born to do; bend sheet, and that’s perfectly fine…But learning more about the processes involved, the principles and the finer points will achieve two very valuable things:
It’ll give you a deeper insight into the capabilities of your pressbrake, what it can actually do and how, and it will allow you to achieve better and more consistent results.
The first, and most important thing to know, in the case of your trusted pressbrake is the various axes; where they are, what they do and how they can help you get the best results.
The Y axis
The Y axis can be found on a synchro machine and is broken down onto the Y1 and Y2 axes; they work independently on the top tooling to control the left and right cylinders. These give the top beam an incredibly even drop and can be adjusted independently for complete control to keep the beam level.
The A axis
If work pieces are heavy, then crowning becomes a serious issue, the A axis helps to alleviate the risk by making adjustments across the beam symmetrically. The A axis adjusts the entire beam but focuses more on the middle, to counteract bowing.
The Z axes
Broken down into the Z1 and Z2 axes, both can be independently programmed. If you are working with small parts on your pressbrake, or need to frequently adjust the width of its fingers then the Z axes can be programmed to save the time swallowed up by manual adjustments for each different bend.
The R axes
Here, the R axis controls the backgauge’s bar height up or down. Invaluable if you plan to put a bend into a piece, then another bend further into the same piece. The R axis can be broken down into R1 and R2 axes for complete backgauge control, ideal for tilting and more bespoke work.
The X axes
This axis controls the backgauge forwards and backwards. If you need to measure flange length as you bend, a pressbrake with an X axis is invaluable. When the inserted sheet touches the backgauge, then the correct point to begin bending has been identified. The X axis can be broken down into X1 and X2 axes for complete backgauge control, similar to the R axes.