How does a CNC press brake work?

When it comes to bending sheets and plate metals to precise lengths and angles, there is no other machine quite like the press brake. Fast forward to today, press brakes have evolved into highly advanced machines powered with hydraulic systems and computer technology such as the CNC press brake. If you have never heard of it before, it’s easy to get confused and overwhelmed. Here’s a simple explanation of how they work.

The Content list:

1/ How does a CNC press brake work?

2/ Parts of a press brake machine

How does a CNC press brake work?

To cover the basics, a press brake has a ram fitted with a punch that forces the material being worked into a die. The material is then formed into an angle corresponding to the angle of the die or the depth the punch forces it into the die. Press brakes can be powered by Mechanical methods, hydraulic methods, electric methods, or a combination of these processes. Press brakes can also be operated by manual or CNC controls.

The CNC press brake is basically programmed to accept the sheet metal component flat blank at a given distance which is defined by the programmable backstop, the point where the bend will be formed. The distance that the programmable V blade enters into the V block will define the angle achieved of the final bend. The further the V blade enters the V block, the tighter the final V bend will be. The final component can be a combination of different bend lengths and angles generated by the CNC program positioning the sheet metal component blank at defined positions and programmed angles. The maximum length of the sheet metal component that can be bent up is obviously defined by the length of the CNC press brake bed but the thickness of the material is a function of the material tensile strength and the amount of tonnage available from the machine to form the sheet metal.

The CNC press brake fixes the punch and die on the upper and lower worktable and utilizes the relative motion of the worktable driven by hydraulic transmission as well as the shape of the punch and die to achieve the bending formation for sheet metal materials. As the name indicates, these machines can be simply operated via the touch, feel, and sound of the operator.

Parts of a press brake machine

There are various parts that make up a press brake machine. The frame of the press brake is welded by the left and right upright plates, worktable, and vertical moving ram. The material being bent upwards is called the “Flange” and it is measured and controlled for accuracy through a device on the press brake mounted in the rear of the machine called the “back gauge”. The back gauge of the CNC press brake utilizes a motor-driven gearbox or chain-driven gaging system to output a synchronous movement of two balls or lead screws which in turn move the gaging bar in and out to the exact position required. Generally, the CNC press brake machine includes four main parts: Mechanical parts, Electrical parts, Hydraulic parts, and CNC controller.

Tianshui Metalforming will share with you more interesting things about CNC bending machines and you can explore numerous high-quality CNC press brakes too. Welcome to our website and discover more: https://www.tsdpressbrake.com/.