Press Brake machine is a mechanical device specially used for bending metal sheets. It plays a vital role in the field of metal processing. It is mainly composed of a bracket, a workbench and a clamping plate. The workbench is fixed on the bracket and consists of a base and a pressure plate. The base and the clamping plate are connected by a hinge. The base consists of a base shell, a coil and a cover plate. Its working principle is that the current passes through the coil to generate a magnetic field, exerting gravitational force on the pressure plate to accurately clamp the metal sheet.
In industries such as automotive manufacturing, aerospace, building construction, and home appliance production, press brakes play an indispensable role in producing a variety of complex metal parts and structures.
Next, we will explore how to choose the right press brake machine model. In the decision-making process, there are two key factors that need to be carefully weighed.
1. workpiece
The specific needs of the part being produced must be considered. The key is to select a machine that can efficiently complete the machining task while having the shortest table and minimum tonnage to ensure economy and efficiency.
There is usually a calculation formula:
P=650* SSL/V
P———Bending force, kN；
S———Sheet thickness, mm；
L———Bending length of sheet metal, m；
V———The opening width of the bottom Die, mm；
Generally speaking,V=10S or 8S
For example, if we need to bend a plate with a thickness of 6 mm and a length of 3 meters, what tonnage of bending machine do we need?
According to the above formula，P=65066*3/V, V=10S, Calculated :P=1170KN，1KN=0.1Ton，Therefore, it can be calculated that 117 tons of bending pressure is required. According to our Primapress standard machine model recommendation, it is recommended to choose a 120T3200 press brake machine.
It should be noted that this formula is applicable to bending carbon steel plates. If you need to bend metal plates of other materials, please feel free to contact our Primapress sales for professional advice.
2.bending accuracy
When choosing a press brake, bending accuracy is a crucial consideration. This factor will determine whether you choose a CNC press brake or an NC press brake. If the bending accuracy requirement is as strict as ±1° and cannot be compromised, then you must look at the CNC model.
The slide repeatability of a CNC press brake is as high as ±0.01 mm, which enables it to achieve precise angle forming, provided that it is used with high-quality tools. In contrast, the slide repeatability of a NC press brake is ±0.05 mm, and when the appropriate tool is used, a deviation of ±2 to 3° is usually produced. In addition, CNC press brake excel in rapid tool change, which is an advantage that cannot be ignored for production processes that require frequent bending of small batches of parts.
If you have any troubles when choosing a press brake, please contact us at Primapress company. We will have professional sales to answer your questions and help you choose the most cost-effective machine to maximize your benefits.
