How to calculate the bending force of bending machine

1.

Approximate calculation formula of bending machine pressure: P = 650ssl / V

P: bending machine pressure (KN)
L: plate width (m)
s: plate thickness (mm)
V: lower die opening (mm)

reference data: Bronze (soft): 0.5p stainless steel: 1.5p
Aluminum (soft): 0.5p chromium molybdenum steel: 2.0P

2. ? don't get it.... If you are using the corresponding cutter and lower die of the bending machine on the bending machine, there is one in the manual of the bending machine; If it is your design of the die or other, then before the design of these data calculated, specific you refer to the mold design.

3. This is a good example. http://jpkc.cec.e.cn/jpkc/skgyzb/wlkj/7-23.htm

4. Ha ha, manual folding machine, the pressure is about 37% of ordinary bending machine.

5.

40t / 2200 or 63T / 2500 is OK. 40t / 2200, 37000, 63T / 2500, 50000

formula: tensile strength × Square of plate thickness × Bending length ÷ Width of lower die × 1+4 × Plate thickness Z ÷ Width of lower die) = required pressure (unit: KN)

tensile strength Al: RM = 200-300

MS: RM = 370-450

SS: RM = 650-700

so the required pressure of bending machine is: 450 × three × three × one point two ÷ eighteen × 1+4 × three ÷ 18) In the beginning of plastic bending, the sheet metal is free bending. With the pressure of the upper die or the lower die, the sheet metal will undergo elastic deformation, and then enter into plastic deformation, The sheet metal and the inner surface of the V-groove of the lower die are graally close, and the curvature radius and bending arm are graally smaller. Continue to press until the end of the stroke, so that the upper and lower die and the sheet metal are close to each other at three points. At this time, a V-bending is completed, which is commonly known as bending

6. (2) In a member state, a member state, a member state, a member state, a member state, a member state, a member state, a member state, a member state, a member state, a member state.

7. www.mujiou.com Press Brake Tool