1. Special Tools Guide
  2. U-Bending (Counter-Holder Type)

U-Bending (Counter-Holder Type)

SPCC : 0.6 - 2.3mm SUS : 0.6 - 1.5mm

This tool bends two sides simultaneously and it results in small width. There is height limitation for two sides and two sides becomes wider in open end, but flatness and dimensional accuracy are quite good for mass production type.

Work Sample Work Profile Tool Image
U-Bending (Counter-Holder Type) U-Bending (Counter-Holder Type)2 U-Bending (Counter-Holder Type) Tool

Tool Spec.

Mat. SPCC, SUS, AL
Thickness   mm 0.6 - 2.3(SUS less than 1.5)
Hight (A/B)   mm t x 4 - 30
Width(C)  mm t x 4 - 30

Required Tonnage

Required bending tonnage /per m(SPCC) unit kN/m
Width(C) mm 5 10 15 20 30
Thickness mm 0.6 190 170 170 170 170
0.8 270 250 240 230 230
1 350 310 300 290 280
1.2 420 380 360 350 340
1.6 600 530 500 480 470
2 770 700 650 620 600
2.3 920 800 760 740 720

* Multiply x 1.5 to above figure for stainless steel, and x 0.6 to Al A5052.

Necessary Tonnage Calculation

SPCC Tonnage /m above x1.0 x product length(mm)÷1000
SUS Tonnage /m above x1.5 x product length(mm)÷1000
AL Tonnage /m above x0.6 x product length(mm)÷1000

Cautions

Marring

Marring appears on the die side.

U-Bending (Counter-Holder Type) Slide Marring

Check Machine Capacity

Be sure that required tonnage gained by equation above does not exceed the machine capacity.

Product Accuracy

Product bottom width C accuracy ±0.2mm. Upper wide slightly wider than bottom wide. R1 becomes approx. material thickness.

Open Hight

The product is removed from the side way after bending by depending upon machine open height and product height H.

 

Special Tools Guide