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

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.

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.