MachineMfg

Press Brake Machine For Sale

Affordable Price

With the same quality, our prices must be the best compared to other suppliers.

Good quality

When we say good quality we mean really good quality, not just talk. Good quality is what really impresses customers.

Timely after-sales service

In time 24x7 hours service and oversea service avaliable

Some Words for You

I believe you're on the process to find the best press brake machine on the market. However, shopping online for the perfect press brake for your business can be tough. You need a new press brake, but you still haven't found the reliable supplier, or I can say, the manufacturer.

Quality, costs, uses, services, and many other factors will decide which press brake you buy. That's why every step of the way to buying a press brake machine requires great care. And you should do your research very carefully before saying yes to the press.

After do the research and start talk to the press brake suppliers, and get quotes as well as technical data, you will see a clear decision unfold, and you have to do your due diligence to know which one should you cooperate.

Our mission is not only to provide you the best press brake machine on the market with unbeatable prices, but also ensure our machine works well during its service life. Then a professional team will be needed and you can TRUST US to be your best choice.

When you're ready to discuss the details about our press brake, contact us and start our negotiation. We'll provide you our professional solution that you need.

What Our Customer Say

We at R S Machine tool Services are a team of well qualified engineers having experience for past 30-40 years working towards providing best manufacturing solutions for sheet-metal forming with And offered our services to 400 plus customers across Karnataka and Hosur Road We supply high quality reliable products with excellent customer support and after sales services. In collaboration with ADH machine tools we have 50 plus customers who are using our reliable and robust products with positive feedback and testimonials. We supply machinery such as Press brake, Shearing and Fiber Laser Cutting Machine of ADH machine tools.
Raju R
CEO

How to Calculate the Min Bending Edge of Sheet Metal

Table of Contents

L Bending

1) Factors determining the minimum L bending

As the middle of the V groove is hollow, when forming, the edge fold must be longer than the hollow section and the specific landing edge size varies in the production of different companies (the lower section of V groove is under use for a long time, the R angle increases, which makes the scrap edge distance increases accordingly, otherwise, “sliding” will happen)

2) Reduction formula (empirical): 6*T/2+0.5+(1.8*T/2)

3) As the picture below shows, when T=1, K=1.8*1, the minimum L Bending is 3+0.5+0.9=4.4

Factors determining the minimum L bending

V Groove/Thickness 3 4 5 6 7 8 9 10 12 15 16 18
0.5 2.5 3
0.8 3.2 3.7 4.2
1 3.5 4 4.5 5 5.5
1.2 3.5 4 4.5 5 5.5
1.5 4.8 5.2 5.8 6.2 6.8
2 7.5 8.5
3 11 12
4 15 16
5
19 20
22 24 26 28 30

U Bending

1) U bending types

A. Regular forming by press brake punch

B. Gasket-reverse folding-hemming   (firstly bending to 30°, placing a suitable gasket in the middle and then hemming )

2) Factors determining the minimum U bending

  • Shapes of punch (shown in the following picture).

Judging from common punch mold, the best one for U folding is “gooseneck punch” which has many types and specifically subject to the requirement of various companies.

  • Bending size (shown in the following picture).

The increasing relation between two sizes:

The longer A is, the longer B is.

Factors determining the minimum U bending

3Reduction formula (empirical value of gooseneck punch )

◆ 0.5MM sheet:

Minimum U bending: A =7.67, B= 0.5, minimum L bending=3.0

Increasing value: whenever A increases by 1mm, B increases 1.87 accordingly.

Formula: when A size is known, then B size=(A-7.67)/T*increasing value + the minimum L bending value of this plate

For example,

when A=15, then B=(15-7.67)/0.5*1.87+3.0=30.4

When B size is known, then A size=(B- the minimum L bending value of this plate)/increasing value *T+7.67

For example,

when B=30.4, then A=(30.4-3)/1.87*0.5+7.67=15

◆ 0.8MM sheet

Min U bending A size=8.5,B size=0.8, min L bending=4.2。

Increasing value:1.87/0.5*0.8=2.99

◆ 1.0MM sheet

Min U bending A size=8.94, B size =1.0, min L bending=4.5

Increasing value: 1.87/0.5*1.0=3.7

◆ 1.2MM sheet

Min U bending A size=9.3, B=1.2, min L bending=4.5

Increasing value: 1.87/0.5*1.2=4.5

◆ 1.5MM sheet

Min U bending A size=10.3, B= 1.5, min L bending=6.2

Increasing value: 1.87/0.5*1.5=5.5

◆ 2.0MM sheet

Min U bending A size=12.7, B= 2.0, min L bending=12.0

Increasing value: 1.87/0.5*2=7.4

Notes:

1. When A size exceeds 85.0MM and B size exceeds 60.0MM, this formula is inapplicable.

2. Attached table: A= test value, B= minimum L bending, K=test value

Thickness A size (min) B size (min) K
0.5 7.67 3 1.87
0.8 8.5 4.2 2.99
1 8.94 4.5 3.7
1.2 9.3 4.5 4.5
1.5 10.3 6.2 5.5
2 12.7 12 7.4

Z Bending

1) Z Bending Types

  • When H is larger than or equal to 5T, calculating as per two 90°bending.
  • When H is lower than 5T, one-time forming is enough

2) The main factors that affect the minimum Z bending value are the width of V groove and the distance from the center of the V groove to the edge.

Z Bending Z Bending

Z Bending

3) Formula: 6*T/2+edge distance of V groove +(1.8*T/2)+T(see the picture)

For example, in the case of 1.0mm plate, to the edge distance=1.5, then the minimum Z bending H=6*1/2+1.5+(1.8*1/2)+1=6.4.

Leave your comments below

Join 30,000+ Readers to Get Our Lastest Articles!

Subscribe
Your information will never be shared
close-link
May I help you?
Please feel free to let us know what can we do for you.
close-link

error: Content is protected !!
Scroll to Top