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TECHNICAL GUIDE

PRESS BRAKE TOOLS

vol.12 TYPES OF BENDING SHAPES

TECHNICAL GUIDE

BENDING TOOLS

vol.12 TYPES OF BENDING SHAPES (HEMMING BENDING, STEP BENDING)

There are many bending shapes and depending on the product dimensions and accuracy,
it cannot be bent at once, so multiple bending processes and multiple tools may be used. In recent years,
special tools have been developed and used to improve efficiency, safety and quality.

TYPES OF BENDING SHAPES Fig. 1
TYPES OF BENDING SHAPES Fig. 2
〔 Example of bending shape 〕

1. HEMMING BENDING

1. HEMMING BENDING Fig.

2. STEP BENDING

2. STEP BENDING Fig.

3. V-BENDING

3. V-BENDING Fig.

4. CURING

4. CURING Fig.

5. U-BENDING (1)

5. U-BENDING (1) Fig.

6. U-BENDING (2)

6. U-BENDING (2) Fig.

7. HAT SHAPE BENDING

7. HAT SHAPE BENDING Fig.

8. PIPE BENDING

8. PIPE BENDING Fig.

This time, 1. HEMMING BENDING and 2. STEP BENDING are taken up, and the dedicated tool is proposed below.

1. HEMMING BENDING

1. HEMMING BENDING Fig.

This is a method of bending and crushing the edge of a work, mainly for securing product strength and for safety measures.
When processing with a standard tool, not only the sheet metal quality may not be stable, such as a step at the bent part,
but also two types of tools for bending and crushing are required.

PREVENTIVE PRODUCT
FEATHER HEMMING

The “Feather Hemming (Die)” tool exclusively for hemming bending can be processed with one type of hemming in two steps.
It supports from corner hemming to split hemming, and can be easily adjusted even in environments where the tonnage of hydraulic machines is not stable.

FEATHER HEMMING Fig. 1
FEATHER HEMMING Fig. 2 / 1st step / 2nd step

2. STEP BENDING

2. STEP BENDING Fig. 1

A method of processing a shape with steps, also called “Z-bending”.
For step bending, there is a method of performing V bending in two processes, but by using a dedicated tool, it can be processed in one process.

EXAMPLE OF 2-STEP BENDING

EXAMPLE OF 2-STEP BENDING e.g. 1
EXAMPLE OF 2-STEP BENDING e.g. 2

An example of two-step bending was given.
Using a standard tool has the advantage of being inexpensive,
but it tends to increase the number of processes and make the dimensions unstable. In addition,
experience is often required due to the difficulty in positioning the material.

PREVENTIVE PRODUCT
DANSAR

You can easily adjust the height of the steps simply by inserting a shim of the same thickness as the height of the steps.
Even when the tonnage of the hydraulic machine is not stable, adjustment is easy and dimensional accuracy is stable.

DANSAR Fig. 1
DANSAR Fig. 2
  • *Please contact us in advance as some countries may not be available for sale.

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vol.12 TYPES OF BENDING SHAPES
(HEMMING BENDING, STEP BENDING)(555KB)