SAHINLER HPK 665, Руководство пользователя

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15
BENDING OPERATIONS
NORMAL BENDING OPERATIONS
You can feed the material to the machine from both sides. Use the digitalis to adjust the rolls.
Also adjust the guide rollers to achieve a better accuracy and better finish.
To give an idea on a simple bending following steps can be taken. Please note that you will
get better quality from the machine with experience.
IMPORTANT
If the material to between three is long we recommend a material support/feed unit for higher
accuracy. One feeder/support in each 2 meters should be sufficient.

Place the material between the three rolls on such a position that the material will be parallel to the
ground and touching all three rolls at the same time. This position is called zero position.

Both bottom rolls must be equally away from the top roll. This rule is applied the same for the
machine in Vertical Position (figures 1 and 2)
.

Raise one of the rolls depending on the direction of the rolling. And start turning the rolls and when
the end of the material reaches between all three rolls raise the other roll and bend in the opposite
direction.

By following the above step you can bend until it reaches the diameter required.

With the optional equipment of Digital read-outs you can always know the exact position of the
rollsj
SPIRAL(HELIX) BENDING
It is rather difficult to make spiral bending and needs experience. The following steps can be
taken to start with;
.

Arrange the rolls in a position so that they are 3-4 % smaller than the required diameter (Figure 4)

The guide roller A (figure 5) must be adjusted until the required diameter

For full diameter bending cut the material as
π
times the diameter. Remember to leave
necessary cut of length. Where at the and of bend two flat parts meet cut of the flat parts and
bend until the edges meet.

In tight spirals where the edge tends to go inside the spiral use a lever to overcome this tendency
(Figure 3)

On arc bending use the guide roll A (figure 5) to obtain the necessary finish arc. If you are bending
a pipe the roller A needs to be replaced with a pipe roller also.
FIGURE 1 FIGURE 2