Tube bending background

Tube bending tools for CNC bending machines

We offer tube bending tools as complete kits* or rechangeable separate tools for CNC hydraulic and electric tube and pipe bending machines of main worldwide manufacturers from Italy, UK, USA, Germany, Taiwan etc. with the great experience for leading Italian tube bending machines manufacturers.
* Depends of the manufacturer and model. Without drawings for all machines we can offer mandrels and wiper-dies.

Our specialization is the tooling for draw tube bending process with the forming of tube radius according to the size of bending die with the use of mandrel tube and pipe bending machinery.
We have a possibility to offer the tube bending tooling from simple set for easy-bended tubes up to complicated solutions with the several levels of bending die (multi-stack), one- or multi-ball mandrels, special surfaces for short straight part and tight clamping, special profiled tooling etc.
All solutions are unique and we are offering the ability to project the tooling based on your necessities and request. We can follow any projects for production of tubes for automotive industry as well as thin tubes to make with inconel or titanium materials.

Different shapes: Tube bending tooling for standard round tubes, oval, square, rectangle and other forms.
Tube bending tools for CNC bending machines

Bending dies and bending rolls

Bending die is the main part to form the necessary radius for the tube and made according to the final radius to be obtained on the part. The front part of bending die is made as part of the clamp to hold the tube during the bending action of the machine.
Radius of bending is equal to the groove of bending die.
Execution of bending die depends of the machine type, force to be obtained to execute the bending process and the complexity to make the part.

We offer all type of bending dies you can need:
    Standard bending dies as single solid part
    Structural bending die with rechangeable clamping insert
    Micro serrated surface for extremely hard clamping of the tube which are normally use when the straight part to clamp the tube is too short
    Special shape in clamping insert or profiled
    Multi-level bending die with different radii to make several bends under one bending program
    Bending die with the flange
    Execution for right and left bending
    Rolls for push tube bending (thrust bending) for variable radius

Clamp

Clamp or front clamp, or clamp block is the main part to clamp the tube and hold it during the bending. Normally, the movement of the clamp which means the close and open the clamp is controlled by the axe of the machine. The holding of tube is very important because the sliding of tube during bend will deform the tube in improper way.

We offer all type of clamps you can need:
    Standard clamp
    Micro serrated surface for extremely hard clamping of the tube which are normally use when the straight part to clamp the tube is too short
    Special shape or profiled
    Multi-level bending clamp to make several bends under one bending program
    Execution for right and left bending

Pressure die / Guide

Pressure die or rear clamp, or guide is the rear part of the tooling to follow the tube during the bending process. Main purpose for the pressure die is to control the rear part of the tube and to eliminate tube deflection which is caused by the deformation during the bending process.

We offer all type of pressure dies you can need:
    Standard pressure die
    Multi-level pressure die to make several bends under one bending program

Mandrel

Mandrel is additional element of bending tooling which could not be used with the thick wall tubes, large bending radii or possibility to have corrugations or wrinkles on the area of the bending. Necessity to use or not to use mandrel based usually with the special table charts, recommendations of tube bending machine manufacturers and working experience. Mandrels could be very different depends of the type of tube bending - from solid mandrel which could be even plastic up to multi-ball complicated mandrel for the complicated bends. Normally, the movement of the mandrel which means the presence at the area of bending is controlled by the axe of the machine. We are able to supply mandrels for any mandrel tube bending machine according to the customer needs and material of the tube to be bent.

We offer all type of mandrels you can need:
    Standard mandrel as solid part
    Different materials of mandrel depends of the tube material (steel or bronze)
    One-ball or multi-ball mandrel
    Special mandrel solutions for thin walls
    Special bending mandrels for rectangle, oval and square tubes

Collet

Collet is the interchangeable part for the carriage of tube bending machine to perform the fixation (clamping) of the tube for the feed and movement towards to the bending tools area. Normally the fixation of the tube is pneumatic according to the possibilities of the machine. We are able to supply standard or special collets according to the customer needs.

Wiper die

Wiper-die is additional element of bending tooling which could not be used with the thick wall tubes, large bending radii or possibility to have corrugations or wrinkles on the area of the bending. Necessity to use or not to use wiper-die based usually with the special table charts, recommendations of tube bending machine manufacturers and working experience. Main purpose for the wiper-die is to eliminate improper deformation inside the bending are to protect the tube from the corrugations or wrinkles. Wiper-die needs to be assembled right to the bending die to make the surface of tooling as one piece. Holder of wiper-die is the additional element of tube bending machine and could be used only if the machine has this option installed.

Attention: All the brands, machines, manufacturers and trademarks are used only for the information, are not connected with PRECITOOLS and are property of their respected owners.