The Useful CNC Pipe Bender

Posted on Sep 25, 2020

The Useful CNC Pipe Bender

CNC pipe bender machines offer users a number of benefits that increase productivity, speed and accuracy. There is a wide range of applications for these machines...


CNC Pipe Bender Applications

CNC pipe bender machines offer users a number of benefits that increase productivity, speed and accuracy. Due to the many advantages of CNC pipe bender machines, there is a wide range of applications for these machines.


Precision And Consistency

The two greatest advantages of CNC pipe bender machines are precision and repeatability. CNC pipe bender machines are able to control bend angles, complex bending formulas and tool specifications, allowing them to create consistent precision bends. These types of bends are often found in automotive applications.

In fact, some of the most popular CNC pipe bender machines revolve around bending in the automotive industry. The fuel lines and exhaust system components in particular benefit greatly from the large volume, precise and smooth bends. It is no wonder then that these machines are used so often for such applications.

Other automotive applications include internal components and piping systems found in cars, motorcycles, trucks, and buses. Often times, support benders are used for larger components to ensure accurate bending without breaking.



Over time, it is becoming more and more common to use complex arcs as the standard. In all industries, the demand for complex arcs has never been greater. CNC pipe bender machines are often the best solution for operations that must meet these requirements.

CNC pipe benders allow manufacturers to quickly and efficiently set up tooling, perform calculations, and meet customer requirements for custom orders.


CNC Pipe Bender Applications

CNC pipe bender machines can be used to bend a wide variety of applications. We've covered some automotive applications already, but there are many uses and uses for CNC pipe bender machines, including:

  • Shipbuilding
  • Car transport
  • Rippling industry
  • Production equipment
  • Consumer goods (e.g. exercise equipment and furniture)

This is just a small sample of the CNC pipe bender!

Ubiquitous bending is any metal forming process used to form tubes or pipes permanently. Tube bending can be shape-related or any shape bending procedure, and it can also use hot or cold forming procedures.

Mold-related bending procedures such as "press bending" or "rotary pull bending" are used to shape the workpiece into a die. Straight tubes can be formed with a bending machine to create a variety of single or multiple bends and give the item the desired form. These processes can be used to form complex shapes from various types of ductile metal tubes. Free-bending processes, such as three-roll bending, kinematically shape the workpiece so that the bending contour is not dependent on the tool geometry.

Overall round stock is used in tube bending. However, square and rectangular tubes and pipes may also be bent to meet job specifications. Other factors involved in the bending process are the wall thickness, tooling and lubricants needed by the pipe and tube bender to best shape the material, and the different ways the tube may be used (tube, pipe wires).

A tube can be bent in multiple directions and angles. Common simple bends consist of forming elbows, which are bends, and U-bends, which are 180° bends. More complex geometries include multiple two-dimensional (2D) bends and three-dimensional (3D) bends. A 2D tube has the openings on the same plane; a 3D has openings on different planes.

A two plane bend or compound bend is defined as a compound bend that has a bend in the plan view and a bend in the elevation. When calculating a two plane bend, one must know the bend angle and rotation (dihedral angle).

One of the side effects of bending a workpiece is wall thickness variation; the wall along the inner radius of the tube becomes thicker and the outer wall becomes thinner. To reduce this, the pipe may be internally or externally supported to maintain the cross-section. Depending on the bending angle, wall thickness and bending process, the inside of the wall may wrinkle.


:: Read more : Let’s Talk About The Different Types of CNC Pipe Bending Machines


The pipe bending process begins with loading the pipe into a tube or pipe bender and securing it in place between two dies, a clamping block and a forming die. The tube is also loosely held by two other dies, the wiper and the pinch die.

The process of bending pipes involves using a mechanical force to push the pipe or tube from the stock material onto the die, forcing the pipe or tube to fit. to the shape of the die. Often the tube is held firmly in place as the end is rotated and wrapped around the die. Other forms of processing, including forcing the material through rollers that bend it into a straight curve. In some pipe bending processes, a mandrel is placed inside the pipe to prevent it from collapsing. The tube is tensioned by the squeegee to prevent kinks when tensioned. The doormat is usually made of a softer alloy such as aluminum or brass to avoid scratching or damaging the material being bent.

Much of the tooling is made of hardened steel or tool steel to maintain and extend the life of the tool. However, when there is concern about scratching or gouging the workpiece, a softer material such as aluminum or bronze is used. For example, a clamp block, swivel block, and pressure die are often molded from hardened steel as the pipe is not moving past these parts of the machine. The pressure die and the wiping die are formed from aluminum or bronze to maintain the shape and surface of the work piece as it slides by.

Tube benders are typically human powered, air driven, hydraulically assisted, hydraulically driven or with an electric servo motor.


Pipe Bending Applications

Bending pipes and tubing is essential in many different industries. some's applications for tube and pipe bending are used in everything from the automotive industry to shipbuilding, aviation, aviation and many more. The automotive industry relies on mandrel benders to minimize the ovality that occurs on thin walled tubes when bent. Our bending machines also help to eliminate wrinkles on the inside bend radius.

Two other industries that rely heavily on the bending of the highest quality tubing are aviation and aerospace. In these industries, bends must be precise and there is no room for error. Some tube benders help these industries achieve exceptionally accurate bends. This is especially important in aviation for making bends with the highest accuracy. Our benders are perfect for the industrial bending of pipes, tubing, square and rectangular profiles. Our mandrel benders can bend profiles down to a centerline radius as small as 1.5 x the diameter.


Check Out These Featured Bending Applications

Some mandrel and mandrel benders have proven themselves in many industries. No matter what tube, pipe or profile bending you want to produce, some creates a bending machine that will meet your goals and exceed your expectations.

Here are some recommended tube bending applications:

  • Automotive
  • Advertising vehicles
  • Shipbuilding
  • Architectural
  • Industrial
  • Aviation and cosmonautics
  • Other industries

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