Clamping pipe bevelers

Pipe Clamping Methods: Manual, Semi-Automatic, and Automatic

When it comes to pipe bevelling machines, there are two main types of clamping methods: internal and external. In this article, we will focus on the internal clamping mechanism. Most BEVEL machines with internal clamping utilize three clamping jaws located in a tapered inner shaft with internal threads. These threads allow for the expansion of the clamping segments into the pipe. This clamping can be achieved either manually or automatically using compressed air.

Let's first explore the manual clamping system. The manual system is a common choice for many machines in our range. As shown in the video, it is manually operated by rotating a nut that turns the inner part of the shaft. This pushes the clamping segments outward until they firmly grip the pipe. With proper procedures followed, this system can self-center. Once the bevelling is complete, the machine needs to be unclamped in the reverse process. While it may sound a bit involved, both clamping and unclamping are done using a single nut. This method is suitable for most users for daily applications, especially when dealing with a small quantity of bevelled pipes or varying pipe diameters.

Semi-automatic and automatic clamping system

AAnother option is the use of a semi-automatic clamping system. This system can be applied to all sizes of bevelling machines with pneumatic motors up to 203 mm, such as LITEA, RAX, 4PACT, ENERGLIX, and SHAVEDGER. It operates similarly to manual clamping, securing the bevelling machine in the pipe. To unclamp, the process needs to be performed in the opposite direction. A faster alternative is the use of a self-clamping device. The self-clamping device expands the clamping segments with a single lever movement, achieving clamping in approximately 5 seconds. The same time is needed for unclamping. This system saves time. Only bevelling machines with pneumatic drive can be equipped with the clamping device, as the clamping segments are expanded by compressed air.

The fastest option is the automatic clamping system. This system is particularly suitable for a large quantity of pipes with the same diameter. Once set, the operator can simply perform repetitive operations using a pedal switch, significantly increasing the operation speed through automatic clamping, rotation, and bevelling. In this case, it is practical to hang the machine on a balancer, allowing for the completion of one operation (clamping + bevelling + unclamping) in less than a minute.