A pipe bender is a tool used to change the shape of a pipe, typically metal or plastic pipes, by applying force to bend it into a desired angle or curve. It can range from simple handheld devices to large, industrial - grade machines. The main purpose is to manipulate the pipe's form without causing damage such as kinking or cracking, ensuring a smooth and accurate bend that meets specific requirements for various applications like plumbing, construction, and manufacturing.
The history of pipe benders dates back to the early days of metalworking and construction. As the need for piping systems grew, so did the methods for shaping pipes. Initially, simple manual techniques were used, such as using levers and anvils to gradually bend pipes. With the industrial revolution and the development of more advanced machinery, mechanical pipe benders were invented. These early machines were powered by steam or hydraulic systems and were able to handle larger and thicker pipes more efficiently. Over time, modern pipe benders have incorporated advanced technologies such as computer - controlled bending mechanisms and improved materials for greater precision and ease of use.
Most pipe benders operate on the principle of applying a controlled force to the pipe to cause it to deform plastically. In a manual pipe bender, a lever or a screw mechanism is used to apply pressure to a form or die that surrounds the pipe. As the force is increased, the pipe gradually takes the shape of the form. In hydraulic pipe benders, hydraulic cylinders generate the force. The pressure is evenly distributed around the pipe to ensure a smooth bend. The angle of the bend is usually controlled by a gauge or a mechanical stop that limits the movement of the bending mechanism.