Glossary of Terms
Below is a Glossary of Terms used on the Radius Benders website. We have tried to keep our descriptions short and to the point. If you have any suggestions on improving any of the Glossary of Terms, please do not hesitate to submit your suggestions via our contact form which can be found here.
|Anticipated Mandrel Retraction||A mandrel bending machine has a mandrel which goes up inside the tube/pipe during bending to stop the material from collapsing during bending. Anticipated mandrel retraction (AMR) is where the bending machine begins to withdraw the mandrel from the tube/pipe before the end of the bend to maintain a good quality bend. On some material when bending without AMR you can get an indentation in the tube/pipe at the end of the bend.|
|Bending||A metal forming process used to form tube and pipe into curves or radii. Bending of tube and pipe forms the material into curves at specific radii (determined by a former or die). Other types of material can be bent including angle, solid bar (square or round), flat bar, rectangular hollow sections (RHS) and square hollow sections (SHS).|
Bending material is a very different process to rolling material. Bending material will allow you to achieve much smaller radii (tighter curves) than those you can achieve in rolling. As a result, bending machines are very different in design and operation to a rolling machine.
Example: A 50.8mm (2") round tube can be bent using a 76.2mm (3") centre line radius, whereas the minimum rolling radius would be about 350mm centre line radius.
|Centre Line Radius (CLR)||The distance from the center of curvature, to the centre line of the tube or pipe, expressed as a measurement, usually in millimeters (mm)|
|CSM||Chiao Sheng Machinery Company Ltd (Taiwan) a leading manufacturer of bending machines and has machines all over the world in the aviation, automotive, ship building, furniture, health care, gym utilities, construction, boiler making, power generation, petrochemical, etc. industries. Radius Benders is proud to be the distributor for CSM machines in Australia and New Zealand.|
|Rolling||A metal forming process used to form tube and pipe into curves or radii. Rolling of tube and pipe forms the material into curves at specific radii to form arcs or rings. Other types of material can be rolled including angle, solid bar (square or round), flat bar, rectangular hollow sections (RHS) and square hollow sections (SHS).|
Rolling material is a very different process to bending material. Rolling material will result in larger radii than those you can achieve in bending. As a result, rolling machines are very different in design and operation to a bending machines.
|Single Axis||Some bending machines allow for three axis automation. A single axis bending machine will automate bending only i.e. it does not rotate or feed the tube/pipe.|
|Single Stack||Some bending machines allow for more than one die (former) which allows for more than one bending radius. A single stack bending machine will only allow for one die (former) or one bending radius per tooling setup.|