Automatic Tool Changers

Overview

The Automatic Tool Changer is incorporated into the design of the press brake or as a separate integrated module. While designs and functionality vary and are unique to individual manufacturers, ATC press brakes generally comprise the same basic elements.

This begins with a tool storage area, either contained within the machine footprint or attached externally, a motorised system that transfers the tools between the storage area and the machine tool holders and finally, a mechanism that sets the position and spacing of the tools along the length of the machine.

The automatic tool change process is managed by the CNC system in conjunction with the bend program.

The ATC first removes any punches and dies that are not needed for the next setup and returns them to the storage area. The ATC then identifies the next set of tools that are defined in the bend program and retrieves the required punches and dies from the storage area and inserts them into the tool holders, which would generally encompass a hydraulic or pneumatic tool clamping system.

The horizontal placement of the punches and dies along the length of the machine is adjusted, including any necessary spacing between tools that is needed for part production such as box bending, where the correct tool gaps are required to accommodate part side flanges.

Automated Workflow

Automated workflow also plays a significant part in streamlining production processes with networked machines that are more effectively managed from the office to further eliminate operator intervention in the workshop. A complete working shift of scheduled bend programs and tooling setups can be remotely transferred to the machine in advance so the next automatic tool change can commence as soon as the current job is finished.

Operator Safety

Press brake users are also looking to automatic tool change as a solution for reducing operator fatigue and improving safety to minimise the risk of both short and long-term injuries. Many machines use heavy sections of tooling that require manual lifting by the operator or the use of lifting aids such as hoists to transfer tools to and from the machine. Injuries can result from lifting strain, or the tools being dropped and there are possible long-term health implications from repeated lifting of heavy tooling over the course of many years.