Salient_Characteristics_Tube_Bender_7_Sep_19.pdf

CNC Tube bender Salient Characteristics 7 September 2019

Eaton Leonard Model VB42 or equal:

The machine and safety perimeter shall fit within the following dimensions 17’ Long x 9’ Wide x 8’ High otherwise it will not fit in the required area.

The tube bender shall be electric

The tube bender shall have an accuracy at a minimum of +/- 0.050

The tube bender shall be capable of bending angle up to and including 1950

The tube bender shall be capable of bending tubes up to and including 2.00” capacity.

A three axes all electric rotary draw CNC bending machine for up to 42mm (1.50”) / 50mm (2.0”) diameters. Capable of bending 50 x 2.1 mm Mild Steel and 45 x 2.1 mm Stainless Steel.

The machine should be able to accommodate line stock lengths up to 6'6". A machine that has all axes that are electric servo-driven. An all-electric position-controlled pressure die that has a compact low interference bend arm to provide maximum clearance for intricate parts is a must have. Programmable pressure die adjustment and a position controlled pressure die assist to increase bending quality while decreasing machine setup times. The bender should have the capability for single or multi stack tooling and pneumatic tube support, a low noise level and a proximity laser safety scanner.

The bender should incorporate a simple centerline radius adjustment where the bend head is attached to the machine base by precision slides. The entire head assembly should be positioned horizontally, simplifying setup changes and CLR (center line radius) adjustments. This should make it easy to view the relative tooling position while positioning the head.

Additionally, the bend head should have a small profile to aid in the bending of intricate parts.

The bender should allow for right or left hand bending by reversing the stationary arm assembly and is a must have requirement based on the tight tube distances incorporated on the aircraft. The bender should have a link driven bend arm system, as opposed to a chain-driven arm system, which will help to eliminate moving parts within the bend head, thus reducing maintenance while helping to ensure reliability and serviceability.

The CNC bender will require a graphical user interface bend controller in order to program bend data and for 3-D graphic rendering of the part shape, network communications, production control status reports and customized sequence modifications for simplified setup and part programming features such as edit reverse, test bend, springback calculation and storage of all tooling and machine information. The bending software should have a memory file storage for thousands of part numbers to reduce set-up times. The bending interface should be touchscreen and keyboard input as well, utilizing open architecture and PC-based design that uses commercially available hardware to ensure maximum reliability and serviceability.

Additional tooling is required to provide full functionality which includes: pressure dies, following dies and mandrels for tubing with an outside diameter of 1.25" Ti with a wall thickness of .065" Ti at a bending radius of 3.75".the bender should have a mandrel bending package with a programmable tangent adjust that allows the use of mandrel tooling to support the inside of the tube during bending and an electric servo adjustment to help reduce ovality, prevent wrinkling and produce smooth, round bends. Unit should have a high torque package that provides additional bending torque for tube up to 2.0" OD. Unit should also have a remote start footswitch to be used to initiate machine cycles in addition to the standard console cycle start button, a collet control footswitch that is used to control only the machine collet operation, allowing for loading & unloading of tubes while in the machine safety zone, and machine mounts for machine support and leveling.

Provide installation and training on day of installation of the machine.

Provide manufacture’s standard warranty.