TPT March 2025

TECHNOLOGY

Semi-automatic bandsaw allows complete tube cutting cycle

which turns with the blade, guaranteeing excellent support for the material that is to be cut. This system prevents the blade from cutting the working table as is the case with some conventional bandsaws. A very large cast iron vice with handwheel and quick locking lever help to achieve this. The vice is equipped with a practical handle for rapid movement and is mounted on a rail to allow lateral displacement. The bandsaw offers the possibility of cuts from 0° to 60° to the right and to 45° to the left. Blade tension by handwheel and analogical pressure transducer is visualised on the display for the operator. The machine automatically stops in case of blade breakage or insufficient tension of the blade. The digital controller offers three different operating functions: • Semi-automatic cutting cycle: manual vice adjustment through handwheel – semi-automatic start through pedal switch or control panel switch – the

Bültmann tube testing lines for monitoring quality THE reliable recording and permanent monitoring of quality characteristics are an increasing challenge. This applies both to non-destructive testing units for tubes and bars in the eddy current and ultrasonic fields as well as to geometry, straightness and surface testing. Specially tailored Bültmann testing technology can be supplied, either with mechanical handling equipment com- bined with customer-supplied testing electronics or with Bültmann in-house developed measuring and testing units. Both stand-alone and connected in line systems are possible. The machine is practical and reliable for all the cutting needs of small and medium-sized ferrous materials. A large round working table “plateau” is used, THE semi-automated STHEMMA Srl bandsaw allows the user to make a complete cutting cycle without the constant presence of the operator through the original hydraulic control system for the descent of the saw frame. It also offers an infinitely variable blade speed through Inverter from 20 to 105m/min as well as analogic measurement of the starting position of the saw frame and blade tension. A limit switch is available to set the saw frame return just above the material to cut with a button for the rapid approach of the material to be cut. It features a centralised control panel at the front of the machine, including a luminous alarm system. It is automated and is controlled by safety relay. It also offers a highly efficiency hydraulic pump and low energy consumption for the customer.

machine carries out a complete cutting cycle including vice locking, sawframe downfeed, cut, sawframe return and vice opening. • Manual cutting cycle: manual vice adjustment through handwheel, material vice locking through switch key, sawband start through gripswitch, manual sawframe pull down and cut and material vice opening through switch key. The semi-automated bandsaw can perform a complete cutting cycle without the constant presence of the operator

STHEMMA Srl www.sthemma.com

The systems are connected to the corresponding production facilities and can also be interlinked with customer Level 2 systems in order to directly transmit and evaluate quality data online

testing systems; geometry measuring systems; surface measuring systems; straightness measuring system; and vibration measuring systems (developed in cooperation with an experienced partner). The focus is on practice-oriented solutions that also work reliably in industrial use under production conditions with corresponding ambient influences.

The systems are connected to the corresponding production facilities and can also be interlinked with customer Level 2 systems in order to directly transmit and evaluate quality data online in terms of Industry 4.0 requirements. The specialised department ‘Bültmann 4.0’ provides the developments for various measuring and testing technologies that can be used for different applications. The currently available (or soon to be available) technology includes: complete mechanics for non-destructive

Bültmann GmbH www.bueltmann.com

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MARCH 2025