Understanding bandsaw down-feed systems

When delving into the world of bandsaw machinery, a fundamental aspect to grasp is the relationship between the saw bow’s descent speed, the applied pressure and the resistance offered by the workpiece. This understanding is crucial for optimal operation and precise cutting, as a guide produced by Saws UK sets out.

Investing in a high-end bandsaw brings notable advantages, especially with sophisticated down-feed systems designed to fully harness the capabilities of the latest bi-metal and carbide-tipped blades. These enhancements substantially boost productivity. 

Down-feed regulation systems in bandsaws vary significantly. Some are straightforward, featuring an adjustable hydraulic valve in the guide system that responds to material resistance. More advanced systems include load detection on the blade drive motor, integrating an interface with a proportional down-feed valve in the hydraulics. Additionally, some machines employ a ball screw system connected to the interface for down-feed control. 

A pivotal feature in some bandsaws is blade deflection detection. This technology automatically slows the down feed to prevent crooked cuts when the blade begins to dull towards the end of its lifespan. 

Modern control systems often include a material directory, enabling operators to set reasonable down-feed rates based on workpiece size. However, this requires accurate data input and may not account for the annealed state of the material, where load detection systems can provide additional guidance during challenging cuts. 

The question arises: can a company justify spending up to £100,000 more for a bandsaw that fundamentally performs the same task? The answer lies in evaluating several factors, including expected service life, precision of cut, ease of use and speed of cut. Saws UK can provide advice in line with customer-specific applications.

More information www.sawsuk.com

How to maximise efficiency with cold saws

Cold saws are essential tools for numerous businesses needing clean, burr-free cuts on various metals. They also find widespread use in general fabrication and machine shops, as well as in structural steel fabrication, HVAC, automotive repair and shipbuilding. Cold saws offer a dependable and efficient method for cutting different solid and hollow metal sections. Dimakin offers a guide (tips and tricks) for improving the performance of cold saws.

It is important to consider the blade tooth count relative to the workpiece material. For example, if using too fine a blade for soft materials, the blade’s gullets will quickly clog, eliminating the machine’s ability to cut effectively.

For those likely to cut multiple materials or profiles over the machine’s lifetime, it might be worth considering a cold saw with the ability to vary speeds. Cold saws such as the CS-350-DM are ideal with their speed inverter dial, allowing infinite adjustment between 24 and 120 rpm. Another tip is to use the coolant system during operation. Coolant lubricates the blade, reduces heat build-up, improves cut quality and extends blade life.

A further important factor in cutting is clamping. Without securing material tightly, no blade will ever be able to achieve a good quality cut. Regular blade sharpening is a further contributor to optimal cutting performance. Dimakin not only offers brand new blades, but a blade resharpening service tool. Last but not least, it is important to maintain a clean a clean work area in and around the cold saw for cut quality. Regularly remove metal chips and debris to prevent them from hindering the cutting process or damaging the saw.

Dimakin offers a comprehensive line of cold saws, from basic single-speed models to feature-packed inverter-driven options with variable speeds.

More information www.dimakin.co.uk

Plans for landmark machining plant

Sheffield Forgemasters has submitted a planning application for a landmark 30,000 m²machining facility on brownfield land in Sheffield’s Meadowhall district. Located on a 16-acre plot at Weedon Street, the new facility will form one of the world’s most advanced large machining facilities, supporting the company’s manufacture for the UK defence programme.

With work on the site planned to start in Q4 2024, the building will cover a space equal to 12 Olympic-sized swimming pools and contain 17 new machines, including some of the largest and most advanced five-axis vertical turning lathes (VTLs). Gareth Barker, COO, says: “The planning application covers an ambitious new project to create a facility that will deliver some of the world’s most advanced, large-scale machining capabilities.”

More information www.sheffieldforgemasters.com

Renishaw opens new technology centres

To help service its growing customer base in India and Japan, UK-based Renishaw has recently opened two state-of-the-art technology centres: one in Chennai, India, and one in Nagoya, Japan. These upgraded facilities will strengthen Renishaw’s presence in both countries and improve customer access to the company’s engineering services and technologies.

Renishaw is continuing to invest in upgraded and new facilities to better support its customers. In addition to the facilities in India and Japan, within the past year the company has also opened new offices in Brazil and created its first subsidiary operation in the United Arab Emirates. The latter will serve the rapidly growing manufacturing and advanced engineering sectors in the Gulf Cooperation Council region and Egypt.

More information www.renishaw.com

Sustainable Materials Hub

The Manufacturing Technology Centre (MTC) has invested in a new hub for sustainable additive manufacturing (AM), thus opening avenues for research and development to support the design and manufacturing of net zero products with end-to-end circularity.  

The new hub features polymer and ceramic AM machines to manufacture net-zero products alongside material reprocessing equipment that recycles waste AM materials and parts into feedstocks. Notably, a new Carbon M3 machine will enable processing of high-performance polymers for net zero products in sectors including aerospace, defence, and energy.

More information www.the-mtc.org