June 21, 2024


A Passion for Better Health

Zero-point clamping brings a smile to dental output

Headquartered in Austria, Amann Girrbach manufactures progressive equipment to develop not only dental prostheses such as abutments, crowns, veneers and bridges, but also dentures.

In its newest manufacturing procedure, the Ceramill Matik, the business has launched a zero-issue clamping procedure from Roemheld Group firm Stark Spannsysteme. It ensures increased repeatability when positioning uncooked content for 5-axis milling of the advanced profiles that characterise the prostheses. The workholding solutions are out there in the Britain and Ireland by Roemheld Uk in Hitchin.

Meant for extended periods of unattended creation right away and at weekends, the new device is an clever remedy that brings together a few operations in 1 – milling at up to 100,000rpm, cleansing and automated storage.

The modified Stark.essential.S Pneumatic zero-place clamping method equipped to Amann Girrbach for the Ceramill Matik

Marcel Humml, senior supervisor operational excellence liable for R&D describes: “The Ceramill Matik incorporates a 5-axis machining centre with a 36-workpiece changer, whilst other items on the current market have a greatest of 12 workpiece positions and are substantially additional costly.”

He adds that the company’s aim was to deliver elevated effectiveness to the dental laboratory. To make this operate, a method was required that could autonomously and persistently tackle tools with radio frequency ID (RFID) from a 27-situation magazine, as nicely as retail outlet and manage assorted workpiece resources such as metals, polymers, zirconium dioxide and ceramics. Correct site of the substance blanks, every of which also has a readable RFID chip, prior to machining is only doable if a zero-stage system is utilized.

A material holder in the Ceramill Matik being located accurately in the Stark zero-point clamping system
A substance holder in the Ceramill Matik getting located properly in the Stark zero-issue clamping process

Michael Netzer from Stark Spannsysteme’s technical product sales office helped to draw up a specification sheet for Amann Girrbach with essential parameters such as workpiece size, clamping power and essential repeatability of positioning. Analysis showed that the ideal zero-stage clamping program would be a Stark.fundamental.S Pneumatic. A 7 days later, Mr Netzer delivered a person to the company.

It is properly suited to the application owing to its higher-high-quality, stainless software steel building and compact, modular, servicing-welcoming design and style. Spring drive clamping with pneumatic launch provides failsafe workholding. Positioning is very simple and reputable by way of an integrated recess in the Stark.standard.S and a corresponding locator in the holder.

Up to 36 workpieces may be held in the material magazine, allowing extended periods of unattended machining
Up to 36 workpieces may be held in the product journal, permitting prolonged durations of unattended machining

Considering the fact that cleaning was a higher precedence in this application, the final decision was taken to use a zero-stage variant with blow-off, an prolonged nozzle guaranteeing productive elimination of debris. The cylindrical recess consequently continues to be totally free from swarf and due to ideal application of clamping force, no flexing or lifting is feasible and high positioning precision is guaranteed.

Mr Humml carries on: “When tests the Stark zero-place method, we concluded that we would like to have a couple of modifications. We did not want any noticeable screws and we desired the sides to be uncovered so that drinking water and dust could operate off improved.

“Thanks to our compact holder measurement, we also asked for a smaller guidance area to help you save house. All of these modifications were being duly designed by Stark in the customised remedy they provide to us. The cooperation with Stark through the improvement section of Ceramill Matik was unbeatable – the romantic relationship really couldn’t have been better.”

Typical dental prostheses produced in a Ceramill Matik
Standard dental prostheses created in a Ceramill Matik

Mr Netzer concludes: “Our zero-place solution was built for steel machining on a manufacturing unit floor and was not initially intended for a modest generation centre developing wonderful, sensitive parts. Having said that we had been happy to make the important variations to assist automation in the dental sector.”