Machine tools

Machine tools accomplish diverse processes in the metal working industry, e.g. turning, milling, grinding, and punching. Every second counts, especially in large batch production: the productivity is a highly crucial factor to determine the competitive advantages of a machine tool.

As machinery safety is regarded, this means that the safety guards must not affect or interfere with the productivity. Schmersal develops powerful safety systems for the machine tool construction in accordance with this principle for many decennia already.

Core target: avoid tampering

According to studies, the tampering of the safety devices installed on machinery however is unfortunately standard practice in one-third of the metal-working companies. This risk can be minimized in a simple manner by means of coded safety switches and safety sensors as well as hinge safety switches.

Interruptions unwanted

Interruptions of the production process are unwanted, and not just because of productivity reasons. When the operator opens the safety guard of a boring mill, thus interrupting the process, both the drill bit and the workpiece can be damaged.

This explains the above-average use of solenoid interlocks in machine tools. These devices keep the safety guard closed as long as the process is running. For these applications, Schmersal offers an extremely comprehensive range of products for various requirements - ranging from a compact solenoid interlock for small safety guards to a three-point interlock for very large safety guards and a modular system for protection walkable hazardous areas.

Safety in any operating mode

Studies demonstrate that an excessive amount of accidents on machinery and plants occurs during set-up and maintenance. This can be prevented by implementing special safety measures for these tasks. For instance by special operating modes such as set-up mode and process observation, which are described in the new Machinery Directive (2006/42/EC). The Schmersal program includes enabling switches to put these operating modes into practice.

Fast diagnosis minimizes downtime

It is recommended to use the "AS Interface Safety at Work" standard for the transmission of safety-related signals. In this case, the user benefits from considerably reduced installation efforts and overheads as well as enhanced diagnostic possibilities - features, which minimize possible downtimes. The Schmersal Group offers a comprehensive program of safety switchgear with integrated ASi Safety interface.

Transparency during operation and observation

Ergonomics is another important aspect of safety at the man-machine interface. After all, a machine with directly accessible operating elements enabling an intuitive operation runs safer. The Schmersal Group is convinced of that. That is why the program includes for instance the operating panels of the BDF series, which can be directly installed onto conventional profile systems. By means of the command and signaling devices of the R series, complete operating panels can be configured.

Safety at the man-machine interface

Wherever man and machine must collaborate, special safety measures are required. This applies for instance to the feed and withdrawal areas on presses - here, optoelectronic safety devices are used. Schmersal has been involved in developing custom-made solutions which enable a safe collaboration between man and robot without a separating protective fence for more than ten years already.

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