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Customer application

Wiring Electrical Systems – Eliminate Maintenance and Save Time

Drilling holes precisely and at high speed – this is the essential requirement the CNC drilling machines from Schmoll Maschinen GmbH have to meet.

The machines produced by this mid-sized company are used globally in electronics manufacturing. Numerous electronic devices, from smartphones to flat screen TVs, contain PCBs that were manufactured using this equipment. When wiring the electrical systems, Schmoll relies on TOPJOB^® S Rail-Mount Terminal Blocks with push-in spring pressure connection technology from WAGO.

The Benefits of WAGO for You:

The right actuation variant of WAGO’s preassembled TOPJOB® S Rail-Mount Terminal Blocks is available for any application
Reliable, easy, intuitive handling with Push-in CAGE CLAMP®
The WAGO Smart Printer prints marking strips in seconds

The Victory of Electronics

Since the first transistor was developed in 1948, electronics conquered many domains of technology. The foundation of most electronic devices is printed circuit boards, on which the circuits are produced using photochemical methods. Fast and precise CNC drilling machines are used to create the holes for through contacts in the PCBs. Schmoll Maschinen GmbH, which offers CNC drilling machines like the Speedmaster HDI, is among the leading global manufacturers of such equipment.

This mid-sized company has its headquarters in Rödermark, near Frankfurt am Main, employs around 200 employees and manufactures up to 600 machines per year. “The primary market segment for our equipment is in Asia,” explains Markus Winterschladen, executive assistant at Schmoll, “which is why an additional 200 employees work in Asia in the sales and services subsidiaries,“ The CNC machines are available with different features and up to six stations, which process the printed circuit boards simultaneously during operation.

300,000 Revolutions per Minute

The constant drive for miniaturization in electronics has also increased the demands placed on the machines. They have to drill both quickly and with high precision. In addition, they have to compensate for any unevenness present in the PCBs. “The spindles rotate at up to 300,000 rpms,” says Winterschladen, “and drill not only quickly, but extremely precisely as well.” The smallest holes that can be made using the machines have a diameter of a mere 30 µm, with a precision better than 2 µm.

Optimized Manufacturing in Machine Building

Schmoll competes primarily with machine designers from Asia. “One reason that the company is competitive is that the design is constantly being optimized for maximum production efficiency.”According to Winterschladen, “A standard machine passes through our facility in around nine to ten days.” This short manufacturing time can only be achieved through the modularization of equipment design and the use of preassembled components. Following delivery, the machine bed, which is made from granite, has to be tempered for one day. The mechanical system of the machine is constructed before the employees begin wiring all of the components. The power supplies and all signals are connected using rail-mount terminal blocks.

The ready-made electronics components are delivered from an external vendor. “These modules form the core of our machines,” explains Torsten Thom, head of the electrical workshop at Schmoll. Due to the modular structure, each machine has similar electronic components. “The exact configuration of the machine is carried out through the wiring,” says Thom. The conductors, which are also delivered ready-made, are marked and color-coded. This makes wiring very easy, and it can be carried out with corresponding speed.