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• What was needed: Lubrication-free lead screw axes and matching stepper motors
• Requirements: Robust components that function even under high temperatures and potential contamination. All components should also be free of external lubrication.
• Industry: food industry
• Success for the customer: Our lubrication-free lead screw axes in combination with the motor provide a turnkey solution.

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Problem

Components within a coffee machine have to withstand various challenges every day. For this reason, the CIME company was looking for robust solutions for a new espresso machine. The requirements were very varied: on the one hand, high temperatures arise in a coffee machine due to the heating of the water, and on the other hand, water, coffee or coffee powder are also expected to come into contact with the individual parts and contaminate them. Therefore, all possible solutions involving the use of lubrication were excluded.

Another special feature is that it is not a normal coffee machine, but a state-of-the-art espresso machine with electrical adjustment. The collecting area on which the espresso cups stand should be adjusted automatically. For this reason, sliding ability is also a crucial criterion. Furthermore, the parts should be as maintenance-free as possible.

Solution

With the help of igus® components, CIME developed an electrical adjustment system for the espresso machine that could meet all requirements. The system developed includes the use of two drylin® linear guides SLW-0630 and two stepper motors that work synchronously.

The movement is transmitted via pulleys and belt connections. There are also two micro-switches for upper and lower limit switches. An ad hoc software was developed that enables height adjustment via a touchscreen. The user can choose between an automatic setting and a manual setting.

The selected products do not require the use of external lubrication and are therefore not only maintenance-free, but also insensitive to contamination.

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Lead screw drive or toothed belt? How to find the right linear module