Laboratory for machine elements



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Interesting techniques

Gearbox disassembly exercise

As an introduction to the topic of machine elements, the first of the two individual exercises is the gearbox assembly exercise. The gearbox of Getriebebau NORD GmbH & Co. KG is used and it is a three-stage spur gear with helical gearing. This design is intended for flange mounting on an engine, which allows for a compact size. In contrast to the steel version, the light aluminium housing is weight-saving and thus particularly preferable for co-moving drives (e.g. in conveying and handling technology).

Chainsaw assembly exercise

The second of the two individual exercises is more demanding than the gearbox assembly exercise and is therefore only carried out after the first exercise has been completed. The chainsaw assembly exercise takes 60-120 minutes, so students should arrive on time and prepared for the exercise and allow some reserve time. The chainsaw is from Stihl and is called "STIHL MS 170". The task of the chainsaw assembly exercise is to disassemble and then assemble the chainsaw according to instructions. Due to the limited time of the laboratory exercise, only the main components and the combustion engine must be disassembled and the related components are to be dismantled.

 

 

Equipment

Different, partly changing objects for the assembly exercise:

  • Three-stage spur gears (gears, shafts, bearings, sleeves, etc.)
  • Chainsaws (main components and components of the combustion engine)
  • Bolting test bench (tightening torque, pretension, tear-off tests)

 

Impressions

The team

Research assistant

Non-Public Person

Teaching

The laboratory is embedded in the Institute IKME: www.ikme.wp.hs-hannover.de

In the laboratory, the students' technical understanding of machine elements is to be improved through "hands on" experiments. Many mechanical engineering students have little or no practical "tinkering" experience. Thus, they often lack the connection between theoretically imparted knowledge and the practical handling of tools, components, tolerances, etc. This gap is to be closed through practical assembly and disassembly experiments parallel to the lecture.