The calculation and simulation of the flow behavior of liquids and gas mixtures necessary for pump design has been complex and error-prone since time immemorial. Even in simple systems, it is difficult to make statements about the real-world behavior based on the theoretical models, and this requires many years of experience and expertise. It is exactly these key skills, coupled with a very high capacity for innovation, that has enabled Speck Pumpen to maintain a leading position on the liquid and vacuum pump market for decades.
With each new design, the manufacturer approaches theory and practice on parallel paths. Using complex simulation software, initial ideas for a new pump first undergo a theoretical check, and the result is a preliminary constructional sketch in the CAD system. Following these guidelines, a prototype is built to perform the first function tests.
Based on these conditions, Speck Pumpen wanted to install a process chain to optimize its development process. The problem with the existing process was due to the different CAD systems in prototyping and manufacturing and construction. This made the data exchange between the systems and the joint work with identical design data more difficult.
The aim was therefore to use the new solution to create the NC programs directly from the shared CAD data of the constructional sketch. To do so, a common CAD system had to be introduced in the existing process and connected to the existing Mastercam CAM system. An adapted SINUMERIK postprocessor should generate the NC programs from the CAM data to produce the first functional models.
Another concern was to adapt the geometry of the pump components to the production process without affecting their function. The cast blanks for the pumps are generally prefabricated at an external site, but require a series of mechanical alterations to the casing and impeller before the pump is finally finished. These downstream work steps should already be optimized in the design. The production preparation is therefore already included during the first stages of development to avoid obstacles in the subsequent production and to account for economic considerations.