Wire Erosion – Impeller Splining
Project Name: Wire Erosion – Impeller Splining
Industry Sector: Mining, Dredging etc (Slurry Collection)
Type of Work: Wire Erosion
Cheshire Wire Erosion was approached by a client who wanted us to create some impellers with the splines. Part of the task required us to create large quantities of impellers which our client needed quite quickly.
An impeller is a rotor that is part of a centrifugal pump. The impeller transfers energy from the motor that works the pump to the fluid being pumped. The impeller increases the pressure and flow of the fluid. It accelerates the fluid outwards from the centre of rotation.
Each impeller can have an impeller spline. These are gear like teeth which are located Inside the impeller, where the drive shaft fits into. This particular project involved impeller splining in order to create the impellers with the splines. Our clients required a critical surface finish.
Work Carried Out:
For this project, we used two of our “wire” machines to complete the task, the AG 600L and the AG 600LH. These EDM machines feature rigid linear motors that maximise cutting, ensuring accuracy and precision engineering. This means that when a client has exacting specifications our machines can meet them.
For this project 3 cuts were needed in order to achieve the critical surface finish that was required. The first cut removed the waste piece as can be seen in one of the photographs. The secondary and tertiary cuts improved the accuracy of both the cut and surface finish, due to the required fit between the male and female parts.
Because of the “wire” machines we use, this same process can be repeated over and over again. In this instance this meant that an impeller could be created as many times as was needed so there was very good repeatability in size etc. Our clients were extremely pleased with the results. It also means that if an impeller is needed again this process can be replicated easily and efficiently.