Design services with over 15 years of experience
Our strength lies in the combination of modern engineering expertise and extensive experience in machine design and construction. We leverage cutting-edge technology and the latest software in our operations. We provide services ranging from simple modeling and technical drawings to more complex and challenging projects.
Design projects from various fields
We have executed mechanical design projects in areas such as pulp and chemical industries, electric motor and turbo machinery projects, excavator industry, machine shops, and educational institutions.
We carry out all stages of product development as needed, from preliminary design to detailed design, manufacturing drawings, and all the way to building and testing prototypes in collaboration with manufacturing. We offer both fixed-price project packages and design subcontracting based on hourly billing.
Our main design software is Autodesk Inventor Professional, and for product data management, we use Vault Professional PDM. We also have several other Autodesk programs at our disposal. We aim to be flexible according to customer needs and also perform design work using other software such as Solidworks.
In addition to 3D models and technical drawings, we produce technical documents such as user manuals, maintenance guides, and safety regulations. We prepare the necessary documentation for CE marking of equipment. We support our customers in identifying hazards and conducting risk assessments in compliance with machinery directives.
Pulp, Paper, and Chemical industries
We have completed hundreds of design projects for pulp, paper, and chemical industries. Our largest client is Andritz Oy, a supplier of pulp mills, for whom we provide design modifications for various machinery, equipment, and structures related to the pulp manufacturing process. The equipment often includes large-scale digesters, washers, tanks, and unloaders.
Some of our other clients in the pulp and chemical industries include Veolia Aquaflow Oy and Yara. We execute similar kinds of projects for them as we do for Andritz. These projects often involve structural analysis and laser scanning of existing equipment for initial assessment.
Electric motors and turbomachinery
In addition to the pulp and chemical industries, our expertise lies in electric motors and rotating high-speed machines, namely turbo machinery. We have designed various electric motors, generators, and centrifugal compressors. We possess experience and understanding in rotor dynamics, as well as technical calculations and design of components such as bearings, impellers, volutes, cooling solutions, seals, and flow dynamics.
We have conducted mechanical design for projects such as Lappeenranta University's electric motor product development initiatives and Apugenius innovative turbogenerator based on a turbine-compressor. Additionally, we have undertaken various small-scale design, structural analysis, and scanning projects for companies in Lappeenranta working with high-speed machines.
Prototypes and product development projects.
We are known for our innovativeness. Throughout our history, we have delivered various prototypes to clients in industries such as construction, pulp and paper, chemical, and composite industries.
We deliver machinery compliant with the Machinery Directive, either CE marked or assist our clients in meeting the obligations according to CE requirements.
We produce illustrations for our clients for patent applications, financiers, or marketing purposes.
Spline dimensioning
We have carried out numerous spline and serration dimensioning projects for various applications. We design and dimension splined shafts and hubs in accordance with the DIN 5480 standard, taking into account loads, manufacturability, tolerances and compatibility with mating components already at the design stage.
We have the tools and expertise required to define spline geometry, specify tolerances and verify the dimensioning. We provide support for both individual connection designs and the development of larger power transmission solutions whenever reliable, standards-compliant spline expertise is needed.
Sheet metal flat patterns
We have carried out numerous flat pattern developments for a wide range of structural sheet metal components. In addition to the sheet metal modules included in common CAD design software, we also use AutoPol, which enables us to create flat patterns for components that are not conventionally developable, such as screw conveyor flights.
We typically deliver the flat pattern geometry in DXF format and ensure that the developments take into account material requirements, bending directions, permissible deformations and the necessary manufacturing allowances.
Design of lifting accessories
We have designed a wide range of customised lifting accessories in accordance with the SFS-EN 13155 standard. We design solutions for safe and efficient lifting, from individual components to complex assemblies.
A typical delivery includes design, strength calculations, risk assessment and conformity documentation. We take into account operating conditions, loads and the customer’s specific requirements throughout the entire design process.
Rotor dynamic design
In the design of turbomachinery and high-speed machines, it is essential to understand the dynamic behaviour of the rotor assembly. Before manufacturing and empirical testing, the rotor assembly can be modelled with relatively high accuracy and its behaviour simulated at different speeds. For example, critical frequencies that may cause harmful rotor resonance and their unbalance responses can be calculated, and design changes can be made when necessary to ensure that operating speeds do not coincide with them.
Impellers that transfer liquid or gas from the axial direction to the radial direction, or vice versa, always generate axial forces. These axial forces can also be calculated during the design stage, allowing the necessary measures to be taken to balance them while considering any bearing preload forces.
Bearing selection
In the design of turbomachinery and high-speed machines, bearing selection is one of the most critical decisions. Bearings are typically selected based on speed, load, stiffness, accuracy, service life and, of course, cost.
As part of the bearing selection process, the rotor can also be simulated using specialised software, and bearing service life can be calculated analytically. We also evaluate the need for bearing lubrication oil, including oil quantity and lubrication flow rate.
Tolerance chain analysis
Understanding probabilities in mechanical design can lead to direct cost savings. In mechanical design, tolerances are often defined according to a “worst-case” scenario, where even a very small theoretical possibility of failure is not allowed, although accepting such a probability could result in significant savings. The longer the tolerance chain, the more important it becomes to understand probabilities. We use Root Sum Squared and Six Sigma methods for probabilistic tolerance stack-up calculations.
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