Engineering support for direct fastening in light metalAs valuable support for design engineers and developers EJOT offers prognosis programs for the pre-dimensioning of direct fastening into thermoplastics and light metal. Fastening parameters can be calculated with these tools, by taking the material and design parameters into consideration. Numerous practical examples show that significant savings potential can be achieved with these programs already during the development phase. EJOT ALtra CALC® has been specifically developed for the prognosis of direct fastening into light metal.
EJOT ALtracs® Plus screws are bespoke self-tapping fasteners for maximum strength of light metal joints up to a hardness of 140 HB (see image I). Based on a comprehensive research and development program, the prognosis program ALtra CALC® (see image II) has been developed specifically for this type of screw.
On the basis of VDI 2230 many high-capacity calculation programs are available today, but their application range is limited to the calculation of metric screw joints in metallic materials. For the calculation of self-tapping joints the guidelines of the VDI 2230 have only a limited applicability. In particular the process of thread-forming and the specific properties of directly fastened materials are not considered. This also includes various light metals such as aluminium and magnesium. With the development of the ALtra CALC® prognosis program the industry leader EJOT has addressed this problem in order to offer an optimum design aid to the customer. The result is an effective and precise calculation tool, which has already been proven in many applications and is also subject to ongoing optimization and further development.
Brief characteristics of the possible applications of the ALtra CALC® prognosis program:
This and other functions for the pre-calculation of screw joints, lead to a clear reduction of development time and thus significant costs savings in component design. Due to the calculation possibilities these savings potentials can be recognized and used early in the process. Over-dimensioning of the screw joint is prevented, material and thus weight is saved. Time-consuming and cost-intensive tests on the component are reduced to a minimum.
This calculation program is now also available to the customer online under www.ejot.com, in addition to other services such as download of CAD data and product information. After the required registration under "CAD & more", design engineers and developers can use the so-called "light version" of ALtra CALC® directly online. "Light", because the tool has been developed for highest possible user-friendliness, so the customer can use it online and independently. For highly complex applications that might not be covered by the light version, the customer can access the complete fastening technology know-how of the EJOT application engineers and of the APPLITEC laboratory.