Ny konstruktionslösning och kostnadsförslag för stansverktyg
The task for this thesis is to design a tool that is used to cut-out preforms of thermoplastic adhesive and also to make an estimate of costs for the stamping tool. The tool is used in the repair process at the MCM production line.
The result of gathered information has affected how the design of the stamping tool has developed. The handling of thermoplastic adhesive in the repair process is one of the factors that influenced the design. The adhesive is sensitive for exposure to moisture. Therefore an automated feeding system of the adhesive is not recommended.
The users wished for an automated stamping tool. Due to too low utilization this is not recommended because the material properties of the adhesive may decay. The stamping tool is used for 1, 17 % of the total working time.
The stamping performed on site, at Ericsson AB, to create the preforms is cheaper than if bought from a supplier. The difference in price is approximately 0, 90-1, 30 Swedish kronor.
Changes in the design presented include transmission of the stamping force, the tool holder and the holding device for the adhesive. The estimated costs for this design is approximately 22 000 Swedish kronor.
Further investigation should be performed if the need of a new stamping tool really is necessary. The thermoplastic adhesive is available in paste form. This option should be investigated.