Rapporten behandlar utveckling av en halvautomatisk monteringsstation för en elektronisk vattenblandare. Monteringsstationen roterar blandarhuset till vattenblandaren i olika positioner så att en operatör manuellt kan montera på komponenter på blandarhuset. Nya behov har uppmärksammats under tiden monteringsstationen varit i bruk och nya sekvenser för byte av redan monterade komponenter på en färdigmonterad produkt har tagits fram. Främst handlar behovet om att kunna byta en enskild komponent på en färdigmonterad produkt när det har visat sig att den monterade komponenten inte håller måttet i kontroller direkt efter monteringsprocessen. Kartläggning av aktuella sekvenser har gjorts genom observationer när monteringsstationen i varit i bruk. För att få fram nya optimerade sekvenser har behovet av förbättringar kartlagts genom att fråga produktionstekniker och operatörer i monteringen om upplevda problem och önskemål på förändringar i monteringsstationen för att underlätta monteringsarbetet och öka motivationen. Byte av en blandventil/termostatinsats på en redan monterad vägghängd Tronic-blandare är ett av de största upplevda problemen vid monteringsstationen. En ny tidsoptimerad sekvens för byte av blandventil/termostatinsats i monteringsstationen har tagits fram som innebär att monteringsstationen kommer användas i 5 steg istället för i 10 steg som i gamla monteringssekvensen. Arbetet har även uppmärksammat vikten av att ha tillgång till aktuell programmering och dokumentation för maskiner/stationer som används i produktionen på företaget. / The report deals with the development of a semi-automatic assembly station for an electronic water mixer. The assembly station rotates the mixer housing in various positions for the operator to be able to manually assemble components on the mixer housing. The operators have identified that alternate sequences in the assembly station might improve the assembly process. New sequences for replacing already assembled components on the assembled mixer product have been developed. The main need is to be able to change a single component on an already assembled mixer product when the component has been shown not to meet the quality standards. Mapping of current sequences has been done through observations when the assembly station has been in use. To obtain new optimized sequences the need for improvements has been mapped by asking production technicians and operators in the assembly about perceived problems and wishes for changes in in the assembly station to ease the assembly work and increase motivation. Replacing a mixing valve/thermostat insert on an already assembled wall-mounted Tronic mixer is one of the biggest problems experienced at the assembly station. A new time-optimized sequence for replacing the mixing valve/thermostat insert in the assembly station has been developed. The new sequence in the assembly station will use 5 steps to finish the change instead of 10 steps as in the old sequence. The report has also highlighted the importance of having access to up-to-date programming, and documentation for machines/stations used in the production line at the company.

Production lines for assembling two parts by screwing require flexible positioning and accurate tightening torque. Working with screwed products in process lines can cause bodily harm. The project aims to develop an application to compensate for the monotonous and tiring work. This report reviews the integration of Bosch Rexroth’s Compact module, and Linear module with an ErgoSpin. The project’s objective entails a turnkey solution for a developed application to be implemented in production lines. The ErgoSpin is a fast, self-tightened screwdriver placed over the screw by measuring the angle, gradient, and tension with the optimal tightening torque. The integration of the products is both electrical and mechanical. Mechanical elements were designed to merge the products into an application. The electrical interfaces between the products were connected and programmed through Bosch Rexroth IndraDrive, and a motion control system. By integrating these products, and implementing them in a production line, the work can be performed more efficiently, and the employees can focus on other tasks. The application is intended to work beside a conveyor unit in assembly stations. Tests were performed to assemble plates with different distances between the hotels and different sizes of screws. The test measured the time it took the application to assemble parts with different distances between the holes and the actual tightening torque it entailed. The results from the tests indicated that optimal tightening torque was achieved for all tests and that the execution of the application has no influence on the mechanical performance. The time difference for the various distances between the holes was almost negligible, and indicated rapid changes between the holes. The time difference between the different screw dimensions proves a slight increase in time for the larger dimensions. The risk assessment was conducted on the application by FMEA to account for all potential hazards based on events in the application’s area of use. The FMEA also provides the proposed actions to prevent the risks.