Flexible automation of clinching and adhesive bonding of sheet metal parts

Juha Varis, Raimo Penttilä, Veli Kujanpää

    Research output: Book/ReportReport

    Abstract

    Adhesive bonding and mechanical joining techniques have developed rapidly in recent years and they have become more common joining techniques in sheet metal product industry. New joining techniques have become more popular because increasingly used precoated sheet materials are difficult to weld. New joining techniques can also be applied as well for precoated as for uncoated sheet metal materials. VTT Manufacturing Technology in cooperation with IVF has carried out a research project of flexible automation of joining techniques for sheet metals. The project consisted of flexible automation of mechanical joining and adhesive bonding of sheet metal parts. The joining techniques studied can be applied to supplement each other. The shape of a typical clinching tool is limiting the applications, because the tool must reach to both sides of the joint like in spot welding. Adhesive bonding without jigs can be used only for parts that are locking each other when joined. If no constructive locking appears the parts are kept steady in a jig or the parts are secured by clinching or riveting. The adhesive is also a sealing of the joint. The research equipment was developed and built in the laboratory of VTT, consisting of a robot with linear track, clinching equipment, adhesive bonding equipment, a flexible jig, a ventilation system and tables for loading and unloading of sheet metal parts. The demands for joint design and the economic effects of different joining techniques were studied. Five industrial case products were studied considering the utilization of clinching or adhesive bonding instead of spot welding or arc welding. The results of the studies show that clinching and adhesive bonding are possible to be automated flexibly. Existing sheet metal products usually need some re-design when a new joining method is applied. Sufficient joint strength for most sheet metal products can be produced by clinching or adhesive bonding. Joining costs depend very much on jig costs. Clinching reduces remarkably the lead time of adhesive bonded parts and reduces also jig costs. Clinching and adhesive bonding are very suitable joining techniques for several material combinations, especially for thicknesses less than 3 mm.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages40
    ISBN (Print)951-38-4812-4
    Publication statusPublished - 1995
    MoE publication typeNot Eligible

    Publication series

    SeriesVTT Tiedotteita - Meddelanden - Research Notes
    Number1657
    ISSN1235-0605

    Fingerprint

    Sheet metal
    Joining
    Adhesives
    Automation
    Jigs
    Spot welding
    Riveting
    Costs
    Economic and social effects
    Electric arc welding
    Unloading
    Ventilation
    Welds
    Robots

    Keywords

    • metals
    • parts
    • sheets
    • adhesion
    • clinching
    • automation

    Cite this

    Varis, J., Penttilä, R., & Kujanpää, V. (1995). Flexible automation of clinching and adhesive bonding of sheet metal parts. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1657
    Varis, Juha ; Penttilä, Raimo ; Kujanpää, Veli. / Flexible automation of clinching and adhesive bonding of sheet metal parts. Espoo : VTT Technical Research Centre of Finland, 1995. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1657).
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    abstract = "Adhesive bonding and mechanical joining techniques have developed rapidly in recent years and they have become more common joining techniques in sheet metal product industry. New joining techniques have become more popular because increasingly used precoated sheet materials are difficult to weld. New joining techniques can also be applied as well for precoated as for uncoated sheet metal materials. VTT Manufacturing Technology in cooperation with IVF has carried out a research project of flexible automation of joining techniques for sheet metals. The project consisted of flexible automation of mechanical joining and adhesive bonding of sheet metal parts. The joining techniques studied can be applied to supplement each other. The shape of a typical clinching tool is limiting the applications, because the tool must reach to both sides of the joint like in spot welding. Adhesive bonding without jigs can be used only for parts that are locking each other when joined. If no constructive locking appears the parts are kept steady in a jig or the parts are secured by clinching or riveting. The adhesive is also a sealing of the joint. The research equipment was developed and built in the laboratory of VTT, consisting of a robot with linear track, clinching equipment, adhesive bonding equipment, a flexible jig, a ventilation system and tables for loading and unloading of sheet metal parts. The demands for joint design and the economic effects of different joining techniques were studied. Five industrial case products were studied considering the utilization of clinching or adhesive bonding instead of spot welding or arc welding. The results of the studies show that clinching and adhesive bonding are possible to be automated flexibly. Existing sheet metal products usually need some re-design when a new joining method is applied. Sufficient joint strength for most sheet metal products can be produced by clinching or adhesive bonding. Joining costs depend very much on jig costs. Clinching reduces remarkably the lead time of adhesive bonded parts and reduces also jig costs. Clinching and adhesive bonding are very suitable joining techniques for several material combinations, especially for thicknesses less than 3 mm.",
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    Varis, J, Penttilä, R & Kujanpää, V 1995, Flexible automation of clinching and adhesive bonding of sheet metal parts. VTT Tiedotteita - Meddelanden - Research Notes, no. 1657, VTT Technical Research Centre of Finland, Espoo.

    Flexible automation of clinching and adhesive bonding of sheet metal parts. / Varis, Juha; Penttilä, Raimo; Kujanpää, Veli.

    Espoo : VTT Technical Research Centre of Finland, 1995. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1657).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Flexible automation of clinching and adhesive bonding of sheet metal parts

    AU - Varis, Juha

    AU - Penttilä, Raimo

    AU - Kujanpää, Veli

    PY - 1995

    Y1 - 1995

    N2 - Adhesive bonding and mechanical joining techniques have developed rapidly in recent years and they have become more common joining techniques in sheet metal product industry. New joining techniques have become more popular because increasingly used precoated sheet materials are difficult to weld. New joining techniques can also be applied as well for precoated as for uncoated sheet metal materials. VTT Manufacturing Technology in cooperation with IVF has carried out a research project of flexible automation of joining techniques for sheet metals. The project consisted of flexible automation of mechanical joining and adhesive bonding of sheet metal parts. The joining techniques studied can be applied to supplement each other. The shape of a typical clinching tool is limiting the applications, because the tool must reach to both sides of the joint like in spot welding. Adhesive bonding without jigs can be used only for parts that are locking each other when joined. If no constructive locking appears the parts are kept steady in a jig or the parts are secured by clinching or riveting. The adhesive is also a sealing of the joint. The research equipment was developed and built in the laboratory of VTT, consisting of a robot with linear track, clinching equipment, adhesive bonding equipment, a flexible jig, a ventilation system and tables for loading and unloading of sheet metal parts. The demands for joint design and the economic effects of different joining techniques were studied. Five industrial case products were studied considering the utilization of clinching or adhesive bonding instead of spot welding or arc welding. The results of the studies show that clinching and adhesive bonding are possible to be automated flexibly. Existing sheet metal products usually need some re-design when a new joining method is applied. Sufficient joint strength for most sheet metal products can be produced by clinching or adhesive bonding. Joining costs depend very much on jig costs. Clinching reduces remarkably the lead time of adhesive bonded parts and reduces also jig costs. Clinching and adhesive bonding are very suitable joining techniques for several material combinations, especially for thicknesses less than 3 mm.

    AB - Adhesive bonding and mechanical joining techniques have developed rapidly in recent years and they have become more common joining techniques in sheet metal product industry. New joining techniques have become more popular because increasingly used precoated sheet materials are difficult to weld. New joining techniques can also be applied as well for precoated as for uncoated sheet metal materials. VTT Manufacturing Technology in cooperation with IVF has carried out a research project of flexible automation of joining techniques for sheet metals. The project consisted of flexible automation of mechanical joining and adhesive bonding of sheet metal parts. The joining techniques studied can be applied to supplement each other. The shape of a typical clinching tool is limiting the applications, because the tool must reach to both sides of the joint like in spot welding. Adhesive bonding without jigs can be used only for parts that are locking each other when joined. If no constructive locking appears the parts are kept steady in a jig or the parts are secured by clinching or riveting. The adhesive is also a sealing of the joint. The research equipment was developed and built in the laboratory of VTT, consisting of a robot with linear track, clinching equipment, adhesive bonding equipment, a flexible jig, a ventilation system and tables for loading and unloading of sheet metal parts. The demands for joint design and the economic effects of different joining techniques were studied. Five industrial case products were studied considering the utilization of clinching or adhesive bonding instead of spot welding or arc welding. The results of the studies show that clinching and adhesive bonding are possible to be automated flexibly. Existing sheet metal products usually need some re-design when a new joining method is applied. Sufficient joint strength for most sheet metal products can be produced by clinching or adhesive bonding. Joining costs depend very much on jig costs. Clinching reduces remarkably the lead time of adhesive bonded parts and reduces also jig costs. Clinching and adhesive bonding are very suitable joining techniques for several material combinations, especially for thicknesses less than 3 mm.

    KW - metals

    KW - parts

    KW - sheets

    KW - adhesion

    KW - clinching

    KW - automation

    M3 - Report

    SN - 951-38-4812-4

    T3 - VTT Tiedotteita - Meddelanden - Research Notes

    BT - Flexible automation of clinching and adhesive bonding of sheet metal parts

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Varis J, Penttilä R, Kujanpää V. Flexible automation of clinching and adhesive bonding of sheet metal parts. Espoo: VTT Technical Research Centre of Finland, 1995. 40 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1657).