Method and device for directly screwing together at least two components without a pilot hole using a holding down clamp
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsAndreas Somnitz, Manuel Kaiser, Maximilian Wilhelm, Andreas Forster
Life of this patent
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Abstract
A method and device are provided for directly screwing together at least two components using a self-drilling and tapping screw which has a head and a shank formed onto the head with a self-tapping thread section and a hole-drilling section for flow drilling. The components are held pressed against one another by a holding down clamp while the screw is screwed in. The holding down force, with which the holding down clamp presses the components against one another while the screw is screwed in, is varied.
Claims12
A method for directly screwing together at least first and second components using a hole-drilling and thread-cutting screw, the screw having a head and a shank integrally formed on the head, which shank includes a self-tapping threaded section and a hole-drilling section for flow drilling, the method comprising the acts of:
- pressing the first and second components against one another via a holding down clamp during the directly screwing together of the at least first and second components;
- and
- varying a holding down force with which the holding down clamp presses the first and second components against one another during the directly screwing together of the at least first and second components;
- and
- coupling at least one adjustable actuating drive with the holding down clamp, said adjustable actuating drive being electronically controlled via a control device in order to control the varying holding down force.
A device for directly screwing together at least first and second components using a hole-drilling and thread-cutting screw having a head and a shank integrally formed on the head, the shank having a self-tapping threaded section and a hole-drilling section for flow drilling, the device comprising:
- a screwing spindle configured to apply a pressure force and torque to the hole-drilling and thread-cutting screw to be screwed into the components during the directly screwing together operation;
- a holding down clamp configured to press the first and second components against one another during the directly screwing together operation, the holding down clamp being configured to apply a variable holding down force on an upper one of the first and second components during the directly screwing together operation;
- and
- at least one adjustable actuating drive operatively coupled with the holding down clamp, said adjustable actuating drive being electronically controlled via a control device in order to control the varying holding down force.
Dependencies are inferred from the claim text.