摘要:
The purpose of the present invention is to improve productivity when riveting by using various types of rivets while making riveting of rivets possible in a narrow space. Provided is an automatic riveting device provided with a rivet suction attachment unit for attaching the head (310) of a rivet (300) by suction, a tightening unit (50) for tightening a stringer (210) and clip (220) by the rivet, and a control unit. The control unit controls the rivet suction attachment unit so that the rivet suction attachment unit to which the head (310) of the rivet is attached is moved toward an upper side support body (11) and the shaft part (320) of the rivet is inserted into a through hole (230) formed in riveting position P, and controls the tightening nit (50) so that after the rivet suction attachment unit inserts the rivet into the through hole (230) and retreats from the riveting position P, an upper anvil (51) and a lower anvil (52) are brought into proximity and the stringer (210) and clip (220) are tightened by the rivet.
摘要:
Example valve stem and plug connections and example staking tools are described herein. An example apparatus includes a valve plug having a first side, a second side opposite the first side and a bore extending from the first side to the second side. A first portion of the bore is tapered from a first diameter to a second diameter smaller than the first diameter. A valve stem is disposed within the bore of the valve plug. The valve stem includes a first section, a second section and a third section between the first and second sections. The third section is tapered from a third diameter to a fourth diameter smaller than the third diameter. The tapers of the first portion of the valve plug and the third section of the valve stem, when engaged, create a frictional force that resists movement of the valve stem out of the bore.
摘要:
The invention relates to a method for joining at least two workpiece layers (1, 2) by introducing a connecting element (10) with a coating (15) applied externally to the connecting element (10), wherein the connecting element (10) is guided, in particular punched, through the first workpiece layer (1) by means of a ram (26), forming a cut surface (1), and penetrates at least partially into the second workpiece layer and is deformed by means of a die (21) such that it connects the at least two workpiece layers (1, 2) together in a form-fitting manner. The connecting element (10) is heated such that the coating (15) applied externally to the connecting element (10) melts and wets, in particular completely closes, the cut surface in the first workpiece layer (1); after a cooling process, the re-solidified coating (15) adheres to the cut surface of the first workpiece layer (1).