摘要:
A device for the shock-absorbing attachment of two elements to be assembled, the attachment device including: an inner part that is tubular along an attachment axis; an outer part that is tubular along the attachment axis, and hollow, the inner part being accommodated in the outer part such that the outer surface of the inner part is facing the inner surface of the outer part; an elastomer layer between the outer part and the inner part, the elastomer layer, when seen in section in a longitudinal plane including the attachment axis, including: to either side of the attachment axis, at least three so-called longitudinal portions, and at least two so-called transverse portions.
摘要:
A method for fabricating a joint designed to connect tubes for a space frame, where a space frame may be a vehicle chassis, is provided. The method may generate joints with variable geometry and fine features which may reduce production costs, reduce production time, and generate joints configured for highly specific applications. The joint may include centering features which may create a space between a surface of the tube and a surface of the joint through which adhesive may flow.
摘要:
Disclosed is a fixing module for fixing an optical system to an optical apparatus, including a coupling unit having a plate to couple to the apparatus, the coupling unit having a first penetrating space at a central portion thereof and a protruding portion protruded downwards from the plate; a first fixing unit combinable with the coupling unit and having a receiving space including a thermosetting resin such that the protruding portion is fixed into the thermosetting resin; and a second fixing unit combinable with the first fixing unit and having a second penetrating space communicating with the first penetrating space, such that the optical system can penetrate through the first and the second penetrating spaces and be fixed by the second fixing unit.
摘要:
An adhesive joint of a first hollow profile to a second hollow profile, and a method of producing such an adhesive joint. The second hollow profile is surrounded in an overlapping region by the first hollow profile, and a core connected to the first hollow profile is arranged in the overlapping region inside the first hollow profile and the second hollow profile. An expandable structural adhesive is arranged between the core and the inner face of the second hollow profile.
摘要:
The present invention generally relates to a support pole having a spike unit with a prefabricated engaging thread and a method of using the same. The top of the spike unit is internally secured within a bottom opening of the support pole by an epoxy wherein the bottom of the support pole rests on a generally circular ridge of the spike unit. The support pole is especially suitable for use with mailbox posts, birdhouse posts, volleyball posts, fences, or the like. The support pole may be securely inserted or removed from the ground without the need for concrete, shovels and other numerous tools. The support pole has an opening on its exterior side for temporarily receiving a perpendicularly inserted rod which is inserted therein so as to provide leverage for driving the support pole into the ground by rotating the support pole clockwise or counter-clockwise.
摘要:
Design of a 3-D truss structure, including a plurality of coupling nodes and a plurality of struts, is optimized by performing a quantitative optimization of an objective function corresponding to a figure of merit of the design. The quantitative optimization includes: generating a finite element analysis model, the analysis model a 3-D lattice mesh of strut-like finite elements; computing, with the finite element analysis model, a value for the objective function; and optimizing the objective function by executing at least two cycles of an optimization loop. The optimization loop includes a) computing a respective parameter of each strut-like finite element; b) deleting, from the finite element analysis model, selected finite elements for which a resulting mechanical property is less than a threshold; (c) computing an updated value for the objective function; and repeating the optimization loop until the objective function is within a desired tolerance of the specified value.
摘要:
An coaxial assembly includes a first member, a second member, and at least two position members. The first member has an assembly hole with a sidewall. The second member having an lateral wall. The at least two position members are evenly arranged along a circumference of the lateral wall of the second member. The second member and assembly hole are configured such that when the second member is within the assembly hole, the at least two position members tightly abut the sidewall of the assembly hole, thereby causing the second assembly member to be coaxial with the first assembly member. An assembly method is also provided.
摘要:
A tube form assembly includes an inner member and an outer member. Each of the inner and outer members has an offset which creates a cavity therebetween. During assembly of the tube form assembly, an adhesive is located in the cavity and squeezed out and through the adjacent bond lines between the inner member and outer member. The pressurization and flow of adhesive outward from the cavity facilitates removal of air bubbles, as well as prevents the introduction of air bubbles into the bond line.
摘要:
An optical mount and mounting system including an optical device, a housing, and a plurality of optical mounts that couple the optical device to the optical housing. Each mount includes a sleeve attached to the optical device and each sleeve includes a bore. Studs are attached to the optical housing and each stud includes an outer bonding surface extending through the bore of each sleeve. Once the optical device is aligned properly, a curable material is deposited into the sleeve and cured between the sleeve and the stud, such that the curable material couples the sleeve and the stud to each other to provide a robust structural joint that minimizes self-induced stresses into the optic. A series of annular conical portions and corresponding surfaces are provided to retain registration of the optical device against dynamic shearing and bending forces. A method of aligning and mounting an optical device is provided.
摘要:
A holder for connecting a module to a component of an aircraft or spacecraft includes a first holder portion having a first adhesive face and a second holder portion having a second adhesive face. The first and second holder portions are movable relative to one another in an initial state of the holder such that a portion of the component can be received between the holder portions so as to glue the holder portions to the component by means of an adhesive layer in each case. The holder has two or more guided parts which are movable relative to one another by means of mutually cooperating guide faces in the initial state of the holder. The guide faces are suitably formed for being glued together using an adhesive. The holder can be used to counter peeling stress of an adhesive connection of the holder in the region of the first and/or second adhesive face.