Abstract

A charge dissipation plate for aircraft electronic systems having a metal plate with machined through openings. A collar is integrally formed with each through opening. The collar extends upwardly from the plane of the plate and includes a threaded outer surface for receiving an electronic connector.

IPC Classes  ?

• B64D 45/02 - Lightning protectorsStatic dischargers
• H01R 13/648 - Protective earth or shield arrangements on coupling devices
• H01R 13/74 - Means for mounting coupling parts to apparatus or structures, e.g. to a wall for mounting coupling parts in openings of a panel
• H02G 13/00 - Installations of lightning conductorsFastening thereof to supporting structure

Abstract

A charge dissipation plate for aircraft electronic systems comprises a machined metal plate (1) have at least one through opening (2a, 2b, 2c) machined therein and an integrally formed collar (3a, 3b, 3c) associated with and extending around the or each opening (2a, 2b, 2c). The or each collar (3a, 3b, 3c) upstands from the plane of the plate1and has a threaded outer surface (4a, 4b, 4c). The or each collar (3a, 3b, 3c) forms a housing for receiving an electronic connector therein, the threaded outer surface (4a, 4b, 4c), in use,being engagable by a mating threaded connector for connecting with the electronic connector mounted in the collar.

IPC Classes  ?

• B64D 4/5 -
• H01R 4/64 - Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Abstract

A method of manufacturing a tubular component including rough machining the exterior surface of a solid billet 1 to reduce the size thereof and form two flanges. An axial blind bore 6 is then machined in the billet 1, after which a probing operation is carried out on the interior surface of the bore 6 in order to check the concentricity. A straightening operation is then performed on the billet in order to reverse any curvature along the longitudinal axis. A further machining operation is then performed on the outside to reduce the wall thickness of the bore before measuring the wall thickness of the bore 6 around the circumference of the billet 1 at least at two different axial positions. The billet 1 is then checked again and a final machining operation is then performed in order to form any ports and upstands which are required.

IPC Classes  ?

• B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
• B23P 13/02 - Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
• G01B 5/12 - Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
• G01B 5/06 - Measuring arrangements characterised by the use of mechanical techniques for measuring length, width, or thickness for measuring thickness
• F16J 10/02 - Cylinders designed to receive moving pistons or plungers
• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type

Abstract

A method of manufacturing a tubular component comprising rough machining the exterior surface of a solid billet (1) to reduce the size thereof and form at least a first radially extending flange (3) and a second radially extending flange (5) on the exterior of the billet 1. An axial blind bore (6) is then machined in the billet (1), after which a probing operation is carried out on the interior surface of the bore (6) in order to check the concentricity of the interior surface about a flange axis which extends longitudinally between the centres of the first and second flanges (3, 5) by measuring any variation in the distance of the internal surface from the said flange axis around the inner circumference of the bore (6) inside the first and second flanges and midway therebetween. A straightening operation is then performed on the billet in order to reverse any curvature along the longitudinal axis outside of allowed tolerance for the component identified in the billet by measurement of variations in the distance of the inner surface of the bar from the flange axis around the inner circumference of the bore at any of probed points. A further machining operation is then performed on the outside surface of the billet (1) to reduce the wall thickness of the bore before measuring the wall thickness of the bore (6) around the circumference of the billet (1) at least at two different axial positions along the billet in order to confirm uniform wall thickness around and along the billet within allowable tolerance. The billet (1) is then checked again to identify any remaining curvature about the longitudinal axis of the bar; and any curvature straightened using a press. A final machining operation is then performed in order to form any ports and upstands which are required in the component and to remove any other unwanted material from the exterior of the billet, followed by a fine honing operation on the longitudinal bore in order to reduce the wall thickness and the diameter of the bore to the final specified values.

IPC Classes  ?

• B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
• F16J 10/02 - Cylinders designed to receive moving pistons or plungers
• B23P 13/02 - Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
• B23B 41/12 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
• B23B 1/00 - Methods for turning or working essentially requiring the use of turning-machinesUse of auxiliary equipment in connection with such methods
• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type