Abstract:
A nozzle assembly for a laser cutting head has a receptacle of insulating material of generally annular cross section with a central passage therethrough. A conductive insert has a body portion of generally annular cross section seated in the receptacle passage and it has a central passage which is threaded. Threadably engaged in the threaded passage of the insert is the threaded neck of a conductive nozzle which has a central passage extending therethrough, and a conductor extends through the insulating receptacle from the insert.
Abstract:
A machine for the simultaneous maching of a stack of plate-like workpieces has a frame with an overhead arm portion, a worktable below the arm portion, and a workpiece guidance assembly for moving the workpiece stack on the worktable. A rotary tool drive assembly and a riveting assembly are provided in the arm portion, and a tool storage assembly is spaced from the arm. A tool changer assembly has a pair of carrier rails extending from the tool storage assembly to adjacent the rotary tool drive assembly, and they are spaced to opposite sides thereof. A pair of tool carriers are reciprocatable on the rails for transporting tools between the tool storage assembly and the rotary tool drive assembly to effect insertion into and removal from said tool assembly of such tools. The carriers are vertically and horizontally movable relative to the rails to engage tools stored in the tool storage means and to cooperate with the rotary tool drive assembly to effect insertion of tools thereinto and removal of tools therefrom. A computer is operative to control the riveting and rotary tool drive assemblies and the tool changer and workpiece guidance assemblies.
Abstract:
As part of a process for bending workpieces (14), when the workpiece (14) is released from the upper die (8) and/or the lower die (10), the actual size of the bending angle (.beta.) is continually determined; from the actual size of the bending angle (.beta.) found, the change in it is determined and, as soon as the change in the actual size of the bending angle (.beta.) assumes a predetermined value, the actual size of the then existing bending angle (.beta.) is compared with the desired size. On a tooling machine for carrying out the method described, there are scanning elements (17,18) and a device (24) for determining the actual size of the bending angle (.beta.) that are parts of a device (19) for determining the change in the actual size of the bending angle (.beta.). The device (24) for determining the actual size of the bending angle (.beta.) is connected to a comparison device (32) for comparing the actual size of the bending angle (.beta.) to the desired size.
Abstract:
A high frequency cross-flow gas laser has a tubular conduit divided into a multiplicity of gas flow sections with gas inlets adjacent each of the mirrors therein and outlets therebetween. A pair of electrodes is provided along each flow section to produce a high frequency electrical discharge in the lasing gas mixture, and a cooler is used to chill the gas withdrawn from the conduit for recycling thereto. The electrode pairs are desirably radially rotated relative to one another to produce uniformity of the energy discharge across the cross-section of the lasing gas mixture.