Abstract:
An ECM method involves the use of a thin hollow electrode assembly that carries the electrolyte within and that is advanced relatively to the workpiece. The small profile of the electrode results in a minimal removal of metal in forming the desired rotor or stator shape. The electrode profile allows significant power consumption reduction or increased machining speed for a given rate of power input. The electrode can be a unitary ring shape or can be made of segments that are placed adjacent each other so that a continuous shape is cut. Not all the lobes of the stator or rotor have to be cut in the same pass. Electrode segments can be used to sequentially provide the desired lobe count in separate passes. The lobe shapes in the electrode can be slanted to get the desired rotor or stator pitch or they can be aligned with the workpiece axis.
Abstract:
An electrolytic deburring system and method employing a relatively weakly conducting electrolyte (1) with the cathode (4a, 4b) immersed in the electrolyte in which an anodic potential is applied (3) to the workpiece (5) being deburred. A conductive element (14) acting as a virtual cathode is placed between the cathode and the part to provide a more conductive path than the existing path through the electrolyte to concentrate deburring action and/or shield a portion of the workpiece from the deburring action. For deburring a multiplicity of parts at the same time, two electrodes (56, 58) are immersed in the electrolyte and a potential difference is applied between them. Spaced parts (62-66) placed between the electrodes assume potential differences leading to selective material removal from the relatively anodic portions of each part. The polarity of the applied potential may be reversed, thereby reversing the polarity of the potential differences between the parts to selectively remove material from the newly anodic portions of the parts.
Abstract:
A Moineau style stator includes a stator tube having a plurality of rigid helical lobes formed on an inner surface thereof. The helical lobes define a major internal tube diameter that is greater than a pass through diameter of the tube such that the major diameter undercuts the pass through diameter of the tube. A major liner diameter may also be less than the pass through diameter so as to provide a suitable interference fit between rotor and stator.
Abstract:
Die Erfindung betrifft eine Vorrichtung (10) zum Bearbeiten von mit Schneidzähnen (S) versehenen plattenförmigen oder zylindrischen Werkstücken (70), mit einer Maschinenbasis (12), einer relativ zu der Maschinenbasis (12) verlagerbaren Bearbeitungseinrichtung (14) und einer relativ zu der Maschinenbasis (12) verlagerbaren Werkstückpositioniereinrichtung (16), wobei die Bearbeitungseinrichtung (14) eine relativ zur Maschinenbasis (12) entlang einer ersten Raumachse (Y1) linear verlagerbare Bearbeitungsbrücke (18) und einen relativ zur Bearbeitungsbrücke (18) entlang einer zweiten Raumachse (X1) linear verlagerbaren Bearbeitungsarm (20) umfasst, wobei an dem Bearbeitungsarm (20) eine Bearbeitungseinheit (26) mit einem Bearbeitungswerkzeug (28) um eine Schwenkachse (E1) schwenkbar gelagert ist, wobei die Schwenkachse (E1) im Wesentlichen orthogonal zu einer von erster und zweiter Raumachse (Y1, X1) aufgespannten Ebene verläuft, wobei weiter die Werkstückpositioniereinrichtung (16) einen relativ zu der Maschinenbasis (12) entlang einer dritten Raumachse (Z1) linear verlagerbaren Lagerschlitten (32) aufweist und wobei an dem Lagerschlitten (32) eine Kipplageranordnung vorgesehen ist, in der eine Werkstückaufnahmeanordung (44) um eine Kippachse (B1) verkippbar gelagert ist.
Abstract:
This invention is characterized in that a semi-finished electrode (42) is made according to a master gear (28) and an electrode is made by finishing electrolytically the semi-finished electrode (42), a work made in the same shape as that of the master gear (28) and the electrode are so placed as to face each other with a predetermined gap, and the work is finished.
Abstract:
A herringbone gear includes a cylindrical body having a circumferential face having a width. A first helical gear tooth on the circumferential face has a first configuration, a second helical gear tooth on the circumferential face has a second configuration, and a transition on the circumferential face extends between the first helical gear tooth and the second helical gear tooth. An involute form taken within a transverse plane of the circumferential face remains constant over the width.
Abstract:
Nach der Erfindung werden Elektroden für das Erodieren von Planetwalzenextruderteilen am Umfang mit einer Schrägung und/oder Rundung versehen und unter bestimmten Umständen automatisch gewechselt. Außerdem wird das Dielektrikum unten abgezogen und frisches, gekühltes Dielektrikum oben zugegeben.
Abstract:
A machine for machining a workpiece having a central longitudinal axis is provided. The machine includes a chuck or fixture on which the workpiece is disposable, a grinding spindle to remove material from the workpiece, the grinding spindle having a central longitudinal axis about which the grinding spindle rotates and being disposed with the central longitudinal axes intersecting one another so as to create a continuous gear tooth on the workpiece and an electrochemical grinding (ECG) element configured to execute ECG processing on the grinding spindle and the workpiece to soften the workpiece as the gear tooth is being created by the grinding spindle.
Abstract:
A method for designing and manufacturing a gear by means of a computer-controlled machining device comprises the following steps of: using a machining device adapted to perform an operation from the group including: milling and spark eroding; using a tool, in particular a milling device or a spark erosion head; using a machining device of the type with at least five simultaneous, independent degrees of freedom; and applying an elongate tool, the form of which corresponds at least to some extent with the intended form of surfaces for modelling by machining.