This paper describes a new parallel kinematic architecture for machining applications, namely, the orthoglide. This machine features three fixed parallel linear joints which are mounted orthogonally and a mobile platform which moves in the Cartesian x-y-z space with fixed orientation. The main interest of the orthoglide is that it takes benefit from the advantages of the popular PPP serial mach...

This paper describes a new parallel kinematic architecture for machining applications: the orthoglide. This machine features three fixed parallel linear joints which are mounted orthogonally and a mobile platform which moves in the Cartesian x-y-z space with fixed orientation. The main interest of the orthoglide is that it takes benefit from the advantages of the popular PPP serial machines (re...

After Gough [1] and Stewart [2] in the 50's and 60's introducing the idea of ‘hexapods’ (6-dof) [3][4], Clavel and his Delta structure [5] in the late 80's opened a new era with machines able to reach extremely high performances, used first for pick-and-place operations, and more recently for 3 or 5-axis machining. Considering the machining of complex shape objects, the solution often proposed ...

machines using ball end mill cutters; the determination of the optimum tool and the minimization of the machining times for each surface. In the proposed methodology, the accessibility problem is first analyzed and then the optimal tool is selected from a database of tools. Next, and depending on the machining method, we select automatically the optimum sweeping method and the associated machin...

Interactive sculpting is the process by which a designer can impose free-form shape changes on the object being designed. It has potential applications in the fields like computer aided geometric design arid rapid prototyping. Our approach to interactive sculpting is through the intermediate step of interactive virtual nlachining (IVM). IVM is a subset of interactive sculpting in that the degre...

In this paper, a divide-and-conquer algorithm for machining feature recognition over network is presented. The algorithm consists of three steps. First, decompose the part and its stock into a number of sub-objects in the client and transfer the sub-objects to the server one by one. Meanwhile, perform machining feature recognition on each sub-object using the MCSG based approach in the server i...

In this project, we explore a novel framework for formal veriication of a real-time speciications of a machining system. A machining system falls under the broad category of a real-time system. The TTM/RTTL framework is used for speciication and veriication of a machining system. In TTM/RTTL framework, a machining system is modeled as a parallel composition of various modules each representing ...

Nowadays, High Speed Machining (HSM) is usually used for production of hardened material parts with complex shapes such as dies and moulds. In such parts, toolpaths generated for bottom machining feature with the conventional parallel plane strategy induced many feed rate reductions especially when boundaries of the feature have a lot of curvatures and are not parallel. Several machining experi...

In this paper, we consider a queuing model extension for a manufacturing cell composed of a machining center and several parallel downstream predestinations. In the machining center, there is an ample supply of raw material for a number of different part-types. For each type, parts are first processed in the machining center, and then in one of parallel production stations (one for each type). ...