Abstract: An angle adjusting mechanism or a linear axis of a processing machine is provided with a reciprocation device. A tool and a tool cutting mechanism are mounted on a moving part of the reciprocation device. A workpiece is processed by the tool based on a combination of the drive of the processing machine and the drive of the reciprocation device.

Abstract: A non-rotary shaping method (700, 800, 900) and shaping center (600) for forming a part using a non-rotating cutting tool (400) for removing material from a non-rotating workpiece within a three-dimensional work envelope that obsoletes the use of mills for profiling operations. Without the need to rotate to produce sufficient surface footage to remove material, the cutting tool (400) applies constant cutting force to the workpiece along a one-, two-, or three-dimensional cutting path. Also, without the need to rotate, neither the cutting tool nor the part are constrained in shape by axial symmetrical. Therefore, parts without any restriction in shape can be produced with finer surface finishes and higher material removal rates than by milling.

Abstract: Method for manufacturing wooden floor boards having an antique and used look, the boards of planed new wood being subjected to a mechanical treatment for making damages in its circumferential surface, and after that to a chemical treatment of at least the entire top surface. The chemical treatment comprises the impregnation of at least the entire top surface and applying a hard wax oil after that.

Abstract: A non-rotary cutting tool which is to be moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predetermined direction. The cutting tool includes (a) a generally cylindrical shank portion, and (b) a generally semi-cylindrical body portion which has an outer circumferential surface constituted by the rake face and a semi-cylindrical surface. The semi-cylindrical body portion has a cutting edge which is defined by an edge of the rake face and which is covered with a diamond coating. Also disclosed is a process of machining a scroll member of a scroll compressor by using this non-rotary cutting tool.

Abstract: Apparatus for machining a groove in an arcuate workpiece segment comprises a horizontal milling table, a carriage mounted on the table and supporting a workpiece to be machined, a milling guide mounted on the carriage and including a vertical post, an arm extending radially from the post, and a milling assembly attached to the arm and including a cutting tool overlying a workpiece mounted on the carriage. The table is movable in x and y directions in a horizontal plane to displace the workpiece along an arcuate path relative to the cutting tool, and the milling assembly is displaceable along a vertical axis to move the cutting tool toward and away from the workpiece.

Abstract: This invention aims at avoiding interference of a blade when a plurality of grooves of a diffraction grating element are formed. In order to achieve this object, in a method of working a diffraction optical grating element shape on a working target surface, a main spindle for rotatably supporting a cutting blade is provided on X-, Y-, and Z-coordinate axes of the working target surface, and an angle of an edge of the cutting blade mounted on the main spindle performs working to have an inclination with such an angle that interference with a planned working position at an outer peripheral portion of a curved surface of the diffraction optical grating element is avoided.

Abstract: The present invention is a one piece sleeve for a rotary valve, the sleeve comprising an array of communication slots formed in the bore of the sleeve, characterized in that at least a portion of the floor of one of said slots is convex. Figure depicts sleeve (1b) with arcuate slot (21b) which has a convex floor and is open ended at both axial extremities of surface (17b) of bore (16b) of sleeve (1b). This slot may preferably be used as a return slot on the sleeve.