摘要:
The invention provides a method of manufacturing an abrasive body which includes the steps of providing a mixture comprising a mass of nanosized ceramic particles and a mass of ultra-hard abrasive particles, typically diamond and cubic boron nitride, and sintering the mixture into a coherent body. The sintering conditions used are hot-pressing conditions.
摘要:
Machine à commande numérique pour l'affûtage d'outils de coupe comportant une colonne verticale (6) portant une ou deux paires de têtes porte-meule (8 à 11), dont les têtes porte-meule de chaque paire sont solidaires en rotation autour d'un axe horizontal commun et orientables autour de cet axe par un moyen électromécanique commun.
摘要:
A tool sharpening assembly (100) suitable for sharpening cutting tools (140,350,366,546,562). In some embodiments, a wedge-shaped port is formed between a rotational first abrasive surface (160,262) and a stationary second abrasive surface (162,264) to sharpen a distal cutting edge (146) of a cutting tool (140,230,546). In other embodiments, a cooling mechanism (136,326,330,334,338) actively draws heat generated during a sharpening operation from a tool (140) and through a tool support structure (170,234,328,332) contactingly supporting the tool, hi further embodiments, a rotatable abrasive slotted disc (364) comprises at least one inspection aperture (372) formed from an interior sidewall (390) with upper and lower leading and trailing edges (396,398,400,402) of non-uniform separation distance. In other embodiments, a cylindrical drum abrasive member (572) is provided with an associated stationary support plate (574). In further embodiments, a grinding wheel (580,600) is formed of a substrate (582,602) and a plurality of abrasive layers (584,586,592,612,614) adhered thereto.
摘要:
@ The invention is concerned with performing grinding operations on a workpiece at predetermined locations along its length and is described in connection with a machine for sharpening broaches in which a broach to be sharpened is mounted on a fixed bed (1), the positions of all the teeth on the broach are sensed by a probe (14) during a first or forward pass of a work head (12) along the whole length of the broach, the information so obtained is fed to a micro-processor and the broach teeth are sharpened in turn by a grinding wheel (15) during a return pass of the work head along the broach using the information obtained by the sensing probe and input data fed initially into the micro-processor by means of a keyboard (26) on a control panel (25).
摘要:
Grinding machine (1) comprising a first wheelhead (4) for machining flat surfaces and a second wheelhead (10) for machining workpieces (3) such as broaches. The first wheelhead (4) is slidably mounted on a vertical column(6) and has a slide (7) on its underside. The second wheelhead (10) is rotatable about its own axis and is slidably mounted on said slide (7). When the first wheelhead (4) is in its working position, the second wheelhead (10) is placed away from the workpiece (3) on the slide (7) in its rest position (A), and, when the second wheelhead (10) is in its working position (B), said second wheelhead (10) is placed next to the workpiece (3), angularly oriented in order to carry out the helical machining.