摘要:
A polishing apparatus is used for polishing a workpiece such as a semiconductor wafer to a flat mirror finish by a combination of chemical polishing and mechanical polishing. The polishing apparatus includes a turntable with a polishing cloth mounted on an upper surface thereof, a top ring for supporting the workpiece to be polished and pressing the workpiece against the polishing cloth, and a dressing tool for dressing the polishing cloth on the turntable. The polishing apparatus further includes a cover which covers an upper surface of the turntable for preventing liquid on the turntable from being scattered, and inserting holes formed in an upper wall of the cover for inserting the top ring and the dressing tool therethrough.
摘要:
A method and apparatus is disclosed for cleaning and cooling a machine tool and workpiece in which a housing substantially surrounds the machine tool and closely conforms to the tool. A high pressure coolant spray is directed from the housing against the working surface of the rotating machine tool to clean the tool afterwhich the rotation of the machine tool within the close confinement of the housing sprays the coolant from the housing onto the workpiece where it serves to cool and lubricate the workpiece.
摘要:
An improved shielding against splash of rearward-ejected slurry and dust provides a circular-saw brick-sawing container with a broad shield having a front edge overlapping the saw shroud, and in turn having a rear edge overlapped by a fixed horizontal shield connected with an upright fixed shield spaced from the saw container backsplash. A "Z"-shaped member resiliently connects the broad shield with the saw arm permitting a close, moving overlap at the aforementioned rear edge overlapped by the fixed horizontal shield. Laterally spaced vertical fixed-shields respectively adjacent an angled end of the broad shield splash container at the sides and a half-moon shaped array of spray nozzles wet down dust of dry sawing, controlled by a three-way valve that also controls a saw-wetting spray, both with recirculated, screened water froma catch pan base.
摘要:
A protective cover for a handheld power tool, with a tool that is at least partially surrounded by the protective cover, is formed of at least a first wall element and a second wall element, which in order to form a tool space are connected to each other in a parallel-spaced arrangement. The first wall element has a first circumferential section and the second wall element has a second circumferential section. The circumferential sections overlap each other and form a circumferential wall of the protective cover, with at least one opening which is provided in the outer-lying second circumferential section and under which the inner-lying first circumferential section extends.
摘要:
A supply device for a handheld power tool for a cutting grinder includes a cutting tool and a protective cover which at least partially surrounds the cutting tool. The supply device includes a U-shaped element which can be arranged on the protective cover and via which a fluid medium can be supplied to the cutting tool. The U-shaped element has a connection piece on which a coupling element can be arranged. On the coupling element a pipeline can be connected via which the fluid medium can be supplied to the U-shaped element through the connection piece. The coupling element can be turned about the axis of rotation of the connection pieces.
摘要:
A head for an orbital abrading machine comprising a housing, a shroud including inner and outer portions, defining a chamber between the inner and outer portions, a drive means for driving an abrading pad, the drive means at least partially enclosed by the housing and the shroud, wherein the drive means produces an exhaust which is directly vented into the chamber without leaving the head, and wherein the chamber includes at least one opening for directing the exhaust toward the abrading pad for cooling the pad with the exhaust.
摘要:
A head for an orbital abrading machine comprising a housing, a shroud including inner and outer portions, defining a chamber between the inner and outer portions, a drive means for driving an abrading pad, the drive means at least partially enclosed by the housing and the shroud, wherein the drive means produces an exhaust which is directly vented into the chamber without leaving the head, and wherein the chamber includes at least one opening for directing the exhaust toward the abrading pad for cooling the pad with the exhaust.
摘要:
The invention concerns a portable cutting machine (1), comprising a cutter unit (3) with a rotatable cutter member (4) in the form of a cutter disc or a saw disc, a cutter shaft for the rotation of the cutter member, a guard in the form of a protective housing (11) for said cutter member, at least one water nozzle (12) provided in the protective housing for the generation of one or more water jets in the space defined by the protective housing, said one or more water jets essentially laying the dust which is generated during the cutting operation and cooling the cutter member, the machine further comprising a power unit (2) and a first power transmission (7) between the power unit and the cutter shaft. The machine is characterized in that a water pump (20) is provided in or on the cutter unit (3) or inside a casing (9), which covers at least parts of said power transmission, and that the pump is powered directly by members belonging to said first power transmission or by the cutter shaft or indirectly by said members belonging to said first power transmission or by the cutter shaft