Abstract:
A grinding wheel assembly has a support disk centered on an axis and having an outer edge and a pair of axially opposite faces. An annular abrasive ring is juxtaposed with the outer edge, and a flexible hinge formation joins the ring to the outer edge of the disk at one of the faces. An actuator body of controlledly radially variable dimension joins the ring to outer edge of the disk at the other of the faces for deforming the ring and flexing the hinge formation so as to vary a shape of an outer face of the ring radially of the axis. Thus with this system the exact shape of the outer face of the abrasive ring can be controlled remotely. The control can be very accurate, and can be monitored by sensors in a feedback system to ensure exact position of the outer ring surface.
Abstract:
A plurality of click portions is formed integrally with a unit body. The click portions are arranged on a common circular track, and a dial is engaged with the click portions so as to be unstable and to be prevented from slipping off. Therefore, it is not necessary to provide a D spring for coupling the dial to a shaft so as to be unstable and to be prevented from slipping off. Consequently, it is possible to reduce the number of components and a cost.
Abstract:
The present invention relates to a method and an article for rapidly polishing a glass workpiece surface using a structured abrasive article including cerium oxide particles dispersed in a binder. The abrasive article for rapid polishing of a glass workpiece comprising a backing and at least one polishing layer. The polishing layer comprises cerium oxide particles dispersed within a binder. The binder provides the attachment means of the at least one polishing layer to the backing. The abrasive article is capable of reducing an initial Rtm of about 0.8 .mu.m or greater on a glass test blank to a final Rtm of about 0.3 .mu.m or less in about one minute using an RPE procedure defined herein. The present invention is also directed to a method of polishing a glass workpiece using the present abrasive article.
Abstract:
An automotive aluminum wheel abrading/polishing tool is disclosed. The abrading/polishing tool includes a substantially circular, resilient, central layer of non-woven material. A first plurality of individual, circumferentially offset, layers or strips of scored sandpaper or other coated abrasive material are secured to a first side of the non-woven material. A second plurality of individual, circumferentially offset, layers or strips of scored sandpaper or other coated abrasive material are secured to a second side of the non-woven material. The strips of abrasive material function in the removal of burrs or excess aluminum, and the non-woven material produces a uniform finish by polishing a work piece surface. The strips of abrasive material and the non-woven material cooperate to define an axially resilient circumferential end edge which effectively abrades and polishes highly contoured workpiece surfaces. In addition, the abrading/polishing tool maintains a pre-determined abrasive grit rating as the tool is radially worn away during use.
Abstract:
A tool for processing holes has a shaft which can be clamped in a drive element for executing a forward stroke into a working position within a hole, a return stroke, and an at least rotating working motion of the tool, two support elements arranged on the shaft, wires clamped at one end of the shaft between the support elements and being sprung bowing away from the shaft in an arc shape, the wires being coated with a cutting medium. One of the support elements is axially adjustable relative to the shaft. The shaft has axially positioned slots distributed on a circumference in two regions axially offset from one another. The shaft also has an axial hole leading out from both ends of the shaft and extending into the regions. The support elements are formed as limit stops inserted in the axial hole and each end just short of an entry of the hole into an area of the slots. The wires have ends extending through the slots and coming to rest on the limit stops.
Abstract:
Descaler head assembly having peripherally successive and longitudinally successive series of descaler elements (11, 12). The assembly is made up of a central support shaft (15) which is securely threaded through a series of mutually separate, rigid holding elements (10) for connecting elements (13, 14) of the descaler elements (11, 12) for rotation therewith, the connecting elements being fastened in pairs or groups to the holding elements (10). The connecting elements are each in the form of a relatively short piece of chain, piece of wire or similar flexible means and are connected to the holding elements at a considerable distance from the axis of rotation of the shaft. The position of the connecting elements relative to each other is determined by the angularly set positions of the holding elements and axially set positions on the support shaft (15). The holding elements (10) are fastened together in an axial direction by means of regulatable tightening means (17) on the support shaft (15) or on, if desired, extra fastening laths (34) between the holding elements.
Abstract:
A rotating grinding or polishing device includes a number of grinding or polishing discs formed of two or more layers of segments radiating from a central retaining area having an edge which defines a central hole. In the central area, the segments are kept together by a heat-activatable string which also maintains the grinding or polishing disc in the form of a ring, whereby the disc has the required optimum stiffness/flexibility for obtaining an effective grinding or polishing finish so that even complex surfaces can be effectively ground or polished.
Abstract:
An elastic grinding element for form-true grinding including a supporting layer of elastomer material and an adhesive grit layer bound to the supporting layer and having an active grinding surface made of a hardened mixture of binder and abrasive grit. The process for making the grinding element includes providing a mold having a shape constructed to produce a desired shape for the grinding element, putting the mixture of binder and abrasive grit and the elastomer material in the mold, and accelerating the mixture of binder and abrasive grit and the elastomer material while in the mold.
Abstract:
A grinding- or polishing implement can be produced by providing a rectangular sheet (1) at both sides with segments (2) formed by slits from the outside towards the center. Hereafter the sheet is folded around the center across a glue string (5), and then the two folding edges are folded together and glued together for the formation of a closed ring. This ring can thereafter be placed on a spindle (6) preferably between retaining discs (8).In this way raw material can be saved in the production of rings, just as the rings can be used more economically in an implement as the grinding qualities are improved through the big number of segments, their completely uniform size and placing along the periphery of the implement and their ability to adjust and shape themselves according to the prepared members.An implement can be produced by disposing such rings between retaining discs (8) on a rotating spindle (6), and in order to secure the rings the spindle (6) can at its end have one or more guide facings (10), in which a co-operating guide pin (12) on a disc (7) can slide and be axially displaced by being tightened together with a bolt (11).
Abstract:
A ROTATABLE CUTTING TOOL COMPRISES CUTTERS FORMED BY PIECES OF WIRE FASTENED TOGETHER AT ONE OF THE ENDS THEREOF WHILE THEIR OTHER FREE ENDS FORM THE WORKING SURFACE OF THE TOOL IN THE SHAPE OF A SURFACE OR REVOLUTION. THE SIDE SURFACES OF THE WIRE PIECES ARE PRESSED AGAINST EACH OTHER AT THEIR FASTENED ENDS WHILE ALONG THEIR REMAINING LENGTH THE WIRE PIECES ARE COMPRESSED LATERALLY BY RINGS IN THE FORM OF A TRUNCATED CONE AT THE SIDE FACING THE WIRES SUCH THAT THE RATIO OF THE SUM OF THE FACE AREAS OF THE CUTTING TIPS OF THE WIRE TO THE ENTIRE AREA OF THE WORKING SURFACE IS BETWEEN 0.10 AND 0.93.