摘要:
A method for trimming or dressing the filaments of abrasive finishing tools to an exact and uniform length to create a precision face by means of a rotatable turntable having a cutting surface upon which a finishing tool may be axially mounted and fixedly engaged. A circular cutting blade positionally adjustable relative to the filament ends, trims the filaments by cutting action of the blade in compressive contact with the filaments against a slightly yieldable cutting surface upon rotation of the turntable, the cutting blade counter rotating without power and being self-sharpened upon contact with the abrasive filaments.
摘要:
An extruded plastic strip contains abrasive grains or minerals embedded homogeneously therein throughout is scored along the machine or extrusion axis direction, such scoring including elliptical or pointed perforations with the long axis or generally pointed ends aligned with the scoring and parallel to the machine or extrusion axis. The preferred plastic material is a 612 nylon, although other plastics may be employed. The material is heat workable, yet relatively stiff and can be used to form a wide variety of power driven abrasive tools such as shown in applicant's prior application Ser. No. 07/471,385 filed Jan. 29, 1990 entitled "Abrasive Tool and Method of Making", now U.S. Pat. No. 5,155,945. The present application also discloses a rotary wheel type tool utilizing the perforated strip, and a method of making that tool using a gel type cyanoacrylate as an adhesive. With the strip of the present invention, rotary wheel tools as well as many other tools can economically be produced. In tool use, the strip fractures along the scoring and perforations to provide a tool having closely packed individual rectangular fingers, each with a major flat side facing the direction of rotation.
摘要翻译:挤出的塑料条含有沿着机器或挤出轴线方向被均匀地嵌入的磨料颗粒或矿物,其中包括椭圆形或尖锐的穿孔,其中长轴线或大致尖端与刻痕对齐并平行于机器或挤出轴线 。 优选的塑料材料是612尼龙,尽管可以使用其它塑料。 该材料是热可加工的,但相对较硬,并且可用于形成各种动力驱动的研磨工具,如申请人先前申请的Ser。 1990年1月29日提交的题为“Abrasive Tool and Method of Making”的美国专利No.07 / 471,385,现为美国专利 第5,155,945号。 本申请还公开了利用穿孔带的旋转轮式工具,以及使用凝胶型氰基丙烯酸酯作为粘合剂制造该工具的方法。 利用本发明的条带,可以经济地生产旋转轮工具以及许多其他工具。 在工具使用中,钢带沿着刻痕和穿孔断裂,以提供具有紧密包装的单个矩形手指的工具,每个具有面向旋转方向的主平面。
摘要:
A rotary finishing tool and a method for making the same characterized by a rolled or coiled strap of plastic material with abrasive homogeneously embedded throughout. The coiled strap is secured to the bottom interior surface of a cup element by a thin layer of liquid quick setting or instant adhesive. The strap may include transverse slits or serrations to provide the degree of flexure desired and/or to provide fracture lines. To make the tool, a longitudinally extending strap of an abrasive containing plastic material is heated and rolled along its longitudinal axis thereby forming a lightly coiled strap. A cup element is supported and the coiled strap is driven into the cup element whereby one end face of the coiled strap is driven into contact with a thin layer of the instant adhesive. Upon curing of the adhesive, the one end face is secured to the bottom interior surface of the cup element, and the opposite or outer end face becomes the working face of the tool.
摘要:
An adhesive bonded flexible abrasive finishing tool and method of making the same includes a cup-shape shank of plastic or metal. Flexible nylon abrasive loaded monofilaments of uniform length are formed into a cylindrical bundle. A measured amount of liquid instant cyanoacrylate adhesive is placed into the bottom of the cup portion of the shank and the bundle of monofilaments is driven as a group endwise by a pressure plate through a split funnel mounted on the lip of the cup so that one end of the bundle and thus each monofilament is driven uniformly into the adhesive which then cures rapidly. The monofilaments may preferably be straight or somewhat crimped or wavy and may vary in sectional configuration and abrasive loading. The resulting brush or finishing tool is a low cost light weight tool having improved distribution and density of filaments and a flat even face without a final trimming operation. The tool is ideally suited for automated or robotics finishing operations.
摘要:
A twisted stem helical internal abrading and finishing tool is formed from abrasive containing plastic strips having transverse offset slits along the lateral edges and a longitudinal middle unslit portion. The strips may be stacked with the longitudinal middle unslit portions aligned with the longitudinal axis of a cotter pin, one end of the stack being placed in the bight of the cotter pin. The cotter pin is twisted about its longitudinal axis to form a helical twisted stem from which the slit lateral side or edges extend forming rectangular abrasive fingers uniformly helically arranged. The end of the cotter pin opposite the bight may be inserted into the chuck of a drilling or turning machine to hold and rotate the tool about the axis of the stem.
摘要:
An extruded plastic strip contains abrasive grains or minerals embedded homogeneously therein throughout is scored along the machine or extrusion axis direction, such scoring including elliptical or pointed perforations with the long axis or generally pointed ends aligned with the scoring and parallel to the machine or extrusion axis. The preferred plastic material is a 612 nylon, although other plastics may be employed. The material is heat workable, yet relatively stiff and can be used to form a wide variety of power driven abrasive tools. The present application also disclosed a rotary wheel type tool utilizing the perforated strip, and a method of making that tool using a gel type cyanoacrylate as an adhesive. With the strip of the present invention, rotary wheel tools as well as many other tools can economically be produced. In tool use, the strip fractures along the scoring and perforations to provide a tool having closely packed individual rectangular fingers, each with a major flat side facing the direction of rotation.
摘要:
A rotary finishing tool and a method for making the same characterized by a rolled or coiled strap of plastic material with abrasive homogeneously embedded throughout. The coiled strap is secured to the bottom interior surface of a cup element by a thin layer of liquid quick setting or instant adhesive. The strap may include transverse slits or serrations to provide the degree of flexure desired and/or to provide fracture lines. To make the tool, a longitudinally extending strap of an abrasive containing plastic material is heated and rolled along its longitudinal axis thereby forming a lightly coiled strap. A cup element is supported and the coiled strap is driven into the cup element whereby one end face of the coiled strap is driven into contact with a thin layer of the instant adhesive. Upon curing of the adhesive, the one end face is secured to the bottom interior surface of the cup element, and the opposite or outer end face becomes the working face of the tool.
摘要:
A honing tool characterized in one form by an elongated rectangular cup element or holder having a bottom interior surface, a bundle of closely packed relatively short discrete generally parallel abrasive containing filaments secured in the holder, and a layer of instant gel adhesive securing all of the filaments at one end face of the bundle to the bottom interior surface of the holder. To make such a honing tool, a measured bundle of uniformly closely packed nonwoven, generally parallel discrete filaments is formed. A holder is supported and a measured amount of gel adhesive is placed in the bottom interior of the holder so that a layer of such adhesive completely covers the bottom of the interior of the holder. The bundle is then promptly driven into the holder so that all of the filaments at one end of the bundle are in contact with the adhesive prior to the curing of the adhesive. The adhesive is then cured. In another form a rectangular bundle of abrasive containing strips is formed, each having a slit or scored lateral edge. The plastic strips may be formed into bundles by ultrasonic welding through the unslit or unscored root portions of each strip. The bundle is driven into the holder to be secured by the gel adhesive in the same manner. In either form there is produced a rectangular or oblong honing tool which is provided with relatively short fingers closely packed not only within the holder but also at the working face. The improved tool has a somewhat soft or flexible working face as compared to a conventional honing stone or clad steel tool and will not contaminate the surface being honed. The tool provides an improved surface topography whether used as a finish hone or in a tertiary operation.
摘要:
A plastic strap or tape having granular abrasive embedded homogeneously throughout is cut, shaped and formed into a variety of abrasive finishing tools. The plastic working element is preferably rather stiff 6/12 nylon and contains about 30 to 45% by weight of abrasive material. The strap or tape is formed by extrusion of such non-elastomeric plastic through a ceramic die opening and as extruded has an indefinite length in the machine direction, a controlled uniform thickness, and a width which is approximately 5 to 50 times or more the thickness. A preferred width to thickness ratio is about 30:1, or about 3 cm to 1 mm. The strap or tape may be cut to the desired length and partially embossed, serrated or scored either lengthwise or transversely to provide fracture or flex lines. The spacing of the serrations or score lines control the degree of flexibility or aggressiveness of the tool working face. The invention includes a variety of tools formed from the abrasive strap or tape and these include radial or flap wheels, both serrated and non-serrated, and internal tools using a rotatable stem, also both serrated and non-serrated.
摘要:
A honing tool characterized in one form by an elongated rectangular cup element or holder having a bottom interior surface, a bundle of closely packed relatively short discrete generally parallel abrasive containing filaments secured in the holder, and a layer of instant gel adhesive securing all of the filaments at one end face of the bundle to the bottom interior surface of the holder. To make such a honing tool, a measured bundle of uniformly closely packed nonwoven, generally parallel discrete filaments is formed. A holder is supported and a measured amount of gel adhesive is placed in the bottom interior of the holder so that a layer of such adhesive completely covers the bottom of the interior of the holder. The bundle is then promptly driven into the holder so that all of the filaments at one end of the bundle are in contact with the adhesive prior to the curing of the adhesive. The adhesive is then cured. In another form a rectangular bundle of abrasive containing strips is formed, each having a slit or scored lateral edge. The plastic strips may be formed into bundles by ultrasonic welding through the unslit or unscored root portions of each strip. The bundle is driven into the holder to be secured by the gel adhesive in the same manner. In either form there is produced a rectangular or oblong honing tool which is provided with relatively short fingers closely packed not only within the holder but also at the working face. The improved tool has a somewhat soft or flexible working face as compared to a conventional honing stone or clad steel tool and will not contaminate the surface being honed. The tool provides an improved surface topography whether used as a finish hone or in a tertiary operation.