# US 5,706,567 A · Method of surface finishing of metal moldings > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,706,567 A - Document ID: US5706567A - Status: Granted - Kind: A - Application number: 08/435,212 - Filed: 1995-05-05 - Granted: 1998-01-13 - Earliest claimed: 1992-06-26 - Assignees: Asahi Tec Corporation; BBF Yamate Corporation - Inventors: Tetsuya Sakagami; Shigesaburo Asai; Shuji Kawasaki - Web page: https://patentgrep.com/patent/US5706567A ## CPC - B24B 1/00: Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes - B24B 1/002: {using electric current (B24B37/046 and B23H5/08 take precedence)} - B24B 29/02: designed for particular workpieces - B24B 37/00: Lapping machines or devices; Accessories (B24B3/00 takes precedence) - B24B 37/046: {using electric current} - B60B 3/06: formed by casting - Y10T 29/49496: Disc type wheel - Y10T 29/49503: Integral rim and disc making - Y10T 29/4998: Combined manufacture including applying or shaping of fluent material - Y10T 29/49988: Metal casting - Y10T 29/49989: Followed by cutting or removing material - Y10T 428/24942: including components having same physical characteristic in differing degree - Y10T 428/31612: As silicone, silane or siloxane - Y10T 428/31681: Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.] - Y10T 428/31692: Next to addition polymer from unsaturated monomers - Y10T 428/31699: Ester, halide or nitrile of addition polymer - B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS - B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method for producing a vehicle wheel having a polished design surface coated with a transparent coating, comprising the following steps of: producing a vehicle wheel having a design surface thereon; and coating said design surface with transparent composite material which is mainly composed of inorganic material. ## Claims ### Claim 1 A method for finishing a surface of a metal molded article, comprising: in a final surface finishing step for the molded article, a first polishing step for polishing the molded article by bringing a circumferential surface of a soft buff into contact with a surface of the molded article while supplying the molded article with a polishing liquid to which a polishing powder has been added. ### Claim 2 (depends on 1) The method according to claim 1, further comprising: in said surface finishing step, a second polishing step for polishing the molded article by bringing an end face of the soft buff into contact with the surface of the molded article while supplying the molded article with the polishing liquid to which the polishing powder has been added, said second polishing step being carried out simultaneously with said first polishing step. ### Claim 3 A method for finishing a surface of a metal molded article, comprising the following steps: a preliminary finishing step for polishing the molded article by using a buff device having a soft buff and bringing a circumferential surface of the soft buff into contact with a surface of the molded article while supplying the molded article with a polishing liquid to which a polishing powder has been added; after said preliminary finishing step, a first polishing step for polishing the molded article by bringing the circumferential surface of the soft buff into contact with the surface of the molded article while supplying the molded article with the polishing liquid to which the polishing powder has been added; and a second polishing step for polishing the molded article by bringing an end face of the soft buff into contact with the surface of the metal molded article while supplying the molded article with the polishing liquid to which the polishing powder has been added, said second polishing step being carried out after said first polishing step. ### Claim 4 (depends on 3) The method according to claim 3, further comprising the step of: providing electrodes for the buff in said preliminary finishing step, and applying a DC current and voltage between the electrodes and the molded article for electrolyte machining simultaneous with said preliminary finishing step. ### Claim 5 A wet buff machining method comprising the steps of: supplying a polishing liquid having a grinding powder onto a surface of a workpiece; and bringing the workpiece into contact with a buff mounted on a rotary shaft for polishing the surface of the workpiece; wherein one of the buff and the workpiece is moved so that a space between the buff and the surface of the workpiece is increased during polishing while continuing to supply the polishing liquid, and thereafter moving the buff to approach the surface of the workpiece and to contact the surface of the workpiece with a pressure while continuing to supply the polishing liquid. ### Claim 6 (depends on 5) The method according to claim 5, wherein the buff is moved to be separated relative to the surface of the workpiece. ### Claim 7 (depends on 6) The method according to claim 6, wherein the workpiece is fixed to a rotary table that is drivingly rotatable in a forward direction and a reverse direction, and wherein the buff is moved relative to the surface of the workpiece in accordance with the reversal of the rotary drive direction of the rotary table. ### Claim 8 (depends on 7) The method according to claim 7, wherein the rotary drive direction of the rotary shaft is reversed is accordance with the reversal of the rotary drive direction of the rotary table, and the rotary direction of the rotary table and the rotary direction of the rotary shaft are kept in the same direction. ### Claim 9 (depends on 6) The method according to claim 6, wherein the rotary drive direction of the rotary shaft is reversed in accordance with the separation of the buff relative to the surface of the workpiece. ### Claim 10 (depends on 6) The method according to claim 6, wherein the steps of contacting and moving the buff are intermittently and repeatedly carried out during polishing. ### Claim 11 (depends on 5) The method according to claim 5, wherein the steps of contacting and moving the buff are intermittently and repeatedly carried out during polishing. ### Claim 12 A method for finishing a surface of an article made of metal, comprising the steps of: effecting a dry buffing to the surface of the article; and after said step of effecting a dry buffing, effecting a wet buffing to the surface of the article. ### Claim 13 (depends on 12) A method for finishing a surface of an article made of metal as recited in claim 12, further comprising a step of, after said step of effecting a wet buffing, forming a transparent coating film made mainly of inorganic material on the surface of the article.