The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2017
Filed:
Nov. 28, 2013
Oy Kwh Mirka Ab, Jeppo, FI;
Göran Höglund, Jeppo, FI;
OY KWH MIRKA AB, , FI;
Abstract
The present invention relates to a method and an arrangement for grinding spherical products (), such as e.g. bowling balls, in particular. Such an arrangement comprises at least one grinding machine () having a spherically oscillating grinding movement. A fastening plate () fitted on the grinding machine has a spherically shaped bearing surface () and a grinding product () fitted on this, which through its slits () adopts a position with accuracy of shape on the spherically shaped surface. The grinding product () will form a contact surface () in the interface, in which the grinding product cooperates with the spherical product. This contact surface then adopts a radius of curvature arranged to substantially correspond to the radius (r) of the spherical product (). The grinding is performed with a spherically oscillating grinding movement, which is adapted to the radius of the spherical product and simultaneously coincides with the radius of curvature of the contact surface.