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. 29, 1990
Filed:
Jun. 15, 1988
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An apparatus for working an aspherical surface on a workpiece including a mechanism for adjusting a position of a workpiece in a horizontal direction, a rotary table having a vertical axis of rotation rotatably mounted on the adjusting mechanism, the rotary table including a work chuck for holding a workpiece on the rotary table, a spindle having a tool on a lower end thereof, a mechanism for rotating the spindle around an axial direction thereof and a compressed spring for supporting the spindle. A first mechanism adjusts a position of the tool in the axial direction of the spindle, the first mechanism including a sliding plate for sliding the spindle in the axial direction thereof. A second mechanism includes an axial mechanism for rotating the first mechanism about a horizontal axis of rotation perpendicular to the axial direction of the adjusting mechanism, the second mechanism supporting the first mechanism at one end of the axial mechanism, the second mechanism further including a balancer for balancing the first mechanism at the other end of the axial mechanism. A guide roller engages the balancer to position the second mechanism in a rotational position around the horizontal axis of rotation of the axial mechanism. A rotary encoder detects the rotational position of the second mechanism and a third mechanism adjusts a position of the second mechanism together with the first mechanism in a vertical direction.