Patent ID: 6317278
Filing Date: 2001-11-13
Classification: G02B

Abstract:
A precision-mechanical positioning device for positioning a second component (2) relative to a first component (1) in any of the directions (Ri) perpendicular to one combined straight line (3) connecting the components, the positioning device comprising:a solid basic member (5) integrated in the first component and having a first planar sliding surface (7) perpendicular to the said straight line;a support member (6) integrated in the second component and having a second planar sliding surface (8);the support member being connected with the basic member such that the second sliding surface bears against the first sliding surface, thus forming a pair of sliding surfaces (7, 8); andthe support member comprising at least two holes (9) transverse to the plane (T) of the pair of sliding surfaces, locking means (4) extending through these holes to the basic member, the locking means comprising shanks (10), whose thicknesses (D2) in a direction transverse to the length of the holes are smaller than the hole diameters (D1), and clamping means (11) for pressing the support member into immobile contact with the basic member after the positioning has been completed, characterized in that in the positioning device, a layer of fatty lubricant (S1) is provided between the first sliding surface (7) and the second sliding surface (8), the layer generating a first friction (U1) between these sliding surfaces, that a bushing (20) and/or washers (22) or the like are provided between the clamping means (11) and the support member (6), these means generating a second friction (U2) between the clamping means and the support member, and that the first friction (U1) is substantially higher than the second friction (U2) to prevent the support member (6) from shifting relative to the basic member (5).