摘要:
An initial position setting method for grinding work apparatus includes: a grind stone 11; a pair of lens rotating shafts 14, 14 which are capable of approaching and drawing apart each other along a normal line of the grind stone 11; a ditch excavation grind stone 23 and chamfering grind stones 24, 25. A measurement standard 70 with a predetermined shape is adapted to be held by the lens rotating shafts 14, 14. The ditch excavation grind stone 23 and the chamfering grind stones 24, 25 are adapted to be moved to the predetermined position. The lens rotating shafts 14, 14 are adapted to be moved in order for the measurement standard 70 to contact with the ditch excavation grind stone 23 or the chamfering grind stones 24, 25 to obtain a moving distance of the lens rotating shafts 14, 14 when the measurement standard 70 is contacted and to carry out an initial setting for moving distance of the ditch excavation grind stone or the chamfering grind stones on a basis of the moving distance of lens rotating shafts 14, 14 and a dimension of the measurement standard.
摘要:
Disclosed is a grinding fluid supply device of a lens grinding apparatus. The grinding fluid supply device includes first grinding fluid supply means for supplying a grinding fluid in a tangent direction of a circular grinding wheel, which has a grinding surface formed on its circumferential surface, with an interval above a grinding surface and allows an upper portion and a rear side portion of the grinding surface to be covered with a curtain of the grinding fluid spaced from the grinding wheel when a processed lens is subjected to a grind processing with the grinding surface of the grinding wheel by rotatively driving the grinding wheel around an axis; and second grinding fluid supply means for insufflating the grinding fluid to the grinding surface.
摘要:
A lens shape data processing apparatus and a lens grinding machine having the same apparatus in which the lens shape data reading out and the layout setting work for another spectacle lens can be conducted during the lens edge measurement or the grinding process is provided. The lens shape processing apparatus comprises a memory 33 for storing a plurality of lens shape information for the spectacle frame measured by a frame reader 2, a liquid crystal display unit 7 including an image display section 7b for displaying the lens shape based on the lens shape information and an operation contents display section 7c for displaying items for switching a plurality of screens, a plurality of keys corresponding to the items of the operation contents display section 7c, and an arithmetic control circuit 31 for setting the data for grinding an unprocessed lens into a lens shape based on the lens shape information, wherein the keys are used both to switch to a screen for selecting and accessing one of the lens shape information stored in the memory 33, and to access the preceding lens shape information and the next lens shape information or new lens shape information.
摘要:
A lens shape measuring apparatus is disclosed, which is capable of identifying a size of an outer-diameter shape of a lens fixing jig by using a measuring element also used for measuring a lend shape. This lens shape measuring apparatus comprising: a lens fixing jig installed in an eyeglass lens to be processed to clamp the eyeglass lens; a lens rotation shaft for clamping and rotating the lens to be processed; a measuring element abutted on a refracting surface of the lens clamped by the lens rotation shaft; a measuring element position switching mechanism for controlling rotation of the measuring element around a rotation shaft roughly parallel to the lens rotation shaft; and a measuring unit for measuring a moving distance of the measuring element in a direction roughly parallel to the lens rotation shaft. This lens shape measuring apparatus also comprises arithmetic control means for moving a tip of the measuring element relatively in the direction roughly parallel to the lens rotation shaft, measuring a distance from a measuring reference position of the measuring element to an abutting position of the same by the measuring unit, and identifying a shape of the lens fixing jig based on a result of the measurement.
摘要:
An apparatus for processing a chamfering of an eyeglass lens, including means for inputting a width of the chamfering and a range of the chamfering from a periphery of a lens shape at at least one position adjacent to a nose or far away from the nose, arithmetic control means for obtaining a trace for the chamfering on a refractive surface of the eyeglass lens and obtaining the position of the edge end of the eyeglass lens after the processing of the chamfering, and means for displaying the trace of the chamfering by overlapping the lens shape.
摘要:
An apparatus for processing a chamfering of an eyeglass lens, including means for inputting a width of the chamfering and a range of the chamfering from a periphery of a lens shape at at least one position adjacent to a nose or far away from the nose, arithmetic control means for obtaining a trace for the chamfering on a refractive surface of the eyeglass lens and obtaining the position of the edge end of the eyeglass lens after the processing of the chamfering, and means for displaying the trace of the chamfering by overlapping the lens shape.
摘要:
A method for processing a chamfering of an eyeglass lens, including the steps of inputting a width of the chamfering and a range of the chamfering from a periphery of a lens shape at a position adjacent to a nose and/or a position far away form the nose, obtaining a trace of the chamfering on a refractive surface of the eyeglass lens and displaying the trace of the chamfering by overlapping the lens shape.
摘要:
[Purpose] To provide edible fat and oil that can further improve blooming resistance, and chocolate having further improved blooming resistance than that of conventional chocolate. [Constitution] Edible fat and oil obtained by transesterification reaction or esterification reaction and satisfying the following requirements (A) to (D): (A) iodine value: 15 to 29; B) amount of trans fatty acids in the constituent fatty acids: 16 to 29% by mass; (C) amount of lauric acid in the constituent fatty acids: 13 to 28% by mass; and (D) total amount of oleic acid, linoleic acid, and linolenic acid in the constituent fatty acids: less than 10% by mass.
摘要:
A fat-and-oil composition comprising fats-and-oils A and B, and C and/or E, all being derived from vegetable fats-and-oils, the composition satisfying conditions (a), (b) and (c): A: at least one of lauric fats-and-oils, and fractionated, extremely hardened or transesterified oils of lauric fats-and-oils, B: a liquid oil, C: a transesterified oil of D derived from vegetable fats-and-oils, D: a fat-and-oil wherein the contents of saturated fatty acids and unsaturated fatty acids having 16 or more carbon atoms in all the constitutive fatty acids being 20%≦ but
摘要:
A lens shape measuring apparatus is provided which comprises lens rotating shafts (16, 17) for rotatably holding an uncut lens, a feeler (63, 219, 220) disposed in contact with a working locus of the front or rear surface of the lens, and a calculation/control circuit (100) for detecting a difference in surface level of the lens from a change in data measured by the feeler (63, 219, 220) and controlling the contact of the feeler with the lens