摘要:
A method of dressing a grindstone for processing an eyeglass lens, comprises the step of pressing a melamine resin foam, which is used as a dressing tool, against a rotating grindstone.
摘要:
A method of dressing a grindstone for processing an eyeglass lens, comprises the step of pressing a melamine resin foam, which is used as a dressing tool, against a rotating grindstone.
摘要:
An eyeglass lens processing apparatus for processing a peripheral edge of an eyeglass lens, includes: a processing unit including a plurality of processing tools that process the peripheral edge of the eyeglass lens held by a lens chuck shaft; a calibrating lens; a mode selector that selects a calibration mode; a memory that stores calibration processing data for processing the calibrating lens to a predetermined shape; a detecting unit that includes a tracing stylus that contacts a surface of the calibrating lens which is processed by the processing unit based on the calibration processing data to detect the shape of the processed calibrating lens in the calibration mode; and a calculating unit that obtain calibration data by comparing a detected result by the detecting unit with the calibration processing data in the calibration mode.
摘要:
In an eyeglass lens grinding apparatus, a material and a process condition of an eyeglass lens to be processed is input. A grinding wheel for grinding the lens is rotated at a variable rotational speed. That is, the lens is processed while variably changing the rotational speed of the grinding wheel in accordance with a preset value of the rotational speed of the grinding wheel based on the input material or a process condition of the lens. The processing, time period can be shortened and the quality of the process face can be improved.
摘要:
An eyeglass lens grinding machine for grinding the periphery of a lens to fit into an eyeglass frame includes a lens rotating section which holds and rotates the lens to be processed, a configuration data inputting section for entering the configuration data on the eyeglass frame or a template therefor, a layout data inputting section for entering data to be used in providing a layout of the lens corresponding to the eyeglass frame, a processing data calculating section for calculating processing data on the basis of the data entered by the configuration data inputting section and the layout data inputting section, a rotational speed varying section which, in at least a portion of the grinding process controls variably the rotational speed of the lens rotating section in accordance with the amount of processing as relative to the angle of rotation, and a control section for controlling to grind the lens on the basis of the processing data obtained by the processing data calculating section. The eyeglass lens grinding machine can shorten the time for processing lenses sufficiently to increase the processing efficiency while ensuring highly precise processing.
摘要:
In an eyeglass lens processing apparatus for beveling a peripheral edge of an eyeglass lens, if the high curve lens processing mode is selected by the mode selector, a computing unit acquires a high curve bevel path for locating the bevel apex on a front surface curve of the eyeglass lens or for locating the bevel apex at a position shifted by a predetermined quantity from the front surface curve toward the rear side on the basis of the edge position information acquired by the edge position detector, thereby providing high curve beveling data for the rear surface beveling grindstone, or for the front surface and rear surface beveling grindstones; and a beveling controller bevels the peripheral edge of the eyeglass lens by the rear surface beveling grindstone, or by the front surface and rear surface beveling grindstones on the basis of the high curve beveling data.
摘要:
An eyeglass lens grinding machine, which is designed to effectively utilize the grinding capability of abrasive wheels so as to perform efficient grinding operations. The eyeglass lens grinding machine includes a lens rotating section which holds and rotates a lens to be processed, an abrasive wheel rotating section which rotates an abrasive wheel for grinding the lens on its own axis, an abrasive wheel's rotational state detecting section which detects the state of rotation of the abrasive wheel caused by the abrasive wheel rotating section, and a rotation control section which variably changes the rotation of the lens rotating section on the basis of the result of the detection. The rotation control section issues a command to either stop or slow down the rotation of the lens if the load on the rotation of the abrasive wheel exceeds a predetermined reference level and issues a command to have the lens rotation return to the initial state if the load becomes lower than the reference level.
摘要:
In a lens grinding apparatus, shape data of an eyeglass frame and layout data of an eyeglass lens for the eyeglass frame are input. Edge positions of front and rear surfaces of the eyeglass lens are measured on the basis of the input data. The position variation information of the front and rear surfaces of the lens with respect to a radius vector is input. An inclination angle of a finishing grinding wheel is stored. Edge positions after a finishing process are calculated on the basis of the measured edge positions, the input position variation information, and the inclination angle of the finishing grinding wheel. A chamfering grinding wheel for chamfering edge portions of a finish-processed eyeglass lens is controlled on the basis of the edge positions obtained by the edge position calculation. A chamfering process is easily performed, and particularly chamfering is uniformly performed.
摘要:
An eyeglass lens processing apparatus includes: a mode selector for selecting an auxiliary lens processing mode; an eyeglass data input unit for inputting a first target lens shape of the eyeglass lens and a right target lens shape-to-left target lens shape distance; a first hole data input unit for inputting a position of a first hole, to which a first magnet is attached; a determination unit which determines second target lens shape of the auxiliary lens, a position of a second hole to which a second magnet is attached, positions of third holes to which a bridge is attached; and a processing controller which processes the auxiliary lenses based on the second target lens shape data, and drills the auxiliary lenses based on the second and third hole positions in the auxiliary lens processing mode.
摘要:
A lens grinding apparatus is improved to ensure that the angular edge portions of an eyeglass lens are easily ground to a desired shape. The improved lens grinding apparatus includes an input device for entering data on the processing shape of the lens, a detector for detecting the edge position of the lens on the basis of the entered shape data, a first calculator for determining processing data on the rough and fine processings of the lens on the basis of the detected edge position and the entered shape data, an angular edge portion processor which has a grinding wheel to process the angular edge portions of the finely processed lens and which moves the shaft of said grinding wheel relative to a shaft holding the lens, a second calculator which sets a plurality of zones of the lens and which performs different calculations in different zones such that the amount of processing the angular edge portions is determined in correspondence with the radius vector angle of the lens, and a controller for controlling the processing of the lens on the basis of the results of calculation by said first and second calculators.