Nidek Co., Ltd.

Hirokatsu Obayashi

Toshiaki Mizuno

Ryoji Shibata

Kyoji Takeichi

Motoshi Tanaka

Yoshinori Matsuyama

Mikio Kurachi

Takayasu Yamamoto

Yuya Nakako

Toshiro Matsumoto

Tadamasa Yamamoto

Yoshiaki Kamiya

There is provided an eyeglass lens processing apparatus including a first rotational shaft which holds and rotates an eyeglass lens, a finishing tool, a chamfering tool which performs chamfering on an angular portion of an edge of the eyeglass lens, a second rotational shaft to which the chamfering tool is attached, an adjustment unit which adjusts a relative positional relationship between the first rotational shaft and the second rotational shaft, a chamfering angle setting portion which sets a chamfering angle formed between a rotational center axis of the first rotational shaft and a processing tool surface, an edge information acquisition portion which acquires information regarding an edge surface shape of the eyeglass lens, an angle correction portion which corrects the chamfering angle based on the information regarding the edge surface shape, and a control portion which controls the adjustment unit and performs chamfering based on the corrected chamfering angle.

Eyeglass lens processing apparatus and eyeglass lens processing program

An eyeglass lens processing apparatus for processing a periphery of an eyeglass lens includes: a lens chuck shaft configured to chuck the eyeglass lens; a shaft angle changing portion configured to change a shaft angle of the lens chuck shaft; a first processing tool unit including at least one spindle at which a first processing tool is provided; a second processing tool unit that is disposed to oppose the first processing tool unit and that includes at least one spindle at which a second processing tool is provided; and a controller configured to change one of the first and second processing tool unit to be used for processing the eyeglass lens to the other of the first and second processing tool by controlling driving of the shaft angle changing portion to change the shaft angle of the lens chuck shaft.

Eyeglass lens processing apparatus

An eyeglass lens processing system includes: a plurality of processing devices including first and second processing devices, each of the first and second processing devices including a lens processing unit configured to process an eyeglass lens and a processing control unit configured to control the lens processing unit; a memory unit configured to store first processing information based on which the first processing device performs a first process on the eyeglass lens; and a processing setting unit that includes a setting unit configured to set, for each of the first and second processing devices, correction data based on which the first processing information is to be corrected to acquire second processing information. One of the first and second processing devices performs a second process on the eyeglass lens based on the second processing information.

Eyeglass lens processing system and eyeglass lens processing method

An eyeglass lens processing apparatus includes a lens chuck unit that holds an eyeglass lens; a processing unit that has a processing tool to process the eyeglass lens held by the lens chuck unit; and an adjustment unit that adjusts a relative distance between the eyeglass lens and the processing tool. The eyeglass lens processing apparatus operates the processing unit and processes the eyeglass lens by operating the adjustment unit based on processing data. The eyeglass lens processing apparatus includes a check unit that checks whether or not the eyeglass lens is properly processed in a state where the eyeglass lens is held by the lens chuck unit.

An eyeglass lens processing apparatus includes a processing control unit () which in the soft processing mode, roughs the lens such that the torque threshold value is set to a value T&#x3b8;s lower than the threshold value T&#x3b8;N of a normal processing mode, and when torque detected by a sensor unit does not exceed the threshold value T&#x3b8;s, a axis-to-axis distance varying unit or a lens rotating unit is controlled so that a cutting amount per rotation of the lens reaches a threshold cutting amount, and when the detected torque exceeds the threshold value T&#x3b8;s, the axis-to-axis distance varying unit or the lens rotating unit is controlled so that the torque becomes lower than the threshold value T&#x3b8;s to decrease the threshold cutting amount.

An eyeglass lens processing apparatus includes: a processing tool which processes a peripheral edge of the lens and includes a roughing tool, a beveling tool and a bevel-modifying tool; a selection unit which is used to select a high curve beveling mode for forming a bevel in the lens fitted into a high curve frame having a protrusion portion; a modifying portion data input unit inputs data of a portion to be modified so as to prevent an interference between the lens and the protrusion portion; a calculation unit which obtains bevel-modifying data on the basis of a bevel path and data of the modifying portion; and a processing control portion which performs the beveling to the lens by the beveling tool in accordance with the beveling data, and removes a part of the bevel shoulder and/or the bevel slope by the bevel-modifying tool in accordance with the bevel-modifying data.

An eyeglass lens processing apparatus includes: an edge position detector which detects front and rear edge positions of an eyeglass lens based on target lens shape data; a bevel locus setting unit which includes: a) a provisional bevel locus calculator which obtains a provisional bevel locus by obtaining a bevel curve substantially equal to a frame curve; b) a nose-side bevel position determining unit which determines a corrected bevel apex position at a nose-side edge position; c) an ear-side bevel position determining unit which determines a corrected bevel apex position at an ear-side edge position; and d) a corrected bevel locus calculator which obtains a corrected bevel locus which has a curve value equal to the bevel curve; and a processing controller which obtains beveling information based on the corrected bevel locus and controls an operation of the apparatus according to the beveling data.

An eyeglass lens processing apparatus comprising:

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.

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.

Method of dressing grindstone for processing eyeglass lens, and dressing tool used in the method

An eyeglass lens processing apparatus includes: a piercing unit that includes a piercing tool for piercing a hole in an eyeglass lens; a first input unit that inputs position data and depth data of a non-through hole to be formed in a refractive surface of the lens; a detecting unit that detects a position of a front end of the piercing tool; and a control unit that controls a process of forming the non-through hole based on the detected front-end position data, and the input position data and the input depth data.

An eyeglass lens processing apparatus includes: a hole forming portion that includes a hole forming tool which forms a hole for attaching a rimless frame in an eyeglass lens; and breakage detector that detects whether or not the hole forming tool is broken.

An eyeglass lens processing apparatus for processing an eyeglass lens includes: a lens chuck that holds the lens; a roughing tool; a finishing tool; a finishing data input unit that inputs finishing data; a water supply unit that supplies water to a portion being processed of the lens; a first temperature sensor that senses temperature of the water to be supplied; and an operating unit that corrects the input finishing data based on the temperature sensed by the first temperature sensor.

Eyeglass lens processing apparatus and method of processing eyeglass lens

A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.

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Toyokawa, Japan

Hirokatsu Obayashi