Eyeglass lens processing apparatus and eyeglass lens processing program

• US 10,459,423 B2
• Filed: 03/27/2017
• Issued: 10/29/2019
• Est. Priority Date: 03/28/2016
• Status: Active Grant

• Current Assignee: Nidek Company Limited
• Original Assignee: Nidek Company Limited
• Inventors: Takeichi, Kyoji
• Primary Examiner(s): Dunn, Darrin D
• Application Number:
  US15/469,957
• Publication Number:
  US 20170277161A1
• Time in Patent Office: 946 Days
• CPC Class Codes: B24B 49/04 involving measurement of the workpiece at the place of grinding during grinding operation
• CPC Class Codes: B24B 9/142 for contact lenses
• CPC Class Codes: B24B 9/148 electrically, e.g. numerically, controlled
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G05B 19/29 for point-to-point control
• CPC Class Codes: G05B 2219/45175 Glasses, spectacles

Abstract

An eyeglass lens processing apparatus includes: a processing tool configured to process a periphery of a lens; a movement portion configured to change a relative position between the lens and the processing tool; a positional data acquiring portion configured to acquire positional data related to a corner portion of an edge of the lens before the lens is finished and after the lens is roughed; a processing control data acquiring portion configured to acquire corner portion processing control data for removing a chip adhering to the lens through roughing, based on the positional data acquired by the positional data acquiring portion; and a processing control portion configured to control the movement portion based on the corner portion processing control data so as to remove the chip adhering to the lens.

Claims

1. An eyeglass lens processing apparatus comprising:

a processing tool configured to process a periphery of a lens;

a movement portion configured to change a relative position between the lens and the processing tool;

a processor;

memory storing computer readable instructions, which executed by the processor, causing the eyeglass lens processing apparatus to execute;

acquiring positional data related to a corner portion of an edge of the lens before the lens is finished and after the lens is roughed;

acquiring corner portion processing control data for removing a chip adhering to the lens through roughing, based on the acquired positional data; and

controlling the a movement portion based on the corner portion processing control data so as to remove the chip adhering to the lens; and

wherein

finishing control data for finishing the lens is acquired based on lens shape data acquired by measuring the shape of the lens by using a lens shape measuring portion after the chips adhering to the lens are removed by the processing tool, and

the movement portion is controlled based on the finishing control data to finish of the lens.

2. The eyeglass lens processing apparatus according to claim 1, wherein

the corner portion processing control data is acquired by bringing the processing tool and the corner portion of the edge of the lens after the lens is roughed into contact with each other based on the positional data acquired by the positional data acquiring portion, and

the movement portion is controlled based on the corner portion processing control data to process the corner portion of the edge of the lens to remove the chips adhering to the lens.

3. The eyeglass lens processing apparatus according to claim 2, wherein after performing roughing of the lens by controlling the movement portion based on roughing control data, the movement portion is controlled based on the corner portion processing control data to process the corner portion of the edge of the lens after the lens is roughed to remove the chip adhering to the lens.

4. The eyeglass lens processing apparatus according to claim 3, wherein

the roughing includes a first stage in which the processing tool cuts the lens without rotating the lens in a plurality of lens rotation angle directions by controlling the movement portion based on the roughing control data, and a second stage in which the processing tool processes the lens while the lens is rotated,

the second stage is performed after the first stage.

5. The eyeglass lens processing apparatus according to claim 1 further comprising:

a supply portion configured to supply processing water in a direction toward a contact position between the lens and the processing tool when the lens is processed; and

a supply control portion configured to stop supplying of the processing water from the supply portion when the corner portion of the edge is processed.

6. The eyeglass lens processing apparatus according to claim 1,

wherein the lens is processed through an up-cut method when the corner portion of the edge is processed.

7. The eyeglass lens processing apparatus according to claim 1, wherein

the computer readable instructions when executed by the processor causes the eyeglass lens processing apparatus to acquire chamfering control data for processing the corner portion of the edge of the lens after the lens is finished, and

the movement portion is controlled based on the chamfering control data so as to process the corner portion of the edge of the lens after the lens is finished.

8. The eyeglass lens processing apparatus according to claim 1, wherein the finishing control data for finishing the lens is a plano-processing finish.

9. The eyeglass lens processing apparatus according to claim 1, wherein the finishing control data for finishing the lens is a beveling finish.

10. A non-transitory computer readable medium storing an eyeglass lens processing program to be executed by a processor of an eyeglass lens processing apparatus for processing a periphery of the lens, the eyeglass lens processing apparatus including a processing tool processing a lens and a movement portion configured to change a relative position between the lens and the processing tool, the eyeglass lens processing program, when executed by the processor, causing the eyeglass lens processing apparatus to execute:

acquiring positional data related to a corner portion of an edge of the lens before the lens is finished and after the lens is roughed;

acquiring corner portion processing control data for removing a chip adhering to the lens through roughing, based on the acquired positional data; and

controlling the movement portion based on the corner portion processing control data so as to remove the chip adhering to the lens;

wherein

finishing control data for finishing the lens is acquired based on lens shape data acquired by measuring the shape of the lens by using a lens shape measuring portion after the chips adhering to the lens are removed by the processing tool, and

the movement portion is controlled based on the finishing control data to finish of the lens.

11. An eyeglass lens processing apparatus comprising:

a processing tool configured to process a periphery of a lens;

a movement portion configured to change a relative position between the lens and the processing tool

a processor;

memory storing computer readable instructions, which executed by the processor, causing the eyeglass lens processing apparatus to execute;

acquiring positional data related to a corner portion of an edge of the lens before the lens is finished and after the lens is roughed;

acquiring corner portion processing control data for removing a chip adhering to the lens through roughing, based on the acquired positional data; and

controlling the a movement portion based on the corner portion processing control data so as to remove the chip adhering to the lens;

wherein;

the corner portion processing control data is acquired by bringing the processing tool and the corner portion of the edge of the lens after the lens is roughed into contact with each other based on the positional data acquired by the positional data acquiring portion,

the movement portion is controlled based on the corner portion processing control data to process the corner portion of the edge of the lens to remove the chips adhering to the lens;

after performing roughing of the lens by controlling the movement portion based on roughing control data, the movement portion is controlled based on the corner portion processing control data to process the corner portion of the edge of the lens after the lens is roughed to remove the chip adhering to the lens;

the roughing includes a first stage in which the processing tool cuts the lens without rotating the lens in a plurality of lens rotation angle directions by controlling the movement portion based on the roughing control data, and a second stage in which the processing tool processes the lens while the lens is rotated, and

the second stage is performed after the first stage.