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Eyeglass lens processing apparatus

A technology for spectacle lenses and processing equipment, applied in metal processing equipment, grinding/polishing equipment, manufacturing tools, etc., can solve problems such as affecting the precision of finishing

Active Publication Date: 2012-05-09
NIDEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, if the undercut method is used, the processing waste discharged in the direction of rotation of the roughing grindstone tends to become viscous due to the influence from heat, and the processing waste melted by heat adheres to the surface of the lens that has undergone rough processing. perimeter, which affects the machining accuracy of subsequent finishing

Method used

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  • Eyeglass lens processing apparatus
  • Eyeglass lens processing apparatus
  • Eyeglass lens processing apparatus

Examples

Experimental program
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Embodiment Construction

[0055] Exemplary embodiments of the present invention will be described with reference to the accompanying drawings. figure 1 It is a schematic structural diagram of eye lens processing equipment.

[0056] A carriage 101 rotatably holding a pair of lens chuck shafts 102L and 120R is mounted on a base 170 of the processing apparatus 1 . The periphery of the spectacle lens LE interposed between the chuck shafts 120L and 102R is processed by being pressed against each of the grinding stones of the grinding stone group 168 coaxially provided on the spindle (processing tool) as a processing tool. tool rotation axis) 161a.

[0057] The grinding stone group 168 includes: a roughing grinding stone 162; a finishing grinding stone 163 including a front bevel processing surface for forming the front bevel of the high-order curve lens and a rear bevel processing for forming the rear bevel surface; finishing grindstone 164, which includes V-shaped grooves and planar finishing surfaces fo...

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PUM

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Abstract

In an eyeglass lens processing apparatus, if a material selector selects a thermoplastic material for the lens, a control unit performs a first step and then a second step. In the first step, the control unit controls a lens rotating unit to position a lens in a plurality of lens rotation angles and controls an axis-to-axis distance changing unit to cause a roughing tool to cut into the lens up to a roughing path for each of the plurality of lens rotation angles, the lens being not rotated by the lens rotating unit when the roughing tool is cutting into the lens up to the roughing path. In the second step, the control unit controls the lens rotating unit and the axis-to-axis distance changing unit to rough the lens based on the roughing path while the lens rotating unit rotates the lens.

Description

technical field [0001] The invention relates to a spectacle lens processing device for processing the periphery of spectacle lenses. Background technique [0002] In an apparatus for processing the periphery of a spectacle lens, the spectacle lens is held by a pair of lens chuck shafts, the lens is rotated by the rotation of the lens chuck shaft, and a roughing tool such as a roughing grindstone is pressed against the lens, thereby Rough machining around the lens. A cup as a processing jig is fixed on the surface of the spectacle lens, and the lens is held by the pair of lens chuck shafts via the cup. [0003] In recent years, water-repellent lenses obtained by coating the surface of the lens with a water-repellent material, to which water, oil, etc. do not easily adhere, have become widely used. The surface of the water-repellent lens is slippery. Therefore, if the same processing control as that applied to a lens not coated with a water-repelling material in the related...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B9/08
CPCB24B9/148B24B9/14B24B9/144B24B47/22B24B49/02B24B51/00
Inventor 柴田良二
Owner NIDEK CO LTD