Automatic measuring device for grindstone dimension in numerical control grinder

Abstract

PURPOSE: To correctly measure the diameter, length and shape change of a grindstone by arranging a contact detecting means detecting the contact of a grindstone, a main shaft indexing means indexing the grindstone at optional angle and an arithmetic means operating the dimension of the grindstone from the position detected by the contact detecting means. CONSTITUTION: In case of measuring the diameter and length of a grindstone T, the grindstone T is fitted to a main shaft 1 and moved toward a contact detecting means 6. The moving amt. of the grindstone is calculated by an arithmetic means 8 by the contact of the grindstone T with this contact detecting means 6. This calculated value is then subtracted from the reference distance between a preknown main shaft origin and the contact detecting means 6 by the arithmetic means 8 to find the dimension of the grindstone T. As a result, the diameter, length and shape change of the grindstone T can correctly be measured without accompanying any interference with the probe of the contact detecting means 6 and any wear of the probe. COPYRIGHT: (C)1990,JPO&Japio

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    JP-S62192846-UDecember 08, 1987
    JP-S6393564-AApril 23, 1988Niigata Eng Co LtdAutomatic grindstone size measuring method for numerically controlled grinding machine

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Cited By (6)

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    JP-2012213840-ANovember 08, 2012Murata Machinery Ltd, 村田機械株式会社工作機械
    JP-2014237202-ADecember 18, 2014中村留精密工業株式会社, Nakamura Tome Precision Ind Co LtdMethod of detecting replenishment error of grindstone to grindstone magazine
    US-5335454-AAugust 09, 1994L. Kellenberger & Co. AgProcedure for the numerical control of a workpiece on a grinding machine