Grinding device and method for determining thickness of grinded material

A grinding device and grinding shaft technology, which is applied to the parts of grinding machine tools, grinding machines, optical surface grinders, etc., can solve the problem of high thickness accuracy of the ground material, high technical ability requirements of the staff, and difficulty in improving the ground material Thickness detection accuracy and other issues

Inactive Publication Date: 2005-05-11
NAGATA SEISAKUSHO
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Problems solved by technology

[0005] In the above-mentioned conventional grinding methods, a lot of efforts have been made to control the thickness of the material to be ground with high precision. However, it cannot be said that the thickness accuracy of the material to be ground is already very high.
Especially in the ball center swing type grinding device

Method used

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  • Grinding device and method for determining thickness of grinded material
  • Grinding device and method for determining thickness of grinded material
  • Grinding device and method for determining thickness of grinded material

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Embodiment Construction

[0027] Embodiments of the present invention will be described below with reference to the drawings.figure 1 It is a schematic structural diagram showing the main part structure of the polishing apparatus 100 of this embodiment. The grinding device 100 shown in the figure is an upper shaft ball core swinging type grinding device. However, the function and structure of the upper shaft part and the lower shaft part of the grinding device 100 may be reversed to form a lower shaft center swing type grinding device. In this polishing device 100, the upper shaft part 110 rotates around the swing center Fo, and the lower shaft part 120 rotates around the axis.

[0028] On the upper shaft portion 110 , a first grinding member (grinding disc) 111 is fixed to a first grinding shaft (swing member) 112 , and the first grinding shaft 112 is axially supported relative to a supporting member 113 so as to be movable in the axial direction. The support member 113 is driven by a swing drive mec...

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Abstract

PROBLEM TO BE SOLVED: To provide technique for determining a thickness by which the thickness of a workpiece highly accurately managed without requiring highly skilled work.

SOLUTION: The grinding device 100 for grinding the workpiece has a first grinding member 111, a second grinding member 121 arranged oppositely to the first grinding member via the workpiece 101, and a driving means which relatively rotates or oscillates the first grinding member and the second grinding member. The device 100 also has: detecting means 114, 117, which measure the position of a device structure part changed with the changes of the thickness of the workpiece and detects whether the detected value of the thickness corresponding to the thickness below a setting value of the thickness of the workpiece is obtained; and a clocking means which calculates the duration of continuously obtaining the detected value of the thickness corresponding to the thickness below the setting value. The device 100 is composed so that grinding operations are stopped when the duration exceeds a prescribed setting time.

COPYRIGHT: (C)2005,JPO&NCIPI

Description

technical field [0001] The invention relates to a grinding device and a method for judging the thickness of a ground material, in particular to a technology for determining the thickness of a ground material in a device and method for grinding optical parts such as lenses. Background technique [0002] Usually, when grinding optical parts such as lenses, the material to be ground is fixed on one of the upper grinding disc and the lower grinding disc, and the upper grinding disc and the lower grinding disc are relatively rotated and oscillated to perform grinding. As devices using this grinding method, there are known a ball core swing type grinding device and an Oscar type grinding device. In the core swing type grinding device, one grinding shaft (either one of the upper and lower sides) is rotated around a predetermined swing center, and the other grinding shaft is rotated at the same time. In the Oscar-type grinding device, one grinding shaft is connected to a grinding d...

Claims

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Application Information

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IPC IPC(8): B24B49/10B24B13/00B24B13/02B24B49/04
CPCB24B13/00B24B27/0076B24B49/04
Inventor 永田修平
Owner NAGATA SEISAKUSHO
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