JPH0332561A - Grinding method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a grinding machine equipped with functions for positioning a grindstone and a workpiece in a horizontal rotary surface grinder, etc., and for processing the thickness of the workpiece with high precision. The present invention relates to a grinding method.

Conventional technology Very few small horizontal axis rotary surface grinders are equipped with a high-precision positioning device, which determines the depth of cut of the tool from the dimensions of the previously machined workpiece and the position of the tool. However, the cutting of the tool is performed using the feeding mechanism of the table. For this reason, there has been a problem in that the machining accuracy is affected by the mounting condition of the workpiece to the machine, the wear condition of the grindstone, etc.

A conventional example will be explained. FIG. 2 shows a conventional method for positioning tools and workpieces.

In FIG. 2, 1 is a grindstone. 2 is a jig for attaching and fixing the workpiece. 3 is a workpiece. Reference numeral 4 denotes a measuring device that measures the distance between the grindstone 1 and the workpiece attachment jig 3.

The operation of the grinding machine configured as described above will be explained below.

Before starting processing, prepare a grindstone 1. The rotation of the workpiece pasting jig 2 is stopped, and the measuring device 4 measures the grindstone 1 and the workpiece pasting jig 2.
The distance between them is measured, and the workpiece 3 is ground based on the measured value.

Problems to be Solved by the Invention However, with the above configuration, grinding wheel wear during machining,
There was a problem in that the thickness of the workpiece could not be processed with high accuracy due to thermal expansion and contraction of the mechanical system due to processing heat.

In view of the above problems, the present invention is intended to process the thickness of a workpiece with high precision.

Means for Solving the Problems In order to solve the above problems, the grinding machine of the present invention provides a grinding machine in which a planar tool and a workpiece mounting jig to which a workpiece is attached are arranged facing each other. In this machine, a non-contact measuring device is placed between the planar tool and the workpiece attaching jig to measure the distance between the planar tool and the workpiece attaching jig for positioning.

Effect: With the above-described configuration, it is possible to measure in real time the wear of the grindstone during machining and the thermal expansion and contraction of the mechanical system due to machining heat, making it possible to machine the workpiece with high precision.

EXAMPLE Hereinafter, a grinding machine according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a method of positioning a grindstone of a grinding machine and a workpiece attachment jig in an embodiment of the present invention. In the figure, 5 is a grindstone. 6 is a jig for attaching and fixing the workpiece. 7 is a workpiece, and 68 is a non-contact measuring device such as an air micro.

The operation of the grinding machine configured as described above will be explained below with reference to FIG.

Whetstone 5. The workpiece 7 is ground by sending the workpiece attachment jig 6 toward the grindstone 5 while rotating the workpiece attachment jig 6. At this time, the grinding wheel 5. By measuring the distance between the workpiece attachment jig 6 in real time and feeding it back to the feed amount of the workpiece 7 in the direction of the grinding wheel, wear of the grindstone during processing and thermal expansion and contraction of the mechanical system due to processing heat can be canceled. can do.

Effects of the Invention As described above, the present invention provides a grinding machine in which a planar tool and a workpiece attachment jig to which a workpiece is attached are arranged facing each other. A non-contact measuring device is placed between the tools to measure the distance between the flat tool and the workpiece attachment jig in real time while machining the workpiece, and based on this measurement value, the workpiece is fed to the flat tool. By controlling the amount, it is possible to prevent the adverse effects of grindstone wear during processing and thermal expansion and contraction of the mechanical system due to processing heat, and the workpiece can be processed with high precision.

[Brief explanation of drawings]

FIG. 1 is a detailed explanatory diagram of the present invention, and FIG. 2 is an explanatory diagram showing a conventional example. 5... Grindstone, 6... Workpiece pasting jig, 7... Workpiece, 8... Non-contact measuring device.

Claims (1)

[Claims] In a grinding machine where a flat tool and a workpiece attachment jig to which a workpiece is attached are placed facing each other, a non-contact measuring instrument is placed between the flat tool and the workpiece attachment jig. A grinding method characterized by measuring the distance between a planar tool and a jig for attaching the workpiece while machining the workpiece, and controlling the amount of feed of the workpiece to the planar tool based on this measured value. .