JP2016147347A - Grinding apparatus and stereoscopic image processing method of using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing technique capable of forming a stereoscopic image on a processing object surface by a simple processing method.SOLUTION: In a tip end surface 10b of a columnar rotary body 10, a grindstone part 20 is provided on a straight line, that is, on a diameter of passing through the rotational center in the tip end surface 10b of the rotary body 10. The rotary body 10 and the grindstone part 20 are made of the same construction material, and the grindstone part 20 is formed on the diameter of the end surface 10b by cutting the end surface 10b of the rotary body 10. An attachment shaft 12 is attached to a rotary shaft such as a milling machine and a drill in a state of allowing the grindstone part 20 to abut on a processing object surface of a workpiece, so that a stereoscopic image can be formed on the processing object surface by relatively moving the processing object surface while rotating the rotary body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stereoscopic image processing method for forming a stereoscopic image on a processing surface using a grinding tool.

  Conventionally, there is a technique for manufacturing a stereogram display body in which a three-dimensional image (stereogram) is reproduced by unevenness of a three-dimensional object. In this technique, a substrate having a concavo-convex shape formed on the surface of a flat stereogram display body is provided, and the stereogram is reproduced by shading due to the concavo-convex shape.

  The unevenness of the substrate is formed by converting cutting data created based on original picture data representing a color field stereogram into NC data, and cutting the substrate surface based on the NC data (for example, , See Patent Document 1).

Japanese Patent Application No. 2013-163274

  However, in the above-described stereogram display body manufacturing technology, irregularities are formed on the substrate surface by performing NC processing based on original picture data representing a color field stereogram, so that a complicated stereoscopic image can be displayed. The processing of the original picture data representing the field stereogram is necessary, the original picture data is converted into data for NC processing, or it is necessary to form irregularities on the substrate surface by NC processing. There was a problem of hanging.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a processing technique capable of forming a stereoscopic image on a processing surface by a simple processing method.

  In this column, in order to facilitate understanding of the invention, the reference numerals used in the “Mode for Carrying Out the Invention” column are attached as necessary, which means that the scope of claims is limited by this reference numeral. is not.

  The invention made in order to solve the problem described in “Problem to be Solved by the Invention” is provided on at least a part of the columnar rotating body (10) and the tip end face (10b) of the rotating body (10). And a grinding tool (1, 2, 3, 4) comprising a grinding means (20) for grinding the work surface (80a).

Moreover, you may make it provide a grinding means (20) on the straight line which passes along the rotation center of a rotary body (10) in the front-end | tip end surface (10b) of a rotary body (10). .
Furthermore, as described in claim 3, the grinding means (20) is arranged on the tip end face (10b) of the rotating body (10) on a straight line passing through the rotation center of the rotating body (10) and radially from the rotation center. It may be arranged.

According to a fourth aspect of the present invention, the grinding means (20) of the grinding tool (1, 2, 3, 4) according to any one of the first to third aspects is applied to the work surface (80a). Contact the grinding tool (1,2,
A stereoscopic image processing method is characterized in that a stereoscopic image is formed on the processing surface (80a) by relatively moving the processing surface (80a) while rotating 3 and 4).

According to the grinding tool (1, 2, 3, 4) and the stereoscopic image processing method using the same as described above, it is possible to easily form a stereoscopic image on the processing surface.
That is, after the grinding means (20) of the grinding tool (1, 2, 3, 4) is brought into contact with the work surface (80a), the grinding tool (1, 2, 3, 4) is rotated while being rotated. A three-dimensional image can be obtained by a simple processing method of relatively moving on the processing surface (80a). The reason will be described below.

  When the grinding tool (1, 2, 3, 4) is rotated with the grinding means (20) in contact with the work surface (80a), circular fine grooves are formed on the work surface (80a). . Then, when the grinding tool (1, 2, 3, 4) is rotated and relatively moved, a fine groove is formed in a spiral shape on the work surface (80a).

  When the groove formed in this way is viewed from a line of sight in a certain direction, only light incident on the groove from the opposite side of the line of sight enters the line of sight, and light incident on the groove from other than the opposite side of the line of sight does not reflect in the direction of the line of sight. Therefore, a cylindrical figure (pattern) formed in the direction of the line of sight can be visually recognized.

  Further, when the line of sight is shifted or the workpiece (80) is shifted, the cylindrical figure appears to be inclined on the same principle. That is, when the line of sight is rotated or the workpiece (80) is rotated on a plane, the cylindrical figure appears to rotate three-dimensionally.

It is a figure which shows the schematic structure of the grinding tool in 1st Embodiment. It is a schematic diagram for demonstrating a stereo image formation process. It is a figure which shows the example of the stereo image formed at the stereo image formation process in 1st Embodiment. It is a figure which shows the structure of the outline of the grinding instrument in 2nd Embodiment. It is a figure which shows the example of the stereo image formed at the stereo image formation process in 2nd Embodiment. It is a figure which shows the schematic structure of the grinding tool in 3rd Embodiment. It is a figure which shows the example of the stereo image formed at the stereo image formation process in 3rd Embodiment. It is a figure which shows the schematic structure of the grinding tool in 4th Embodiment, It is a figure which shows the example of the stereo image formed at the stereo image formation process in 4th Embodiment. It is a figure which shows the example of the stereo image formed at the stereo image formation process in 5th Embodiment.

Embodiments to which the present invention is applied will be described below with reference to the drawings. The embodiment of the present invention is not limited to the following embodiment, and can take various forms as long as they belong to the technical scope of the present invention.
[First Embodiment]
(Structure of grinding tool 1)
First, the structure of the grinding tool will be described with reference to FIG. FIG. 1 is a diagram showing a schematic structure of the grinding tool 1. FIG. 1A shows a schematic configuration diagram, and FIGS. 1B and 1C show photographs of the actual grinding tool 1.

As shown in FIG. 1, the grinding tool 1 includes a rotating body 10, a mounting shaft 12, and a grindstone portion 20.
The rotating body 10 is made of the same material as that of the grindstone 20 to be described later, which is solidified by sintering or the like, and the mounting shaft 12 is mounted on the rotation center axis on the one end 10a side of the two cylindrical end faces. It is attached.

The attachment shaft 12 is a metal rod such as stainless steel, and is a shaft for attaching the grinding tool 1 to the chuck 72 of the rotary shaft 74 such as a milling machine 70 or a drill.
The grindstone portion 20 is a mixture of abrasive grains and a binder that is baked and hardened. The grindstone section 20 is rotated at a high speed, and the surface of the workpiece 80 (the workpiece surface 80a) is scraped and processed little by little with hard abrasive grains. Depending on the material of the workpiece 80, the purpose of processing (the shape of the stereoscopic image), etc., a grindstone having an appropriate degree of bonding (bonding strength), particle size (size of abrasive grains), and the like is selected.

  As the material of the abrasive grains, alumina abrasives such as alumina abrasives, artificial emery abrasives, alumina zirconia abrasives, and silicon carbide abrasives such as black silicon carbide abrasives and green silicon carbide abrasives are used.

  The grindstone 20 is formed by grinding the tip of the cylindrical body integrally with the rotating body 10 by polishing or the like, and the end surface of the rotating body 10 opposite to the end surface 10a to which the mounting shaft 12 is attached. 10b is formed in an elongated rectangular parallelepiped shape so that the longitudinal direction coincides with the diameter of the end face 10b.

Note that the length in the longitudinal direction of the grindstone 20 is determined by the size of the stereoscopic image formed on the work surface 80a.
(3D image forming process)
Next, a process for forming a stereoscopic image on the processing surface 80a will be described with reference to FIG. FIG. 2 is a schematic diagram schematically showing a stereoscopic image forming process.

As shown in FIG. 2, the three-dimensional image forming process includes the following processes (a) to (c).
(A) The mounting shaft 12 of the grinding tool 1 is inserted into the chuck 72 of the milling machine 70 and tightened and attached to the rotating shaft 74. Further, a flat plate of SUS material (hereinafter also referred to as SUS plate 80), which is the workpiece 80, is placed and fixed on the table 76 of the milling machine 70 (see FIG. 2A).
(A) The rotating shaft 74 of the milling machine 70 is lowered as shown by the downward arrow in FIG. 2B, and the grindstone portion 20 of the grinding tool 1 is brought into contact with the work surface 80a of the SUS plate 80 (FIG. 2 (b)).
(C) The movement trajectory of the grinding tool 1 is horizontal in FIG. 2C so that a predetermined stereoscopic image can be obtained on the table 76 of the milling machine 70 while rotating the rotating shaft 74 of the milling machine 70 at a predetermined rotational speed. It moves so that it may become linear form as shown by the arrow of a direction (refer FIG.2 (c)).
(Characteristics of 3D image forming process)
Next, the characteristics of the stereoscopic image forming process as described above will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of a stereoscopic image formed in the stereoscopic image forming process.

  As described above, when the grinding tool 1 is rotated and relatively moved on the work surface 80a of the SUS plate 80, a groove having a very small width is spirally formed on the work surface 80a in the width of the grindstone 20. It is formed.

Since this groove is continuously formed in a spiral shape, when the processed surface 80a that has been processed is viewed from the direction of a certain line of sight, the light reflected by the groove from the opposite direction of the line of sight enters the line of sight, and the rest Since the light from the direction is reflected in the direction other than the line of sight, it does not enter the line of sight.

  At this time, an image that can be visually recognized is shown in FIG. In FIG. 3 (a), a plurality of three-dimensional cylindrical patterns formed from vertically divided rings can be visually recognized on the work surface 80a.

  One of the two upper and lower rings visible in one pattern is the length from the center of rotation of the rotating body 10 to the end of the grindstone 20 disposed on the diameter of the end face 10b of the rotating body 10 (see FIG. 1 is a pattern formed in a portion of a substantially radius), and the other is formed in the remaining portion of the grindstone portion 20 (almost other radius in the grindstone portion 20 shown in FIG. 1). It is a pattern to be done.

  Further, FIG. 3B shows a pattern that can be visually recognized when the line of sight is shifted to the right or the work surface 80a is rotated to the left. In FIG. 3B, the cylindrical pattern is the one shown in FIG. 3A viewed from an oblique direction.

  This is because the light reflected from the grooves formed on the processed surface 80a and entering the line of sight is shifted by the amount of shifting the line of sight or rotating the processed surface 80a compared to the case shown in FIG. It is for reflection.

  FIG. 3C shows a pattern that can be visually recognized when the line of sight is shifted to the left or the work surface 80a is rotated to the right. Also in FIG. 3C, the cylindrical pattern is the one shown in FIG. 3A viewed from an oblique direction on the same principle as in FIG. 3B.

As described above, when the line of sight is rotated with respect to the processed surface 80a subjected to the stereoscopic image forming process or the processed surface 80a is rotated, the line of sight is viewed from the groove formed on the processed surface 80a by the stereoscopic image forming process. Light is reflected only in the direction, and light other than the direction of the line of sight does not enter the line of sight, so that the cylindrical pattern appears to rotate three-dimensionally.
[Second Embodiment]
Next, based on FIG. 4, about 2nd Embodiment which made the grindstone part 20 of the grinding tool 1 a different shape, FIG. 4 is a figure which shows the general | schematic structure of the grinding tool 2, and is schematic to FIG. 4 (a). FIG. 4B and FIG. 4C show photographs of the actual grinding tool 2.

  As shown in FIG. 4, the grinding tool 2 in the second embodiment is 270 degrees (three-fourths of the end surface 10 b) with the rotation center of the rotating body 10 as the origin in the circular tip end surface 10 b of the rotating body 10. Removed and formed.

Since the structure other than the grindstone 20 is the same as that of the grinding tool 1 in the first embodiment, the same reference numerals are given and description thereof is omitted.
FIG. 5 shows an example of a stereoscopic image obtained by processing the work surface 80a of the work piece 80 by using the same grinding tool 2 as in the first embodiment. 5A is a front view of the work surface 80a, FIG. 5B is a view of the work surface 80a as viewed from the right, and FIG. 5C is a work surface. It is the figure which looked at 80a from the left diagonal.

Also in the second embodiment (stereoscopic image forming process using the grinding tool 2), the cylindrical pattern rotates three-dimensionally as in the first embodiment (stereoscopic image forming process using the grinding instrument 1). (See FIGS. 5 (a), 5 (b), and 5 (c)).
[Third Embodiment]
Next, based on FIG. 6, about 2nd Embodiment which made the grindstone part 20 of the grinding tool 1 a different shape, FIG. 6 is a figure which shows the general | schematic structure of the grinding tool 3, and it is schematic to FIG. 6 (a). Configuration diagram of FIG.
FIG. 6B and FIG. 6C show photographs of the actual grinding tool 3.

  As shown in FIG. 6, the grinding tool 3 in the second embodiment leaves a semicircular convex portion at a position out of the rotation center of the rotating body 10 out of the circular tip end surface 10 b of the rotating body 10, That portion is formed as a grindstone portion 20 and other portions are deleted.

Since the structure other than the grindstone 20 is the same as that of the grinding tool 1 in the first embodiment, the same reference numerals are given and description thereof is omitted.
FIG. 7 shows an example of a three-dimensional image that has been surface-processed by the same three-dimensional image forming process as that of the first embodiment, using such a grinding tool 3. 7A is a front view of the work surface 80a, FIG. 7B is a view of the work surface 80a viewed from the right side, and FIG. 7C is a work surface. It is the figure which looked at 80a from the left diagonal.

Also in the third embodiment (stereoscopic image forming process using the grinding tool 3), the cylindrical pattern is three-dimensionally rotated as in the first embodiment (stereoscopic image forming process using the grinding instrument 1). (See FIGS. 7A, 7B, and 7C).
[Fourth Embodiment]
Next, based on FIG. 8, 4th Embodiment which made the grindstone part 20 of the grinding tool 1 a different shape is described. FIG. 8 is a diagram showing a schematic structure of the grinding tool 4. FIG. 8 (a) shows a schematic configuration diagram, and FIGS. 8 (b) and 8 (c) show photographs of the actual grinding tool 4. FIG.

Since the structure other than the grindstone 20 is the same as that of the grinding tool 1 in the first embodiment, the same reference numerals are given and description thereof is omitted.
As shown in FIG. 8, the grinding tool 4 in the fourth embodiment has a circular tip end surface 10 b of the rotating body 10 whose longitudinal direction coincides with the diameter of the end surface 10 b, and whose radius is long from the rotation center of the rotating body 10. It is formed in an elongated rectangular parallelepiped shape.

  FIG. 9 shows an example of a stereoscopic image that has been surface-processed by the same stereoscopic image forming process as in the first embodiment, using such a grinding tool 4. 9A is a front view of the work surface 80a, FIG. 9B is a view of the work surface 80a as viewed from the right, and FIG. 9C is a work surface. It is the figure which looked at 80a from the left diagonal.

Also in the fourth embodiment (stereoscopic image forming process using the grinding tool 4), the cylindrical pattern rotates three-dimensionally as in the first embodiment (stereoscopic image forming process using the grinding instrument 1). (See FIGS. 9A, 9B, and 9C).
[Fifth Embodiment]
Next, a description will be given of a stereoscopic image forming process different from the first to fourth embodiments based on FIG. FIG. 10 is a diagram illustrating an example of a stereoscopic image formed in the stereoscopic image forming process according to the fifth embodiment.

In the fifth embodiment, since the three-dimensional image formation is performed using the grinding tool 4 in the fourth embodiment, description of the grinding tool is omitted.
In the fifth embodiment, instead of continuously moving the rotating shaft 74 while rotating the rotating shaft 74 of the milling machine 70,
(A) The grindstone portion 20 of the grinding instrument 4 is brought into contact with the SUS plate 80 while rotating the rotating shaft 74, and the work surface 80a of the SUS plate 80 is ground.
(A) Then, the grindstone 20 is separated from the SUS plate 80.
(C) The position of the rotating shaft 74 is moved.
(D) (A) to (C) are repeated, and a three-dimensional image is formed discontinuously on the SUS plate 80.

  FIG. 10 shows an example of a stereoscopic image that has been surface-processed by the stereoscopic image forming step. FIG. 10A is a front view of the work surface 80a, FIG. 10B is a view of the work surface 80a viewed from the right side, and FIG. 10C is a work surface. It is the figure which looked at 80a from the left diagonal.

In the fifth embodiment (stereoscopic image forming process using the grinding tool 4), unlike the first to fourth embodiments (stereoscopic image forming process using the grinding instrument 4), the shape excluding both end faces of the rectangular parallelepiped. This pattern appears to rotate three-dimensionally (see FIGS. 10A, 10B, and 10C).
[Other Embodiments]
(1) In the said embodiment, although the rotary body 10 of the grinding tools 1, 2, 3, 4 was made into the column shape, it is not a column shape, but the shape of a polygonal column, such as a square column, or a barrel shape, Also good.
(2) In the above embodiment, the milling machine 70 is used to rotate the grinding tools 1, 2, 3, 4, but a drill or the like may be used instead of the milling machine 70.

Further, a rotating mechanism of the grinding tools 1, 2, 3, 4 may be attached to the tip of the robot arm, and the grinding tools 1, 2, 3, 4 may be moved relative to the workpiece 80 while rotating.
(3) In the above embodiment, the grinding tool 1, 2, 3, 4 and the work surface 80a of the work piece 80 are relatively moved by moving the table 76 of the milling machine 70. The grinding tool 1, 2, 3, 4 and the work surface 80a of the work piece 80 may be relatively moved by fixing the work piece 80 and moving a rotating shaft such as a milling machine 70 or a drill.
(4) In the above embodiment, the grinding tools 1, 2, 3, 4 are moved linearly on the work surface 80a. However, even if the moving direction is not linear, a circular curve or a free curve is used. You may move it like drawing.
(5) In the above embodiment, the grindstone 20 is formed by cutting the end face 10b of the rotating body 10 of the grinding tools 1, 2, 3, 4; however, the rotating body 10 is made of another material (for example, a metal material). Etc.), and the grindstone portion 20 may be embedded in the end surface 10b, mechanically attached by bonding, bolts, or the like.
(6) In the above embodiment, the SUS plate is used as the workpiece 80. However, if the material reflects light, a metal material such as an aluminum material other than the SUS plate or a resin material such as acrylic or plastic is used. It may be used.
(7) In the above embodiment, the grindstone 20 is formed at the tip of the rotating body 10 as the grinding tools 1, 2, 3 and 4. However, instead of the grindstone 20, a metal or hard resin wire is used. A large number of brushes may be arranged. Moreover, you may make it make an abrasive grain adhere to the brush.

1, 2, 3, 4 ... Grinding tool 10 ... Rotating body 10a, 10b ... End face 12 ... Mounting shaft 20 ... Grinding wheel 70 ... Milling machine 72 ... Chuck 74 ... Rotary shaft 76 ... Table 80 ... Workpiece (SUS plate) 80a ... Work surface.

Claims (4)

A rotating body,
A grinding means for grinding a work surface provided on at least a part of the rotating body;
A grinding instrument characterized by comprising: The grinding tool according to claim 1,
The grinding means includes
The grinding tool according to claim 1, wherein the grinding tool is provided on a straight line passing through a rotation center of the rotating body at a tip end face of the rotating body. The grinding tool according to claim 2,
The grinding means includes
The grinding tool characterized in that the tip end face of the rotating body is arranged in a straight line passing through the center of rotation of the rotating body and radially from the center of rotation. The grinding means of the grinding tool according to any one of claims 1 to 3 is brought into contact with a work surface,
A three-dimensional image processing method, wherein a three-dimensional image is formed on the surface to be processed by relatively moving the surface of the surface to be processed while rotating the grinding tool.