JPH08229771A - Engraving method and engraving device - Google Patents

Abstract

PURPOSE: To enable even unskilled persons to accurately engrave a relief, medal, etc., in a short time, with no excellent engraving technique required. CONSTITUTION: A device comprises a measuring part 1 formed of a laser three- dimensional shape measuring device, arithmetic part 4 of correcting a measured data arithmetically processed and converted into a cutting data and an engraving machine 7 of engraving based on the cutting data. In this way, a material is three-dimensionally engraved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engraving method for relief engraving, medal engraving, etc. and an engraving apparatus used therefor.

[0002]

2. Description of the Related Art Relief is a person's face, etc. carved on a metal plate, and is used as a wall decoration, a memorial, etc. The medal is a circle with a diameter of 1 cm to 10 cm. The board is carved and used as a souvenir of a tourist spot or as an award for sports competitions.

When engraving a person's face or the like on such reliefs and medals, a professional engraver looks at a photograph or the like. However, not only the finished product is affected by the skill of the sculptor, but it takes a long time to complete the product.
Production costs are high. Therefore, there is a demand for means for engraving reliefs and medals more easily.

[0004]

The engraving apparatus of the present invention comprises a measuring unit (1) consisting of a laser three-dimensional shape measuring apparatus, and the measured data is corrected if necessary, arithmetically processed, and converted into cutting data. It is characterized by comprising a computing unit (4) and an engraving machine (modeling machine) (7) for engraving based on the cutting data.

As the engraving method, a step of measuring the shape by a laser three-dimensional shape measuring device, a step of correcting the measured data when necessary, an arithmetic processing of the data, and a conversion into cutting data. It is characterized by including a step and a step of engraving based on the cutting data.

[0006]

[Operation] Three-dimensional information of a person or the like as an object to be measured is measured by the laser three-dimensional shape measuring apparatus (1). Here, the laser three-dimensional shape measuring device (1) is a device for measuring the shape by detecting the reflected light when the three-dimensional object to be measured (2) is irradiated with laser light, and it is reflected by the triangulation method. The displacement is measured by detecting the light spot position of the light with a CCD camera or the like of the light position detector.

Next, the measured three-dimensional information is stored in a computer.
Correct in (4). Next, data is arithmetically processed from conditions such as relief size and carving depth to obtain an appropriate cutting amount. Then, the data is converted into cutting data suitable for the engraving machine (7), and the cutting data is transferred to the engraving machine (7). The engraving machine (7) three-dimensionally engraves the material by moving the tip position of the cutter with respect to the material based on the cutting data to any position in the three axial directions of vertical, horizontal and depth.

[0008]

The present invention will be described by taking as an example the production of a relief for engraving a human face. FIG. 1 is a schematic diagram showing the configuration of the engraving apparatus of the present invention. In the figure, (1) is a laser three-dimensional shape measuring device, which is provided with laser light irradiation parts (1a) at both left and right ends of the upper reading part, and a CCD camera (1b) is provided at the center part. There is.

A chair is placed at the measurement position in front of the measuring device (1), and after the person to be measured (2) sits, the chair is placed at the height of the face of the person to be measured (2). Adjust the reading position. In the present embodiment, the reading unit of the measuring device (1) was moved up and down,
It may be adjusted by changing the height of the chair. A black screen or curtain (3) is placed behind the person to be measured (2).
This is to prevent irregular reflection of the laser light.

When the preparation is completed, the measurement is started. The measurement time was 10 seconds, 5 seconds each from the left and right laser irradiation parts (1a). Be careful not to move the person under test (2) as much as possible during the measurement. The pattern to be projected is input by the CCD camera (1b) of the measuring device (1), and the stereoscopic information is calculated from the projection angle of the input data.

The operator (5) can confirm the measurement status on the monitor (or the dedicated monitor (6)) of the computer (4), and if correction is necessary, make the correction while looking at the monitor. Modifications include deletion of unnecessary parts, correction of missing parts, etc., but modification to intentionally emphasize part of the face of the person to be measured (2) or conversely make it inconspicuous (deformation)
Is also possible. If the person to be measured (2) has not moved accurately due to significant movement, perform the measurement again.

Next, the operator (5) gives the output condition to the computer (4). The following are possible output conditions. (A) Relief size Set the size (magnification) of the shape to be carved according to the size of the relief or medal. The vertical direction (x-axis direction) and the horizontal direction (y-axis direction) may have different magnifications. In this embodiment, in order to simplify the operation as much as possible, the engraving scale ratio can be automatically set only by setting the size of the relief and the medal. If the engraving machine has a function of automatically calculating the scale factor from the size of the medium to be engraved, it is not necessary to make the above setting at the stage of the output condition of the computer. In addition, if the size of reliefs and medals is constant, two types of scales can be selected with two selection buttons, "relief" and "medal", to further simplify the operation. Good.

(B) Character layout When characters such as names and dates are to be inserted in the relief, desired characters and their size, position, etc. are set while checking them on the screen.

(C) Selection of engraving method As engraving methods such as relief, a convex engraving in which a material is fixed to a fixture and directly engraved, and a concave mold is once created, engraved in this mold, and lead etc. after cutting is completed. Since there is a concave engraving that is performed with, select which method to engrave. In the present embodiment, the convex engraving is used. Generally, the concave engraving does not require cutting of an extra portion around it, so that the cutting time is short and it is suitable for engraving fine characters.

(D) Setting of engraving depth When a person's face is used as a relief, engraving may be performed in the same ratio as the actual object in the vertical and horizontal directions (x-axis, y-axis direction) and the depth direction (z-axis direction). Since the unevenness of the surface is too large (the value in the z-axis direction is too large), an appropriate magnification (reduction rate) is given to the data in the depth direction according to the taste and application. On the contrary, when the object to be measured has few irregularities, the relief can be used to emphasize the irregularities more than the actual product by adjusting the magnification.

(E) Setting of Number of Repeats When it is desired to create a plurality of reliefs having the same shape, an instruction to repeat the cutting work is given. In addition, in the case of concave engraving,
Since it is possible to make multiple reliefs with a single mold, it is not usually necessary to carve multiple molds, but multiple molds are needed for mass production or for casting operations at multiple locations.

A computer based on the above setting conditions
After the cutting values in the longitudinal, lateral, and depth axial directions are calculated in (4), the data obtained by the calculation are converted into cutting data and transferred to the engraving machine (7). If you want to make the same relief again later, you can store the data in the recording medium of the computer (4). Although the FD is used in this embodiment, an optical disk or the like may be used. The data to be stored may be data after calculation or cutting data.

Material is fixed to the workbench (7a) of the engraving machine (7), and an appropriate cutter is attached to the cutter attachment portion (7b). In this embodiment, a copper plate having a thickness of 4 cm is used as a material,
An end mill was used as a cutter. A router or the like can also be used as the cutter. Further, the engraving machine (7) can set the engraving speed and the like according to the material of the relief to be engraved, the fineness of the engraving, and the like. Engraving machine (7) is a computer
The material is engraved based on the cutting data sent from (4).

In the present embodiment, the movement of the cutter tip position with respect to the material is performed by moving the workbench (7a) in a horizontal plane in the vertical and horizontal directions (x and y axis directions) and mounting the cutter in the depth direction (z axis direction). It is done by moving the part (7b) up and down, but the engraving machine (7) is not limited to this,
Only the workbench (7a) on which the material is fixed may move in each axial direction, or only the cutter mounting part (7b) may move in each axial direction.

If the relief surface has burrs or the like after engraving, buffing or the like is preferably performed in order to smooth the relief surface. Further, when the concave engraving is selected, the relief work is made by performing the casting operation using the concave mold.

Although the face of a person is engraved on a copper plate in the above embodiment, the present invention is not limited to this, and various three-dimensional shapes can be engraved on various materials. For example, it is possible to engrave a flower on a ceramic board to hang it on a wall, or to engrave a fish shape on food such as rice cake and chocolate.

[0022]

As described above, according to the present invention, engraving such as relief can be accurately performed in a short time. Also,
Since a worker is not required to have excellent engraving skills, even an inexperienced person can easily work.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of an engraving device of the present invention.

[Explanation of symbols]

 (1) Laser three-dimensional shape measuring device (1a) Laser light irradiation part (1b) CCD camera (2) Person to be measured (3) Black screen (4) Computer (5) Operator (6) Monitor (7) Engraving machine

Claims (3)

[Claims] 1. A step of measuring a shape by a laser three-dimensional shape measuring apparatus, a step of correcting the measured data when correction is necessary, a step of arithmetically processing the data and converting into cutting data, An engraving method comprising a step of engraving based on cutting data. 2. A measuring unit comprising a laser three-dimensional shape measuring device, a calculating unit for correcting measured data, performing arithmetic processing, and converting into cutting data, and an engraving machine for engraving based on the cutting data. An engraving device characterized by the above. 3. The engraving apparatus according to claim 2, further comprising means for storing the arithmetically processed data or cutting data.