JPH1170792A - Marking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marking apparatus having no restriction in a marking possible range with respect to a cylindrical or columnar article to be processed. SOLUTION: At the time of marking, a horizontal moving quantity in an X-axis direction is calculated as is conventional by an operator 10. When an X-axis motor 5 is rotated on the basis of the calculated command value through an X-axis amplifier 8, an air cylinder 3 and a vibration pen l are moved on an X-axis ball screw 4. A cylindrical or columnar article 2 to be processed is fixed to a Y-axis motor 7 by a connection rod 15 and a holder 16. The operator 10 sets a value obtained by dividing a moving distance in a Y-axis direction by the radius of a circle of a cylindrical cross section as the angle of rotation of the Y-axis motor 7 to apply a command value to a Y-axis amplifier 9. When the Y-axis motor 7 is rotated, the fixed article 2 to be processed is also rotated. The vibration pen 1 is vertically held with respect to the article 2 to be processed and there is no restriction in a marking possible range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device for marking a circumferential surface of a cylindrical or columnar workpiece.

[0002]

2. Description of the Related Art The configuration of a conventional marking device will be described with reference to FIG. 3, reference numeral 1 denotes a vibration pen, reference numeral 2 denotes a workpiece, reference numeral 3 denotes an air cylinder holding the vibration pen 1, reference numeral 4 denotes an air cylinder 3 in an X-axis direction (parallel to a central axis of the workpiece 2). X-axis ball screw for guiding in the direction
An X-axis motor for rotating the shaft ball screw 4, reference numeral 6 is a Y-axis ball screw for guiding the air cylinder 3 in the Y-axis direction orthogonal to the X-axis, reference numeral 7 is a Y-axis motor for rotating the Y-axis ball screw 6, and reference numeral 8 is X. An X-axis amplifier for giving a command to the axis motor 5; a reference numeral 9 denotes a Y-axis amplifier for giving a command to the Y-axis motor 7;
Reference numeral 10 denotes an arithmetic unit, reference numeral 11 denotes a data input device for externally inputting data such as the type and size of characters or lines to be marked, reference numeral 12 denotes a data display for displaying input data, and reference numeral 13 denotes an air cylinder 3. An air supply unit that supplies air to the air supply unit.

Next, a description will be given of a marking method using the above-described conventional apparatus. First, data such as the type and size of a character or line to be marked is input by the data input device 11. This data can be confirmed on the data display 12. When performing marking, the data input device 11
Is input by the arithmetic unit 10 to XY2
It is converted to the amount of movement in the axial direction, and the amount of movement in the X-axis direction is
The signal is transmitted from the X-axis amplifier 8 to the X-axis ball screw 4 via the X-axis motor 5, and moves the air cylinder 3 and the vibration pen 1 in the X-axis direction. The movement amount in the Y-axis direction is transmitted from the Y-axis amplifier 9 to the Y-axis ball screw 6 via the Y-axis motor 7,
The air cylinder 3 and the vibration pen 1 are moved in the Y-axis direction. Further, the vibration pen 1 is held in a floating state by the air cylinder 3. The mechanism for holding the vibration pen 1 in a floating state is described in
27397. The vibrating pen 1 is pressed against the workpiece 2 while being floated by the air cylinder 3, and the vibrating pen 1 is moved together with the air cylinder 3 in the XY two-axis directions, thereby continuously forming points and marking lines and characters. I do.

[0004]

When marking a workpiece 2 in a cylindrical or columnar shape as shown in FIG. 4 (a) by the above-mentioned conventional apparatus, the perpendicular of the vibrating pen 1 and the workpiece 2 are marked. If the angle with the tangent exceeds a certain angle, the vibrating pen 1 cannot perform slip marking, so that the range in which marking can be performed is restricted. Experiments have confirmed that slip occurs when the angle exceeds 30 degrees as shown in FIG. 4B.

According to the present invention, the slip of the vibrating pen is suppressed by keeping the angle between the tangent of the cylindrical or columnar workpiece and the perpendicular of the vibrating pen at 0 degree, thereby suppressing the cylindrical or cylindrical workpiece. It is an object of the present invention to provide a marking device that does not limit the range in which a product can be marked.

[0006]

In order to achieve this object, a marking device according to the present invention is a marking device which presses a vibrating pen against a cylindrical or columnar workpiece to mark the surface of the workpiece. Holding means for holding the workpiece so that the vibration direction of the vibrating pen is directed to the center axis thereof; vibration pen movement control means for controlling movement of the vibration pen in the axial direction of the workpiece; Workpiece rotation control means for controlling the rotation of the work piece about the central axis is provided.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a marking device according to this embodiment. Note that components having the same reference numerals as those in FIG. 3 are the same, and a description thereof will be omitted.

In FIG. 1, reference numeral 15 denotes a connecting rod which is coaxially fixed to the drive shaft of the Y-axis motor 7 and which coaxially fixes the workpiece 2 on one side. This is a holder for rotatably holding the object 2 on the other side. That is, FIG. 1 is different from FIG. 3 in that the workpiece 2 fixed to the Y-axis motor 7 is rotated by the Y-axis motor 7 by removing the Y-axis ball screw 6 and adding the connecting rod 15 and the holder 16. It is configured to allow it.

Along with such a change, the connecting rod 15 and the holder 16 move the workpiece 2 around the center axis of the vibrating pen 1
Is held so that the vibration direction is vertical, and the arithmetic unit 10
In the axial direction, the moving distance is converted into a rotation angle of the Y-axis motor 7. In addition, the connecting rod 15 and the holding tool 16
An X-axis ball screw 4, an X-axis motor 5, an X-axis amplifier 8, and a computing unit 10 constitute a holding means for holding the workpiece 2 so that the vibration direction of the vibration pen 1 is directed to the center axis thereof.
Vibrating pen movement control means for controlling the movement of the air cylinder 3 and the vibration pen 1 in parallel with the central axis of the workpiece 2;
The Y-axis motor 7, the Y-axis amplifier 9, and the arithmetic unit 10 constitute a workpiece rotation control unit that controls the rotation of the workpiece 2 about a central axis.

The data input by the data input device 11 is confirmed on the data display 12 and, when marking is performed, the horizontal movement amount in the X-axis direction is calculated by the arithmetic unit 10.
Is calculated as in the conventional machine. When the X-axis motor 5 rotates via the X-axis amplifier 8 with the calculated command value, the air cylinder 3 and the vibration pen 1 move on the X-axis ball screw 4. On the other hand, the cylindrical workpiece 2 is fixed to the Y-axis motor 7 by the connecting rod 15 and the holder 16. The arithmetic unit 10 is Y
A command value is given to the Y-axis amplifier 9 as a rotation angle of the Y-axis motor 7 as a value obtained by dividing the axial movement distance by the radius of the circle of the cylindrical cross section. When the Y-axis motor 7 rotates, the fixed workpiece 2 also rotates.

FIG. 2 shows a state in which a vertical line is marked on the circumference of the cylindrical workpiece 2 by the marking device of this embodiment. In the X-axis direction, since there is no movement amount, the vibrating pen 1 is pressed against the workpiece 2 by the air cylinder 3 to make a point on the workpiece 2. On the other hand, when the arithmetic unit 10 gives a value θ obtained by dividing the length L of the vertical line to be marked shown in FIG. 2A by the radius r of the cross section to the Y-axis amplifier 9, the result is shown in FIG. As described above, the Y-axis motor 7 rotates, and the workpiece 2 fixed by the connecting rod 15 and the holder 16 rotates integrally with the drive shaft of the Y-axis motor 7. As a result, on the workpiece 2, FIG.
As shown in (c), a line 17 as a continuation of points can be marked. During the marking, the vibrating pen 1 is always perpendicular to the workpiece 2 (the angle between the tangent of the workpiece 2 and the perpendicular of the vibrating pen 1 is kept at 0 degree), so that it does not slip. .

[0012]

According to the present invention, while the work is held by the holding means so that the vibration direction of the vibrating pen is directed to the center axis of the work, the work rotation is controlled by the work rotation control means. When the vibrating pen is controlled to move in the axial direction of the workpiece by the vibrating pen movement control means while controlling the rotation of the vibrating pen, the angle between the vertical line of the vibrating pen and the tangent of the cylindrical or columnar workpiece is maintained at 0 degrees. Marking can be performed after adding. Therefore, it is possible to supply a marking device which suppresses the sliding of the vibrating pen and has no restriction on the range in which marking can be performed on a cylindrical or columnar workpiece.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a marking device of the present invention.

FIG. 2 is a diagram illustrating an example of marking on a cylindrical workpiece according to an embodiment of the marking device of the present invention.

FIG. 3 is a configuration diagram of a conventional marking device.

FIG. 4 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vibration pen 2 Workpiece 3 Air cylinder 4 X axis ball screw (vibration pen movement control means) 5 X axis motor (vibration pen movement control means) 6 Y axis ball screw 7 Y axis motor (workpiece rotation control means) 8 X Axis amplifier (vibration pen movement control means) 9 Y-axis amplifier (workpiece rotation control means) 10 Computing unit (vibration pen movement control means, workpiece rotation control means) 11 Data input device 12 Data display 13 Air supply unit 15 Connecting rod (holding means) 16 Holder (holding means)

Claims (1)

[Claims] 1. A marking device for marking a surface of a workpiece by pressing a vibrating pen against a cylindrical or columnar workpiece, wherein the vibrating pen vibrates around the center axis of the workpiece. Holding means for holding the workpiece in a direction; vibration pen movement control means for controlling the movement of the vibration pen in the axial direction of the workpiece; and workpiece rotation control means for controlling the rotation of the workpiece about a central axis. And a marking device comprising: