JP3013548B2 - A marking method that improves the character quality at the start and end points - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking method for improving the character quality of a starting point and an ending point when performing marking.

[0002]

2. Description of the Related Art Next, the configuration of a conventional marking device will be described with reference to FIG. 3 is an air pen, 2 is a workpiece, 4 is an NC device, 5 is a motor, 6 is a ball screw, 7 is an air cylinder, and 8 is an air supply unit.
The air pen 1 moves on the XY axes on the ball screw 6 by a value given from the NC device 4 to the motor 5.

Next, the operation of the air pen 1 shown in FIG. 3 will be described with reference to FIG. When air is supplied from the air supply unit 8 to the air cylinder 7, the air pen 1 can be moved in three stages of upper, middle, and lower as shown in FIG. 4, and the vibration of the air pen 1 can be started or stopped. The structure of the air pen 1 is described in Japanese Patent Publication No. 56-7084, and the vibration of the air pen 1 is described in, for example, Japanese Patent Publication No. 3-27397.

In FIG. 3, after the air pen 1 is lowered at the starting point to start the vibration of the air pen 1, a timer is provided on software until the vibration is stabilized, and then the air pen 1 is moved to the processing end point. At the processing end point, the vibration of the air pen 1 is stopped, and the air pen 1 is raised to complete a series of markings.

[0005]

Next, the state of processing the letter "L" according to the prior art will be described with reference to FIG. FIG. 5A is a plan view, and FIG. 5A is an AA cross-sectional view.

[0009] 9A in FIG. 5A is a starting point, and the dent is larger than portions other than the starting point. This is for the following reason. When air is supplied to the air pen 1 to start vibration and the air pen 1 is moved at the same time, the vibration frequency suitable for processing has not been reached, so that the surface of the workpiece 2 is not a continuous line of points but an interval. The vacant point is stamped. In order to solve this problem, a means for providing a timer by software is used between the start of the vibration of the air pen 1 and the movement of the air pen 1, but the work piece 2 is stopped while the air pen 1 is stopped at the starting point. The embossing is repeated at the same location to deepen the dent at the starting point 9A.

[0007] 3B in FIG. 5A is the end point, and the dent is larger than the part other than the end point. This is for the following reason. At the end of processing, by stopping the air supply to the air pen 1,
Even when the vibration of the air pen 1 is stopped, the vibration of the air pen 1 is not stopped instantaneously. Since the air cylinder 7 is used,
It takes time to raise the air pen 1 and separate it from the workpiece 2. For this reason, the air pen 1 repeats embossing at the same location of the end point 9B, thereby deepening the dent.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a marking method that sets a processing start point and a processing end point in addition to a start point and an end point, and improves the character quality of the start point and the end point.

[0009]

In order to achieve this object, according to the present invention, in a marking device which moves an air pen 1 against a workpiece 2 while vibrating the pen to process a line or a character as a series of points, Start point 3B of workpiece 2
The processing start point 3A is set between the end point 3C and the processing start point 3A. At the processing start point 3A, the lowering of the air pen 1 and the vibration of the air pen 1 are started.
The air pen 1 is turned back to continue processing by setting the processing end point 3D between the starting point 3B and the end point 3C of the workpiece 2. At the end point 3C, only the vibration of the air pen 1 is stopped and the processing is turned back. Raise the air pen 1.

[0010]

Next, a marking method according to the present invention will be described with reference to FIG. 1A is a machining start point, 3B is a start point, 3
C is the end point, and 3D is the processing end point. 3B of FIG. 1 is FIG.
Corresponds to the start point 9A, and 3C corresponds to the end point 9B.

The processing start point 3A is set between the start point 3B and the end point 3C of the workpiece 2, and the processing end point 3D is set to the workpiece 2
Is set between the starting point 3A and the ending point 3C. Processing start point 3
In A, the lowering of the air pen 1 and the vibration of the air pen 1 are started, the air pen 1 is moved while processing is continued, and the starting point 3B
Then, the air pen 1 is turned back to continue the processing. At the end point 3C, only the vibration of the air pen 1 is stopped and turned back, and the air pen 1 is raised at the processing end point 3D.

Next, the processing flow of FIG. 1 will be described with reference to FIG. In step 11 in FIG. 2, the air pen 1 is lowered, the vibration of the air pen 1 is started, and the movement of the air pen 1 is started. At the start point 3B, processing is continued by turning back. In step 12, the vibration of the air pen 1 is stopped, and in step 13, the air pen 1 is raised to finish the marking.

According to FIG. 1, the vibration of the air pen 1 is stabilized by the time required to move from the processing start point 3A to the start point 3B instead of the conventional timer, so that the stamping is not repeated at the same point, and the start point 3B Deep dents can be eliminated. Further, the vibration of the air pen 1 is stopped in the time required to move from the end point 3C to the processing end point 3D. Therefore, even if it takes time until the air pen 1 is raised, the stamping is not repeated at the same position. Deep dents can be eliminated.

[0014]

According to the present invention, the machining start point and the machining end point are set between the start point and the end point, and the start point and the end point are simply turned back, so that the dents at the start point and the end point can be eliminated.
The character quality of the marking device can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a marking method according to the present invention.

FIG. 2 is a processing flow of FIG.

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

FIG. 4 is an operation explanatory view of the air pen 1 of FIG. 3;

FIG. 5 is an explanatory diagram of a processing state of a character “L” according to a conventional technique.

[Explanation of symbols]

 1 Air pen 2 Workpiece 3A Processing start point 3B Start point 3C End point 3D Processing end point 4 NC unit 5 Motor 6 Ball screw 7 Air cylinder 8 Air supply unit

Continuation of the front page (56) References JP-A-3-226388 (JP, A) JP-A-62-49508 (JP, A) JP-A-4-100687 (JP, A) JP-A-3-285769 (JP, A) JP-A-58-94927 (JP, A) JP-A-63-21809 (JP, U) JP-A-4-33573 (JP, U) JP-A-57-42719 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B44B 3/02 B41K 3/36

Claims (1)

(57) [Claims] A marking device for moving an air pen (1) against a workpiece (2) while vibrating the pen while pressing the air pen (1) to process a line or a character as a continuation of points, comprising: a starting point (3B) of the workpiece (2); Between the machining start point (3C) and the end point (3C).
A), set the air pen (1) to descend at the machining start point (3A) and start the vibration of the air pen (1), move the air pen (1) while continuing machining, and ) Is turned back to continue machining, and the machining end point (3) is between the start point (3B) and end point (3C) of the workpiece (2).
D), stop only the vibration of the air pen (1) at the end point (3C), turn it back, and raise the air pen (1) at the processing end point (3D). An improved marking method.