JPH0611980U - Marking device - Google Patents

Abstract

(57) [Summary] [Structure] Set the diamond cutter part 2 to the axis O of the bit 1.
Set the position eccentric with respect to the blade edge 2
a is formed into a curved surface, a spring member 5 for urging a spring force F toward the tip in the axial direction is provided to the bit 1, and a rotation driving means 6 for rotating the bit 1 at the time of marking.
To prepare. [Effect] Even if the work W has a relatively high hardness and a low toughness such as glass, it is possible to eliminate the risk of cracks and the like during marking, and to perform marking properly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a marking device suitable for marking characters, symbols or patterns on a main surface of a work such as glass having a relatively high hardness and a low toughness.

[0002]

[Prior art]

 A conventional device of this type is shown in FIG. In FIG. 3, reference numeral 1 is a marking bit, and a diamond cutter portion 12 having an acute-angled cutting edge 12a (FIG. 4) is provided on the tip side thereof. 3 is a bit feed mechanism for displacing the bit 1 in the X-axis direction and the Y-axis direction along the main surface of the glass M as a work and in the Z-axis direction orthogonal to these, and 4 is the bit feed mechanism through the bit feed mechanism 3 1 is a control device that displaces 1 in the above-mentioned axial directions by numerical control, and is configured by a microcomputer or the like.

In the above configuration, first, the marking bit 1 is displaced in the Z axis direction via the bit feed mechanism 3 to press the cutting edge 12a of the diamond cutter portion 12 against the main surface of the glass M. In this state, if the displacement of the bit 1 in the X-axis and Y-axis directions is numerically controlled in accordance with the displacement amount set in advance by the control means 4, the cutting edge 12a of the diamond cutter portion 12 will be moved along with the displacement of the bit 1. The main surface of the glass M is scratched and a predetermined mark is engraved.

[0004]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional configuration, the cutting edge 12a of the diamond cutter portion 12 has an acute angle shape, and the cutting edge 12a is provided with a constant mechanical pressing force on the axis O of the bit 1 so that the main surface of the glass M is Since the bit 1 is displaced while being pressed against, the main surface of the glass M is susceptible to the wedge action by the cutting edge 12a of the diamond cutter portion 12, and the reaction force is concentrated, resulting in the glass M being cracked or significantly. Had a risk of breaking the glass M.

The present invention has been made to solve the problems of the above-mentioned conventional ones, and an object thereof is to provide a marking device capable of performing proper marking without damaging the work. I am trying.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention, if indicated by reference numerals in the drawings, shifts in the X-axis direction and the Y-axis direction along the main surface of the work M and in the Z-axis direction orthogonal thereto. The diamond cutter part 2 on the tip side of the marking bit 1 that is set to be possible is pressed against the main surface of the work M, and the displacement of the bit 1 in the X-axis and Y-axis directions is numerically controlled to control the main surface of the work M. In the marking device for marking against the bit 1, the diamond cutter portion 2 is set at a position eccentric with respect to the axis O of the bit, and the cutting edge 2a of the cutter portion 2 is formed into a curved surface. Is provided with a spring member 5 for urging a constant spring force toward the tip in the axial direction, and is provided with a rotation driving means 6 for rotating the bit 1 around the axial center at the time of marking. thing A.

[0007]

[Action]

 According to the present invention, the marking bit 1 is displaced in the Z-axis direction and the cutting edge 2a of the diamond cutter part 2 is brought into contact with the main surface of the workpiece M, while rotating the bit 1 by the rotation driving means 6. , The main surface of the work M is scraped by the cutting edge 2a of the diamond cutter 2 and a predetermined mark is formed by the numerical displacement in the X-axis and Y-axis directions.

At the time of marking, the diamond cutter portion 2 receives the spring force from the axial direction of the bit 1 and presses the work M by the curved surface of the cutting edge 2a, so that the wedge action received by the work M is suppressed, Since the cutting edge 2a swivels at the eccentric position, the stress on the work M is dispersed in the swivel direction, and therefore, even if the work M is glass or the like, cracking is less likely to occur. Even if the cutting edge 2a has a curved surface, a good marking state can be obtained by adjusting the spring force and setting an appropriate pressing force.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a marking device according to an embodiment of the present invention. The same parts as those of the conventional device shown in FIG.

In FIG. 1, reference numeral 2 denotes a diamond cutter portion provided on the tip side of the marking bit 1, which is set at a position eccentric to the axis O of the bit 1 as shown in FIG. The cutting edge 2a is formed into a curved surface.

Reference numeral 5 denotes a compression coil spring as a spring member, which applies a spring force F to the bit 1 from the axial center O 2 direction toward the tip side. Reference numeral 6 is a motor as a rotation driving means for rotating the bit 1 around the axis O during the marking operation.

Next, the operation of the above configuration will be described. First, the marking bit 1 is moved in the Z-axis direction by the bit feeding mechanism 3 and the cutting edge 2a of the diamond cutter portion 2 is brought into contact with the main surface of the glass M as a workpiece. At this time, since the compression coil spring 5 applies a spring force F toward the tip side to the bit 1, the cutting edge 2a of the diamond cutter portion 2 presses the main surface of the glass M with a constant spring force F. Will be done.

In this state, the bit 1 is rotated by the motor 6 and, at the same time, the bit feeding mechanism 3 shifts the bit 1 in the X-axis and Y-axis directions. This shift is numerically controlled according to the shift amount preset by the controller 4. Then, due to the rotation of the bit 1, the cutting edge 2a of the diamond cutter portion 2 turns around the axis O of the bit 1 and scrapes the main surface of the glass M by the amount of the displacement, so that the main surface of the glass M Will be automatically marked with certain characters.

Here, since the cutting edge 2a of the diamond cutter portion 2 is in contact with the main surface of the glass M at the curved surface and is pressed by the spring force F from the direction of the axis O, the marking is performed. While the wedge action on the main surface of the glass M is suppressed during operation, the curved cutting edge 2a swivels around the axis O to disperse stress in the swirling direction. As a result, it is possible to prevent the glass M from being cracked or broken.

Further, even if the cutting edge 2a of the diamond cutter portion 2 is a curved surface, it is possible to secure an effect for necessary scraping simply by adjusting the spring force F and appropriately setting the pressing force. It is possible to obtain various marking states. Of course, at this time, more preferable results can be obtained by appropriately selecting and setting the curvature of the curved cutting edge 2a.

In the above example, the work M is made of glass, but the work M is not limited to this.

[0017]

[Effect of device]

 As described above, according to the present invention, the diamond cutter portion at the tip of the marking bit is set to an eccentric position, the cutting edge is curved, and the spring force is applied toward the tip side in the axial direction. Since the marking operation is performed while rotating the bit, the wedge action by the cutting edge is suppressed and the concentration of stress is avoided, so there is no risk of cracks or cracks during marking when the work is glass, etc. Can be properly marked.

[Brief description of drawings]

FIG. 1 is a block diagram showing a marking device according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a diamond cutter portion at a tip of a marking bit in the same embodiment.

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

FIG. 4 is an explanatory diagram of a diamond cutter portion at the tip of a conventional marking bit.

[Explanation of symbols]

 1 Marking Bit 2 Diamond Cutter 2a Blade Edge 4 Control Device 5 Spring Member 6 Rotation Drive Means F Spring Force M Workpiece O Shaft Center of Marking Bit

Claims (1)

[Scope of utility model registration request] 1. A diamond cutter portion on the tip side of a marking bit, which is set to be movable in the X-axis direction and the Y-axis direction along the main surface of the work and in the Z-axis direction orthogonal thereto, is provided on the main surface of the work. Press and press the X of the above bit
In a marking device for numerically controlling the displacement in the axis and Y-axis directions to mark the main surface of a workpiece, the diamond cutter portion is set at an eccentric position with respect to the axis of the bit, and the cutting edge of the cutter portion is set. Is formed into a curved surface, a spring member for urging a constant spring force toward the tip in the axial direction is provided to the bit, and rotation driving means for rotating the bit around the axis at the time of marking is provided. A marking device characterized in that