JPH0516992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a scribing device that automatically draws lines on a workpiece with a scribing needle.

<Prior art> For example, in manufacturing a work jig, as shown in FIG. It was placed on top and fixed, and the finished surface of the receiving piece 3 was cut little by little to match the model M, as shown in FIG.

<Problems to be solved by the invention> In the above-mentioned conventional method, in order to process the workpiece, that is, the receiving piece, etc. by matching the model, it is necessary to manufacture the model, which is costly and time-consuming, and requires cutting to match the model. Processing requires a large number of finishing steps, which also costs a lot of time and money.

<Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems of the conventional art. , a slide table equipped with a workpiece jig, and a movable body guided vertically by a guide post so as to be movable up and down in the Z-axis direction of the vertical axis are provided, and the marking device body is mounted on the movable body in the Y direction. The slide table, the movable body, and the scribing device main body are moved by an NC control device, and the scribing device main body is movable in the X-axis direction perpendicular to the axial direction. Said NC
A housing is fixed on a base that is movable by a control device, and a shaft is supported within the housing so that it can move forward and backward in the X-axis direction, a spring that is compressed when the shaft moves forward, and a spring that is compressed when the shaft moves backward. A U-shaped plate is fixed to the tip of the shaft, and a pair of scribing needles are provided at the tip of the shaft and the tip of the plate, facing each other on the center line of the shaft. At the rear end, the amount of backward movement of the shaft is detected and the NC
In this configuration, a detector that outputs a signal to a control device is arranged on the base.

<Function> The present invention moves the slide table, movable body, and marking device main body based on NC data, and automatically marks lines in the desired shape on the front and back sides of the workpiece attached to the workpiece jig using a marking needle. draw the target.

<Examples> Examples of the present invention will be described below with reference to FIGS. 1 to 5. In FIG. 1, 10 is a fixed base. On this fixed base 10, Y
A slide table 11 movable in the axial direction and a guide post 13 erected in the vertical direction are provided. A work jig 12 is provided on the slide table 11 for setting a work W such as a piece board, which is an object to be marked.

On the other hand, the guide post 13 has a vertical axis Z.
A moving body 14 is guided so as to be movable up and down in the axial direction. The movable body 14 is provided with a marking device main body 15 capable of moving forward and backward in the X-axis direction perpendicular to the Y-axis direction. Reference numeral 16 denotes a motor that moves the marking device main body 15 forward and backward.

These movements of the slide table 11, the movable body 14, and the marking device main body 15 are operated by a well-known NC control device and a feed movement device (not shown).

Next, the specific structure of the marking device main body 15 will be explained with reference to FIGS. 2 to 5. A base 17 is provided on the movable body 14 and is moved forward and backward in the X-axis direction by the motor 16, and a housing 18 having a cylindrical inner diameter is fixed on the base 17. Inside the housing 18, a bearing bush 20 is provided so that the shaft 19 can move forward and backward in the X-axis direction.
a, 20b. This axis 19
A washer 21 is fixed by a pin 22 to the outer diameter of the approximately central portion in the front-rear direction, and this washer 2
Buttons 23 that sandwich 1 and also serve as spring holders on the front and back
a and 23b are slidably fitted together. A spring 24 is provided between the bushes 23a, 23b and the bearing bushes 20a, 20b, respectively.
a and 24b are interposed to constantly urge the shaft 19 to its neutral position in the axial direction. 27a and 27b are end caps at both ends of the housing 18.
The shaft 19 has two surfaces extending slightly in front of the rear end, and is inserted into a plate 31 formed to sandwich these two surfaces to prevent rotation.

A U-shaped plate 25 is fixed to the distal end of the shaft 19, and scribing needles 26a, 2 are provided on the distal end surface of the shaft 19 and the distal end of the plate 25, facing each other on the axis of the shaft 19.
6b is fixed.

A detector 29 for detecting the amount of backward movement of the shaft 19 is installed on the base 17 on the rear end side of the shaft 19, and a pin 2 attached to the detection shaft 30 on the rear end surface of the shaft 19 is installed on the base 17.
8 are in contact. This detector 29 is connected to the shaft 1
The detection signal of the forward/backward movement amount of No. 9 is sent to the NC control device.

Next, the operation of the present invention will be explained. The workpiece W set on the workpiece jig 12 is positioned between the scribing needles 26a and 26b, as shown in FIG. When marking the back side of the workpiece W, that is, the left side of the workpiece W in FIG. 3, the marking device main body 15 is moved forward (moved to the right in FIG. 3), as shown in FIG. The scribing needle 26a on the tip side of the shaft 19 is brought into contact with the back surface of the workpiece W. The contact pressure of the scribing needle 26a is adjusted depending on the thickness of the scribing line and the hardness of the work W.

That is, after the scribing needle 26a comes into contact with the workpiece W due to the forward movement of the scribing device main body 15, the shaft 1
9 and the housing 18 move relative to each other. In other words,
The forward movement of the shaft 19 is stopped and the housing 18 is moved forward. As a result, the spring 24b on the rear side is compressed between the bearing bush 20b and the bush 23b in contact with the washer 21, and the force of the compressed spring 23b acts on the shaft 19 as a force in the forward direction. The needle 26a acts as a force to bite into the workpiece W. The amount of relative movement between the shaft 19 and the housing 18 is measured by a detector 29, and the contact pressure of the scribing needle 26a is automatically adjusted to a preset value by the NC control device based on a signal of this amount.

Then, by controlling the movement of the slide table 11 and moving body 14 in a predetermined direction based on the NC data, a marking line of a desired shape is drawn on the workpiece W. At this time, if the marking surface of the workpiece W is curved forward or backward, the shaft 19
moves forward or backward, this is detected by the detector 29, and the marking device main body 15 is moved forward or backward by the NC control device to set the marking needle 2 that was initially set.
The contact pressure (amount of penetration) is set to 6a, and the marking line is kept at a constant thickness. When marking the surface side of the workpiece W, a marking line can be drawn in the same manner as described above by bringing the marking needle 26b provided on the plate 25 side into contact with the workpiece W as shown in FIG.

<Effects of the Invention> As described above, according to the present invention, it is possible to automatically draw a marking line of a desired shape on both the back and front of a workpiece using NC control, and it is possible to draw a marking line of a desired shape on both the back and front of the workpiece. Since cutting is performed based on the marking lines, there is no need for many finishing steps due to model matching, resulting in lower costs and shorter machining time. Furthermore, since the contact pressure of the marking needle is automatically adjusted according to the shape of the workpiece, it is possible to mark with a marking line of a preset constant thickness.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the present invention, Fig. 2 is an external view of the marking device main body, Fig. 3 is a sectional view taken along the line of Fig. 2,
FIG. 4 is a sectional view taken along the line shown in FIG. 3, FIG. 5 is a view taken along the arrow in FIG. 3, FIGS. 6 and 7 are sectional views explaining the operation of the device of the present invention, and FIG. figure,
FIG. 9 is an enlarged view of the view in the direction of arrow A in FIG. 8. 10... fixed base, 11... slide base, 12... work jig, 13... guide post, 14... movable body, 15... marking device main body,
17...Base, 18...Housing, 19...
Shaft, 20a, 20b...Bearing bush, 2
1...Watsushiya, 23a, 23b...Butsuyu,
24a, 24b... Spring, 25... Plate, 2
6a, 26b...Scoring needle, 29...Detector, 3
0...Plate.

Claims (1)

[Claims] 1. On a fixed base, a slide table that is movable in the Y-axis direction within a plane and is equipped with a work jig and is guided so as to be movable up and down in the Z-axis direction of the vertical axis by a guide post that stands vertically. a movable body, and a scribing device main body is mounted on the movable body.
The slide table, the movable body, and the scribing device main body are moved by an NC control device, and the scribing device main body is movable in the X-axis direction perpendicular to the axial direction. A housing is fixed on a base movably provided by the NC control device, and a shaft is supported within the housing so as to be movable forward and backward in the X-axis direction, a spring is compressed by the forward movement of this shaft, and a spring is compressed by the forward movement of this shaft. A spring compressed by movement is provided, a U-shaped plate is fixed to the tip of the shaft, and a pair of scribing needles are provided at the tip of the shaft and the tip of the plate, facing each other on the center line of the shaft, An automatic scribing device characterized in that a detector is arranged on the base at the rear end of the shaft to detect the amount of backward movement of the shaft and send a signal to the NC control device.