KR20120065471A - Tool broken detector - Google Patents

Abstract

PURPOSE: A bidirectional tool broken detector is provided to reduce installation space and to detect damages of bidirectional tools. CONSTITUTION: A bidirectional tool broken detector(100) includes a device housing, a common sensor, a sensor block, a common moving block, and an elastic member. The device housing has a first, and a second sensing hole. A horizontal tool(5) is partly inserted into the end part of the first sensing hole to be detected. A vertical tool(7) is partly inserted into a side of the second sensing hole to be detected. The common detection sensor senses a damage of horizontal and vertical tools. The common moving block is installed in the device housing adjacent to the first and second sensing hole. If the horizontal tool or the vertical tool is inserted through the corresponding sensing hole and is pressurized, the common detection sensor generates a sensing signal as the common moving block moves to the common detection sensor. The elastic member is arranged between the common moving block and a sensor support block.

Description

Bi-directional tool breakage detector for machine tools

The present invention relates to a device for detecting a breakage of a tool, and more particularly, to a bidirectional tool breakage detection device for a machine tool capable of detecting whether a tool is broken in a bidirectional direction.

Various types of machine tools are widely used, including turning centers, machining centers, NC borings, door-type machining centers, swiss turns, and electric discharge machines, each of which has functions and roles, and is widely used throughout the industry.

Hereinafter, the description will be made simply as a machine tool without limiting the type.

Among the functions of machine tools, there is a work for cutting or cutting holes or grooves in a work called a workpiece. This can be done by a tool called a drill.

Even in the cutting operation, various drills may be used depending on the degree of cutting, and a plurality of drills having different arrangement directions may be used depending on the cutting direction.

Hereinafter, a drill for performing a cutting operation in a horizontal direction based on the work is called a sleeve holder drill, and a cutting operation in a vertical direction on the basis of the direction intersecting the sleeve holder drill, that is, the work, is performed. The drill in progress is called a cross holder drill.

As described above, since the degree of cutting operation may vary depending on the workpiece, a plurality of sleeve holder drills and cross holder drills are provided in a state where the sleeve holder drill and the cross holder drill cross each other, and the workpiece is processed while being operated automatically.

On the other hand, after the drill is in progress, it is necessary to detect (check) whether the drill is broken (or worn out). Otherwise, using the damaged drill as it is may result in poor quality of the workpiece.

For this reason, the tool breakage detection device for detecting whether the drill is broken is provided in the machine tool.

Tool breakage detection device is provided to selectively protrude from one side of the machine tool body, and detects the damage in the state in which the front end portion of the sleeve holder drill or cross holder drill is inserted.

However, since the tool breakage detection device known to date has a structure capable of detecting the breakage of only one of the sleeve holder drill or the cross holder drill, the detection of the damage to the remaining drills is It actually caused an undetectable problem.

For example, if the sleeve holder drill has a structure capable of detecting whether it is broken, it is not possible to detect whether the cross holder drill cross-displaced to the sleeve holder drill is broken. In addition, a separate rotating structure for rotating the cross holder drill toward the sleeve holder drill may be added, or a tool breakage detection device dedicated to the cross holder drill may be further applied. Therefore, there is no choice but to create a very complicated problem structurally, an appropriate alternative is required.

Accordingly, the present invention has been made to solve the problems described above, the purpose of which is to be applied in common to all the two-way tool (tool) to proceed the machining work along the direction in the cross-positioned state while the damage It is possible to provide a two-way tool breakage detection device for machine tools that can detect whether or not to reduce installation space and simplify the structure.

In order to achieve the above object, a first sensing hole (110a) is formed at the end of the horizontal tool (partially inserted tool) is formed, and the vertical tool (part) is partially inserted into the side sensing A device housing 110 in which the second sensing hole 110b is formed; A common detection sensor (120) provided in the device housing (110) for detecting whether the horizontal tool and the vertical tool are damaged in common; A sensor support block (130) for supporting the common detection sensor (120) in the device housing (110); The common sensing sensor is provided in the device housing 110 adjacent to the first and second sensing holes 110a and 110b, and when the horizontal tool or the vertical tool is inserted and pressed through the sensing hole. A moving block 140 moving toward 120 to generate a detection signal to the common sensor 120; And an elastic member 150 disposed between the common moving block 140 and the sensor support block 130 to return the common moving block 140 to its original position. do.

In addition, the present invention further provides the following specific embodiments of the above-described embodiment of the present invention.

According to an embodiment of the present invention, the shared moving block 140 may include: a first piston block 141 having an outer surface disposed in the first and second sensing holes 110a and 110b; And a second piston block 142 inclined to abut the first piston block 141.

According to one embodiment of the invention, the first piston block 141 is characterized in that the vertical tool has a structure that can move along the inclined surface inclined contact with the second piston block 142 when pressed in the vertical direction. do.

According to an embodiment of the present invention, a bracket (111) for supporting the device housing (110); And an actuator 113 connected to the bracket 111 to move the device housing 110 so that the device housing 110 can be advanced or retracted toward the horizontal tool or the vertical tool. It is characterized by.

According to the present invention, it is possible to detect the breakage of the two-way tool (process) in the machining operation along the direction in the cross-positioned state to each other while being able to detect the breakage can reduce the installation space as well as structural There is also an effect that can be simplified.

1 is a perspective view showing a cutting operation as a perspective view of a machine tool to which a bidirectional tool breakage detection apparatus according to an embodiment of the present invention is applied.
Figure 2 is a perspective view of the machine tool showing the operation of the sleeve holder drill is detected in the two-way tool breakage detection device.
3 is an enlarged view illustrating main parts of FIG. 2;
Figure 4 is a perspective view of the machine tool showing the operation of detecting the cross holder drill in the two-way tool breakage detection device.
5 is an enlarged view illustrating main parts of FIG. 4;
6 is a perspective view of the bidirectional tool breakage detection device for the machine tool shown in FIG.
7 is a front view of FIG. 6;
8 is a cross-sectional view taken along line AA of FIG. 7.
9 and 10 are the operation of the bi-directional tool breakage detection device, respectively.

Hereinafter, an embodiment of a bidirectional tool breakage detection apparatus for a machine tool according to the present invention will be described with reference to FIGS. 1 to 8.

1 is a perspective view showing a cutting operation as a perspective view of a machine tool is applied to a two-way tool breakage detection apparatus according to an embodiment of the present invention, Figure 2 is a machine tool showing the operation of the sleeve holder drill is detected in the two-way tool breakage detection device 3 is an enlarged view of a main part of FIG. 2, FIG. 4 is a perspective view of a machine tool showing an operation in which a cross holder drill is detected by a bidirectional tool breakage detection device, FIG. 5 is an enlarged view of a main part of FIG. 1 is a perspective view of the bidirectional tool breakage detecting apparatus for the machine tool shown in FIG. 1, FIG. 7 is a front view of FIG. 6, FIG. 8 is a sectional view taken along line AA of FIG. 7, and FIGS. Operation diagrams.

As shown in these drawings, the bidirectional tool breakage detection apparatus 100 (see FIG. 6) of the present embodiment may be applied to a machine tool that performs a cutting operation as shown in FIG. 1.

The bidirectional tool breakage detection apparatus 100 may be an apparatus integrated with the machine tool illustrated in FIGS. 1, 2, and 4, or may be used after being manufactured separately. Any form should fall within the scope of the present invention.

In the machine tool shown in FIG. 1, a plurality of cutting tools are disposed in front of the chuck 3 disposed in the front center area of the machine tool main body 1 and are advanced back and forth in the horizontal direction toward the chuck 3. A horizontal tool 5 and a plurality of vertical tools 7 arranged above the chuck 3 and descending in a vertical direction toward the chuck 3 to perform a cutting operation are provided.

The horizontal tool 5 and the vertical tool 7 are provided five by one, and the cutting work in the corresponding direction is performed. Of course, the number of tools 5 and 7 is only one example and can be changed if necessary.

In addition, the horizontal tool 5 and the vertical tool 7 illustrated in FIG. 1 may be various types of cutting tools for a cutting operation.

However, hereinafter, the horizontal tool 5 will be referred to as a sleeve holder drill 5 and the vertical tool 7 will be described as a cross holder drill 7 for convenience. .

As such, since the horizontal tool 5 and the vertical tool 7 are provided with a drill, hole or groove processing is possible in addition to the cutting operation. Of course, these matters are merely examples, and the scope of the present invention does not need to be limited to the objections.

Meanwhile, as described above, after the cutting operation is performed as shown in FIG. 1 using the sleeve holder drill 5 and the cross holder drill 7, the sleeve holder drill 5 and the cross holder drill 7 may be damaged ( Or wear) should be detected (checked). To this end, the bidirectional tool breakage detection apparatus 100 of the present embodiment is provided.

Bidirectional tool breakage detection device 100 of the present embodiment, as shown mainly in Figure 6 to 8, the device housing 110, common detection sensor 120, sensor support block 130, the common moving block 140 And an elastic member 150.

The device housing 110 supports the common detection sensor 120, the sensor support block 130, the common moving block 140, and the elastic member 150 to form an exterior of the bidirectional tool breakage detection device 100. . The inside may have a hollow circular pipe shape.

The bracket 111 having an approximately 'c' shape is connected to the rear end region of the device housing 110, and the actuator 113 is connected to the bracket 111 in parallel with the device housing 110.

The actuator 113 may be a hydraulic, pneumatic or hydraulic pneumatic composite cylinder having a cylinder body 113a and a cylinder rod 113b.

The cylinder body 113a is fixed to the machine tool body 1, and the cylinder rod 113b is connected to the bracket 111. Therefore, when the length of the cylinder rod 113b is extended, the device housing 110 moves in the + X direction of FIG. 7, and when the length of the cylinder rod 113b is reduced, the device housing 110 moves in the -X direction of FIG. 7. Can be.

The apparatus housing 110 is moved in the + X direction of FIG. 7 as the apparatus housing 110 is inserted into the front part of the machine tool body 1 as shown in FIG. 1, and the apparatus housing 110 is illustrated in FIG. 7. 2 and 4 is a state in which the device housing 110 protrudes to the front portion of the machine tool body 1 as shown in FIGS.

As described above, the sleeve holder drill 5 and the cross holder drill 7 are detected while the device housing 110 protrudes.

For reference, H illustrated in FIG. 7 corresponds to a stroke distance at which the device housing 110 is moved by the actuator 113. When the H1 is reached, the sensing operation is performed, and when the H2 is reached, the sensing operation is turned off. (off)

The end of the device housing 110 is formed with a first sensing hole 110a through which the sleeve holder drill 5 is partially inserted and sensed, and the side portion of the device housing 110 crossing the first sensing hole 110a. In the cross holder drill 7 is partially inserted is formed a second detection hole (110b) is detected.

Drain is a means for preventing cutting oil, etc., from the sleeve holder drill 5 or the cross holder drill 7 from flowing in the device housing 110 in a direction opposite to the first sensing hole 110a in the device housing 110. The hole 110c is formed.

The common sensor 120 is provided inside the device housing 110 and serves to detect whether the sleeve holder drill 5 and the cross holder drill 7 are damaged in common. The common detection sensor 120 may be an optical sensor, a laser sensor, or a probe.

The sensor support block 130 supports the common detection sensor 120 in the device housing 110. Therefore, there is no phenomenon that the common sensor 120 is randomly moved.

The common moving block 140 is provided in the device housing 110 adjacent to the first and second sensing holes 110a and 110b, and the sleeve holder drill 5 and the cross holder drill 7 are formed in the first and second sensing holes 110a and 110b. When inserted and pressurized through the second detection holes 110a and 110b, the common sensor 120 is moved toward the common detection sensor 120 to generate a detection signal to the common detection sensor 120.

The common moving block 140 may include a first piston block 141 having an outer surface disposed in regions of the first and second sensing holes 110a and 110b and an inclined engagement with the first piston block 141 in a wedge structure. 2 piston block 142 is provided. In the drawing, a stepped portion is formed at one end of the first piston block 141, but this may be omitted if necessary.

Since the common moving block 140 is provided with the first and second piston blocks 141 and 142 engaged with each other in a wedge structure, the bidirectional tool breakage detection device 100 according to the present embodiment has a sleeve holder drill 5 and a cross holder. It is sufficient to be common to all the drills 7.

For example, when the sleeve holder drill 5 is inserted into the first sensing hole 110a and pressed, the sleeve holder drill 5 moves the first and second piston blocks 141 and 142 in the longitudinal direction of the device housing 110. Since it becomes a form which presses integrally, application is possible.

On the contrary, when the cross holder drill 7 is inserted into the second sensing hole 110b and pressed, the cross holder drill 7 crosses the first piston block 141 in the longitudinal direction of the device housing 110. After the first pressurization in the direction, the first piston block 141 is also possible to apply the second piston block 142 in the form of the second pressurization in the longitudinal direction of the device housing 110.

On the other hand, the failure of the sleeve holder drill 5 and the cross holder drill 7 may be detected by the distance between the common moving block 140, in particular, the second piston block 142 and the common detection sensor 120. For example, when the sleeve holder drill 5 having an end portion damaged or worn is inserted into the first detection hole 110a and pressed, the common moving block 140 moved toward the common detection sensor 120 has a predetermined distance. In this case, the common sensor 120 may generate a signal that determines that the sleeve holder drill 5 is defective.

Of course, when the normal sleeve holder drill 5 is inserted into the first detection hole 110a and pressed, the common detection sensor 120 generates a normal signal because the common moving block 140 moves by a predetermined distance. You can. This also applies to the cross holder drill 7 in common.

Finally, the elastic member 150 is disposed between the common moving block 140 and the sensor support block 130 and serves to elastically bias the common moving block 140 to return to the original position. It can be applied to torsion coil compression springs. The elastic member 150 is elastically expanded when the force for pressing the common moving block 140 disappears and returns the common moving block 140 to its original position.

Looking at the operation of the bidirectional tool breakage detection device 100 having such a configuration as follows.

2 and 3, the sleeve holder drill 5 is inserted into the first sensing hole 110a and pressed.

Then, the insertion end of the sleeve holder drill 5 is configured to integrally press the first and second piston blocks 141 and 142 in the longitudinal direction of the device housing 110 as shown in FIG. 9, and thus the second piston block 142. ) Is approached toward the common sensor 120 to cause the common sensor 120 to generate a detection signal.

If the end of the sleeve holder drill 5 is broken or worn, a bad signal will be generated, otherwise a normal signal will be generated.

This time, the cross holder drill 7 is inserted into the second sensing hole 110b and pressed as shown in FIGS. 4 and 5.

Then, the insertion end of the cross holder drill 7 is in the form of pressing the first piston block 141 first in the direction crossing the longitudinal direction of the device housing 110 as shown in FIG. 10, and then the first piston block 141. Since the second piston block 142 is pressurized in the longitudinal direction of the device housing 110 in the second direction, as a result, the second piston block 142 is also approached toward the common detection sensor 120 and thus the common detection sensor ( 120 allows a sense signal to be generated.

If the end of the cross holder drill 7 is broken or worn, a bad signal will be generated, otherwise a normal signal will be generated.

As described above, according to the present invention, the two-way tool (tool 5, 7) which performs the machining work along the corresponding direction in the state of being cross-positioned with each other while being applied in common can detect the damage whether the installation space It can be reduced as well as simplified in structure.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

5: sleeve holder drill 7: cross holder drill
100: bidirectional tool breakage detection device 110: device housing
110a: first sensing hole 110b: second sensing hole
111: bracket 113: actuator
120: common detection sensor 130: sensor support block
140: common moving block 141: first piston block
142: second piston block 150: elastic member

Claims (4)

At the end, a first sensing hole 110a is formed to partially detect a horizontal tool and a second sensing hole 110b is formed to partially detect a vertical tool. Apparatus housing 110;
A common detection sensor (120) provided in the device housing (110) for detecting whether the horizontal tool and the vertical tool are damaged in common;
A sensor support block (130) for supporting the common detection sensor (120) in the device housing (110);
The common sensing sensor is provided in the device housing 110 adjacent to the first and second sensing holes 110a and 110b, and when the horizontal tool or the vertical tool is inserted and pressed through the sensing hole. A moving block 140 moving toward 120 to generate a detection signal to the common sensor 120; And
Bi-directional tool breakage detection device for a machine tool comprising an elastic member 150 disposed between the common moving block 140 and the sensor support block 130 to return the common moving block 140 to its original position. The method of claim 1,
The common moving block 140,
A first piston block 141 having an outer surface disposed in an area of the first and second sensing holes 110a and 110b; And
And a second piston block (142) inclined to abut the first piston block (141). The method of claim 2,
The first piston block 141 is a two-way tool breakage detection device for a machine tool, characterized in that the vertical tool is moved along the inclined surface inclined contact with the second piston block 142 when pressed in the vertical direction . 4. The method according to any one of claims 1 to 3,
A bracket (111) for supporting the device housing (110); And
And an actuator 113 connected to the bracket 111 to move the device housing 110 so that the device housing 110 can be advanced or retracted toward the horizontal tool or the vertical tool. Bidirectional tool breakage detection device for machine tools.

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