TWM500649U - Knife tool detection device - Google Patents

Description

Tool detection device

The present invention relates to a tool detecting device, and more particularly to a tool detecting device capable of detecting the condition of a working tool.

In the metal cutting process, the state of the tool is the main key affecting product quality and production cost. When the tool is in poor condition (such as wear and tear, etc.), the tool needs to be replaced. To replace the tool too early, it will cause cost waste. If the tool is changed in a bad state, the tool will be replaced, which will result in a defective product. In particular, micro-milling is an important method for ultra-precision machining, and it can flexibly machine three-dimensional micro-sized structures. Therefore, micro-milling cutters are the key tools for micro-milling processes.

The monitoring method of the tool state is divided into indirect method and direct method. The indirect method uses the cutting process of the tool, the sound generated during the cutting, the vibration generated by the cutting machine, and the surface roughness of the product after cutting. The state of the tool wear is inferred from the wear state of the non-tool itself, such as the dimensional error. The direct method, as its name suggests, directly detects the state of the tool itself. For example, the light source illuminates the tool to observe the damage, or the tool blade is measured in volume or shape. Change to observe the condition of worn or broken tools.

Compared with the indirect method, the direct method can directly determine the knife from the state of the tool itself. With the condition, there is no need to cause the sound or vibration generated during the cutting to push back the tool by the wear or tear of the tool.

However, the direct method must be executed when the tool is stopped, so it is still not widely available in the factory.

Furthermore, the shape of the tools used today is relatively complicated. If the direct or indirect method is used, the parameters of each device are different, so it is difficult to implement tools for detecting different shapes.

Also, before performing micro-milling, it is necessary to determine the length and radius offset of the tool to facilitate the tool setting. At present, the laser is used to judge the occlusion of the tool. However, since the size of the micro-milling tool is extremely small, the measurement accuracy is greatly reduced. The measurement results are poorly repeatable and have low reliability.

Therefore, how to overcome the various problems of the above-mentioned prior art has become a difficult problem to be overcome in the industry.

In view of the above-mentioned deficiencies, the present invention provides a tool detecting device comprising: a base having a detection area; and a laser detector disposed on the base and detecting the detection in a horizontal direction relative to the detection area. a tool in the zone; and an image capture device disposed on the base and capturing an image of the tool in the detection zone in a direction perpendicular to the detection zone.

In an embodiment, the base has an accommodation space as the detection area.

In one embodiment, the laser detector includes a light exiting portion and a light projection portion, and the light emitted by the light exiting portion is received by the light projection portion through the detection region.

In one embodiment, the image capture device is a Charge-coupled Device (CCD) camera or a microscope.

In one embodiment, the image capture device includes an image capture unit for capturing the contour of the tool, and an image analysis unit for analyzing the contour of the tool.

In one embodiment, the optical detector is further included on the base and detects the tool in the detection zone in a horizontal direction relative to the detection zone. For example, the optical detector includes an image capturing unit for capturing the contour of the tool, and an image analyzing unit for analyzing the contour of the tool.

In an embodiment, the sensor is further disposed on the base to detect a transmission frequency of the tool in the detection zone during operation. For example, the sensor is a voiceprint detector or a vibration detector.

In one embodiment, the data database is included to receive or provide signal data of the image capture device and/or the laser detector.

It can be seen from the above that the tool detecting device of the present invention directly monitors the wear and damage of the tool by using the image picker and the laser detector without stopping the machine, and simultaneously has two different viewing angles to monitor Comprehensive monitoring of tool wear and damage.

1, 2, 3, 4‧‧‧ tool inspection device

10‧‧‧ Pedestal

10a‧‧‧ side

10b‧‧‧ bottom

11‧‧‧Laser detector

110‧‧‧Light Projection Department

111‧‧‧Lighting Department

12‧‧‧Image capture device

120‧‧‧Image Analysis Unit

121‧‧‧Image capture unit

13‧‧‧Optical detector

130‧‧‧Background unit

131‧‧‧Image capture unit

132‧‧‧Image Analysis Unit

14‧‧‧ Sensor

15‧‧‧Data Database

9‧‧‧Processing machine

900‧‧‧ support

911‧‧‧Tools

A‧‧‧Detection area

1 is a side view showing a first embodiment of the tool detecting device of the present invention; FIG. 2 is a side view showing a second embodiment of the tool detecting device of the present invention; and FIG. 3 is a tool detecting of the present invention. Side of the third embodiment of the device FIG. 4 is a side view showing a fourth embodiment of the tool detecting device of the present invention.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate other advantages and functions of the present invention from the disclosure of the present disclosure.

It is to be understood that the structure, the proportions, the size and the like of the drawings are only used in conjunction with the disclosure of the specification for the understanding and reading of those skilled in the art, and are not intended to limit the implementation of the present invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effectiveness and the purpose of the creation. The technical content revealed by the creation can be covered. In the meantime, the terms "upper", "bottom" and "one" as used in this specification are for convenience of description only, and are not intended to limit the scope of the invention, the relative relationship may be changed or Adjustments, if there is no material change in the content of the technology, are also considered to be the scope of implementation of this creation.

Fig. 1 is a schematic side view showing the first embodiment of the tool detecting device 1 of the present invention.

As shown in Fig. 1, the tool detecting device 1 is used to detect a tool 911 on a processing machine 9, which can be, for example, a milling or drilling machine, and when detected, the tool 911 It is in an operational state and is fixed to the support base 900 of the processing machine 9.

In the embodiment, the tool detecting device 1 includes a base 10 having a detection area A, a laser detector 11 disposed on the base 10, and an image capturing device 12.

The base 10 is formed into a concave contour structure, which is formed by the two sides 10a and a bottom portion 10b, and the side portions 10a are located above the bottom portion 10b, and an accommodation space is formed between the side portions 10a. The accommodation space is used as the detection area A for detecting the cutter 911.

The laser detector 11 is disposed in the side portion 10a of the base 10 to detect the tool 911 in the detection area A in a horizontal direction relative to the detection area A.

In this embodiment, the laser detector 11 includes a light exiting portion 111 (such as a laser projector) and a light projection portion 110 (such as a projection screen) to emit an optical signal from the light exiting portion 111 for the light projection portion. 110 received. Specifically, when the laser beam emitted by the light exiting portion 111 passes through the detection area A, the tool 911 blocks part of the light, so that the light projection portion 110 presents a black shadow of the tool 911, thereby determining the image of the tool 911. Is there a defect?

The image capturing device 12 is embedded in the bottom portion 10b of the base 10 to capture an image of the tool 911 in the detecting area A in a direction perpendicular to the detecting area A.

In this embodiment, the image capturing device 12 is a Charge-coupled Device (CCD) camera or a microscope, and the image capturing device 12 includes an image capturing device for capturing the contour of the tool 911. The unit 121 and an image analyzing unit 120 for analyzing the contour of the matching tool 911 are used to determine the wear or defect condition of the tool 911.

Fig. 2 is a side view showing the second embodiment of the tool detecting device 2 of the present invention. The difference between this embodiment and the first embodiment is that an optical detector 13 is added.

As shown in FIG. 2, the optical detector 13 is disposed in the side portion 10a of the susceptor 10, and detects a tool (not shown) in the detection area A in a horizontal direction with respect to the detection area A.

In the embodiment, the optical detector 13 includes a background unit 130, an image capturing unit 131 for extracting a tool contour, and an image analyzing unit 132 for analyzing the contour of the tool. Specifically, the image capturing unit 131 can be a CCD camera, a video recorder, a laser machine, etc., and if the image capturing unit 131 is a CCD camera or a video recorder, the background unit 130 is used to complement the image. The taking unit 131 captures the light required for the outline of the tool, and ensures that the outline of the tool captured by the image capturing unit 131 is clear. If the image capturing unit 131 is a laser machine, the background unit 130 is a light projection screen.

Fig. 3 is a side view showing the third embodiment of the tool detecting device 3 of the present invention. The difference between this embodiment and the first embodiment is that the sensor 14 is newly added.

As shown in FIG. 3, the sensor 14 is disposed in the side portion 10a of the base 10 or on the bottom portion 10b to detect the transmission frequency of the tool (not shown) in the detection area A during operation.

In this embodiment, the sensor 14 is a voiceprint detector (such as a sound sensor) to detect a change in the frequency of the sound generated when the tool operates; or the sensor 14 is a vibration detector (such as a piezoelectric device). Vibration sensor) To detect the change in vibration generated when the tool is operating.

Fig. 4 is a side view showing the fourth embodiment of the tool detecting device 4 of the present invention. The difference between this embodiment and the first to third embodiments lies in the addition of the data repository 15.

As shown in FIG. 4, the data database 15 is used to receive or provide signal data of the image capture device 12, the optical detector 13, the sensor 14, and/or the laser detector 11.

In the embodiment, the measured data is collected by the data database 15 and can also be used to compare the original state of the tool with the post-wear state to improve the comparison efficiency.

In summary, the tool detecting device 1, 2, 3, 4 of the present invention monitors the wear condition of the tool 911 in different directions by the laser detector 11 and the image picker 12, and can provide two kinds of conditions. Different test parameters are provided for reference by the user to improve the accuracy of judging the wear and tear of the tool 911.

In addition, more conditions and detection parameters of the wear or defect of the tool 911 can be obtained by the optical detector 13 or the sensor 14 or the like to improve the accuracy of determining the wear and breakage of the tool 911.

The above embodiments are intended to illustrate the principles of the present invention and its effects, and are not intended to limit the present invention. Anyone who is familiar with the art may modify the above embodiments without departing from the spirit and scope of the creation. Therefore, the scope of protection of this creation should be as listed in the scope of patent application described later.

1‧‧‧Tool detection device

10‧‧‧ Pedestal

10a‧‧‧ side

10b‧‧‧ bottom

11‧‧‧Laser detector

110‧‧‧Light Projection Department

111‧‧‧Lighting Department

12‧‧‧Image capture device

120‧‧‧Image Analysis Unit

121‧‧‧Image capture unit

9‧‧‧Processing machine

900‧‧‧ support

911‧‧‧Tools

A‧‧‧Detection area

Claims (10)

A tool detecting device includes: a base having a detecting area; a laser detector disposed on the base and detecting a tool in the detecting area in a horizontal direction relative to the detecting area; and an image picker And being disposed on the base and capturing an image of the tool in the detection area in a vertical direction relative to the detection area. The tool detecting device according to claim 1, wherein the base has an accommodation space as the detection area. The tool detecting device of claim 1, wherein the laser detector comprises a light exiting portion and a light projecting portion, wherein the light emitting portion emits light through the detecting portion for the light projecting portion to receive. The tool detecting device according to claim 1, wherein the image capturing device is a Charge-coupled Device (CCD) camera or a microscope. The tool detecting device of claim 1, wherein the image capturing device comprises an image capturing unit for capturing the contour of the tool, and an image analyzing unit for analyzing the contour of the tool. . The tool detecting device according to claim 1, further comprising an optical detector disposed on the base and detecting the tool in the detecting area in a horizontal direction with respect to the detecting area. The tool detecting device of claim 6, wherein the optical detector comprises an image capturing unit for capturing the contour of the tool, and an image analyzing unit for analyzing the contour of the tool. The tool detecting device of claim 1, further comprising a sensor disposed on the base to detect a transmission frequency of the tool in the detection zone during operation. The tool detecting device of claim 8, wherein the sensor is a voiceprint detector or a vibration detector. The tool detecting device of claim 1, further comprising a data database for receiving or providing signal data of the image picker and/or the laser detector.