TWM516718U - Abrasion detection module of process cutting tool - Google Patents

Description

Processing machine tool wear detection module

The invention relates to a detection module, in particular to a machining tool wear detection module.

A tool for machining a workpiece on a machine tool is usually judged by the experience of the operator or the cumulative operation time of the tool to determine whether the tool has reached an unsuitable degree of wear. To the extent that the machining accuracy of the workpiece is affected by the deterioration of the tool.

However, it is artificially determined whether the tool has reached the upper wear limit and whether the tool is replaced by another new product. The criterion for judgment is different from person to person: too conservative judgment causes the tool to reach the upper limit before the wear limit It was replaced and caused unnecessary waste; too optimistic judgment caused the tool to exceed the upper wear limit but continued to be used for machining operations, resulting in poor processing quality of the workpiece. With the cumulative machining time of the tool as the criterion, it is also subject to misalignment due to different machining conditions (such as different workpiece materials or different continuous machining times).

Therefore, the purpose of the present invention is to provide a machining tool wear detection module that accurately grasps the degree of tool wear by objective judgment.

Therefore, the new tool cutter wear detecting module is suitable for detecting the wear degree of a tool mounted on a processing machine for processing a workpiece, and includes an image picker for capturing a contour image of the tool, and a sense Measuring a vibration sensor generated by the tool during processing of the workpiece and outputting a corresponding vibration signal to be tested, and a control unit electrically connecting the image picker and the vibration sensor.

The control unit includes a spectrum analyzer that receives the vibration signal to be measured and analyzes the vibration signal to be measured to output a corresponding spectrum data to be measured, and receives a spectrum comparison of the spectrum data to be measured and compared to a reference spectrum data. And an image comparator. The image comparator receives and stores the image extractor to capture a reference contour image when the tool is not subjected to the processing wear, and the spectrum comparator does not conform to the reference spectrum. When the data is received, the image comparator receives the image of the contour to be measured of the tool and generates a difference value for the reference contour image, and the difference value exceeds a preset tolerance value. The image comparator outputs a tool change signal indicating replacement of the tool.

The function of the present invention is to compare the spectrum data to be measured outputted by the spectrum analyzer with the reference spectrum data by using the spectrum comparator, and when the comparison shows that the two spectrum data do not match, The image comparator makes a further tool wheel The image is judged so that the wear of the tool can be objectively and accurately judged to ensure the accuracy of the machining.

1‧‧‧Image capture device

2‧‧‧Vibration sensor

3‧‧‧Control unit

31‧‧‧ spectrum analyzer

32‧‧‧Spectrum Comparator

33‧‧‧Image Comparator

41‧‧‧Processing machine

42‧‧‧Workpiece

43‧‧‧Tools

5‧‧‧ Process

50~57‧‧‧Steps

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a block diagram illustrating an embodiment of the tool wear sensing module of the present invention; and FIG. 2 is A flow chart illustrating the operational flow of the embodiment.

Referring to FIG. 1, an embodiment of the tool cutter wear detecting module of the present invention is suitable for detecting the degree of wear of a tool 43 mounted on a workpiece 41 for processing a workpiece 42 corresponding to a machining operation, and includes an image capture. 1, a vibration sensor 2 and a control unit 3.

The image capturing device 1 is configured to capture a contour image of the tool 43 and capture a corresponding reference contour image before the tool 43 is in a state of being unprocessed and worn.

The vibration sensor 2 senses the vibration generated by the tool 43 when the workpiece 42 is processed, and outputs a corresponding vibration signal to be tested.

The control unit 3 is electrically connected to the image capturing device 1 and the vibration sensor 2, and includes a spectrum analyzer 31, a spectrum comparator 32 and an image comparator 33.

The spectrum analyzer 31 receives the vibration signal to be tested, and performs a vibration value multiplication analysis on the vibration signal to be tested to output a corresponding spectrum data to be measured.

The spectral comparator 32 receives the spectral data to be measured and is compared to a reference spectral data associated with the number of edges of the tool.

The image comparator 33 receives and stores the reference contour image, and when the spectrum comparator 32 does not conform to the reference spectrum data, the image comparator 33 receives the image capture again. The device 1 captures a contour image to be measured of the tool 43 and generates a difference value for the contour image to be measured, and when the difference value exceeds a preset tolerance value, the image ratio is The controller 33 outputs a tool change signal indicating replacement of the tool 43. In the present embodiment, the image comparator 33 produces the difference value associated with the length change of the tool 43 along the length direction of the pair of corresponding tools 43 and the reference contour image.

After the image changer 33 outputs the tool change signal, the control unit 3 pauses the machine tool 41 to drive the tool 43 to continue processing the workpiece 42 and outputs an inquiry message related to the spare tool. 3 When receiving an answer command that should query the message and indicate that there is no spare tool, it is determined that the tool 43 cannot be replaced and the tool 43 is finished to process the workpiece 42.

Referring to FIG. 2, one of the processes shown in FIG. 5 illustrates the operation mode of the embodiment, which includes the following steps:

In step 50, it is determined whether it is a new tool: whether the tool 43 mounted on the processing machine 41 is in a new state of unprocessed wear, and if it is in the new state, the process proceeds to step 51, and the reference contour image is captured. If it is not in the new state, the process proceeds to step 52 where the machining operation is performed.

Step 51: Capture a reference contour image: the image capture device 1 captures a contour image of the tool 43, and the image comparator 33 receives the contour image and stores it as a reference contour for a subsequent comparison reference. image.

Step 52, performing a machining operation: the processing machine 41 drives the tool 43 to perform a machining operation on the workpiece 42.

Step 53: Vibration value multiplication analysis: the vibration sensor 2 senses the vibration generated by the tool 43 when the workpiece 42 is processed, and outputs a corresponding vibration signal to be tested; and the spectrum analyzer 31 receives the signal to be tested. The vibration signal is measured, and a vibration value multiplication analysis is performed on the vibration signal to be tested to output a corresponding spectrum data to be measured.

Step 54: Determine whether the reference spectrum data is met: the spectrum comparator 32 receives the spectrum data to be measured, and compares the reference spectrum data for a number of edges pre-stored in the control unit 3 and related to the tool 43. If the spectrum data to be tested conforms to the reference spectrum data, it indicates that the tool 43 is in a normal state and can proceed to step 52; if the spectrum data to be tested does not conform to the reference spectrum data, it indicates that the tool 43 has been subjected to After some degree of wear, the process proceeds to step 55, and it is judged whether the tolerance value is met by the image measurement, and the measurement method of the image can be further used to confirm whether the wear has reached the degree of affecting the machining accuracy.

Step 55: Determine whether the tolerance value is met by image measurement: the image capturing device 1 captures another contour image of the tool 43, and the image comparator 33 receives the other contour image and temporarily stores it as The contour image to be measured is compared to the reference contour image. If the comparison result shows that the difference value between the two is within the preset tolerance value, indicating that the wear of the tool 43 has not reached the degree of affecting the machining accuracy, the step 52 can be continued; if the comparison result shows the difference between the two If the value is not within the preset tolerance value, indicating that the wear of the tool 43 has reached a level that affects the machining accuracy, the image comparator 33 outputs the tool change signal, and the control unit 3 suspends the machine tool 41 to drive the tool. The tool 43 continues machining the workpiece 42 and proceeds to step 56 to determine if there is a spare tool.

Step 56, determining whether there is a spare tool: the control unit 3 outputs an inquiry message related to the presence of the spare tool, and after receiving an answer message that the inquiry message is instructed and indicating that there is a spare tool, proceeds to step 57 to replace the tool; When receiving an answer command indicating that there is no spare tool, the control unit 3 determines that the tool 43 cannot be replaced and ends the tool 43 to machine the workpiece 42.

Step 57, Replace Tool: Remove the tool 43 that has reached the upper wear limit and replace it with the new spare tool.

Through the above description, the above embodiment has the following advantages:

1. The spectrum analyzer 31 receives and analyzes the vibration signal to be measured outputted from the vibration sensor 2 to generate the spectrum data to be measured, and the spectrum comparator 32 further compares the spectrum data to be measured with the spectrum. The reference spectrum data is compared, and when the comparison shows that the two spectrum data do not match, the image comparator 33 is further used to perform the tool contour image judgment, so that the wear of the cutter 43 can be objectively and accurately determined. And to ensure the accuracy of the processing.

2. The image comparator 33 can conveniently generate the difference value related to the length change of the tool 43 by comparing the length of the pair of the tool 43 to the reference contour image in the longitudinal direction of the pair of the tool 43. The length is the standard for judging tool wear.

3. After the control unit 3 outputs the tool change signal to the image comparator 33, the tool 43 is paused to process the workpiece 42 and an inquiry message related to the presence of the spare tool is outputted, thereby ensuring that the workpiece 42 is not protected. The tool 43 that has reached the upper limit of wear continues to be processed, resulting in poor quality. The operator can search for a spare tool at the time of the pause, and reply to the inquiry message after the search is completed for the control unit 3 to judge whether to continue or end the machining operation.

In summary, it is indeed possible to achieve the purpose of the novel.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧Image capture device

2‧‧‧Vibration sensor

3‧‧‧Control unit

31‧‧‧ spectrum analyzer

32‧‧‧Spectrum Comparator

33‧‧‧Image Comparator

41‧‧‧Processing machine

42‧‧‧Workpiece

43‧‧‧Tools

Claims (4)

The utility model relates to a machining tool wear detecting module, which is suitable for detecting the wear degree of a tool installed in a processing machine for processing a workpiece, and comprises: an image capturing device for capturing a contour image of the tool; and a vibration sensing Sensing the vibration generated by the tool when the workpiece is processed, and outputting a corresponding vibration signal to be tested; and a control unit electrically connecting the image picker and the vibration sensor, and including a spectrum analysis Receiving the vibration signal to be tested, and analyzing the vibration signal to be tested to output a corresponding spectrum data to be measured, a spectrum comparator, receiving the spectrum data to be measured, and comparing the data to a reference spectrum and an image Comparing, receiving and storing the image extractor to capture a reference contour image when the tool is not subjected to processing wear, and the spectrum comparator does not conform to the reference spectrum data And the image comparator receives the image of the contour to be measured of the tool and generates a difference value for the reference contour image, wherein the difference value exceeds a preset value. When the value of the image outputs an instruction of replacing the tool than the tool change signal. The processing tool tool wear detecting module according to claim 1, wherein the image comparator generates a correlation with the length of the tool along the length direction of the pair of corresponding tools to the reference contour image. The difference value of the change. The processing tool tool wear detecting module according to claim 2, wherein the control unit further suspends the tool to process the workpiece and outputs an inquiry related to the spare knife after the image changer outputs the tool change signal. The message, when the control unit receives an answer message that should query the message and indicates that there is no spare tool, determines that the tool cannot be replaced and ends the tool to process the workpiece. The processor tool wear detection module of claim 1, wherein the spectrum analyzer performs a vibration value multiplication analysis to output the spectrum data to be measured, and the reference spectrum data is related to the number of edges of the tool.