TWI769832B - Health prediction and diagnosis system for a grinder - Google Patents

Abstract

A health prediction and diagnosis system for a grinder, which is applicable to a first grinding plate and a second grinding plate of the steel ball grinder, and includes a detector connected to the first and second grinding plates, a central processing module having a judgment unit, a historical data recording unit, a timing unit and an alarm unit, the detector is connected to the judgment unit, which detects and transmits the damaged data of the first and second grinding plates to the judgment unit, the judgment unit compares according to the records stored in the historical data recording unit so as to determine whether the first and second grinding plates are abnormal, if abnormal, the judgment unit drives the alarm unit to release an alarm message, if no exception occurs, the timing unit records the grinding time of the first and second grinding plates and drives the alarm unit to release the alarm message after a predetermined time.

Description

Grinder Health Omen Diagnostic System

The present invention relates to the technical field of steel ball mills, in particular to a health omen diagnosis system for mills.

The production process of steel balls is mainly divided into wire coil, drawing, heading, flashing, heat treatment, grinding, lapping, The production process such as mirror treatment (super finish), cleaning (clean), quality control (quality control) and packaging (packing) can be completed. Of course, it varies slightly according to the needs of each company, but the process of producing steel balls will not deviate from the aforementioned general direction.

Because steel balls are often used in precision machinery, which requires a high degree of precision, no matter how the steel balls are processed, the steel used in precision machinery needs to be ground and ground. lapping).

The grinding disc is like a tool used in common precision machinery, and the collapse is like a damaged tool, which will scratch the surface of the steel ball; when the personnel finds the collapse, many cycles have passed, and there are many scars on the surface of the steel ball. The crash causes the steel ball to move poorly in the disk, and also indirectly causes the roundness and size requirements to exceed tolerances, so it needs to be pre-treated before the crash occurs. At each stage of ball grinding, often because of foreign matter It is damaged by falling, or improper extrusion of the grinding disc caused by abnormal operation. At present, the main way to eliminate the damage of the grinding disc is to detect the damaged steel balls through the quality inspection stage, and then check the damage of the grinding disc. However, this detection method is not only ineffective, but it is easy to produce a large number of defective steel balls, and it also causes too many defects. Cost loss of good products. In view of this, it is indeed necessary to provide a technical means to solve the problem that the existing steel ball grinding machine cannot accurately predict the wear and tear of its grinding disc.

The purpose of the present invention is to solve the problem that it is difficult to predict the health loss of the steel ball mill, which leads to the problem that the excessive wear and tear of the mill can only be detected only when a problem product occurs.

In order to achieve the aforementioned objects, the present invention is a grinding machine health omen diagnosis system, which is suitable for a first grinding disc and a second grinding disc of a steel ball mill, and the grinder health omen diagnostic system includes: a detector, The first grinding disc and the second grinding disc are connected; a central processing module has a judging unit, a historical data recording unit, a timing unit and an alarm unit, the detector is connected with the judging unit information, the The detector measures the data of the first grinding disc and the second grinding disc from the beginning to the damage and transmits it to the judging unit, and the judging unit compares the past records stored in the historical data recording unit to judge the first grinding disc. Whether the first grinding disc and the second grinding disc are abnormal, if there is any abnormality, the judging unit drives the alarm unit to issue an alarm signal. Then the timing unit records the grinding time of the first grinding disc and the second grinding disc. After the timing unit compares the past records stored in the historical data recording unit, the alarm is driven after a predetermined time. The unit issued an alert.

In a preferred embodiment, the number of the detectors is two, one of the detectors is connected to the first grinding disc, and the other is connected to the second grinding disc.

In a preferred embodiment, the number of the detector is one, and the detector is selected to be connected to one of the first grinding disc or the second grinding disc.

In a preferred embodiment, the first grinding disc uses a grinding wheel disc, and the second grinding disc uses an alloy disc.

In a preferred embodiment, the first grinding disc and the second grinding disc respectively have a plurality of grinding grooves, the frequency of each grinding groove measured by the detector is different, and the judging unit distinguishes the corresponding ones of the different frequencies. Grinding groove.

In the present invention, the first grinding disc and the second grinding disc are monitored in real time through the judging unit, and the monitoring results are compared with the information in the historical data one by one, so as to immediately know whether the first grinding disc or the second grinding disc is worn or not. Furthermore, the present invention records the time that the first grinding disc and the second grinding disc can maintain normal operation under normal wear and tear in the historical data, so that the alarm unit can issue a warning in advance before the damage; The detection results will be continuously stored in the historical data storage unit, so that the information in the historical data storage unit will be updated from time to time, so that the prediction results will become more accurate with the use of time; Differently judge the position of the damaged grinding groove, and then stop using the corresponding grinding groove. Even if the first grinding disc or the second grinding disc is damaged, the user can directly disable the corresponding damaged grinding groove without disassembling and inspecting it from time to time. Thus, the grinding efficiency is improved.

In another embodiment, the judging unit can not only judge whether the first grinding disc or the second grinding disc is damaged according to the drift state generated by the spectrum, thereby reducing the use of the detector, not only reducing the data generation but also Accelerates the operation speed of the central processing module, and can reduce the data exchange The misjudgment caused by interference makes the judgment more accurate.

10: The first grinding disc

20: Second grinding disc

30: Detector

40: Central processing module

41: Judgment unit

42: Historical data record unit

43: Timing Unit

44: Alarm Unit

A: Damaged line segment

B: Damaged line segment

C: damaged line segment

Fig. 1 is a perspective view of the present invention in a preferred embodiment; Fig. 2 is an exploded view of the present invention in a preferred embodiment; Fig. 3 is a side view of the present invention in a preferred embodiment; Figure 5 is a cross-sectional view based on line 5-5 in Figure 3; Figure 6 is a first grinding disc and a second grinding disc in a preferred embodiment of the present invention FIG. 7A is a schematic diagram of the frequency of the first grinding disc in a preferred embodiment of the present invention when it is damaged; FIG. 7B is a schematic diagram of the frequency of FIG. 7A corresponding to different steel ball positions; FIG. 8 is a schematic diagram of the present invention in a comparison Schematic diagram of the frequency when the second grinding disc is damaged in the preferred embodiment;

Please refer to FIG. 1 to FIG. 4 , the present invention is a grinding machine health warning diagnosis system, which is suitable for a first grinding disc 10 and a second grinding disc 20 of a steel ball mill. The grinding machine health warning diagnosis system mainly includes A detector 30 and a central processing module 40, wherein:

The detector 30 is connected to the first grinding disc 10 and the second grinding disc 20; in this embodiment, the number of the detectors 30 is two, and the two detectors 30 may be accelerometers, Laser displacement meter, vibration detector, etc. In this embodiment, the detector 30 mainly uses an accelerometer. one of the detectives The detector 30 is connected to the first grinding disc 10 , the other detector 30 is connected to the second grinding disc 20 , and the two detectors 30 are connected to the first grinding disc 10 and the second grinding disc 20 . The method belongs to the conventional technology, so it will not be described in detail here.

The central processing module 40 has a judging unit 41, a historical data recording unit 42, a timing unit 43 and an alarm unit 44, the detector 30 is connected with the judging unit 41, and the detector 30 measures the The data of the first grinding disc 10 and the second grinding disc 20 from the beginning to the damage are transmitted to the judging unit 41 , and the judging unit 41 compares the past records stored in the historical data recording unit 42 to judge the first grinding disc Whether the grinding disc 10 and the second grinding disc 20 are abnormal, if there is any abnormality, the judgment unit 41 drives the alarm unit 44 to issue an alarm. If no abnormality occurs, the timing unit 43 records the grinding time of the first grinding disc 10 and the second grinding disc 20. After the timing unit 43 compares the past records stored in the historical data recording unit 42, After a predetermined period of time, the alarm unit 44 is driven to issue an alarm signal; in this embodiment, the determination unit 41 of the central processing module 40 is a central processing unit (CPU), through which the determination unit 41 can analyze The historical data recording unit 42 stores a plurality of pieces of data of the first grinding disc 10 and the second grinding disc 20 judged by the judging unit 41 in the past to determine whether they are abnormal. The data in the historical data unit are stored through Cross-comparing multiple pieces of data, thereby obtaining the abnormal data type of the first grinding disc 10 from the multiple historical data of the first grinding disc 10, and also from the multiple historical data of the second grinding disc 20 The data type of the second grinding disc 20 of the abnormal data, so that the judgment unit 41 can instantly judge whether the first grinding disc 10 and the second grinding disc 20 are abnormal according to the data.

In this embodiment, the first grinding disc 10 uses a grinding wheel disc, and the second grinding disc 20 uses an alloy disc. Since the materials used for the first grinding disc 10 and the second grinding disc 20 are different, the The judging unit 41 collects different data of the first grinding disc 10 and the second grinding disc 20, for example For example, referring to FIG. 6 , the first grinding disc 10, which is a grinding wheel disc, has a self-sharpening effect, so its grinding strength exhibits multiple attenuation intervals and shows that the grinding strength gradually decreases, while the second grinding disc is an alloy disc. Since the disc 20 wears out slowly and has no self-sharpening effect, its grinding strength decreases linearly. Therefore, in this embodiment, most of the data of the first grinding disc 10 received by the determining unit 41 will form a plurality of attenuation interval patterns as shown in FIG. The first grinding disc 10 in the process of grinding is abnormally judged; similarly, in the present embodiment, most of the data of the second grinding disc 20 received by the judgment unit 41 will form a linear drop as shown in FIG. 6 . The second grinding disc 20 being polished is judged abnormally based on the basic form. In this way, it is known whether there is an abnormality in the first grinding disc 10 or the second grinding disc 20 during grinding.

In another embodiment, the number of the detector 30 is one, and the detector 30 is selected to be connected to the first grinding disc 10 or the second grinding disc 20, because the first grinding disc 10 and the second grinding disc 20 are sandwiched between Holds the steel ball, so the judging unit 41 receives the signal from the detector 30 which is generated by the mutual coupling of the first grinding disc 10 and the second grinding disc 20. Please refer to FIG. 7A. In this embodiment, the first grinding disc 10 and the second grinding disc 20 are coupled The grinding disc 10 is a rotating rotating disc, and the second grinding disc 20 is a fixed disc that does not rotate. Therefore, when a damaged position occurs in the first grinding disc 10, the damaged part will follow the first grinding disc. 10 rotates, and when the steel balls are ground between the first grinding disc 10 and the second grinding disc 20, due to the different initial conditions of the steel balls entering between the first grinding disc 10 and the second grinding disc 20, there is no difference. will be maintained at the same corresponding position as the first grinding disc 10, so the frequency measured by the detector 30 will be unstable, and FIG. 7A shows the frequency states of three different states. Please refer to FIG. 7B for the reasons. When the damaged position of the first grinding disc 10 completely overlaps with the steel ball, the resulting damage spectrum is strong, so the spectrum of the damaged line segment A shown in FIG. 7A is strong. When the damaged position of the first grinding disc 10 is between the corresponding Between the steel ball and the corresponding non-steel ball, the resulting damage spectrum is weaker than that of the damaged line segment A, as shown in Figure 7A, the frequency of the damaged line segment B Finally, when the damaged position of the first grinding disc 10 corresponds to the position without steel balls, the resulting damaged spectrum is the weakest, as shown in the spectrum of the damaged line segment C shown in FIG. 7A . When the damaged line segment spectrum as shown in FIG. 7A is generated, the determining unit 41 can determine that the damaged position is located in the first grinding disc 10 .

When the damaged position is located at the second grinding disc 20, since the second grinding disc 20 does not rotate during the grinding process, the steel balls will periodically pass through the damaged position, thereby generating a stable damage spectrum as shown in FIG. 8 .

Finally, the judging unit 41 can further determine the first grinding disc 10 or the second grinding disc 20 according to the different frequencies, please refer to Table 1 below:

According to the frequencies disclosed in Table 1, it can be understood that different grinding grooves of the first grinding disc 10 or the second grinding disc 20 are generated differently. Therefore, the damaged grinding grooves can be obtained according to the frequencies of different grinding grooves.

In the present invention, the first grinding disc 10 and the second grinding disc 20 are monitored in real time through the judging unit 41, and the monitoring results are compared with the information in the historical data one by one, so that the first grinding disc 10 or the second grinding disc 20 can be instantly known. Whether the grinding disc 20 is worn or not; in addition, the present invention records the time during which the first grinding disc 10 and the second grinding disc 20 can maintain normal operation under normal wear and tear in the historical data, so that the alarm unit 44 can be issued in advance before the damage. warning; and the detection results of the detector 30 will be continuously stored in the historical data storage unit, so that the information in the historical data storage unit will be updated from time to time, so that the prediction results will become more accurate as the use time is extended; Finally, the judging unit 41 can judge the position of the damaged grinding groove according to the frequency, and then stop using the corresponding grinding groove. Even if the first grinding disc 10 or the second grinding disc 20 is damaged, the user does not need to disassemble and inspect it from time to time. , the corresponding damaged grinding groove can be directly disabled, thereby improving the grinding efficiency.

In another embodiment, the judging unit 41 can not only judge whether the first grinding disc 10 or the second grinding disc 20 is damaged according to whether the frequency spectrum is shifted or not, thereby reducing the use of the detector 30, not only reducing The generation of data can speed up the operation speed of the central processing module 40 , and can also reduce misjudgments caused by mutual interference of data, so that the judgment is more accurate.

30: Detector

40: Central processing module

41: Judgment unit

42: Historical data record unit

43: Timing Unit

44: Alarm Unit

Claims (5)

A grinder health omen diagnosis system, which is suitable for a first grinding disc and a second grinding disc of a steel ball mill, and the grinder health omen diagnostic system includes: a detector connected to the first grinding disc and the The second grinding disc; a central processing module, which has a judgment unit, a historical data recording unit, a timing unit and an alarm unit, the detector is connected with the judgment unit information, and the detector measures the first The data from the beginning to the damage of the grinding disc and the second grinding disc are transmitted to the judging unit, and the judging unit compares the past records stored in the historical data recording unit to judge the first grinding disc and the second grinding disc Whether there is an abnormality, if there is an abnormality, the judging unit drives the alarm unit to issue an alarm signal. If it is compared with the past records stored in the historical data recording unit, it is judged that there is no abnormality, then the timing unit records the first After the timing unit compares the grinding time of the grinding disc and the second grinding disc according to the past records stored in the historical data recording unit, the alarm unit is driven to issue an alarm after a predetermined period of time. The grinding machine health omen diagnosis system as claimed in claim 1, wherein the number of the detectors is two, one of the detectors is connected to the first grinding disc, and the other detector is connected to the second grinding wheel plate. The grinding machine health omen diagnosis system according to claim 1, wherein the number of the detector is one, and the detector is selected to be connected to one of the first grinding disc or the second grinding disc. The grinding machine health omen diagnosis system as claimed in claim 1, wherein the first grinding disc uses a grinding wheel disc, and the second grinding disc uses an alloy disc. The grinding machine health omen diagnosis system as claimed in claim 1, wherein the first grinding disc and the second grinding disc respectively have a plurality of grinding grooves, and the frequency of each grinding groove measured by the detector is different, and is determined by The judging unit distinguishes grinding grooves corresponding to different frequencies.

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