CN115401597A - Health damage prediction system of steel ball grinding machine - Google Patents

Abstract

A health damage prediction system for a steel ball mill, for use with a first grinding disk and a second grinding disk of the steel ball mill, comprising: the detector is connected with the first grinding disc and the second grinding disc; the central processing module is provided with a judging unit, a historical data recording unit, a timing unit and an alarm unit, wherein the detector is in information connection with the judging unit, the detector detects that data from the first grinding disc to the second grinding disc to be damaged are transmitted to the judging unit, the judging unit compares the data according to past records stored in the historical data recording unit to judge whether the first grinding disc and the second grinding disc are abnormal or not, if the first grinding disc and the second grinding disc are abnormal, the judging unit drives the alarm unit to release alarm signals, if the first grinding disc and the second grinding disc are not abnormal after the comparison is carried out according to the past records stored in the historical data recording unit, the timing unit records the grinding time of the first grinding disc and the second grinding disc, compares the timing unit according to the past records stored in the historical data recording unit and drives the alarm unit to release the alarm signals after preset time.

Description

Health Damage Prediction System for Ball Mill

technical field

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

Background technique

The production process of steel balls is mainly divided into wire coil, drawing, heading, flashing, heat treatment, grinding, lapping, The production processes such as super finish, clean, quality control and packing can be completed. Of course, the needs of each company are slightly different, but the process of producing steel balls will not deviate from the above-mentioned general direction.

Because steel balls are often used in precision machinery, they require a high degree of precision. Therefore, no matter how the steel balls are processed, the steel used in precision machinery will eventually need to undergo a fine grinding (grinding) and a fine grinding ( lapping).

Grinding discs are like common precision machinery knives, and crashes are like damaged knives, which will scratch the surface of steel balls; by the time personnel find the crash, many cycles have passed, and many scratches have already appeared on the surface of steel balls. The crash causes the steel balls to move unsmoothly in the plate, and also indirectly causes the roundness and size requirements to be out of tolerance, so it needs to be dealt with before the crash occurs. In each stage of steel ball grinding, it is often caused by improper extrusion of the grinding disc due to foreign matter falling or human 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 inspect the damage of the grinding disc. The cost loss of defective products. In view of this, it is indeed necessary to provide a technical means to solve the problem that the existing steel ball grinder cannot accurately predict the wear condition of its grinding disc.

Contents of the invention

The purpose of the present invention is to solve the problem that it is difficult to predict the health wear and tear of the steel ball grinder, which leads to the problem that the excessive wear of the grinder must be detected in the finished product.

In order to achieve the above-mentioned purpose, the present invention is a health damage prediction system of a steel ball grinder, which is suitable for a first grinding disc and a second grinding disc of the steel ball grinder, and the health damage prediction system of the steel ball grinder includes:

a detector connected to the first grinding disc and the second grinding disc;

A central processing module has a judging unit, a historical data recording unit, a timing unit and an alarm unit, the detector is connected to the judging unit, and the detector detects that the first grinding disc and the second The data from the start to the damage of the grinding disc is transmitted to the judging unit, and the judging unit compares the past records stored in the historical data recording unit to judge whether there is any abnormality in the first grinding disc and the second grinding disc. abnormality, then the judging unit drives the alarm unit to release an alarm, and if it is judged that there is no abnormality after comparing the past records stored in the historical data recording unit, the timing unit records the first grinding disc and the second grinding disc. The grinding time of the grinding disc, after the timing unit is compared with the past records stored in the historical data recording unit, after a predetermined time passes, the alarm unit is driven to release an alarm.

In a preferred embodiment, there are two detectors, one of which 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 it 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 is a grinding disc, and the second grinding disc is 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 Grinding groove.

The present invention monitors the first grinding disc and the second grinding disc in real time through the judging unit, and compares the monitoring results with the information in the historical data one by one, so as to know whether the first grinding disc or the second grinding disc is worn in real time ; Furthermore, the present invention records the time of normal operation of the first grinding disc and the second grinding disc under normal wear and tear in the historical data, so that the alarm unit can give an early warning before damage; and the detector's The detection results will be continuously stored in the historical data storage unit, so that the information in the historical data storage unit is updated from time to time, so that the prediction results will become more accurate as the use time increases; finally, the judgment unit can be used according to different frequency Determine 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 stop using the corresponding damaged grinding groove, and then improve the Grinding efficiency.

In another embodiment, the judging unit can not only judge whether it is the first grinding disc or the second grinding disc that is damaged according to whether the frequency spectrum drifts, thereby reducing the use of detectors, not only reducing data generation but also being able to Speeding up the instruction cycle of the central processing module can further reduce misjudgments caused by data interference and make judgments more accurate.

Description of drawings

Fig. 1 is the 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;

Fig. 4 is a schematic diagram of structural links in a preferred embodiment of the present invention;

Fig. 5 is a sectional view based on section line 5-5 in Fig. 3;

6 is a schematic diagram of the grinding intensity of the first grinding disc and the second grinding disc in a preferred embodiment of the present invention;

FIG. 7A is a schematic diagram of the frequency when the first grinding disc is damaged in a preferred embodiment of the present invention;

Fig. 7B is a schematic diagram of generating the frequency of Fig. 7A corresponding to different steel ball positions;

FIG. 8 is a schematic diagram of the frequency when the second grinding disc is damaged in a preferred embodiment of the present invention.

Explanation of reference signs:

First grinding disc 10

Second grinding disc 20

Detector 30

Central processing module 40

judgment unit 41

Historical Data Recording Unit 42

Timing unit 43

Alarm unit 44

Corrupt line segment A

Corrupt line segment B

Corrupt line segment C.

Detailed ways

Please refer to Fig. 1 to Fig. 4, the present invention is a health damage prediction system of a steel ball grinder, applicable to a first grinding disc 10 and a second grinding disc 20 of a steel ball grinder, and the health damage of the steel ball grinder The prediction system mainly has 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 detector 30 is two, and the two detectors 30 can be accelerometers, Laser displacement meters, vibration detectors, etc. In this embodiment, the detector 30 mainly uses an accelerometer. One of the detectors 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 of grinding the disc 20 belongs to the known technology, so it will not be repeated 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 information, and the detector 30 detects the first A grinding disc 10 and the second grinding disc 20 are transmitted to the judging unit 41 from the beginning to the damaged data, and the judging unit 41 compares the past records stored in the historical data recording unit 42 to judge whether the first grinding Whether disc 10 and the second grinding disc 20 appear abnormal, if abnormal, then the judging unit 41 drives the alarm unit 44 to release a warning signal, if after comparing with the past records stored in the historical data recording unit 42, it is judged that there is no abnormality. Abnormal occurs, then the timing unit 43 records the duration of grinding 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 passing A predetermined time then drives this warning unit 44 to release warning; In the present embodiment, the judging unit 41 of this central processing module 40 is central processing unit (Central Processing Unit; CPU), can analyze this historical data by this judging unit 41 In the recording unit 42, there are many pieces of data of the first grinding disc 10 and the second grinding disc 20 that have been judged by the judging unit 41 in the past in the historical data unit, and the data in the historical data unit is passed through multiple data Cross-comparison, whereby the first grinding disc 10 data type of abnormal data is obtained from the historical data of the first grinding disc 10, and the abnormal data is similarly obtained from the historical data of the second grinding disc 20 The data type of the second grinding disc 20 is such that the judging unit 41 can judge in real time 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 data collected by the judging unit 41 on the first grinding disc 10 and the second grinding disc 20 are not the same. For example, please refer to FIG. The grinding intensity presents multiple attenuation intervals and shows that the grinding intensity decreases gradually, while the grinding intensity of the second grinding disc 20 which is an alloy disc decreases linearly because it wears slowly and has no self-sharpening effect. In this way, most of the data of the first grinding disc 10 received by the judging unit 41 in this embodiment will form a plurality of attenuation interval patterns as shown in FIG. The first grinding disc 10 being ground is judged abnormally; similarly, the judgment unit 41 receives most of the data of the second grinding disc 20 in this embodiment, and the benchmark will form a linear decline as shown in Figure 6 type, and based on the basic type, abnormality judgment is performed on the second grinding disc 20 being ground. In this way, it can be known whether abnormality occurs 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 it is selected to be connected to the first grinding disc 10 or the second grinding disc 20, since the first grinding disc 10 and the second grinding disc 20 are sandwiched between Hold the steel ball, so the signal received by the judgment unit 41 from the detector 30 is the frequency spectrum generated by the mutual coupling between the first grinding disc 10 and the second grinding disc 20, please refer to FIG. 7A. In this embodiment, the first grinding disc The grinding disc 10 is a rotating disc, and the second grinding disc 20 is a fixed disc that does not rotate. Therefore, when the damage occurs on the first grinding disc 10, the damaged part will follow the first grinding disc. 10 to rotate, and when the steel balls are ground between the first grinding disc 10 and the second grinding disc 20, because the initial conditions of the steel balls entering between the first grinding disc 10 and the second grinding disc 20 are different, there is no It will remain 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 three frequency states in different states. Please refer to Fig. 7B for the reason. , when the damaged position of the first grinding disc 10 completely overlaps with the steel ball, the resulting damage spectrum is stronger, so the spectrum of the damaged line segment A shown in Fig. 7A is stronger, when the damaged position of the first grinding disc 10 is between Between the corresponding steel ball and the corresponding non-steel ball, the generated damage spectrum is weaker than the spectrum of the damaged line segment A, such as the spectrum of the damaged line segment B shown in Figure 7A. Finally, when the damaged position of the first grinding disc 10 corresponds to In the position where there is no steel ball, the damage spectrum generated is the weakest, such as the spectrum of the damaged line segment C shown in Fig. 7A. When the damaged line spectrum as shown in FIG. 7A is generated, the judging unit 41 can judge that the damaged location is located in the first grinding disc 10 .

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

Finally, the judging unit 41 is more able to obtain the first grinding disc 10 or the second grinding disc 20 according to the difference in frequency, please refer to the following table 1:

Table I

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 produce different grinding grooves, and thus the damaged grinding grooves can be known according to the frequencies of different grinding grooves.

The present invention monitors the first grinding disc 10 and the second grinding disc 20 in real time through the judging unit 41, and compares the monitoring results 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 known in real time. Whether the grinding disc 20 is worn or not; moreover, the present invention records the time that 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 is constantly updated, so that the prediction results will become more accurate as the use time is prolonged; finally The judging unit 41 can judge the position of the damaged grinding groove according to the frequency difference, 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 it for inspection from time to time, which is convenient The corresponding damaged grinding groove can be directly deactivated, thereby improving the grinding efficiency.

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

Claims (5)

1. A health damage prediction system for a ball grinder, adapted for use with a first grinding plate and a second grinding plate of the ball grinder, the health damage prediction system comprising:

a detector connected to the first polishing disk and the second polishing disk;

the central processing module is provided with a judging unit, a historical data recording unit, a timing unit and an alarm unit, wherein the detector is in information connection with the judging unit, the detector detects that data from the beginning to the damage of the first grinding disc and the second grinding disc are transmitted to the judging unit, the judging unit compares the data according to the past records stored in the historical data recording unit to judge whether the first grinding disc and the second grinding disc are abnormal or not, if the data are abnormal, the judging unit drives the alarm unit to release alarm signals, if the data are not abnormal after the comparison according to the past records stored in the historical data recording unit, the timing unit records the grinding time of the first grinding disc and the second grinding disc, and after the comparison is carried out according to the past records stored in the historical data recording unit, the alarm unit is driven to release the alarm signals after a preset time.

2. The system of claim 1, wherein the number of the detectors is two, one of the detectors is connected to the first polishing disk, and the other detector is connected to the second polishing disk.

3. The system of claim 1, wherein the number of detectors is one and is selectively connected to one of the first grinding disk or the second grinding disk.

4. The system of claim 1, wherein the first grinding disk is a grinding wheel disk and the second grinding disk is an alloy disk.

5. The system of claim 1, wherein the first and second grinding discs have a plurality of grinding grooves, the frequency of each grinding groove detected by the detector is different, and the determining unit is used to distinguish the grinding grooves with different frequencies.

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