CN113894616A - Machining center spindle state monitoring system based on audio fluctuation - Google Patents
Machining center spindle state monitoring system based on audio fluctuation Download PDFInfo
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Abstract
The invention discloses a machining center spindle state monitoring system based on audio fluctuation, which comprises a workbench and a state monitoring system, both sides of the left end of the workbench are connected with a bracket in a sliding way, a first sliding rail is fixed in the middle of the bracket, one side of the first sliding rail is connected with a fixed plate in a sliding way, one side of the fixed plate is fixed with a second sliding rail, one side of the second sliding rail is connected with a sliding block in a sliding way, one side of the sliding block is fixed with a fixed block, a through hole is arranged inside the sliding block, a main shaft is arranged inside the through hole, four groups of grooves are uniformly formed inside the fixed block, three groups of telescopic rods are fixed inside the four groups of grooves, the state monitoring system comprises an acquisition module, a center module and a processing module.
Description
Technical Field
The invention relates to the technical field of machining centers, in particular to a machining center spindle state monitoring system based on audio fluctuation.
Background
When the spiral feeding is carried out at the center of a workpiece in the machining process, and the workpiece is diffused and machined around the two sides, the milling cutter is in contact with the workpiece and becomes thinner and thinner, so that the resistance is reduced greatly, the main shaft of the machining center can shake in the process, the size of a part to be machined is deviated, when the resistance is large, the main shaft shakes seriously, the machining quality is influenced, the existing machining center main shaft state monitoring system cannot recognize the shaking degree of the main shaft through the sound generated by the main shaft shaking, the existing machining center main shaft state monitoring system cannot automatically adjust the stability of the main shaft, and therefore, the design of the machining center main shaft state monitoring system which is strong in practicability and prevents the main shaft from shaking and is based on audio fluctuation is necessary.
Disclosure of Invention
The invention aims to provide a machining center spindle state monitoring system based on audio fluctuation, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: machining center main shaft state monitoring system based on audio frequency fluctuation, including making platform and state monitoring system, the equal sliding connection in left end both sides of workstation has the support, the centre of support is fixed with slide rail one, one side sliding connection of slide rail one has the fixed plate, one side of fixed plate is fixed with slide rail two, one side sliding connection of slide rail two has the slider, one side of slider is fixed with the fixed block, the through-hole has been seted up to the inside of slider, the inside of through-hole is provided with the main shaft, four groups of recesses have evenly been seted up to the inside of fixed block, four groups the inside of recess all is fixed with three telescopic links of group, the one end of telescopic link is fixed with the clamp plate, the clamp plate contacts with the main shaft.
According to the technical scheme, the state monitoring system comprises an acquisition module, a center module and a processing module, wherein the acquisition module comprises a sound acquisition submodule, a distance detection submodule and a time detection submodule, the center module comprises an analysis submodule and an alarm submodule, the analysis submodule comprises a volume identification unit and a frequency statistical unit, the distance detection submodule is positioned on one side of a pressing plate, the sound acquisition submodule is positioned inside a fixed block, and the distance detection submodule is electrically connected with the frequency identification unit;
the sound collection submodule is used for receiving the sound that main shaft collision fixed block sent, the distance detection submodule is used for detecting the distance of clamp plate and recess inner wall, the time detection submodule is used for detecting the time of main shaft shake, the analysis submodule is used for analyzing the degree of rocking of main shaft, volume identification element is used for receiving the sound that the sound collection submodule gathered to the height of discernment sound, frequency statistical unit is used for the number of times that the sound of statistics sound collection submodule sent, the warning submodule is used for reporting to the police, makes the main shaft stop the function.
According to the technical scheme, the acquisition module and the central module comprise the following operation steps:
a1, placing the workpiece on a workbench, and enabling a main shaft of a machining center to work to machine the workpiece;
a2, when the main shaft works, the main shaft is in contact with a workpiece, the main shaft can shake and generate sound, the sound is collected by the volume collection submodule and transmitted to the frequency statistics unit, and the frequency of main shaft shaking is counted;
a3, detecting the amplitude of the main shaft vibration through a distance detection submodule and transmitting a signal to an analysis submodule;
and A4, judging the shaking degree of the main shaft by combining the frequency and the amplitude of the main shaft shaking through the analysis submodule.
According to the technical scheme, the A2 comprises the following specific operation steps:
a21, when the main shaft shakes, the pressing plate is driven to push to the left and the right of two sides, so that the telescopic rod is pushed to extend back and forth;
a22, when the telescopic rod stretches, the distance between the pressing plate and the inner wall of the groove changes, and the distance between the pressing plate and the groove is detected through the distance detection submodule;
a23, transmitting the sound collected by the sound collection submodule to a volume recognition unit, wherein the sound is relatively stable because the machining center can generate sound when working, when the main shaft shakes, the main shaft collides with a fixed block, the generated sound is relatively high, the relatively high volume can be recognized by the volume recognition unit, and the frequency of sending the relatively high volume is counted by the frequency counting unit;
a24, when the volume identification unit identifies the higher volume sent by the main shaft, the signal is transmitted to the time detection submodule, and the time for detecting the main shaft shake is transmitted to the frequency statistical unit, so as to judge the main shaft shake frequency.
According to the above technical solution, in S24, the frequency calculation formula of the spindle wobble is as follows:
wherein P is the frequency of the main shaft shaking, C is the frequency of higher sound, namely the frequency of the main shaft shaking, T is the time of the main shaft shaking, the unit is second, P is divided into three grades, P is more than 0 and less than or equal to 30 and is slow, P is more than 30 and less than or equal to 70 and is neutral, and P is more than 70 and is fast.
According to the above technical solution, the calculation formula of the amplitude ratio of the main shaft jitter in a3 is as follows:
in the formula (I), the compound is shown in the specification,
the distance between the sub-module detection pressing plate and the groove is the average value of the distance between the sub-module detection pressing plate and the groove, n is the number of the sub-modules, liFor the distance detected by the distance detection module, LGeneral assemblyThe initial distance between the pressing plate and the groove is always, and L is the distance detected by the distance detection submodule and LGeneral assemblyI.e. the amplitude ratio of the spindle jitter.
According to the technical scheme, the A4 comprises the following specific operation steps:
a41, dividing L into two levels, namely dividing the jitter amplitude of the main shaft into two levels, wherein L is less than 40%, which represents that the jitter amplitude of the main shaft is low, and L is more than or equal to 40%, which represents that the jitter amplitude of the main shaft is high;
a42, when L is less than 40%, P is more than 0 and less than or equal to 30, the vibration amplitude of the main shaft is low, the vibration frequency of the main shaft is low, therefore, the vibration degree of the main shaft is proved to be in the allowable range, and the subsequent correction processing is not needed;
a43, when L is less than 40%, P is more than 30 and less than or equal to 70, the vibration amplitude of the main shaft is low, the vibration frequency of the main shaft is medium, when L is more than or equal to 40%, P is more than 0 and less than or equal to 30, the vibration amplitude of the main shaft is high, the vibration frequency of the main shaft is low, and therefore the vibration degree of the main shaft is low;
a44, when L is less than 40 percent and P is more than 70, the vibration amplitude of the main shaft is low, the vibration frequency of the main shaft is high, when L is more than or equal to 40 percent and P is more than 30 and less than or equal to 70, the vibration amplitude of the main shaft is high, the vibration frequency of the main shaft is medium, and therefore the vibration degree of the main shaft is proved to be medium;
a45, when L is larger than or equal to 40% and P is larger than 70%, the vibration amplitude of the main shaft is high, the vibration frequency of the main shaft is high, therefore, the vibration degree of the main shaft is high, at the moment, the signal is transmitted to the alarm submodule, and the alarm submodule gives an alarm to prompt.
According to the technical scheme, a plurality of telescopic bags are fixed inside the groove, a pipeline on one side of each telescopic bag is connected with an air source, a valve is connected at the joint of the telescopic bags and the air source, an air pump is connected at one end of the air source, a motor is arranged above the main shaft and fixedly connected with one side of the sliding block, and the main shaft is fixed with an output shaft of the motor.
According to the technical scheme, the processing module comprises a switch submodule, an adjusting submodule, an emergency stop submodule and a locking submodule, wherein valves of the switch submodule are electrically connected, the adjusting submodule is electrically connected with the air pump, the emergency stop submodule is electrically connected with the motor, and the locking submodule is electrically connected with the telescopic rod;
the switch submodule receives a signal of the analysis submodule and controls the valve to be opened, the adjusting submodule receives a signal of the analysis submodule and controls the air pump to be started, the emergency stop submodule is used for controlling the motor to stop rotating, and the telescopic rod is electrically connected with the locking submodule.
According to the technical scheme, the processing module comprises the following specific operation steps;
s1, when the main shaft shakes to a low level, the analysis submodule transmits a signal to the locking submodule, so that the locking submodule fixes the telescopic rod with small telescopic amplitude;
s2, when the shaking degree of the main shaft is in the middle level, the analysis submodule transmits a signal to the switch submodule, a valve of the telescopic bag corresponding to the telescopic rod with large telescopic amplitude is opened, and the signal is transmitted to the adjustment submodule to open the air pump, so that outside air is pumped into the telescopic bag corresponding to the telescopic rod with large telescopic amplitude;
s3, when the degree of shaking of the main shaft is changed from a middle level to a high level, the force for extruding the telescopic bag is increased, the telescopic bag is easily split, the air leakage of the telescopic bag is caused, the main shaft shakes more seriously at the moment, and the analysis submodule transmits a signal to the emergency stop submodule.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the alarm submodule is arranged to transmit the signal to the alarm submodule, and the alarm submodule gives an alarm to prompt so that the main shaft stops working, thereby avoiding the influence on the processing quality caused by the too-large shaking of the main shaft.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of a partial process of area A of the present invention;
FIG. 3 is a schematic view of a condition monitoring system of the present invention; (ii) a
In the figure: 1. a work table; 2. a support; 3. a first slide rail; 4. a slider; 5. a second slide rail; 6. a main shaft; 7. a fixed block; 8. a fixing plate; 9. a telescopic rod; 10. pressing a plate; 11. a groove; 12. a telescopic bag.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides the following technical solutions: a machining center spindle state monitoring system based on audio fluctuation comprises a workbench 1 and a state monitoring system, wherein two sides of the left end of the workbench 1 are respectively connected with a support 2 in a sliding manner, a first sliding rail 3 is fixed in the middle of the support 2, one side of the first sliding rail 3 is connected with a fixed plate 8 in a sliding manner, one side of the fixed plate 8 is fixed with a second sliding rail 5, one side of the second sliding rail 5 is connected with a sliding block 4 in a sliding manner, one side of the sliding block 4 is fixed with a fixed block 7, a through hole is formed in the sliding block 4, a spindle 6 is arranged in the through hole, four groups of grooves 11 are uniformly formed in the fixed block 7, three groups of telescopic rods 9 are respectively fixed in the four groups of grooves 11, one end of each telescopic rod 9 is fixed with a pressing plate 10, and the pressing plates 10 are contacted with the spindles, when the machining center works, the support 2 can slide on two sides of the workbench 1, so that the sliding rails 3 are driven to slide on the workbench, and the main shaft 6 can machine workpieces conveniently.
The state monitoring system comprises an acquisition module, a center module and a processing module, wherein the acquisition module comprises a sound acquisition submodule, a distance detection submodule and a time detection submodule, the center module comprises an analysis submodule and an alarm submodule, the analysis submodule comprises a volume identification unit and a frequency statistical unit, the distance detection submodule is positioned on one side of the pressing plate 10, the sound acquisition submodule is positioned inside the fixed block, and the distance detection submodule is electrically connected with the frequency identification unit;
the sound collection submodule is used for receiving the sound that main shaft 6 collided fixed block 7 and sent, the distance detection submodule is used for detecting the distance of clamp plate 10 and recess 11 inner wall, the time that the time detection submodule was used for detecting the shake of main shaft 6, the analysis submodule is used for analyzing the rocking degree of main shaft 6, the volume identification unit is used for receiving the sound that the sound collection submodule gathered, and the height of discernment sound, the frequency statistics unit is used for counting the number of times that the sound of sound collection submodule sent, the warning submodule is used for reporting to the police, make the main shaft stop the function.
The acquisition module and the pivot module comprise the following operation steps:
a1, placing the workpiece on the workbench 1, and enabling the main shaft 6 of the machining center to work to machine the workpiece;
a2, when the main shaft 6 works, the main shaft 6 is in contact with a workpiece, the main shaft 6 can shake and generate sound, the sound is collected by the volume collection submodule and transmitted to the frequency statistics unit, and the frequency of main shaft shaking is counted;
a3, detecting the shaking amplitude of the main shaft 6 through a distance detection submodule, and transmitting a signal to an analysis submodule;
and A4, judging the shaking degree of the main shaft 6 by combining the analysis submodule with the shaking frequency and amplitude of the main shaft 6.
4. The audio fluctuation based machining center spindle condition monitoring system according to claim 3, wherein: a2 comprises the following specific operation steps:
a21 and the main shaft 6 drive the pressing plate 10 to push left and right to both sides when shaking, thereby pushing the telescopic rod 9 to extend back and forth;
a22, when the telescopic rod 9 stretches, the distance between the pressing plate 10 and the inner wall of the groove 11 changes, and the distance between the pressing plate 10 and the groove 11 is detected through the distance detection submodule;
a23, transmitting the sound collected by the sound collection submodule to a volume recognition unit, wherein the sound is relatively stable because the machining center can generate sound when working, when the main shaft 6 shakes, the main shaft 6 collides with the fixed block 7, the generated sound is relatively high, the relatively high volume can be recognized by the volume recognition unit, and the frequency of sending the relatively high volume is counted by the frequency counting unit;
a24, when the volume identification unit identifies the higher volume sent by the spindle 6, the signal is transmitted to the time detection submodule, and the time for detecting the shaking of the spindle 6 is transmitted to the frequency statistical unit, so as to judge the shaking frequency of the spindle 6.
In S24, the frequency calculation formula of the spindle 6 wobble is:
wherein P is the frequency of the shaking of the main shaft 6, C is the frequency of higher sound, namely the frequency of shaking of the main shaft 6, T is the time of shaking of the main shaft 6, the unit is second, P is divided into three grades, P is more than 0 and less than or equal to 30, slow is, P is more than 30 and less than or equal to 70, and neutralization P is more than 70, fast.
The amplitude ratio of the main shaft 6 jitter in A3 is calculated as:
in the formula (I), the compound is shown in the specification,
the average value of the distance from the pressure plate 10 to the groove 11 is detected for the distance detection submodules, n is the number of the distance detection submodules, liFor the distance detected by the distance detection module, LGeneral assemblyThe initial distance between the pressing plate 10 and the groove 11 is always, and L is the distance detected by the distance detection submodule and LGeneral assemblyI.e. the amplitude ratio of the jitter of the spindle 6.
A4 comprises the following specific operation steps:
a41, dividing L into two levels, namely dividing the jitter amplitude of the spindle 6 into two levels, wherein L is less than 40%, which indicates that the jitter amplitude of the spindle 6 is low, and L is more than or equal to 40%, which indicates that the jitter amplitude of the spindle 6 is high;
a42, when L < 40%, P < 0 < 30, it means that the amplitude of the main shaft 6 is low and the frequency of the main shaft 6 is low, thus proving that the degree of the main shaft 6 is within the allowable range and does not need the subsequent correction processing;
a43, when L is less than 40%, P is more than 30 and less than or equal to 70, the vibration amplitude of the main shaft 6 is low, the vibration frequency of the main shaft 6 is medium, when L is more than or equal to 40%, P is more than 0 and less than or equal to 30, the vibration amplitude of the main shaft 6 is high, the vibration frequency of the main shaft 6 is low, therefore, the vibration degree of the main shaft 6 is low;
a44, when L is less than 40 percent and P is more than 70, the vibration amplitude of the main shaft 6 is low, the vibration frequency of the main shaft 6 is high, when L is more than or equal to 40 percent and P is more than 30 and less than or equal to 70, the vibration amplitude of the main shaft 6 is high, the vibration frequency of the main shaft 6 is medium, and therefore the vibration degree of the main shaft 6 is proved to be medium;
a45, when L is larger than or equal to 40%, and P is larger than 70, the vibration amplitude of the main shaft 6 is high, the vibration frequency of the main shaft 6 is high, therefore, the vibration degree of the main shaft is high, at the moment, a signal is transmitted to the alarm submodule, the main shaft 6 stops working through the alarm prompt of the alarm submodule, and the problem that the machining quality is influenced due to too much vibration of the main shaft 6 is avoided.
A plurality of telescopic bags 12 are fixed inside the groove 11, a pipeline on one side of each telescopic bag 12 is connected with an air source, a valve is connected at the joint of each telescopic bag 12 and the air source, one end of the air source is connected with an air pump, a motor is arranged above the main shaft 6 and is fixedly connected with one side of the sliding block 4, and the main shaft 6 is fixed with an output shaft of the motor.
The processing module comprises a switch submodule, an adjusting submodule, an emergency stop submodule and a locking submodule, wherein valves of the switch submodule are electrically connected, the adjusting submodule is electrically connected with the air pump, the emergency stop submodule is electrically connected with the motor, and the locking submodule is electrically connected with the telescopic rod 9;
the switch submodule receives a signal of the analysis submodule and controls the valve to be opened, the adjusting submodule receives a signal of the analysis submodule and controls the air pump to be opened, the emergency stop submodule is used for controlling the motor to stop rotating, and the telescopic rod 9 is electrically connected with the locking submodule.
The processing module comprises the following specific operation steps;
s1, when the shaking degree of the main shaft 6 is low, the analysis submodule transmits a signal to the locking submodule, so that the locking submodule fixes the telescopic rod 9 with small telescopic amplitude, the telescopic rod is fixed and does not stretch any more, and the main shaft 6 can have a slight fixing effect;
s2, when the shaking degree of the main shaft 6 is in the middle level, the analysis submodule transmits a signal to the switch submodule, a valve of the telescopic bag 12 corresponding to the telescopic rod 9 with large telescopic amplitude is opened, and the signal is also transmitted to the adjustment submodule, so that the air pump is opened, and outside air is pumped into the telescopic bag 12 corresponding to the telescopic rod 9 with large telescopic amplitude, and the distance detected by the distance detection submodule cannot be influenced because the initial state of the telescopic bag 12 is flat, and when the air enters the telescopic bag 12, the air is expanded and can abut against the telescopic rod 9, so that the main shaft 6 is prevented from shaking more seriously, and the stabilizing effect of the main shaft 6 is further increased;
s3, when the degree that main shaft 6 rocked is changed from the middle level to the high level, the dynamics of extruding expansion capsule 12 becomes large, which makes expansion capsule 12 split easily, makes expansion capsule 12 leak gas, and main shaft 6 rocks more seriously at this moment, and the analysis submodule transmits the signal to the scram submodule, controls the motor to stop rotating, stops the work of main shaft 6, and is convenient for the staff to repair main shaft 6.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Machining center main shaft state monitoring system based on audio frequency is undulant, including workstation (1) and state monitoring system, its characterized in that: the equal sliding connection in left end both sides of workstation (1) has support (2), the centre of support (2) is fixed with slide rail (3), one side sliding connection of slide rail (3) has fixed plate (8), one side of fixed plate (8) is fixed with slide rail two (5), one side sliding connection of slide rail two (5) has slider (4), one side of slider (4) is fixed with fixed block (7), the through-hole has been seted up to the inside of slider (4), the inside of through-hole is provided with main shaft (6), there is four group's recess (11), four group's recess (11) inside all is fixed with three telescopic link (9) of group, the one end of telescopic link (9) is fixed with clamp plate (10), clamp plate (10) contact with the main shaft.
2. The system for monitoring the condition of a spindle of a machining center based on audio fluctuation according to claim 1, wherein: the state monitoring system comprises an acquisition module, a center module and a processing module, wherein the acquisition module comprises a sound acquisition submodule, a distance detection submodule and a time detection submodule, the center module comprises an analysis submodule and an alarm submodule, the analysis submodule comprises a volume identification unit and a frequency statistical unit, the distance detection submodule is positioned on one side of a pressing plate (10), the sound acquisition submodule is positioned inside a fixed block, and the distance detection submodule is electrically connected with the frequency identification unit;
the sound that the submodule was gathered in the sound is used for receiving main shaft (6) collision fixed block (7) and sends, the distance detects the distance that the submodule is used for detecting clamp plate (10) and recess (11) inner wall, the time detects the time that the submodule is used for detecting main shaft (6) shake, the analysis submodule piece is used for the degree of rocking of analysis main shaft (6), volume identification unit is used for receiving the sound that the submodule was gathered in the sound to the height of discernment sound, frequency statistics unit is used for counting the number of times that the sound of sound collection submodule sent, the warning submodule is used for reporting to the police, makes the main shaft stop the function.
3. The audio fluctuation based machining center spindle condition monitoring system of claim 2, wherein: the acquisition module and the central module comprise the following operation steps:
a1, placing the workpiece on a workbench (1), and enabling a main shaft (6) of a machining center to work to machine the workpiece;
a2, when the main shaft (6) works, the main shaft (6) is in contact with a workpiece, the main shaft (6) can shake and generate sound, the sound is collected by the volume collection submodule and transmitted to the frequency statistics unit, and the frequency of main shaft shaking is counted;
a3, detecting the shaking amplitude of the main shaft (6) through a distance detection submodule and transmitting a signal to an analysis submodule;
and A4, judging the shaking degree of the main shaft (6) by combining the analysis submodule with the shaking frequency and amplitude of the main shaft (6).
4. The audio fluctuation based machining center spindle condition monitoring system of claim 3, wherein: the A2 comprises the following specific operation steps:
a21, when the main shaft (6) shakes, the pressing plate (10) is driven to push to the left and the right of two sides, so that the telescopic rod (9) is pushed to extend back and forth;
a22, when the telescopic rod (9) stretches, the distance between the pressing plate (10) and the inner wall of the groove (11) changes, and the distance between the pressing plate (10) and the groove (11) is detected through the distance detection submodule;
a23, transmitting the sound collected by the sound collection submodule to a volume recognition unit, wherein the sound is relatively stable because the machining center can generate sound when working, when the main shaft (6) shakes, the main shaft (6) collides with the fixed block (7), the generated sound is relatively high, the relatively high volume can be recognized by the volume recognition unit, and the frequency of sending the relatively high volume is counted by the frequency counting unit;
a24, when the volume identification unit identifies the higher volume sent by the main shaft (6), the signal is transmitted to the time detection submodule, and the time for detecting the shaking of the main shaft (6) is transmitted to the frequency statistical unit, so as to judge the shaking frequency of the main shaft (6).
5. The audio fluctuation based machining center spindle condition monitoring system of claim 4, wherein: in S24, the frequency calculation formula of the spindle (6) jitter is:
wherein P is the shaking frequency of the main shaft (6), C is the higher sound frequency, namely the shaking frequency of the main shaft (6), T is the shaking time of the main shaft (6), the unit is second, P is divided into three grades, P is slow when being more than 0 and less than or equal to 30, P is more than 30 and less than or equal to 70, and neutralization P is more than 70.
6. The audio fluctuation based machining center spindle condition monitoring system of claim 5, wherein: the calculation formula of the amplitude ratio of the jitter of the main shaft (6) in the A3 is as follows:
in the formula (I), the compound is shown in the specification,
the distance between a sub-module detection pressing plate (10) for distance detection and a groove (11) is averaged, n is the number of the sub-modules for distance detection, liFor the distance detected by the distance detection module, LGeneral assemblyThe initial distance between the pressing plate (10) and the groove (11) is always, and L is the distance detected by the distance detection submodule and LGeneral assemblyI.e. the amplitude ratio of the spindle (6) jitter.
7. The audio fluctuation based machining center spindle condition monitoring system of claim 6, wherein: the A4 comprises the following specific operation steps:
a41, dividing L into two levels, namely dividing the jitter amplitude of the main shaft (6) into two levels, wherein L is less than 40%, which means that the jitter amplitude of the main shaft (6) is low, and L is more than or equal to 40%, which means that the jitter amplitude of the main shaft (6) is high;
a42, when L < 40%, P < 0 < 30, it means that the amplitude of the spindle (6) wobble is low and the frequency of the spindle (6) wobble is low, thus proving that the degree of the spindle (6) wobble is within the allowable range without subsequent correction processing;
a43, when L is less than 40 percent and P is more than 30 and less than or equal to 70, the amplitude of the shaking of the main shaft (6) is low, the frequency of the shaking of the main shaft (6) is medium, when L is more than or equal to 40 percent and P is more than or equal to 30, the amplitude of the shaking of the main shaft (6) is high, and the frequency of the shaking of the main shaft (6) is low, so the degree of the shaking of the main shaft (6) is proved to be low;
a44, when L is less than 40 percent and P is more than 70, the vibration amplitude of the main shaft (6) is low, the vibration frequency of the main shaft (6) is high, when L is more than or equal to 40 percent and P is more than 30 and less than or equal to 70, the vibration amplitude of the main shaft (6) is high, the vibration frequency of the main shaft (6) is medium, and therefore the vibration degree of the main shaft (6) is proved to be medium;
a45, when L is larger than or equal to 40% and P is larger than 70, the vibration amplitude of the main shaft (6) is high, the vibration frequency of the main shaft (6) is high, therefore, the vibration degree of the main shaft is high, at the moment, a signal is transmitted to the alarm submodule, and the alarm submodule gives an alarm.
8. The audio fluctuation based machining center spindle condition monitoring system of claim 7, wherein: the inside of recess (11) is fixed with a plurality of flexible bags (12), one side pipe connection of flexible bag (12) has the air supply, the pipe connection department of flexible bag (12) and air supply is connected with the valve, the one end of air supply is connected with the air pump, the top of main shaft (6) is provided with the motor, the motor is fixed connection with one side of slider (4), main shaft (6) are fixed with the output shaft of motor.
9. The audio fluctuation based machining center spindle condition monitoring system of claim 8, wherein: the processing module comprises a switch submodule, an adjusting submodule, an emergency stop submodule and a locking submodule, wherein valves of the switch submodule are electrically connected, the adjusting submodule is electrically connected with the air pump, the emergency stop submodule is electrically connected with the motor, and the locking submodule is electrically connected with the telescopic rod (9);
the switch submodule receives a signal of the analysis submodule and controls the valve to be opened, the adjusting submodule receives a signal of the analysis submodule and controls the air pump to be started, the emergency stop submodule is used for controlling the motor to stop rotating, and the telescopic rod (9) is electrically connected with the locking submodule.
10. The audio fluctuation based machining center spindle condition monitoring system of claim 9, wherein: the processing module comprises the following specific operation steps;
s1, when the shaking degree of the main shaft (6) is low, the analysis submodule transmits a signal to the locking submodule, so that the locking submodule fixes the telescopic rod (9) with small telescopic amplitude;
s2, when the shaking degree of the main shaft (6) is in the middle level, the analysis submodule transmits a signal to the switch submodule, a valve of the telescopic bag (12) corresponding to the telescopic rod (9) with large telescopic amplitude is opened, and the signal is also transmitted to the adjustment submodule, so that the air pump is opened, and external air is pumped into the telescopic bag (12) corresponding to the telescopic rod (9) with large telescopic amplitude, and the distance detected by the distance detection submodule cannot be influenced because the telescopic bag (12) is flat in the initial state, and the air is expanded when entering the telescopic bag (12);
s3, when the shaking degree of the main shaft (6) is changed from a middle level to a high level, the force for extruding the telescopic bag (12) is increased, the telescopic bag (12) is easily split, the telescopic bag (12) leaks air, the main shaft (6) shakes more, and the analysis submodule transmits a signal to the emergency stop submodule.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559282A (en) * | 2022-04-02 | 2022-05-31 | 刘建 | Numerical control machine tool capable of automatically changing tools based on big data |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6357565B1 (en) * | 1998-11-27 | 2002-03-19 | Machining Centers Manufacturing S.P.A. | Shock-absorbing device for spindle headstocks |
| US20040052601A1 (en) * | 2002-09-13 | 2004-03-18 | Maschinenfabrik Berthold Hermle Ag | Spindle head for a machine tool |
| JP2005096002A (en) * | 2003-09-22 | 2005-04-14 | Toyoda Mach Works Ltd | Rotary shaft headstock module device and rotary shaft headstock |
| CN2790669Y (en) * | 2003-03-13 | 2006-06-28 | Jobs股份公司 | A device for checking the position of a spindle in a machine tool |
| US20090018001A1 (en) * | 2007-07-12 | 2009-01-15 | Ludwig Jakob | Protection device for a motor spindle |
| US20120004760A1 (en) * | 2010-07-02 | 2012-01-05 | Ott-Jakob Spanntechnik Gmbh | Device for Protecting a Work Spindle |
| CN209707102U (en) * | 2019-05-27 | 2019-11-29 | 杨薪冉 | Spindle test stand frame |
| CN211824709U (en) * | 2020-05-20 | 2020-10-30 | 无锡华庄电机有限公司 | Vibration detection device for three-phase asynchronous motor |
-
2021
- 2021-11-16 CN CN202111352882.4A patent/CN113894616A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6357565B1 (en) * | 1998-11-27 | 2002-03-19 | Machining Centers Manufacturing S.P.A. | Shock-absorbing device for spindle headstocks |
| US20040052601A1 (en) * | 2002-09-13 | 2004-03-18 | Maschinenfabrik Berthold Hermle Ag | Spindle head for a machine tool |
| CN2790669Y (en) * | 2003-03-13 | 2006-06-28 | Jobs股份公司 | A device for checking the position of a spindle in a machine tool |
| JP2005096002A (en) * | 2003-09-22 | 2005-04-14 | Toyoda Mach Works Ltd | Rotary shaft headstock module device and rotary shaft headstock |
| US20090018001A1 (en) * | 2007-07-12 | 2009-01-15 | Ludwig Jakob | Protection device for a motor spindle |
| US20120004760A1 (en) * | 2010-07-02 | 2012-01-05 | Ott-Jakob Spanntechnik Gmbh | Device for Protecting a Work Spindle |
| CN209707102U (en) * | 2019-05-27 | 2019-11-29 | 杨薪冉 | Spindle test stand frame |
| CN211824709U (en) * | 2020-05-20 | 2020-10-30 | 无锡华庄电机有限公司 | Vibration detection device for three-phase asynchronous motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559282A (en) * | 2022-04-02 | 2022-05-31 | 刘建 | Numerical control machine tool capable of automatically changing tools based on big data |
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Application publication date: 20220107 |