CN115655182A - Device for detecting size and contour of inner bearing of magnetic suspension high-speed fan - Google Patents
Device for detecting size and contour of inner bearing of magnetic suspension high-speed fan Download PDFInfo
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- CN115655182A CN115655182A CN202211419638.XA CN202211419638A CN115655182A CN 115655182 A CN115655182 A CN 115655182A CN 202211419638 A CN202211419638 A CN 202211419638A CN 115655182 A CN115655182 A CN 115655182A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a device for detecting the size and contour of a bearing in a magnetic suspension high-speed fan, and mainly relates to the field of measurement of the inner diameter of the bearing. The device comprises a fixing module, a deviation rectifying module and a detecting module; the fixing module is configured for limiting and fixing relative to the fan to be tested; the deviation correcting module comprises a square alignment frame, and the alignment frame is configured to obtain an alignment surface parallel to the installation end surface of the magnetic suspension bearing on the outer side of the fan to be detected; the detection module comprises a positioning sliding table capable of realizing two-dimensional position positioning based on a counterpoint face, a detection table is fixed on the positioning sliding table, a probe rod in linear sliding fit with the detection table is arranged on the detection table, and four probes are rotationally distributed at the inner end of the probe rod. The invention has the beneficial effects that: the inside of the bearing in the magnetic suspension fan can be measured, so that defects or related problems can be reflected in time.
Description
Technical Field
The invention relates to the field of bearing inner diameter measurement, in particular to a device for detecting the size and contour of a bearing in a magnetic suspension high-speed fan.
Background
In the fan, the impeller rotating at high speed along with the rotor shaft drives air to realize directional work on the air. The gas delivery with certain pressure and flow is realized. At present, a fan mostly adopts a mechanical bearing, mechanical friction is generated between a main shaft of the fan and the bearing, the motor can drive the fan blades to rotate only by overcoming the friction, and meanwhile, the motor generates heat to generate vibration with larger amplitude, so that the service life of the fan is shortened. In high-speed fan equipment, the magnetic suspension bearing is adopted to load the rotation of the rotor shaft, based on the magnetic suspension bearing, the high-speed rotation without abrasion and lubrication is realized, mechanical friction does not exist between the stator and the rotor, the running resistance of the magnetic suspension bearing is zero, and heat can not be generated, so that a cooling system and a lubricating system are omitted, the volume and weight are reduced, the reliability and the service life are improved, the mechanical noise is greatly reduced during suspension running, the mechanical vibration is also greatly reduced, the vibration amplitude is far smaller than that of a common fan, and the stability of the whole fan is improved.
The magnetic suspension bearing is used as a core of the fan, namely a bearing component of a rotor shaft, and plays a decisive key role in the operation and stability of the device. In specific applications, the precision of installation and use of the fan is of great importance to the operation of the fan.
Disclosure of Invention
The invention aims to provide a device for detecting the size contour of an inner bearing of a magnetic suspension high-speed fan, which can measure the inner part of the inner bearing of the magnetic suspension fan so as to reflect defects or related problems in time.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a device for detecting the size and contour of a bearing in a magnetic suspension high-speed fan comprises a fixing module, a deviation rectifying module and a detecting module;
the fixing module is configured to limit and fix relative to the fan to be tested;
the deviation rectifying module comprises a square alignment frame, and the alignment frame is configured to obtain an alignment surface parallel to the installation end surface of the magnetic suspension bearing outside the fan to be tested;
the detection module comprises a positioning sliding table capable of realizing two-dimensional position positioning based on a counterpoint face, a detection table is fixed on the positioning sliding table, a probe rod in linear sliding fit with the detection table is arranged on the detection table, the stroke direction of the probe rod is perpendicular to the positioning face, one end, close to the fixing module, of the probe rod is provided with a rotating seat in rotating fit with the probe rod, four probes are distributed on the rotating seat in a cross manner, the probes obtain distance data d1, d2, d3 and d4, and the distance data of the probes are fed back and positioned until the reversed direction is consistent based on the position of the positioning sliding table.
Detection module realizes the control to location slip table two dimension plane position based on biax mechanism, including X axle stroke mechanism and Y axle stroke mechanism, X axle stroke mechanism output have with counterpoint the translation slider of frame upper and lower side parallel stroke, Y axle stroke mechanism installs on translation slider, Y axle stroke mechanism's stroke direction is parallel with the side of controlling of counterpointing the frame, the location slip table passes through Y axle stroke mechanism output stroke.
Detect the bench and be equipped with the slide, the probe rod runs through in the slide and rather than sliding fit, the probe rod cross-section is equipped with the guide way that extends along its length direction for circular and one side of being close to detecting the platform, the tank bottom of guide way is equipped with the rack, detect rotatable the installing based on motor drive's drive gear on the bench, drive gear and rack toothing.
The rotary seat is rotatably provided with a pinion driven by a motor, one end of the probe rod close to the rotary seat is fixed with a gear ring coaxial with the probe rod, the pinion is meshed with the gear ring, and the rotary seat is driven to rotate at the front end of the probe rod and coaxially relative to the probe rod.
And screening the acquired distance data, including setting an upper limit difference threshold, wherein the upper limit difference threshold is used for judging the diameters of d1 and d3 reactions and/or the diameter data of d2 and d4 reactions and the corresponding inner diameter difference of the magnetic suspension bearing to be detected, discarding the data of which the difference is larger than the threshold, and increasing the times of one rotation and data acquisition.
The four-corner end positions of the alignment frame are respectively provided with a fixed seat fixedly mounted with the alignment frame, a mounting plate extending perpendicularly outwards from the fixed seat is fixed on a connecting plate of the fixed seat, a mounting hole is formed in the mounting plate, a ball seat fixedly mounted with a bolt piece is arranged on the mounting plate, a spherical cavity penetrates through the center of the ball seat, a spherical piece is matched in the spherical cavity in a rolling manner, an adjusting screw is fixed in the spherical piece in a penetrating manner, an adjusting screw is matched with the adjusting screw in a penetrating manner, and two ends of the adjusting screw are rotatably mounted on the fixing module through a bearing piece;
the fixed seat is provided with a distance sensor, the distance sensor emits a light beam forwards, and the direction of the light beam is perpendicular to the alignment frame.
The fixing module comprises a ferrule, the ferrule is sleeved outside the fan shell, at least 2 convex seats are circumferentially arranged on the ferrule, a threaded sleeve penetrates through the center of each convex seat, and a puller bolt penetrates through the threaded sleeve in a matched manner;
the ferrule bilateral symmetry is provided with mounting brackets, the extending direction of the mounting brackets is consistent with the radial direction of the ferrule, a front support frame and a rear support frame are fixed on the mounting brackets, the inner end of the front support frame is a front mounting position, the inner end of the rear support frame is a rear mounting position, and two ends of the adjusting screw rod are respectively mounted on the front mounting position and the rear mounting position.
The inner side end face of the convex seat is provided with a containing groove, the inner end of the puller bolt is provided with a pressing block, the inner side end face of the pressing block is provided with a rubber pad, the area is increased, the rubber pad is additionally arranged, and the size of the pressing block is smaller than the cross section of the containing groove.
The fixing base comprises a connecting plate, the connecting plate extends forwards and backwards, baffles are arranged at two ends of the connecting plate, 1-4 clamping plates are arranged on the end faces of the connecting plate adjacent to the alignment frame, the clamping plates and the baffle are vertically arranged relative to the connecting plate, a right-angle clamping groove is formed in one side, away from the connecting plate, of each clamping plate, the right-angle clamping groove is matched with the corner end of the alignment frame in a matched mode, the baffles are located on the end face of the outer side of the alignment frame, and installation of the alignment frame is achieved through bolts.
Compared with the prior art, the invention has the beneficial effects that:
the magnetic suspension fan is matched and measured before the rotor shaft is installed or after the rotor shaft is removed, the telescopic direction of the probe rod is calibrated through the correspondence with the installation end face of the magnetic suspension bearing exposed on the outermost side, and meanwhile, the automatic shaft is used for calibrating the probe rod, so that accurate data can be obtained in the subsequent measurement of the inner diameter, and the judgment of the inner peripheral surface and the integral condition of the bearing is assisted. Meanwhile, when the device is aligned, mechanical compression cannot be caused on the inner diameter of the bearing, and adverse effects on a working surface in the bearing are avoided.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 is a side schematic view of the present invention.
Fig. 3 is a schematic assembly disassembly diagram of the present invention.
FIG. 4 is a schematic diagram of a deskew module and a detection module according to the present invention.
FIG. 5 is a schematic view of the fixing base and the adjusting screw of the present invention.
FIG. 6 is a schematic view of the fixing base and the adjusting screw of the present invention.
Fig. 7 is a schematic view of a rotating seat portion of the present invention.
Figure 8 is a schematic view of a rotating shoe portion of the present invention.
Reference numerals shown in the drawings:
1. a ferrule; 2. a boss; 3. jacking the bolt; 4. accommodating grooves; 5. briquetting; 6. a mounting frame; 7. a front support frame; 8. a rear support frame; 9. a front mounting position; 10. a rear mounting position; 11. aligning the frame; 12. a fixed seat; 13. a baffle plate; 14. a clamping plate; 15. mounting a plate; 16. mounting holes; 17. a ball cup seat; 18. a spherical member; 19. adjusting the lead screw; 20. a distance sensor; 21. positioning the sliding table; 22. an X-axis polish rod guide rail; 23. an X-axis lead screw; 24. a translation slide block; 25. y-axis polished rod guide rails; 26. a drive belt; 27. a detection table; 28. a slide base; 29. a probe rod; 30. a guide groove; 31. a drive gear; 32. a rotating seat; 33. a pinion gear; 34. a ring gear; 35. a probe.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.
Example (b): device for detecting size and contour of inner bearing of magnetic suspension high-speed fan
Structurally, the magnetic suspension fan comprises a rotor shaft, and a radial magnetic suspension bearing, an axial magnetic suspension bearing, a motor, a necessary position sensor and the like are respectively arranged in a shell aiming at the installation and the rotation of the rotor shaft. And a volute is arranged at one end of the shell, an impeller is arranged at one end of the rotor shaft, and the directional control of the airflow is realized through the matching of the impeller and the volute.
Because the bearings at the two ends of the rotor shaft are the key for the high-speed and stable operation of the rotor shaft, before the rotor shaft is installed, whether two pairs of radial bearings and axial bearings are coaxial or not needs to be confirmed, and meanwhile, the inner diameter profile needs to be checked finally, and the last step is closed. During the operation of the fan, the long-term operation of the fan, the influence of external factors and the like can also cause various damages and changes to a bearing assembly, namely a bearing, and the damages and the changes comprise mechanical corrosion, electric corrosion, plastic deformation and the like. The influences of various damages on the bearing comprise regular grooves, rusty spots and pits generated on the surface, and deformation and micro-deviation of the whole shape, the conditions are difficult to find in regular routing inspection, the abnormal vibration and the abnormal sound are usually judged to exist in the rotation through sound, the abnormal vibration and the abnormal sound are exposed, the influence on the operation of equipment is caused, and the opportunity of timely intervention and adjustment is delayed.
Many problems can be found by measuring the center and radius/diameter of the interior of the bearing. For example, the deformation may cause the diameters of different angles to be different, or the axes of the front and rear bearings do not correspond, and the problems of pits and surfaces may also cause the diameter data to be changed. Therefore, the measuring device is mainly used for exposing problems by positioning the center of the mounting peripheral surface in the bearing and measuring radius/diameter data.
The main structure of the device comprises: the device comprises a fixing module, a deviation rectifying module and a detecting module;
the fixing module is used for clamping and fixing the device outside the fan, the fixing module is fixed with the shell of the fan, the whole device is supported, the relative positioning between the fixing module and the fan is static, and subsequent detection work is facilitated. Simultaneously, select to fix with fan casing, avoided the influence to the inside circumference terminal surface of bearing, any centre gripping is fixed all has great holding power, probably produces adverse effect to the bearing.
The design and machining precision of the housing is not high, so that accurate positioning is difficult to obtain through matching with the housing, and for example, the peripheral surface, the radial curved surface and the like of the housing cannot be used as a basis for calibration. The event realizes the relative positioning with the bearing through the module of rectifying, based on the existence of the module of rectifying, fixed module adopts succinct fixed mode, and this example adopts the fixed structure of screw rod centre gripping, specifically is:
the fixing module comprises a ferrule 1, the ferrule 1 is sleeved outside the fan shell, 5 convex seats 2 are circumferentially arranged on the ferrule 1, the convex seats 2 are rectangular bases protruding outwards along the radial direction of the ferrule 1, threaded sleeves penetrate through the convex seats 2 in the middle, jacking bolts 3 penetrate through the threaded sleeves in a matched mode, the inner ends of the large bolts abut against the outside of the fan shell, and clamping and fixing of the fan are achieved. The plurality of bolts can have a reliable fixing effect.
Be equipped with holding tank 4 on the inboard terminal surface of convex seat 2, the inner of puller bolt 3 is equipped with briquetting 5, the inboard terminal surface of briquetting 5 is equipped with the rubber pad, through increase area and increase rubber pad, improves fixed effect and reduces the influence to the shell. The size of briquetting 5 is less than holding tank 4's cross-section, is convenient for retract in holding tank 4.
The ferrule 1 is bilaterally symmetrically provided with mounting frames 6, the extending direction of the mounting frames 6 is consistent with the radial direction of the ferrule 1, and the mounting frames 6 are 4 and are arranged in pairs at the left and right sides.
The correcting device is characterized in that a front support frame 7 and a rear support frame 8 are fixed on the mounting frame 6, the front support frame 8 and the rear support frame 8 are rod frames extending inwards relatively, the front support frame 7 is close to the ferrule 1, the rear support frame 8 is far away from the ferrule 1 and is used for providing a mounting position for a correcting module, the inner end of the front support frame 7 is a front mounting position 9, and the inner end of the rear support frame 8 is a rear mounting position 10.
The deviation rectifying module is mainly used for aligning the magnetic suspension bearing at the outer end in the radial direction, so that the subsequent detection assembly stretches into the magnetic suspension bearing and corresponds to the outer end bearing in the radial direction.
The correction module comprises an alignment frame 11, the alignment frame 11 is of a rectangular frame structure, the alignment frame 11 is an aluminum profile assembly frame with a front layer and a rear layer, and the correction module is obtained by fixedly installing two square aluminum profile frames in parallel front and rear to provide an installation position for the detection module;
Be fixed with on the connecting plate of fixing base 12 rather than the perpendicular outside mounting panel 15 that extends, mounting panel 15 is gone up the centering and is equipped with mounting hole 16, ball headstock 17 through bolt spare fixed mounting on the mounting panel 15, ball headstock 17 is gone up centering and is run through spherical chamber, spherical intracavity roll fit has spherical 18, it is fixed with the regulation screw to run through in spherical 18, the regulation screw runs through the cooperation and has adjusts lead screw 19, adjust the both ends of lead screw 19 and pass through bearing spare rotation and install in the front on installation position 9 and back installation position 10, the rear end of back installation position 10 is fixed with the adjusting motor that the drive adjusted lead screw 19.
The front end that fixing base 12 is close to lasso 1 is equipped with distance sensor 20, distance sensor 20 sends the light beam forward for carry out the distance detection to the mounting end face of the bearing that exposes in the outside of motor casing one end, thereby obtain the distance data of this position and magnetic suspension bearing outer end terminal surface, acquire the size of apart from the position on four fixing bases 12, carry out feedback control to the rotation of lead screw, when distance data on four fixing bases 12 is unanimous, counterpoint frame 11 can keep the parallel with magnetic suspension bearing outside mounting end face, thereby obtain the counterpoint face parallel with the suspension bearing mounting end face that is located the outside, accomplish the counterpoint adjustment.
The detection module is mounted on the alignment frame 11. The method specifically comprises the following steps:
the detection module includes the biax stroke that X axle stroke mechanism and Y axle stroke mechanism constitute, the stroke of X axle stroke mechanism and Y axle stroke mechanism is perpendicular, just the stroke of X axle forming mechanism is parallel with the upper and lower side of counterpoint frame 11, the stroke of Y axle stroke mechanism is parallel with the side about counterpoint frame 11, and the stroke output based on these two directions has location slip table 21, makes location slip table 21 can be on the counterpoint face of counterpointing that frame 11 rectified through above-mentioned stroke.
The X-axis stroke mechanisms are driven by a lead screw, the two X-axis stroke mechanisms are respectively arranged on the upper side and the lower side of the alignment frame 11, and the stroke direction of the X-axis stroke mechanisms is parallel to the length of the upper side and the lower side of the alignment frame 11. The X-axis stroke mechanism comprises two X-axis light bar guide rails 22 arranged in parallel and an X-axis lead screw 23 arranged between the two X-axis light bar guide rails 22 in parallel, two ends of the X-axis light bar guide rails 22 are fixedly installed on the alignment frame 11 relatively, and two ends of the X-axis lead screw 23 are rotatably installed on the alignment frame 11 respectively and driven by a motor.
The X-axis light bar guide rail 22 is matched with a translation sliding block 24 in a sliding mode, the X-axis lead screw 23 is matched with a translation nut, and the translation nut is fixed on the translation sliding block 24 to achieve control over the left-right sliding of the translation sliding block 24.
The Y-axis stroke mechanism is arranged on the upper and lower translation sliders 24.
Y axle stroke mechanism adopts belt drive, Y axle stroke mechanism includes 2 along counterpoint frame 11 about side parallel arrangement's Y axle polished rod guide rail 25 to and be located the driving belt 26 between two Y axle polished rod guide rails 25, Y axle polished rod guide rail 25's both ends are fixed mounting respectively on two translation sliders 24 from top to bottom, sliding fit has location slip table 21 on Y axle polished rod guide rail 25, still install the belt pulley on the translation slider 24, the belt pulley is based on motor drive, driving belt 26 is for returning the type winding on two upper and lower belt pulleys, it fixes on location slip table 21 to return the type belt.
The installation is fixed with on the location slip table 21 and detects platform 27, it is equipped with slide 28 on the platform 27 to detect, run through in the slide 28 with its sliding fit's cylindrical probe rod 29, the slip direction of probe rod 29 is perpendicular with the counterpoint face after the location of rectifying module, also can be with the radial unanimity that is located the magnetic suspension bearing in the outside.
One side that probe 29 is close to detecting platform 27 is equipped with the guide way 30 that extends along its length direction, the tank bottom of guide way 30 is equipped with the rack, detect rotatable installation on the platform 27 and be based on motor drive's drive gear 31, drive gear 31 and rack toothing. The extension and contraction of the probe 29 is controlled by the drive gear 31.
The rotatable seat 32 of installing of one end of probe 29 near the lasso 1, the upright cross-section of seat 32 of rotating is the square, is convenient for realize the circumference installation of probe 35, the rotatable pinion 33 based on motor drive of installing on the seat 32 of rotating, the one end that probe 29 is close to seat 32 of rotating is fixed with rather than coaxial ring gear 34, pinion 33 and ring gear 34 mesh realize rotating the drive of seat 32 and rotate for seat 32 rotates the coaxial rotation of probe 29 in probe 29 front end. 4 probes 35 are arranged on the rotating seat 32 in an annular array, the probes 35 are infrared laser ranging sensors, and the emitting directions of the probes 35 correspond to the radial direction of the probe 29, so that the distance from the axis position of the probe 29 to the circumferential surface of the inner ring of the bearing at the position can be obtained, and the distance data obtained by the four probes 35 sequentially are d1, d2, d3 and d4; based on the cross distribution of the four probes 35, the sum of the distance data of d1 and d3 should correspond to the inner diameter of the bearing, the sum of the distance data of d2 and d4 should correspond to the inner diameter, and the position of the probe 29 is feedback-adjusted by the four distance data until d1= d3 and d2= d4, so that the probe 29 can be preliminarily determined to be coaxial with the magnetic suspension bearing.
After the probe 29 is kept coaxial with the outermost magnetic bearing, the distance data d1, d2, d3, d4 should be corresponding to the radius in the bearing, and the distance data of the multiple sets of probes 35 should be detected by rotating, so that the detection result of the inner contour can be directly obtained, and the deformation condition can be judged. Meanwhile, when one of the data d1 and d3, or one of the data d2 or d4 does not correspond to the other data, it is possible that a pit exists at the position.
If the circumferential installation surface of the inner ring of the magnetic suspension bearing is discontinuous, the probes 35 may hit the coil or the gap of the coil, and the situation can be corrected by repeatedly acquiring and comparing reverse distance data for many times, because the arrangement of the radial magnetic suspension bearing on the coil may be symmetrical or asymmetrical, and 4 probes 35 are reversely distributed in a cross shape, it is suggested that the distance data can be acquired at least twice, and the radial magnetic suspension bearing rotates for a certain angle after each acquisition, for example, under the condition of 4 times of acquisition, the radial magnetic suspension bearing rotates for 15 degrees after the first acquisition, and the feedback is acquired for the second time; and rotating the rotary table for 30 degrees again to collect feedback for the third time, and rotating the rotary table for 15 degrees again to collect feedback for the fourth time. And finishing feedback adjustment.
The coaxial positioning of the feeler lever 29 is obtained by rotating the non-repeated acquisition angle and the asymmetric angle setting in combination with the multiple acquisition feedback automatic correction.
In addition, the operation steps can be simplified by loading control variables, for example, an upper limit difference threshold value can be set, the measured diameter data is compared with the inner diameter data corresponding to the bearing to be measured, the maximum allowable difference value of the comparison result is set as the upper limit difference threshold value, the diameters reflected by d1 and d3 or the diameters reflected by d2 and d4 and the inner diameter data corresponding to the magnetic suspension bearing to be measured exceed the threshold value, and one rotation and data acquisition times are increased.
The probe rod 29 is extended inwards continuously, the circumferential surfaces of the inner rings of the magnetic suspension bearings are detected one by one, and besides the distance data d1, d2, d3 and d4 are obtained and recorded and defect investigation is carried out, whether a difference exists between d1 and d3 or whether a difference exists between d2 and d4 can be further judged to judge the coaxiality of the inner bearing and the outer bearing.
The detection method for the high-speed fan without the rotor shaft or with the rotor shaft detached comprises the following steps:
1) Fixing, namely clamping and fixing the device outside the fan shell based on a fixing module;
2) Acquiring a contraposition surface, acquiring distance data of end points of four corners of a contraposition frame 11 relative to an outer annular end surface of a magnetic suspension bearing outside a fan shell opening through a distance sensor 20, and performing deviation rectification adjustment on the contraposition frame 11 based on the 4 distance data to acquire a contraposition surface parallel to an outer suspension bearing installation end surface;
3) Coaxially positioning the probe rod 29, inserting the probe rod 29 into the first magnetic suspension bearing positioned on the outer side to obtain d1, d2, d3 and d4, feeding back the X-axis stroke mechanism and the Y-axis stroke mechanism based on the difference value of the data of d1 and d3 and/or the difference value of the data of d2 and d4, and adjusting the two-dimensional position of the positioning sliding table 21 based on the alignment surface to enable the probe rod 29 to be coaxial with the magnetic suspension bearing on the outer side;
4) Keeping the probe rod 29 coaxially positioned, starting the rotating seat 32 to rotate by a certain angle, measuring to obtain a group of data d1, d2, d3 and d4, rotating the same angle again to obtain a group of data d1, d2, d3 and d4 until the accumulation of the rotating angle exceeds 1 week, and setting the rotating angle and the measuring frequency according to requirements, wherein the smaller the rotating angle is, the more the measured data is, and the more accurate the detection result is;
5) And keeping the positioning of the probe rod 29 in the step 3), continuously extending the probe rod 29 inwards, detecting other magnetic suspension bearings in the shell, and repeating the step 4) until all the bearings in the shell are detected.
Based on this device, after carrying out above-mentioned data acquisition, can judge the inside global of bearing based on d1, d2, d3, d4 to judge whether have the problem in the precision, whether have the defect, or whether have wearing and tearing, thereby guarantee rotor shaft can the steady operation after the installation, guarantee high speed fan's operating capacity.
Claims (9)
1. A device for detecting the size and contour of a bearing in a magnetic suspension high-speed fan is characterized by comprising a fixing module, a deviation rectifying module and a detecting module;
the fixing module is configured for limiting and fixing relative to the fan to be tested;
the correction module comprises a square alignment frame, and the alignment frame is configured to obtain an alignment surface parallel to the installation end surface of the magnetic suspension bearing on the outer side of the fan to be detected;
the detection module comprises a positioning sliding table capable of realizing two-dimensional position positioning based on a counterpoint face, a detection table is fixed on the positioning sliding table, a probe rod in linear sliding fit with the detection table is arranged on the detection table, the stroke direction of the probe rod is perpendicular to the positioning face, one end, close to the fixing module, of the probe rod is provided with a rotating seat in rotating fit with the probe rod, four probes are distributed on the rotating seat in a cross manner, the probes obtain distance data d1, d2, d3 and d4, and the distance data of the probes are fed back and positioned until the reversed direction is consistent based on the position of the positioning sliding table.
2. The device for detecting the size and the contour of the bearing in the magnetic suspension high-speed fan is characterized in that the detection module controls the two-dimensional plane position of the positioning sliding table based on a double-shaft mechanism and comprises an X-shaft stroke mechanism and a Y-shaft stroke mechanism, the X-shaft stroke mechanism outputs a translation sliding block with parallel strokes of the upper side and the lower side of an alignment frame, the Y-shaft stroke mechanism is installed on the translation sliding block, the stroke direction of the Y-shaft stroke mechanism is parallel to the left side and the right side of the alignment frame, and the positioning sliding table outputs the strokes through the Y-shaft stroke mechanism.
3. The device for detecting the size and the contour of the inner bearing of the magnetic levitation high-speed fan as claimed in claim 1, wherein a sliding base is arranged on the detection platform, the probe rod penetrates through the sliding base and is in sliding fit with the sliding base, the cross section of the probe rod is circular, a guide groove extending along the length direction of the probe rod is arranged on one side of the probe rod close to the detection platform, a rack is arranged at the bottom of the guide groove, a driving gear driven by a motor is rotatably arranged on the detection platform, and the driving gear is meshed with the rack.
4. The device for detecting the size and the contour of the inner bearing of the magnetic levitation high-speed fan as recited in claim 1, wherein a pinion based on motor drive is rotatably mounted on the rotating base, a gear ring coaxial with the probe rod is fixed at one end of the probe rod close to the rotating base, the pinion is meshed with the gear ring, and the rotating base is driven to rotate coaxially relative to the probe rod at the front end of the probe rod.
5. The device for detecting the size and the profile of the inner bearing of the magnetic suspension high-speed fan as claimed in claim 1, wherein the step of screening the acquired distance data comprises the step of setting an upper limit difference threshold value, the upper limit difference threshold value is used for judging the diameters reflected by d1 and d3 and/or the diameter data reflected by d2 and d4 and the corresponding inner diameter difference of the magnetic suspension bearing to be detected, discarding the data with the difference value larger than the threshold value, and increasing the number of times of one rotation and data acquisition.
6. The device for detecting the size and the profile of the bearing in the magnetic suspension high-speed fan as claimed in claim 1, wherein the alignment frame is provided with fixing seats fixedly mounted at the end points of four corners, a mounting plate extending perpendicularly and outwardly is fixed on a connecting plate of each fixing seat, the mounting plate is provided with mounting holes, a ball seat fixedly mounted on the mounting plate through bolts is provided on the mounting plate, a spherical cavity is provided in the ball seat, a spherical member is roll-fitted in the spherical cavity, an adjusting screw is fixedly provided in the spherical member, an adjusting screw is provided in the adjusting screw, and two ends of the adjusting screw are rotatably mounted on the fixing module through bearing members;
the fixed seat is provided with a distance sensor, the distance sensor emits light beams forwards, and the directions of the light beams are perpendicular to the alignment frame.
7. The device for detecting the size and the contour of the inner bearing of the magnetic levitation high-speed fan as recited in claim 6, wherein the fixing module comprises a ferrule, the ferrule is sleeved outside the fan shell, at least 2 convex seats are circumferentially arranged on the ferrule, a threaded sleeve is arranged on the convex seats in the middle, and a jacking bolt is arranged through the threaded sleeve in a matching manner;
the ferrule bilateral symmetry is provided with mounting brackets, the extending direction of the mounting brackets is consistent with the radial direction of the ferrule, a front support frame and a rear support frame are fixed on the mounting brackets, the inner end of the front support frame is a front mounting position, the inner end of the rear support frame is a rear mounting position, and two ends of the adjusting screw rod are respectively mounted on the front mounting position and the rear mounting position.
8. The device for detecting the size and contour of the inner bearing of the magnetic levitation high-speed fan as recited in claim 7, wherein the inner end surface of the boss is provided with a receiving groove, the inner end of the tightening bolt is provided with a pressing block, the inner end surface of the pressing block is provided with a rubber pad, and the size of the pressing block is smaller than the cross section of the receiving groove by increasing the area and the rubber pad.
9. The device for detecting the dimensional profile of the inner bearing of the magnetic levitation high-speed fan as claimed in claim 6, wherein the fixing base comprises a connecting plate, the connecting plate extends back and forth, the connecting plate is provided with a baffle at both ends, 1-4 clamping plates are arranged on the end surface of the connecting plate adjacent to the alignment frame, the clamping plates and the baffle are vertically arranged relative to the connecting plate, a right-angle clamping groove is arranged on one side of each clamping plate away from the connecting plate, the right-angle clamping groove is matched with the corner end of the alignment frame, and the baffle is arranged on the end surface of the outer side of the alignment frame and is mounted on the alignment frame through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419638.XA CN115655182B (en) | 2022-11-14 | 2022-11-14 | Device for detecting size and contour of inner bearing of magnetic suspension high-speed fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116566140A (en) * | 2023-06-06 | 2023-08-08 | 山东华东风机有限公司 | Assembling equipment for magnetic suspension motor |
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| CN116566140B (en) * | 2023-06-06 | 2023-10-17 | 山东华东风机有限公司 | Assembling equipment for magnetic suspension motor |
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| CN115655182B (en) | 2023-03-10 |
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Denomination of invention: A device for measuring the size and contour of the inner bearing of a maglev high-speed fan Effective date of registration: 20230809 Granted publication date: 20230310 Pledgee: Jinan Zhangqiu District Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: Shandong tomorrow Machinery Group Co.,Ltd. Registration number: Y2023980051515 |