CN114543676B - Roller bearing radial runout and circle center movement curve detection device and detection method thereof - Google Patents
Roller bearing radial runout and circle center movement curve detection device and detection method thereof Download PDFInfo
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- CN114543676B CN114543676B CN202210172286.6A CN202210172286A CN114543676B CN 114543676 B CN114543676 B CN 114543676B CN 202210172286 A CN202210172286 A CN 202210172286A CN 114543676 B CN114543676 B CN 114543676B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a roller bearing radial runout and circle center movement curve detection device and a detection method thereof, belonging to the technical field of detection equipment; the displacement mechanism is provided with a sliding block capable of reciprocating displacement parallel to the linear ruler and the sliding block is provided with a guide structure capable of following the sliding block; one end of the guide structure is provided with a roller bearing which is in rolling contact with the linear ruler, and the other end of the guide structure is provided with a two-dimensional grating encoder; under the detection state, the driving slide block is driven to displace to drive the guiding structure to link, so that the two-dimensional grating encoder draws a radial runout curve and a circle center movement misalignment curve when the roller bearing rolls on the linear ruler.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a roller bearing radial runout and circle center movement curve detection device and a detection method thereof.
Background
The radial runout of the outer ring of the roller bearing is an important parameter index for judging the rotation precision of the bearing, most of the radial runout detection technology of the outer ring of the roller bearing in the prior art is to fix the inner ring of the bearing, the center of the circle of the inner ring is static, a displacement measuring device is adopted in the straight line direction passing through the center of the circle to measure the difference between the maximum radial distance and the minimum radial distance of the outer surface of the outer ring relative to a fixed point of the inner ring, the method can obtain the maximum range of the radial runout value (or the rolling radius change difference value of the outer ring) of the outer ring, but the method has the following defects:
1) According to the method, radial distance distribution curves (or the change rule of the rolling radius of the outer ring along with the angle of the center of the inner ring) of different angular positions relative to the center of the inner ring on the whole outer ring cannot be obtained, continuous data are difficult to obtain when a dial indicator is adopted, if the change quantity of a runout value can only be measured by adopting length timing, and the rotation angle of a roller which causes the change of the runout value cannot be synchronously obtained in real time;
2) Because the roller bearing has play, when the roller bearing repeatedly rolls over a certain distance, the movement track of the center of the inner circle (the inner circle is used for installing the fixed roller bearing) has a non-coincidence phenomenon, and the non-coincidence curve of the movement track of the center of the inner circle can not be synchronously obtained when the radial runout curve of the outer ring of the roller bearing is detected;
therefore, the invention provides the detection device and the detection method for the radial runout and circle center movement curve of the roller bearing, which can intuitively and rapidly acquire the radial runout change curve of the outer ring and the circle center movement misalignment curve of the inner ring of the roller bearing continuously and synchronously, and has the advantages of simple structure, convenience in use and high detection precision.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the device for detecting the radial runout and the circle center movement curve of the roller bearing, which can intuitively and rapidly obtain the radial runout change curve of the outer ring and the circle center movement misalignment curve of the inner ring of the roller bearing continuously and synchronously during detection, and has the advantages of simple structure, convenient use and high detection precision.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention discloses a roller bearing radial runout and circle center movement curve detection device, which comprises: the linear ruler comprises a base, a linear ruler and a displacement mechanism, wherein the linear ruler and the displacement mechanism are integrated on the base;
the displacement mechanism is provided with a sliding block capable of reciprocating displacement parallel to the linear ruler and the sliding block is provided with a guide structure capable of following the sliding block;
one end of the guide structure is provided with a roller bearing which is in rolling contact with the linear ruler, and the other end of the guide structure is provided with a two-dimensional grating encoder;
under the detection state, the driving sliding block is driven to displace to drive the guiding structure to link, so that the two-dimensional grating encoder draws a radial runout curve and a circle center movement misalignment curve when the roller bearing rolls on the linear ruler.
Further, the guide structure is perpendicular to the straight ruler and is arranged above the sliding block.
Further, the guide structure comprises a guide block fixedly connected with the sliding block and a guide rod in sliding connection with the guide block;
one end of the guide rod is fixedly connected with a roller bearing through a connecting piece, and the other end of the guide rod is provided with a two-dimensional grating encoder.
Further, an elastic member is provided between the guide block and the guide bar for applying a load to the roller bearing and maintaining the roller bearing in contact with the linear scale.
Further, the guide block is fixedly connected with a first bump, the guide rod is fixedly connected with a second bump, one end of the elastic component is connected with the first bump, and the other end of the elastic component is connected with the second bump.
Further, an elastic adjusting mechanism is arranged on the second bump and used for driving the elastic component to elastically deform.
Further, the elastic force adjusting mechanism comprises an adjusting rod arranged on the second lug and a positioning block connected with the elastic part, and the adjusting rod is in threaded connection with the positioning block.
Further, the two-dimensional grating encoder comprises a two-dimensional grating encoder reading head and a two-dimensional grating fixedly connected to the upper surface of the base;
the guide structure is fixedly connected with a reading head of the two-dimensional grating encoder, and the reading head of the two-dimensional grating encoder is in clearance fit with the two-dimensional grating.
Further, the displacement mechanism is provided with a sliding rail which is in sliding connection with the sliding block, and the straightness of the sliding rail is not more than 1 mu m.
The method for detecting the radial runout and the circle center movement curve of the roller bearing uses the device for detecting the radial runout and the circle center movement curve of the roller bearing;
the detection method comprises the following steps:
step A: providing a roller bearing;
step A1: the method comprises the steps of horizontally placing a roller bearing, fixing an inner ring of the roller bearing on a guide structure, and enabling an outer ring of the roller bearing to contact with the side wall of a linear ruler;
step A2: synchronously acquiring a radial runout curve of the outer ring of the roller bearing shaft and a non-coincident curve of the circle center movement of the inner ring;
step a2.1: acquiring a radial runout curve of the outer ring of the roller bearing shaft;
the driving slide block drives the guide structure to move parallel to the linear ruler, so that the guide structure is linked, and the two-dimensional grating encoder draws a radial runout curve of the outer ring of the roller bearing;
step A2.1.1: according to the curve change rule of the step A2.1, P in the curve 1 The point occurring at the maximum radial displacement position of the outer ring, P 2 The radial runout value of the outer ring of the roller bearing is calculated to be P=P by the minimum radial movement position of the outer ring 1 -P 2 ；
Step a2.2: acquiring a roller bearing shaft inner ring circle center movement misalignment curve;
the driving slide block drives the guide structure to reciprocate at least twice parallel to the linear ruler, and under the counter-clockwise or clockwise play action of the outer ring of the roller bearing on the plumb plane, a plurality of motion track curves of the circle centers of the inner rings of the roller bearing which are not overlapped in the rolling process are obtained;
step a2.2.1: according to the curve change rule of the step A2.2, the circle center movement of the inner ring of the roller bearing shaft is not coincident with the curve, and the distribution interval A is when the forward deflection is maximum 1 A when the curve and the reverse yaw are maximum 2 Between the curves, the misalignment of the roller bearing shaft inner ring circle center movement misalignment curve is calculated to be A=A 1 -A 2 。
In the technical scheme, the device and the method for detecting the radial runout and the circle center movement curve of the roller bearing are provided by the invention;
the detection device and the detection method for the radial runout and circle center movement curve of the roller bearing have the advantages that the visual and quick detection is realized, the radial runout change curve of the outer ring of the roller bearing and the circle center movement misalignment curve of the inner ring can be continuously and synchronously obtained, the structure is simple, the use is convenient, the detection precision is high, in addition, the detection device can be used for checking and evaluating a plurality of two-dimensional grating encoders by using the same high-precision roller bearing as a standard, the reading error of the two-dimensional grating encoder is compensated, and the precision of the two-dimensional grating encoder is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is an isometric view of a roller bearing radial runout and center motion curve detection device disclosed by the invention;
FIG. 2 is a front view of a roller bearing radial runout and center motion curve detection device disclosed by the invention;
FIG. 3 is an enlarged partial view of a roller bearing radial runout and center motion curve detection device disclosed by the invention;
FIG. 4 is a schematic diagram of the radial runout and center motion curve detection device of the roller bearing along the X axis and the Y axis;
FIG. 5 is a radial runout curve of the roller bearing drawn by a two-dimensional grating encoder of the roller bearing radial runout and circle center movement curve detection device disclosed by the invention;
FIG. 6 is a schematic diagram of the backlash state of a roller bearing of the roller bearing radial runout and circle center movement curve detection device disclosed by the invention;
fig. 7 is a diagram of a roller bearing inner circle center motion misalignment curve drawn by a two-dimensional grating encoder of the roller bearing radial runout and center motion curve detection device.
Reference numerals illustrate:
1. a base; 2. a straight line ruler; 3. a slide block; 4. a slide rail; 5. a guide structure; 501. a guide block; 502. a guide rod; 503. a connecting piece; 6. an elastic member; 7. a positioning block; 8. an adjusting rod; 9. a two-dimensional grating encoder; 901. a two-dimensional grating encoder reading head; 902. a two-dimensional grating; 10. roller bearings.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 1-2;
the invention discloses a roller bearing radial runout and circle center movement curve detection device, which comprises:
a base 1, a linear ruler 2 and a displacement mechanism which are integrated on the base 1; specifically, the base 1 is a precise marble table in the prior art, the linear ruler 2 is a precise linear ruler in the prior art, the upper surface of the base 1 is fixedly connected with the linear ruler 2 and the displacement mechanism along the X-axis direction, and the linear ruler 2 and the displacement mechanism are parallel to each other; the preferred displacement mechanism comprises a sliding block 3 and a sliding rail 4, the straightness of the sliding rail 4 is not more than 1 mu m, the sliding rail 4 is fixedly connected with the base 1, the sliding block 3 is connected on the sliding rail 4 in a sliding way,
the sliding block 3 can reciprocate parallel to the linear ruler 2, a guide structure 5 capable of following the sliding block 3 is arranged on the sliding block 3, one end of the guide structure 5 is provided with a roller bearing 10 which is in rolling contact with the linear ruler 2, and the other end of the guide structure 5 is provided with a two-dimensional grating encoder 9;
in the detection state, the driving slide block 3 is driven to displace to drive the guide structure 5 to act, so that the two-dimensional grating encoder 9 draws a radial runout curve and a circle center movement misalignment curve when the roller bearing 10 rolls on the linear ruler 2.
According to the detection device, primary displacement of the roller bearing 10 along the X-axis direction is driven by the sliding block 3, one end of the guide structure 5 is in rolling contact with the linear ruler 2 through the outer ring of the roller bearing 10 while the guide structure 5 follows the displacement of the sliding block 3, the radial change of the outer ring in the rolling process enables the guide structure 5 to reciprocate along the Y-axis direction, namely secondary displacement of the roller bearing 10 along the Y-axis direction is realized, and radial change of the outer ring of the roller bearing 10 can be transmitted to the two-dimensional grating encoder 9 in real time through the guide structure 5, and further, a radial runout change curve of the outer ring of the roller bearing and a circle center movement misalignment curve of the inner ring can be intuitively, rapidly and synchronously obtained through the two-dimensional grating encoder 9, the preferred two-dimensional grating encoder 9 comprises a two-dimensional grating encoder reading head 901 and a two-dimensional grating 902, the upper surface of the base 1 is fixedly connected with the two-dimensional grating encoder reading head 901, and the guide structure 5 is positioned above the two-dimensional grating encoder 902; the two-dimensional grating encoder reading head 901 is in clearance fit with the two-dimensional grating 902, so that X, Y direction data is output when relative movement occurs, the two-dimensional grating encoder reading head 901 is connected with external reading equipment (not shown), and the external reading equipment reads curve data through the two-dimensional grating encoder reading head 901 and realizes data processing and display of a composite curve;
preferably, the guide structure 5 is arranged above the slider 3 perpendicular to the linear ruler 2. During detection, the sliding block 3 is driven to move, the guide structure 5 moves along with the sliding block 3 in a reciprocating manner perpendicular to the linear ruler 2, a wavy curve similar to a sine curve is obtained from an X-axis and Y-axis coordinate system, the distance between the wave crest and the wave trough of the curve is convenient to measure, and the measurement accuracy is improved;
as shown in fig. 1, the guide structure 5 preferably includes a guide block 501 fixedly connected with the slider 3 and a guide rod 502 slidably connected with the guide block 501;
one end of the guide rod 502 is fixedly connected with the roller bearing 10 through a connecting piece 503, and the two-dimensional grating encoder 9 is arranged at the other end of the guide rod 502.
Specifically, the connecting piece 503 may be a screw in the prior art, and the screw passes through a central hole of an inner ring of the roller bearing 10 to be in threaded connection with the guide rod 502, so that the inner ring of the roller bearing 10 is fixed on the guide rod 502, and the central position of the inner ring on the guide rod 502 is ensured to be unchanged when the outer ring of the roller bearing 10 rolls;
during detection, referring to fig. 1 and 4, the sliding block 3 moves along the X axis, the outer ring of the roller bearing 10 rolls on the side wall of the linear ruler 2, and the guide rod 502 moves reciprocally in a floating manner along the Y axis direction along with the rolling displacement of the outer ring of the roller bearing 10, so that the two-dimensional grating encoder 9 at the tail end of the guide rod 502 draws a continuous curve similar to a sine curve;
referring to fig. 2-3, preferably, an elastic member 6 is provided between the guide block 501 and the guide bar 502 for applying a load to the roller bearing 10 and maintaining the roller bearing 10 in contact with the linear scale 2.
Specifically, the elastic component 6 is an extension spring in the prior art, of course, the elastic component 6 may be other springs or devices capable of providing elastic force in the prior art, so that load can be applied to the roller bearing 10 and the roller bearing 10 is kept in contact with the linear ruler 2, in this embodiment, the elastic component 6 is taken as an extension spring, the roller bearing 10 is kept in contact with the linear ruler 2 by contraction of the extension spring, and meanwhile, load is applied to the roller bearing 10, so that a true outer ring radial runout curve and an inner ring center movement misalignment curve are obtained under the condition that the roller bearing 10 is subjected to load acting force in a simulation manner, and measurement accuracy is further improved;
referring to fig. 1, preferably, the guide block 501 is fixedly connected with a first bump, the guide rod 502 is fixedly connected with a second bump, one end of the elastic member 6 is connected with the first bump, and the other end is connected with the second bump.
Specifically, the guide block 501 is fixedly connected with a first bump far away from the linear ruler 2, the guide rod 502 is positioned at the two-dimensional grating encoder 9 and fixedly connected with a second bump, the elastic component 6 is connected between the first bump and the second bump, the elastic component 6 is contracted, the distance between the first bump and the second bump is pulled up, and therefore the guide rod 502 is driven to move towards the linear ruler 2 and apply load acting force to the roller bearing 10;
as shown in fig. 1, preferably, the second bump is provided with a spring adjusting mechanism for driving the elastic member 6 to elastically deform.
Specifically, an elastic force adjusting mechanism for driving the elastic member 6 to elastically deform is arranged on the guide rod 502, and the elastic deformation of the elastic member 6 is changed through the elastic force adjusting mechanism, so that different elastic forces are generated by the elastic member 6, further different load acting forces are applied to the roller bearing 10, and the outer ring radial runout curve and the inner ring circle center movement misalignment curve can be conveniently obtained under the different load acting forces; preferably, the elastic force adjusting mechanism comprises an adjusting rod 8 arranged on the second protruding block and a positioning block 7 connected with the elastic component 6, the adjusting rod 8 is in threaded connection with the positioning block 7, the adjusting rod 8 can be an inner hexagon bolt in the prior art, and the elastic force value is changed by rotating the adjusting rod 8 to change the screwing length of the adjusting rod 8 and the positioning block 7 and stretching the elastic component 6 to deform.
The method for detecting the radial runout and circle center movement misalignment curve of the roller bearing uses the device for detecting the radial runout and circle center movement curve of the roller bearing;
the detection method comprises the following steps:
step A: providing a roller bearing 10;
step A1: the roller bearing 10 is horizontally arranged, the inner ring of the roller bearing 10 is fixed on the guide structure 5, and the outer ring of the roller bearing 10 is contacted with the side wall of the linear ruler 2;
step A2: synchronously acquiring a radial runout curve of the outer ring of the roller bearing shaft and a non-coincident curve of the circle center movement of the inner ring;
step a2.1: acquiring a radial runout curve of the outer ring of the roller bearing shaft;
the driving sliding block 3 drives the guide structure 5 to move parallel to the linear ruler 2, so that the guide structure 5 is linked, and the two-dimensional grating encoder 9 draws a radial runout curve of the outer ring of the roller bearing 10;
specifically, the manner of driving the sliding block 3 to displace can be driven manually by adopting equipment or manpower, the sliding block 3 drives the guide structure 5 to displace along the X axis, the outer ring of the roller bearing 10 rolls along the linear ruler 2 to displace, the radial runout variable quantity of the outer ring during rolling enables the guide structure 5 to displace reciprocally along the Y axis, and the radial runout variable quantity of the outer ring of the roller bearing 10 is synchronously transmitted to the two-dimensional grating encoder 9 through the guide structure 5, at the moment, the two-dimensional grating encoder reading head 901 moves along the X direction along with the roller bearing 10, the two-dimensional grating encoder reading head 901 moves relatively with the two-dimensional grating 902 along the X direction, and X-direction coordinate data is output; at this time, if the roller bearing 10 has an eccentricity, the guide rod 502 of the guide structure 5 will be caused to slide along the Y direction, so as to drive the two-dimensional grating encoder reading head 901 to move along the Y direction, the two-dimensional grating encoder reading head 901 and the two-dimensional grating 902 will relatively move along the Y direction, and the Y-direction coordinate data will be output, further, it can be known that, due to the radial runout of the roller bearing 10, when the two-dimensional grating encoder reading head 901 moves along the X direction, the axis of the roller bearing 10 and the two-dimensional grating encoder reading head 901 will naturally reciprocate along the Y direction (the roller bearing 10 rolls 360 ° for one period), the two-dimensional grating encoder reading head 901 will transmit the data read along the X, Y direction to the external reading device, the external reading device is integrated with the PLC control system, the PLC control system is connected with the display screen, the PLC control system will output the processed data on the display screen with the X axis as the angle change amount, the Y axis as the displacement change amount, and the curve with the periodic change will be drawn on the display screen, as shown in fig. 5.
Step A2.1.1: according to the curve change rule of the step A2.1, P in the curve 1 The point occurring at the maximum radial displacement position of the outer ring, P 2 The radial runout value of the outer ring of the roller bearing 10 is calculated to be P=P by the minimum radial movement position of the outer ring 1 -P 2 ；
Step a2.2: acquiring a roller bearing shaft inner ring circle center movement misalignment curve;
the driving sliding block 3 drives the guide structure 5 to reciprocate at least twice parallel to the linear ruler 2, and under the action of counterclockwise or clockwise play on a plumb plane, the outer ring of the roller bearing 10 obtains a plurality of motion track curves of the circle centers of the inner rings of the roller bearing 10 which are not overlapped in the rolling process;
specifically, as shown in fig. 6, a play phenomenon is generated during the rolling of the roller bearing 10, and the play affects the movement locus of the inner ring shaft center of the roller bearing 10 under a certain load. The dashed box indicates that the roller bearing 10 is at the limit position of deflection, b indicates the maximum deflection angle clockwise according to the illustrated position, and as shown in fig. 7, a indicates the maximum deflection angle anticlockwise according to the illustrated position, when the roller bearing 10 moves along the X direction, weak deflection exists between the limit deflection angles a and b, the variation of the swing amplitude necessarily causes the movement track of the circle center of the inner ring of the roller bearing 10 to vary during the rolling process, in order to obtain the continuous variation rule of the track, the two-dimensional grating encoder 9 is adopted to measure X, Y direction data, and a curve is drawn according to the maximum deflection angle, so that the movement track of the circle center of the inner ring of the roller bearing 10 can be intuitively seen. Further, the uncertainty of the weak swing can cause incomplete superposition phenomenon when curves of multiple strokes (going-out and return-in) are superposed on the same coordinate system, namely, a curve of the misalignment of the circle center motion of the inner ring of the roller bearing shaft is obtained, as shown in fig. 7;
step a2.2.1: according to the curve change rule of the step A2.2, the circle center movement of the inner ring of the roller bearing shaft 10 is not coincident with the curve, and the distribution interval A is when the forward deflection is maximum 1 A when the curve and the reverse yaw are maximum 2 Between the curves, thus calculating that the misalignment of the circle center movement misalignment curve of the inner ring of the roller bearing shaft 10 is A=A 1 -A 2 。
The detection device and the detection method for the radial runout and circle center movement curve of the roller bearing have the advantages that the visual and quick detection is realized, the radial runout change curve of the outer ring of the roller bearing and the circle center movement misalignment curve of the inner ring can be continuously and synchronously obtained, the structure is simple, the use is convenient, the detection precision is high, in addition, the detection device can be used for checking and evaluating a plurality of two-dimensional grating encoders by using the same high-precision roller bearing as a standard, the reading error of the two-dimensional grating encoder is compensated, and the precision of the two-dimensional grating encoder is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. Roller bearing radial runout and centre of a circle motion curve detection device, its characterized in that includes:
the linear ruler comprises a base (1), a linear ruler (2) and a displacement mechanism, wherein the linear ruler (2) and the displacement mechanism are integrated on the base (1);
the displacement mechanism is provided with a sliding block (3) capable of being reciprocally displaced parallel to the linear ruler (2), and the sliding block (3) is provided with a guide structure (5) capable of being followed by the sliding block;
one end of the guide structure (5) is provided with a roller bearing (10) which is in rolling contact with the linear ruler (2), and the other end of the guide structure is provided with a two-dimensional grating encoder (9);
under the detection state, the driving sliding block (3) is driven to displace to drive the guiding structure (5) to link, so that the two-dimensional grating encoder (9) draws a radial runout curve and a circle center movement misalignment curve when the roller bearing (10) rolls on the linear ruler (2).
2. The roller bearing radial runout and circle center movement curve detection device according to claim 1, wherein the device is characterized in that;
the guide structure (5) is perpendicular to the linear ruler (2) and is arranged above the sliding block (3).
3. The roller bearing radial runout and circle center movement curve detection device according to claim 1 or 2, characterized in that;
the guide structure (5) comprises a guide block (501) fixedly connected with the sliding block (3) and a guide rod (502) in sliding connection with the guide block (501);
one end of the guide rod (502) is fixedly connected with a roller bearing (10) through a connecting piece (503), and the other end of the guide rod (502) is provided with a two-dimensional grating encoder (9).
4. The roller bearing radial runout and circle center movement curve detection device according to claim 3, wherein the device is characterized in that;
an elastic component (6) is arranged between the guide block (501) and the guide rod (502) and is used for applying load to the roller bearing (10) and keeping the roller bearing (10) in contact with the linear ruler (2).
5. The roller bearing radial runout and circle center movement curve detection device according to claim 4, wherein the device is characterized in that;
the guide block (501) is fixedly connected with a first bump, the guide rod (502) is fixedly connected with a second bump, one end of the elastic component (6) is connected with the first bump, and the other end is connected with the second bump.
6. The roller bearing radial runout and circle center movement curve detection device according to claim 5, wherein the device is characterized in that;
the second bump is provided with an elastic adjusting mechanism for driving the elastic component (6) to elastically deform.
7. The roller bearing radial runout and center motion curve detection device according to claim 6, wherein;
the elastic force adjusting mechanism comprises an adjusting rod (8) arranged on the second lug and a positioning block (7) connected with the elastic part (6), and the adjusting rod (8) is in threaded connection with the positioning block (7).
8. The roller bearing radial runout and circle center movement curve detection device according to claim 1, wherein the device is characterized in that;
the two-dimensional grating encoder (9) comprises a two-dimensional grating encoder reading head (901) and a two-dimensional grating (902) fixedly connected to the upper surface of the base (1);
the guide structure (5) is fixedly connected with a two-dimensional grating encoder reading head (901), and the two-dimensional grating encoder reading head (901) is in clearance fit with the two-dimensional grating (902).
9. The roller bearing radial runout and circle center movement curve detection device according to claim 1, wherein the device is characterized in that;
the displacement mechanism is provided with a sliding rail (4) which is in sliding connection with the sliding block (3), and the straightness of the sliding rail (4) is not more than 1 mu m.
10. The method for detecting the radial runout and the circle center movement curve of the roller bearing, which is characterized by using the device for detecting the radial runout and the circle center movement curve of the roller bearing according to any one of claims 1-9;
the detection method comprises the following steps:
step A: providing a roller bearing (10);
step A1: the method comprises the steps of horizontally arranging a roller bearing (10), fixing an inner ring of the roller bearing (10) on a guide structure (5), and enabling an outer ring of the roller bearing (10) to contact with the side wall of a linear ruler (2);
step A2: synchronously acquiring a radial runout curve of an outer ring and a circle center movement misalignment curve of an inner ring of a roller bearing shaft (10);
step a2.1: acquiring a radial runout curve of the outer ring of the roller bearing shaft (10);
the driving sliding block (3) drives the guide structure (5) to displace parallel to the linear ruler (2), so that the guide structure (5) is linked, and the two-dimensional grating encoder (9) draws a radial runout curve of the outer ring of the roller bearing (10);
step A2.1.1: according to the curve change rule of the step A2.1, P in the curve 1 The point occurring at the maximum radial displacement position of the outer ring, P 2 The radial runout value of the outer ring of the roller bearing (10) is calculated to be P=P by the minimum radial movement position of the outer ring 1 -P 2 ；
Step a2.2: acquiring a non-coincident curve of the circle center movement of the inner ring of the roller bearing shaft (10);
the driving sliding block (3) drives the guide structure (5) to reciprocate at least twice in parallel to the linear ruler (2), and under the play action of the anticlockwise or clockwise on the plumb plane, the outer ring of the roller bearing (10) obtains a plurality of motion track curves of the circle centers of the inner rings of the roller bearing (10) which are not overlapped in the rolling process;
step a2.2.1: according to the curve change rule of the step A2.2, the circle center movement of the inner ring of the roller bearing shaft (10) is not coincident with the curve, and the distribution interval A is when the forward deflection is maximum 1 A when the curve and the reverse yaw are maximum 2 Between the curves, thus calculating that the misalignment of the movement misalignment curve of the circle center of the inner ring of the roller bearing shaft (10) is A=A 1 -A 2 。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021110016167 | 2021-08-30 | ||
| CN202111001616.7A CN113587817A (en) | 2021-08-30 | 2021-08-30 | Device and method for detecting radial run-out and circle center motion curve of roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114543676A CN114543676A (en) | 2022-05-27 |
| CN114543676B true CN114543676B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111001616.7A Withdrawn CN113587817A (en) | 2021-08-30 | 2021-08-30 | Device and method for detecting radial run-out and circle center motion curve of roller bearing |
| CN202210172286.6A Active CN114543676B (en) | 2021-08-30 | 2022-02-24 | Roller bearing radial runout and circle center movement curve detection device and detection method thereof |
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| CN202111001616.7A Withdrawn CN113587817A (en) | 2021-08-30 | 2021-08-30 | Device and method for detecting radial run-out and circle center motion curve of roller bearing |
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| CN116772680B (en) * | 2023-08-24 | 2023-11-24 | 四川名人居门窗有限公司 | Pulley runout tester and testing method |
| CN117450895B (en) * | 2023-12-25 | 2024-03-12 | 青岛默森制造技术有限公司 | Automobile hub roundness detection equipment and detection method thereof |
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| CN114543676A (en) | 2022-05-27 |
| CN113587817A (en) | 2021-11-02 |
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