CN114543676A - Device and method for detecting radial run-out and circle center motion curve of roller bearing - Google Patents
Device and method for detecting radial run-out and circle center motion curve of roller bearing Download PDFInfo
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- CN114543676A CN114543676A CN202210172286.6A CN202210172286A CN114543676A CN 114543676 A CN114543676 A CN 114543676A CN 202210172286 A CN202210172286 A CN 202210172286A CN 114543676 A CN114543676 A CN 114543676A
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- 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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Abstract
The invention discloses a device and a method for detecting radial run-out and circle center movement curves of a roller bearing, belonging to the technical field of detection equipment, and the device 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 slide block which can be displaced in a reciprocating manner in parallel to the linear ruler, and the slide block is provided with a guide structure which can follow the slide block; one end of the guide structure is provided with a roller bearing which keeps rolling contact with the linear ruler gauge, and the other end of the guide structure is provided with a two-dimensional grating encoder; in a detection state, the driving slide block displaces to drive the guide structure to be linked, so that the two-dimensional grating encoder draws a radial run-out curve and a circle center movement non-coincident curve of the roller bearing 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 device and a method for detecting radial run-out and circle center motion curves of a roller bearing.
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 prior art roller bearing outer ring radial runout detection technologies are that the inner ring of a fixed bearing is fixed, the circle center of the inner ring is static, a displacement measuring device is adopted in the linear direction passing through the circle center, the difference between the maximum radial distance and the minimum radial distance of the outer surface of the outer ring at different angular positions of the outer ring relative to a fixed point of the inner ring is measured, the method can obtain the maximum range of the radial runout value (or called outer ring rolling radius change difference value), but the method has the following defects:
1) the method can not obtain radial distance distribution curves (or called change rule of outer ring rolling radius along with inner ring circle center angle) of different angular positions on the whole outer ring relative to the circle center of the inner ring, when a dial indicator is adopted, it is difficult to obtain continuous data, if length timing is adopted, only the change quantity of the run-out value can be measured, and the roller rotation angle causing the run-out value change can not be synchronously obtained in real time;
2) because the roller bearing has a clearance, when the roller bearing repeatedly rolls on a certain distance, the movement locus of the circle center of the inner ring (the inner ring is used for installing and fixing the roller bearing) has a non-coincident phenomenon, and the movement locus non-coincident curve of the circle center of the inner ring cannot be synchronously obtained when the radial run-out curve of the outer ring of the roller bearing is detected;
therefore, in view of the above problems, the present invention provides a device and a method for detecting radial run-out and circle center movement curves of a roller bearing, which are capable of visually and quickly acquiring a change curve of the radial run-out amount of an outer ring of the roller bearing and a non-coincident curve of the circle center movement of the inner ring simultaneously and continuously and synchronously, and have the advantages of simple structure, convenient use and high detection precision.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the device for detecting the radial run-out and circle center movement curves of the roller bearing, which can visually and quickly detect the radial run-out change curve of the outer ring of the roller bearing and the circle center movement non-coincident curve of the inner ring of the roller bearing, and has the advantages of simple structure, convenience in use and high detection precision.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a roller bearing radial run-out and circle center motion curve detection device, which comprises: the displacement measuring device 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 slide block which can be displaced in a reciprocating manner in parallel to the linear ruler, and the slide block is provided with a guide structure which can follow the slide block;
one end of the guide structure is provided with a roller bearing which keeps rolling contact with the linear ruler gauge, 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 displaced to drive the guide structure to be linked, so that the two-dimensional grating encoder draws a radial run-out curve and a circle center movement noncoincidence curve when the roller bearing rolls on the linear ruler.
Further, the guide structure is perpendicular to the linear ruler and is arranged above the sliding block.
Furthermore, the guide structure comprises a guide block fixedly connected with the sliding block and a guide rod connected with the guide block in a sliding manner;
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.
Furthermore, an elastic component is arranged between the guide block and the guide rod and used for applying load to the roller bearing and keeping the roller bearing in contact with the linear ruler.
Furthermore, the guide block is fixedly connected with a first convex block, the guide rod is fixedly connected with a second convex block, one end of the elastic component is connected with the first convex block, and the other end of the elastic component is connected with the second convex block.
Furthermore, an elastic force adjusting mechanism is arranged on the second bump and used for driving the elastic component to elastically deform.
Furthermore, elasticity adjustment mechanism is including installing the regulation pole on the second lug and the locating piece of being connected with elastomeric element, adjusts pole and locating piece threaded connection.
Further, the two-dimensional grating encoder comprises a reading head of the two-dimensional grating encoder 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 slide rail which is connected with the slide block in a sliding way, and the straightness of the slide rail is not more than 1 μm.
The method for detecting the radial run-out and circle center movement curve of the roller bearing uses the device for detecting the radial run-out and circle center movement curve of the roller bearing;
the detection method comprises the following steps:
step A: providing a roller bearing;
step A1: horizontally placing the roller bearing, fixing the inner ring of the roller bearing on the guide structure, and contacting the outer ring of the roller bearing with the side wall of the linear ruler;
step A2: synchronously acquiring a radial run-out curve of an outer ring of the roller bearing and a non-coincident curve of the movement of the circle center of an inner ring;
step A2.1: acquiring a radial run-out curve of the outer ring of the roller bearing;
the driving slide block drives the guide structure to move parallel to the linear ruler gauge, so that the guide structure is linked, and the two-dimensional grating encoder draws a radial run-out curve of the outer ring of the roller bearing;
step A2.1.1: according to the curve change rule of step A2.1, P in the curve1The point occurring at the maximum radial displacement position of the outer ring, P2The minimum radial displacement position of the outer ring is generated, and the radial runout value of the outer ring of the roller bearing is calculated to be P ═ P1-P2；
Step A2.2: acquiring a non-coincident curve of the movement of the circle center of the inner ring of the roller bearing;
the driving slide block drives the guide structure to reciprocate at least twice parallel to the linear ruler, and the outer ring of the roller bearing obtains a plurality of non-coincident motion track curves of the center of the inner ring of the outer ring of the roller bearing in the rolling process under the action of counterclockwise or clockwise play on the plumb bob plane;
step A2.2.1: according to the curve change rule of the step A2.2, the circle centers of the inner rings of the roller bearings do not move to coincide with the curve, and the distribution interval of the curve is A when the positive deflection is maximum1When the curve and the reverse deflection are maximum A2The misalignment of the movement misalignment curves of the circle centers of the inner rings of the roller bearings is calculated from the curves, wherein A is equal to A1-A2。
In the technical scheme, the invention provides a device and a method for detecting radial run-out and circle center movement curves of a roller bearing;
the detection device and the detection method have the advantages that the radial run-out and circle center movement curve detection device and the detection method of the roller bearing are visual and rapid, the change curve of the radial run-out amount of the outer ring of the roller bearing and the non-coincident curve of the circle center movement 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 check and evaluate 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 encoders is compensated, and the improvement of the precision of the two-dimensional grating encoders is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used 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 can be obtained by those skilled in the art according to the drawings.
FIG. 1 is an isometric view of a roller bearing radial run-out and circle center motion curve detection device disclosed in the present invention;
FIG. 2 is a front view of a radial run-out and circle center movement curve detection device for a roller bearing according to the present invention;
FIG. 3 is a partial enlarged view of a radial run-out and center of circle motion curve detection device for a roller bearing according to the present disclosure;
FIG. 4 is a schematic diagram of the radial run-out and circle center movement curve detection device of the roller bearing according to the present invention moving along the X-axis and the Y-axis;
FIG. 5 is a radial run-out curve of the roller bearing drawn by a two-dimensional grating encoder of the roller bearing radial run-out and circle center motion curve detection device disclosed by the invention;
FIG. 6 is a schematic view of the roller bearing play state of the device for detecting radial run-out and circle center movement curve of the roller bearing according to the present invention;
FIG. 7 is a non-coincident curve of the inner circle center movement of the roller bearing drawn by the two-dimensional grating encoder of the roller bearing radial run-out and circle center movement curve detection device disclosed by the invention.
Description of reference numerals:
1. a base; 2. a linear ruler; 3. a slider; 4. a slide rail; 5. a guide structure; 501. a guide block; 502. a guide bar; 503. a connecting member; 6. an elastic member; 7. positioning blocks; 8. adjusting a rod; 9. a two-dimensional grating encoder; 901. a two-dimensional grating encoder reading head; 902. a two-dimensional grating; 10. and a roller bearing.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in FIGS. 1-2;
the invention discloses a device for detecting radial run-out and circle center motion curve of a roller bearing, which comprises:
the device comprises a base 1, a linear ruler 2 integrated on the base 1 and a displacement mechanism; specifically, the base 1 is a precision marble table top in the prior art, the linear ruler 2 is a precision linear ruler in the prior art, the linear ruler 2 and the displacement mechanism are fixedly connected to the upper surface of the base 1 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 slide block 3 and a slide rail 4, the straightness of the slide rail 4 is not more than 1 μm, the slide rail 4 is fixedly connected with the base 1, the slide block 3 is connected on the slide rail 4 in a sliding way,
the sliding block 3 can be parallel to the linear ruler 2 for reciprocating displacement, a guide structure 5 capable of being followed by 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 keeps 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 slide block 3 is displaced to drive the guide structure 5 to be linked, so that the two-dimensional grating encoder 9 draws a radial run-out curve and a circle center movement noncoincidence curve when the roller bearing 10 rolls on the linear ruler 2.
The detection device drives the roller bearing 10 to displace in a first-stage manner along the X-axis direction through the slider 3, while the guide structure 5 displaces along the slider 3, one end of the guide structure 5 keeps rolling contact with the linear scale 2 through the outer ring of the roller bearing 10, the guide structure 5 reciprocates along the Y-axis direction due to radial variation of the outer ring in the rolling process, namely, the roller bearing 10 displaces in a second-stage manner along the Y-axis direction, and the radial variation 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, so that the variation curve of the radial jump amount of the outer ring of the roller bearing and the movement non-coincident curve of the circle center of the inner ring can be intuitively, quickly and synchronously obtained continuously 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, and the upper surface of the base 1 is fixedly connected with the two-dimensional grating 902, the guide structure 5 is fixedly connected with a two-dimensional grating encoder reading head 901 above the two-dimensional grating 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 are output when the two-dimensional grating encoder reading head 901 and the two-dimensional grating 902 move relatively, the two-dimensional grating encoder reading head 901 is connected with an external reading device (not shown), the external reading device reads curve data through the two-dimensional grating encoder reading head 901, and data processing and display of a synthesized curve are achieved;
preferably, the guide structure 5 is arranged above the slide 3 perpendicularly to the linear scale 2. During detection, the slide block 3 is driven to move, the guide structure 5 follows the slide block 3 to do reciprocating displacement motion perpendicular to the linear scale 2, a wave-shaped curve similar to a sine curve is obtained in an X-axis and Y-axis coordinate system, the distance between the wave crest and the wave trough of the curve is conveniently measured, and the measurement precision is improved;
referring to fig. 1, preferably, the guide structure 5 includes a guide block 501 fixedly connected to the sliding block 3 and a guide rod 502 slidably connected to 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 other end of the guide rod 502 is provided with a two-dimensional grating encoder 9.
Specifically, the connecting member 503 may be a screw in the prior art, and the screw passes through a central hole of the inner ring of the roller bearing 10 and is 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 slide block 3 moves along the X axis, the outer ring of the roller bearing 10 rolls on the side wall of the linear scale 2 to move, and the guide rod 502 generates Y axis direction floating reciprocating displacement 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 installed 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, and certainly, the elastic component 6 may also be another spring or device capable of providing elastic force in the prior art, and it is sufficient to apply a load to the roller bearing 10 and keep the roller bearing 10 in contact with the linear scale 2, in this embodiment, taking the elastic component 6 as an extension spring as an example, the roller bearing 10 keeps in contact with the linear scale 2 by contraction of the extension spring, and simultaneously apply a load to the roller bearing 10, so that the roller bearing 10 obtains a true outer ring radial run-out curve and an inner ring circle center movement noncoincidence curve under the condition of simulating a load bearing acting force, and the 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, and one end of the elastic component 6 is connected with the first bump and the other end is connected with the second bump.
Specifically, a first bump is fixedly connected to the end, far away from the linear scale 2, of the guide block 501, a second bump is fixedly connected to the end, located at the two-dimensional grating encoder 9, of the guide rod 502, the elastic part 6 is connected between the first bump and the second bump, the elastic part 6 contracts and draws the distance between the first bump and the second bump, so that the guide rod 502 is driven to displace towards the linear scale 2 and apply a load acting force to the roller bearing 10;
referring to fig. 1, preferably, the second protrusion is provided with an elastic force adjusting mechanism for driving the elastic member 6 to elastically deform.
Specifically, the guide rod 502 is provided with an elastic force adjusting mechanism for driving the elastic component 6 to elastically deform, and the elastic deformation of the elastic component 6 is changed through the elastic force adjusting mechanism, so that the elastic component 6 generates different elastic forces, and different load acting forces are further applied to the roller bearing 10, and an outer ring radial run-out curve and an inner ring center movement misalignment curve can be conveniently obtained under different load acting forces; preferably, elasticity adjustment mechanism is including installing regulation pole 8 on the second lug and the locating piece 7 of being connected with elastomeric element 6, adjusts pole 8 and 7 threaded connection of locating piece, adjusts pole 8 and can be hexagon socket head cap screw among the prior art, through rotatory regulation pole 8, changes and adjusts pole 8 and 7 soon to close tensile elastomeric element 6 of length and warp and change the elasticity value with locating piece.
The method for detecting the curve of the radial run-out and the movement of the circle center of the roller bearing without the coincidence is characterized in that the device for detecting the radial run-out and the movement of the circle center of the roller bearing is used;
the detection method comprises the following steps:
step A: providing a roller bearing 10;
step A1: horizontally placing the roller bearing 10, fixing the inner ring of the roller bearing 10 on the guide structure 5, and contacting the outer ring of the roller bearing 10 with the side wall of the linear ruler 2;
step A2: synchronously acquiring a radial run-out curve of an outer ring of the roller bearing and a non-coincident curve of the movement of the circle center of an inner ring;
step A2.1: acquiring a radial run-out curve of the outer ring of the roller bearing;
the driving slide 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 run-out curve of the outer ring of the roller bearing 10;
specifically, the mode of driving the slider 3 to displace can adopt equipment or manual driving, the slider 3 drives the guide structure 5 to displace along the X axis, the outer ring of the roller bearing 10 displaces along the rolling of the linear ruler 2, the radial run-out variation of the outer ring during rolling enables the guide structure 5 to displace in a reciprocating manner along the Y axis, and the radial run-out variation 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 reading head 901 of the two-dimensional grating encoder moves along the X direction along with the roller bearing 10, the reading head 901 of the two-dimensional grating encoder and the two-dimensional grating 902 move relatively in the X direction, and coordinate data in the X direction are output; at this time, if the roller bearing 10 is eccentric, the guide rod 502 of the guide structure 5 is inevitably 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 relatively move in the Y direction, and output Y-direction coordinate data, further, it is known that, because the roller bearing 10 has radial runout, 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 inevitably make periodic reciprocating motion in the Y direction (the roller bearing 10 rolls 360 degrees to form a period), the two-dimensional grating encoder reading head 901 transmits data read along the X, Y direction to an external reading device, the external reading device is integrated with a PLC control system, the PLC control system is connected with a display screen, the PLC control system uses the X axis as an angle variation of the processed data, the Y-axis is the displacement variation, and is plotted as a curve with periodic variation and output to the display screen, as shown in fig. 5.
Step A2.1.1: according to the curve change rule of step A2.1, P in the curve1The point occurring at the maximum radial displacement position of the outer ring, P2The minimum radial run-out position of the outer ring is generated, and the radial run-out value of the outer ring of the roller bearing 10 is calculated as P ═ P1-P2；
Step A2.2: acquiring a non-coincident curve of the movement of the circle center of the inner ring of the roller bearing;
the driving slide block 3 drives the guide structure 5 to reciprocate at least twice parallel to the linear ruler 2, and the outer ring of the roller bearing 10 obtains a plurality of movement track curves of the centers of the inner rings of the non-coincident outer rings of the roller bearing 10 in the rolling process under the action of counterclockwise or clockwise play on the plane of the plumb bob;
specifically, as shown in fig. 6, a play phenomenon occurs during rolling of the roller bearing 10, and the play affects the movement locus of the inner ring axis of the roller bearing 10 under a constant load. The dotted line frame represents the extreme position of the rolling bearing 10 in the deflection, b represents the maximum deflection angle clockwise according to the position shown in the figure, as shown in fig. 7, a represents the maximum deflection angle counterclockwise according to the position shown in the figure, when the rolling bearing 10 moves along the X direction, a weak swing exists between the extreme deflection angles a and b, the change of the swing amplitude value inevitably causes the change of the movement track of the center of the inner circle of the rolling bearing 10 in the rolling process, in order to obtain the continuous change rule of the track, X, Y direction data is measured by using the two-dimensional grating encoder 9, a curve is drawn according to the direction data, and the movement track of the center of the inner circle of the rolling bearing 10 can be visually seen. Further, the uncertainty of the weak swing can cause the incomplete coincidence phenomenon when curves of multiple strokes (go and return strokes) are superposed in the same coordinate system, namely a non-coincident curve of the movement of the circle center of the inner ring of the roller bearing is obtained, as shown in fig. 7;
step A2.2.1: according to the curve change rule of the step A2.2, the circle centers of the inner rings of the roller bearing 10 do not move to coincide with the curve, and the distribution interval of the curve is A when the positive deflection is maximum1When the curve and the reverse deflection are maximum A2The misalignment of the inner circle center motion misalignment curves of the roller bearing 10 is calculated from the curves, wherein A is A1-A2。
The detection device and the detection method have the advantages that the radial run-out and circle center movement curve detection device and the detection method of the roller bearing are visual and rapid, the change curve of the radial run-out amount of the outer ring of the roller bearing and the non-coincident curve of the circle center movement 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 check and evaluate 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 encoders is compensated, and the improvement of the precision of the two-dimensional grating encoders is facilitated.
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 the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. Roller bearing runout and centre of a circle motion curve detection device, its characterized in that includes:
the device comprises a base (1), a linear ruler (2) integrated on the base (1) and a displacement mechanism;
the displacement mechanism is provided with a slide block (3) which can be in reciprocating displacement parallel to the linear ruler (2), and the slide block (3) is provided with a guide structure (5) which can be followed;
one end of the guide structure (5) is provided with a roller bearing (10) which keeps rolling contact with the linear ruler (2), and the other end is provided with a two-dimensional grating encoder (9);
under the detection state, the driving slide block (3) is displaced to drive the guide structure (5) to be linked, so that the two-dimensional grating encoder (9) draws a radial run-out curve and a circle center movement noncoincidence curve when the roller bearing (10) rolls on the linear ruler (2).
2. The roller bearing runout and center of circle motion profile sensing device of claim 1, wherein;
the guide structure (5) is perpendicular to the linear ruler (2) and is arranged above the sliding block (3).
3. The roller bearing runout and center of circle motion profile sensing device of claim 1 or 2, wherein;
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 runout and center of circle motion profile sensing device of claim 3, wherein;
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) and the linear ruler (2) in contact.
5. The roller bearing runout and center of circle motion profile sensing device of claim 4, wherein;
the guide block (501) is fixedly connected with a first convex block, the guide rod (502) is fixedly connected with a second convex block, one end of the elastic component (6) is connected with the first convex block, and the other end of the elastic component is connected with the second convex block.
6. The roller bearing runout and center of circle motion profile sensing device of claim 5, wherein;
the second bump is provided with an elasticity adjusting mechanism for driving the elastic component (6) to elastically deform.
7. The roller bearing runout and center of circle motion profile sensing device of claim 6, wherein;
elasticity adjustment mechanism adjusts pole (8) and locating piece (7) be connected with elastic component (6) including installing on the second lug, adjusts pole (8) and locating piece (7) threaded connection.
8. The roller bearing runout and center of circle motion profile sensing device of claim 1, wherein;
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);
a reading head (901) of a two-dimensional grating encoder is fixedly connected to the guide structure (5), and the reading head (901) of the two-dimensional grating encoder is in clearance fit with the two-dimensional grating (902).
9. The roller bearing runout and center of circle motion profile sensing device of claim 1, wherein;
the displacement mechanism is provided with a slide rail (4) which is connected with the slide block (3) in a sliding way, and the straightness of the slide rail (4) is not more than 1 mu m.
10. A method for detecting radial run-out and circle center movement curves of a roller bearing, which uses the roller bearing radial run-out and circle center movement curve detection device as claimed in any one of claims 1-9, and is characterized in that;
the detection method comprises the following steps:
step A: providing a roller bearing (10);
step A1: horizontally placing the roller bearing (10), fixing the inner ring of the roller bearing (10) on the guide structure (5), and contacting the outer ring of the roller bearing (10) with the side wall of the linear ruler (2);
step A2: synchronously acquiring a radial run-out curve of an outer ring of the roller bearing (10) and a non-coincident curve of the movement of the circle center of the inner ring;
step A2.1: acquiring a radial run-out curve of the outer ring of the roller bearing (10);
the driving slide 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 run-out curve of the outer ring of the roller bearing (10);
step A2.1.1: according to the curve change rule of step A2.1, P in the curve1The point occurring at the maximum radial displacement position of the outer ring, P2The value of the radial runout of the outer ring of the roller bearing (10) is calculated as P-P by taking the minimum radial displacement position of the outer ring into consideration1-P2；
Step A2.2: acquiring a non-coincident curve of the movement of the circle center of the inner ring of the roller bearing (10);
the driving slide block (3) drives the guide structure (5) to reciprocate at least twice parallel to the linear ruler (2), and the outer ring of the roller bearing (10) obtains a plurality of movement track curves of the centers of the inner rings of the non-coincident roller bearing (10) in the rolling process under the action of counterclockwise or clockwise play on the plumb bob plane;
step A2.2.1: according to the curve change rule of the step A2.2, the circle centers of the inner rings of the roller bearing shafts (10) move to be not coincident with the curve, and the distribution intervals of the curves deflect in the positive directionMaximum time A1When the curve and the reverse deflection are maximum A2The misalignment of the inner circle center motion misalignment curve of the roller bearing shaft (10) is calculated from the curves, wherein A is A1-A2。
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 true CN114543676A (en) | 2022-05-27 |
| CN114543676B CN114543676B (en) | 2023-07-25 |
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| 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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| 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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| CN113587817A (en) | 2021-11-02 |
| CN114543676B (en) | 2023-07-25 |
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