CN102252580B - Method for measuring outside-diameter nominal dimensional deviation of bearing outer ring - Google Patents
Method for measuring outside-diameter nominal dimensional deviation of bearing outer ring Download PDFInfo
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- CN102252580B CN102252580B CN201110175999XA CN201110175999A CN102252580B CN 102252580 B CN102252580 B CN 102252580B CN 201110175999X A CN201110175999X A CN 201110175999XA CN 201110175999 A CN201110175999 A CN 201110175999A CN 102252580 B CN102252580 B CN 102252580B
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- place kick
- outer ring
- bearing outer
- calibrated bolck
- measuring
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Abstract
The invention relates to a method for measuring an outside-diameter nominal dimensional deviation of a bearing outer ring. A measuring device consists of a first positioning ball (1), a positioning sleeve (2), a compressed spring (3), a cover plate (4), a measuring instrument (5), a measuring bar (6), an equalizing bar (7), a second positioning ball (8), a limiting sleeve (9) and a radial moving and positioning ball (10). The standard collation is based on the expression: h= r-1/2(4r<2>-C<2>)<1/2>; a first standard block (11), a second standard block (12) and a third standard block (13) are provided; and an original value is obtained. The space between two points where the first positioning ball and the second positioning ball are in contact with the bearing outer ring is chordal length of the bearing outer ring with an outside diameter of 2r, and the height difference (h) which is formed by a straight line between the radial moving and positioning ball and a contact point on the bearing outer ring and a connecting line of the space between the two points is chordal height of the bearing outer ring with the outside diameter of 2r, therefore absolute value difference of a measuring value and the original value is obtained, i.e. the deviation of the outside-diameter nominal dimensional of the bearing outer ring.
Description
Technical field
The invention belongs to the bearing measuring technical field, refer more particularly to a kind of measuring method of bearing outer ring external diameter nominal size deviation.
Background technology
Bearing for big specification; Slide calliper rule or outside micrometer are adopted in the measurement of its outer ring external diameter nominal size deviation usually; Each item performance index that the measuring accuracy of bearing outer ring external diameter nominal size deviation and accuracy are directly connected to the finished product bearing also are related to the tolerance on fit that replaces the spare parts mutually with bearing outer ring.
The measuring accuracy of slide calliper rule is lower.The volume of outside micrometer is bigger, needs two people to cooperate completion during measurement, and labor capacity is bigger, and work efficiency is lower.
The nominal size of bearing outer ring external diameter representes that with 2r wherein r is the radius of bearing outer ring.
Summary of the invention
For addressing the above problem; The invention provides a kind of measuring method of bearing outer ring external diameter nominal size deviation; This measuring method can improve the measurement accuracy and the degree of accuracy of bearing outer ring external diameter nominal size; And can improve the work efficiency of measurement, the employed measurement mechanism of measuring method has simple in structure, is prone to the characteristics of adjustment.
For realizing the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of measuring method of bearing outer ring external diameter nominal size deviation, the nominal size of the measured bearing outer ring external diameter in this measuring method is set at 2r, and r is the radius of measured bearing outer ring; Said measuring method comprises measurement mechanism, benchmark check and correction and measuring process three partial contents, and this three partial contents division is following:
1. measurement mechanism forms according to " confirming one section circular arc at 3 " principle design; Measurement mechanism includes first place kick, locating sleeve, stage clip, cover plate, measurement instrument, measuring staff, balancing stand, second place kick, stop collar and moves radially place kick; The symcenter of balancing stand is provided with through hole; The said through hole of the two end distances center of balancing stand has the internal thread hole of equidistance C/2; Distance is C between two said internal thread holes at balancing stand two ends; Said internal thread hole is through stepped bolt or connect first place kick or connect second place kick, and the diameter of first place kick equals the diameter of second place kick, when first place kick and second place kick are fixed on the said internal thread hole at balancing stand two ends through said stepped bolt with the adjustment cover; Line between two lowermost end points of first place kick and second place kick and balancing stand keep being parallel to each other, thereby and the adjustment nested structure size that is enclosed within the middle of each said stepped bolt equates to guarantee said being parallel to each other; Cross-under has measuring staff in the said through hole of balancing stand; The lower end of measuring staff is connected with and can moves radially place kick with what measuring staff moved up and down through stop collar; The upper end of measuring staff is fixed on the balancing stand through locating sleeve and cover plate behind the configuration stage clip; Measurement instrument is screwed in the center pit of cover plate; End in contact on the gauge head of measurement instrument and the measuring staff; The diameter that moves radially place kick equals the diameter of first place kick or the diameter of second place kick, and two lowermost end points that move radially place kick lowermost end point and first place kick and second place kick have formed 3 points of the one section circular arc that coexists, and the line that moves radially between two lowermost end points of place kick lowermost end point and first place kick and second place kick has formed difference in height h.
2. before using said measurement mechanism, come according to the external diameter 2r of measured bearing outer ring measurement mechanism is carried out the benchmark check and correction, benchmark is proofreaded with h=r-1/2 (4r
2-C
2)
1/2Be as the criterion, the height value of first calibrated bolck and the 3rd calibrated bolck is definitely equal, then the second calibrated bolck height=first calibrated bolck height+h; Be placed in first calibrated bolck, second calibrated bolck, the 3rd calibrated bolck on the workbench according to the order of sequence; Wherein the center distance of first calibrated bolck and the 3rd calibrated bolck will satisfy said C; Second calibrated bolck places the centre of first calibrated bolck and the 3rd calibrated bolck; With first place kick in the measurement mechanism that assembles be placed on first calibrated bolck or the 3rd calibrated bolck, second place kick is placed on the 3rd calibrated bolck or first calibrated bolck, move radially place kick is placed on second calibrated bolck; This moment, measuring staff moved down with moving radially the sagging of place kick; The benchmark readout of end in contact postscript record measurement instrument on measurement instrument gauge head and measuring staff, this benchmark readout is labeled as original value.
3. the measurement mechanism after the benchmark check and correction is placed the external diameter end face of measured bearing outer ring; Be the chord length of the measured bearing outer ring of 2r apart from equaling external diameter between two relatively-stationary first place kick and second place kick contact with the measured bearing outer ring 2; The formed difference in height h of line that moves radially distance between horizontal line and of place kick and measured bearing outer ring contact point at said 2 equals the action that external diameter is the measured bearing outer ring of 2r; This moment recording measuring instrument the measurement readout; This measurement readout is labeled as measured value, and the difference of the absolute value of measured value and original value is the deviation of bearing outer ring external diameter nominal size, so far accomplishes measuring process.
Said measurement instrument or dial gauge or clock gauge are if the measuring accuracy of its measuring method is 0.01mm during dial gauge, if the measuring accuracy of its measuring method is 0.001mm during clock gauge.
Owing to adopt technical scheme as stated, the present invention has following good effect:
1, measurement mechanism of the present invention has simple in structurely, light, and operating personnel can measure easily and efficiently.
2, measuring staff reduces the measuring error of measurement mechanism because the position-limiting action of stage clip can keep excellent contact with the gauge head of measurement instrument.
3, first place kick and second place kick and move radially place kick steel part is can also to adopt silicon nitride material to process except that adopting are with the overall weight of reduction measurement mechanism, the serviceable life that the superior anti-wear performance of silicon nitride can improve measurement mechanism greatly.
4, the locating sleeve in the measurement mechanism, cover plate, measuring staff, balancing stand and stop collar can adopt aluminum alloy materials to process; Aluminium alloy is not only in light weight, good toughness; And rigidity and mechanical property all can satisfy the request for utilization of measurement mechanism, can further reduce the overall weight of measurement mechanism.
5, balancing stand can arbitrarily extend to regulate distance between first place kick and second place kick, can measure larger sized bearing outside diameter nominal size deviation.
6, if the dial gauge that measurement mechanism is used changes clock gauge into, can make the measuring accuracy of measurement mechanism bring up to 0.001mm from 0.01mm.
Description of drawings
Fig. 1 is a measurement mechanism structural representation of the present invention;
Fig. 2 is a benchmark check and correction synoptic diagram of the present invention.
Among the above-mentioned figure: 1-first place kick; The 2-locating sleeve; The 3-stage clip; The 4-cover plate; The 5-measurement instrument; The 6-measuring staff; The 7-balancing stand; 8-the second place kick; 9-stop collar; 10-move radially place kick; 11-first calibrated bolck; 12-second calibrated bolck; 13-the 3rd calibrated bolck.
Embodiment
The present invention is a kind of measuring method of bearing outer ring external diameter nominal size deviation, and the nominal size of measured bearing outer ring external diameter is set at 2r, and r is the radius of measured bearing outer ring.
Measuring method of the present invention comprises measurement mechanism, benchmark check and correction and measuring process three partial contents, and this three partial contents division is following:
In conjunction with Fig. 1; Measurement mechanism forms according to " confirming one section circular arc at 3 " principle design; Measurement mechanism includes first place kick 1, locating sleeve 2, stage clip 3, cover plate 4, measurement instrument 5, measuring staff 6, balancing stand 7, second place kick 8, stop collar 9 and moves radially place kick 10; The symcenter of balancing stand 7 is provided with through hole; The said through hole of the two end distances center of balancing stand 7 has the internal thread hole of equidistance C/2; Distance is C between two said internal thread holes at balancing stand 7 two ends; Said internal thread hole equals the diameter of second place kick 8 through stepped bolt or the diameter that connects first place kick 1 or connect second place kick, 8, the first place kick 1, when first place kick 1 and second place kick 8 are fixed on the said internal thread hole at balancing stand 7 two ends through said stepped bolt with the adjustment cover; Line between two lowermost end points of first place kick 1 and second place kick 8 and balancing stand 7 keeps being parallel to each other, thereby and the adjustment nested structure size that is enclosed within the middle of each said stepped bolt equates to guarantee said being parallel to each other.
Above-mentioned first place kick 1 and second place kick 8 and move radially place kick 10 and except that adopting steel part, can also adopt silicon nitride material to process; To reduce the overall weight of measurement mechanism, the serviceable life that the superior anti-wear performance of silicon nitride can improve measurement mechanism greatly.
Above-mentioned balancing stand 7 can arbitrarily extend; Distance can be adjusted with measured bearing outer ring external diameter size between two said internal thread holes at balancing stand 7 two ends; Adjusted spacing should guarantee that be C/2 for C also will guarantee each said internal thread hole apart from the centre distance of said through hole; Apart from also obtaining corresponding adjustment, can measure larger sized bearing outside diameter nominal size deviation between first place kick that is fixed like this and second place kick.
Cross-under has measuring staff 6 in balancing stand 7 said through holes; The lower end of measuring staff 6 is connected with and can moves radially place kick 10 with what measuring staff 6 moved up and down through stop collar 9; The upper end of measuring staff 6 is fixed on the balancing stand 7 through locating sleeve 2 and cover plate 4 in configuration stage clip 3 backs; Measurement instrument 5 is screwed in the center pit of cover plate 4, end in contact on the gauge head of measurement instrument 5 and the measuring staff 6.
Above-mentioned measuring staff 6 can be delivered to tested numerical value on the measurement instrument 5, and the length of measuring staff 6 can be adjusted equally, to guarantee that stage clip 3 is in compacted all the time in the measuring process.Measuring staff 6 reduces the measuring error of measurement mechanism because the position-limiting action of stage clip 3 can keep excellent contact with the gauge head of measurement instrument 5.
Above-mentioned locating sleeve 2 is fixed on the balancing stand 7, and the internal diameter of locating sleeve 2 and measuring staff 2 diameters are complementary, and make moving up and down of measuring staff 2 more accurate.
Above-mentioned stage clip 3 is in impaction state all the time in measuring process, to guarantee to move radially the internal diameter end face that the measured bearing inner ring is close in place kick 10.
Above-mentioned cover plate 4 is used for measurement instrument 5 is connected in the locating sleeve 2, and makes stage clip 3 be in impaction state.
The structure of above-mentioned said adjustment cover and the structural similarity of stop collar 9.
Locating sleeve 2 in the above-mentioned measurement mechanism, cover plate 4, measuring staff 6, balancing stand 7 and stop collar 9 can adopt aluminum alloy materials to process; Aluminium alloy is not only in light weight, good toughness; And rigidity and mechanical property all can satisfy the request for utilization of measurement mechanism, can further reduce the overall weight of measurement mechanism.
Can find out through above-mentioned analysis: measurement mechanism has simple in structure, light, and operating personnel can measure easily and efficiently.
The diameter that moves radially place kick 10 equals the diameter of first place kick 1 or the diameter of second place kick 8; Two lowermost end points that move radially place kick 10 lowermost end points and first place kick 1 and second place kick 8 have formed 3 points of the one section circular arc that coexists, and the line that moves radially between two lowermost end points of place kick 10 lowermost end points and first place kick 1 and second place kick 8 has formed difference in height h.
In conjunction with Fig. 2, before using measurement mechanism of the present invention, come according to the external diameter 2r of measured bearing outer ring measurement mechanism is carried out the benchmark check and correction, benchmark is proofreaded with h=r-1/2 (4r
2-C
2)
1/2Be as the criterion, the height value of first calibrated bolck 11 and the 3rd calibrated bolck 13 is definitely equal, then the second calibrated bolck height=first calibrated bolck height+h.
Be placed in first calibrated bolck 11, second calibrated bolck 12, the 3rd calibrated bolck 13 on the workbench according to the order of sequence; Wherein the center distance of first calibrated bolck 11 and the 3rd calibrated bolck 13 will satisfy said C; Second calibrated bolck 12 places the centre of first calibrated bolck 11 and the 3rd calibrated bolck 13; With first place kick 1 in the measurement mechanism that assembles be placed on first calibrated bolck 11 or the 3rd calibrated bolck 13, second place kick 8 is placed on the 3rd calibrated bolck 13 or first calibrated bolck 11, move radially place kick 10 is placed on second calibrated bolck 12; This moment, measuring staff 6 moved down with moving radially the sagging of place kick 10; The benchmark readout of end in contact postscript record measurement instrument 5 on measurement instrument 5 gauge heads and measuring staff 6, this benchmark readout is labeled as original value.
In conjunction with Fig. 1-2; Measurement mechanism after the benchmark check and correction is placed the external diameter end face of measured bearing outer ring; Be the chord length of the measured bearing outer ring of 2r apart from equaling external diameter between two relatively-stationary first place kick 1 and second place kick 8 contact with the measured bearing outer ring 2; The formed difference in height h of line that moves radially distance between horizontal line and of place kick 10 and measured bearing outer ring contact point at said 2 equals the action that external diameter is the measured bearing outer ring of 2r; This moment recording measuring instrument 5 the measurement readout; This measurement readout is labeled as measured value, and the difference of the absolute value of measured value and original value is the deviation of bearing outer ring external diameter nominal size, so far accomplishes measuring process.
Above-mentioned measurement instrument 5 or dial gauge or clock gauge are if the measuring accuracy of its measuring method is 0.01mm during dial gauge, if the measuring accuracy of its measuring method is 0.001mm during clock gauge.
Though what measuring method of the present invention was directed against is the deviation measurement of the external diameter nominal size of bearing outer ring, the present invention is suitable for the deviation of other torus external diameter equally and measures.
Claims (1)
1. the measuring method of a bearing outer ring external diameter nominal size deviation, the nominal size of the measured bearing outer ring external diameter in this measuring method is set at 2r, and r is the radius of measured bearing outer ring; Said measuring method comprises measurement mechanism, benchmark check and correction and measuring process three partial contents, and this three partial contents division is following:
1. measurement mechanism forms according to " confirming one section circular arc at 3 " principle design; Measurement mechanism includes first place kick (1), locating sleeve (2), stage clip (3), cover plate (4), measurement instrument (5), measuring staff (6), balancing stand (7), second place kick (8), stop collar (9) and moves radially place kick (10); The symcenter of balancing stand (7) is provided with through hole; The said through hole of the two end distances center of balancing stand (7) has the internal thread hole of equidistance C/2; Distance is C between two said internal thread holes at balancing stand (7) two ends; Said internal thread hole is through stepped bolt or connect first place kick (1) or connect second place kick (8); The diameter of first place kick (1) equals the diameter of second place kick (8); When first place kick (1) and second place kick (8) were fixed on the said internal thread hole at balancing stand two ends through said stepped bolt with the adjustment cover, the line between two lowermost end points of first place kick (1) and second place kick (8) was parallel to each other with the balancing stand maintenance, thereby and be enclosed within that the middle adjustment nested structure size of each said stepped bolt is equal can to guarantee said being parallel to each other; Cross-under has measuring staff (6) in the said through hole of balancing stand (7); The lower end of measuring staff (6) is connected with and can moves radially place kick (10) with what measuring staff moved up and down through stop collar (9); The upper end of measuring staff (6) is fixed on the balancing stand through locating sleeve (2) and cover plate (4) in configuration stage clip (3) back; Measurement instrument (5) is screwed in the center pit of cover plate (4); The gauge head of measurement instrument (5) and measuring staff (6) are gone up end in contact; The diameter that moves radially place kick (10) equals the diameter of first place kick (1) or the diameter of second place kick (8); Two lowermost end points that move radially place kick (10) lowermost end point and first place kick (1) and second place kick (8) have formed 3 points of the one section circular arc that coexists, and the line that moves radially between two lowermost end points of place kick (10) lowermost end point and first place kick (1) and second place kick (8) has formed difference in height h;
2. before using said measurement mechanism, come according to the external diameter 2r of measured bearing outer ring measurement mechanism is carried out the benchmark check and correction, benchmark is proofreaded with h=r-1/2 (4r
2-C
2)
1/2Be as the criterion, the height value of first calibrated bolck (11) and the 3rd calibrated bolck (13) is definitely equal, then second calibrated bolck (12) calibrated bolck height+h highly=first; Be placed in first calibrated bolck (11), second calibrated bolck (12), the 3rd calibrated bolck (13) on the workbench according to the order of sequence; Wherein the center distance of first calibrated bolck (11) and the 3rd calibrated bolck (13) will satisfy said C; Second calibrated bolck (12) places the centre of first calibrated bolck (11) and the 3rd calibrated bolck (13); First place kick (1) in the measurement mechanism that assembles is placed on first calibrated bolck (11) or the 3rd calibrated bolck (13) are gone up, second place kick (8) is placed on the 3rd calibrated bolck (13) or first calibrated bolck (11) is gone up, move radially place kick (10) is placed on second calibrated bolck (12); Measuring staff this moment (6) is with sagging the moving down that moves radially place kick (10); Go up the benchmark readout that measurement instrument recorded in the end in contact postscript at measurement instrument (5) gauge head and measuring staff (6), this benchmark readout is labeled as original value;
3. the measurement mechanism after the benchmark check and correction is placed the external diameter end face of measured bearing outer ring; Be the chord length of the measured bearing outer ring of 2r apart from equaling external diameter between two relatively-stationary first place kick (1) and second place kick (8) contact with the measured bearing outer ring 2; The formed difference in height h of line that moves radially distance between horizontal line and of place kick (10) and measured bearing outer ring contact point at said 2 equals the action that external diameter is the measured bearing outer ring of 2r; The measurement readout of recording measuring instrument this moment (5); This measurement readout is labeled as measured value; The difference of the absolute value of measured value and original value is the deviation of bearing outer ring external diameter nominal size, so far accomplishes measuring process.
2, the measuring method of bearing outer ring external diameter nominal size deviation according to claim 1; It is characterized in that: said measurement instrument (5) or dial gauge or clock gauge; If the measuring accuracy of its measuring method is 0.01mm during dial gauge, if the measuring accuracy of its measuring method is 0.001mm during clock gauge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110175999XA CN102252580B (en) | 2011-06-28 | 2011-06-28 | Method for measuring outside-diameter nominal dimensional deviation of bearing outer ring |
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|---|---|---|---|
| CN201110175999XA CN102252580B (en) | 2011-06-28 | 2011-06-28 | Method for measuring outside-diameter nominal dimensional deviation of bearing outer ring |
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| CN102252580A CN102252580A (en) | 2011-11-23 |
| CN102252580B true CN102252580B (en) | 2012-11-28 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278932A (en) * | 2011-06-28 | 2011-12-14 | 洛阳轴研科技股份有限公司 | Method for measuring deviation of nominal size of bore diameter of bearing inner ring |
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| CN108680102A (en) * | 2018-04-16 | 2018-10-19 | 中国航发哈尔滨轴承有限公司 | A kind of mutual difference measurements tooling of bearing steel ball |
| CN108680133B (en) * | 2018-05-15 | 2020-11-10 | 界首市皖俊轴承有限公司 | Bearing outer ring measuring device and method |
| CN113551581B (en) * | 2021-07-16 | 2023-07-28 | 广东中质检测技术有限公司 | Direct-reading type electric power large-caliber pipeline inner diameter measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61128102A (en) * | 1984-11-27 | 1986-06-16 | Mitsubishi Plastics Ind Ltd | Inside diameter of pipe measuring apparatus |
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| CN2519235Y (en) * | 2002-01-10 | 2002-10-30 | 无锡纽思达科技有限公司 | Bearing internal diameter automatic measuring apparatus |
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| DE102005029735A1 (en) * | 2005-06-24 | 2006-12-28 | Elbert, Ralf, Dipl.-Ing. | Rotationally symmetric body e.g. test sample, dimension e.g. diameter, measuring machine for use in machine tool, has fixed stopper arranged on one of slides adjustably parallel to other slide, and supporting measuring bars with caliper |
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Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |
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Granted publication date: 20121128 Termination date: 20210628 |