CN101344370A - Measuring method for curvature radius of roller ball base level - Google Patents
Measuring method for curvature radius of roller ball base level Download PDFInfo
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- CN101344370A CN101344370A CNA200810120579XA CN200810120579A CN101344370A CN 101344370 A CN101344370 A CN 101344370A CN A200810120579X A CNA200810120579X A CN A200810120579XA CN 200810120579 A CN200810120579 A CN 200810120579A CN 101344370 A CN101344370 A CN 101344370A
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Abstract
The invention relates to a measurement method, in particular to the measurement method of curvature radius of a roller sphere base surface, the steps are as follows: 1. a taper angle of a positioning hole of a positioning fixture is the same as the taper angle of a tapered roller to be measured, a large-head aperture of the positioning hole is applicable to the middle diameter of a rolling way of the tapered roller to be measured; 2. the positioning hole is tentatively inserted and selected by adopting the tapered roller to be measured; 3. a steel ball which is matched with the large-head aperture of the positioning hole is arranged in the positioning hole used for measurement, thereby allowing a measuring head of a profile instrument to contact the highest point of the steel ball, the steel ball is taken out, and a small head of the tapered roller to be measured is inserted in the positioning hole, thereby allowing the measuring head of the profile instrument to be moved to the left outer bevel position of the spherical surface of the tapered roller to be measured and then starting the sphere base surface measurement to the right outer bevel position, a profile graph is obtained by measurement, the spherical surface depressions and the bevels at the both sides are removed, after that, the assessment is carried out, and the obtained SR value is the curvature radius of the tapered roller sphere base surface. The measurement method of the invention has the beneficial advantages that: the measurement precision of the curvature radius SR of the tapered roller sphere base surface is improved, the operation is simple and easy to operate, the measurement speed is fast, and the input cost is lower.
Description
Affiliated technical field
The present invention relates to measuring method, mainly is a kind of measuring method of curvature radius of roller ball base level.
Background technology
The size of taper roller ball basal plane radius-of-curvature SR directly influences the quality that contacts of taper roller ball basal plane and bearing inner race rib, and bearing is played crucial effects serviceable life.Bearing industry is to adopt model to check with light gap method to taper roller ball basal plane radius of curvature measurement means commonly used, promptly make corresponding radius-of-curvature model by the curvature radius of roller ball base level design size, during check the model curved surface is buckled on the roller ball basal plane, observes the degree of agreement of roller ball basal plane and model curved surface with light gap method.This measuring method can closely be determined curvature radius of roller ball base level with intending, and measurement result is more rough, and is less because of the surface of contact of roller ball basal plane, has depression in the middle of the ball basal plane, so this measuring method accuracy is not high, and the detection requirement of incompatible current bearing industry.In recent years, along with of the universal use of domestic and international roughness contourgraph at bearing industry, discovery can utilize the roughness contourgraph to realize the measurement of R value, but in actual measurement, find, because of there being depression in the middle of the roller ball basal plane, can't find the peak of roller ball basal plane, must be with visual observation ball basal plane peak, cause the measurement result of curvature radius of roller ball base level SR less than normal, in order to measure the accurate SR value of peak, must get the ball basal plane radius-of-curvature value of its result's maximal value to same roller through repeatedly measuring as this roller.But this measuring method is consuming time bigger, and human factor is more, the accuracy of measurement result, less stable.
Summary of the invention
Purpose of the present invention mainly is to overcome above-mentioned technical deficiency, and a kind of measuring method of curvature radius of roller ball base level is provided.
The technical solution adopted for the present invention to solve the technical problems.The measuring method of this curvature radius of roller ball base level, concrete steps are as follows:
1, Design Orientation anchor clamps: the cone angle of the pilot hole of positioning fixture is identical with taper roller cone angle to be measured, and the major part aperture of pilot hole and tapered roller raceway to be measured middle part diameter adapt; Before measuring taper roller basal plane radius-of-curvature to be measured, the major part pore size of pressing pilot hole on the positioning fixture is prepared the steel ball of a corresponding specification, and steel ball size is greater than the aperture, location;
When 2, measuring, adopt taper roller examination to be measured to insert and select pilot hole, when making the microcephaly of taper roller to be measured insert pilot hole, 1/2～2/3 of taper roller height to be measured falls into pilot hole, take out taper roller to be measured, place the front and back of roughness contourgraph to regulate on the worktable positioning fixture, make to measure to be in same vertical plane with pilot hole and contourgraph gauge head;
3, will put into the steel ball of the major part aperture of selected pilot hole coupling and measure, make contourgraph gauge head contact steel ball top, regulate the worktable front and back position, make contourgraph gauge head contact steel ball peak, take out steel ball after removing the contourgraph gauge head to the right with pilot hole; The microcephaly of taper roller to be measured is inserted in this pilot hole, the contourgraph gauge head moves to left, the contourgraph gauge head is moved to outside the taper roller sphere to be measured left side behind the chamfering place, beginning ball basal plane is measured to right outer chamfering place, record and evaluate after removing spherical recesses and both sides chamfering behind the contour pattern, gained SR value is this taper roller ball basal plane radius-of-curvature.
The pilot hole in the different apertures of identical cone angle is placed in the same positioning fixture.
Outer form cylindric of described positioning fixture.
The invention has the beneficial effects as follows: this measuring method has improved the measuring accuracy of taper roller ball basal plane radius-of-curvature SR greatly, and operation is simple, and measuring speed is fast, and input cost is lower.
Description of drawings
Fig. 1 is the structural representation when contourgraph is measured among the present invention;
Fig. 2 is the structural representation of locating piece among the present invention;
Fig. 3 is the A-A cut-open view of Fig. 2 among the present invention;
Fig. 4 is a taper roller structural representation to be measured among the present invention.
Description of symbols: roughness contourgraph 1, adjust cushion block 2, positioning fixture 3, pilot hole 3-1, taper roller 4 to be measured, contourgraph gauge head 5.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Mentality of designing of the present invention: itself can realize two-dimensional measurement the roughness contourgraph: operation about the oscilaltion of driving box and sensor chaining pin, but seesaw to such an extent that forward back adjusting worktable guarantees, at this feature, imagination is being regulated outfit roller ball radius surface measurement and positioning anchor clamps 3 on the worktable.For this reason, the cone angle different according to roller designs, makes special-purpose positioning fixture, cooperates steel ball to find out peak with positioning fixture, guarantees that the roller sphere is at the highest notch.
The measuring method of this curvature radius of roller ball base level, concrete steps are as follows:
1, Design Orientation anchor clamps 3 as shown in the figure: the cone angle of the pilot hole 3-1 of positioning fixture 3 is identical with taper roller 4 cone angles to be measured, and the major part aperture of pilot hole 3-1 and taper roller to be measured 4 middle raceway diameters adapt (aperture is about tested roller middle raceway diameter or is slightly larger than the middle part diameter); Before measuring taper roller 4 basal plane radius-of-curvature to be measured, the major part pore size of pressing pilot hole 3-1 on the positioning fixture 3 is prepared the steel ball of a corresponding specification, steel ball size is appropriate to be not less than the aperture, location, to be slightly larger than the aperture, location, can accurately locate and be convenient to the back, location and easily take out steel ball;
When 2, measuring, adopt taper roller 4 examinations to be measured to insert and select pilot hole 3-1, when making the microcephaly of taper roller 4 to be measured insert pilot hole 3-1,1/2～2/3 of taper roller 4 height to be measured fall into pilot hole 3-1, take out taper roller 4 to be measured, place the front and back of roughness contourgraph 1 to regulate on the worktable positioning fixture 3, make to measure to be in same vertical plane with pilot hole 3-1 and contourgraph gauge head 5;
3, will put into measurement pilot hole 3-1 with the steel ball that mate in the major part aperture of selected pilot hole 3-1, make contourgraph gauge head 5 contact steel ball tops, regulate the worktable front and back position, make contourgraph gauge head 5 contact steel ball peaks, remove contourgraph gauge head 5 backs to the right and take out steel ball (being sure not the running fix anchor clamps); The microcephaly of taper roller 4 to be measured is inserted among this pilot hole 3-1, contourgraph gauge head 5 moves to left, contourgraph gauge head 5 is moved to outside the taper roller to be measured 4 sphere left sides behind the chamfering place, beginning ball basal plane is measured to right outer chamfering place, record and evaluate after removing spherical recesses and both sides chamfering behind the contour pattern, gained SR value is this taper roller ball basal plane radius-of-curvature, and anchor clamps can carry out batch continuous coverage SR value after once regulating.
Because the tapered roller raceway cone angle is more concentrated, cone angle mostly is 3 °, 4 °, 8 ° etc. greatly, so when the Design Orientation anchor clamps, the pilot hole 3-1 in the different apertures of identical cone angle can be placed in the same positioning fixture 3 (as shown in Figure 3), selects for use when being convenient for measuring; Consider again simultaneously and drive positioning fixture when roller plugs easily in pilot hole, so become diameter to be 120mm, highly to be that 30mm's is cylindric the positioning fixture configuration design, to increase the deadweight of positioning fixture, positioning fixture skew when avoiding plugging roller, the configuration design of anchor clamps round pie was not only attractive in appearance but also be not easy to produce and collide with, and can also regulate the placement height of positioning fixture by adjusting cushion block 2.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1. the measuring method of a curvature radius of roller ball base level, it is characterized in that: concrete steps are as follows:
(1), Design Orientation anchor clamps (3): the cone angle of the pilot hole (3-1) of positioning fixture (3) is identical with taper roller to be measured (4) cone angle, and the major part aperture of pilot hole (3-1) and taper roller to be measured (4) middle raceway diameter adapt; Before measuring taper roller to be measured (4) basal plane radius-of-curvature, press positioning fixture (3) and go up the steel ball that the major part pore size of pilot hole (3-1) is prepared a corresponding specification, steel ball size is greater than the aperture, location;
When (2), measuring, adopt taper roller to be measured (4) examination to insert and select pilot hole (3-1), when making the microcephaly of taper roller to be measured (4) insert pilot hole (3-1), 1/2～2/3 of taper roller to be measured (4) height falls into pilot hole (3-1), take out taper roller to be measured (4), place the front and back of roughness contourgraph (1) to regulate on the worktable positioning fixture (3), make to measure to be in same vertical plane with pilot hole (3-1) and contourgraph gauge head (5);
(3), will put into measurement pilot hole (3-1) with the steel ball that mate in the major part aperture of selected pilot hole (3-1), make contourgraph gauge head (5) contact steel ball top, regulate the worktable front and back position, make contourgraph gauge head (5) contact steel ball peak, remove contourgraph gauge head (5) back to the right and take out steel ball; The microcephaly of taper roller to be measured (4) is inserted in this pilot hole (3-1), contourgraph gauge head (5) moves to left, contourgraph gauge head (5) is moved to outside taper roller to be measured (4) the sphere left side behind the chamfering place, beginning ball basal plane is measured to right outer chamfering place, record and evaluate after removing spherical recesses and both sides chamfering behind the contour pattern, gained SR value is this taper roller ball basal plane radius-of-curvature.
2. the measuring method of curvature radius of roller ball base level according to claim 1 is characterized in that: the pilot hole (3-1) in the different apertures of identical cone angle is placed in the same positioning fixture (3).
3. the measuring method of curvature radius of roller ball base level according to claim 1 and 2 is characterized in that: outer form cylindric of described positioning fixture (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810120579XA CN101344370B (en) | 2008-08-20 | 2008-08-20 | Measuring method for curvature radius of roller ball base level |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810120579XA CN101344370B (en) | 2008-08-20 | 2008-08-20 | Measuring method for curvature radius of roller ball base level |
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| CN101344370A true CN101344370A (en) | 2009-01-14 |
| CN101344370B CN101344370B (en) | 2010-07-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630104A (en) * | 2013-12-11 | 2014-03-12 | 甘肃海林中科科技股份有限公司 | Method for measuring curvature radius of spherical basal planes of tapered rollers |
| CN105300252A (en) * | 2015-11-24 | 2016-02-03 | 无锡威孚精密机械制造有限责任公司 | High-precision ball diameter testing tool |
| CN107449353A (en) * | 2017-09-12 | 2017-12-08 | 上海联合滚动轴承有限公司 | The measurement apparatus and measuring method of a kind of spherical base surface of tapered roller |
| CN109029208A (en) * | 2018-08-20 | 2018-12-18 | 中国航发哈尔滨轴承有限公司 | Taper roller end face radius measuring device and method |
| CN109737910A (en) * | 2019-03-25 | 2019-05-10 | 中国航发哈尔滨轴承有限公司 | A kind of method of determining taper roller large end face ball basal plane maximum gauge arc position |
| CN113295127A (en) * | 2020-02-21 | 2021-08-24 | 核工业理化工程研究院 | Method and device for measuring fillet radius at intersection of cylindrical surface and other curved surfaces or planes |
-
2008
- 2008-08-20 CN CN200810120579XA patent/CN101344370B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630104A (en) * | 2013-12-11 | 2014-03-12 | 甘肃海林中科科技股份有限公司 | Method for measuring curvature radius of spherical basal planes of tapered rollers |
| CN105300252A (en) * | 2015-11-24 | 2016-02-03 | 无锡威孚精密机械制造有限责任公司 | High-precision ball diameter testing tool |
| CN107449353A (en) * | 2017-09-12 | 2017-12-08 | 上海联合滚动轴承有限公司 | The measurement apparatus and measuring method of a kind of spherical base surface of tapered roller |
| CN107449353B (en) * | 2017-09-12 | 2019-07-30 | 上海联合滚动轴承有限公司 | A kind of measuring device and measurement method of spherical base surface of tapered roller |
| CN109029208A (en) * | 2018-08-20 | 2018-12-18 | 中国航发哈尔滨轴承有限公司 | Taper roller end face radius measuring device and method |
| CN109737910A (en) * | 2019-03-25 | 2019-05-10 | 中国航发哈尔滨轴承有限公司 | A kind of method of determining taper roller large end face ball basal plane maximum gauge arc position |
| CN113295127A (en) * | 2020-02-21 | 2021-08-24 | 核工业理化工程研究院 | Method and device for measuring fillet radius at intersection of cylindrical surface and other curved surfaces or planes |
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| Publication number | Publication date |
|---|---|
| CN101344370B (en) | 2010-07-14 |
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