CN205027336U - Ball socket of fixed steel ball in roundness measurement - Google Patents
Ball socket of fixed steel ball in roundness measurement Download PDFInfo
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- CN205027336U CN205027336U CN201520828949.0U CN201520828949U CN205027336U CN 205027336 U CN205027336 U CN 205027336U CN 201520828949 U CN201520828949 U CN 201520828949U CN 205027336 U CN205027336 U CN 205027336U
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Abstract
Ball socket of fixed steel ball in roundness measurement relates to and belongs to geometric sense measurement technical field. The utility model relates to a when solving the measurement of 732 inches following size steel ball circularity, the fixed not firm problem of present ball socket. Ball socket of fixed steel ball in roundness measurement, this ball socket is the frustum shape, the frustum top is equipped with inside sunken circular cone groove, the symmetry is equipped with two platforms on the frustum waist of these circular cone groove both sides, the surface of two platforms is the segment of a circle and perpendicular with the axis of frustum. Two platforms are equivalent to has increased the absorption magnetic force to the steel ball for the ball socket has increased by two magnetic poles, fixed more firm when the steel ball is measured below 732 inches, makes measurement of efficiency obtain improving, the measurement in batches of being convenient for.
Description
Technical field
The utility model belongs to geometric measurement technology, particularly relates to the roundness measurement field in form tolerance.
Background technology
Steel ball is placed in ball-and-socket by the measurement of steel ball circularity usually, and steel ball and ball-and-socket as depicted in figs. 1 and 2, are then placed on magnetic force platform by socket arrangement, utilizes the magnetic force of magnetic force platform to be adsorbed in ball-and-socket by steel ball, then measures its circularity.According to the regulation of relevant criterion, need orthogonal by the equatorial plane of the centre of sphere is measured at two when measuring steel ball circularity, the roundness error using the maximal value in two sections measured value as tested steel ball.
In actual measurement, find when little 7/32 inch of the size of steel ball, when detecting steel ball circularity, the roundness error in same cross section changes greatly.Through carefully detecting, find that magnetic force platform is relatively little to the absorption affinity of steel ball, during measurement, the dynamometry of chaining pin self is greater than the absorption affinity of magnetic force platform to steel ball, causes steel ball fixing not firm, occurs the situation of measured value instability.
If use vacuum pump apparatus absorption steel ball, because vibrations when vacuum pump works can be incorporated in measurement result, the less use of this method.
If use bonding agent bonding steel ball and the ball-and-sockets such as glue, because the size of steel ball is less, bonding agent often adheres on the equatorial plane of steel ball, can affect measurement result.And usually need repeatedly to paste multiple steel ball when pasting, just can obtain a steel ball being applicable to measuring, measure efficiency relatively low, be not easy to carry out measure batch.In addition, the steel ball being stained with glue can not re-use scrapping process, can cause unnecessary waste like this.
Utility model content
When the utility model is the measurement in order to solve less than 7/32 inch size steel ball circularity, existing ball-and-socket fixes problem loosely, now provides the ball-and-socket of stationary balls in roundness measurement.
The ball-and-socket of stationary balls in roundness measurement, this ball-and-socket is frustum shape, frustum top is provided with the conical grooves 1 caved inward, the frustum waist of these conical grooves 1 both sides is arranged with two platforms 2, the surface of described two platforms 2 is arc and vertical with the axis of frustum, and the surface of described two platforms 2 and the distance on ball-and-socket top are 2.5mm to 3.5mm.
The surface of described two platforms 2 and the distance on ball-and-socket top are 3mm.
The ball-and-socket of stationary balls in roundness measurement described in the utility model, the platform of two specular is set in the both sides of ball-and-socket, be equivalent to add adsorption magnetic force to steel ball for ball-and-socket adds two magnetic poles, when measuring less than 7/32 inch steel ball, fixing more firm, no longer need bonding agent, it also avoid the vibration that vacuum pump work is introduced, measurement efficiency is improved, is convenient to measure batch.The ball-and-socket of stationary balls in roundness measurement described in the utility model, can also measure minimum dimension is 1/8 inch, i.e. the steel ball of 3.175mm specification.
Accompanying drawing explanation
Fig. 1 is the ball-and-socket schematic diagram described in background technology;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the socket arrangement schematic diagram of stationary balls in the roundness measurement described in embodiment one;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the schematic diagram of the magnetic line of force through the ball-and-socket described in background technology;
Fig. 6 is the schematic diagram through the magnetic line of force of the ball-and-socket of stationary balls in the roundness measurement described in embodiment one.
Embodiment
Embodiment one: illustrate present embodiment with reference to Fig. 3 to Fig. 6, the ball-and-socket of stationary balls in roundness measurement described in present embodiment, this ball-and-socket is frustum shape, frustum top is provided with the conical grooves 1 caved inward, the frustum waist of these conical grooves 1 both sides is arranged with two platforms 2, the surface of described two platforms 2 is arc and vertical with the axis of frustum, and the surface of described two platforms 2 and the distance on ball-and-socket top are 2.5mm to 3.5mm.
The ball-and-socket of stationary balls in roundness measurement described in present embodiment, the platform of two specular is set in the both sides of ball-and-socket, be equivalent to add adsorption magnetic force to steel ball for ball-and-socket adds two magnetic poles, when measuring less than 7/32 inch steel ball, fixing more firm, no longer need bonding agent, it also avoid the vibration that vacuum pump work is introduced, measurement efficiency is improved.
The ball-and-socket of stationary balls in roundness measurement described in the utility model, when practical application, is placed on ball-and-socket on magnetic force platform, and makes the long side direction of surface perpendicular to magnetic force platform of ball-and-socket two platforms, and then measures.Now two platforms of ball-and-socket two ends symmetry are equivalent to for ball-and-socket adds two magnetic poles, the magnetic line of force of these two magnetic poles can pass through steel ball, as shown in Figure 6, and then the adsorption magnetic force added accordingly steel ball, relative to the magnetic line of force by steel ball in the ball-and-socket in background technology, as shown in Figure 5, the steel ball measured by the utility model will be more firm by what adsorb.
Embodiment two: present embodiment is described further the ball-and-socket of stationary balls in the roundness measurement described in embodiment one, and in present embodiment, the surface of described two platforms 2 and the distance on ball-and-socket top are 3mm.
Claims (2)
1. the ball-and-socket of stationary balls in roundness measurement, it is characterized in that, this ball-and-socket is frustum shape, frustum top is provided with the conical grooves (1) caved inward, the frustum waist of this conical grooves (1) both sides is arranged with two platforms (2), the surface of described two platforms (2) is arc and vertical with the axis of frustum, and the described surface of two platforms (2) and the distance on ball-and-socket top are 2.5mm to 3.5mm.
2. the ball-and-socket of stationary balls in roundness measurement according to claim 1, it is characterized in that, the described surface of two platforms (2) and the distance on ball-and-socket top are 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520828949.0U CN205027336U (en) | 2015-10-23 | 2015-10-23 | Ball socket of fixed steel ball in roundness measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520828949.0U CN205027336U (en) | 2015-10-23 | 2015-10-23 | Ball socket of fixed steel ball in roundness measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205027336U true CN205027336U (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520828949.0U Active CN205027336U (en) | 2015-10-23 | 2015-10-23 | Ball socket of fixed steel ball in roundness measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205027336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248034A (en) * | 2016-07-22 | 2016-12-21 | 常州市润昌光电科技有限公司 | A kind of ultraprecise circularity frock is surveyed soon |
-
2015
- 2015-10-23 CN CN201520828949.0U patent/CN205027336U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248034A (en) * | 2016-07-22 | 2016-12-21 | 常州市润昌光电科技有限公司 | A kind of ultraprecise circularity frock is surveyed soon |
| CN106248034B (en) * | 2016-07-22 | 2019-01-04 | 常州市润昌光电科技有限公司 | A kind of ultraprecise circularity tooling is surveyed fastly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |