CN209399897U - Fine holes measurement of length needle in gemstone element spherical groove - Google Patents
Fine holes measurement of length needle in gemstone element spherical groove Download PDFInfo
- Publication number
- CN209399897U CN209399897U CN201920175854.1U CN201920175854U CN209399897U CN 209399897 U CN209399897 U CN 209399897U CN 201920175854 U CN201920175854 U CN 201920175854U CN 209399897 U CN209399897 U CN 209399897U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- measuring head
- cylinder boss
- spherical groove
- fine holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Fine holes measurement of length needle in a kind of gemstone element spherical groove, including shank and ball measuring head, the shank is cylindrical body, one end of the cylindrical body is equipped with a cylinder boss, the diameter of the cylinder boss is less than the diameter of the shank, positioning shaft shoulder is formed between shank end face and cylinder boss, the ball measuring head is equipped with a tangent plane, the tangent plane center is equipped with a cylinder blind hole, the diameter of the cylinder diameter of blind hole and cylinder boss coincide, and the ball measuring head is covered on cylinder boss and is adhesively fixed by cylinder blind hole.
Description
Technical field
The utility model relates to fields of measurement, and in particular to fine holes measurement of length in a kind of gemstone element spherical groove
Needle.
Background technique
In the gemstone element for being equipped with spherical groove, the spherical groove of many gemstone elements is provided with vertical fine holes,
Aperture≤0.10mm of usual this fine holes.In process, straight hole segment length tolerance≤0.01mm of this fine holes,
Thus measurement accuracy≤0.001mm can usually meet the precise measurement problem of the gemstone element straight hole segment length with spherical groove.
Such as using 50 times of horizontal projector's detections, measurement accuracy is 0.01mm or so, and being unable to reach measurement accuracy is 0.001mm straight hole section
The requirement of length detection, and be not suitable for production scene batch detection.It is for another example detected using digital display projector, since equipment itself is smart
The factors such as degree, reviewer's variation and visual custom influence, and in 0.003mm, be also unable to reach measurement accuracy is measurement error
The requirement of 0.001mm straight hole segment length detection, and be not suitable for batch detection.Also have using amesdial stylus and measure straight hole segment length
Degree, but amesdial stylus is structure as a whole, and measures end when measuring gemstone element, abrasion is very fast, seriously affects measurement
Entire measurement needle can only just be scrapped, enterprise's testing cost is caused to increase by precision, the first denier abrasion of measurement end.And due to one
The amesdial stylus of body structure is larger to the difficulty of processing of measuring head, it is difficult to guarantee measuring head surface roughness and size one
Cause property, every batch of measurement needle detection accuracy can be all severely impacted, and be unfavorable for the quality testing of gemstone element processing.
Summary of the invention
The purpose of this utility model is provided thin in a kind of gemstone element spherical groove for the corresponding deficiency of the prior art
The measurement needle of microcell length can reach measurement request and save material, be readily produced, but also be easily installed.
The purpose of this utility model is realized using following proposal: subtle hole length in a kind of gemstone element spherical groove
Measurement needle, including shank and ball measuring head, the shank is cylindrical body, and one end of the cylindrical body is equipped with a cylinder boss,
The diameter of the cylinder boss is less than the diameter of the shank, and positioning shaft shoulder, the circle are formed between shank end face and cylinder boss
Ball measuring head is equipped with a tangent plane, which is equipped with a cylinder blind hole, the cylinder diameter of blind hole and cylinder boss
Diameter coincide, and the ball measuring head is covered on cylinder boss and is adhesively fixed by cylinder blind hole.
The radius of a ball of the ball measuring head is less than the radius of a ball of spherical groove, and is greater than the radius of fine holes.
Ball measurement headgear on cylinder boss, the fit clearance of cylinder boss and ball measuring head is 0.01 ~
0.02mm。
The accuracy class of the ball measuring head is at least G10 grades.
The depth of the cylinder blind hole is greater than the length of the cylinder boss.
The cylinder boss top is provided with chamfering.
Due to using above-mentioned technology, the shank is cylindrical body, and one end of the cylindrical body is equipped with a cylinder boss, the circle
The diameter of column boss is less than the diameter of the shank, and positioning shaft shoulder is formed between shank end face and cylinder boss, and the ball is surveyed
It measures head and is equipped with a tangent plane, which is equipped with a cylinder blind hole, the diameter of the cylinder diameter of blind hole and cylinder boss
It coincide, the ball measuring head is covered on cylinder boss and is adhesively fixed by cylinder blind hole, when because ball measuring head is worn
When causing measuring accuracy not reach requirement, do not need to replace on entire measurement needle, it is only necessary to change completely new ball and survey
Head is measured, can continue to measure work, it is not only convenient and efficient, it is easily installed, testing cost is also greatly saved, even
The fine holes of different-diameter can be directed to, change the ball measuring head of different model to be detected.
The radius of a ball of the ball measuring head is less than the radius of a ball of spherical groove, and is greater than the radius of fine holes, guarantees institute
Spherical groove bottom can either be arrived at by stating ball measuring head, and being unlikely to can be through going inside fine holes.
Ball measurement headgear on cylinder boss, the fit clearance of cylinder boss and ball measuring head is 0.01 ~
0.02mm guarantees that cylinder boss can be closely bonded with ball measuring head and is fixed together.
The accuracy class of the ball measuring head is at least G10 grades, guarantees that measurement needle set has enough measuring accuracies.
The depth of the cylinder blind hole is greater than the length of the cylinder boss, can guarantee ball measuring head and cylinder boss
Assembly in place, not will receive interference, the tangent plane for being also beneficial to ball measuring head is bonded with the shaft shoulder of shank, in measuring head blind hole
When hole wall gluing is Nian Jie with the cylindrical surface of cylinder boss, is provided for extra glue and allow bit space.
The cylinder boss top is provided with chamfering, plays guiding and positioning function, convenient for assembly.
Fine holes measurement of length needle can reach measurement request and save material in the gemstone element spherical groove
Material, is readily produced, but also be easily installed and safeguard, has greatly reduced measurement cost, in the quality inspection of gemstone element processing
Important function is played in survey.
Detailed description of the invention
Fig. 1 is the structural exploded view of the utility model；
Fig. 2 is the structure chart of the utility model；
Fig. 3 is the detecting state figure of the utility model.
In figure, 1. shanks, 2. ball measuring heads, 3. cylinder boss, 4. shaft shoulders, 5. tangent planes, 6. cylinder blind holes, 7. measurements
Needle tip, 8. sapphire substrates, 9. gemstone elements, 10. spherical grooves, 11. fine holes.
Specific embodiment
Referring to Fig. 1 to Fig. 3, fine holes measurement of length needle in a kind of gemstone element spherical groove, including shank 1 and ball
Measuring head 2, the accuracy class of the ball measuring head 2 are at least G10 grades, and the ball measuring head 2 can use diamond material,
Stainless steel material, or other hard materials can be used to make.The shank 1 is cylindrical body, and one end of the cylindrical body is set
There is a cylinder boss 3, which is provided with chamfering, and the diameter of the cylinder boss 3 is less than the straight of the shank 1
Diameter forms positioning shaft shoulder 4 between 1 end face of shank and cylinder boss 3, the ball measuring head 2 is equipped with a tangent plane 5, this cuts flat with
5 center of face is equipped with a cylinder blind hole 6, and the diameter of the cylinder blind hole 6 and the diameter of cylinder boss 3 coincide, the cylinder blind hole 6
Depth is greater than the length of cylinder boss 3.The ball measuring head 2 is by the way that 6 sets of cylinder blind hole on cylinder boss 3 and bonding is solid
Fixed, the fit clearance of the cylinder boss 3 and ball measuring head 2 is 0.01 ~ 0.02mm.The radius of a ball of the ball measuring head 2 is small
In the radius of a ball of spherical groove 10, and it is greater than the radius of fine holes 11.
Method using 11 length of fine holes in measurement needle measurement 9 spherical groove 10 of gemstone element is as follows:
1. zeroing: adjustment measurement pin position contacts ball measuring head 2 with 8 surface of sapphire substrate, makes amesdial indicator
Zero.
2. measurement: gemstone element 9 being placed on 8 surface of sapphire substrate, the measurement needle is vertically then put into jewel
In the spherical groove 10 of element 9, it is overlapped the axial line of the measurement needle and the axial line of the spherical groove 10 of gemstone element 9, is made
Measurement needle tip 7 falls into the bottommost of 9 spherical groove 10 of gemstone element, and the numerical value that amesdial is shown at this time is H2.
Measurement needle tip 7 is also fallen into fine holes 11 while fall into the bottommost of spherical groove 10, measurement needle tip 7 with
The distance that the top of fine holes 11 generates is H1.
As can be seen that length H=H1+H2 of fine holes 11, i.e. the length H with the show value H2 of amesdial than fine holes 11
Less than normal, numerical value less than normal is H1.
3. error calculation: cellular products aperture D influences the length H of the measurement needle measurement fine holes error generated as follows:
Note: H1 is calculated by following equation:
Wherein, SR is the radius of ball measuring head, and D is cellular products aperture, in this embodiment, ball measuring head 2
Radius SR is 0.90mm, and cellular products aperture D is 0.05 ~ 0.10mm.
As can be seen from the above table using the mistake of subtle hole length in the detected value of the measurement needle and gemstone element spherical groove
Difference is up to 0.00139mm less than normal.Therefore, we carry out the following revision of the convention to the data of detected value:
In this way, we just solve the problems, such as the precise measurement of subtle hole length in gemstone element spherical groove.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, it is clear that this field
Technical staff various modification and variations can be carried out to the utility model without departing from the spirit and scope of the utility model.This
Sample, if these modifications and variations of the present invention belong to the claims of the present invention and its equivalent technology range it
Interior, then the utility model is also intended to include these modifications and variations.
Claims (6)
1. fine holes measurement of length needle in a kind of gemstone element spherical groove, it is characterised in that: surveyed including shank (1) and ball
Measure head (2), the shank (1) is cylindrical body, and one end of the cylindrical body is equipped with a cylinder boss (3), the cylinder boss (3) it is straight
Diameter is less than the diameter of the shank (1), forms positioning shaft shoulder (4) between shank (1) end face and cylinder boss (3), the ball
Measuring head (2) is equipped with a tangent plane (5), which is equipped with a cylinder blind hole (6), the diameter of the cylinder blind hole (6)
It coincide with the diameter of cylinder boss (3), the ball measuring head (2) is covered on cylinder boss (3) and viscous by cylinder blind hole (6)
Connect fixation.
2. fine holes measurement of length needle in the gemstone element spherical groove according to claim 1, it is characterised in that: institute
The radius of a ball for stating ball measuring head (2) is less than the radius of a ball of spherical groove (10), and is greater than the radius of fine holes (11).
3. fine holes measurement of length needle in gemstone element spherical groove according to claim 1, it is characterised in that: institute
Ball measuring head (2) to be stated to cover on cylinder boss (3), the fit clearance of cylinder boss (3) and ball measuring head (2) is 0.01 ~
0.02mm。
4. fine holes measurement of length needle in gemstone element spherical groove according to claim 1, it is characterised in that: institute
The accuracy class for stating ball measuring head (2) is at least G10 grades.
5. fine holes measurement of length needle in the gemstone element spherical groove according to claim 1, it is characterised in that: institute
The depth for stating cylinder blind hole (6) is greater than the length of the cylinder boss (3).
6. fine holes measurement of length needle in the gemstone element spherical groove according to claim 1, it is characterised in that: institute
It states cylinder boss (3) top and is provided with chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920175854.1U CN209399897U (en) | 2019-02-01 | 2019-02-01 | Fine holes measurement of length needle in gemstone element spherical groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920175854.1U CN209399897U (en) | 2019-02-01 | 2019-02-01 | Fine holes measurement of length needle in gemstone element spherical groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209399897U true CN209399897U (en) | 2019-09-17 |
Family
ID=67899227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920175854.1U Active CN209399897U (en) | 2019-02-01 | 2019-02-01 | Fine holes measurement of length needle in gemstone element spherical groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209399897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797921A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Measuring needle for measuring angle of small micropore of blade |
-
2019
- 2019-02-01 CN CN201920175854.1U patent/CN209399897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797921A (en) * | 2019-11-13 | 2021-05-14 | 中国航发南方工业有限公司 | Measuring needle for measuring angle of small micropore of blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105571461A (en) | Accuracy measurement method for precision tapered hole | |
| CN203216434U (en) | Meter used for measuring depth of step hole | |
| CN205209415U (en) | Accurate taper hole NULL device | |
| CN209399897U (en) | Fine holes measurement of length needle in gemstone element spherical groove | |
| CN106403756B (en) | A kind of measuring device, taper plug gauge fixture and the taper ring-ga(u)ge fixture of long tubing taper thread | |
| CN102003931B (en) | Comprehensive detection method and device of tool tapered handle (7:24) | |
| CN207113777U (en) | A kind of eyeglass outside diameter measuring tool | |
| CN104482831A (en) | High-accuracy in-hole system slot width and depth measurement method | |
| CN204730792U (en) | A kind of hand-held internal diameter guide rail conical surface measurement mechanism | |
| CN207585505U (en) | A kind of verticality detector | |
| CN207423023U (en) | Universal protractor | |
| CN108253915B (en) | Calibration method | |
| CN205300473U (en) | Mar measuring apparatu | |
| CN202532120U (en) | Support | |
| CN211783223U (en) | Micrometer for measuring pitch of holes | |
| CN207703098U (en) | A kind of taper pin dimension measuring device | |
| CN107388924A (en) | A kind of taper pin dimension measuring device and measuring method | |
| CN209116910U (en) | A kind of multi-functional form and position error measurement instrument | |
| CN107990813A (en) | The detection method of shaft end rectangle keyway plane symmetry site error | |
| KR101528036B1 (en) | vernier calipers | |
| CN207688764U (en) | One kind is for measuring the externally threaded special measurement ring gauge of graphite electrode nipple circular cone | |
| CN106959090B (en) | A kind of detection pen measuring flat gauge head plane parallelism and its detection method | |
| CN101876522B (en) | Method for measuring straight-section length of oil groove tiny hole of gem element | |
| CN205957844U (en) | Measure bridge plate of position accuracy between prism guide rail and dovetail guide rail | |
| CN216205995U (en) | Self-centering hole position and groove size measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |