CN213748309U - Novel air gauge measuring head - Google Patents
Novel air gauge measuring head Download PDFInfo
- Publication number
- CN213748309U CN213748309U CN202023050992.9U CN202023050992U CN213748309U CN 213748309 U CN213748309 U CN 213748309U CN 202023050992 U CN202023050992 U CN 202023050992U CN 213748309 U CN213748309 U CN 213748309U
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- measuring
- throttling
- hole
- air
- air inlet
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- 239000000523 sample Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Abstract
The utility model discloses a novel air gauge head belongs to precision equipment technical field. The utility model discloses the gas that flows through the measuring link screw hole reaches the measuring aperture after passing through the measuring inlet hole, and is sprayed out through the nozzle at last, forms the air film between the measured piece and the gauge head; the gas flowing through the throttling connection threaded hole reaches the two throttling small holes after passing through the throttling air inlet hole, finally enters the air cavity, and also forms an air film between the measured part and the measuring head, so that the rigid contact between the measuring head and the measured part is avoided, the abrasion of the measuring head cannot be caused in the whole measuring process, and the measuring precision of the measuring head is ensured. The utility model has the advantages of measurement accuracy is high, simple structure, clean pollution-free, and the measurement process can not cause wearing and tearing to the gauge head, has fine market perspective.
Description
Technical Field
The utility model relates to a novel air gauge probe of low wearing and tearing, high accuracy belongs to precision equipment technical field.
Background
With the rapid development of the manufacturing industry and the rapid development of the high-end manufacturing field, the automation degree is continuously improved, the measuring accuracy of the measuring device determines the processing and manufacturing precision, and the measuring head of the pneumatic measuring instrument is mainly applied to form and position tolerance measurement of a connecting rod and other hole pieces. However, the existing air gauge measuring head has large air resistance and serious abrasion of the guide surface, so that the measuring result is not accurate enough.
Disclosure of Invention
In order to solve the problems, the H-shaped exhaust groove 6 for reducing air resistance and the throttling small hole 8 for reducing the abrasion of the measuring head are added on the measuring head; the measuring head is mainly used for measuring form and position tolerances of a connecting rod and other hole pieces, and an external air source is required to supply air to the measuring link threaded hole 1 and the throttling link threaded hole 9 respectively in the working state.
The technical scheme of the utility model is that: a novel low-abrasion and high-precision air gauge measuring head comprises a measuring link threaded hole 1, a measuring air inlet 2, an air cavity 3, a guide surface 4, a measuring small hole 5, an H-shaped air discharge groove 6, a nozzle 7, a throttling small hole 8, a throttling connection threaded hole 9 and a throttling air inlet 10, wherein the air cavity 3 and the H-shaped air discharge groove 6 are arranged on the guide surface 4 of the air gauge measuring head, and the measuring link threaded hole 1 is arranged at the bottom of the air gauge measuring head; one end of the small measuring hole 5 is communicated with the measuring air inlet 2, the axis of the small measuring hole 5 is vertical to the measuring air inlet 2, the other end of the small measuring hole is provided with a nozzle 7 which is positioned in the middle of the H-shaped exhaust groove 6, and the end surface of the nozzle is centrosymmetric relative to the axis of the measuring head; the measuring air inlet hole 2 is positioned at the center of a measuring head of the air gauge, the measuring link threaded hole 1 supplies air from the outside and is communicated with the measuring air inlet hole 2, and the central axes of the two holes are overlapped; the throttling air inlet hole 10 is positioned in the measuring head of the air gauge, the lower end of the throttling air inlet hole 10 is communicated with the throttling connection threaded hole 9, and the central axes of the two holes are overlapped; the throttling air inlet hole 10 is respectively communicated with the upper throttling small hole 8 and the lower throttling small hole 8, and the throttling small holes 8 are communicated with the air cavity 3.
Further, the terminal surface of nozzle 7 sinks 1 ~ 20 microns for spigot surface 4, can protect the nozzle not worn and torn.
Further, the utility model discloses in measure inlet port 2 branch all the way and be two tunnel measurement aperture 5, H type air discharge duct 6 corresponds and also is equipped with two sets ofly.
Further, the utility model discloses well throttle air inlet 10 has two the tunnel, throttle aperture 8 also has two sets ofly with air cavity 3, and H type air duct 6 and 3 groups of air cavity distribute at the 4 circumference of spigot surface in a staggered way, and the central angle between the adjacent structure is 90 degrees.
The utility model discloses a theory of operation:
the utility model supplies gas to the three paths of the measuring head, so that a rigid gas film is formed between the measuring head and the measured piece, and the measuring head is not directly contacted with the measured piece; the pipeline for supplying air to the measuring link threaded hole 1 is also connected with a display device for reading required measuring parameters; after the gas is supplied to the measuring head measuring link threaded hole 1 and the throttling link threaded hole 9, the measuring head is inserted into the connecting rod or the hole piece, and the diameter of the connecting rod or the hole piece can be accurately measured; when the diameter is measured in a stable state, the thickness of the gas film can not change theoretically by rotating the measuring head, but the thickness of the gas film fluctuates in the rotating process of the measuring head due to the manufacturing error of the connecting rod or the hole piece, and the numerical value of the display device is changed accordingly, so that the roundness of the connecting rod or the hole piece can be measured; the design of the throttling small hole 8 avoids the direct contact between the measuring head and the measured piece, so that the measuring head is not abraded.
The utility model discloses beneficial effect: the utility model discloses simple structure, clean pollution-free through the design of throttle aperture 8, has avoided the direct wearing and tearing of gauge head, has reduced the air lock of measurement process through the design of H type air discharge duct 6, has improved measurement accuracy.
Drawings
FIG. 1 is a cross-sectional view of a step of the present invention;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a cross-sectional view of the present invention;
fig. 4 is a cross-sectional view of the longitudinal section of the present invention;
in the figure: 1-measuring a link threaded hole, 2-measuring an air inlet hole, 3-an air cavity, 4 guide surfaces, 5 measuring small holes, 6H-shaped exhaust grooves and 7 nozzle end surfaces; 8, throttling small holes; 9 throttling connection threaded holes and 10 throttling air inlet holes.
Detailed Description
The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.
Example 1
As shown in fig. 1-4, a novel low-wear and high-precision air gauge measuring head comprises a measuring link threaded hole 1, a measuring air inlet 2, an air cavity 3, a guide surface 4, a measuring small hole 5, an H-shaped exhaust groove 6, a nozzle 7, a throttling small hole 8, a throttling connection threaded hole 9 and a throttling air inlet 10, wherein the air cavity 3 and the H-shaped exhaust groove 6 are arranged on the guide surface 4 of the air gauge measuring head, and the measuring link threaded hole 1 is arranged at the bottom; one end of the small measuring hole 5 is communicated with the measuring air inlet 2, the axis of the small measuring hole 5 is vertical to the measuring air inlet 2, the other end of the small measuring hole is provided with a nozzle 7 positioned in the middle of the H-shaped exhaust groove 6, the end surface of the nozzle is centrosymmetric with respect to the axis of the measuring head, and the end surface of the nozzle 7 slightly sinks relative to the guide surface 4, so that the nozzle can be protected; the measuring air inlet hole 2 is positioned at the center of a measuring head of the air gauge, the measuring link threaded hole 1 supplies air from the outside and is communicated with the measuring air inlet hole 2, and the central axes of the two holes are overlapped; the throttling air inlet hole 10 is positioned in the measuring head of the air gauge, the lower end of the throttling air inlet hole 10 is communicated with the throttling connection threaded hole 9, and the central axes of the two holes are overlapped; the throttling air inlet 10 is respectively communicated with an upper throttling small hole 8 and a lower throttling small hole 8, and the throttling small holes 8 are communicated with the air cavity 3; one path of the measuring air inlet 2 is branched into two paths of measuring small holes 5, and two groups of H-shaped exhaust grooves 6 are correspondingly arranged.
The throttling connection threaded holes 9 are symmetrically distributed at the bottom of the measuring head and are supplied with air from the outside, each throttling connection threaded hole 9 is communicated with a throttling air inlet hole 10 connected with the throttling connection threaded hole, each throttling air inlet hole 10 is communicated with two throttling small holes 8 and an air cavity 3, and when an external air source passes through the throttling small holes 8 and the air cavities 3, a rigid air film is formed between a measured piece and the measuring head, so that the measuring head is not in direct contact with the measured piece, and the guide surface 4 of the measuring head is not abraded.
In this embodiment, the overall height of the measuring head is 46mm, the diameter of the measuring head is 41mm, in a working state, the measuring head is inserted into the connecting rod or the hole piece, the diameter of the connecting rod can be measured, and the roundness of the connecting rod or the hole piece can be measured by rotating the measuring head through the display device; other parameters of the gauge head are as follows: the diameter of the measuring small hole 5 is 1mm, the diameter of the outer end face 7 of the nozzle is 4mm, the width of the H-shaped exhaust groove 6 is 2mm, the depth of the H-shaped exhaust groove is 2mm, the diameter of the measuring link threaded hole 1 is 8mm, the depth of the measuring link threaded hole is 10mm, and the diameter of the measuring link threaded hole 2 is 3 mm; the diameter of a throttling air inlet hole 10 is 3mm, the diameter of a throttling connection threaded hole 9 is 5mm, and the depth is 10 mm; measuring the height of the small hole 5 to be 23 mm; the height of the small throttling hole 8 close to the lower bottom surface is 14mm, the height of the small throttling hole 8 far from the lower bottom surface is 36mm, and the position of the throttling connection threaded hole 9 on the lower bottom surface is on the circumference with the diameter of 28 mm.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a novel air gauge probe which characterized in that: the pneumatic measuring instrument measuring head comprises a measuring link threaded hole (1), a measuring air inlet hole (2), an air cavity (3), a guide surface (4), a measuring small hole (5), an H-shaped exhaust groove (6), a nozzle (7), a throttling small hole (8), a throttling connecting threaded hole (9) and a throttling air inlet hole (10), wherein the air cavity (3) and the H-shaped exhaust groove (6) are arranged on the guide surface (4) of the pneumatic measuring instrument measuring head, and the measuring link threaded hole (1) is arranged at the bottom; one end of the small measuring hole (5) is communicated with the measuring air inlet hole (2), the axis of the small measuring hole (5) is vertical to the measuring air inlet hole (2), the other end of the small measuring hole is provided with a nozzle (7) which is positioned in the middle of the H-shaped exhaust groove (6), and the end face of the nozzle is centrosymmetric about the axis of the measuring head; the measuring air inlet (2) is positioned at the center of a measuring head of the pneumatic measuring instrument, the measuring link threaded hole (1) supplies air from the outside and is communicated with the measuring air inlet (2), and the central axes of the two holes are overlapped; the throttling air inlet hole (10) is positioned in the measuring head of the pneumatic measuring instrument, the lower end of the throttling air inlet hole (10) is communicated with the throttling connecting threaded hole (9), and the central axes of the two holes are overlapped; the throttling air inlet hole (10) is respectively communicated with the upper throttling small hole (8) and the lower throttling small hole (8), and the throttling small holes (8) are communicated with the air cavity (3).
2. A novel air gauge probe according to claim 1, wherein: the end face of the nozzle (7) sinks 1-20 microns relative to the guide face (4).
3. A novel air gauge probe according to claim 1, wherein: one path of the measuring air inlet hole (2) is branched into two paths of measuring small holes (5), and two groups of H-shaped exhaust grooves (6) are correspondingly arranged.
4. A novel air gauge probe according to claim 1, wherein: the throttling air inlets (10) are provided with two paths, the throttling small holes (8) and the air cavities (3) are also provided with two groups, the H-shaped exhaust grooves (6) and the air cavities (3) are distributed in a staggered mode in the circumferential direction of the guide surface (4), and the central angle between adjacent structures is 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050992.9U CN213748309U (en) | 2020-12-17 | 2020-12-17 | Novel air gauge measuring head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050992.9U CN213748309U (en) | 2020-12-17 | 2020-12-17 | Novel air gauge measuring head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213748309U true CN213748309U (en) | 2021-07-20 |
Family
ID=76835012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023050992.9U Expired - Fee Related CN213748309U (en) | 2020-12-17 | 2020-12-17 | Novel air gauge measuring head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213748309U (en) |
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2020
- 2020-12-17 CN CN202023050992.9U patent/CN213748309U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210720 Termination date: 20211217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |