CN210588441U - Pneumatic rotary seal separation structure for precision measurement - Google Patents
Pneumatic rotary seal separation structure for precision measurement Download PDFInfo
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- CN210588441U CN210588441U CN201921278482.1U CN201921278482U CN210588441U CN 210588441 U CN210588441 U CN 210588441U CN 201921278482 U CN201921278482 U CN 201921278482U CN 210588441 U CN210588441 U CN 210588441U
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Abstract
The utility model provides a pneumatic rotary seal separation structure for precision measurement, includes that the cover establishes fixed distribution ring on rotation axis, the rotation axis, is connected through support bearing between rotation axis and the fixed distribution ring. A group of axial air guide holes are arranged in the shaft wall of the hollow rotating shaft, the vertical air guide holes are provided with air inlet holes and air outlet holes, and the air outlet holes are connected to a measuring nozzle of the synchronous rotating honing head to realize the automatic measuring function; the fixed distribution ring inboard is opened annular groove, is equipped with two annular seal spare in the annular groove, separates through annular support frame between two annular seal spare, and annular inboard of annular seal spare is equipped with the wear-resisting bush of annular, forms annular gas groove between two annular seal spare and the wear-resisting bush of annular and annular support frame. The service life of the rotary seal chuck can be greatly prolonged by utilizing the wear-resistant lining structure, the effective control of online measurement of the size precision can be realized, the stable processing control of pneumatic measurement is further realized, and the processing size precision and the production efficiency of parts are finally improved.
Description
Technical Field
The utility model relates to an online precision measurement technical field of machining specifically relates to a pneumatic rotary seal separation structure for precision measurement.
Background
Along with the gradual perfection of the technical development and the application of precision measurement on a mass production line, the machining precision of a machined part needs to be further improved through the improvement of a measurement technology, and the market demand of high quality and high precision is met.
The pneumatic measuring instrument is mainly a tool for realizing on-line automatic measurement aiming at the size precision control of precision inner hole machining, and the measuring method is to convert a length signal into an air pressure change signal, convert the air signal into an electric signal through an air-electric converter (amplifier), and finally realize the effective control of the on-line machining measurement of the precision inner hole size precision, so the pneumatic measuring instrument is widely applied to the mechanical manufacturing industry.
When the air gauge is used for online measurement, the air gauge is connected with a processing machine through a structure for separating moving and static parts between the air gauge and the processing machine due to mechanical rotation in the mechanical processing process. The existing separation structure has the defects of poor sealing performance and the like, so that the phenomenon of premature wear and air leakage of a pneumatic sealing component is caused, the measurement precision of the size of an inner hole of a processed part is difficult to effectively control, and the phenomena of part processing precision control and batch waste on a mass production line are limited. Therefore, the application of the size precision on-line measurement rotation separation control technology is always the bottleneck of the size precision measurement control technology.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a pneumatic rotary seal separation structure for precision measurement to realize pneumatic measurement control technology's effective control, thereby promote machining precision and the production efficiency of being processed the part on the mass production line through improving sealing performance.
The utility model discloses a pneumatic rotary seal separation structure for precision measurement, which comprises a hollow rotary shaft, a fixed distribution ring sleeved on the rotary shaft, a support bearing connected between the rotary shaft and the fixed distribution ring,
a group of axial air guide holes are arranged in the shaft wall of the rotating shaft, the vertical air guide holes are provided with air inlet holes and air outlet holes, one ends of the air inlet holes and the air outlet holes are communicated with the air guide holes, and the other ends of the air inlet holes and the air outlet holes are communicated with the outside;
the annular groove is formed in the inner side of the fixed distribution ring, two annular sealing pieces are arranged in the annular groove, the two annular sealing pieces are separated through an annular supporting frame, a ceramic wear-resistant bushing is arranged on the inner side of the ring of each annular sealing piece, the ceramic wear-resistant bushing is arranged on the rotating shaft in an interference fit mode and rotates synchronously with the rotating shaft, and an annular air groove is formed between the two annular sealing pieces, the ceramic wear-resistant bushing and the annular supporting frame.
The utility model discloses a pneumatic rotary seal separation structure for precision measurement, ceramic stand wear and tear bush interference fit install on the rotation axis rather than synchronous revolution, annular seal spare fixed mounting is in the inboard ring channel of fixed distribution ring, form annular gas groove between two annular seal spare and ceramic stand wear and tear bush and the ring support frame, based on this structure, realize the process of sealed rotary fit distribution gas circuit between annular inboard and the ceramic stand wear bush of annular seal spare, can carry out stable atmospheric pressure transmission and transport through annular gas groove.
Preferably, the fixed distribution ring is provided with an air source interface, the annular support frame is provided with an air vent, the air source interface is communicated with the annular air groove through the air vent, the ceramic wear-resistant bush is provided with a round hole, and the air inlet is communicated with the annular air groove through the round hole.
Preferably, the annular sealing element is provided with a sealing cutting edge, and the sealing cutting edge is in contact sealing fit with the rotatable wear-resistant ceramic bushing. The gas conveying process of gas pressure sealing and wear resistance can be realized.
Preferably, the upper and lower ends of the rotating shaft are respectively provided with a bolt hole for connection.
Preferably, the fixed distribution ring is provided with a threaded hole for installation.
The utility model discloses a theory of operation: the pneumatic rotary seal separation structure for precision measurement is mainly characterized in that a pneumatic measurement device which is used for stably conveying pneumatic pressure of a rotary main shaft moving body and a fixed structure is used, a ceramic wear-resistant material bushing and an inlet wear-resistant sealing element are arranged to be sprayed to carry out a combined structure technical system, a wear-resistant stable processing control process of pneumatic measurement can be realized, the online measurement of dimensional accuracy is effectively controlled, and the processing dimensional accuracy and the production efficiency of processed parts on an automatic control production line are finally met.
The utility model has the advantages that: the product is suitable for manufacturing and processing equipment of mechanical equipment, particularly for effectively controlling the high-precision index of the online measurement of the precision inner hole processing process on domestic and foreign mass production lines, a spraying ceramic wear-resistant material bushing and an imported wear-resistant sealing part are applied to carry out a combined structure, a separation stable control structure of the precision measurement pneumatic rotary seal is realized, and finally, the application process of the pneumatic online measurement stable control on the mass production line is realized. The pneumatic rotary seal separation structure for precision measurement is mainly characterized in that a pneumatic measurement device which is used for stably conveying pneumatic pressure of a rotary main shaft moving body and a fixed structure is used, a ceramic wear-resistant material bushing and an inlet wear-resistant sealing element are arranged to be sprayed to carry out a combined structure technical system, a wear-resistant stable processing control process of pneumatic measurement can be realized, the online measurement of dimensional accuracy is effectively controlled, and the processing dimensional accuracy and the production efficiency of processed parts on an automatic control production line are finally met.
The utility model discloses a pneumatic rotary seal separation structure for precision measurement through improving sealing performance, has realized the effective control of pneumatic measurement control technique, reaches the measurement size precision and is less than or equal to 0.01, effectively promotes the machining precision and the improvement production efficiency of being processed the part on the mass production line.
Drawings
FIG. 1 is a schematic structural view of a pneumatic rotary seal separation structure for precision measurement;
fig. 2 is an enlarged view of a portion of the stationary distribution ring of fig. 1.
In the figure: 1-rotating shaft, 11-air guide hole, 12-air inlet hole, 13-air outlet hole, 14-bolt hole, 2-fixed distribution ring, 21-annular sealing element, 211-sealing cutting edge, 22-annular supporting frame, 221-air vent, 23-ceramic wear-resistant bush, round hole 231, 24-annular air groove, 25-air source interface, 26-threaded hole and 3-support bearing.
Detailed Description
Example 1:
as shown in figures 1 and 2, a pneumatic rotary seal separation structure for precision measurement comprises a rotary shaft 1, a fixed distribution ring 2 sleeved on the rotary shaft 1, a support bearing 3 connected between the rotary shaft 1 and the fixed distribution ring 2,
a group of axial air guide holes 11 are formed in the shaft wall of the hollow rotating shaft 1, the vertical air guide holes 11 are provided with air inlet holes 12 and air outlet holes 13, one ends of the air inlet holes 12 and the air outlet holes 13 are communicated with the air guide holes 11, and the other ends of the air inlet holes 12 and the air outlet holes 13 are communicated with the outside;
an annular groove is formed in the inner side of the fixed distribution ring 2, two annular sealing pieces 21 are arranged in the annular groove, the two annular sealing pieces 21 are separated through an annular supporting frame 22, a ceramic wear-resistant bushing 23 is arranged on the annular inner side of each annular sealing piece 21, the ceramic wear-resistant bushing 23 is arranged on the rotating shaft 1 in an interference fit mode and rotates synchronously with the rotating shaft, and an annular air groove 24 is formed between the two annular sealing pieces 21, the ceramic wear-resistant bushing 23 and the annular supporting frame 22.
Example 2:
as shown in figures 1 and 2, a pneumatic rotary seal separation structure for precision measurement comprises a rotary shaft 1, a fixed distribution ring 2 sleeved on the rotary shaft 1, a support bearing 3 connected between the rotary shaft 1 and the fixed distribution ring 2,
a group of axial air guide holes 11 are formed in the shaft wall of the hollow rotating shaft 1, the vertical air guide holes 11 are provided with air inlet holes 12 and air outlet holes 13, one ends of the air inlet holes 12 and the air outlet holes 13 are communicated with the air guide holes 11, and the other ends of the air inlet holes 12 and the air outlet holes 13 are communicated with the outside;
an annular groove is formed in the inner side of the fixed distribution ring 2, two annular sealing pieces 21 are arranged in the annular groove, the two annular sealing pieces 21 are separated through an annular supporting frame 22, a ceramic wear-resistant bushing 23 is arranged on the annular inner side of each annular sealing piece 21, the ceramic wear-resistant bushing 23 is arranged on the rotating shaft 1 in an interference fit mode and rotates synchronously with the rotating shaft, and an annular air groove 24 is formed between the two annular sealing pieces 21, the ceramic wear-resistant bushing 23 and the annular supporting frame 22.
The fixed distribution ring 2 is provided with an air source interface 25, the annular support frame 22 is provided with an air vent 221, the air source interface 25 is communicated with the annular air groove 24 through the air vent 221, the ceramic wear-resistant lining 23 is provided with a round hole 231, and the air inlet 12 is communicated with the annular air groove 24 through the round hole 231.
The annular sealing element 21 is provided with a sealing cutting edge 211, and the sealing cutting edge 211 is in contact sealing fit with the rotatable ceramic wear-resistant bushing 23.
The upper and lower ends of the rotating shaft 1 are respectively provided with a bolt hole 14 for connection.
The fixed distribution ring 2 is provided with mounting threaded holes 26.
Claims (5)
1. A pneumatic rotary seal separation structure for precision measurement is characterized by comprising a hollow rotary shaft (1), a fixed distribution ring (2) sleeved on the rotary shaft (1), the rotary shaft (1) and the fixed distribution ring (2) are connected through a support bearing (3),
a group of axial air guide holes (11) are formed in the shaft wall of the rotating shaft (1), air inlet holes (12) and air outlet holes (13) are formed in the vertical air guide holes (11), one ends of the air inlet holes (12) and the air outlet holes (13) are communicated with the air guide holes (11), and the other ends of the air inlet holes (12) and the air outlet holes (13) are communicated with the outside;
the inner side of the fixed distribution ring (2) is provided with an annular groove, two annular sealing elements (21) are fixedly arranged in the annular groove, the two annular sealing elements (21) are separated by an annular supporting frame (22), the annular inner side of each annular sealing element (21) is provided with an annular ceramic wear-resistant bushing (23), the ceramic wear-resistant bushings (23) are arranged on the rotating shaft (1) in an interference fit manner and rotate synchronously with the rotating shaft, and an annular gas groove (24) is formed between the two annular sealing elements (21), the ceramic wear-resistant bushings (23) and the annular supporting frame (22).
2. The pneumatic rotary seal separation structure for precision measurement according to claim 1, wherein the fixed distribution ring (2) is provided with an air source interface (25), the annular support frame (22) is provided with a vent hole (221), the air source interface (25) is communicated with the annular air groove (24) through the vent hole (221), the ceramic wear-resistant bushing (23) is provided with a circular hole (231), and the air inlet hole (12) is communicated with the annular air groove (24) through the circular hole (231).
3. The pneumatic rotary seal separation structure for precision measurement according to claim 2, wherein the annular seal member (21) is provided with a seal edge (211), and the seal edge (211) is in contact sealing engagement with the rotatable ceramic wear-resistant bushing (23).
4. The pneumatic rotary seal separation structure for precision measurement according to claim 1, wherein the upper and lower ends of the rotary shaft (1) are respectively provided with a pin hole (14) for connection.
5. The pneumatic rotary seal separation structure for precision measurement according to claim 1, wherein the fixed distribution ring (2) is provided with a threaded hole (26) for mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921278482.1U CN210588441U (en) | 2019-08-08 | 2019-08-08 | Pneumatic rotary seal separation structure for precision measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921278482.1U CN210588441U (en) | 2019-08-08 | 2019-08-08 | Pneumatic rotary seal separation structure for precision measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210588441U true CN210588441U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921278482.1U Active CN210588441U (en) | 2019-08-08 | 2019-08-08 | Pneumatic rotary seal separation structure for precision measurement |
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| Country | Link |
|---|---|
| CN (1) | CN210588441U (en) |
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2019
- 2019-08-08 CN CN201921278482.1U patent/CN210588441U/en active Active
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