CN216283100U - Quick measuring device of interior sphere size - Google Patents
Quick measuring device of interior sphere size Download PDFInfo
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- CN216283100U CN216283100U CN202122504020.0U CN202122504020U CN216283100U CN 216283100 U CN216283100 U CN 216283100U CN 202122504020 U CN202122504020 U CN 202122504020U CN 216283100 U CN216283100 U CN 216283100U
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Abstract
The utility model discloses a device for quickly measuring the size of an inner spherical surface, which comprises a shell (5), a positioning component, a sliding component and a measuring component, wherein the positioning component is arranged on the outer wall of the shell (5); the sliding assembly is arranged in the cavity of the shell (5) and can move up and down along the cavity of the shell (5); the measuring component is arranged at the top of the shell (5) and connected with the sliding component, and the sliding component drives the measuring component to measure the size of the inner spherical surface (9). The utility model can quickly and accurately position the center of the inner spherical surface (9), and can accurately measure the size of the inner spherical surface (9) by calculating after reading data through the dial indicator (4), thereby improving the detection precision of the engine parts (8) and ensuring the qualification rate of the engine parts (8); convenient to use, can remove at will, measurement accuracy is high, and the error is little.
Description
Technical Field
The utility model relates to the technical field of metering detection, in particular to a device for quickly measuring the size of an inner spherical surface.
Background
An aero-engine (aero-engine) is a highly complex and precise thermal machine, is used as the heart of an airplane, is not only the power for flying the airplane, but also an important driving force for promoting the development of aviation industry, and each important change in human aviation history is inseparable from the technical progress of the aero-engine.
After centuries of development, the aero-engine has developed into a mature product with extremely high reliability, and the aero-engine in use includes various types such as a turbojet/turbofan engine, a turboshaft/turboprop engine, a ramjet engine and a piston engine, and not only is the power of military and civil aircrafts, unmanned planes and cruise missiles for various purposes, but also the gas turbine developed by the aero-engine is widely used in the fields such as ground power generation, marine power, mobile power stations, natural gas and petroleum pipeline pump stations and the like.
In the 21 st century, the development of aero-engines is further accelerated, and a new significant revolution is brought to the field of human aviation. Traditional aircraft engines are developing into gear-driven engines, variable-cycle engines, multi-electric engines, intercooling regenerative engines and open-rotor engines, non-traditional pulse detonation engines, scramjet engines, turbine-based combination engines, solar power and fuel cell power and the like are also continuously maturing, the development of the engines enables future aircrafts to be faster, taller, farther, more economical and more reliable, can meet stricter environmental requirements, and enables hypersonic aircrafts, transoceand aircrafts and reusable shuttle aircrafts to be transported to and fro on the earth.
Chinese utility model patent that patent application number is 201821674581.7 discloses an interior sphere diameter measurement measuring tool, and this measuring tool includes the base, and the terminal surface of base is provided with the work piece fixing base, and the work piece fixing base comprises fixed bracing piece and movable measuring staff, and both are used in on the interior sphere of work piece, movable measuring staff is adjustable and fixed fixing on the base of bracing piece interval, fixed bracing piece one side is provided with the amesdial, be provided with the measuring head of extension on the amesdial, the measuring head can be moved between fixed bracing piece and movable measuring staff for measure the diameter of sphere in the work piece. But the measuring tool has the defect of large error in practical application.
In addition, the chinese utility model with patent application number 202120171102.5 discloses an inner spherical surface diameter and center detecting device, which comprises a measuring seat, a measuring rod, an upper measuring plate, a lower measuring plate, a dial indicator i and a dial indicator ii; a measuring seat is located on one side of the inner spherical surface of the workpiece to be measured, the measuring seat is a stepped hollow shaft with a large lower part and a small upper part, a measuring rod is installed in the measuring seat, and the measuring rod is suspended in an inner cavity of the measuring seat through a shaft shoulder; the lower measuring plate is fastened at the lower end of the measuring rod through a nut, the upper measuring plate assembled on the measuring rod extends out of the inner cavity of the measuring seat through the action of a compression spring II, and pin shafts are arranged between the upper measuring plate and the lower measuring plate at intervals; the upper part of the measuring seat is provided with a dial indicator I which is linked with the measuring rod through a compression spring I to measure the distance between the lower measuring plate and the spherical center of the workpiece to be measured; and the lower part of the measuring seat is provided with a dial indicator II for measuring the distance between the upper measuring plate and the spherical center of the workpiece to be measured. The device is not suitable for measuring the inner spherical part of which the diameter of the inner cavity of the aero-engine is less than 20mm and the included angle of the spherical center is less than 90 degrees.
As the parts of the aircraft engine, the inner spherical parts with the inner cavity diameter smaller than 20mm and the spherical center included angle smaller than 90-degree arc are more, and most of the parts require the position size of the distance from the spherical center to the end face. The measurement of the position size has great difficulty: 1. the projection inspection by adopting the projector cannot be measured because the light source is shielded; 2. three-coordinate detection is adopted, the interference of a measuring needle is caused by the small inner hole, the measurement cannot be carried out, and the deviation exists in the positioning of the spherical center because the included angle of the arc center is less than 90 degrees during the detection, and the detection error is large; 3. at present, no general measuring tool is used for checking the conditions. Therefore, in order to solve the problem of measuring the position and size from the center to the edge of the part, a special measuring tool needs to be designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a device for quickly measuring the size of an inner spherical surface, which comprises a shell, a positioning component, a sliding component and a measuring component, wherein the positioning component is arranged on the outer wall of the shell; the sliding assembly is arranged in the cavity of the shell and can move up and down along the cavity of the shell; the measuring component is arranged at the top of the shell and connected with the sliding component, and the sliding component drives the measuring component to measure the size of the inner spherical surface.
Specifically, the sliding assembly comprises a displacement transmission rod, and the displacement transmission rod is connected with a spherical measuring block arranged at the lower end of the shell.
Specifically, the displacement transmission rod is further sleeved with a spring.
Specifically, the locating component comprises a fastening screw and a locating sleeve, and the fastening screw and the locating sleeve are both arranged on the outer wall of the shell.
Specifically, the measuring component comprises a dial indicator, and the dial indicator is connected with the displacement transfer rod.
Specifically, the central angle of the inner spherical surface is smaller than 90 °.
Because interior sphere size quick measuring device has supplementary spherical measuring block, spherical measuring block can realize quick location centre of sphere, then measures the distance of spherical measuring block to engine part terminal surface through displacement transfer pole and percentage table, can calculate the position size of centre of sphere to engine part terminal surface distance.
The utility model has the beneficial effects that: the sphere center can be quickly and accurately positioned, the size of the position can be accurately measured by calculation after data is read by a dial indicator, and the detection precision of engine parts can be improved, so that the qualification rate of the engine parts is ensured; convenient to use, can remove at will, measurement accuracy is high, and the error is little.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of an engine component;
FIG. 3 is a front view of an engine part;
in the figure, 1-fastening screw, 2-locating sleeve, 3-spring, 4-dial indicator, 5-shell, 6-displacement transmission rod, 7-spherical measuring block, 8-engine part and 9-internal spherical surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example 1:
referring to fig. 1-3, a device for rapidly measuring the size of an inner spherical surface comprises a shell 5, a positioning component, a sliding component and a measuring component, wherein the positioning component is arranged on the outer wall of the shell 5; the sliding assembly is arranged in the cavity of the shell 5 and can move up and down along the cavity of the shell 5; the measuring component is arranged at the top of the shell 5 and connected with the sliding component, and the sliding component drives the measuring component to measure the size of the inner spherical surface 9.
Further, in this embodiment, the sliding assembly includes a displacement transmission rod 6, the displacement transmission rod 6 is connected to a spherical measuring block 7 disposed at the lower end of the housing 5, and the spherical measuring block 7 can realize quick positioning of the center of sphere.
Further, in this embodiment, the displacement transmission rod 6 is further sleeved with a spring 3, and the spring 3 can automatically push against the end surface of the spherical measuring block 7.
Further, in this embodiment, the positioning assembly includes a fastening screw 1 and a positioning sleeve 2, the fastening screw 1 and the positioning sleeve 2 are both disposed on the outer wall of the housing 5, and the positioning sleeve 2 is used for positioning the end face of the engine part 8.
Further, in this embodiment, the measuring component includes a dial indicator 4, the dial indicator 4 is connected to the displacement transmission rod 6, and the displacement distance of the displacement transmission rod 6 can be measured by the dial indicator 4.
Further, in the present embodiment, the dial indicator 4 can be fixed by the fastening screw 1.
Further, in the present embodiment, the spherical center angle of the inner spherical surface 9 is smaller than 90 °. The utility model is mainly used for rapidly detecting the length size from the center to the edge of the sphere with the inner hole smaller than 1/4.
The requirement of the size distance from the spherical center of the inner spherical surface to the end surface exists in a certain type of engine tail nozzle pull rod part, the distance A between the spherical center of the inner spherical surface 9 and the end surface needs to be detected to be +/-0.02, and the spherical center angle corresponding to the size B is less than 90 degrees. See in particular fig. 2-3.
The use method of the utility model comprises the following steps: carrying out zero alignment on the quick measuring device of the size of the inner spherical surface; then the spherical measuring block 7 is arranged in the inner spherical surface 9, the shell 5 is placed on the end surface of the engine part 8 to be measured, and the positioning is carried out through the positioning sleeve 2; at the moment, the displacement transmission rod 6 automatically supports the end face of the spherical measuring block under the elastic force action of the spring 3, and the moving distance of the displacement transmission rod 6 is the distance from the end face of the engine part 8 to the end face of the spherical measuring block and can be read by the dial indicator 4; the actual measurement of the dimension a is obtained by adding the reading to the distance (known) from the end face of the spherical measuring block 7 to the spherical center of the spherical measuring block 7.
The utility model can quickly and accurately position the sphere center of the inner spherical surface 9 of the engine part 8, can accurately measure the size of the inner spherical surface 9 by calculation after reading data through the dial indicator 4, and can improve the detection precision of the engine part 8, thereby ensuring the qualification rate of the engine part 8.
Example 2:
a quick measuring device for the size of an inner spherical surface comprises a shell 5, a positioning component, a sliding component and a measuring component, wherein the positioning component is arranged on the outer wall of the shell 5; the sliding assembly is arranged in the cavity of the shell 5 and can move up and down along the cavity of the shell 5; the measuring component is arranged at the top of the shell 5 and connected with the sliding component, and the sliding component drives the measuring component to measure the size of the inner spherical surface 9.
Further, in this embodiment, the sliding assembly includes a displacement transmission rod 6, the displacement transmission rod 6 is connected to a spherical measuring block 7 disposed at the lower end of the housing 5, and the spherical measuring block 7 can realize quick positioning of the center of sphere.
Further, in this embodiment, the displacement transmission rod 6 is further sleeved with a spring 3, and the spring 3 can automatically push against the end surface of the spherical measuring block 7.
Further, in this embodiment, the positioning assembly includes a fastening screw 1 and a positioning sleeve 2, the fastening screw 1 and the positioning sleeve 2 are both disposed on the outer wall of the housing 5, and the positioning sleeve 2 is used for positioning the end face of the engine part 8.
Further, in this embodiment, in order to facilitate reading, a buckle (not shown in the drawings) is arranged on the positioning sleeve 2, the buckle is used for fixing the displacement transmission rod 6, the displacement transmission rod 6 is fixed through the buckle after the end face of the spherical measuring block 7 is pushed against, and at the moment, the device can be taken out for reading, so that the reading is more convenient and fast, and after the reading is completed, the displacement transmission rod 6 can be released through the buckle, so that the subsequent measurement can be carried out.
Further, in this embodiment, the measuring component includes a dial indicator 4, the dial indicator 4 is connected to the displacement transmission rod 6, and the displacement distance of the displacement transmission rod 6 can be measured by the dial indicator 4.
Further, in the present embodiment, the dial indicator 4 can be fixed by the fastening screw 1.
Further, in the present embodiment, the spherical center angle of the inner spherical surface 9 is smaller than 90 °. The utility model is mainly used for rapidly detecting the length size from the center to the edge of the sphere with the inner hole smaller than 1/4.
The requirement of the size distance from the spherical center of the inner spherical surface to the end surface exists in a certain type of engine tail nozzle pull rod part, the distance A between the spherical center of the inner spherical surface 9 and the end surface needs to be detected to be +/-0.02, and the spherical center angle corresponding to the size B is less than 90 degrees. See in particular fig. 2-3.
The use method of the utility model comprises the following steps: carrying out zero alignment on the quick measuring device of the size of the inner spherical surface; then the spherical measuring block 7 is arranged in the inner spherical surface 9, the shell 5 is placed on the end surface of the engine part 8 to be measured, and the positioning is carried out through the positioning sleeve 2; at the moment, the displacement transmission rod 6 automatically supports against the end face of the spherical measuring block under the action of the elastic force of the spring 3, the moving distance of the displacement transmission rod 6 is the distance from the end face of the engine part 8 to the end face of the spherical measuring block, and the distance can be read through the dial indicator 4 (if the field reading is inconvenient, the displacement transmission rod 6 can be fixed through a buckle and then taken out for reading); the actual measurement of the dimension a is obtained by adding the reading to the distance (known) from the end face of the spherical measuring block 7 to the spherical center of the spherical measuring block 7.
The utility model can quickly and accurately position the sphere center of the inner spherical surface 9 of the engine part 8, can accurately measure the size of the inner spherical surface 9 by calculation after reading data through the dial indicator 4, and can improve the detection precision of the engine part 8, thereby ensuring the qualification rate of the engine part 8.
The utility model mainly relates to rapid detection of the length size from the center to the edge of an aeroengine inner hole smaller than 1/4 balls, which mainly comprises a fastening screw 1, a positioning sleeve 2, a spring 3, a dial indicator 4, a shell 5, a displacement transmission rod 6 and a spherical measuring block 7. The spherical measuring block 7 is placed into the measured inner spherical surface 9, the shell 5 is in contact positioning with the end surface of the measured engine part 8 through the positioning sleeve 2, the displacement transmission rod 6 automatically pushes the end surface of the spherical measuring block 7 under the elastic action of the spring 3, the moving distance of the displacement transmission rod 6 is the distance from the end surface of the engine part 8 to the end surface of the spherical measuring block 7, data can be directly read through the dial indicator 4, and the distance from the sphere center of the measured inner spherical surface 9 to the end surface of the engine part 8 can be obtained by adding the distance from the end surface of the spherical measuring block 7 to the sphere center of the spherical measuring block 7 to the reading at the moment. The whole device is convenient to use, can be moved randomly, and has high measurement precision and small error.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "outer", "inner", and the like, which refer to an orientation or positional relationship based on that shown in the drawings, are used only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the above embodiments, the basic principle and the main features of the present invention and the advantages of the present invention are described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, and that modifications and variations can be made by one skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The quick measuring device for the size of the inner spherical surface is characterized by comprising a shell (5), a positioning component, a sliding component and a measuring component, wherein the positioning component is arranged on the outer wall of the shell (5); the sliding assembly is arranged in the cavity of the shell (5) and can move up and down along the cavity of the shell (5); the measuring component is arranged at the top of the shell (5) and connected with the sliding component, and the sliding component drives the measuring component to measure the size of the inner spherical surface (9).
2. The rapid measuring device of the internal spherical dimension as claimed in claim 1, wherein the sliding component comprises a displacement transmission rod (6), and the displacement transmission rod (6) is connected with a spherical measuring block (7) arranged at the lower end of the shell (5).
3. The rapid measuring device for the size of the inner spherical surface as claimed in claim 2, wherein the displacement transmission rod (6) is further sleeved with a spring (3).
4. The rapid measuring device for the internal spherical dimension as claimed in claim 1, wherein the positioning assembly comprises a fastening screw (1) and a positioning sleeve (2), and the fastening screw (1) and the positioning sleeve (2) are both arranged on the outer wall of the shell (5).
5. An internal spherical dimension rapid measuring device according to claim 1, characterized in that the measuring component comprises a dial indicator (4), and the dial indicator (4) is connected with the displacement transmission rod (6).
6. A rapid measuring device for the dimensions of an internal spherical surface according to claim 1, characterized in that the central angle of the internal spherical surface (9) is less than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122504020.0U CN216283100U (en) | 2021-10-18 | 2021-10-18 | Quick measuring device of interior sphere size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122504020.0U CN216283100U (en) | 2021-10-18 | 2021-10-18 | Quick measuring device of interior sphere size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216283100U true CN216283100U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122504020.0U Active CN216283100U (en) | 2021-10-18 | 2021-10-18 | Quick measuring device of interior sphere size |
Country Status (1)
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| CN (1) | CN216283100U (en) |
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2021
- 2021-10-18 CN CN202122504020.0U patent/CN216283100U/en active Active
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