CN214702075U - Nozzle depth measuring tool - Google Patents
Nozzle depth measuring tool Download PDFInfo
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- CN214702075U CN214702075U CN202120456996.2U CN202120456996U CN214702075U CN 214702075 U CN214702075 U CN 214702075U CN 202120456996 U CN202120456996 U CN 202120456996U CN 214702075 U CN214702075 U CN 214702075U
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- depth
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Abstract
The utility model discloses a nozzle depth measuring tool, which comprises a measuring tool body and a measuring rod, wherein the measuring tool body is provided with a first reference surface which is used for being jointed with a positioning surface and a second reference surface which is parallel to the first reference surface, the sliding end of the measuring rod is used for being connected with the measuring tool body in a sliding way, the measuring end of the measuring rod is used for extending into an input flow channel, the sliding end surface of the measuring rod, the measuring end surface of the measuring rod, the first reference surface and the second reference surface are parallel, the first reference surface of the measuring tool body is jointed with the positioning surface of a part by jointing the first reference surface of the measuring tool body, and further, by controlling the sliding end of the sliding measuring rod, the measuring end of the measuring rod is extended into the input flow channel and is jointed with the bottom surface of the input flow channel, the distance difference between the sliding end surface of the measuring rod and the second reference surface is equal to the deviation between the depth of a measured nozzle and the depth of a standard nozzle, thereby judging whether the depth of the tested nozzle meets the requirement.
Description
Technical Field
The utility model relates to a nozzle measuring tool field especially relates to a nozzle degree of depth measuring tool.
Background
In some parts of aircraft engines, the inlet channel on the outer periphery of the part and the nozzle communicating with the inlet channel, it is difficult to directly measure the depth of the nozzle because the nozzle has a small inner diameter and is limited by the inlet channel. Currently, the following measures are taken:
1) three-coordinate metrology is used. The following problems are associated with using three-coordinate metrology: 1) the three-coordinate measurement is long in time consumption, a professional is required to measure the parts, the operability is not realized on the mass production of the parts, the structure of the parts is special, and the operation process of the three-coordinate measurement is complex; 2) the three-coordinate measurement is inconvenient in the machining process, the parts need to be assembled and disassembled for many times, and the part clamping error is increased, so that the part is out of tolerance.
2) The measurements were taken with calipers. The universal caliper cannot be adopted, a special caliper needs to be designed, the special caliper is generally divided into two types, one type is designed by an integral structure, and the design is too complicated; the other type is to buy a universal caliper, and the measuring head and the universal caliper are connected together by welding through changing the measuring head of the caliper, so that the processing technology is complex and welding deformation exists. And because the structure of the object to be measured is special, the structure of the measuring head needs to be a cylindrical flat head, and the calibration and verification of the calibration table are difficult to ensure.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nozzle degree of depth measuring tool, its purpose is for solving the measurement of current nozzle degree of depth, and the operation is complicated and measure unsafe technical problem.
According to one aspect of the present invention, there is provided a nozzle depth measuring device for determining whether the depth of a nozzle meets requirements, an input flow channel is formed on the outer peripheral surface of a measured part, the nozzle is formed on the bottom surface of the input flow channel, the plane of the nozzle is a positioning surface for positioning the measuring device body, the nozzle depth measuring device comprises a measuring device body and a measuring rod installed on the measuring device body, the measuring device body is provided with a first reference surface for being attached to the positioning surface and a second reference surface parallel to the first reference surface, the sliding end of the measuring rod is used for being slidably connected with the measuring device body, the measuring end of the measuring rod is used for extending into the input flow channel, and the sliding end surface of the measuring rod, the measuring end surface of the measuring rod, the first reference surface and the second reference surface are parallel to each other, the diameter of the measuring end of the measuring rod is smaller than the inner diameter of the input flow channel and larger than the inner diameter of the nozzle, the distance between the bottom surface of the input flow channel and the positioning surface on the part is equal to the depth of the nozzle, the distance between the second reference surface and the first reference surface is equal to the sum of the depth of the standard nozzle and the total length of the measuring rod, the first reference surface of the measuring tool body is attached to the positioning surface of the part, the measuring end of the measuring rod extends into the input flow channel and the end surface of the measuring end of the measuring rod is attached to the bottom surface of the input flow channel by controlling the sliding end of the sliding measuring rod, and the distance difference between the end surface of the sliding end of the measuring rod and the second reference surface is equal to the deviation between the depth of the measured nozzle and the depth of the standard nozzle, so that whether the depth of the measured nozzle meets the requirement or not is judged.
Further, the second reference surface is of a stepped surface structure, the stepped surface structure comprises an inner stepped surface close to the first reference surface and an outer stepped surface far away from the first reference surface, the deviation between the depth of the nozzle to be measured and the depth of the standard nozzle has allowable deviation, the distance from the outer stepped surface of the second reference surface to the first reference surface is smaller than or equal to the sum of the depth of the standard nozzle, the maximum allowable upper deviation and the total length of the metering rod, and the distance from the inner stepped surface of the second reference surface to the first reference surface is larger than or equal to the sum of the depth of the standard nozzle, the maximum allowable lower deviation and the total length of the metering rod.
Further, the measuring rod is enclosed by the inner step surface and the outer step surface and is respectively positioned on two sides of the measuring rod.
Furthermore, the step surface structure also comprises a plurality of step surfaces which are closer to the first reference surface than the inner step surface and/or are farther from the first reference surface than the outer step surface, so that different step surfaces are selected as second reference surfaces according to the measurement requirements of parts of different types and/or different nozzles.
Furthermore, the measuring tool body is provided with a sliding hole which is used for being in sliding connection with the sliding end of the measuring rod, and the inlet of the sliding hole is located on the second reference surface.
Furthermore, the outer wall surface of the sliding end of the measuring rod is provided with a sliding groove along the axial direction, and the measuring tool body is provided with a limiting part inserted in the sliding groove along the radial direction of the sliding hole so as to limit the sliding range and the circumferential rotation of the measuring rod.
Further, sharp edges are maintained between the second reference surface and the inner wall surface of the slide hole, and between the end surface of the slide end and the outer wall surface of the slide end.
Furthermore, the measuring tool body is U-shaped, the first reference surface is positioned on the inner side surface of the first side edge of the U-shaped measuring tool body, the measuring rod is installed on the second side edge of the U-shaped measuring tool body, and the second reference surface is positioned on the outer side surface of the second side edge of the U-shaped measuring tool body.
The utility model discloses following beneficial effect has:
the utility model discloses a nozzle degree of depth measuring tool, the locating surface of place plane through the spout with the nozzle as the measuring tool body, will measure the first reference surface and the laminating of locating surface of tool body mutually, realize the location of measuring tool body, thereby the accuracy of result has been guaranteed, and the degree of depth of direct measurement nozzle, but the terminal surface through the measuring end with the measuring rod is laminated with the bottom surface that records the input runner mutually, thereby make the distance between the terminal surface of the measuring end of measuring rod and the first reference surface equal to the degree of depth by the measuring nozzle, because the distance between the second reference surface on the measuring tool body and the first reference surface equals the degree of depth of standard nozzle and the total length sum of measuring rod, consequently, through stretching into the measuring end of measuring rod in the input runner of being surveyed the part, make the measuring end terminal surface of measuring rod laminate with the bottom surface of input runner mutually, consequently, the distance difference between the distance end terminal surface of sliding end of measuring rod and the measuring tool body second reference surface equals to be surveyed the degree of depth of nozzle and the degree of depth of standard nozzle partially between the degree of depth of standard nozzle And (4) judging whether the depth of the tested nozzle meets the requirement or not. Therefore, the utility model discloses a nozzle degree of depth measuring tool simple structure and easy to operate to fix a position through the place plane with the spout of nozzle, guaranteed the accuracy of result.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic structural view of the components of the preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at B in FIG. 1;
FIG. 3 is a schematic structural view of a nozzle depth measuring device according to a preferred embodiment of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Illustration of the drawings:
1. a measuring tool body; 11. a first reference plane; 12. a second reference plane; 121. an inner step surface; 122. an outer step surface; 2. a measuring rod; 21. a measuring end; 22. a sliding end; 23. a chute; 3. a limiting member; 100. a part; 101. an input flow channel; 102. a nozzle.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered below.
FIG. 1 is a schematic structural view of the components of the preferred embodiment of the present invention; FIG. 2 is an enlarged schematic view of the structure at B in FIG. 1; FIG. 3 is a schematic structural view of a nozzle depth measuring device according to a preferred embodiment of the present invention; fig. 4 is an enlarged schematic view of a portion a in fig. 3.
As shown in fig. 1, 2 and 3, the nozzle depth measuring device of the present embodiment is used for determining whether the depth of the nozzle 102 meets the requirement, the outer peripheral surface of the measured part 100 is provided with the input flow channel 101, the nozzle 102 is provided on the bottom surface of the input flow channel 101, and the plane of the nozzle 102 is a positioning surface for positioning the measuring device body 1. The nozzle depth measuring tool comprises a measuring tool body 1 and a measuring rod 2 arranged on the measuring tool body 1, wherein a first reference surface 11 used for being attached to a positioning surface and a second reference surface 12 parallel to the first reference surface 11 are arranged on the measuring tool body 1, a sliding end 22 of the measuring rod 2 is used for being connected with the measuring tool body 1 in a sliding mode, a measuring end 21 of the measuring rod 2 is used for extending into an input flow channel 101, the end surface of the sliding end 22 of the measuring rod 2, the end surface of the measuring end 21 of the measuring rod 2, the first reference surface 11 and the second reference surface 12 are parallel, the diameter of the measuring end 21 of the measuring rod 2 is smaller than the inner diameter of the input flow channel 101 and larger than the inner diameter of a nozzle 102, the distance between the bottom surface of the input flow channel 101 and the positioning surface on a part 100 is equal to the depth of the nozzle 102, the distance between the second reference surface 12 and the first reference surface 11 is equal to the sum of the depth of a standard nozzle 102 and the total length of the measuring rod 2, the first reference surface 11 of the measuring tool body 1 is attached to the positioning surface of the part 100, and then the sliding end 22 of the sliding measuring rod 2 is controlled, the measuring end 21 of the measuring rod 2 extends into the input flow channel 101, the end surface of the measuring end 21 of the measuring rod 2 is attached to the bottom surface of the input flow channel 101, the distance difference between the end surface of the sliding end 22 of the measuring rod 2 and the second reference surface 12 is equal to the deviation between the depth of the nozzle 102 to be measured and the depth of the standard nozzle 102, and therefore whether the depth of the nozzle 102 to be measured meets the requirement or not is judged.
As shown in fig. 1 and fig. 2, in the present embodiment, a trapezoidal bump is formed on the inner wall surface of the measured part 100 extending inward in the radial direction, and a plurality of trapezoidal bumps are uniformly distributed along the circumferential direction of the part 100, wherein a nozzle 102 is formed in the plurality of trapezoidal bumps, an input flow channel 101 communicating with the nozzle 102 is formed on the outer circumferential surface of the measured part 100, and gas or liquid is conveyed to the nozzle 102 through the input flow channel 101 and then is sprayed into the part 100 from the nozzle 102. The angle between the axial direction of the inlet flow channel 101 and nozzle 102 and the radial direction of the part 100 is 51.57 ° ± 1 °. The face of the nozzle 102 on which the orifice is located is on the side of the trapezoidal projection. In this embodiment, the inner diameter of the input flow path 101 is 2.5(+0.1, 0) mm, and the diameter of the measuring end 21 of the measuring rod 2 is 2.2(0, -0.1) mm.
The nozzle depth measuring device of the utility model, the plane of the nozzle 102 is used as the positioning surface of the measuring device body 1, the first reference surface 11 of the measuring device body 1 is jointed with the positioning surface, the positioning of the measuring device body 1 is realized, the accuracy of the result is ensured, the depth of the nozzle 102 is not directly measured, but the end surface of the measuring end 21 of the measuring rod 2 is jointed with the bottom surface of the measured input flow channel 101, so that the distance between the end surface of the measuring end 21 of the measuring rod 2 and the first reference surface 11 is equal to the depth of the measured nozzle 102, because the distance between the second reference surface 12 on the measuring device body 1 and the first reference surface 11 is equal to the sum of the depth of the standard nozzle 102 and the total length of the measuring rod 2, the measuring end 21 of the measuring rod 2 is stretched into the input flow channel 101 of the measured part 100, the end surface 21 of the measuring rod 2 is jointed with the bottom surface of the input flow channel 101, therefore, the distance difference between the end surface of the sliding end 22 of the measuring rod 2 and the second reference surface 12 on the measuring tool body 1 is equal to the deviation between the depth of the measured nozzle 102 and the depth of the standard nozzle 102, and whether the depth of the measured nozzle 102 meets the requirement is judged. Therefore, the nozzle depth measuring tool of the present invention has a simple structure and is easy to operate, and the accuracy of the result is ensured by positioning the plane of the nozzle 102.
As shown in fig. 3 and 4, the second reference surface 12 is a stepped surface structure including an inner stepped surface 121 close to the first reference surface 11 and an outer stepped surface 122 far from the first reference surface 11, the deviation of the depth of the nozzle 102 to be measured from the depth of the standard nozzle 102 has an allowable deviation, the distance from the outer stepped surface 122 of the second reference to the first reference surface 11 is less than or equal to the sum of the depth of the standard nozzle 102, the maximum allowable upper deviation and the total length of the metering rod 2, and the distance from the inner stepped surface 121 of the second reference surface 12 to the first reference surface 11 is greater than or equal to the sum of the depth of the standard nozzle 102, the maximum allowable lower deviation and the total length of the metering rod 2. In this embodiment, the standard nozzle 102 has a depth of 11.02mm, a maximum allowable upper deviation of +0.21mm, a maximum allowable lower deviation of-0.21 mm, and a total deviation range of 0.42 mm. Thus the minimum allowable depth of the nozzle 102 is 10.81mm, the distance between the inner step surface 121 and the first reference surface 11 is equal to (10.81+0.042) mm, and the distance between the outer step surface 122 and the inner step surface 121 is (0.85 × 0.42 ± 0.03 × 0.42) mm, i.e., (0.357 ± 0.0126) mm. When the outer step surface 122 is worn and the distance between the outer step surface 122 and the inner step surface 121 is reduced to (0.357 ± 0.021) mm, the measuring tool body 1 is discarded and is not used.
As shown in fig. 3 and 4, the inner step surface 121 and the outer step surface 122 surround the measuring rod 2 and are respectively located on both sides of the measuring rod 2. It is convenient for an operator to observe the difference in distance between the end surface of the sliding end 22 of the measuring stick 2 and the inner and outer step surfaces 121 and 122.
The step surface structure further comprises a plurality of step surfaces which are closer to the first reference surface 11 than the inner step surface 121 and/or are farther from the first reference surface 11 than the outer step surface 122, so that different step surfaces can be selected as the second reference surface 12 according to the measurement requirements of different models of parts 100 and/or different nozzles 102.
As shown in fig. 3 and 4, the measuring tool body 1 is provided with a slide hole for slidably connecting with the slide end 22 of the measuring rod 2, and the inlet of the slide hole is located on the second reference surface 12. The outer wall surface of the sliding end 22 of the measuring rod 2 is provided with a sliding groove 23 along the axial direction, and the measuring tool body 1 is provided with a limiting part 3 inserted in the sliding groove 23 along the radial direction of the sliding hole so as to limit the sliding range and the circumferential rotation of the measuring rod 2. In this embodiment, the position-limiting member 3 is disposed through the wall of the measuring tool body 1, so as to facilitate the assembly and disassembly for replacing the measuring rod 2.
As shown in fig. 3 and 4, sharp edges are maintained between the second reference surface 12 and the inner wall surface of the slide hole, and between the end surface of the slide end 22 and the outer wall surface of the slide end 22. In the present embodiment, no chamfering process is performed between the second reference surface 12 and the inner wall surface of the slide hole, and between the end surface of the slide end 22 and the outer wall surface of the slide end 22, and sharp edges are maintained, so that it is possible to judge more accurately whether the end surface of the slide end 22 of the metering rod 2 is located between the outer step surface 122 and the inner step surface 121, and thus whether the deviation between the depth of the nozzle 102 to be measured and the depth of the standard nozzle 102 is within an allowable deviation range.
As shown in fig. 3, the measuring tool body 1 is U-shaped, the first reference surface 11 is located on the inner side of the first side of the U-shaped measuring tool body 1, the measuring rod 2 is installed on the second side of the U-shaped measuring tool body 1, and the second reference surface 12 is located on the outer side of the second side of the U-shaped measuring tool body 1. Optionally, the middle connecting section of the U-shaped measuring tool body 1 is used for a measuring person to operate by hand, and the corner between the middle connecting section and the first side edge and the second side edge is set to be an arc-shaped angle. The surface of the measuring tool body 1 is covered with a wear-resistant layer.
The nozzle depth measuring method of the embodiment adopts the nozzle depth measuring tool, firstly, the measuring rod 2 is pulled out, then the measuring tool body 1 is clamped into the part 100, the first reference surface 11 of the measuring tool body 1 is tightly attached to the positioning surface of the part 100 to be measured, then, the measuring end 21 of the measuring rod 2 is aligned to the input flow channel 101, the measuring end 21 of the measuring rod 2 is pushed in along the axial direction of the input flow channel 101 until the end surface of the measuring end 21 of the measuring rod 2 is tightly attached to the bottom surface of the input flow channel 101, and when the end surface of the sliding end 22 of the measuring rod 2 is between the inner step surface 121 and the outer step surface 122 of the second reference surface 12, the depth of the nozzle 102 to be measured is in accordance with the requirement.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A nozzle depth measuring tool is used for judging whether the depth of a nozzle (102) meets the requirement or not, an input flow channel (101) is arranged on the peripheral surface of a measured part (100), the nozzle (102) is arranged on the bottom surface of the input flow channel (101), the plane of a nozzle of the nozzle (102) is a positioning surface for positioning a measuring tool body (1), and the nozzle depth measuring tool is characterized in that,
the nozzle depth measuring tool comprises a measuring tool body (1) and a measuring rod (2) arranged on the measuring tool body (1),
the measuring tool body (1) is provided with a first reference surface (11) which is used for being attached to the positioning surface and a second reference surface (12) which is parallel to the first reference surface (11),
the sliding end (22) of the measuring rod (2) is used for being connected with the measuring tool body (1) in a sliding mode, the measuring end (21) of the measuring rod (2) is used for extending into the input flow channel (101), the end face of the sliding end (22) of the measuring rod (2), the end face of the measuring end (21) of the measuring rod (2), the first reference surface (11) and the second reference surface (12) are parallel, the diameter of the measuring end (21) of the measuring rod (2) is smaller than the inner diameter of the input flow channel (101) and larger than the inner diameter of the nozzle (102),
the distance between the bottom surface of the input flow channel (101) on the part (100) and the positioning surface is equal to the depth of the nozzle (102), the distance from the second reference surface (12) to the first reference surface (11) is equal to the sum of the depth of the standard nozzle (102) and the total length of the measuring rod (2),
the first reference surface (11) of the measuring tool body (1) is attached to the positioning surface of the part (100), the sliding end (22) of the sliding measuring rod (2) is controlled, the measuring end (21) of the measuring rod (2) extends into the input flow channel (101) and the end surface of the measuring end (21) of the measuring rod (2) is attached to the bottom surface of the input flow channel (101), and the distance difference between the end surface of the sliding end (22) of the measuring rod (2) and the second reference surface (12) is equal to the deviation between the depth of the measured nozzle (102) and the depth of the standard nozzle (102), so that whether the depth of the measured nozzle (102) meets the requirement or not is judged.
2. The nozzle depth measuring instrument according to claim 1,
the second reference surface (12) is of a stepped surface structure, the stepped surface structure comprises an inner stepped surface (121) close to the first reference surface (11) and an outer stepped surface (122) far away from the first reference surface (11), the deviation between the depth of the nozzle (102) to be measured and the depth of the standard nozzle (102) has an allowable deviation, the distance from the outer stepped surface (122) of the second reference surface (12) to the first reference surface (11) is smaller than or equal to the sum of the depth of the standard nozzle (102), the maximum allowable upper deviation and the total length of the metering rod (2), and the distance between the inner stepped surface (121) of the second reference surface (12) and the first reference surface (11) is larger than or equal to the sum of the depth of the standard nozzle (102), the maximum allowable lower deviation and the total length of the metering rod (2).
3. The nozzle depth measuring instrument according to claim 2,
the inner step surface (121) and the outer step surface (122) enclose the measuring rod (2) and are respectively positioned at two sides of the measuring rod (2).
4. The nozzle depth measuring instrument according to claim 2,
the step surface structure further comprises a plurality of step surfaces which are closer to the first reference surface (11) than the inner step surface (121) and/or are farther from the first reference surface (11) than the outer step surface (122), so that different step surfaces can be selected as second reference surfaces (12) according to the measurement requirements of different types of parts (100) and/or different nozzles (102).
5. The nozzle depth measuring instrument according to claim 1,
the measuring tool body (1) is provided with a sliding hole which is used for being in sliding connection with the sliding end (22) of the measuring rod (2), and the inlet of the sliding hole is positioned on the second reference surface (12).
6. The nozzle depth measuring instrument according to claim 5,
the outer wall surface of the sliding end (22) of the measuring rod (2) is provided with a sliding groove (23) along the axial direction, and the measuring tool body (1) is provided with a limiting piece (3) which is inserted into the sliding groove (23) along the radial direction of a sliding hole so as to limit the sliding range and the circumferential rotation of the measuring rod (2).
7. The nozzle depth measuring instrument according to claim 5,
sharp edges are maintained between the second reference surface (12) and the inner wall surface of the slide hole, and between the end surface of the slide end (22) and the outer wall surface of the slide end (22).
8. The nozzle depth measuring instrument according to claim 1,
the measuring tool body (1) is U-shaped, the first reference surface (11) is located on the inner side surface of the first side edge of the U-shaped measuring tool body (1), the measuring rod (2) is installed on the second side edge of the U-shaped measuring tool body (1), and the second reference surface (12) is located on the outer side surface of the second side edge of the U-shaped measuring tool body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120456996.2U CN214702075U (en) | 2021-03-03 | 2021-03-03 | Nozzle depth measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120456996.2U CN214702075U (en) | 2021-03-03 | 2021-03-03 | Nozzle depth measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214702075U true CN214702075U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120456996.2U Active CN214702075U (en) | 2021-03-03 | 2021-03-03 | Nozzle depth measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214702075U (en) |
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2021
- 2021-03-03 CN CN202120456996.2U patent/CN214702075U/en active Active
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Address after: 412000 No. 1018, Hangfei Avenue, Lusong District, Zhuzhou City, Hunan Province Patentee after: Hunan Xingtu Aerospace and Spacecraft Manufacturing Co.,Ltd. Address before: Dong Jiaduan 412002 in Hunan province Zhuzhou city Lusong District Patentee before: AVIC POWER ZHUZHOU AVIATION PARTS MANUFACTURING Co.,Ltd. |
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