CN114001630A - Blade body groove eccentricity measuring device and method for guide blade - Google Patents
Blade body groove eccentricity measuring device and method for guide blade Download PDFInfo
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- CN114001630A CN114001630A CN202111326063.2A CN202111326063A CN114001630A CN 114001630 A CN114001630 A CN 114001630A CN 202111326063 A CN202111326063 A CN 202111326063A CN 114001630 A CN114001630 A CN 114001630A
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- 238000005259 measurement Methods 0.000 abstract description 12
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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Abstract
The invention discloses a blade body groove eccentricity measuring device for a guide blade, which is characterized in that a first positioning assembly is in inserting fit with a first shaft diameter of the guide blade to complete radial positioning of the guide blade, the angular positioning assembly is attached to an angular positioning surface on the first shaft diameter for limiting so as to complete angular positioning of the guide blade, and a second positioning assembly is abutted against a tip hole of the guide blade to complete axial positioning of the guide blade; the gap A and the gap B between the measuring end of the first measuring component and the side walls of the two sides of the blade body groove are respectively measured through the third measuring component, the blade body groove eccentricity C of the guide blade is obtained through the gap A and the gap B, then the second measuring component is used for checking, the measurement is fast and convenient, the measuring result is accurate, the measuring efficiency is high, and the measuring device is suitable for measuring the guide blade processed in batches.
Description
Technical Field
The invention relates to the technical field of blade processing and measurement, in particular to a blade body groove eccentricity measuring device for a guide blade. In addition, the invention also relates to a blade body groove eccentricity measuring method for the guide blade by adopting the blade body groove eccentricity measuring device for the guide blade.
Background
Because the performance requirement of the aircraft engine is high, the precision requirement of the guide blades which have important influence on the performance of the aircraft engine is high, each guide blade needs to be detected after being processed to ensure the precision, and the requirement on the measurement efficiency of the guide blades is higher and higher to avoid the overlong research and development period.
However, the detection of the blade body slot eccentricity of the existing guide blade is mainly realized by a coordinate measuring method and a three-coordinate measuring machine at present, and the following steps are specifically adopted: the processed guide blade is transported to a three-coordinate measuring machine, then is positioned through a clamp, the eccentric distance of a blade body groove of the guide blade is detected through the three-coordinate measuring machine, and then whether the eccentric distance of the blade body groove meets the requirement is judged. Although the method has high measurement accuracy, the operation is difficult and the measurement time is long, the measurement efficiency is too low for a large number of guide vanes needing batch processing, and the development cycle of the aeroengine is greatly prolonged.
Disclosure of Invention
The invention provides a blade body groove eccentricity measuring device and method for a guide blade, and aims to solve the technical problem that the blade body groove eccentricity measuring efficiency of the existing guide blade is low.
According to one aspect of the invention, the blade body groove eccentricity measuring device for the guide blade is used for measuring the blade body groove eccentricity after the guide blade is clamped and positioned, the two ends of the guide blade are respectively provided with a first shaft diameter and a second shaft diameter which are formed by extending in the length direction, the outer side wall of the free end of the first shaft diameter is provided with an angular positioning surface which is formed by radially sinking, the second shaft diameter is provided with a tip hole which is formed by sinking in the length direction, the measuring device comprises a first positioning assembly, an angular positioning assembly, a second positioning assembly, a first measuring assembly, a second measuring assembly and a second measuring assembly, wherein the first positioning assembly is used for being in plug-in fit with the first shaft diameter to radially position and axially limit the guide blade, the angular positioning assembly is arranged on the first positioning assembly and is used for being in close fit with the angular positioning surface to angularly position the guide blade, the second positioning assembly is used for being in contact with the tip hole to axially position the guide blade, the first measuring assembly is arranged on the first positioning assembly and is used for being inserted into the blade body groove, And the third measuring component is arranged on the second positioning component and is used for respectively measuring the gap between the side wall of the blade body groove and the first measuring component and the gap between the side wall of the blade body groove and the second measuring component.
Further, first locating component includes first locating seat, and first locating seat is seted up along length direction and is used for carrying out radial positioning and the spacing radial locating hole of axial with first axle footpath grafting cooperation in order to carry out guide vane.
Furthermore, first locating seat is equipped with the angle mounting groove with radial locating hole intercommunication along the width direction is concave, and angle locating component includes along width direction movably the installation in the angle mounting groove the angle locating piece, and the angle locating piece is equipped with along length direction sunken formation be used for with angle locating surface laminating spacing in order to carry out the angle location's angle locating groove to guide vane.
Furthermore, the top of the first positioning seat is concavely provided with a first sliding groove along the length direction, the first measuring component comprises a first sliding block movably arranged in the first sliding groove along the length direction, and the end part of the first sliding block, which is close to the second positioning component, is provided with a first measuring part which is formed by extending along the height direction and is used for being inserted into the blade groove.
Furthermore, the second positioning assembly comprises a second positioning seat which keeps a preset distance from the first positioning seat along the length direction, a tip rod which is movably installed on the second positioning seat along the length direction and used for abutting against the tip hole to axially position the guide blade, and a set screw which is installed on the second positioning seat along the radial direction and used for fixing or loosening the tip rod.
Furthermore, the center rod is provided with a strip-shaped connecting groove which is arranged along the length direction along the radial direction and is used for being connected with the tacking screw.
Furthermore, the top of the second positioning seat is concavely provided with a second sliding groove along the length direction, the second measuring component comprises a second sliding block movably arranged in the second sliding groove along the length direction, and the end part of the second sliding block, which is close to the first positioning component, is provided with a second measuring part extending along the height direction and used for being inserted into the blade groove.
Furthermore, the first measuring assembly is provided with a first connecting hole formed by sinking along the width direction and a first connecting rope which penetrates through the first connecting hole and is connected with the first positioning assembly; and/or the second measuring component comprises a second connecting hole formed by sinking along the width direction and a second connecting rope which passes through the second connecting hole and is connected with the second positioning component.
Further, the third measuring assembly comprises a clearance gauge which is respectively plugged between the first measuring assembly and the side walls on the two sides of the blade body groove to measure the clearance between the first measuring assembly and the side walls on the two sides of the blade body groove; and/or the third measuring component comprises a clearance gauge which is respectively plugged between the second measuring component and the side walls on the two sides of the blade body groove so as to measure the clearance between the second measuring component and the side walls on the two sides of the blade body groove.
According to another aspect of the present invention, there is provided a blade body slot eccentricity measuring method for a guide blade, including the following steps: installing a first positioning component and a second positioning component along the length direction, and then installing an angular positioning component on the first positioning component; the first positioning assembly is in plug-in fit with the first axial diameter to complete radial positioning and axial limiting of the guide blade, the angular positioning assembly is attached to the angular positioning surface to limit the angular positioning of the guide blade, and the positioning assembly abuts against the tip hole to complete axial positioning of the guide blade; installing a first measuring component on a first positioning component, plugging a measuring end of the first measuring component into the blade groove, and then respectively measuring a gap A and a gap B between the first measuring component and the side walls of the two sides of the blade groove through a third measuring component; obtaining C according to the clearance A, the clearance B and a calculation formula (A-B)/2, wherein C is the blade body slot eccentricity of the guide blade; mounting a second measuring component on a second positioning component (3), plugging a measuring end of the second measuring component into the blade groove, and measuring a gap E and a gap F between the second measuring component and the side walls of the two sides of the blade groove through a third measuring component; verifying the deviation distance C according to the clearance E, the clearance F and a calculation formula (E-F)/2 ═ C; and acquiring the blade body groove eccentricity D of the guide blade, which meets the design requirement, and judging whether the blade body groove eccentricity of the guide blade meets the design requirement according to the C and the D.
The invention has the following beneficial effects:
the blade body groove eccentricity measuring device for the guide blade is characterized in that a first positioning component and a second positioning component are installed along the length direction, an angular positioning component is installed on the first positioning component, then the first positioning component is in inserting fit with the first shaft diameter of the guide vane to complete the radial positioning and axial limiting of the first end of the guide vane, the angular positioning assembly is attached and limited with the angular positioning surface on the first shaft diameter to complete the angular positioning of the guide vane, and then the second positioning assembly is abutted against the tip hole of the guide vane to complete the axial positioning of the second end of the guide vane, so that the clamping and positioning of the guide vane are completed quickly, compared with the existing positioning device, the positioning mode of the scheme has simple structure and small volume, the device can be arranged around a guide blade processing device, namely, the device can be clamped and positioned in real time after the blade is processed to prepare for measurement; a first measuring component is arranged on a first positioning component, the measuring end of the first measuring component is plugged into the blade body groove, a gap A and a gap B between the measuring end of the first measuring component and the side walls of the two sides of the blade body groove are respectively measured through the third measuring component, the blade body groove eccentricity C of the guide blade is obtained through the gap A and the gap B, meanwhile, a second measuring component is arranged on a second positioning component, and the measuring end of the second measuring component is plugged into the blade body groove, the clearance E and the clearance F between the measuring end of the second measuring component and the side walls at the two sides of the blade groove are respectively measured by the third measuring component, the eccentricity C is verified according to the gap E and the gap F, the accuracy of a measuring result is ensured, and compared with the existing measuring device, the measuring device is simple in structure, fast and convenient to measure, accurate in measuring result and high in measuring efficiency, and is suitable for measuring guide blades processed in batches.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a blade body groove eccentricity measuring device for a guide blade according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a blade body groove eccentricity measuring device for a guide blade according to a preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a first positioning member of the blade body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention;
FIG. 4 is a schematic structural view of a first positioning member of the blade body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention;
FIG. 5 is a schematic structural view of a first positioning member of the body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention;
fig. 6 is a schematic structural view of a second positioning member in the body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention.
Illustration of the drawings:
1. a first positioning assembly; 11. a first positioning seat; 12. radial positioning holes; 13. an angular mounting groove; 14. a first chute; 2. an angular positioning assembly; 3. a second positioning assembly; 31. a second positioning seat; 32. a tip rod; 321. a strip-shaped connecting groove; 33. screwing the screw; 34. a second chute; 4. a positioning base; 5. a first measurement assembly; 51. a first measuring section; 52. a first connection hole; 6. a second measurement assembly; 61. a second measuring section; 62. and a second connection hole.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a blade body groove eccentricity measuring device for a guide blade according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of a blade body groove eccentricity measuring device for a guide blade according to a preferred embodiment of the present invention; FIG. 3 is a schematic structural view of a first positioning member of the blade body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention; FIG. 4 is a schematic structural view of a first positioning member of the blade body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention; FIG. 5 is a schematic structural view of a first positioning member of the body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention; fig. 6 is a schematic structural view of a second positioning member in the body groove eccentricity measuring device for a guide blade according to the preferred embodiment of the present invention.
As shown in fig. 1 to 6, the blade body slot eccentricity measuring device for the guide blade of the embodiment is used for measuring the blade body slot eccentricity after the guide blade is clamped and positioned, a first shaft diameter and a second shaft diameter formed by extending in the length direction are respectively arranged at two ends of the guide blade, an angular positioning surface formed by radially sinking is arranged on the outer side wall of the free end of the first shaft diameter, a tip hole formed by recessing in the length direction is arranged on the second shaft diameter, the measuring device comprises a first positioning component 1 used for being in plug-in fit with the first shaft diameter to radially position and axially limit the guide blade, an angular positioning component 2 arranged on the first positioning component 1 and used for being attached to and limited by the angular positioning surface to angularly position the guide blade, a second positioning component 3 used for being abutted to the tip hole to axially position the guide blade, a first measuring component 5 installed on the first positioning component 1 and used for being inserted into the blade body slot, A second measuring component 6 mounted on the second positioning component 3 for insertion into the blade body groove of the guide blade and a third measuring component for measuring the gap between the blade body groove side wall and the first measuring component 5 and the gap between the blade body groove side wall and the second measuring component 6, respectively. Specifically, the blade body slot eccentricity measuring device for the guide blade is characterized in that a first positioning component 1 and a second positioning component 3 are installed along the length direction, an angular positioning component 2 is installed on the first positioning component 1, then the first positioning component 1 and a first shaft diameter of the guide blade are in inserted fit to complete radial positioning and axial limiting of a first end of the guide blade, the angular positioning component 2 is attached to an angular positioning surface on the first shaft diameter to complete angular positioning of the guide blade, the second positioning component 3 abuts against a tip hole of the guide blade to complete axial positioning of a second end of the guide blade, and accordingly the guide blade is quickly positioned, the positioning device is simple in structure and small in size relative to an existing positioning device, can be installed around a guide blade machining device, and can be clamped and positioned in real time after the blade is machined, preparing for measurement; the first measuring component 5 is arranged on the first positioning component 1, the measuring end of the first measuring component 5 is plugged into the blade body groove, the gap A and the gap B between the measuring end of the first measuring component 5 and the side walls at two sides of the blade body groove are respectively measured through the third measuring component, the blade body groove eccentric distance C of the guide blade is obtained through the gap A and the gap B, the second measuring component 6 is arranged on the second positioning component 3, the measuring end of the second measuring component 6 is plugged into the blade body groove, the gap E and the gap F between the measuring end of the second measuring component 6 and the side walls at two sides of the blade body groove are respectively measured through the third measuring component, the eccentric distance C is verified according to the gap E and the gap F, the measuring result is ensured to be accurate, compared with the existing measuring device, the measuring device of the scheme has the advantages of simple structure, quick and convenient measurement and accurate measuring result, the measuring efficiency is high, and the method is suitable for measuring the guide vanes processed in batches. Optionally, the measuring device further comprises a positioning base 4, the first positioning assembly 1 and the second positioning assembly 3 are arranged on the positioning base 4 at intervals along the length direction, and the measuring device is of an integrated integral structure and is convenient to carry and transport.
As shown in fig. 3 to 5, in the present embodiment, the first positioning assembly 1 includes a first positioning seat 11, and the first positioning seat 11 is provided with a radial positioning hole 12 along a length direction for being inserted into and matched with the first axial diameter to perform radial positioning and axial limiting on the guide blade. Specifically, the first axial diameter of the guide blade is inserted into the radial positioning hole 12 along the length direction, the hole wall of the radial positioning hole 12 radially positions the guide blade, and the outer wall of the first positioning seat 11 provided with the radial positioning hole 12 axially limits the guide blade.
As shown in fig. 1 to 5, in this embodiment, the first positioning seat 11 is concavely provided with an angular installation groove 13 communicating with the radial positioning hole 12 along the width direction, the angular positioning assembly 2 includes an angular positioning block movably installed in the angular installation groove 13 along the width direction, and the angular positioning block is provided with an angular positioning groove concavely formed along the length direction and used for being attached to and limited by an angular positioning surface so as to angularly position the guide vane. Specifically, the angular positioning block is movably installed in the angular positioning groove along the width direction, so that the angular positioning groove and the radial positioning hole 12 are coaxially arranged, and then the angular positioning groove and the angular positioning surface are attached to be limited, so that the angular positioning of the guide vane is completed. Optionally, the two ends of the length direction of the bottom of the angular positioning groove are provided with first clamping grooves formed by inclined depressions, the angular positioning block is provided with a first clamping table formed by inclined extension and used for clamping and matching with the first clamping grooves, and the first clamping table is clamped through the first clamping grooves, so that the angular positioning block can only move in the width direction in the angular positioning groove.
As shown in fig. 1-2, in the present embodiment, a first sliding groove 14 is concavely disposed on a top portion of the first positioning seat 11 along a length direction, the first measuring assembly 5 includes a first sliding block movably mounted in the first sliding groove 14 along the length direction, and an end portion of the first sliding block, which is close to the second positioning assembly 3, is provided with a first measuring portion 51 extending along a height direction and formed for being inserted into the blade groove. Specifically, the first sliding block is movably installed in the first sliding groove 14 along the length direction, and the first sliding block is movable along the length direction so that the first measuring portion 51 is inserted into the blade groove. Optionally, two ends of the bottom of the first sliding groove 14 in the width direction are provided with second clamping grooves formed by extending in an inclined manner, the first slider is provided with second clamping platforms formed by extending in an inclined manner and used for clamping and matching with the second clamping grooves, and the second clamping platforms are clamped through the second clamping grooves, so that the first slider can only move in the first sliding groove 14 in the length direction.
As shown in fig. 1-2, in the present embodiment, the second positioning assembly 3 includes a second positioning seat 31 that is spaced from the first positioning seat 11 along the length direction, an apex rod 32 that is movably mounted on the second positioning seat 31 along the length direction and is used for abutting against the apex hole to axially position the guide vane, and a tacking screw 33 that is movably mounted on the second positioning seat 31 along the width direction and is used for fixing or loosening the apex rod 32. Specifically, the preset distance is greater than the length of the guide blade in the length direction, the ejector pin 32 abuts against the ejector hole in the length direction, the ejector pin is fixed through the set screw 33 to complete axial positioning of the guide blade, and after positioning and measurement of the guide blade are completed, the set screw is rotated to loosen the ejector pin 32 so as to take out the guide blade.
As shown in fig. 1-2, in the present embodiment, the center rod 32 is radially provided with a strip-shaped connecting slot 321 arranged along the length direction for connecting with the fastening screw 33. Specifically, since the nose bar 32 moves in the length direction on the second positioning seat 31 and the clincher screw 33 moves in the width direction on the second positioning seat 31 to loosen or fix the nose bar, the nose bar 32 is fixed after moving in the length direction by the engagement of the bar-shaped coupling groove 321 with the clincher screw 33.
As shown in fig. 1, fig. 2 and fig. 6, in this embodiment, the second sliding groove 34 is concavely disposed on the top of the second positioning seat 31 along the length direction, the second measuring assembly 6 includes a second sliding block movably mounted in the second sliding groove 34 along the length direction, and a second measuring portion 61 extending along the height direction and formed at an end of the second sliding block close to the first positioning assembly 1 and used for being inserted into the blade groove is disposed at the end of the second sliding block. Specifically, the second sliding block is movably installed in the second sliding groove 34 along the length direction, and the second sliding block is movable along the length direction so that the second measuring portion 61 is inserted into the blade groove. Optionally, two ends of the bottom of the second sliding groove 34 in the width direction are provided with third clamping grooves formed by extending in an inclined manner, the second slider is provided with third clamping platforms formed by extending in an inclined manner and used for clamping and matching with the third clamping grooves, and the third clamping platforms are clamped by the third clamping grooves, so that the third slider can only move in the second sliding groove 34 in the length direction.
As shown in fig. 1-2, in the present embodiment, the first measuring assembly 5 is provided with a first connecting hole 52 formed along the width direction in a concave manner, and a first connecting rope passing through the first connecting hole 52 and connected to the first positioning assembly 1. Specifically, the first connection rope passes through the first connection hole 52 to fix the first measuring unit 5 on the first positioning unit 1, so as to prevent the first measuring unit 5 from being lost during the transportation process.
As shown in fig. 1-2, in the present embodiment, the second measuring component 6 includes a second connecting hole 62 formed by being recessed along the width direction, and a second connecting rope passing through the second connecting hole 62 and connected to the second positioning component 3. Specifically, the second connecting rope passes through the second connecting hole 62 to fix the second measuring unit 6 on the second positioning unit 3, so as to prevent the second measuring unit 6 from being lost during the transportation process.
In this embodiment, the third measuring component includes a feeler gauge which is inserted between the first measuring component 5 and the side walls of the blade groove to measure the gap between the first measuring component 5 and the side walls of the blade groove. Specifically, the clearance A and the clearance B between the first measuring component 5 and the side walls on the two sides of the blade body groove are respectively measured by plugging a feeler gauge between the first measuring component 5 and the side walls on the two sides of the blade body groove, and then the blade body groove eccentricity C of the guide blade is obtained according to the clearance A and the clearance B.
In this embodiment, the third measuring component includes a feeler gauge which is respectively inserted between the second measuring component 6 and the side walls of the two sides of the blade body groove to measure the gap between the second measuring component 6 and the side walls of the two sides of the blade body groove. Specifically, plug in respectively through the clearance gauge in order to measure clearance E and clearance F between second measuring component 6 and the blade groove both sides lateral wall, then according to clearance E and clearance F to verifying whether blade groove eccentricity C measures accurately.
The blade body groove eccentricity measuring method for the guide blade in the embodiment adopts the blade body groove eccentricity measuring device for the guide blade, and comprises the following steps of: the first positioning component 1 and the second positioning component 3 are arranged along the length direction, and then the angular positioning component 2 is arranged on the first positioning component 1; the first positioning assembly 1 is in plug-in fit with the first axial diameter to complete radial positioning and axial limiting of the guide blade, the angular positioning assembly 2 is attached to an angular positioning surface to limit the angular positioning of the guide blade, and the positioning assembly abuts against the tip hole to complete axial positioning of the guide blade; installing a first measuring component 5 on the first positioning component 1, plugging a measuring end of the first measuring component 5 into the blade groove, and then respectively measuring a gap A and a gap B between the first measuring component 5 and the side walls of the two sides of the blade groove through a third measuring component; obtaining C according to the clearance A, the clearance B and a calculation formula (A-B)/2, wherein C is the blade body slot eccentricity of the guide blade; mounting a second measuring component 6 on the second positioning component 3, plugging a measuring end of the second measuring component 6 into the blade groove, and measuring a gap E and a gap F between the second measuring component 6 and the side walls of the two sides of the blade groove through a third measuring component; verifying the deviation distance C according to the clearance E, the clearance F and a calculation formula (E-F)/2 ═ C; and acquiring the blade body groove eccentricity D of the guide blade, which meets the design requirement, and judging whether the blade body groove eccentricity of the guide blade meets the design requirement according to the C and the D.
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 (10)
1. The utility model provides a blade groove eccentricity measuring device for guide blade, be used for measuring blade groove eccentricity after clamping location to guide blade, guide blade's both ends are equipped with respectively and extend first diameter of shaft and the second diameter of shaft that forms along length direction, the lateral wall of the free end of first diameter of shaft is equipped with the angular positioning face that radially sinks to form, the second diameter of shaft is equipped with along the sunken apex hole that forms of length direction, a serial communication port, measuring device is including being used for with first diameter of shaft grafting cooperation in order to carry out radial positioning and axial spacing to guide blade, set up on first positioning assembly (1) be used for with angular positioning face laminating spacing in order to carry out angular positioning to guide blade angular positioning subassembly (2), be used for supporting apex hole in order to carry out axial positioning's second positioning assembly (3) to guide blade, install on first positioning assembly (1) and be used for inserting first measuring component (5) in the blade groove, A second measuring component (6) which is arranged on the second positioning component (3) and is used for being inserted into the blade body groove of the guide blade, and a third measuring component which is used for respectively measuring the gap between the side wall of the blade body groove and the first measuring component (5) and the gap between the side wall of the blade body groove and the second measuring component (6).
2. The blade body groove eccentricity measuring device for the guide blade according to claim 1, wherein the first positioning assembly (1) comprises a first positioning seat (11), and the first positioning seat (11) is provided with a radial positioning hole (12) along the length direction, wherein the radial positioning hole is used for being in plug-in fit with the first axial diameter so as to radially position and axially limit the guide blade.
3. The blade body groove eccentricity measuring device for the guide blade is characterized in that the first positioning seat (11) is concavely provided with an angular mounting groove (13) communicated with the radial positioning hole (12) along the width direction, the angular positioning assembly (2) comprises an angular positioning block movably mounted in the angular mounting groove (13) along the width direction, and the angular positioning block is provided with an angular positioning groove which is concavely formed along the length direction and is used for being attached and limited with an angular positioning surface to angularly position the guide blade.
4. The blade body slot eccentricity measuring device for the guide blade according to claim 2, wherein the top of the first positioning seat (11) is recessed with a first sliding slot (14) along the length direction, the first measuring assembly (5) comprises a first sliding block movably mounted in the first sliding slot (14) along the length direction, and the end of the first sliding block close to the second positioning assembly (3) is provided with a first measuring part (51) extending along the height direction and used for being inserted into the blade body slot.
5. The blade body groove eccentricity measuring device for the guide blade according to claim 2, wherein the second positioning assembly (3) comprises a second positioning seat (31) which is kept at a predetermined distance from the first positioning seat (11) along the length direction, a tip rod (32) which is movably mounted on the second positioning seat (31) along the length direction and used for abutting against the tip hole to axially position the guide blade, and a tacking screw (33) which is movably mounted on the second positioning seat (31) along the width direction and used for fixing or loosening the tip rod (32).
6. The blade body groove eccentricity measuring device for the guide blade according to claim 5, wherein the nose bar (32) is provided with a strip-shaped connecting groove (321) arranged along the length direction along the radial direction for connecting with the tacking screw (33).
7. The blade body slot eccentricity measuring device for the guide blade according to claim 5, wherein the second positioning seat (31) is provided with a second sliding slot (34) at the top in a concave manner along the length direction, the second measuring assembly (6) comprises a second sliding block movably mounted in the second sliding slot (34) along the length direction, and the end part of the second sliding block close to the first positioning assembly (1) is provided with a second measuring part (61) extending along the height direction and used for being inserted into the blade body slot.
8. The blade body groove eccentricity measuring device for the guide blade according to any one of claims 1 to 7, wherein the first measuring unit (5) is provided with a first connecting hole (52) formed by recessing in the width direction and a first connecting rope passing through the first connecting hole (52) and connected to the first positioning unit (1); and/or
The second measuring component (6) comprises a second connecting hole (62) formed by sinking along the width direction and a second connecting rope which penetrates through the second connecting hole (62) and is connected with the second positioning component (3).
9. The blade groove eccentricity measuring device for a guide blade according to any one of claims 1 to 7, wherein the third measuring unit includes a feeler for being inserted between the first measuring unit (5) and the side walls on both sides of the blade groove, respectively, to measure a gap between the first measuring unit (5) and the side walls on both sides of the blade groove; and/or
The third measuring component comprises a clearance gauge which is used for being respectively plugged between the second measuring component (6) and the side walls of the two sides of the blade groove so as to measure the clearance between the second measuring component (6) and the side walls of the two sides of the blade groove.
10. A blade body groove eccentricity measuring method for a guide blade, characterized in that the blade body groove eccentricity measuring device for a guide blade according to any one of claims 1 to 9 is used, comprising the steps of:
the first positioning component (1) and the second positioning component (3) are arranged along the length direction, and then the angular positioning component (2) is arranged on the first positioning component (1);
the first positioning assembly (1) is in plug-in fit with the first axial diameter to complete radial positioning and axial limiting of the guide blade, the angular positioning assembly (2) is attached to the angular positioning surface to limit the angular positioning of the guide blade, and the positioning assembly abuts against the tip hole to complete axial positioning of the guide blade;
installing a first measuring component (5) on a first positioning component (1), plugging a measuring end of the first measuring component (5) into a blade groove, and then respectively measuring a gap A and a gap B between the first measuring component (5) and the side walls of the two sides of the blade groove through a third measuring component;
obtaining C according to the clearance A, the clearance B and a calculation formula (A-B)/2, wherein C is the blade body slot eccentricity of the guide blade;
installing a second measuring component (6) on a second positioning component (3), plugging a measuring end of the second measuring component (6) into the blade groove, and then measuring a gap E and a gap F between the second measuring component (6) and the side walls of the two sides of the blade groove through a third measuring component;
verifying the deviation distance C according to the clearance E, the clearance F and a calculation formula (E-F)/2 ═ C;
and acquiring the blade body groove eccentricity D of the guide blade, which meets the design requirement, and judging whether the blade body groove eccentricity of the guide blade meets the design requirement according to the C and the D.
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