CN108548477B - Die forging rotor blade pouring head sleeve position measuring tool and measuring method - Google Patents
Die forging rotor blade pouring head sleeve position measuring tool and measuring method Download PDFInfo
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- CN108548477B CN108548477B CN201810539455.9A CN201810539455A CN108548477B CN 108548477 B CN108548477 B CN 108548477B CN 201810539455 A CN201810539455 A CN 201810539455A CN 108548477 B CN108548477 B CN 108548477B
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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 provides a die forging rotor blade casting head sleeve position measuring tool and a die forging rotor blade casting head sleeve position measuring method, which solve the problem of measuring the position of a die forging rotor blade head sleeve behind a head sleeve, improve the qualification rate of the die forging rotor blade head sleeve position, and further improve the blade machining consistency. The device comprises a base and a position measuring tool, wherein the position measuring tool is a dial indicator or a dial indicator; the base is provided with a fixing device for vertically fixing the blade to be processed and a gauge block, and the gauge block is provided with a guide rail. The blade of treating that will pour into a mould and have the headgear is vertical to be fixed on the base through fixing device, inserts the measuring stick in the guide rail, and the measuring head and the headgear surface contact of measuring stick are from last down sliding, observe and take notes the table value, if the table value is qualified at the tolerance range of headgear position then headgear position, otherwise the headgear position is unqualified.
Description
Technical Field
The invention belongs to the technical field of machining of aero-engine parts, relates to a measuring tool for a casting process of a die forging rotor blade of an aero-engine, and particularly relates to a measuring tool and a measuring method for a position of a casting head sleeve of the die forging rotor blade.
Background
At present, for the processing of the aeroengine die forging rotor blade profile, the blade profile is milled by taking a part tenon and a process boss of a blade tip as references. The mechanical processing procedure aiming at the die forging rotor blade profile has three steps, which are respectively as follows: removing large allowance of rough milling molded surface, semi-finish milling molded surface and finish milling molded surface. And after the die forging rotor blade is machined, measuring the molded surface position by using the process bosses of the tenon and the blade tip. Because the die forging rotor blade is a thin-wall part, the blade tip and other parts of the blade can deform after three times of milling, and the measured qualified rate of the die forging rotor blade is very low after the die forging rotor blade is machined. In order to ensure the qualification rate of the die-forged rotor blade, at present, after a machining process, a manual polishing process is performed on a part. The allowance between the finish-milled profile and the die-forged rotor blade is 0.15-0.35, and the manual glazing removal allowance is large, so that the requirement on the skill level of an operator is very high, and the consistency of parts is poor. Therefore, after rough milling processing is carried out on the die forging rotor blade, casting processing is carried out on the blade tip part of the blade, and then subsequent semi-finish milling and finish milling processing are carried out after casting so as to solve the problem that the blade tip is deformed. When the blade tip is poured, the head cover is worn on the blade tip for pouring, whether the position of the head cover is qualified or not directly determines whether the quality of the blade tip pouring is qualified or not, and therefore the position of the head cover needs to be measured.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a die forging rotor blade pouring head sleeve position measuring tool and a measuring method. The problem of die forging rotor blade behind the headgear, headgear position measurement is solved, the qualification rate in die forging rotor blade headgear position has been improved to the uniformity of headgear has been improved, and then the uniformity of blade processing is improved.
The invention is realized by the following technical scheme:
a die forging rotor blade pouring head sleeve position measuring tool comprises a base and a position measuring tool, wherein the position measuring tool is a dial indicator or a dial indicator; the base is provided with a fixing device for vertically fixing the blade to be processed, the base is also provided with a first pair of meter blocks, and the first pair of meter blocks are provided with first guide rails;
during the use, in the position measurement instrument measuring stick inserted first guide rail, the measuring head of measuring stick contacts with the headgear outer surface of arranging in on waiting to process the blade apex, and the measuring stick can reciprocate in first guide rail in order to measure the position of headgear.
Preferably, the first pair of gauge blocks is positioned on the side of the suction edge or the exhaust edge of the blade to be processed.
The blade processing device further comprises a second pair of meter blocks, wherein the second pair of meter blocks are positioned on one side of a blade basin or a blade back of the blade to be processed, and second guide rails are arranged on the second pair of meter blocks;
during the use, position measuring instrument's measuring stick inserts in the second guide rail, the measuring head of measuring stick with arrange in and wait to process the headgear outer surface contact on the blade apex, and the measuring stick can reciprocate in the second guide rail in order to measure the position of headgear.
Preferably, the fixing device comprises a positioning block, a pressing plate and a pressing plate adjusting device which are arranged on the base, the positioning block and the pressing plate are arranged oppositely, grooves matched with the tenons of the blades to be machined are formed in the surfaces, opposite to each other, of the positioning block and the pressing plate, and the pressing plate adjusting device is used for adjusting the distance between the pressing plate and the positioning block so as to be used for clamping or loosening the tenons of the blades to be machined.
Further, the pressing plate adjusting device comprises a first cover plate and a position-adjustable handle, the first cover plate is fixed on the base and located above the pressing plate, a convex edge is arranged at one end, opposite to the groove, of the pressing plate, one end of the position-adjustable handle penetrates through the convex edge of the pressing plate and is in threaded connection with the first cover plate, and the distance between the pressing plate and the positioning block can be adjusted by adjusting the position-adjustable handle.
Preferably, still including table seat and the apron that is used for centre gripping position measuring tool, be equipped with the recess on the table seat, the measuring stick is arranged in the recess of table seat, and the apron is arranged in the recess top and is passed through screw and table seat fixed connection.
Preferably, the device further comprises a meter aligning frame used for zero adjustment of the position measuring tool, the meter aligning frame is of a U-shaped structure, and when the device is used, the measuring rod 18 extends into the U-shaped opening to zero the position measuring tool.
Furthermore, the meter-aligning pin is arranged on the base, penetrates through the bottom of the meter-aligning frame and fixes the meter-aligning frame on the base, and the opening of the meter-aligning frame faces upwards.
The utility model provides a die forging rotor blade pouring headgear position measurement method, is based on above-mentioned measurement frock, will pour into a mould and have the blade of treating of headgear to vertically fix on the base, insert the measuring stick in first guide rail, the measuring head and the headgear outer surface contact of measuring stick from last down sliding, observe and take notes the value, if the value is qualified in the tolerance range of headgear position then headgear position, otherwise the headgear position is unqualified.
Preferably, the position measuring tool is zeroed prior to measurement.
Compared with the prior art, the invention has the following beneficial technical effects:
the measuring tool is provided with a fixing device for fixing a blade to be processed and a pair block provided with a guide rail, when the measuring tool is used, the blade to be processed, which is poured with a head sleeve, is fixed by the fixing device, a measuring rod of a dial indicator or a dial indicator is inserted into the guide rail, the measuring head is contacted with the outer surface of the head sleeve, the measuring rod slides up and down along the guide rail under the condition of keeping the contact of the measuring head and the outer surface of the head sleeve, the value of the gauge is observed at the moment, if the value of the gauge is within the tolerance range of the position of the head sleeve, the position of the head sleeve is qualified, if the value of the gauge is beyond the tolerance range, the head. Therefore, the device can measure whether the position of the head sleeve is qualified or not, and the head sleeve is poured again when the position of the head sleeve is found to be unqualified, so that the qualification rate of the position of the head sleeve is improved, and the qualification rate of the subsequently poured blade is improved. And the blade to be processed is vertically arranged in a fixed mode, so that the measurement error caused by the gravity is effectively avoided, the qualification rate of the position measurement of the die forging rotor blade head sleeve is improved, and the pouring consistency of the die forging rotor blade head sleeve is further improved.
Furthermore, the pair of gauge blocks are positioned on one side of the air inlet edge or the air outlet edge of the blade, and the deviation value of the poured head cover in the air inlet and air outlet edge direction can be measured.
Furthermore, still set up the table piece that is located leaf basin or leaf back one side simultaneously, can measure the head cover of having poured to the offset value of leaf basin, leaf back direction to obtain the head cover in the slope deviation condition of direction all around, the more clear positional information who knows the head cover.
Furthermore, the position of the pressing plate can be adjusted by the position-adjustable handle, so that parts with different sizes can be fixed between the pressing plate and the positioning block, and the application range of the positioning block is widened.
Further, arrange the measuring stick in the gauge stand, the screw through adjusting the gauge stand length that the measuring stick stretches out to can measure the part that uses not unidimensional headgear, widen application range.
Drawings
FIG. 1 is a top view of a measurement tool of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 in the direction A-A;
fig. 3 is a schematic cross-sectional view of fig. 1 in the direction B-B.
FIG. 4 is a schematic view of a watch base according to the present invention.
Wherein: 1 is a base; 2 is a pressing plate; 3 is a first cover plate; 4 is an adjustable handle; 5 is a positioning plate; 6 is a positioning block; 7 is a first table block; 7-1 is a first guide rail; 8 is a second pair of table blocks; 8-1 is a second guide rail; 9 is a first positioning pin; 10 is a process ball; 11 is a second positioning pin; 12 is a first screw; 13 is a third positioning pin; 14 is a second screw; 15 is a blade to be processed; 16 is a head cover; 17 is a third screw; 18 is a measuring rod; 19 is a gauge stand; 20 is a fourth screw; 21 is a second cover plate; 22 is a meter stand; and 23 is a counter pin.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The die forging rotor blade pouring measurement tool comprises a base 1 and a position measurement tool, wherein the position measurement tool is a dial indicator or a dial indicator, and a fixing device for fixing a blade 15 to be processed, a first meter aligning block 7, a second meter aligning block 8 and a meter value correcting mechanism are arranged on the base 1.
The fixing device comprises a positioning plate 5, a positioning block 6, a pressing plate 2, a first cover plate 3 and a position-adjustable handle 4, the positioning block 6 is fixed on the base 1 through a first positioning pin 9 and a third screw 17, the pressing plate 2 is arranged on the base 1 and is arranged opposite to the positioning block 6, and grooves matched with tenons of the blades 15 to be processed are formed in the surfaces, opposite to the positioning block 6, of the pressing plate 2. The positioning plate 5 is located between the positioning block 6 and the pressing plate 2 and fixed on the base 1 through the second screw 14, and the positioning plate 5 is used for positioning the blade 15 to be processed in a proper position when the blade is placed. The first cover plate 3 is fixed on the base 1 by a first screw 12 and a third positioning pin 13, and the first cover plate 3 is located above the pressing plate 2. The pressing plate 2 is embedded into the position-adjustable handle 4 through the groove and connected with the first cover plate 3 through threads, a convex edge is arranged at one end, opposite to the groove, of the pressing plate 2, and one end of the position-adjustable handle 4 penetrates through the convex edge of the pressing plate 2 and is connected with the first cover plate 3 through threads. The distance between the pressure plate 2 and the tenon of the blade 15 to be processed can be adjusted through the position-adjustable handle 4, so that the blade 15 to be processed is clamped. The position-adjustable handle 4 can adjust the position of the pressure plate 2, so that blades 15 to be processed with different sizes can be fixed between the pressure plate 2 and the positioning block 6, and the blade positioning device has a wider application range.
The first pair of gauge blocks 7 are positioned on one side of the air inlet edge or the air exhaust edge of the blade 15 to be processed, and first guide rails 7-1 for guiding the measuring rods 18 to slide up and down are arranged on the first pair of gauge blocks 7; when the device is used, the measuring rod 18 is inserted into the first guide rail 7-1, a measuring head of the measuring rod 18 is in contact with the outer surface of the head sleeve 16 arranged on the blade tip of the blade 15 to be processed, and the measuring rod 18 can move up and down in the first guide rail 7-1 to measure the position of the head sleeve 16. The second pair of meter blocks 8 are positioned on one side of a blade basin or a blade back of the blade 15 to be processed, and a second guide rail 8-1 for guiding the measuring rod 18 to slide up and down is arranged on the second pair of meter blocks 8; when the measuring device is used, the measuring rod 18 is inserted into the second guide rail 8-1, a measuring head of the measuring rod 18 is in contact with the outer surface of the head sleeve 16 arranged on the blade tip of the blade 15 to be processed, and the measuring rod 18 can move up and down on the second guide rail 8-1 to measure the position of the head sleeve 16. The deviation value of the poured head cover 16 in the air inlet and outlet side direction can be measured by setting two pairs of gauge blocks, and the deviation value of the poured head cover 16 in the leaf basin and leaf back directions can be measured simultaneously, so that the inclination deviation condition of the head cover 16 in the peripheral direction is obtained, and the position information of the head cover 16 can be more clearly understood.
As shown in fig. 3, the position measuring tool is clamped and fixed by a clamping device, the clamping device includes a gauge stand 19 and a second cover plate 21, a groove is formed on the gauge stand 19, the measuring rod 18 is disposed in the groove of the gauge stand 19, and the second cover plate 21 is disposed above the groove and fixedly connected with the gauge stand 19 through a fourth screw 20, so as to clamp and fix the position measuring tool. The length of the extension of the measuring rod 18 can be adjusted by adjusting the fourth screw 20 of the gauge stand 19, so that the blades 15 to be processed using different size head covers 16 can be measured, and the application range is wide. When the measuring instrument is used, the measuring rod 18 is inserted into the first guide rail 7-1, the measuring head is contacted with the outer surface of the head sleeve 16, and the side surface of the gauge stand 19 is contacted with the outer side surfaces of the first pair of gauge blocks 7, so that the measuring rod 18 can integrally slide up and down in the guide rail, and the problem of inclination of the measuring rod 18 cannot occur.
Before measurement, a dial indicator or a dial indicator is subjected to zero adjustment, as shown in fig. 4, the gauge value correcting mechanism comprises a gauge stand 22 and a gauge stand 23, the gauge stand 22 is in a U-shaped structure, the gauge stand 22 is fixed on the base 1 by the gauge stand 23 penetrating through the bottom of the gauge stand 22, and the opening of the gauge stand 22 faces upwards. The distance between the upper surface of the counter pin 23 and the end surface of the opening end of the counter frame 22 is equal to the designed distance between the measuring point on the head sleeve 16 and the outer side surface of the counter block. Before the part is measured, a table value correcting mechanism is used to adjust the table value to zero.
The measuring tool is also provided with a process ball 10, and the process ball 10 is a zero point set during tool design and used for calibrating whether the position and the size of each part are correct.
The use method of the die forging rotor blade pouring head sleeve position measuring tool comprises the following steps: placing the end face of one end of a tenon of a blade 15 to be processed on the positioning plate 5, so that the blade 15 to be processed is vertically placed, positioning the blade 15 to be processed through the second positioning pin 11, and positioning the tenon between the positioning block 6 and the pressing plate 2; the right hand rotates the position-adjustable handle 4 clockwise to enable the pressing plate 2 to be close to and cling to one side of the tenon of the blade 15 to be machined, so that the blade 15 to be machined is clamped and fixed between the positioning block 6 and the pressing plate 2, the left hand gently shakes the head sleeve 16, and whether the blade 15 to be machined is clamped or not is judged. After the blade 15 to be machined is clamped, the gauge stand 19 is placed on the gauge stand 22, the tip of the measuring rod 18 is in contact with the upper surface of the gauge pin 23, and the gauge value is adjusted to zero. After the blade 15 to be processed is fixed on the device through the procedures and the value of a dial indicator or a dial indicator is corrected, the measuring rod 18 is inserted into the first guide rail 7-1 of the first pair of gauge blocks 7, the measuring head of the measuring rod 18 is in contact with the outer surface of the head sleeve 16 and slides from top to bottom, the value of the gauge is observed and recorded, if the value of the gauge changes within the tolerance range of the position of the head sleeve, the position of the head sleeve 16 is qualified, otherwise, the head sleeve has deviation in the air inlet and outlet edge direction and is unqualified; then the measuring rod 18 is inserted into the second guide rail 8-1 of the second pair of gauge blocks 8, the measuring head of the measuring rod 18 contacts with the outer surface of the head cover 16, the head cover slides from top to bottom, the gauge value is observed and recorded, if the gauge value changes within the tolerance range of the position of the head cover, the position of the head cover 16 is qualified, otherwise, the head cover has deviation in the directions of the leaf basin and the leaf back, and the head cover is unqualified.
After the measurement is finished, if the position of the head sleeve 16 is qualified, performing subsequent procedures, namely pouring the head sleeve on the blade tip of the blade 15 to be processed; if the position of the head cover 16 is not qualified, the head cover 16 needs to be detached, the position of the head cover 16 is adjusted, then the head cover 16 is connected with the tip part of the blade 15 to be processed in a pouring mode, position measurement is carried out again until the position of the head cover is qualified, and then follow-up procedures are carried out.
The blade 15 to be processed with the head sleeve 16 is clamped and fixed on a measuring tool, a measuring rod 18 of a dial indicator or a dial indicator is inserted into a guide rail, a measuring head is contacted with the outer surface of the head sleeve 16, the measuring rod 18 slides up and down along the guide rail under the condition of keeping the contact of the measuring head and the outer surface of the head sleeve 16, the change of the value of the measuring rod is observed, if the value of the measuring rod is within the tolerance range of the position of the head sleeve, the position of the head sleeve 16 is qualified, if the value of the measuring rod is beyond the tolerance range, the head sleeve 16 is inclined, the position is unqualified. Therefore, the method can measure whether the position of the head sleeve 16 is qualified or not, and the head sleeve is poured again when the position of the head sleeve 16 is found to be unqualified, so that the qualification rate of the position of the head sleeve 16 is improved, and the qualification rate of the subsequently poured blade is improved. And the blade 16 to be processed is vertically arranged in a fixed mode, so that the measurement error caused by the gravity of the earth is effectively avoided, the qualification rate of the position measurement of the die forging rotor blade head sleeve is improved, and the pouring consistency of the die forging rotor blade head sleeve is further improved.
Claims (6)
1. A die forging rotor blade pouring head cover position measuring tool is characterized by comprising a base (1) and a position measuring tool, wherein the position measuring tool is a dial indicator or a dial indicator; a fixing device for vertically fixing the blade (15) to be processed is arranged on the base (1), a first pair of gauge blocks (7) are also arranged on the base (1), and first guide rails (7-1) are arranged on the first pair of gauge blocks (7);
when the position measuring tool is used, a measuring rod (18) of the position measuring tool is inserted into the first guide rail (7-1), a measuring head of the measuring rod (18) is in contact with the outer surface of a head sleeve (16) arranged on the blade tip of a blade (15) to be processed, and the measuring rod (18) can move up and down in the first guide rail (7-1) to measure the position of the head sleeve (16);
the fixing device comprises a positioning block (6), a pressing plate (2) and a pressing plate adjusting device, wherein the positioning block (6), the pressing plate (2) and the pressing plate adjusting device are arranged on the base (1), the positioning block (6) and the pressing plate (2) are arranged oppositely, grooves matched with tenons of the blades (15) to be processed are formed in the surfaces of the positioning block (6) and the pressing plate (2) opposite to each other, and the pressing plate adjusting device is used for adjusting the distance between the pressing plate (2) and the positioning block (6) so as to be used for clamping;
the pressing plate adjusting device comprises a first cover plate (3) and an adjustable handle (4), the first cover plate (3) is fixed on the base (1) and is positioned above the pressing plate (2), a convex edge is arranged at one end, opposite to the groove, of the pressing plate (2), one end of the adjustable handle (4) penetrates through the convex edge of the pressing plate (2) to be in threaded connection with the first cover plate (3), and the distance between the pressing plate (2) and the positioning block (6) can be adjusted by adjusting the adjustable handle (4); the first cover plate (3) and the pressure plate (2) are arranged in a clearance way, and the adjustable handle (4) and the convex edge of the pressure plate (2) are arranged in a clearance way;
the fixing device also comprises a positioning plate (5) arranged on the base (1), the positioning plate (5) is positioned between the positioning block (6) and the pressing plate (2) and is fixed on the base (1) through a screw, and the positioning plate (5) is used for positioning the blade (15) to be processed so as to be placed at a proper position when the blade is placed;
the device also comprises a meter aligning frame (22) used for zeroing the position measuring tool, the meter aligning frame (22) is of a U-shaped structure, and when the device is used, the measuring rod (18) extends into the U-shaped opening to be zeroed; the base is characterized by further comprising a meter aligning pin (23), wherein the meter aligning pin (23) penetrates through the bottom of the meter aligning frame (22) to fix the meter aligning frame (22) on the base (1), and the opening of the meter aligning frame (22) is upward;
the distance between the upper surface of the meter aligning pin (23) and the end surface of the open end of the meter aligning frame (22) is equal to the design distance between the measuring point on the head sleeve (16) and the outer side surface of the first meter block (7).
2. The swaged rotor blade casting head sleeve position measuring tool according to claim 1, wherein the first pair of gauge blocks (7) is located on the side of a suction edge or a discharge edge of the blade (15) to be machined.
3. The die forging rotor blade pouring head sleeve position measuring tool according to claim 2, further comprising a second pair of gauge blocks (8), wherein the second pair of gauge blocks (8) are located on one side of a blade basin or a blade back of a blade (15) to be processed, and second guide rails (8-1) are arranged on the second pair of gauge blocks (8);
when the position measuring tool is used, the measuring rod (18) of the position measuring tool is inserted into the second guide rail (8-1), the measuring head of the measuring rod (18) is in contact with the outer surface of the head sleeve (16) arranged on the blade tip of the blade (15) to be processed, and the measuring rod (18) can move up and down on the second guide rail (8-1) to measure the position of the head sleeve (16).
4. The die forging rotor blade pouring head cover position measuring tool is characterized by further comprising a gauge stand (19) and a cover plate, wherein the gauge stand (19) is used for clamping a position measuring tool, a groove is formed in the gauge stand (19), the measuring rod (18) is placed in the groove of the gauge stand (19), and the cover plate is placed above the groove and fixedly connected with the gauge stand (19) through a screw.
5. A die forging rotor blade pouring head cover position measuring method is based on the measuring tool according to claim 1, and is characterized in that a blade (15) to be processed, poured with a head cover (16), is vertically fixed on a base (1) through a fixing device, a measuring rod (18) is inserted into a first guide rail (7-1), a measuring head of the measuring rod (18) is in contact with the outer surface of the head cover (16), the measuring head slides from top to bottom, a gauge value is observed and recorded, if the gauge value is within the tolerance range of the head cover position, the head cover position is qualified, and otherwise, the head cover position is unqualified.
6. The method of claim 5, wherein the position measurement tool is zeroed prior to measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810539455.9A CN108548477B (en) | 2018-05-30 | 2018-05-30 | Die forging rotor blade pouring head sleeve position measuring tool and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810539455.9A CN108548477B (en) | 2018-05-30 | 2018-05-30 | Die forging rotor blade pouring head sleeve position measuring tool and measuring method |
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| CN108548477A CN108548477A (en) | 2018-09-18 |
| CN108548477B true CN108548477B (en) | 2020-05-05 |
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| CN109099815A (en) * | 2018-09-30 | 2018-12-28 | 南京泉峰汽车精密技术股份有限公司 | Measurement in a closed series tooling |
| CN109357590A (en) * | 2018-11-14 | 2019-02-19 | 中国航发动力股份有限公司 | A kind of the detection positioning device and measurement method of blade tip height |
| CN109696106A (en) * | 2019-03-12 | 2019-04-30 | 岳阳大陆激光技术有限公司 | A kind of fan blade measuring device, method and the application in blade reparation |
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| CN102252586A (en) * | 2011-04-15 | 2011-11-23 | 许晓华 | Simple verticality detector |
| CN104190904A (en) * | 2014-08-01 | 2014-12-10 | 南京赛达机械制造有限公司 | Fixture special for steam turbine die forging blades |
| CN104197799A (en) * | 2014-08-18 | 2014-12-10 | 南京赛达机械制造有限公司 | Measuring tool positioning device special for die forging blade of steam turbine |
| CN106931846A (en) * | 2015-12-29 | 2017-07-07 | 天津宝涞精工集团股份有限公司 | A kind of large-scale housing special inspecting equipment |
| CN106767243A (en) * | 2016-11-30 | 2017-05-31 | 中航动力股份有限公司 | A kind of device for detecting the multigroup listrium wedge surface of turborotor |
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