CN215148500U

CN215148500U - Three-coordinate fixture for measuring blade root

Info

Publication number: CN215148500U
Application number: CN202121695709.XU
Authority: CN
Inventors: 黄佳伟; 张飞翔; 金海龙
Original assignee: Wuxi Hyatech Technology Co ltd
Current assignee: Wuxi Hyatech Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-14
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a gas turbine blade detects technical field, specifically is a three-dimensional anchor clamps of measurement blade root, including three-dimensional measuring machine workstation, the top of three-dimensional measuring machine workstation is provided with a plurality of groups of anchor clamps mechanisms, the anchor clamps include main part mounting bracket, material fixture and hold-down mechanism; the main part mounting bracket outer wall is provided with hold-down mechanism, and the hold-down mechanism inboard is provided with material fixture, and the inside clamp of material fixture is equipped with the blade, and the one end of blade is fixed with the blade root, the utility model discloses an anchor clamps location is accurate, and anchor clamps fix a position with six location reference points of blade for the blade is fixed the back, and the spatial position of blade root is very accurate, can measure automatically after compiling the measuring procedure, has greatly improved degree of automation, simple and direct high-efficient.

Description

Three-coordinate fixture for measuring blade root

Technical Field

The utility model relates to a gas turbine blade detects technical field, specifically is a measure three-coordinate anchor clamps of blade root.

Background

The blade in the aviation engine and the gas turbine consists of a blade root and a blade body, and because of the thin-wall characteristic of the blade body and poor structural rigidity, the blade root is generally processed by a packaging process at present, low-melting-point alloy is cast, and the blade is packaged into a regular cuboid and then the blade root is processed. After the blade root is machined, namely whether the machining of the blade root is qualified or not is detected in a three-coordinate mode in a packaging state, although the problems of poor rigidity and difficulty in machining of the blade are solved by using a packaging process, adverse factors are introduced, a packaging process needs to be added before the blade root is machined, a low-melting-point alloy removing process is added after the blade root is machined, the whole process flow is lengthened, the cost and the period are increased, the other technical scheme is that a special clamp is used for directly clamping a blade body to machine the blade root, and the problem of poor rigidity of the blade is solved on the clamp through technical means, so that the process flow is enabled to be simpler and faster undoubtedly, and the workpiece circulation is enabled to be faster.

In the prior art, the following problems exist:

(1) the existing open technology does not have a corresponding clamp to solve the problem of fixing the blades on the three-coordinate measuring machine, generally, the blades are fixed on a simple clamp by hot melt adhesive for measurement, the mode of fixing the blades has quite large defects, each blade needs to be fixed on the simple clamp by the hot melt adhesive manually, the operation is complex, the efficiency is low, and the reliability of fixation is not high.

(2) The positioning of the blade is not accurate enough, so that the automatic measurement cannot be realized, the measurement failure can be caused, the rework of the inspection can be caused, and the precious three-coordinate resources are wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a measure three-dimensional anchor clamps of blade root to solve the problem that proposes among the above-mentioned background art.

The technical scheme of the utility model is that: a three-coordinate clamp for measuring blade roots comprises a three-coordinate measuring machine working table, wherein a plurality of groups of clamp mechanisms are arranged above the three-coordinate measuring machine working table, and the clamp comprises a main body mounting frame, a material clamping mechanism and a pressing mechanism; the outer wall of the main body mounting frame is provided with a pressing mechanism, the inner side of the pressing mechanism is provided with a material clamping mechanism, a blade is clamped in the material clamping mechanism, and a blade root is fixed at one end of the blade.

Preferably, the main body mounting frame comprises a bottom plate, a vertical plate is fixed on one surface of the bottom plate through screws, positioning holes are formed in diagonal positions of the outer wall of the bottom plate respectively, and the positioning holes are mounted on the working table surface of the three-coordinate measuring machine through screws.

Preferably, the outer wall of the bottom plate is provided with a first front edge positioning pin, a second front edge positioning pin and a flow passage surface positioning pin.

Preferably, hold-down mechanism includes two guiding axles, two the riser is all passed to the one end of guiding axle, two the one end of guiding axle all is connected with the elbow clamp mounting panel through the screw, two the other end of guiding axle all overlaps and is equipped with the spring, two the other end of guiding axle all is fixed with the mounting panel through the screw.

Preferably, one side of the mounting plate, which is close to the vertical plate, is provided with symmetrical rectangular bulges, a through hole is formed in the central part of the rectangular bulges of the mounting plate, a pin is clamped in the inner side of the rectangular bulges of the mounting plate, a lever is sleeved outside the pin in a rotating manner, and the lever is positioned between the two rectangular bulges of the mounting plate.

Preferably, the central part of elbow clamp mounting panel is provided with fixed elbow and presss from both sides, and the outside that the elbow presss from both sides the mounting panel and fixes the riser is passed to the one end of dead lever on the fixed elbow presss from both sides.

Preferably, the material clamping mechanism comprises a first positioning block, a second positioning block, a first pressing block and a second pressing block, wherein the first positioning block and the first pressing block are located on the same horizontal line, the second positioning block and the second pressing block are located on the same horizontal line, the first positioning block and the second positioning block are fixed on the outer wall of the vertical plate through screws, positioning surfaces copying with the blade profiles are arranged on the surfaces, close to the blades, of the first positioning block and the second positioning block respectively, and pressing surfaces copying with the blade profiles are arranged on the surfaces, close to the blades, of the first pressing block and the second pressing block respectively.

Preferably, one side of the first pressing block and one side of the second pressing block, which are close to the mounting plate, are provided with grooves matched with the external shapes of the two ends of the lever, and the two ends of the lever are respectively connected with the first pressing block and the second pressing block through screws.

The utility model discloses an improve and provide a three-coordinate anchor clamps of measurement blade root here, compare with prior art, have following improvement and advantage:

one is as follows: the utility model has the advantages that the fixture is accurate in positioning, the fixture is positioned by six positioning reference points of the blade, so that the spatial position of the blade root is very accurate after the blade is fixed, the measurement can be automatically carried out after a measurement program is compiled, the automation degree is greatly improved, and the fixture is simple and efficient;

the second step is as follows: the utility model discloses an operation elbow presss from both sides can fast loading and unloading work piece, and the time accounts for within 5 seconds, and the centre gripping is firm, and measuring result is very stable, also can low in labor strength simultaneously, and measurement of efficiency is high, and compact structure is convenient for arrange the multistation, and a clamping is accomplished the back, can accomplish the measurement of many blades automatically, and middle unmanned on duty has reduced the manpower resources cost.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic view of the assembly of the clamp of the present invention;

FIG. 2 is a schematic structural view of a rotor blade according to the present invention;

fig. 3 is an exploded view of the clamp of the present invention;

fig. 4 is a side view of the present invention;

fig. 5 is a cross-sectional view taken along a-a in fig. 4 according to the present invention

Fig. 6 is a front view of the vertical plate of the present invention

Fig. 7 is a schematic view of the three-dimensional structure of the clamp of the present invention.

Description of reference numerals: 1. blade root, 2, blade, 3, bottom plate, 4, riser, 5, first locating block, 6, second locating block, 7, first leading edge locating pin, 8, second leading edge locating pin, 9, runner face locating pin, 10, guiding axle, 11, mounting panel, 12, lever, 13, pin, 14, first compact heap, 15, second compact heap, 16, elbow clamp mounting panel, 17, fixed elbow clamp, 18, spring, 19, three-coordinate measuring machine workstation face, 20, locating hole.

Detailed Description

The present invention will be described in detail below, and it is apparent that the technical solutions in the embodiments of the present invention are described clearly and completely. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an improve and provide a three-dimensional anchor clamps of measurement blade root here, the technical scheme of the utility model is:

the first embodiment is as follows:

as shown in fig. 1-7, a three-coordinate fixture for measuring blade root includes a three-coordinate measuring machine working table 19, a plurality of sets of fixture mechanisms are arranged above the three-coordinate measuring machine working table 19, the fixture includes a main body mounting frame, a material clamping mechanism and a pressing mechanism; the outer wall of the main body mounting frame is provided with a pressing mechanism, the inner side of the pressing mechanism is provided with a material clamping mechanism, a blade 2 is clamped inside the material clamping mechanism, and one end of the blade 2 is fixed with a blade root 1.

The main part mounting bracket comprises a bottom plate 3, a vertical plate 4 is fixed on one surface of the bottom plate 3 through screws, positioning holes 20 are respectively formed in the diagonal positions of the outer wall of the bottom plate 3, the positioning holes 20 are mounted on a workbench surface 19 of the three-coordinate measuring machine through screws, the positioning holes 20 of the structure play a role in fixing the screws, and the position of the bottom plate 3 is fixed through the screws.

The outer wall of bottom plate 3 is provided with first leading edge locating pin 7, second leading edge locating pin 8 and runner face locating pin 9, as shown in fig. 6 and 7, first leading edge locating pin 7 and second leading edge locating pin 8 are in the position of first locating piece 5 and second locating piece 6, limit blade 2 one side of first locating piece 5 and second locating piece 6 position through first leading edge locating pin 7 and second leading edge locating pin 8, improve the fixed effect of blade 2, and runner face locating pin 9 can block in the one side of blade root 1, increase the fixed effect of blade root 1.

Hold-down mechanism includes two guiding axles 10, riser 4 is all passed to the one end of two guiding axles 10, the one end of two guiding axles 10 is all connected with elbow clamp mounting panel 16 through the screw, the other end of two guiding axles 10 all overlaps and is equipped with spring 18, the other end of two guiding axles 10 all is equipped with mounting panel 11 through the screw fixation, the guiding axle 10 of this structure can pass riser 4, spring 18's one end top is on the outer wall of riser 4 simultaneously, the spring 18 other end can push mounting panel 11 towards another direction top like this, fixed elbow presss from both sides 17 and can drive elbow clamp mounting panel 16 and remove simultaneously, it can promote guiding axle 10 and remove to make elbow clamp mounting panel 16, guiding axle 10 can drive mounting panel 11 and remove like this.

The one side that mounting panel 11 is close to riser 4 is provided with the rectangle arch of symmetry form, the protruding central part of mounting panel 11 rectangle has seted up the through-hole, the protruding through-hole inboard block of mounting panel 11 rectangle has pin 13, the outside of pin 13 is rotated the cover and is equipped with lever 12, and lever 12 is in between two rectangle archs of mounting panel 11, the effect of fixed pin 13 is played to the arch on the mounting panel 11 of this structure, fix the position of lever 12 through pin 13, lever 12 can move about like this, make first compact heap 14 and the second compact heap 15 that lever 12 connects can cushion the removal.

The central point that the elbow pressed from both sides mounting panel 16 is provided with fixed elbow and presss from both sides 17, and the outside that the elbow pressed from both sides mounting panel 16 fixed to riser 4 is passed to the one end of dead lever on the fixed elbow presss from both sides 17, and the fixed elbow of this structure presss from both sides 17 can be installed on riser 4 through the dead lever, and the active structure of fixed elbow clamp 17 can promote elbow clamp mounting panel 16 like this and remove, makes elbow clamp mounting panel 16 can drive guiding axle 10 and remove, makes two guiding axles 10 receive thrust the same.

The material clamping mechanism comprises a first positioning block 5, a second positioning block 6, a first pressing block 14 and a second pressing block 15, wherein the first positioning block 5 and the first pressing block 14 are located on the same horizontal line, the second positioning block 6 and the second pressing block 15 are located on the same horizontal line, the first positioning block 5 and the second positioning block 6 are fixed on the outer wall of the vertical plate 4 through screws, one surfaces, close to the blade 2, of the first positioning block 5 and the second positioning block 6 are respectively provided with a positioning surface copying with the profile of the blade 2, one surfaces, close to the blade 2, of the first pressing block 14 and the second pressing block 15 are respectively provided with a pressing surface copying with the profile of the blade 2, the first positioning block 5 and the second positioning block 6 of the structure can be mutually matched with the first pressing block 14 and the second pressing block 15 to clamp the outer portion of the blade 2, and the effect of fixing the blade 2 is improved.

The first compressing block 14 and the second compressing block 15 are close to one side of the mounting plate 11 and are provided with grooves matched with the external shapes of the two ends of the lever 12, the two ends of the lever 12 are respectively connected with the first compressing block 14 and the second compressing block 15 through screws, the grooves in the first compressing block 14 and the second compressing block 15 of the structure play a role in containing the lever 12, and the connecting effect between the lever 12 and the first compressing block 14 and the second compressing block 15 is improved.

The working principle is as follows: firstly, the blade 2 is arranged at the position among the first positioning block 5, the second positioning block 6, the first pressing block 14 and the second pressing block 15, then the elbow clamp mounting plate 16 is driven to move through the fixed elbow clamp 17, the elbow clamp mounting plate 16 can drive the guide shaft 10 to move towards the fixed elbow clamp 17, the guide shaft 10 can drive the mounting plate 11 to move towards the blade 2, thus the first pressing block 14 and the second pressing block 15 at the two ends of the lever 12 can be pressed at the outer part of the blade 2, the outer part of the blade 2 is clamped through the mutual matching between the first pressing block 14 and the second pressing block 15 as well as the first positioning block 5 and the second positioning block 6, meanwhile, the first front edge positioning pin 7, the second front edge positioning pin 8 and the flow passage surface positioning pin 9 are respectively arranged at the positions of the blade 2 and the blade root 1, the edge positions of the blade 2 and the blade root 1 are limited, and the condition that the blade 2 and the blade root 1 shake occurs is avoided, improve the fixed effect of blade 2 and blade root 1, lever 12 can move about moreover, can adjust the position of first compact heap 14 and second compact heap 15 like this, avoids first compact heap 14 and second compact heap 15 to appear the too big condition of extrusion force to blade 2.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a measure three-coordinate anchor clamps of blade root which characterized in that: the device comprises a three-coordinate measuring machine working table (19), wherein a plurality of groups of clamp mechanisms are arranged above the three-coordinate measuring machine working table (19), and each clamp comprises a main body mounting frame, a material clamping mechanism and a pressing mechanism; the outer wall of the main body mounting frame is provided with a pressing mechanism, the inner side of the pressing mechanism is provided with a material clamping mechanism, a blade (2) is clamped inside the material clamping mechanism, and one end of the blade (2) is fixed with a blade root (1).

2. A three-coordinate fixture for measuring the root of a blade according to claim 1, wherein: the main body mounting frame comprises a bottom plate (3), a vertical plate (4) is fixed on one surface of the bottom plate (3) through screws, positioning holes (20) are respectively formed in diagonal positions of the outer wall of the bottom plate (3), and the positioning holes (20) are mounted on a working table surface (19) of the three-coordinate measuring machine through screws.

3. A three-coordinate fixture for measuring the root of a blade according to claim 2, wherein: the outer wall of the bottom plate (3) is provided with a first front edge positioning pin (7), a second front edge positioning pin (8) and a flow passage surface positioning pin (9).

4. A three-coordinate fixture for measuring the root of a blade according to claim 1, wherein: hold-down mechanism includes two guiding axle (10), two riser (4) are all passed to the one end of guiding axle (10), two the one end of guiding axle (10) is all connected with elbow clamp mounting panel (16) through the screw, two the other end of guiding axle (10) all overlaps and is equipped with spring (18), two the other end of guiding axle (10) all is fixed with mounting panel (11) through the screw.

5. A three coordinate fixture for measuring the root of a blade according to claim 4 wherein: the one side that mounting panel (11) is close to riser (4) is provided with the rectangle arch of symmetry form, the through-hole has been seted up at the protruding central point of mounting panel (11) rectangle, and the inboard block of the protruding through-hole of mounting panel (11) rectangle has pin (13), the outside rotation cover of pin (13) is equipped with lever (12), and lever (12) are in between two rectangle archs of mounting panel (11).

6. A three coordinate fixture for measuring the root of a blade according to claim 4 wherein: the fixed elbow clamp (17) is arranged at the center of the elbow clamp mounting plate (16), and one end of a fixed rod on the fixed elbow clamp (17) penetrates through the elbow clamp mounting plate (16) to be fixed to the outer portion of the vertical plate (4).

7. A three-coordinate fixture for measuring the root of a blade according to claim 1, wherein: the material clamping mechanism comprises a first positioning block (5), a second positioning block (6), a first pressing block (14) and a second pressing block (15), wherein the first positioning block (5) and the first pressing block (14) are located on the same horizontal line, the second positioning block (6) and the second pressing block (15) are located on the same horizontal line, the first positioning block (5) and the second positioning block (6) are fixed on the outer wall of the vertical plate (4) through screws, one surfaces, close to the blade (2), of the first positioning block (5) and the second positioning block (6) are respectively provided with a positioning surface which is in profile profiling with the blade (2), and one surfaces, close to the blade (2), of the first pressing block (14) and the second pressing block (15) are respectively provided with a pressing surface which is in profile profiling with the blade.

8. A three-coordinate fixture for measuring the root of a blade according to claim 7, wherein: the side, close to the mounting plate (11), of the first pressing block (14) and the second pressing block (15) is provided with grooves matched with the external shapes of the two ends of the lever (12), and the two ends of the lever (12) are connected with the first pressing block (14) and the second pressing block (15) through screws respectively.