CN214814990U

CN214814990U - Positioning and supporting clamp for machining small holes of turbine flow guide disc

Info

Publication number: CN214814990U
Application number: CN202023048776.0U
Authority: CN
Inventors: 黄强; 林毅; 李旭涛
Original assignee: Xi'an Xae Flying Aviation Manufacturing Technology Co ltd
Current assignee: Xi'an Xae Flying Aviation Manufacturing Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-11-23
Anticipated expiration: 2030-12-17

Abstract

The utility model relates to a location support fixture for processing of turbine flow guide disc aperture. The technical scheme of the utility model including the anchor clamps base, the anchor clamps base is the rhombus, and the base both ends are provided with "U" type groove respectively, and anchor clamps base center sets up cylindrical sleeve, and the sleeve upper end sets up the ring channel along the circumferencial direction, and anchor clamps base upper end central point puts the design through-hole, and anchor clamps base upper end is along circumference evenly distributed screw bottom hole one, evenly sets up the connecting hole along the center of base in the ring channel, and cylindrical sleeve evenly sets up screw bottom hole two along radial. The utility model discloses a set up adjustable floating ring, through rotating hexagon socket head cap screw, make the position of floating ring adjust from top to bottom to the location requirement of adaptation different turbine guiding plate parts improves part self rigidity, weakens the part and compresses tightly the deformation that produces under the state that compresses tightly, improves the cooperation precision of floating ring and part, through setting up the clamp plate, has reduced the whole outer structure's of anchor clamps size, has guaranteed the tight reliability of part clamp.

Description

Positioning and supporting clamp for machining small holes of turbine flow guide disc

Technical Field

The utility model relates to an aeroengine parts machining technical field, concretely relates to location support fixture for turbine flow guide disc aperture processing.

Background

The turbine guide plate part is an important component of an aeroengine, and has the structural characteristics of small size, complex profile, thin wall and complicated part positioning and clamping. The positioning method of the part related to the hole machining of the turbine guide disc is multiple, but the part is complex in molded surface, poor in rigidity of a positioning surface of the part, and difficult to effectively remove the positioning surface and the clamp, the part cannot be positioned by a conventional positioning clamp, the part is suspended during machining due to the lack of a stable and reliable positioning clamping surface, the stress is unbalanced, the thin-wall part of the part can be warped and deformed after machining, the position accuracy of a hole of the part after machining is poor, the positioning reliability of the conventional clamp is poor, the clamp cannot effectively clamp the part, and the deformation of the part after machining cannot be repaired. Therefore, in order to improve the reliability of the small hole machining of the turbine guide disc part and eliminate the unstable factors during part positioning, a new auxiliary support clamp is designed to determine a reasonable positioning surface and a reasonable supporting surface, so that the positioning state is improved, the positioning precision of the part is improved, and the part hole machining yield is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be used for turbine flow deflector part spot facing work auxiliary stay anchor clamps, it has set up the floating ring at part circular arc location portion, the effectual whole rigidity that improves the part, through setting up "C" type clamp plate, the tight reliability of part clamp has both been guaranteed, anchor clamps external structure size has been reduced again, avoid the drill bit to add man-hour and anchor clamps interference with drilling, "C" type clamp plate is more ordinary flat clamp plate and is saved space, during the processing aperture, but the cutter at utmost is close by the processing work piece, the handle of a knife is nearer apart from the part, the cutter rigidity that can design is better.

For solving the problems existing in the prior art, the technical scheme of the utility model is that: the utility model provides a location support fixture for turbine flow guide disc aperture processing which characterized in that: the clamp comprises a rhombic clamp base and a T-shaped base, wherein the T-shaped base is integrally formed by a cylindrical sleeve arranged in the center of the base; the center of the bottom of the T-shaped seat is hollow;

the fixture comprises a fixture base, a sleeve, a through hole, a gland, screw counter bores and a gland, wherein U-shaped grooves are respectively formed in two ends of the fixture base, an annular groove is formed in the upper end of the sleeve, connecting through holes are uniformly formed in the sleeve below the annular groove along the center of the base, a through hole is formed in the center of the top of the sleeve, the top of the sleeve is provided with the gland, a hole is formed in the center of the gland, the sleeve is connected with the gland through the hexagon socket head cap screws, the hexagon socket head cap screws penetrate through the bottoms of the through holes in the center of the sleeve to be connected with a support plate, the sleeve is uniformly provided with the screw counter bores I along the circumferential direction, the cylindrical sleeve is uniformly provided with the screw counter bores II along the radial direction, and the gland is provided with the through holes along the circumferential direction and is fixed with the screw counter bores I of the sleeve through the hexagon socket head cap screws I;

a floating ring is arranged in the annular groove, a supporting pin is arranged at the lower end of the floating ring and penetrates through the connecting through hole, the lower end of the supporting pin is connected with the supporting plate,

the lower end of each threaded counter bore II on the outer wall of the cylindrical sleeve is provided with a V-shaped groove, a C-shaped pressing plate is clamped between the V-shaped groove and the top of the sleeve, a hole is formed in the center of the pressing plate, and the pressing plate is connected with the threaded counter bore II of the sleeve through a hexagon socket head cap screw II.

Further, the first threaded counter bore and the connecting hole are arranged on concentric circumferences.

Furthermore, the first threaded counter bore is provided with 3, the connecting hole is provided with 3, and the second threaded counter bore is provided with 5.

Furthermore, an opening gasket is arranged between the first inner hexagonal socket head cap screw and the gland.

Furthermore, a spherical washer and a hexagonal thin nut are arranged at the lower end of the inner hexagonal screw.

Compared with the prior art, the utility model has the advantages as follows:

1) the utility model discloses a set up adjustable floating ring, through rotating hexagon socket head cap screw, make floating ring's position adjust from top to bottom to the location requirement of adaptation different turbine guiding plate parts. After the floating ring is adjusted, the lower end face of the turbine guide disc part is attached to the upper end face of the floating ring, so that the rigidity of the part is improved, the compression deformation of the part in a compression state due to insufficient rigidity is eliminated or weakened, and the matching precision of the floating ring and the part is improved.

2) The utility model discloses a set up C "type clamp plate, reduced the size of the whole exterior structure of anchor clamps, made the clamp plate compress tightly the part downwards, guaranteed the tight reliability of part clamp, avoid the drill bit to add man-hour and interfere with anchor clamps drilling, the space that anchor clamps were practiced thrift establishes the basis for cutter structure optimization.

3) The utility model discloses a set up the gland, the rigidity of part pore wall has been improved in the inboard laminating of pore wall of gland excircle and turbine flow guide plate part, and apron excircle department is provided with the clearance groove, avoids the drill bit to add man-hour and interferes with the gland, does benefit to the spot facing work chip removal.

Drawings

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

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of a base;

FIG. 4 is a schematic structural view of the gland;

FIG. 5 is a schematic view of a "C" type platen structure;

FIG. 6 is a schematic view of a turbine diaphragm detail;

description of reference numerals: 1-base, 2-gland, 3- 'C' -shaped pressure plate, 4-floating ring, 5-support plate, 6-support pin, 7-opening gasket, 8-inner hexagonal screw, 9-hexagonal thin nut, 10-inner hexagonal socket head screw II, 11-inner hexagonal socket head screw I, 12-spherical gasket, 13-turbine deflector part, 14-cylindrical sleeve, 15-annular groove, 16-through hole, 17-thread counter bore I, 18-thread counter bore II, 19-connecting through hole and 20-radial small hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A positioning and supporting clamp for machining a small hole of a turbine guide disc comprises a rhombic clamp base 1 and a T-shaped base which is integrally arranged at the center of the base and consists of a cylindrical sleeve 14, wherein the T-shaped base is provided with a groove and a groove; the center of the bottom of the T-shaped seat is hollow; two ends of the clamp base are respectively provided with a U-shaped groove and are fixed with a workbench of a machine tool through the U-shaped grooves.

An annular groove 15 is formed in the upper end of the sleeve 14 in the circumferential direction, a gland 2 is arranged at the top of the sleeve 4, as shown in fig. 4, through holes 16 are respectively formed in the centers of the sleeve 4 and the gland 2, an inner hexagonal screw 8 penetrates through the through holes, the other end of the inner hexagonal screw 8 is connected with the support plate 5, and a spherical washer 12 and a thin hexagonal nut 9 are arranged at the lower end of the inner hexagonal screw 8.

The sleeve 14 and the gland 2 are uniformly provided with 3 threaded counter bores I17 along the circumferential direction, the inner hexagonal socket head cap screws I11 are arranged in the threaded counter bores I, and the split washers 7 penetrate through the middles of the screws I11 and the gland 2.

A floating ring 4 is arranged in the annular groove 15, a supporting pin 6 is arranged at the lower end of the floating ring 4, the supporting pin 6 is arranged in a connecting hole 19 in a penetrating way, the lower end of the supporting pin 6 is connected with a supporting plate 5, and a part 13 is arranged on the floating ring 4; 3 connecting holes 19 are uniformly formed in the annular groove 15 along the center of the

base

1, and 5 threaded counter bores II 18 are uniformly formed in the cylindrical sleeve 14 along the radial direction.

The lower end of each threaded counter bore II 18 in the outer wall of the cylindrical sleeve 14 is provided with a V-shaped groove, a C-shaped pressing plate 3 is clamped between the V-shaped groove and the top of the sleeve 14, a hole is formed in the center of the pressing plate 3, and the pressing plate is connected with the threaded counter bore II 18 of the sleeve 14 through a hexagon socket head cap screw II 10, as shown in fig. 3.

The first threaded counter bore 17 and the connecting bore 19 are arranged on concentric circumferences.

The number of the split washers 7 is 3, and the number of the first screws 11 is 3. The number of the supporting pins 6 is 3, the number of the pressing plates 3 is 5, the number of the inner hexagonal socket head cap screws 10 is 5, and the number of the hexagonal thin nuts 9 is 2.

The socket head cap screw 8 is inserted into the central hole of the support plate 5, and the end of the socket head cap screw 8 is connected with the spherical washer 12 and the thin hexagon nut 9.

The working method of the positioning and supporting clamp for machining the small hole of the turbine guide disc comprises the following steps:

the first step is as follows: placing the clamp base 1 on a workbench of a numerical control machining center, and fixing the clamp base 1 on the workbench by penetrating screws through open U-shaped grooves formed in two ends of the clamp base;

the second step is that: when the turbine guide disc part is installed, the part 13 is placed on the floating ring 4, the hexagon socket head cap screws 8 are rotated, the supporting plate 5 is pulled to move upwards, the supporting plate 5 drives the 3 supporting pins 6 to move upwards, the floating ring 4 is jacked up by the supporting pins 6, and the upper end positioning surface of the floating ring 4 is attached to the lower end positioning surface of the turbine guide disc part 13.

The third step: and (3) sequentially installing the pressing plate, pressing the upper end positioning surface of the pressing plate 3 on the end surface of the part 13 during installation, fitting the lower end of the pressing plate 3 with the V-shaped groove of the cylindrical sleeve 14, screwing the second hexagon socket head cap screw 10, and pressing the turbine flow guiding disc part 13 by the pressing plate 3 under stress.

The fourth step: installing a gland 2, attaching a positioning surface below the gland 2 to the upper end surface of a turbine flow guide disc 13, installing 3

opening gaskets

7 and 3 hexagon socket head cap screws 11 respectively, and screwing the hexagon socket head cap screws 11 to fix the gland 2.

The fifth step: and (4) installing a cutter, and machining a radial small hole 20 of the turbine guide disc part.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a location support fixture for turbine flow guide disc aperture processing which characterized in that: comprises a T-shaped seat consisting of a rhombic clamp base (1) and a cylindrical sleeve (14) integrally arranged at the center of the base; the center of the bottom of the T-shaped seat is hollow;

the clamp is characterized in that U-shaped grooves are respectively arranged at two ends of a clamp base (1), an annular groove (15) is arranged at the upper end of a sleeve (14), connecting through holes (19) are uniformly distributed on the sleeve (14) below the annular groove (15) along the center of the base (1), a through hole (16) is arranged at the center of the top of the sleeve (14), a gland (2) is arranged at the top of the sleeve (14), a hole is arranged at the center of the gland (2), the sleeve (14) is connected with the gland (2) through an inner hexagon screw (8), the inner hexagon screw (8) penetrates through the bottom of the through hole (16) at the center of the sleeve (14) and is connected with a support plate (5), the sleeve (14) is uniformly distributed with a first screw thread counter bore (17) along the circumferential direction, the cylindrical sleeve (14) is uniformly distributed with a second screw thread counter bore (18) along the radial direction, the gland (2) is provided with through holes along the circumferential direction, the inner hexagonal socket head cap screw I (11) is fixed with the thread counter bore I (17) of the sleeve (14);

a floating ring (4) is arranged in the annular groove (15), a supporting pin (6) is arranged at the lower end of the floating ring (4), the supporting pin (6) is arranged in the connecting through hole (19) in a penetrating way, the lower end of the supporting pin (6) is connected with the supporting plate (5),

the lower end of each threaded counter bore II (18) on the outer wall of the cylindrical sleeve (14) is provided with a V-shaped groove, a C-shaped pressing plate (3) is clamped between the V-shaped groove and the top of the sleeve (14), a hole is formed in the center of the pressing plate (3), and the pressing plate is connected with the threaded counter bore II (18) of the sleeve (14) through a hexagon socket head cap screw II (10).

2. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 1, wherein: the first threaded counter bore (17) and the connecting through hole (19) are arranged on concentric circumferences.

3. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 1 or 2, wherein: the number of the first threaded counter bores (17) is 3, the number of the connecting through holes (19) is 3, and the number of the second threaded counter bores (18) is 5.

4. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 3, wherein: an opening gasket (7) is arranged between the first inner hexagonal socket head cap screw (11) and the gland (2).

5. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 4, wherein: the lower end of the inner hexagon screw (8) is provided with a spherical washer (12) and a hexagon thin nut (9).