CN217453359U

CN217453359U - Integrated machining clamp for low-pressure turbine working blade shroud

Info

Publication number: CN217453359U
Application number: CN202220328307.4U
Authority: CN
Inventors: 杨恒; 张爱民; 徐培江; 孙俊伟
Original assignee: Chengdu Hehong Technology Co ltd
Current assignee: Chengdu Hehong Technology Co ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-09-20
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to a turbine blade adds clamping apparatus's technical field particularly, relates to an integrated processing anchor clamps of low pressure turbine working blade shroud, include the base and set up in the first mounting and the second mounting of base. The first fixing piece is fixedly arranged on the base. The second fixing piece is arranged on the base and can move relative to the first fixing piece. The first fixing piece and the second fixing piece are matched and arranged, so that the first fixing piece and the second fixing piece can clamp the turbine blade. The base is provided with a fixing hole in cooperation with the machine tool so that the base can be fixed to an object stage of the machine tool. The integrated machining clamp for the blade shroud of the low-pressure turbine working blade can machine a plurality of surfaces of the turbine blade under the rotation of the objective table after clamping the turbine blade, and frequent switching of the clamp is avoided. Meanwhile, the types of the clamps are reduced, and the production cost is greatly reduced.

Description

Integrated machining clamp for blade shroud of low-pressure turbine working blade

Technical Field

The utility model relates to a turbine blade adds clamping apparatus's technical field particularly, relates to an integrated processing anchor clamps of low pressure turbine working blade shroud.

Background

Turbine blades are important parts of aircraft engines. A plurality of multi-connected turbine blades are spliced to form a circle, and then the complete turbine blades are formed. The contact surface when two adjacent turbine blades are assembled needs to be polished. Because two contact surfaces on the same side of the turbine blade are not in the same plane, the clamp needs to be switched continuously when the contact surfaces of the turbine blade are ground, and then different contact surfaces are respectively corresponding to the grinding wheel. The processing mode needs a plurality of clamps, and meanwhile, the processing mode can be finished only by carrying out a plurality of ending replacement. This leads to an increase in production costs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integrated adds clamping apparatus of low pressure turbine working blade tip shroud, it can press from both sides tightly and ally oneself with the turbine blade more and be fixed in the lathe, makes things convenient for the lathe to process turbine blade.

The embodiment of the utility model discloses a realize through following technical scheme:

a low-pressure turbine working blade shroud integrated machining clamp comprises a base, a first fixing piece and a second fixing piece, wherein the first fixing piece and the second fixing piece are arranged on the base; the first fixing piece is fixedly arranged on the base; the second fixing piece is arranged on the base and can move relative to the first fixing piece; the first fixing piece and the second fixing piece are arranged in a matched mode, so that the first fixing piece and the second fixing piece can clamp the turbine blade; the base is provided with a fixing hole in cooperation with the machine tool so that the base can be fixed to an object stage of the machine tool.

Further, the second fixing piece is hinged to the base, so that the second fixing piece can swing relative to the first fixing piece; the top of the first fixing piece is provided with a connecting rod; the connecting rod extends towards one side of the second fixing piece; and one end of the second fixing piece, which is far away from the hinge point, is connected with one end of the connecting rod, which is far away from the first fixing piece, through a screw.

Further, the second fixing piece is provided with a jacking piece; two ends of the tightening piece are respectively matched with the inner edge plate and the outer edge plate of the turbine blade and are convexly provided with tightening parts; the second fixing piece is provided with an adjusting screw; one end of the adjusting screw is provided with a limit groove along the circumferential direction; the top fastening piece is provided with a connecting groove; and limiting bulges are arranged on the two sides of the notch of the connecting groove in a manner of being matched with the limiting groove, so that when one end of the adjusting screw is accommodated in the connecting groove, the limiting bulges are accommodated in the limiting groove.

Further, the jacking piece is provided with a guide post; the second fixing piece is matched with the guide post to be provided with a guide hole.

Further, the first fixing piece is provided with a clamping portion in a protruding mode in cooperation with the inner edge plate and the outer edge plate of the turbine blade.

Furthermore, the clamping part positioned at the lower part of the first fixing part is also convexly provided with a bearing column for placing the outer edge plate.

Furthermore, the first fixing piece is also provided with a positioning rod; the locating rod extends towards one side of the second fixing piece and is matched with two adjacent blades of the turbine blade, so that when the turbine blade is clamped between the first fixing piece and the second fixing piece, the locating rod is inserted between the two adjacent blades.

Further, the base is provided with two locating pins in cooperation with the machine tool.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model discloses an integrated adds clamping apparatus when low pressure turbine working blade tip shroud uses, will ally oneself with the turbine blade more and place between first mounting and second mounting, and then will ally oneself with turbine blade clamp more and more tightly. After the base is fixed on the objective table of the machine tool, the objective table automatically rotates and adjusts the angles of the multi-connected turbine blades according to a machining program, so that different machining positions of the turbine blades respectively correspond to the grinding wheels of the machine tool, and a plurality of surfaces of the turbine blades are conveniently polished.

The integrated machining clamp for the blade shroud of the low-pressure turbine working blade can machine a plurality of surfaces of the turbine blade under the rotation of the objective table after clamping the turbine blade, and frequent switching of the clamp is avoided. Meanwhile, the types of the clamps are reduced, and the production cost is greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the integrated machining fixture for the blade shroud of the low-pressure turbine working blade provided by the present invention;

FIG. 2 is an enlarged view taken at a point a in FIG. 1;

FIG. 3 is a schematic view of a turbine blade configuration;

FIG. 4 is a schematic view of a turbine blade and fixture combination.

Icon: 1-base, 11-fixing hole, 12-positioning pin, 2-second fixing piece, 21-top fixing piece, 22-top fastening part, 23-adjusting screw, 24-limiting groove, 25-connecting groove, 26-limiting protrusion, 27-guide column, 3-first fixing piece, 31-clamping part, 32-bearing column, 33-positioning rod, 34-connecting rod, 4-turbine blade, 41-inner edge plate, 42-outer edge plate, and 43-notch.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of this application is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1-4, the utility model provides an integrated adds clamping apparatus of low pressure turbine working blade shroud, including base 1 and set up in first mounting 3 and the second mounting 2 of base 1. The first fixing member 3 is fixedly disposed on the base 1. The second fixing member 2 is provided on the base 1 and is movable relative to the first fixing member 3. Specifically, the second fixing member 2 is hinged to the base 1, so that the second fixing member 2 can swing relative to the first fixing member 3. The top of the first fixing member 3 is provided with a connecting rod 34. The connecting rod 34 extends toward the second fixing member 2 side. The end of the second fixing member 2 away from the hinge point is connected to the end of the connecting rod 34 away from the first fixing member 3 by a screw. The first fixing member 3 is perpendicular to the base 1. The base 1 is provided with fixing holes 11 in cooperation with the machine tool so that the base 1 can be fixed to the stage of the machine tool. The object stage of the machine tool can be rotated, and the position and angle of the base 1 can be adjusted. The base 1 is provided with two positioning pins 12 in cooperation with a machine tool. The positioning pin 12 can be used for conveniently positioning the object stage.

The utility model discloses an integrated adds clamping apparatus when low pressure turbine working blade tip shroud uses, will ally oneself with turbine blade 4 more and place in first mounting 3 and rotatory second mounting 2 for second mounting 2 swings to first mounting 3, and then presss from both sides turbine blade 4 tightly between first mounting 3 and second mounting 2. Meanwhile, the top end of the second fixing member 2 is fixed to the connecting rod 34 by a screw, so that the first fixing member 3 and the second fixing member 2 are connected into a whole, and the separation of the two members in use is avoided. After the base 1 is fixed on the object stage of the machine tool, the object stage automatically rotates and adjusts the angle of the multi-connected turbine blade 4 according to a machining program, so that different machining positions of the turbine blade 4 respectively correspond to the grinding wheel of the machine tool, and a plurality of surfaces of the turbine blade 4 are conveniently polished. In practice, the turbine blade 4 comprises an inner edge plate 41 and an outer edge plate 42. Both ends of the inner edge plate 41 and the outer edge plate 42 need to be ground. At the same time, the outer edge plate 42 also needs to be ground to form the gap 43. In the prior art, each polishing position needs to be provided with a clamp independently and the corresponding clamp is switched to polish the polishing position. After the low-pressure turbine working blade shroud integrated machining clamp is adopted to clamp the turbine blade 4, a plurality of surfaces of the turbine blade 4 can be machined under the rotation of the objective table, and frequent switching of the clamp is avoided. Meanwhile, the types of the clamps are reduced, and the production cost is greatly reduced.

In addition, the second fixing part 2 is hinged, so that the second fixing part 2 can be conveniently matched with the first fixing part 3, and the turbine blade 4 can be conveniently clamped or taken out.

In this embodiment, the second fixing member 2 is provided with an urging member 21. The tightening member 21 is formed in an elongated shape, and both ends thereof are provided with tightening portions 22 projecting to engage with the inner edge plate 41 and the outer edge plate 42 of the turbine blade 4, respectively. The second fixture 2 is provided with an adjusting screw 23. One end of the adjusting screw 23 is provided with a stopper groove 24 along its circumferential direction. The top member 21 is provided with a coupling slot 25. The two sides of the notch of the connecting groove 25 are provided with limiting protrusions 26 in cooperation with the limiting groove 24, so that when one end of the adjusting screw 23 is accommodated in the connecting groove 25, the limiting protrusions 26 are accommodated in the limiting groove 24.

In use, the abutting portion 22 abuts the side surfaces of the inner edge plate 41 and the outer edge plate 42. The tight degree of top of the piece 21 can be adjusted by rotating the adjusting screw 23, and the turbine blade 4 is clamped conveniently. The gap between the first fixing piece 3 and the second fixing piece 2 is fixed by the setting of the connecting rod 34. The fine adjustment of the clamping degree can be carried out through the matching of the adjusting screw 23 and the jacking piece 21, and the operation is convenient.

In this embodiment, the jacking members 21 are provided with guide posts 27. The second fixing element 2 is provided with guide holes in cooperation with the guide posts 27. The sliding of the top member 21 relative to the second fixing member 2 is ensured to be more stable by the cooperation of the guide posts 27 and the top member 21.

In the present embodiment, the first fixing member 3 is provided with the clamp portion 31 projecting from the inner edge plate 41 and the outer edge plate 42 of each of the turbine blades 4. In actual machining of the turbine blade 4, both side surfaces of the inner edge plate 41 and the outer edge plate 42 need to be ground first. The inner flange 41 and the outer flange 42 are clamped by the engagement of the clamping portion 31 and the tightening portion 22, and the turbine blade 4 is clamped to the first fixing member 3 and the second fixing member 2.

In this embodiment, the clamping portion 31 located at the lower portion of the first fixing member 3 is further provided with a support column 32 for placing the outer edge plate 42. In the process of clamping the turbine blade 4, the turbine blade 4 is first placed on the first fixing member 3, so that the outer edge plate 42 of the turbine blade 4 is placed on the bearing column 32. This allows the turbine blade 4 to be supported by the first mount 3 by the load post 32. Subsequently, the second fixing part 2 is swinging and clamping the turbine blade 4.

In this embodiment, the first fixing member 3 is further provided with a positioning rod 33. The positioning rod 33 extends toward the second anchor 2 and is provided to be fitted to two adjacent blades of the turbine blade 4, so that the positioning rod 33 is inserted between the two adjacent blades when the turbine blade 4 is clamped between the first anchor 3 and the second anchor 2. This makes turbine blade 4 when pressing from both sides tightly between first mounting 3 and second mounting 2, locating lever 33 is spacing about turbine blade 4, and then avoids turbine blade 4 to rock to both sides.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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

1. The utility model provides an integrated adds clamping apparatus of low pressure turbine working blade shroud which characterized in that: comprises a base (1), a first fixing piece (3) and a second fixing piece (2) which are arranged on the base (1); the first fixing piece (3) is fixedly arranged on the base (1); the second fixing piece (2) is arranged on the base (1) and can move relative to the first fixing piece (3); the first fixing piece (3) and the second fixing piece (2) are arranged in a matched mode, so that the first fixing piece (3) and the second fixing piece (2) can clamp the turbine blade (4); the base (1) is provided with a fixing hole (11) in cooperation with a machine tool so that the base (1) can be fixed on an object stage of the machine tool.

2. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 1, wherein: the second fixing piece (2) is hinged to the base (1) so that the second fixing piece (2) can swing relative to the first fixing piece (3); the top of the first fixing piece (3) is provided with a connecting rod (34); the connecting rod (34) extends towards one side of the second fixing piece (2); one end, far away from the hinge point, of the second fixing piece (2) is connected to one end, far away from the first fixing piece (3), of the connecting rod (34) through a screw.

3. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 2, wherein: the second fixing piece (2) is provided with a jacking piece (21); two ends of the jacking piece (21) are respectively matched with the inner edge plate (41) and the outer edge plate (42) of the turbine blade (4) and are convexly provided with jacking parts (22); the second fixing piece (2) is provided with an adjusting screw (23); one end of the adjusting screw (23) is provided with a limit groove (24) along the circumferential direction; the jacking piece (21) is provided with a connecting groove (25); two sides of the notch of the connecting groove (25) are matched with the limiting groove (24) to be provided with limiting protrusions (26), so that when one end of the adjusting screw (23) is accommodated in the connecting groove (25), the limiting protrusions (26) are accommodated in the limiting groove (24).

4. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 3, wherein: the jacking piece (21) is provided with a guide column (27); the second fixing piece (2) is provided with a guide hole matched with the guide column (27).

5. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 1, wherein: the first fixing piece (3) is provided with a clamping part (31) in a protruding mode, wherein the clamping part is matched with an inner edge plate (41) and an outer edge plate (42) of the turbine blade (4).

6. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 5, wherein: the clamping part (31) positioned at the lower part of the first fixing part (3) is also convexly provided with a bearing column (32) for placing the outer edge plate (42).

7. The integrated machining fixture of a low-pressure turbine working blade shroud of claim 6, characterized in that: the first fixing piece (3) is also provided with a positioning rod (33); the locating rod (33) extends towards one side of the second fixing piece (2) and is matched with two adjacent blades of the turbine blade (4) in arrangement, so that when the turbine blade (4) is clamped between the first fixing piece (3) and the second fixing piece (2), the locating rod (33) is inserted between the two adjacent blades.

8. The integrated machining fixture for the blade shroud of the low-pressure turbine working blade as claimed in claim 1, wherein: the base (1) is matched with the machine tool and is provided with two positioning pins (12).