Clamping device for turbine blade

Abstract

The utility model discloses a clamping device for turbine blades, which comprises a blade clamp unit, the blade clamp unit comprises a clamp frame, a fixed clamp and a movable clamp are sequentially arranged on the clamp frame along the left-right direction, and the movable clamp is connected with a screw driving component; side clamping assemblies capable of moving leftwards and rightwards are arranged on the clamp frame in the front-back direction, each side clamping assembly comprises a side screw, a flange, a fastening nut, a screw sleeve head, a ball head upper end cover and a ball head base, the flanges are connected with the clamp frame and can move leftwards and rightwards along the clamp frame, the fastening nuts are installed at the ends of the flanges in a threaded mode, and the screw sleeve heads are connected with the clamp frame. The side screw rod is mounted in the flange, and the side screw rod penetrates through the flange and the fastening nut; the screw sleeve head is arranged at the end, located in the clamp frame, of the side screw in a sleeving mode, the screw sleeve head is provided with a spherical head, and the spherical head of the screw sleeve head is connected with a spherical head upper end cover and a spherical head base. The tool has good universality and can clamp turbine blades of different sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing and clamping of turbine blades, in particular to a clamping device for turbine blades. Background Art

[0002] During aviation flight, fuel impurities and incompletely burned soot particles tend to form carbon deposits in the film holes of turbine blades; flying dust will also be deposited for a long time, and a large amount of carbon deposits, sand, volcanic ash, clay and various metal oxides will form deposits that adhere to the inner wall of the film hole. Its main components are silicon oxide, silicate, calcium oxide, magnesium oxide and aluminum oxide. These accumulated environmental deposits will cause the efficiency of film hole cooling gas transmission to decrease, seriously reducing the service performance and service life of the engine. Removing film hole deposits and maintaining the surface integrity and cooling fluency of the film hole are the key to ensuring the normal service of aircraft engine blades, and are also an urgent need to ensure my country's aviation power, and have important engineering application value.

[0003] When polishing the air film hole deposits of turbine blades, a clamping device is required to fix the turbine blades. Turbine blades have various models, and the structures and sizes of turbine blades of different models are also different. Providing a special clamp that fully matches the size of each model of turbine blade can certainly improve the clamping efficiency, but it is necessary to make multiple clamping devices, resulting in a significant increase in costs. In order to reduce the manufacturing cost of the clamping device, the applicant designed a clamping device with good applicability that can clamp turbine blades of different sizes. Utility Model Content

[0004] The utility model aims to provide a clamping device for turbine blades, which can clamp turbine blades of different sizes and effectively reduce the manufacturing cost of the clamping device.

[0005] The utility model is achieved in this way:

[0006] 4. The repairing kit for automotive dents, according to claim 1, wherein the tool is a wood-planer with a teaming device, and the tool is adapted to engage in a plurality of rotations of the two wheels, wherein the rotation of the two wheels is performed along the direction of the wheel. The tool is adapted to engage in a plurality of rotations of the two wheels, wherein the two wheels have respective opposite ends.

[0007] Preferably, the clamp frame has a rectangular frame structure, and the clamp frame includes two mutually parallel first side plates, a second side plate and a fixed plate, the second side plate and the fixed plate are parallel to each other and perpendicular to the first side plate, and the second side plate and the fixed plate are respectively arranged at both ends of the first side plate.

[0008] Preferably, the screw drive assembly includes a main screw and a main screw cover, a sliding track is arranged on the first side plate along its length direction, a sliding groove matching the sliding track is arranged on the movable clamp, and the movable clamp is slidably connected to the sliding track through the sliding groove; a main screw is arranged on the fixed plate, a main screw cover is arranged at the end of the main screw, and the main screw cover is connected to the movable clamp.

[0009] Preferably, the two first side plates are provided with sliding guide holes along their length direction, and a side clamping assembly is installed in each of the two sliding guide holes. The flange includes a baffle portion and a sleeve portion, and the sleeve portion of the flange is arranged in the sliding guide hole. The flange can move along the sliding guide hole, and a fastening nut is threadedly installed at one end of the flange sleeve portion away from the baffle portion, and tightening the fastening nut can fix the column flange.

[0010] Preferably, it further comprises a frame unit, the frame unit comprises a clamping platform, the clamping platform is provided with a clamping opening, the clamp frame is provided with a clamp connecting piece, and the clamp connecting piece is connected to the clamping platform by bolts.

[0011] Preferably, a liquid collecting box is provided in the clamping port, and a recovery pipe is provided at the lower end of the liquid collecting box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The clamping device for turbine blades proposed by the utility model has simple components, is convenient to clamp, can be disassembled and reused, and has good versatility and can clamp turbine blades of different sizes.

[0014] 2. The utility model is provided with a liquid collecting box, and a recovery pipe is provided at the lower end of the liquid collecting box. The polishing liquid can be recovered through the liquid collecting box and the recovery pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a blade fixture unit provided by the utility model when a turbine blade is clamped therein;

[0016] Figure 2 It is a structural schematic diagram of the side clamping assembly of the blade clamp unit provided by the utility model;

[0017] Figure 3 This is a diagram of the clamping process of the turbine blade of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the turbine blade clamped by the utility model.

[0019] In the figure: 5, frame unit; 501, clamping platform; 502, recovery pipe;

[0020] 6. Blade clamp unit; 601. Fixed clamp; 602. First side plate; 603. Second side plate; 604. Active clamp; 605. Main screw cover; 606. Main screw; 607. Fixed plate; 608. Side clamp assembly; 608-1 Side screw; 608-2 Flange; 608-3 Fastening nut; 608-4 Screw sleeve; 608-5 Ball head upper cover; 608-6 Ball head base; 609. Clamp connector;

[0021] 8. Turbine blade; 801. Blade positioning end face; 802. Blade edge plate; 803. Blade inner cavity; 804. Air film hole; 805. Blade airfoil. DETAILED DESCRIPTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0024] like Figure 1 and Figure 2 As shown, a clamping device for turbine blades includes a frame unit 5 and a blade clamp unit 6. The frame unit 5 includes a clamping platform 501, a clamping port is provided on the clamping platform 501, a liquid collecting box is provided in the clamping port, and a recovery pipe 502 is provided at the lower end of the liquid collecting box. The blade clamp unit 6 includes a clamp frame, which is a rectangular frame structure, and a clamp connector 609 is provided on the clamp frame, and the clamp connector 609 is connected to the clamp platform 501 by bolts.

[0025] like Figure 1 As shown, the clamp frame includes two mutually parallel first side plates 602, a second side plate 603 and a fixed plate 607, the second side plate 603 and the fixed plate 607 are mutually parallel and perpendicular to the first side plate 602, and the second side plate 603 and the fixed plate 607 are respectively arranged at the two ends of the first side plate 602. A fixed clamp 601 and a movable clamp 604 are arranged in the clamp frame, a sliding track is arranged on the first side plate 602 along its length direction, a sliding groove adapted to the sliding track is arranged on the movable clamp 604, and the movable clamp 604 is slidably connected to the sliding track through the sliding groove. A main screw 606 is arranged on the fixed plate 607, and a main screw cover 605 is arranged at the end of the main screw 606, and the main screw cover 605 is connected to the movable clamp 604. Sliding guide holes are arranged on the two first side plates 602 along their length direction, and a side clamping assembly 608 is installed in each of the two sliding guide holes.

[0026] like Figure 1 and Figure 2As shown, the side clamping assembly 608 includes a side screw 608-1, a flange 608-2, a fastening nut 608-3, a screw sleeve 608-4, a ball head upper cover 608-5, and a ball head base 608-6. The flange 608-2 includes a baffle portion and a sleeve portion. The sleeve portion of the flange 608-2 is arranged in the sliding guide hole. The flange 608-2 can move along the sliding guide hole. The end of the sleeve portion of the flange 608-2 away from the baffle portion is threadedly installed with a fastening nut 608-3. Tightening the fastening nut 608-3 can fix the flange 608-2. The side screw 608-1 is installed in the flange 608-2 and passes through the flange 608-2 and the fastening nut 608-3. The screw sleeve 608-4 is sleeved on one end of the side screw 608-1 located inside the clamp frame. The screw sleeve 608-4 has a spherical head. The spherical head of the screw sleeve 608-4 is connected to the upper end cover 608-5 and the spherical head base 608-6 of the spherical head, together forming a spherical hinge structure. The side clamping assembly 608 is used to solve the problem that the blade positioning end face 801 of the turbine blade 8 is prone to tilt during the clamping process. The different force positions of the two parallel end faces will generate torque, causing the workpiece to have a tendency to rotate. The side clamping assembly 608 can prevent the turbine blade 8 from rotating and can clamp the turbine blade 8 more firmly.

[0027] like Figure 4 As shown, the turbine blade 8 to be clamped in the utility model has a blade positioning end face 801, a blade edge plate 802 and a blade wing surface 805, and a blade inner cavity 803 and a plurality of air film holes 804 connected to the blade inner cavity 803 are provided in the turbine blade 8.

[0028] like Figure 3 As shown, the clamping steps of the turbine blade 8 are as follows:

[0029] Step 1: Use bolts to install the blade fixture unit 6 on the clamping platform 501, and follow the Figure 3 a. Figure 3 b. Assemble;

[0030] Step 2: Loosen the two fastening nuts 608 - 3 to allow the flange 608 - 2 to slide freely, and drive the movable clamp 604 away from the fixed clamp 601 through the main screw 606 to leave enough space for the turbine blade 8;

[0031] Step 3: Place one side of the turbine blade 8 against the fixed clamp 601, and the main screw 606 pushes the movable clamp 604 blade to clamp the other side of the turbine blade 8 until the turbine blade 8 does not fall off;

[0032] Step 4: Adjust the position of the side clamping assembly 608 so that the distance between the side clamping assembly 608 on one first side plate 602 and the fixed clamp 601 is equal to the distance between the side clamping assembly 608 on the other first side plate 602 and the movable clamp 604. The side screw 608-1 pushes the ball head base 608-6 to approach the blade positioning end face 801 of the turbine blade 8. According to the inclination angle of the blade positioning end face 801, the direction of the ball head hinge is adjusted to require that the ball head base 608-6 is in contact with the blade positioning end face 801.

[0033] Step 5: Screw the side clamping assemblies 608 on both sides to the same degree, and further tighten the main screw 606, so that the clamping of the turbine blade 8 is completed.

[0034] After the turbine blade 8 is clamped, the polishing nozzle can be inserted into the blade cavity 803 of the turbine blade 8. The three-phase mixed polishing liquid of hydrocarbon liquid-bubble-abrasive sprayed from the nozzle is sprayed into the blade cavity 803 and flows out through the air film hole 804 of the turbine blade 8, thereby utilizing the gravity effect to achieve better polishing efficiency.

[0035] In summary, the clamping device for turbine blades proposed by the utility model has simple components, convenient clamping, can be disassembled and reused, and has good versatility, and can clamp turbine blades 8 of different sizes. In addition, the utility model is provided with a liquid collecting box, and a recovery pipe 502 is provided at the lower end of the liquid collecting box, through which the polishing liquid can be recovered.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping device for turbine blades, characterized in that: The blade clamp unit (6) comprises a clamp frame, and a fixed clamp (601) and a movable clamp (604) are sequentially arranged on the clamp frame along the left and right directions, and the movable clamp (604) is connected to a screw drive assembly, and the screw drive assembly drives the movable clamp (604) to move left and right; a side clamp assembly (608) movable left and right is arranged on the clamp frame along the front and back directions, and the side clamp assembly (608) comprises a side screw (608-1), a flange (608-2), a fastening nut (608-3), a screw sleeve (608-4), a ball head upper cover (608-5), and a ball head base (608-6), and the The flange (608-2) is connected to the clamp frame and can move left and right along the clamp frame. The end of the flange (608-2) is threadedly installed with a fastening nut (608-3). The side screw (608-1) is installed in the flange (608-2), and the side screw (608-1) passes through the flange (608-2) and the fastening nut (608-3); the screw sleeve (608-4) is sleeved on one end of the side screw (608-1) located inside the clamp frame, and the screw sleeve (608-4) has a spherical head. The spherical head of the screw sleeve (608-4) is connected to a spherical head upper end cover (608-5) and a spherical head base (608-6).

2. A clamping device for turbine blades according to claim 1, characterized in that: The clamp frame is a rectangular frame structure, comprising two mutually parallel first side plates (602), a second side plate (603) and a fixed plate (607), wherein the second side plate (603) and the fixed plate (607) are parallel to each other and perpendicular to the first side plate (602), and the second side plate (603) and the fixed plate (607) are respectively arranged at two ends of the first side plate (602).

3. A clamping device for turbine blades according to claim 2, characterized in that: The screw drive assembly comprises a main screw (606) and a main screw cover (605); a sliding track is arranged on the first side plate (602) along its length direction; a sliding groove matched with the sliding track is arranged on the movable clamp (604); the movable clamp (604) is slidably connected to the sliding track through the sliding groove; the main screw (606) is arranged on the fixed plate (607); a main screw cover (605) is arranged at the end of the main screw (606); and the main screw cover (605) is connected to the movable clamp (604).

4. A clamping device for turbine blades according to claim 2, characterized in that: The two first side plates (602) are provided with sliding guide holes along their length direction, and a side clamping assembly (608) is installed in each of the two sliding guide holes. The flange (608-2) includes a baffle portion and a sleeve portion. The sleeve portion of the flange (608-2) is arranged in the sliding guide hole. The flange (608-2) can move along the sliding guide hole. A fastening nut (608-3) is threadedly installed at one end of the sleeve portion of the flange (608-2) away from the baffle portion. Tightening the fastening nut (608-3) can fix the column flange (608-2).

5. A clamping device for turbine blades according to any one of claims 1 to 4, characterized in that: It also comprises a frame unit (5), the frame unit (5) comprising a clamping platform (501), the clamping platform (501) being provided with a clamping opening, the clamp frame being provided with a clamp connecting piece (609), the clamp connecting piece (609) being connected to the clamping platform (501) via bolts.

6. A clamping device for turbine blades according to claim 5, characterized in that: A liquid collecting box is arranged in the clamping port, and a recovery pipe (502) is arranged at the lower end of the liquid collecting box.

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