A device and method for processing thin-walled parts such as blade disks

Abstract

The present invention provides a device for processing thin-walled parts such as blade disks, comprising a workbench, a clamping body is provided on the workbench, a workpiece and a rotating body are provided on the clamping body, the rotating body can rotate relative to the clamping body, a clamp is provided on the rotating body, and the clamp is used to clamp the blades of the workpiece. The present invention discloses a device and method for processing thin-walled parts such as blade disks, which clamps the blades and supports the middle area of ​​the blades to improve the rigidity of the blades. Based on the high rigidity, the blade tip and the front section of the blade are processed. After completing the processing of a blade, the clamp is rotated to a certain angle relative to the blade to clamp the next blade to be processed, and the processing is continued until all blades are processed.

Description

Technical Field

[0001] The present invention relates to the field of processing thin-walled blade discs, and in particular to a device and method for processing thin-walled blade discs. Background Art

[0002] Due to the structural characteristics of thin-walled parts such as blades, their rigidity is relatively weak. When finishing the blades, the blades will vibrate, especially at the tip of the blade, where the vibration is very serious, which has a great impact on the processing accuracy. Summary of the invention

[0003] The present invention provides a device and method for processing thin-walled blade disks to solve the above problems.

[0004] A device for processing thin-walled blade disks comprises a workbench, a clamp body is arranged on the workbench, a workpiece and a rotating body are arranged on the clamp body, the rotating body can rotate relative to the clamp body, a clamp is arranged on the rotating body, and the clamp is used to clamp the blades of the workpiece.

[0005] Further, the rotating body includes a first rotating body and a second rotating body, the first rotating body is arranged above the workpiece, and the second rotating body is arranged below the workpiece;

[0006] The clamp includes a first clamp and a second clamp, wherein the first clamp is disposed on the first rotating body and is used to clamp the upper edge of the blade, and the second clamp is disposed on the second rotating body and is used to clamp the lower edge of the blade.

[0007] Furthermore, a connecting piece is provided on the rotating body, and the connecting piece includes a main body, a piston cylinder and a connecting rod. The piston cylinder is arranged in the main body, and the connecting rod is hinged to the main body. The cylinder body of the piston cylinder has a cylinder body recessed hole, and one end of the connecting rod extends into the cylinder body recessed hole. The clamp has a clamp recessed hole, and the other end of the connecting rod extends into the clamp recessed hole. The connecting piece is provided with a guide rail, and the clamp moves along the guide rail.

[0008] Further, the clamp body has a first locking mechanism, the first locking mechanism includes a first locking cylinder and a locking ball, the piston end of the first locking cylinder is provided with a first driving inclined surface, the rotating body has a first locking inclined surface, and the locking ball is closely attached to the first driving inclined surface and the first locking inclined surface;

[0009] When the piston end of the first locking cylinder moves axially along the clamp body, the first driving inclined surface drives the locking ball to move radially along the clamp body, and the locking ball drives the rotating body to move axially along the clamp body through the first locking inclined surface, so that the rotating body is axially pressed against the clamp body.

[0010] Further, the clamp body has a second locking mechanism, the second locking mechanism includes a second locking cylinder arranged radially along the clamp body, a second driving inclined surface is provided at the piston end of the second locking cylinder, and the rotating body is provided with a second locking inclined surface abutting against the second driving inclined surface;

[0011] When the piston end of the second locking cylinder moves radially, the second driving inclined surface drives the second locking inclined surface to move axially, so that the rotating body is axially pressed against the clamping body.

[0012] Furthermore, it also includes a driving member, the rotating body has a driving hole, one end of the driving member is connected to the main shaft, and the other end extends into the driving hole.

[0013] A method for processing a thin-walled blade disk comprises the following steps:

[0014] S1. Fix the workpiece to be processed by clamping the workpiece;

[0015] S2, a blade that clamps the workpiece through a fixture;

[0016] S3. Processing the blades of the workpiece.

[0017] Further, the clamp comprises a first clamp and a second clamp, the first clamp clamps the upper edge of the blade, and the second clamp clamps the lower edge of the blade.

[0018] Furthermore, the clamp is moved toward the workpiece along a guide rail, and the clamp includes a floating clamp, and the floating clamp is moved to both sides of the blade to clamp the blade.

[0019] Furthermore, it also includes

[0020] S4: The fixture releases the processed blade and moves along the guide rail in a direction away from the blade;

[0021] S5: rotating the workbench so that the driving hole on the rotating body faces the main shaft, driving the driving member through the main shaft so that the end of the driving member extends into the driving hole, and moving the rotating body through the main shaft so that the fixture provided on the rotating body rotates to the position of the blade to be processed;

[0022] S6: Repeat S2 to S5 until all blades are processed.

[0023] The present invention discloses a thin-walled blade processing device and method, which clamps the blade and supports the middle area of ​​the blade to improve the rigidity of the blade. Based on the high rigidity, the blade tip and the front section of the blade are processed. After completing the processing of a blade, the clamp is rotated at a certain angle relative to the blade to clamp the next blade to be processed, and the processing is continued until all blades are processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of a thin-walled blade disk processing device disclosed in an embodiment of the present invention;

[0026] Figure 2 It is a front view of a thin-walled blade disc processing device disclosed in an embodiment of the present invention;

[0027] Figure 3 It is a cross-sectional view of a device for processing thin-walled blade disks disclosed in an embodiment of the present invention;

[0028] Figure 4 for Figure 3 A magnified view of part A;

[0029] Figure 5 for Figure 3 A magnified view of part B;

[0030] Figure 6 for Figure 3 Enlarged view of part C;

[0031] Figure 7 It is a schematic diagram of the rotation of a rotating body of a blade disk thin-walled component processing device disclosed in an embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the connection between the main shaft, the driving member and the rotating body in an embodiment of the present invention.

[0033] In the figure:

[0034] 1. Workbench;

[0035] 2. Clamp body; 21. First locking mechanism; 211. First locking cylinder; 212. Locking ball; 213. First driving inclined plane; 22. Second locking mechanism; 221. Second locking cylinder; 222. Second driving inclined plane;

[0036] 3. Workpiece; 31. Blade;

[0037] 4. Rotating body; 41. First rotating body; 411. First locking inclined surface; 42. Second rotating body; 421. Second locking inclined surface; 43. Driving hole;

[0038] 5. Clamp; 51. First clamp; 52. Second clamp;

[0039] 6. Connecting piece; 61. Main body; 62. Piston cylinder; 63. Connecting rod; 64. Guide rail;

[0040] 7. Driving parts;

[0041] 8. Main axis. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1 As shown, a thin-walled blade disk processing device includes a workbench 1, on which a clamping body 2 is provided, on which a workpiece 3 and a rotating body 4 are provided, and the rotating body 4 can rotate relative to the clamping body 2, and on which a clamp 5 is provided, and the clamp 5 is used to clamp the blades 31 of the workpiece 3.

[0044] In this embodiment, the clamp body adopts a static pressure expansion clamp to clamp the blade disk. Then the blade is clamped by the clamp to support the middle area of ​​the blade to improve the rigidity of the blade. Based on the high rigidity, the blade tip and the front section of the blade are processed. After completing the processing of a blade, the clamp is rotated at a certain angle relative to the blade to clamp the next blade to be processed, and the processing is continued until all blades are processed.

[0045] In this embodiment, the clamp 5 is a pneumatic clamp, which clamps and supports the blade by opening and closing the pneumatic clamp. The processing equipment is a precision five-axis linkage machining center, and the workbench 1 is set on the cradle, which can cooperate with the machine tool to perform five-axis processing.

[0046] like Figure 2 As shown, the rotating body 4 includes a first rotating body 41 and a second rotating body 42, wherein the first rotating body 41 is disposed above the workpiece 3, and the second rotating body 42 is disposed below the workpiece 3;

[0047] The clamp 5 includes a first clamp 51 and a second clamp 52 . The first clamp 51 is disposed on the first rotating body 41 and is used to clamp the upper edge of the blade 31 . The second clamp 52 is disposed on the second rotating body 42 and is used to clamp the lower edge of the blade 31 .

[0048] In order to make the blade more rigid and have better balance stability during processing, two rotating bodies and two clamps are used in this embodiment to clamp the upper and lower edges of the blade respectively.

[0049] like Figure 3 , Figure 4 As shown, a connecting member 6 is provided on the rotating body 4, and the connecting member 6 includes a main body 61, a piston cylinder 62 and a connecting rod 63. The piston cylinder 62 is arranged in the main body 61, and the connecting rod 63 is hinged to the main body 61. The cylinder body of the piston cylinder 62 has a cylinder body recessed hole, and one end of the connecting rod 63 extends into the cylinder body recessed hole. The clamp 5 has a clamp recessed hole, and the other end of the connecting rod 63 extends into the clamp recessed hole. The connecting member 6 is provided with a guide rail 64, and the clamp 5 moves along the guide rail 64.

[0050] Before the clamp is clamped, the two clamping claws of the clamp need to be placed on both sides of the blade to be clamped. In this embodiment, the piston cylinder 62 is driven by oil pressure or air pressure, and the two ends of the connecting rod extend into the cylinder body concave hole and the clamp concave hole respectively. One end is driven by the cylinder body and the other end drives the clamp. The piston cylinder drives the clamp to move along the guide rail through the connecting rod, so that the clamp approaches or moves away from the blade direction.

[0051] The rotating body is rotatably mounted on the clamp body, and the rotating body is locked during processing.

[0052] like Figure 3 and Figure 5 As shown, the clamp body 2 has a first locking mechanism 21, the first locking mechanism 21 includes a first locking cylinder 211 and a locking ball 212, the piston end of the first locking cylinder 211 is provided with a first driving inclined surface 213, the rotating body 4 has a first locking inclined surface 411, and the locking ball 212 is closely attached to the first driving inclined surface 213 and the first locking inclined surface 411;

[0053] When the piston end of the first locking cylinder 211 moves axially along the clamp body 2, the first driving bevel 213 drives the locking ball 212 to move radially along the clamp body 2, and the locking ball 212 drives the rotating body 4 to move axially along the clamp body 2 through the first locking bevel 411, so that the rotating body 4 is axially pressed against the clamp body 2.

[0054] In this embodiment, the first rotating body 41 is locked by the first locking mechanism 21. The lower end of the first rotating body 41 extends into the clamp body, and the lower end of the first rotating body 41 has a cylindrical cavity. The first locking cylinder 211 is an air cylinder or an oil cylinder. The end of the piston rod extends into the cylindrical cavity. There is an annular groove in the cylindrical cavity. The annular groove has the first locking inclined surface 411. The first locking inclined surface 411 is set away from the blade direction. When the piston moves, the first driving inclined surface 213 set at the piston end drives the locking ball 212 radially outward. When the locking ball 212 moves outward, it squeezes the first locking inclined surface 411. The first locking inclined surface 411 is squeezed, so that the first rotating body 41 moves downward, and the downward end surface of the first rotating body 41 will be tightly pressed on the clamp body 2, completing the locking of the first rotating body.

[0055] like Figure 3 and Figure 6 As shown, the clamp body 2 has a second locking mechanism 22, the second locking mechanism 22 includes a second locking cylinder 221 arranged radially along the clamp body 2, the piston end of the second locking cylinder 221 is provided with a second driving inclined surface 222, and the rotating body 4 is provided with a second locking inclined surface 421 abutting against the second driving inclined surface 222;

[0056] When the piston end of the second locking cylinder 221 moves radially, the second driving inclined surface 222 drives the second locking inclined surface 421 to move axially, so that the rotating body 4 is axially pressed against the clamp body 2 .

[0057] In this embodiment, the second rotating body 42 is locked by a second locking mechanism. The second locking cylinder 221 is an air cylinder or an oil cylinder. The piston rod can be extended radially. The end of the piston rod has a second driving inclined surface 222 facing the direction of the blades. The second rotating body 42 is provided with a second locking inclined surface 421 facing away from the direction of the blades. When the piston rod is extended radially, the second driving inclined surface 222 squeezes the second locking inclined surface 421 downward, causing the second rotating body 42 to move downward and be pressed against the rotating body.

[0058] like Figure 7 , Figure 8 As shown, this embodiment further includes a driving member 7 , the rotating body 4 has a driving hole 43 , one end of the driving member 7 is connected to the main shaft 8 , and the other end extends into the driving hole 43 .

[0059] The spindle has high motion accuracy, and a tool handle structure is provided at one end of the driving member 7, through which the driving member 7 is connected to the spindle, and the tool and the driving member 7 can be easily replaced. A lever is provided at the other end of the driving member 7, and the lever matches the driving hole 43. The spindle extends the lever into the driving hole 43, and then moves the rotating body to rotate the rotating body, so that the fixture is aligned with the blade to be processed.

[0060] The device for processing thin-walled blade discs disclosed in the present invention can be used for processing by the following method, and the specific steps are as follows:

[0061] S1. Fix the workpiece to be processed by clamping the workpiece;

[0062] S2, clamping the blade of the workpiece by a clamp, wherein the first clamp clamps the upper edge of the blade, and the second clamp clamps the lower edge of the blade;

[0063] S3, processing a blade of the workpiece;

[0064] S4: The fixture releases the processed blade and moves along the guide rail in a direction away from the blade;

[0065] S5: rotating the workbench so that the driving hole on the rotating body faces the main shaft, driving the driving member through the main shaft so that the end of the driving member extends into the driving hole, the first locking mechanism and the second locking mechanism are loosened, so that the rotating body is in a rotatable state, and the rotating body is moved by the main shaft so that the clamp provided on the rotating body is rotated to the position of the blade to be processed. After the rotating body moves to the position, the first locking mechanism and the second locking mechanism are locked to fix the position of the rotating body;

[0066] S6: Repeat S2 to S5 until all blades are processed.

[0067] When installing the blade disk, first remove the first rotary mechanism, and then install the first rotary mechanism after installing the blade disk. This embodiment uses a static pressure expansion clamp, which is pressurized by the hydraulic system to expand, position and clamp the inner hole of the blade disk. Then adjust the angle and position of the rotary mechanism to ensure that its angle is facing the blade No. 1 of the blade disk, and use a hydraulically driven floating clamp to clamp the blade. The floating clamp will not generate lateral force on the blade. After clamping the blade, the blade is processed.

[0068] When the clamp clamps the blade, the piston cylinder is actuated to drive the clamp through the connecting rod, so that the clamp moves toward the workpiece along the guide rail. The clamp includes a floating clamp, which moves to both sides of the blade to clamp the blade.

[0069] After all blades are processed, the machine tool uses built-in wireless probes and other components to inspect the workpiece. After the workpiece passes the inspection, the first rotating body is removed and the workpiece is removed.

[0070] After processing a blade, the rotation method is not limited to the method in this embodiment. The rotating body can be rotated by setting up another mechanism, or after the main shaft extends the driving member into the driving hole, the torque motor inside the turntable can be used to rotate the clamping body to rotate the rotating body and the clamping body by a certain angle, and the rotation angle is the angle between the two blades.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for processing thin-walled blade disks, comprising a workbench (1), characterized in that: The workbench (1) is provided with a clamp body (2), the clamp body (2) is provided with a workpiece (3) and a rotating body (4), the rotating body (4) is rotatable relative to the clamp body (2), the rotating body (4) is provided with a clamp (5), and the clamp (5) is used to clamp the blade (31) of the workpiece (3); The rotating body (4) is provided with a connecting member (6), the connecting member (6) comprising a main body (61), a piston cylinder (62) and a connecting rod (63), the piston cylinder (62) being arranged in the main body (61), the connecting rod (63) being hinged to the main body (61), the cylinder body of the piston cylinder (62) having a cylinder body concave hole, one end of the connecting rod (63) extending into the cylinder body concave hole, the clamp (5) having a clamp concave hole, the other end of the connecting rod (63) extending into the clamp concave hole, the connecting member (6) being provided with a guide rail (64), the clamp (5) moving along the guide rail (64).

2. The device for processing thin-walled blade disks according to claim 1, characterized in that: The rotating body (4) comprises a first rotating body (41) and a second rotating body (42), wherein the first rotating body (41) is arranged above the workpiece (3), and the second rotating body (42) is arranged below the workpiece (3); The clamp (5) comprises a first clamp (51) and a second clamp (52); the first clamp (51) is arranged on the first rotating body (41) and is used to clamp the upper edge of the blade (31); the second clamp (52) is arranged on the second rotating body (42) and is used to clamp the lower edge of the blade (31).

3. The device for processing thin-walled blade disks according to claim 1, characterized in that: The clamp body (2) has a first locking mechanism (21), the first locking mechanism (21) comprises a first locking cylinder (211) and a locking ball (212), a piston end of the first locking cylinder (211) is provided with a first driving inclined surface (213), the rotating body (4) has a first locking inclined surface (411), and the locking ball (212) is in close contact with the first driving inclined surface (213) and the first locking inclined surface (411); When the piston end of the first locking cylinder (211) moves axially along the clamp body (2), the first driving inclined surface (213) drives the locking ball (212) to move radially along the clamp body (2), and the locking ball (212) drives the rotating body (4) to move axially along the clamp body (2) via the first locking inclined surface (411), so that the rotating body (4) is axially pressed against the clamp body (2).

4. The device for processing thin-walled blade disks according to claim 1, characterized in that: The clamp body (2) has a second locking mechanism (22), the second locking mechanism (22) comprising a second locking cylinder (221) arranged radially along the clamp body (2), a second driving inclined surface (222) being provided at the piston end of the second locking cylinder (221), and the rotating body (4) is provided with a second locking inclined surface (421) abutting against the second driving inclined surface (222); When the piston end of the second locking cylinder (221) moves radially, the second driving inclined surface (222) drives the second locking inclined surface (421) to move axially, so that the rotating body (4) is axially pressed against the clamping body (2).

5. The device for processing thin-walled blade disks according to claim 1, characterized in that: It also includes a driving member (7), the rotating body (4) having a driving hole (43), one end of the driving member (7) being connected to the main shaft (8), and the other end extending into the driving hole (43).

6. A method for processing thin-walled blade discs, using the device for processing thin-walled blade discs according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Fix the workpiece to be processed by clamping the workpiece; S2, a blade that clamps the workpiece through a fixture; S3. Processing the blades of the workpiece.

7. A method for processing thin-walled blade disks according to claim 6, characterized in that: The clamp includes a first clamp and a second clamp, the first clamp clamps the upper edge of the blade, and the second clamp clamps the lower edge of the blade.

8. A method for processing thin-walled blade disks according to claim 6, characterized in that: The clamp is moved toward the workpiece along the guide rail, and the clamp includes a floating clamp. The floating clamp is moved to both sides of the blade to clamp the blade.

9. A method for processing thin-walled blade disks according to claim 6, characterized in that: Also includes S4: The fixture releases the processed blade and moves along the guide rail in a direction away from the blade; S5: rotating the workbench so that the driving hole on the rotating body faces the main shaft, driving the driving member through the main shaft so that the end of the driving member extends into the driving hole, and moving the rotating body through the main shaft so that the fixture provided on the rotating body rotates to the position of the blade to be processed; S6: Repeat S2 to S5 until all blades are processed.

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