Fixture device for milling bottom surface of blade root of turbine blade

Abstract

The clamp device for milling the bottom surface of the blade root of the turbine blade comprises a turbine blade clamping frame, a plurality of lifting adjusting boxes are arranged on the inner walls of the front side and the rear side of the turbine blade clamping frame, and a limiting block is fixedly installed on one side of each lifting adjusting box. According to the device, a corresponding fifth motor can be controlled to drive a movable shaft to rotate according to the size and height of a turbine blade, so that the movable shaft can drive a transmission gear to be matched with a tooth groove in the inner wall of a turbine blade clamping frame, and a lifting adjusting box can slide above the inner wall of the turbine blade clamping frame; and a limiting block can conveniently limit the lifting adjusting box, so that in the clamping process of the device, a first motor can be controlled to drive a first lead screw to rotate, the first lead screw can drive a sliding block to move through thread fit, the sliding block can drive the limiting box on the upper portion to move to the position of the turbine blade, and clamping of the device is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of milling processing of the bottom surface of a blade root of a steam turbine blade, in particular to a clamp device used for milling processing of the bottom surface of a blade root of a steam turbine blade. Background Art

[0002] For the fixtures used for machining the bottom surface of the blade root of steam turbines, the industry usually adopts a structure where the blade root is the primary positioning and the profile surface is the auxiliary positioning.

[0003] Publication No. CN 206445543 U discloses a fixture device for milling the bottom surface of a turbine blade root, comprising a template base mounted on one lateral end of the base plate, the template base having an L-shaped positioning groove, a positioning template being replaceably mounted in the L-shaped positioning groove of the template base, the positioning template having a profile positioning surface matching the inner arc surface of the blade, and a template positioning block and a supporting top block fixedly mounted on both longitudinal sides of the template base;

[0004] When in use, the existing device is difficult to clamp and fix turbine blades of different shapes, sizes and heights, so the staff needs to manually adjust the angle of the clamping device, which makes the work efficiency low. Therefore, we propose a clamping device for milling the bottom surface of the root of the turbine blade. Utility Model Content

[0005] In order to solve the above problems, the present invention proposes a clamping device for milling the bottom surface of a blade root of a steam turbine blade, so as to solve the above problems existing in the prior art.

[0006] An embodiment of the present application provides a clamping device for milling the bottom surface of a turbine blade root, comprising: a turbine blade clamping frame, a plurality of lifting adjustment boxes are provided on the front and rear inner walls of the turbine blade clamping frame, a limit block is fixedly installed on one side of the lifting adjustment box, the limit block is slidably installed on the inner side of the turbine blade clamping frame, a control box is fixedly installed on the bottom of the limit block, a first motor is fixedly installed on one side of the control box, a first screw rod is fixedly installed on the output end of the first motor, and a sliding block is threadedly installed on the outer side of the first screw rod; a second motor is fixedly installed on one side of the sliding block, and a drive shaft is fixedly installed on the output end of the second motor.

[0007] As a further improvement of the above solution, a limit box is fixedly installed on one side of the drive shaft, a third motor is fixedly installed on the inner wall of one side of the limit box, a second screw rod is fixedly installed on the output end of the third motor, and a movable frame is threadedly installed on the outer side of the second screw rod.

[0008] As a further improvement of the above scheme, a fixed frame is fixedly installed on one side of the movable frame, a fourth motor is fixedly installed on one side of the fixed frame, a driving roller is fixedly installed on the output end of the fourth motor, a movable block is fixedly installed on the outer side of the driving roller, and a turbine blade clamping block is fixedly installed on one side of the movable block.

[0009] As a further improvement of the above solution, a fifth motor is fixedly mounted on one side of the lifting and regulating box, a movable shaft is fixedly mounted on the output end of the fifth motor, and a plurality of transmission gears are fixedly mounted on the outer side of the movable shaft.

[0010] As a further improvement of the above solution, limiting sliding grooves are provided on the front and rear inner walls of the turbine blade clamping frame, and the limiting blocks are slidably installed on the inner sides of the limiting sliding grooves.

[0011] As a further improvement of the above solution, a plurality of tooth grooves are provided on the front and rear inner walls of the turbine blade clamping frame, and the transmission gear is engaged with adjacent tooth grooves.

[0012] As a further improvement of the above solution, the shape of the fixing frame is C-shaped, and the shape of the turbine blade clamping block is arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The device can control the corresponding fifth motor to drive the movable shaft to rotate according to the size and height of the turbine blade, so that the movable shaft can drive the transmission gear to cooperate with the tooth groove on the inner wall of the turbine blade clamping frame, so that the lifting adjustment box can slide above the inner wall of the turbine blade clamping frame. The limit block is convenient for limiting the lifting adjustment box. During the clamping process, the device can control the first motor to drive the first screw rod to rotate, so that the first screw rod can drive the sliding block to move through the threaded cooperation, so that the sliding block can drive the upper limit box to move to the position of the turbine blade, making the clamping of the device more convenient.

[0015] Since the shape of the turbine blade is arc-shaped, the second motor can be controlled to drive the drive shaft and the limit box to adjust and rotate according to the angle of the turbine blade, and the third motor inside the limit box can control the second screw rod to drive the movable frame to slide, so that the fourth motor of the movable frame can drive the drive roller and the movable block to rotate, so that the movable block can adjust the angle of the turbine blade clamping block, so that the device has a larger clamping area for the turbine blade and a larger adjustable range, thereby achieving a better clamping effect.

[0016] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the explosion part structure of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the explosion part in the utility model.

[0021] In the figure: 1. Turbine blade clamping frame; 2. Lifting adjustment box; 3. Limit block; 4. Control box; 5. First motor; 6. First screw rod; 7. Sliding block; 8. Second motor; 9. Drive shaft; 10. Limit box; 11. Third motor; 12. Second screw rod; 13. Moving frame; 14. Fixed frame; 15. Fourth motor; 16. Drive roller; 17. Movable block; 18. Turbine blade clamping block; 19. Fifth motor; 20. Movable shaft; 21. Transmission gear. DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0023] Reference Figure 1-4 As shown, a clamping device for milling the bottom surface of the root of a turbine blade comprises: a turbine blade clamping frame 1, a plurality of lifting adjustment boxes 2 are provided on the inner walls on the front and rear sides of the turbine blade clamping frame 1, a limit block 3 is fixedly installed on one side of the lifting adjustment box 2, the limit block 3 is slidably installed on the inner side of the turbine blade clamping frame 1, a control box 4 is fixedly installed on the bottom of the limit block 3, a first motor 5 is fixedly installed on one side of the control box 4, a first screw rod 6 is fixedly installed on the output end of the first motor 5, and a sliding block 7 is threadedly installed on the outer side of the first screw rod 6; a second motor 8 is fixedly installed on one side of the sliding block 7, and a drive shaft 9 is fixedly installed on the output end of the second motor 8.

[0024] In this embodiment, a limit box 10 is fixedly installed on one side of the drive shaft 9, a third motor 11 is fixedly installed on the inner wall of one side of the limit box 10, a second screw rod 12 is fixedly installed on the output end of the third motor 11, and a movable frame 13 is threadedly installed on the outer side of the second screw rod 12.

[0025] In this embodiment, a fixed frame 14 is fixedly installed on one side of the movable frame 13, a fourth motor 15 is fixedly installed on one side of the fixed frame 14, a driving roller 16 is fixedly installed on the output end of the fourth motor 15, a movable block 17 is fixedly installed on the outer side of the driving roller 16, and a turbine blade clamping block 18 is fixedly installed on one side of the movable block 17.

[0026] In this embodiment, a fifth motor 19 is fixedly installed on one side of the lifting and regulating box 2, a movable shaft 20 is fixedly installed on the output end of the fifth motor 19, and a plurality of transmission gears 21 are fixedly installed on the outer side of the movable shaft 20; the transmission gears 21 can cooperate with the tooth grooves after rotation, and the plurality of lifting and regulating boxes 2 can clamp turbine blades of different angle specifications after lifting.

[0027] In this embodiment, limiting grooves are provided on the front and rear inner walls of the turbine blade clamping frame 1, and the limiting blocks 3 are slidably installed on the inner sides of the limiting grooves; the limiting grooves facilitate the limiting blocks 3 to limit the lifting and adjusting box 2, so that the lifting and adjusting box 2 can only slide after being subjected to force, making the lifting and adjusting box 2 more stable during the sliding process.

[0028] In this embodiment, a plurality of tooth grooves are provided on the front and rear inner walls of the turbine blade clamping frame 1, and the transmission gear 21 engages with adjacent tooth grooves; the tooth grooves facilitate the transmission gear 21 to drive the lifting and adjusting box 2 to move up and down after rotation, so that the device can clamp the turbine blades at different positions.

[0029] In this embodiment, the shape of the fixing frame 14 is C-shaped, and the shape of the turbine blade clamping block 18 is arc-shaped; the contact area between the turbine blade clamping block 18 and the turbine blade is wider, and the turbine blade clamping block 18 can make its fitting area larger after adjusting the angle, so that the clamping effect is better.

[0030] The specific operation is that the device can control the corresponding fifth motor 19 to drive the movable shaft 20 to rotate according to the size and height of the turbine blade, so that the movable shaft 20 can drive the transmission gear 21 to cooperate with the tooth groove of the inner wall of the turbine blade clamping frame 1, so that the lifting adjustment box 2 can slide above the inner wall of the turbine blade clamping frame 1, and the limit block 3 is convenient for limiting the lifting adjustment box 2, so that during the clamping process, the device can control the first motor 5 to drive the first screw rod 6 to rotate, so that the first screw rod 6 can drive the sliding block 7 to move through the threaded cooperation, so that the sliding block 7 can drive the upper limit box 10 to move The device can be moved to the position of the turbine blade, making it easier to clamp the device; since the shape of the turbine blade is arc-shaped, the second motor 8 can be controlled to drive the drive shaft 9 and the limit box 10 to adjust and rotate according to the angle of the turbine blade, and the third motor 11 inside the limit box 10 can control the second screw rod 12 to drive the movable frame 13 to slide, so that the fourth motor 15 of the movable frame 13 can drive the drive roller 16 and the movable block 17 to rotate, so that the movable block 17 can adjust the angle of the turbine blade clamping block 18, so that the device has a larger clamping area for the turbine blade and a larger adjustable range, thereby achieving a better clamping effect.

[0031] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A fixture device for milling the bottom surface of a turbine blade root, characterized in that: include: A turbine blade clamping frame (1) is provided with a plurality of lifting adjustment boxes (2) on the inner walls of the front and rear sides of the turbine blade clamping frame (1); a limit block (3) is fixedly installed on one side of the lifting adjustment box (2); the limit block (3) is slidably installed on the inner side of the turbine blade clamping frame (1); a control box (4) is fixedly installed on the bottom of the limit block (3); a first motor (5) is fixedly installed on one side of the control box (4); a first screw rod (6) is fixedly installed on the output end of the first motor (5); a sliding block (7) is threadedly installed on the outer side of the first screw rod (6); a second motor (8) is fixedly installed on one side of the sliding block (7); a drive shaft (9) is fixedly installed on the output end of the second motor (8).

2. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 1, characterized in that: A limit box (10) is fixedly mounted on one side of the drive shaft (9), a third motor (11) is fixedly mounted on an inner wall of one side of the limit box (10), a second screw rod (12) is fixedly mounted on an output end of the third motor (11), and a movable frame (13) is threadedly mounted on the outer side of the second screw rod (12).

3. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 2, characterized in that: A fixed frame (14) is fixedly mounted on one side of the movable frame (13), a fourth motor (15) is fixedly mounted on one side of the fixed frame (14), a driving roller (16) is fixedly mounted on the output end of the fourth motor (15), a movable block (17) is fixedly mounted on the outer side of the driving roller (16), and a turbine blade clamping block (18) is fixedly mounted on one side of the movable block (17).

4. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 1, characterized in that: A fifth motor (19) is fixedly mounted on one side of the lifting and regulating box (2), a movable shaft (20) is fixedly mounted on the output end of the fifth motor (19), and a plurality of transmission gears (21) are fixedly mounted on the outer side of the movable shaft (20).

5. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 1, characterized in that: The front and rear inner walls of the turbine blade clamping frame (1) are provided with limiting sliding grooves, and the limiting blocks (3) are slidably mounted on the inner sides of the limiting sliding grooves.

6. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 4, characterized in that: A plurality of tooth grooves are provided on the front and rear inner walls of the turbine blade clamping frame (1), and the transmission gear (21) is meshed with adjacent tooth grooves.

7. The fixture device for milling the bottom surface of a steam turbine blade root according to claim 3, characterized in that: The fixing frame (14) is in a C-shape, and the turbine blade clamping block (18) is in an arc shape.

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