Fixture for grinding datum plane of turbine moving blade of gas turbine

Abstract

The utility model relates to the technical field of turbine moving blade grinding machining, in particular to a gas turbine moving blade datum plane grinding clamp. The tool comprises a bottom plate, the bottom plate is detachably connected with a blade body supporting block through a bolt, the blade body supporting block is used for supporting the lower end face of a blade body of the turbine moving blade to be machined, a blade body pressing assembly is arranged over the blade body supporting block, and the blade body pressing assembly can press the blade body of the turbine moving blade to the blade body supporting block; tenon tooth part supporting blocks are arranged on one side of the blade body supporting block side by side, the tenon tooth part supporting blocks are used for supporting the lower end face of a tenon tooth part of the turbine moving blade to be machined, and tenon tooth part movable supporting blocks capable of sliding up and down are arranged in the tenon tooth part supporting blocks; the upper end face of the tenon tooth part movable supporting block extends out of the upper end face of the tenon tooth part supporting block and can make contact with the lower end face of a tenon tooth part of the turbine moving blade. The turbine movable blade clamping device can effectively clamp and fix the turbine movable blade, the machining accuracy of the reference surface of the turbine movable blade is guaranteed, and therefore the follow-up blade machining quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine moving blade grinding, in particular to a reference surface grinding fixture for a turbine moving blade of a gas turbine. Background Art

[0002] Datum surface processing is a very important part of gas turbine turbine blade processing. Datum surface can ensure the stability and correct processing position of parts during processing. At the same time, the machining datum surface can also conduct the processing force and heat during processing, so that the parts will not be deformed during processing, ensuring the accuracy and quality of the processed parts. During the blade processing, due to the complexity of the blade shape, the datum surface needs to be changed. Processing an accurate datum surface is crucial for the subsequent blade processing.

[0003] Therefore, a fixture capable of clamping a gas turbine turbine moving blade for reference surface grinding is needed. Utility Model Content

[0004] In view of the shortcomings in the above-mentioned existing production technology, the present application provides a gas turbine turbine blade reference surface grinding fixture, which can effectively clamp and fix the turbine blades during the grinding process, ensuring the accuracy of the turbine blade reference surface processing, thereby ensuring the quality of subsequent blade processing.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A gas turbine turbine blade reference surface grinding fixture comprises a base plate, wherein the base plate is detachably connected to a blade support block by bolts, the blade support block is used to support the lower end surface of the blade of the turbine blade to be processed, and a blade clamping assembly is arranged directly above the blade support block, and the blade clamping assembly can press the blade of the turbine blade onto the blade support block; tenon tooth support blocks are arranged side by side on one side of the blade support block, the tenon tooth support block is used to support the lower end surface of the tenon tooth portion of the turbine blade to be processed, and a tenon tooth portion movable support block that can slide up and down is arranged in the tenon tooth portion support block, the upper end surface of the tenon tooth portion movable support block extends out of the upper end surface of the tenon tooth portion support block and can contact the lower end surface of the tenon tooth portion of the turbine blade; the lower end surface of the tenon tooth portion movable support block is an inclined surface, and the tenon tooth portion support block is connected to the movable support block adjusting screw by a thread, one end of the movable support block adjusting screw contacts the lower end surface of the tenon tooth portion movable support block, and the other end of the movable support block adjusting screw extends out of the tenon tooth portion support block.

[0007] Furthermore, three protruding blade support convex blocks are arranged on the upper end surface of the blade support block, and the three blade support convex blocks are used to support the lower end surfaces of the upper and lower edge plates of the blade.

[0008] Furthermore, the blade body clamping assembly includes a movable mounting plate arranged across the blade body supporting block, one end of the movable mounting plate is rotatably connected to the upper end of the first fixed mounting plate by a pin shaft, the lower end of the first fixed mounting plate is detachably connected to the base plate by bolts, the other end of the movable mounting plate is detachably connected to the second fixed mounting plate by bolts, the second fixed mounting plate is detachably connected to the base plate by bolts, two vertically penetrating pressure block movable holes are arranged side by side on the movable mounting plate, a blade body pressure block that can slide up and down is arranged in each pressure block movable hole, the lower end of the blade body pressure block extends out of the pressure block movable hole and can press and contact the upper end surface of the blade body of the turbine moving blade, the upper end of the blade body pressure block is connected to the lower end of the pressure block adjusting screw, the pressure block adjusting screw is threadedly connected to the adjusting plate, the upper end of the pressure block adjusting screw extends out of the adjusting plate, and the adjusting plate is detachably connected to the movable mounting plate by bolts.

[0009] Furthermore, a support block movable hole that passes through the left and right is set on the first fixed mounting plate, and a blade auxiliary support block that can slide left and right is set in the support block movable hole. One end of the blade auxiliary support block extends out of the support block movable hole and can press and contact the blade side of the turbine blade. The other end of the blade auxiliary support block is connected to one end of the auxiliary adjusting screw, and the other end of the auxiliary adjusting screw extends out of the support block movable hole. The auxiliary adjusting screw is threadedly connected to the auxiliary adjusting plate, and the auxiliary adjusting plate is detachably connected to the first fixed mounting plate by bolts.

[0010] Furthermore, the side surface of the second fixed mounting plate is connected to an auxiliary positioning block, and the auxiliary positioning block can contact the side surface of the blade body of the turbine rotor blade.

[0011] Furthermore, the tenon portion support block is connected to the tenon portion side adjusting screw through a thread, one end of the tenon portion side adjusting screw is connected to the tenon portion side positioning block, the tenon portion side positioning block extends out of the tenon portion support block and can contact the tenon portion side surface of the turbine blade, and the other end of the tenon portion side adjusting screw extends out of the tenon portion support block.

[0012] Furthermore, a side mounting block is arranged on the side of the tenon tooth support block, and the side mounting block is detachably connected to the base plate by bolts.

[0013] Furthermore, the side mounting block is connected to the tenon auxiliary adjusting screw by a thread, one end of the tenon auxiliary adjusting screw is connected to the tenon auxiliary positioning block, the tenon auxiliary positioning block extends out of the side mounting block and can contact the tenon side of the turbine blade, the other end of the tenon auxiliary adjusting screw extends out of the side mounting block, the side mounting block is connected to the tenon auxiliary positioning pin, and the tenon auxiliary positioning pin can position and contact the tenon side of the turbine blade.

[0014] Furthermore, the bottom plate is detachably connected to an auxiliary mounting block by bolts, the auxiliary mounting block is located on one side of the blade support block, and the auxiliary positioning pins are connected to the auxiliary mounting block, and the auxiliary positioning pins can be positioned to contact the side of the blade edge plate of the turbine moving blade.

[0015] Furthermore, the bottom plate is provided with a pressure plate mounting block which is detachably connected by bolts, and the upper end of the pressure plate mounting block is provided with a tenon pressure plate of an L-shaped structure which is detachably connected by bolts, and one end of the tenon pressure plate can be pressed tightly against the upper end surface of the tenon portion of the turbine blade.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model can effectively clamp and fix the turbine moving blades, ensure the machining accuracy of the turbine moving blade reference surface, and thus ensure the quality of subsequent blade machining; the utility model improves the stability of the turbine moving blade clamping by arranging the positioning blocks on the side, and prevents the blades from being twisted and deformed due to the influence of grinding force during the machining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model.

[0019] Figure 2 It is a three-dimensional diagram of the blade support block of the utility model.

[0020] Figure 3 This is the front view of the blade pressing assembly of the utility model.

[0021] Figure 4 for Figure 3 Middle AA section view.

[0022] Figure 5 for Figure 3 Middle BB section view.

[0023] Figure 6 This is a structural diagram of the tenon tooth support block of the utility model.

[0024] Figure 7 This is a structural diagram of the tenon tooth side positioning block of the utility model.

[0025] Figure 8 This is a structural diagram of the auxiliary positioning block of the tenon tooth portion of the utility model.

[0026] Fig. 9 This is a structural diagram of the movable support block of the tenon tooth portion of the utility model.

[0027] Fig.10 This is a structural diagram of the auxiliary positioning pin arrangement of the utility model.

[0028] Fig.11 This is a structural diagram of the tenon tooth portion pressure plate arrangement of the utility model.

[0029] Wherein: 1. bottom plate; 2. blade support block; 2.1. blade support convex block; 3. tenon support block; 4. side mounting block; 5. auxiliary mounting block; 6. pressure plate mounting block; 7. tenon pressure plate; 8. auxiliary positioning pin; 9. first fixed mounting plate; 10. movable mounting plate; 11. second fixed mounting plate; 12. pin shaft; 13. blade pressure block; 14. pressure block adjusting screw; 15. adjusting plate; 16. blade auxiliary support block; 17. auxiliary adjusting screw; 18. auxiliary adjusting plate; 19. auxiliary positioning block; 20. tenon movable support block; 21. movable support block adjusting screw; 22. tenon side adjusting screw; 23. tenon side positioning block; 24. tenon auxiliary adjusting screw; 25. tenon auxiliary positioning block; 26. tenon auxiliary positioning pin. DETAILED DESCRIPTION

[0030] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, a gas turbine turbine blade reference surface grinding fixture includes a base plate 1, and a blade support block 2 is detachably connected to the base plate 1 by bolts, and the blade support block 2 is used to support the lower end surface of the blade of the turbine blade to be processed. A blade clamping assembly is arranged directly above the blade support block 2, and the blade clamping assembly can press the blade of the turbine blade onto the blade support block 2.

[0032] like Figure 2 As shown, three protruding blade support ridges 2.1 are arranged on the upper end surface of the blade support block 2, and the three blade support ridges 2.1 are used to support the lower end surfaces of the upper and lower edge plates of the blade.

[0033] like Figure 3 As shown, the blade body pressing assembly includes a movable mounting plate 10 arranged across the blade body support block 2, one end of the movable mounting plate 10 is rotatably connected to the upper end of the first fixed mounting plate 9 through a pin shaft 12, and the lower end of the first fixed mounting plate 9 is detachably connected to the bottom plate 1 through bolts. The other end of the movable mounting plate 10 is detachably connected to the second fixed mounting plate 11 through bolts, and the second fixed mounting plate 11 is detachably connected to the bottom plate 1 through bolts.

[0034] like Figure 3 and Figure 4As shown, two vertically penetrating pressure block movable holes are arranged side by side on the movable mounting plate 10, and a blade body pressure block 13 capable of sliding up and down is arranged in each pressure block movable hole. The lower end of the blade body pressure block 13 extends out of the pressure block movable hole and can press and contact the upper end surface of the blade body of the turbine moving blade. The upper end of the blade body pressure block 13 is connected to the lower end of the pressure block adjustment screw 14, and the pressure block adjustment screw 14 is threadedly connected to the adjustment plate 15. The upper end of the pressure block adjustment screw 14 extends out of the adjustment plate 15, and the adjustment plate 15 is detachably connected to the movable mounting plate 10 by bolts. Manually rotating the pressure block adjustment screw 14 can adjust the upper and lower positions of the blade body pressure block 13, and finally adjust the degree of compression of the blade body of the turbine moving blade.

[0035] like Figure 3 and Figure 5 As shown, the first fixed mounting plate 9 is provided with a supporting block movable hole that passes through left and right, and a blade auxiliary supporting block 16 that can slide left and right is provided in the supporting block movable hole. One end of the blade auxiliary supporting block 16 extends out of the supporting block movable hole and can press and contact the blade side of the turbine moving blade. The other end of the blade auxiliary supporting block 16 is connected to one end of the auxiliary adjusting screw 17, and the other end of the auxiliary adjusting screw 17 extends out of the supporting block movable hole. The auxiliary adjusting screw 17 is threadedly connected to the auxiliary adjusting plate 18, and the auxiliary adjusting plate 18 is detachably connected to the first fixed mounting plate 9 by bolts. Manually rotating the auxiliary adjusting screw 17 can drive the blade auxiliary supporting block 16 to adjust its position left and right, and finally adjust the degree of pressing on the blade side of the turbine moving blade.

[0036] like Figure 3 As shown, the side of the second fixed mounting plate 11 is connected to an auxiliary positioning block 19, and the auxiliary positioning block 19 can contact the side of the blade body of the turbine rotor blade to achieve auxiliary positioning support for the side of the blade body of the turbine rotor blade.

[0037] like Figure 1 and Figure 6 As shown, a tenon support block 3 is arranged side by side on one side of the blade support block 2, and the tenon support block 3 is used to support the lower end surface of the tenon portion of the turbine moving blade to be processed. A tenon movable support block 20 capable of sliding up and down is arranged inside the tenon support block 3, and the upper end surface of the tenon movable support block 20 extends out of the upper end surface of the tenon support block 3 and can contact the lower end surface of the tenon portion of the turbine moving blade. A side mounting block 4 is arranged on the side of the tenon support block 3, and the side mounting block 4 is detachably connected to the base plate 1 by bolts.

[0038] like Figure 7As shown, the tenon support block 3 is connected to the tenon side adjusting screw 22 by a thread, one end of the tenon side adjusting screw 22 is connected to the tenon side positioning block 23, the tenon side positioning block 23 extends out of the tenon support block 3 and can contact the tenon side of the turbine moving blade, and the other end of the tenon side adjusting screw 22 extends out of the tenon support block 3. Rotating the tenon side adjusting screw 22 can push the tenon side positioning block 23 to move forward and backward, thereby adjusting the degree of tightening of the tenon side contacting the turbine moving blade.

[0039] like Figure 8 As shown, the side mounting block 4 is connected to the tenon tooth auxiliary adjustment screw 24 by a thread, one end of the tenon tooth auxiliary adjustment screw 24 is connected to the tenon tooth auxiliary positioning block 25, and the tenon tooth auxiliary positioning block 25 extends out of the side mounting block 4 and can contact the tenon tooth side of the turbine moving blade. The other end of the tenon tooth auxiliary adjustment screw 24 extends out of the side mounting block 4. The side mounting block 4 is connected to the tenon tooth auxiliary positioning pin 26, which can position and contact the tenon tooth side of the turbine moving blade.

[0040] like Fig. 9 As shown, the lower end surface of the tenon tooth movable support block 20 is an inclined surface. The tenon tooth support block 3 is connected to the movable support block adjusting screw 21 through a thread, one end of the movable support block adjusting screw 21 contacts the lower end surface of the tenon tooth movable support block 20, and the other end of the movable support block adjusting screw 21 extends out of the tenon tooth support block 3. Rotating the movable support block adjusting screw 21 can push the tenon tooth movable support block 20 to move up and down to adjust the position.

[0041] like Figure 1 and Fig.10 As shown, the base plate 1 is detachably connected to an auxiliary mounting block 5 by bolts, the auxiliary mounting block 5 is located on one side of the blade support block 2, and the auxiliary mounting block 5 is connected to an auxiliary positioning pin 8, which can position the side of the blade edge plate that contacts the turbine moving blade.

[0042] like Figure 1 and Fig.11 As shown, the base plate 1 has a pressure plate mounting block 6 detachably connected by bolts, and the upper end of the pressure plate mounting block 6 is detachably connected to an L-shaped tenon pressure plate 7 by bolts, and one end of the tenon pressure plate 7 can be pressed tightly on the upper end surface of the tenon portion of the turbine moving blade.

[0043] The working principle of the utility model is: when performing turbine blade reference surface grinding, the turbine blade is placed on the blade body support block 2 and the tenon tooth support block 3, and then the blade body of the turbine blade is pressed up and down by the blade body clamping assembly, and at the same time, the tenon tooth pressure plate 7 is adjusted to press the tenon tooth part of the turbine blade up and down.

[0044] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A gas turbine turbine blade reference surface grinding fixture, comprising a base plate (1), characterized in that: The base plate (1) is detachably connected to a blade support block (2) by means of bolts. The blade support block (2) is used to support the lower end surface of the blade of the turbine moving blade to be processed. A blade clamping assembly is arranged directly above the blade support block (2). The blade clamping assembly can clamp the blade of the turbine moving blade onto the blade support block (2). Tenon tooth support blocks (3) are arranged side by side on one side of the blade support block (2). The tenon tooth support block (3) is used to support the lower end surface of the tenon tooth portion of the turbine moving blade to be processed. A blade clamping assembly that can be moved up and down is arranged inside the tenon tooth support block (3). A sliding tenon tooth movable support block (20), the upper end surface of the tenon tooth movable support block (20) extending out of the upper end surface of the tenon tooth support block (3) and being able to contact the lower end surface of the tenon tooth of the turbine moving blade; the lower end surface of the tenon tooth movable support block (20) is an inclined surface, the tenon tooth support block (3) is connected to the movable support block adjusting screw (21) via a thread, one end of the movable support block adjusting screw (21) contacts the lower end surface of the tenon tooth movable support block (20), and the other end of the movable support block adjusting screw (21) extends out of the tenon tooth support block (3).

2. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 1, characterized in that: The upper end surface of the blade support block (2) is provided with three raised blade support convex blocks (2.1), and the three blade support convex blocks (2.1) are used to support the lower end surfaces of the upper and lower edge plates of the blade.

3. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 1, characterized in that: The blade body pressing assembly comprises a movable mounting plate (10) arranged across the blade body support block (2); one end of the movable mounting plate (10) is rotatably connected to the upper end of the first fixed mounting plate (9) via a pin shaft (12); the lower end of the first fixed mounting plate (9) is detachably connected to the bottom plate (1) via bolts; the other end of the movable mounting plate (10) is detachably connected to the second fixed mounting plate (11) via bolts; the second fixed mounting plate (11) is detachably connected to the bottom plate (1) via bolts; and the movable mounting plate (10) is arranged side by side. Two vertically extending pressure block movable holes are provided, each pressure block movable hole is provided with a blade body pressure block (13) capable of sliding up and down, the lower end of the blade body pressure block (13) extends out of the pressure block movable hole and is capable of pressing and contacting the upper end surface of the blade body of the turbine moving blade, the upper end of the blade body pressure block (13) is connected to the lower end of the pressure block adjustment screw (14), the pressure block adjustment screw (14) is threadedly connected to the adjustment plate (15), the upper end of the pressure block adjustment screw (14) extends out of the adjustment plate (15), and the adjustment plate (15) is detachably connected to the movable mounting plate (10) by bolts.

4. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 3, characterized in that: The first fixed mounting plate (9) is provided with a support block movable hole extending therethrough, a blade auxiliary support block (16) capable of sliding left and right is provided in the support block movable hole, one end of the blade auxiliary support block (16) extends out of the support block movable hole and is capable of pressing and contacting the blade side surface of the turbine moving blade, the other end of the blade auxiliary support block (16) is connected to one end of an auxiliary adjustment screw (17), the other end of the auxiliary adjustment screw (17) extends out of the support block movable hole, the auxiliary adjustment screw (17) is threadedly connected to an auxiliary adjustment plate (18), and the auxiliary adjustment plate (18) is detachably connected to the first fixed mounting plate (9) by means of bolts.

5. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 3, characterized in that: The side surface of the second fixed mounting plate (11) is connected to an auxiliary positioning block (19), and the auxiliary positioning block (19) is capable of contacting the side surface of the blade body of the turbine rotor blade.

6. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 1, characterized in that: The tenon portion support block (3) is connected to the tenon portion side adjustment screw (22) via a threaded connection; one end of the tenon portion side adjustment screw (22) is connected to the tenon portion side positioning block (23); the tenon portion side positioning block (23) extends out of the tenon portion support block (3) and is capable of contacting the tenon portion side surface of the turbine rotor blade; the other end of the tenon portion side adjustment screw (22) extends out of the tenon portion support block (3).

7. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 6, characterized in that: A side mounting block (4) is arranged on the side of the tenon tooth support block (3), and the side mounting block (4) is detachably connected to the base plate (1) via bolts.

8. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 7, characterized in that: The side mounting block (4) is connected to the tenon tooth auxiliary adjustment screw (24) through a threaded connection; one end of the tenon tooth auxiliary adjustment screw (24) is connected to the tenon tooth auxiliary positioning block (25); the tenon tooth auxiliary positioning block (25) extends out of the side mounting block (4) and is capable of contacting the tenon tooth side surface of the turbine moving blade; the other end of the tenon tooth auxiliary adjustment screw (24) extends out of the side mounting block (4); the side mounting block (4) is connected to the tenon tooth auxiliary positioning pin (26); the tenon tooth auxiliary positioning pin (26) is capable of positioning and contacting the tenon tooth side surface of the turbine moving blade.

9. A gas turbine turbine blade reference surface grinding fixture according to any one of claims 1 to 8, characterized in that: The bottom plate (1) is detachably connected to an auxiliary mounting block (5) by means of bolts. The auxiliary mounting block (5) is located on one side of the blade support block (2). The auxiliary mounting block (5) is connected to an auxiliary positioning pin (8). The auxiliary positioning pin (8) can be positioned to contact the side of the blade edge plate of the turbine moving blade.

10. A gas turbine turbine blade reference surface grinding fixture as claimed in claim 9, characterized in that: The bottom plate (1) is detachably connected to a pressure plate mounting block (6) via bolts, and the upper end of the pressure plate mounting block (6) is detachably connected to a tenon tooth portion pressure plate (7) of an L-shaped structure via bolts, and one end of the tenon tooth portion pressure plate (7) can be pressed tightly against the upper end surface of the tenon tooth portion of the turbine rotor blade.

Images