Turbine moving blade tenon tooth bottom surface electric spark countersinking clamp

Abstract

The utility model relates to the technical field of turbine moving blade machining, in particular to a turbine moving blade tenon tooth bottom surface electric spark countersinking clamp. The device comprises a bottom plate, a blade containing groove is formed in the middle of the bottom plate, a second tenon tooth clamping seat and a first tenon tooth clamping seat are arranged on the left side and the right side of the blade containing groove respectively, the second tenon tooth clamping seat is detachably connected to the upper end face of the bottom plate through bolts, and the first tenon tooth clamping seat is detachably connected to the upper end face of the bottom plate through bolts; a first tenon tooth clamping groove is formed in the end face of the side, facing the first tenon tooth clamping base, of the upper portion of the second tenon tooth clamping base, and a second tenon tooth clamping groove is formed in the end face of the side, facing the second tenon tooth clamping base, of the upper portion of the first tenon tooth clamping base. The first tenon tooth clamping seat and the second tenon tooth clamping seat can guarantee that the turbine moving blade is not loosened in the machining process, and the machining quality of the turbine moving blade is guaranteed; and the side positioning plate can realize side positioning of the tooth part of the movable blade tenon of the turbine.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine moving blade processing, in particular to an electric spark countersinking fixture for the bottom surface of a turbine moving blade tenon tooth. Background Art

[0002] When the bottom surface of the turbine blade tenon is processed by electric spark countersinking, the turbine blade tenon part needs to be clamped. The stability of the clamping of the turbine blade tenon part directly affects the processing quality of the product.

[0003] Therefore, a fixture is needed that can achieve reliable clamping of the turbine blade tenon, to ensure that the turbine blade tenon portion can be firmly clamped when the bottom surface of the turbine blade tenon is electrospark countersunk, thereby ensuring the processing quality of the turbine blade. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the present application provides a turbine blade tenon bottom surface electric spark countersinking fixture, which can ensure that the turbine blades do not loosen during the processing and ensure the processing quality of the turbine blades.

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

[0006] The electric spark countersinking fixture for the bottom surface of the tenon of a turbine impeller comprises a base plate, a blade accommodating groove is arranged in the middle part of the base plate, a second tenon clamping seat and a first tenon clamping seat are arranged on the left and right sides of the blade accommodating groove respectively, the second tenon clamping seat is detachably connected to the upper end surface of the base plate by bolts, and the first tenon clamping seat is detachably connected to the upper end surface of the base plate by bolts; the first tenon clamping groove is arranged on the end surface of the upper part of the second tenon clamping seat facing the first tenon clamping seat, and the second tenon clamping groove is arranged on the end surface of the upper part of the first tenon clamping seat facing the second tenon clamping seat; a clamping bolt mounting seat is detachably connected to the base plate by bolts, the clamping bolt mounting seat is located on one side of the second tenon clamping seat, and a clamping bolt arranged laterally is threadedly connected to the upper part of the clamping bolt mounting seat, one end of the clamping bolt passes through the clamping bolt mounting seat and is connected to a clamping block, and an end surface of one side of the clamping block can be clamped and contacted with the upper part of the second tenon clamping seat.

[0007] Furthermore, an upper portion of one side of the first tenon clamping seat is detachably connected to a side positioning plate via bolts.

[0008] Furthermore, a T-shaped joint is arranged on one end of the clamping bolt facing the clamping block, and a T-shaped groove is arranged on one end of the clamping block facing the clamping bolt. The T-shaped joint is fitted and connected in the T-shaped groove and can rotate relatively freely.

[0009] Furthermore, the middle portion of the second tenon clamping seat is a thin plate structure.

[0010] Furthermore, a second avoidance groove is provided on an end surface of the second tenon clamping seat facing the first tenon clamping seat, and a first avoidance groove is provided on an end surface of the first tenon clamping seat facing the second tenon clamping seat.

[0011] The beneficial effects of the utility model are as follows:

[0012] The utility model has a compact and reasonable structure and is easy to operate. The first tenon clamping seat and the second tenon clamping seat can ensure that the turbine blades do not loosen during the processing, thereby ensuring the processing quality of the turbine blades; the side positioning plate can realize the side positioning of the tenon portion of the turbine blades; the first avoidance groove, the second avoidance groove and the blade accommodating groove can accommodate the clamped blades, thereby bringing convenience to the clamping processing of the turbine blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front perspective view of the utility model.

[0014] Figure 2 It is a three-dimensional view of the back side of the utility model.

[0015] Figure 3 This is an assembly structure diagram of the clamping bolt and the clamping block of the utility model.

[0016] Among them: 1. Bottom plate; 2. First tenon clamping seat; 3. Second tenon clamping seat; 4. Clamping bolt mounting seat; 5. First tenon clamping groove; 6. Second tenon clamping groove; 7. Clamping bolt; 8. Clamping block; 9. Side positioning plate; 10. Blade receiving groove; 11. T-shaped joint; 12. T-shaped connecting groove; 13. First avoidance groove; 14. Second avoidance groove. DETAILED DESCRIPTION

[0017] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0018] like Figure 1 and Figure 2 As shown, the electric spark countersinking fixture for the bottom surface of the tenon of a turbine impeller includes a base plate 1, a blade receiving groove 10 for receiving turbine blades is arranged in the middle of the base plate 1, a second tenon clamping seat 3 and a first tenon clamping seat 2 are arranged on the left and right sides of the blade receiving groove 10, the second tenon clamping seat 3 is detachably connected to the upper end surface of the base plate 1 by bolts, and the first tenon clamping seat 2 is detachably connected to the upper end surface of the base plate 1 by bolts.

[0019] like Figure 1 and Figure 2As shown, a first tenon clamping groove 5 is provided on the end face of one side of the upper portion of the second tenon clamping seat 3 facing the first tenon clamping seat 2, and a second tenon clamping groove 6 is provided on the end face of one side of the upper portion of the first tenon clamping seat 2 facing the second tenon clamping seat 3. The first tenon clamping groove 5 and the second tenon clamping groove 6 can be matched and contacted with the left and right end faces of the tenon portion of the turbine blade to achieve clamping of the tenon portion of the turbine blade.

[0020] like Figure 1 and Figure 2 As shown, the upper part of one side of the first tenon clamping seat 2 is detachably connected to the side positioning plate 9 by bolts, and the front end of the side positioning plate 9 can be pressed tightly against the side surface of the tenon portion of the turbine moving blade.

[0021] like Figure 1 and Figure 2 As shown, the base plate 1 is connected with a clamping bolt mounting seat 4 which is detachably connected by bolts. The clamping bolt mounting seat 4 is located on one side of the second tenon clamping seat 3. The upper part of the clamping bolt mounting seat 4 is connected with a laterally arranged clamping bolt 7 through a threaded connection. One end of the clamping bolt 7 passes through the clamping bolt mounting seat 4 and is connected to a clamping block 8. One end face of the clamping block 8 can be clamped and contacted with the upper part of the second tenon clamping seat 3, thereby pushing the second tenon clamping seat 3 to clamp the tenon part of the turbine moving blade.

[0022] like Figure 3 As shown, a T-shaped joint 11 is provided at one end of the clamping bolt 7 facing the clamping block 8, and a T-shaped connecting groove 12 is provided at one end of the clamping block 8 facing the clamping bolt 7. The T-shaped joint 11 is fitted and connected in the T-shaped connecting groove 12 and can rotate relatively freely.

[0023] like Figure 1 and Figure 2 As shown, the middle part of the second tenon clamping seat 3 is a thin plate structure, so that the second tenon clamping seat 3 is more easily deformed under the pressure of the clamping block 8, thereby achieving the purpose of allowing the second tenon clamping seat 3 to clamp the tenon part of the turbine impeller.

[0024] like Figure 1 and Figure 2 As shown, a second avoidance groove 14 is provided on the end surface of the second tenon clamping seat 3 facing the first tenon clamping seat 2, and a first avoidance groove 13 is provided on the end surface of the first tenon clamping seat 2 facing the second tenon clamping seat 3. The arrangement of the first avoidance groove 13 and the second avoidance groove 14 allows the turbine blades to extend downward into the avoidance grooves, thereby facilitating the clamping processing of the tenon portion of the turbine blade.

[0025] The working principle of the utility model is: when performing electric spark countersinking of the bottom surface of the tenon of the turbine moving blade, the tenon portion of the turbine moving blade is facing upward, and then the turbine moving blade is placed between the first tenon clamping seat 2 and the second tenon clamping seat 3, and then the clamping bolt 7 is adjusted, and the second tenon clamping seat 3 is pressed by the clamping block 8 to match the first tenon clamping seat 2 to fit and press the tenon portion of the turbine moving blade. Before adjusting the clamping bolt 7, the side surface of the tenon portion of the turbine moving blade is pressed and contacted by the side positioning plate 9 to achieve positioning and clamping. The utility model can ensure that the turbine moving blade does not loosen during the processing process, and ensure the processing quality of the turbine moving blade.

[0026] 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 fixture for electrospark countersinking the bottom surface of a turbine blade tenon, comprising a bottom plate (1), characterized in that: A blade receiving groove (10) is provided in the middle of the base plate (1), and a second tenon tooth clamping seat (3) and a first tenon tooth clamping seat (2) are provided on the left and right sides of the blade receiving groove (10), respectively; the second tenon tooth clamping seat (3) is detachably connected to the upper end surface of the base plate (1) by means of bolts, and the first tenon tooth clamping seat (2) is detachably connected to the upper end surface of the base plate (1) by means of bolts; a first tenon tooth clamping groove (5) is provided on the upper end surface of the second tenon tooth clamping seat (3) facing the first tenon tooth clamping seat (2), and the first tenon tooth clamping seat ( 2) A second tenon clamping groove (6) is provided on the upper end surface facing one side of the second tenon clamping seat (3); the bottom plate (1) is detachably connected to a clamping bolt mounting seat (4) by bolts, the clamping bolt mounting seat (4) is located on one side of the second tenon clamping seat (3), the upper part of the clamping bolt mounting seat (4) is connected to a clamping bolt (7) arranged transversely by threading, one end of the clamping bolt (7) passes through the clamping bolt mounting seat (4) and is connected to a clamping block (8), and an end surface of one side of the clamping block (8) can be pressed and contacted with the upper part of the second tenon clamping seat (3).

2. The electric spark countersinking fixture for the bottom surface of the tenon teeth of turbine impellers according to claim 1, characterized in that: An upper portion of one side of the first tenon clamping seat (2) is detachably connected to a side positioning plate (9) via bolts.

3. The electric spark countersinking fixture for the bottom surface of the tenon teeth of turbine rotor blades according to claim 2, characterized in that: A T-shaped joint (11) is provided at one end of the clamping bolt (7) facing the clamping block (8), and a T-shaped groove (12) is provided at one end of the clamping block (8) facing the clamping bolt (7). The T-shaped joint (11) is fitted and connected in the T-shaped groove (12) and can rotate freely relative to each other.

4. The electric spark countersinking fixture for the bottom surface of the tenon teeth of turbine impellers according to claim 3, characterized in that: The middle part of the second tenon clamping seat (3) is a thin plate structure.

5. The electric spark countersinking fixture for the bottom surface of the tenon teeth of turbine rotor blades according to claim 4, characterized in that: A second avoidance groove (14) is provided on the end surface of the second tenon tooth clamping seat (3) facing the first tenon tooth clamping seat (2), and a first avoidance groove (13) is provided on the end surface of the first tenon tooth clamping seat (2) facing the second tenon tooth clamping seat (3).

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