Turbine rotor machining tool

Abstract

The utility model discloses a steam turbine rotor machining tool which comprises a base, a plurality of supporting devices are arranged on the base, each supporting device comprises a supporting frame, the top end of each supporting frame is connected with a rolling wheel support in a sliding mode, and the rolling wheel supports are connected with supporting rolling wheels in a rotating mode. And an elastic supporting piece is arranged between the roller bracket and the supporting frame, so that the jerk value of the rotor forge piece during rotation is reduced, the production efficiency is improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining equipment, more particularly relates to a steam turbine rotor machining frock. BACKGROUND

[0002] Steam turbine is also called steam turbine engine, is a kind of rotary steam power device, high temperature and high pressure steam becomes accelerated airflow after passing through fixed nozzle and is injected to blade, makes the rotor with blade row rotates, simultaneously does work to outside, steam turbine is the main equipment of modern thermal power plant, is also used in metallurgical industry, chemical industry and ship power device, the rotor of part steam turbine is formed by forging, and the outer cylindrical surface of the rotor needs to be turned after forging, usually the rotor forging is supported by a plurality of support frames, the roller is arranged on the support frame, and one end of the rotor forging is connected to the lathe spindle through the chuck, the lathe spindle drives the rotor forging to rotate, and then the rotor forging is turned by the turning tool on one side.

[0003] Because the outer cylindrical surface of the rotor forging exists protrusion or depression, and the roller is fixed on the support frame, when the rotor forging rotates, the rotation center of the rotor forging will jump with the rotation center of the lathe spindle, thereby reducing the machining accuracy, and the rotor needs to be machined multiple times, especially in the first few turning processes, the amount of jumping is large, and the position and height of the roller need to be continuously adjusted to reduce, so that the overall machining efficiency of the rotor is reduced, and the increase of machining times means that the rotor forging needs more machining allowance, increasing the material cost. CONTENT

[0004] In view of the defects of the prior art, the utility model provides a steam turbine rotor machining frock, which can reduce the amount of jumping of the rotor forging when the rotor forging rotates, improve the production efficiency and reduce the cost.

[0005] To achieve the above object, the utility model provides the following technical scheme: a steam turbine rotor machining frock, comprising a base, a plurality of support devices are arranged on the base, the support device comprises a support frame, a roller support is slidably connected to the top end of the support frame, a support roller is rotatably connected to the roller support, and an elastic support is arranged between the roller support and the support frame.

[0006] Further, the support frame is provided with a cavity, and the roller support and the elastic support are in the cavity.

[0007] Further, the elastic support comprises a spring, and the two ends of the spring are connected to the support frame and the roller support.

[0008] Further, the roller support is provided with a guide groove, and the support frame is provided with a guide rail corresponding to the guide groove.

[0009] Furthermore, the support frame is slidably connected to the base.

[0010] Furthermore, the support frame is provided with at least two roller brackets.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the support device enables the support roller to always contact the surface of the rotor forging, and it can extend and retract with the changes in the concave and convex surfaces of the rotor forging, thereby reducing the amount of runout when the rotor forging rotates, improving production efficiency and reducing costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the turbine rotor machining tooling of this utility model;

[0013] Figure 2 This is a side view of the support device in the turbine rotor machining tooling of this utility model;

[0014] Figure 3 This is a front structural diagram of the support device in the turbine rotor machining tooling of this utility model;

[0015] Figure 4 This is a schematic diagram of another embodiment of the support device in the turbine rotor machining tooling of this utility model.

[0016] Reference numerals: 1. Base; 2. Support device; 3. Support frame; 4. Roller bracket; 5. Support roller; 6. Spring; 7. Guide groove; 8. Guide rail; 9. Lead screw; 10. Guide rod; 11. Rotor forging; 12. Chuck; 13. Cavity. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0019] Reference Figures 1 to 4 The present invention will be further described below.

[0020] A turbine rotor machining fixture includes a base 1, on which a plurality of support devices 2 are provided. Each support device 2 includes a support frame 3. A roller bracket 4 is slidably connected to the top of the support frame 3. A support roller 5 is rotatably connected to the roller bracket 4. An elastic support member is provided between the roller bracket 4 and the support frame 3.

[0021] like Figure 2 and Figure 3 As shown in this example, preferably, the support frame 3 is provided with a cavity 13, and the roller bracket 4 and the elastic support are both inside the cavity 13.

[0022] like Figure 2 and Figure 3 As shown, in this preferred embodiment, the elastic support includes a spring 6, with the two ends of the spring 6 connected to the support frame 3 and the roller bracket 4.

[0023] Specifically, the elastic support member can also be a support plate with elasticity or a pneumatic spring 6, etc.

[0024] like Figure 2 and Figure 3 As shown in this example, preferably, the roller bracket 4 is provided with a guide groove 7, and the support frame 3 is provided with a guide rail 8 corresponding to the guide groove 7. The stability of the roller bracket 4 moving up and down is ensured by the cooperation between the guide rail 8 and the guide groove 7.

[0025] like Figure 2 and Figure 3 As shown, in this example, preferably, the support frame 3 is slidably connected to the base 1, which facilitates adjusting the position of the support frame 3 to support the rotor forging 11 at a suitable position.

[0026] Specifically, the base 1 is provided with a lead screw 9 and a guide rod 10. The lead screw 9 is threadedly connected to the support frame 3, and the guide rod 10 passes through the support frame 3. The support frame 3 can be moved by driving the lead screw 9 to rotate through a motor.

[0027] like Figure 3 As shown in this example, preferably, the support frame 3 is provided with at least two roller brackets 4.

[0028] like Figure 4 As shown, specifically, three, four or more roller supports 4 can also be used to support the rotor forging 11.

[0029] like Figures 1 to 4 As shown, the two ends of the rotor forging 11 are connected by chucks 12. One chuck 12 can drive the rotor forging 11 to rotate. Several support devices 2 are set below the rotor forging 11 for support. When supported, the roller bracket 4 at the top of the support frame 3 is pressed down, compressing the spring 6 inside the support frame 3, so that the support roller 5 can always contact the surface of the rotor forging 11. When the rotor forging 11 rotates, when the protruding surface of the rotor forging 11 contacts the support roller 5, it will further press down the roller bracket 4. When the concave surface of the rotor forging 11 corresponds to the support roller 5, the spring 6 will lift the roller bracket 4, so that the support roller 5 continues to contact the surface of the rotor forging 11. By supporting the rotor forging 11 with the retractable support roller 5, the amount of runout of the rotor forging 11 when rotating is reduced, production efficiency is improved and costs are reduced.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A steam turbine rotor machining tooling fixture, characterized by: The base is provided with a plurality of supporting devices, the supporting device comprises a supporting frame, the top end of the supporting frame is slidably connected with a roller support, the roller support is rotatably connected with a supporting roller, and the roller support and the supporting frame are provided with an elastic supporting piece.

2. The steam turbine rotor machining tooling fixture of claim 1, wherein: The supporting frame is provided with a cavity, and the roller support and the elastic supporting piece are located in the cavity.

3. The steam turbine rotor machining tooling fixture of claim 1, wherein: The elastic supporting piece comprises a spring, and the two ends of the spring are connected with the supporting frame and the roller support.

4. The steam turbine rotor machining tooling fixture of claim 1, wherein: The roller support is provided with a guide groove, and the supporting frame is provided with a guide rail corresponding to the guide groove.

5. The steam turbine rotor machining tooling fixture of claim 1, wherein: The supporting frame is slidably connected with the base.

6. The steam turbine rotor machining tooling fixture of claim 1, wherein: The supporting frame is provided with at least two roller supports.

Images