Hydro-generator rotor shaft machining clamp

Abstract

The utility model discloses a hydro-generator rotor shaft machining clamp which comprises a rectangular frame, an installation frame is fixedly arranged at the bottom of the rectangular frame, fixing clamps are arranged on the four side walls in the rectangular frame in a threaded connection mode, and circular positioning rings are fixedly arranged at the front end and the rear end of the rectangular frame. The fixing clamp comprises an adjusting screw rod arranged at the center of the side wall of the rectangular frame in a threaded connection mode, the end, extending into the rectangular frame, of the adjusting screw rod is rotationally connected with an arc-shaped clamping plate, and a guide rod is fixedly arranged on the outer side face of the arc-shaped clamping plate. The circular positioning rings are arranged at the front end and the rear end of the rectangular frame, the rotor shaft penetrates through the two circular positioning rings, the diameter of the circular positioning rings is slightly larger than that of the rotor shaft, and then the rotor shaft is fixed through the four arc-shaped clamping plates, so that the rotor shaft can be fixed at the geometric center of the rectangular frame, and convenience is provided for subsequent machining operation.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture devices, in particular to a machining fixture for a rotor shaft of a hydro-turbine generator. Background Art

[0002] A hydro-turbine generator is a device that converts water energy into electrical energy, and its rotor shaft is one of the core components of the hydro-turbine generator. The machining quality of the rotor shaft directly affects the operating efficiency and safety of the hydro-turbine generator. In the traditional rotor shaft machining process, due to the complex shape and material of the rotor shaft, there are often problems such as difficulty in fixing and low machining accuracy during the machining process. Therefore, a fixture that can firmly clamp the rotor shaft and improve the machining accuracy is needed.

[0003] The reference patent number is CN201420148656.3, and the name is a Chinese utility model patent for a hydro-generator rotor shaft processing fixture. The hexagonal frame is composed of an upper half and a lower half, and each side is provided with a positioning stud. The rotor shaft is fixed by six positioning studs. Although the above scheme can fix the rotor shaft, it is difficult to ensure that the rotor shaft is located at the center of the frame. If it is eccentrically fixed, it is easy to cause positioning difficulties in the later processing process, especially in grinding, and even cause damage to the workpiece. Utility Model Content

[0004] In order to solve the above-mentioned various problems, the utility model provides a hydro-generator rotor shaft machining fixture.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a hydro-turbine generator rotor shaft processing fixture, including a rectangular frame, a mounting frame is fixedly provided at the bottom of the rectangular frame, and fixing fixtures are threadedly connected on the four side walls inside the rectangular frame. Circular positioning rings are fixedly provided at both the front and rear ends of the rectangular frame, and the center of the circular positioning ring coincides with the geometric center of the rectangular frame. The fixing fixture includes an adjusting screw threadedly connected to the center of the side wall of the rectangular frame, and one end of the adjusting screw extending into the interior of the rectangular frame is rotatably connected to an arc-shaped clamp, and a guide rod is fixedly provided on the outer side of the arc-shaped clamp, and the guide rod passes through the rectangular frame and is slidably connected to the rectangular frame.

[0006] Furthermore, support rods are fixedly provided at four corners of the front and rear end surfaces of the rectangular frame, and the circular positioning ring is fixedly provided between the other ends of the four support rods.

[0007] Furthermore, a plurality of mounting holes are fixedly provided on the mounting frame.

[0008] Furthermore, the arc-shaped clamping plate is a rectangular parallelepiped structure, and the side surface thereof in contact with the rotor shaft is an arc surface.

[0009] Compared with the prior art, the utility model has the following advantages: circular positioning rings are designed at the front and rear ends of the rectangular frame, the rotor shaft passes through the two circular positioning rings, the diameter of the circular positioning rings is slightly larger than the diameter of the rotor shaft, and then the rotor shaft is fixed by four arc-shaped clamping plates, so that the rotor shaft can be fixed at the geometric center of the rectangular frame, which provides convenience for subsequent processing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional structural diagram of a hydro-generator rotor shaft processing fixture of the utility model. Figure 1 .

[0011] Figure 2 This is a three-dimensional structural diagram of a hydro-generator rotor shaft processing fixture of the utility model. Figure 2 .

[0012] Figure 3 The utility model is a schematic diagram of the main structure of a hydro-generator rotor shaft processing fixture.

[0013] Figure 4 The utility model is a left-side structural schematic diagram of a hydro-generator rotor shaft processing fixture.

[0014] Figure 5 The utility model is a schematic diagram of the internal structure of a hydro-generator rotor shaft processing fixture.

[0015] As shown in the figure: 1. Rectangular frame; 2. Mounting frame; 3. Circular positioning ring; 4. Adjusting screw; 5. Arc clamp; 6. Guide rod; 7. Support rod; 8. Mounting hole. DETAILED DESCRIPTION

[0016] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation. Therefore, they cannot be understood as limitations on the present invention.

[0017] In the description of the present invention, unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Combined with Figure 1 To Attachment Figure 5 A hydro-turbine generator rotor shaft processing fixture comprises a rectangular frame 1, a mounting frame 2 is fixedly provided at the bottom of the rectangular frame 1, and fixing fixtures are threadedly connected on the four side walls inside the rectangular frame 1. Circular positioning rings 3 are fixedly provided at both the front and rear ends of the rectangular frame 1, and the center of the circular positioning ring 3 coincides with the geometric center of the rectangular frame 1. The fixing fixture comprises an adjusting screw 4 threadedly connected to the center of the side wall of the rectangular frame 1, and one end of the adjusting screw 4 extending into the interior of the rectangular frame 1 is rotatably connected with an arc clamping plate 5, and a guide rod 6 is fixedly provided on the outer side of the arc clamping plate 5, and the guide rod 6 passes through the rectangular frame 1 and is slidably connected to the rectangular frame 1.

[0020] Support rods 7 are fixedly provided at the four corners of the front and rear end surfaces of the rectangular frame 1, and the circular positioning ring 3 is fixedly provided between the other ends of the four support rods 7. A plurality of mounting holes 8 are fixedly provided on the mounting frame 2. The arc-shaped clamping plate 5 is a rectangular parallelepiped structure, and its side surface in contact with the rotor shaft is an arc surface.

[0021] Specific implementation method of the utility model: Before use, the rotor shaft is passed through two circular positioning rings 3, and then four adjusting screws 4 are tightened in sequence, so that the arc-shaped clamping plate 5 clamps the rotor shaft from all sides to fix it. In this state, the axis of the rotor shaft coincides with the geometric center of the rectangular frame 1, and then the fixture is fixedly installed on the machine tool to start the processing operation. The machine tool tool or drill hole generally corresponds to the geometric center of the fixture, so only a slight calibration is required, which largely avoids damage to the workpiece caused by eccentric clamping.

[0022] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A hydro-generator rotor shaft machining fixture, comprising a rectangular frame (1), a mounting frame (2) fixedly provided at the bottom of the rectangular frame (1), and fixing fixtures threadedly connected on four side walls inside the rectangular frame (1), characterized in that: The rectangular frame (1) is fixedly provided with circular positioning rings (3) at both the front and rear ends, the center of the circular positioning ring (3) coincides with the geometric center of the rectangular frame (1), the fixing fixture comprises an adjusting screw (4) threadedly connected to the center of the side wall of the rectangular frame (1), one end of the adjusting screw (4) extending into the interior of the rectangular frame (1) is rotatably connected to an arc-shaped clamping plate (5), the outer side surface of the arc-shaped clamping plate (5) is fixedly provided with a guide rod (6), and the guide rod (6) passes through the rectangular frame (1) and is slidably connected to the rectangular frame (1).

2. A hydro-generator rotor shaft machining fixture according to claim 1, characterized in that: Support rods (7) are fixedly provided at the four corners of the front and rear end surfaces of the rectangular frame (1), and the circular positioning ring (3) is fixedly provided between the other ends of the four support rods (7).

3. A hydro-generator rotor shaft machining fixture according to claim 1, characterized in that: The mounting frame (2) is fixedly provided with a plurality of mounting holes (8).

4. A hydro-generator rotor shaft machining fixture according to claim 1, characterized in that: The arc-shaped clamping plate (5) is a rectangular parallelepiped structure, and the side surface thereof in contact with the rotor shaft is an arc surface.

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