Clamping device for linear cutting of dovetail groove of outer ring of gas turbine

Abstract

The utility model aims to provide a gas turbine outer ring dovetail groove linear cutting clamping device, which belongs to the field of mechanical clamping and comprises a positioning tray, a center positioning support column arranged at the circle center position of the positioning tray, and a diameter adjusting nut arranged at the lower part of the positioning tray and used for adjusting the diameter of the positioning tray. The outer contour of the positioning tray is enlarged or shrunk along with rotation of the diameter adjusting nut, the bottom of the positioning tray is installed on a base, and a base adjusting device for adjusting the height and angle of the base is arranged on the base. The angle cutting device can assist in clamping, so that the angle cutting function is achieved when the wire cutting machine head is kept in a vertical state, machining is effectively completed, and the required precision of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to a cutting auxiliary device, in particular to a cutting clamping device. Background Art

[0002] The outer ring dovetail groove is used to lock the blades of the stationary blade ring, control the blade angles on the inlet and outlet sides, ensure that the overall combustion heat energy of the gas turbine moves in the specified direction, and control the rotation speed of the turbine blades.

[0003] The dovetail groove is larger on the air inlet side and smaller on the air outlet side, and is evenly distributed in the circumferential direction on the inner diameter of the outer ring. During wire cutting processing, the wire cutting head moves up and down when performing angle processing, making it impossible to perform high-dimensional processing. Summary of the Invention

[0004] The purpose of the utility model is to provide a gas turbine outer ring dovetail groove wire cutting clamping device that can meet the needs of the outer ring dovetail groove of the stationary blade ring through wire cutting, realize clamping positioning, angular positioning, facilitate loading and unloading, and ensure product accuracy.

[0005] The purpose of this utility model is achieved in this way:

[0006] The utility model discloses a gas turbine outer ring dovetail groove wire cutting clamping device, which is characterized by comprising a positioning tray, a central positioning pillar is arranged at the center position of the positioning tray, a diameter adjustment nut for adjusting the diameter of the positioning tray is arranged at the lower part of the positioning tray, the outer contour of the positioning tray is enlarged or tightened as the diameter adjustment nut rotates, the bottom of the positioning tray is installed on the base, and the base is provided with a base adjustment device for adjusting the base height and angle.

[0007] The utility model may also include:

[0008] 1. The positioning tray includes a first chassis and a second chassis. The diameter of the second chassis is larger than that of the first chassis. 80 positioning pin holes are set on the first chassis, and 36 positioning pin holes are set on the second chassis.

[0009] The advantage of the present invention is that the present invention can assist in clamping, thereby achieving the function of performing angle cutting while the online cutting machine head remains in an upright state, effectively completing processing and ensuring the required accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Fig. 1 This is the assembly drawing of the utility model;

[0011] Fig. 2 A schematic diagram of the positioning tray. DETAILED DESCRIPTION

[0012] The present invention is described in more detail below with reference to the accompanying drawings:

[0013] Combine Figs. 1-2 The utility model is a device for clamping and aligning the outer ring of a gas turbine stator blade ring during dovetail groove wire cutting processing, controlling the tilt angle, circumferential angle division and diameter positioning, comprising a center positioning support 1, a base 2, a positioning tray 3, a diameter adjustment nut 4, a base adjustment device 5, etc.

[0014] The product is mounted on the positioning tray 3. The outer contour of the positioning tray 3 can be adjusted with the center positioning pillar 1 to achieve coaxial centering and diameter adjustment. By adjusting the diameter adjustment nut 4, the diameter of the positioning tray 3 is aligned with the actual diameter of the product. After the product is fixed, the tray 3 is mounted on the base 2 and locked. The height and angle are adjusted using the base adjustment device 5 to achieve the cutting angle shown in the drawing and then fixed. The entire clamping device is placed in the wire cutting machine tool. The center positioning pillar 1 is aligned to complete the pre-cutting preparations.

[0015] The positioning tray 3 consists of a first chassis and a second chassis. During the actual cutting process, 80 positioning pin holes on the first chassis and 36 positioning pin holes on the second chassis enable multi-angle positioning, meeting the requirements of wire cutting at different angles for each level of outer ring. This allows a single fixture to complete wire cutting of all dovetail grooves on the outer rings of the gas turbine, while also enabling rapid assembly and improving overall production efficiency.

Claims

1. A gas turbine outer ring dovetail groove wire cutting clamping device, characterized by: It includes a positioning tray, a central positioning pillar is set at the center position of the positioning tray, a diameter adjustment nut is set at the bottom of the positioning tray to adjust its diameter, the outer contour of the positioning tray is enlarged or tightened as the diameter adjustment nut rotates, the bottom of the positioning tray is installed on the base, and a base adjustment device for adjusting the base height and angle is set on the base.

2. The gas turbine outer ring dovetail groove wire cutting clamping device according to claim 1, characterized in that: The positioning tray includes a first chassis and a second chassis. The diameter of the second chassis is larger than that of the first chassis. 80 positioning pin holes are provided on the first chassis, and 36 positioning pin holes are provided on the second chassis.

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