Tool for machining end face teeth of turbine wheel disc of gas turbine

Abstract

The utility model provides a gas turbine wheel disc end face tooth machining tool which comprises a tool base, a heightening structure is arranged on the outer wall of the tool base, positioning copper columns are arranged on the two sides of the top of the tool base, a gas turbine wheel disc is arranged between the two positioning copper columns, fixing bolts are arranged on the tops of the positioning copper columns, and the gas turbine wheel disc is arranged between the positioning copper columns. And the fixing bolt is in threaded connection with the positioning copper column. The tool is reasonable in design, the positioning copper columns are manufactured through the pull rod locking holes in the circumferential direction of the gas wheel disc, when a part is placed downwards, the part firstly makes contact with the outer circles of the positioning copper columns for primary positioning, when the bottom face slowly makes contact with the tool face, direct positioning is conducted through the supporting blocks, and the positioning error of the supporting blocks and the gas wheel disc can be controlled to range from 0.1 mm to 0.15 mm; alignment time is greatly shortened, then the gas wheel disc is fixed through the locking pressing plate and the locking nut, and then the fixing bolt is installed on the positioning copper column to be connected so that the gas wheel disc can be fixed.

Description

Technical Field

[0001] The utility model mainly relates to the field of gas turbines, and in particular to a tool for machining end face teeth of a turbine wheel disc of a gas turbine. Background Art

[0002] A gas turbine is an internal combustion power machine that uses a continuously flowing gas as a working medium to drive the impeller to rotate at high speed, converting the energy of the fuel into useful work. It is a rotating impeller heat engine.

[0003] The rotor blades are composed of many guide vanes and runner blades. These blades are arranged on the rotor, forming a tower-shaped or disc-shaped hub in the middle. The appearance of the entire device looks like a "turbine" composed of many transparent blades, so it is called a turbine.

[0004] During the operation of the specific embodiment, the inventors found the following defects:

[0005] At present, the diameter of the gas turbine wheel is relatively large. When processing the end face teeth of the heavy-duty gas turbine wheel, there is no direct tooling to quickly clamp and position it, making it difficult to align and time-consuming.

[0006] It should be noted that the above content belongs to the technical knowledge scope of the inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a tool for machining the end face gear of a turbine wheel disc of a gas turbine, which is used to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above-mentioned object, the present invention provides a technical solution as follows: a tool for machining the end face gear of a turbine wheel disc of a gas turbine, comprising a tool base, an outer wall of the tool base being provided with a cushioning structure, positioning copper pillars being provided on both sides of the top of the tool base, a gas turbine disc being provided between the two positioning copper pillars, fixing bolts being provided on the tops of the positioning copper pillars, the fixing bolts being threadedly connected to the positioning copper pillars, the bottom of the gas turbine disc being fitted with the top of the cushioning structure, a positioning groove being provided on the top of the tool base, the positioning groove being connected to the positioning copper pillars;

[0011] Place the gas turbine disc between the two positioning copper columns, then install fixing bolts on the outer wall of the gas turbine disc with the bottom of the fixing bolts fitting against the top of the gas turbine disc, and fix the gas turbine disc between the pad structure and the fixing bolts.

[0012] Furthermore, a first mounting groove is provided in the middle of the tooling base, a second mounting groove is provided at the top and bottom of the first mounting groove, a locking pressure plate is provided inside the second mounting groove, and the locking pressure plate is connected to the second mounting groove through a locking nut.

[0013] Furthermore, a bolt slot is provided on the top of the tooling base, a mounting shell is provided on the inner wall of the bolt slot, the mounting shell is threadedly connected to the bolt slot, and a support block is provided on the top of the mounting shell.

[0014] Furthermore, a first slot is provided on the top of the tooling base, and a padding structure is provided on the inner wall of the first slot.

[0015] Furthermore, the raising structure includes a raising block, a second slot is provided inside the raising block, an insertion shaft is provided on the inner wall of the second slot, and one end of the insertion shaft is connected to the first slot.

[0016] Furthermore, the number of the raising structures is set to be multiple, and the multiple raising structures are arranged in a circular array on the top of the tooling base.

[0017] 3.Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0019] The utility model makes use of the circumferential pull rod locking holes of the gas turbine disc to make positioning copper columns. When the part is lowered, it first contacts the outer circle of the positioning copper column for preliminary positioning. When the bottom surface slowly contacts the tooling surface, it is directly positioned through the support block. The positioning error between the support block and the gas turbine disc can be controlled between 0.1 and 0.15 mm, which greatly reduces the alignment time. It is then fixed with a locking pressure plate and a locking nut, and then the fixing bolts are installed on the positioning copper column for connection to fix the gas turbine disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the tooling base of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the tooling base of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional unfolded structure of the cushion structure of the present utility model.

[0024] Reference numerals:

[0025] 1. Tooling base; 2. First mounting slot; 3. Second mounting slot; 4. Bolt slot; 5. First slot; 6. Positioning slot; 7. Locking plate; 8. Locking nut; 9. Mounting shell; 10. Support block; 11. Positioning copper column; 12. Heightening structure; 1201. Heightening block; 1202. Second slot; 1203. Insert shaft; 13. Gas turbine disc; 14. Fixing bolt. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0029] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," "provided with," "provided on," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0030] Refer to the attached Figure 1-4A tool for machining end face gears of a gas turbine wheel disc comprises a tool base 1, the outer wall of the tool base 1 being provided with a cushioning structure 12, positioning copper pillars 11 being provided on both sides of the top of the tool base 1, a gas wheel disc 13 being provided between the two positioning copper pillars 11, fixing bolts 14 being provided on the tops of the positioning copper pillars 11, the fixing bolts 14 being threadedly connected to the positioning copper pillars 11, the bottom of the gas wheel disc 13 being in contact with the top of the cushioning structure 12, a positioning groove 6 being provided on the top of the tool base 1, the positioning groove 6 being connected to the positioning copper pillars 11;

[0031] Place the gas turbine disc 13 between the two positioning copper columns 11, then install the fixing bolts 14 on the outer wall of the gas turbine disc 13 with the bottom of the fixing bolts 14 fitting with the top of the gas turbine disc 13, and fix the gas turbine disc 13 between the padding structure 12 and the fixing bolts 14.

[0032] Furthermore, a first mounting groove 2 is provided in the middle of the tooling base 1, and second mounting grooves 3 are provided at the top and bottom of the first mounting groove 2. A locking pressure plate 7 is provided inside the second mounting groove 3, and the locking pressure plate 7 is connected to the second mounting groove 3 through a locking nut 8. The provided locking pressure plate 7 is used to position the gas turbine disc 13, and the locking pressure plate 7 is located directly below the gas turbine disc 13.

[0033] Furthermore, a bolt slot 4 is provided on the top of the tooling base 1, and a mounting shell 9 is provided on the inner wall of the bolt slot 4. The mounting shell 9 is threadedly connected to the bolt slot 4, and a support block 10 is provided on the top of the mounting shell 9. After the gas turbine disc 13 is placed, the bottom of the gas turbine disc 13 is fitted with the top of the support block 10, which is used to control the position of the gas turbine disc 13 and facilitate the fixation of the gas turbine disc 13.

[0034] Furthermore, a first slot 5 is provided on the top of the tooling base 1, and a padding structure 12 is provided on the inner wall of the first slot 5. The padding structure 12 includes a padding block 1201, a second slot 1202 is provided inside the padding block 1201, and an insert shaft 1203 is provided on the inner wall of the second slot 1202. One end of the insert shaft 1203 is connected to the first slot 5. The number of the padding structures 12 is set to multiple, and multiple padding structures 12 are arranged in a ring array on the top of the tooling base 1, so that the rod locking hole inside the gas turbine disc 13 is aligned with the outer wall of the positioning copper column 11. The bottom of the gas turbine disc 13 is fitted with the top of the raising block 1201. The raising block 1201 can be added according to the height of the gas turbine disc 13. The plug shaft 1203 is inserted into the second slot 1202 inside the raising block 1201 in the vertical direction. One end of the plug shaft 1203 is inserted into the first slot 5 to fix the raising block 1201. Then, the outer ring of the gas turbine disc 13 is fitted with the top of the raising block 1201, thereby providing multi-directional support for the gas turbine disc 13. Then, the fixing bolts 14 are installed on the outer wall of the positioning copper column 11 to fix the position of the gas turbine disc 13.

[0035] The above-mentioned embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A tool for machining the end face gear of a gas turbine wheel disc, characterized by: include A tooling base (1), wherein the outer wall of the tooling base (1) is provided with a padding structure (12), positioning copper columns (11) are provided on both sides of the top of the tooling base (1), a gas turbine disc (13) is provided between the two positioning copper columns (11), a fixing bolt (14) is provided on the top of the positioning copper column (11), the fixing bolt (14) is threadedly connected to the positioning copper column (11), the bottom of the gas turbine disc (13) is fitted with the top of the padding structure (12), and a positioning groove (6) is provided on the top of the tooling base (1), and the positioning groove (6) is connected to the positioning copper column (11); The gas turbine disc (13) is placed between the two positioning copper columns (11), and then a fixing bolt (14) is installed on the outer wall of the gas turbine disc (13) with the bottom of the fixing bolt (14) fitting with the top of the gas turbine disc (13), and the gas turbine disc (13) is fixed between the pad structure (12) and the fixing bolt (14).

2. The tool for machining the end face gear of a gas turbine wheel disc according to claim 1, characterized in that: A first mounting groove (2) is provided in the middle of the tooling base (1), second mounting grooves (3) are provided at the top and bottom of the first mounting groove (2), a locking pressure plate (7) is provided inside the second mounting groove (3), and the locking pressure plate (7) is connected to the second mounting groove (3) via a locking nut (8).

3. The tool for machining end face gear of a gas turbine wheel disc according to claim 1, characterized in that: A bolt slot (4) is provided on the top of the tooling base (1), a mounting shell (9) is provided on the inner wall of the bolt slot (4), the mounting shell (9) is threadedly connected to the bolt slot (4), and a support block (10) is provided on the top of the mounting shell (9).

4. The tool for machining end face gear of a gas turbine wheel disc according to claim 1, characterized in that: A first slot (5) is provided on the top of the tooling base (1), and a padding structure (12) is provided on the inner wall of the first slot (5).

5. The tool for machining the end face gear of a gas turbine wheel disc according to claim 1, characterized in that: The raising structure (12) comprises a raising block (1201), a second slot (1202) is provided inside the raising block (1201), an inserting shaft (1203) is provided on the inner wall of the second slot (1202), and one end of the inserting shaft (1203) is connected to the first slot (5).

6. The tool for machining the end face gear of a gas turbine wheel disc according to claim 1, characterized in that: The number of the raising structures (12) is set to be multiple, and the multiple raising structures (12) are arranged in a circular array on the top of the tooling base (1).

Images