Auxiliary tool for machining guide bearing bush key of hydropower station unit

Abstract

The utility model provides a hydropower station unit guide bearing tile key machining auxiliary tool which comprises a main body, a first installation part is arranged on the main body and comprises a first installation groove used for being matched with a lower guide tile key body, and a transverse groove used for installing the back of the lower guide tile key and protruding transversely is formed in the bottom of the first installation groove. A first pressing plate is mounted on the side part of the first mounting part through a first bolt, and the transverse groove penetrates through the main body; the first mounting part is matched with the first pressing plate to quickly clamp the lower guide shoe key on the main body, good and quick mounting and fixing are achieved, the whole main body is connected with a fourth shaft rotary table of a machining center, the front face of the lower guide shoe key can be machined through the machining center, and after the front face is machined, the fourth shaft rotary table of the machining center is controlled to rotate by 180 degrees, so that the front face of the lower guide shoe key is machined. In the machining process, only one-time clamping is needed, the machining precision is guaranteed, and meanwhile the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the processing of guide bearing keys for hydropower station units, and particularly relates to an auxiliary tooling for processing guide bearing keys for hydropower station units. Background Technique

[0002] The guide bearing of a certain hydropower station unit is supported by a key, which ensures the stability and functionality of the guide bearing. This support method mainly depends on the structural characteristics of the key and its interaction with the guide bearing. As a support element, the key has a specific shape and size and can be closely fitted at the support position of the guide bearing. This close fit not only ensures the positioning accuracy of the guide bearing but also avoids possible shaking or displacement during operation.

[0003] During the A-class maintenance of the unit, it is necessary to redistribute the clearance between the guide bearing and the main shaft, which needs to be achieved by processing keys with different thicknesses. In the industry, the requirements for the clearance of the guide bearing of hydropower station units are very strict. Correspondingly, the processing accuracy requirements for the keys also reach 0.01 mm.

[0004] At present, due to the lack of special auxiliary devices, the fixing device used for key processing has a poor fixing effect on the key. If it is not effectively fixed, it will cause errors in the processed products. This brings great trouble to the key assembly work at the maintenance site. In the actual installation process, it is often necessary to repeatedly grind and adjust the key by manual grinding, which increases the labor intensity and wastes the maintenance period. Content of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary tooling for processing guide bearing keys for hydropower station units, which can quickly install the key on the main body and can quickly complete the mechanical processing of the key in cooperation with the machining center, ensuring the processing accuracy and improving the processing efficiency. In order to achieve the above technical features, the purpose of the utility model is realized as follows:

[0006] An auxiliary tooling for processing guide bearing keys for hydropower station units includes a main body. A first installation part is arranged on the main body. The first installation part includes a first installation groove for cooperating with the body of the lower guide key. A transverse groove for installing the transverse protrusion on the back of the lower guide key is arranged at the bottom of the first installation groove. A first pressing plate is installed on the side part of the first installation part through a first bolt. The transverse groove penetrates through the main body.

[0007] A notch is opened at the end of the first installation part. A second bolt is sleeved in the notch. The end of the bolt is threadedly connected with the end of the lower guide key.

[0008] A second mounting portion is also provided on the main body. The first mounting portion includes a second mounting groove for cooperating with the body of the upper guide key. A vertical groove for mounting the back vertical protrusion of the upper guide key is provided at the bottom of the second mounting groove. A second pressing plate is mounted on the side of the second mounting portion through a third bolt, and the vertical groove penetrates through the main body.

[0009] The second mounting groove is provided at the bottom of the groove.

[0010] Compression springs are provided between the main body and the first pressing plate, and between the main body and the second pressing plate. The compression springs are respectively sleeved outside the first bolt and the third bolt.

[0011] Flanges are mounted on both sides of the main body.

[0012] The utility model has the following beneficial effects:

[0013] 1. The key is mounted on the main body by a one-time clamping method, and the mechanical processing of the key can be quickly completed with the cooperation of a machining center, ensuring the machining accuracy and improving the machining efficiency.

[0014] 2. The device can adapt to various different key shapes, has strong versatility, and has the value of popularization. Description of the Drawings

[0015] The following further describes the utility model in conjunction with the drawings and embodiments.

[0016] Figure 1 is a structural diagram of an auxiliary tooling for machining the guide bearing key of a hydropower station unit provided by an embodiment of the utility model;

[0017] Figure 2 is a structural schematic diagram of the lower guide key involved in an embodiment of the utility model;

[0018] Figure 3 is a structural schematic diagram of the upper guide key provided by an embodiment of the utility model;

[0019] Figure 4 is an installation structural schematic diagram of the upper guide key and the lower guide key provided by an embodiment of the utility model;

[0020] Figure 5 is a front structural schematic diagram when an auxiliary tooling for machining the guide bearing key of a hydropower station unit provided by an embodiment of the utility model is connected to the fourth-axis turntable of a machining center;

[0021] Figure 6 is a back structural schematic diagram when an auxiliary tooling for machining the guide bearing key of a hydropower station unit provided by an embodiment of the utility model is connected to the fourth-axis turntable of a machining center;

[0022] Figure 7 A schematic diagram of the installation structure of a guide bearing key processing auxiliary tooling for a hydropower station unit provided by an embodiment of the utility model in a processing center;

[0023] In the figure: main body 1, first mounting part 1a, first mounting groove 1a1, transverse groove 1a2, notch 1b, second mounting part 1c, second mounting groove 1c1, vertical groove 1c2, groove 1d, lower guide washer key 2, body 2a of lower guide washer key, transverse protrusion 2b, first bolt 3, first pressure plate 4, second bolt 5, upper guide washer key 6, body 6a of upper guide washer key, vertical protrusion 6b, third bolt 7, second pressure plate 8, flange 9, fourth axis turntable 10 of machining center. DETAILED DESCRIPTION

[0024] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0025] In order to realize the above technical features, the purpose of the utility model is achieved as follows:

[0026] See attached Figures 1-7 , a processing auxiliary tooling for a guide bearing key of a hydropower station unit, comprising a main body 1, wherein the main body 1 is provided with a first mounting portion 1a, the first mounting portion 1a comprising a first mounting groove 1a1 for cooperating with a main body 2a of a lower guide bearing key 2, a bottom of the first mounting groove 1a1 is provided with a transverse groove 1a2 for installing a transverse protrusion 2b on the back of the lower guide bearing key 2, a first pressing plate 4 is installed on the side of the first mounting portion 1a through a first bolt 3, and the transverse groove 1a2 runs through the main body 1; the lower guide bearing key 2 can be quickly clamped on the main body 1 through the first mounting portion 1a and the first pressing plate 4, thereby achieving good and rapid installation and fixation, and the main body 1 is connected as a whole to the fourth axis turntable 10 of the machining center, so that the front side of the lower guide bearing key 2 can be processed by the machining center, and after the front side is processed, the fourth axis turntable 10 of the machining center is controlled to rotate 180°, and then the transverse protrusion 2b on the back of the lower guide bearing key 2 is processed, and the processing process only requires one clamping, thereby ensuring the processing accuracy and also improving the processing efficiency.

[0027] Furthermore, a notch 1b is provided at the end of the first mounting portion 1a, and a second bolt 5 is inserted into the notch 1b, and the end of the bolt 5 is threadedly connected to the end of the lower guide washer key 2. Since the lower guide washer key 2 is heavy, it is not convenient to directly install it into the first mounting portion 1a or remove it from the first mounting portion 1a by hand. By setting the second bolt 5, a new fulcrum point is added when the lower guide washer key is removed and installed, which facilitates lifting and disassembly.

[0028] Further, a second mounting portion 1c is also provided on the main body 1. The second mounting portion 1c includes a second mounting groove 1c1 for cooperating with the main body 6a of the upper guide key 6. A vertical groove 1c2 for mounting the back vertical protrusion 6b of the upper guide key 6 is provided at the bottom of the second mounting groove 1c1. A second pressing plate 8 is mounted on the side of the second mounting portion 1c through a third bolt 7. The vertical groove 1c2 penetrates through the main body 1. The upper guide key 6 can be quickly clamped on the main body 1 through the cooperation of the second mounting portion 1c and the second pressing plate 8, achieving good and rapid installation and fixation. Connecting the whole main body 1 to the fourth-axis turntable 10 of the machining center, the front surface of the upper guide key 6 can be machined by the machining center. After the front surface machining is completed, the fourth-axis turntable 10 of the machining center is controlled to rotate 180°, and then the back vertical protrusion 6b of the upper guide key 6 is machined. The machining process only requires one clamping, ensuring the machining accuracy and improving the machining efficiency at the same time.

[0029] Further, the second mounting groove 1c1 is provided at the bottom of the groove 1d, so that the second pressing plate 8 and the first pressing plate 4 are not in the same working plane, which is more convenient for installation and disassembly.

[0030] Further, compression springs are provided between the main body 1 and the first pressing plate 4, and between the main body 1 and the second pressing plate 8. The compression springs are respectively sleeved outside the first bolt 3 and the third bolt 7. Through the arrangement of the compression springs, it can effectively prevent the pressing plates from freely rotating when in a loose state.

[0031] Further, flanges 9 are installed on both sides of the main body 1, so that the main body 1 can be quickly connected to the fourth-axis turntable 10 of the machining center through the flanges.

Claims

1. An auxiliary tooling for processing guide bearing keys of a hydropower station unit, characterized in that: It includes a main body (1), on which a first mounting portion (1a) is provided. The first mounting portion (1a) includes a first mounting groove (1a1) for cooperating with the body (2a) of the lower guide key (2). A transverse groove (1a2) for mounting the back transverse protrusion (2b) of the lower guide key (2) is provided at the bottom of the first mounting groove (1a1). A first pressing plate (4) is mounted on the side of the first mounting portion (1a) through a first bolt (3), and the transverse groove (1a2) penetrates through the main body (1).

2. The auxiliary tooling for machining the guide bearing key of a hydropower unit according to claim 1, wherein: A notch (1b) is formed at the end of the first mounting portion (1a), and a second bolt (5) is sleeved in the notch (1b). The end of the bolt (5) is threadedly connected to the end of the lower guide key (2).

3. An auxiliary tooling for machining the guide bearing key of a hydropower unit according to claim 2, characterized in that: A second mounting portion (1c) is further provided on the main body (1). The second mounting portion (1c) includes a second mounting groove (1c1) for cooperating with the body (6a) of the upper guide key (6). A vertical groove (1c2) for mounting the back vertical protrusion (6b) of the upper guide key (6) is provided at the bottom of the second mounting groove (1c1). A second pressing plate (8) is mounted on the side of the second mounting portion (1c) through a third bolt (7), and the vertical groove (1c2) penetrates through the main body (1).

4. An auxiliary tooling for machining the guide bearing key of a hydropower unit according to claim 3, characterized in that: The second mounting groove (1c1) is arranged at the bottom of the groove (1d).

5. An auxiliary tooling for machining the guide bearing key of a hydropower unit according to claim 4, characterized in that: Compression springs are provided between the main body (1) and the first pressing plate (4), and between the main body (1) and the second pressing plate (8). The compression springs are respectively sleeved outside the first bolt (3) and the third bolt (7).

6. An auxiliary tooling for machining the guide bearing key of a hydropower unit according to claim 5, characterized in that: Flanges (9) are mounted on both sides of the main body (1), and the main body (1) is connected to the fourth-axis turntable (10) of the machining center through the flanges (9).

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