Compression impeller runner repairing tool for milling machine tool

Abstract

The utility model discloses a tool for repairing a compressor impeller runner of a milling machine tool, which shortens the original grinding time and improves the production efficiency. Comprising a positioning body and hexagonal compression screws, the positioning body is annular, a plurality of sunk screw holes are evenly formed in the edge of the positioning body in the circumferential direction, and the sunk screw holes are fixed to a workbench of a milling machine tool through inner hexagonal screws; an annular table is arranged on the upper surface of the positioning body around an inner hole of the positioning body, end teeth are arranged on the annular table, and the end teeth on the air compression impeller and the end teeth on the positioning body are positioned in a meshed mode. An inner hole of the positioning body is a threaded hole, the hexagonal compression screw is provided with a screw rod section, a polished rod section and a nut, the screw rod section of the hexagonal compression screw is in threaded fit in the inner hole of the positioning body, the air compression impeller is sleeved on the polished rod section of the hexagonal compression screw in a clearance fit manner, and the nut of the hexagonal compression screw compresses and fixes the air compression impeller.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor impellers, in particular to a repair air passage tooling for a compressor impeller used in a milling machine tool. Background Art

[0002] In the general environment of energy conservation and environmental protection, the application field of steam compression technology is becoming more and more extensive. As the heart of the whole system, the normal operation of the steam compressor is particularly important. Therefore, the service life of the equipment determines the normal operation of the whole system. As the main component of the steam compressor, it is crucial to improve the service life of the compressor impeller, especially the balance of the compressor impeller during high-speed operation. If the unbalance amount in a certain direction is too large during high-speed operation of the compressor impeller, it will cause severe vibration during machine operation, damaging the main shaft, and in severe cases, the impeller will explode.

[0003] The working principle of steam compression is to use high-speed rotating blades to do work on air to increase air pressure. The compressor mainly consists of an air inlet passage, an impeller, a diffuser, an outlet volute, etc. The air inlet passage is axially arranged, and the flow passage is slightly tapered to reduce the air inlet resistance. The impeller is the core component of the compressor. The vane type or slit type diffuser enables the kinetic energy obtained by the gas in the impeller to be converted into pressure as much as possible. Among them, whether the compressor impeller can operate stably at high speed during work depends on the dynamic balance removal of the processed compressor impeller. Because the material of the compressor impeller is relatively hard, ordinary grinding is time-consuming, laborious and inefficient. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a repair air passage tooling for a compressor impeller used in a milling machine tool, which shortens the original grinding time and improves production efficiency.

[0005] The purpose of the utility model is achieved as follows:

[0006] A repair air passage tooling for a compressor impeller used in a milling machine tool,

[0007] including a positioning body and hexagon head pressing screws. The positioning body is annular. A plurality of countersunk screw holes are uniformly arranged along the circumferential direction at the edge part of the positioning body. The countersunk screw holes are fixed on the workbench of the milling machine tool through internal hexagon screws;

[0008] A ring platform is arranged on the upper surface of the positioning body around the inner hole of the positioning body. End teeth are arranged on the ring platform. The end teeth on the compressor impeller are meshed and positioned with the end teeth on the positioning body;

[0009] The inner hole of the positioning body is a threaded hole. The hexagon head pressing screw has a screw rod section, a smooth rod section and a nut. The screw rod section of the hexagon head pressing screw is in threaded fit with the inner hole of the positioning body. The compressor impeller is sleeved on the smooth rod section of the hexagon head pressing screw with a clearance fit. The nut of the hexagon head pressing screw presses and fixes the compressor impeller.

[0010] A cavity is formed between the ring platform and the screw end of the hexagonal compression screw. There is a gap between the end teeth on the gas compression impeller and the end teeth on the positioning body, and the cavity communicates with this gap.

[0011] The inner side of the tooth top of the end teeth on the upper part of the positioning body slopes downward, and the outer side of the tooth bottom of the end teeth on the upper part of the positioning body slopes downward.

[0012] Dynamic balance marks are provided on the circumferential wall of the positioning body, and the dynamic balance marks correspond to the flow channels of the gas compression impeller to be deweighted.

[0013] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0014] The utility model designs a set of tooling for milling and deweighting the flow channels of a gas compression impeller according to the overall shape of the processed gas compression impeller. This tooling can firmly fix the gas compression impeller with unqualified dynamic balance on the milling machine tool. Through the deweighting positions of the dynamic balance marks, the program is used to quickly mill and deweight the flow channels, shortening the original grinding time and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the gas compression impeller;

[0016] Figure 2 It is a schematic structural diagram of the utility model;

[0017] Figure 3 It is a schematic working diagram of the utility model;

[0018] Figure 4 It is a schematic structural diagram of the positioning body;

[0019] Figure 5 It is a schematic structural diagram of the compression bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] A tooling for repairing the flow channels of a gas compression impeller used on a milling machine tool includes a positioning body 1 and a hexagonal compression screw 2. The positioning body 1 is annular, and a plurality of countersunk screw holes are uniformly arranged along the circumferential direction on the edge part of the positioning body 1. The countersunk screw holes are fixed on the working table of the milling machine tool through hexagon socket head cap screws; a ring platform is provided on the upper surface of the positioning body 1 around the inner hole of the positioning body 1, and end teeth are provided on the ring platform. The end teeth on the gas compression impeller are engaged and positioned with the end teeth on the positioning body 1; the inner hole of the positioning body 1 is a threaded hole. The hexagonal compression screw 2 has a screw rod section, a smooth rod section, and a nut. The screw rod section of the hexagonal compression screw 2 is in threaded fit with the inner hole of the positioning body 1. The gas compression impeller 3 is sleeved on the smooth rod section of the hexagonal compression screw 2 with a clearance fit, and the nut of the hexagonal compression screw 2 presses and fixes the gas compression impeller 3.

[0021] A cavity is formed between the ring platform and the screw end of the hexagonal compression screw 2. There is a gap between the end teeth on the air compression impeller and the end teeth on the positioning body 1, and the cavity communicates with this gap. During the process of screwing the screw section of the hexagonal compression screw 2 into and out of the inner hole of the positioning body 1, air circulation is maintained to prevent the formation of negative pressure, which makes installation and disassembly difficult. In this embodiment, there is a gap between the tooth top of the end teeth on the air compression impeller and the tooth bottom of the end teeth on the positioning body 1.

[0022] The inner side of the tooth top of the end teeth on the upper end of the positioning body 1 slopes downward, and the outer side of the tooth bottom of the end teeth on the upper end of the positioning body 1 slopes downward. A conical structure is formed, which can automatically center and prevent misalignment when pressing the air compression impeller. The screw section of the hexagonal compression screw 2 can be directly screwed into the inner hole of the positioning body 1.

[0023] Dynamic balance marks are provided on the circumferential wall of the positioning body 1, and the dynamic balance marks correspond to the flow channels of the air compression impeller to be deburred.

[0024] The rework tooling for deburring the flow channels of the air compression impeller of the present utility model is as Figure 2 、 3 shown. When in use, it is assembled according to Figure 3 . First, the positioning body 1 is fixed on the machine tool workbench through the socket head cap screw, then the end teeth on the air compression impeller are engaged with the end teeth on the upper end of the positioning body 1, and finally the air compression impeller is axially locked using the hexagonal compression screw 2.

[0025] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present utility model.

Claims

1. A tool for repairing compressor impeller flow passages for milling machine tools, characterized in that: It comprises a positioning body (1) and a hexagonal clamping screw (2); the positioning body (1) is annular, and a plurality of countersunk screw holes are evenly arranged on the edge of the positioning body (1) along the circumferential direction; the countersunk screw holes are fixed to the workbench of the milling machine tool by means of hexagon socket screws; The upper surface of the positioning body (1) is provided with a ring platform around the inner hole of the positioning body (1), and the ring platform is provided with end teeth, and the end teeth on the compressor impeller mesh with the end teeth on the positioning body (1) for positioning; The inner hole of the positioning body (1) is a threaded hole, and the hexagonal clamping screw (2) comprises a screw rod section, a polished rod section, and a nut. The screw rod section of the hexagonal clamping screw (2) is threadedly engaged in the inner hole of the positioning body (1), and the compressor impeller (3) is sleeved on the polished rod section of the hexagonal clamping screw (2) with clearance engagement, and the nut of the hexagonal clamping screw (2) clamps and fixes the compressor impeller (3).

2. The tooling for repairing compressor impeller flow passages of a milling machine tool according to claim 1, characterized in that: A cavity is formed between the ring platform and the screw end of the hexagonal clamping screw (2), and a gap is provided between the end teeth on the compressor impeller and the end teeth on the positioning body (1), and the cavity is communicated with the gap.

3. The tooling for repairing compressor impeller flow passages of a milling machine tool according to claim 1, characterized in that: The inner side of the tooth top of the upper end tooth of the positioning body (1) is inclined downward, and the outer side of the tooth bottom of the upper end tooth of the positioning body (1) is inclined downward.

4. The tool for repairing compressor impeller flow passage for a milling machine tool according to claim 1, characterized in that: A dynamic balance mark is provided on the circumferential wall of the positioning body (1), and the dynamic balance mark corresponds to the flow channel of the compressor impeller to be deweighted.

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