Counter bore reverse scraping device for waveform joint coupler on steam turbine

Abstract

The utility model discloses a counter bore reverse scraping device for a waveform section coupler on a steam turbine, and belongs to the field of machinery and automation. The device comprises a reverse scraping knife rod, a knife head, a copper sleeve, a tool setting block and a screw, a square hole is formed in the position, close to the head, of one end of the reverse scraper rod, a screw hole is formed in one side of the square hole, the tool bit is installed in the square hole, and the screw is screwed into the screw hole to lock the tool bit. The copper sleeve is sleeved on the reverse scraper rod, the reverse scraper rod is fixed in a bolt hole of the waveform joint coupler through the copper sleeve, and the tool setting block is arranged on one side of the tool bit and is used for controlling the position of a tool nose of the tool bit, so that the feeding depth of the tool bit is corrected, and the diameter of a counter bore is controlled. The device is simple in structure, can be quickly clamped on the waveform coupler, is convenient for tool setting, can accurately finish reverse scraping counter bore machining in a time-saving and labor-saving manner, and greatly improves the machining efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of machinery and automation, and more specifically, to a device for anti-scraping countersinking of a wave coupling on a steam turbine. Background Technology

[0002] The corrugated joint coupling, also called a semi-flexible coupling, used to connect the generator rotor and the turbine rotor is a type of coupling commonly used in steam turbine generator sets. For example... Figure 7 As shown, the bolt holes on the coupling end face include countersunk holes, with the outer hole being smaller and the inner hole larger. Due to structural limitations, the larger inner hole can only be machined by back-scraping. Because of the limited space inside the hole, the installation of the cutting tool and the control of its dimensions are quite difficult during back-scraping.

[0003] Therefore, there is an urgent need for a device for anti-scraping and countersinking of wave couplings on steam turbines. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a device for counterscraping and countersinking of wave couplings on steam turbines. The device has a simple structure, can be quickly clamped on the wave coupling, facilitates tool setting, and can complete the counterscraping and countersinking machining in a timely, labor-saving and accurate manner, greatly improving machining efficiency and quality.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A countersinking device for a wave-shaped coupling on a steam turbine includes a countersinking rod, a cutter head, a copper sleeve, a tool adjusting block, and screws. One end of the countersinking rod has a square hole near its head, and a screw hole is provided on one side of the square hole. The cutter head is installed in the square hole, and the screw is screwed into the screw hole to lock the cutter head. The copper sleeve is fitted onto the countersinking rod, and the countersinking rod is fixed to the bolt hole of the wave-shaped coupling via the copper sleeve. The tool adjusting block is located on one side of the cutter head and is used to control the position of the cutter tip, thereby correcting the depth of cut and controlling the diameter of the countersink.

[0007] A further technical solution is that the cutting block includes a base with a through hole and a limiting block disposed on the base. The base is fitted onto the anti-scraper rod, and the limiting block is located on one side of the cutting head.

[0008] In a further technical solution, the limiting block is arc-shaped.

[0009] In a further technical solution, the copper sleeve is located in the middle of the anti-scraper rod. Beneficial effects

[0010] Compared with the prior art, the present invention has the following significant advantages:

[0011] 1. This utility model can be inserted into the bolt hole of the corrugated joint coupling. By quickly positioning the cutter head with the cutter block and correcting the cutter head's feed depth, it can save time and effort and accurately complete the back-scraping countersunk hole machining.

[0012] 2. This utility model has a simple structure and is easy to use. The tool loading and setting process is simple and convenient, and the processing efficiency is high. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 The three-dimensional representation of this utility model Figure 1 ;

[0015] Figure 3 The three-dimensional representation of this utility model Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the anti-scraper bar structure;

[0017] Figure 5 Schematic diagram of the tool block structure;

[0018] Figure 6 This is a schematic diagram of the cutter head structure;

[0019] Figure 7 This is a schematic diagram of the structure of the present invention installed on a waveform coupling.

[0020] The diagram is labeled as follows: 1. Back scraper bar; 2. Cutter head; 3. Copper sleeve; 4. Tool setting block; 5. Screw; 6. Wave coupling; 1-1. Square hole; 1-2. Screw hole; 4-1. Base; 4-2. Limiting block. Detailed Implementation

[0021] The present invention will now be described in detail with reference to embodiments and application examples. It should be noted that the embodiments described are preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. The application and usage of the present invention are not limited to the application examples described. Example

[0022] like Figure 1-6As shown, a countersinking device for a wave-shaped coupling on a steam turbine includes a countersinking rod 1, a cutter head 2, a copper sleeve 3, a tool adjusting block 4, and a screw 5. One end of the countersinking rod 1 has a square hole 1-1 near its head, and a screw hole 1-2 is provided on one side of the square hole 1-1. The cutter head 2 is installed in the square hole 1-1, and the screw 5 is screwed into the screw hole 1-1 to lock the cutter head 2. The copper sleeve 3 is fitted onto the countersinking rod 1, and the countersinking rod 1 is fixed to the bolt hole of the wave-shaped coupling 6 through the copper sleeve 3. The tool adjusting block 4 is located on one side of the cutter head 2 and is used to control the position of the cutter tip of the cutter head 2, thereby correcting the depth of cut and controlling the diameter of the countersink.

[0023] The blade setting block 4 includes a base 4-1 with a through hole and a limiting block 4-2 provided on the base. The base 4-1 is fitted onto the back scraper rod 1, and the limiting block 4-2 is located on one side of the blade head.

[0024] The limiting block is arc-shaped, which facilitates better contact with the cutting head.

[0025] The copper sleeve 3 is located in the middle of the anti-scraper rod, which can quickly position the anti-scraper rod and provide lubrication, reducing friction during the anti-scraping process.

[0026] The method of using this utility model is as follows:

[0027] like Figure 7 As shown, in use, first install the screw and copper sleeve on the back scraper rod, then insert them together into the bolt hole of the corrugated joint coupling. The square hole of the back scraper rod protrudes from the lower end of the bolt hole. Install the cutter head into the square hole of the back scraper rod, then install the tool setting block on the back scraper rod from below, with the cutter head against the tool setting block. After confirming the position, tighten the screw to lock the cutter head. The tool setting block can then be removed for back scraping hole machining. Because the bolt hole space of the corrugated joint coupling is small, the tool setting block can quickly set the position of the cutter tip, eliminating the need for additional measurements and ensuring the size of the countersink.

Claims

1. A device for counterscraping countersunk holes in a wave-shaped coupling on a steam turbine, characterized in that: It includes a back scraper rod, a cutter head, a copper sleeve, a tool setting block, and screws; one end of the back scraper rod has a square hole near the head, and a screw hole is provided on one side of the square hole. The cutter head is installed in the square hole, and the screw is screwed into the screw hole to lock the cutter head; the copper sleeve is sleeved on the back scraper rod, and the back scraper rod is fixed in the bolt hole of the wave joint coupling through the copper sleeve; the tool setting block is located on one side of the cutter head and is used to control the position of the cutter tip and correct the depth of cut.

2. The anti-scraping countersunk hole device for the corrugated coupling on a steam turbine according to claim 1, characterized in that: The cutting block includes a base with a through hole and a limiting block provided on the base. The base is fitted onto the back scraper rod, and the limiting block is located on one side of the cutting head.

3. The anti-scraping countersunk hole device for the corrugated coupling on a steam turbine according to claim 2, characterized in that: The limiting block is arc-shaped.

4. The anti-scraping countersunk hole device for the corrugated coupling on a steam turbine according to claim 1, characterized in that: The copper sleeve is located in the middle of the anti-scraper bar.

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