Turbine valve disc inclined hole machining tool

Abstract

The utility model discloses a steam turbine valve disc inclined hole machining tool, relates to the technical field of machining tools, aims to solve the problems of difficult positioning and high machining difficulty of steam turbine valve discs with different specifications and sizes during machining in the prior art, and adopts the following scheme that the steam turbine valve disc inclined hole machining tool comprises a bottom plate, and one end of the top of the bottom plate is connected with an adjusting plate; a first worm and gear is arranged on one side of the adjusting plate, the adjusting plate is rotationally connected with a rotating shaft, the rotating shaft is connected with a second worm and gear, a rotating disc is fixed to the top end of the rotating shaft, and a fastening assembly is screwed to the top of the rotating disc. The steam turbine valve disc is placed on the top of the rotating disc, then the screw rod is screwed into the rotating disc 7, the T-shaped block extends out of the connecting shell and makes contact with the wall of a center hole of the steam turbine valve disc through pushing of the telescopic spring, and therefore the pressing block abuts against the top of the steam turbine valve disc. And the steam turbine valve disc is tightly pressed by the pressing block.

Description

Technical Field

[0001] The utility model relates to the technical field of processing tooling, in particular to a processing tooling for inclined holes of a steam turbine valve disc. Background Art

[0002] A steam turbine is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blade rows to rotate, thereby performing external work. As an important component in a steam turbine, the valve disc needs to be drilled with an inclined hole during its processing.

[0003] Due to the lack of dedicated fixtures, it is difficult to locate and process turbine valve discs of different sizes during processing. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a turbine valve disc inclined hole processing tooling, which overcomes the deficiencies in the prior art and effectively solves the problems in the prior art of difficult positioning and great processing difficulty of turbine valve discs of different specifications and sizes during processing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tool for processing inclined holes of a steam turbine valve disc comprises a base plate, a top end of the base plate is connected to an adjusting plate, and a first worm gear is arranged on one side of the adjusting plate, the adjusting plate is rotatably connected to a rotating shaft, and the rotating shaft is connected to a second worm gear, a rotating disk is fixed to the top of the rotating shaft, and a fastening assembly is screwed to the top of the rotating disk, the fastening assembly comprises a screw, a connecting shell fixed to the top of the screw, a rotating rod fixed to the top of the connecting shell, T-blocks respectively slidably connected to the two ends of the connecting shell, a pressure block fixed to the top of the T-block and a telescopic spring arranged at the two ends of the connecting shell.

[0007] Place the turbine valve disc on the top of the turntable, then rotate the rotating rod and screw the screw along the threaded groove on the turntable. Through the pushing of the telescopic spring, the T-block extends from the connecting shell and contacts the central hole wall of the turbine valve disc, so that the pressure block abuts against the top of the turbine valve disc. As the screw is screwed into the turntable, the pressure block presses the turbine valve disc tightly, and then the first worm gear adjusts the inclination angle of the adjusting plate to realize the opening of holes at different inclination angles of the turbine valve disc. In conjunction with the rotation of the turntable by the second worm gear, holes are opened at different positions on the top of the turbine valve disc.

[0008] Preferably, fixed blocks are fixed on both sides of one end of the top of the bottom plate, and convex rods are fixed on both sides of one end of the adjustment plate, and the convex rods are rotatably connected to the fixed blocks.

[0009] The tilt angle of the adjustment plate can be adjusted at the top of the bottom plate by the rotation connection between the convex rod and the fixed block.

[0010] Preferably, the worm wheel in the first worm gear is sleeved and fixed with one of the protruding rods, and the worm in the first worm gear is rotatably connected with a connecting block fixed on the top of the base plate.

[0011] The inclination angle of the adjustment plate is adjusted and locked by the first worm gear.

[0012] Preferably, a groove is provided at the other end of the adjustment plate, and the rotating shaft is rotatably connected to the bottom of the groove, the worm wheel in the second worm gear is fixed on the rotating shaft, and the worm in the second worm gear is rotatably connected to a connecting block fixed at the bottom of the groove.

[0013] The rotating shaft is rotated by the second worm gear, thereby rotating the turbine valve disc on the top of the rotating disk.

[0014] Preferably, a thread groove is provided on the top of the turntable, and the screw rod and the thread groove form a threaded fit.

[0015] The screw rod is threadedly connected with the rotating disk through a thread groove.

[0016] Preferably, both ends of the connecting shell are provided with T-shaped slots that form a sliding fit with the T-shaped block, and one end of the telescopic spring is connected and fixed to the inner wall of one end of the T-shaped slot, and the other end of the telescopic spring is connected and fixed to the T-shaped block.

[0017] The T-block is pushed by the telescopic spring to abut against the central hole wall of the steam turbine valve disc, so that the pressure block presses and fixes the steam turbine valve disc.

[0018] The beneficial effects of the utility model are:

[0019] By placing the turbine valve disc on the top of the turntable, and then screwing the screw into the turntable 7, the T-block is extended from the connecting shell through the pushing of the telescopic spring and contacts the central hole wall of the turbine valve disc, so that the pressure block abuts against the top of the turbine valve disc. As the screw is screwed into the turntable, the turbine valve disc is pressed by the pressure block, and then the first worm gear adjusts the inclination angle of the adjustment plate to realize opening holes with different inclination angles of the turbine valve disc. In conjunction with the rotation of the turntable by the second worm gear, holes are opened at different positions on the top of the turbine valve disc, which effectively solves the problems of difficult positioning and great processing difficulty of turbine valve discs of different sizes in the prior art during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a steam turbine valve disc inclined hole processing tooling proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the top structure of a bottom plate of a steam turbine valve disc inclined hole processing tooling proposed by the utility model;

[0022] Figure 3 The utility model is a schematic diagram of the fastening component structure of a tooling for processing inclined holes of a steam turbine valve disc.

[0023] In the figure: 1, bottom plate; 2, fixing block; 3, adjusting plate; 4, first worm gear; 5, rotating shaft; 6, second worm gear; 7, turntable; 8, fastening assembly; 9, screw rod; 10, connecting shell; 11, rotating rod; 12, T-block; 13, pressure block; 14, telescopic spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example:

[0026] Reference Figure 1-3 A tool for processing inclined holes of a steam turbine valve disc, comprising a bottom plate 1, an adjusting plate 3 is connected to one end of the top of the bottom plate 1, a first worm gear 4 is arranged on one side of the adjusting plate 3, the adjusting plate 3 is rotatably connected to a rotating shaft 5, the rotating shaft 5 is connected to a second worm gear 6, a rotating disk 7 is fixed to the top of the rotating shaft 5, a fastening assembly 8 is screwed to the top of the rotating disk 7, the fastening assembly 8 comprises a screw 9, a connecting shell 10 fixed to the top of the screw 9, a rotating rod 11 fixed to the top of the connecting shell 10, T-blocks 12 respectively connected to the two ends of the connecting shell 10 in a sliding manner, a pressing block 13 fixed to the top of the T-block 12 and a telescopic spring 14 arranged at the two ends of the connecting shell 10;

[0027] A fixing block 2 is fixed on both sides of one end of the top of the bottom plate 1, and a convex rod is fixed on both sides of one end of the adjustment plate 3, and the convex rod is rotatably connected to the fixing block 2. Through the rotational connection between the convex rod and the fixing block 2, the inclination angle of the adjustment plate 3 can be adjusted at the top of the bottom plate 1. The worm wheel in the first worm gear 4 is sleeved and fixed with one of the convex rods, and the worm in the first worm gear 4 is rotatably connected to the connecting block fixed on the top of the bottom plate 1, and the inclination angle of the adjustment plate 3 is adjusted and locked through the first worm gear 4;

[0028] A groove is provided at the other end of the adjusting plate 3, and the rotating shaft 5 is rotatably connected to the bottom of the groove. The worm wheel in the second worm gear 6 is sleeved and fixed on the rotating shaft 5, and the worm in the second worm gear 6 is rotatably connected to the connecting block fixed at the bottom of the groove. The rotating shaft 5 is rotated by the second worm gear 6, so that the turbine valve disc on the top of the rotating disk 7 is rotated. A thread groove is provided on the top of the rotating disk 7, and the screw 9 forms a threaded fit with the thread groove. The screw 9 is screwed to the rotating disk 7 through the thread groove.

[0029] Both ends of the connecting shell 10 are provided with T-slots that form a sliding fit with the T-block 12. One end of the telescopic spring 14 is connected and fixed to the inner wall of one end of the T-slot, and the other end of the telescopic spring 14 is connected and fixed to the T-block 12. The telescopic spring 14 pushes the T-block 12 to abut against the central hole wall of the turbine valve disc, so that the pressure block 13 presses and fixes the turbine valve disc.

[0030] Working principle:

[0031] During operation, the steam turbine valve disc is placed on the top of the turntable 7, and then the rotating rod 11 is rotated to screw the screw 9 along the threaded groove on the turntable 7. Through the pushing of the telescopic spring 14, the T-block 12 extends from the connecting shell 10 and contacts the central hole wall of the steam turbine valve disc, so that the pressing block 13 abuts against the top of the steam turbine valve disc. As the screw 9 is screwed into the turntable 7, the steam turbine valve disc is pressed by the pressing block 13, and then the first worm gear 4 adjusts the inclination angle of the adjusting plate 3 to realize the opening of holes with different inclination angles of the steam turbine valve disc, and cooperates with the second worm gear 6 to rotate the turntable 7 to open holes at different positions on the top of the steam turbine valve disc.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tool for processing inclined holes of steam turbine valve discs, comprising a bottom plate (1), characterized in that: An adjusting plate (3) is connected to one end of the top of the bottom plate (1), and a first worm gear (4) is arranged on one side of the adjusting plate (3); the adjusting plate (3) is rotatably connected to a rotating shaft (5), and the rotating shaft (5) is connected to a second worm gear (6); a rotating disk (7) is fixed to the top of the rotating shaft (5), and a fastening assembly (8) is screwed to the top of the rotating disk (7); the fastening assembly (8) comprises a screw rod (9), a connecting shell (10) fixed to the top of the screw rod (9), a rotating rod (11) fixed to the top of the connecting shell (10), a T-shaped block (12) respectively slidably connected to the two ends of the connecting shell (10), a pressing block (13) fixed to the top of the T-shaped block (12), and a telescopic spring (14) arranged at the two ends of the connecting shell (10).

2. A steam turbine valve disc inclined hole processing tool according to claim 1, characterized in that: Fixed blocks (2) are fixed on both sides of one end of the top of the bottom plate (1), and convex rods are fixed on both sides of one end of the adjustment plate (3), and the convex rods are rotatably connected to the fixed blocks (2).

3. The tooling for processing the inclined hole of a steam turbine valve disc according to claim 1, characterized in that: The worm wheel in the first worm gear (4) is sleeved and fixed to one of the protruding rods, and the worm in the first worm gear (4) is rotatably connected to a connecting block fixed to the top of the base plate (1).

4. The tooling for processing the inclined hole of a steam turbine valve disc according to claim 1, characterized in that: The other end of the adjustment plate (3) is provided with a groove, and the rotating shaft (5) is rotatably connected to the bottom of the groove, the worm wheel in the second worm gear (6) is sleeved and fixed on the rotating shaft (5), and the worm in the second worm gear (6) is rotatably connected to a connecting block fixed to the bottom of the groove.

5. The tooling for processing the inclined hole of a steam turbine valve disc according to claim 1, characterized in that: A thread groove is provided on the top of the rotating disk (7), and the screw rod (9) and the thread groove form a threaded fit.

6. The tooling for processing the inclined hole of a steam turbine valve disc according to claim 1, characterized in that: Both ends of the connection shell (10) are provided with T-shaped slots that form a sliding fit with the T-shaped block (12), and one end of the telescopic spring (14) is connected and fixed to the inner wall of one end of the T-shaped slot, and the other end of the telescopic spring (14) is connected and fixed to the T-shaped block (12).

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