Special tool for finish machining of inner hole of turbine disc

Abstract

The utility model discloses a special tool for finish machining of an inner hole of a turbine disc, which comprises a rack, a case is arranged at the top of the rack, a cabinet door is hinged to the surface of the case, a machining plate is arranged in the middle of the interior of the case, a large clamping plate and a small clamping plate are arranged on the surface of the machining plate, and a collecting assembly is arranged in the case and located at the bottom of the machining plate. When burrs on the surface of an inner hole of a turbine disc are polished through a polishing wheel, an industrial dust collector can be started to work, air drawn by the industrial dust collector forms a negative pressure state in a collecting hopper, and therefore waste scraps falling during polishing can be sucked into the collecting hopper through an opening, are collected through the collecting hopper and can be discharged into a collecting box through a discharging pipe after being collected; and in the later period, a cleaning door hinged to the surface of the collecting box can be opened to conduct centralized cleaning on the waste chips collected in the collecting box, so that cleaning is convenient, and the problem that the waste chips splash and fall to the surface of the machining table to cause accumulation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbine disc processing, and in particular relates to a special tool for finely processing the inner hole of a turbine disc. Background Art

[0002] The turbine disc is a core component of modern aircraft engines. It is driven by high-temperature combustion gases in the engine combustion chamber, converting the thermal energy of the combustion gases into mechanical energy to drive the operation of the engine. The engine turbine disc operates in a high-speed, high-temperature, and high-pressure environment. If there are tiny cracks on the surface, they will quickly tear and damage the turbine disc. Therefore, the appearance requirements of the turbine disc are very strict. Before storage, it needs to be fine-machined to remove the sharp edge burrs on the inner hole of the turbine disc.

[0003] Currently, when deburring a turbine disc, a motor is generally used to drive a polishing wheel installed on a polishing machine to rotate at high speed. Due to the friction between the polishing wheel and the inner hole of the turbine disc to be polished, the purpose of trimming and deburring can be achieved. However, when polishing tiles, a large amount of residue and debris will inevitably be generated, and these residue and debris will splash everywhere and fall onto the surface of the processing table during the polishing process. If these trimmed debris are not cleaned up in time, they will accumulate, which will affect the subsequent deburring process and thus affect the processing efficiency of the turbine disc. Utility Model Content

[0004] The purpose of the utility model is to provide a special tool for fine-machining the inner hole of a turbine disk, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a special tool for fine-machining the inner hole of a turbine disk, comprising:

[0006] A frame is provided with a chassis on the top of the frame and a cabinet door is hinged on the surface of the chassis, a processing plate is provided in the middle of the chassis, and a large clamping plate and a small clamping plate are provided on the surface of the processing plate for clamping and fixing the turbine disc. A collecting component is provided in the chassis and at the bottom of the processing plate for collecting debris generated during the processing of the turbine disc. The industrial vacuum cleaner of the collecting component collects the debris generated during the processing into a collecting bucket, so that the debris in the collecting bucket is discharged into the collection box connected to the bottom of the frame through a discharge pipe for concentration, which is convenient for subsequent cleaning and recycling.

[0007] Preferably, the collecting assembly includes an opening, which is provided in the middle of the processing plate, the collecting hopper is connected to the bottom of the processing plate, and one end of the industrial vacuum cleaner is connected to the bottom of the collecting hopper through a pipe.

[0008] Preferably, the discharge pipe is connected to the bottom center of the collecting hopper and the other end of the discharge pipe is connected to the collecting box.

[0009] Preferably, the small clamping plate is connected to the surface of the processing plate and is located on one side of the opening, and the large clamping plate is slidably connected to the surface of the processing plate and is located on the other side of the opening.

[0010] Preferably, a first cylinder is provided on the surface of the processing plate and a piston rod of the first cylinder is connected to the large clamping plate, and the surfaces of the large clamping plate and the small clamping plate are both provided with tooth grooves matching the turbine disc.

[0011] Preferably, a second cylinder is provided on the top of the chassis and the piston rod of the second cylinder is movable through the chassis and connected to the moving block. The bottom of the moving block is connected to a motor and the output shaft of the motor is connected to the polishing wheel.

[0012] Preferably, both sides of the moving block are connected with guide rods, and one end of the guide rod is slidably connected to the sliding grooves provided in the two sides of the chassis.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) By placing one end of the turbine disc to be processed into the matching tooth groove on the surface of the small clamping plate and starting the first cylinder, the piston rod of the first cylinder pushes the large clamping plate to move toward the end close to the small clamping plate, and clamps the other end of the turbine disc through the tooth groove on the surface of the large clamping plate, thereby completing the fixation of the turbine disc, and then the second cylinder can be started, the piston rod of the second cylinder pushes the moving block to move toward the direction close to the turbine disc, and starts the motor to work, the output shaft of the motor drives the polishing wheel to rotate, and under the action of the second cylinder, the polishing wheel moves into the inner hole of the turbine disc, so that the burrs on the surface of the inner hole of the turbine disc are polished by the polishing wheel, and the teeth on the surface of the turbine disc are clamped by the tooth grooves on the surfaces of the large clamping plate and the small clamping plate, ensuring that the turbine disc will not shift during processing.

[0015] (2) When the burrs on the inner hole surface of the turbine disc are ground by the polishing wheel, the industrial vacuum cleaner can be started. The wind drawn by the industrial vacuum cleaner forms a negative pressure state in the collection bucket, so that the waste chips dropped by grinding can be sucked into the collection bucket through the opening, and then collected by the collection bucket. After collection, the control valve on the surface of the discharge pipe can be opened to allow the debris in the collection bucket to fall into the collection box through the discharge pipe, so that the waste chips generated by grinding can be collected by the collection box. At a later time, the cleaning door hinged on the surface of the collection box can be opened to centrally clean the waste chips collected in the collection box, which makes cleaning more convenient and avoids the problem of splashing and falling onto the surface of the processing table and causing accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a top view of the large splint and the small splint of the utility model;

[0019] Figure 4 This is a schematic diagram of the top view of the processing plate of the utility model;

[0020] Figure 5 This is a schematic diagram of the change between the conductive and closed states of the push-pull plate and the push-pull plate of the utility model.

[0021] In the figure: 1. Frame; 2. Chassis; 3. Cabinet door; 4. Processing plate; 5. Turbine disc; 6. Large splint; 7. Small splint; 8. Collecting bucket; 9. Industrial vacuum cleaner; 10. Collecting box; 11. Opening; 12. Discharge pipe; 13. Tooth groove; 14. Second cylinder; 15. Moving block; 16. Motor; 17. Polishing wheel; 18. Guide rod; 19. Slide; 20. First cylinder; 21. Rubber protective cover; 22. Filter cover; 23. Push-pull plate; 24. Blanking chute; 25. Blanking port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-5 A special tool for finishing the inner hole of a turbine disk shown in FIG. 1 includes:

[0024] A frame 1 is provided with a chassis 2 on the top of the frame 1 and a cabinet door 3 is hinged on the surface of the chassis 2. A processing plate 4 is provided in the middle of the chassis 2. A large splint 6 and a small splint 7 are provided on the surface of the processing plate 4 for clamping and fixing the turbine disc 5. A collecting component for collecting debris generated during the processing of the turbine disc 5 is provided inside the chassis 2 and at the bottom of the processing plate 4. The industrial vacuum cleaner 9 of the collecting component collects the debris generated during the processing into a collecting bucket 8, so that the debris in the collecting bucket 8 is discharged into the collecting box 10 connected to the bottom of the frame 1 through a discharge pipe 12 for concentration, which is convenient for subsequent cleaning and recycling.

[0025] The collecting assembly includes an opening 11, which is located in the middle of the processing plate 4. The collecting bucket 8 is connected to the bottom of the processing plate 4 and one end of the industrial vacuum cleaner 9 is connected to the bottom of the collecting bucket 8 through a pipe. A filter cover 22 is installed on the top of the pipe to prevent large metal debris from splashing into the pipe.

[0026] The discharge pipe 12 is connected to the bottom center of the collection hopper 8, and the other end of the discharge pipe 12 is connected to the collection box 10. A push-pull plate 23 is inserted into the discharge pipe 12, which can be used to block or open the discharge pipe 12 according to the situation. When the push-pull plate 23 is needed to block the discharge pipe 12, the drop opening 25 of the push-pull plate 23 is staggered with the nozzle of the discharge pipe 12, and the fallen debris is collected in the collection hopper 8. After a certain amount of collection, the push-pull plate 23 is pulled, and the drop opening 25 of the push-pull plate 23 is aligned with the nozzle of the discharge pipe 12, so that the discharge pipe 12 is open, and the debris is discharged into the collection box 10 through the discharge pipe 12. Of course, you can also pull the push-pull plate 23 first to put the discharge pipe 12 in a conductive state, so that the debris falls into the collection bucket 8 through the discharge pipe 12 and then enters the collection box 10 for collection. When the collection box 10 collects a certain amount and needs to be cleaned, you can first block the discharge pipe 12 through the push-pull plate 23. After the collection box 10 is cleaned, pull the push-pull plate 23 again to reopen the discharge pipe 12.

[0027] The small clamping plate 7 is connected to the surface of the processing plate 4 and is located on one side of the opening 11 , and the large clamping plate 6 is slidably connected to the surface of the processing plate 4 and is located on the other side of the opening 11 .

[0028] A first cylinder 20 is provided on the surface of the processing plate 4, and the piston rod of the first cylinder 20 is connected to the large splint 6. The surfaces of the large splint 6 and the small splint 7 are both provided with tooth grooves 13 that match the turbine disc 5. The teeth on the surface of the turbine disc 5 are clamped into the tooth grooves 13, which can enhance the stability of clamping and fixing the turbine disc 5 and prevent the turbine disc 5 from shifting when processing the turbine disc 5.

[0029] A second cylinder 14 is provided on the top of the chassis 2, and the piston rod of the second cylinder 14 is movable through the chassis 2 and connected to the moving block 15. A motor 16 is connected to the bottom of the moving block 15, and the output shaft of the motor 16 is connected to the polishing wheel 17. The output shaft of the motor 16 can drive the polishing wheel 17 to rotate, so that the inner hole of the turbine disc 5 can be polished by the polishing wheel 17.

[0030] The movable block 15 is connected to a guide rod 18 on both sides, and one end of the guide rod 18 is slidably connected to the slide groove 19 provided on both sides of the chassis 2. When the movable block 15 moves, the guide rods 18 at both ends slide in the slide groove 19 on both sides of the chassis 2 to guide the moving direction of the movable block 15, which can greatly enhance the stability of the movement of the movable block 15.

[0031] The special tooling for fine-machining the inner hole of the turbine disk is to place one end of the turbine disk 5 to be machined into the matching tooth groove 13 on the surface of the small clamping plate 7, and start the first cylinder 20. The piston rod of the first cylinder 20 pushes the large clamping plate 6 to move toward one end close to the small clamping plate 7, and clamps the other end of the turbine disk 5 through the tooth groove 13 on the surface of the large clamping plate 6, thereby completing the fixation of the turbine disk 5. Then the second cylinder 14 can be started, and the piston rod of the second cylinder 14 pushes the moving block 15 to move in the direction close to the turbine disk 5. When the moving block 15 moves, the guide rods 18 at both ends slide in the slide grooves 19 on both sides of the chassis 2 to guide the moving direction of the moving block 15, which can greatly enhance the stability of the movement of the moving block 15.

[0032] The starter motor 16 is started, and the output shaft of the motor 16 drives the polishing wheel 17 to rotate. Under the action of the second cylinder 14, the polishing wheel 17 moves into the inner hole of the turbine disc 5, so that the burrs on the surface of the inner hole of the turbine disc 5 are polished by the polishing wheel 17, and the teeth on the surface of the turbine disc 5 are clamped by the tooth grooves 13 on the surfaces of the large splint 6 and the small splint 7 to ensure that the turbine disc 5 will not shift during processing. Rubber protective sleeves 21 are provided in the tooth grooves 13 on the surfaces of the large splint 6 and the small splint 7. When the turbine disc 5 is clamped, the rubber protective sleeve 21 can protect the turbine disc 5 to avoid damage to the turbine disc 5.

[0033] When the burrs on the inner surface of the turbine disc 5 are polished by the polishing wheel 17, the industrial vacuum cleaner 9 can be started. The wind pumped by the industrial vacuum cleaner 9 forms a negative pressure state in the collection bucket 8, so that the waste chips dropped by the polishing can be sucked into the collection bucket 8 through the opening 11. Figure 4 As shown, the surface of the processing plate 4 is provided with a plurality of blanking grooves 24. When the burrs on the inner hole surface of the turbine disk 5 are polished, the debris accidentally splashed on the surface of the processing plate 4 can fall into the collection bucket 8 through the blanking grooves 24 for collection;

[0034] The debris is collected by the collecting bucket 8 and can pass through the discharge pipe 12 after collection, so that the debris in the collecting bucket 8 falls into the collecting box 10 through the discharge pipe 12, thereby collecting the waste debris generated by grinding through the collecting box 10, and the cleaning door hinged on the surface of the collecting box 10 can be opened later to centrally clean the waste debris collected in the collecting box 10, which makes cleaning more convenient and avoids the problem of splashing and falling onto the surface of the processing table to cause accumulation, and the fine debris entering the industrial vacuum cleaner 9 can be cleaned by opening the industrial vacuum cleaner 9 later to clean the fine debris collected in the industrial vacuum cleaner 9.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special tool for finishing the inner hole of a turbine disk, characterized in that: include: A frame (1) is provided with a chassis (2) on the top of the frame (1) and a cabinet door (3) is hingedly connected to the surface of the chassis (2); a processing plate (4) is provided in the middle of the chassis (2); a large clamping plate (6) and a small clamping plate (7) for clamping and fixing a turbine disc (5) are provided on the surface of the processing plate (4); a collecting component for collecting debris generated during the processing of the turbine disc (5) is provided in the chassis (2) and at the bottom of the processing plate (4); the debris generated during the processing is collected into a collecting bucket (8) by an industrial vacuum cleaner (9) of the collecting component, so that the debris in the collecting bucket (8) is discharged into a collecting box (10) connected to the bottom of the frame (1) through a discharge pipe (12) for collection, so as to facilitate subsequent cleaning and recycling.

2. The special tool for fine machining inner holes of turbine disks according to claim 1, characterized in that: The collecting assembly comprises an opening (11) which is arranged in the middle of the processing plate (4); the collecting hopper (8) is connected to the bottom of the processing plate (4); and one end of the industrial vacuum cleaner (9) is connected to the bottom of the collecting hopper (8) through a pipeline.

3. The special tool for fine machining inner hole of turbine disk according to claim 1, characterized in that: The discharge pipe (12) is connected to the bottom center of the collecting bucket (8) and the other end of the discharge pipe (12) is connected to the collecting box (10).

4. The special tool for fine machining inner holes of turbine disks according to claim 2, characterized in that: The small clamping plate (7) is connected to the surface of the processing plate (4) and is located on one side of the opening (11), and the large clamping plate (6) is slidably connected to the surface of the processing plate (4) and is located on the other side of the opening (11).

5. The special tool for fine machining inner hole of turbine disk according to claim 1, characterized in that: A first cylinder (20) is provided on the surface of the processing plate (4), and a piston rod of the first cylinder (20) is connected to a large clamping plate (6). Surfaces of the large clamping plate (6) and the small clamping plate (7) are both provided with tooth grooves (13) that match the turbine disc (5).

6. The special tool for fine machining inner hole of turbine disk according to claim 1, characterized in that: A second cylinder (14) is provided on the top of the chassis (2), and a piston rod of the second cylinder (14) is movably passed through the chassis (2) and is connected to a moving block (15). A motor (16) is connected to the bottom of the moving block (15), and an output shaft of the motor (16) is connected to a polishing wheel (17).

7. The special tool for fine machining inner hole of turbine disk according to claim 6, characterized in that: Both sides of the moving block (15) are connected to guide rods (18), and one end of the guide rod (18) is slidably connected to a slide groove (19) provided in both sides of the chassis (2).

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