Special-shaped cutter for machining ultra-deep inner diameter of rotary drum

Abstract

The utility model provides a special-shaped cutter for machining the ultra-deep inner diameter of a rotary drum. The special-shaped cutter comprises an upper cutter body basic handle, a lower cutter body cutter handle, an inner cooling structure and a rhombic blade. The upper cutter body basic handle is connected with the lower cutter body handle, an inner cooling structure is arranged in the cutter body, and an outlet of the inner cooling structure is arranged at the front end of the lower cutter body handle where the rhombic blade is installed. The utility model solves the technical problems of deep cavity, complex internal contour, large processing difficulty of the inner diameter part, unstable processing performance, poor precision, low efficiency, easy deformation of parts and the like of the conventional rotary drum with a novel structure. By designing the novel non-standard special cutter, the machining performance is better and more stable, the machining precision of products is improved, deformation of parts in the machining process is reduced, and therefore the machining quality and the production efficiency are improved, and the machining cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gas turbine technology, specifically relating to a special-shaped cutting tool for machining ultra-deep inner diameter drums. Background Technology

[0002] The two connecting discs of the gas turbine drum are connected by welding, requiring secondary machining at the weld seam. However, the new drum structure has a deep cavity and complex internal contour, making machining of the inner diameter area difficult. Existing machining tools cannot meet the machining requirements. Therefore, based on the characteristics of the internal cavity of the new drum structure, a new type of non-standard special-purpose tool was designed to improve its machining performance, stability, and accuracy, reduce deformation during machining, thereby improving machining quality and production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a special-shaped tool for machining ultra-deep inner diameter drums, which solves the problems of deep cavity, complex internal contour, high machining difficulty, unstable machining performance, poor accuracy and low efficiency of the drum cavity in the current new structure.

[0004] A special-shaped cutting tool for machining ultra-deep inner diameters of a rotary drum includes an upper tool body base shank, a lower tool body shank, an internal cooling structure, and a rhomboid insert; the upper tool body base shank and the lower tool body shank are connected, the internal cooling structure is provided inside the tool body, and the outlet of the internal cooling structure is located at the front end of the lower tool body shank where the rhomboid insert is installed.

[0005] Furthermore, the upper tool body base shank and the lower tool body shank are connected by a serrated edge and locked with an internal hex bolt.

[0006] Furthermore, the upper blade base shank adopts an octagonal prism blade body.

[0007] Furthermore, the upper blade base shank adopts a CAPTO-6 type interface, which is connected to the receiver.

[0008] Furthermore, the lower blade handle is inlaid with a shock-absorbing block.

[0009] Furthermore, the lower blade holder and the rhomboid blade are fixed together by locking screws.

[0010] Furthermore, the lower blade holder adopts a 93-degree principal cutting edge angle.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention addresses the technical challenges of current novel drum-shaped machining structures, such as deep cavities, complex internal contours, difficult machining of the inner diameter, unstable machining performance, poor precision, low efficiency, and susceptibility to part deformation. By designing a novel non-standard special-purpose cutting tool, its machining performance is improved and stabilized, increasing product machining precision, reducing part deformation during machining, thereby improving machining quality and production efficiency, and reducing machining costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the tool of this utility model;

[0014] Figure 2 This is a partial enlarged view of the structure of the tool of this utility model;

[0015] Figure 3 This is a partial enlarged view of the blade and handle of this utility model;

[0016] Figure 4 This is a schematic diagram showing the connection between the machine tool positioning interface and the cutting tool of this utility model;

[0017] Figure 5 This is a schematic diagram of the rotating drum workpiece of this utility model;

[0018] Figure 6 This is a schematic diagram of the workpiece being machined using the cutting tool of this utility model.

[0019] In the diagram: 1. Upper tool body base shank, 2. Lower tool body shank, 3. Internal cooling structure, 4. Rhomboid insert, 5. Socket head cap screw, 6. Anti-vibration block, 7. Locking screw A, 8. Locking screw B, 9. Rhomboid insert pad. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] A special-shaped cutting tool for machining ultra-deep inner diameter drums includes an upper tool body base shank 1, a lower tool body shank 2, an internal cooling structure 3, and a rhomboid insert 4. The upper tool body base shank 1 and the lower tool body shank 2 are connected. The internal cooling structure 3 is installed inside the tool body. The outlet of the internal cooling structure 3 is located at the front end of the lower tool body shank 2 where the rhomboid insert 4 is installed, ensuring that the coolant is sprayed to the tool tip, effectively reducing the cutting temperature, reducing tool wear, and thus improving machining quality and production efficiency.

[0022] The upper tool body base shank 1 and the lower tool body shank 2 are connected by a serrated edge and locked with an internal hex bolt 5 to increase the rigidity of the tool connection.

[0023] Among them, the upper blade base shank 1 adopts an octagonal prism blade body;

[0024] The octagonal prism tool body has strong performance, giving it a certain strength and hardness to ensure that it will not deform or break during cutting, thereby improving the cutting performance and life of the tool and making the machining performance more stable.

[0025] Among them, the basic handle 1 of the blade body adopts a CAPTO-6 type interface, and the CAPTO-6 is connected to the receiver;

[0026] The CAPTO-6 tool holder is positioned and connected to the machine tool interface, allowing operators to change tools quickly, accurately, and conveniently. The CAPTO-6 tool holder also provides stable tool clamping and stronger resistance to machining forces.

[0027] Among them, the lower blade handle 2 is inlaid with a shock-absorbing block 6;

[0028] The anti-vibration block 6 eliminates vibrations during processing, prevents vibration marks from forming during processing, and ensures that the processed surface meets the roughness requirements of the design drawings.

[0029] Among them, the lower blade handle 2 and the rhomboid blade 4 are fixed by locking screw A7;

[0030] The diamond-shaped insert 4 is a 55-degree diamond-shaped insert, which can withstand higher feed rates, making the machining process faster and more efficient, with stronger cutting ability and better results. The 55-degree diamond-shaped insert is more suitable for machining weld seams, providing a higher metal removal rate and machining efficiency. A tool pad is embedded under the insert to protect the tool body, distribute pressure, reduce vibration, and improve machining accuracy.

[0031] Among them, the blade body and handle 2 adopt a 93-degree main cutting edge angle;

[0032] This ensures that the cutting force of the insert is aligned with the axis of the workpiece, avoiding the application of a force perpendicular to the workpiece, thereby reducing vibration and deformation.

[0033] This utility model, through non-standard design of the cutting tool, adopts a CAPTO-6 type interface for the upper tool body base shank 1, enabling rapid positioning and connection between the cutting tool and the machine tool during machining. Based on the characteristics of the workpiece being machined, the cutting tool body is designed with an irregular shape to prevent tool interference during machining. The design incorporates a sawtooth connection structure, an octagonal prism structure, an internal cooling structure 3, a shock-absorbing block structure, a rhomboid 55-degree insert structure, a bolt and screw connection structure, and a 93-degree main cutting edge angle structure for the insert, resulting in better and more stable machining performance, improved product machining accuracy, reduced deformation of parts during machining, thereby improving machining quality and production efficiency, and reducing machining costs.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A special-shaped cutting tool for machining ultra-deep inner diameters of rotary drums, characterized in that, It includes an upper blade base shank (1), a lower blade shank (2), an internal cooling structure (3), and a rhomboid blade (4); the upper blade base shank (1) and the lower blade shank (2) are connected, and an internal cooling structure (3) is provided inside the blade body. The outlet of the internal cooling structure (3) is located at the front end of the lower blade shank (2) where the rhomboid blade (4) is installed.

2. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The upper blade base shank (1) and the lower blade shank (2) are connected by a sawtooth pattern and locked with an internal hex bolt (5).

3. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The upper blade base shank (1) adopts an octagonal prism blade body.

4. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The upper blade base shank (1) adopts a CAPTO-6 type interface, which is connected to the receiver.

5. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The lower blade handle (2) is inlaid with a shock-absorbing block (6).

6. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The lower blade handle (2) and the rhomboid blade (4) are fixed by locking screw A (7).

7. The irregularly shaped cutting tool for machining ultra-deep inner diameter drums according to claim 1, characterized in that, The lower blade handle (2) adopts a 93-degree principal cutting edge angle.

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