An adjustable deep cavity assisted milling tool
Patent Information
- Application Number
- CN202522648842.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-15
AI Technical Summary
Existing auxiliary milling tools are difficult to efficiently process cavities of medium depth, requiring the addition of extended or extra-long transmission devices, which have low transmission efficiency and high cost.
An adjustable deep cavity auxiliary milling tool was designed, including a tool arm, a connecting plate, a high-speed electric spindle, and a cutting tool. Through the adjustable connecting plate and angle adjustment, combined with gravity adjustment bolts and auxiliary balance blocks, stable machining of deep cavities can be achieved. The high-speed electric spindle replaces the traditional transmission method, independently driving and increasing the speed.
It enables effective machining of cavities with a depth of over 1 meter, improving machining efficiency and precision, reducing the impact of vibration, and enhancing the forming quality and surface finish of the cavity.
Smart Images

Figure CN224927079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of milling tool technology, specifically to an adjustable deep cavity auxiliary milling tool. Background Technology
[0002] Auxiliary milling tools are commonly used machining tools in machining. They are usually mounted on the spindle of a milling machine or boring machine and driven by the spindle motor to rotate the tool, remove the material, and achieve the cutting purpose.
[0003] Existing auxiliary milling tools can only process open areas or shallow cavities. For medium-depth cavities, additional extended or extra-long transmission devices are required, resulting in low transmission efficiency, difficult processing, and high costs. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable deep cavity auxiliary milling tool to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: An adjustable deep cavity auxiliary milling tool includes a cutter arm, a connecting plate adjustablely disposed on the cutter arm and connected to a machine tool auxiliary tool mounting position, a milling tool adjustablely disposed at the front end of the cutter arm, multiple sets of gravity adjustment bolt mounting slots disposed at the rear end of the cutter arm, and multiple sets of auxiliary balance block mounting slots disposed on the cutter arm.
[0006] Preferably, the first connecting plate is provided with a plurality of evenly distributed fastening bolt holes, and the first connecting plate is also provided with a plurality of symmetrically arranged adjusting bolt holes.
[0007] Preferably, the milling tool includes a high-speed electric spindle and a cutting tool. The front end of the cutting arm is provided with an angle-adjustable connecting plate two. The high-speed electric spindle is located at one end of the connecting plate two. A clamp is provided on the high-speed electric spindle, and the cutting tool is detachably mounted on the clamp.
[0008] Preferably, the cutter arm is detachably provided with multiple sets of interoperable pipe clamps, each pipe clamp having a power cable through hole and a gas-liquid cooling pipe hole.
[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The tool arm of this utility model has sufficient extension length, enabling the tool to reach cavities with a depth of over one meter, solving the problem that traditional tools cannot reach deep cavities for machining, meeting the needs of special cavity machining. Furthermore, the first connecting plate can adjust the installation position, and the second connecting plate can adjust the cutting angle. With replaceable tools, it can adapt to the machining of deep cavities of different sizes and angles, making it highly versatile. By replacing the traditional transmission method with a high-speed electric spindle, independent drive avoids resonance. The maximum rotational speed improves the machining efficiency of materials such as copper and aluminum. The gravity adjustment bolt and auxiliary balance block provide double protection for balance, reducing the impact of vibration on machining accuracy and improving the cavity forming quality and surface finish. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pipeline clamp structure of this utility model; Figure 3 This is a schematic diagram of the auxiliary balance block mounting groove structure of this utility model.
[0011] In the diagram: 1. Tool arm; 2. Connecting plate one; 3. Fastening bolt hole; 4. Adjusting bolt hole; 5. Connecting plate two; 6. High-speed electric spindle; 7. Clamp; 8. Tool; 9. Gravity adjustment bolt mounting slot; 10. Auxiliary balance block mounting slot; 11. Pipe clamp; 12. Power cable through hole; 13. Gas-liquid cooling pipe hole. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0013] Please see Figure 1-3 An adjustable deep cavity auxiliary milling tool includes a cutter arm 1, a connecting plate 2 adjustablely provided on the cutter arm 1 and connected to the machine tool auxiliary tool mounting position, a milling tool adjustablely provided at the front end of the cutter arm 1, multiple sets of gravity adjustment bolt mounting slots 9 provided at the rear end of the cutter arm 1, multiple sets of auxiliary balance block mounting slots 10 provided on the cutter arm 1, multiple sets of evenly distributed fastening bolt holes 3 provided on the connecting plate 2, and multiple sets of adjustment bolt holes 4 symmetrically provided on the connecting plate 2. The milling tool includes a high-speed electric spindle 6 and a cutting tool 8. A connecting plate 2 5 is provided at the front end of the cutter arm 1 with adjustable angle. The high-speed electric spindle 6 is located at one end of the connecting plate 2 5. A clamp 7 is provided on the high-speed electric spindle 6, and the cutting tool 8 is detachably mounted on the clamp 7. The cutter arm 1 is the main support structure of the entire tool, serving as the carrier connecting various functional components. Its front end supports the milling tool, while its rear end houses a gravity adjustment structure. The entire arm provides sufficient extension length for deep cavity machining, ensuring that the tool 8 can reach cavities deeper than 1 meter. Simultaneously, it transmits cutting force through its own rigidity. Connecting disc 1 2 is mounted on the cutter arm 1 and is position-adjustable, used to connect and fix the entire tool to the machine tool auxiliary tool mounting position. It is the core connection node between the tool and the machine tool, ensuring overall stability during milling. Fastening bolt holes 3 are used to insert fastening bolts, rigidly fixing connecting disc 1 2 to the machine tool auxiliary tool mounting position and preventing loosening due to vibration during machining. Adjusting bolt holes 4 allow for fine-tuning of the installation angle of the cutter arm 1 by adjusting the bolt tightness, ensuring that the cutter arm 1 is parallel to the cutting plane and guaranteeing machining accuracy. Connecting disc 2 5 connects to the cutter arm 1 at one end and mounts the high-speed electric spindle 6 at the other. Its angle adjustment function changes the cutting direction of the high-speed electric spindle 6 and the tool 8, adapting to the machining needs of different angles of the inner wall of the deep cavity. The high-speed electric spindle 6 serves as the power source for milling, replacing the traditional machine tool spindle drive. It can achieve high-speed cutting from 0 to 30,000 rpm, improving the processing efficiency of soft materials such as copper and aluminum. At the same time, independent drive avoids transmission resonance and ensures cutting stability. The clamp 7 is used to detachably hold the tool 8, which is compatible with different specifications of milling cutters, drills and other cutting tools, making it easy to change the tool 8 according to processing needs. The tool 8 is installed on the clamp 7 and directly contacts the copper and aluminum material in the deep cavity to perform cutting and milling operations, completing the cavity forming or surface processing. The gravity adjustment bolt mounting slot 9 is used to install gravity adjustment bolts. By adjusting the installation position or number of bolts, the weight distribution of the front and rear ends of the tool arm 1 is balanced (the front end is prone to imbalance due to the weight of the electric spindle and tool 8), avoiding vibration caused by the center of gravity shift during processing. The auxiliary balance block mounting slot 10 is used to install auxiliary balance blocks. The number and position of the balance blocks can be flexibly configured according to parameters such as the length of the tool arm 1 and the processing load, further eliminating resonance during high-speed cutting and ensuring overall cutting stability.
[0014] Please see Figure 2 and Figure 3 The cutter arm 1 is detachably equipped with multiple sets of pipe clamps 11 that can cooperate with each other. The pipe clamps 11 are respectively provided with power line through holes 12 and gas-liquid cooling pipe holes 13. Multiple sets of pipe clamps 11 are used together to fix the power cord and gas-liquid cooling pipe, preventing the pipe from getting tangled or rubbing against the cavity wall during deep cavity machining due to tool arm movement and rotation, ensuring a neat pipe layout. The power cord through hole 12 allows the power cord of the high-speed electric spindle 6 to pass through. After being fixed by the pipe clamp 11, it ensures that the power supply line extends in an orderly manner, preventing power outages or line wear from affecting the operation of the electric spindle. The gas-liquid cooling pipe hole 13 allows the gas-liquid mixed cooling pipe to pass through, guiding the cooling medium (gas-liquid mixture) directly to the cutting area of the tool 8, promptly removing cutting heat, clearing chips, protecting the tool 8, and improving the surface quality of the machined part.
[0015] Working principle: When using the milling tool, bolts are inserted through the fastening bolt holes 3 on the connecting plate 1 2 to fix the tool as a whole in the machine tool auxiliary tool mounting position. Then, the tightness of the bolts is adjusted using the symmetrically distributed adjusting bolt holes 4 to fine-tune the installation angle of the tool arm 1, ensuring that the tool arm 1 is parallel to the cutting plane, thus completing the basic positioning before machining. Based on the extension length of the tool arm 1, the weight distribution of the high-speed electric spindle 6 and the cutting tool 8, adjusting bolts are installed in the gravity adjusting bolt mounting slot 9 at the tail end of the tool arm 1 to balance the weight at the front and rear ends. At the same time, auxiliary balance blocks are configured in the auxiliary balance block mounting slot 10 to eliminate the resonance risk during high-speed cutting and ensure the overall stability of the tool. The high-speed electric spindle 6 is adjusted through the connecting plate 2 5. The angle is adapted to the machining requirements of the inner wall of the deep cavity at different angles. The corresponding specification tool 8 is installed on the holder 7, and the power supply line is connected through the power cable hole 12 of the pipeline clamp 11 to supply power to the high-speed electric spindle 6. The gas-liquid cooling pipe passes through the gas-liquid cooling pipe hole 13 and is connected to the cutting area. After the high-speed electric spindle 6 is started, it drives the tool 8 to rotate at a high speed of 0-30000 rpm. The tool arm 1, with its sufficient extension length, sends the tool 8 into the deep cavity and directly contacts materials such as copper and aluminum to perform cutting operations. During the cutting process, the gas-liquid cooling medium reaches the cutting point of the tool 8 through the cooling pipe, removes heat and removes chips. The pipeline clamp 11 fixes the pipeline to prevent tangling or friction, ensuring continuous operation.
[0016] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An adjustable deep cavity auxiliary milling tool, characterized in that: include, The cutter arm (1) is adjustablely provided with a connecting plate (2) connected to the machine tool auxiliary tool mounting position. The front end of the cutter arm (1) is adjustablely provided with a milling tool. The tail end of the cutter arm (1) is provided with multiple sets of gravity adjustment bolt mounting slots (9). The cutter arm (1) is provided with multiple sets of auxiliary balance block mounting slots (10).
2. The adjustable deep cavity auxiliary milling tool according to claim 1, characterized in that: The connecting plate (2) is provided with multiple sets of evenly distributed fastening bolt holes (3), and the connecting plate (2) is also provided with multiple sets of symmetrical adjustment bolt holes (4).
3. The adjustable deep cavity auxiliary milling tool according to claim 2, characterized in that: The milling tool includes a high-speed electric spindle (6) and a cutting tool (8). The front end of the cutting arm (1) is provided with a connecting plate (5) that can be adjusted in angle. The high-speed electric spindle (6) is located at one end of the connecting plate (5). A clamp (7) is provided on the high-speed electric spindle (6). The cutting tool (8) is detachably installed on the clamp (7).
4. The adjustable deep cavity auxiliary milling tool according to claim 1, characterized in that: The cutter arm (1) is detachably provided with multiple sets of pipe clamps (11) that can cooperate with each other. The pipe clamps (11) are respectively provided with power line through holes (12) and gas-liquid cooling pipe holes (13).
