An angle adjustment mechanism for a right-angle milling head with indexing positioning and fine-tuning functions.

Abstract

This invention proposes a right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions. It includes a fine-tuning mechanism and a base. A rotary swing seat is rotatably connected to the base. The right-angle milling head is mounted on the side of the rotary swing seat away from the base. Multiple indexing holes are provided on the side of the base near the rotary swing seat, evenly distributed circumferentially along the rotation axis of the rotary swing seat. Positioning pins, matching the number and position of the indexing holes, are provided on the side of the rotary swing seat near the base. The diameter of the indexing holes is larger than the diameter of the positioning pins. The fine-tuning mechanism includes a first adjusting rod and a second adjusting rod, located on opposite sides of the rotary swing seat and arranged radially along the seat. Both rods are movably connected to the base, with one end contacting the outer wall of the rotary swing seat. This invention combines indexing positioning with continuous fine-tuning, improving adjustment accuracy. Simultaneously, it decouples the fine-tuning mechanism from the load transmission path, improving structural load-bearing capacity and rigidity.

Description

Technical Field

[0001] This invention relates to the field of auxiliary machining components for CNC machine tools, specifically to a right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions. Background Technology

[0002] In the actual machining process of CNC machine tools and machining centers, the right-angle milling head, as a core component for multi-directional machining, significantly impacts machining accuracy, production efficiency, and workpiece quality through its angle adjustment performance. For the angle adjustment mechanism of the right-angle milling head, the industry generally requires it to meet three main requirements: first, adjustment efficiency, enabling rapid response to machining needs and angle switching; second, positioning accuracy, ensuring stable position after angle adjustment to meet the dimensional tolerance requirements of precision machining; and third, structural rigidity, possessing sufficient load-bearing capacity to prevent angular deviation under cutting loads and ensure the stability of the machining process.

[0003] However, the existing right-angle milling head angle adjustment mechanism still has many shortcomings and cannot simultaneously meet the above three core requirements. The specific defects are as follows: 1. The indexing adjustment mechanism can only perform fixed-position adjustment of discrete angles and cannot make continuous and precise corrections according to actual processing needs, resulting in limited processing adaptability. 2. Some adjustment mechanisms use screw fine-tuning structures to achieve continuous adjustment. Although this solves the limitations of discrete adjustment, the load-bearing capacity of the screw drive structure is relatively weak. Under high-load cutting conditions, it is prone to deformation and wear, which affects the service life and adjustment reliability of the mechanism. 3. The existing adjustment mechanism has insufficient overall structural rigidity design, especially in the locking and fixing stage after angle adjustment. It lacks a stable and reliable rigid support structure, which makes the milling head prone to angle deviation when subjected to cutting load, thus affecting the machining accuracy of the workpiece and failing to meet the usage requirements of high-precision machining scenarios. Therefore, there is an urgent need for a right-angle milling head angle adjustment mechanism that combines rapid indexing and positioning with fine-tuning capabilities, and has strong structural rigidity and excellent load-bearing performance. Summary of the Invention

[0004] To address the problems existing in the background art, this invention proposes a right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions, including a fine-tuning mechanism and a base for connecting to a machine tool. A rotary swing seat is rotatably connected to the base. A right-angle milling head is installed on the side of the rotary swing seat away from the base. The side of the base near the rotary swing seat is provided with multiple indexing holes, which are evenly distributed circumferentially along the rotation axis of the rotary swing seat. The side of the rotary swing seat near the base is provided with positioning pins that match the position and number of the indexing holes. The diameter of the indexing holes is larger than the diameter of the positioning pins. The fine-tuning mechanism includes a first adjusting rod and a second adjusting rod. The first adjusting rod and the second adjusting rod are respectively located on both sides of the rotary swing seat and arranged radially along the rotary swing seat. The first adjusting rod and the second adjusting rod are movably connected to the base. One end of the first adjusting rod and the second adjusting rod respectively makes point contact with the outer wall of the rotary swing seat.

[0005] Preferably, both the first adjusting rod and the second adjusting rod are screw rods, and the screw rods are threadedly connected to the base.

[0006] Preferably, the ends of the first and second adjusting rods near the rotary swing seat are both spherical ends, and the outer wall of the spherical end is in point contact with the outer wall of the rotary swing seat.

[0007] Preferably, the base is rectangular, and the first adjusting rod and the second adjusting rod are located at opposite corners of the base.

[0008] Preferably, a rotating shaft is fixed in the middle of the base, the rotating swing seat is rotatably mounted on the rotating shaft, and the rotating swing seat can slide along the axial direction of the rotating shaft.

[0009] Preferably, it further includes a locking mechanism, which includes a locking plate located on the side of the rotary swing seat away from the indexing hole. The locking plate is connected to the base by bolts, and the axial direction of the bolts is parallel to the axial direction of the rotary shaft.

[0010] Preferably, the locking plate is provided with clearance holes for the passage of a right-angle milling head.

[0011] Preferably, an indexing plate is fixed on the side of the base near the rotary swing seat, and the indexing holes are provided on the indexing plate, with a plurality of indexing holes evenly arranged along the circumference of the indexing plate.

[0012] The beneficial effects of this invention are as follows: This invention combines indexing positioning with continuous fine-tuning, improving adjustment accuracy. Simultaneously, the point contact structure between the screw and the rotary swing seat decouples the fine-tuning mechanism from the load transmission path, reducing the stress on the indexing positioning structure and the fine-tuning mechanism, thus extending their service life. Furthermore, the invention includes a locking mechanism to achieve locking and fixation after angle adjustment, improving structural rigidity and ensuring processing stability. This invention has a simple structure, is easy to manufacture, and is readily applicable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 The structure of this invention explodes Figure 1 ; Figure 3 The structure of this invention explodes Figure 2 .

[0014] The following are the labels in the diagram: 1. Base; 2. Rotary swing seat; 3. First adjusting rod; 4. Second adjusting rod; 5. Rotary shaft; 6. Locking plate; 7. Bolt; 8. Spherical end; 9. Indexing plate; 10. Indexing hole; 11. Clearance hole; 12. Positioning pin. Detailed Implementation

[0015] To make the present invention clearer and more understandable, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one or more of the implementation methods and do not represent all embodiments.

[0016] In this article, terms such as "inner," "outer," "upper," and "lower" are established based on the positional relationships shown in the attached drawings. Depending on the attached drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection.

[0017] Combined with appendix Figure 1 -Appendix Figure 3 A right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions includes a fine-tuning mechanism and a base 1 for connecting to a machine tool. A rotary swing seat 2 is rotatably connected to the base 1. A right-angle milling head is installed on the side of the rotary swing seat 2 away from the base 1. The base 1 is provided with a plurality of indexing holes 10 on the side near the rotary swing seat 2. The plurality of indexing holes 10 are evenly distributed circumferentially along the rotation axis of the rotary swing seat 2. The rotary swing seat 2 is provided with a positioning pin 12 on the side near the base 1 that matches the position and number of the indexing holes 10. The diameter of the indexing holes 10 is larger than the diameter of the positioning pin 12. The fine-tuning mechanism includes a first adjusting rod 3 and a second adjusting rod 4. The first adjusting rod 3 and the second adjusting rod 4 are respectively located on both sides of the rotary swing seat 2 and arranged radially along the rotary swing seat 2. The first adjusting rod 3 and the second adjusting rod 4 are movably connected to the base 1. One end of the first adjusting rod 3 and the second adjusting rod 4 respectively makes point contact with the outer wall of the rotary swing seat 2.

[0018] Specifically, both the first adjusting rod 3 and the second adjusting rod 4 are screws, which are threadedly connected to the base 1. More specifically, the ends of both the first adjusting rod 3 and the second adjusting rod 4 near the rotary swing seat 2 are spherical ends 8, with the outer wall of the spherical end 8 in point contact with the outer wall of the rotary swing seat 2. By rotating the screw, the screw moves along its axial direction, and under the action of the point contact between the spherical end 8 and the rotary swing seat 2, the rotary swing seat 2 can be driven to rotate, thus achieving fine-tuning of the rotary swing seat 2.

[0019] Specifically, the base 1 is rectangular, and the first adjusting rod 3 and the second adjusting rod 4 are located at opposite corners of the base 1. The first adjusting rod 3 is used to adjust the rotary swing seat 2 in the forward direction, and the second adjusting rod 4 is used to adjust the rotary swing seat 2 in the reverse direction.

[0020] Specifically, a rotating shaft 5 is fixed in the middle of the base 1, and the rotating swing seat 2 is rotatably mounted on the rotating shaft 5, and the rotating swing seat 2 can slide along the axial direction of the rotating shaft 5. By moving the rotating swing seat 2 along the axial direction of the rotating shaft 5, the rotating swing seat 2 can move closer to or further away from the indexing hole 10, thereby enabling the positioning pin 12 to be inserted into or disengaged from the indexing hole 10. When the positioning pin 12 is disengaged from the indexing hole 10, the rotating swing seat 2 can rotate at a large angle along the rotating shaft 5 to achieve coarse angle adjustment; when the positioning pin 12 is inserted into the indexing hole 10, angle positioning is achieved.

[0021] More specifically, it also includes a locking mechanism, which includes a locking plate 6 located on the side of the rotary swing seat 2 away from the indexing hole 10. The locking plate 6 is connected to the base 1 by bolts 7, the axial direction of which is parallel to the axial direction of the rotary shaft 5. After the angle adjustment is completed, the bolts 7 are tightened, causing the locking plate 6 to press against the rotary swing seat 2. The two sides of the rotary swing seat 2 form surface contact friction pairs with the base 1 and the locking plate 6 respectively, thereby achieving the locking of the rotary swing seat 2.

[0022] More specifically, the locking plate 6 is provided with a clearance hole 11 for the passage of a right-angle milling head. The right-angle milling head mounted on the rotary swing seat 2 can pass through the clearance hole 11 through the locking plate 6.

[0023] Specifically, an indexing plate 9 is fixed on the side of the base 1 near the rotary swing seat 2, and the indexing holes 10 are provided on the indexing plate 9. A plurality of the indexing holes 10 are evenly arranged around the circumference of the indexing plate 9.

[0024] Usage process: During use, first loosen the locking mechanism to move the locking plate 6 away from the base 1. At this time, the rotary swing seat 2 can move axially along the rotary shaft 5 away from the base 1. Move the rotary swing seat 2 until the positioning pin 12 disengages from the indexing hole 10, releasing the positioning constraint. At this time, the rotary swing seat 2 is rotatable relative to the base 1. Rotate the rotary swing seat 2 to reach the target indexing angle position, and then move the rotary swing seat 2 to insert the positioning pin 12 into the indexing hole 10 to achieve coarse positioning. Initially lock the locking plate 6 so that the positioning pin 12 cannot disengage from the indexing hole 10. On this basis, rotate the screw to generate axial displacement, which acts on the offset position of the rotary swing seat 2, causing the rotary swing seat 2 to rotate at a small angle around the rotary shaft 5, thereby achieving precise adjustment. After the adjustment is completed, further tighten the locking mechanism so that the rotary swing seat 2 and the base 1 form a surface contact friction pair, locking the rotary swing seat 2. In the locked state, since the screw and the rotary swing seat 2 are in point contact, the fine adjustment mechanism and the indexing and positioning related structures (positioning pin 12, indexing plate 9) are separated from the load transmission path, so that the locking mechanism alone bears the processing load.

[0025] Although embodiments of the invention have been shown and described, those skilled in the art will be able to make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions, characterized in that: The system includes a fine-tuning mechanism and a base (1) for connection with a machine tool. A rotary swing seat (2) is rotatably connected to the base (1). A right-angle milling head is installed on the side of the rotary swing seat (2) away from the base (1). The base (1) is provided with multiple indexing holes (10) on the side near the rotary swing seat (2). The multiple indexing holes (10) are evenly distributed circumferentially along the rotation axis of the rotary swing seat (2). The rotary swing seat (2) is provided with positioning pins (12) on the side near the base (1) that match the position and number of the indexing holes (10). The diameter of the indexing holes (10) is larger than the diameter of the positioning pins (12). The fine-tuning mechanism includes a first adjusting rod (3) and a second adjusting rod (4). The first adjusting rod (3) and the second adjusting rod (4) are located on both sides of the rotary swing seat (2) and are arranged radially along the rotary swing seat (2). The first adjusting rod (3) and the second adjusting rod (4) are movably connected to the base (1). One end of the first adjusting rod (3) and the second adjusting rod (4) respectively makes point contact with the outer wall of the rotary swing seat (2).

2. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 1, characterized in that: The first adjusting rod (3) and the second adjusting rod (4) are both screw rods, and the screw rods are threadedly connected to the base (1).

3. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 2, characterized in that: The first adjusting rod (3) and the second adjusting rod (4) are both spherical ends (8) near the rotary swing seat (2), and the outer wall of the spherical end (8) is in point contact with the outer wall of the rotary swing seat (2).

4. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 3, characterized in that: The base (1) is rectangular, and the first adjusting rod (3) and the second adjusting rod (4) are located at opposite corners of the base (1).

5. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 1, characterized in that: The base (1) has a rotating shaft (5) fixed in the middle. The rotating swing seat (2) is rotatably mounted on the rotating shaft (5) and can slide along the axial direction of the rotating shaft (5).

6. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 5, characterized in that: It also includes a locking mechanism, which includes a locking plate (6) located on the side of the rotary swing seat (2) away from the indexing hole (10). The locking plate (6) is connected to the base (1) by a bolt (7), and the bolt (7) is axially parallel to the rotary shaft (5).

7. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 6, characterized in that: The locking plate (6) is provided with a clearance hole (11) for the passage of a right-angle milling head.

8. The right-angle milling head angle adjustment mechanism with indexing positioning and fine-tuning functions according to claim 1, characterized in that: The base (1) is fixed with an indexing plate (9) on the side near the rotary swing seat (2). The indexing holes (10) are provided on the indexing plate (9), and the plurality of indexing holes (10) are evenly arranged around the circumference of the indexing plate (9).

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