Special-shaped hole boring cutter handle

Abstract

The utility model discloses a special-shaped hole boring cutter handle in the technical field of boring cutters, which comprises a special-shaped hole boring cutter main handle body, the lower end of the special-shaped hole boring cutter main handle body is connected with an upper shell, an orientation ring is sleeved outside the joint of the special-shaped hole boring cutter main handle body and the upper shell, the lower end of the upper shell is connected with a lower shell, and the orientation ring is sleeved outside the lower shell. The lower end of the lower shell is connected with a clamping handle, the upper end of the inner side of the clamping handle is connected with an adjusting sleeve, the outer portion of the upper end of the clamping handle is sleeved with a track ring, the upper end of the clamping handle is connected with a bearing pressing plate, one side of the lower shell is provided with an orientation seat, and one side of the orientation seat is connected with a lower orientation rod. One end of the lower orientation rod is connected with an upper orientation rod; and the clamped cutter can be directly driven to move according to a preset track, so that the circular motion of the cutter handle is converted into the non-circular motion of the cutter, and various non-circular holes can be bored on a CNC (Computer Numerical Control) machine tool. The purposes of concentrating procedures, reducing circulation and lowering cost are achieved.

Description

Technical Field

[0001] This utility model relates to the field of boring tools, specifically a boring tool holder for irregular holes. Background Technology

[0002] With economic development and social progress, functional tool holders are becoming increasingly common in production. In the machining of various square holes, the inability to directly machine irregular holes on CNC machine tools leads to low production efficiency, and the need for sequential processing increases production cycle time. Currently, machining square holes and other irregular holes on products involves either milling the shape trajectory on a CNC machine, resulting in low efficiency and the inability to machine certain shapes. Some irregular holes, such as internal hexagonal holes, require machining on specialized equipment such as wire cutting machines; this increases the number of processes and extends the machining time. Furthermore, machining irregular holes individually requires multiple clamping operations on different machines, leading to bumps, scratches, and increased machining errors, ultimately reducing product quality. Therefore, this invention proposes a boring tool holder for irregular holes. Utility Model Content

[0003] The purpose of this utility model is to provide a boring tool holder for irregular holes, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a boring bar holder for irregular holes, comprising a main body of the boring bar holder for irregular holes, an upper housing connected to the lower end of the main body of the boring bar holder for irregular holes, an external directional ring sleeved at the connection between the main body of the boring bar holder for irregular holes and the upper housing, a lower housing connected to the lower end of the upper housing, a clamping handle connected to the lower end of the lower housing, an adjusting sleeve connected to the upper inner side of the clamping handle, a track ring sleeved to the upper outer side of the clamping handle, a bearing pressure plate connected to the upper end of the clamping handle, a directional seat installed on one side of the upper housing, a lower directional rod connected to one side of the directional seat, and an upper directional rod connected to one end of the lower directional rod.

[0005] As a further optimization of this technical solution, the upper guide rod is fitted with a positioning screw and a small round nut, the lower guide rod and the guide seat are fitted with a guide plate and fixed by an internal hexagonal head screw, the guide seat is connected to one side of the upper housing by an internal hexagonal head screw, and a cylindrical helical compression spring is installed inside the lower guide rod, the other end of the cylindrical helical compression spring is fixed to the guide seat.

[0006] As a further optimization of this technical solution, the bearing pressure plate is fixed to the main body of the shaped hole boring tool by a countersunk hexagonal screw, and a dial is installed at the connection.

[0007] As a further optimization of this technical solution, the upper housing and the lower housing are fixed together by a second internal hexagonal head screw, a support ring is connected to the track ring, and a self-lubricating thrust washer is connected to the support ring.

[0008] As a further optimization of this technical solution, a spacer is also installed inside the lower housing, the spacer being located outside the clamping handle and on one side of the self-lubricating thrust washer.

[0009] As a further optimization of this technical solution, a deep groove ball bearing is also installed on the track ring, and the adjusting sleeve and the clamping handle are fixed by an internal hexagonal set screw.

[0010] As a further optimization of this technical solution, the upper housing and the lower directional rod are fixed by a cylindrical pin, the bearing pressure plate and the main body of the shaped hole boring tool are fixed by a cylindrical pin, and a locking outer ring type angular contact ball bearing is provided at the connection between the upper housing and the main body of the shaped hole boring tool located inside the directional ring.

[0011] As a further optimization of this technical solution, the lower end of the drive mechanism is fixed to the inner wall of the cabinet by a connecting plate.

[0012] Compared with the prior art, the present invention provides a boring tool holder for irregularly shaped holes, which has the following advantages:

[0013] It can directly drive the clamped tool to perform controllable periodic motion, converting rotational motion into a preset trajectory motion. It features low vibration, low mass, extremely low impact load, and minimal impact on the machine tool. Simultaneously, it offers high processing efficiency, achieving one-time boring of irregularly shaped holes. It can concentrate processes in multi-process, multi-stage machining on CNC machine tools, reducing workflow and lowering costs. It converts the circular motion of the rotating tool holder into the non-circular motion (e.g., hexagonal, elliptical, etc.) of the tool along a preset trajectory, enabling boring of various non-circular holes (e.g., hexagonal, elliptical holes) on CNC machine tools. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main body of the shank of the irregular hole boring tool of this utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the upper shell structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the orientation seat structure of this utility model.

[0019] In the diagram: 1. Main body of the boring bar for irregular holes; 2. Guide ring; 3. Positioning screw; 4. Upper guide rod; 5. Small round nut; 6. Socket head cap screw; 7. Locking outer ring type angular contact ball bearing; 8. Guide plate; 9. Cylindrical helical compression spring; 10. Socket head cap screw; 11. Lower guide rod; 12. Guide seat; 13. Socket countersunk screw; 14. Bearing pressure plate; 15. Dial; 16. Second Socket head cap screw; 17. Track ring; 18. Support ring; 19. Self-lubricating thrust washer; 20. Spacer; 21. Lower housing; 22. Deep groove ball bearing; 23. Clamping handle; 24. Socket flat end set screw; 25. Adjusting sleeve; 26. Cylindrical pin one; 27. Upper housing; 28. Cylindrical pin two. Detailed Implementation

[0020] 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.

[0021] Example 1:

[0022] Please see Figures 1 to 5 This embodiment provides a technical solution: a boring bar holder for irregular holes, including a main body 1 of the boring bar holder for irregular holes, an upper housing 27 connected to the lower end of the main body 1 of the boring bar holder for irregular holes, an directional ring 2 sleeved on the outside of the connection between the main body 1 of the boring bar holder for irregular holes and the upper housing 27, a lower housing 21 connected to the lower end of the upper housing 27, a clamping handle 23 connected to the lower end of the lower housing 21, an adjusting sleeve 25 connected to the upper inner side of the clamping handle 23, a track ring 17 sleeved on the outside of the upper end of the clamping handle 23, a bearing pressure plate 14 connected to the upper end of the clamping handle 23, a directional seat 12 installed on one side of the upper housing 27, a lower directional rod 11 connected to one side of the directional seat 12, and an upper directional rod 4 connected to one end of the lower directional rod 11.

[0023] More specifically, the upper guide rod 4 is secured by a positioning screw 3 and a small round nut 5, the lower guide rod 11 and the guide seat 12 are fitted with a guide plate 8 and fixed by an internal hexagonal head screw 6 (8*14*M66), the guide seat 12 is connected to one side of the upper housing 27 by an internal hexagonal head screw 10, and a cylindrical helical compression spring 9 is installed inside the lower guide rod 11, with the other end of the cylindrical helical compression spring 9 fixed to the guide seat 12.

[0024] More specifically, the bearing pressure plate 14 is fixed to the main body 1 of the shaped hole boring tool by a 12.09 grade internal hex countersunk screw 13, and a dial 15 is installed at the connection.

[0025] More specifically, the upper housing 27 and the lower housing 21 are fixed together by a second hexagon socket head cap screw 16, and a support ring 18 is connected to the track ring 17, and a self-lubricating thrust washer WC38SF19 is connected to the support ring 18.

[0026] More specifically, a spacer 20 is also installed inside the lower housing 21. The spacer 20 is located outside the clamping handle 23 and on one side of the self-lubricating thrust washer WC38SF19.

[0027] More specifically, a deep groove ball bearing 619 / 4-2RZ22 is also installed on the track ring 17, and the adjusting sleeve 25 and the clamping handle 23 are fixed by a 12.9 grade internal hexagonal flat-end set screw 24.

[0028] More specifically, the upper housing 27 is fixed to the lower guide rod 11 by a cylindrical pin 26, the bearing pressure plate 14 is fixed to the main body 1 of the shaped hole boring tool by a cylindrical pin 28, and a 71807 lock-out outer ring type angular contact ball bearing 7 is provided at the connection between the upper housing 27 and the main body 1 of the shaped hole boring tool, located inside the guide ring 2.

[0029] In use, the tool holder is mounted on the CNC spindle and the kinetic energy is transmitted to the bearing pressure plate 14 through a preset speed. The bearing pressure plate 14 and the dial 15 are connected by a cross slider, and the kinetic energy is transmitted to the dial 15.

[0030] The dial 15 has a rotating clamping handle 23; the dial 15 and the clamping handle 23 are driven by a keyway.

[0031] Three deep groove ball bearings 22, model 619 / 4-2RZ, are installed on the clamping handle 23. The rotation of the clamping handle 23 synchronously drives the three bearings to rotate. The three bearings are divided into upper, middle and lower layers, respectively corresponding to the track ring 17. The upper bearing moves along the upper track of the track ring 17; the middle bearing moves along the middle track of the track ring 17; and the lower bearing moves along the lower track of the track ring 17.

[0032] The adjusting sleeve 25 is installed inside the clamping handle 23 to adjust the size of the profile of the actual output irregular hole.

[0033] The guide seat 12 is mounted on the upper housing 27, and the positioning screw 3 and M10 small round nut 5 are mounted on the upper guide rod 4; the internal hexagonal head axial screw 6 (8*14*M6) passes through the guide plate 8 to form a guide device. It is used to adjust the tool holder's tool changing orientation angle on the CNC spindle, so as to facilitate accurate tool magazine loading each time.

[0034] A locking outer ring type angular contact ball bearing 7 (71807) is installed between the main body 1 of the shaped hole boring tool and the upper housing 27 to maintain the coaxiality of the main body 1 of the shaped hole boring tool and the upper housing 27 and increase stability.

[0035] Cylindrical pin 28 (5×628) is installed between the main body 1 of the shaped hole boring tool and the bearing pressure plate 14, and serves as a positioning tool.

[0036] Cylindrical pin 26 (4×1226) is installed between the upper housing 27 and the track ring 17 to serve a positioning function.

[0037] The support ring 18 is installed between the track ring 17 and the self-lubricating thrust washer 19 (WC38SF). During the cutting process, due to the generation of a large radial force, the support ring 18 rotates synchronously in the preset gap between the two to stabilize the clamping handle 23.

[0038] The directional ring 2, in conjunction with the directional device, is used to pre-adjust the angle of the tool holder relative to the spindle when installing the tool holder.

[0039] The above describes the working principle of a method that uses three guide wheels rolling on a preset trajectory ring 17 to convert the trajectory into the required trajectory of the irregular hole tool tip.

[0040] It can directly drive the clamped tool to move along a predetermined trajectory, realizing the conversion of the circular motion of the rotating tool holder into the non-circular motion of the tool (such as hexagonal, elliptical, etc.) along a preset trajectory. This enables boring of various non-circular holes (such as hexagonal holes, elliptical holes, etc.) on CNC machine tools. It achieves the goal of consolidating processes, reducing workflow, and lowering costs in multi-tasking and multi-process machining.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boring tool holder with irregular hole shape, characterized in that: The tool includes a main body (1) of a shaped hole boring tool, with an upper housing (27) connected to the lower end of the main body (1). A guide ring (2) is sleeved on the outside of the connection between the main body (1) and the upper housing (27). A lower housing (21) is connected to the lower end of the upper housing (27). A clamping handle (23) is connected to the lower end of the lower housing (21). An adjusting sleeve (25) is connected to the upper end of the inner side of the clamping handle (23). A track ring (17) is sleeved on the outside of the upper end of the clamping handle (23). A bearing pressure plate (14) is connected to the upper end of the clamping handle (23). A guide seat (12) is installed on one side of the upper housing (27). A lower guide rod (11) is connected to one side of the guide seat (12). An upper guide rod (4) is connected to one end of the lower guide rod (11).

2. The boring tool holder for irregular holes according to claim 1, characterized in that: The upper guide rod (4) is secured by a positioning screw (3) and a small round nut (5). The lower guide rod (11) and the guide seat (12) are fitted with a guide plate (8) and fixed by an internal hexagonal head screw (6). The guide seat (12) is connected to one side of the upper housing (27) by an internal hexagonal head screw (10). A cylindrical helical compression spring (9) is installed inside the lower guide rod (11), and the other end of the cylindrical helical compression spring (9) is fixed on the guide seat (12).

3. The boring tool holder for irregular holes according to claim 2, characterized in that: The bearing pressure plate (14) is fixed to the main body (1) of the shaped hole boring tool by a countersunk hexagonal screw (13) and a dial (15) is installed at the connection.

4. The boring tool holder for irregular holes according to claim 3, characterized in that: The upper housing (27) and the lower housing (21) are fixed together by a second internal hexagonal head screw (16). A support ring (18) is connected to the track ring (17), and a self-lubricating thrust washer (19) is connected to the support ring (18).

5. A boring tool holder for irregular holes according to claim 4, characterized in that: The lower housing (21) is also equipped with a spacer (20), which is located outside the clamping handle (23) and on one side of the self-lubricating thrust washer (19).

6. A boring tool holder for irregular holes according to claim 5, characterized in that: A deep groove ball bearing (22) is also installed on the track ring (17), and the adjusting sleeve (25) and the clamping handle (23) are fixed by a 12.9 grade internal hexagonal flat end set screw (24).

7. A boring tool holder for irregular holes according to claim 6, characterized in that: The upper housing (27) is fixed to the lower guide rod (11) by a cylindrical pin (26), the bearing pressure plate (14) is fixed to the main body of the shaped hole boring tool (1) by a cylindrical pin (28), and a locking outer ring type angular contact ball bearing (7) is provided at the connection between the upper housing (27) and the main body of the shaped hole boring tool (1) and located inside the guide ring (2).

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