Chuck structure of cutting, milling and drilling tool

Abstract

The utility model relates to a chuck structure of a cutting, milling and drilling tool, and relates to the technical field of machining auxiliary accessories. The chuck structure of the cutting, milling and drilling tool comprises a chuck head and a chuck axis, one end of the chuck head is a connecting end, the other end of the chuck head is a deformation end, a mounting hole is formed in one end of the chuck axis, and the connecting end of the chuck head is located in the mounting hole and is in threaded connection with the chuck axis. The deformation end of the chuck head is provided with a clamping hole which faces inwards from the end face in the axial direction, the deformation end of the chuck head is provided with a conical circumferential face, and the connecting end of the chuck head is further provided with at least two deformation receding grooves which penetrate through the clamping hole in the radial direction of the chuck head and extend to the conical circumferential face; the conical peripheral surface of the chuck head is attached to the hole wall of the mounting hole; a connecting hole used for being connected with an extension rod is formed in the other end of the chuck axis. The chuck structure of the cutting, milling and drilling tool is convenient to use, safe and efficient, and the cutting, milling and drilling tool can be rapidly and reliably mounted and dismounted.

Description

Technical Field

[0001] The present application relates to the technical field of machining auxiliary accessories, and in particular to a chuck structure for cutting, milling and drilling tools. Background Art

[0002] Tool chucks, as common mechanical components, are widely used in a variety of mechanical equipment, particularly in drilling machines, lathes, milling machines, handheld electric drills, and other equipment. They are used to clamp and secure various tools or workpieces, ensuring stability and precision during machining. With the advancement of industrial automation and precision machining technology, the demand for tool chucks continues to increase, placing higher demands on their performance and adaptability. While traditional tool chuck designs can meet basic usage requirements, they still have certain limitations in changing working environments, especially when it comes to clamping tools or drill bits of varying sizes and shapes. More flexible and efficient solutions are needed.

[0003] Currently, to meet the clamping requirements of various application scenarios, the industry generally uses a variety of tool chuck types, such as spring chucks, quick-change chucks, and modular chucks. Each of these chucks has its own unique characteristics and is suitable for different processing conditions. For example, spring chucks clamp tools through elastic deformation and are suitable for small-diameter tools; quick-change chucks adapt to tools of different sizes by quickly changing the chuck, improving production efficiency; and modular chucks achieve multifunctional applications through a detachable modular design. However, these traditional chucks still have some shortcomings in actual use.

[0004] Although existing tool chucks have solved the clamping needs in multiple scenarios to a certain extent, they still have problems such as insufficient flexibility, inconvenience in use, and single function. Utility Model Content

[0005] In order to improve the ease of use of a tool chuck, the present application provides a chuck structure for a cutting, milling, and drilling tool.

[0006] The present application provides a chuck structure for a cutting, milling, and drilling tool that adopts the following technical solution:

[0007] A chuck structure for a cutting, milling, and drilling tool comprises a chuck head and a chuck axis; the chuck head is mounted on the chuck axis;

[0008] One end of the chuck head is a connecting end, and the other end is a deforming end. One end of the chuck axis is provided with a mounting hole. The connecting end of the chuck head is located in the mounting hole and is threadedly connected to the chuck axis.

[0009] The deformable end of the chuck head is provided with a clamping hole extending axially inward from the end face thereof, and the outer diameter of the deformable end of the chuck head gradually increases from the end close to the connecting end to the end away from the connecting end, thereby forming a conical circumferential surface. The connecting end of the chuck head is also provided with at least two deformation relief grooves extending radially from the clamping hole to the conical circumferential surface along the chuck head; the outer circumferential surface of the deformable end of the chuck head is in contact with the wall of the mounting hole;

[0010] The other end of the chuck axis is provided with a connection hole for connecting the extension rod.

[0011] The chuck structure in this application is used to clamp tools such as drill bits. The connecting hole of the chuck axis is used to connect an extension rod. The extension rod is usually a metal rod, one end of which is connected to the chuck of a mechanical device such as a handheld electric drill, and the other end is connected to the chuck axis, thereby extending the extension length of tools such as drill bits, and is suitable for special working environments. The shank section of the drill bit and other tools is inserted into the clamping hole of the chuck head. By rotating the chuck head, the chuck head moves axially in the mounting hole of the chuck axis. The conical circumference of the chuck head cooperates with the inner wall of the mounting hole of the chuck axis, squeezing the deformed end of the chuck head, which is deformed through the deformation groove, thereby firmly clamping and fixing tools such as drill bits. When it is necessary to remove a tool such as a drill bit, the chuck head can be rotated in the opposite direction to loosen the tool such as the drill bit, making it easy to remove.

[0012] By adopting the above technical solution, the chuck structure of the present application can be used in combination with extension rods of different lengths, thereby meeting a variety of different usage scenarios. The assembly and use of the entire chuck structure are very convenient, and the connection is stable and reliable.

[0013] Optionally, there are four deformation clearance grooves, which are evenly spaced along the circumference of the chuck head so that the deformation clearance grooves form a cross shape as a whole, and the clamping hole is triangular, which is used to match the triangular handle of the tool to limit the circumferential rotation between the two.

[0014] By adopting this technical solution, the chuck head features four deformation relief grooves, evenly distributed along the circumference to form a cross. This allows the chuck head to deform evenly when subjected to pressure, thereby better clamping the tool shank. Furthermore, the triangular clamping hole matches the triangular shank of the tool, effectively limiting relative rotation between the tool and the chuck, and improving clamping stability and reliability.

[0015] Optionally, the length of the chuck head is 37 mm to 40 mm, the diameter of the chuck head is 20 mm to 22 mm, and the taper of the conical surface of the chuck head is 20° to 30°.

[0016] By adopting this technical solution, the length and diameter of the chuck head are rationally designed, ensuring clamping strength while reducing material usage and lowering manufacturing costs. The chuck head's conical circumferential surface tapers to 20° to 30°, enabling more effective deformation of the chuck head as it moves axially within the mounting hole at the chuck's axis, thereby better clamping tools such as drill bits and improving clamping stability and reliability.

[0017] Optionally, the outer peripheral surface of the connecting end of the chuck head has an external thread, and the bottom of the mounting hole of the chuck axis has a threaded hole that matches the connecting end of the chuck head. The connecting end of the chuck head is screwed into the threaded hole, and the thread size of the connecting end of the chuck head is M14×1.5mm or M16×1.5mm.

[0018] By adopting this technical solution, the outer circumference of the connecting end of the chuck head is provided with external threads, and the bottom of the mounting hole of the chuck axis is provided with a mating threaded hole, making the connection between the chuck head and the chuck axis more secure and reliable. This threaded connection not only improves the overall stability of the chuck structure but also facilitates assembly and disassembly operations and axial movement of the chuck head. Furthermore, the thread size of the connecting end of the chuck head enhances the connection strength while ensuring sufficient screwing length to prevent loosening caused by too short threads.

[0019] Optionally, a first limiting plane is further provided on the outer peripheral surface of the deformation end of the chuck head.

[0020] By adopting the above technical solution, tools such as a wrench are clamped on the first limiting plane, which makes it easy to rotate the chuck head and adjust the opening size of the clamping hole.

[0021] Optionally, the chuck axis is cylindrical, the total length of the chuck axis is between 50 mm and 60 mm, and the diameter of the chuck axis is between 20 mm and 25 mm.

[0022] By adopting this technical solution, the chuck axis has excellent rigidity and stability, while ensuring sufficient strength and durability, allowing it to withstand long-term use in various working environments without damage. In addition, this design facilitates connection with other components (such as extension rods), improving the assembly convenience and reliability of the entire chuck structure.

[0023] Optionally, the inner wall of the connecting hole has an internal thread for threaded engagement with the extension rod, and the bottom of the connecting hole is connected to the threaded hole; the aperture of the connecting hole is 10 mm.

[0024] By adopting the above technical solution, the inner wall of the connecting hole is provided with an internal thread, which can be firmly connected to the extension rod, ensuring the stability of the chuck structure during use. The overall structure is easy to manufacture, low in cost, and enhances the versatility and applicability of the chuck structure.

[0025] Optionally, a second limiting plane is further provided on the outer peripheral surface of the chuck axis.

[0026] By adopting the above technical solution, it is convenient to use a wrench or other tools to clamp on the second limiting plane for rotating or positioning the chuck axis.

[0027] Optionally, the inner wall of the mounting hole has a conical surface that matches the conical circumferential surface of the chuck head, and the taper of the conical surface is 20° to 30°.

[0028] By adopting this technical solution, the conical circumference of the chuck head closely aligns with the tapered surface of the mounting hole, ensuring that the chuck head deforms smoothly and accurately during axial movement, thereby firmly clamping tools such as drill bits. The tapered surface has a taper of 20° to 30°, which can reduce friction between the chuck head and the mounting hole while maintaining clamping force, making the chuck head screwed in and out smoother, improving operational convenience and reliability.

[0029] In summary, the chuck structure of the present application can be used in combination with extension rods of different lengths to meet a variety of different usage scenarios. The entire chuck structure is very convenient to assemble and use, and the connection is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure after the clamping structure and the extension rod are connected in this application.

[0031] Figure 2 It is a schematic cross-sectional view of the chuck axis in this application.

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the chuck head in this application.

[0033] Figure 4 It is a schematic diagram of the structure of the chuck head in this application when viewed from above.

[0034] In the picture:

[0035] 10. Chuck head; 11. Connecting end; 12. Deformation end; 13. Clamping hole; 14. External thread; 15. Conical circumference; 16. Deformation relief groove; 17. First limiting plane;

[0036] 20. Chuck axis; 21. Mounting hole; 22. Connecting hole; 23. Threaded hole; 24. Second limiting plane; 25. Internal thread;

[0037] 30. Extension rod. DETAILED DESCRIPTION

[0038] The following will be combined with the Figure 1 -Attached Figure 4 The technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention and do not represent all possible implementations. Those skilled in the art can fully combine the embodiments of the present invention to derive other embodiments without inventive work, and these embodiments are also within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a chuck structure of a cutting, milling and drilling tool provided in an embodiment of the present application includes a chuck head 10 and a chuck axis 20; the chuck head 10 is mounted on the chuck axis 20; one end of the chuck head 10 is a connecting end 11, and the other end is a deforming end 12, one end of the chuck axis 20 is provided with a mounting hole 21, and a threaded hole 23 is provided at the bottom of the mounting hole 21, and the outer peripheral surface of the connecting end 11 of the chuck head 10 has an external thread 14, the connecting end 11 of the chuck head 10 is located in the mounting hole 21 and extends into the threaded hole 23, and a threaded connection with the chuck axis 20 is achieved through the threaded hole 23; the deforming end 12 of the chuck head 10 is provided with an end surface Along the axially inward clamping hole 13, the outer diameter of the deformed end 12 of the chuck head 10 gradually increases from the end close to the connecting end 11 to the end away from the connecting end 11, thereby forming a conical peripheral surface 15. The outer peripheral surface of the deformed end 12 of the chuck head 10 is in contact with the wall of the mounting hole 21. The other end of the chuck axis 20 is provided with a connecting hole 22 for connecting the extension rod 30. The inner wall of the connecting hole 22 has an internal thread 25, which only occupies a portion of the entire connecting hole 22. The inner wall of the connecting hole 22 near the hole mouth is cylindrical and smooth. The end of the extension rod 30 also has a thread, thereby realizing a threaded connection between the chuck axis 20 and the chuck axis 20. The connecting hole 22, the threaded hole 23 and the mounting hole 21 are sequentially penetrated, so that the chuck axis 20 has a cylindrical structure, and the internal center is hollow along the axial direction. The diameter of the mounting hole 21 of the chuck axis 20 is larger than that of the connecting hole 22, and the diameter of the connecting hole 22 is larger than that of the threaded hole 23.

[0040] Reference Figure 3 and Figure 4As shown, the connection end 11 of the chuck head 10 is further provided with at least two deformation relief grooves 16 extending radially from the clamping hole 13 through the chuck head 10 to the conical circumferential surface 15. Preferably, there are four deformation relief grooves 16, evenly spaced along the circumference of the chuck head 10, forming a cross-shaped overall shape. This allows the chuck head 10 to deform evenly when subjected to pressure, thereby better clamping the tool shank. The clamping hole 13 is triangular in shape, designed to match the triangular shank of the tool, effectively limiting relative rotation between the tool and the chuck, and improving the stability and reliability of the clamping.

[0041] In the present application, the length of the chuck head 10 is 37mm to 40mm, the diameter of the chuck head 10 is 20mm to 22mm, and the taper of the conical surface 15 of the chuck head 10 is 20° to 30°; the total length of the chuck axis 20 is between 50mm and 60mm, and the diameter of the chuck axis 20 is between 20mm and 25mm. As a preferred embodiment, the length of the chuck head 10 is 38mm, the diameter of the chuck head 10 is 21mm, and the taper of the conical surface 15 of the chuck head 10 is 25°; the total length of the chuck axis 20 is between 55mm, the diameter of the chuck axis 20 is 22mm, the thread size of the connection end 11 of the chuck head 10 is M14×1.5mm or M16×1.5mm, and the diameter of the connection hole 22 is 10mm.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a first limiting plane 17 is also provided on the outer circumference of the deforming end 12 of the chuck head 10. There can be two or four first limiting planes 17, and the first limiting planes 17 are evenly spaced along the circumference of the chuck head 10. A tool such as a wrench is clamped on the first limiting plane 17 to facilitate the rotation of the chuck head 10 and the adjustment of the opening size of the clamping hole 13. A second limiting plane 24 is also provided on the outer circumference of the chuck axis 20. The second limiting plane 24 is arranged at one end of the chuck axis 20 close to the connecting hole 22. There can be two or four second limiting planes 24, and the second limiting planes 24 are evenly spaced along the circumference of the chuck axis 20; a tool such as a wrench is clamped on the second limiting plane 24 to rotate or position the chuck axis 20.

[0043] The working principle of this embodiment is as follows: the chuck structure of this application is used to clamp tools such as drill bits. The connection hole 22 of the chuck axis 20 is used to connect the extension rod 30. The extension rod 30 is usually a metal rod, one end of which is connected to the chuck of a mechanical device such as a handheld electric drill, and the other end is connected to the chuck axis 20, thereby extending the extension length of the drill bit and other tools, and is suitable for special working environments. The shank section of the drill bit and other tools is inserted into the clamping hole 13 of the chuck head 10. By rotating the chuck head 10, the chuck head 10 moves axially within the mounting hole 21 of the chuck axis 20. The conical circumference 15 of the chuck head 10 cooperates with the inner wall of the mounting hole 21 of the chuck axis 20, squeezing the deformable end 12 of the chuck head 10, which is deformed through the deformation relief groove 16, thereby firmly clamping and fixing the drill bit and other tools. When the drill bit and other tools need to be removed, the chuck head 10 is rotated in the opposite direction to loosen the drill bit and other tools, making it easy to remove.

[0044] The clamp structure of the present application can be used in combination with extension rods 30 of different lengths to meet a variety of different usage scenarios. The assembly and use of the entire clamp structure are very convenient, and the connection is stable and reliable.

[0045] The length and diameter of the chuck head 10 and chuck axis 20 of the present application are rationally designed, thereby ensuring clamping strength while reducing material usage and manufacturing costs. The conical surface 15 of the chuck head 10 is designed with a taper of 20° to 30°, which allows the chuck head 10 to deform more effectively when moving axially within the mounting hole 21 of the chuck axis 20, thereby better clamping a tool such as a drill bit and improving the stability and reliability of the clamping.

[0046] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A chuck structure for a cutting, milling, or drilling tool, comprising a chuck head (10) and a chuck axis (20); the chuck head (10) is mounted on the chuck axis (20); It is characterized by: One end of the chuck head (10) is a connecting end (11), and the other end is a deforming end (12); one end of the chuck axis (20) is provided with a mounting hole (21); the connecting end (11) of the chuck head (10) is located in the mounting hole (21) and is threadedly connected to the chuck axis (20); The deformable end (12) of the chuck head (10) is provided with a clamping hole (13) extending inwardly from the end face along its axial direction, and the outer diameter of the deformable end (12) of the chuck head (10) gradually increases from the end close to the connecting end (11) to the end away from the connecting end (11) to form a conical peripheral surface (15), and the connecting end (11) of the chuck head (10) is also provided with at least two deformation clearance grooves (16) extending from the clamping hole (13) along the chuck head (10) radially to the conical peripheral surface (15); the outer peripheral surface of the deformable end (12) of the chuck head (10) is in contact with the hole wall of the mounting hole (21); The other end of the chuck axis (20) is provided with a connection hole (22) for connecting with an extension rod (30).

2. The chuck structure of the cutting, milling and drilling tool according to claim 1, characterized in that: There are four deformation relief grooves (16), which are evenly spaced along the circumference of the chuck head (10) so that the deformation relief grooves (16) as a whole form a cross shape. The clamping hole (13) is triangular and is used to match the triangular handle of the tool to limit the circumferential rotation between the two.

3. The chuck structure of the cutting, milling and drilling tool according to claim 1 or 2, characterized in that: The length of the chuck head (10) is 37 mm to 40 mm, the diameter of the chuck head (10) is 20 mm to 22 mm, and the taper of the conical circumferential surface (15) of the chuck head (10) is 20° to 30°.

4. The chuck structure of the cutting, milling and drilling tool according to claim 1, characterized in that: The outer peripheral surface of the connecting end (11) of the chuck head (10) has an external thread (14), and the bottom of the mounting hole (21) of the chuck axis (20) has a threaded hole (23) that matches the connecting end (11) of the chuck head (10), and the connecting end (11) of the chuck head (10) is screwed into the threaded hole (23), and the thread size of the connecting end (11) of the chuck head (10) is M14×1.5mm or M16×1.5mm.

5. The chuck structure of the cutting, milling and drilling tool according to claim 4, characterized in that: A first limiting plane (17) is also provided on the outer peripheral surface of the deforming end (12) of the chuck head (10).

6. The chuck structure of the cutting, milling and drilling tool according to claim 1, characterized in that: The chuck axis (20) is cylindrical, the total length of the chuck axis (20) is between 50 mm and 60 mm, and the diameter of the chuck axis (20) is between 20 mm and 25 mm.

7. The chuck structure of the cutting, milling and drilling tool according to claim 4, characterized in that: The inner wall of the connecting hole (22) is provided with an internal thread (25) for threaded engagement with the extension rod (30), and the bottom of the connecting hole (22) is connected to the threaded hole (23); the hole diameter of the connecting hole (22) is 10 mm.

8. The chuck structure of the cutting, milling and drilling tool according to claim 6, characterized in that: A second limiting plane (24) is also provided on the outer peripheral surface of the chuck axis (20).

9. The chuck structure of the cutting, milling and drilling tool according to claim 1, characterized in that: The inner wall of the mounting hole (21) has a conical surface that matches the conical peripheral surface (15) of the chuck head (10), and the taper of the conical surface is 20° to 30°.

Images