An assembly collet chuck

By employing a double-threaded connection structure and locking screw design in the collet chuck, the problem of component waste caused by the one-piece collet chuck structure is solved, enabling flexible disassembly and replacement of the chuck components, reducing usage costs and improving stability.

CN224406950UActive Publication Date: 2026-06-26DONGGUAN DERUI PRECISION MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN DERUI PRECISION MASCH CO LTD
Filing Date
2025-05-30
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The existing collet chuck has a one-piece structure, which means that the whole chuck is scrapped when it is damaged, resulting in waste of parts and difficulty in flexibly replacing the damaged parts.

Method used

The double-threaded connection structure, through the threaded connection between the lower threaded ring and the lower annular threaded groove, and the upper threaded ring and the upper annular threaded groove, combined with the design of the locking screw, achieves a stable connection between the connecting seat and the chuck seat, and allows for flexible disassembly and replacement of the chuck seat.

Benefits of technology

It enables flexible disassembly and replacement of chuck components when damaged, reduces waste of parts, lowers usage costs, and improves the stability and flexibility of assembled collet chucks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of assembly collet chuck, including connecting seat, the upper portion of the connecting seat is equipped with chuck holder, the outer surface of the chuck holder is threadedly connected with threaded locking sleeve, the inside of the chuck holder is equipped with elastic collet, the inside of the chuck holder is equipped with cutter head, the inner ring of the elastic collet and the outer surface of cutter head are in close contact, the upper surface of the connecting seat is provided with lower annular screw groove, the bottom of the chuck holder is fixedly connected with lower threaded ring, the bottom of the chuck holder is provided with upper annular screw groove, the outer surface of the connecting seat is fixedly connected with upper threaded ring, the outer surface of the lower threaded ring and the inner wall of lower annular screw groove are threadedly connected, the outer surface of the upper threaded ring and the inner wall of upper annular screw groove are threadedly connected.This assembly collet chuck, by screwing relevant threaded components, damaged parts such as chuck holder can be flexibly disassembled for replacement, avoid because local damage leads to entire collet chuck scrap, reduce use cost.
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Description

Technical Field

[0001] This utility model relates to the field of collet chucks, and in particular to an assembled collet chuck. Background Technology

[0002] Collet chucks are a type of precision clamping tool commonly used in the machining field. They are mainly used to hold cutting tools such as drill bits, milling cutters, or workpieces to achieve high-precision positioning and fixation. Their core structure is the collet, which is used in conjunction with the chuck body. They are widely used in machine tools, woodworking machinery, and other equipment.

[0003] Currently, most collet chucks are one-piece structures, making them difficult to assemble and connect. When the chuck is damaged, the entire collet chuck often becomes unusable, leading to the scrapping of the entire chuck and wasting parts. To address this issue, we propose an assembly method for collet chucks. Utility Model Content

[0004] The purpose of this utility model is to provide an assembly collet chuck to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An assembly collet chuck includes a connecting base, a chuck seat above the connecting base, a threaded locking sleeve threaded to the outer surface of the chuck seat, an elastic collet inside the chuck seat, a cutter head inside the chuck seat, the inner ring of the elastic collet in close contact with the outer surface of the cutter head, a lower annular threaded groove on the upper surface of the connecting base, a lower threaded ring fixedly connected to the bottom surface of the chuck seat, an upper annular threaded groove on the bottom surface of the chuck seat, and an upper threaded ring fixedly connected to the outer surface of the connecting base.

[0007] In a further embodiment, the outer surface of the lower threaded ring is threadedly connected to the inner wall of the lower annular threaded groove, and the outer surface of the upper threaded ring is threadedly connected to the inner wall of the upper annular threaded groove.

[0008] In a further embodiment, the inner top wall of the upper annular screw groove has two arc-shaped holes, and each of the two arc-shaped holes is provided with a locking screw. The upper surface of the upper threaded ring has two threaded grooves, and the outer surfaces of the two locking screws are respectively threaded to the inner walls of the two threaded grooves.

[0009] In a further embodiment, the bottom end of the connector is provided with a connecting end, and the outer surface of the connecting end is provided with a plurality of connecting holes.

[0010] In a further embodiment, a hexagonal rotating plate is fixedly connected to the outer surface of the threaded locking sleeve, and the outer surface of the hexagonal rotating plate is provided with anti-slip texture.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention forms a double connection structure by connecting the lower threaded ring on the bottom surface of the collet seat to the lower annular threaded groove at the connecting seat, and by engaging the upper threaded ring on the surface of the connecting seat with the annular threaded groove on the bottom surface of the collet seat. Furthermore, by using a locking screw to pass through the arc-shaped hole and screw into the threaded groove, a stable connection between the connecting seat and the collet seat is ensured. In case of damage to the collet components, loosening the relevant threaded parts allows for flexible disassembly and replacement of the damaged parts, preventing the entire collet from being scrapped due to partial damage. This significantly reduces component waste and lowers operating costs. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of the assembled collet chuck, viewed from the front.

[0014] Figure 2 A cross-sectional view taken from the front of the assembled collet chuck;

[0015] Figure 3 A top-view three-dimensional structural diagram of the collet holder in the assembled collet chuck;

[0016] Figure 4 For assembling collet chucks Figure 2 A magnified structural diagram of part A in the middle.

[0017] In the diagram: 1. Connecting seat; 2. Chuck seat; 3. Threaded locking sleeve; 4. Elastic collet; 5. Tool head; 6. Lower annular threaded groove; 7. Lower threaded ring; 8. Upper threaded ring; 9. Threaded groove; 10. Arc-shaped hole; 11. Locking screw; 12. Upper annular threaded groove; 13. Connecting end; 14. Connecting hole; 15. Hexagonal rotating plate. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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] Please see Figures 1-4In this utility model, an assembled collet chuck includes a connecting seat 1, a chuck seat 2 above the connecting seat 1, a threaded locking sleeve 3 threadedly connected to the outer surface of the chuck seat 2, an elastic collet 4 inside the chuck seat 2, and a tool head 5 inside the chuck seat 2. The inner ring of the elastic collet 4 is in close contact with the outer surface of the tool head 5. A lower annular threaded groove 6 is formed on the upper surface of the connecting seat 1, a lower threaded ring 7 is fixedly connected to the bottom surface of the chuck seat 2, an upper annular threaded groove 12 is formed on the bottom surface of the chuck seat 2, and an upper threaded ring 8 is fixedly connected to the outer surface of the connecting seat 1. When installing the tool head 5, it is placed inside the chuck seat 2. By tightening the threaded locking sleeve 3 downwards, pressure is applied to the elastic collet 4 using the threaded locking sleeve 3, which allows the inner ring of the elastic collet 4 to tightly fit against the surface of the tool head 5, thus firmly clamping the tool and ensuring that the tool is stable and does not wobble during processing, thereby ensuring processing accuracy.

[0022] In a further embodiment, the outer surface of the lower threaded ring 7 is threadedly connected to the inner wall of the lower annular threaded groove 6, and the outer surface of the upper threaded ring 8 is threadedly connected to the inner wall of the upper annular threaded groove 12. The inner top wall of the upper annular threaded groove 12 has two arc-shaped holes 10, and each of the two arc-shaped holes 10 is provided with a locking screw 11. The upper surface of the upper threaded ring 8 has two threaded grooves 9, and the outer surfaces of the two locking screws 11 are respectively threadedly connected to the inner walls of the two threaded grooves 9. Through the threaded connection between the lower threaded ring 7 and the lower annular threaded groove 6, and the threaded connection between the upper annular threaded groove 12 and the upper threaded ring 8, a double threaded connection can be made between the connecting seat 1 and the chuck seat 2, improving the firmness of the assembly connection. In addition, by utilizing the cooperation of the arc-shaped holes 10, the locking screws 11 and the threaded grooves 9, the connecting seat 1 and the chuck seat 2 can be firmly locked and fixed, ensuring the firmness after assembly.

[0023] In a further embodiment, the bottom end of the connecting seat 1 is provided with a connecting end 13, and the outer surface of the connecting end 13 is provided with a plurality of connecting holes 14. The outer surface of the threaded locking sleeve 3 is fixedly connected with a hexagonal rotating plate 15, and the outer surface of the hexagonal rotating plate 15 is provided with anti-slip texture. Through the setting of the connecting end 13 and the plurality of connecting holes 14, the entire collet chuck can be installed on a machine tool or other equipment by means of bolts or other connecting parts to realize power transmission and processing operation. The setting of the hexagonal rotating plate 15 facilitates the rotation of the threaded locking sleeve 3, making the rotation of the threaded locking sleeve 3 more flexible and convenient.

[0024] The working principle of this utility model is as follows: First, the lower threaded ring 7 on the bottom surface of the collet seat 2 is rotated inside the lower annular threaded groove 6, while the upper threaded ring 8 on the surface of the connecting seat 1 is rotated inside the upper annular threaded groove 12. This ensures that the connecting seat 1 and the collet seat 2 are firmly connected, forming the basic frame of the collet chuck. Then, the locking screw 11 is passed through the arc-shaped hole 10 and rotated into the threaded groove 9, which can firmly lock the connecting seat 1 and the collet seat 2. Furthermore, if the collet component is damaged, the collet seat 2 can be flexibly disassembled.

[0025] When installing the tool head 5, place the tool head 5 inside the chuck seat 2, and then tighten the threaded locking sleeve 3 downwards. This allows the threaded locking sleeve 3 to apply pressure to the elastic collet 4, causing its inner ring to tightly fit against the surface of the tool head 5, thereby firmly clamping the tool and ensuring that the tool is stable and does not wobble during the machining process.

[0026] 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.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An assembled collet chuck, characterized by: The system includes a connecting seat (1), a chuck seat (2) above the connecting seat (1), a threaded locking sleeve (3) threadedly connected to the outer surface of the chuck seat (2), an elastic collet (4) inside the chuck seat (2), a cutting head (5) inside the chuck seat (2), the inner ring of the elastic collet (4) in close contact with the outer surface of the cutting head (5), a lower annular threaded groove (6) on the upper surface of the connecting seat (1), a lower threaded ring (7) fixedly connected to the bottom surface of the chuck seat (2), and an upper annular threaded groove (12) on the bottom surface of the chuck seat (2). The outer surface of the connecting seat (1) is fixedly connected with an upper threaded ring (8). The outer surface of the lower threaded ring (7) is threadedly connected to the inner wall of the lower annular threaded groove (6). The outer surface of the upper threaded ring (8) is threadedly connected to the inner wall of the upper annular threaded groove (12). The inner top wall of the upper annular threaded groove (12) has two arc-shaped holes (10). The two arc-shaped holes (10) are each provided with a locking screw (11). The upper surface of the upper threaded ring (8) has two threaded grooves (9). The outer surfaces of the two locking screws (11) are threadedly connected to the inner walls of the two threaded grooves (9) respectively.

2. A collet chuck according to claim 1, wherein: The bottom end of the connector (1) is provided with a connecting end (13), and the outer surface of the connecting end (13) is provided with a plurality of connecting holes (14).

3. The collet chuck of claim 1 wherein: The outer surface of the threaded locking sleeve (3) is fixedly connected to a hexagonal rotating plate (15), and the outer surface of the hexagonal rotating plate (15) is provided with anti-slip texture.