A taper reamer for reaming a taper hole

Abstract

This utility model discloses a conical reamer for reaming conical holes, relating to the field of conical reamer technology. It includes a reamer body, one end of which is provided with a mounting joint. The mounting joint has multiple annular grooves, each containing a steel ball. A tailstock sleeve is provided at the connecting end of the mounting joint. The outer wall of the joint core has a groove matching the steel ball. A sliding locking sleeve is threadedly connected to the tailstock sleeve via a fastening locking sleeve. This utility model achieves easy assembly and disassembly of the conical reamer through modular design and threaded connection. The radial locking design of the steel ball and groove, combined with axial displacement control of the sliding locking sleeve, forms a one-click locking structure, enabling "push-pull" quick connection / disassembly. This design allows for quick and convenient assembly and disassembly of the entire reamer when maintenance or component replacement is required, greatly improving work efficiency and ease of use.

Description

Technical Field

[0001] This utility model relates to the field of conical reamers, specifically to a conical reamer for reaming conical holes. Background Technology

[0002] A conical reamer is a rotary finishing tool specifically designed for reaming conical holes. It consists of a roughing reamer and a finishing reamer, used for roughing and finishing conical holes respectively. Conical holes machined by a conical reamer have high precision and low surface roughness. Conical reamers are widely used in the manufacture of mechanical parts that require the machining of conical holes. They are particularly suitable for machining internal conical holes with small diameters and high precision requirements, such as tapered pin holes and Morse taper holes.

[0003] When existing conical reamers need to be installed on a lathe, they are usually fixed in the tailstock sleeve of the lathe using bolts, nuts or other fasteners. Fixing with bolts, nuts and other fasteners requires multiple steps, the installation process is cumbersome and requires high operational precision, so the whole installation process may take a long time.

[0004] For example, the patented high-strength precision reamer mounting structure with easy disassembly and assembly, as disclosed in patent CN219881826U, has a fixing groove on the side wall of the mounting post. The pin is inserted into the fixing groove under the elasticity of the second spring. The lower end of the pin has a threaded groove, and one end of the pin can be fixedly connected to the adjusting plate by bolts, making it easy for the mounting post to be inserted or pulled out of the mounting sleeve. However, it is still necessary to tighten two bolts to fix one end of the pin to the threaded hole of the adjusting plate near the mounting sleeve. Tightening the bolts still requires a certain amount of time and effort. When frequent reamer replacement or a large number of processing tasks are required, this mounting method may still reduce production efficiency and increase the complexity of installation.

[0005] Therefore, it is necessary to solve the above problems by providing a conical reamer for reaming conical holes. Utility Model Content

[0006] The purpose of this invention is to provide a conical reamer for reaming conical holes, so as to solve the problem that conical reamers are inconvenient to disassemble and assemble, requiring multiple steps and complicated installation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a conical reamer for reaming conical holes, comprising a reamer body, one end of which is provided with an installation joint, a sliding locking sleeve is sleeved on the outside of the installation joint, a return spring is provided inside the sliding locking sleeve, the installation joint has multiple annular grooves, each annular groove contains a steel ball, the connecting end of the installation joint is provided with a tailstock sleeve, one end of the tailstock sleeve inserted into the installation joint is provided with a connector core, the tailstock sleeve contains an axially movable male connector, the outer wall of the connector core is provided with a groove matching the steel ball, and the sliding locking sleeve and the tailstock sleeve are connected by a fastening locking sleeve thread.

[0008] Preferably, the inner wall of the sliding lock sleeve is provided with a protrusion at one end, and the return spring is sleeved on the outside of the mounting joint, with its two ends abutting against the protrusion and the limiting step of the mounting joint, respectively. This design allows the sliding lock sleeve to slide stably on the mounting joint, and automatically reset by the elastic force of the return spring after being subjected to external force, ensuring the position accuracy of the lock sleeve and the convenience of operation.

[0009] Preferably, the width of the annular groove is matched with the diameter of the steel ball according to the H7 / g6 tolerance, with a fitting clearance of 0.003-0.024mm, and the depth of the annular groove is greater than 1.2 times the radius of the steel ball. This design ensures that the steel ball can roll freely in the annular groove while maintaining stable positioning accuracy.

[0010] Preferably, a first bracket is fixedly provided on the inner wall of the mounting joint, and a first slide rod is slidably arranged in the first bracket. One end of the first slide rod is connected to a female connector, and a first spring is sleeved on the first slide rod. This design allows the first slide rod to slide stably in the first bracket, and the elastic force of the first spring can realize the reset or buffer function, which helps to protect the female connector and the first slide rod from damage by excessive impact force.

[0011] Preferably, the two ends of the first spring abut against the side wall of the first bracket and the side wall of the female connector, respectively. The elastic force of the first spring can ensure that the first slide rod and the female connector maintain a certain contact pressure when stationary.

[0012] Preferably, the tailstock sleeve is provided with a second bracket, and a second slide rod is slidably arranged in the second bracket. One end of the second slide rod is connected to a male connector, and a second spring is sleeved on the second slide rod. This design realizes the stable sliding and reset or buffering function of the second slide rod, protecting the male connector and the second slide rod from damage.

[0013] Preferably, the two ends of the second spring abut against the side wall of the second bracket and the male connector, respectively, and the elastic force of the second spring can ensure that the second slide rod and the male connector maintain a certain contact pressure when stationary.

[0014] Preferably, the outer wall of the sliding locking sleeve is provided with a first external thread, and the outer wall of the tailstock sleeve is provided with a second external thread. A fastening locking sleeve is provided outside the first and second external threads. The internal thread of the fastening locking sleeve, together with the first external thread of the sliding locking sleeve and the second external thread of the tailstock sleeve, forms a threaded locking structure. This design helps to ensure the stability of the connection between the installation joint and the tailstock sleeve, prevents loosening under vibration or impact, and further improves the stability of the connection.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. This utility model achieves easy disassembly and assembly of the conical reamer through modular design and threaded connection. It adopts a radial locking design of steel balls and grooves, combined with axial displacement control of sliding lock sleeve, to form a one-click locking structure, realizing "push-pull" quick connection / separation. This design allows the entire reamer to be quickly and conveniently disassembled and assembled when maintenance or replacement of parts is required, greatly improving work efficiency and ease of use.

[0017] 2. This utility model further improves the stability of the connection through the design of the fastening locking sleeve. The internal thread of the fastening locking sleeve, together with the first external thread of the sliding locking sleeve and the second external thread of the tailstock sleeve, form a threaded locking structure. This structure not only ensures the tightness of the connection, but also effectively prevents loosening under vibration or impact, ensuring the stability and reliability of the entire reamer during operation, thereby improving processing quality and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded three-dimensional structural diagram of the mounting connector and tailstock sleeve of this utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the steel ball and protrusion of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the No. 2 connector of this utility model;

[0022] Figure 5 This is a front-view three-dimensional structural diagram of the female and male connectors of this utility model.

[0023] Figure 6 This is a three-dimensional structural diagram of the No. 1 and No. 2 external threads of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Reamer body; 2. Mounting connector; 3. Sliding locking sleeve; 4. Return spring; 5. Annular groove; 6. Steel ball; 7. Bracket No. 1; 8. Slide rod No. 1; 9. Female connector; 10. Spring No. 1; 11. Tailstock sleeve; 12. Connector core; 13. Bracket No. 2; 14. Slide rod No. 2; 15. Male connector; 16. Spring No. 2; 17. Groove; 18. External thread No. 1; 19. External thread No. 2; 20. Fastening locking sleeve; 21. Internal thread; 22. Protrusion. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] The components of the present invention embodiments described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] This utility model provides, for example Figure 1-6 The conical reamer shown includes a reamer body 1, with a mounting joint 2 at one end of the reamer body 1. A sliding locking sleeve 3 is fitted around the mounting joint 2, and a return spring 4 is installed inside the sliding locking sleeve 3. The mounting joint 2 has multiple annular grooves 5, and each annular groove 5 contains a steel ball 6. A tailstock sleeve 11 is provided at the connecting end of the mounting joint 2. A connector core 12 is provided at one end of the tailstock sleeve 11 that is inserted into the mounting joint 2. An axially movable male connector 15 is provided inside the tailstock sleeve 11. The outer wall of the connector core 12 has a groove 17 that matches the steel ball 6.

[0030] A protrusion 22 is provided at one end of the inner wall of the sliding lock sleeve 3. The return spring 4 is sleeved on the outside of the mounting joint 2, with its two ends abutting against the protrusion 22 and the limiting step of the mounting joint 2, respectively. The groove width of the annular groove 5 is matched with the diameter of the steel ball 6 according to the H7 / g6 tolerance, with a clearance of 0.003-0.024mm. The depth of the annular groove 5 is greater than 1.2 times the radius of the steel ball 6. A first bracket 7 is fixedly provided on the inner wall of the mounting joint 2. A first sliding rod 8 is slidably arranged in the first bracket 7. One end of the slide rod 8 is connected to a female connector 9. A spring 10 is fitted on the slide rod 8. The two ends of the spring 10 abut against the side wall of the support 7 and the side wall of the female connector 9, respectively. A second support 13 is provided inside the tail sleeve 11. A second slide rod 14 is slidably arranged inside the second support 13. One end of the second slide rod 14 is connected to a male connector 15. A spring 16 is fitted on the slide rod 14. The two ends of the spring 16 abut against the side wall of the support 13 and the male connector 15, respectively.

[0031] In this embodiment, the protrusion 22 on the inner wall of the sliding lock sleeve 3 cooperates with the return spring 4 to form an automatic reset system. When an axial thrust is applied, the sliding lock sleeve 3 can compress the return spring 4 and move it by 5-8 mm to release the lock of the steel ball 6. After the external force is removed, the return spring 4 pushes the sliding lock sleeve 3 to accurately reset, ensuring that it automatically returns to the locked state after each disassembly. The steel ball 6 cooperates with the annular groove 5 with a depth of 1.2 times the radius of the steel ball 6, which not only ensures that the steel ball 6 rolls flexibly, but also prevents it from falling out radially.

[0032] The sliding locking sleeve 3 and the tailstock sleeve 11 are connected by a fastening locking sleeve 20. The outer wall of the sliding locking sleeve 3 is provided with a first external thread 18, and the outer wall of the tailstock sleeve 11 is provided with a second external thread 19. The fastening locking sleeve 20 is provided outside the first external thread 18 and the second external thread 19. The internal thread 21 of the fastening locking sleeve 20 forms a threaded locking structure with the first external thread 18 of the sliding locking sleeve 3 and the second external thread 19 of the tailstock sleeve 11.

[0033] In this embodiment, after the sliding locking sleeve 3 and the tailstock sleeve 11 are initially locked together by the engagement of the steel ball 6 and the groove 17, the locking sleeve 20 is rotated to gradually engage its internal thread 21 with the first external thread 18 and the second external thread 19 until the predetermined tightening torque is reached. At this time, the sliding locking sleeve 3 and the tailstock sleeve 11 are firmly connected together, ensuring the tightness and stability of the connection. This structure can effectively resist vibration and impact, and prevent the connection from loosening or falling off.

[0034] Working principle of this utility model:

[0035] Refer to the instruction manual appendix Figure 1-6When using this utility model, when the reamer body 1 needs to be disassembled, first release the threaded lock of the fastening sleeve 20, rotate the fastening sleeve 20 counterclockwise downwards, so that the fastening sleeve 20 disengages from the first external thread 18 and the second external thread 19 on the outer wall of the sliding sleeve 3 and the tailstock sleeve 11. At this time, the threaded connection between the sliding sleeve 3 and the tailstock sleeve 11 is released. After the fastening sleeve 20 is released, pull the sliding sleeve 3 backwards to the limit position. At this time, the steel ball 6 is released from the constraint of the groove 17. At this time, the tailstock sleeve 11 can be separated by pulling it. No tools are needed throughout the process.

[0036] When the reamer body 1 needs to be installed, first align the connector core 12 of the tailstock sleeve 11 with the insertion port of the installation connector 2, keep the sliding locking sleeve 3 in the initial position and the return spring 4 fully extended, then apply axial thrust to push the tailstock sleeve 11, the steel ball 6 slides into the groove 17 along the conical surface of the connector core 12, accompanied by a "click" sound indicating that it is in place, the return spring 4 automatically pushes the sliding locking sleeve 3 to reset, completing the mechanical locking of the steel ball 6, and then rotate clockwise to tighten the locking sleeve 20, the internal thread 21 simultaneously engages the first external thread 18 and the second external thread 19, continue to rotate until the predetermined tightening torque is reached, ensuring that the sliding locking sleeve 3 and the tailstock sleeve 11 are firmly connected together;

[0037] The design allows for installation in two steps ("push-rotate") and disassembly in two steps ("pull-rotate"), making it simple and convenient to operate.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] 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 conical reamer for reaming conical holes, comprising a reamer body (1), characterized in that: The reamer body (1) is provided with an installation joint (2) at one end. The installation joint (2) is fitted with a sliding locking sleeve (3). The sliding locking sleeve (3) is provided with a return spring (4) inside. The installation joint (2) is provided with multiple annular grooves (5). Each annular groove (5) is provided with a steel ball (6). The connection end of the installation joint (2) is provided with a tailstock sleeve (11). The end of the tailstock sleeve (11) inserted into the installation joint (2) is provided with a connector core (12). The tailstock sleeve (11) is provided with an axially movable male connector (15). The outer wall of the connector core (12) is provided with a groove (17) that matches the steel ball (6). The sliding locking sleeve (3) and the tailstock sleeve (11) are connected by a fastening locking sleeve (20) threaded connection.

2. A conical reamer for reaming conical holes according to claim 1, characterized in that: The inner wall of the sliding lock sleeve (3) is provided with a protrusion (22) at one end, and the reset spring (4) is sleeved on the outside of the mounting joint (2), with its two ends abutting against the protrusion (22) and the limiting step of the mounting joint (2) respectively.

3. A conical reamer for reaming conical holes according to claim 1, characterized in that: The width of the annular groove (5) is matched with the diameter of the steel ball (6) according to the H7 / g6 tolerance, the fitting gap is 0.003-0.024mm, and the depth of the annular groove (5) is greater than 1.2 times the radius of the steel ball (6).

4. A conical reamer for reaming conical holes according to claim 1, characterized in that: The inner wall of the mounting joint (2) is fixedly provided with a bracket (7), and a sliding rod (8) is slidably arranged inside the bracket (7). One end of the sliding rod (8) is connected to a female connector (9), and a spring (10) is sleeved on the sliding rod (8).

5. A conical reamer for reaming conical holes according to claim 4, characterized in that: The two ends of the first spring (10) abut against the side wall of the first bracket (7) and the side wall of the female connector (9), respectively.

6. A conical reamer for reaming conical holes according to claim 1, characterized in that: The tailstock sleeve (11) is provided with a second bracket (13), and a second slide rod (14) is slidably arranged inside the second bracket (13). One end of the second slide rod (14) is connected to a male connector (15), and a second spring (16) is sleeved on the second slide rod (14).

7. A conical reamer for reaming conical holes according to claim 6, characterized in that: The two ends of the second spring (16) abut against the side walls of the second bracket (13) and the male connector (15), respectively.

8. A conical reamer for reaming conical holes according to claim 1, characterized in that: The outer wall of the sliding sleeve (3) is provided with a first external thread (18), and the outer wall of the tail sleeve (11) is provided with a second external thread (19). A fastening sleeve (20) is provided outside the first external thread (18) and the second external thread (19). The internal thread (21) of the fastening sleeve (20) forms a threaded locking structure with the first external thread (18) of the sliding sleeve (3) and the second external thread (19) of the tail sleeve (11).

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