A four-toothed special star top hole for large diameter cylindrical milling cutter

By designing a special four-tooth plum blossom socket for large-diameter cylindrical end mills, and utilizing a combination structure of Morse taper shank socket base, plum blossom socket, and guide center, the problem of low machining accuracy and efficiency of end mills under traditional clamping methods is solved, achieving stability and fast clamping, and improving machining efficiency.

CN224406459UActive Publication Date: 2026-06-26GUIYANG YONGZE CNC TOOLS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIYANG YONGZE CNC TOOLS CO LTD
Filing Date
2025-07-30
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional clamping methods result in reduced machining accuracy and low efficiency for large-diameter cylindrical milling cutters. Furthermore, the clamping process is cumbersome, increasing the difficulty and physical exertion of the workers.

Method used

Design a four-tooth pendulum socket for large-diameter cylindrical end mills, including a Morse taper shank socket base, a pendulum socket, a guide tip, a compression spring, and an internal hexagon screw. The pendulum socket matches the end mill with its four-tooth groove, the guide tip is positioned by a 60° cone angle, and the compression spring provides axial elastic preload to ensure the stability of the end mill and quick clamping.

Benefits of technology

It improves machining accuracy, simplifies the clamping process, reduces the difficulty of workers' work, increases cutting efficiency, and shortens machining time.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to lathe processing technical field discloses a four tooth plum blossom top socket special for large diameter cylindrical milling cutter, include: morse short taper handle top socket base, its inside is equipped with axial compression spring cavity, plum blossom top socket, coaxial sleeve is located in morse short taper handle top socket base front end, guide center, and the activity is penetrated plum blossom top socket center, and stretches into morse short taper handle top socket base, compression spring, set up in compression spring cavity, both ends respectively abut guide center tail end and compression spring cavity bottom. The four tooth plum blossom top socket structure of setting can effectively improve the machining precision. Through the four tooth plum blossom groove of plum blossom top socket front end and the end tooth shape matching of large diameter cylindrical milling cutter, ensure the stability and accuracy of clamping, thereby significantly reduce the radial runout, improve the machining precision.
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Description

Technical Field

[0001] This utility model relates to the field of lathe machining technology, specifically to a four-tooth plum blossom top socket for a large-diameter cylindrical milling cutter. Background Technology

[0002] Traditional machining methods for large-diameter cylindrical end mills often face several challenges, particularly in ensuring machining accuracy and improving cutting efficiency. For cylindrical end mills with diameters between 25 and 52 mm, workers typically use a clamping method where one end is secured with a chuck, and the other end is pushed into the center hole of the end mill via the tailstock center of the lathe. However, this clamping method has the following problems:

[0003] Because the contact between the chuck and tailstock is not precise enough in traditional clamping methods, radial runout is prone to occur, which reduces machining accuracy.

[0004] Workers need to spend more time and effort adjusting and fixing the milling cutter, which increases the difficulty of the work and physical exertion.

[0005] The cumbersome clamping and adjustment process results in low efficiency of the entire machining process, especially when machining large-diameter milling cutters, which takes a long time.

[0006] Therefore, based on the above-mentioned technical problems, it is necessary for those skilled in the art to develop a special four-tooth plum blossom top socket for large-diameter cylindrical end mills. Utility Model Content

[0007] The purpose of this invention is to provide a four-tooth plum blossom top socket for large-diameter cylindrical end mills to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A technical solution for a four-tooth perforated socket for large-diameter cylindrical end mills includes:

[0010] The Morse taper shank top socket base has an axial compression spring cavity inside;

[0011] The plum blossom-shaped socket is coaxially sleeved at the front end of the Morse short cone shank socket base;

[0012] The guide tip moves through the center of the plum blossom-shaped socket and extends into the base of the Morse taper shank socket;

[0013] A compression spring is disposed inside the compression spring cavity, with its two ends respectively abutting the tail end of the guide tip and the bottom of the compression spring cavity;

[0014] The safety clamp is fitted onto the interface between the Morse short cone shank top socket base and the plum blossom top socket.

[0015] The hex socket screw is used to lock the safety clamp to fix the Torx socket and the Morse taper shank socket base.

[0016] As a preferred technical solution, the front end face of the plum blossom-shaped socket is provided with a four-tooth plum blossom-shaped groove, which is used to match the end tooth profile of a large-diameter cylindrical milling cutter.

[0017] As a preferred technical solution, the front end of the guide tip has a 60° conical angle structure, which is used to position the center hole of the cylindrical milling cutter.

[0018] As a preferred technical solution, the compression spring provides axial elastic preload, so that the guide tip always tends to extend towards the front end of the plum blossom socket.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention relates to a four-tooth plum blossom-shaped recess for large-diameter cylindrical end mills. The four-tooth plum blossom-shaped recess structure effectively improves machining accuracy. By matching the four-tooth plum blossom-shaped groove at the front end of the recess with the end tooth profile of the large-diameter cylindrical end mill, the stability and accuracy of clamping are ensured, thereby significantly reducing radial runout and improving machining accuracy.

[0021] Furthermore, this invention significantly simplifies the clamping and adjustment process, reducing the difficulty and physical exertion for workers. The front end of the guide tip adopts a 60° conical angle structure design, which can accurately position the center hole of the cylindrical milling cutter, making the clamping process faster and more convenient.

[0022] Meanwhile, the axial elastic preload provided by the compression spring ensures that the guide tip always tends to extend towards the front end of the spline socket. This structural design not only enhances clamping stability but also helps improve cutting efficiency. The entire machining process thus becomes more efficient, especially when machining large-diameter end mills, significantly reducing machining time. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a four-tooth plum blossom top socket for a large-diameter cylindrical milling cutter.

[0024] In the attached diagram, the following are the reference numerals: 1. Morse taper shank base; 11. Compression spring cavity; 2. Plexicon socket; 3. Guide center; 4. Compression spring; 5. Safety clamp; 6. Socket head screw. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples.

[0026] like Figure 1 As shown, this utility model provides a technical solution for a four-tooth perforated socket for large-diameter cylindrical end mills: it includes a Morse taper shank socket base 11, the Morse taper shank socket base 11 having an axial compression spring cavity 11 inside. The Morse taper shank socket base 11 can be made of high-strength steel to ensure sufficient rigidity and durability.

[0027] The plum blossom-shaped socket 2 is coaxially sleeved on the front end of the Morse taper shank socket base 1. The front end face of the plum blossom-shaped socket 2 is designed with four-tooth plum blossom-shaped grooves. The size and shape of these grooves match the end tooth profile of the large-diameter cylindrical milling cutter to ensure the stability and accuracy of the milling cutter during machining.

[0028] The guide tip 3 moves through the center of the plum blossom socket 2 and extends into the Morse taper shank socket base 1. The front end of the guide tip 3 is designed with a 60° tapered angle structure to accurately position the center hole of the cylindrical end mill, ensuring the correct position of the end mill during machining.

[0029] The compression spring 4 is disposed inside the compression spring cavity 11, with its two ends abutting against the tail end of the guide tip 3 and the bottom of the compression spring cavity 11, respectively. The function of the compression spring 4 is to provide axial elastic preload, so that the guide tip 3 always tends to extend towards the front end of the plum blossom socket 2, thereby enhancing the stability of the clamping.

[0030] The safety clamp 5 is fitted onto the interface between the Morse taper shank top socket base 1 and the plum blossom top socket 2 to fix the relative position of the plum blossom top socket 2 and the Morse taper shank top socket base 1, preventing relative movement during processing.

[0031] The hex socket screw 6 is used to lock the safety clamp 5, thereby securing the Torx socket 2 to the Morse taper shank socket base 1. The use of the hex socket screw 6 simplifies the clamping and adjustment process, making operation more convenient.

[0032] In practical applications, the Morse taper shank socket base 1 is first installed on the lathe spindle. Then, the pendulum socket 2 is fitted onto the front end of the base 1, and the safety clamp 5 is secured with an Allen screw 6. Next, the end of a large-diameter cylindrical end mill is inserted into the four-toothed pendulum-shaped groove of the pendulum socket 2, and the center hole of the end mill is precisely positioned by the 60° tapered structure of the guide tip 3. Finally, the axial elastic preload provided by the compression spring 4 ensures a tight fit between the guide tip 3 and the pendulum socket 2, thereby maintaining the stability and accuracy of the end mill during machining.

[0033] Through the above embodiments, the four-tooth plum blossom top socket for large-diameter cylindrical milling cutters of this utility model can effectively improve machining accuracy, simplify the clamping and adjustment process, reduce the difficulty and physical exertion of workers, and at the same time improve cutting efficiency and shorten machining time.

[0034] The working principle and usage process of this utility model: After assembling the various components of this solution in sequence, work according to the above implementation methods according to actual needs to complete all working steps.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A four-tooth perforated socket for large-diameter cylindrical end mills, characterized in that, include: The Morse taper shank top socket base (1) has an axial compression spring cavity (11) inside; The plum blossom-shaped socket (2) is coaxially sleeved on the front end of the Morse short cone shank socket base (1); The guide tip (3) moves through the center of the plum blossom top socket (2) and extends into the base (1) of the Morse short cone shank top socket; Compression spring (4) is disposed in the compression spring cavity (11), with its two ends abutting the tail end of the guide tip (3) and the bottom of the compression spring cavity (11) respectively; The safety clamp (5) is fitted onto the interface between the Morse short cone shank top socket base (1) and the plum blossom top socket (2); The internal hex screw (6) is used to lock the safety clamp (5) to fix the plum blossom socket (2) to the Morse taper shank socket base (1).

2. The four-tooth spline socket for a large-diameter cylindrical end mill according to claim 1, characterized in that: The front end face of the plum blossom top socket (2) is provided with a four-tooth plum blossom-shaped groove, which is used to match the end tooth shape of a large-diameter cylindrical milling cutter.

3. The four-tooth sprite-shaped socket for a large-diameter cylindrical end mill according to claim 1, characterized in that: The front end of the guide tip (3) is a 60° cone angle structure, which is used to position the center hole of the cylindrical milling cutter.

4. The four-tooth perforated socket for a large-diameter cylindrical end mill according to claim 1, characterized in that: The compression spring (4) provides axial elastic preload, so that the guide tip (3) always tends to extend towards the front end of the plum blossom socket (2).