Milling cutter

Abstract

The utility model provides a milling cutter, which relates to the technical field of cutter structures and comprises a cutter head structure, a cutter holder structure and a fixing lantern ring, the cutter head structure is mounted on the cutter holder structure, and the fixing lantern ring is used for fixing the cutter head structure and the cutter holder structure; the tool bit structure comprises a machining end and a tool bit connecting body. The tool apron structure comprises a mounting end and a tool apron connecting main body; external thread parts are arranged on the outer circumferential walls of the adjacent parts of the tool bit connecting main body and the tool apron connecting main body; the fixed lantern ring is in threaded connection with the external thread part, the threaded connection mode is simply improved on the basis of insertion of a foundation on the whole, the problems that the milling cutter is short in service life, low in article machining precision and not provided with an excessively complex structure are solved, but the connection stability is further improved, and therefore the machining precision is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tool structure, in particular to a milling cutter. Background Art

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. When working, each tooth cuts off the workpiece's excess in sequence and intermittently. Milling cutters are mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines. Cylindrical milling cutters are used to process planes on horizontal milling machines, and end mills are used to mill grooves at a certain angle.

[0003] The cutter head and cutter holder of the milling cutter are used in combination. Different milling cutter models have different cutter heads and cutter holders. The cutter head is used to install the blade, and the cutter holder is used to install the cutter head. They need to be installed together before the milling cutter can be used for processing. The cutter head and cutter holder have different models and specifications. You need to choose the appropriate model and specification for installation and use according to the specific situation.

[0004] In the prior art, many small processing factories are not equipped with multiple production lines for the production process of the same workpiece. For complex or multi-milling workpieces, it is necessary to replace the cutter head on the tool holder for subsequent complete processing. The existing relatively simple milling cutters have a processing end and a tool holder installation end at both ends, and the cutter head and the tool holder are directly installed by plug-in threaded connection or docking bolt fixing. For this type of milling cutter, it has the following defects in the actual production process: the docking method is relatively simple and the stability is poor. Specifically, although this type of milling cutter has a short lifespan and low processing precision, it is unnecessary to design an overly complex structure if it is frequently replaced, but the actual processing precision is much lower than that of the more complex milling cutters. Therefore, we propose a milling cutter. Summary of the invention

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art. The docking method is relatively simple and has poor stability. Specifically, although the life of this type of milling cutter is not long and the precision of processed objects is not high, it is unnecessary to design an overly complex structure by frequent replacement, but the actual processing precision is far behind that of more complex milling cutters.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A milling cutter comprises a cutter head structure, a cutter seat structure and a fixing collar, wherein the cutter head structure is mounted on the cutter seat structure, and the fixing collar is used to fix the cutter head structure and the cutter seat structure;

[0008] The cutter head structure comprises a processing end and a cutter head connecting body;

[0009] The tool holder structure comprises a mounting end and a tool holder connecting body;

[0010] The outer circumferential walls of the adjacent parts of the cutter head connecting body and the cutter seat connecting body are both provided with external threaded parts;

[0011] The fixing collar is threadedly connected to the external threaded portion.

[0012] As a preferred solution of the utility model, the blade head connecting body and the blade holder connecting body are provided with plug-in grooves at corresponding positions, the plug-in grooves are symmetrically provided with cross petals outward from the center, and a sealing gasket is bonded inside the cross petals.

[0013] The technical effect of adopting the above further scheme is: the plug-in stability is ensured by the conventional docking groove structure of the plug-in groove and the cross-petal, and the installation stability of the supporting tool holder and the tool head is ensured, while the sealing gasket fills the inside to further improve the docking stability.

[0014] As a preferred solution of the utility model, the knife seat connection body is provided with an installation plug connector adapted to the plug slot at a position corresponding to the knife seat connection body.

[0015] The technical effect of adopting the above further solution is: the preliminary installation is completed by using the installation plug connector that is adapted to the plug slot and cooperating with the sealing gasket.

[0016] As a preferred solution of the utility model, the fixing sleeve is fitted on one end of the fixing sleeve ring close to the cutter head connecting body and is threadedly connected to the external threaded portion with an auxiliary fixing sleeve.

[0017] The technical effect of adopting the above further solution is: through the threaded connection between the auxiliary fixing sleeve and the external threaded part, after the fixing collar is installed, the fixing collar is reinforced and doubly fixed to avoid loosening.

[0018] As a preferred solution of the utility model, the fixing collar is fitted with one end close to the knife seat connecting body and is integrally formed with the knife seat connecting body to form a limiting disc.

[0019] The technical effect of adopting the above further solution is: when the fixing collar is threadedly rotated by the limiting disc to connect and install the cutter head connecting body and the cutter seat connecting body, the upper end is limited.

[0020] As a preferred solution of the utility model, a plurality of shock-absorbing grooves are provided on the periphery of the fixing collar.

[0021] The technical effect of adopting the above further solution is: through the design of the shock-absorbing groove, it is used to resist and accommodate the shock absorber on the mounting seat, provide a force point, and absorb the vibration of the connection.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] In the utility model, through design, the fixing collar is threadedly connected to the periphery of the connection part between the cutter head connection body and the cutter seat connection body, the upper end is limited by a limiting disc, and the auxiliary fixing sleeve is threadedly connected to the external threaded part. After the fixing collar is installed, the fixing collar is reinforced and doubly fixed to avoid loosening. The shock-absorbing groove is designed to contact and accommodate the shock absorber on the mounting seat, provide a force point, and absorb the vibration at the connection. The overall method of threaded connection is simply improved on the basis of the plug-in connection relying on the foundation, which improves the service life of this type of milling cutter and the low precision of the processed objects. The overly complex structure is not designed, but the connection stability is further improved, thereby effectively improving the processing precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of a milling cutter provided by the utility model;

[0025] Figure 2 A schematic diagram of the overall disassembly structure of a milling cutter provided by the utility model;

[0026] Figure 3 The utility model is a schematic diagram of the internal structure of a plug-in slot of a milling cutter.

[0027] Legend: 1. Cutter head structure; 11. Processing end; 12. Cutter head connecting body; 13. Plug-in groove; 14. Cross petal; 15. Sealing gasket; 2. Cutter holder structure; 21. Mounting end; 22. Cutter holder connecting body; 23. Mounting plug connector; 3. Fixing ring; 4. External threaded part; 5. Auxiliary fixing sleeve; 6. Limiting disc; 7. Shock-absorbing groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items. Example

[0032] like Figure 1-3 As shown, the utility model provides a technical solution: a milling cutter, comprising a cutter head structure 1, a cutter seat structure 2 and a fixing ring 3, the cutter head structure 1 is installed on the cutter seat structure 2, and the fixing ring 3 is used to fix the cutter head structure 1 and the cutter seat structure 2; the cutter head structure 1 comprises a processing end 11 and a cutter head connecting body 12, the type of the processing end 11 can be customized and formed integrally with the cutter head connecting body 12; the cutter seat structure 2 comprises a mounting end 21 and a cutter seat connecting body 22, the type of the mounting end 21 can be customized and formed integrally with the cutter seat connecting body 22; external threaded portions 4 are provided on the outer circumferential walls adjacent to the cutter head connecting body 12 and the cutter seat connecting body 22; the fixing ring 3 is threadedly connected to the external threaded portion 4. Example

[0033] like Figure 1-3 As shown, a plug-in groove 13 is provided at the corresponding position between the cutter head connecting body 12 and the cutter seat connecting body 22, and a cross petal 14 is symmetrically provided outward from the center of the plug-in groove 13, and a sealing gasket 15 is bonded inside the cross petal 14. A mounting plug connector 23 adapted to the plug-in groove 13 is provided at the corresponding position between the cutter seat connecting body 22 and the cutter seat connecting body 22, and an auxiliary fixing sleeve 5 is threadedly connected to the external threaded portion 4 at one end of the fixing ring 3 close to the cutter head connecting body 12, and a limiting disc 6 is integrally formed with the cutter seat connecting body 22, and a plurality of shock-absorbing grooves 7 are provided on the periphery of the fixing ring 3. It should be emphasized that the design of the shock absorber against the cutter seat or the blade body is a conventional technology. The shock-absorbing groove 7 is based on this basis and is provided on the periphery of the fixing ring 3, thereby designing the connection between the cutter head and the cutter seat.

[0034] The working process of the utility model is as follows: when replacing the cutter head of a milling cutter, the initial installation is completed by installing the plug connector 23 adapted to the plug slot 13 and cooperating with the sealing gasket 15, and then the fixing ring 3 is rotated at one end of the cutter head structure 1 to connect with the external threaded portion 4, and the limiting disc 6 is used to thread the fixing ring 3 to connect and install the cutter head connecting body 12 and the tool holder connecting body 22, and the upper end is limited, and then the auxiliary fixing sleeve 5 is pushed and rotated through the cutter head structure 1, and the auxiliary fixing sleeve 5 is threadedly connected with the external threaded portion 4, and the fixing ring 3 is reinforced and doubly fixed to avoid loosening, thereby completing the overall installation.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milling cutter, comprising a cutter head structure (1), a cutter seat structure (2) and a fixing collar (3), characterized in that: The cutter head structure (1) is mounted on the cutter seat structure (2), and the fixing ring (3) is used to fix the cutter head structure (1) and the cutter seat structure (2); The cutter head structure (1) comprises a processing end (11) and a cutter head connecting body (12); The knife seat structure (2) comprises a mounting end (21) and a knife seat connecting body (22); External threaded portions (4) are provided on the outer circumferential walls of the adjacent portions of the cutter head connecting body (12) and the cutter seat connecting body (22); The fixing collar (3) is threadedly connected to the external threaded portion (4); The fixing sleeve (3) is fitted with one end of the blade head connecting body (12) and is threadedly connected to the external threaded portion (4) to form an auxiliary fixing sleeve (5); One end of the fixing collar (3) close to the knife seat connecting body (22) is fitted with and integrally formed with the knife seat connecting body (22) to form a limiting disc (6); A plurality of shock-absorbing grooves (7) are provided on the periphery of the fixing collar (3).

2. A milling cutter according to claim 1, characterized in that: The blade head connecting body (12) and the blade seat connecting body (22) are provided with a plug-in groove (13) at corresponding positions, and the plug-in groove (13) is symmetrically provided with a cross petal (14) outward from the center of the circle, and a sealing gasket (15) is bonded inside the cross petal (14).

3. A milling cutter according to claim 2, characterized in that: The knife seat connection body (22) is provided with a mounting plug connector (23) adapted to the plug slot (13) at a position corresponding to the knife seat connection body (22).

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