Machine-clamped three-edge milling cutter for ultra-dense teeth

Abstract

The utility model relates to an ultra-dense tooth machine-clamped three-edge milling cutter, which belongs to the technical field of cutter structure design, and comprises a left cutter body and a right cutter body which are symmetrically arranged, and the surfaces of the left cutter body and the right cutter body are respectively and correspondingly provided with a positioning connecting hole, a central positioning hole and a positioning surface; a plurality of tool aprons extending out of the tool bodies are evenly arranged on the left tool body and the right tool body in the circumferential direction, a chip containing groove is formed between every two adjacent tool aprons, installation grooves used for installing blades are formed in the sides, away from the positioning faces, of the tool aprons, the blades in the installation grooves are three-face-edge blades, and the left tool body and the right tool body are fixed together in the mode that studs penetrate through the positioning connecting holes. Compared with the prior art, the special-dense-tooth mechanically-clamped three-edge milling cutter has the advantages that the blades are uniformly distributed, the tooth number is 1.5-2.0 times of the standard tooth number, the cutting force is uniform in the finish milling process, the cutting is light and fast, the milling efficiency is effectively improved, and meanwhile, the roughness of a milling groove can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of tool structure design, and more particularly to a special dense tooth indexable three-edge milling cutter. Background Art

[0002] At present, for machining rigid parts such as bushings and inner annular grooves in cylinder blocks in China, the standard indexable three-edge milling cutters selected have few teeth, and the number of inserts that can be installed is small, resulting in a small feed rate and low efficiency during the cutting process. Due to structural reasons, the number of teeth of the standard indexable three-edge milling cutter is limited. The standard indexable three-edge milling cutter for rough milling can meet the requirements, but for the finish milling of inner annular grooves in casting workpieces, developing a special dense tooth indexable three-edge milling cutter with a simple structure to improve production efficiency is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0003] The purpose of the present application is to provide a special dense tooth indexable three-edge milling cutter to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present application provides a special dense tooth indexable three-edge milling cutter adopting the following technical solutions:

[0005] A special dense tooth indexable three-edge milling cutter includes two symmetrically arranged left tool bodies and right tool bodies. The surfaces of the left tool body and the right tool body are respectively provided with positioning connection holes, center positioning holes and positioning surfaces. A plurality of tool seats extending out of the tool body are evenly arranged along the circumferential direction of the left tool body and the right tool body. Chip flutes are formed between adjacent tool seats. An installation groove for installing an insert is opened on one side of the tool seat away from the positioning surface;

[0006] The left tool body and the right tool body are fixed together by a stud passing through the positioning connection holes, and the tool seats in the left tool body are staggered at the positions of the chip flutes in the right tool body.

[0007] Preferably, a washer can also be installed between the left tool body and the right tool body.

[0008] By adopting the above technical solutions, when the left tool body and the right tool body are directly combined, the width of the cutter teeth is the smallest. By installing a washer between the left tool body and the right tool body, the width dimension can be adjusted within a certain range to achieve the purpose of directly reaching the width of the finish-milled groove. Due to the special density of teeth, the processing efficiency is high, and it is suitable for the finish milling of grooves.

[0009] The insert in the installation groove is a three-edge insert.

[0010] Preferably, in order to facilitate the fitting and assembly of the left tool body and the right tool body, a chamfer is provided at the edge of the tool seat close to the center positioning hole.

[0011] In summary, the present application includes at least the following beneficial technical effects:

[0012] 1. Compared with the prior art, the special-tooth machine-clamped three-edge milling cutter blades of the utility model are evenly distributed, and the number of teeth is 1.5 to 2.0 times the standard number of teeth. The cutting force is uniform during the fine milling process, and the cutting is light and fast, which effectively improves the milling efficiency and reduces the roughness of the milling groove.

[0013] 2. The special-fine-tooth machine-clamped three-edge milling cutter of the utility model has a compact and reasonable structure and good manufacturing process. It can form a series of products, meet the requirements of machine-clamped three-edge milling cutters, and is suitable for further promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0015] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present application from different viewing angles.

[0016] Figure 3 It is a schematic diagram of the structure of the right blade body in the embodiment of the present application.

[0017] Explanation of the accompanying reference numerals: 1. left tool body; 2. right tool body; 3. positioning connection hole; 4. center positioning hole; 5. positioning surface; 6. tool seat; 7. chip groove. DETAILED DESCRIPTION

[0018] The following is combined with Figures 1-3 This application is described in further detail.

[0019] The present application embodiment discloses a special dense gear machine clamp three-edge milling cutter, referring to Figures 1-3 , comprising two symmetrically arranged left cutter bodies 1 and right cutter bodies 2, the surfaces of the left cutter bodies 1 and the right cutter bodies 2 are respectively provided with positioning connection holes 3, central positioning holes 4 and positioning surfaces 5, the left cutter bodies 1 and the right cutter bodies 2 are evenly provided with a plurality of cutter seats 6 extending out of the cutter bodies along the circumferential direction, a chip groove 7 is formed between adjacent cutter seats 6, a mounting groove for mounting a blade is provided on the side of the cutter seat 6 away from the positioning surface 5, and the blade in the mounting groove is a three-sided blade;

[0020] The left cutter body 1 and the right cutter body 2 are fixed together by studs penetrating the positioning connection holes 3. The cutter seat 6 in the left cutter body 1 is staggered at the position of the chip groove 7 in the right cutter body 2, so that the cutter teeth can be doubled.

[0021] When the left cutter body 1 and the right cutter body 2 are directly combined, the width of the cutter teeth is the smallest. A gasket can also be installed between the left cutter body 1 and the right cutter body 2, and the width size can be adjusted within a certain range to achieve the purpose of directly milling the groove width. Due to the extremely dense number of teeth and high processing efficiency, it is suitable for fine milling of grooves.

[0022] Reference Figure 3In order to facilitate the assembly of the left blade body 1 and the right blade body 2, a chamfer is provided on one edge of the blade seat 6 close to the central positioning hole 4.

[0023] The implementation principle of a special dense gear machine clamp three-edge milling cutter in the embodiment of the present application is:

[0024] By combining the left cutter body 1 and the right cutter body 2 together, and staggering the teeth of the cutter seat 6 of one cutter body at the position of the chip groove 7 of the other cutter body, the number of teeth of the cutter with the same diameter is doubled, and the number of teeth is evenly distributed. At this time, the number of teeth of the machine-clamped three-face milling cutter with the same diameter is twice that of the standard three-face milling cutter, which can increase the cutting amount during milling and improve production efficiency. The tooth number coefficient of the machine-clamped three-face milling cutter of the utility model reaches 0.13-0.14, realizing the milling of ultra-fine teeth.

[0025] The determination of tool processing parameters is closely related to the number of teeth. For the same feed per tooth, the total feed of the tool increases proportionally when the number of teeth increases, and the milling of the annular groove significantly improves the processing efficiency. When the feed rate is fixed, the feed per tooth decreases proportionally as the number of teeth increases. When milling the annular groove, the feed per tooth decreases, and the cutting force decreases accordingly. In addition, the blades of this face milling cutter are evenly distributed, the cutting force is uniform during the fine milling process, and the cutting is light and quick, which effectively improves the milling efficiency and reduces the roughness of the milled annular groove.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special fine-tooth machine-clamped three-edge milling cutter, characterized in that: It includes two symmetrically arranged left tool bodies (1) and right tool bodies (2). Positioning connection holes (3), central positioning holes (4) and positioning surfaces (5) are respectively arranged on the surfaces of the left tool body (1) and the right tool body (2). A number of tool seats (6) protruding from the tool body are evenly arranged on the left tool body (1) and the right tool body (2) along the circumferential direction. Chip flutes (7) are formed between adjacent tool seats (6). An installation groove for installing a cutting blade is provided on one side of the tool seat (6) away from the positioning surface (5). The left tool body (1) and the right tool body (2) are fixed together by a stud passing through the positioning connection hole (3). The tool seats (6) in the left tool body (1) are staggered at the positions of the chip flutes (7) in the right tool body (2).

2. The superfine-tooth machine-clamped three-edge milling cutter according to claim 1, wherein: A washer can also be installed between the left tool body (1) and the right tool body (2).

3. The special fine-tooth machine-clamped three-edge milling cutter according to claim 1, wherein: The cutting blade in the installation groove is a three-edge cutting blade.

4. The special fine-tooth machine-clamped three-edged milling cutter according to claim 1, characterized in that: A chamfer is provided on one side edge of the tool seat (6) close to the central positioning hole (4).

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