Composite cutter

Abstract

The utility model discloses a composite cutter, which comprises a cutter handle and a cutter head which are integrally arranged, the front part of the cutter head is provided with a plurality of straight blades used for milling a neat plane on a workpiece, a plurality of R arc blades used for milling an arc surface on the workpiece are arranged far away from the front part of the cutter head, and the straight blades and the R arc blades are integrally formed. The straight blade and the R arc blade which are integrally formed can avoid the need of replacing various tool bits in the machining process, so that the machining efficiency is improved; meanwhile, the straight edge and the R arc edge which are integrally formed can prevent a joint gap from being formed in the cutting part of the tool bit, size errors caused by inaccurate welding or assembling are reduced, and the precision of machined parts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cutting tools, in particular to a composite tool.

Background Art

[0002] A milling cutter is a rotating tool with one or more cutting teeth used for milling operations. During operation, each cutting tooth intermittently cuts off the surplus material of the workpiece in sequence. In the prior art, when machining an arc groove, first a slot milling cutter is used to mill a rectangular groove on the surface of the workpiece, and then a ball-end milling cutter is used to further machine the rectangular groove into an arc-shaped groove. During the machining process, it is necessary to replace the tool and re-align the tool. In this way, not only is it time-consuming and laborious, but also the work efficiency is low. Moreover, due to the need to re-align the tool, errors are likely to occur, thus affecting the machining accuracy.

Content of the Utility Model

[0003] In order to solve the technical problems of low machining efficiency and low machining accuracy caused by the need to replace the tool and re-align the tool when the existing milling cutter processes parts, the utility model proposes a composite tool.

[0004] The utility model is realized by the following technical solutions:

[0005] A composite tool includes a tool shank and a tool head integrally arranged. A plurality of straight edges for milling a smooth plane on the workpiece are arranged at the front part of the tool head, and a plurality of R-arc edges for milling an arc surface on the workpiece are arranged away from the front part of the tool head. The straight edges and the R-arc edges are integrally formed. The integrally formed straight edges and R-arc edges can avoid the need to replace multiple tool heads during the machining process, improving the machining efficiency; at the same time, the integrally formed straight edges and R-arc edges can avoid joint gaps in the cutting part of the tool head, reducing the dimensional errors caused by inaccurate welding or assembly and improving the machining accuracy of the parts.

[0006] As described above, in a composite tool, the tool shank and the tool head are cylindrical.

[0007] As described above, in a composite tool, an arc edge for forming the workpiece is arranged between the straight edge and the R-arc edge, and the arc edge is recessed radially towards the tool head to form an arc shape.

[0008] As described above, in a composite tool, the straight edge, the R-arc edge and the arc edge are integrally formed.

[0009] As described above, in a composite tool, chip flutes for discharging waste chips are arranged between adjacent straight edges.

[0010] As described above, in a composite tool, the chip flutes are formed by tangential cutting of the cross-section chord of the tool head.

[0011] A composite tool as described above, wherein the straight edges are circumferentially distributed around the central axis of the tool.

[0012] A composite tool as described above, wherein the number of straight edges is four.

[0013] A composite tool as described above, wherein the R-arc edge is formed by tangential cutting of the cross-section of the tool tip, and the cutting edge of the R-arc edge is recessed towards the inside of the tool tip.

[0014] A composite tool as described above, wherein the cutting edge of the R-arc edge is arranged opposite to the cutting edge of the straight edge.

[0015] Compared with the prior art, a composite tool proposed by the present utility model has the following beneficial effects:

[0016] The straight edge and the R-arc edge of the present utility model are integrally formed. The integrally formed straight edge and R-arc edge can avoid the need to replace multiple tool tips during the processing, improving the processing efficiency; at the same time, the integrally formed straight edge and R-arc edge can avoid the presence of joint gaps in the cutting part of the tool tip, reducing the dimensional errors caused by inaccurate welding or assembly, and improving the precision of the machined parts.

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the following further details the present utility model with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Specific embodiments, in combination with Figures 1 to 2As shown in the figure, the technical solution of the present utility model will be further described. A composite tool includes a handle 10 and a tool tip 20 integrally provided. A plurality of straight edges 21 for milling a neat plane on the workpiece are provided at the front of the tool tip 20, and a plurality of R-arc edges 22 for milling an arc surface on the workpiece are provided away from the front of the tool tip 20. The straight edges 21 and the R-arc edges 22 are integrally formed. The integrally formed straight edges 21 and R-arc edges 22 can avoid the need to replace multiple tool tips during the machining process, improving the machining efficiency. At the same time, the integrally formed straight edges 21 and R-arc edges 22 can avoid joint gaps in the cutting part of the tool tip, reducing dimensional errors caused by inaccurate welding or assembly and improving the precision of the machined parts.

[0022] Further, as a preferred implementation manner of this solution rather than a limitation, the handle 10 and the tool tip 20 are cylindrical.

[0023] Further, as a preferred implementation manner of this solution rather than a limitation, an arc edge 23 for forming the workpiece is provided between the straight edge 21 and the R-arc edge 22. The arc edge 23 is recessed radially towards the tool tip 20 to form an arc shape. The straight edge 21, the R-arc edge 22, and the arc edge 23 are integrally formed.

[0024] In this embodiment, the design of integrally forming the straight edge 21, the R-arc edge 22, and the arc edge 23 can avoid joint gaps in the cutting part, making the tool form a continuous and seamless whole, improving the structural strength of the tool. During the machining process, it can be machined in one forming, simplifying the machining process, and improving both the machining efficiency and the machining precision.

[0025] Further, as a preferred implementation manner of this solution rather than a limitation, a chip removal groove 30 for discharging waste chips is provided between adjacent straight edges 21. The chip removal groove 30 is formed by tangential cutting of the cross-section of the tool tip 20.

[0026] In this embodiment, the chip removal groove between adjacent straight edges can reduce the risk of chip clogging and entanglement during the machining process, making the chips easier to be discharged from the machining area, thereby improving the machining efficiency and the machining precision.

[0027] Further, as a preferred implementation manner of this solution rather than a limitation, the straight edges 21 are circumferentially distributed with the central axis of the tool as the center. The number of the straight edges 21 is preferably four.

[0028] In this embodiment, the straight edges are circumferentially distributed with the central axis of the tool as the center, which can enable each straight edge to participate in cutting during the rotary machining process of the tool, improving the machining efficiency. At the same time, the circumferentially distributed straight edges make the cutting force more evenly distributed on the tool, reducing local stress concentration and improving the stability and durability of the tool.

[0029] Further, as a preferred implementation manner rather than a limitation of this solution, the R-arc edge 22 is formed by tangential cutting of the cross-section of the tool tip 20. The edge of the R-arc edge 22 is recessed towards the inside of the tool tip 20. The direction of the edge of the R-arc edge 22 is set opposite to that of the straight edge 21. The number of edges of the R-arc edge 22 corresponds to the number of edges of the straight edge 21.

[0030] In this embodiment, the design of the R-arc edge enables the tool to fit the shape of the workpiece better when processing a curved surface or milling an arc surface of the machined part, reducing tool runout or chatter, and improving machining efficiency and accuracy.

[0031] The working principle of this embodiment is as follows:

[0032] A composite tool proposed by the present invention includes a tool shank 10 and a tool tip 20 integrally provided. When machining a part, the straight edge 211 at the front of the tool tip 20 first mills a neat plane on the surface of the machined part, and then the arc edge 23 shapes the neat plane milled on the machined part. The R-arc edge 22 formed by tangential cutting towards the tool shank 10 in an R-arc shape mills an arc surface on the shaped machined part.

[0033] Those of ordinary skill in the art should understand that: as described above is an implementation manner provided in combination with specific content, and it is not considered that the specific implementation of the present utility model is only limited to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any method, structure, etc. that is similar or identical to the present utility model, or any several technical deductions or replacements made under the premise of the concept of the present utility model, should be regarded as the protection scope of the present utility model.

Claims

1. A composite tool, characterized in that, It includes a tool shank (10) and a tool tip (20) which are integrally provided. A plurality of straight edges (21) for milling a smooth plane on a workpiece are provided at the front of the tool tip (20), and a plurality of R-arc edges (22) for milling an arc surface on the workpiece are provided away from the front of the tool tip (20). The straight edges (21) and the R-arc edges (22) are integrally formed. An arc edge (23) for forming the workpiece is provided between the straight edge (21) and the R-arc edge (22). The arc edge (23) is recessed radially towards the tool tip (20) to form an arc shape. The straight edge (21), the R-arc edge (22) and the arc edge (23) are integrally formed.

2. The composite tool according to claim 1, wherein The tool shank (10) and the tool tip (20) are cylindrical.

3. A composite tool according to claim 1 or 2, characterized in that, A chip removal groove (30) for discharging waste chips is provided between adjacent straight edges (21).

4. The composite tool according to claim 3, characterized in that, The chip removal groove (30) is formed by tangential cutting of the cross-section of the tool tip (20).

5. A composite tool according to claim 1, characterized in that, The straight edges (21) are circumferentially distributed with the central axis of the tool as the center.

6. A composite tool according to claim 1, characterized in that, The number of edges of the straight edge (21) is four.

7. A composite tool according to claim 1 or 2, characterized in that, The R-arc edge (22) is formed by tangential cutting of the cross-section of the tool tip (20), and the cutting edge of the R-arc edge (22) is recessed towards the inside of the tool tip (20).

8. A composite tool according to claim 1, characterized in that, The cutting edge of the R-arc edge (22) is arranged opposite to the cutting edge of the straight edge (21).

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