Composite milling cutter

Abstract

The utility model is applied to the field of milling cutters, in particular to a composite milling cutter, which comprises a first cutter, a second cutter and a connecting piece, the first cutter comprises a connecting end, the periphery of the connecting end is sleeved with the second cutter and a fixing piece, two ends of the connecting end are respectively provided with a cutting end and a threaded end, and the connecting end is provided with a first connecting hole; the fixing piece is clamped between the first cutter and the second cutter, the second cutter and the fixing piece are provided with a second connecting hole and a fourth connecting hole respectively, and one end of the connecting piece is fixedly connected to the first cutter, the second cutter and the fixing piece respectively. The first tool and the second tool are fixed through the connecting piece, replacement of the second tool is achieved, further, the central axis of the first tool is not changed, the central axis of the second tool is the same as the central axis of the first tool after the second tool is replaced, and therefore repeated tool setting and positioning are not needed after the second tool is replaced, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a composite milling cutter. Background Technique

[0002] In recent years, the workpiece materials faced in milling processing have become increasingly complex and diverse. Since there are differences in cutting characteristics between different materials, different milling cutters are required to complete the processing. For example, for the screen bonding surface of 3C products, the upper layer of this bonding surface is aluminum alloy, the middle layer is titanium alloy, and the bottom layer is a combination of titanium and aluminum materials. In addition to the complex material composition, the requirements for surface processing accuracy are quite strict, and there should be no burrs, tool marks, etc. on the finished product. Therefore, in the actual processing process, it is necessary to first use a special finishing milling cutter for aluminum alloy (hereinafter referred to as the second tool) to process the upper layer material, and then use a special milling cutter for titanium alloy (hereinafter referred to as the first tool) to process the middle layer and the bottom layer.

[0003] In the prior art, the milling cutter with the patent number 2023222624948 is of an integrated design, that is, a milling cutter combines the first tool and the second tool and can be used simultaneously. However, when it is necessary to replace the second tool of the corresponding specification for processing different specifications, the integrated composite milling cutter needs to be disassembled and replaced as a whole. After replacement, it is necessary to repeat tool setting and positioning, which poses risks of tool clamping error and tool runout, affecting the processing efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a composite milling cutter to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A composite milling cutter includes a first tool and a second tool. The second tool is provided with a connecting piece. The first tool includes a connecting end. A second tool and a fixing piece are sleeved on the outer periphery of the connecting end. The first tool, the second tool, and the fixing piece are coaxially arranged. A cutting end and a threaded end are respectively arranged at both ends of the connecting end. A first connecting hole is opened in the connecting end. The fixing piece is clamped between the first tool and the second tool. The second tool and the fixing piece are respectively provided with a second connecting hole and a fourth connecting hole. One end of the connecting piece passes through the first tool, the second tool, and the fixing piece through the first connecting hole, the second connecting hole, and the fourth connecting hole. The connecting piece is fixedly connected to the first tool, the second tool, and the fixing piece. The shapes of the first connecting hole, the second connecting hole, the fourth connecting hole, and the connecting piece match each other.

[0006] Preferably, a first thread groove is opened at the top end of the second tool. Threads are arranged on the outer periphery of the fixing piece. The fixing piece is threadedly connected to the first thread groove.

[0007] Preferably, a third connection hole is formed in the second cutter, a first relief hole is formed in the fixing member, and the connection end is respectively fitted with the third connection hole and the first relief hole.

[0008] Preferably, a clamping member is connected to the top end of the first cutter, a second threaded groove is formed in the clamping member, and the threaded end is in threaded connection with the second threaded groove.

[0009] Preferably, a first abutting platform is formed at the top of the cutting end, a second abutting platform is formed at the bottom end of the second cutter located at the third connection hole, the first abutting platform and the second abutting platform abut against each other, and both the first abutting platform and the second abutting platform are inclined platforms.

[0010] Preferably, a guiding platform for guiding and positioning the second threaded groove is formed at the top end of the threaded end, and the guiding platform is an inclined platform.

[0011] Preferably, the first connection hole, the second connection hole and the fourth connection hole are screw holes, the connecting member is a bolt, and the connecting member is in threaded connection with the first connection hole, the second connection hole and the fourth connection hole respectively.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. A composite milling cutter includes a first cutter, a second cutter and a connecting member. The first cutter includes a connection end, the outer periphery of the connection end is sleeved with a second cutter and a fixing member, a cutting end and a threaded end are respectively arranged at both ends of the connection end, a first connection hole is formed in the connection end, the fixing member is clamped between the first cutter and the second cutter, the second cutter and the fixing member are respectively formed with a second connection hole and a fourth connection hole, one end of the connecting member is fixedly connected to the first cutter, the second cutter and the fixing member respectively. When the second cutter needs to be replaced, the connecting member is disassembled, after sleeving the required second cutter, the first cutter and the second cutter are fixed with the connecting member again, so as to realize the replacement of the second cutter. Further, the central axis of the first cutter does not change. After replacing the second cutter, the central axis of the second cutter is the same as that of the first cutter. Therefore, after replacing the second cutter, it is not necessary to repeat tool setting and positioning, which improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the decomposition of the first part of the structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the decomposition of the second part of the structure of the present utility model;

[0017] Figure 4 is a cross-sectional view of the overall structure of the present utility model;

[0018] Figure 5 is Figure 4 an enlarged view of A in

[0019] Figure 6 is Figure 4 an enlarged view of B in

[0020] In the figure: the first tool 1, the cutting end 11, the first abutting table 111, the connecting end 12, the first connecting hole 13, the threaded end 14, the guiding table 141, the second tool 2, the second connecting hole 21, the first threaded groove 22, the third connecting hole 23, the second abutting table 231, the fixing member 3, the fourth connecting hole 31, the first relief hole 32, the clamping member 4, the second threaded groove 41, and the connecting member 5. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the Figure 4 orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] Such as Figures 1 to 6As shown in the figure, a composite milling cutter in this embodiment includes a first cutter 1 and a connecting member 5. The first cutter 1 includes a connecting end 12. A second cutter 2 and a fixing member 3 are sleeved on the outer periphery of the connecting end 12. A cutting end 11 and a threaded end 14 are respectively arranged at both ends of the connecting end 12. A first connecting hole 13 is formed in the connecting end 12. The fixing member 3 is clamped between the first cutter 1 and the second cutter 2. The second cutter 2 and the fixing member 3 are respectively provided with a second connecting hole 21 and a fourth connecting hole 31. One end of the connecting member 5 passes through the first cutter 1, the second cutter 2 and the fixing member 3 through the first connecting hole 13, the second connecting hole 21 and the fourth connecting hole 31. The connecting member 5 is fixedly connected to the first cutter 1, the second cutter 2 and the fixing member 3. The shapes of the first connecting hole 13, the second connecting hole 21, the fourth connecting hole 31 and the connecting member 5 match each other. When the second cutter 2 needs to be replaced, the connecting member 5 is disassembled. After sleeving the required second cutter 2, the first cutter 1 and the second cutter 2 are fixed with the connecting member 5 again to realize the replacement of the second cutter 2. Further, the first cutter 1, the second cutter 2 and the fixing member 3 are coaxially arranged, and the central axis of the first cutter 1 remains unchanged. After replacing the second cutter 2, the central axis of the second cutter 2 is the same as the central axis of the first cutter 1. Therefore, there is no need to repeat tool setting and positioning after replacing the second cutter 2, which improves the work efficiency.

[0025] Further, a first thread groove 22 is formed at the top end of the second cutter 2. Threads are arranged on the outer periphery of the fixing member 3. The fixing member 3 is in threaded connection with the first thread groove 22. The fixing member 3 is in threaded connection with the second cutter 2, which improves the tightness of the connection between the fixing member 3 and the second cutter 2. Further, a third connecting hole 23 is formed in the second cutter 2, and a first relief hole 32 is formed in the fixing member 3. The connecting end 12 is respectively in contact with the third connecting hole 23 and the first relief hole 32. The inner walls of the third connecting hole 23 and the first relief hole 32 apply pressure to the first cutter 1, reducing the vibration of the first cutter 1 during the machining process, thereby improving the machining accuracy.

[0026] Further, a clamping member 4 is connected to the top end of the first cutter 1. A second thread groove 41 is formed in the clamping member 4. The threaded end 14 is in threaded connection with the second thread groove 41. The first cutter 1 is in threaded connection with the clamping member 4, which improves the connection convenience between the first cutter 1 and the clamping member 4.

[0027] Further, a first abutting platform 111 is formed at the top of the cutting end 11. A second abutting platform 231 is formed at the bottom end of the second cutter 2 where the third connecting hole 23 is located. The first abutting platform 111 abuts against the second abutting platform 231. Both the first abutting platform 111 and the second abutting platform 231 are inclined platforms. The second abutting platform 231 provides mutual support for the first abutting platform 111, improving the docking accuracy between the first cutter 1 and the second cutter 2.

[0028] Further, a guiding platform 141 for facilitating the guiding and positioning of the second thread groove 41 is provided at the top end of the threaded end 14. The guiding platform 141 is an inclined platform. When the first tool 1 is connected to the clamping member 4, due to the guiding effect of the guiding platform 141, the positioning accuracy of the first tool 1 and the clamping member 4 is improved.

[0029] Further, the first connection hole 13, the second connection hole 21 and the fourth connection hole 31 are screw holes, the connecting member 5 is a bolt, and the connecting member 5 is threadedly connected to the first connection hole 13, the second connection hole 21 and the fourth connection hole 31 respectively, which improves the connection convenience of the connecting member 5 with the first connection hole 13, the second connection hole 21 and the fourth connection hole 31 respectively.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite milling cutter, comprising a first cutting tool and a second cutting tool, characterized in that: The second tool is provided with a connecting member. The first tool includes a connecting end. A second tool and a fixing member are sleeved on the outer periphery of the connecting end. The first tool, the second tool and the fixing member are coaxially arranged. A cutting end and a threaded end are respectively arranged at both ends of the connecting end. A first connection hole is formed in the connecting end. The fixing member is clamped between the first tool and the second tool. The second tool and the fixing member are respectively provided with a second connection hole and a fourth connection hole. One end of the connecting member passes through the first tool, the second tool and the fixing member through the first connection hole, the second connection hole and the fourth connection hole. The connecting member is fixedly connected to the first tool, the second tool and the fixing member. The shapes of the first connection hole, the second connection hole, the fourth connection hole and the connecting member match each other.

2. The composite milling cutter according to claim 1, wherein: A first thread groove is formed at the top end of the second tool. Threads are arranged on the outer periphery of the fixing member. The fixing member is in threaded connection with the first thread groove.

3. A composite milling cutter according to claim 1, characterized in that: The second tool is provided with a third connection hole. The fixing member is provided with a first relief hole. The connecting end is respectively in fit with the third connection hole and the first relief hole.

4. A composite milling cutter according to claim 1, characterized in that: A clamping member is connected to the top end of the first tool. A second thread groove is formed in the clamping member. The threaded end is in threaded connection with the second thread groove.

5. A composite milling cutter according to claim 1, characterized in that: A first abutting platform is formed at the top of the cutting end. A second abutting platform is formed at the bottom end of the third connection hole of the second tool. The first abutting platform and the second abutting platform abut against each other. Both the first abutting platform and the second abutting platform are inclined platforms.

6. The composite milling cutter according to claim 1, wherein: A guiding platform for guiding and positioning the second thread groove is formed at the top end of the threaded end. The guiding platform is an inclined platform.

7. A composite milling cutter according to claim 1, characterized in that: The first connection hole, the second connection hole and the fourth connection hole are screw holes. The connecting member is a bolt. The connecting member is in threaded connection with the first connection hole, the second connection hole and the fourth connection hole respectively.

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