Combined heat-conducting milling cutter

Abstract

The utility model discloses a combined heat conduction milling cutter, it includes the cutter body, one or more than the cutter bar and the tool apron, be equipped with the buckle connection structure between the cutter body and the cutter bar, between the cutter bar and the cutter bar, between the cutter bar and the tool apron, the cutter bar is equipped with heat conduction heat dissipation structure still, the cutter body is equipped with milling structure. The utility model discloses through setting buckle connection structure is used for making the cutter body and the cutter bar between, the cutter bar and the tool apron between quick buckling and dismounting, saves operation step and time, guarantees the stability of connection, reduces the cost of maintenance, and can add the cutter bar according to the demand and constitutes the combined heat conduction milling cutter of different length, improves the applicability, reduces the customization cost. Through setting heat conduction heat dissipation structure is used for improving the heat conduction heat dissipation effect and efficiency of cutter body addition inside, prolongs the service life of combined heat conduction milling cutter.

Description

Technical Field

[0001] This utility model relates to the technical field of milling cutters, specifically to a combined heat-conducting milling cutter. Background Technology

[0002] Milling is a high-efficiency machining method that uses a rotating multi-edged cutting tool to cut a workpiece. During operation, the cutting tool rotates (performs the main motion) and the workpiece moves (performs the feed motion). The workpiece can also be fixed, but the rotating cutting tool must still move (simultaneously completing the main motion and feed motion). Milling machine tools include horizontal milling machines, vertical milling machines, and large gantry milling machines. These machine tools can be ordinary machine tools or CNC machine tools. Milling is generally performed on milling machines or boring machines and is suitable for machining planes, grooves, various shaped surfaces (such as milling keys, gears, and threads) and special shaped surfaces of molds. It is a mechanical machining method that uses a milling cutter as a cutting tool to machine the surface of an object.

[0003] Existing milling cutter structures are relatively simple: (1) no chip removal grooves are provided on the cutter body surface, making it difficult to remove milling waste and thus affecting the machining progress; (2) the length of the traditional milling cutter shank is fixed and cannot be adjusted according to actual machining needs, resulting in many limitations; (3) the tool holder surface does not have a clamping surface, making the tool connection unstable on the machine tool, which can easily lead to tool detachment and pose certain safety hazards. In response to the above problems, publication number: CN202122330523.0 discloses a combination milling cutter with adjustable length, including a cutter body, a cutter shank, and a tool holder. The beneficial effects of this utility model are as follows: the cutter body has a three-blade structure and is made of high-speed steel, which improves the strength of the cutter body and increases the service life of the milling cutter. Spiral chip removal grooves are opened between the side blades to facilitate chip removal and improve milling efficiency. The outer cutter bar is connected to the outer end of the inner cutter bar in a snap-fit ​​sliding sleeve manner through corresponding limiting grooves and limiting blocks. The outer cutter bar and the inner cutter bar are detachably connected by two symmetrical locking screws and threaded holes, which facilitates stable assembly of the cutter bar and facilitates disassembly and maintenance later. There are eight threaded holes, which are symmetrically and evenly distributed on the inner end of the inner cutter bar surface, which facilitates adjustment of the overall length of the cutter bar and increases the overall stability of the tool. The tool holder surface is symmetrically provided with two clamping surfaces, which facilitates the stable clamping of the tool holder on the machine tool and thus fixes the milling cutter.

[0004] However, the milling cutter still has the following problems: (1) The outer and inner cutter bars of the existing milling cutter are detachably connected by two symmetrical locking screws and threaded holes, which facilitates stable assembly of the cutter bar and facilitates disassembly and maintenance in the later stage. The disassembly or installation steps of the threaded connection structure are cumbersome and the adjustment efficiency is slow. Moreover, the threaded connection structure may cause the locking screws to loosen due to centrifugal force after long-term use, which affects the safety of use; (2) The heat generated during the milling process of the existing milling cutter is easy to accumulate inside the cutter body. The existing heat dissipation method mainly relies on the heat dissipation of the metal material itself, which has limited efficiency. The heat accumulation leads to a shortened tool life and may even cause chip welding, affecting the machining accuracy and chip removal effect. Utility Model Content

[0005] This utility model addresses the shortcomings of current technology by providing a combined heat-conducting end mill, aiming to solve the technical problems of poor stability and poor heat dissipation after length adjustment of existing end mills.

[0006] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0007] A combined heat-conducting end mill includes a cutter body and one or more cutter shanks. The cutter body is disposed at one end of the cutter shank, and a cutter holder is provided at the other end of the cutter shank. A snap-fit ​​connection structure is provided between the cutter body and the cutter shank, between the cutter shanks, and between the cutter shank and the cutter holder. The cutter shank also has a heat-conducting and heat-dissipating structure. The snap-fit ​​connection structure is used to adjust the overall length of the combined heat-conducting end mill according to requirements. The heat-conducting and heat-dissipating structure is used for heat conduction and dissipation. The cutter body has a milling structure for providing milling operation.

[0008] As a further improvement, each of the snap-fit ​​connection structures includes a snap-fit ​​structure and a snap-hole structure. The snap-fit ​​structure is respectively disposed on the end of the blade bar and the end of the blade holder. The snap-hole structure is disposed on the end of the blade body and the other end of the blade bar. The snap-fit ​​structure of the blade bar is fastened to the snap-hole structure of the blade body, and the snap-fit ​​structure of the blade holder is fastened to the snap-hole structure of the blade bar.

[0009] As a further improvement, each of the buckle structures includes two or more hooks, and each hook is provided with an elastic connecting part; each of the buckle hole structures includes two or more buckle holes, and each buckle hole is provided with a guide groove, which extends to the top of the blade body and the top of the other end of the blade rod, respectively, and the guide groove is used to guide and insert the hooks.

[0010] As a further improvement, a rectangular positioning hole is provided at the center of the top of the blade body and at the center of the end of the blade shank; a rectangular positioning protrusion is provided at the center of the bottom of the blade holder and at the center of the other end of the blade shank, and the rectangular positioning protrusion is used to cooperate with the rectangular positioning hole.

[0011] As a further improvement, the rectangular positioning hole of the blade body is provided with a groove, and the groove is provided with multiple annularly arranged extension grooves; the rectangular positioning hole of the blade body is provided with a first groove, and the first groove is provided with multiple annularly arranged first extension grooves, the first extension grooves extending to the end face of the rectangular positioning protrusion of the blade body; each of the first extension grooves is provided with multiple arrayed through holes, the through holes extending to the outer wall of the blade shank.

[0012] As a further improvement, the groove is provided with a thermally conductive silicone sheet, the thermally conductive silicone sheet is provided with multiple thermally conductive silicone strips, the thermally conductive silicone strips are respectively disposed in the extension groove and are in contact with the inner wall of the extension groove.

[0013] As a further improvement, the end face of the rectangular positioning protrusion of the blade body is provided with a second groove; the heat conduction and heat dissipation structure includes two first thermally conductive silicone sheets and a heat dissipation silicone layer. The first thermally conductive silicone sheets are respectively disposed in the first groove and the second groove. Multiple first thermally conductive silicone strips are provided between the two first thermally conductive silicone sheets. The multiple first thermally conductive silicone strips are respectively disposed in the first extension groove and are respectively attached to the inner wall of the first extension groove.

[0014] As a further improvement, the outer wall of the tool bar is provided with a third groove, which is connected and communicates with the through hole. The heat dissipation silicone layer is respectively disposed in the third groove. The first thermally conductive silicone strip is provided with multiple thermally conductive silicone contact parts, which are respectively disposed in the through hole. The outer side of the thermally conductive silicone contact part is tightly fitted with the inner wall of the through hole, and the end of the thermally conductive silicone contact part is connected to the heat dissipation silicone layer.

[0015] As a further improvement, the outer wall of the heat-dissipating silicone layer is provided with multiple heat-dissipating grooves.

[0016] As a further improvement, the tool holder is provided with a positioning plane; the milling structure includes multiple milling edges, and a chip removal groove is provided between the milling edges.

[0017] Compared with the prior art, the combined heat-conducting end mill provided in this utility model embodiment has at least one of the following technical effects:

[0018] 1. This utility model uses a snap-fit ​​connection structure to enable quick engagement and disengagement between the cutter body and the cutter shank, and between the cutter shank and the cutter holder, saving operation steps and time, ensuring connection stability. When one component is damaged, only the individual component can be replaced, eliminating the need for overall replacement and reducing maintenance costs. Furthermore, the snap-fit ​​connection structure allows for the combination of two or more cutter shanks to form combined heat-conducting milling cutters of different lengths for machining holes or grooves of different depths, improving applicability and reducing customization costs. The snap-fit ​​connection structure is also simple to operate; disassembly is achieved by simply detaching the snap-fit ​​structure from the snap-hole structure, reducing replacement efficiency.

[0019] 2. By setting a heat-conducting and heat-dissipating structure, the heat conduction and heat dissipation effect and efficiency of the internal heat generated during the machining of the cutter body are improved, preventing the heat from accumulating inside the combined heat-conducting end mill due to machining, reducing the occurrence of chip welding caused by heat, and ensuring the subsequent chip removal effect, milling effect and service life of the combined heat-conducting end mill. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the combined heat-conducting milling cutter in this embodiment;

[0022] Figure 2 This is an exploded view of the combined heat-conducting milling cutter in this embodiment;

[0023] Figure 3 This is a front view schematic diagram of the combined heat-conducting milling cutter in this embodiment;

[0024] Figure 4 for Figure 3 AA section view diagram;

[0025] Figure 5 for Figure 4 Enlarged diagram of A in the middle;

[0026] Figure 6 This is a schematic diagram of the rectangular positioning protrusion and rectangular positioning hole in this embodiment. Detailed Implementation

[0027] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0028] For examples, see the appendix. Figures 1-6 A combined heat-conducting end mill 1 includes a cutter body 2 and one or more cutter shanks 3. The cutter body 2 is disposed at one end of the cutter shank 3, and the other end of the cutter shank 3 is provided with a cutter holder 4. A snap-fit ​​connection structure 5 is provided between the cutter body 2 and the cutter shank 3, between the cutter shanks 3, and between the cutter shank 3 and the cutter holder 4. The cutter shank 3 is also provided with a heat-conducting and heat-dissipating structure 6. The snap-fit ​​connection structure 5 is used to adjust the overall length of the combined heat-conducting end mill 1 according to requirements, and the heat-conducting and heat-dissipating structure 6 is used for heat conduction and dissipation. The cutter body 2 is provided with a milling structure 20, which is used to provide milling operation.

[0029] Each snap-fit ​​connection structure 5 includes a snap-fit ​​structure 50 and a snap-hole structure 51. The snap-fit ​​structure 50 is respectively disposed on the end of the blade shank 3 and the end of the blade holder 4. The snap-hole structure 51 is disposed on the end of the blade body 2 and the other end of the blade shank 3. The snap-fit ​​structure 50 of the blade shank 3 is fastened to the snap-hole structure 51 of the blade body 2, and the snap-fit ​​structure 50 of the blade holder 4 is fastened to the snap-hole structure 51 of the blade shank 3. Each snap-fit ​​structure 50 includes two or more hooks, and each hook has an elastic connecting part. Each snap-hole structure 51 includes two or more holes, and each hole has a guide groove. The guide groove extends to the top of the blade body 2 and the top of the other end of the blade shank 3, respectively. The guide groove is used to guide and insert the hooks, and also provides space for the hooks and elastic connecting parts to be pushed in when disassembling. The snap-fit ​​connection structure 5 allows for detachable connection between the cutter body 2 and the cutter shank 3, and between the cutter shank 3 and the cutter holder 4. When one component is damaged, only the individual component can be replaced, eliminating the need for overall replacement and reducing maintenance costs. Furthermore, the snap-fit ​​connection structure 5 can be used to combine two or more cutter shanks 3 to form combined heat-conducting milling cutters 1 of different lengths for machining holes or grooves of different depths, improving applicability and reducing customization costs. The snap-fit ​​connection structure 5 is also easy to operate; disassembly can be completed by simply detaching the snap-fit ​​structure 50 from the snap-fit ​​hole structure 51, reducing replacement efficiency. To disassemble the snap-fit ​​structure 50, a screwdriver or other tool is used to push the hook inward, causing it to disengage from the snap-fit ​​hole.

[0030] A rectangular positioning hole 52 is provided at the center of the top of the cutter body 2 and at the center of the end of the cutter shank 3. A guide structure is provided at the top of the rectangular positioning hole 52, and the guide structure is composed of multiple inclined arc surfaces. A rectangular positioning protrusion 53 is provided at the center of the bottom of the cutter holder 4 and at the center of the other end of the cutter shank 3. The insertion end of the rectangular positioning protrusion 53 is provided with a first guide structure that cooperates with the guide structure. The first guide structure is composed of multiple inclined arc surfaces. The guide structure and the first guide structure are used for alignment during connection, so that the rectangular positioning protrusion 53 is connected with the rectangular positioning hole 52. The rectangular positioning hole 52 and the rectangular positioning protrusion 53 are used for positioning to ensure that the cutter body 2, the cutter shank 3 and the cutter holder 4 are on the same central axis, and also for limiting the cutting effect of the combined heat-conducting milling cutter 1.

[0031] The rectangular positioning hole 52 of the blade body 2 is provided with a groove, and the groove is provided with multiple annularly arranged extension grooves. The rectangular positioning hole 52 of the blade body 2 is provided with a first groove, and the first groove is provided with multiple annularly arranged first extension grooves, which extend to the end face of the rectangular positioning protrusion 53 of the blade body 2. Each of the first extension grooves is provided with multiple arrayed through holes, which extend to the outer wall of the blade shank 3. The groove is provided with a thermally conductive silicone sheet 21, and the thermally conductive silicone sheet 21 is provided with multiple thermally conductive silicone strips 22. The thermally conductive silicone strips 22 are respectively disposed in the extension grooves and are attached to the inner wall of the extension grooves. The thermally conductive silicone sheet 21 and the thermally conductive silicone strips 22 are used to increase the thermally conductive contact area between the blade body 2 and the blade shank 3, thereby improving the effect and efficiency of heat conduction and heat dissipation inside the blade body 2.

[0032] The rectangular positioning protrusion 53 of the cutter body 2 has a second groove on its end face; the heat conduction and heat dissipation structure 6 includes two first heat conduction silicone sheets 60 and a heat dissipation silicone layer 61. The first heat conduction silicone sheets 61 are respectively disposed in the first groove and the second groove. Multiple first heat conduction silicone strips 600 are disposed between the two first heat conduction silicone sheets 60. The multiple first heat conduction silicone strips 600 are respectively disposed in the first extension groove and are respectively attached to the inner wall of the first extension groove. The heat conduction and heat dissipation structure 6 is used to improve the heat conduction and heat dissipation effect and efficiency of the heat generated inside the cutter body 2 during processing, prevent the heat from accumulating inside the combined heat conduction milling cutter 1 due to processing, reduce the occurrence of chip melting due to heat, and ensure the subsequent chip removal effect, milling effect and service life of the combined heat conduction milling cutter 1.

[0033] The outer wall of each blade holder 3 is provided with a third groove, which is connected to the through hole. The heat dissipation silicone layer 61 is respectively disposed in the third groove. Each of the first thermally conductive silicone strips 600 is provided with a plurality of thermally conductive silicone contact parts 601, which are respectively disposed in the through hole. The outer side of the thermally conductive silicone contact part 601 is in close contact with the inner wall of the through hole. The end of the thermally conductive silicone contact part 601 is connected to the heat dissipation silicone layer 61. The outer wall of the heat dissipation silicone layer 61 is provided with a plurality of heat dissipation grooves 610. The plurality of heat dissipation grooves 610 are arranged in a ring array to form a heat dissipation fin structure. The heat dissipation grooves 610 are used to increase the heat dissipation area of ​​the heat dissipation silicone layer 61, thereby improving the heat dissipation efficiency and effect.

[0034] The tool holder 4 is provided with a positioning plane 40, which is used for mounting and positioning; the milling structure 20 includes multiple milling edges, and chip removal grooves are provided between the milling edges, which is used to provide milling.

[0035] The thermally conductive silicone sheet 21, thermally conductive silicone strip 22, first thermally conductive silicone sheet 60, first thermally conductive silicone strip 600, and thermally conductive silicone contact part 601 are all made by pouring and cooling molten thermally conductive silicone material.

[0036] This invention utilizes a snap-fit ​​connection structure to facilitate quick engagement and disengagement between the cutter body and the cutter shank, and between the cutter shank and the cutter holder. This saves operational steps and time, ensures connection stability, and allows for individual component replacement when one part is damaged, eliminating the need for complete replacement and reducing maintenance costs. Furthermore, the snap-fit ​​connection structure allows for the combination of two or more cutter shanks to create combined heat-conducting end mills of varying lengths for machining holes or grooves of different depths, improving applicability and reducing customization costs. The snap-fit ​​connection structure is also simple to operate; disassembly is achieved by detaching the snap-fit ​​structure from the snap-hole structure, reducing replacement inefficiency. The heat-conducting and heat-dissipating structure enhances the heat dissipation effect and efficiency of the heat generated internally during machining, preventing heat buildup inside the combined heat-conducting end mill and reducing the risk of chip welding due to heat. This ensures effective chip removal, milling performance, and extends the lifespan of the combined heat-conducting end mill.

[0037] This utility model is not limited to the above-described embodiments. Other combined heat-conducting milling cutters obtained by using the same or similar structures or devices as the above-described embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A modular heat conductive milling tool, characterized in that: The combined heat-conducting end mill includes a cutter body and one or more cutter shanks. The cutter body is located at one end of the cutter shank, and a cutter holder is provided at the other end of the cutter shank. A snap-fit ​​connection structure is provided between the cutter body and the cutter shank, between the cutter shanks, and between the cutter shank and the cutter holder. The cutter shank also has a heat-conducting and heat-dissipating structure. The snap-fit ​​connection structure is used to adjust the overall length of the combined heat-conducting end mill according to requirements. The heat-conducting and heat-dissipating structure is used for heat conduction and dissipation. The cutter body has a milling structure, which is used to provide milling operation.

2. The combination heat-conductive milling cutter according to claim 1, characterized in that: The snap-fit ​​connection structure includes a snap-fit ​​structure and a snap-hole structure. The snap-fit ​​structure is respectively disposed on the end of the blade bar and the end of the blade holder. The snap-hole structure is disposed on the end of the blade body and the other end of the blade bar. The snap-fit ​​structure of the blade bar is fastened to the snap-hole structure of the blade body, and the snap-fit ​​structure of the blade holder is fastened to the snap-hole structure of the blade bar.

3. The combination heat-conductive milling cutter according to claim 2, wherein: Each of the snap-fit ​​structures includes two or more hooks, and each hook has an elastic connecting part; each of the snap-hole structures includes two or more snap-holes, and each snap-hole has a guide groove, which extends to the top of the blade body and the top of the other end of the blade rod, respectively, and the guide groove is used to guide and insert the hooks.

4. The combination heat-conductive milling cutter according to claim 3, wherein: A rectangular positioning hole is provided at the center of the top of the blade body and at the center of the end of the blade shank; a rectangular positioning protrusion is provided at the center of the bottom of the blade holder and at the center of the other end of the blade shank, and the rectangular positioning protrusion is used to cooperate with the rectangular positioning hole.

5. The combination heat-conductive milling cutter according to claim 4, wherein: The rectangular positioning hole of the blade body is provided with a groove, and the groove is provided with multiple annularly arranged extension grooves; the rectangular positioning hole of the blade body is provided with a first groove, and the first groove is provided with multiple annularly arranged first extension grooves, the first extension grooves extending to the end face of the rectangular positioning protrusion of the blade body; each of the first extension grooves is provided with multiple arrayed through holes, the through holes extending to the outer wall of the blade shank.

6. The combined heat-conducting end mill according to claim 5, characterized in that: The groove is provided with a thermally conductive silicone sheet, and the thermally conductive silicone sheet is provided with multiple thermally conductive silicone strips. The thermally conductive silicone strips are respectively disposed in the extension groove and are in contact with the inner wall of the extension groove.

7. The combined heat-conducting end mill according to claim 6, characterized in that: The rectangular positioning protrusion of the blade body has a second groove on its end face; the heat conduction and heat dissipation structure includes two first thermally conductive silicone sheets and a heat dissipation silicone layer. The first thermally conductive silicone sheets are respectively disposed in the first groove and the second groove. Multiple first thermally conductive silicone strips are disposed between the two first thermally conductive silicone sheets. The multiple first thermally conductive silicone strips are respectively disposed in the first extension groove and are respectively attached to the inner wall of the first extension groove.

8. The combination heat-conductive milling cutter according to claim 7, characterized in that: The outer wall of each tool holder is provided with a third groove, which is connected to the through hole. The heat dissipation silicone layer is respectively disposed in the third groove. The first thermally conductive silicone strip is provided with multiple thermally conductive silicone contact parts, which are respectively disposed in the through hole. The outer side of the thermally conductive silicone contact part is tightly fitted with the inner wall of the through hole, and the end of the thermally conductive silicone contact part is connected to the heat dissipation silicone layer.

9. The modular heat conductive milling cutter of claim 8, wherein: The outer wall of the heat-dissipating silicone layer is provided with multiple heat-dissipating grooves.

10. The combination heat-conductive milling cutter according to claim 9, wherein: The tool holder is provided with a positioning plane; the milling structure includes multiple milling edges, and chip removal grooves are provided between the milling edges.

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