A high-efficiency, high-precision and long-life three-fluted milling cutter

Abstract

The utility model discloses a kind of high-efficiency high-precision long-life three-flank milling cutter, including the integrated molding tool holder and shank from top to bottom;The outer ring surface of tool holder is provided with second tool head, multiple are arranged along the surface of tool holder and are surrounded by second tool head, the outer ring surface of tool holder and located at the side of each second tool head is provided with first tool head, the outer ring surface of tool holder and located between multiple second tool heads and multiple first tool heads is provided with interval groove, one end of second tool head is provided with second PCD blade, one end of first tool head is provided with first PCD blade.The utility model is through the design of multiple first tool heads and multiple second tool heads, compared with traditional tool, single blade cutting load dispersion, reduce the wear and tear pressure of single blade, to realize the effect of wear and tear minimum, suitable for precision slot processing, compared with traditional PDC tool and simultaneously, multiple blades can participate in cutting simultaneously, more cutting amount can be completed in unit time, realize efficient processing.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal processing technology, and in particular to a high-efficiency, high-precision, and long-life three-sided milling cutter. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the cutting teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0003] Currently, carbide cutting tools wear out quickly, and a single tool can typically only process a few dozen workpieces, requiring frequent tool changes. This process interrupts the machining flow, significantly reducing overall production efficiency. Furthermore, as the tool wears, the width of the machined groove gradually increases, making it impossible to guarantee the dimensional accuracy of the workpiece, which in turn affects subsequent assembly accuracy. The cutting speed is also limited, preventing high-speed cutting and resulting in low machining efficiency. Traditional PCD cutting tools, on the other hand, use a welded structure, which is prone to chipping during high-speed milling, affecting the continuity and safety of machining. Moreover, the accuracy of the cutting edge is difficult to guarantee, failing to meet the requirements of high-precision machining. In addition, the manufacturing process is complex and costly, making it difficult to widely apply in actual production and limiting its scope of application.

[0004] Therefore, there is an urgent need for a three-sided milling cutter to rapidly process non-ferrous metals. This three-sided milling cutter should have the advantages of high life, high precision and high surface quality. Furthermore, the milling cutter can achieve the effect of minimizing wear and increasing processing speed by distributing the load of each single edge through a multi-edge design. Utility Model Content

[0005] To meet the above requirements, this utility model provides a high-efficiency, high-precision, and long-life three-sided end mill to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model achieves the following technical solution: a high-efficiency, high-precision, and long-life three-sided end mill, comprising a tool holder and a tool shank integrally formed from top to bottom; a second cutting head is provided on the outer ring surface of the tool holder, and multiple second cutting heads are spaced around the surface of the tool holder; a first cutting head is provided on the outer ring surface of the tool holder on one side of each second cutting head; a spacing groove is formed on the outer ring surface of the tool holder between the multiple second cutting heads and the multiple first cutting heads; a second PCD insert capable of cutting non-ferrous metals is provided at one end of the second cutting head; a second upper chip guide groove is formed on the upper surface of the second cutting head, and a second lower chip guide groove is formed on the lower surface of the second cutting head; a first PCD insert capable of cutting non-ferrous metals is provided at one end of the first cutting head; a first upper chip guide groove is formed on the upper surface of the first cutting head, and a first lower chip guide groove is formed on the lower surface of the first cutting head; a second liquid outlet is formed at the top of the spacing groove on one side of the second PCD insert, and a first liquid outlet is formed at the top of the spacing groove on one side of the first PCD insert.

[0007] Furthermore, the handle has a flow cavity inside, the tail of the handle has a liquid inlet hole communicating with the flow cavity, the front end of the surface of the flow cavity has a first flow hole, the front end of the first flow hole extends into the interior of the tool holder, the interior of the tool holder has a heat dissipation cavity communicating with the first flow hole, and the surface of the heat dissipation cavity has a plurality of connecting holes communicating with a plurality of second liquid outlet holes and a plurality of first liquid outlet holes respectively.

[0008] Furthermore, the heat dissipation cavity is arranged in a ring shape, and the heat dissipation cavity is located on the outer ring of the top of the first flow hole.

[0009] Furthermore, the handle is composed of a hand grip, a connecting part, and a mounting part. The mounting part is fixedly mounted on the bottom end of the hand grip, the connecting part is fixedly mounted on the top end of the hand grip, and the top end of the connecting part is fixedly connected to the lower surface of the blade holder.

[0010] Furthermore, the diameter of the connecting part is smaller than the diameter of the handheld part, and a chamfered ring is provided at the junction of the connecting part and the handheld part.

[0011] Furthermore, both the connecting portion and the handheld portion have a smooth surface design.

[0012] Furthermore, the length of the second PCD blade is greater than the thickness of the second cutting head, and the surfaces of the second upper chip guide groove and the second lower chip guide groove are both designed to be smooth.

[0013] Furthermore, the length of the first PCD blade is greater than the thickness of the first cutting head, and the surfaces of the first lower chip guide groove and the first upper chip guide groove are designed to be smooth.

[0014] Furthermore, the surface of the spacer groove is designed to be smooth.

[0015] The beneficial technical effects of this utility model are: 1. This high-efficiency, high-precision, and long-life three-sided end mill, through the design of multiple first and second cutting edges, allows the tool to be equipped with multiple first and second PCD inserts for machining non-ferrous metals. Compared with traditional tools, the multi-edge structure of this tool, combined with the PCD material, disperses the cutting load of each cutting edge, reducing the wear pressure of a single edge and thus achieving minimal wear. It is suitable for precision groove machining. Furthermore, compared with traditional PDC tools and carbide tools, the multi-edge design in this application allows multiple cutting edges to participate in cutting simultaneously, completing a greater cutting amount per unit time. Combined with the high-speed cutting characteristics allowed by the PCD material, it significantly improves the machining speed and achieves high-efficiency machining.

[0016] 2. This high-efficiency, high-precision, and long-life three-sided end mill, by setting a second and a first fluid outlet, allows the cutting fluid to enter the inner cavity of the flow chamber through the inlet hole after the tool is installed with the machining center. Subsequently, it enters the inner cavity of the heat dissipation chamber through the first flow hole, increasing the contact time between the cutting fluid and the tool holder. While fully dissipating heat from the tool holder, the cutting fluid continues to reach the first and second fluid outlet holes through the connecting holes, respectively lubricating and dissipating heat from the first and second PCD inserts. This achieves efficient heat dissipation and avoids the problem of reduced machining accuracy due to tool thermal deformation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a front view schematic diagram of the structure of this utility model; Figure 3 This is a three-dimensional cross-sectional schematic diagram of the flow cavity and liquid inlet of this utility model; Figure 4 This is a three-dimensional cross-sectional schematic diagram of the liquid inlet hole and the connecting hole of this utility model; Figure 5 This is a top view schematic diagram of the structure of this utility model.

[0018] The numbers and letters in the diagram represent the names of the corresponding components: 1. Tool holder; 11. Handheld part; 12. Connecting part; 13. Mounting part; 2. Tool holder; 3. First tool head; 31. First PCD blade; 32. First liquid outlet; 33. First lower chip guide groove; 34. First upper chip guide groove; 4. Second tool head; 41. Second PCD blade; 42. Second liquid outlet; 43. Second lower chip guide groove; 44. Second upper chip guide groove; 5. Flow chamber; 51. First flow hole; 52. Liquid inlet hole; 6. Heat dissipation chamber; 61. Connecting hole; 7. Spacer groove. Detailed Implementation

[0019] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] See appendix Figures 1-5 As shown in Embodiment 1, a high-efficiency, high-precision, and long-life three-sided end mill includes a tool holder 2 and a tool shank 1 integrally formed from top to bottom. A second cutting head 4 is provided on the outer ring surface of the tool holder 2, and multiple second cutting heads 4 are spaced around the surface of the tool holder 2. A first cutting head 3 is provided on one side of each second cutting head 4 on the outer ring surface of the tool holder 2. Spacing grooves 7 are formed between the multiple second cutting heads 4 and the multiple first cutting heads 3 on the outer ring surface of the tool holder 2, and the surfaces of the spacing grooves 7 are smooth. A second PCD insert 41 capable of cutting non-ferrous metals is provided at one end of each second cutting head 4, and a first PCD insert 31 capable of cutting non-ferrous metals is provided at one end of each first cutting head 3.

[0021] By employing a design with multiple first cutting heads 3 and multiple second cutting heads 4, this tool can be equipped with multiple first PCD inserts 31 and second PCD inserts 41 to process non-ferrous metals. Compared to traditional tools, the multi-edge structure of this tool, combined with the PCD material, disperses the cutting load of each cutting edge, reducing the wear pressure on a single edge and thus achieving minimal wear. This makes it suitable for precision groove machining. Compared to traditional PDC tools, the design of multiple second PCD inserts 41 and first PCD inserts 31 participating in cutting simultaneously allows for a greater cutting volume per unit time. Combined with the high-speed cutting characteristics allowed by the PCD material, this significantly improves machining speed and achieves high-efficiency machining.

[0022] The upper surface of the second cutting head 4 is provided with a second upper chip guide groove 44, and the lower surface of the second cutting head 4 is provided with a second lower chip guide groove 43. The length of the second PCD blade 41 is greater than the thickness of the second cutting head 4. The surfaces of the second upper chip guide groove 44 and the second lower chip guide groove 43 are both designed to be smooth. The upper surface of the first cutting head 3 is provided with a first upper chip guide groove 34, and the lower surface of the first cutting head 3 is provided with a first lower chip guide groove 33. The length of the first PCD blade 31 is greater than the thickness of the first cutting head 3. The surfaces of the first lower chip guide groove 33 and the first upper chip guide groove 34 are designed to be smooth.

[0023] The first lower chip guide groove 33, the first upper chip guide groove 34, the second lower chip guide groove 43, and the second upper chip guide groove 44 are all designed with an inclined shape, and their smooth surfaces can better guide and discharge the cut chips.

[0024] The spacer groove 7 has a second liquid outlet hole 42 on the top of one side of the second PCD blade 41, and a first liquid outlet hole 32 on the top of one side of the spacer groove 7. The tool holder 1 has a flow cavity 5 inside, and a liquid inlet hole 52 connected to the flow cavity 5 is opened at the tail of the tool holder 1. A first flow hole 51 is opened at the front end of the surface of the flow cavity 5. The front end of the first flow hole 51 extends into the interior of the tool holder 2. A heat dissipation cavity 6 connected to the first flow hole 51 is opened inside the tool holder 2. A plurality of connecting holes 61 connected to a plurality of second liquid outlet holes 42 and a plurality of first liquid outlet holes 32 are opened on the surface of the heat dissipation cavity 6. The heat dissipation cavity 6 is arranged in a ring shape and is located on the outer ring of the top of the first flow hole 51.

[0025] By setting the second liquid outlet 42 and the first liquid outlet 32, after the tool is installed with the machining center, the cutting fluid enters the inner cavity of the flow chamber 5 through the liquid inlet 52, and then enters the inner cavity of the heat dissipation chamber 6 through the first flow hole 51. This increases the contact time between the cutting fluid and the tool holder 2, allowing for sufficient heat dissipation of the tool holder 2. At the same time, the cutting fluid continues to reach the first liquid outlet 32 ​​and the second liquid outlet 42 through the connecting hole 61, respectively lubricating and dissipating heat for the first PCD insert 31 and the second PCD insert 41. This achieves efficient heat dissipation and prevents the tool from undergoing thermal deformation, which could lead to a decrease in machining accuracy.

[0026] Furthermore, the handle 1 is composed of a hand-held part 11, a connecting part 12, and a mounting part 13. The mounting part 13 is fixedly mounted on the bottom end of the hand-held part 11, and the connecting part 12 is fixedly mounted on the top end of the hand-held part 11. The top end of the connecting part 12 is fixedly connected to the lower surface of the tool holder 2. The diameter of the connecting part 12 is smaller than the diameter of the hand-held part 11, and a chamfered ring is provided at the junction of the connecting part 12 and the hand-held part 11. The surfaces of the connecting part 12 and the hand-held part 11 are both designed to be smooth.

[0027] The integrated design of the tool holder 1 and the tool base 2 reduces the manufacturing cost of the tool. Furthermore, the smooth design of the hand grip 11, the connecting part 12, and the mounting part 13 reduces the amount of cutting fluid adsorbed on the surface of the tool holder 1 and also reduces the difficulty of cleaning.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A high-efficiency, high-precision, and long-life three-sided end mill, characterized in that: It includes a tool holder (2) and a tool handle (1) that are integrally formed from top to bottom; The outer ring surface of the tool holder (2) is provided with a second cutting head (4). Multiple second cutting heads (4) are arranged around the surface of the tool holder (2) at intervals. A first cutting head (3) is provided on one side of each second cutting head (4) on the outer ring surface of the tool holder (2). A gap groove (7) is provided between the multiple second cutting heads (4) and the multiple first cutting heads (3) on the outer ring surface of the tool holder (2). The second cutter head (4) is provided with a second PCD blade (41) capable of cutting non-ferrous metals at one end. The upper surface of the second cutter head (4) is provided with a second upper chip guide groove (44), and the lower surface of the second cutter head (4) is provided with a second lower chip guide groove (43). The first cutter head (3) is provided with a first PCD blade (31) capable of cutting non-ferrous metals at one end. The upper surface of the first cutter head (3) is provided with a first upper chip guide groove (34), and the lower surface of the first cutter head (3) is provided with a first lower chip guide groove (33). The spacer groove (7) is provided with a second liquid outlet hole (42) at the top of one side of the second PCD blade (41), and the spacer groove (7) is provided with a first liquid outlet hole (32) at the top of one side of the first PCD blade (31).

2. The high-efficiency high-precision long-life triple-wiper milling cutter according to claim 1, characterized by The handle (1) has a flow cavity (5) inside, and the tail of the handle (1) has a liquid inlet hole (52) connected to the flow cavity (5). The front end of the surface of the flow cavity (5) has a first flow hole (51) extending to the interior of the knife holder (2). The interior of the knife holder (2) has a heat dissipation cavity (6) connected to the first flow hole (51). The surface of the heat dissipation cavity (6) has multiple connecting holes (61) connected to multiple second liquid outlet holes (42) and multiple first liquid outlet holes (32).

3. The high-efficiency high-precision long-life triple-wiper milling cutter according to claim 2, characterized by The heat dissipation cavity (6) is arranged in a circular shape, and the heat dissipation cavity (6) is located on the outer ring of the top of the first flow hole (51).

4. The high-efficiency high-precision long-life triple-wiper milling cutter according to claim 1, characterized by The handle (1) is composed of a hand-held part (11), a connecting part (12) and a mounting part (13). The mounting part (13) is fixedly installed at the bottom end of the hand-held part (11), and the connecting part (12) is fixedly installed at the top end of the hand-held part (11). The top end of the connecting part (12) is fixedly connected to the lower surface of the knife holder (2).

5. The high-efficiency high-precision long-life triple-wiper milling cutter according to claim 4, characterized by The diameter of the connecting part (12) is smaller than the diameter of the handheld part (11), and a chamfered ring is provided at the junction of the connecting part (12) and the handheld part (11).

6. The high-efficiency, high-precision, and long-life three-sided end mill according to claim 4, characterized in that, The surfaces of both the connecting part (12) and the handheld part (11) are designed to be smooth.

7. The high-efficiency, high-precision, and long-life triple-wiper milling cutter according to claim 1, characterized by The length of the second PCD blade (41) is greater than the thickness of the second cutter head (4), and the surfaces of the second upper chip guide groove (44) and the second lower chip guide groove (43) are both designed to be smooth.

8. The high-efficiency, high-precision, and long-life triple-wiper milling cutter according to claim 1, characterized by The length of the first PCD blade (31) is greater than the thickness of the first cutter head (3), and the surfaces of the first lower chip guide groove (33) and the first upper chip guide groove (34) are designed to be smooth.

9. The high-efficiency high-precision long-life triple-wiper milling cutter according to claim 1, characterized by The surface of the spacer groove (7) is designed to be smooth.

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