Milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, and particularly relates to a milling cutter which comprises a cutter handle and a cutter body, the cutter body is connected with the cutter handle, cutter teeth are arranged on the periphery of the cutter body and extend in the length direction of the cutter body, each cutter tooth comprises a first working section, a second working section and a third working section, the second working section is located between the first working section and the third working section, the third working section is connected with the cutter handle, the third working section is used for milling the side face of a boss on a workpiece, and the second working section is used for milling the edge of the end face of the boss to form a fillet. And the first working section is used for milling and forming a chamfer at the corner of the boss and the workpiece body. The first working section, the second working section and the third working section are designed in an integrated mode, when the boss on the workpiece is subjected to finish machining, a cutter does not need to be replaced, machining is convenient, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of milling technology, and in particular relates to a milling cutter. Background Technology

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

[0003] A milling cutter is provided, comprising a shank, a cutter body, and cutting teeth. The cutter body is connected to the shank, and the cutting teeth are disposed on the outer periphery of the cutter body. The cutting teeth have cutting edges on the side facing away from the cutter body. The shank is used to connect to a machine tool, and the machine tool drives the shank to rotate, thereby causing the cutter body to rotate. When the cutter body rotates, the cutting edges of the cutting teeth mill the workpiece, thereby forming a surface of a predetermined shape on the workpiece.

[0004] However, when performing finishing on bosses on a workpiece, existing milling cutters require milling the side of the boss (the surface of the boss facing away from the workpiece body) to finish the side of the boss. An internal radius milling cutter is used to form rounded corners at both ends of the boss (the edges of the end faces of the boss). A chamfering milling cutter is used to form a chamfer between the rounded corners and the workpiece surface (the corner between the end face and the workpiece body) to process the cross-section at both ends of the boss. This requires changing the type of milling cutter multiple times, making the process cumbersome. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: to provide a milling cutter that is troublesome to process when using existing milling cutters to finish the bosses on the workpiece by changing the type of milling cutter multiple times.

[0006] To solve the above-mentioned technical problems, this utility model provides a milling cutter, including a shank and a cutter body. The cutter body is connected to the shank, and the outer periphery of the cutter body is provided with cutting teeth. The cutting teeth extend along the length direction of the cutter body, and the cutting teeth include a first working section, a second working section and a third working section. The second working section is located between the first working section and the second working section, and the third working section is connected to the shank.

[0007] The third working section is used to mill the side of the boss of the workpiece, the second working section is used to mill the edge of the first end face of the boss to form a rounded corner, and the first working section is used to mill the first corner of the boss and the workpiece body to form a chamfer.

[0008] Optionally, the top of the first working section has a first cutting edge and a second cutting edge, the first cutting edge extends along the length direction of the blade body, the second cutting edge is inclined, and the bottom end of the second cutting edge is closer to the handle than the top end;

[0009] The first cutting edge is used to cut the workpiece body, and the second cutting edge is used to cut the first end face of the boss.

[0010] Optionally, the top of the second working section has a third cutting edge, which is arc-shaped. The bottom end of the third cutting edge is closer to the tool holder than the top end. The top end of the third cutting edge is connected to the bottom end of the second cutting edge. The third cutting edge is used to cut the edge of the first end face of the boss.

[0011] Optionally, the top of the third working section has a fourth cutting edge, which is parallel to the first cutting edge. The end of the fourth cutting edge near the first cutting edge is connected to the bottom end of the third cutting edge. The fourth cutting edge is used to cut the side of the boss.

[0012] Optionally, the cutting tooth further includes a fourth working section and a fifth working section. The fourth working section is connected to the tool holder, and the fifth working section is located between the third working section and the fourth working section. The fifth working section is used to mill a rounded corner on the edge of the second end face of the boss, and the fourth working section is used to mill a chamfer at the second corner between the boss and the workpiece body.

[0013] Optionally, the top of the fourth working section has a fifth cutting edge and a sixth cutting edge, the fifth cutting edge extends along the length direction of the handle, the sixth cutting edge is inclined, and the top end of the sixth cutting edge is closer to the handle than the bottom end;

[0014] The fifth cutting edge is used to cut the workpiece body, and the sixth cutting edge is used to cut the second end face of the boss.

[0015] Optionally, the top of the fifth working section has a seventh cutting edge, which is arc-shaped. The top end of the seventh cutting edge is closer to the tool holder than the bottom end. The top end of the seventh cutting edge is connected to the bottom end of the sixth cutting edge, and the bottom end of the seventh cutting edge is connected to the end of the fourth cutting edge away from the first working section. The seventh cutting edge is used to cut the edge of the second end face of the boss.

[0016] Optionally, the cutting teeth are provided in multiples, and the multiple cutting teeth are arranged at intervals on the cutting body, with a chip removal groove provided between any two adjacent cutting teeth.

[0017] Optionally, the width between any two adjacent chip removal slots is the same.

[0018] Optionally, a chip removal groove is provided on the outer periphery of the tool holder, the chip removal groove extends along the length direction of the tool holder, and the chip removal groove communicates with the chip discharge groove.

[0019] According to the milling cutter of this utility model embodiment, when the cutter holder is driven by the machine tool to rotate the cutter body, the third working section mills the side of the boss on the workpiece to improve the accuracy of the side of the boss. The second working section cuts the edge of the end face of the boss to process the edge of the end face of the boss into a rounded corner. The first working section cuts the corner between the boss and the workpiece body to process a chamfer. Compared with the prior art, the first working section, the second working section and the third working section are integrated into a design. When performing finishing on the boss on the workpiece, it is not necessary to change the tool, which facilitates processing and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a milling cutter provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of a partial structure;

[0022] Figure 3 This is a schematic diagram of a boss machined by a milling cutter according to an embodiment of the present invention;

[0023] Figure 4 for Figure 3 Another perspective.

[0024] The reference numerals in the accompanying drawings are as follows: 1. Tool holder; 2. Tool body; 3. Tool teeth; 4. Chip groove; 5. Chip outlet groove; 6. First working section; 7. First cutting surface; 8. First cutting edge; 9. Second cutting edge; 10. Second working section; 11. Second cutting surface; 12. Third cutting edge; 13. Third working section; 14. Third cutting surface; 15. Fourth cutting edge; 16. Fourth working section; 17. Fourth cutting surface; 18. Fifth cutting edge; 19. Sixth cutting edge; 20. Fifth working section; 21. Fifth cutting surface; 22. Seventh cutting edge; 23. Workpiece; 24. Workpiece body; 25. Boss; 26. First end face; 27. Second end face. Detailed Implementation

[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a milling cutter, including a shank 1 and a cutter body 2. The cutter body 2 is connected to the shank 1. The outer periphery of the cutter body 2 is provided with cutting teeth 3, which extend along the length direction of the cutter body 2. The cutting teeth 3 include a first working section 6, a second working section 10 and a third working section 13. The second working section 10 is located between the first working section 6 and the second working section 10. The third working section 13 is connected to the shank 1.

[0027] The third working section 13 is used to mill the side of the boss 25 of the workpiece 23, the second working section 10 is used to mill the edge of the first end face 26 of the boss 25 to form a rounded corner, and the first working section 6 is used to mill the first corner of the boss 25 and the workpiece body 24 of the workpiece 23 to form a chamfer.

[0028] Specifically, when finishing the boss 25 on the workpiece 23, the tool holder 1 is connected to the machine tool, so that the milling cutter is located on the side of the workpiece 23 where the boss 25 is located. The machine tool drives the tool holder 1 to rotate, and the tool holder 1 drives the cutter body 2 to rotate. When the cutter body 2 rotates, the third working section 13 mills the side of the boss 25 on the workpiece 23 to improve the accuracy of the side of the boss 25. The second working section 10 cuts the edge of the first end face 26 of the boss 25 to process the edge of the first end face 26 of the boss 25 into a rounded corner. The first working section 6 cuts the first corner between the boss 25 and the workpiece body 24 to process a chamfer, thereby forming the finished boss 25 as shown in the figure. The first working section 6, the second working section 10 and the third working section 13 are integrated into the design. When finishing the boss 25 on the workpiece 23, it is not necessary to change the tool, which facilitates processing and improves work efficiency.

[0029] In one embodiment, the top of the first working section 6 has a first cutting edge 8 and a second cutting edge 9. The first cutting edge 8 extends along the length direction of the blade body 2, and the second cutting edge 9 is inclined. The bottom end of the second cutting edge 9 is closer to the handle 1 than the top end.

[0030] The first cutting edge 8 is used to cut the workpiece body 24, and the second cutting edge 9 is used to cut the first end face 26 of the boss 25.

[0031] Specifically, the top of the first working section 6 is provided with a first cutting surface 7. One side of the width direction of the first cutting surface 7 is higher than the other side. The width edge of the higher side forms a first cutting edge 8 and a second cutting edge 9. The first cutting edge 8 extends along the length direction of the cutter body 2. When the milling cutter operates on the boss 25, the first cutting edge 8 contacts the side of the workpiece body 24 where the boss 25 is provided, so that the first cutting edge 8 mills the side of the workpiece body 24 where the boss 25 is provided, thereby improving the accuracy of the side of the workpiece 23.

[0032] The end of the second cutting edge 9 away from the tool holder 1 is connected to the first cutting edge 8. The second cutting edge 9 is inclined, and the bottom end of the second cutting edge 9 is closer to the tool holder 1 than the top end. When the milling cutter operates on the boss 25, the second cutting edge 9 contacts the first end face 26 of the boss 25. The second cutting edge 9 mills the first end face 26 of the boss 25 to form a machining surface parallel to the second cutting edge 9 on the first end face 26 of the boss 25. A chamfer is machined at the first corner between the first end face 26 of the boss 25 and the workpiece body 24. The size of the included angle formed between the first cutting edge 8 and the second cutting edge 9 is the size of the chamfer between the boss 25 and the workpiece body 24 after finishing.

[0033] In one embodiment, the top of the second working section 10 has a third cutting edge 12, which is arc-shaped. The bottom end of the third cutting edge 12 is closer to the handle 1 than the top end. The top end of the third cutting edge 12 is connected to the bottom end of the second cutting edge 9. The third cutting edge 12 is used to cut the edge of the first end face 26 of the boss 25.

[0034] Specifically, the top of the second working section 10 has a second cutting surface 11. The second cutting surface 11 is an arc surface with its arc opening facing away from the cutter body 2. One side of the second cutting surface 11 is higher than the other side in the width direction. The edge of the higher side forms a third cutting edge 12. The third cutting edge 12 is arc-shaped. The end of the third cutting edge 12 away from the tool holder 1 is connected to the bottom end of the second cutting edge 9. When the milling cutter operates on the boss 25, the third cutting edge 12 contacts the edge of the first end face 26 of the boss 25. The third cutting edge 12 mills the edge of the first end face 26 of the boss 25 to form a rounded corner on the edge of the first end face 26 of the boss 25. The top end of the rounded corner is connected to the bottom end of the chamfer. The bottom end of the rounded corner extends to the side of the boss 25 to achieve the finishing of the first end face 26 of the boss 25.

[0035] In one embodiment, the top of the third working section 13 has a fourth cutting edge 15, which is parallel to the first cutting edge 8. The end of the fourth cutting edge 15 near the first cutting edge 8 is connected to the bottom end of the third cutting edge 12. The fourth cutting edge 15 is used to cut the side of the boss 25.

[0036] Specifically, the top of the third working section 13 has a third cutting surface 14. One side of the third cutting surface 14 is higher than the other side in the width direction. The edge of the higher side forms a fourth cutting edge 15. The fourth cutting edge 15 is parallel to the first cutting edge 8. When the milling cutter works on the boss 25, the fourth cutting edge 15 contacts the side of the boss 25, so that the fourth cutting edge 15 mills the side of the boss 25 to improve the accuracy of the side of the boss 25.

[0037] In one embodiment, the cutting tooth 3 further includes a fourth working section 16 and a fifth working section 20. The fourth working section 16 is connected to the tool holder 1, and the fifth working section 20 is located between the third working section 13 and the fourth working section 16. The fifth working section 20 is used to mill a rounded corner on the edge of the second end face 27 of the boss 25, and the fourth working section 16 is used to mill a chamfer at the second corner between the boss 25 and the workpiece body 24.

[0038] The top of the fourth working section 16 has a fifth cutting edge 18 and a sixth cutting edge 19. The fifth cutting edge 18 extends along the length direction of the handle 1, and the sixth cutting edge 19 is inclined. The top end of the sixth cutting edge 19 is closer to the handle 1 than the bottom end.

[0039] The fifth cutting edge 18 is used to cut the workpiece body 24, and the sixth cutting edge 19 is used to cut the second end face 27 of the boss 25.

[0040] The top of the fifth working section 20 has a seventh cutting edge 22, which is arc-shaped. The top end of the seventh cutting edge 22 is closer to the handle 1 than the bottom end. The top end of the seventh cutting edge 22 is connected to the bottom end of the sixth cutting edge 19, and the bottom end of the seventh cutting edge 22 is connected to the end of the fourth cutting edge 15 away from the first working section 6. The seventh cutting edge 22 is used to cut the edge of the second end face 27 of the boss 25.

[0041] Specifically, the top of the fourth working section 16 is provided with a fourth cutting surface 17. One side of the fourth cutting surface 17 is higher than the other side in the width direction. The width edge of the higher side forms a fifth cutting edge 18 and a sixth cutting edge 19. The fifth cutting edge 18 extends along the length direction of the cutter body 2. When the milling cutter operates on the boss 25, the fifth cutting edge 18 contacts the side of the workpiece body 24 where the boss 25 is provided, so that the fifth cutting edge 18 mills the side of the workpiece body 24 where the boss 25 is provided, thereby improving the accuracy of that side of the workpiece body 24.

[0042] The sixth cutting edge 19 is connected to the fifth cutting edge 18 at one end near the tool holder 1. The sixth cutting edge 19 is inclined and its top end is closer to the tool holder 1 than its bottom end. When the milling cutter operates on the boss 25, the sixth cutting edge 19 contacts the second end face 27 of the boss 25. The sixth cutting edge 19 mills the second end face 27 of the boss 25 to form a machining surface parallel to the sixth cutting edge 19 on the second end face 27 of the boss 25. Another chamfer is machined at the second corner of the end face and the workpiece body 24. The size of the included angle formed between the fifth cutting edge 18 and the sixth cutting edge 19 is the size of the other chamfer between the boss 25 and the workpiece 23 after finishing.

[0043] The top of the fifth working section 20 has a fifth cutting surface 21. The fifth cutting surface 21 is an arc surface with its arc opening facing away from the cutter body 2. One side of the fifth cutting surface 21 is higher than the other side in the width direction. The edge of the higher side forms a seventh cutting edge 22. The seventh cutting edge 22 is arc-shaped. The arc opening of the seventh cutting edge 22 is opposite to the arc opening of the third cutting edge 12. The end of the seventh cutting edge 22 near the tool holder 1 is connected to the bottom end of the sixth cutting edge 19. When the milling cutter operates on the boss 25, the seventh cutting edge 22 contacts the edge of the second end face 27 of the boss 25. The seventh cutting edge 22 mills the edge of the second end face 27 of the boss 25 to form a rounded corner on the edge of the second end face 27 of the boss 25. The bottom end of the rounded corner is connected to the top end of the chamfer. The top end of the rounded corner extends to the side of the boss 25 to achieve the finishing of the other end face of the boss 25.

[0044] In one embodiment, there are multiple cutting teeth 3, which are arranged at intervals on the cutter body 2, and a chip removal groove 4 is provided between any two adjacent cutting teeth 3.

[0045] Specifically, there are multiple cutting teeth 3, which are arranged at intervals on the cutter body 2. A chip removal groove 4 is provided between any two adjacent cutting teeth 3, and the width of any two adjacent chip removal grooves 4 is the same to facilitate chip removal.

[0046] In one embodiment, a chip discharge groove 5 is provided on the outer periphery of the tool holder 1. The chip discharge groove 5 extends along the length direction of the tool holder 1 and is connected to the chip removal groove 4.

[0047] Specifically, the outer periphery of the tool holder 1 is provided with a chip discharge groove 5 extending along the length direction of the tool holder 1. The chip discharge groove 5 is connected to the chip removal groove 4. When the milling cutter is operating, the chips generated by cutting the workpiece 23 are discharged through the chip removal groove 4 and the chip discharge groove 5.

[0048] The working principle of the milling cutter in this embodiment is as follows: When the milling cutter operates on the boss 25, the first cutting edge 8 contacts the side of the workpiece body 24 where the boss 25 is located, thereby milling the side of the workpiece body 24 where the boss 25 is located by the first cutting edge 8, so as to improve the accuracy of the side of the workpiece body 24. The second cutting edge 9 contacts the first end face 26 of the boss 25, and the second cutting edge 9 mills the end face, and a chamfer is processed at the first corner where the end face of the boss 25 meets the workpiece body 24. The third cutting edge 12 mills the boss. The edge of the end face of boss 25 is milled to form a rounded corner on the edge of the end face of boss 25. The fourth cutting edge 15 mills the side of boss 25. The fifth cutting edge 18 mills the side of workpiece body 24 on which boss 25 is provided. The sixth cutting edge 19 mills the second end face 27 of boss 25, and a second chamfer is machined at the second corner of the end face and workpiece body 24. The seventh cutting edge 22 mills the edge of the second end face 27 of boss 25 to form a rounded corner on the edge of the second end face 27 of boss 25, thus forming a rounded corner. Figure 3 and Figure 4 The shape of the boss 25 shown.

[0049] According to the milling cutter of this utility model embodiment, when the tool holder 1 is driven by the machine tool to rotate the tool body 2, the third working section 13 mills the side of the boss 25 on the workpiece 23 to improve the accuracy of the side of the boss 25. The second working section 10 cuts the edge of the end face of the boss 25 to process the edge of the end face of the boss 25 into a rounded corner. The first working section 6 cuts the corner between the boss 25 and the workpiece body 24 to process a chamfer. Compared with the prior art, the first working section 6, the second working section 10 and the third working section 13 are integrated into a design. When performing finishing on the boss 25 on the workpiece 23, it is not necessary to change the tool, which facilitates processing and improves work efficiency.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling cutter, characterized in that, It includes a handle (1) and a blade (2), the blade (2) being connected to the handle (1), and the outer periphery of the blade (2) being provided with cutting teeth (3), the cutting teeth (3) extending along the length direction of the blade (2), the cutting teeth (3) including a first working section (6), a second working section (10) and a third working section (13), the second working section (10) being located between the first working section (6) and the second working section (10), and the third working section (13) being connected to the handle (1); The third working section (13) is used to mill the side of the boss (25) of the workpiece (23), the second working section (10) is used to mill the edge of the first end face (26) of the boss (25) to form a rounded corner, and the first working section (6) is used to mill the first corner of the boss (25) and the workpiece body (24) of the workpiece (23) to form a chamfer.

2. The milling cutter according to claim 1, characterized in that, The top of the first working section (6) has a first cutting edge (8) and a second cutting edge (9). The first cutting edge (8) extends along the length direction of the blade body (2), and the second cutting edge (9) is inclined. The bottom end of the second cutting edge (9) is closer to the handle (1) than the top end. The first cutting edge (8) is used to cut the workpiece body (24), and the second cutting edge (9) is used to cut the first end face (26) of the boss (25).

3. The milling cutter according to claim 2, characterized in that, The second working section (10) has a third cutting edge (12) at the top. The third cutting edge (12) is arc-shaped. The bottom end of the third cutting edge (12) is closer to the handle (1) than the top end. The top end of the third cutting edge (12) is connected to the bottom end of the second cutting edge (9). The third cutting edge (12) is used to cut the edge of the first end face (26) of the boss (25).

4. The milling cutter according to claim 3, characterized in that, The top of the third working section (13) has a fourth cutting edge (15), which is parallel to the first cutting edge (8). The end of the fourth cutting edge (15) near the first cutting edge (8) is connected to the bottom end of the third cutting edge (12). The fourth cutting edge (15) is used to cut the side of the boss (25).

5. The milling cutter according to claim 4, characterized in that, The cutting tooth (3) also includes a fourth working section (16) and a fifth working section (20). The fourth working section (16) is connected to the tool holder (1). The fifth working section (20) is located between the third working section (13) and the fourth working section (16). The fifth working section (20) is used to mill a rounded corner on the edge of the second end face (27) of the boss (25). The fourth working section (16) is used to mill a chamfer at the second corner between the boss (25) and the workpiece body (24).

6. The milling cutter according to claim 5, characterized in that, The top of the fourth working section (16) has a fifth cutting edge (18) and a sixth cutting edge (19). The fifth cutting edge (18) extends along the length direction of the handle (1), and the sixth cutting edge (19) is inclined. The top end of the sixth cutting edge (19) is closer to the handle (1) than the bottom end. The fifth cutting edge (18) is used to cut the workpiece body (24), and the sixth cutting edge (19) is used to cut the second end face (27) of the boss (25).

7. The milling cutter according to claim 6, characterized in that, The top of the fifth working section (20) has a seventh cutting edge (22), which is arc-shaped. The top end of the seventh cutting edge (22) is closer to the handle (1) than the bottom end. The top end of the seventh cutting edge (22) is connected to the bottom end of the sixth cutting edge (19), and the bottom end of the seventh cutting edge (22) is connected to the end of the fourth cutting edge (15) away from the first working section (6). The seventh cutting edge (22) is used to cut the edge of the second end face (27) of the boss (25).

8. The milling cutter according to any one of claims 1 to 7, characterized in that, The cutting teeth (3) are provided in multiple ways, and the multiple cutting teeth (3) are arranged at intervals on the cutting body (2). A chip removal groove (4) is provided between any two adjacent cutting teeth (3).

9. The milling cutter according to claim 8, characterized in that, The width between any two adjacent chip removal grooves (4) is the same.

10. The milling cutter according to claim 9, characterized in that, The outer periphery of the handle (1) is provided with a chip discharge groove (5), which extends along the length direction of the handle (1) and is connected to the chip removal groove (4).

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