Spiral milling cutter with high cutting precision

Abstract

The utility model discloses a spiral milling cutter with high cutting precision, which relates to the technical field of milling cutters and comprises a cutter holder and a threaded seat fixedly connected to the upper surface of the cutter holder, a fastening nut is in threaded connection with the outside of the threaded seat, and a fastening mechanism is arranged outside the threaded seat. And spiral milling cutter bodies are arranged in the cutter holder and on the upper surface of the cutter holder. Compared with an existing common spiral milling cutter, according to the spiral milling cutter with the high cutting precision, after the spiral milling cutter body is placed in the threaded base, the spiral milling cutter body penetrates through a corresponding hole of the fastening nut, the fastening nut is gradually tightened through the fastening threads, and in the gradual tightening process, the second chamfer will be tightly clamped under the action of the first chamfer; the fastening block is gradually abutted into the threaded seat and gradually gets close to the plane, so that the fastening effect of abutting tightly is achieved, and the fastening effect can reduce axial deviation generated by the spiral milling cutter body, reduce errors, improve cutting accuracy and achieve the purpose of quick disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a spiral milling cutter with high cutting accuracy. Background Art

[0002] A milling cutter is a common machining tool, mainly used for milling. It has one or more teeth. When working, each tooth cuts off the excess of the workpiece intermittently in turn. The milling cutter is mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines. Spiral milling cutter is a type of milling cutter.

[0003] For example, a spiral end mill with application number 202223270435.7 can be cooled by air by passing compressed air through the air blowing mechanism, which is suitable for processing workpieces that are not suitable for contact with water or coolant. In addition, the air blowing mechanism can also be used for air cooling when the milling cutter has a low speed and a low temperature, saving the use of water and coolant and reducing production costs. The flushing mechanism can be used to pass high-pressure water or coolant to cool the milling cutter, which is suitable for processing workpieces that can be water-cooled. However, during installation, it is difficult to achieve the purpose of rapid disassembly and assembly while improving cutting accuracy.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a spiral milling cutter with high cutting accuracy is proposed. Utility Model Content

[0005] The utility model aims to provide a spiral milling cutter with high cutting accuracy to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spiral milling cutter with high cutting accuracy, comprising a cutter seat and a threaded seat fixedly connected to the upper surface of the cutter seat, the external thread of the threaded seat is connected to a fastening nut, a fastening mechanism is arranged on the outside of the threaded seat, and the spiral milling cutter body is arranged inside and on the upper surface of the cutter seat.

[0007] Preferably, the fastening mechanism includes a slide groove opened on the outer circular surface of the threaded seat, a fastening block is slidably connected inside the slide groove, a first chamfer is opened on the outer surface of one side of the fastening block, a fastening thread is provided on the inner circular surface of the fastening nut, and a second chamfer is provided at the lower end of the inner circular surface of the fastening nut.

[0008] Preferably, a third chamfer is formed on the outer circumferential surface of the lower end of the spiral milling cutter body, and a fourth chamfer is formed on the outer surface of the other side of the fastening block.

[0009] Preferably, the outer cylindrical surface of the shank of the spiral milling cutter body is provided with four planes which are symmetrically distributed.

[0010] Preferably, an anti-slip block is fixedly connected to the upper surface of the fastening block, a limiting groove is provided on the inner surface of the threaded seat, and the anti-slip block is slidably connected to the inside of the limiting groove.

[0011] Preferably, a thread groove is formed on the upper surface of the tool holder, and a positioning screw is fixedly connected to the lower end of the spiral milling cutter body.

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

[0013] 1. The utility model provides a tool holder, a threaded seat, a fastening nut, a fastening mechanism, a sliding groove, a fastening block, a first chamfer, a fastening thread, a second chamfer, a spiral milling cutter body, a third chamfer, a fourth chamfer, an anti-slipping block, a limiting groove, and a plane. After the spiral milling cutter body is placed inside the threaded seat, the third chamfer will approach the fourth chamfer, so that the fastening block can slide out of the threaded seat. During the sliding process, the anti-slipping block can slide within the limiting position in the limiting groove to play an anti-slipping limiting role. Then the spiral milling cutter body is passed through the corresponding hole of the fastening nut, and the fastening nut is gradually tightened through the fastening thread. During the gradual tightening process, the second chamfer will gradually push the fastening block into the threaded seat and gradually approach the plane under the action of the first chamfer, so as to achieve a tight fastening effect. This fastening effect can reduce the axial deviation of the spiral milling cutter body, reduce errors, improve cutting accuracy, and achieve the purpose of quick disassembly and assembly.

[0014] 2. The utility model provides a cutter holder, a thread groove and a positioning screw. When the spiral milling cutter body is installed with the handle facing upward and the cutter head facing downward, the positioning screw can be slightly screwed into the thread groove, so that the spiral milling cutter body can be installed without using external force to hold it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the split three-dimensional structure;

[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of the knife holder 1 of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the fastening nut 3 of the utility model.

[0019] In the figure: 1. tool holder; 2. threaded seat; 3. fastening nut; 4. fastening mechanism; 41. slide groove; 42. fastening block; 43. first chamfer; 44. fastening thread; 45. second chamfer; 5. spiral milling cutter body; 6. third chamfer; 7. fourth chamfer; 8. anti-slip block; 9. limit groove; 10. thread groove; 11. plane; 12. positioning screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 4 As shown, a spiral milling cutter with high cutting accuracy comprises a cutter seat 1 and a threaded seat 2 fixedly connected to the upper surface of the cutter seat 1, the external thread of the threaded seat 2 is connected with a fastening nut 3, the external surface of the threaded seat 2 is provided with a fastening mechanism 4, the interior and upper surface of the cutter seat 1 are provided with a spiral milling cutter body 5, the fastening mechanism 4 comprises a slide groove 41 opened on the outer cylindrical surface of the threaded seat 2, the interior of the slide groove 41 is slidably connected with a fastening block 42, a first chamfer 43 is opened on the outer surface of one side of the fastening block 42, a fastening thread 44 is opened on the inner cylindrical surface of the fastening nut 3, a second chamfer 45 is opened at the lower end of the inner cylindrical surface of the fastening nut 3, a third chamfer 6 is opened on the outer cylindrical surface of the lower end of the spiral milling cutter body 5, a fourth chamfer 7 is opened on the outer surface of the other side of the fastening block 42, a plane 11 is opened on the outer cylindrical surface of the shank of the spiral milling cutter body 5, and the number of planes 11 There are four of them, which are symmetrically distributed. An anti-slip block 8 is fixedly connected to the upper surface of the fastening block 42. A limiting groove 9 is provided on the inner surface of the threaded seat 2, and the anti-slip block 8 is slidably connected to the inside of the limiting groove 9. After the spiral milling cutter body 5 is placed in the interior of the threaded seat 2, the third chamfer 6 will approach the fourth chamfer 7, so that the fastening block 42 slides out of the interior of the threaded seat 2. During the sliding process, the anti-slip block 8 can slide in the inner limit position of the limiting groove 9 to play an anti-slip limiting role. Then the spiral milling cutter body 5 is passed through the corresponding hole of the fastening nut 3, and the fastening nut 3 is gradually tightened through the fastening thread 44. During the gradual tightening process, the second chamfer 45 will, under the action of the first chamfer 43, gradually push the fastening block 42 into the interior of the threaded seat 2 and gradually approach the plane 11, thereby achieving a tight tightening effect. This tightening effect can reduce the axial deviation of the spiral milling cutter body 5.

[0022] Furthermore, the outside of the threaded seat 2 is provided with threads corresponding to the fastening threads 44 .

[0023] Furthermore, the number of the slide grooves 41 , the number of the fastening blocks 42 , and the number of the planes 11 are all four, and the design of the plane 11 corresponds to and is flush with the abutting surface of the fastening block 42 .

[0024] like Figure 2-Figure 3 As shown, a thread groove 10 is formed on the upper surface of the cutter seat 1, and a positioning screw 12 is fixedly connected to the lower end of the spiral milling cutter body 5.

[0025] Furthermore, the inner circumferential surface of the thread groove 10 is provided with threads corresponding to the threads on the outer circumferential surface of the positioning screw 12 .

[0026] Furthermore, when the positioning screw 12 is screwed in and tightened, it is necessary to ensure that the plane 11 is roughly flush with the abutment surface of the tightening block 42 .

[0027] Working principle: When using the spiral milling cutter with high cutting accuracy, first, after the spiral milling cutter body 5 is placed into the interior of the threaded seat 2, the third chamfer 6 will approach the fourth chamfer 7, so that the fastening block 42 slides out of the interior of the threaded seat 2. During the sliding process, the anti-slip block 8 can slide in the internal limit position of the limit groove 9 to play an anti-slip limit role. Then the spiral milling cutter body 5 is passed through the corresponding hole of the fastening nut 3, and the fastening nut 3 is gradually tightened through the fastening thread 44. During the gradual tightening process, the second chamfer 45 will gradually push the fastening block 42 into the interior of the threaded seat 2 and gradually approach the plane 11 under the action of the first chamfer 43, so as to achieve a tight fastening effect. When the spiral milling cutter body 5 is installed with the shank facing up and the cutter head facing down, the positioning screw 12 can be slightly screwed into the threaded groove 10, so as to achieve the effect of freeing hands for installation without using external force to drag the spiral milling cutter body 5. This is the working principle of the spiral milling cutter with high cutting accuracy.

Claims

1. A spiral milling cutter with high cutting accuracy, comprising a cutter seat (1) and a threaded seat (2) fixedly connected to the upper surface of the cutter seat (1), characterized in that: The external thread of the threaded seat (2) is connected to a fastening nut (3), the outside of the threaded seat (2) is provided with a fastening mechanism (4), and the inside and upper surface of the tool seat (1) are provided with a spiral milling cutter body (5).

2. A spiral milling cutter with high cutting accuracy according to claim 1, characterized in that: The fastening mechanism (4) comprises a slide groove (41) provided on the outer circumferential surface of the threaded seat (2); a fastening block (42) is slidably connected inside the slide groove (41); a first chamfer (43) is provided on one side of the outer surface of the fastening block (42); a fastening thread (44) is provided on the inner circumferential surface of the fastening nut (3); and a second chamfer (45) is provided at the lower end of the inner circumferential surface of the fastening nut (3).

3. A spiral milling cutter with high cutting accuracy according to claim 2, characterized in that: The outer circumferential surface at the lower end of the spiral milling cutter body (5) is provided with a third chamfer (6), and the outer surface on the other side of the fastening block (42) is provided with a fourth chamfer (7).

4. A spiral milling cutter with high cutting accuracy according to claim 1, characterized in that: The outer cylindrical surface of the handle of the spiral milling cutter body (5) is provided with a plane (11), and the number of the planes (11) is four and they are symmetrically distributed.

5. A spiral milling cutter with high cutting accuracy according to claim 2, characterized in that: An anti-slip block (8) is fixedly connected to the upper surface of the fastening block (42), a limiting groove (9) is provided on the inner surface of the threaded seat (2), and the anti-slip block (8) is slidably connected to the inside of the limiting groove (9).

6. A spiral milling cutter with high cutting accuracy according to claim 1, characterized in that: The upper surface of the cutter seat (1) is provided with a thread groove (10), and the lower end of the spiral milling cutter body (5) is fixedly connected with a positioning screw (12).

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