Milling cutter convenient for chip removal

Abstract

The milling cutter comprises a cutter body, a spiral cutting edge is machined and formed on the cutter body, a plurality of chip breaker grooves are formed in the cutting edge and distributed in the length direction of the cutting edge at intervals, and the two ends of each chip breaker groove communicate with the two side faces of the cutting edge correspondingly. The chip removal device has the advantages that cutting chips temporarily stored in the chip removal groove can be cut off conveniently, the possibility that the cutting chips scratch the machining face of a workpiece is reduced, and the machining precision of the workpiece can be improved easily.

Description

Technical Field

[0001] The present application relates to the field of milling tools, and in particular to a milling cutter which facilitates chip removal. Background Art

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. Each tooth cuts off the excess of the workpiece intermittently in sequence during operation. Milling cutters are mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines.

[0003] Currently, when a milling cutter performs milling operations, continuous cutting chips generated from a workpiece are temporarily stored in a chip groove.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when continuous cutting chips are temporarily stored in the chip groove, as the milling cutter rotates at high speed, the continuous cutting chips themselves are not easy to break, resulting in the cutting chips scratching the machining surface of the workpiece as the milling cutter rotates, thereby reducing the machining accuracy of the workpiece. Summary of the invention

[0005] In order to facilitate cutting of continuous cutting chips, reduce the chances of cutting chips scratching the workpiece processing surface and improve the workpiece processing accuracy, the present application provides a milling cutter that facilitates chip removal.

[0006] The present application provides a milling cutter that facilitates chip removal using the following technical solution:

[0007] A milling cutter for easy chip removal comprises a cutter body, a spiral blade is formed on the cutter body, a plurality of chip breaker grooves are provided on the blade, the plurality of chip breaker grooves are arranged at intervals along the length direction of the blade, and the two ends of the chip breaker grooves are respectively connected to the two side surfaces of the blade.

[0008] By adopting the above technical scheme, the chips generated during the process of machining the workpiece by the milling cutter will temporarily rotate with the rotation of the milling cutter, and the chip breaker groove will contact the continuous chips and cut off the chips, so that the continuous chips will be cut and fragmented. The volume of the fragmented chips will be significantly reduced, so that as the milling cutter rotates at a high speed, it is more conducive to the discharge of the chips from the milling cutter, reducing the possibility of the surface of the workpiece being scratched by the chips as the milling cutter rotates, and ultimately achieving the purpose of improving the machining accuracy of the workpiece.

[0009] Optionally, the inner wall of the chip breaker groove is an arc surface.

[0010] By adopting the above technical solution, the inner wall of the arc surface is not conducive to the retention of crushed chips in the chip breaker groove, and it is more conducive to the discharge of chips as the milling cutter rotates.

[0011] Optionally, the chip breaker groove is inclined in the length direction, and the inclination direction is consistent with the rotation direction of the blade.

[0012] By adopting the above technical solution, the cutting direction of the chip breaker groove is opposite to the discharge direction of the cutting chips, thereby increasing the relative speed when the two are in contact, so that the chip breaker groove can cut off continuous cutting chips more effortlessly.

[0013] Optionally, the blade is processed with multiple chip breaker grooves, and the chip breaker grooves on two adjacent blades are staggered.

[0014] By adopting the above technical solution, the chip breaking grooves with staggered distribution can significantly increase the probability of the chip breaking grooves cutting off the chips, thereby facilitating further fragmentation of the continuous chips and facilitating the discharge of the chips.

[0015] Optionally, the milling cutter further comprises a handle connected to the cutter body, a plug-in column is fixedly connected to one end surface of the handle, and a connecting component is installed on the plug-in column;

[0016] The blade body is provided with a plug-in hole for the plug-in column to be plugged in and matched with, and the connecting end of the connecting component can be clamped on the inner wall of the plug-in hole.

[0017] By adopting the above technical solution, it is easy to disassemble and replace the cutter body, so that the cutter body can be replaced after long-term use, and the handle part that is not prone to wear and tear can be retained and reused, which can effectively reduce the use cost of the milling cutter.

[0018] Optionally, the connecting assembly includes a clamping block hinged on the plug-in column, a spring sheet with one end fixed to the plug-in column and the other end abutting against the clamping block, and a pull rope with one end fixed to the clamping block and the other end passing through the outside of the blade body; the clamping block can be clamped on the inner wall of the blade body.

[0019] By adopting the above technical solution, the connection component has a simple structure, which is convenient for stably connecting the blade body to the plug-in column, and also convenient for removing the blade body from the plug-in column, thereby facilitating the staff to replace the blade body.

[0020] Optionally, the connecting assembly further comprises a positioning block fixed on the plug-in column, and a positioning groove for the positioning block to be clamped is provided on the inner wall at the opening of the blade body, and when the positioning block is located in the positioning groove, the clamping block is clamped on the blade body.

[0021] By adopting the above technical solution, after the positioning block is inserted into the positioning groove, it is convenient for the clamping block to be clamped into the clamping groove.

[0022] Optionally, a pull ring is fixedly connected to one end of the pull rope passing through the knife body.

[0023] By adopting the above technical solution, the pull ring is convenient for pulling the pull rope to release the connection between the clamping block and the clamping groove, and is also conducive to limiting the pull rope to prevent the pull rope from falling into the hole of the knife body and being inconvenient to be taken out.

[0024] Optionally, a threading hole for the pull rope to pass through is opened on the knife handle along its length direction, and the end of the threading hole away from the clamping block is processed with a flared opening, and the pull ring can enter the flared opening.

[0025] By adopting the above technical solution, the threading hole will neither hinder the rotation of the milling cutter nor be damaged during the rotation of the milling cutter. After the pull ring is located inside the flared mouth, it is easy to hide the pull ring, thereby reducing the possibility of damage to the pull ring.

[0026] Optionally, a receiving groove is provided on the plug-in column, and the clamping block, the spring sheet and the pull rope are all arranged in the receiving groove, and the spring sheet supports the clamping block to extend out of the receiving groove.

[0027] By adopting the above technical solution, after the connection assembly is accommodated, it is convenient for the blade body to be sleeved on the plug-in column.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. By setting the cutter body, blade and chip breaker, the continuous cutting chips are cut and fragmented. The volume of the fragmented cutting chips is significantly reduced, which is more conducive to the discharge of the cutting chips from the milling cutter, thereby reducing the possibility of the cutting chips scratching the workpiece surface as the milling cutter rotates and improving the workpiece processing accuracy;

[0030] 2. By setting the inner wall of the chip breaker groove to a circular arc surface, it is not conducive to the retention of crushed chips in the chip breaker groove. As the milling cutter rotates, it is more conducive to the discharge of chips;

[0031] 3. By setting the chip breaker groove at an angle, the relative speed of the two when in contact is increased, so that the chip breaker groove can cut off continuous cutting chips more effortlessly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the milling cutter in the first embodiment.

[0033] Figure 2 It is a part of the milling cutter in the second embodiment; a schematic diagram of the cross-sectional structure.

[0034] Figure 3 It is a structural diagram of the connected components.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the knife body.

[0036] Explanation of the reference numerals: 1. tool body; 11. chip removal groove; 12. blade; 13. snap-in groove; 14. positioning groove; 2. tool handle; 21. threading hole; 3. chip breaker groove; 4. plug-in column; 41. receiving groove; 5. connecting component; 51. snap-in block; 52. spring piece; 53. pull rope; 54. pull ring; 55. positioning block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-4 , further details of this application are given.

[0038] Embodiment 1

[0039] The present application embodiment discloses a milling cutter that facilitates chip removal, referring to Figure 1 The milling cutter comprises a cutter body 1 and a cutter handle 2 integrally formed of titanium alloy material, the cutter body 1 and the cutter handle 2 have the same outer diameter and their axes coincide. A spiral chip groove 11 is formed on the cutter body 1 around the axis of the cutter body 1, a blade ridge is formed between two adjacent chip grooves 11, a blade 12 is formed on the blade ridge, and a plurality of chip breaker grooves 3 are formed on the blade 12 at equal intervals along the rotation direction of the blade 12, and the notches at both ends of the chip breaker groove 3 and the opening edge of the chip breaker groove 3 in the length direction are polished to form chip breaker edges, so that the cutting chips can be cut off.

[0040] Reference Figure 1 In this embodiment, four blades 12 are provided, and the chip breaker grooves 3 on two adjacent blades 12 are staggered, so as to increase the probability of multiple chip breaker grooves 3 cutting off continuous chips, reduce the volume of chips as much as possible, facilitate the chips to separate from the chip groove 11, and reduce the possibility of large chips scratching the workpiece processing surface with the high-speed rotation of the milling cutter, thereby achieving the purpose of improving the workpiece processing accuracy. In addition, it is also beneficial to dissipate heat from the cutter body 1 and the workpiece, thereby extending the service life of the milling cutter.

[0041] In this embodiment, the inner wall of the chip breaker groove 3 is an arc surface, and the two ends of the chip breaker groove 3 are respectively connected to two adjacent chip grooves 11, so that the cut and fragmented cutting chips are not conducive to being temporarily stored in the chip groove 11, but are easily discharged from the chip groove 11.

[0042] The length direction of the chip breaker groove 3 is the same as the rotation direction of the blade 12. As the milling cutter rotates, the chips will be discharged in the chip groove 11 in the opposite direction of the feed direction of the milling cutter. In the process of chip discharge, the relative speed when the chips and the inclined chip breaker groove 3 come into contact is significantly increased, which facilitates the chip breaker groove 3 to smoothly cut off the continuous chips.

[0043] Embodiment 2

[0044] The difference between this embodiment and the first embodiment is that:

[0045] Combination Figure 2 and Figure 4The blade body 1 and the blade handle 2 are detachably connected. The blade body 1 is processed into a cylindrical structure with a circular opening at one end, the center of the opening coincides with the axis of the blade body 1, and the other end of the blade body 1 is a closed end, on which an end blade is processed. A clamping groove 13 is provided on the inner wall of the blade body 1 and a section close to the opening of the blade body 1, and a positioning groove 14 is provided on the end surface of the blade body 1 where the opening is provided.

[0046] Combination Figure 2 and Figure 3 The milling cutter also includes a plug-in column 4 which is integrally formed on one end of the tool handle 2 and has a diameter smaller than that of the tool handle 2, and a connecting component 5 arranged on the plug-in column 4. The axis of the plug-in column 4 coincides with the axis of the tool handle 2. The tool body 1 can be sleeved on the plug-in column 4 and the two are adapted to each other. When the tool body 1 is sleeved on the plug-in column 4, the connecting end of the connecting component 5 is inserted into the clamping groove 13 to stably connect the tool body 1 to the plug-in column 4.

[0047] Combination Figure 2 and Figure 3 A receiving groove 41 for installing the connecting component 5 is opened on the circumferential surface of the plug-in column 4, and the connecting component 5 includes a clamping block 51, one end of which is rotatably installed in the receiving groove 41 through a fixed axis, a Z-shaped spring piece 52 with one end fixed to the bottom of the receiving groove 41, a pull rope 53 with one end fixed to the clamping block 51 and the other end passing through the blade body 1, a pull ring 54 fixedly connected to one end of the pull rope 53 passing through the blade body 1, and a positioning block 55 which is integrally formed and arranged on the circumferential surface of the plug-in column 4 and can be clamped into the positioning groove 14.

[0048] Reference Figure 3 , one end face of the clamping block 51 is semicircular, and the semicircular end is rotatably arranged at the end of the receiving slot 41 away from the knife handle 2, the spring piece 52 is fixedly connected to the end of the receiving slot 41 close to the knife handle 2, and the other end of the spring piece 52 abuts on the surface of the clamping block 51 close to the bottom of the receiving slot 41, and the spring piece 52 abuts on the midpoint of the length of the clamping block 51, and the pull rope 53 is also connected to the midpoint of the length of the clamping block 51, so that the spring piece 52 and the pull rope 53 can support the clamping block 51 and pull the clamping block 51 more effortlessly. The other end of the clamping block 51 is wedge-shaped and matches the shape of the clamping slot 13. After the knife body 1 is sleeved on the plug-in column 4, the positioning block 55 is aligned with the positioning slot 14 and inserted, and at this time, the plug-in column 4 and the plug-in slot are also arranged correspondingly.

[0049] A threading hole 21 is provided on the handle 2 along its axial direction, and the two ends of the threading hole 21 are respectively connected to the end of the handle 2 away from the plug-in column 4 and the end of the receiving groove 41 close to the spring 52, and the pull rope 53 passes through the handle 2 through the threading hole 21. The threading hole 21 is processed at one end of the end surface of the handle 2 to form a flared opening, and the pull ring 54 can be placed in the flared opening, which can not only hide the pull ring 54 but also prevent the pull ring 54 from interfering with the work of the milling cutter.

[0050] In actual use, after the blade body 1 is sleeved on the plug-in column 4, the inner wall of the blade body 1 presses the clamping block 51 into the receiving groove 41. When the clamping block 51 corresponds to the clamping groove 13, the clamping block 51 is pushed into the clamping groove 13 under the elastic force of the spring 52, so that the blade body 1 is stably and quickly connected to the handle 2. When the blade body 1 needs to be replaced after a long period of use, the pull rope 53 is pulled to put the clamping block 51 into the receiving groove 41, and the connection between the clamping block 51 and the blade body 1 can be released, so that the blade body 1 can be replaced easily, and the handle 2 part with less wear can be reused to achieve the purpose of reducing the cost of use. The embodiments of this specific implementation method are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. The same parts are represented by the same figure marks. Therefore: all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A milling cutter for easy chip removal, characterized in that: The invention comprises a tool body (1), wherein a spiral blade (12) is machined on the tool body (1), a plurality of chip breaker grooves (3) are provided on the blade (12), the plurality of chip breaker grooves (3) are arranged at intervals along the length direction of the blade (12), and the two ends of the chip breaker grooves (3) are respectively connected to the two side surfaces of the blade (12).

2. A milling cutter for easy chip removal according to claim 1, characterized in that: The inner wall of the chip breaker groove (3) is an arc surface.

3. A milling cutter for easy chip removal according to claim 1 or 2, characterized in that: The chip breaker groove (3) is arranged to be inclined in the length direction, and the inclination direction is consistent with the rotation direction of the blade (12).

4. A milling cutter for easy chip removal according to claim 1, characterized in that: The blade (12) is processed with a plurality of chip breaker grooves (3), and the chip breaker grooves (3) on two adjacent blades (12) are staggered.

5. A milling cutter for easy chip removal according to claim 1, characterized in that: The milling cutter also includes a tool handle (2) connected to the tool body (1), a plug-in column (4) is fixedly connected to one end surface of the tool handle (2), and a connecting component (5) is installed on the plug-in column (4); The blade body (1) is provided with a plug-in hole for the plug-in column (4) to be plugged in and matched with, and the connecting end of the connecting component (5) can be clamped on the inner wall of the plug-in hole.

6. A milling cutter for easy chip removal according to claim 5, characterized in that: The connecting assembly (5) comprises a clamping block (51) hinged on the plug-in column (4), a spring sheet (52) having one end fixedly connected to the plug-in column (4) and the other end abutting against the clamping block (51), and a pull rope (53) having one end fixedly connected to the clamping block (51) and the other end passing through the outside of the knife body (1); the clamping block (51) can be clamped on the inner wall of the knife body (1).

7. A milling cutter for easy chip removal according to claim 6, characterized in that: The connecting assembly (5) further comprises a positioning block (55) fixed on the plug-in column (4); a positioning groove (14) for the positioning block (55) to be clamped is provided on the inner wall at the opening of the blade body (1); when the positioning block (55) is located in the positioning groove (14), the clamping block (51) is clamped on the blade body (1).

8. A milling cutter for easy chip removal according to claim 7, characterized in that: A pull ring (54) is fixedly connected to one end of the pull rope (53) passing through the knife body (1).

9. A milling cutter for easy chip removal according to claim 8, characterized in that: A threading hole (21) for the pull rope (53) to pass through is provided on the knife handle (2) along its length direction, and an end of the threading hole (21) away from the clamping block (51) is processed with a flared opening, and the pull ring (54) can enter the flared opening.

10. A milling cutter for easy chip removal according to claim 6 or 9, characterized in that: The plug-in column (4) is provided with a receiving groove (41), the clamping block (51), the spring sheet (52) and the pull rope (53) are all arranged in the receiving groove (41), and the spring sheet (52) supports the clamping block (51) to extend out of the receiving groove (41).

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