Machining apparatus and milling cutter thereof
By designing chip removal grooves and drainage grooves on the milling cutter, combined with the setting of long and short cutting edges, the problem of overheating caused by chip blockage in high-speed drilling is solved, realizing convenient chip removal and tool cooling, reducing wear and chipping.
Patent Information
- Application Number
- PCT/CN2024/135062
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-08-14
- Filing Date
- 2024-11-27
- Publication Date
- 2026-02-19
AI Technical Summary
During high-speed drilling, the chips from the milling cutter can easily clog the cutting tool, leading to overheating and subsequently causing wear and chipping.
A milling cutter is designed, including a cutter body, a long cutting edge and a short cutting edge. The long cutting edge forms a chip removal groove, and the short cutting edge is located in the chip removal groove. Combined with a clearance part and a drainage groove, the waste chips are discharged and the temperature is reduced by using cooling water.
It effectively removes waste chips, reduces tool wear and chipping, and increases tool life.
Smart Images
Figure CN2024135062_19022026_PF_FP_ABST
Abstract
Description
A machining device and a milling cutter thereof TECHNICAL FIELD
[0001] The present application relates to the technical field of cutters, and particularly relates to a machining device and a milling cutter thereof. BACKGROUND
[0002] When high-speed drilling is performed, the milling cutter is prone to being blocked by the waste generated in the machining process, and the waste is difficult to be discharged in time, which leads to overheating of the milling cutter and causes the problems of wear and breakage of the cutter. SUMMARY
[0003] The present application provides a machining device and a milling cutter thereof, which can easily discharge the waste and reduce the problems of wear and breakage of the cutter.
[0004] In order to achieve the above-mentioned purpose, the present application provides a milling cutter, which comprises:
[0005] A cutter body has an end face, a peripheral surface and a transition surface, the end face and the peripheral surface are connected through the transition surface, the transition surface is an arc surface recessed to the inside of the cutter body, the end face is provided with a clearance recessed to the inside of the cutter body, and the transition surface is provided with a drainage groove in communication with the clearance;
[0006] A long blade is arranged on the transition surface, one end of the long blade extends to the peripheral surface, the other end of the long blade extends to the end face, the long blade is arranged in multiple and is uniformly spaced from each other, and a chip removal groove is formed between two adjacent long blades;
[0007] A short blade is arranged on the transition surface, one end of the short blade extends to the peripheral surface, the other end of the short blade extends towards the end face, the short blade is arranged in multiple and is located in the chip removal groove, and the short blade is alternately arranged with the long blade.
[0008] In some embodiments of the present application: the other end of the long blade extends to the end face, and the end face of the other end of the long blade is flush with or protrudes from the end face of the cutter body.
[0009] In some embodiments of the present application: the end face is provided with a notch portion, and the clearance and the drainage groove are in communication through the notch portion.
[0010] In some embodiments of the present application: the notch portion is in the form of a groove, and the groove bottom of the notch portion and the groove bottom of the drainage groove are smoothly transitioned.
[0011] In some embodiments of the present application: the number of the drainage grooves is 2-4, the plurality of drainage grooves are uniformly spaced on the transition surface, and the groove depth of the drainage groove is 0.8-1.5mm;
[0012] The spacing between adjacent short blades and long blades is uniform, the distance between adjacent two long blades is recorded as a first distance, the distance between adjacent long blades and short blades is recorded as a second distance, the groove width of the drainage groove is the sum of the first distance and the second distance, and the measurement endpoints of the groove width, the first distance and the second distance are located on the circumference of the same circle, and the center of the circle is on the axis of the cutter body.
[0013] In some embodiments of the present application: the groove width of the drainage groove gradually increases from the end close to the avoidance part to the end away from the avoidance part.
[0014] In some embodiments of the present application: the long blades and the short blades are both arc-shaped, and the shapes of the long blades and the short blades match each other, and the groove wall of the drainage groove is an arc surface matching the shape of the long blade.
[0015] In some embodiments of the present application: the length of the short blade is 1 / 2-2 / 3 of the length of the long blade.
[0016] In some embodiments of the present application: the cutter body, the long blades and the short blades are integrally formed.
[0017] In some embodiments of the present application, the milling cutter further comprises:
[0018] A shank connected to the cutter body.
[0019] The present application also provides a processing equipment comprising:
[0020] A power device;
[0021] A clamping device;
[0022] The milling cutter as described in any one of the above embodiments, the clamping device clamps the milling cutter, and the power device drives the milling cutter to rotate.
[0023] The present application provides a milling cutter, which has the beneficial effects compared with the prior art in that:
[0024] The milling cutter of the application comprises a cutter body, long blades and short blades, the long blades form chip grooves between them, the short blades are located in the chip grooves, the long blades and the short blades are used for machining workpieces, the arrangement of the short blades can prevent the blades from being too dense and facilitate the discharge of chips, the cutter body is provided with a clearance and a drainage groove, the arrangement of the clearance and the drainage groove can guide the cooling water, part of the cooling water flows away from the drainage groove, and part of the cooling water flushes the chip grooves, helping to discharge the chips, and such a structure can also facilitate the cooling of the milling cutter by the cooling water, reducing the wear and tear and the problem of blade collapse of the cutter.
[0025] The machining equipment of the application comprises the above-mentioned milling cutter, can easily discharge waste chips, and reduce the wear and tear and the problem of blade collapse of the cutter. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 is a structural schematic view of an embodiment of the application.
[0027] In the figure, 1 is a cutter body, 2 is a long blade, 3 is a short blade, 4 is a chip groove, 11 is an end face, 12 is a peripheral surface, 13 is a transition surface, 14 is a clearance, 15 is a drainage groove, 16 is a notch, L is a first distance, and D is a second distance. DETAILED DESCRIPTION
[0028] The specific embodiments of the application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the application, but are not used to limit the scope of the application.
[0029] In the description of the application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance.
[0030] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0031] Furthermore, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0032] The above terms can be understood in the specific meaning in the present application according to the specific circumstances for those skilled in the art.
[0033] Please refer to FIG. 1, a milling cutter of an embodiment of the present application, comprising: a cutter body 1, a long blade 2 and a short blade 3.
[0034] The cutter body 1 has an end face 11, a peripheral surface 12 and a transition surface 13, the end face 11 and the peripheral surface 12 are connected by the transition surface 13, the transition surface 13 is a concave arc surface to the inside of the cutter body 1, the end face 11 is provided with a clearance 14 concave to the inside of the cutter body 1, and the transition surface 13 is provided with a drainage groove 15, which communicates with the clearance 14.
[0035] The long blade 2 is arranged on the transition surface 13, one end of the long blade 2 extends to the peripheral surface 12, and the other end of the long blade 2 extends to the end face 11, the long blade 2 is arranged in multiple and uniformly spaced from each other, and the adjacent two long blades 2 form a chip flute 4. In some embodiments, the other end of the long blade 2 can be flush with the end face 11, or can protrude from the end face 11, that is, the end face of the other end of the long blade 2 protrudes from the end face 11 of the cutter body 1 or is flush with the end face 11 of the cutter body 1.
[0036] The short blade 3 is arranged on the transition surface 13, one end of the short blade 3 extends to the peripheral surface 12, and the other end of the short blade 3 extends towards the end face 11, the short blade 3 is arranged in multiple and located in the chip flute 4, and the short blade 3 is arranged alternately with the long blade 2.
[0037] The long blade 2 and the short blade 3 are both used for machining workpieces, the arrangement of the short blade 3 can make the part of the transition surface 13 close to the end face 11 have only the long blade 2, and the part of the transition surface 13 close to the peripheral surface 12 have both the long blade 2 and the short blade 3, through such structure, it can prevent the part of the transition surface 13 close to the end face 11 from being too dense, and the chips are easy to be discharged from the chip flute 4, and it can also prevent the knife marks from being generated on the workpiece.
[0038] When the milling cutter machines the workpiece, cooling water will be used to help cooling, the cutter body 1 is provided with the clearance 14 and the drainage groove 15, the clearance 14 and the drainage groove 15 can guide the cooling water reflected from the workpiece to the cutter body 1, part of the cooling water flows away from the drainage groove 15, and part of the cooling water flushes the chip flute 4, and the clearance 14 can guide the cooling water into the drainage groove 15. Thus, it helps to discharge the chips generated during machining, and such structure can also facilitate the cooling water to cool down the milling cutter, reduce the wear and tear of the cutter and the problem of blade collapse.
[0039] In some embodiments, the end face 11 is provided with a notch portion 16, and the clearance portion 14 and the drainage groove 15 are connected through the notch portion 16. The notch portion 16 is also provided as a position recessed to the inside of the cutter body 1, and at least a part of the notch portion 16 is located at the edge of the end face 11, so as to form a position facilitating the cooling water in the clearance portion 14 to enter the drainage groove 15 through the notch portion 16.
[0040] In some embodiments, the notch portion 16 is in the form of a groove, and the groove bottom of the notch portion 16 is smoothly transitioned to the groove bottom of the drainage groove 15. Through such a structure, the resistance of the cooling water passing through the notch portion 16 can be reduced, and the cooling water can be better guided to enter the drainage groove 15. In some embodiments, the groove bottom of the notch portion 16 can be provided as an arc surface, so as to facilitate the smooth transition of the notch portion 16 to the groove bottom of the drainage groove 15.
[0041] In some embodiments, the number of the drainage grooves 15 is 2-4, and the plurality of drainage grooves 15 are uniformly spaced on the transition surface 13. The groove depth of the drainage groove 15 is 0.8-1.5 mm. The plurality of drainage grooves 15 can facilitate the discharge of cooling water, and can also make the cooling of the milling cutter more balanced. When the groove depth of the drainage groove 15 is set within this range, the drainage groove 15 can not only play a role in discharging cooling water, but also meet the cooling requirements of the milling cutter, and at the same time meet the requirements of milling and cutter strength.
[0042] In some embodiments, the distance between the adjacent short blades 3 and long blades 2 is consistent, the distance between the adjacent two long blades 2 is recorded as a first distance L, the distance between the adjacent long blade 2 and short blade 3 is recorded as a second distance D, and the groove width of the drainage groove 15 is the sum of the first distance L and the second distance D.
[0043] It should be pointed out here that since the drainage groove 15 also exists in the form of a groove width that is not uniform, the sum of the first distance L and the second distance D corresponding to the groove width of the drainage groove 15, and the groove width position of the drainage groove 15 is the same as the position of the first distance L and the second distance D, that is, the measurement endpoints of the groove width, the first distance L and the second distance D are located on the circumference of the same circle, and the center is on the axis of the cutter body.
[0044] For example, the groove width of the drainage groove 15 at the opening on the peripheral surface 12 is the sum of the first distance L and the second distance D of the long blade 2 and the short blade 3 extending to the position of the peripheral surface 12, and the groove width of the drainage groove 15 near the end face is the first distance L, and the corresponding position only has the long blade 2 without the short blade 3, and the second distance D is continued to the end face 11 along the existing shape of the short blade 3, until it extends to the position corresponding to the groove width of the aforementioned drainage groove 15, so as to determine the second distance D by the extension line.
[0045] In some embodiments, the width of the groove of the drainage groove 15 gradually increases from the end of the drainage groove 15 close to the clearance 14 to the end of the drainage groove 15 away from the clearance 14.
[0046] With such a structure, when the cooling water is drained from the drainage groove 15, the width of the drainage groove 15 gradually increases, which facilitates the flow of the cooling water in the drainage groove 15 and improves the drainage speed.
[0047] In some embodiments, the long blade 2 and the short blade 3 are both arc-shaped, and the shapes of the long blade 2 and the short blade 3 match each other, and the groove wall of the drainage groove 15 is an arc surface matching the shape of the long blade 2. Shape matching means that the shape features are similar, as in the form of FIG. 1. Of course, the long blade 2 and the short blade 3 can also be set to have different arc angles, or the long blade 2 and the short blade 3 can be cross-shaped (for example, the long blade 2 and the short blade 3 intersect, that is, the long blade 2 and the short blade 3 have an intersection point).
[0048] In other embodiments, the long blade 2 and the short blade 3 can also be radial straight lines, or wave-shaped.
[0049] It can be understood that shape matching means that the shape features are similar. In some embodiments, the long blade 2 and the short blade 3 are both arc-shaped. In some embodiments, the long blade 2 and the short blade 3 have the same curvature. In some embodiments, when the short blade is shorter, the long blade 2 and the short blade 3 have the same length and the same arc shape and curvature. In other embodiments, the long blade 2 and the short blade 3 can both be radial straight lines. In other embodiments, the long blade 2 and the short blade 3 can both be wave-shaped. In other embodiments, the long blade 2 and the short blade 3 have similar bending degrees of the waves in the wave shape.
[0050] In some embodiments, the length of the short blade 3 is 1 / 2-2 / 3 of the length of the long blade 2. Within this range, the part of the transition surface 13 close to the end surface 11 has only the long blade 2, and the part of the transition surface 13 close to the peripheral surface 12 has both the long blade 2 and the short blade 3. The long blade 2 and the short blade 3 have a milling effect, and the short blade 3 close to the end surface 11 is reduced, so that the total number of blade edges close to the end surface 11 is reduced, avoiding too dense blade edges, making it difficult for chips to be discharged, and avoiding too many blades producing tool marks on the workpiece.
[0051] In some embodiments, the tool body 1, the long blade 2, and the short blade 3 are integrally formed. The tool body 1, the long blade 2, and the short blade 3 are one structure, and the long blade 2 and the short blade 3 can be machined on the tool body 1.
[0052] In some embodiments, the milling tool further includes a tool shank connected to the tool body 1. The tool shank is used to connect the tool body 1, and the tool shank can also provide a connection position with other structures or other devices.
[0053] The embodiment also provides a machining device, which comprises a power device, a clamping device and the milling cutter.
[0054] The clamping device can clamp the milling cutter by clamping the shank, and the power device drives the milling cutter to rotate, so as to machine the workpiece by the milling cutter.
[0055] The above merely describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.
Claims
1. A milling cutter characterized by, The milling cutter comprises a cutter body, a long blade and a short blade.
2. The milling cutter according to claim 1, wherein the other end of the long blade extends to the end face of the cutter body, and the end face of the other end of the long blade is flush with or protrudes from the end face of the cutter body.
3. The milling cutter according to claim 1, wherein a notch is arranged on the end face, and the clearance is communicated with the drainage groove through the notch.
4. The milling cutter according to claim 3, wherein the notch is in the form of a groove, and the groove bottom of the notch and the groove bottom of the drainage groove are smoothly connected.
5. The milling cutter according to claim 1, wherein the number of the drainage grooves is 2-4, and the plurality of drainage grooves are uniformly arranged on the transition face, the groove depth of the drainage groove is 0.8-1.5 mm, the distance between the adjacent long blades is defined as a first distance, the distance between the adjacent long blade and the short blade is defined as a second distance, the groove width of the drainage groove is the sum of the first distance and the second distance, the measuring endpoints of the groove width, the first distance and the second distance are located on the circumference of the same circle, and the center of the circle is on the axis of the cutter body.
6. The milling cutter according to claim 1, wherein the groove width of the drainage groove gradually increases from the end close to the clearance to the end away from the clearance.
7. The milling cutter according to claim 1, wherein the long blade and the short blade are in the form of an arc, a straight line or a wave, and the shapes of the long blade and the short blade match each other; preferably, the long blade and the short blade are in the form of an arc, and the shapes of the long blade and the short blade match each other, and the groove wall of the drainage groove is an arc surface matching the shape of the long blade.
8. The milling cutter according to claim 1, wherein the length of the short blade is 1 / 2-2 / 3 of the length of the long blade.
9. The milling cutter according to claim 1, wherein the cutter body, the long blade and the short blade are integrally formed. The milling cutter further comprises a shank connected to the cutter body. The milling cutter comprises a power device, a clamping device and a cutter body. 10. The milling cutter according to claim 1, characterized in that 11. A processing apparatus characterized by comprising: The milling cutter according to any one of claims 1-10, wherein the clamping device clamps the milling cutter, and the power device drives the milling cutter to rotate.
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