Milling cutter

Abstract

The utility model discloses a milling cutter which comprises a cutter head and milling cutter blades, and the cutter head is in a circular truncated cone shape; the number of the milling cutter blades is multiple, the multiple milling cutter blades are circumferentially distributed and arranged at the first end of the cutter head, the distances between the adjacent milling cutter blades are not equal, and the diameter of the first end of the cutter head is larger than that of the second end of the cutter head; the cutter head is provided with a counterweight groove on one side of the center of gravity of the milling cutter away from the center of the cutter head towards the second end. Based on the embodiment, the counterweight groove is formed in the side, far away from the center, of the gravity center of the cutter head, so that the weight of the cutter head on the side with the offset gravity center is lighter than that on the opposite side, the gravity center moves towards the center until the gravity center and the center coincide again, and the milling cutter can keep machining balance. And as the counterweight groove is started at the design stage of the milling cutter, acquired manual adjustment is not needed, and the machining precision and the machining stability of the non-equidistant milling cutter on the workpiece are further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of mechanical processing, and particularly relates to a milling cutter. BACKGROUND

[0002] Generally, in order to solve the resonance problem generated in the milling process, the interval angle of the milling cutter used in the mechanical processing industry is designed as an unequal division structure, so as to prevent resonance by disturbing the frequency of the cutting process. However, because of the unequal tooth structure, the problem of mass center eccentricity exists in the cutter, and the centrifugal force problem during high-speed rotation will also bring a certain amplitude of vibration problem. The vibration will affect the surface quality and precision of processing.

[0003] At present, in order to improve the processing precision, a mutual moving part can be added to the milling cutter, and the position of the moving part and the milling cutter on the milling cutter is adjusted to change the position of the center of gravity of the milling cutter, so that the milling cutter can maintain balance. The patent with publication number CN113477998A proposes an unequal tooth surface milling cutter for improving dynamic balance, which comprises a cutter body, a indexable insert, a fastening screw, a machine tool interface part, and a dynamic balance adjusting screw hole. The unequal tooth surface milling cutter has a large material removal amount and can improve the surface processing quality of the workpiece, but the unequal tooth pitch makes the cutter structure eccentric. The cutter rotates at high speed during cutting, which generates a large centrifugal force and causes strong dynamic imbalance. Therefore, the approximate orientation of the eccentricity is determined according to the mass center position of the cutter model, and a dynamic balance adjusting screw hole is added to the cutter body to improve the dynamic balance of the unequal tooth surface milling cutter.

[0004] The milling cutter mentioned in the above patent adjusts the dynamic balance through a screw hole and a bolt, so that the milling cutter can maintain balance during processing. However, this requires post-adjustment, and the amount of dynamic balance adjustment is determined by the adjuster. Different personnel and different milling cutters may have different adjustment effects. Therefore, the finally adjusted milling cutter may not completely achieve balance, and the balance effect is still not good. Practical new type content

[0005] The present application provides a milling cutter, which improves the balance of the milling cutter when processing a workpiece.

[0006] According to a first aspect of the present application, a milling cutter is provided, wherein:

[0007] The milling cutter comprises:

[0008] A cutter head, the cutter head being a circular truncated cone;

[0009] A plurality of milling inserts, the plurality of milling inserts being circumferentially distributed on a first end of the cutter head, the spacing between each adjacent milling insert being unequal, and the diameter of the first end of the cutter head being greater than the diameter of a second end of the cutter head.

[0010] The counterweight groove is formed on the side of the cutter head away from the center of the cutter head and towards the second end.

[0011] Optionally, the first end of the cutter head is circumferentially provided with a plurality of mounting grooves, distances between each adjacent mounting groove are not equal, and each mounting groove is mounted with a milling blade.

[0012] Optionally, a side wall of the mounting groove is provided with a fixing hole, the milling blade is provided with a connecting hole, and the fixing member is connected with the fixing hole and the connecting hole to mount the milling blade in the mounting groove.

[0013] Optionally, the side wall of the mounting groove is smoothly arranged.

[0014] Optionally, the second end of the cutter head is formed with a cylindrical connecting table, the connecting table and the cutter head are coaxially arranged, and a clamping hole is formed on the side of the connecting table away from the cutter head and towards the cutter head.

[0015] Optionally, the connecting table is provided with a connecting groove on the side away from the cutter head, and the connecting groove passes through the center of the connecting table.

[0016] Optionally, the milling cutter further comprises:

[0017] The counterweight block is clamped with the counterweight groove.

[0018] Optionally, a slot wall of the counterweight groove is provided with a clamping groove, and the counterweight block is clamped in the clamping groove.

[0019] Optionally, the number of the counterweight blocks is multiple, and the weights of each counterweight block are not equal.

[0020] Optionally, the milling cutter further comprises a cutter rod, and the cutter rod and the cutter head are detachably connected.

[0021] The technical scheme provided by the embodiment of the application at least brings the following beneficial effects:

[0022] The embodiment of the application provides a milling cutter, which comprises a cutter head and milling blades, the cutter head is a circular truncated cone; the number of the milling blades is multiple, the multiple milling blades are arranged in a circle at the first end of the cutter head, the spacing between each adjacent milling blade is unequal, the diameter of the first end of the cutter head is larger than the diameter of the second end of the cutter head; the cutter head is provided with a counterweight groove on the side far away from the center of the cutter head and toward the second end. Based on the above embodiment, since the cutter head of the milling cutter is a circular truncated cone, multiple unequal-spacing milling blades are arranged in a circle at the first end of the cutter head, so that the center of gravity and the center of the cutter head are offset, thereby when the milling cutter is designed, a counterweight groove can be arranged on the side far away from the center of the cutter head, so that the weight of the cutter head on the side where the center of gravity is offset is lighter than the opposite side, and then the center of gravity moves to the center direction until the center of gravity and the center are recombined, so that the milling cutter can keep machining balance under the condition that multiple unequal-spacing milling blades are arranged in a circle. Since the counterweight groove is arranged in the design stage of the milling cutter, manual adjustment is not needed, and the machining precision and machining stability of the unequal-spacing milling cutter on a workpiece are further improved.

[0023] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the application, and together with the specification, serve to explain the principles of the application, and do not constitute an improper limitation on the application.

[0025] Figure 1 is a structural schematic diagram of a milling cutter according to an exemplary embodiment;

[0026] Figure 2 is another structural schematic diagram of a milling cutter according to an exemplary embodiment.

[0027] LEGEND:

[0028]

[0029] DETAILED DESCRIPTION

[0030] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

[0033] In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments described in the specification are only part of the embodiments of the present disclosure, not all the embodiments.

[0034] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the schemes of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0035] Based on this, the application provides a milling cutter. First, the blade provided by the embodiment of the application is introduced below.

[0036] Figure 1 The structural schematic diagram of the milling cutter provided by one embodiment of the application is shown; Figure 2 is another structural schematic diagram of the milling cutter shown according to an exemplary embodiment. As shown in Figures 1-2 , the milling cutter can include the following structure:

[0037] Embodiment 1;

[0038] The milling cutter 10 includes:

[0039] The cutter head 11 is a circular truncated cone;

[0040] The milling blades 12 are multiple, and the multiple milling blades 12 are circumferentially arranged at the first end of the cutter head 11, the spacing between each adjacent milling blade 12 is unequal, and the diameter of the first end of the cutter head 11 is greater than the diameter of the second end of the cutter head 11;

[0041] The cutter head 11 is provided with a counterweight groove 13 on the side away from the center of the milling cutter 10, which is away from the center of the cutter head 11 and faces the second end.

[0042] Based on the above embodiment, since the cutter head 11 of the milling cutter 10 is a circular truncated cone, multiple unequal milling blades 12 are circumferentially arranged at the first end of the cutter head 11, so that the center of gravity and the center of the cutter head 11 will be offset, thereby when the milling cutter 10 is designed, a counterweight groove 13 can be opened on the side of the cutter head 11 away from the center, so that the weight of the cutter head 11 on the side where the center of gravity is offset will be lighter than the opposite side, thereby causing the center of gravity to move towards the center until the center of gravity and the center coincide, thereby enabling the milling cutter 10 to maintain machining balance even if multiple unequal milling blades 12 are circumferentially arranged. Since the counterweight groove 13 is started in the design stage of the milling cutter 10, it does not need to be adjusted artificially later, further improving the machining precision and machining stability of the unequal milling cutter 10 on the workpiece.

[0043] It can be understood that on the basis of the present embodiment, a counterweight protrusion can also be provided on the opposite side of the center of gravity away from the center and facing the second end, thereby enabling the center of gravity of the cutter head 11 to move towards the center until the center of gravity and the center coincide.

[0044] It can be understood that to determine the center of gravity and the center of the cutter head 11, simulation software can be used, and the size and position of the counterweight groove 13 or the counterweight protrusion can be simulated in the simulation, and finally the size and position are determined.

[0045] In an example, the first end of the cutter disc 11 is circumferentially provided with a plurality of mounting slots 111, the distance between each adjacent mounting slot 111 is not equal, and each mounting slot 111 is mounted with a milling blade 12.

[0046] By circumferentially providing a plurality of mounting slots 111 at the first end of the cutter disc 11, and mounting the milling blade 12 in the mounting slot 111, and enabling the blade part of the milling blade 12 to extend out of the mounting slot 111 to process the workpiece, the milling blade 12 can be protected without affecting the normal processing of the workpiece by the milling blade 12, thereby prolonging the service life of the milling blade 12.

[0047] Similarly, in order to adapt to the arrangement of the unequal-tooth milling cutter 10, the plurality of mounting slots 111 also need to be arranged at unequal distances at the first end of the cutter disc 11, so that the milling blade 12 mounted in the mounting slot 111 is also arranged at unequal distances, and the milling cutter 10 is an unequal-tooth milling cutter 10.

[0048] In an example, the side wall of the mounting slot 111 is provided with a fixing hole 112, the milling blade 12 is provided with a connecting hole 121, and the fixing member passes through the connecting hole 121 and is connected with the fixing hole 112, so that the milling blade 12 is mounted in the mounting slot 111.

[0049] In order to better fix the milling blade 12 in the mounting slot 111, the fixing hole 112 can be formed on the side wall of the mounting slot 111, the connecting hole 121 is formed on the side wall of the milling blade 12, and the fixing member passes through the connecting hole 121 once until the fixing hole 112, so that the milling blade 12 is fixed in the mounting slot 111, thereby improving the installation stability of the milling blade 12.

[0050] In an example, the side wall of the mounting slot 111 is smoothly arranged, and the side wall of the mounting slot 111 is smoothly arranged, which can avoid scratching the milling blade 12 or the workpiece when the side wall of the mounting slot 111 contacts the milling blade 12 or the workpiece, thereby improving the service life of the milling cutter and the processing quality of the workpiece.

[0051] In an example, the second end of the cutter disc 11 is formed with a cylindrical connecting table 113, the connecting table 113 and the cutter disc 11 are coaxially arranged, and the connecting table 113 is provided with a clamping hole 114 on the side away from the cutter disc 11 and close to the cutter disc 11, and the clamping hole 114 and the connecting table 113 are coaxially arranged.

[0052] By setting the cylindrical connecting table 113 at the second end of the cutter head 11, and setting the clamping hole 114 at the side of the connecting table 113 away from the cutter head 11, the cutter bar used for clamping the milling cutter 10 can be clamped through the connecting hole 121 and the connecting table 113; the connecting table 113 and the cutter head 11 are coaxially arranged, and the connecting hole 121 and the connecting table 113 are also coaxially arranged, so that the milling cutter 10 can run more stably during the process of machining the workpiece by the milling cutter 10 after the cutter bar is clamped through the connecting hole 121 and the connecting table 113.

[0053] In an example, the connecting table 113 is provided with a connecting groove 115 at the side away from the cutter head 11, and the connecting groove 115 passes through the center of the connecting table 113.

[0054] By setting the connecting groove 115, the connecting groove 115 passes through the center of the connecting table 113, thereby improving the clamping stability of the cutter bar and the connecting table 113.

[0055] Embodiment 2:

[0056] In an example, the milling cutter 10 further comprises:

[0057] The counterweight block is clamped with the counterweight groove 13.

[0058] Generally, after the counterweight groove 13 is set, the center of gravity of the milling cutter 10 coincides with the center, so that the milling cutter 10 is balanced, but as the milling cutter 10 processes the workpiece, the milling cutter 10 will be worn, so that the milling cutter 10 may again vibrate due to unbalance.

[0059] Therefore, by setting the counterweight block, the number of counterweight blocks can be increased or deleted when the milling cutter 10 is unbalanced, so as to adjust the weight of the side of the counterweight groove 13 of the milling cutter 10, so that the milling cutter 10 can be better balanced.

[0060] In an example, the groove wall of the counterweight groove 13 is provided with a clamping groove, and the counterweight block extends into the clamping groove and is clamped with the clamping groove.

[0061] By setting the clamping groove in the groove wall of the counterweight groove 13, the counterweight block can extend into the clamping groove to realize clamping with the clamping groove, thereby improving the clamping stability of the counterweight block and the clamping groove, and reducing the possibility of the counterweight block falling off during high-speed processing of the milling cutter 10.

[0062] In an example, the number of counterweight blocks is multiple, and the weight of each counterweight block is not equal.

[0063] Since the counterweights are of different weights, more counterweight groups of different total weights can be combined and placed in the counterweight groove 13, so that the weight of the side of the milling cutter 10 with the counterweight groove 13 can be more accurately and precisely adjusted to keep the center of gravity and the center of the milling cutter 10 overlapped and balanced.

[0064] It should be noted that the more types of counterweights of different weights, the more precisely the center of gravity of the milling cutter 10 can be adjusted.

[0065] In the above embodiment 2, the structures of the above embodiment 1 are included, and the processes in the above embodiment 1 can be implemented, and the same technical effects can be achieved. To avoid repetition, details are not repeated here.

[0066] Embodiment 3:

[0067] In an example, the milling cutter further comprises a cutter bar, the cutter bar and the cutter head 11 are detachably connected. By setting the cutter bar and the cutter head 11 to be detachably connected, the milling cutter piece 12 can be replaced by directly detaching the cutter head 11 and the cutter bar during machining. This is also conducive to allowing the mechanical arm or other operating device to control the milling cutter piece to machine the workpiece by controlling the cutter bar, thereby improving the convenience of the milling cutter 10 for machining the workpiece.

[0068] In the above embodiment 3, the structures of the above embodiment 1 and / or 2 are included, and the processes in the above embodiment 1 and / or 2 can be implemented, and the same technical effects can be achieved. To avoid repetition, details are not repeated here.

[0069] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A milling cutter, characterized in that The milling cutter comprises: a cutter head in the shape of a circular truncated cone; a plurality of milling blades arranged in a circle at a first end of the cutter head, the spacing between each adjacent milling blade being unequal, and the diameter of the first end of the cutter head being greater than the diameter of a second end of the cutter head; a counterweight groove is formed in the cutter head on the side away from the center of the cutter head and towards the second end.

2. The milling cutter of claim 1 wherein, a plurality of mounting grooves are arranged in a circle at the first end of the cutter head, the spacing between each adjacent mounting groove being unequal, and each mounting groove is provided with a milling blade.

3. The milling cutter of claim 2 wherein, A fixing hole is formed in the side wall of the mounting groove, and a connecting hole is formed in the milling blade, a fixing member is connected to the connecting hole and the fixing hole to enable the milling blade to be mounted in the mounting groove.

4. The milling cutter of claim 3 wherein, The side wall of the mounting groove is smoothly arranged.

5. The milling cutter of claim 1 wherein, A cylindrical connecting platform is formed at the second end of the cutter head, the connecting platform and the cutter head are coaxially arranged, a clamping hole is formed in the side of the connecting platform away from the cutter head and towards the cutter head, and the clamping hole and the connecting platform are coaxially arranged.

6. The milling cutter of claim 5 wherein, A connecting groove is formed in the side of the connecting platform away from the cutter head, and the connecting groove passes through the center of the connecting platform.

7. The milling cutter of claim 1 wherein, The milling cutter further comprises: a counterweight block which is clamped in the counterweight groove.

8. The milling cutter of claim 7 wherein, A clamping groove is formed in the groove wall of the counterweight groove, and the counterweight block is clamped in the clamping groove.

9. The milling cutter of claim 7 wherein, The number of counterweight blocks is not equal.

10. The milling cutter of any one of claims 1-9, wherein, The milling cutter further comprises: a cutter rod which is detachably connected to the cutter head.

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