Cutter and machining equipment

Abstract

The utility model relates to a cutter and machining equipment, and relates to the technical field of milling machining. The tool comprises a connecting piece and a tool bit piece, the tool bit piece is connected with one end of the connecting piece, and the tool bit piece comprises at least one cutting edge arranged on the peripheral side of the tool bit piece; the cutting edge comprises a side tool face, an end face, a first groove face, a first curved face and a second groove face, a fillet is formed at the joint of the side tool face and the end face, the first groove face, the first curved face and the second groove face are all located on the inner side of the cutting edge, the first curved face is in smooth connection with the first groove face and the second groove face, and the second curved face is in smooth connection with the second groove face. And one side line of the first curved surface coincides with the fillet arc line. The problem of chipping of the fillet at the end of the blade can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of milling machining, and particularly to a cutting tool and a machining device. Background Art

[0002] In the field of machining, it is often necessary to machine various complex curved surfaces or contours, and corner milling cutters are widely used in curved surface machining. However, in the related art, during the milling process of a corner milling cutter, there is a risk of corner chipping, resulting in poor durability of the milling cutter. Summary of the Utility Model

[0003] Based on this, in view of the problem of corner chipping during the milling process of a milling cutter, it is necessary to provide a cutting tool and a machining device.

[0004] To achieve the above object, the technical solution adopted in the present application is as follows:

[0005] In a first aspect, an embodiment of the present application provides a cutting tool, including:

[0006] A connecting member;

[0007] A cutter head member, the cutter head member is connected to one end of the connecting member, and the cutter head member includes at least one cutting edge provided on the circumferential side of the cutter head member;

[0008] Wherein, the cutting edge includes a side cutting surface, an end surface, a first groove surface, a first curved surface and a second groove surface, a fillet is formed at the connection between the side cutting surface and the end surface, the first groove surface, the first curved surface and the second groove surface are all located inside the cutting edge, the first curved surface is smoothly connected to the first groove surface and the second groove surface respectively, and one side edge of the first curved surface coincides with the fillet arc.

[0009] In one of the embodiments of the first aspect, a second curved surface is provided on one side of the second groove surface connected to the first curved surface, and under the restriction of the first curved surface, the second curved surface forms a corresponding preset rake angle with the radial direction of the cutting tool.

[0010] In one of the embodiments of the first aspect, the first curved surface includes a plurality of transition regions, and the second curved surface forms a plurality of arc surface regions corresponding to the transition regions, and each of the arc surface regions forms a corresponding preset rake angle with the radial direction of the cutting tool.

[0011] In one of the embodiments of the first aspect, the first curved surface is provided with a first transition region and a second transition region;

[0012] Under the limitation of the first transition region and the second transition region, the second curved surface is correspondingly provided with a first arc surface region, a second arc surface region, and a third arc surface region. The first arc surface region forms a first preset rake angle with the radial direction of the tool, the second arc surface region forms a second preset rake angle with the radial direction of the tool, and the third arc surface region forms a third preset rake angle with the radial direction of the tool.

[0013] In one embodiment of the first aspect, the range value of the first preset rake angle is: -10° to 0°.

[0014] In one embodiment of the first aspect, the range value of the second preset rake angle is: -15° to 15°.

[0015] In one embodiment of the first aspect, the range value of the third preset rake angle is: -15° to 15°.

[0016] In one embodiment of the first aspect, the regional boundaries of the first transition region and the second transition region are successively a first marking line, a second marking line, and a third marking line. The first marking line is parallel to the axial direction of the tool, the third marking line is parallel to the radial direction of the tool, and the third marking line is perpendicular to the first marking line.

[0017] In one embodiment of the first aspect, the included angle between the second marking line and the first marking line is 45°.

[0018] In a second aspect, an embodiment of the present application further provides a processing device, including the tool in any of the above embodiments.

[0019] Compared with the related art, the beneficial effects of the present application are as follows: The tool and the processing device provided by the present application are provided with a first curved surface at the rounded corner. Through the curved surface transition of the first curved surface between the first groove surface and the second groove surface, the end rounded corner of the cutting edge is blunt. Thus, during the milling process of the tool, the chipping problem of the end rounded corner of the cutting edge is improved, the service life of the tool is extended, and the processing quality of the workpiece is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a tool in some embodiments of the present application;

[0022] Figure 2Structural schematic of the cutter head part in some embodiments of the present application Figure 1 ;

[0023] Figure 3 Structural schematic of the cutter head part in some embodiments of the present application Figure 2 ;

[0024] Figure 4 Structural schematic diagram of the first curved surface and the second curved surface in some embodiments of the present application;

[0025] Figure 5 is Figure 4 Enlarged structural schematic diagram of part A shown;

[0026] Figure 6 Structural schematic diagram of the fillet in some embodiments of the present application;

[0027] Figure 7 Structural schematic diagram of the fillet in the related art.

[0028] Explanation of reference numerals:

[0029] 1, first groove surface; 2, second groove surface; 3, fillet;

[0030] 100, cutter; 110, connecting piece; 120, cutter head part; 121, cutting edge; 1211, side cutting surface; 1212, end face; 1213, fillet; 1214, second groove surface; 1215, first curved surface; 12151, first marking line; 12152, second marking line; 12153, third marking line; 12154, first transition area; 12155, second transition area; 1216, first groove surface; 1217, second curved surface; 12171, first arc surface area; 12172, second arc surface area; 12173, third arc surface area; 122, first chip pocket; 123, second chip pocket. Detailed implementation manners

[0031] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0033] In addition, if there is a term "and / or", "and / or" is only an associative relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after. If there are terms such as "first" and "second", these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present application, unless otherwise clearly specified and limited, if there are terms such as "install", "connect", "join", "fix", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, etc., the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0037] In existing milling cutters, a fillet is formed at the connection between the cutting edge face and the end face of the cutting edge. The fillet is one of the main stress points during the milling process of the milling cutter. In some related technologies, there is a lack of protection for the fillet, so that during the milling operation, the fillet is prone to chipping risk. Refer to Figure 7 As shown, in some other related technologies, the milling cutter is provided with two chip flutes to reduce the possibility of tool sticking during the milling operation of the milling cutter and improve the tool life. In this method, the flute walls of the two chip flutes are the first flute surface 1 and the second flute surface 2 respectively. The first flute surface 1 is arranged as a plane and covers part of the fillet 3 area, so as to play a certain role in protecting the fillet 3. However, this method can only protect part of the fillet 3 or when the fillet 3 is small, and still cannot protect the fillet 3 well, and cannot adjust the sharpness of the fillet 3 according to the workpiece, so the application range of the milling cutter is limited.

[0038] Therefore, the embodiment of the present application provides a tool 100, which can be used for the processing operation of a workpiece and improve the wear resistance of the tool 100 at the same time. The tool 100 provided by the present application can improve the chipping problem of the fillet 1213 at the end of the cutting edge 121, improve the service life of the tool 100, and ensure the processing quality of the workpiece.

[0039] Combined with Figure 1 and Figure 2 As shown, the tool 100 includes a connecting member 110 and a cutter head member 120. The cutter head member 120 is connected to one end of the connecting member 110, and the cutter head member 120 includes at least one cutting edge 121 provided on the circumferential side of the cutter head member 120.

[0040] Please refer to Figure 3 and Figure 4 together, wherein the cutting edge 121 includes a side cutting face 1211, an end face 1212, a first flute surface 1216, a first curved surface 1215 and a second flute surface 1214. A fillet 1213 is formed at the connection between the side cutting face 1211 and the end face 1212. The first flute surface 1216, the first curved surface 1215 and the second flute surface 1214 are all located inside the cutting edge 121. The first curved surface 1215 is smoothly connected to the first flute surface 1216 and the second flute surface 1214 respectively, and one side edge of the first curved surface 1215 coincides with the arc of the fillet 1213.

[0041] Exemplarily, the connecting member 110 may be a metal rod of a cylindrical structure, one end of which is connected to the cutter head member 120, and the other end is detachably mounted on an external driving member.

[0042] Combined together Figure 3 As shown, cutting edges 121 are provided on the circumferential side of the cutter head member 120. The number of the cutting edges 121 may be one, two, three, four, five, etc., and can be reasonably selected according to actual requirements and milling effects.

[0043] In this embodiment, the number of the cutting edges 121 is four. The four cutting edges 121 are spaced apart in a spiral distribution manner, and the advancing directions of the four cutting edges 121 are the same. Each cutting edge 121 has a side cutting surface 1211 for cutting and advancing, and a fillet 1213 is formed at the connection between the end of the side cutting surface 1211 away from the connecting member 110 and the end surface 1212.

[0044] Combined together Figure 4 and Figure 6 As shown, a second receiving groove for discharging metal chips is formed between two adjacent cutting edges 121 that are spaced apart, and a first receiving groove is further formed at the end of the second receiving groove away from the connecting member 110. Through the cooperative setting of the first receiving groove and the second receiving groove, the chip discharging effect during the operation of the tool 100 is improved. The first groove surface 1216 is the part of the inner side surface of the cutting edge 121 that serves as the groove wall of the first receiving groove, and the second groove surface 1214 is the part of the inner side surface of the cutting edge 121 that serves as the groove wall of the second receiving groove. At the same time, a first curved surface 1215 is provided at the fillet 1213 of the cutting edge 121, and the first groove surface 1216 and the second groove surface 1214 are smoothly transitioned through the first curved surface 1215. The side line of the first curved surface 1215 coincides with the arc line of the fillet 1213, and the other side lines respectively coincide with the side lines of the first groove surface 1216 and the second groove surface 1214, so as to blunt the fillet 1213. During the operation, the first curved surface 1215 can be the end wear surface of the milling cutter, thereby avoiding the phenomenon that the fillet 1213 is broken due to stress. And the first curved surface 1215 can provide comprehensive protection for the fillet 1213, improving the problem in the related art that some regions of the fillet 1213 are not protected and the wear degrees of each region are different, and enhancing the service life of the tool 100.

[0045] It should be noted that, for the convenience of understanding, the inner side of the cutting edge 121 mentioned in this application refers to the side surface of the cutting edge 121 on the advancing direction side.

[0046] As Figure 4 shown, in some embodiments, a second curved surface 1217 is provided on one side of the second groove surface 1214 connected to the first curved surface 1215. Under the limitation of the first curved surface 1215, the second curved surface 1217 forms a corresponding preset rake angle with the radial direction of the tool 100.

[0047] Exemplarily, due to the setting of the first curved surface 1215, the connection between the second groove surface 1214 and the first curved surface 1215 becomes one of the main stress points. Therefore, the front angle value of the second curved surface 1217 can be set accordingly to adjust the sharpness of the fillet 1213, so as to improve the wear resistance of the fillet 1213 area.

[0048] Combined with Figure 4 and Figure 5 As shown, in some embodiments, the first curved surface 1215 includes a plurality of transition regions, and the second curved surface 1217 forms a plurality of arc surface regions corresponding to the transition regions. Each arc surface region forms a corresponding preset front angle with the radial direction of the tool 100.

[0049] Exemplarily, the preset front angle value refers to the angle between the tangent of the second curved surface 1217 and the radial direction of the tool 100. By setting a plurality of transition regions, the front angle distribution sizes of the corresponding arc surface regions are respectively controlled. At the same time, according to different machining materials, the front angles of each arc surface region can be adjusted to improve the limited application range of the tool 100.

[0050] Combined with Figure 4 and Figure 5 As shown, in some embodiments, the first curved surface 1215 is provided with a first transition region 12154 and a second transition region 12155; under the limitation of the first transition region 12154 and the second transition region 12155, the second curved surface 1217 is correspondingly provided with a first arc surface region 12171, a second arc surface region 12172 and a third arc surface region 12173. The first arc surface region 12171 forms a first preset front angle with the radial direction of the tool 100, the second arc surface region 12172 forms a second preset front angle with the radial direction of the tool 100, and the third arc surface region 12173 forms a third preset front angle with the radial direction of the tool 100.

[0051] Exemplarily, the angle sizes of the first preset front angle, the second preset front angle and the third preset front angle are respectively controlled by the first transition region 12154 and the second transition region 12155, and can be adjusted accordingly according to different machining materials.

[0052] As Figure 5 shown, in some embodiments, the range value of the first preset front angle is: -10° to 0°, so as to improve the wear resistance of the range corresponding to the fillet 1213 and the first arc surface region 12171, ensure that the cutting edge 121 has sufficient strength, and improve the wear resistance of the tool 100.

[0053] As Figure 5 shown, in some embodiments, the range value of the second preset front angle is: -15° to 15°, so as to improve the wear resistance of the range corresponding to the fillet 1213 and the second arc surface region 12172.

[0054] As Figure 5 shown, in some embodiments, the range value of the third preset rake angle is: -15° to 15° to improve the wear resistance of the corresponding range of the rounded corner 1213 and the third arc surface area 12173.

[0055] As Figure 5 shown, in some embodiments, the regional boundaries of the first transition area 12154 and the second transition area 12155 are the first marking line 12151, the second marking line 12152 and the third marking line 12153 in sequence. The first marking line 12151 is parallel to the axial direction of the tool 100, the third marking line 12153 is parallel to the radial direction of the tool 100, and the third marking line 12153 is perpendicular to the first marking line 12151.

[0056] Exemplarily, the angle range of the rounded corner 1213 is 90°. Correspondingly, the first marking line 12151 and the third marking line 12153 form a 90° angle.

[0057] As Figure 5 shown, in some embodiments, the included angle between the second marking line 12152 and the first marking line 12151 is 45°.

[0058] Exemplarily, the first marking line 12151, the second marking line 12152 and the third marking line 12153 can respectively control the angle ranges of the first arc surface area 12171, the second arc surface area 12172 and the third arc surface area 12173. In this embodiment, the angle range of the first arc surface area 12171 is 0° to 30°, the angle range of the second arc surface area 12172 is 30° to 60°, and the angle range of the first arc surface area 12171 is 60° to 90°.

[0059] In addition, the tool 100 provided by the present application has a good cutting effect during application. At the initial stage of cutting, the tool 100 cuts smoothly without abnormality; during the cutting process, the cutting state is good and the surface finish of the workpiece meets the standard; the tool 100 cuts smoothly without abnormality; after cutting is completed, the workpiece is smooth, the roughness meets the requirements, and the tool 100 has not failed and can still process the next workpiece.

[0060] The embodiment of the present application also provides a processing device, including the tool 100 in any of the above embodiments.

[0061] Exemplarily, the processing device may include a driving member and the tool 100. The tool 100 is installed on the driving member, and under the drive of the driving member, the tool 100 performs a plunge cutting operation.

[0062] This embodiment has the tool 100 in any of the above embodiments. Therefore, it has all the beneficial effects of the tool 100 in any of the above embodiments, which will not be elaborated here one by one.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0064] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A tool, characterized in that: include: Connectors; A cutter head member, the cutter head member is connected to one end of the connecting member, and the cutter head member includes at least one cutting edge arranged on a peripheral side of the cutter head member; Wherein, the blade includes a side blade surface, an end face, a first groove surface, a first curved surface and a second groove surface, the connection between the side blade surface and the end face forms a fillet, the first groove surface, the first curved surface and the second groove surface are all located on the inner side of the blade, the first curved surface is smoothly connected to the first groove surface and the second groove surface respectively, and a side edge line of the first curved surface coincides with the fillet arc line.

2. The tool according to claim 1, characterized in that A second curved surface is provided on one side of the second groove surface connected to the first curved surface. Under the restriction of the first curved surface, the second curved surface forms a corresponding preset rake angle with the radial direction of the tool.

3. The tool according to claim 2, characterized in that The first curved surface includes a plurality of transition areas, and the second curved surface forms a plurality of arc surface areas corresponding to the transition areas, and each of the arc surface areas forms a corresponding preset rake angle with the radial direction of the tool.

4. The tool according to claim 3, characterized in that The first curved surface is provided with a first transition area and a second transition area; Under the restriction of the first transition zone and the second transition zone, the second curved surface is correspondingly provided with a first arc surface zone, a second arc surface zone and a third arc surface zone, the first arc surface zone forms a first preset rake angle with the radial direction of the tool, the second arc surface zone forms a second preset rake angle with the radial direction of the tool, and the third arc surface zone forms a third preset rake angle with the radial direction of the tool.

5. The tool according to claim 4, characterized in that The range value of the first preset rake angle is: -10°~0°.

6. The tool according to claim 4, characterized in that The range value of the second preset front angle is: -15°~15°.

7. The tool according to claim 4, characterized in that The range value of the third preset rake angle is: -15°~15°.

8. The tool according to claim 4, characterized in that The regional boundaries of the first transition zone and the second transition zone are the first marking line, the second marking line and the third marking line respectively, the first marking line is parallel to the axial direction of the tool, the third marking line is parallel to the radial direction of the tool, and the third marking line is perpendicular to the first marking line.

9. The tool according to claim 8, characterized in that The included angle between the second marking line and the first marking line is 45°.

10. A processing equipment, characterized in that: Comprising a cutting tool as claimed in any one of claims 1 to 9.

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