A forming knife

Abstract

The utility model discloses a forming knife, in the forming knife of the present application, the tool bit includes first cutting part and second cutting part, after forming knife installs to lathe, when needing to carry out drilling to work piece, can adopt first cutting part to carry out drilling to work piece, when needing to carry out grinding to work piece, can adopt second cutting part to carry out grinding to work piece, from make single forming knife can complete the drilling of work piece, also can complete the grinding of work piece, reduce the frequency of changing tool, improve the processing efficiency of lathe, simultaneously, because the diameter of second cutting part is greater than the diameter of first cutting part, and second end blade is located one end of second cutting part away from first cutting part, make second cutting part when carrying out grinding to work piece, first cutting part can be away from work piece, to reduce the influence of first cutting part to work piece, guarantee second cutting part to work piece and carry out the smooth processing.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a forming tool. Background Technology

[0002] In milling, in some cases, it is necessary to drill and grind the workpiece sequentially. In related technologies, a drilling tool needs to be installed on the machine tool first to complete the drilling of the workpiece, and then a grinding tool needs to be installed on the machine tool to complete the grinding of the workpiece. However, when grinding the workpiece, the drilling tool on the machine tool needs to be replaced with a grinding tool, and replacing the drilling tool with a grinding tool takes a certain amount of time, resulting in low processing efficiency of the machine tool. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art. This utility model provides a forming tool, and the machine tool using the forming tool of this embodiment has higher processing efficiency for workpieces.

[0004] The forming knife provided according to the embodiment of this utility model includes a handle and a cutting head; the cutting head is connected to the handle, and the cutting head has a first cutting part and a second cutting part distributed axially. The first cutting part and the second cutting part are connected to the end opposite to the handle, and the diameter of the first cutting part is smaller than the diameter of the second cutting part. The first cutting part is used for drilling, and the second cutting part is used for grinding. The circumferential surface of the first cutting part is provided with a plurality of first peripheral cutting edges distributed circumferentially around the axis of the cutting head. The end face of the first cutting part opposite to the second cutting part is provided with a plurality of first end cutting edges distributed circumferentially around the axis of the cutting head. The end face of the second cutting part opposite to the first cutting part is provided with a plurality of second end cutting edges distributed circumferentially around the axis of the cutting head. The circumferential surface of the second cutting part is provided with a plurality of second peripheral cutting edges distributed circumferentially around the axis of the cutting head. The first peripheral cutting edge, the first end cutting edge, the second peripheral cutting edge, and the second end cutting edge are arranged in a one-to-one correspondence in quantity.

[0005] The forming cutter of this utility model has at least the following beneficial effects: In the forming cutter of this application, the cutter head includes a first cutting part and a second cutting part. After the forming cutter is installed on the machine tool, when drilling is required on the workpiece, the first cutting part can be used to drill the workpiece, and when grinding is required on the workpiece, the second cutting part can be used to grind the workpiece. This allows a single forming cutter to complete both drilling and grinding of the workpiece, reducing the frequency of tool replacement and improving the processing efficiency of the machine tool. At the same time, since the diameter of the second cutting part is larger than that of the first cutting part, and the second end edge is located at the end of the second cutting part away from the first cutting part, the first cutting part can be kept away from the workpiece when the second cutting part is grinding the workpiece, thereby reducing the influence of the first cutting part on the workpiece and ensuring that the second cutting part can smoothly process the workpiece.

[0006] According to the forming knife of the present invention, the first circumferential blade has a first circumferential blade rear angle and a first circumferential blade rear angle. The value of the first circumferential blade rear angle a1 is 1 degree to 3 degrees, and the value of the first circumferential blade rear angle a2 is 7 degrees to 9 degrees.

[0007] According to the forming knife of the present invention, the first end blade has a first end blade rear angle and a first end blade rear angle, the value of the first end blade rear angle b1 is 7 degrees to 9 degrees, and the value of the first end blade rear angle b2 is 18 degrees to 22 degrees.

[0008] According to the forming knife of the present utility model embodiment, the second circumferential blade has a second circumferential blade first rear angle and a second circumferential blade second rear angle. The value of the second circumferential blade first rear angle c1 is 7 degrees to 9 degrees, and the value of the second circumferential blade second rear angle c2 is 13 degrees to 17 degrees.

[0009] According to the forming knife of the present invention, the second end blade has a second end blade first rear angle and a second end blade second rear angle, the value of the second end blade first rear angle d1 is 2 degrees to 4 degrees, and the value of the second end blade second rear angle d2 is 3 degrees to 7 degrees.

[0010] According to the forming tool described in this embodiment of the present invention, a chip removal groove is provided between any two adjacent first peripheral cutting edges. There are two first peripheral cutting edges and two chip removal grooves. On the end of the first cutting part away from the second cutting part, the distance x between the two chip removal grooves is 0.04 mm to 0.06 mm.

[0011] According to the forming knife of the present utility model embodiment, a transverse blade is provided on one end of the first cutting part away from the second cutting part. The transverse blade is located between two first end blades. The extension direction of the transverse blade forms a preset angle with the front cutting surface of the first end blade. The value of the preset angle e is 53 degrees to 57 degrees.

[0012] According to the forming knife of the present utility model embodiment, the knife head further includes a third cutting part, which is connected to the end of the second cutting part away from the first cutting part, and the diameter of the third cutting part is smaller than the diameter of the second cutting part. The peripheral surface of the third cutting part is provided with multiple third peripheral cutting edges distributed circumferentially around the axis of the knife head, and the third peripheral cutting edges correspond one-to-one with the second end cutting edges and are connected.

[0013] According to the forming knife of the present utility model embodiment, the third circumferential blade has a third circumferential blade first rear angle and a third circumferential blade second rear angle. The value of the third circumferential blade first rear angle f1 is 4 degrees to 6 degrees, and the value of the third circumferential blade second rear angle f2 is 8 degrees to 12 degrees.

[0014] According to the forming tool described in this embodiment of the present invention, the core diameter D of the first cutting part is between 0.96 mm and 1.04 mm.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of a forming knife according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the first blade according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first end blade according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the second peripheral blade according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the second end blade according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the third peripheral blade according to an embodiment of the present invention; Figure 7 for Figure 1 A schematic diagram of the structure of the forming blade from point A.

[0017] Figure label: Handle 100; Cutting head 200; first cutting section 210; first peripheral cutting edge 211; first end cutting edge 212; chip removal groove 213; transverse cutting edge 214; second cutting section 220; second peripheral cutting edge 221; second end cutting edge 222; third cutting section 230; third peripheral cutting edge 231. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] The following is for reference. Figures 1 to 7 The forming tool of this application will be described in detail.

[0023] refer to Figure 1According to an embodiment of the present invention, a forming tool includes a handle 100 and a cutting head 200. The cutting head 200 is connected to the handle 100 and has an axially distributed first cutting portion 210 and a second cutting portion 220. The first cutting portion 210 and the second cutting portion 220 are connected to one end away from the handle 100, and the diameter of the first cutting portion 210 is smaller than the diameter of the second cutting portion 220. The first cutting portion 210 is used for drilling, and the second cutting portion 220 is used for grinding. The circumferential surface of the first cutting portion 210 is provided with circumferentially distributed around the axis of the cutting head 200. The first cutting part 210 has multiple first circumferential cutting edges 211, and the end face of the first cutting part 210 opposite to the second cutting part 220 has multiple first end cutting edges 212 circumferentially distributed around the axis of the cutter head 200. The end face of the second cutting part 220 opposite to the first cutting part 210 has multiple second end cutting edges 222 circumferentially distributed around the axis of the cutter head 200. The circumferential surface of the second cutting part 220 has multiple second circumferential cutting edges 221 circumferentially distributed around the axis of the cutter head 200. The first circumferential cutting edges 211, the first end cutting edges 212, the second circumferential cutting edges 221 and the second end cutting edges 222 are arranged in a one-to-one correspondence in quantity.

[0024] It is understood that after the forming cutter of this application is applied to a machine tool, after drilling the workpiece using the first cutting part 210 of the forming cutter, the second cutting part 220 of the forming cutter can then be used to grind the workpiece. Thus, the machine tool equipped with the forming cutter of this application can complete both drilling and grinding of the workpiece. During the machining process, the machine tool does not need to frequently change tools, thereby improving the machining efficiency of the machine tool. At the same time, since the machine tool using the forming cutter of this application does not need to frequently change tools, the problem of low machining accuracy caused by frequent tool changes is avoided.

[0025] It is understandable that the second end cutting edge 222 on the second cutting part 220 is located on the side of the second cutting part 220 away from the first cutting part 210, and the diameter of the second cutting part 220 is larger than the diameter of the first cutting part 210. Therefore, when the second cutting part 220 grinds the workpiece, the workpiece can be kept as far away as possible from the first end cutting edge 212 and the first peripheral cutting edge 211 on the first cutting part 210. Thus, during the grinding process of the workpiece by the second cutting part 220, the influence of the first cutting part 210 on the workpiece can be smaller.

[0026] In some embodiments of this utility model, reference is made to Figure 2 The first blade 211 has a first blade back angle and a first blade back angle. The value of the first blade back angle a1 is 1 degree to 3 degrees, and the value of the first blade back angle a2 is 7 degrees to 9 degrees.

[0027] Specifically, the value of a1 for the back angle of the first blade can be 1 degree, 2 degrees, or 3 degrees.

[0028] Specifically, the value of the back angle a2 of the first blade can be 7 degrees, 8 degrees, or 9 degrees.

[0029] In a further embodiment of this utility model, reference is made to... Figure 2 The width y1 of the back face of the first cutting edge at the back angle is 0.16 mm to 0.24 mm.

[0030] In some embodiments of this utility model, reference is made to Figure 3 The first end blade 212 has a first end blade first rear angle and a first end blade second rear angle. The value of the first end blade first rear angle b1 is 7 degrees to 9 degrees, and the value of the first end blade second rear angle b2 is 18 degrees to 22 degrees.

[0031] Specifically, the value of b1 for the first back angle of the cutting edge can be 7 degrees, 8 degrees, or 9 degrees.

[0032] Specifically, the value of b2 for the second rear angle of the first end edge can be 18 degrees, 20 degrees, or 22 degrees.

[0033] In a further embodiment of this utility model, reference is made to... Figure 3 The width y2 of the back face of the first end edge at the back angle is 0.27 mm to 0.33 mm.

[0034] In some embodiments of this utility model, reference is made to Figure 4 The second cutting edge 221 has a first rear angle and a second rear angle. The value of the first rear angle of the second cutting edge, c1, is 7 to 9 degrees, and the value of the second rear angle of the second cutting edge, c2, is 13 to 17 degrees.

[0035] Specifically, the value of c1 for the back angle of the second blade can be 7 degrees, 8 degrees, or 9 degrees.

[0036] Specifically, the value of c2 for the back angle of the second blade can be 13 degrees, 15 degrees, or 17 degrees.

[0037] In a further embodiment of this utility model, reference is made to... Figure 4 The width y3 of the back face of the second cutting edge at the first back angle is 0.46 mm to 0.54 mm.

[0038] In some embodiments of this utility model, reference is made to Figure 5 The second end blade 222 has a first rear angle and a second rear angle. The value of the first rear angle d1 is 2 degrees to 4 degrees, and the value of the second rear angle d2 is 3 degrees to 7 degrees.

[0039] Specifically, the value d1 of the back angle of the second end blade can be 2 degrees, 3 degrees, or 4 degrees.

[0040] Specifically, the value of the second back angle d2 of the second end edge can be 3 degrees, 5 degrees, or 7 degrees.

[0041] In a further embodiment of this utility model, reference is made to... Figure 5 The width y4 of the back face of the second end edge at the back angle is 0.16 mm to 0.24 mm.

[0042] In some embodiments of this utility model, reference is made to Figure 7 A chip removal groove 213 is provided between any two adjacent first peripheral cutting edges 211. There are two first peripheral cutting edges 211 and two chip removal grooves 213. On the end of the first cutting part 210 away from the second cutting part 220, the distance x between the two chip removal grooves 213 is 0.04 mm to 0.06 mm.

[0043] Specifically, the distance x between the two chip removal grooves 213 can be 0.04 mm, 0.05 mm or 0.06 mm.

[0044] In some embodiments of this utility model, reference is made to Figure 7 The first cutting part 210 is provided with a transverse blade 214 at one end away from the second cutting part 220. The transverse blade 214 is located between the two first end blades 212. The extension direction of the transverse blade 214 forms a preset angle with the rake face of the first end blade 212. The value of the preset angle e is 53 degrees to 57 degrees.

[0045] Understandably, the design of the transverse blade 214 enhances the strength of the first end blade 212.

[0046] Specifically, the preset angle value e can be 53 degrees, 55 degrees, or 57 degrees.

[0047] In some embodiments of this utility model, reference is made to Figure 1 The cutter head 200 also includes a third cutting part 230, which is connected to the end of the second cutting part 220 away from the first cutting part 210. The diameter of the third cutting part 230 is smaller than the diameter of the second cutting part 220. The circumferential surface of the third cutting part 230 is provided with multiple third peripheral cutting edges 231 distributed circumferentially around the axis of the cutter head 200. The third peripheral cutting edges 231 correspond one-to-one with the second end cutting edges 222 and are connected.

[0048] It is understandable that by setting the third cutting part 230, when the forming tool performs grinding on the workpiece, the third peripheral cutting edge 231 of the third cutting part 230 can cooperate with the second peripheral cutting edge 221 and the second end cutting edge 222 of the second cutting part 220 to perform grinding on the workpiece.

[0049] Furthermore, the third cutting part 230 and the second cutting part 220 are smoothly connected.

[0050] In some embodiments of this utility model, reference is made to Figure 6 The third cutting edge 231 has a first rear angle and a second rear angle. The value of the first rear angle of the third cutting edge, f1, is 4 to 6 degrees, and the value of the second rear angle of the third cutting edge, f2, is 8 to 12 degrees.

[0051] Specifically, the value of f1 for the back angle of the third blade can be 4 degrees, 5 degrees, or 6 degrees.

[0052] Specifically, the value of f2 for the back angle of the third blade can be 8 degrees, 10 degrees, or 12 degrees.

[0053] In a further embodiment of this utility model, reference is made to... Figure 6 The width y5 of the back face of the third cutting edge at the first back angle is 0.16 mm to 0.24 mm.

[0054] In some embodiments of this utility model, the core diameter D of the first cutting part 210 is between 0.96 mm and 1.04 mm.

[0055] Specifically, the core diameter D of the first cutting part 210 can be 0.96 mm, 1.00 mm or 1.04 mm.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A forming knife, characterized in that, include: Handle; A cutting head, connected to the tool holder, has an axially distributed first cutting portion and a second cutting portion. The first cutting portion and the end of the second cutting portion opposite to the tool holder are connected, and the diameter of the first cutting portion is smaller than the diameter of the second cutting portion. The first cutting portion is used for drilling, and the second cutting portion is used for grinding. The circumferential surface of the first cutting portion is provided with a plurality of first peripheral cutting edges distributed circumferentially around the axis of the cutting head. The end face of the first cutting portion opposite to the second cutting portion is provided with a plurality of first end cutting edges distributed circumferentially around the axis of the cutting head. The end face of the second cutting portion opposite to the first cutting portion is provided with a plurality of second end cutting edges distributed circumferentially around the axis of the cutting head. The circumferential surface of the second cutting portion is provided with a plurality of second peripheral cutting edges distributed circumferentially around the axis of the cutting head. The first peripheral cutting edge, the first end cutting edge, the second peripheral cutting edge, and the second end cutting edge are arranged in a one-to-one correspondence in quantity.

2. The forming knife according to claim 1, characterized in that, The first circumferential cutting edge has a first circumferential cutting edge rear angle and a first circumferential cutting edge rear angle. The value of the first circumferential cutting edge rear angle a1 is 1 degree to 3 degrees, and the value of the first circumferential cutting edge rear angle a2 is 7 degrees to 9 degrees.

3. A forming knife according to claim 1, characterized in that, The first end blade has a first end blade rear angle and a first end blade rear angle, wherein the value of the first end blade rear angle b1 is 7 degrees to 9 degrees and the value of the first end blade rear angle b2 is 18 degrees to 22 degrees.

4. A forming knife according to claim 1, characterized in that, The second circumferential cutting edge has a second circumferential cutting edge first rear angle and a second circumferential cutting edge second rear angle. The value of the second circumferential cutting edge first rear angle c1 is 7 degrees to 9 degrees, and the value of the second circumferential cutting edge second rear angle c2 is 13 degrees to 17 degrees.

5. A forming knife according to claim 1, characterized in that, The second end blade has a second end blade first rear angle and a second end blade second rear angle. The value of the second end blade first rear angle d1 is 2 degrees to 4 degrees, and the value of the second end blade second rear angle d2 is 3 degrees to 7 degrees.

6. A forming knife according to claim 1, characterized in that, Chip removal grooves are provided between any two adjacent first peripheral cutting edges. There are two chip removal grooves for each first peripheral cutting edge. At the end of the first cutting part away from the second cutting part, the distance x between the two chip removal grooves is 0.04 mm to 0.06 mm.

7. A forming knife according to claim 6, characterized in that, The first cutting part has a transverse cutting edge on one end away from the second cutting part. The transverse cutting edge is located between the two first end cutting edges. The extension direction of the transverse cutting edge forms a preset angle with the rake face of the first end cutting edge. The value of the preset angle e is 53 degrees to 57 degrees.

8. A forming knife according to claim 1, characterized in that, The cutter head also includes a third cutting part, which is connected to the end of the second cutting part away from the first cutting part, and the diameter of the third cutting part is smaller than the diameter of the second cutting part. The peripheral surface of the third cutting part is provided with multiple third peripheral cutting edges distributed circumferentially around the axis of the cutter head, and the third peripheral cutting edges correspond one-to-one with and are connected to the second end cutting edges.

9. A forming knife according to claim 8, characterized in that, The third circumferential cutting edge has a first rear angle and a second rear angle. The value of the first rear angle of the third circumferential cutting edge, f1, is 4 to 6 degrees, and the value of the second rear angle of the third circumferential cutting edge, f2, is 8 to 12 degrees.

10. A forming knife according to claim 1, characterized in that, The core diameter D of the first cutting part ranges from 0.96 mm to 1.04 mm.

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