Cutter

Abstract

The utility model discloses a cutter. The cutter comprises a handle part and a head part, the head comprises a first cutting section and a second cutting section which are distributed in the axial direction of the head, the two opposite ends of the second cutting section are connected with the handle and the first cutting section correspondingly, and a plurality of first cutting edges are arranged at the end, away from the second cutting section, of the first cutting section and distributed around the axis of the head in the circumferential direction at intervals. A plurality of second cutting edges are arranged at the end, close to the first cutting section, of the second cutting section and distributed around the axis of the head in the circumferential direction at intervals. According to the cutter, due to the fact that the first cutting edge and the second cutting edge are arranged on the cutter, in the process that the cutter is used for machining a workpiece, the first cutting edge can conduct rough machining on the workpiece firstly, and then the second cutting edge can conduct finish machining on the workpiece; therefore, the cutter can finish rough machining and finish machining of the workpiece at the same time in one-time machining.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool technical field, especially a tool. BACKGROUND

[0002] Tool is the tool for cutting processing in mechanical manufacturing, also called cutting tool. Tool can be divided into tool for processing various external surfaces, hole processing tool, thread processing tool, gear processing tool and cutting tool according to the form of workpiece surface.

[0003] In the related art, when tool processes workpiece, in order to improve the precision of workpiece after processing, another tool is needed to complete the finish machining of workpiece after the rough machining of workpiece is completed by one tool.

[0004] Correspondingly, when processing workpiece, two tools are needed to complete the rough machining and finish machining of workpiece respectively, so that the processing efficiency of workpiece is relatively low. INVENTION CONTENTS

[0005] The utility model discloses a tool that can simultaneously process rough machining and finish machining of workpiece.

[0006] The tool provided by the utility model embodiment comprises a handle part and a head part, the head part comprises a first cutting section and a second cutting section distributed along the axial direction of the head part, the opposite ends of the second cutting section are connected with the handle part and the first cutting section respectively, the end of the first cutting section away from the second cutting section is provided with a plurality of first cutting edges, the first cutting edges have a first rake angle, the plurality of first cutting edges are distributed at intervals in the circumferential direction around the axis of the head part, a first tool groove is formed between any two adjacent first cutting edges, the first cutting section is provided with a first core diameter at the first tool groove, the end of the second cutting section close to the first cutting section is provided with a plurality of second cutting edges, the second cutting edges have a second rake angle, the second rake angle is greater than the first rake angle, the plurality of second cutting edges are distributed at intervals in the circumferential direction around the axis of the head part, a second tool groove is formed between any two adjacent second cutting edges, and the second cutting section is provided with a second core diameter at the second tool groove.

[0007] The tool has at least the following beneficial effects: in the tool of the application, the first cutting edges and the second cutting edges are arranged on the tool, in the processing of the tool to the workpiece, the first cutting edges can first process the rough machining of the workpiece, and then the second cutting edges can process the finish machining of the workpiece, so that the tool of the application can simultaneously complete the rough machining and finish machining of the workpiece in one processing.

[0008] The first rake angle is 6 to 10 degrees according to the tool provided by the utility model embodiment.

[0009] According to the embodiments of the present invention, the second rake angle of the cutting tool is 12° to 16°.

[0010] According to the embodiment of this utility model, the cross-sectional diameter of the head is D, the first core diameter is 0.55D, and the second core diameter is 0.65D.

[0011] According to the embodiment of the present invention, the first cutting edge has a first cutting clearance angle and a second cutting clearance angle, wherein the first cutting clearance angle is 9° to 12° and the second cutting clearance angle is 25° to 30°.

[0012] According to the embodiment of the present invention, the second cutting edge has a first cutting clearance angle and a second cutting clearance angle, wherein the first cutting clearance angle is 13° to 15° and the second cutting clearance angle is 25° to 30°.

[0013] According to the embodiment of the present invention, the tool has a finishing edge structure on the first flank face of the second cutting edge, and the cutting edge width of the finishing edge structure is 0.05mm to 0.1mm.

[0014] According to the embodiments of the present invention, the blade angle of the finishing blade structure is 1° to 4°.

[0015] According to the tool described in this embodiment of the present invention, the end face of the first cutting section opposite to the second cutting section is arranged perpendicular to the axis of the head.

[0016] According to the embodiments of this utility model, the cutting tool has five first cutting edges and five second cutting edges.

[0017] 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

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the structure of a cutting tool according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A structural schematic diagram of the cutting tool from another perspective;

[0021] Figure 3 for Figure 2 A cross-sectional view of section AA of the tool shown;

[0022] Figure 4 for Figure 2 A cross-sectional view of the BB section of the tool shown;

[0023] Figure 5 Structure diagram of the first cutting edge of one embodiment of the utility model;

[0024] Figure 6 Structure diagram of the second cutting edge of one embodiment of the utility model.

[0025] Reference signs:

[0026] Handle 100;

[0027] Head 200; First cutting section 210; First cutting edge 211; First cutting groove 212; Second cutting section 220; Second cutting edge 221; Light polishing edge structure 221a; Second cutting groove 222. DETAILED DESCRIPTION

[0028] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0030] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, the second is described, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0031] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0032] The following will be described with reference to Figures 1 to 6 The tool of the present application will be described in detail.

[0033] Reference Figure 1 And Figure 2According to the tool of the utility model, the first cutting edge 211 on the first cutting section 210 of the head 200 is firstly used to cut the workpiece to complete rough machining of the workpiece, and then the second cutting edge 221 on the second cutting section 220 of the head 200 is used to cut the workpiece again to complete finish machining of the workpiece, so that the tool can complete rough machining and finish machining of the workpiece at the same time, and after the rough machining of the workpiece is completed, the workpiece can be finish machined without replacing the tool, so that the machining efficiency of the workpiece is higher.

[0034] It can be understood that in the process that the tool of the application processes the workpiece, the first cutting edge 211 on the first cutting section 210 of the tool is firstly used to cut the workpiece to complete rough machining of the workpiece, and then the second cutting edge 221 on the second cutting section 220 of the tool is used to cut the workpiece again to complete finish machining of the workpiece; so that in the tool of the application, by arranging the first cutting section 210 and the second cutting section 220 on the head 200, arranging the first cutting edge 211 on the first cutting section 210 and arranging the second cutting edge 221 on the second cutting section 220, the tool of the application can complete rough machining and finish machining of the workpiece at the same time, and after the rough machining of the workpiece is completed, the workpiece can be finish machined without replacing the tool, so that the machining efficiency of the workpiece is higher.

[0035] It should be noted that since the first cutting edge 211 needs to perform rough machining on the workpiece, and the second cutting edge 221 performs finish machining on the workpiece, that is, the first cutting edge 211 needs a larger feed amount when cutting the workpiece relative to the second cutting edge 221, and a larger amount of machining is performed, accordingly, the first cutting edge 211 generates more waste when cutting the workpiece relative to the second cutting edge 221, and the first cutting edge 211 needs to generate a larger cutting force when cutting the workpiece relative to the second cutting edge 221.

[0036] It can be understood that, in the cutter of the application, the first cutting section 210 has a first core diameter at the first flute 212, the second cutting section 220 has a second core diameter at the second flute 222, and the second core diameter is greater than the first core diameter, because the first core diameter is smaller than the second core diameter, correspondingly, the depth of the first flute 212 can be set deeper than the second flute 222, so that the first flute 212 can have a larger chip space, thereby enabling the first flute 212 to smoothly discharge the waste chips generated by the first cutting edge 211 when cutting the workpiece, the waste chips generated by the first cutting edge 211 can be discharged more timely and smoothly, thereby reducing the probability of the first cutting edge 211 generating heat and breaking due to the waste chips being blocked in the first flute 212 and not being discharged in time.

[0037] It can be understood that, because the first rake angle of the first cutting edge 211 is smaller than the second rake angle of the second cutting edge 221, the first cutting edge 211 can generate greater cutting force during cutting the workpiece to smoothly complete rough machining of the workpiece, and the first rake angle of the first cutting edge 211 is smaller than the second rake angle of the second cutting edge 221, which can make the first cutting edge 211 have higher strength relative to the second cutting edge 221 to reduce the probability of the first cutting edge 211 generating a broken edge during cutting the workpiece.

[0038] In some embodiments of the utility model, with reference to Figure 5 , the first rake angle a1 is 6-10°.

[0039] It can be understood that, by setting the first rake angle of the first cutting edge 211 to 6-10°, the first cutting edge 211 can have better anti-collapse and anti-impact properties during rough machining of the workpiece, so that the cutter of the utility model has a longer service life.

[0040] In further embodiments of the utility model, the first rake angle is preferably 8°.

[0041] In some embodiments of the utility model, with reference to Figure 6 , the second rake angle b1 is 12-16°.

[0042] It can be understood that, by setting the second rake angle of the second cutting edge 221 to 12-16°, the second cutting edge 221 can be sharper, so that the second cutting edge 221 can generate smaller cutting force and cutting heat during finishing machining of the workpiece, thereby enabling the second cutting edge 221 to have a longer service life, and further enabling the cutter of the application to have a longer service life.

[0043] In further embodiments of the utility model, the second rake angle is preferably 14°.

[0044] In some embodiments of the utility model, reference Figure 4 , the cross section diameter of head 200 is D, the first core diameter is 0.55D, and the second core diameter is 0.65D.

[0045] It can be understood that setting the first core diameter as 0.55D can make the first cutting edge 211 have enough chip space in the rough machining process, so that the waste chip generated by the first cutting edge 211 can be discharged in time and smoothly, thereby reducing the probability of the occurrence of problems such as breakage and heating of the first cutting edge 211 due to chip jamming in the first flute 212.

[0046] It can be understood that setting the second core diameter as 0.65D can make the second cutting edge 221 have higher strength and rigidity, reduce the probability of the occurrence of bending problems of the second cutting edge 221 due to cutting force generated in the high-speed rotation cutting process, and reduce the probability of the occurrence of bending problems of the cutting tool of the utility model, thereby effectively ensuring the precision and surface quality of the product machined by the cutting tool of the utility model.

[0047] In some embodiments of the utility model, reference Figure 5 , the first cutting edge 211 has a cutting first clearance angle and a cutting second clearance angle, the cutting first clearance angle a2 is 9° to 12°, and the cutting second clearance angle a3 is 25° to 30°.

[0048] It can be understood that setting the cutting first clearance angle as 9° to 12° and the cutting second clearance angle as 25° to 30° can improve the anti-collapse and wear resistance of the first cutting edge 211 in the rough machining process, thereby reducing the probability of the occurrence of blade collapse of the first cutting edge 211, reducing the cutting force and cutting heat generated by the first cutting edge 211 in the machining process, and further greatly reducing the probability of the breakage of the cutting tool of the utility model.

[0049] In further embodiments of the utility model, preferably, the cutting first clearance angle is 10°, and the cutting second clearance angle is 27°.

[0050] In some embodiments of the utility model, reference Figure 6 , the second cutting edge 221 has a first cutting clearance angle and a second cutting clearance angle, the first cutting clearance angle b2 is 13° to 15°, and the second cutting clearance angle b3 is 25° to 30°.

[0051] It can be understood that the first cutting clearance angle is set to 13° to 15°, and the second cutting clearance angle is set to 25° to 30°, so that the second cutting edge 221 has good anti-collapse and wear resistance; the setting of the first cutting clearance angle and the second cutting clearance angle can make the second cutting edge 221 generate less cutting heat in the process of cutting the workpiece, so that the second cutting edge 221 can cut the workpiece more smoothly, so as to reduce the deformation of the workpiece in the cutting process.

[0052] In further embodiments of the utility model, preferably, the first cutting clearance angle is 14°, and the second cutting clearance angle is 27°.

[0053] In some embodiments of the utility model, referring to Figure 6 , the first relief surface of the second cutting edge 221 is provided with a light finishing edge structure 221a, and the edge width l of the light finishing edge structure 221a is 0.05mm to 0.1mm.

[0054] It can be understood that by setting the light finishing edge structure 221a on the first relief surface of the second cutting edge 221, the anti-collapse and wear resistance of the edge of the second cutting edge 221 can be improved; since the light finishing edge structure 221a has good finishing and anti-vibration performance, the cutter of the utility model can generate smaller vibration in the process of machining products, so as to improve the quality of the products machined by the cutter of the utility model.

[0055] In further embodiments of the utility model, the edge angle of the light finishing edge structure 221a is 1° to 4°.

[0056] Preferably, the edge angle of the light finishing edge structure 221a is 2°.

[0057] In some embodiments of the utility model, the end face of the first cutting section 210 away from the second cutting section 220 is perpendicular to the axis of the head 200.

[0058] It can be understood that since the end face of the first cutting section 210 away from the second cutting section 220 is perpendicular to the axis of the head 200, the tool of the utility model has faster tool setting speed and higher tool setting accuracy.

[0059] In some embodiments of the utility model, referring to Figure 3 and Figure 4 , the first cutting edge 211 and the second cutting edge 221 are each provided with five.

[0060] Although embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A cutting tool, characterized in that, include: Handle; The head includes a first cutting segment and a second cutting segment distributed along the axial direction of the head. The two opposite ends of the second cutting segment are connected to the shank and the first cutting segment, respectively. The end of the first cutting segment away from the second cutting segment is provided with a plurality of first cutting edges. The first cutting edges have a first rake angle. The plurality of first cutting edges are circumferentially spaced around the axis of the head. A first groove is formed between any two adjacent first cutting edges. The first cutting segment has a first core diameter at the first groove. The end of the second cutting segment near the first cutting segment is provided with a plurality of second cutting edges. The second cutting edges have a second rake angle, which is greater than the first rake angle. The plurality of second cutting edges are circumferentially spaced around the axis of the head. A second groove is formed between any two adjacent second cutting edges. The second cutting segment has a second core diameter at the second groove, which is greater than the first core diameter.

2. The cutting tool according to claim 1, characterized in that, The first anterior angle is 6° to 10°.

3. The cutting tool according to claim 1, characterized in that, The second anterior angle is 12° to 16°.

4. A cutting tool according to claim 1, characterized in that, The cross-sectional diameter of the head is D, the first core diameter is 0.55D, and the second core diameter is 0.65D.

5. A cutting tool according to claim 1, characterized in that, The first cutting edge has a first cutting clearance angle and a second cutting clearance angle, wherein the first cutting clearance angle is 9° to 12° and the second cutting clearance angle is 25° to 30°.

6. A cutting tool according to claim 1, characterized in that, The second cutting edge has a first cutting clearance angle and a second cutting clearance angle, wherein the first cutting clearance angle is 13° to 15° and the second cutting clearance angle is 25° to 30°.

7. A cutting tool according to claim 6, characterized in that, The first flank face of the second cutting edge is provided with a finishing edge structure, the width of which is 0.05mm to 0.1mm.

8. A cutting tool according to claim 7, characterized in that, The blade angle of the polishing blade structure is 1° to 4°.

9. A cutting tool according to claim 1, characterized in that, The end face of the first cutting section opposite to the second cutting section is perpendicular to the axis of the head.

10. A cutting tool according to claim 1, characterized in that, Both the first cutting edge and the second cutting edge are provided with five.

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