CN219665223U

CN219665223U - PCD milling cutter and machine tool

Info

Publication number: CN219665223U
Application number: CN202320420312.2U
Authority: CN
Inventors: 颜炳姜; 李伟秋; 王英天
Original assignee: Smartguy Intelligent Equipment Co ltd; Conprofe Technology Group Co Ltd; Smartguy Intelligent Equipment Co Ltd Guangzhou Branch
Current assignee: Smartguy Intelligent Equipment Co ltd; Conprofe Technology Group Co Ltd; Smartguy Intelligent Equipment Co Ltd Guangzhou Branch
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-09-12
Anticipated expiration: 2033-03-08

Abstract

The utility model provides a PCD milling cutter and a machine tool, wherein the PCD milling cutter comprises a cutter head and a cutter handle, the cutter handle is provided with a cutter head mounting part, and the cutter head mounting part is provided with a cutter head; the cutter head is provided with a side surface and a top surface connected with the side surface, the cutter head is provided with a first blade and a second blade which are circumferentially arranged at intervals, the first blade and the second blade respectively extend from the side surface to the top surface, and the length of the blade extending from the first blade to the top surface is longer than that of the blade extending from the second blade to the top surface; through setting up first cutting edge and second cutting edge at the tool bit, first cutting edge and second cutting edge extend to the top surface from the side respectively, and the cutting edge length that first cutting edge extended to the top surface is greater than the cutting edge length that the second cutting edge extended to the top surface, and when milling cutter work, the clearance discharge between first cutting edge and the second cutting edge was followed to the piece that first cutting edge and second cutting edge produced, avoided the piece to pile up, improved the cutting strength and the cutting effect of blade for the cutting of tool bit reaches expected effect.

Description

PCD milling cutter and machine tool

Technical Field

The utility model relates to the technical field of machining, in particular to a PCD milling cutter and a machine tool.

Background

The milling cutter is used for milling, is a rotary cutter consisting of one or more blades, and is mainly used for milling planes, profile cavities, space curved surfaces, special curves and the like in a milling machine tool. In numerical control milling, because the existing milling cutter blade is of a multi-edge structure, when the milling cutter rotates at a high speed to cut and polish a workpiece, the cutter head with multiple edges easily generates more fragments, the fragments are accumulated on the cutter head, so that the cutting strength of the blade is weaker, the cutting efficiency is affected, and the expected cutting effect cannot be achieved.

Disclosure of Invention

Accordingly, it is necessary to solve the above-mentioned problems by providing a PCD milling cutter and a machine tool, in which the PCD milling cutter can solve the problems that the existing milling cutter head is prone to chip accumulation, the cutting strength of the insert is weak, the cutting efficiency is affected, and the intended cutting effect cannot be achieved.

The utility model provides a PCD milling cutter, which comprises a cutter head and a cutter handle, wherein the cutter handle is provided with a cutter head mounting part, and the cutter head mounting part is provided with the cutter head; the cutter head is provided with a side face and a top face connected with the side face, a first cutting edge and a second cutting edge which are circumferentially arranged at intervals are arranged on the cutter head, the first cutting edge and the second cutting edge extend from the side face to the top face respectively, the length of the cutting edge from the first cutting edge to the top face is larger than that from the second cutting edge to the top face, and a cutter groove is formed between the first cutting edge and the second cutting edge.

Further, a groove is formed in a central region of the top surface of the cutter head, the first cutting edge extends from the side surface to the top surface and is connected with the side wall of the groove, and the second cutting edge extends from the side surface to the top surface and is spaced from the side wall of the groove by a certain distance.

Further, the first blade extends from the side surface to the center of the top surface, and the second blade extends from the side surface to the top surface with a certain distance from the center of the top surface.

Further, the tool handle further comprises a welding lug component and a rod portion, and the tool bit installation portion, the welding lug component and the rod portion are sequentially connected.

Further, the welding piece part is provided with a cutting part, a clearance part and a chip removal groove, wherein the clearance part, the cutting part and the chip removal groove are sequentially arranged along the circumferential direction, and the cutting part is protruded relative to the clearance part; the clearance portion comprises a transition portion and an abdication portion, the abdication portion is of an arc surface structure, and the transition portion extends from the cutting portion to the abdication portion and the diameter of the transition portion is gradually reduced.

Further, the tab member is provided with a plurality of cutting portions and the cutting portions are circumferentially spaced apart.

Further, the cutting portion comprises a polycrystalline diamond layer and a tungsten steel layer, and the polycrystalline diamond layer and the tungsten steel layer are tightly attached.

Further, the tool bit comprises a substrate and a polycrystalline diamond layer arranged on the substrate, and the substrate is arranged on the tool bit mounting part.

Further, the first blade and the second blade are both spiral.

The utility model also provides a machine tool comprising: the PCD milling cutter comprises a machine tool body and the PCD milling cutter arranged on the machine tool body.

According to the utility model, the first cutting edge and the second cutting edge are arranged on the cutter head, the first cutting edge and the second cutting edge respectively extend from the side face to the top face, the length of the cutting edge of the first cutting edge extending to the top face is longer than that of the cutting edge of the second cutting edge extending to the top face, and when the milling cutter works, fragments generated by the first cutting edge and the second cutting edge are discharged from a gap between the first cutting edge and the second cutting edge, so that accumulation of fragments is avoided, the cutting strength and the cutting effect of the cutter head are improved, and the cutting effect of the cutter head is expected.

Drawings

Fig. 1 is a schematic structural view of a PCD milling cutter according to the present utility model;

fig. 2 is a schematic diagram of a lug component of the PCD milling cutter according to the present utility model;

fig. 3 is a schematic view of a cutter head structure of the PCD milling cutter provided by the present utility model.

In the figure, 100, the knife handle; 110. a cutter head mounting portion; 120. a lug component; 121. a cutting portion; 1211. a polycrystalline diamond layer; 1212. a tungsten steel layer; 122. a clearance part; 1221. a transition section; 1222. a yielding part; 123. a chip removal groove; 130. a stem portion; 200. a cutter head; 211. a groove; 212. a first blade; 213. a second blade; 214. knife slot.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Referring to fig. 1 to 3, the present utility model provides a PCD milling cutter, comprising a cutter head 200 and a cutter handle 100, wherein the cutter handle 100 is provided with a cutter head mounting portion 110, the cutter head mounting portion 110 is provided with the cutter head 200, the cutter head 200 is provided with a side surface and a top surface connected with the side surface, a groove 211 is arranged in the center area of the top surface of the cutter head 200, a first cutting edge 212 and a second cutting edge 213 are circumferentially arranged at intervals on the cutter head 200, the first cutting edge 212 and the second cutting edge 213 extend from the side surface to the top surface, the length of the cutting edge extending from the first cutting edge 212 to the top surface is greater than the length of the cutting edge extending from the second cutting edge 213 to the top surface, and a cutter groove 214 is arranged between the first cutting edge 212 and the second cutting edge 213.

Specifically, by providing the first blade 212 and the second blade 213 in the cutter head 200, the first blade 212 and the second blade 213 extend from the side surface to the top surface, respectively, and the length of the first blade 212 extending to the top surface is longer than that of the second blade 213 extending to the top surface, when the milling cutter is operated, chips generated by the first blade 212 and the second blade 213 are discharged from the gap between the first blade 212 and the second blade 213, thereby avoiding chip accumulation, improving the cutting strength and the cutting effect of the cutter blade, and enabling the cutting of the cutter head 200 to achieve the intended effect.

In some of these embodiments, the top central region of tool tip 200 is provided with a recess 211, a first blade 212 extending from the side to the top and connecting the side walls of recess 211, and a second blade 213 extending from the side to the top and spaced from the side walls of recess 211; specifically, by providing the groove 211 on the top surface of the cutter head 200 while providing the first blade 212 and the second blade 213 on the cutter head 200, the first blade 212 extends from the side surface of the cutter head 200 to the top surface of the cutter head 200 and connects the side walls of the groove 211, and the second blade 213 extends from the side surface of the cutter head 200 to the top surface of the cutter head 200 and maintains a certain distance from the side walls of the groove 211, when the milling cutter is operated, chips generated by the first blade 212 and the second blade 213 can be discharged into the groove 211 and chips can be discharged from the gap between the second blade 213 and the side walls of the groove 211, thereby avoiding accumulation of chips.

In some of these embodiments, the first blade 212 extends from the side to the center of the top surface and the second blade 213 extends from the side to the top surface at a distance from the center of the top surface; specifically, the first blade 212 extends from the side surface of the cutter head 200 to the center of the top surface of the cutter head 200, and the second blade 213 extends from the side surface of the cutter head 200 to the top surface of the cutter head 200 at a distance from the center of the top surface, and when the milling cutter is operated, chips generated by the first and second blades 212 and 213 are discharged from the gap between the first and second blades 212 and 213, thereby avoiding accumulation of chips.

In some embodiments, the tool shank 100 further includes a lug member 120 and a shank 130, the tool shank 100 includes a tool bit mounting portion 110, a lug member 120 and a shank 130 connected in sequence, the lug member 120 is provided with a cutting portion 121, a clearance portion 122 and a junk slot 123, the clearance portion 122, the cutting portion 121 and the junk slot 123 are sequentially disposed in a circumferential direction, and the cutting portion 121 is raised relative to the clearance portion 122; the clearance portion 122 includes a transition portion 1221 and a relief portion 1222, the relief portion 1222 has an arc surface structure, and the transition portion 1221 extends from the cutting portion 121 to the relief portion 1222 and has a diameter gradually smaller; specifically, the cutting portion 121 is used for cutting a workpiece, the clearance portion 122 is used for giving way to the component, interference between the workpieces when different workpieces are cut by the plurality of cutting portions 121 is avoided, the chip groove 123 is used for discharging chips generated in the cutting process of the cutting portion 121, and the influence of chip accumulation on cutting efficiency is avoided.

Wherein, the first blade 212 and the second blade 213 are provided on the tool bit 200 for cutting and polishing the workpiece, and the welding tab member 120 is provided for contour cutting the workpiece, it can be understood that when the tool bit 200 polishes a workpiece, contour cutting can be performed on other parts of the workpiece through the welding tab member 120; the tab element 120 may also contour another work piece as the tool tip 200 polishes the work piece.

In some of these embodiments, the tab member 120 is provided with a plurality of cutting portions 121 and the cutting portions 121 are circumferentially spaced apart; specifically, the number of the cutting portions 121 may be set according to specific requirements by the tab member 120, where two sides of each cutting portion 121 are respectively provided with a corresponding clearance portion 122 and junk slots 123, and when the number of the cutting portions 121 is plural, the plural cutting portions 121 are circumferentially spaced along the center line of the shank 100.

In some of these embodiments, cutting portion 121 includes a polycrystalline diamond layer 1211 and a tungsten steel layer 1212, polycrystalline diamond layer 1211 and tungsten steel layer 1212 being in close proximity; specifically, the polycrystalline diamond layer 1211 is used for cutting a workpiece, and the tungsten steel layer 1212 is used for supporting the polycrystalline diamond layer 1211, so that the cutting effect is ensured.

In some of these embodiments, the tool bit 200 includes a substrate mounted on the tool bit mounting portion 110, and a polycrystalline diamond layer 1211 disposed on the substrate; specifically, the base is welded to the bit mounting portion 110.

Alternatively, the materials of the tool shank 100 and the substrate are all cemented carbide, and the tool shank 100 and the substrate are required to be made of proper cemented carbide materials, so that the hardness is higher, and the wear resistance is better.

In some of these embodiments, first blade 212 and second blade 213 are each helical, and first blade 212 and second blade 213 are arranged in a helix, enhancing the cutting force of tool tip 200.

In some of these embodiments, the first blade 212 and the second blade 213 are triangular or trapezoidal in blade shape.

In some embodiments, the tool tip 200 and the shank 130 are both cylindrical.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The PCD milling cutter is characterized by comprising a cutter head and a cutter handle, wherein the cutter handle is provided with a cutter head mounting part, and the cutter head mounting part is provided with the cutter head; the cutter head is provided with a side face and a top face connected with the side face, a first cutting edge and a second cutting edge which are circumferentially arranged at intervals are arranged on the cutter head, the first cutting edge and the second cutting edge extend from the side face to the top face respectively, the length of the cutting edge from the first cutting edge to the top face is larger than that from the second cutting edge to the top face, a cutter groove is formed between the first cutting edge and the second cutting edge, and the cutter head is cylindrical.

2. The PCD milling cutter of claim 1, wherein the cutter head has a central region of a top surface provided with a recess, the first cutting edge extending from the side surface to the top surface and connecting a side wall of the recess, the second cutting edge extending from the side surface to the top surface and being spaced from the side wall of the recess.

3. The PCD milling cutter of claim 1, wherein the first cutting edge extends from the side surface to a center of the top surface, and the second cutting edge extends from the side surface to the top surface and is spaced from the center of the top surface.

4. The PCD milling cutter of claim 1, wherein the shank further comprises a lug member and a shank, the bit mounting portion, the lug member and the shank being connected in sequence.

5. The PCD milling cutter of claim 4, wherein the chip component is provided with a cutting portion, a clearance portion, and a junk slot, the clearance portion, the cutting portion, and the junk slot being disposed in circumferential order, the cutting portion being raised relative to the clearance portion; the clearance portion comprises a transition portion and an abdication portion, the abdication portion is of an arc surface structure, and the transition portion extends from the cutting portion to the abdication portion and the diameter of the transition portion is gradually reduced.

6. The PCD milling cutter of claim 4, wherein the fin member is provided with a plurality of cutting portions and the cutting portions are circumferentially spaced apart.

7. The PCD milling cutter of claim 5, wherein the cutting portion comprises a layer of polycrystalline diamond and a layer of tungsten steel, the layer of polycrystalline diamond and the layer of tungsten steel being in close proximity.

8. The PCD milling cutter of claim 1, wherein the cutter head comprises a substrate and a layer of polycrystalline diamond disposed on the substrate, the substrate being mounted on the cutter head mounting portion.

9. The PCD milling cutter of claim 1, wherein the first cutting edge and the second cutting edge are each helical.

10. A machine tool, comprising: a machine tool body and a PCD milling cutter according to any one of claims 1 to 9 disposed on the machine tool body.