CN214161518U

CN214161518U - Composite cutter

Info

Publication number: CN214161518U
Application number: CN202022716484.3U
Authority: CN
Inventors: 徐维
Original assignee: Huizhou Winone Precision Technology Co Ltd
Current assignee: Huizhou Winone Precision Technology Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-09-10
Anticipated expiration: 2030-11-20

Abstract

The utility model provides a pair of compound tool, including the handle of a knife and with the cutter body that the handle of a knife links to each other, use this compound tool when treating the work piece of processing to add man-hour, carry out the drilling operation to the work piece through the first cutting edge of cutting portion, mill the operation to the work piece through the second cutting edge of cutting portion, the chip groove can make the work piece carry out the drilling and mill the broken bits that the back produced and discharge smoothly simultaneously, and the junction of first cutting edge and second cutting edge is convex structure, the setting of convex structure further increases the slick and sly transitional coupling between first cutting edge and the second cutting edge, reduce the frictional force between cutter body and the work piece, can not collapse easily when guaranteeing that cutter body and work piece contact; so set up for this combined cutting tool can have drilling concurrently and mill two kinds of functions, has avoided changing the cutter frequently in the course of working, has improved machining efficiency and machining precision.

Description

Composite cutter

Technical Field

The utility model relates to the field of machining, in particular to compound tool.

Background

Drilling and milling are of great importance in the field of equipment manufacture, and they are two processes of great importance in machining. Because the cutting principles of drilling and milling are completely different, the traditional machining technology is that a milling cutter is replaced to perform the milling process after the drilling process is completed, namely, the traditional cutter drilling and milling cannot be combined, so that the machining efficiency is low, and the machining precision is low.

SUMMERY OF THE UTILITY MODEL

Therefore, a composite cutting tool is needed, which can simultaneously have two functions of drilling and milling to improve the machining efficiency and the machining precision.

A composite cutter comprises a cutter handle and a cutter body connected with the cutter handle, wherein a plurality of cutting parts spirally extending along the axial direction of the cutter body are arranged on the cutter body, and a chip removal groove for removing chips generated after the cutter body drills and mills a workpiece is arranged between every two adjacent cutting parts;

each cutting part comprises a first cutting edge and a second cutting edge, the first cutting edge is arranged at one end, far away from the cutter handle, of the cutting part and is used for drilling the workpiece, the second cutting edge extends spirally along the axial direction of the cutter body and is connected with the first cutting edge, and the second cutting edge is used for milling the workpiece; the joint of the first cutting edge and the second cutting edge is of a circular arc structure.

Preferably, the first cutting edge and the second cutting edge are in line contact with the workpiece to respectively drill and mill the workpiece.

Preferably, every the cutting portion is still including the rake face and the back knife face that are connected, the rake face orientation the chip groove sets up, the back knife face deviates from the chip groove sets up, the rake face with the crossing formation of back knife face first cutting sword, first cutting sword is right the chip breaking that the work piece produced after carrying out the drilling can pass through the rake face is arranged into the chip groove.

Preferably, the rake face forms a rake angle of the first cutting edge with the axial direction of the tool body, the flank face forms a relief angle of the first cutting edge with the workpiece, the rake angle is in an angle range of 10 degrees to 30 degrees, and the relief angle is in an angle range of 5 degrees to 10 degrees.

Preferably, each cutting portion further comprises a land for guiding the drilling of the first cutting edge, the land deviates from the chip groove, the land is connected with the front tool face and the rear tool face, the land and the front tool face intersect to form the second cutting edge, and chips generated by milling the workpiece by the second cutting edge can be discharged into the chip groove through the front tool face.

Preferably, a helix angle of the second cutting edge is formed between a helical extension direction of the second cutting edge and an axial direction of the tool body, the helix angle being in an angular range of 10 degrees to 20 degrees.

Preferably, the ends of the plurality of cutting portions, which are far away from the tool holder, on the tool body are converged into a whole, and a drill tip protruding outwards in the axial direction of the tool body is formed, and the drill tip can be used for positioning and drilling the workpiece in the axial direction of the tool body.

Preferably, one end of the chip groove is located on the tool shank, and the other end of the chip groove extends spirally towards the first cutting edge along the axial direction of the tool body.

Preferably, the tool body is made of cemented carbide material.

Preferably, the tool holder is used for being externally connected with a driving device, and the driving device can drive the tool body to rotate around the axial direction of the tool body through the tool holder, so that the workpiece to be machined is drilled and milled.

The utility model discloses technical scheme's beneficial effect: different from the prior art, the utility model provides a compound tool adds man-hour in the work piece of treating processing, carry out the drilling operation to the work piece through the first cutting edge of cutting portion, after the drilling operation is accomplished, along the radial movement cutter body of cutter body, mill the operation to the work piece with the second cutting edge through the cutting portion, the chip groove can make the work piece carry out the drilling and mill the smooth discharge of the chip breaking that produces after milling simultaneously, and the junction of first cutting edge and second cutting edge is convex structure, the setting of convex structure further increases the slick and sly transitional coupling between first cutting edge and the second cutting edge, reduce the frictional force between cutter body and the work piece, can not collapse easily when guaranteeing cutter body and work piece contact; so set up for this combined cutting tool can have drilling concurrently and mill two kinds of functions, has avoided changing the cutter frequently in the course of working, has improved machining efficiency and machining precision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a compound cutting tool of the present invention;

fig. 2 is a right side view of a compound cutting tool of the present invention;

fig. 3 is a front view of a compound cutting tool of the present invention;

fig. 4 is a schematic structural diagram of the compound cutting tool of the present invention.

The cutting tool comprises a tool shank 10, a tool body 20, a cutting part 21, a cutting part 211, a first cutting edge 212, a second cutting edge 213, a rake face 214, a relief face 215, a land 216, a land back 22, a chip groove 23, an arc-shaped structure 24, a drill tip 241 and a chisel edge.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that 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. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Hereinafter, a specific structure of a compound cutter will be mainly described.

It should be noted that the angle described in the present invention is an included angle formed between a specific direction and the axial direction of the tool body 20 or the workpiece to be machined, and those skilled in the art can understand and analyze the angle with reference to the specific structure and the drawings.

Referring to fig. 1, the composite cutting tool according to a preferred embodiment of the present invention includes a tool shank 10 and a tool body 20 connected to the tool shank 10. Further, in the present embodiment, the shank 10 is integrally formed with the tool body 20 to improve the robustness of the composite tool, thereby ensuring the stability of the composite tool in the process of machining a workpiece. In the present embodiment, the tool shank 10 and the tool body 20 are made of cemented carbide, but not limited thereto.

Referring to fig. 1 to 3, the tool body 20 has a plurality of cutting portions 21 extending spirally along an axial direction of the tool body 20, and a chip discharge groove 22 for discharging chips generated by drilling and milling the tool body 20 on a workpiece is formed between two adjacent cutting portions 21;

each cutting portion 21 comprises a first cutting edge 211 and a second cutting edge 212, the first cutting edge 211 is arranged at one end of the cutting portion 21 far away from the tool holder 10, the first cutting edge 211 is used for drilling a workpiece, the second cutting edge 212 extends spirally along the axial direction of the tool body 20 and is connected with the first cutting edge 211, and the second cutting edge 212 is used for milling the workpiece;

the joint of the first cutting edge 211 and the second cutting edge 212 is in a circular arc structure 23; by adopting the connection mode of the circular arc-shaped structure 23, smooth transition connection between the first cutting edge 211 and the second cutting edge 212 can be further increased, the friction force between the cutter body 20 and a workpiece is reduced, and the cutter body 20 is ensured not to be easily broken when contacting with a product to be processed.

In this embodiment, when using this compound tool to treat the work piece of processing to add, cutter body 20 rotates along self axial, carry out the drilling operation to the work piece through first cutting edge 211, after the drilling operation is accomplished, can also follow cutter body 20's radial movement cutter body, in order to mill the operation to the work piece through second cutting edge 212, chip groove 23 can make the work piece carry out the drilling and mill the smooth discharge of the chip breaking that produces of back simultaneously, make this cutter body 20 can have drilling and mill two kinds of functions concurrently, avoided frequently changing the cutter in the course of working, machining efficiency and machining precision have been improved.

In one embodiment, referring to fig. 1 and 2, during the machining process, the first cutting edge 211 and the second cutting edge 212 are in line contact with the workpiece, so as to drill and mill the workpiece, respectively.

Further, in the present embodiment, the number of the cutting portions 21 is the same as the number of the flutes 22, and the plurality of cutting portions 21 and the plurality of flutes 22 are provided at intervals from each other. Preferably, in the present embodiment, referring to fig. 1 and fig. 2, each of the cutting portions 21 and the chip flutes 22 includes two cutting portions 21 and two chip flutes 22, the two cutting portions 21 and the two chip flutes 22 are arranged oppositely, each cutting portion 21 includes a first cutting edge 211 and a second cutting edge 212, drilling operation is performed on a workpiece through the two first cutting edges 211 arranged oppositely, milling operation is performed on the workpiece by the two second cutting edges 212, and the two chip flutes 22 are used for discharging chips generated after drilling and milling, so that the overall strength of the tool body 20 is effectively improved, and high quality requirements for processing the workpiece are ensured.

In an embodiment, referring to fig. 1 and fig. 2, each cutting portion 21 further includes a front tool surface 213 and a rear tool surface 214 connected to each other, the front tool surface 213 is disposed toward the chip discharge groove 22, the rear tool surface 214 is disposed away from the chip discharge groove 22, the front tool surface 213 intersects with the rear tool surface 214 to form a first cutting edge 211, chips generated by drilling a workpiece by the first cutting edge 211 can be discharged into the chip discharge groove 22 through the front tool surface 213, so that chips can be smoothly discharged, and the problem that a large amount of chips are accumulated on the front tool surface 213 to affect the drilling of the workpiece by the first cutting edge 211 is avoided, thereby improving the quality of the drilling of the workpiece by the first cutting edge 211.

In one embodiment, the rake face 213 forms a rake angle with respect to the axial direction of the tool body 20 of the first cutting edge 211, the relief angle of the first cutting edge 211 is a relief angle of the relief face 214 with respect to the workpiece of the first cutting edge 211, the rake angle of the first cutting edge 211 ranges from 10 degrees to 30 degrees, and the relief angle of the first cutting edge 211 ranges from 5 degrees to 10 degrees.

Further, in the present embodiment, the rotation direction of the tool body 20 during operation is opposite to the direction from the rake surface 213 to the flank surface 214.

In one embodiment, referring to fig. 1 and 2, each cutting portion 21 further includes a land 215 for guiding the drilling of the first cutting edge 211. The land 215 deviates from the chip groove 22, the land 215 is connected with the front tool surface 213 and the rear tool surface 214, the land 215 intersects with the front tool surface 213 to form a second cutting edge 212, chips generated after the workpiece is milled by the second cutting edge 212 can be discharged into the chip groove 22 through the front tool surface 213, so that the chips can be smoothly discharged, the problem that the chips are accumulated on the front tool surface 213 in a large amount to influence the milling of the second cutting edge 212 on the workpiece is avoided, and the milling quality of the workpiece by the second cutting edge 212 is improved. Further, each cutting portion 21 further includes a land 216, the land 216 is connected to the land 215, and the land 216 is slidably engaged with the workpiece to reduce resistance of the first cutting edge 211 and the second cutting edge 212 to cutting of the workpiece.

In one embodiment, the helical extension direction of the second cutting edge 212 and the axial direction of the tool body 20 form a helix angle of the second cutting edge 212, and the helix angle of the second cutting edge 212 is in an angular range of 10 degrees to 20 degrees.

Further, in the present embodiment, the sizes of the helix angle and the relief angle are selected within the preset range, so that the vibration amount of the tool body 20 during drilling and milling of the workpiece can be effectively reduced, and the machining precision of the workpiece is higher.

In an embodiment, referring to fig. 1 and fig. 4, one end of the plurality of cutting portions 21 on the tool body 20 away from the tool holder 10 is converged into a whole, and a drill tip 24 protruding outward along the axial direction of the tool body 20 is formed, and the drill tip 24 can perform positioning drilling on the workpiece along the axial direction of the tool body 20, so that the tool body 20 can be accurately positioned on the surface of the workpiece without wobbling; further, in the present embodiment, the two cutting portions 21 meet together at one end of the tool body 20 away from the tool holder 10 to form a drill tip 24 protruding outward in the axial direction of the tool body 20, the drill tip 24 has a chisel edge 241 thereon, the chisel edge 241 is used for connecting the two cutting portions 21, and the chisel edge 241 can perform positioning drilling on the workpiece in the axial direction of the tool body 20.

In one embodiment, referring to fig. 1, one end of the chip groove 22 is located on the tool shank 10, and the other end of the chip groove 22 extends spirally toward the first cutting edge 211 along the axial direction of the tool body 20.

In one embodiment, the tool holder 10 is cylindrical, the tool holder 10 is used for connecting an external driving device, and the driving device can drive the tool body 20 to rotate along the axial direction of the tool holder 10, so as to drill and mill a workpiece to be machined.

The utility model provides a compound tool's application method as follows: referring to fig. 1 to 4, the tool holder 10 is externally connected with a driving device, the driving device drives the tool body 20 to rotate along the axial direction of the tool body through the tool holder 10 and advance towards a workpiece to be machined, the workpiece is drilled through the first cutting edge 211 of the cutting portion 21, and after the drilling operation is completed, the tool body 20 can be moved along the radial direction of the tool body 20, so that the workpiece is milled through the second cutting edge 212 of the cutting portion 21 without replacing the tool, and the secondary machining precision problem caused by frequent tool changing can be avoided through the drilling and milling composite tool, and the machining efficiency is improved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A composite cutter comprises a cutter handle and a cutter body connected with the cutter handle, and is characterized in that,

the tool body is provided with a plurality of cutting parts spirally extending along the axial direction of the tool body, and a chip removal groove for removing chips generated after the tool body drills and mills a workpiece is formed between every two adjacent cutting parts;

2. The compound tool as in claim 1, wherein the first cutting edge and the second cutting edge are each in line contact with the workpiece to effect drilling and milling, respectively, of the workpiece.

3. The compound tool of claim 1, wherein each cutting portion further comprises a rake face and a flank face that are connected, the rake face faces the flute arrangement, the flank face deviates from the flute arrangement, the rake face intersects with the flank face to form the first cutting edge, and chip breaking generated after the workpiece is drilled by the first cutting edge can be discharged into the flute via the rake face.

4. The composite tool as set forth in claim 3, wherein the rake face forms a rake angle of the first cutting edge with the axial direction of the tool body, and the relief face forms a relief angle of the first cutting edge with the workpiece, the rake angle ranging from 10 degrees to 30 degrees, and the relief angle ranging from 5 degrees to 10 degrees.

5. The composite tool as set forth in claim 3, wherein each of said cutting portions further comprises a land for guiding drilling of said first cutting edge, said land being disposed away from said flute, said land connecting to both said rake surface and said relief surface, said land intersecting said rake surface to form said second cutting edge, said second cutting edge being adapted to remove chips generated by milling of said workpiece into said flute through said rake surface.

6. The composite tool as recited in claim 5, wherein a helix angle of the second cutting edge is formed between a direction of helical extension of the second cutting edge and an axial direction of the tool body, the helix angle being in an angular range of 10 degrees to 20 degrees.

7. The composite tool as set forth in claim 1, wherein a plurality of the cutting portions are integrally joined at an end of the tool body remote from the shank, and form a drill tip projecting outward in an axial direction of the tool body, the drill tip being capable of performing positioning drilling of the workpiece in the axial direction of the tool body.

8. The compound tool as defined in claim 1, wherein one end of the flute is located on the shank and the other end of the flute extends helically in an axial direction of the tool body toward the first cutting edge.

9. The composite tool of claim 1, wherein the tool body is made of cemented carbide material.

10. The compound tool according to claim 1, wherein the tool shank is externally connected to a driving device, and the driving device can drive the tool body to rotate around the axial direction of the tool shank, so as to drill and mill a workpiece to be machined.