CN216227399U

CN216227399U - PCD maize thread milling cutter

Info

Publication number: CN216227399U
Application number: CN202122731176.2U
Authority: CN
Inventors: 王洪涛; 陈利锋
Original assignee: Changshu Wanke Precision Tools Co ltd
Current assignee: Changshu Wanke Precision Tools Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-08
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to a PCD corn thread milling cutter, which comprises an integrally formed cutter handle and a cutter head arranged at one end of the cutter handle, wherein 4 cutting edges are arranged on the cutter head, the 4 cutting edges are uniformly distributed on the periphery of the cutter head, each cutting edge comprises a plurality of blades, the blades in each cutting edge are distributed on the cutting rotating circumference in a staggered manner, the cutting tracks between the edges of the adjacent blades have an overlapped part, the edges of the blades are provided with a plurality of sawteeth, and the cutting tracks of the blades are in the same plane; the cutting edge of the milling cutter is optimally made into a PCD corn grain staggered form, the cutting resistance of a contact product per revolution is only 1/3, the original cutter needs to run for two circles and the cutting sound is harsh, the cutter can be machined once, no obvious cutting sound exists, in addition, the resistance is reduced during cutting due to the structure of the sawteeth, and the cut waste chips can flow out through gaps of the sawteeth, so that the inner wall is prevented from being scratched.

Description

PCD maize thread milling cutter

Technical Field

The utility model relates to the technical field of reamers, in particular to a PCD chip breaking reamer.

Background

The corn milling cutter is mainly used for milling contours and can meet the requirement of rapid machining. The plurality of blades are distributed on the cutter body and are similar to a corn shape. Chinese patent publication No. CN201820981082.6 discloses an integrally formed PCD corn milling cutter, which solves the problem of probability of cutter breakage of the milling cutter, but the original cutter has a large cutting resistance due to the horizontal end surface of the blade during cutting, and the sharp corner of the cutting edge is provided with a chamfer, but the original cutter is still easily broken when the cutting resistance is large, and the cutting sound is harsh, and the cut mixed chips often scratch the inner wall along with the cutting edge, so that the waste chips are not discharged well.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PCD corn thread milling cutter, which solves the problem of large resistance in cutting of the existing PCD corn milling cutter.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a PCD corn thread milling cutter, which comprises an integrally formed cutter handle and a cutter head arranged at one end of the cutter handle, wherein 4 cutting edges are arranged on the cutter head, the 4 cutting edges are uniformly distributed on the periphery of the cutter head, each cutting edge comprises a plurality of blades, the blades in each cutting edge are distributed on the cutting rotating circumference in a staggered mode, the cutting tracks between the edges of the adjacent blades are provided with an overlapped part, the edges of the blades are provided with a plurality of sawteeth, and the cutting tracks of the blades are in the same plane.

Preferably, the cross section of the sawtooth is trapezoidal, and the included angle between one of the waist lines of the trapezoidal shape and the horizontal straight line is 45 degrees.

Preferably, at least two chamfers are provided on the end faces of the serrations.

Preferably, the inserts at both ends of each cutting edge are spaced 38 ° -42 ° apart on the cutting rotation circumference.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the PCD corn thread milling cutter comprises a cutter handle and a cutter head, wherein the cutter handle is integrally formed, the cutter head is arranged at one end of the cutter handle, 4 cutting edges are arranged on the cutter head, the cutting edges are uniformly distributed on the peripheral surface of the cutter head, each cutting edge comprises a plurality of blades, each blade is distributed on the cutting rotating circumference in a staggered manner, the cutting tracks between the edges of the adjacent blades are provided with an overlapping part, the edges of the blades are provided with a plurality of sawteeth, the cutting tracks of the blades are parallel, the cutting edges of the milling cutter are optimally made into a PCD corn grain staggered form, the cutting resistance of a contact product in each rotation is only half or less than that of the original contact product, the original cutter needs to run for two circles and the cutting sound is harsh, the cutter can be processed in one step without obvious cutting sound, in addition, due to the structure of the sawteeth, the resistance in cutting is reduced, and the cut waste chips can flow out through gaps of the sawteeth, so that the inner wall is prevented from being scratched.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a front view of the structure of the preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the blade of the embodiment of FIG. 1;

fig. 3 is a perspective view of the embodiment of fig. 1 from the top of the cutter head.

Wherein the reference numerals are as follows:

1. a knife handle; 2. a cutter head; 3. a cutting edge; 4. a blade; 5. and (4) saw teeth.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 3, an embodiment of the present invention includes a tool holder 1 and a tool head 2 disposed at one end of the tool holder 1, the tool head 2 is provided with 4 cutting edges 3, the 4 cutting edges 3 are uniformly distributed around the tool head 2, each cutting edge 3 occupies a cutting range of 90 degrees, each cutting edge 3 includes a plurality of blades 4, the blades 4 are made of PCD (polycrystalline diamond), in this embodiment, each cutting edge 3 includes three blades, the three blades 4 in the cutting edge 3 are distributed in a staggered manner on a cutting rotation circumference, the blades 4 at two end portions in each cutting edge 3 are spaced apart by 40 ° on the cutting rotation circumference, in other technical solutions, the angle may be any angle (including 38 ° and 42 °) between 38 ° and 42 °, which is a design concept of a large helix angle, and may improve cutting efficiency and prolong a service life of the tool. The cutting trajectories between the edges of the adjacent blades 4 have overlapping portions as shown in fig. 2 (b is an overlapping portion); and the cutting track of each blade 4 is parallel, so that when in processing, a larger plane can be processed, the cutting position of the blade 4 in each cutting edge 3 is in one plane, the edge of the blade 4 is provided with a plurality of sawteeth 5, the arrangement of the sawteeth 5 reduces the cutting resistance, and the arrangement of the sawteeth 5 enables the edge of the blade 4 to be sharper. The waste chips cut off can be discharged from the gaps of the saw teeth 5, so that the inner wall of the product is prevented from being damaged.

The cross section of the sawtooth 5 is trapezoidal, and the included angle between one of the waist lines of the trapezoidal shape and the horizontal straight line is 45 degrees. The 45-degree arrangement generates larger radial cutting resistance to the workpiece, and the slender shaft part is easy to deform when being processed.

The 45-degree sharp corner of the cutter is large, the heat dissipation performance is good, the residual area of the surface of the workpiece is small, and the smoothness is high under the condition that the feed amount is the same.

The end face of each sawtooth 5 is provided with at least two chamfers, so that the capacity of bearing cutting resistance is stronger, and the probability of cutter breakage can be reduced.

During the specific use, handle of a knife 1 drives tool bit 2 and rotates, and tool bit 2 is when rotatory, and every cutting edge 3 all cuts along with when rotating, because 2 cutting tracks of blade of every cutting edge 3 have overlap portion, and the cutting track of every blade 4 is parallel, so once rotatory just can accomplish a plane processing, and the setting of sawtooth 5 makes the cutting force increase, and the resistance reduces, and the speed of processing is faster, and life is longer.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a PCD maize thread milling cutter, includes integrated into one piece's handle of a knife and sets up the tool bit in handle of a knife one end, its characterized in that, be provided with 4 cutting edges on the tool bit, 4 the cutting edge equipartition is in the periphery of tool bit, the cutting edge is including a plurality of blades, every a plurality of in the cutting edge the blade is on the rotatory circumference of cutting straggly to distribute, and the cutting orbit between the edge of a knife of the adjacent blade of middle part's cutting blade has overlap portion, the edge of a knife of blade is provided with a plurality of sawtooth, and the cutting orbit of every blade is in the coplanar.

2. A PCD corn thread milling cutter according to claim 1, characterised in that: the cross section of sawtooth is trapezoidal, the contained angle of one of them belt course of trapezoidal and horizontal straight line is 45 degrees.

3. A PCD corn thread milling cutter according to claim 1, characterised in that: at least two chamfers are arranged on the end faces of the sawteeth.

4. A PCD corn thread milling cutter according to claim 1, characterised in that: the inserts at the two ends of each cutting edge are spaced 38 DEG to 42 DEG apart on the cutting rotation circumference.