CN209157251U - Chamfering cutters and machine tools - Google Patents

Abstract

A kind of angle cutting tool and lathe, the angle cutting tool includes the cutter head of knife handle with the end for being connected to the knife handle, the cutter head includes the cone that the end of the cutter head is arranged in, and the conical surface of the cone is equipped with the cutting edge that several length directions along the cutter head extend spirally.The cutting edge of a plurality of spiral extension is arranged by the conical surface of the cone in cutter head for above-mentioned angle cutting tool and lathe, so that the cutting edge of angle cutting tool can share cutting stress during the cutting process, effectively improves the wearability of angle cutting tool.

Description

Chamfering cutters and machine tools

technical field

The utility model belongs to the field of cutting tools, in particular to a chamfering milling cutter and a machine tool.

Background technique

The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

Milling cutters are used for milling operations and are installed on milling machines to machine planes, steps, grooves, forming surfaces and cutting workpieces. In the cutting process of the existing forming chamfering milling cutter, the cutting edge part of the chamfering is used for cutting according to a constant feed and rotation speed. When machining materials with high hardness, high toughness and low thermal conductivity, the cutting edge of the tool is easy to wear and chip.

Utility model content

In view of the above, it is necessary to provide a chamfering milling cutter and a machine tool to improve the problem that the chamfering milling cutter is easy to wear during cutting.

A chamfering milling cutter comprises a handle and a cutter head connected to the end of the cutter head, the cutter head comprises a cone arranged at the end of the cutter head, and the tapered surface of the cone is provided with There are a number of cutting edges extending helically along the length of the tip.

Preferably, the number of the cutting edges is five.

Preferably, a groove body is provided between the ends of the adjacent cutting edges.

Preferably, the groove body is a circular arc groove.

Preferably, the radius of the arc groove is 0.05mm˜0.07mm.

Preferably, the helix angle of the cutting edge is 19°˜21°.

Preferably, the helix angle of the cutting edge is 20°.

Preferably, the rake angle at the largest edge diameter of the cutting edge is 17°˜19°.

Preferably, the rake angle at the largest edge diameter of the cutting edge is 18°.

A machine tool includes the above-mentioned chamfering milling cutter.

Compared with the prior art, the above-mentioned chamfering milling cutter and machine tool set a plurality of helically extending cutting edges on the tapered surface of the cone of the cutter head, so that the cutting edges of the chamfering milling cutter can share the cutting edge during the cutting process. Force, effectively improve the wear resistance of the chamfering milling cutter.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a chamfering milling cutter in an embodiment.

Figure 2 is a schematic diagram of the structure of the cutter head.

FIG. 3 is a schematic structural diagram of a cross-section at the maximum edge diameter of the cutting edge.

FIG. 4 is a schematic view of the structure of the groove body at the end of the cutting edge.

Description of main component symbols

handle 10 cutter head 20 cone twenty one Cutting edge twenty two tank twenty three chip flute twenty four

The following specific embodiments will further illustrate the present invention with reference to the above drawings.

Detailed ways

In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features of the embodiments may be combined with each other unless there is conflict. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

In the various embodiments of the present invention, in order to facilitate the description rather than limit the present invention, the term "connection" used in the description of the patent application and the claims of the present invention is not limited to physical or mechanical connections, but may Includes electrical connections, whether direct or indirect. "Up", "Down", "Down", "Left", "Right", etc. are only used to indicate the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

FIG. 1 is a schematic structural diagram of a chamfering milling cutter in an embodiment. As shown in FIG. 1 , the chamfering milling cutter includes a tool holder 10 and a tool head 20 .

The handle 10 is substantially cylindrical, and one end of the handle 10 is connected to the cutter head 20 . In this embodiment, the diameter of the tool handle 10 is larger than the diameter of the tool head 20 , and one end of the tool handle 10 is connected to the tool head 20 . In use, the shank 10 of the chamfering cutter is mounted on the cutter head of the machine tool, and the cutter head 20 is used to process the workpiece.

FIG. 2 is a schematic structural diagram of the cutter head 20 . As shown in FIG. 2 , the cutter head 20 includes a cone 21 and a cutting edge 22 . One end of the cutter head 20 is connected with the handle 10 , and the other end is connected with the cone 21 , and the small end of the cone 21 protrudes outward. In this embodiment, the vertebral body 21 is a cone, and the cutting edge 22 is disposed on the circular arc-shaped conical surface of the cone 21 and extends from the large end to the small end along the length direction of the cutter head 20 . Spiral extension. The number of the cutting edges 22 may be multiple, such as 2, 3, 4, 6, etc. In this embodiment, the number of the cutting edges 22 is 5, which extend parallel to each other along the length direction of the cutter head 20 spirally, And a chip pocket 24 is formed between two adjacent cutting edges 22 . The helix angle of the cutting edge 22 is 19°˜21°, preferably 20°. During the machining process, the inventor found that the cutting edge 22 with the above-mentioned helical angle has less line grinding and larger point grinding during the cutting process, so that the grinding cutting strength of the milling cutter can be improved.

FIG. 3 is a schematic structural diagram of a cross section of the cutting edge 22 at the maximum blade diameter. As shown in FIG. 3 , the largest edge diameter of the cutting edge 22 is located at the large end of the cone 21 of the cutter head 20 . The rake angle at the maximum blade diameter of the cutting edge 22 is 17° to 19°, preferably 18°, so that the end of the cutting edge 22 close to the small end of the cone 21 can be provided with a groove body 23 of a certain size, Thereby, the cutting force of the front end of the tool can be increased, and the life of the tool can be increased.

FIG. 4 is a schematic structural diagram of the groove body 23 at the end of the cutting edge 22 . As shown in FIG. 4 , a groove body 23 is formed between the ends of the adjacent cutting edges 22 . In this way, the chips generated at the end of the cutting edge 22 during the cutting process can enter the chip pocket 24 through the groove body 23 and be discharged, which can prevent the chips from clogging and increase the cutting resistance and improve the ease of the end of the cutting edge 22. Collapse problem. In this embodiment, the groove body 23 is a circular arc groove, and the radius of the circular arc groove is 0.05 mm to 0.07 mm, preferably 0.06 mm. The chips generated by the cutting edge 22 are more easily discharged into the chip pocket 24 through the arc groove, thereby improving the chip removal capability of the tool, reducing the chip sticking effect, and increasing the service life of the tool.

This embodiment also relates to a machine tool, including the above-mentioned chamfering milling cutter. It should be noted that, within the scope of the spirit or basic features of the present invention, each specific solution in the embodiment applicable to the chamfering milling cutter can also be correspondingly applicable to the present embodiment, in order to save space and avoid repetition , and will not be repeated here.

The chamfering milling cutter and the machine tool provided by the above embodiments provide a plurality of helically extending cutting edges 22 on the tapered surface of the cone 21 of the cutter head 20, so that the cutting edges 22 of the chamfering milling cutter can be shared during the cutting process. The cutting force effectively improves the wear resistance of the chamfering cutter.

Moreover, the helix angle of the cutting edge 22 is set to be 19°˜21°, and the inventor found in the machining process that the cutting edge 22 with the above-mentioned helix angle has less line grinding and larger point grinding during the cutting process, so that it can improve the Grinding cutting strength of milling cutters.

Further, the chips generated at the end of the cutting edge 22 during the cutting process can be discharged into the chip pocket 24 through the groove body 23 at the end of the cutting edge 22, so as to prevent the clogging of the chips and increase the cutting resistance and improve the cutting edge. The end of 22 is prone to collapse.

In the several specific embodiments provided by the present invention, it should be understood that the disclosed components and structures may be implemented in other ways. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim. Furthermore, it is clear that the word "comprising" does not exclude other units or steps and the singular does not exclude the plural. Multiple units or means recited in the system claims can also be implemented by one and the same unit or means by means of software or hardware. The terms first, second, etc. are used to denote names and do not denote any particular order.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified. Or equivalent replacements should not depart from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. a kind of angle cutting tool, the cutter head including knife handle He the end for being connected to the knife handle, which is characterized in that the cutter head packet The cone that the end of the cutter head is set is included, the conical surface of the cone is equipped with several length direction spirals along the cutter head and prolongs The cutting edge stretched.

2. angle cutting tool as described in claim 1, which is characterized in that the quantity of the cutting edge is 5.

3. angle cutting tool as claimed in claim 2, which is characterized in that be equipped with slot between the end of the adjacent cutting edge Body.

4. angle cutting tool as claimed in claim 3, which is characterized in that the groove body is arc groove.

5. angle cutting tool as claimed in claim 4, which is characterized in that the radius of the arc groove is 0.05mm~0.07mm.

6. angle cutting tool as described in claim 1, which is characterized in that the helical angle of the cutting edge is 19 °~21 °.

7. angle cutting tool as claimed in claim 5, which is characterized in that the helical angle of the cutting edge is 20 °.

8. angle cutting tool as described in claim 1, which is characterized in that the anterior angle at the maximum sword diameter of the cutting edge is 17 ° ~19 °.

9. angle cutting tool as claimed in claim 8, which is characterized in that the anterior angle at the maximum sword diameter of the cutting edge is 18 °.

10. a kind of lathe, which is characterized in that including such as described in any item angle cutting tools of claim 1-9.