CN210937333U - Large feed milling insert - Google Patents

Abstract

The utility model provides a large-feed milling blade, including the blade body, its middle part is provided with the through-hole, circumference sets up many convex main cutting edges, through knife tip circular arc transitional coupling between two adjacent main cutting edges, set up vice chamfer on the main cutting edge, vice chamfer extends the plane formation rake face that is connected to through-hole circumference, main cutting edge and knife tip circular arc form the main cutting edge back angle face and the knife tip circular arc back angle face of blade body periphery respectively downwards along a relief angle, encircle the chip groove that is provided with a plurality of indents all around of through-hole, connect through a plurality of bits platform of book between through-hole and the chip groove, the groove width of chip groove is the gradual change. The utility model discloses optimize the chip removal ability of blade, improved the cutting stability and the life of blade in cutting process.

Description

Large feed milling insert

Technical Field

The utility model relates to a metal cutting tool technical field, in particular to big feed milling blade.

Background

In industrial production, a great degree of removal of metal material is often required, and fast feed indexable milling inserts are a poor choice for this process by using their chip-reducing principle. Since the cutting edge of the insert is subjected to a large impact load for each cut of the work material, the rational design of the insert has a significant effect on its cutting performance.

In the prior art, the slot-type structure forms for the large-feed milling insert are mainly two types: one is flat without grooves; the other is that the width of the groove is basically fixed, and no obvious difference exists between the left side and the right side in a top view. However, the above two groove-type structures have certain defects, and when the insert in the first groove-type structure is machined, a large amount of cutting heat is generated by the direct flow of chips from the front surface, so that the performance and the service life of the insert are reduced; the second groove structure is disadvantageous in cutting stability because chips fly around during machining.

SUMMERY OF THE UTILITY MODEL

The utility model provides a large-feed milling blade, its purpose is in order to solve the current unstable problem of flow and discharge of smear metal when processing of milling blade.

In order to achieve the purpose, the utility model provides a large-feed milling blade, including the blade body, the middle part of blade body is provided with the through-hole, and circumference sets up many convex main cutting edges, adjacent two through knife tip circular arc transitional coupling between the main cutting edge, set up vice chamfer on the main cutting edge, vice chamfer extend to be connected to the plane of through-hole circumference forms the rake face, the main cutting edge and the knife tip circular arc forms the main cutting edge back angle face and the knife tip circular arc back angle face of blade body periphery respectively downwards along certain relief angle, encircle the chip groove that is provided with a plurality of indents all around of through-hole, the through-hole with connect through a plurality of bits platform of book between the chip groove, the groove width of chip groove is the gradual change.

Further, the chip forming table is arranged in a mode of high-low phase distribution.

Furthermore, the width of the secondary chamfer is 0.1-0.3mm, and the angle is 5-25 degrees.

Furthermore, a positioning surface is further arranged on the rear angle surface of the main cutting edge.

Furthermore, the scrap rolling table is also provided with an identification point.

The above technical scheme of the utility model has following beneficial effect:

the utility model discloses design into a structure that opens gradually with the chip groove on the rake face, this kind of flute type structure makes this cutting blade add man-hour, and the smear metal can flow along the chip groove regularly to be discharged smoothly after being cut off by the chip rolling platform, therefore optimized the chip removal ability of blade, improved the cutting stability of blade in cutting process, and life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is an installation diagram of the present invention.

[ description of reference ]

1-a blade body; 2-a through hole; 3-a main cutting edge; 4-arc of the tool nose; 5-secondary chamfering; 6-a rake face; 7-main cutting edge relief face; 8-the tool nose arc back angle surface; 9-chip flutes; 10-a chip rolling table; 11-a positioning surface; 12-identify points.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the embodiment of the present invention provides a large-feed milling insert, which comprises an insert body 1, wherein a through hole 2 is formed in the middle of the insert body for installing the insert. A plurality of arc-shaped main cutting edges 3 are arranged in the circumferential direction of the blade body 1, and two adjacent main cutting edges 3 are in transitional connection through a tool nose arc 4 to form a continuous cutting line. A secondary chamfer 5 is provided on the main cutting edge 3, the secondary chamfer 5 extending to a plane in the circumferential direction of the through hole 2 forming a rake surface 6 on the insert body 1, the rake surface 6 being a surface through which the main chips flow. The main cutting edge 3 and the tool nose arc 4 form a main cutting edge rear angle surface 7 and a tool nose arc rear angle surface 8 on the periphery of the blade body 1 respectively along a certain rear angle downwards.

Meanwhile, the periphery of the through hole 2 is surrounded by a plurality of concave chip containing grooves 9, the through hole 2 is connected with the chip containing grooves 9 through a plurality of chip rolling tables 10, the chip containing grooves 9 and the chip rolling tables 10 are arranged on the front tool face 6, the chip containing grooves 9 are used for guiding chips, the groove width of the chips is gradually changed, and the chip rolling tables 10 are used for cutting off chip flow, so that the accumulated chips can smoothly leave the blade body 1. In fig. 2, it can be seen that the distance from the point P1 on the main cutting edge 3 to the point P1 'on the chip forming table 10 is smaller than the distance from the point P2 on the main cutting edge 3 to the point P2' on the chip forming table 10, i.e. the groove width of the chip pocket 9 is progressively larger from left to right in this embodiment. The chips thus naturally flow along the distribution of the chip flutes 9 and are discharged after chip breaking, the forces to which the insert is subjected being more stable overall and thus positively influencing the cutting performance.

Further, the chip winding tables 10 are arranged in a mode of high-low distribution, so that fault layers similar to steps are formed among the chip winding tables 1, and the chip winding tables 10 are more beneficial to the cutting-off effect of the chips during cutting of the blade.

Further, the width of the secondary chamfer 5 is 0.1-0.3mm, the angle is 5-25 degrees, the secondary chamfer 5 can bear most of heat for the main cutting edge 3 in the cutting process, so that the main cutting edge 3 and the rake face 6 cannot be excessively abraded, and the service life of the blade is prolonged.

Further, a positioning surface 11 is provided on the main cutting edge relief surface 7 for positioning when mounting the insert on a milling machine or the like, the mounting of which is schematically shown in fig. 3.

Furthermore, the scrap rolling table 10 is also provided with an identification point 12 which mainly plays a role of marking and improves the use convenience.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides a large-feed milling blade, a serial communication port, includes the blade body, the middle part of blade body is provided with the through-hole, and circumference sets up many convex main cutting edges, adjacent two through knife tip circular arc transitional coupling between the main cutting edge, set up vice chamfer on the main cutting edge, vice chamfer extend to be connected to the plane of through-hole circumference forms the rake face, the main cutting edge and the knife tip circular arc forms the main cutting edge back angle face and the knife tip circular arc back angle face of blade body periphery respectively downwards along a relief angle, encircle the chip groove that is provided with a plurality of indents all around of through-hole, the through-hole with connect through a plurality of bits of book platform between the chip groove, the groove width of chip groove is the gradual change.

2. The macro-feed milling insert according to claim 1, wherein said chip forming tables are arranged in a high-low phase distribution.

3. The macro-feed milling insert according to claim 1, wherein the width of the secondary chamfer is 0.1-0.3mm and the angle is 5 ° -25 °.

4. The macro-feed milling insert according to claim 1, wherein the main cutting edge relief surface is further provided with a locating surface thereon.

5. The macro-feed milling insert according to claim 1, wherein the chip forming table is further provided with an identification point thereon.

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