CN216226956U

CN216226956U - Inner hole boring cutter blade

Info

Publication number: CN216226956U
Application number: CN202122932237.1U
Authority: CN
Inventors: 白淼
Original assignee: Wuxi Ruizhi Fangda Metal Technology Development Co ltd
Current assignee: Wuxi Ruizhi Fangda Metal Technology Development Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-08
Anticipated expiration: 2031-11-26

Abstract

The utility model belongs to the technical field of metal inner hole machining blades, and particularly relates to an inner hole boring cutter blade which comprises a blade body, wherein a mounting hole is formed in the center of the blade body, the blade body comprises an upper surface, a lower surface and four side surfaces, the upper surface and the lower surface are oppositely arranged, the four side surfaces are connected with the upper surface and the lower surface, the radial cross section of the blade body along the mounting hole is in a diamond shape, corner surfaces are arranged at acute angles at two ends of the diamond shape, the corner surfaces are connected to form side surfaces at two sides of an acute angle, and the upper side end surfaces of the acute angles at the two ends of the diamond shape form a cutting unit respectively. The inner hole boring cutter blade has the advantages of good smoothness, sharp cutting edge, smooth chip removal, extremely high wear resistance and strong deformation resistance. Under the same cutting condition, the cutter is not stuck, the efficiency is high and the precision is high.

Description

Inner hole boring cutter blade

Technical Field

The utility model belongs to the technical field of metal inner hole machining blades, and particularly relates to an inner hole boring cutter blade.

Background

The boring cutter is one of boring cutters, and the most common occasions are inner hole machining, hole expanding, profiling and the like of the boring cutter. Tools with one or two cutting parts, specially adapted for roughing, semi-finishing or finishing existing holes. The boring tool may be used on a boring machine, a lathe or a milling machine. The existing inner hole boring cutter blade has poor stability and is easy to deform, and high-feed processing is not facilitated.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a bore boring cutter insert which is excellent in impact resistance and can achieve high feed machining.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an inner hole boring cutter blade, includes the blade body, and blade body center is provided with the mounting hole, and the blade body is including relative upper surface and the lower surface that sets up and connect four side surfaces of upper surface and lower surface, and the radial cross section of blade body along the mounting hole is the rhombus, and the acute angle department in rhombus both ends sets up the turning face, and the both sides side surface that forms the acute angle is connected to the turning face, and the upside terminal surface of rhombus both ends acute angle forms a cutting element respectively.

Further, the diamond acute angle is 55 °.

Further, the cutting unit comprises a linear cutting edge and an arc-shaped cutting edge, wherein the intersection part of the side surface of the two sides forming the acute angle and the upper surface forms the linear cutting edge, and the intersection part of the corner surface and the upper surface forms the arc-shaped cutting edge.

Further, the upper surface corresponding to the cutting unit is a rake surface inclined at a predetermined angle toward the center of the insert.

Further, the rake face is provided with a chip groove.

Further, the rake face extends towards the upper surface middle portion through a first transition face and a second transition face, the first transition face inclining downwards and the second transition face inclining upwards in the direction from the rake face to the upper surface middle portion.

Further, the lower surface is provided with a clearance groove.

The utility model has the beneficial effects that: the inner hole boring cutter blade has the advantages of good smoothness, sharp cutting edge, smooth chip removal, extremely high wear resistance and strong deformation resistance. Under the same cutting condition, the cutter is not stuck, the efficiency is high and the precision is high.

Drawings

FIG. 1 is a side view of an inner bore boring cutter insert;

FIG. 2 is an elevation view of the bore boring blade;

FIG. 3 is a side view of an inner bore boring cutter insert;

FIG. 4 is a bottom view of the bore boring cutter insert;

FIG. 5 is a back view of an inner bore boring cutter insert;

FIG. 6 is a cross-sectional view of an inner bore boring cutter insert;

in the figure: 1. mounting hole, 2, upper surface, 3, side surface, 4, corner face, 5, straight line cutting edge, 6, arc cutting edge, 7, rake face, 8, chip groove, 9, first transition face, 10, second transition face, 11, clearance groove.

Detailed Description

In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.

Referring to the attached drawings 1-6, the inner hole boring cutter blade comprises a blade body, wherein a mounting hole 1 is formed in the center of the blade body, the blade body comprises an upper surface 2 and a lower surface which are oppositely arranged, and four side surfaces 3 which are connected with the upper surface and the lower surface, the radial cross section of the blade body along the mounting hole is in a diamond shape, corner surfaces 4 are arranged at acute angles at two ends of the diamond shape, the corner surfaces 4 are connected to form side surfaces at two sides of an acute angle, and the upper side end surfaces of the acute angles at the two ends of the diamond shape respectively form a cutting unit.

The side surface of the bore boring cutter insert is used as a positioning surface when the insert is cut, and the side surface functioning as the positioning surface is different when different cutting edges are used.

Further, the diamond acute angle is 55 °.

Further, the cutting unit includes a straight cutting edge 5 and an arc-shaped cutting edge 6, and a portion where both side surfaces forming an acute angle meet the upper surface forms the straight cutting edge 5, and a portion where a corner surface meets the upper surface forms the arc-shaped cutting edge 6.

Based on above-mentioned technical scheme, because the rhombus acute angle is 55, is less than the sword closed angle of boring cutter commonly used, the crest line department intensity of sword closed angle can't be guaranteed, consequently sets up the corner face, and the corner face can be effectively the intensity and the steadiness of both sides straight line cutting edge, and the wear resistance of reinforcing cutting edge has effectively improved the life of blade.

Further, the upper surface corresponding to the cutting unit is a rake surface 7 inclined at a predetermined angle toward the center of the insert.

Further, the rake face 7 is provided with chip flutes 8.

Further, the rake face extends towards the middle of the upper surface by a first transition surface 9 and a second transition surface 10, the first transition surface 9 being inclined downwards and the second transition surface 10 being inclined upwards in the direction from the rake face 7 to the middle of the upper surface.

Based on the technical scheme, the middle parts of the front tool face 7 and the upper surface are protruded, and due to the existence of the inclination angles of the front tool face 7, the first transition surface 9 and the second transition surface 10, two corresponding grooves are formed at the parts of the two cutting units close to the diamond milling blade, so that chip removal and heat dissipation are facilitated.

Further, the lower surface is provided with a clearance groove 11. It should be noted that the clearance groove 11 not only has a clearance function, but also can provide positioning accuracy when the inner hole boring cutter blade is installed.

The inner hole boring cutter blade has the advantages of good smoothness, sharp cutting edge, smooth chip removal, extremely high wear resistance and strong deformation resistance. Under the same cutting condition, the cutter is not stuck, the efficiency is high and the precision is high.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "lower", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above list is only the preferred embodiment of the present invention. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.

Claims

1. An inner bore boring cutter blade, characterized in that: including the blade body, blade body center is provided with the mounting hole, and the blade body is including relative upper surface and the lower surface that sets up and connect four side surfaces of upper surface and lower surface, and the radial cross section of blade body along the mounting hole is the rhombus, and the acute angle department in rhombus both ends sets up the turning face, and the both sides side surface that forms the acute angle is connected to the turning face, and the upside terminal surface of rhombus both ends acute angle forms a cutting element respectively.

2. A bore boring cutter insert as claimed in claim 1, wherein: the acute angle of the diamond is 55 degrees.

3. A bore boring cutter insert as claimed in claim 1, wherein: the cutting unit comprises a linear cutting edge and an arc-shaped cutting edge, the intersection part of the side surface of the two sides forming an acute angle and the upper surface forms the linear cutting edge, and the intersection part of the corner surface and the upper surface forms the arc-shaped cutting edge.

4. A bore boring cutter insert as claimed in claim 1, wherein: the upper surface corresponding to the cutting unit is a rake surface which is inclined to the center of the insert at a predetermined angle.

5. The bore boring cutter insert as set forth in claim 4, wherein: the rake face is provided with a chip groove.

6. The bore boring cutter insert as set forth in claim 4, wherein: the rake face extends towards the middle of the upper surface through a first transition face and a second transition face, and the first transition face inclines downwards and the second transition face inclines upwards along the direction from the rake face to the middle of the upper surface.

7. A bore boring cutter insert as claimed in claim 1, wherein: the lower surface is provided with a clearance groove.