CN221289642U - Milling blade with trimming edge - Google Patents

Abstract

The utility model discloses a milling blade with a trimming edge, which comprises a polygonal blade body; the upper surface and the side are connected to form a main cutting edge, a transition circular arc cutting edge and a trimming edge, the transition circular arc cutting edge, the trimming edge and the transition circular arc cutting edge which are sequentially connected are arranged between two adjacent main cutting edges, the main cutting edge and the trimming edge are straight and have uniform width, and meanwhile, the width of the main cutting edge is larger than that of the trimming edge. The width of the trimming blade is set to be smaller than the width of the main cutting edge, so that the cutting resistance of the trimming blade during machining is reduced, the trimming effect is improved, the vibration of the cutting blade is reduced, the surface machining quality of a workpiece is improved, the vibration and the collapse of the cutting blade caused by uneven resistance of the trimming blade during machining are avoided by uniformly setting the width of the trimming blade, the service life of the cutter is effectively prolonged while the surface machining quality of the workpiece is improved, and the economical efficiency of the cutting blade is improved.

Description

Milling blade with trimming edge

Technical Field

The utility model relates to the technical field of milling tools, in particular to a milling blade with a wiper.

Background

With the high-speed development of the metal processing industry, the requirements on the economy and the performance of the cutter are continuously improved. At present, the requirements of the manufacturing industry on the machining precision are continuously improved, and the dimensional precision of the machined surface and the surface quality of the machined surface are increasingly important. The milling blade with the polishing edge is used as a milling and polishing integrated blade, and can achieve the effect of greatly improving the surface quality of a machined surface while milling. The milling blade with the trimming blade works more efficiently than the milling blade which is used for trimming after being solely used for milling, thereby saving the time for replacing the blade and simultaneously saving the cost of the blade. For the milling blade with the polishing edge, the milling blade has high economical efficiency and excellent processing quality, and is the greatest competitive force.

In order to facilitate processing and manufacturing, most of the trimming edges of the existing milling blades are as wide as the main cutting edge width, and the processing resistance is large when the large trimming edge width is designed and processed, so that the cutter is easy to vibrate, and the trimming effect is poor. The trimming blade width of the blade is gradually widened along one direction, and the trimming blade of the blade is designed in a straight line or a large arc curve, so that the trimming blade of the blade is uneven in machining resistance during machining, and tool vibration and unnecessary collapse are easily caused.

In a milling insert and a cutting tool with a wiper edge, for example, the grant publication No. cn201811420276.X, a wiper edge with an inverted V is disclosed, and the wiper edge widens gradually in one direction. As described above, the wiper edge of such a blade is uneven in machining resistance during machining, and is liable to cause vibration of the tool and unnecessary chipping.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide the milling blade with the trimming blade, which can reduce the cutting resistance of the trimming blade during processing, reduce the vibration of a cutter, improve the processing surface quality of a workpiece and have higher economical efficiency.

In order to solve the technical problems, the utility model provides a milling blade with a trimming edge, which comprises a polygonal blade body; the blade body has an upper surface, a lower surface, a side surface and a central aperture; the side is connected upper surface and lower surface, the centre bore link up the blade body and is connected with upper surface and lower surface, upper surface and side are connected and are formed the cutting edge, the cutting edge includes main cutting edge, transition circular arc cutting edge and coping sword, is equipped with the transition circular arc cutting edge, coping sword, the transition circular arc cutting edge that link to each other in proper order between the two adjacent main cutting edges for corresponding side contains main side, circular arc side and coping side, the main cutting edge with the coping sword is sharp and width even, and main cutting edge width is greater than coping sword width simultaneously.

As a preference to some embodiments of the utility model, the blade body may be regular triangle, rectangle, diamond, regular pentagon or regular hexagon.

As some embodiments of the utility model, the transition circular cutting edge is tangential to the main cutting edge and not tangential to the wiper edge.

As some embodiments of the utility model, the main side surface and the lower surface normal angle α1 is 5 ° to 15 °, preferably 7 °.

As some embodiments of the utility model, the angle alpha 2 between the polishing side and the normal direction of the lower surface is 5-15 degrees, preferably 7 degrees.

As some embodiments of the present utility model, the main cutting edge width W1 is 0.1mm to 0.4mm, preferably 0.25mm.

As some embodiments of the utility model, the width W2 of the wiper is less than or equal to 0.3mm, preferably 0.1mm.

As some embodiments of the present utility model, the angle β1 formed by the tangent line at the end point of the transition arc cutting edge and the wiper edge is 15 ° to 35 °, preferably 25 °.

Compared with the prior art, the utility model has the beneficial effects that: the width of the trimming blade is set to be smaller than the width of the main cutting edge, so that the cutting resistance of the trimming blade during machining is reduced, the trimming effect is improved, the vibration of the cutting blade is reduced, the surface machining quality of a workpiece is improved, the vibration and the collapse of the cutting blade caused by uneven resistance of the trimming blade during machining are avoided by uniformly setting the width of the trimming blade, the service life of the cutter is effectively prolonged while the surface machining quality of the workpiece is improved, and the economical efficiency of the cutting blade is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the description of the embodiments or the prior art will be briefly described, and it is apparent that the drawings in the following description are only one embodiment of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a cutting insert according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of a cutting insert according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 2 in accordance with the present utility model;

fig. 4 is an enlarged schematic view of section B of fig. 2 in accordance with the present utility model.

The marks in the drawings are: 1. a blade body; 2. an upper surface; 3. a lower surface; 4. a side surface; 4a, a main side surface; 4b, arc side surfaces; 4c, polishing the side surface; 5. a central bore; 6. a cutting edge; 6a, main cutting edge; 6b, a transitional arc cutting edge; 6c, a trimming blade.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand, the technical solutions in the embodiments of the present utility model are clearly and completely described below to further illustrate the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all versions.

The present embodiment is a milling insert with a wiper, which includes a regular quadrilateral insert body 1, and of course, the insert body 1 may also be in a common shape of other milling inserts such as regular triangles, where the regular quadrilateral is used only for showing an embodiment of the present utility model more clearly and not limiting the scope of the present utility model; the blade body 1 has an upper surface 2, a lower surface 3, sides 4 and a central hole 5; the side surface 4 is connected with the upper surface 2 and the lower surface 3, the center hole 5 penetrates through the blade body 1 and is connected with the upper surface 2 and the lower surface 3, the upper surface 2 and the side surface 4 are connected to form a cutting edge 6, the cutting edge 6 comprises a main cutting edge 6a, a transition circular arc cutting edge 6b and a trimming edge 6c, a transition circular arc cutting edge 6b, a trimming edge 6c and a transition circular arc cutting edge 6b which are sequentially connected are arranged between two adjacent main cutting edges 6a, the corresponding side surface 4 comprises a main side surface 4a, a circular arc side surface 4b and a trimming side surface 4c, the main cutting edge 6a and the trimming edge 6c are in a straight line and have uniform width, and meanwhile, the width of the main cutting edge 6a is larger than that of the trimming edge 6 c.

Wherein the transition arc cutting edge 6b is tangential to the main cutting edge 6a and is not tangential to the wiper edge 6 c;

the normal included angle alpha 1 between the main side surface 4a and the lower surface 3 is 7 degrees;

the normal included angle alpha 2 between the polishing side surface 4c and the lower surface 3 is 7 degrees;

the width W1 of the main cutting edge 6a is 0.25mm;

the width W2 of the trimming blade 6c is 0.1mm;

The included angle beta 1 formed by the tangent line between the transition arc cutting edge 6b and the end point of the trimming edge 6c and the trimming edge 6c is 25 degrees.

Having described the main technical features and fundamental principles of the present utility model and related advantages, it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The above detailed description is, therefore, to be taken in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments in terms of various embodiments, not every embodiment is described in terms of a single embodiment, but rather that the descriptions of embodiments are merely provided for clarity, and that the descriptions of embodiments in terms of various embodiments are provided for persons skilled in the art on the basis of the description.

Claims (8)

1. Milling insert with a wiper edge, comprising an insert body (1) having a polygonal shape; the blade body (1) has an upper surface (2), a lower surface (3), sides (4) and a central hole (5); the utility model provides a cutting edge, including cutting edge (6 a), transition circular arc cutting edge (6 b), trimming edge (6 c), be equipped with transition circular arc cutting edge (6 b), trimming edge (6 b), transition circular arc cutting edge (6 b) that link to each other in proper order between two adjacent main cutting edges (6 a) for side (4) that correspond contain main side (4 a), circular arc side (4 b) and trimming side (4 c), its characterized in that, main cutting edge (6 a) with trimming edge (6 c) are sharp and width is even, and main cutting edge (6 a) width is greater than trimming edge (6 c) width simultaneously.

2. A milling insert with a wiper edge according to claim 1, characterized in that the insert body (1) may be regular triangle, rectangle, diamond, regular pentagon or regular hexagon.

3. A milling insert with a wiper edge according to claim 1, characterized in that the transition circular cutting edge (6 b) is tangential to the main cutting edge (6 a) and not to the wiper edge (6 c).

4. A wiper-edge milling insert according to claim 1, characterized in that the major side surface (4 a) is at an angle α1 normal to the lower surface (3) of 5 ° to 15 °.

5. A milling insert with a wiper edge according to claim 1, characterized in that the wiper side (4 c) has an angle α2 normal to the lower surface (3) of 5 ° to 15 °.

6. A milling insert with a wiper edge according to claim 1, characterized in that the main cutting edge (6 a) has a width W1 of 0.1-0.4 mm.

7. A milling insert with a wiper according to claim 1, characterized in that the wiper edge (6 c) has a width W2 +.0.3 mm.

8. A milling insert with a wiper edge according to claim 3, characterized in that the angle β1 formed by the tangent to the wiper edge (6 c) at the end point of the transition circular cutting edge (6 b) and the wiper edge (6 c) is 15 ° to 35 °.