CN215509156U

CN215509156U - Milling cutter for pouring cup

Info

Publication number: CN215509156U
Application number: CN202121351104.9U
Authority: CN
Inventors: 孙鹏
Original assignee: Dalian Hongyuan Machinery Manufacturing Co ltd
Current assignee: Dalian Hongyuan Machinery Manufacturing Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-01-14
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a sprue cup milling cutter, which relates to the technical field of casting and comprises a long blade and a short blade, wherein the long blade and the short blade are intersected at one position and form a sharp corner, and the length of the long blade is longer than that of the short blade. After exceeding certain cutting diameter, only the long edge works, so that the acting force on the pouring cup milling cutter is reduced, the radial runout of the cutter is reduced, and the pouring cup can be better cut.

Description

Milling cutter for pouring cup

Technical Field

The utility model relates to the technical field of casting, in particular to a sprue cup milling cutter.

Background

The sand moulds of all moulding lines need a milling cutter to wash out the pouring cup, the milling cutter cannot be well processed, the pouring cup surface is not smooth easily, the cup surface and the sprue form a two-layer platform, and a zigzag fracture is arranged at the contact position of the cup opening and the upper surface of the sand mould.

When a milling cutter is used for machining, the sand mold is mainly subjected to three forces, namely pressure in the advancing direction of the milling cutter, shearing force during milling of the milling cutter and radial jumping force generated during rotation of the milling cutter, and the milling cutter is subjected to reaction force. When the milling cutter begins to process the pouring cup, the three acting forces are only the process of forming the pouring cup cavity, and the influence of the magnitude and the direction of the three acting forces on the quality of the pouring cup is small. When the milling cutter rises to the last 10mm and the final point, the pressure and the shearing force of the sand mold on the milling cutter reach the maximum, if the milling cutter is unstable in fixation, the straightness of a shaft of the milling cutter is ultra-poor, the rigidity is small or the bearing clearance is slightly large, the milling cutter can generate radial run-out under the combined action of the pressure and the shearing force, the surface of the sprue cup is not smooth, and the cup opening on the upper surface of the sand mold is a sawtooth fracture. The direction of the shearing force of the milling cutter and the radial jump force are the key factors influencing the quality of the pouring cup.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sprue cup milling cutter which comprises a long blade and a short blade, wherein the long blade and the short blade are converged at one position and form a sharp corner, and the length of the long blade is longer than that of the short blade.

The utility model is further provided with: the included angle between the long blade and the vertical direction is larger than that between the short blade and the vertical direction.

The utility model is further provided with: chamfers are arranged on two sides of the edge surface of the long edge.

The utility model is further provided with: the roughness of the edge surface of the long edge is less than 0.8.

The utility model is further provided with: the sprue cup milling cutter is of a plate-shaped structure.

The utility model is further provided with: the material of the sprue cup milling cutter is W18Cr 4V.

The beneficial technical effects of the utility model are as follows:

1. when twolip cutting, because the degree of wear of different cutting edges is different, can cause the influence to the face that finally mills, the surface is not smooth promptly, and when cutting with an sword all the time, can guarantee cutting quality on the contrary.

2. The reaction force of the milling cutter with a single edge is halved during rotation, so that the clamping of the cutter is more stable, and the cutter is less in jumping.

3. The inner wall of the pouring cup is contacted with the smoother blade surface, so that the damage degree to the inner wall of the pouring cup is smaller during cutting, and the smoother inner wall of the pouring cup can be processed.

Drawings

FIG. 1 is an isometric view of a tundish cutter according to the present invention;

FIG. 2 is an isometric view of a tundish cutter according to the present invention 2;

fig. 3 is a front view of a tundish cutter according to the utility model.

Reference numerals: 1. a long edge; 2. a short edge; 3. and (4) sharp corners.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a milling cutter for a pouring cup, which has a cutter body having a plate-shaped structure. Can be divided into two parts about the blade district, be provided with long sword 1 and minor lip 2 respectively at the both ends that the looks of left half and right half deviate from, long sword 1 and minor lip 2 meet in a department and form closed angle 3. In use, the cutter starts to cut from the sharp corner 3, the sharp corner 3 faces upwards, and the milling cutter advances from bottom to top. The pointed corner 3 is used to locate the lower blade and to cut quickly to form a hole during the lower blade. When the milling cutter is precessed for a certain distance, the sharp corner 3 is still used for cutting a hole, and the pouring cup is formed by the long edge 1. It can be known that the sprue cup milling cutter of the present invention performs single-edge cutting by the long blade 1, and has the following advantages compared to the double-edge cutting in the prior art: 1. when double-edge cutting is performed, due to the fact that the abrasion degrees of different cutting edges are different, the finally milled surface is affected, namely the surface is not smooth, and when one cutting edge is used for cutting all the time, the cutting quality can be guaranteed; 2. the reaction force of the milling cutter with a single edge is halved during rotation, so that the clamping of the cutter is more stable, and the cutter is less in jumping.

The included angle between the long blade 1 and the vertical direction is larger than that between the short blade 2 and the vertical direction. The radial dimension of a part where the short blade 2 is positioned is smaller than that of a part where the long blade 1 is positioned, so that the interference between the blade and the pouring cup when the long blade 1 cuts is avoided.

Chamfers are arranged on two sides of the blade surfaces of the long blade 1 and the short blade 2, and the chamfers are 2-3 mm.

The roughness of the edge surface of the long edge 1 is less than 0.8. For the existing cutter, the roughness of the edge surface is not required, but the roughness of the edge surface is limited by the utility model, and the smoother edge surface is contacted with the inner wall of the pouring cup, so that the damage degree to the inner wall of the pouring cup during cutting is ensured to be smaller, and the smoother inner wall of the pouring cup can be processed.

The material of the sprue cup milling cutter is W18Cr 4V. After forging and heat treatment, the material has higher hardness and good wear resistance.

While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. A sprue cup milling cutter is characterized in that: the cutting tool comprises a long blade (1) and a short blade (2), wherein the long blade (1) and the short blade (2) are intersected at one position and form a sharp corner (3), and the length of the long blade (1) is longer than that of the short blade (2).

2. The sprue cup milling cutter according to claim 1, wherein: the included angle between the long blade (1) and the vertical direction is larger than that between the short blade (2) and the vertical direction.

3. The sprue cup milling cutter according to claim 1, wherein: and chamfers are arranged on two sides of the edge surfaces of the long edge (1) and the short edge (2).

4. The sprue cup milling cutter according to claim 1, wherein: the roughness of the edge surface of the long edge (1) is less than 0.8.

5. The sprue cup milling cutter according to claim 1, wherein: the sprue cup milling cutter is of a plate-shaped structure.

6. The sprue cup milling cutter according to claim 1, wherein: the material of the sprue cup milling cutter is W18Cr 4V.