CN214557705U - Edge milling blade - Google Patents

Abstract

The utility model discloses a milling cutter piece. It includes the mounting hole that regular triangle outline structure's blade body and blade body center set up, and the preceding terminal surface corner position of blade body sets up to the cutting edge, and the three bight of blade body sets up the transition surface that the curved surface passes through, and the transition surface has one section horizontal segment that extends from the preceding terminal surface of blade body level backward and the slope section that links up with the horizontal segment. After adopting foretell structure, utilized transition curved surface to eliminate the stress between three limits of terminal surface before excessive plane and the blade body by a wide margin, strengthened preceding terminal surface bulk cutting intensity greatly to utilize the slope section to shift stress backward and avoided the problem of collapsing the limit of the cutting edge of blade body, thereby life has been prolonged, in addition, not only can avoid frictional force to press from both sides tightly, prevent that the connecting piece from damaging in advance because of transshipping, improved the reliability of use and utilized the annular to reduce the area of pressing the face of joining in marriage, improved dismantlement and change efficiency.

Description

Edge milling blade

Technical Field

The utility model relates to a milling cutter, specifically speaking are edge milling blades for being directed at metal material mills limit.

Background

For the processing of metal plates, especially for welded steel pipes, the raw material used for welding steel pipes is a plate blank with burrs on both sides, in order to ensure the quality of the steel pipes, the plate blank needs to be trimmed to remove the non-straight edges on both sides of the plate blank, and then subsequent forming and welding can be performed, and finally the steel pipes are manufactured, conventionally, a circular trimming and cutting processing mode is adopted, and later, since the trimming and processing can reduce trimming amount, improve plate width precision and reduce plate consumption, the conventional circular trimming and cutting processing mode is gradually replaced by mechanical trimming and processing, while in mechanical trimming and processing, an edge milling blade is inevitably used, the conventional edge milling blade is generally in a regular triangle outer contour structure, three surfaces are formed on the edge milling blade, and during the milling and processing, the edge milling blade mills the metal materials, so the edge milling blade becomes a main easy-to-consume piece, the existing structure can replace the blade on the other side after the blade on one side is damaged, and can be continuously processed and used, but the service life of the edge milling cutter still can not meet the use requirement, and as the edge milling cutter has a very simple structure, under the normal condition, under the condition of meeting the optimal stress condition, researchers improve the wear resistance and the integral strength of the blade by improving the materials, and actually, through the research of practical work of the inventor, the inventor finds that besides the materials, the structural design of the utility model can be aligned with the service life, the most common reason is that due to the limitation of the structural design, on one hand, the problem of edge breakage is prominent, on the other hand, the screw is easy to be damaged in advance due to overload by adopting friction clamping, in addition, although the existing edge milling blade can carry out blade edge conversion, the blade replacement process is complex, and the working efficiency is influenced.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a structural design is ingenious, the installation is changed conveniently, the use good reliability just can effectively reduce the edge-collapsing problem and take place to increase of service life's edge milling blade.

In order to solve the technical problem, the utility model discloses a milling edge blade, including the mounting hole that regular triangle outline structure's blade body and blade body center set up, the preceding terminal surface corner position of blade body sets up to the cutting edge, and the three bight of blade body sets up to the transition surface that the curved surface passes through, and the transition surface has one section horizontal segment that extends from the preceding terminal surface of blade body level backward and the slope section that links up with the horizontal segment.

And the end surface of the blade body is provided with a ring groove positioned on the periphery of the mounting hole.

The cross-sectional shape of the ring groove is a regular triangle structure.

Curved surface transition is arranged between the annular groove and the blade body.

The mounting hole is composed of a conical hole section located on the front end face and a circular hole section connected with the conical hole section.

And a chamfer is arranged at the end face of the conical hole section.

After adopting foretell structure, because the three bight of blade body sets up the transition plane of curved surface transition, utilized transition curved surface to eliminate the stress between three limits of transition plane and the preceding terminal surface of blade body by a wide margin from this, simultaneously, the transition surface comprises the horizontal segment that extends from the preceding terminal surface of blade body level backward and the slope section that links up with the horizontal segment, the whole cutting strength of preceding terminal surface has been strengthened greatly, and utilize the slope section to shift the stress backward and avoided the limit problem that collapses of the cutting edge of blade body, thereby prolong life, in addition, be provided with the annular that is located the mounting hole periphery on the terminal surface of blade body, not only can avoid frictional force to press from both sides tightly, prevent that the connecting piece from damaging in advance because of the overload, improved the reliability of use and utilized the annular to reduce the area of pressing the face, improved dismantlement and change efficiency.

Drawings

Fig. 1 is a schematic perspective view of an edge milling blade according to the present invention;

FIG. 2 is a schematic structural view of the edge milling cutter of the present invention;

FIG. 3 is a schematic side view of the edge milling insert of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 3 according to the present invention.

Detailed Description

The edge milling insert of the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

As shown in the figure, the edge milling blade of the utility model comprises a blade body 1 with a regular triangle outline structure and a mounting hole 2 arranged at the center of the blade body, the corner part of the front end surface of the blade body 1 is arranged as a cutting edge, the three corners of the blade body 1 are arranged as transition surfaces 3 transited by curved surfaces, the transition surfaces 3 are provided with a horizontal section 4 horizontally extending backwards from the front end surface of the blade body and an inclined section 5 jointed with the horizontal section, as can be seen from the figure, the transition surfaces 3 are two jointed planes consisting of the horizontal section and the inclined section, in the embodiment, the ratio of the length of the horizontal section 4 to the length of the inclined section 5 is about 20:1, that is, the horizontal section 4 is only a small length of the front end face of the blade body, and the horizontal section is used for enhancing the overall cutting strength of the front end face and transferring stress backwards by utilizing the inclined section to avoid the edge breakage problem of the cutting edge of the blade body.

Furthermore, the end face of the blade body 1 is provided with an annular groove 6 positioned at the periphery of the mounting hole, the cross section of the annular groove 6 is in a regular triangle structure, as can be seen from the figure, the annular groove is concentric with the blade body, and each side is parallel to each side of the blade body, meanwhile, a curved surface transition is arranged between the annular groove 6 and the joint of the blade body 1, so that stress concentration is reduced, as the material cost of the edge milling blade is high, not only are the consumables reduced through the annular groove, but also the whole weight of the edge milling blade is reduced, meanwhile, the gap formed by the annular groove is skillfully utilized, so that the friction force can be avoided from clamping, the connecting piece is prevented from being damaged in advance due to overload, of course, the annular grooves can also be arranged on the front end face and the rear end face of the blade body 1, and the purpose of the annular groove on the rear end face is to save materials.

Still further, the mounting hole 2 said comprises a section of taper hole section that is located preceding terminal surface department and the round hole section that links up with the taper hole section, the terminal surface department of taper hole section is provided with chamfer 7, the reliability of installation can be improved through the design of this taper hole section, can reduce the area of contact of connecting piece and mounting hole, and the consumptive material has further been reduced moreover, saved cutter cost and also further alleviateed whole weight naturally, especially can increase substantially the fracture limit and the limit speed of rotation of cutter through the alleviate of weight, the effect is very outstanding.

It should be noted that the utility model discloses still utilized the cross sectional shape to cooperate for the annular 6 of regular triangle structure and the mounting hole 2 that has the taper hole section, improved the dynamic balance nature of cutter, the dynamic balance nature that improves the cutter can show and reduce centrifugal force, improves the security of high-speed cutter, and in practical application, its effect is also fairly outstanding.

The technical requirements are as follows:

(1) when the blade is used for producing steel pipes with the thickness of 20-26.4mm in the X80 steel grade wall thickness range in batch, the single-side cutting amount is 4-6mm, and the number of steel plates continuously cut by each edge of each surface is more than 60;

(2) when a steel pipe with the steel grade below X80 and the wall thickness below 20mm is milled, the single-side cutting amount is 4-6mm, and the number of steel plates continuously cut by each surface edge is more than 70;

(3) during continuous production, the cutting of more than 150 steel plates by 1 blade (three-edge) on average is ensured.

Recommend through production guarantee center to the utility model discloses a milling cutter blade is tried, and the specification of milling cutter blade on probation is 33mm 27.45mm, and milling cutter blade on probation passes through phi 813 15.9mm, and the production of L485M specification is verified, and the processing of 88/82/80 (totally 250) steel pipes is milled to three edges, reaches and is higher than "mill below X80 steel grade wall thickness scope below 20mm, and unilateral cutting output is 4-6mm, and each edge continuous cutting steel sheet quantity should reach more than 70; and during continuous production, the technical requirement that more than 150 steel plates can be cut by 1 blade (three-edge blade) on average is ensured.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (6)

1. The utility model provides a milling edge blade, includes blade body (1) and blade body center mounting hole (2) that set up of regular triangle outline structure, its characterized in that: the front end face corner position of blade body (1) sets up to the cutting edge, the three bight of blade body (1) sets up transition surface (3) for the curved surface transition, transition surface (3) have one section from the preceding terminal surface of blade body horizontal extension backward horizontal segment (4) and with slope section (5) that the horizontal segment links up.

2. The edge milling insert of claim 1, wherein: and the end surface of the blade body (1) is provided with a ring groove (6) positioned on the periphery of the mounting hole.

3. The edge milling insert of claim 2, wherein: the cross section of the ring groove (6) is in a regular triangle structure.

4. The edge milling insert of claim 3, wherein: curved surface transition is arranged between the annular groove (6) and the blade body (1).

5. Edge milling insert according to claim 1, 2, 3 or 4, characterized in that: the mounting hole (2) is composed of a conical hole section positioned at the front end face and a circular hole section connected with the conical hole section.

6. The edge milling insert of claim 5, wherein: and a chamfer (7) is arranged at the end face of the conical hole section.

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