CN219130891U

CN219130891U - Milling cutter special for honeycomb long teeth

Info

Publication number: CN219130891U
Application number: CN202223471771.8U
Authority: CN
Inventors: 阙智勇; 李双全; 王子申; 宋有明
Original assignee: Chengdu Jiachi Electronic Technology Co ltd
Current assignee: Chengdu Jiachi Electronic Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-06
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a milling cutter special for honeycomb long teeth, which aims to solve the technical problem that in the prior art, when a special sandwich honeycomb material is processed by using a commercially available cutter, a burr phenomenon is generated, so that the surface quality of a workpiece is poor and does not meet the processing requirement. The cutting tool comprises a tool bar (1), a cutting position (2) and a cutting edge (3), wherein the whole tool bar (1) is of a cylindrical structure, and the tool bar (1) is loaded on a tool handle and is connected with a numerical control machine tool; the cutting position (2) is fixed at one end of the cutter bar (1), the cutting position (2) is provided with a rake face and a flank face, and cutting edges (3) are sequentially distributed on the rake face and the flank face. The utility model has excellent processing effect, can cut without any cooling mode under the processing condition, greatly reduces the probability of fracture and breakage of long teeth, improves the yield of workpieces, saves the processing cost, and simultaneously can cut at high speed, thereby improving the smoothness of the honeycomb surface.

Description

Milling cutter special for honeycomb long teeth

Technical Field

The utility model relates to the field of cutting tools, in particular to a milling cutter special for honeycomb long teeth.

Background

With the development of modern aviation technology, higher requirements are put forward on the stealth performance of aviation aircrafts, and a large number of novel high-performance materials are introduced. The honeycomb wave-absorbing material is widely applied to new generation fighter aircrafts by virtue of the advantages of high strength-weight ratio and the like. However, the honeycomb wave-absorbing material itself has poor cutting performance, especially the numerical control machining of the long teeth of the honeycomb wave-absorbing material, and the existing machining tool for machining the honeycomb wave-absorbing material has essential difference from the machining of metal parts, the cutting edge of the tool generates the cutting chips not by shearing like most metals, but by breaking to remove the redundant wave-absorbing material, and mainly comprises the machining of profiles and contours. The machining depth of the honeycomb is not too large, and the phenomenon that the resected honeycomb damages the unresectated honeycomb easily occurs; or the long teeth are scrapped due to the contact of the cutter body of the cutter and the honeycomb side plate; finally, the existing special cutter for processing the honeycomb wave-absorbing material has the problems of low cutting rate, poor quality and high rejection rate; and meanwhile, the cutting chip and the honeycomb material are cut secondarily, so that the cutting temperature is increased, and the processing quality of the honeycomb material is affected. In addition, since the honeycomb material is strictly prohibited from being contacted with liquids such as water, oil, etc., the honeycomb processing cannot use cutting fluid, and it is difficult to remove powdery chips adhered to the cutter in an effective manner. The high-quality and high-efficiency milling processing requirement of the long teeth of the honeycomb wave-absorbing material part is difficult to meet, and due to the characteristics of the material, the quality problems of over-cutting, milling damage, tearing, deformation, multiple burrs and the like are easy to generate in the process of processing the long teeth, so that the yield of the part is low, the processing efficiency is low, and the development period of an airplane is seriously influenced. In the processing of the honeycomb wave-absorbing material, research discovers that the selection of the cutter plays a very important role, and the traditional cutter is difficult to meet the high-efficiency and high-precision processing of the honeycomb wave-absorbing material, so that the processing of the honeycomb wave-absorbing material brings urgent demands for a novel processing cutter. Therefore, the utility model provides a cutter with rapid processing long teeth, which is used for milling the side wall of the long teeth of the honeycomb wave-absorbing material, aiming at the problems of low cutting rate and poor quality of the existing combined cutter for processing the honeycomb wave-absorbing material.

Disclosure of Invention

The utility model aims to provide a milling cutter special for honeycomb long teeth, which solves the technical problems that in the prior art, when a special sandwich honeycomb material is processed by using a commercially available cutter, a burr phenomenon is generated, so that the surface quality of a workpiece is poor and the processing requirement is not met.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a special milling cutter for honeycomb long teeth, which comprises a cutter bar, a cutting position and a cutting edge, wherein the whole cutter bar is of a cylindrical structure, and the cutter bar is loaded on a cutter handle and is connected with a numerical control machine tool; the cutting position is fixed at one end of the cutter bar, and is provided with a rake face and a flank face which are sequentially provided with cutting edges.

Furthermore, the cutter bar and the cutting position are of an integrated structure.

Further, the cutting positions are provided with 12 spiral blades, and the spiral angle is 35-45 degrees.

Further, the spiral blade is a left spiral blade, the tooth pitch of each blade is 1.5-2.5 mm, and the tooth depth is 1-2 mm.

Furthermore, the upper side of the cutting position is provided with a clearance gap, and the diameter of the clearance gap cutter body is smaller than 0.2-1 mm of the diameter of the cutting position.

Further, the rake angle of the cutting edge is 22-24 degrees.

Based on the technical scheme, the embodiment of the utility model at least has the following technical effects:

the special milling cutter for the honeycomb long teeth has the advantages that the milling cutter is excellent in machining effect, can cut without any cooling mode under the machining condition, greatly reduces the probability of fracture and breakage of the long teeth, improves the yield of workpieces, saves the machining cost, can cut under the high-speed condition, improves the smoothness of the honeycomb surface, can replace the cutter with the same diameter under the special condition, and is convenient for numerical milling machining.

Drawings

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

FIG. 1 is a perspective view of a milling cutter special for honeycomb long teeth of the present utility model;

FIG. 2 is a front view of the honeycomb long tooth special milling cutter of the present utility model;

FIG. 3 is a top view of the honeycomb long tooth special milling cutter of the present utility model;

in the above figures, the reference numerals correspond to the component names as follows:

1. a cutter bar; 2. a cutting position; 3. a cutting edge; 4. avoiding gaps.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The aim of the utility model is realized by the following technical scheme:

as shown in fig. 1 and 2, the milling cutter special for honeycomb long teeth is provided with a cutter bar 1 and a cutting position 2, the cutter bar 1 is integrally of a cylindrical structure, the cutter bar 1 is used for being loaded on a cutter handle and is convenient to connect with a numerical control machine tool, the cutting position 2 is fixed at one end of the cutter bar 1, the cutting position 2 is provided with a front cutter surface and a rear cutter surface, cutting edges 3 are sequentially distributed on the front cutter surface and the rear cutter surface, the cutting edges 3 are mainly used for finish milling and deburring of the side wall of the honeycomb long teeth, and the front angle of the cutting edges 3 is 22-24 degrees.

Further, the cutting sites 2 are provided with 12 spiral blades, and the spiral angle is 35-45 degrees.

When the milling cutter special for honeycomb long teeth is used, as shown in figures 2 and 3, the tooth depth cannot exceed the length of the cutting position 2, the length of the cutting edge 3 is generally not more than 10mm, the upper side of the cutting position 2 is provided with the clearance gap 3, and the diameter of the cutter body of the clearance gap 4 is smaller than the diameter of the cutting position 2 by 0.2-1 mm so as to achieve the purpose of clearance.

The cutter is specially used for machining honeycomb long teeth, and the long teeth are of the following types: the tooth width/tooth length is not less than 2, the tooth height/tooth length is not less than 2, and the cutter is specially used for processing the cutter.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The milling cutter special for the honeycomb long teeth is characterized by comprising a cutter bar (1), a cutting position (2) and a cutting edge (3), wherein the cutter bar (1) is of a cylindrical structure as a whole, and the cutter bar (1) is loaded on a cutter handle and is connected with a numerical control machine tool; the cutting position (2) is fixed at one end of the cutter bar (1), the cutting position (2) is provided with a rake face and a flank face, and cutting edges (3) are sequentially distributed on the rake face and the flank face; the cutting machine is characterized in that spiral blades are arranged on the cutting position (2), the number of the spiral blades is 12, the spiral angle is 35-45 degrees, the spiral blades are left spiral blades, the tooth pitch of each blade is 1.5-2.5 mm, the tooth depth is 1-2 mm, a clearance gap (4) is formed in the upper side of the cutting position (2), and the diameter of a cutter body of the clearance gap (4) is smaller than 0.2-1 mm of the diameter of the cutting position (2).

2. The honeycomb long tooth special milling cutter according to claim 1, wherein: the cutter bar (1) and the cutting position are of an integrated structure.

3. The honeycomb long tooth special milling cutter according to claim 1, wherein: the rake angle of the cutting edge (3) is 22-24 degrees.