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Multi-taper milling cutter for milling micro groove and application thereof

A milling processing, tiny technology, applied in the direction of milling cutting blades, milling cutters, metal processing equipment, etc., can solve the problems of unstable surface quality, excessive tool loss, high processing cost, etc., to achieve control chipping and fracture, groove Improved milling efficiency and improved safety

Inactive Publication Date: 2019-10-01
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In tooling parts with a groove size of 1mm in width and 0.85mm in depth processed by a Φ1mm diameter milling cutter, 1 end milling cutter processes an average of 10 parts, and the tool will be worn out, chipped or broken, and the processing cost is high. Low efficiency and inconsistent surface quality
Among the consumed tools, chipping and fracture are the main reasons. The main reason is that the core diameter of the Φ1mm milling cutter is only Φ0.6mm, the tool strength is poor, and the cutting point is at the tip of the tool, and the cutting force is applied to the blade. Affects easy deformation and causes abnormal conditions such as springing and vibration of the knife, resulting in excessive tool loss

Method used

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  • Multi-taper milling cutter for milling micro groove and application thereof
  • Multi-taper milling cutter for milling micro groove and application thereof
  • Multi-taper milling cutter for milling micro groove and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The main structure of this embodiment, such as figure 2 , image 3 As shown, it includes a shank 5 installed on a CNC machine tool and a cutting part 6 for micro-groove processing. The cutting edge 7 of the cutting part 6 is formed by cutting with several positive taper planes that form an angle α with the axis plane. , the corners at the intersection of the planes are sharp edges 7, where 15°≤α≤25°.

[0030] Among them, the optimal taper angle of the cutting part is 20°. Since there is generally an interference structure in the milling parts, ordinary milling cutters cannot avoid the interference structure to progressively process the arc surface parts. After calculation, the influence of the value of tanα The length of the cutting part determines whether it will be affected by the interference structure, and the value of tanα also has a certain influence on the cutting effect. After multiple experiments by the inventor in actual operation, it was finally verified t...

Embodiment 2

[0033] In this embodiment, on the basis of the foregoing embodiments, the milling cutter is further limited to a square taper milling cutter, such as figure 2 , image 3 As shown, the cutting portion 6 is formed by cutting with four positive taper planes forming an angle of 20° with the axial plane. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

Embodiment 3

[0035] In this embodiment, on the basis of the foregoing embodiments, the structure of the cutting portion 6 is further improved, such as figure 2 As shown, the diameter of the tip of the cutting part 6 is the same as the width of the tiny groove to be processed. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

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Abstract

The invention discloses a multi-taper milling cutter for milling a micro groove. The multi-taper milling cutter comprises a shank part arranged on a numerical control machine tool and a cutting part for machining the micro groove, wherein a cutting edge of the cutting part is formed by cutting a plurality of positive taper planes forming an angle alpha with an axial plane; the edge angle at the intersection of the planes is a sharp cutting edge; and the alpha is greater than or equal to 15 degrees but less than or equal to 25 degrees. The multi-taper milling cutter is mainly used for milling micro grooves on parts with interference objects and circular arc surfaces. According to the multi-taper milling cutter, the structure of the milling cutter is optimized, therefore, the quality and stability of a milling surface of the groove can be improved by avoiding the interference objects, and the surface roughness value completely meets the technical requirements; the manufacturing cost of groove tooling parts is reduced, the milling efficiency is improved, and the service life is prolonged; and the tipping and breaking of the cutter are effectively controlled, the safety of machining the parts is improved, the occurrence of accidents is reduced, and the multi-taper milling cutter is suitable for wide application and popularization.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a multi-taper milling cutter for milling tiny grooves and an application thereof. Background technique [0002] In mechanical processing, groove milling is a common and common method. The types of milling equipment include vertical milling and horizontal milling. Groove characteristics exist in different types of parts and select the corresponding milling equipment and milling tools. [0003] The milling of grooves on the arc surface with interference is difficult to perform finishing machining such as grinding and trimming due to its structural characteristics, especially for width ≤ 3mm, depth ≤ 3mm, and milling surface roughness values ​​that require It is more difficult to mill small grooves. However, such parts are more common in aviation tooling parts, typical tooling parts (such as figure 1 Shown), the groove size is 1mm in width and 0.85mm in depth), and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/10
CPCB23C5/10B23C2200/085B23C2210/203
Inventor 胡国荣孙林黄彪许伟王安全牟雄
Owner CHENGDU AIRCRAFT INDUSTRY GROUP