Burring cutter capable of rebounding automatically

Abstract

The invention discloses a burring cutter capable of rebounding automatically. The burring cutter capable of rebounding automatically comprises a blade (1) and is characterized in that a vertical bar shaped hole (2) vertical to the blade (1) is formed in the middle of the lower part of the blade (1), a cutting edge (3) which protrudes a sidewall is formed at the sidewall of the lower part of the vertical bar shaped hole (2), an inclined bar shaped hole (4) obliquely intersecting with the vertical bar shaped hole (2) to form an angle of 130 degrees to 140 degrees is also formed in the blade (1) below the vertical bar shaped hole (2), and the bottom wall of the oblique bar shaped hole (4) extends to the sidewall of the blade (1) below the cutting edge (3). The burring cutter has good rebounding force and can remove burrs completely.

Description

Technical field [0001] The invention relates to the technical field of deburring tools, in particular to an automatic rebound deburring tool. Background technique [0002] Such as figure 1 Shown is a schematic cross-sectional structure diagram of a processed product. The processed product is provided with vertical holes 1ˊ and horizontal holes 2ˊ perpendicular to each other. The intersecting lines of vertical holes 1ˊ and horizontal holes 2ˊ are left due to machining There are many burrs, some of the burrs are upward, some are downward, some extend toward the center of the vertical hole, and some extend toward the center of the horizontal hole, and the burrs spread out in a radial shape. [0003] In order to remove the burrs of this type of product, the ordinary solid blade deburring knife generally can only remove the burrs in one direction, but the burrs that extend in a radial shape, especially the burrs that extend toward the center of the horizontal hole, cannot be completely ...

AI Technical Summary

Problems solved by technology

But the deburring knife removes such as figure 1 For the processed product shown in , the rebound force of the deburring knife is not very sufficient due to the straight notch, and it is difficult to remove the burrs extending toward the center of the horizontal hole during the burr removal process.

[0005] In order to increase the resilience, the technicians in the industry consciously make the cutting edge size of the front end of the deburring knife 0.5mm larger than the inner diameter of the vertical hole, but because the processed product is a precision product, and the vertical hole is a finished hole , when the size of the cutting edge is 0.5mm larger than the inner diameter of the vertical hole, the cutting edge will cause a lot of wear on the inner wall of the vertical hole, which will greatly reduce the accuracy of the inner wall of the vertical hole. It can be seen that increasing the size of the cutting edge cannot solve the rebound force Adding to this technical difficulty

In addition, people in the industry also consciously design the width of the straight notch to be wider to increase the resilience. When the width of the straight notch is kept within the allowable width of 0.5-1.0mm in the utility model patent, the burrs will also disappear. It cannot be completely removed, especially when the width of the straight notch is designed to be 1mm or more, the burrs still cannot be completely removed, and at the same time, due to the increase in the width of the straight notch, the wall thickness of the straight notch is greatly increased. reduced, the strength is reduced, and it is easy to be damaged during high-speed cutting. It can be seen that the technical problem of increasing the rebound force cannot be solved by enlarging the width of the straight notch.

In order to increase the resilience, technical personnel in the industry have gone through many R & D designs, but have not yet obtained a practical and feasible solution. How to transform the deburring knife to obtain excellent resilience has become an unsolved and urgent need in the industry. Solved technical problems

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