阅读说明：本技术 一种带有气压支撑的镗刀及除颤振方法 (Boring cutter with air pressure support and vibration eliminating method ) 是由 李�烈 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种带有气压支撑的镗刀及除颤振方法,适用于金属切削加工技术领域使用。镗刀刀体上设有抑制镗刀刀体颤振的喷气式除震装置,喷气式除震装置包括设置在镗刀刀体侧壁的多路高压气孔以及设置在镗刀刀体内与高压气孔导通的多路气道,气道沟通高压气孔与镗刀刀体尾端。利用配气阀分别调整每个气道的的喷气量从而向镗刀刀体起到支撑作用,通过配气阀对多路气道的开闭和气体流量调整进行单独控制,消除镗刀刀体在加工被切削工件时产生的颤振。其结构简单,利用喷气产生的反作用力对镗杆起到辅助支撑作用,提高了镗杆的支撑刚度,有利于降低零件加工中的振动,提高加工表面的质量。(The invention discloses a boring cutter with an air pressure support and a vibration eliminating method, which are suitable for the technical field of metal cutting processing. The jet type vibration eliminating device comprises a plurality of high-pressure air holes arranged on the side wall of the boring cutter body and a plurality of air passages arranged in the boring cutter body and communicated with the high-pressure air holes, and the air passages are communicated with the high-pressure air holes and the tail end of the boring cutter body. The air distribution valve is used for respectively adjusting the air injection quantity of each air passage so as to support the boring cutter body, and the air distribution valve is used for independently controlling the opening and closing of the multiple air passages and the adjustment of the air flow, so that the flutter generated when the boring cutter body processes the cut workpiece is eliminated. The boring bar support device is simple in structure, the reaction force generated by air injection plays a role in auxiliary support for the boring bar, the support rigidity of the boring bar is improved, the vibration in part machining is reduced, and the quality of a machined surface is improved.)

1. The utility model provides a boring cutter with atmospheric pressure supports which characterized in that: the jet type vibration eliminating device comprises a boring cutter body (2), wherein the boring cutter body (2) is provided with a jet type vibration eliminating device for inhibiting the vibration of the boring cutter body (2).

2. The boring tool with pneumatic support of claim 1, wherein: the jet type vibration eliminating device comprises a plurality of paths of high-pressure air holes arranged on the side wall of the boring cutter body (2) and a plurality of paths of air passages (21) arranged in the boring cutter body (2) and communicated with the high-pressure air holes, wherein the plurality of paths of high-pressure air holes are uniformly distributed on the side wall of the boring cutter body (2) to ensure that the weight of the boring cutter body (2) is uniform.

3. The boring tool with pneumatic support of claim 2, wherein: the multiple air passages (21) are uniformly distributed in the boring cutter body (2) to balance the balance weight of the boring cutter body (2), and the air passages (21) are communicated with the high-pressure air hole and the tail end of the boring cutter body (2).

4. The boring tool with pneumatic support of claim 3, wherein: the multi-path air passage (21) is respectively connected with an air distribution valve (3) arranged at the tail part of the boring cutter body (2), and an air inlet (31) for providing high-pressure air is arranged on the air distribution valve (3).

5. The boring tool with pneumatic support of claim 3, wherein: the multiple paths of high-pressure air holes are symmetrically arranged on the side wall of the boring cutter body (2) in opposite directions, so that high-pressure air discharged by the high-pressure air holes and the high-pressure air discharged by the side wall of the boring cutter body (2) are mutually counteracted to eliminate the flutter of the boring cutter body (2), and the high-pressure air holes are arranged perpendicular to the side wall of the boring cutter body (2).

6. The boring tool with pneumatic support of claim 5, wherein: the section of the air passage (21) is circular.

7. A method of defibrillation using the boring cutter with pneumatic support of any preceding claim, characterized by the steps of: the boring cutter body (2) is connected to a boring cutter machine tool and a test is started, an air source connected with an air inlet (31) is started, high-pressure air enters the boring cutter body (2) along the axial direction of an air passage (21) and is sprayed out along the radial direction of the boring cutter body (2), then the air distribution valve (3) is used for respectively adjusting the air injection quantity of each air passage (21) so as to play a supporting role for the boring cutter body (2), the opening and closing of the multi-path air passages (21) and the air flow regulation are independently controlled through the air distribution valve (3), the flutter generated when the boring cutter body (2) processes a cut workpiece (1) is eliminated, and the size and the acting time of reaction force of the boring cutter body (2) in multiple directions are controlled through controlling the air injection condition of each high-pressure air hole, so as to adapt to different boring working conditions.

Technical Field

The invention relates to a boring cutter and a vibration eliminating method, in particular to a boring cutter with an air pressure support and a vibration eliminating method which are suitable for the technical field of metal cutting.

Background

In machining, a boring tool is generally used for hole machining. When deep hole boring is carried out, the boring cutter is extended in a suspending way, the rigidity is low, and the flutter instability is easy to occur, so that the surface quality of processing is influenced. In order to inhibit the flutter, the existing boring cutter generally hollows the inside of the boring cutter, and a vibration absorber is arranged in the boring cutter, so that a large amount of materials in the boring cutter need to be removed, the rigidity of a boring bar is greatly weakened, and in addition, the vibration absorber is complex in structure and is inconvenient to install and adjust.

Disclosure of Invention

The technical problem is as follows: the boring cutter with the air pressure support and the defibrillation vibration method have the advantages of simple structure, good use effect and low production cost.

The technical scheme is as follows: in order to achieve the technical purpose, the boring cutter with the pneumatic support comprises a boring cutter body, wherein an air jet type vibration removal device for inhibiting the vibration of the boring cutter body is arranged on the boring cutter body.

Furthermore, the jet-propelled vibration damper comprises a plurality of paths of high-pressure air holes arranged on the side wall of the boring cutter body and a plurality of paths of air passages arranged in the boring cutter body and communicated with the high-pressure air holes, and the plurality of paths of high-pressure air holes are uniformly distributed on the side wall of the boring cutter body, so that the weight of the boring cutter body is uniform.

Furthermore, the multiple air passages are uniformly distributed in the boring cutter body to balance the balance weight of the boring cutter body, and the air passages are communicated with the high-pressure air hole and the tail end of the boring cutter body.

Furthermore, the multi-path air passages are respectively connected with an air distribution valve arranged at the tail part of the boring cutter body, and the air distribution valve is provided with an air inlet for providing high-pressure air.

Furthermore, the multiple paths of high-pressure air holes are symmetrically arranged on the side wall of the boring cutter body in opposite directions, so that high-pressure air exhausted by the multiple paths of high-pressure air holes and high-pressure air exhausted by the multiple paths of high-pressure air holes are mutually offset, and the flutter of the boring cutter body is eliminated.

Further, the cross section of the air passage is circular.

A vibration-eliminating method of a boring cutter with an air pressure support comprises the following steps: the method comprises the steps of connecting a boring cutter body to a boring cutter machine tool, starting a test, starting an air source connected with an air inlet, enabling high-pressure air to enter the boring cutter body along the axial direction of an air passage and be sprayed out along the radial direction of the boring cutter body, then respectively adjusting the air spraying amount of each air passage by utilizing an air distribution valve so as to play a supporting role on the boring cutter body, independently controlling the opening and closing of a plurality of air passages and the adjustment of air flow through the air distribution valve, eliminating flutter generated when the boring cutter body processes a cut workpiece, and further controlling the size and the acting time of reaction force in a plurality of directions of the boring cutter body by controlling the respective air spraying conditions of a plurality of high-pressure air holes so as to adapt to different boring working conditions.

Has the advantages that: the advantages brought by the invention are the indexes achieved.

1) The boring cutter is supported in an auxiliary mode by utilizing the reacting force of air injection, so that the rigidity of the boring rod is improved, and the boring stability is improved;

2) the gas distribution valve can independently control the opening and closing of the four channels and the flow of gas, and further control the magnitude and the acting time of the reaction force in four directions, so that the boring cutter is suitable for different boring working conditions.

Drawings

Fig. 1 is a schematic structural diagram of a boring cutter with a pneumatic support according to the invention.

In the figure: 1-a workpiece to be cut; 2-boring cutter; 21-the airway; 3-distributing valve; 31-air intake

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the boring cutter with the pneumatic support comprises a boring cutter body 2, and the boring cutter body 2 is provided with an air jet type vibration eliminating device for inhibiting the vibration of the boring cutter body 2. The jet type vibration eliminating device comprises a plurality of paths of high-pressure air holes arranged on the side wall of the boring cutter body 2 and a plurality of paths of air passages 21 arranged in the boring cutter body 2 and communicated with the high-pressure air holes, and the plurality of paths of high-pressure air holes are uniformly distributed on the side wall of the boring cutter body 2 to ensure that the weight of the boring cutter body 2 is uniform. The multiple air passages 21 are uniformly distributed in the boring cutter body 2 to balance the boring cutter body 2 by a balance weight, and the air passages 21 are communicated with the high-pressure air hole and the tail end of the boring cutter body 2. The multi-path air passage 21 is respectively connected with an air distribution valve 3 arranged at the tail part of the boring cutter body 2, and an air inlet 31 for providing high-pressure air is arranged on the air distribution valve 3. The multiple paths of high-pressure air holes are symmetrically arranged on the side wall of the boring cutter body 2 in opposite directions, so that high-pressure air exhausted by the multiple paths of high-pressure air holes is mutually counteracted to eliminate flutter of the boring cutter body 2, and the high-pressure air holes are arranged perpendicular to the side wall of the boring cutter body 2. The section of the air passage 21 is circular.

A vibration-eliminating method of a boring cutter with an air pressure support comprises the following steps: the method comprises the steps of connecting a boring cutter body 2 to a boring cutter machine tool, starting a test, starting an air source connected with an air inlet 31, enabling high-pressure air to enter the boring cutter body 2 along the axial direction of an air passage 21 and be sprayed out along the radial direction of the boring cutter body 2, then respectively adjusting the air spraying amount of each air passage 21 by using an air distribution valve 3 so as to play a supporting role for the boring cutter body 2, independently controlling the opening and closing of a plurality of air passages 21 and the adjustment of the air flow amount through the air distribution valve 3, eliminating the flutter generated when the boring cutter body 2 processes a cut workpiece 1, and further controlling the magnitude and the acting time of reaction force in multiple directions of the boring cutter body 2 by controlling the respective air spraying conditions of a plurality of high-pressure air holes so as to adapt to different boring working conditions.

The reaction force of the air injection provides auxiliary support for the boring bar, and the support rigidity of the boring bar is improved.