阅读说明：本技术 一种等强度悬臂梁式复合动力减振刀杆 (A kind of equi intensity cantilever formula composite power Boring Bar ) 是由 彭彬彬 武文革 刘永姜 刘丽娟 成云平 于 2019-09-02 设计创作，主要内容包括：本发明涉及减振刀杆,具体是一种等强度悬臂梁式复合动力减振刀杆。本发明解决了动力减振器式减振刀杆在刀具颤振的频率和方向发生变化时减振效果减弱或消失的问题。一种等强度悬臂梁式复合动力减振刀杆,包括刀杆体、等强度悬臂梁、弹簧垫圈、对顶螺母、减振颗粒；其中,刀杆体的前端面开设有圆形凹腔,且圆形凹腔的中心线与刀杆体的中心线重合；圆形凹腔的底面中央开设有盲螺孔,且盲螺孔的中心线与圆形凹腔的中心线重合；所述等强度悬臂梁包括正六边形座板、圆台形主体、第一螺柱、第二螺柱；圆台形主体的粗端端面与正六边形座板的前表面固定为一体,且圆台形主体的中心线与正六边形座板的中心线重合。本发明适用于金属切削加工。(The present invention relates to Boring Bar, specifically a kind of equi intensity cantilever formula composite power Boring Bar.The present invention solves the problems, such as that dynamic shock absorber formula Boring Bar effectiveness in vibration suppression when the frequency of cutter flutter and direction change weakens or disappears.A kind of equi intensity cantilever formula composite power Boring Bar, including knife bar body, equi intensity cantilever, spring washer, double nut, vibration damping particle；Wherein, the front end face of knife bar body offers circular-shaped, concave cavity, and the center line of circular-shaped, concave cavity is overlapped with the center line of knife bar body；The bottom surface center of circular-shaped, concave cavity offers blind screwhole, and the center line of blind screwhole is overlapped with the center line of circular-shaped, concave cavity；The equi intensity cantilever includes regular hexagon seat board, truncated cone-shaped main body, the first stud, the second stud；The butt end end face of truncated cone-shaped main body and the front surface of regular hexagon seat board are fixed as one, and the center line of truncated cone-shaped main body is overlapped with the center line of regular hexagon seat board.The present invention is suitable for metal cutting process.)

1. a kind of equi intensity cantilever formula composite power Boring Bar, it is characterised in that: including knife bar body (1), equal strength cantilever Beam, spring washer (3), double nut (4), vibration damping particle (5)；

Wherein, the front end face of knife bar body (1) offers circular-shaped, concave cavity, and the center of the center line of circular-shaped, concave cavity and knife bar body (1) Line is overlapped；The bottom surface center of circular-shaped, concave cavity offers blind screwhole, and the center line of blind screwhole is overlapped with the center line of circular-shaped, concave cavity；

The equi intensity cantilever includes regular hexagon seat board (201), truncated cone-shaped main body (202), the first stud (203), second Stud (204)；The butt end end face of truncated cone-shaped main body (202) and the front surface of regular hexagon seat board (201) are fixed as one, and circle The center line of platform shape main body (202) is overlapped with the center line of regular hexagon seat board (201)；The rear end face of first stud (203) with The taper end end face of truncated cone-shaped main body (202) is fixed as one, and the center line of the first stud (203) and truncated cone-shaped main body (202) Center line be overlapped；The front end face of second stud (204) and the rear surface center of regular hexagon seat board (201) are fixed as one, And second the center line of stud (204) be overlapped with the center line of regular hexagon seat board (201)；Second stud (204) is screwed in blind In screw hole；

Spring washer (3) is sheathed on the side of the second stud (204), and the both ends end face of spring washer (3) is recessed with circle respectively The bottom surface of chamber and the rear surface contact of regular hexagon seat board (201)；Double nut (4) is screwed in the side of the first stud (203)； Vibration damping particle (5) is filled in circular-shaped, concave cavity.

2. a kind of equi intensity cantilever formula composite power Boring Bar according to claim 1, it is characterised in that: to top spiral shell Female (4), which can be considered, to be attached on equi intensity cantilever and the adjustable mass block in position, the mass block and equi intensity cantilever combination Get up and can produce the effectiveness in vibration suppression of single dynamic shock absorber, effectiveness in vibration suppression thus is generated to the cutter flutter of specific frequency.

3. a kind of equi intensity cantilever formula composite power Boring Bar according to claim 1, it is characterised in that: vibration damping Grain (5) on the one hand generates friction damping effect and impact damper system effect, and friction is on the other hand generated between equi intensity cantilever Effect, so that damping mode Composite of the invention.

4. a kind of equi intensity cantilever formula composite power Boring Bar according to claim 1, it is characterised in that: described to subtract Particle (5) are shaken for tungsten particle or lead particle.

Technical field

The present invention relates to Boring Bar, specifically a kind of equi intensity cantilever formula composite power Boring Bar.

Background technique

Cutter flutter is one of most common failure mode in metal cutting process, not only restricts machining accuracy and adds The raising of work efficiency rate, and will cause the improper damage and noise pollution of cutter.In order to overcome cutter Flutter Problem, at present most Common approach is using dynamic shock absorber formula Boring Bar.Dynamic shock absorber formula Boring Bar generally uses built-in one or several The structural shape of a mass block, the defect of such structural shape are can only to generate to the cutter flutter of specific frequency and specific direction Effectiveness in vibration suppression, the problem of thus bringing, are: when the frequency of cutter flutter and direction change with the variation of processing operating condition When, the effectiveness in vibration suppression of dynamic shock absorber formula Boring Bar can weaken or disappear, and thus lead to dynamic shock absorber formula Boring Bar The scope of application is limited.Based on this, it is necessary to invent a kind of completely new Boring Bar, be existed with solving dynamic shock absorber formula Boring Bar The problem of effectiveness in vibration suppression weakens or disappears when the frequency of cutter flutter and direction change.

Summary of the invention

The present invention subtracts to solve dynamic shock absorber formula Boring Bar when the frequency of cutter flutter and direction change The problem of vibration decreased effectiveness or disappearance, provide a kind of equi intensity cantilever formula composite power Boring Bar.

The present invention is achieved by the following technical scheme:

A kind of equi intensity cantilever formula composite power Boring Bar, including knife bar body, equi intensity cantilever, spring washer, to top Nut, vibration damping particle；

Wherein, the front end face of knife bar body offers circular-shaped, concave cavity, and the center line of circular-shaped, concave cavity is overlapped with the center line of knife bar body； The bottom surface center of circular-shaped, concave cavity offers blind screwhole, and the center line of blind screwhole is overlapped with the center line of circular-shaped, concave cavity；

The equi intensity cantilever includes regular hexagon seat board, truncated cone-shaped main body, the first stud, the second stud；Truncated cone-shaped main body Butt end end face and the front surface of regular hexagon seat board be fixed as one, and the center line of truncated cone-shaped main body and regular hexagon seat board Center line be overlapped；The rear end face of first stud and the taper end end face of truncated cone-shaped main body are fixed as one, and in the first stud Heart line is overlapped with the center line of truncated cone-shaped main body；The front end face of second stud and the rear surface center of regular hexagon seat board are fixed as One, and the center line of the second stud is overlapped with the center line of regular hexagon seat board；Second stud is screwed in blind screwhole；

Spring washer is sheathed on the side of the second stud, and the both ends end face of spring washer respectively with the bottom surface of circular-shaped, concave cavity and just The rear surface of hexagon seat board contacts；Double nut is screwed in the side of the first stud；Vibration damping is particles filled in circular-shaped, concave cavity.

When work, the front end face of knife bar body is connected with cutter head, and cutter head blocks the opening of circular-shaped, concave cavity.In metal cutting In processing, equi intensity cantilever can be considered by infinite a dynamic shock absorber (each dynamic shock absorber can carry out radial vibration) structure At assembly, therefore equi intensity cantilever on the one hand can cutter flutter to bigger frequency range generate effectiveness in vibration suppression, it is another Aspect can cutter flutter to all directions generate effectiveness in vibration suppression.Double nut, which can be considered, to be attached on equi intensity cantilever and position Adjustable mass block is set, the mass block and equi intensity cantilever combine and can produce the effectiveness in vibration suppression of single dynamic shock absorber, Thus the cutter flutter of specific frequency (the bending stiffness size that the size of specific frequency depends on equi intensity cantilever) is generated Effectiveness in vibration suppression.By adjusting the front-rear position of double nut, the bending stiffness of equi intensity cantilever can be made to change, thus made Above-mentioned specific frequency changes.On the one hand vibration damping particle generates friction damping effect and impact damper system effect, on the other hand with Friction effect is generated between equi intensity cantilever, and (friction effect can not only be used for new energy consumption approach, and can be used for adjusting etc. strong Spend the damped coefficient of cantilever beam) so that (power vibration damping, friction damping, impact subtract damping mode Composite of the invention Vibration).

Based on the above process, compared with dynamic shock absorber formula Boring Bar, a kind of equi intensity cantilever of the present invention Formula composite power Boring Bar by using brand new, realize vibration damping range wide spectrum (both can to bigger frequency range and The cutter flutters of all directions generates effectiveness in vibration suppression, but can the cutter flutter to specific frequency generate effectiveness in vibration suppression), damping mode Composite (power vibration damping, friction damping, impact damper system), it is thus achieved that effectiveness in vibration suppression generalization.In other words, cutter is made to quiver The frequency of vibration and direction change with the variation of processing operating condition, and effectiveness in vibration suppression of the invention will not weaken or disappear, Therefore the scope of application of the invention is wider.

Structure of the invention is reasonable, ingenious in design, efficiently solves dynamic shock absorber formula Boring Bar in the frequency of cutter flutter The problem of effectiveness in vibration suppression weakens or disappears when rate and direction change, is suitable for metal cutting process.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is the structural schematic diagram of knife bar body in the present invention.

Fig. 3 is the structural schematic diagram of moderate strength cantilever beam and spring washer of the present invention.

Fig. 4 is the right view of Fig. 3.

In figure: 1- knife bar body, 201- regular hexagon seat board, 202- truncated cone-shaped main body, the first stud of 203-, the second spiral shell of 204- Column, 3- spring washer, 4- double nut, 5- vibration damping particle.

Specific embodiment

A kind of equi intensity cantilever formula composite power Boring Bar, including knife bar body 1, equi intensity cantilever, spring washer 3, double nut 4, vibration damping particle 5；

Wherein, the front end face of knife bar body 1 offers circular-shaped, concave cavity, and the center line weight of the center line of circular-shaped, concave cavity and knife bar body 1 It closes；The bottom surface center of circular-shaped, concave cavity offers blind screwhole, and the center line of blind screwhole is overlapped with the center line of circular-shaped, concave cavity；

The equi intensity cantilever includes regular hexagon seat board 201, truncated cone-shaped main body 202, the first stud 203, the second stud 204；The butt end end face of truncated cone-shaped main body 202 and the front surface of regular hexagon seat board 201 are fixed as one, and truncated cone-shaped main body 202 center line is overlapped with the center line of regular hexagon seat board 201；The rear end face of first stud 203 and truncated cone-shaped main body 202 Taper end end face is fixed as one, and the center line of the first stud 203 is overlapped with the center line of truncated cone-shaped main body 202；Second stud The rear surface center of 204 front end face and regular hexagon seat board 201 is fixed as one, and the center line of the second stud 204 with just The center line of hexagon seat board 201 is overlapped；Second stud 204 is screwed in blind screwhole；

Spring washer 3 is sheathed on the side of the second stud 204, and the both ends end face of spring washer 3 respectively with the bottom of circular-shaped, concave cavity The contact of the rear surface of face and regular hexagon seat board 201；Double nut 4 is screwed in the side of the first stud 203；Vibration damping particle 5 is filled out It fills in circular-shaped, concave cavity.

Double nut 4, which can be considered, to be attached on equi intensity cantilever and the adjustable mass block in position, the mass block and equal strong Degree cantilever beam, which combines, can produce the effectiveness in vibration suppression of single dynamic shock absorber, thus subtract to the cutter flutter generation of specific frequency Vibration effect.

On the one hand vibration damping particle 5 generates friction damping effect and impact damper system effect, another aspect and equi intensity cantilever Between generate friction effect so that damping mode Composite of the invention.