阅读说明：本技术 一种超精密球体变摩擦系数加工方法 (Variable friction coefficient processing method for ultra-precise sphere ) 是由 吕迅 张冬峰 于 2019-10-22 设计创作，主要内容包括：一种超精密球体的变摩擦系数加工方法,实现该方法的装置包括基台、平盘、沟槽盘、驱动装置和加载装置；沟槽盘开有设定形状的V形沟槽轨道,沟槽盘通过驱动装置驱动,平盘表面根据设定规则划分成类扇形区域,相邻扇形区域采用不同的材质,平盘弹性悬接在加载装置上,加载装置安装在基台上；所述加工方法的过程如下；将球体放入沟槽盘的沟槽轨道中,加载装置调节平盘下压,通过驱动装置带动沟槽盘做定轴匀速转动,进而带动球体在沟槽中滚动,研磨液通过平盘中心孔导入,研磨盘加工面与球体之间通过磨粒接触,在球体滚动的过程中对球体实现材料去除。本发明可适应尺寸小于1微米的微球的批量加工,设备简单、成本低且维修方便。(A variable friction coefficient processing method of an ultra-precise sphere is disclosed, wherein a device for realizing the method comprises a base station, a flat disc, a groove disc, a driving device and a loading device; the groove disc is provided with a V-shaped groove track with a set shape, the groove disc is driven by a driving device, the surface of the flat disc is divided into similar fan-shaped areas according to a set rule, the adjacent fan-shaped areas are made of different materials, the flat disc is elastically suspended on a loading device, and the loading device is installed on a base station; the processing method comprises the following steps; the ball body is placed into a groove track of the groove disc, the loading device adjusts the flat disc to press downwards, the driving device drives the groove disc to do constant-speed rotation of a fixed shaft, the ball body is driven to roll in the groove, grinding fluid is guided in through a center hole of the flat disc, a machining surface of the grinding disc is in contact with the ball body through abrasive particles, and the ball body is removed in the rolling process of the ball body. The invention can be suitable for batch processing of microspheres with the size less than 1 micron, and has the advantages of simple equipment, low cost and convenient maintenance.)

1. A variable friction coefficient processing method of an ultra-precise sphere is characterized in that a device for realizing the method comprises a base platform, a flat disc, a groove disc, a driving device and a loading device; the groove disc is provided with a V-shaped groove track with a set shape, the groove disc is driven by a driving device, the surface of the flat disc is divided into similar fan-shaped areas according to a set rule, the adjacent fan-shaped areas are made of different materials, the flat disc is elastically suspended on a loading device, and the loading device is installed on a base station; the processing method comprises the following steps; the ball body is placed into a groove track of the groove disc, the loading device adjusts the flat disc to press downwards, the driving device drives the groove disc to do constant-speed rotation of a fixed shaft, the ball body is driven to roll in the groove, grinding fluid is guided in through a center hole of the flat disc, a machining surface of the grinding disc is in contact with the ball body through abrasive particles, and the ball body is removed in the rolling process of the ball body.

2. The method of claim 1, wherein different sectors of the flat disc surface are alternatively embedded with two materials, i.e. material a and material B, combined with the grooved disc material C, and the coefficients of friction of the three materials with the alternative ball material satisfy the sliding friction between the ball and the flat disc a and B grinding surfaces.

3. The method for processing ultra-precise sphere with variable friction coefficient according to claim 1 or 2, wherein the grooved disk is driven by a driving device to rotate with a constant fixed axis.

4. The method for processing ultra-precise ball body with variable friction coefficient according to claim 1 or 2, wherein the center curve of the V-shaped groove on the surface of the groove disk is non-circular, and the size of the V-shaped groove is set according to the size of the ball body to be processed, and has a positive correlation.

Technical Field

The invention relates to the field of ultra-precise sphere processing, in particular to a variable friction coefficient processing method of an ultra-precise sphere.

Background

With the development and extension of the electromechanical field towards the direction of precision and miniaturization, the function of the ultra-precision bearing is increasingly prominent, and the bearing ball of the key component part of the ultra-precision bearing is required to be a high-precision ball.

Traditional ultraprecise spheroid processing mode is mostly concentric circles processing mode, and this kind of mode has realized the full envelope of sphere grinding orbit with the help of agitating unit, improves spheroid and roughness, but this kind of processing mode machining efficiency is low to agitating unit's stirring motion effect does not receive control, and based on certain probability, the spheroid uniformity of processing out through this kind of processing mode is poor. The other processing effects derived by the processing mode, such as the eccentric circle processing mode, are not as good as the other processing effects derived by the processing mode. The processing effect is improved like the active control processing mode of the self-turning angle, but the processing mode is not suitable for processing the microspheres with small size.

Disclosure of Invention

In order to overcome the defect that the existing ultraprecise sphere processing mode is not suitable for processing microspheres with small sizes, the invention provides an ultraprecise efficient processing method capable of meeting the requirements of spheres with various sizes including microspheres.

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

a variable friction coefficient processing method of an ultra-precise sphere is disclosed, wherein a device for realizing the method comprises a base station, a flat disc, a groove disc, a driving device and a loading device; the groove disc is provided with a V-shaped groove track with a specific shape, the groove disc is driven by a driving device, the surface of the flat disc is divided into similar fan-shaped areas according to a set rule, the adjacent fan-shaped areas are made of different materials, the flat disc is elastically suspended on a loading device, and the loading device is installed on a base station; the processing method comprises the following steps; the ball body is placed into a groove track of the groove disc, the loading device adjusts the flat disc to press downwards, the driving device drives the groove disc to do constant-speed rotation of a fixed shaft, the ball body is driven to roll in the groove, grinding fluid is guided in through a center hole of the flat disc, a machining surface of the grinding disc is in contact with the ball body through abrasive particles, and the ball body is removed in the rolling process of the ball body.

Further, the different fan-shaped regions on the surface of the flat plate are alternately embedded by two materials, the two materials are A and B, the groove plate material is C, and the friction coefficients of the three materials and the material for machining the ball body meet that the sliding friction force of the ball body and the grinding surface of the groove plate C is between the friction force of the ball body and the grinding surfaces of the flat plate A and the flat plate B.

And furthermore, the flat disc and the loading device are suspended through screws and loaded through springs.

Furthermore, the grooved disc is driven by the driving device to rotate around a fixed shaft at a constant speed.

The central curve of the V-shaped groove on the surface of the groove disc is required to be not circular, and the size of the V-shaped groove is determined according to the size of a ball to be processed.

The invention has the beneficial effects that: the method can be suitable for batch processing of microspheres with the size less than 1 mm, and has the advantages of simple equipment, low cost and convenient maintenance.

Drawings

FIG. 1 is a schematic view of an ultra-precise sphere variable friction coefficient machining apparatus as a whole;

FIG. 2 is a schematic view of a fan-shaped structure on the surface of a flat disc;

FIG. 3 is a schematic view of a trench disk trench structure;

in the figure 1-loading device, 2-screw, 3-spring, 4-flat disc, 5-sphere, 6-grooved disc, 7-base, 8-control device, 9-drive device, 61-groove.

Detailed Description

The method for processing ultra-precise spheres with variable friction coefficients according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a variable friction coefficient processing method for ultra-precise spheres, wherein the device for realizing the method comprises a flat disc 4, a base 7, a groove disc 6, a driving device 9, a control device 8 and a loading device 1.

The groove disc 6 is provided with a V-shaped groove track with a specific shape, the groove disc 6 is driven by a driving device 9, the surface of the flat disc 4 is divided into fan-shaped areas according to a set rule, the adjacent fan-shaped areas are made of different materials, the flat disc 4 is elastically suspended on the loading device 1, and the loading device 1 is installed on the base platform 7.

Further, the different fan-shaped regions in flat dish 4 surface are inlayed by two kinds of materials in turn and are formed, and two kinds of materials are material A and B to close the fluted disc material and be material C, and these three kinds of materials satisfy the sliding friction power that spheroid and fluted disc C abrasive surface ground with the friction coefficient of instead processing spheroid material between the frictional force of spheroid and flat dish A abrasive surface and B abrasive surface.

Still further, the flat plate 4 is suspended from the loading device 1 by a screw 2 and loaded by a spring 3.

Furthermore, the grooved disc 6 is driven by the driving device 9 to rotate with a constant fixed axis.

The central curve of the V-shaped groove on the surface of the groove disk 6 is required to be not circular, and the size of the V-shaped groove is determined according to the size of a ball to be processed.

During operation, the ball body 5 is placed into a groove 61 track of a groove disc, the loading device 1 adjusts the flat disc 4 to press downwards, the driving device 8 drives the groove disc 6 to rotate at a constant speed through a fixed shaft, the ball body 5 is further driven to roll in the groove 61, grinding fluid is led in through a central hole of the flat disc 4, a machining surface of the grinding disc is in contact with the ball body 5 through abrasive particles, material removal is achieved on the ball body 5 in the rolling process of the ball body 5, the sphericity is continuously improved, the surface of the flat disc 4 is provided with a fan-shaped area distribution structure with different friction coefficients, the change of a groove curve 61 is combined, the grinding area of the surface of the ball body is changed constantly, each period is different, the full envelope of the grinding track of the spherical surface can be met, the machining efficiency is high, but the ball body 5 is always in contact with the grinding disc, and the machined ball body is.