阅读说明：本技术 一种用于超精密车削的可调吸附直径真空吸盘 (Vacuum chuck with adjustable adsorption diameter for ultra-precise turning ) 是由 张强 胡振江 赵学森 张俊杰 孙涛 于 2021-01-15 设计创作，主要内容包括：本发明提出一种用于超精密车削的可调吸附直径真空吸盘,该吸盘的真空导气管通过旋转接头与静压主轴的一端连接,真空吸盘主体通过连接螺栓与静压主轴的另一端连接,真空吸盘主体与静压主轴的连接处设置有O型密封圈,真空吸盘主体内设置有调节螺塞,通过旋拧调节螺塞来堵住真空吸盘主体上的吸孔,进而改变真空吸盘主体的吸真空面积。解决了现有技术因高精度薄片类零件刚度弱,超精密车削时一般采用真空吸盘吸附方式装夹,常规真空吸盘无法根据零件直径大小调节吸附范围的技术问题。本发明通过调节螺塞调节改变真空区域面积从而可改变可吸附工件直径范围,使吸附尺寸不单一,适配性能更强,减小安装误差。(The invention provides an adjustable adsorption diameter vacuum chuck for ultra-precise turning, wherein a vacuum air duct of the chuck is connected with one end of a static pressure main shaft through a rotary joint, a vacuum chuck main body is connected with the other end of the static pressure main shaft through a connecting bolt, an O-shaped sealing ring is arranged at the joint of the vacuum chuck main body and the static pressure main shaft, an adjusting screw plug is arranged in the vacuum chuck main body, and a suction hole in the vacuum chuck main body is blocked by screwing the adjusting screw plug, so that the vacuum suction area of the vacuum chuck main body is changed. The technical problem that in the prior art, due to the fact that the rigidity of high-precision thin-sheet parts is weak, clamping is generally achieved in a vacuum chuck adsorption mode during ultra-precision turning, and the adsorption range cannot be adjusted according to the diameter of the parts through a conventional vacuum chuck is solved. The invention changes the area of the vacuum area by adjusting the screw plug, thereby changing the diameter range of the adsorbable workpiece, leading the adsorbable size to be not single, leading the adaptability to be stronger and reducing the installation error.)

1. An adjustable adsorption diameter vacuum chuck for ultra-precise turning is characterized by comprising a vacuum air duct (1), a rotary joint (2), a static pressure main shaft (3), a connecting bolt (4), an O-shaped sealing ring (5), an adjusting screw plug (6) and a vacuum chuck main body (7), the vacuum air duct (1) is connected with one end of the static pressure main shaft (3) through a rotary joint (2), the vacuum chuck main body (7) is connected with the other end of the static pressure main shaft (3) through a connecting bolt (4), an O-shaped sealing ring (5) is arranged at the joint of the vacuum sucker main body (7) and the static pressure main shaft (3), an adjusting screw plug (6) is arranged in the vacuum sucker main body (7), the suction hole on the vacuum sucker main body (7) is plugged by screwing the adjusting screw plug (6), so that the vacuum suction area of the vacuum sucker main body (7) is changed.

2. The vacuum chuck with adjustable adsorption diameter for ultra-precise turning according to claim 1, characterized in that the end surface of the vacuum chuck main body (7) is provided with a plurality of annular grooves, and 3 small holes with 2mm diameter are uniformly distributed in the circumferential direction of each annular groove.

3. The vacuum chuck with adjustable adsorption diameter for ultra-precise turning according to claim 2, characterized in that three fan-shaped vacuum areas are uniformly distributed in the circumferential direction of the vacuum chuck main body (7), and three vacuum air passages on the end surface of the vacuum chuck main body (7) correspond to the three vacuum areas.

4. Adjustable clamping diameter vacuum chuck for ultra-precision turning according to claim 1, characterized by that the side wall of the vacuum chuck body (7) is circumferentially provided with three through holes, each adjusting screw plug (6) being provided in a through hole.

5. The vacuum chuck with adjustable adsorption diameter for ultra-precise turning according to claim 1, characterized in that when the vacuum starts, the annular groove on the end surface of the chuck generates negative pressure, and the adjusting screw plug (6) can change the distance of the vacuum air channel so as to change the diameter of the generated annular groove.

6. The adjustable suction diameter vacuum chuck for ultra-precise turning according to claim 5, characterized in that the suction diameter of the vacuum chuck body (7) becomes smaller when the adjusting screw plug (6) is screwed in clockwise, and the suction diameter of the vacuum chuck body (7) becomes larger when the adjusting screw plug (6) is screwed out counterclockwise.

7. The vacuum chuck with adjustable adsorption diameter for ultra-precise turning according to claim 1, characterized in that the material of the adjusting screw plug (6) is polytetrafluoroethylene.

8. The vacuum chuck with adjustable adsorption diameter for ultra-precise turning according to claim 1, characterized in that the outer diameter of the adjusting screw plug (6) is processed with a fine thread seal head to achieve a sealing effect.

Technical Field

The invention relates to a design of an adjustable adsorption diameter vacuum chuck for ultra-precise turning, and belongs to the technical field of ultra-precise turning devices.

Background

Because the rigidity of the high-precision thin-sheet part is weak, the high-precision thin-sheet part is clamped in a vacuum chuck adsorption mode generally during ultra-precision turning, and the adsorption range of the conventional vacuum chuck cannot be adjusted according to the diameter of the part, the vacuum chuck for adjusting the adsorption range according to the diameters of different thin-sheet parts needs to be designed so as to ensure the surface shape precision of the part.

Disclosure of Invention

The invention provides an adsorption diameter adjustable vacuum chuck for ultra-precision turning, which aims to solve the technical problems that in the prior art, because the rigidity of high-precision thin-sheet parts is weak, the high-precision thin-sheet parts are generally clamped in a vacuum chuck adsorption mode during ultra-precision turning, and the adsorption range of a conventional vacuum chuck cannot be adjusted according to the diameter of the parts.

The invention provides an adsorption diameter adjustable vacuum chuck for ultra-precise turning, which comprises a vacuum air guide pipe, a rotary joint, a static pressure main shaft, a connecting bolt, an O-shaped sealing ring, an adjusting screw plug and a vacuum chuck main body, wherein the vacuum air guide pipe is connected with one end of the static pressure main shaft through the rotary joint, the vacuum chuck main body is connected with the other end of the static pressure main shaft through the connecting bolt, the O-shaped sealing ring is arranged at the joint of the vacuum chuck main body and the static pressure main shaft, the adjusting screw plug is arranged in the vacuum chuck main body, and a suction hole in the vacuum chuck main body is blocked by screwing the adjusting screw plug, so that the vacuum suction area of the vacuum chuck main body is.

Preferably, the end face of the vacuum chuck main body is provided with a plurality of annular grooves, and small holes with the diameter of 2mm are uniformly distributed in the circumferential direction of each circle of annular groove.

Preferably, three fan-shaped vacuum areas are uniformly distributed in the circumferential direction of the vacuum chuck main body, and three vacuum air passages on the end face of the vacuum chuck main body correspond to the three vacuum areas.

Preferably, when the vacuum is started, the suction cup end face annular groove generates negative pressure, and the adjusting screw plug can change the distance of the vacuum air channel so as to change the diameter of the generated vacuum annular groove.

Preferably, the side wall of the vacuum chuck main body is circumferentially provided with three through holes, and each adjusting screw plug is arranged in each through hole.

Preferably, when the adjusting screw plug is screwed in clockwise, the suction diameter of the vacuum sucker main body becomes smaller, and when the adjusting screw plug is screwed out anticlockwise, the suction diameter of the vacuum sucker main body becomes larger.

Preferably, the material of the adjusting screw plug is polytetrafluoroethylene.

Preferably, the outer diameter of the adjusting screw plug is processed into a fine thread end socket so as to achieve a sealing effect.

The vacuum chuck with the adjustable adsorption diameter for ultra-precise turning has the beneficial effects that: the area of the vacuum area is changed by adjusting the screw plug, so that the diameter range of the adsorbable workpiece can be changed, the adsorption size is not single, the adaptability is stronger, and the installation error is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural diagram of an adjustable suction diameter vacuum chuck for ultra-precision turning according to the present invention;

FIG. 2 is a schematic end view of a vacuum chuck body according to the present invention;

FIG. 3 is a perspective view of the vacuum chuck body of the present invention;

FIG. 4 is a perspective view of the vacuum chuck body of the present invention;

FIG. 5 is an enlarged fragmentary view of the tip of the adjusting screw plug of the present invention;

FIG. 6 is a schematic structural view of the suction tool for clockwise screwing of the adjusting screw plug according to the present invention;

FIG. 7 is a schematic structural view of a suction tool for adjusting the counterclockwise rotation of a screw plug according to the present invention;

the vacuum suction cup comprises a vacuum air guide pipe 1, a rotary joint 2, a static pressure main shaft 3, a connecting bolt 4, an O-shaped sealing ring 5, an adjusting screw plug 6 and a vacuum suction cup main body 7.

Detailed Description

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 7. This embodiment be used for adjustable adsorption diameter vacuum chuck of ultra-precise turning, including vacuum air duct 1, rotary joint 2, static pressure main shaft 3, connecting bolt 4, O type sealing washer 5, regulation plug screw 6 and vacuum chuck main part 7, vacuum air duct 1 is connected with static pressure main shaft 3's one end through rotary joint 2, vacuum chuck main part 7 is connected with static pressure main shaft 3's the other end through connecting bolt 4, vacuum chuck main part 7 is provided with O type sealing washer 5 with static pressure main shaft 3's junction, be provided with regulation plug screw 6 in the vacuum chuck main part 7, adjust the hole of inhaling on plug screw 6 stops up vacuum chuck main part 7 through revolving, and then change vacuum chuck main part 7's vacuum area of inhaling.

The terminal surface of vacuum chuck main part 7 is provided with a plurality of ring ditches, 3 diameter 2 mm's apertures of circumference equipartition of every round ring ditch, three sectorial vacuum region of circumferential evenly distributed in vacuum chuck main part 7, the three vacuum air flue of vacuum chuck main part 7 terminal surface corresponds three vacuum region.

Firstly, the vacuum sucker body 7 is additionally provided with an O-shaped sealing ring 5 and is connected with the static pressure main shaft 3 through a connecting bolt 4, and then the rotary joint 2 is used for connecting the static pressure main shaft 3 with the vacuum air duct 1.

The adjusting screw plug 6 is made of polytetrafluoroethylene. And a fine thread seal head is processed on the outer diameter of the adjusting screw plug 6 to achieve the sealing effect. The fine thread of the adjusting screw plug 6 can block the small hole of 2mm of each circle of the circular groove of the vacuum sucker main body 7. The lateral wall circumference of vacuum chuck main part 7 is provided with three through-hole, and every regulation plug screw 6 sets up in the through-hole, adjust plug screw 6 and stretch into in the through-hole through the hexagon socket head wrench and rotate the regulation.

When the vacuum starts the sucking disc terminal surface ring ditch produces the negative pressure this moment, adjust vacuum chuck main part 7, adjust plug screw 6 through the 2mm aperture of plugging up every round ring ditch of vacuum chuck main part 7, can change the diameter that produces the vacuum ring ditch, when adjusting plug screw 6 clockwise precession, the regional diameter of fan-shaped vacuum diminishes, adsorbable thin slice class part diameter diminishes, when adjusting plug screw 6 anticlockwise screw out, the regional diameter grow of fan-shaped vacuum, adsorbable thin slice class part diameter grow.

The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.