阅读说明：本技术 多组件串联结构精密调测方法及平台 (Multi-component series structure precision adjusting and measuring method and platform ) 是由 姚锐 齐明 冯洪伟 李建普 刘景辉 高岩 田津 叶壮 颜文瀚 于 2021-07-23 设计创作，主要内容包括：多组件串联结构精密调测方法及平台,所述的多组件串联结构包括组件以及旋转轴；各组件通过中心旋转轴实现串联,多组件串联结构的外部装配外壳；包括如下步骤：S1、将旋转轴安装在转台上,外壳固定在外壳安装工装上；所述的转台与外壳安装工装之间无运动干涉；调整外壳安装工装,粗调旋转轴与外壳之间的径向与轴向相对距离；S2、按照顺序依次向旋转轴上安装组件,每次安装过程中均通过转台转动,调整旋转轴以及安装在旋转轴上的组件与外壳之间的相对角度；同时根据测量的旋转轴与外壳之间的径向与轴向相对距离,调整外壳安装工装实现精密调整,使外壳与旋转轴之间的相位位置满足要求。(The multi-component series structure comprises components and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the method comprises the following steps: s1, mounting the rotating shaft on the turntable, and fixing the shell on the shell mounting tool; no motion interference exists between the rotary table and the shell installation tool; adjusting a shell mounting tool, and roughly adjusting the radial and axial relative distance between a rotating shaft and a shell; s2, sequentially mounting the components on the rotating shaft, wherein the rotating shaft and the components mounted on the rotating shaft are adjusted in relative angle with the shell through the rotation of the turntable in each mounting process; and meanwhile, the shell mounting tool is adjusted to realize precise adjustment according to the measured radial and axial relative distance between the rotating shaft and the shell, so that the phase position between the shell and the rotating shaft meets the requirement.)

1. The method for precisely adjusting and measuring the multi-component series structure comprises the steps that the multi-component series structure comprises components and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the method is characterized by comprising the following steps:

s1, mounting the rotating shaft on the turntable, and fixing the shell on the shell mounting tool; no motion interference exists between the rotary table and the shell installation tool; adjusting a shell mounting tool, and roughly adjusting the radial and axial relative distance between a rotating shaft and a shell;

s2, sequentially mounting the components on the rotating shaft, wherein the rotating shaft and the components mounted on the rotating shaft are adjusted in relative angle with the shell through the rotation of the turntable in each mounting process; and meanwhile, the shell mounting tool is adjusted to realize precise adjustment according to the measured radial and axial relative distance between the rotating shaft and the shell, so that the phase position between the shell and the rotating shaft meets the requirement.

2. The method of claim 1, wherein: the device also comprises a mechanical measuring arm, and when the shell installation tool is adjusted, the radial and axial relative distance between the rotating shaft and the shell is measured; measuring the flatness and the dimension chain of the component by a mechanical measuring arm in the process of mounting the component; the size chain is a radial gap and an axial gap between the components, and the height difference between different components is converted through the size chain; and further judging whether the installation meets the requirements or not through the flatness and the height difference between the components, and if not, returning to S2 to install the components again.

3. The method of claim 1, wherein: the radial and axial relative distances between the rotating shaft and the shell are measured by mounting at least two sets of displacement sensors on the shell.

4. The method of claim 3, wherein: the displacement sensor is arranged on the shell, the probe of the sensor faces the rotating shaft, and the distance between the probe and the rotating shaft is not more than 2 mm; two sets of sensors are installed respectively on the shell not co-altitude, measure the distance between rotation axis and the shell through displacement sensor, and the axial contained angle between rotation axis and the shell is converted through the numerical value of two sets of sensors, guarantees coaxially between rotation axis and the shell through adjustment shell installation frock.

5. The method of claim 1, wherein: the lower end of the shell installation tool is supported by at least three support legs, and the adjustment of the shell installation tool is realized by the support legs.

6. The method of claim 5, wherein: the long cylindrical part of the three support legs is provided with external threads, the mounting holes corresponding to the shell mounting tool are unthreaded holes, when the shell mounting tool is mounted on the support legs, the upper surface and the lower surface of the shell mounting tool are respectively provided with a nut, and the height and the flatness of the shell mounting tool are adjusted by adjusting the nuts.

7. The method of claim 5, wherein: the radial distance between the housing and the rotating shaft is adjusted by horizontally moving the bases of the three legs.

8. The method of claim 5, wherein: the assembly is a stator and rotor combined assembly.

9. The multi-component series structure precision adjusting and measuring platform comprises components and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the method is characterized in that: the device comprises a shell mounting tool, a rotary table and a displacement sensor;

the shell mounting tool is used for fixing the shell, the rotary table is used for mounting the rotary shaft, and the rotary table is mounted on the shell mounting tool and does not have movement interference with the shell mounting tool;

the radial and axial relative distance between the rotating shaft and the shell can be roughly adjusted by adjusting the shell mounting tool; in the process of serially mounting the components, the rotating table rotates to adjust the rotating shaft and the relative angle between the components mounted on the rotating shaft and the shell; the displacement sensor is arranged on the shell and used for measuring the radial and axial relative distance between the rotating shaft and the shell in the process of mounting the assembly, and the shell mounting tool is adjusted according to the measured relative distance to enable the phase position between the shell and the rotating shaft to meet the requirement.

10. The commissioning platform of claim 9, wherein: the mechanical measuring arm is used for measuring the flatness of the component and the dimension chain in the component mounting process; the size chain is a radial gap and an axial gap between the components, and the height difference between the components can be converted through the size chain; and further judging whether the installation meets the requirements or not through the flatness and the height difference between the assemblies, and if not, reinstalling the assemblies.

Technical Field

The invention relates to a method and a platform suitable for precise assembly and adjustment of a large-scale multi-component series mechanism, which can realize high-precision measurement and adjustment of large-scale parts in the radial direction and the axial direction and have the characteristics of high precision, easy operation and the like.

Background

The magnetic suspension rotary joint is a non-contact supporting outer rotor rotating mechanism which is connected with a satellite platform cabin and a load cabin of a certain model, can meet the urgent requirements of ultra-wide high-time and spatial resolution earth observation satellites, vertical rail scanning along rail splicing rotary imaging, and can realize ultra-static suspension, ultra-precise pointing and ultra-stable rotary scanning driving of rotary imaging loads. The magnetic suspension rotary joint has the characteristics of large component size, large weight, large quantity, multiple and long matching surfaces, small matching clearance and high assembly precision requirement.

The existing assembly technology is mostly a process of 'adjusting and reassembling firstly', and in the assembly process, the shaft component and the hole component move relatively, so that the loss of the adjustment precision can be caused inevitably, and the precision of a final product is not facilitated. In the invention, the rotating shaft is arranged in the shell and then adjusted, so that the subsequent moving process is omitted.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the defects of the prior art are overcome, and a method and a platform for precisely adjusting and measuring a multi-component series structure are provided.

The technical scheme of the invention is as follows: the method for precisely adjusting and measuring the multi-component series structure comprises the steps that the multi-component series structure comprises components and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the method comprises the following steps:

s1, mounting the rotating shaft on the turntable, and fixing the shell on the shell mounting tool; no motion interference exists between the rotary table and the shell installation tool; adjusting a shell mounting tool, and roughly adjusting the radial and axial relative distance between a rotating shaft and a shell;

s2, sequentially mounting the components on the rotating shaft, wherein the rotating shaft and the components mounted on the rotating shaft are adjusted in relative angle with the shell through the rotation of the turntable in each mounting process; and meanwhile, the shell mounting tool is adjusted to realize precise adjustment according to the measured radial and axial relative distance between the rotating shaft and the shell, so that the phase position between the shell and the rotating shaft meets the requirement.

The device further comprises a mechanical measuring arm, and when the shell installation tool is adjusted, the radial and axial relative distance between the rotating shaft and the shell is measured; measuring the flatness and the dimension chain of the component by a mechanical measuring arm in the process of mounting the component; the size chain is a radial gap and an axial gap between the components, and the height difference between different components is converted through the size chain; and further judging whether the installation meets the requirements or not through the flatness and the height difference between the components, and if not, returning to S2 to install the components again.

Further, the radial and axial relative distances between the rotating shaft and the housing are measured by mounting at least two sets of displacement sensors on the housing.

Furthermore, the displacement sensor is arranged on the shell, the probe of the sensor faces the rotating shaft, and the distance between the probe and the rotating shaft is not more than 2 mm; two sets of sensors are installed respectively on the shell not co-altitude, measure the distance between rotation axis and the shell through displacement sensor, and the axial contained angle between rotation axis and the shell is converted through the numerical value of two sets of sensors, guarantees coaxially between rotation axis and the shell through adjustment shell installation frock.

Further, the lower end of the shell installation tool is supported by at least three support legs, and the adjustment of the shell installation tool is realized by the support legs.

Furthermore, the long cylindrical parts of the three support legs are provided with external threads, the mounting holes corresponding to the shell mounting tool are unthreaded holes, when the shell mounting tool is mounted on the support legs, the upper surface and the lower surface of the shell mounting tool are respectively provided with a nut, and the height and the flatness of the shell mounting tool are adjusted by adjusting the nuts.

Further, by horizontally moving the bases of the three legs, the radial distance between the housing and the rotation shaft is adjusted.

Further, the assembly is a stator and rotor combined assembly.

The multi-component series structure precision adjusting and measuring platform comprises components and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the platform comprises a shell mounting tool, a rotary table and a displacement sensor;

the shell mounting tool is used for fixing the shell, the rotary table is used for mounting the rotary shaft, and the rotary table is mounted on the shell mounting tool and does not have movement interference with the shell mounting tool;

the radial and axial relative distance between the rotating shaft and the shell can be roughly adjusted by adjusting the shell mounting tool; in the process of serially mounting the components, the rotating table rotates to adjust the rotating shaft and the relative angle between the components mounted on the rotating shaft and the shell; the displacement sensor is arranged on the shell and used for measuring the radial and axial relative distance between the rotating shaft and the shell in the process of mounting the assembly, and the shell mounting tool is adjusted according to the measured relative distance to enable the phase position between the shell and the rotating shaft to meet the requirement.

Further, the platform also comprises a mechanical measuring arm, wherein the mechanical measuring arm is used for measuring the flatness and the dimension chain of the component in the component mounting process; the size chain is a radial gap and an axial gap between the components, and the height difference between the components can be converted through the size chain; and further judging whether the installation meets the requirements or not through the flatness and the height difference between the assemblies, and if not, reinstalling the assemblies.

Compared with the prior art, the invention has the beneficial effects that:

the magnetic suspension rotary joint has the characteristics of large component size, large weight, large quantity, multiple and long matching surfaces, small matching clearance and high assembling precision requirement, and in order to realize high-precision assembling of the joint, a precision adjusting and measuring method and a precision adjusting and measuring platform meeting the requirement of a multi-component series structure need to be developed, so that the requirements of size measurement and precision adjustment in the assembling process are met. The invention relates to a method and a platform suitable for precise assembly and adjustment of a large-scale multi-component series mechanism. The invention can realize high-precision measurement and adjustment of radial and axial directions of large-size parts, and has the characteristics of high precision, easy operation and the like.

Drawings

FIG. 1 is a schematic illustration of a platform according to the present invention;

FIG. 2 is a cross-sectional view of a platform of the present invention.

Detailed Description

The invention is described in detail below with reference to the accompanying figures 1-2 and examples.

The invention relates to a multi-component series structure precision adjusting and measuring method, wherein the multi-component series structure comprises components (multidimensional fixed rotor combined components) and a rotating shaft; the components are connected in series through a central rotating shaft, and a shell is assembled outside the multi-component series structure; the method comprises the following steps:

s1, mounting the rotating shaft on the turntable, and fixing the shell on the shell mounting tool; no motion interference exists between the rotary table and the shell installation tool; adjusting a shell mounting tool, and roughly adjusting the radial and axial relative distance between a rotating shaft and a shell;

s2, sequentially mounting the components on the rotating shaft, wherein the rotating shaft and the components mounted on the rotating shaft are adjusted in relative angle with the shell through the rotation of the turntable in each mounting process; and meanwhile, the shell mounting tool is adjusted to realize precise adjustment according to the measured radial and axial relative distance between the rotating shaft and the shell, so that the phase position between the shell and the rotating shaft meets the requirement.

In a preferred embodiment, the invention further comprises a mechanical measuring arm, and when the shell mounting tool is adjusted, the radial and axial relative distance between the rotating shaft and the shell is measured; measuring the flatness and the dimension chain of the component by a mechanical measuring arm in the process of mounting the component; the size chain is a radial gap and an axial gap between the components, and the height difference between different components is converted through the size chain; and further judging whether the installation meets the requirements or not through the flatness and the height difference between the components, and if not, returning to S2 to install the components again.

The radial and axial relative distances between the rotating shaft and the shell are measured by at least two sets of displacement sensors mounted on the shell. The probe of the sensor faces the rotating shaft, and the distance between the probe and the rotating shaft is not more than 2 mm; the sensors are respectively installed on different heights of the shell, the distance between the rotating shaft and the shell is measured through the displacement sensors, the axial included angle between the rotating shaft and the shell is converted through the numerical values of the two groups of sensors, and the rotating shaft and the shell are guaranteed to be coaxial through adjusting the shell installation tool.

Examples

The magnetic suspension joint product is not a simple shaft/hole assembly, but a plurality of stator and rotor combined components are required to be assembled in series between a shell and a rotating shaft after the shell and the rotating shaft are assembled, and the final assembled product is a multi-layer structure of the shell/stator and rotor combined/rotating shaft.

The embodiment provides a precision adjusting and measuring platform aiming at the assembly requirement of a magnetic suspension rotary joint, as shown in fig. 1, a large-diameter shell installation tool is used, a plurality of adjustable support legs are arranged on the circumference, and the support legs are connected and fixed with an installation tool base plate through nuts and screws, so that a heavy component can be fixed, and radial and axial precision adjustment can be realized. Specifically, the long cylindrical part of the support leg is provided with an external thread, the mounting hole corresponding to the shell mounting tool is a unthreaded hole, when the shell mounting tool is mounted on the support leg, the upper surface and the lower surface of the shell mounting tool are respectively provided with a nut, and the height and the flatness of the shell mounting tool are adjusted by adjusting the nuts. The radial distance between the housing and the rotating shaft is adjusted by horizontally moving the bases of the three legs.

As can be seen from fig. 2, the rotary shaft is fixed to the turntable, and the housing is fixed to the housing mounting tool. The rotary table and the shell installation tool are relatively independent. The rotary table can rotate for 360 degrees, and the relative angle between the rotary shaft, the component arranged on the rotary shaft and the shell is adjusted through the rotary table. According to the invention, the displacement sensor is arranged on the shell, after the rotating shaft and the rotary table are installed, the shell and the shell installation tool are assembled, the radial and axial relative distance between the rotating shaft and the shell is roughly adjusted by adjusting the shell installation tool, then the component is arranged on the rotating shaft, the relative position between the rotating shaft and the shell can be measured in real time by the displacement sensor in the whole component assembly process, and the relative position between the rotating shaft and the shell is adjusted by adjusting the shell installation tool, so that the subsequent assembly precision is ensured. And in the assembly process, a mechanical measuring arm is used for measuring the flatness and the size chain of each component, and the flatness and the size chain of each component are measured, specifically, the flatness of each component after being installed in place, the height difference among the components obtained by conversion according to the size chain and the like are included.

For example, the following steps are carried out:

the assemblies 1, 2 and 3 are stator and rotor combined assemblies, the stator is assembled on the shell in principle during assembly, the rotor is assembled on the rotating shaft, and the stator and the rotor of each assembly are ensured to be installed in place through adjustment of a gasket arranged on the shell between the assemblies. After the assembly 1 is installed on the rotating shaft and the shell, whether the assembly 1 is installed in place or not can be confirmed by respectively measuring the relative distance between the stator and the rotor of the assembly 1 and the upper end surface of the shell or the upper end surface of the central shaft and the flatness of the stator and rotor installation surface, and if the assembly does not meet the design requirement, the assembly needs to be reassembled to meet the design requirement. Then, the distance from the stator mounting surface of the module 1 to the upper end surface of the shell is measured to be L1, and the distance from the rotor mounting surface of the module 1 to the upper end surface of the shell is measured to be L2, so that the absolute value of L1-L2 is the distance between the stator mounting surface and the rotor mounting surface of the module 1. The dimensions of the spacer can be determined by this dimension, and by trimming the spacer to a size that meets the design requirements, the spacer is mounted to the housing and the assembly 2 is continued on the housing and the rotating shaft.

The invention is suitable for the size measurement of a large-size range and a small measurement gap. (general height gauges and other measuring tools cannot be realized), and the method can meet the high-precision requirement of the whole assembly process.

The invention has not been described in detail in part in the common general knowledge of a person skilled in the art.