Motor shaft assembly device and control method thereof

Abstract

Disclosed are a motor shaft assembly device and a control method thereof. The motor shaft assembly device comprises a first function mechanism and a first temperature control mechanism, the first function mechanism is configured to clamp a sheath, and the first temperature control mechanism is configured to adjust the temperature of the sheath; a second function mechanism configured to clamp a first end shaft assembly; a third function mechanism configured to clamp a second end shaft, the first function mechanism, the second function mechanism and the third function mechanism are further configured to drive the sheath, the first end shaft assembly and the second end shaft to be assembled together; and a control system electrically connected with the first function mechanism, the first temperature control mechanism, the second function mechanism and the third function mechanism. The motor shaft assembly device adopts an automatic control mode to ensure that the actual expansion and contraction size of the sheath is a first preset expansion and contraction size in real time, thereby not only ensuring the assembly gap and coaxiality between the sheath and the first end shaft assembly and the second end shaft, but also improving the assembly success rate.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of mechanical assembly technology, and particularly to a motor shaft assembly device and its control method. Background Technology

[0002] The permanent magnet synchronous motor shaft is composed of a first end shaft assembly, a second end shaft, a sheath, and other rotor accessories. The first end shaft assembly includes the first end shaft and magnets. Currently, the industry often uses a heating furnace to heat the sheath separately to expand it. Then, the sheath is moved to the second end shaft and aligned manually. Finally, the sheath is fitted onto the first end shaft and magnets by its own weight, completing the assembly of the magnets, first end shaft, second end shaft, and sheath. This process relies on manual labor, which results in low coaxiality between the magnets, first end shaft, second end shaft, and sheath during heat fitting. Furthermore, it is impossible to guarantee the assembly clearance between the sheath and the magnets, first end shaft, and second end shaft, leading to a high assembly failure rate. Summary of the Invention

[0003] The main objective of this invention is to provide a motor shaft assembly device that can solve the problems of low coaxiality between the magnet, the first end shaft, the second end shaft, and the sheath during heat fitting, as well as the inability to guarantee the assembly clearance between the sheath and the magnet, the first end shaft, and the second end shaft, resulting in a high assembly failure rate.

[0004] This invention also provides a control method for a motor shaft assembly device.

[0005] The motor shaft assembly device provided in this embodiment of the invention includes: a first functional mechanism and a first temperature control mechanism, wherein the first functional mechanism is configured to clamp a protective sleeve, and the first temperature control mechanism is configured to adjust the temperature of the protective sleeve; a second functional mechanism is configured to clamp a first end shaft assembly; a third functional mechanism is configured to clamp a second end shaft, and the first, second, and third functional mechanisms are further configured to drive the protective sleeve, the first end shaft assembly, and the second end shaft to be assembled together; and a control system electrically connected to the first, first, second, and third functional mechanisms, and configured to adjust the actual expansion and contraction size of the protective sleeve to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism, and then control the first, second, and third functional mechanisms to assemble the protective sleeve, the first end shaft assembly, and the second end shaft together.

[0006] In some exemplary embodiments, the motor shaft assembly device further includes: a second temperature control mechanism configured to adjust the temperature of the first end shaft assembly; wherein the control system is also electrically connected to the second temperature control mechanism and is further configured to adjust the actual expansion and contraction size of the first end shaft assembly to a second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism.

[0007] In some exemplary embodiments, the motor shaft assembly device further includes a third temperature control mechanism configured to adjust the temperature of the second end shaft; wherein the control system is also electrically connected to the third temperature control mechanism and is further configured to adjust the actual expansion and contraction size of the second end shaft to a third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism.

[0008] In some exemplary embodiments, the motor shaft assembly device further includes a second temperature control mechanism and a third temperature control mechanism; the control system includes: a size detection module configured to detect the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft; and a control module electrically connected to the first functional mechanism, the first temperature control mechanism, the second functional mechanism, the second temperature control mechanism, the third functional mechanism, the third temperature control mechanism, and the size detection module, and configured to control the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism to apply a first preset output temperature, a second preset output temperature, and a third preset output temperature to the sheath, the first end shaft assembly, and the second end shaft respectively, according to the temperature-size thermal expansion and contraction curve. The first end shaft assembly and the second end shaft are temperature-adjusted. Then, based on the difference between the actual expansion and contraction size of the sheath and the first preset expansion and contraction size, the difference between the actual expansion and contraction size of the first end shaft assembly and the second preset expansion and contraction size, and the difference between the actual expansion and contraction size of the second end shaft and the third preset expansion and contraction size, and in conjunction with the temperature variable-size difference lookup table, the output temperatures of the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are respectively adjusted to the first corrected output temperature, the second corrected output temperature, and the third corrected output temperature, so that the actual expansion and contraction sizes of the sheath, the first end shaft assembly, and the second end shaft are respectively adjusted to the first preset expansion and contraction size, the second preset expansion and contraction size, and the third preset expansion and contraction size.

[0009] In some exemplary embodiments, the control module is further configured to correct the temperature-size thermal expansion curve based on the correlation between the first corrected output temperature and the first preset expansion / contraction size, the correlation between the second corrected output temperature and the second preset expansion / contraction size, and the correlation between the third corrected output temperature and the third preset expansion / contraction size.

[0010] In some exemplary embodiments, the size detection module includes a first size detection module, a second size detection module, and a third size detection module, wherein the first size detection module, the second size detection module, and the third size detection module are configured to detect the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft, respectively.

[0011] In some exemplary embodiments, the first functional mechanism, the second functional mechanism, and the third functional mechanism each include: a multi-dimensional motion module; and a clamping module disposed on the multi-dimensional motion module, the multi-dimensional motion module being configured to drive the clamping module to move; wherein the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are located on the same side or different sides of the plurality of multi-dimensional motion modules.

[0012] The control method for the motor shaft assembly device provided in this embodiment of the invention includes:

[0013] By controlling the output temperature of the first temperature control mechanism, the actual expansion and contraction size of the sheath is adjusted to the first preset expansion and contraction size. Then, the first functional mechanism, the second functional mechanism, and the third functional mechanism are controlled to assemble the sheath, the first end shaft assembly, and the second end shaft together.

[0014] In some exemplary embodiments, prior to the step of then controlling the first functional mechanism, the second functional mechanism, and the third functional mechanism to assemble the sheath, the first end shaft assembly, and the second end shaft together, the control method further includes:

[0015] By controlling the output temperatures of the second and third temperature control mechanisms, the actual expansion and contraction dimensions of the first end shaft assembly and the second end shaft are respectively adjusted to the second preset expansion and contraction dimensions and the third preset expansion and contraction dimensions.

[0016] In some exemplary embodiments, the steps of adjusting the actual expansion and contraction size of the sheath to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism and adjusting the actual expansion and contraction sizes of the first end shaft assembly and the second end shaft to a second preset expansion and contraction size and a third preset expansion and contraction size, respectively, by controlling the output temperatures of the second temperature control mechanism and the third temperature control mechanism include:

[0017] According to the thermal expansion and contraction curve of temperature and size, the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism respectively adjust the temperature of the sheath, the first end shaft assembly, and the second end shaft at the first preset output temperature, the second preset output temperature, and the third preset output temperature;

[0018] Obtain the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft;

[0019] Based on the difference between the actual expansion and contraction size of the sheath and the first preset expansion and contraction size, the difference between the actual expansion and contraction size of the first end shaft assembly and the second preset expansion and contraction size, and the difference between the actual expansion and contraction size of the second end shaft and the third preset expansion and contraction size, and in conjunction with the temperature variable-size difference lookup table, the output temperatures of the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are adjusted to the first corrected output temperature, the second corrected output temperature, and the third corrected output temperature, respectively, so that the actual expansion and contraction sizes of the sheath, the first end shaft assembly, and the second end shaft are adjusted to the first preset expansion and contraction size, the second preset expansion and contraction size, and the third preset expansion and contraction size, respectively.

[0020] In some exemplary embodiments, after the steps of adjusting the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft to the first preset expansion and contraction dimension, the second preset expansion and contraction dimension, and the third preset expansion and contraction dimension, respectively, the control method further includes:

[0021] The temperature-size thermal expansion curve is corrected based on the correlation between the first corrected output temperature and the first preset expansion / contraction size, the correlation between the second corrected output temperature and the second preset expansion / contraction size, and the correlation between the third corrected output temperature and the third preset expansion / contraction size.

[0022] The motor shaft assembly device provided in this embodiment of the invention includes a first functional mechanism, a first temperature control mechanism, a second functional mechanism, a third functional mechanism, and a control system. The first functional mechanism is configured to clamp a protective sleeve, the first temperature control mechanism is configured to adjust the temperature of the protective sleeve, the second functional mechanism is configured to clamp a first end shaft assembly, and the third functional mechanism is configured to clamp a second end shaft. The control system is electrically connected to the first functional mechanism, the first temperature control mechanism, the second functional mechanism, and the third functional mechanism. The control system is configured to adjust the actual expansion and contraction size of the protective sleeve to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism, and then control the first functional mechanism, the second functional mechanism, and the third functional mechanism to assemble the protective sleeve, the first end shaft assembly, and the second end shaft together. This application uses an automated control method to ensure that the actual expansion and contraction size of the protective sleeve is the first preset expansion and contraction size in real time, which can not only ensure the assembly gap and coaxiality between the protective sleeve and the first end shaft assembly and the second end shaft, but also improve the assembly success rate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is an exploded structural diagram of the motor shaft described in some embodiments;

[0025] Figure 2 A schematic block diagram of the structure of a motor shaft assembly device provided in some embodiments;

[0026] Figure 3 A flowchart of a control method for a motor shaft assembly device provided in some embodiments.

[0027] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0028] 10 Sheath, 20 Second end shaft, 30 First end shaft, 40 Magnet, 50 First end shaft assembly, 110 First functional mechanism, 120 First temperature control mechanism, 130 First dimension detection module, 210 Second functional mechanism, 220 Second temperature control mechanism, 230 Second dimension detection module, 310 Third functional mechanism, 320 Third temperature control mechanism, 330 Third dimension detection module, 400 Control module, 500 Base.

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] The motor shaft assembly device provided in the embodiments of the present invention, such as Figure 1 and Figure 2As shown, it includes: a first functional mechanism 110 and a first temperature control mechanism 120, the first functional mechanism 110 being configured to clamp the sheath 10, and the first temperature control mechanism 120 being configured to adjust the temperature of the sheath 10; a second functional mechanism 210 being configured to clamp the first end shaft assembly 50; a third functional mechanism 310 being configured to clamp the second end shaft 20, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 being further configured to drive the sheath 10, the first end shaft assembly 50 and the second end shaft 20 to be assembled together; and a control system, the control system being electrically connected to the first functional mechanism 110, the first temperature control mechanism 120, the second functional mechanism 210 and the third functional mechanism 310. The control system is configured to adjust the actual expansion and contraction size of the sheath 10 to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120, and then control the first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 to assemble the sheath 10, the first end shaft assembly 50, and the second end shaft 20 together. The first end shaft assembly 50 includes a magnet 40 and a first end shaft 30. After the sheath 10, the first end shaft assembly 50, and the second end shaft 20 are assembled together, the sheath 10 is fitted over the first end shaft assembly 50 and the second end shaft 20 assembly, and the magnet 40 is located between the first end shaft 30 and the second end shaft 20.

[0032] The motor shaft assembly device includes a first functional mechanism 110, a first temperature control mechanism 120, a second functional mechanism 210, a third functional mechanism 310, and a control system. The first functional mechanism 110 is configured to clamp the protective sleeve 10, the first temperature control mechanism 120 is configured to adjust the temperature of the protective sleeve 10, the second functional mechanism 210 is configured to clamp the first end shaft assembly 50, and the third functional mechanism 310 is configured to clamp the second end shaft 20. The first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 are also configured to drive the protective sleeve 10, the first end shaft assembly 50, and the second end shaft 20 together. The control system is integrated with the first functional mechanism 110 and the first temperature control mechanism 120. 20. The second functional mechanism 210 and the third functional mechanism 310 are electrically connected. The control system is configured to adjust the actual expansion and contraction size of the sheath 10 to the first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120. Then, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 are controlled to assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together. This application uses an automated control method to ensure that the actual expansion and contraction size of the sheath 10 is the first preset expansion and contraction size in real time. This not only ensures the assembly gap and coaxiality between the sheath 10 and the first end shaft assembly 50 and the second end shaft 20, but also improves the assembly success rate.

[0033] In some exemplary embodiments, the motor shaft assembly device further includes a second temperature control mechanism 220, which is configured to adjust the temperature of the first end shaft assembly 50. The control system is also electrically connected to the second temperature control mechanism 220 and is configured to adjust the actual expansion and contraction size of the first end shaft assembly 50 to a second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism 220, thereby ensuring that the actual expansion and contraction size of the first end shaft assembly 50 is the second preset expansion and contraction size in real time.

[0034] That is, the control device is configured to adjust the actual expansion and contraction size of the sheath 10 to the first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120, and to adjust the actual expansion and contraction size of the first end shaft assembly 50 to the second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism 220. Then, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 are controlled to assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together. This can better ensure that the sheath 10 and the first end shaft assembly 50 are assembled with optimal assembly dimensions.

[0035] In some examples, the first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 all include: a multi-dimensional motion module; and a clamping module, the clamping module being disposed on the multi-dimensional motion module, the multi-dimensional motion module being configured to drive the clamping module to move, the clamping module of the first functional mechanism 110 being configured to clamp the protective sleeve 10, the clamping module of the second functional mechanism 210 being configured to clamp the first end shaft assembly 50, and the clamping module of the third functional mechanism 310 being configured to clamp the second end shaft 20.

[0036] Alternatively, the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 may be located on the same side of the multiple multi-dimensional motion modules; or the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 may be located on different sides of the multiple multi-dimensional motion modules; or the multi-dimensional motion module may be a two-dimensional linear motion mechanism; or the multi-dimensional motion module may be a three-dimensional linear motion mechanism; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0037] In some embodiments, multiple multi-dimensional motion modules are installed at intervals on the base 500 along the length direction of the base 500.

[0038] In some other exemplary embodiments, the motor shaft assembly device further includes a third temperature control mechanism 320, which is configured to adjust the temperature of the second end shaft 20. The control system is also electrically connected to the third temperature control mechanism 320 and is configured to adjust the actual expansion and contraction size of the second end shaft 20 to a third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism 320, thereby ensuring that the actual expansion and contraction size of the second end shaft 20 is the third preset expansion and contraction size in real time.

[0039] That is, the control device is configured to adjust the actual expansion and contraction size of the sheath 10 to the first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120, and to adjust the actual expansion and contraction size of the second end shaft 20 to the third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism 320. Then, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 are controlled to assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together. This can better ensure that the sheath 10 and the second end shaft 20 are assembled with optimal assembly dimensions.

[0040] In some examples, the first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 all include: a multi-dimensional motion module; and a clamping module, the clamping module being disposed on the multi-dimensional motion module, the multi-dimensional motion module being configured to drive the clamping module to move, the clamping module of the first functional mechanism 110 being configured to clamp the protective sleeve 10, the clamping module of the second functional mechanism 210 being configured to clamp the first end shaft assembly 50, and the clamping module of the third functional mechanism 310 being configured to clamp the second end shaft 20.

[0041] Alternatively, the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 may be located on the same side of the multiple multi-dimensional motion modules; or the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 may be located on different sides of the multiple multi-dimensional motion modules; or the multi-dimensional motion module may be a two-dimensional linear motion mechanism; or the multi-dimensional motion module may be a three-dimensional linear motion mechanism; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0042] In some embodiments, multiple multi-dimensional motion modules are installed at intervals on the base 500 along the length direction of the base 500.

[0043] In some other exemplary embodiments, such as Figure 2As shown, the motor shaft assembly device also includes a second temperature control mechanism 220 and a third temperature control mechanism 320. The second temperature control mechanism 220 is configured to adjust the temperature of the first end shaft assembly 50, and the third temperature control mechanism 320 is configured to adjust the temperature of the second end shaft 20. The control system is also electrically connected to the second temperature control mechanism 220 and is configured to adjust the actual expansion and contraction size of the first end shaft assembly 50 to a second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism 220. The control system is also electrically connected to the third temperature control mechanism 320 and is configured to adjust the actual expansion and contraction size of the second end shaft 20 to a third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism 320.

[0044] That is, the control device is configured to adjust the actual expansion and contraction size of the sheath 10 to the first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120, adjust the actual expansion and contraction size of the first end shaft assembly 50 to the second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism 220, and adjust the actual expansion and contraction size of the second end shaft 20 to the third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism 320. Then, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 are controlled to assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together. This can better ensure that the sheath 10, the first end shaft assembly 50 and the second end shaft 20 are assembled with optimal assembly dimensions.

[0045] In some examples, the control system includes: a size detection module configured to detect the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20; and a control module 400 electrically connected to a first functional mechanism 110, a first temperature control mechanism 120, a second functional mechanism 210, a second temperature control mechanism 220, a third functional mechanism 310, a third temperature control mechanism 320, and the size detection module.

[0046] The control module 400 is configured to control the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 to adjust the temperature of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 respectively according to a preset temperature-dimensional thermal expansion and contraction curve. After the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 stabilize, the control module 400 adjusts the temperature of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 according to the difference between the actual expansion and contraction dimensions of the sheath 10 and the first preset expansion and contraction dimensions, and the difference between the actual expansion and contraction dimensions of the first end shaft assembly 50 and the second preset expansion and contraction dimensions. The difference in dimensions and the difference between the actual expansion and contraction dimensions of the second end shaft 20 and the third preset expansion and contraction dimensions are combined with the preset temperature variable-dimensional difference comparison table. The formula preset output temperature + temperature variable = corrected output temperature is used to adjust the output temperatures of the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320 to the first corrected output temperature, the second corrected output temperature and the third corrected output temperature, respectively, so that the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50 and the second end shaft 20 are adjusted to the first preset expansion and contraction dimensions, the second preset expansion and contraction dimensions and the third preset expansion and contraction dimensions, respectively.

[0047] If the actual expansion and contraction size of the sheath 10 is greater than the first preset expansion and contraction size, then the first preset output temperature is greater than the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is negative); if the actual expansion and contraction size of the sheath 10 is less than the first preset expansion and contraction size, then the first preset output temperature is less than the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is positive); if the actual expansion and contraction size of the sheath 10 is equal to the first preset expansion and contraction size, then the first preset output temperature is equal to the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is 0).

[0048] If the actual expansion / contraction dimension of the first end shaft assembly 50 is greater than the second preset expansion / contraction dimension, then the second preset output temperature is greater than the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is a negative value); if the actual expansion / contraction dimension of the first end shaft assembly 50 is less than the second preset expansion / contraction dimension, then the second preset output temperature is less than the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is a positive value); if the actual expansion / contraction dimension of the first end shaft assembly 50 is equal to the second preset expansion / contraction dimension, then the second preset output temperature is equal to the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is 0).

[0049] If the actual expansion / contraction dimension of the second end shaft 20 is greater than the third preset expansion / contraction dimension, then the third preset output temperature is greater than the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is negative); if the actual expansion / contraction dimension of the second end shaft 20 is less than the third preset expansion / contraction dimension, then the third preset output temperature is less than the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is positive); if the actual expansion / contraction dimension of the second end shaft 20 is equal to the third preset expansion / contraction dimension, then the third preset output temperature is equal to the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is 0).

[0050] In some embodiments, the first temperature control mechanism 120 heats the sheath 10 to increase its temperature, causing it to expand thermally and increase its inner diameter. The second temperature control mechanism 220 cools the first end shaft assembly 50 to decrease its temperature, causing it to contract thermally and decrease its outer diameter. The third temperature control mechanism 320 cools the second end shaft 20 to decrease its temperature, causing it to contract thermally and decrease its outer diameter. This facilitates the assembly of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 with optimal assembly dimensions.

[0051] It is possible that the first temperature control mechanism 120 is set as an electromagnetic temperature control box or a semiconductor temperature control box, etc., and the second temperature control mechanism 220 and the third temperature control mechanism 320 are set as semiconductor temperature control boxes, etc.

[0052] In some examples, the control module 400 is also configured to correct the temperature-size thermal expansion curve based on the correlation between the first corrected output temperature and the first preset expansion / contraction size, the correlation between the second corrected output temperature and the second preset expansion / contraction size, and the correlation between the third corrected output temperature and the third preset expansion / contraction size.

[0053] The control module 400 of this solution corrects the temperature-dimensional thermal expansion and contraction curve according to the actual assembly environment, and continuously improves the temperature control accuracy through self-learning logic. This can effectively shorten the temperature adjustment time of the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320, thereby improving the assembly efficiency of the sheath 10, the first end shaft assembly 50 and the second end shaft 20.

[0054] In some embodiments, such as Figure 2As shown, the size detection module includes a first size detection module 130, a second size detection module 230 and a third size detection module 330. The first size detection module 130 is set to detect the actual expansion and contraction size of the sheath 10, the second size detection module 230 is set to detect the actual expansion and contraction size of the first end shaft assembly 50, and the third size detection module 330 is set to detect the actual expansion and contraction size of the second end shaft 20.

[0055] In some examples, the first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 all include: a multi-dimensional motion module; and a clamping module, the clamping module being disposed on the multi-dimensional motion module, the multi-dimensional motion module being configured to drive the clamping module to move, the clamping module of the first functional mechanism 110 being configured to clamp the protective sleeve 10, the clamping module of the second functional mechanism 210 being configured to clamp the first end shaft assembly 50, and the clamping module of the third functional mechanism 310 being configured to clamp the second end shaft 20.

[0056] It can be, such as Figure 2 As shown, the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 are located on the same side of the multiple multi-dimensional motion modules; or the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 are located on different sides of the multiple multi-dimensional motion modules; the multi-dimensional motion module can be a two-dimensional linear motion mechanism; or the multi-dimensional motion module can be a three-dimensional linear motion mechanism; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0057] In some embodiments, such as Figure 2 As shown, multiple multi-dimensional motion modules are installed at intervals on the base 500 along the length of the base 500.

[0058] The control method for the motor shaft assembly device provided in this embodiment of the invention includes:

[0059] By controlling the output temperature of the first temperature control mechanism 120, the actual expansion and contraction size of the sheath 10 is adjusted to the first preset expansion and contraction size. Then, the first functional mechanism 110, the second functional mechanism 210 and the third functional mechanism 310 are controlled to assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together.

[0060] The control method of the motor shaft assembly device adopts an automated control approach to ensure that the actual expansion and contraction size of the sheath 10 is the first preset expansion and contraction size in real time. This not only ensures the assembly gap and coaxiality between the sheath 10 and the first end shaft assembly 50 and the second end shaft 20, but also improves the assembly success rate.

[0061] In some examples, before the step of controlling the first functional mechanism 110, the second functional mechanism 210, and the third functional mechanism 310 to assemble the sheath 10, the first end shaft assembly 50, and the second end shaft 20 together, the control method further includes:

[0062] By controlling the output temperatures of the second temperature control mechanism 220 and the third temperature control mechanism 320, the actual expansion and contraction dimensions of the first end shaft assembly 50 and the second end shaft 20 are respectively adjusted to the second preset expansion and contraction dimensions and the third preset expansion and contraction dimensions.

[0063] The sheath 10, the first end shaft assembly 50, and the second end shaft 20 are assembled with the first preset expansion and contraction size, the second preset expansion and contraction size, and the third preset expansion and contraction size, respectively, so as to achieve the assembly of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 with the optimal assembly size.

[0064] In some embodiments, such as Figure 3 As shown, the steps of adjusting the actual expansion and contraction size of the sheath 10 to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism 120, and adjusting the actual expansion and contraction sizes of the first end shaft assembly 50 and the second end shaft 20 to a second preset expansion and contraction size and a third preset expansion and contraction size, respectively, by controlling the output temperatures of the second temperature control mechanism 220 and the third temperature control mechanism 320, respectively, include:

[0065] According to the thermal expansion and contraction curve of temperature and size, the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320 respectively adjust the temperature of the sheath 10, the first end shaft assembly 50 and the second end shaft 20 with the first preset output temperature, the second preset output temperature and the third preset output temperature respectively.

[0066] Obtain the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 (at this time, the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 have stabilized and remained unchanged. For example, obtain the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 after a set time to ensure that the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 have stabilized and remained unchanged).

[0067] Based on the difference between the actual expansion and contraction dimensions of the sheath 10 and the first preset expansion and contraction dimensions, the difference between the actual expansion and contraction dimensions of the first end shaft assembly 50 and the second preset expansion and contraction dimensions, and the difference between the actual expansion and contraction dimensions of the second end shaft 20 and the third preset expansion and contraction dimensions, combined with the temperature variable-size difference comparison table, the formula preset output temperature + temperature variable = corrected output temperature is used to adjust the output temperatures of the first temperature control mechanism 120, the second temperature control mechanism 220, and the third temperature control mechanism 320 to the first corrected output temperature, the second corrected output temperature, and the third corrected output temperature, respectively, so that the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 are adjusted to the first preset expansion and contraction dimensions, the second preset expansion and contraction dimensions, and the third preset expansion and contraction dimensions, respectively.

[0068] If the actual expansion and contraction size of the sheath 10 is greater than the first preset expansion and contraction size, then the first preset output temperature is greater than the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is negative); if the actual expansion and contraction size of the sheath 10 is less than the first preset expansion and contraction size, then the first preset output temperature is less than the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is positive); if the actual expansion and contraction size of the sheath 10 is equal to the first preset expansion and contraction size, then the first preset output temperature is equal to the first corrected output temperature (first preset output temperature + temperature variable = first corrected output temperature, this temperature variable is 0).

[0069] If the actual expansion / contraction dimension of the first end shaft assembly 50 is greater than the second preset expansion / contraction dimension, then the second preset output temperature is greater than the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is a negative value); if the actual expansion / contraction dimension of the first end shaft assembly 50 is less than the second preset expansion / contraction dimension, then the second preset output temperature is less than the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is a positive value); if the actual expansion / contraction dimension of the first end shaft assembly 50 is equal to the second preset expansion / contraction dimension, then the second preset output temperature is equal to the second corrected output temperature (second preset output temperature + temperature variable = second corrected output temperature, this temperature variable is 0).

[0070] If the actual expansion / contraction dimension of the second end shaft 20 is greater than the third preset expansion / contraction dimension, then the third preset output temperature is greater than the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is negative); if the actual expansion / contraction dimension of the second end shaft 20 is less than the third preset expansion / contraction dimension, then the third preset output temperature is less than the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is positive); if the actual expansion / contraction dimension of the second end shaft 20 is equal to the third preset expansion / contraction dimension, then the third preset output temperature is equal to the third corrected output temperature (third preset output temperature + temperature variable = third corrected output temperature, this temperature variable is 0).

[0071] Furthermore, such as Figure 3 As shown, after the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20 are respectively adjusted to the first preset expansion and contraction dimensions, the second preset expansion and contraction dimensions, and the third preset expansion and contraction dimensions, the control method further includes:

[0072] The temperature-size thermal expansion and contraction curve is corrected based on the relationship between the first corrected output temperature and the first preset expansion and contraction size, the relationship between the second corrected output temperature and the second preset expansion and contraction size, and the relationship between the third corrected output temperature and the third preset expansion and contraction size.

[0073] The control module 400 of this solution corrects the temperature-dimensional thermal expansion and contraction curve according to the actual assembly environment, and continuously improves the temperature control accuracy through self-learning logic. This can effectively shorten the temperature adjustment time of the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320, thereby improving the assembly efficiency of the sheath 10, the first end shaft assembly 50 and the second end shaft 20.

[0074] In some embodiments, such as Figure 3 As shown, the control method for the motor shaft assembly device includes:

[0075] According to the thermal expansion and contraction curve of temperature and size, the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320 respectively adjust the temperature of the sheath 10, the first end shaft assembly 50 and the second end shaft 20 with the first preset output temperature, the second preset output temperature and the third preset output temperature respectively.

[0076] Obtain the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50, and the second end shaft 20;

[0077] Based on the difference between the actual expansion and contraction dimensions of the sheath 10 and the first preset expansion and contraction dimensions, the difference between the actual expansion and contraction dimensions of the first end shaft assembly 50 and the second preset expansion and contraction dimensions, and the difference between the actual expansion and contraction dimensions of the second end shaft 20 and the third preset expansion and contraction dimensions, combined with the temperature variable-size difference comparison table, the formula preset output temperature + temperature variable = corrected output temperature is used to adjust the output temperatures of the first temperature control mechanism 120, the second temperature control mechanism 220 and the third temperature control mechanism 320 to the first corrected output temperature, the second corrected output temperature and the third corrected output temperature, respectively, so that the actual expansion and contraction dimensions of the sheath 10, the first end shaft assembly 50 and the second end shaft 20 are adjusted to the first preset expansion and contraction dimensions, the second preset expansion and contraction dimensions and the third preset expansion and contraction dimensions, respectively.

[0078] The control mechanism 110, the second function mechanism 210 and the third function mechanism 310 assemble the sheath 10, the first end shaft assembly 50 and the second end shaft 20 together, and correct the temperature-size thermal expansion and contraction curve according to the comparison relationship between the first corrected output temperature and the first preset expansion and contraction size, the comparison relationship between the second corrected output temperature and the second preset expansion and contraction size, and the comparison relationship between the third corrected output temperature and the third preset expansion and contraction size.

[0079] In summary, the motor shaft assembly device provided in this embodiment of the invention includes a first functional mechanism, a first temperature control mechanism, a second functional mechanism, a third functional mechanism, and a control system. The first functional mechanism is configured to clamp a protective sleeve, the first temperature control mechanism is configured to adjust the temperature of the protective sleeve, the second functional mechanism is configured to clamp a first end shaft assembly, and the third functional mechanism is configured to clamp a second end shaft. The control system is electrically connected to the first functional mechanism, the first temperature control mechanism, the second functional mechanism, and the third functional mechanism. The control system is configured to adjust the actual expansion and contraction size of the protective sleeve to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism, and then control the first functional mechanism, the second functional mechanism, and the third functional mechanism to assemble the protective sleeve, the first end shaft assembly, and the second end shaft together. This application uses an automated control method to ensure that the actual expansion and contraction size of the protective sleeve is the first preset expansion and contraction size in real time, which can not only ensure the assembly gap and coaxiality between the protective sleeve and the first end shaft assembly and the second end shaft, but also improve the assembly success rate.

[0080] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a horizontal level less than or equal to the second feature.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A motor shaft assembly device, characterized in that, include: A first functional mechanism and a first temperature control mechanism, wherein the first functional mechanism is configured to clamp the protective sleeve, and the first temperature control mechanism is configured to adjust the temperature of the protective sleeve; The second functional mechanism is configured to clamp the first end shaft assembly; The third functional mechanism is configured to clamp the second end shaft. The first functional mechanism, the second functional mechanism, and the third functional mechanism are also configured to drive the sheath, the first end shaft assembly, and the second end shaft to be assembled together. The control system is electrically connected to the first functional mechanism, the first temperature control mechanism, the second functional mechanism, and the third functional mechanism, and is configured to adjust the actual expansion and contraction size of the sheath to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism, and then control the first functional mechanism, the second functional mechanism, and the third functional mechanism to assemble the sheath, the first end shaft assembly, and the second end shaft together. The motor shaft assembly device further includes a second temperature control mechanism and a third temperature control mechanism; the control system includes: The size detection module is configured to detect the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft. and The control module is electrically connected to the first functional mechanism, the first temperature control mechanism, the second functional mechanism, the second temperature control mechanism, the third functional mechanism, the third temperature control mechanism, and the size detection module. It is configured to control the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism to adjust the temperature of the sheath, the first end shaft assembly, and the second end shaft respectively to a first preset output temperature, a second preset output temperature, and a third preset output temperature, according to the temperature-size difference curve. Then, based on the difference between the actual expansion / contraction size of the sheath and the first preset expansion / contraction size, the difference between the actual expansion / contraction size of the first end shaft assembly and the second preset expansion / contraction size, and the difference between the actual expansion / contraction size of the second end shaft and the third preset expansion / contraction size, and in conjunction with a temperature variable-size difference lookup table, the output temperatures of the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are adjusted to the first corrected output temperature, the second corrected output temperature, and the third corrected output temperature, respectively, so that the actual expansion / contraction sizes of the sheath, the first end shaft assembly, and the second end shaft are adjusted to the first preset expansion / contraction size, the second preset expansion / contraction size, and the third preset expansion / contraction size, respectively.

2. The motor shaft assembly device according to claim 1, characterized in that, Also includes: The second temperature control mechanism is configured to adjust the temperature of the first end shaft assembly; The control system is also electrically connected to the second temperature control mechanism and is configured to adjust the actual expansion and contraction size of the first end shaft assembly to a second preset expansion and contraction size by controlling the output temperature of the second temperature control mechanism.

3. The motor shaft assembly device according to claim 1, characterized in that, Also includes: The third temperature control mechanism is configured to adjust the temperature of the second end shaft. The control system is also electrically connected to the third temperature control mechanism and is configured to adjust the actual expansion and contraction size of the second end shaft to a third preset expansion and contraction size by controlling the output temperature of the third temperature control mechanism.

4. The motor shaft assembly device according to any one of claims 1 to 3, characterized in that, The control module is further configured to correct the temperature-size thermal expansion and contraction curve based on the correlation between the first corrected output temperature and the first preset expansion and contraction size, the correlation between the second corrected output temperature and the second preset expansion and contraction size, and the correlation between the third corrected output temperature and the third preset expansion and contraction size.

5. The motor shaft assembly device according to any one of claims 1 to 3, characterized in that, The size detection module includes a first size detection module, a second size detection module, and a third size detection module. The first size detection module, the second size detection module, and the third size detection module are configured to detect the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft, respectively.

6. The motor shaft assembly device according to any one of claims 1 to 3, characterized in that, The first functional mechanism, the second functional mechanism, and the third functional mechanism all include: Multidimensional motion module; and A clamping module is provided on the multi-dimensional motion module, and the multi-dimensional motion module is configured to drive the clamping module to move. The first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are located on the same side or different sides of the multiple multidimensional motion modules.

7. A control method for a motor shaft assembly device as described in any one of claims 1 to 6, characterized in that, include: By controlling the output temperature of the first temperature control mechanism, the actual expansion and contraction size of the sheath is adjusted to the first preset expansion and contraction size. Then, the first functional mechanism, the second functional mechanism, and the third functional mechanism are controlled to assemble the sheath, the first end shaft assembly, and the second end shaft together. Before the step of controlling the first functional mechanism, the second functional mechanism, and the third functional mechanism to assemble the sheath, the first end shaft assembly, and the second end shaft together, the control method further includes: By controlling the output temperatures of the second and third temperature control mechanisms, the actual expansion and contraction dimensions of the first end shaft assembly and the second end shaft are respectively adjusted to the second preset expansion and contraction dimensions and the third preset expansion and contraction dimensions. The steps of adjusting the actual expansion and contraction size of the sheath to a first preset expansion and contraction size by controlling the output temperature of the first temperature control mechanism and adjusting the actual expansion and contraction sizes of the first end shaft assembly and the second end shaft to a second preset expansion and contraction size and a third preset expansion and contraction size, respectively, by controlling the output temperatures of the second temperature control mechanism and the third temperature control mechanism include: According to the thermal expansion and contraction curve of temperature and size, the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism respectively adjust the temperature of the sheath, the first end shaft assembly, and the second end shaft at the first preset output temperature, the second preset output temperature, and the third preset output temperature; Obtain the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft; Based on the difference between the actual expansion and contraction size of the sheath and the first preset expansion and contraction size, the difference between the actual expansion and contraction size of the first end shaft assembly and the second preset expansion and contraction size, and the difference between the actual expansion and contraction size of the second end shaft and the third preset expansion and contraction size, and in conjunction with the temperature variable-size difference lookup table, the output temperatures of the first temperature control mechanism, the second temperature control mechanism, and the third temperature control mechanism are adjusted to the first corrected output temperature, the second corrected output temperature, and the third corrected output temperature, respectively, so that the actual expansion and contraction sizes of the sheath, the first end shaft assembly, and the second end shaft are adjusted to the first preset expansion and contraction size, the second preset expansion and contraction size, and the third preset expansion and contraction size, respectively.

8. The control method for the motor shaft assembly device according to claim 7, characterized in that, After the steps of adjusting the actual expansion and contraction dimensions of the sheath, the first end shaft assembly, and the second end shaft to the first preset expansion and contraction dimensions, the second preset expansion and contraction dimensions, and the third preset expansion and contraction dimensions, respectively, the control method further includes: The temperature-size thermal expansion curve is corrected based on the correlation between the first corrected output temperature and the first preset expansion / contraction size, the correlation between the second corrected output temperature and the second preset expansion / contraction size, and the correlation between the third corrected output temperature and the third preset expansion / contraction size.

Images