Electric cylinder liner processing fixing device

By coordinating the moving and clamping components of the electric cylinder liner machining fixing device, the electric cylinder is automatically moved and stably clamped during the machining process, solving the problem of time-consuming and labor-intensive position switching during electric cylinder machining, and improving machining efficiency and accuracy.

CN224544359UActive Publication Date: 2026-07-24YINCHUAN HOYEE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YINCHUAN HOYEE TECH CO LTD
Filing Date
2025-09-02
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing electric cylinders require frequent manual disassembly and reassembly to switch processing areas during the machining process, which leads to an extended production cycle.

Method used

An electric cylinder liner machining and fixing device is adopted, which includes a moving component and a clamping component. The moving component enables automatic movement of the electric cylinder, and the clamping component provides stable clamping, avoiding the manual disassembly and assembly process.

Benefits of technology

It improves the efficiency and precision of electric cylinder machining, reduces the production cycle, and enhances the stability and applicability of clamping.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides an electric cylinder sleeve machining fixing device, which comprises a moving assembly installed on a machining station, the moving assembly comprises a moving guide rail, a lead screw arranged in parallel with the moving guide rail, a driving piece for providing rotating power for the lead screw and a moving platform arranged above the moving guide rail; and at least two clamping assemblies for clamping electric cylinder sleeves are arranged above the moving platform. The electric cylinder sleeve machining fixing device realizes the automatic movement of the electric cylinder sleeve in the machining process through the cooperation of the moving assembly and the clamping assembly, avoids the complicated process of traditional manual disassembly and assembly of the electric cylinder and effectively improves the machining efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, specifically to a cylinder liner machining and fixing device for electric cylinders, which is particularly suitable for effectively positioning electric cylinders during milling, grinding and other processes. Background Technology

[0002] As a modular product that integrates a servo motor and a lead screw, the electric cylinder combines the advantages of precise control of the servo motor and efficient transmission of the lead screw. It has many advantages such as high precision, fast response, and compact structure, and has been widely used in automated production lines, playing an important role in fields such as robot joint drive, CNC machine tool feed system, and packaging machinery.

[0003] During the manufacturing process of electric cylinders, various machining operations are required, such as milling the outer shell to obtain specific shapes and sizes, and grinding to improve surface precision.

[0004] Currently, the common method of fixing electric cylinders during machining is to use multiple bolts to directly fix the electric cylinder to the mounting bracket. Although this method can ensure the stability of the electric cylinder to a certain extent, since milling and grinding processes need to be performed in different areas of the electric cylinder, and the working range of the milling head and grinding head is limited, it is necessary to manually disassemble and reassemble the electric cylinder multiple times to move the electric cylinder and achieve machining of the entire cylinder body.

[0005] However, the installation and disassembly process is extremely time-consuming and labor-intensive. Each time the electric cylinder machining area is changed, multiple bolts need to be tightened and loosened, which greatly extends the production cycle.

[0006] In conclusion, existing electric cylinder machining fixing methods cannot meet the needs of high-efficiency electric cylinder machining. Utility Model Content

[0007] The technical problem this application aims to solve is that, during the processing of existing electric cylinders, when switching the position of the electric cylinder for processing different areas, it is necessary to disassemble and reassemble the fixed position of the electric cylinder, which is time-consuming and labor-intensive.

[0008] To solve the above-mentioned technical problems, this application provides a cylinder liner machining and fixing device, comprising: A movable assembly installed on a machining station, the movable assembly comprising: a movable guide rail, a lead screw arranged parallel to the movable guide rail, a drive component providing rotational power to the lead screw, a movable platform disposed above the movable guide rail; and at least two clamping assemblies disposed above the movable platform for clamping the cylinder liner of the electric cylinder.

[0009] The electric cylinder liner machining and fixing device of this utility model realizes the automatic movement of the electric cylinder liner during the machining process through the cooperation of the moving component and the clamping component, avoiding the tedious process of traditional manual disassembly and assembly of electric cylinders, and effectively improving the machining efficiency.

[0010] To further improve the clamping effect and machining adaptability of the electric cylinder cylinder liner machining fixing device, as an option of the above-mentioned electric cylinder cylinder liner machining fixing device, the clamping assembly includes a lower clamping seat and a clamping limiting member disposed above the lower clamping seat, and the electric cylinder is installed between the clamping limiting member and the lower clamping seat.

[0011] To further enhance the clamping stability and reliability of the electric cylinder by the clamping assembly, as an alternative to the aforementioned electric cylinder liner machining and fixing device, the clamping assembly further includes columns located on both sides of the lower clamping seat, with limiting plates installed on the top of the two columns located on both sides of the lower clamping seat. The limiting plates are installed above the columns by locking components.

[0012] As another option for the above-mentioned electric cylinder liner machining fixing device, a limiting screw is provided between the moving platform and the limiting plate. The bottom end of the limiting screw is installed on the moving platform, the top end of the limiting screw passes through the limiting plate, and a limiting nut is installed on the upper part of the limiting plate.

[0013] To further improve the adaptability of the clamping assembly to electric cylinders of different specifications and the clamping accuracy, as an option for the aforementioned electric cylinder liner machining fixing device, a compensation block is also provided above the column.

[0014] To further improve the clamping effect of the electric cylinder, ensure the stability of the electric cylinder during processing, and reduce vibration and displacement caused by improper clamping, as an option for the above-mentioned electric cylinder liner processing fixing device, the shape of the clamping surface of the lower clamping seat follows the shape of the outer shell surface of the electric cylinder, and correspondingly, the shape of the clamping surface of the clamping limiting member follows the shape of the outer shell surface of the electric cylinder.

[0015] Optionally, the clamping surface of the lower clamping seat is a plane or a V-shaped surface, and correspondingly, the clamping surface of the clamping limiting member is a plane or a V-shaped surface.

[0016] The technical advantages of this application are as follows: The electric cylinder liner machining and fixing device of this utility model realizes the automatic movement of the electric cylinder liner during the machining process through the cooperation of the moving component and the clamping component, avoiding the tedious process of traditional manual disassembly and assembly of electric cylinders, and effectively improving the machining efficiency.

[0017] Furthermore, the preferred clamping assembly of this utility model, through the cooperation of the lower clamping seat and the clamping limiting member, can effectively and firmly clamp the electric cylinder, ensuring the positional accuracy and stability of the electric cylinder during the processing. At the same time, it has a certain degree of versatility, providing a strong guarantee for the efficient and high-quality processing of electric cylinder liners.

[0018] Furthermore, this utility model further optimizes the structure of the clamping assembly by setting columns on both sides of the lower clamping seat and installing a limiting plate on the top of the columns, which effectively improves the clamping stability and reliability of the electric cylinder during the processing, and provides a strong guarantee for the high-quality processing of the electric cylinder liner.

[0019] Furthermore, by setting a limiting screw and a limiting nut between the moving platform and the limiting plate, the structure of the clamping assembly is further optimized, which effectively improves the stability and accuracy of the electric cylinder during movement and processing, and provides a reliable guarantee for the high-quality processing of the electric cylinder liner.

[0020] Furthermore, the present invention includes a compensation block above the column, which effectively solves the problem of poor compatibility of the clamping assembly with electric cylinders of different specifications, improves the clamping stability and machining accuracy of the electric cylinder, and provides a strong guarantee for the high-quality and high-efficiency machining of the electric cylinder liner. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation position of a cylinder liner machining and fixing device provided in an embodiment of this application; Figure 2 This is a schematic diagram of a cylinder liner machining and fixing device provided in an embodiment of this application. Explanation of reference numerals in the attached figures: 1. Moving component; 11. Moving guide rail; 12. Lead screw; 13. Drive component; 14. Moving platform; 2. Clamping component; 21. Lower clamping seat; 22. Clamping limit component; 23. Column; 24. Limiting plate; 25. Limiting screw; 26. Limiting nut; 27. Compensation block; 100. Electric cylinder liner. Detailed Implementation

[0022] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0023] In the machining of electric cylinders, the traditional method of fixing them involves using multiple bolts to directly secure the cylinder to a mounting bracket. However, milling and grinding operations need to be performed in different areas of the electric cylinder. Due to the limited working range of the milling and grinding heads, each time the machining area of ​​the electric cylinder is changed, multiple bolts must be manually tightened and loosened to disassemble and reassemble the electric cylinder's fixed position in order to move the cylinder and achieve machining of the entire cylinder body. This process is extremely time-consuming and labor-intensive, significantly extending the production cycle. To solve the above problems, this utility model provides an electric cylinder liner machining and fixing device.

[0024] like Figures 1-2 This invention illustrates a cylinder liner machining and fixing device provided by the present invention, including a moving component 1 and a clamping component.

[0025] The movable component 1 of the electric cylinder liner machining fixing device is installed on the machining station. The movable component 1 includes a movable guide rail 11, a lead screw 12, a drive component 13, and a movable platform 14. The movable guide rail 11 is laid horizontally on the machining station, providing guidance for the movement of the movable platform 14 and ensuring that the movable platform 14 can move smoothly along a straight line. The lead screw 12 is arranged parallel to the movable guide rail 11, and its end is fixed to the corresponding structure of the machining station by bearings and other components, ensuring that the lead screw 12 can rotate freely.

[0026] The drive unit 13 provides rotational power to the lead screw 12. The drive unit 13 can be a common power source such as a motor. The drive unit 13 is connected to the lead screw 12 via a connecting component, which can be a coupling or a direct drive. When the drive unit 13 starts, its output shaft drives the lead screw 12 to rotate synchronously. The moving platform 14 is positioned above the moving guide rail 11 and is threadedly connected to the lead screw 12. Specifically, the bottom of the moving platform 14 has a threaded hole adapted to the lead screw 12. When the lead screw 12 rotates under the drive of the drive unit 13, according to the principle of threaded transmission, the moving platform 14 will move linearly along the axial direction of the lead screw 12 under the guidance of the moving guide rail 11. Preferably, the lead screw 12 is a ball screw, and the bottom of the moving platform 14 is provided with a ball-bearing sleeve connected to the lead screw 12.

[0027] At least two clamping components 2 are provided above the mobile platform 14. These clamping components 2 are used to clamp the cylinder liner of the electric cylinder. The specific structure of the clamping components 2 can be designed according to actual needs.

[0028] When milling or grinding is required on different areas of the electric cylinder liner, the drive unit 13 is activated, which drives the lead screw 12 to rotate, thereby moving the moving platform 14 along the moving guide rail 11. The moving platform 14, the clamping assembly 2 above it, and the clamped electric cylinder liner move together, moving the area of ​​the electric cylinder liner that needs to be processed to the working range of the milling head or grinding head. Unlike traditional methods, there is no need to manually disassemble and assemble the electric cylinder, which greatly improves processing efficiency and shortens the production cycle.

[0029] For example, when milling the cylinder liner of an electric cylinder, if the current machining area is completed and another area needs to be machined, the control system can simply start the drive component 13 to move the moving platform 14 to the appropriate position, allowing the milling process to continue. Similarly, during grinding, the position of the electric cylinder liner can be easily adjusted via the moving component 1 to machine the entire cylinder block.

[0030] In summary, the electric cylinder liner machining and fixing device of this utility model achieves automatic movement of the electric cylinder liner during the machining process through the cooperation of the moving component 1 and the clamping component 2, avoiding the tedious process of traditional manual disassembly and assembly of the electric cylinder, and effectively improving machining efficiency.

[0031] Continue to refer to Figure 2 Based on the above embodiments, to further improve the clamping effect and machining adaptability of the electric cylinder liner machining fixing device for the electric cylinder, in some preferred embodiments, the clamping assembly 2 includes a lower clamping seat 21 and a clamping limiting member 22 disposed above the lower clamping seat 21. The lower clamping seat 21 serves as the basic support part of the clamping assembly, and its shape and size are designed according to the bottom structure of the electric cylinder. Generally, the lower clamping seat 21 has a relatively flat support surface, which is fixedly connected to the moving platform 14, possibly by bolts, to ensure that the lower clamping seat 21 is firmly installed on the moving platform 14. When the moving assembly 1 drives the moving platform 14 to move, the lower clamping seat 21 will not shake or shift, providing stable support for the electric cylinder.

[0032] The clamping and limiting component 22 is positioned above the lower clamping base 21. Its function is to cooperate with the lower clamping base 21 to install the electric cylinder between the two. The clamping and limiting component 22 can have various structural forms. For example, it can adopt a frame structure, the shape of which matches the shape of the electric cylinder, enabling it to limit the electric cylinder from multiple directions. Alternatively, it can be composed of multiple independent limiting blocks, the positions of which can be adjusted according to the specific shape and size of the electric cylinder to achieve clamping of the electric cylinder.

[0033] When actually installing the electric cylinder, first place the electric cylinder on the support surface of the lower clamping seat 21 and adjust its position to roughly position it in a suitable machining location. Then install the clamping limit member 22. If the clamping limit member 22 is a frame structure, fit it entirely over the outside of the electric cylinder and fix it to the lower clamping seat 21 using bolts or other connecting parts. During the connection process, the tightness of the bolts can be adjusted to ensure that the clamping limit member 22 generates an appropriate clamping force on the electric cylinder, ensuring that the electric cylinder is firmly clamped without damaging it due to excessive clamping force. If the clamping limit member 22 consists of multiple independent limit blocks, install each limit block onto the lower clamping seat 21 in sequence and adjust their position to ensure that the limit block fits tightly against the outer surface of the electric cylinder. Finally, fix the limit block to the lower clamping seat 21 using connecting parts to complete the installation of the electric cylinder.

[0034] When the moving component 1 moves the moving platform 14, which in turn moves the clamping component 2 and the electric cylinder, the electric cylinder is securely mounted between the clamping limiter 22 and the lower clamping seat 21. During movement, there will be no relative movement or wobbling, ensuring the positional accuracy of the electric cylinder during machining and thus improving machining quality. For example, during milling, the stable fixing of the electric cylinder ensures that the milling tool can machine the electric cylinder according to a predetermined trajectory, avoiding problems such as dimensional deviations or decreased surface quality caused by cylinder movement; during grinding, it improves the machining quality of the electric cylinder liner.

[0035] Furthermore, for electric cylinders of different specifications and shapes, simply replacing the lower clamping seat 21 and clamping limit member 22 with appropriate shapes and sizes, or adjusting the positions of each limit block in the clamping limit member 22, can achieve clamping and fixing of different electric cylinders, thus improving the applicability of this processing and fixing device.

[0036] In summary, the preferred clamping assembly 2 of this utility model, through the cooperation of the lower clamping seat 21 and the clamping limiting member 22, can effectively and securely clamp the electric cylinder, ensuring the positional accuracy and stability of the electric cylinder during the processing, while also having a certain degree of versatility.

[0037] Continue to refer to Figure 2 Based on the above embodiments, to further enhance the clamping stability and reliability of the clamping assembly 2 for the electric cylinder, in some preferred embodiments, the clamping assembly 2 further includes columns 23 located on both sides of the lower clamping seat 21. The columns 23 are installed on both sides of the lower clamping seat 21, and their bottoms can be connected to the moving platform 14 by welding or bolting.

[0038] Limiting plates 24 are provided on the top of the two columns 23 located on both sides of the lower clamping seat 21. The shape and size of the limiting plates 24 are designed according to the overall size and shape of the electric cylinder, and are generally rectangular or have a shape that matches the top contour of the electric cylinder. The function of the limiting plates 24 is to limit the electric cylinder from the top, preventing the electric cylinder from jumping upward due to cutting forces during processing, thereby further improving the clamping stability of the electric cylinder. The limiting plates 24 are installed above the columns 23 by locking components (not shown in the figure). The locking components (not shown in the figure) can be bolt and nut assemblies. Taking the bolt and nut assembly as an example, through holes (not shown in the figure) are opened at corresponding positions on the top of the limiting plates 24 and the columns 23. After the bolt is passed through the through holes, a nut is installed on the other end of the bolt and tightened. In this utility model, by setting columns 23 on both sides of the lower clamping seat 21 and installing limiting plates 24 on the top of the columns 23, the structure of the clamping assembly 2 is further optimized, effectively improving the clamping stability and reliability of the electric cylinder during processing.

[0039] Continue to refer to Figure 1 Based on the above embodiments, to further improve the stability of the clamping assembly 2 during movement and its limiting effect on the electric cylinder, in some preferred embodiments, the clamping assembly 2 also includes columns 23 located on both sides of the lower clamping seat 21, and a limiting plate 24 is provided on the top of the two columns 23 located on both sides of the lower clamping seat 21. The columns 23 are vertically installed on both sides of the lower clamping seat 21, and their installation method can be a combination of welding and bolt connection to initially fix them to the moving platform 14, ensuring a firm and reliable connection and avoiding loosening during use. The limiting plate 24 is customized according to the top contour and size of the electric cylinder to ensure uniform contact with the top of the electric cylinder, thereby providing a stable limiting effect. The limiting plate 24 is installed on the top of the columns 23, and on this basis, a limiting screw 25 is provided between the moving platform 14 and the limiting plate 24. The bottom end of the limiting screw 25 is installed on the moving platform 14, and the installation method can be welding or threaded connection. The top end of the limiting screw 25 passes through the limiting plate 24. A through hole matching the diameter of the limiting screw 25 is formed in the limiting plate 24, allowing the limiting screw 25 to pass through. A limiting nut 26 is installed on the upper part of the limiting plate 24. The limiting nut 26 is selected to match the limiting screw 25. By rotating the limiting nut 26, the position of the limiting nut 26 on the limiting screw 25 can be adjusted, thereby fixing the limiting plate 24.

[0040] In actual use, after the electric cylinder is installed on the clamping assembly 2, the position of the limiting nut 26 is adjusted to ensure it is in close contact with the upper surface of the limiting plate 24. The pressure between the limiting nut 26 and the limiting plate 24 is controlled to ensure that the limiting plate 24 can apply a suitable limiting force to the top of the electric cylinder. When the moving assembly 1 drives the moving platform 14 to move, the limiting screw 25 moves along with the moving platform 14. At the same time, due to the action of the limiting nut 26, the limiting plate 24 is also restricted within a certain position range, thereby ensuring the stability of the clamping assembly 2 and the electric cylinder during the movement process.

[0041] For example, during the drilling of the cylinder liner of an electric cylinder, the moving assembly 1 needs to move the electric cylinder to the drilling position. During this movement, the cooperation of the limiting screw 25 and the limiting nut 26 effectively prevents the clamping assembly 2 and the electric cylinder from shaking or shifting due to inertia, ensuring that the electric cylinder accurately stops at the drilling position. Simultaneously, this limiting structure can also withstand the vibration and impact forces generated by the electric cylinder during processing to a certain extent, further protecting the electric cylinder and the processing equipment, and extending the service life of the equipment.

[0042] Furthermore, the limiting structure is also adjustable. Depending on the specifications and models of the electric cylinders, and different processing requirements, the limiting force and position of the limiting plate 24 on the electric cylinder can be changed by adjusting the position of the limiting nut 26 on the limiting screw 25, thereby achieving precise limiting of different electric cylinders and improving the versatility and adaptability of the processing fixing device.

[0043] In summary, by setting a limiting screw 25 and a limiting nut 26 between the moving platform 14 and the limiting plate 24, the structure of the clamping assembly 2 is further optimized, effectively improving the stability of the electric cylinder during movement and processing.

[0044] Continue to refer to Figure 2Based on the above embodiments, to further improve the adaptability of the clamping assembly 2 to electric cylinders of different specifications and the clamping accuracy, in some preferred embodiments, a compensation block 27 is also provided above the column 23. The compensation block 27 is detachably installed above the column 23. Preferably, a mutually cooperating positioning structure is provided at the top of the column 23 and the bottom of the compensation block 27, such as a positioning pin and a positioning hole (not shown in the figure). During installation, the positioning pin is first inserted into the corresponding positioning hole at the top of the column 23 and the bottom of the compensation block 27 to achieve initial positioning of the compensation block. Then, bolts are used to firmly connect the compensation block to the column 23. In actual processing, due to the variety of specifications and models of electric cylinders, their height, external dimensions, and other parameters vary. When using the original clamping assembly 2 (including the lower clamping seat 21, column 23, and limiting plate 24, etc.) to clamp electric cylinders of different heights, the limiting plate 24 may fail to accurately limit the top of the electric cylinder, thus affecting the clamping stability and machining accuracy of the electric cylinder. However, by setting up the compensation block, a compensation block of appropriate thickness can be selected and installed above the column 23 according to the actual height of the electric cylinder.

[0045] In summary, the compensation block provided above the column 23 in this utility model effectively solves the problem of poor compatibility of the clamping component 2 with electric cylinders of different specifications.

[0046] Continue to refer to Figure 2 Based on the above embodiments, to further improve the clamping effect of the electric cylinder, ensure its stability during processing, and reduce vibration and displacement caused by improper clamping, in some preferred embodiments, the shape of the clamping surface of the lower clamping seat 21 conforms to the shape of the electric cylinder outer shell surface. Correspondingly, the shape of the clamping surface of the clamping limiting member 22 also conforms to the shape of the electric cylinder outer shell surface. This conformal design allows for a closer and more fitted contact between the clamping surface and the electric cylinder outer shell surface, thereby increasing the contact area, dispersing the clamping force, and preventing damage to the electric cylinder outer shell due to localized stress concentration.

[0047] For example, when machining a square cylinder liner, a flat clamping surface is more suitable. When machining a cylindrical cylinder liner, a V-shaped clamping surface is more suitable.

[0048] Finally, it should be noted that: unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings of this application are intended to cover non-exclusive inclusion; in the description of embodiments of this application, "a plurality of" means two or more, unless otherwise expressly and specifically defined. The reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments.

[0049] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for fixing and machining cylinder liners for electric cylinders, characterized in that, include: A movable component (1) installed on a machining station includes: a movable guide rail (11), a lead screw (12) arranged parallel to the movable guide rail (11), a drive component (13) that provides rotational power to the lead screw (12), and a movable platform (14) arranged above the movable guide rail (11). At least two clamping assemblies (2) for clamping the cylinder liner of the electric cylinder are disposed above the mobile platform (14).

2. The electric cylinder liner machining and fixing device according to claim 1, characterized in that, The clamping assembly (2) includes a lower clamping seat (21) and a clamping limiting member (22) disposed above the lower clamping seat (21), and the electric cylinder is installed between the clamping limiting member (22) and the lower clamping seat (21).

3. The electric cylinder liner machining and fixing device according to claim 2, characterized in that, The clamping assembly (2) also includes columns (23) located on both sides of the lower clamping seat (21), and a limiting plate (24) is provided on the top of the two columns (23) located on both sides of the lower clamping seat (21).

4. The electric cylinder liner machining and fixing device according to claim 3, characterized in that, The limiting plate (24) is installed above the column (23) by a locking member.

5. The electric cylinder liner machining and fixing device according to claim 3, characterized in that, A limiting screw (25) is provided between the mobile platform (14) and the limiting plate (24). The bottom end of the limiting screw (25) is installed on the mobile platform (14), and the top end of the limiting screw (25) passes through the limiting plate (24). A limiting nut (26) is installed on the upper part of the limiting plate (24).

6. The electric cylinder liner machining and fixing device according to claim 3, characterized in that, A compensation block (27) is also provided above the column (23).

7. The electric cylinder liner machining and fixing device according to claim 2, characterized in that, The shape of the clamping surface of the lower clamping seat (21) follows the shape of the outer shell surface of the electric cylinder. Correspondingly, the shape of the clamping surface of the clamping limiting member (22) follows the shape of the outer shell surface of the electric cylinder.

8. The electric cylinder liner machining and fixing device according to claim 7, characterized in that, The clamping surface of the lower clamping seat (21) is a plane or a V-shaped surface, and correspondingly, the clamping surface of the clamping limiting member (22) is a plane or a V-shaped surface.