A ball plunger jacking assembly structure for motor sheet machining

Abstract

The application discloses a ball plunger pressing assembly structure for motor sheet machining, and relates to the technical field of motor part machining tooling, which comprises a long strip installation main beam, a plurality of elastic pressing units and a sectional workpiece bearing seat, a plurality of two-section stepped installation cavities are evenly arranged in the long strip installation main beam along the length direction, and the elastic pressing units are correspondingly installed in the two-section stepped installation cavities; the application adopts a pure mechanical structure combination design, and is free of complex driving components such as motors, cylinders and hydraulic devices, so that the application has the advantages of simple and reliable structure, low failure rate, strong environmental adaptability, adaptability to various industrial working condition scenes such as machine tool machining, tooling positioning and segmented mold clamping, high modular degree of overall parts, regular structure, convenient disassembly and assembly, good interchangeability, flexible increase or decrease of the number of pressing units according to actual workpiece length requirements, and adaptability to different size pressing force requirements through adjustment of the screw stud screw-in depth.

Description

Technical Field

[0001] This invention relates to the technical field of tooling for machining motor parts, specifically a ball plunger clamping assembly structure for machining motor plates. Background Technology

[0002] During the manufacturing process of motor segments, specialized tooling is required to position and tighten the segments to ensure the processing accuracy of stamping, assembly, and other procedures. Existing motor segment tightening and assembly structures mostly use rigid screws for direct tightening, lacking elastic buffering and balanced adjustment designs, which leads to numerous problems in practical use.

[0003] Traditional clamping structures suffer from difficulty in precisely controlling the clamping force, easily leading to localized deformation of the motor plates under pressure, affecting their flatness and assembly accuracy. Uneven force distribution at multiple clamping points can cause motor plates to shift or loosen, resulting in poor processing consistency and a high scrap rate. Furthermore, the clamping plunger lacks precise guidance, making it prone to wobbling and jamming during operation. The rigid contact at the clamping end can easily scratch the surface of the motor plates. Moreover, long-term exposure to processing vibrations can cause the clamping components to loosen, requiring frequent shutdowns for adjustment, impacting production efficiency. Additionally, its versatility is poor, failing to meet the processing requirements of motor plates of different specifications. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a ball plunger clamping assembly structure for motor sheet processing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a ball plunger clamping assembly structure for motor lamination processing, comprising: The system includes a long main beam, multiple sets of elastic clamping units, and a segmented workpiece support. The long main beam has multiple sets of two-section stepped mounting cavities evenly opened along its length, and the elastic clamping units are installed in the two-section stepped mounting cavities. The segmented workpiece support is located below the elastic clamping unit and is composed of multiple modules spliced ​​together.

[0006] As a preferred embodiment of the present invention, the two-section stepped mounting cavity includes a lower section plunger guide hole, an upper section threaded adjustment groove, and an annular limiting step disposed between the two.

[0007] As a preferred embodiment of the present invention, the elastic clamping unit is installed in a two-section stepped mounting cavity. The elastic clamping unit is provided with an anti-loosening locking screw, an elastic pre-tightening adjusting screw, a compression elastic spring, a floating plunger rod and a rolling clamping end in sequence from top to bottom.

[0008] As a preferred embodiment of the present invention, the elastic preload adjusting stud is threadedly engaged with the upper section threaded adjusting groove, the top of the elastic preload adjusting stud is provided with an internal hexagonal adjusting groove, and the lower end of the elastic preload adjusting stud can be limited and abutted against the annular limiting step.

[0009] As a preferred embodiment of the present invention, the anti-loosening locking screw is screwed into the upper threaded adjustment groove and pressed against the upper end of the elastic preload adjustment stud, and the top of the anti-loosening locking screw is provided with an internal hexagonal adjustment groove.

[0010] As a preferred embodiment of the present invention, the floating plunger rod is slidably assembled in the lower plunger guide hole, and a rolling pressing end is hinged to the bottom groove of the floating plunger rod by a pin.

[0011] As a preferred embodiment of the present invention, the pin is inserted into the slot at the bottom of the floating plunger rod and the wheel hole of the rolling clamping end, serving both as a hinge shaft to achieve a fixed connection between the two and as a rotation axis to allow the rolling clamping end to rotate freely around it.

[0012] As a preferred embodiment of the present invention, the segmented workpiece support is composed of multiple modules spliced ​​together, and each module corresponds to the pressing position of a set of elastic pressing units.

[0013] The beneficial effects of this invention are: 1. The ball plunger clamping assembly structure for motor plate machining adopts an integrated long main beam layout structure. Internally, it integrates multiple sets of two-section stepped cavities. The lower section's smooth hole provides precise linear guidance and constraint for the plunger rod, effectively preventing radial offset, skewness, jamming, and wobbling during the plunger rod's up-and-down movement. This ensures the plunger rod remains vertically stable during sliding, with centered and smooth elastic force transmission. The structural design of the limiting step in the middle of the cavity precisely limits and blocks the maximum screwing depth of the lower adjusting stud. This design ensures that all adjusting studs can be uniformly positioned at the same standard height, thereby uniformly controlling the pre-compression stroke and extension allowance of each set of springs. From a structural perspective, this guarantees that the elastic clamping force at multiple clamping points is uniform and consistent, completely overcoming the defects of uneven force and large pressure difference at various points in traditional clamping devices. It effectively prevents problems such as local overpressure, local false pressure, overall warping deformation, splicing misalignment, and excessive fitting gaps in long strip-shaped segmented workpieces like motor pieces during clamping and positioning, significantly improving the positioning accuracy of motor piece workpieces and the subsequent overall processing and forming quality.

[0014] 2. The ball plunger clamping assembly structure for motor component processing adopts a double-threaded structure with a lower adjusting stud and an upper locking screw, forming an anti-loosening system with upper and lower clamping and locking. The upper locking screw forms a stable axial clamping limit on the lower adjusting stud, which can effectively counteract the reverse elastic thrust generated by the spring over a long period of time. This prevents the adjusting stud from rotating, retracting, or loosening and shifting under equipment vibration and continuous load conditions. It also eliminates the problem of preload attenuation and instability of the clamping state after long-term use. This ensures that the entire clamping assembly structure for motor component processing maintains a constant clamping force and stable working state during long-term mass production operation. It eliminates the need for frequent manual shutdowns for re-inspection and recalibration of preload parameters, significantly reducing the frequency of equipment debugging and downtime, and improving the continuous operation efficiency and working stability of the production line.

[0015] 3. The ball plunger clamping assembly structure for motor plate processing features a two-section structure with upper and lower functional partitions. The smooth holes in the lower section are specifically designed for the insertion and reciprocating sliding of the plunger rod, ensuring simple and smooth assembly alignment and minimizing assembly problems such as misalignment or jamming. The threaded holes in the upper section facilitate the sequential screwing of the adjusting stud and locking screw from top to bottom. The overall structure is compact, well-organized, and clearly layered, with a clear assembly logic for the components. Assembly and debugging are simple and convenient. For later spring maintenance, aging replacement, specification adaptation, and routine maintenance, simply unscrew the upper locking and adjusting parts to directly remove the spring from the top of the cavity for replacement. There is no need to disassemble the main beam or the lower tooling base. The maintenance and disassembly process is simple and convenient, significantly reducing the difficulty of later maintenance and saving maintenance time and operating costs.

[0016] 4. The ball plunger clamping assembly structure for motor plate processing employs a freely rotatable roller-type clamping end at the bottom of the plunger rod. This eliminates the hard contact method of the traditional fixed rigid pressure head, replacing sliding extrusion with rolling contact. During the clamping and bonding process of the motor plate workpiece, the end can adaptively rotate and slide with the slight displacement of the workpiece, significantly reducing the frictional resistance at the contact position. This effectively avoids defects such as scratches, indentations, bumps, and hard extrusion damage on the surface of the motor plate, fully protecting the integrity and appearance quality of the workpiece surface. At the same time, the roller-type end has good adaptive compensation capability, automatically adapting to slight planar undulation errors, segment splicing height differences, and minor shape tolerances on the surface of the motor plate, achieving flexible bonding and uniform clamping. It will not cause local suspension and insecure clamping or local forced extrusion deformation due to slight deviations in the workpiece size, greatly improving the device's adaptability and compatibility with long strip-shaped segmented workpieces of different specifications and surface conditions.

[0017] 5. This ball plunger clamping assembly structure for motor plate processing adopts a purely mechanical structure combination design, without complex drive components such as motors, cylinders, and hydraulic systems. It features a simple and reliable structure, low failure rate, and strong environmental adaptability. It can be adapted to various industrial working conditions such as motor plate machine tool processing, tooling positioning, and segmented mold clamping. The overall components are highly modular, with a neat structure, convenient assembly and disassembly, and good interchangeability. The number of clamping units can be flexibly increased or decreased according to the actual workpiece length requirements. Different clamping force requirements can also be adapted by adjusting the screw insertion depth. It has extremely strong versatility and adaptability, and can meet the multi-point synchronous uniform clamping and positioning needs of various long, segmented motor plate workpieces. It has a wide range of applications, high practical value, and is conducive to industry promotion and application. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a ball plunger clamping assembly structure for motor sheet processing according to the present invention; Figure 2 This is a schematic diagram of the right-side view of a ball plunger clamping assembly structure for motor sheet processing according to the present invention; Figure 3 This is a front sectional view of a ball plunger clamping assembly structure for motor sheet processing according to the present invention; Figure 4 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 3 A three-dimensional image; Figure 5 This is a partial structural separation and cross-sectional view of a ball plunger clamping assembly structure for motor plate processing according to the present invention; Figure 6 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 5 A structural diagram from below; Figure 7 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 2 Enlarged view of point A in the middle; Figure 8 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 3 Enlarged view of point B in the middle; Figure 9 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 5 Enlarged view of point C in the middle; Figure 10 This invention relates to a ball plunger clamping assembly structure for motor lamination processing. Figure 5 Enlarged view of point D in the middle.

[0019] In the diagram: 1. Long strip mounting main beam; 11. Two-section stepped mounting cavity; 111. Lower section plunger guide hole; 112. Upper section threaded adjustment groove; 113. Annular limiting step; 2. Elastic clamping unit; 21. Elastic preload adjusting stud; 211. Hexagonal adjustment groove one; 22. Anti-loosening locking screw; 221. Hexagonal adjustment groove two; 23. Compression elastic spring; 24. Floating plunger rod; 25. Pin shaft; 26. Rolling clamping end; 3. Segmented workpiece bearing seat. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figures 1-10 As shown, the present invention provides a multi-point elastic clamping device with pre-tightening force adjustment and anti-loosening structure, including a long strip mounting main beam 1, multiple sets of elastic clamping units 2, and a segmented workpiece bearing seat 3.

[0022] The long, rigid mounting beam 1 has multiple sets of vertically arranged, two-section stepped mounting cavities 11 evenly distributed along its length. Fixed mounting positions are provided at both ends of the long, rigid mounting beam 1 for fixed assembly with external frame fixtures. The two-section stepped mounting cavities 11 are vertically continuous structures, consisting of a lower plunger guide hole 111 and an upper threaded adjustment groove 112. An annular limiting step 113 is formed between the lower plunger guide hole 111 and the upper threaded adjustment groove 112. The lower plunger guide hole 111 is a smooth circular hole structure, mainly used for vertical sliding guidance of the floating plunger rod 24, facilitating the overall assembly and insertion of the plunger. The upper threaded adjustment groove 112 has internal threads machined on its inner wall for installing matching stud-like parts. The annular limiting step 113 is an annular end face structure that can axially limit the elastic preload adjusting stud 21, restricting its maximum screwing stroke and preventing excessive sinking into the lower plunger guide hole 111.

[0023] The system comprises a two-section stepped mounting cavity 11, a lower plunger guide hole 111, an upper threaded adjustment groove 112, and an annular limiting step 113. The two-section stepped mounting cavity 11 is integrally formed inside the long mounting main beam 1. The lower plunger guide hole 111 allows the floating plunger rod 24 to slide vertically, restricting its movement to reciprocating up and down, thus preventing lateral swaying and jamming. The upper threaded adjustment groove 112, through its internal thread, forms a threaded engagement with the elastic preload adjusting stud 21 and the anti-loosening locking screw 22, facilitating the screwing in and positioning of components. The annular limiting step 113 forms a middle dividing and limiting surface between the upper and lower cavities. After the column 21 is screwed down to the set position, it stops descending when its bottom end fits against the annular limiting step 113, achieving precise mechanical limiting positioning. This structure is functionally divided into upper and lower segmented cavities. The lower segment ensures precise and stable sliding guidance of the floating plunger rod 24, while the upper segment provides a reliable installation position for the threaded adjustment parts. The annular limiting step 113 can uniformly limit the height of multiple sets of elastic pre-tightening adjustment studs 21, so that each set of parts stays at the same reference position. From the structural root, this ensures that the output elastic force of multiple sets of elastic clamping units 2 is uniform and consistent, effectively avoiding problems such as uneven force, warping deformation, and misalignment of long strip-shaped segmented workpieces like motor plates, and significantly improving the workpiece positioning accuracy and overall processing quality.

[0024] Multiple sets of elastic clamping units 2 are evenly arranged along the length of the long strip mounting main beam 1, and are assembled one-to-one inside each set of two-section stepped mounting cavities 11; each set of elastic clamping units 2 is assembled from top to bottom with an anti-loosening locking screw 22, an elastic pre-tightening adjusting screw 21, a compression elastic spring 23, a floating plunger rod 24, and a rolling clamping end 26.

[0025] The structure features an elastic preload adjusting stud 21 and an internal hexagonal adjustment groove 211. During operation, tools are used in conjunction with the internal hexagonal adjustment groove 211 to rotate and lift the elastic preload adjusting stud 21 within the upper threaded adjustment groove 112. By controlling the screw depth, the initial compression of the compression spring 23 is precisely changed. Simultaneously, all elastic preload adjusting studs 21 can be limited to the same height position by the annular limiting step 113, ensuring that the preload stroke of each group of compression springs 23 remains uniform. This structure is simple to operate and easy to adjust, allowing for flexible and precise adjustment of the spring preload and uniform control of the elastic clamping force at each group of points. It has high adjustment consistency and can adapt to the corresponding clamping force requirements according to the working conditions of different motor blades. The structure is highly versatile, significantly reducing the difficulty of on-site adjustment and improving the efficiency of tooling debugging.

[0026] The elastic preload adjusting stud 21 is a short external thread stud structure that matches the internal thread of the upper thread adjusting groove 112. The top of the elastic preload adjusting stud 21 has an internal hexagonal adjustment groove 211 for easy tool screwing and adjustment. The lower end of the elastic preload adjusting stud 21 can abut against the annular limiting step 113. By controlling the screwing depth, the pre-compression of the compression elastic spring 23 can be changed to achieve uniform adjustment of the clamping force.

[0027] The anti-loosening locking screw 22 is an externally threaded long rod structure with the same thread specification as the elastic preload adjusting stud 21. The top of the anti-loosening locking screw 22 has an internal hexagonal adjustment groove 221. The anti-loosening locking screw 22 is screwed into the upper threaded adjustment groove 112 and located above the elastic preload adjusting stud 21. The lower end face is pressed against the upper end face of the elastic preload adjusting stud 21 to achieve axial locking and prevent loosening, thus preventing the threads from turning back and loosening due to the spring force.

[0028] The anti-loosening locking screw 22 and the internal hexagonal adjustment groove 221 are designed to prevent the locking screw 22 from being screwed into the upper threaded adjustment groove 112. After rotating downwards, the locking screw 22 is tightly pressed against the upper end of the elastic preload adjusting stud 21, forming a reliable axial tightening limit. This effectively restricts the elastic preload adjusting stud 21 from being loosened due to the reverse elastic force of the compressed elastic spring 23 and the vibration of the equipment. This ensures that the elastic preload adjusting stud 21 always maintains the set installation position without displacement. This structure forms a double locking and anti-loosening system with upper and lower cooperation, which can effectively counteract the loosening tendency caused by the spring rebound force and the vibration of the working condition. During long-term use, the clamping force will not decrease and the position of the parts will not shift. There is no need for frequent machine stoppages for inspection and readjustment, which greatly reduces the downtime for debugging, improves the stability of equipment operation and the continuity of production, and is suitable for the batch continuous processing of motor parts.

[0029] The compression spring 23 is installed inside the two-stage stepped mounting cavity 11. The upper end of the compression spring 23 abuts against the bottom end of the elastic preload adjusting stud 21, and the lower end of the compression spring 23 abuts against the upper end of the floating plunger rod 24, providing a constant elastic clamping force for the overall clamping action.

[0030] In this system, when the fixture moves downwards along the frame to clamp the workpiece using the compression spring 23 and floating plunger rod 24, the rolling clamping end 26 receives a reverse support force after contacting the workpiece surface. This force pushes the floating plunger rod 24 upwards along the lower plunger guide hole 111, causing it to compress the compression spring 23 and produce elastic compression deformation. When the workpiece is finished and the clamping state is released, the compression spring 23 uses its own elastic rebound force to push the floating plunger rod 24 and the rolling clamping end 26 downwards to reset, completing one complete clamping and resetting cycle. The compression spring 23 can output a uniform and gentle elastic clamping force, achieving a flexible buffer clamping mode and completely avoiding the local compression deformation of the motor piece caused by the traditional rigid clamping method. The floating plunger rod 24 relies on the high-precision guidance of the lower plunger guide hole 111, ensuring smooth and centered force transmission, stable operation without shaking, and uniform and stable force distribution at multiple points, perfectly meeting the requirements of multi-point synchronous flexible clamping of segmented workpieces such as motor pieces.

[0031] The floating plunger rod 24 is vertically assembled inside the lower plunger guide hole 111 and can float and slide linearly up and down along the hole. The bottom groove of the floating plunger rod 24 is hinged to the rolling pressing end 26 by the pin 25.

[0032] The pin 25 passes through the slot at the bottom of the floating plunger rod 24 and the wheel hole of the rolling clamping end 26. It serves as both a hinge shaft to reliably fix the rolling clamping end 26 to the end of the floating plunger rod 24, preventing it from falling off or shifting during operation, and a rotation axis to allow the rolling clamping end 26 to rotate freely around it, maintaining rolling contact characteristics to reduce friction and protect the workpiece surface. At the same time, the detachable pin structure facilitates quick disassembly and replacement of the rolling clamping end 26 without disassembling the plunger rod body, simplifying the maintenance process.

[0033] The rolling clamping end 26 adopts a roller-type rotatable structure, which can rotate freely and form rolling contact with the surface of the workpiece to be clamped, reducing friction damage and adapting to the slight height difference of the workpiece surface.

[0034] Among them, the rolling clamping end 26 is fixedly installed at the bottom end of the floating plunger rod 24. During the process of pressing and adhering to the surface of the motor piece, the rolling clamping end 26 can rotate freely and can adapt to the slight sliding displacement and height undulation of the workpiece surface to achieve flexible contact with the workpiece surface. By using rolling contact instead of the traditional hard sliding friction contact method, the frictional resistance at the contact position can be greatly reduced, effectively preventing scratches, indentations and bumps on the workpiece surface, and protecting the appearance quality of the workpiece surface. At the same time, the rolling clamping end 26 has good adaptive compensation capability, which can automatically adapt to the slight height error of the motor piece surface and the height difference of the segment splicing position, resulting in good adhesion and clamping effect. It can be compatible with motor piece workpieces of various specifications and different surface conditions, and the device has a wider range of applications.

[0035] The segmented workpiece support 3 is arranged directly below all the elastic clamping units 2. The segmented workpiece support 3 is composed of multiple independent modules spliced ​​together. Each module corresponds to the clamping position of a set of elastic clamping units 2, which is used to support and place segmented workpieces such as motor plates.

[0036] The pin 25 passes through the slot at the bottom of the floating plunger rod 24 and the wheel hole of the rolling clamping end 26. It serves as both a hinge shaft to achieve a fixed connection between the two and a rotation axis to allow the rolling clamping end 26 to rotate freely around it.

[0037] The segmented workpiece support 3 is composed of multiple modules, each module corresponding to the pressing position of a set of elastic pressing units 2.

[0038] During operation, the working process of this device is divided into three steps: pre-tightening adjustment, clamping and positioning, and inspection and replacement. First, perform pre-tightening adjustment. First, place the compression spring 23 into the two-stage stepped mounting cavity 11, then screw the elastic pre-tightening adjusting stud 21 into the upper threaded adjusting groove 112. Adjust the screwing using the internal hexagonal adjusting groove 211. The elastic pre-tightening adjusting stud 21 will stop descending after it reaches the annular limiting step 113. Control the screwing depth of each set of elastic pre-tightening adjusting studs 21 to ensure that the pre-compression stroke of all compression springs 23 is consistent, and to ensure that the initial tightening force at each point is uniform. After adjustment, screw the anti-loosening locking screw 22 into the upper threaded adjusting groove 112 and press it to lock it above the elastic pre-tightening adjusting stud 21. This prevents the elastic pre-tightening adjusting stud 21 from rotating and loosening due to the spring's rebound force, and ensures a stable pre-tightening state. During clamping and positioning, the long strip mounting main beam 1 moves down with the frame, causing the bottom end of the floating plunger rod 24 to first contact the surface of the motor piece workpiece on the segmented workpiece bearing seat 3 via the rolling clamping end 26 hinged to the pin 25. After the workpiece is subjected to clamping force, it generates a reverse force, pushing the floating plunger rod 24 to slide smoothly upward along the lower plunger guide hole 111, further compressing the elastic spring 23. The compressed elastic spring 23 generates a uniform elastic reaction force, which is stably transmitted to the rolling clamping end 26 through the floating plunger rod 24, realizing multi-point synchronous flexible clamping of the motor piece. The rolling clamping end 26 can rotate freely around the pin 25, effectively reducing the frictional resistance with the workpiece surface, protecting the surface of the motor piece from scratches, and adaptively compensating for minor errors in the workpiece plane to ensure clamping fit. When the compression spring 23 needs to be repaired or replaced, simply unscrew the anti-loosening locking screw 22 and the elastic preload adjusting screw 21 in sequence, and the compression spring 23 can be directly taken out from the upper part of the two-section stepped mounting cavity 11. There is no need to disassemble the long strip mounting main beam 1 and other structures of the whole machine. Disassembly and maintenance are very simple, greatly reducing maintenance time.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ball plunger clamping assembly structure for machining motor plates, characterized in that, include: The long strip mounting main beam (1), multiple sets of elastic clamping units (2) and segmented workpiece bearing seats (3) are provided. The long strip mounting main beam (1) has multiple sets of two-section stepped mounting cavities (11) evenly opened along the length direction. The elastic clamping units (2) are installed in the two-section stepped mounting cavities (11). The segmented workpiece support (3) is located below the elastic clamping unit (2) and is composed of multiple modules spliced ​​together.

2. The ball plunger clamping assembly structure for motor sheet processing according to claim 1, characterized in that, The two-section stepped mounting cavity (11) includes a lower section plunger guide hole (111), an upper section threaded adjustment groove (112), and an annular limiting step (113) located between the two.

3. The ball plunger clamping assembly structure for motor sheet processing according to claim 2, characterized in that, The elastic clamping unit (2) is installed in the two-section stepped installation cavity (11). The elastic clamping unit (2) is provided with an anti-loosening locking screw (22), an elastic pre-tightening adjusting screw (21), a compression elastic spring (23), a floating plunger rod (24), and a rolling clamping end (26) from top to bottom.

4. The ball plunger clamping assembly structure for motor sheet processing according to claim 3, characterized in that, The elastic preload adjusting stud (21) is threadedly engaged with the upper threaded adjusting groove (112). The top of the elastic preload adjusting stud (21) is provided with an internal hexagonal adjusting groove (211). The lower end of the elastic preload adjusting stud (21) can be limited and abutted against the annular limiting step (113).

5. The ball plunger clamping assembly structure for motor sheet processing according to claim 4, characterized in that, The anti-loosening locking screw (22) is screwed into the upper thread adjustment groove (112) and pressed against the upper end of the elastic pre-tightening adjustment stud (21). The top of the anti-loosening locking screw (22) is provided with an internal hexagonal adjustment groove (221).

6. The ball plunger clamping assembly structure for motor sheet processing according to claim 5, characterized in that, The floating plunger rod (24) is slidably assembled in the lower plunger guide hole (111), and the bottom groove of the floating plunger rod (24) is hinged with a rolling pressing end (26) by a pin (25).

7. The ball plunger clamping assembly structure for motor sheet processing according to claim 6, characterized in that, The pin (25) passes through the slot at the bottom of the floating plunger rod (24) and the wheel hole of the rolling pressing end (26), serving as both a hinge shaft to achieve a fixed connection between the two and a rotation axis to allow the rolling pressing end (26) to rotate freely around it.

8. The ball plunger clamping assembly structure for motor sheet processing according to claim 1, characterized in that, The segmented workpiece support (3) is composed of multiple modules spliced ​​together, and each module corresponds to the pressing position of a set of elastic pressing units (2).

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