Multi-axis eccentric shaft counterweight structure and method

Abstract

The invention provides a multi-axis eccentric shaft counterweight structure and method, and relates to the technical field of eccentric shaft machining. The multi-axis eccentric shaft balance weight structure comprises a balance weight disc connected with a shaft end chuck of an eccentric shaft, a center adjusting disc connected with the chuck and a center adjusting block detachably connected with the center adjusting disc, the center adjusting block comprises a center adjusting hole coaxial with the axes of different shaft sections, and the center adjusting hole is used for being connected with an ejector pin of a lathe in an inserted mode.

Description

Technical Field

[0001] This invention relates to the field of eccentric shaft machining technology, and more specifically, to a multi-axis eccentric shaft counterweight structure and method. Background Technology

[0002] Multi-axis eccentric shafts play a crucial role in mechanical manufacturing, and their machining quality directly affects the operational performance and lifespan of equipment. Due to their structural characteristics, the positioning accuracy of each axis, as well as the coaxiality and roundness of the outer diameters, require extremely stringent standards. Especially during precision turning and grinding processes, it is essential to ensure the workpiece rotates smoothly on the lathe or grinding machine, avoiding vibration and misalignment caused by unbalanced forces. To achieve high-precision machining, the accuracy of the center hole positioning is paramount; any minute deviation can lead to cumulative errors and product defects. Therefore, when machining the relevant outer diameters of each axis, effective counterweight treatment is necessary to counteract the inertial forces generated by eccentricity and maintain rotational stability.

[0003] However, current counterweight methods in the manufacturing industry have significant shortcomings. For eccentric shafts with large weight and significant eccentric inertia, such as those commonly found in heavy industrial equipment, these shafts typically require large center hole sizes, leading to positioning inaccuracies and increased workpiece wobbling during machining, ultimately affecting surface quality and dimensional accuracy. Summary of the Invention

[0004] The problem this invention addresses is: how to improve the machining efficiency and product reliability of eccentric shafts with large weight and large eccentric inertia.

[0005] To address the aforementioned problems, this invention provides a multi-axis eccentric shaft counterweight structure, comprising a counterweight disc connected to a chuck at the shaft end of the eccentric shaft, a self-aligning disc connected to the chuck, and self-aligning blocks detachably connected to the self-aligning disc. The self-aligning blocks are multiple and selectively mounted on the self-aligning disc. Each of the multiple self-aligning blocks has a self-aligning hole coaxial with the shaft center of different segments of the eccentric shaft, and the self-aligning hole is used for insertion into a lathe's centering pin.

[0006] Optionally, the multi-axis eccentric shaft counterweight structure further includes multiple counterweight plates, each of which is detachably connected to the counterweight disk.

[0007] Optionally, the self-aligning block is detachably connected to the self-aligning plate via a wedge.

[0008] Optionally, a positioning groove is provided at the end of the self-aligning plate away from the chuck, and the self-aligning block is fixed in the positioning groove by a wedge block.

[0009] Optionally, the outer diameter of the chuck is larger than the outer diameter of the self-aligning disc, and the counterweight disc is connected to the self-aligning disc via a connecting block.

[0010] Optionally, the self-aligning plate further includes a mounting groove corresponding to the connecting block, and the two ends of the connecting block are respectively connected to the mounting groove and the counterweight plate by bolts.

[0011] Optionally, the chuck includes a connection hole facing the self-aligning disc, and the shoulder of the self-aligning disc is connected within the connection hole.

[0012] Optionally, the positioning groove includes a first region corresponding to the self-aligning block, a second region adjacent to and connected to the first region, and a third region. A first wedge is provided in the second region, and a second wedge is provided in the third region. The first wedge, the second wedge, and the first region position the self-aligning block.

[0013] Compared with the prior art, the multi-axis eccentric shaft counterweight structure of the present invention, Another aspect of the present invention provides a multi-axial eccentric shaft counterweight method, based on the multi-axial eccentric shaft counterweight structure as described above, characterized by comprising the following steps: Step 1: Reserve chucks at both ends of the eccentric shaft, install counterweights on the circumferential end faces of the chucks, and install self-aligning discs on the axial end faces of the chucks opposite to the eccentric shaft. Step 2: Install self-aligning blocks on the end face of the self-aligning plate away from the chuck. Each self-aligning block includes a self-aligning hole corresponding to the center of a different shaft segment of the eccentric shaft.

[0014] Optionally, the multi-axis eccentric shaft counterweight method further includes step three: based on the theoretical thickness of the counterweight plate calculated by three-dimensional software, matching the corresponding counterweight plate and connecting the counterweight plate to the self-aligning plate.

[0015] Compared with existing technologies, the multi-axis eccentric shaft counterweight method of the present invention can balance the eccentric inertia of the eccentric shaft through a counterweight plate installed on the chuck. It allows for the development of a counterweight scheme suitable for actual use based on the different sizes of the eccentric shaft, meeting the counterweight requirements of various eccentric shafts. This ensures smooth rotation of the workpiece during processing, especially for large, heavy eccentric shafts, demonstrating wide applicability. Through the self-aligning plate and detachably connected self-aligning blocks, as well as the self-aligning holes on the self-aligning blocks that are coaxial with the shaft centers of different sections, the self-aligning plate has the characteristics of being shared by multiple shafts and usable in multiple projects. While meeting the machining accuracy requirements of the eccentric shaft, it can save manufacturing costs and achieve precise and rapid positioning of each shaft center of the multi-axis eccentric shaft. Thus, when machining eccentric shafts with large weight, large eccentric inertia, and large center hole sizes, the self-aligning blocks can be accurately positioned, and the counterweight plate can balance the eccentric inertia, thereby improving machining accuracy and production efficiency. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the multi-axis eccentric shaft counterweight structure in an embodiment of the present invention; Fig. 2 This is a schematic diagram of the self-aligning disc in an embodiment of the present invention; Fig. 3 This is a schematic diagram of the self-aligning block assembled on the self-aligning plate in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1-Eccentric shaft; 2-Clamping head; 3-Counterweight plate; 4-Aligning plate; 41-Positioning groove; 411-First area; 412-Second area; 413-Third area; 42-Mounting groove; 5-Aligning block; 6-Counterweight plate; 7-Connecting block. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] In the accompanying drawings, the X-axis represents the horizontal position, with the positive direction of the X-axis indicating the left and the negative direction indicating the right; the Y-axis represents the front-to-back position, with the positive direction of the Y-axis indicating the front and the negative direction indicating the back; and the Z-axis represents the vertical position, with the positive direction of the Z-axis indicating the top and the negative direction indicating the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0021] Combination Figs. 1-3 As shown, this embodiment of the invention provides a multi-axis eccentric shaft counterweight structure, including a counterweight plate 3 connected to a shaft end chuck 2 of the eccentric shaft 1, a self-aligning plate 4 connected to the chuck 2, and self-aligning blocks 5 detachably connected to the self-aligning plate 4. The self-aligning blocks 5 are multiple and are selectively installed on the self-aligning plate 4. The multiple self-aligning blocks 5 each have self-aligning holes coaxial with the shaft centers of different shaft segments of the eccentric shaft 1. The self-aligning holes are used for insertion with the center pin of a lathe.

[0022] Specifically, the counterweight plate 3 can be designed as a ring structure, with its inner diameter matching the outer diameter of the chuck 2. It can be mounted on the chuck 2 via an interference fit. The self-aligning plate 4 can be designed as a disc-shaped structure, with one end contacting the axial end face of the chuck 2 and fixed by bolts or pins. The self-aligning block 5 can be designed as a block with a specific shape, and its mating surface with the self-aligning plate 4 can be detachably connected by bolts or a quick-locking mechanism. For example, the self-aligning block 5 can be directly fixed to the end face of the self-aligning plate 4 by a set of bolts, or quick insertion and removal and fixing can be achieved through mechanical structures such as dovetail grooves. Multiple self-aligning blocks 5 each have self-aligning holes coaxial with the axis of different shaft segments. That is, for each shaft segment of the eccentric shaft 1 that needs to be machined, a self-aligning block 5 with a self-aligning hole corresponding to the axis position is made. That is, each self-aligning hole corresponds to a specific shaft segment center of the eccentric shaft 1. When a self-aligning block 5 is installed on the self-aligning plate 4, the self-aligning hole corresponding to the self-aligning block 5 is coaxial with the specific shaft segment center of the eccentric shaft 1. The inner wall of the self-aligning hole is machined to match the shape and size of the lathe center, for example, it can be machined into a standard Morse taper hole or a cylindrical hole. When the eccentric shaft 1 needs to be machined, the lathe center is inserted into the self-aligning hole of the self-aligning block 5 to achieve initial fixation of the eccentric shaft 1, and then the counterweight plate 3 is adjusted to balance the eccentric inertia of the current eccentric shaft segment. When the next eccentric shaft segment needs to be machined, the corresponding self-aligning block 5 is replaced, and then the position of the counterweight plate 3 is readjusted.

[0023] Therefore, in this embodiment, the counterweight plate 3 installed on the chuck 2 can balance the eccentric inertia of the eccentric shaft 1, so as to formulate a counterweight scheme suitable for actual use according to the size difference of different eccentric shafts 1, meet the counterweight requirements of various different eccentric shafts 1, and thus ensure that the workpiece rotates smoothly during the processing, especially for large eccentric shafts with heavy weight, which has a wide range of applicability. Through the self-aligning plate 4 and the detachably connected self-aligning block 5, and the self-aligning hole on the self-aligning block 5 that is coaxial with the shaft center of different shaft segments, the self-aligning plate 4 has the characteristics of being shared by multiple shafts and can be used for multiple projects. While meeting the machining accuracy of eccentric shafts, it can save manufacturing costs and realize the precise and rapid positioning of each shaft center of multi-axis eccentric shafts. In this way, when machining eccentric shafts with heavy weight, large eccentric inertia and large center hole size, the self-aligning block 5 can be accurately positioned, and the counterweight plate 3 can balance the eccentric inertia, thereby improving machining accuracy and production efficiency.

[0024] Optionally, combined Fig. 1 As shown, the multi-axis eccentric shaft counterweight structure also includes multiple counterweight plates 6, each of which is detachably connected to the counterweight disk 3.

[0025] Specifically, the counterweight plate 6 can be made of metal sheets of different thicknesses and materials, such as steel plates, lead plates, or tungsten alloy plates, to provide different unit masses, thereby achieving coarse and fine adjustments to the total counterweight. Multiple counterweight plates 6 can be stacked to achieve more precise weight adjustments. For example, the counterweight plate 6 can be fixed to the counterweight disk 3 using fasteners such as bolts and screws, and can be disassembled using tools.

[0026] Thus, by setting multiple counterweight plates 6, and with each counterweight plate 6 detachably connected to the counterweight disk 3, different numbers of counterweight plates 6 can be flexibly selected and combined according to the actual eccentric inertia requirements of the eccentric shaft 1, thereby achieving precise adjustment of the total counterweight. In this way, when the counterweight needs to be changed, it is not necessary to replace the entire counterweight disk 3; only adding, removing, or replacing some counterweight plates 6 is required. This significantly improves the convenience and efficiency of adjustment, better adapting to the counterweight requirements of multi-axis eccentric shafts 1 of different models and eccentricities, and avoiding processing vibration and accuracy reduction problems caused by improper counterweighting.

[0027] Optionally, the self-aligning block 5 is detachably connected to the self-aligning plate 4 via a wedge.

[0028] Specifically, the implementation of the wedge can be achieved in two ways, including but not limited to the following: one way is to form a tight fit between the self-aligning block 5 and the self-aligning plate 4 by one or more independent wedges, and to press the wedges together by external fasteners (such as bolts) or by direct hammering, thereby achieving a firm fixation of the self-aligning block 5; the other way is to directly machine a beveled structure on the mating surface of the self-aligning block 5 or the self-aligning plate 4, and to generate a wedge clamping force by the interaction of the bevels through the relative movement or rotation between the two, thereby achieving a detachable connection.

[0029] Thus, the self-aligning block 5 is detachably connected to the self-aligning plate 4 via a wedge. The wedge's wedging action generates a strong clamping force, effectively resisting the centrifugal force, vibration, and impact generated by the eccentric shaft during high-speed rotation and heavy-load machining. This prevents the self-aligning block 5 from loosening or shifting, thereby ensuring the precise positioning of the self-aligning hole. This allows the lathe center to always accurately support the eccentric shaft, avoiding problems such as decreased machining accuracy and unstable workpiece rotation caused by loosening of the self-aligning block.

[0030] Optionally, combined Figs. 2-3 As shown, the end of the self-aligning disc 4 facing away from the chuck 2 is provided with a positioning groove 41, and the self-aligning block 5 is fixed in the positioning groove 41 by a wedge block.

[0031] Specifically, the positioning groove 41 can be designed as a recess that matches the outer contour of the self-aligning block 5. For example, it can be a rectangular groove with a specific width and depth, or a V-shaped groove, to ensure that the self-aligning block 5 can be tightly embedded therein.

[0032] Thus, by providing a positioning groove 41 at the end of the self-aligning plate 4 away from the chuck 2, a clear and precise installation reference is provided for the self-aligning block 5, effectively avoiding the problem of inaccurate positioning that may occur during installation. At the same time, the self-aligning block 5 is firmly fixed in the positioning groove 41 by using a wedge. The wedge action generates a strong clamping force, ensuring that the self-aligning block 5 will not loosen or shift when rotating at high speed or bearing cutting forces, further improving the stability of the self-aligning block 5, so as to ensure the center hole positioning accuracy and rotational smoothness of the eccentric shaft 1 during machining on a lathe or grinding machine.

[0033] Optionally, the outer diameter of the chuck 2 is larger than the outer diameter of the self-aligning plate 4, and the counterweight plate 3 and the self-aligning plate 4 are connected by a connecting block 7.

[0034] Specifically, the self-aligning disc 4 can be partially or completely covered or supported by the edge of the chuck 2 during installation. Alternatively, the chuck 2 can include a flange or shoulder structure with an outer diameter larger than that of the self-aligning disc 4, thereby forming a stable bearing surface during axial connection. The connecting block 7 can be designed as a plate-like structure with bolt holes, which is fixed to the counterweight disc 3 and the self-aligning disc 4 respectively by bolts.

[0035] Thus, by using a chuck 2 with an outer diameter larger than that of the self-aligning disc 4, the chuck 2 provides a wider and more stable support base for the self-aligning disc 4. This ensures that the self-aligning disc 4 receives sufficient support during installation, effectively reducing vibration and displacement that may occur during high-speed rotation or heavy-load machining, thereby significantly enhancing the stability and rigidity of the entire counterweight structure. The counterweight disc 3 and the self-aligning disc 4 are connected via a connecting block 7, rather than a direct connection. This allows operators to easily disassemble or replace the connecting block 7 when adjusting the counterweight or performing maintenance, without having to disassemble the entire counterweight disc 3 or self-aligning disc 4. This greatly simplifies the operation process and improves the efficiency of counterweight adjustment and the convenience of maintenance.

[0036] Optionally, combined Figs. 2-3 As shown, the self-aligning plate 4 also includes a mounting groove 42 corresponding to the connecting block, and the two ends of the connecting block 7 are connected to the mounting groove 42 and the counterweight plate 3 respectively by bolts.

[0037] Specifically, the mounting groove 42 can be designed as a recess that matches the cross-sectional shape of the connecting block 7, such as a rectangular groove, a T-shaped groove, or a dovetail groove, to accommodate the shape of the connecting block 7. Furthermore, the depth and width of the mounting groove 42 can be optimized according to the size of the connecting block 7 and the required connection strength to ensure that the connecting block 7 can be stably embedded and effectively resist shear forces or torques that may be generated during processing. Simultaneously, both ends of the connecting block 7 are connected to the mounting groove 42 and the counterweight plate 3 respectively by bolts. That is, the bolt can pass through the pre-drilled hole on the connecting block 7, with one end screwed into the self-aligning plate 4 (with a pre-drilled threaded hole at the bottom or side wall of the mounting groove 42), and the other end screwed into the pre-drilled threaded hole on the counterweight plate 3. Alternatively, the bolt can pass through the through holes of the connecting block 7, the mounting groove 42, and the counterweight plate 3, and then be tightened from the other side using a nut.

[0038] Thus, by setting mounting grooves 42 on the self-aligning plate 4 corresponding to the connecting block 7, the mounting grooves 42 provide precise positioning and accommodating space for the connecting block 7, ensuring that the connecting block 7 can be accurately aligned and stably embedded on the self-aligning plate 4, effectively preventing the connecting block 7 from shifting or loosening during operation. Furthermore, by using bolts to connect both ends of the connecting block 7 to the mounting grooves 42 and the counterweight plate 3 respectively, the detachable fastening characteristics of the bolts not only ensure the strength and reliability of the connection but also greatly improve the convenience of installation and disassembly. This makes the connection between the counterweight plate 3 and the self-aligning plate 4 more stable and reliable, enhancing the rigidity of the overall counterweight structure, thereby effectively solving the problem of unstable fixing of the connecting block, ensuring the smooth rotation and high precision requirements of the multi-axis eccentric shaft during processing, and improving operating efficiency and processing quality.

[0039] Optionally, the chuck 2 includes a connection hole facing the self-aligning disc 4, and the shoulder of the self-aligning disc 4 is connected in the connection hole.

[0040] Specifically, the connecting hole can be designed as a cylindrical hole, with its inner diameter tightly fitting the outer diameter of the shoulder of the self-aligning disc 4. The shoulder can also be designed as a cylindrical shoulder, with its outer diameter tightly fitting the inner diameter of the connecting hole. A secure connection can be achieved through pressing, threaded connection, or pin fixing. Alternatively, the shoulder can be designed as a tapered shoulder, matching the taper of the connecting hole. This allows for a tight connection and precise radial positioning through axial force, effectively preventing the self-aligning disc 4 from loosening or shifting during machining.

[0041] Thus, the shoulder of the self-aligning disc 4 is connected to the connecting hole on the chuck 2 facing the self-aligning disc 4. The connecting hole on the chuck 2 provides a precise accommodating space for the shoulder of the self-aligning disc 4, which can be tightly embedded in the connecting hole. This allows the annular or stepped structure of the shoulder to form multiple contact surfaces with the inner wall of the connecting hole, significantly enhancing the mechanical stability and positioning accuracy of the connection. Therefore, during high-precision machining processes such as precision turning and precision grinding of the eccentric shaft 1, the self-aligning disc 4 can be precisely and firmly fixed on the chuck 2, effectively avoiding the problem of unstable workpiece rotation caused by unstable connection or inaccurate positioning.

[0042] Optionally, combined Figs. 2-3 As shown, the positioning groove 41 includes a first region 411 corresponding to the self-aligning block 5, a second region 412 adjacent to and connected to the first region 411, and a third region 413. A first wedge is provided in the second region 412, and a second wedge is provided in the third region 413. The first wedge, the second wedge and the first region 411 position the self-aligning block 5.

[0043] Specifically, the first region 411 provides a basic placement and alignment reference for the self-aligning block 5. The first region 411 can be designed as a groove matching the shape of the self-aligning block 5, such as a rectangular groove or a V-groove, to achieve a tight fit. Alternatively, the first region 411 can be a plane or curved surface with a specific geometry, restricting some degrees of freedom by contacting the corresponding surface of the self-aligning block 5. The second region 412 and the third region 413 can be designed as grooves extending on the same plane as the first region 411, or communicating with the first region 411 at different depths. The second region 412 and the third region 413 can have specific geometries, such as inclined surfaces or stepped surfaces, to guide and support the insertion and fixation of the wedge. During installation, the first wedge contacts the corresponding surface of the self-aligning block 5 through its inclined surface, generating a component force when stressed, pushing the self-aligning block 5 in a specific direction, thereby providing a clamping force in one direction. The first wedge can then be fixed to the bottom or side wall of the second region 412 by screws or pins. Similar to the first wedge, the second wedge provides clamping force in another direction by contacting the corresponding surface of the self-aligning block 5 on the other side or in another direction with its inclined surface, forming a multi-directional constraint with the first wedge. The second wedge can be fixed to the bottom or side wall of the third region 413 by screws or pins, with its inclined surface facing the self-aligning block 5.

[0044] Thus, the positioning groove 41 is subdivided into a first region 411, a second region 412, and a third region 413. A first wedge and a second wedge are respectively set in the second region 412 and the third region 413. This allows the self-aligning block 5 to not only have a basic positioning surface (first region 411) in the positioning groove 41, but also to apply clamping force from different directions through the two wedges. This significantly enhances the fixing stability and rigidity of the self-aligning block 5 and effectively avoids displacement or loosening of the self-aligning block 5 during the machining of the eccentric shaft.

[0045] Another embodiment of the present invention provides a multi-axis eccentric shaft counterweight method, based on the aforementioned multi-axis eccentric shaft counterweight structure, characterized by comprising the following steps: Step 1: Reserve chucks 2 at both ends of the eccentric shaft 1, install counterweight discs 3 on the circumferential end face of the chucks 2, and install self-aligning discs 4 on the axial end face of the chucks 2 away from the eccentric shaft 1.

[0046] Specifically, the pre-installed chuck 2 can be implemented in various ways. For example, the chuck structure can be integrally formed during the manufacturing process of the eccentric shaft 1, or standard interfaces can be formed at both ends of the eccentric shaft 1 through machining to facilitate the subsequent installation of independent chuck components. A counterweight plate 3 is installed on the circumferential end face of the chuck 2 to balance the centrifugal force generated by the eccentric shaft 1 during rotational machining. For example, the counterweight plate 3 can be directly fixed to the circumferential end face of the chuck 2 using fasteners such as bolts, pins, or rivets. Then, the self-aligning plate 4 can be assembled onto the axial end face of the chuck 2 through a threaded connection.

[0047] Step 2: Install self-aligning blocks 5 on the end face of the self-aligning plate 4 away from the chuck 2. Each self-aligning block 5 includes a self-aligning hole corresponding to the center of a different shaft segment of the eccentric shaft 1.

[0048] Specifically, the self-aligning block 5 is directly fixed to the end face of the self-aligning plate 4 using bolts or fasteners. Each self-aligning block 5 includes a self-aligning hole corresponding to the axis of different shaft segments. Each self-aligning hole can be inserted into the center of a lathe or grinding machine to ensure the coaxiality and roundness of the workpiece during processing.

[0049] Thus, by pre-installing chucks 2 at both ends of the eccentric shaft 1, a solid foundation is provided for the installation of the entire counterweight structure. Secondly, installing a counterweight plate 3 on the circumferential end face of the chuck 2 effectively balances the eccentric inertia of the eccentric shaft 1, significantly reducing vibration during machining and thus improving machining stability. Furthermore, installing a self-aligning plate 4 on the axial end face of the chuck 2 away from the eccentric shaft 1 provides stable support for subsequent precise self-aligning operations. Finally, installing a self-aligning block 5 with self-aligning holes on the self-aligning plate 4 enables precise center positioning of different shaft segments of the eccentric shaft 1, and through its insertion with the lathe center, ensures coaxiality and roundness during machining. In this way, through an orderly installation sequence and precise component positioning, the problems of inconsistent counterweight methods and insufficient machining accuracy for large-size and high-eccentric-inertia shafts are effectively solved, significantly improving the machining accuracy and efficiency of multi-axis eccentric shafts.

[0050] Optionally, the multi-axis eccentric shaft counterweight method also includes step three: based on the theoretical thickness of the counterweight plate calculated by three-dimensional software, matching the corresponding counterweight plate 6 and connecting the counterweight disk 3 with the self-aligning disk 4.

[0051] Specifically, the theoretical thickness of the counterweight plate needs to be calculated using 3D software. For example, professional CAD / CAE software such as SolidWorks, CATIA, or ANSYS can be used to create 3D models of components such as the eccentric shaft 1, chuck 2, counterweight plate 3, self-aligning plate 4, and self-aligning block 5. By setting the material density, geometric dimensions, and eccentricity in the software, center of gravity analysis and inertia calculations are performed to obtain the theoretical mass and distribution of the counterweight plate 6 required to maintain balance at a specific rotational speed, and then converting it into a theoretical thickness.

[0052] Secondly, appropriate counterweight plates 6 need to be used. This step involves selecting or combining actual counterweight plates 6 based on the theoretical thickness calculated in the previous step to achieve precise weight distribution. The purpose is to translate theoretical calculations into practical operation, ensuring that the physical properties of the counterweight plates 6 match the calculation requirements. For example, a series of standardized counterweight plates 6 with different thicknesses and masses can be prepared in advance. After obtaining the theoretical thickness, the counterweight plate 6 closest to or capable of achieving the theoretical thickness through combination is selected from these standardized counterweight plates 6. For example, if the theoretical thickness is X, a single counterweight plate 6 with thickness X can be selected, or two counterweight plates 6 with thicknesses X1 and X2 (X1+X2≈X) can be combined. Alternatively, counterweight plates 6 of the corresponding thickness can be custom-made based on the calculated theoretical thickness to achieve the most precise weight distribution.

[0053] Finally, the counterweight plate 3 and the self-aligning plate 4 are connected by a connecting block 7, and both ends of the connecting block 7 are connected to the mounting groove 42 and the counterweight plate 3 by bolts, respectively. After the counterweight plate 6 is properly fitted and fixed on the counterweight plate 3, the counterweight plate 3 and the self-aligning plate 4 can be tightly connected by the connecting block 7 and bolts.

[0054] Thus, by calculating the theoretical thickness of the counterweight plate using 3D software, the powerful computing capabilities and simulation technology of computers can be fully utilized to accurately analyze the eccentricity, mass distribution, and required balancing torque of the eccentric shaft 1. This yields the ideal mass and thickness of the counterweight plate 6, greatly improving the scientific rigor and accuracy of the counterweight scheme and avoiding errors caused by manual estimation or experience-based judgment. Based on this, by matching the appropriate counterweight plate 6, a high degree of consistency between the actual counterweight and the theoretical calculation results is ensured, resulting in a more precise counterweight effect. Furthermore, the counterweight plate 3 and the self-aligning plate 4 are securely connected, ensuring the structural stability of the entire counterweight assembly during processing and preventing counterweight failure or accuracy reduction due to loose connections. This allows the eccentric shaft to achieve smoother rotation during precision turning and grinding processes, significantly improving the positioning accuracy of each axis and the coaxiality and roundness of the outer circles, ultimately guaranteeing the processing quality and performance of the eccentric shaft.

[0055] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A poly-axial eccentric shaft counterweight structure, characterized by, The eccentric shaft (1) includes a weight disc (3) connected with the shaft end chuck (2), a aligning disc (4) connected with the chuck (2), and an aligning block (5) detachably connected with the aligning disc (4), the aligning block (5) has a plurality of aligning holes coaxial with the different shaft segments of the eccentric shaft (1), and the plurality of aligning blocks (5) are selectively mounted on the aligning disc (4).

2. The poly-axial eccentric weight structure of claim 1, wherein, Further comprising a plurality of weight plates (6), each of the weight plates (6) is detachably connected with the weight disc (3).

3. The poly-axial eccentric weight structure of claim 1, wherein, The aligning block (5) is detachably connected with the aligning disc (4) through a wedge.

4. The poly-axial eccentric weight structure of claim 3, wherein, The end of the aligning disc (4) away from the chuck (2) is provided with a positioning groove (41), and the aligning block (5) is fixed in the positioning groove (41) through a wedge block.

5. The poly-axial eccentric weight structure of claim 1, wherein, The outer diameter of the chuck (2) is greater than the outer diameter of the aligning disc (4), and the weight disc (3) is connected with the aligning disc (4) through a connecting block (7).

6. The poly-axial eccentric weight structure of claim 5, wherein, The aligning disc (4) further comprises a mounting groove (42) corresponding to the connecting block, and the two ends of the connecting block (7) are connected with the mounting groove (42) and the weight disc (3) through bolts.

7. The poly-axial eccentric weight structure of claim 1, wherein, The chuck (2) comprises a connecting hole facing the aligning disc (4), and the shaft shoulder of the aligning disc (4) is connected in the connecting hole.

8. The poly-axial eccentric weight structure of claim 4, wherein, The positioning groove (41) comprises a first area (411) corresponding to the aligning block (5), a second area (412) adjacent to and communicating with the first area (411), and a third area (413), a first wedge is arranged in the second area (412), a second wedge is arranged in the third area (413), and the first wedge, the second wedge and the first area (411) position the aligning block (5).

9. A multi-axial eccentric shaft counterweighting method based on the multi-axial eccentric shaft counterweighting structure according to any one of claims 1-7, characterized by, The method comprises the following steps: Step one, reserving a chuck (2) at both ends of the eccentric shaft (1), mounting a weight disc (3) on the circumferential end face of the chuck (2), and mounting an aligning disc (4) on the axial end face of the chuck (2) away from the eccentric shaft (1); Step two, mounting an aligning block (5) on the end face of the aligning disc (4) away from the chuck (2), each aligning block (5) comprising an aligning hole corresponding to the different shaft segments of the eccentric shaft (1).

10. The poly-axial eccentric weight method of claim 8, wherein, Further comprising step three, according to the theoretical thickness of the weight plate calculated by the three-dimensional software, matching the corresponding weight plate (6), and connecting the weight disc (3) with the aligning disc (4).

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