A shaft-type fine-tuning device

Abstract

This application provides a shaft fine-tuning device, relating to the field of mechanical technology. The shaft fine-tuning device includes a carrier, a detection component, and at least two adapters. The carrier has a detection hole; the detection component includes at least two dial indicators, which are disposed on the carrier and spaced apart along the periphery of the detection hole, wherein the axes of the detection heads of the at least two dial indicators are orthogonally arranged; at least two adapters are disposed on the carrier, and the carrier can pass through bearing holes near the bearing to be fine-tuned in a bearing array. The carrier and the corresponding bearing hole are coaxially arranged, such that the detection hole corresponds to the bearing to be fine-tuned in the bearing array. This application achieves rapid friction pressure adjustment and shaft loading / unloading, thereby improving the convenience, stability, and intelligence level of equipment operation; this application also achieves rapid positioning and adjustment of the gauge base, saving time and effort, and increasing work efficiency.

Description

Technical Field

[0001] This application relates to the field of mechanical technology, and in particular to a shaft fine-tuning device. Background Technology

[0002] In large equipment, multiple sets of parallel shaft systems (usually more than 100 shafts) need to be fixed by high-precision bearing housings. The distance between the bearing housings in each set is relatively large (ranging from 2 to 5 meters), while the bearing housings within each set are arranged densely at equal intervals. This type of structure has extremely high requirements for the parallelism, positional accuracy, and coaxiality of the bearing housings, and its assembly precision directly affects the operational stability of the equipment.

[0003] Currently, the assembly and adjustment method mainly relies on the combination of a laser tracker and a contact dial indicator: First, the bearing is installed in place, a process shaft is inserted into the bearing hole, and the laser tracker is used to collect spatial coordinate data; then, two dial indicators are fixed with magnetic bases, so that their probes press against the outer circle of the process shaft, serving as real-time indicators for fine-tuning the bearing seat position. During the adjustment process, the data from the laser tracker and the dial indicator readings must be repeatedly compared to gradually correct the bearing seat position until the accuracy requirements are met. However, this method has the following significant drawbacks: the dial indicator base needs to be repositioned and adjusted for each bearing seat adjustment, making the operation cumbersome and time-consuming. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a shaft fine-tuning device that enables rapid positioning and adjustment of the dial indicator, saving time and effort and increasing work efficiency.

[0005] This application provides the following technical solution:

[0006] This application provides a shaft fine-tuning device, the shaft fine-tuning device comprising:

[0007] The carrier has a detection hole;

[0008] The testing component includes at least two dial indicators, which are disposed on the carrier and spaced apart along the periphery of the testing hole, wherein the axes of the testing heads of the at least two dial indicators are orthogonally arranged.

[0009] At least two adapters are disposed on the carrier, the carriers being able to pass through bearing holes near the bearings to be fine-tuned in the bearing array, the carriers and the corresponding bearing holes being coaxially disposed such that the detection holes correspond to the bearings to be fine-tuned in the bearing array.

[0010] In some embodiments, the adapter includes:

[0011] An expansion portion, which is capable of radial expansion, is inserted into the bearing hole.

[0012] In some embodiments, the expansion portion includes:

[0013] An expansion tube has a first end and a second end. An opening groove is provided on the side wall of the second end. The opening groove extends along the axial direction of the expansion tube, and the diameter of the inner hole of the expansion tube at the second end gradually increases in the direction away from the first end.

[0014] An expansion joint has a first end and a second end. The expansion joint passes through the expansion tube, and the second end of the expansion joint is located at the second end of the expansion tube. The periphery of the second end of the expansion joint abuts against the inner wall of the second end of the expansion tube. The bearing member has a through-hole for positioning, and the first end of the expansion joint is a stud section that passes through the positioning hole.

[0015] An adjusting nut is threadedly connected to the protruding end of the stud section, and the adjusting nut abuts against the bearing member; wherein the rotation of the adjusting nut is configured to drive the tensioning rod to move radially, causing the second end of the expansion tube to expand radially.

[0016] In some embodiments, the second end of the tensioning rod and the inner conical surface of the second end of the expansion tube are engaged.

[0017] In some embodiments, the second end of the tensioning rod has an anti-rotation protrusion located within the opening groove, and the anti-rotation protrusion and the opening groove are slidably engaged.

[0018] In some embodiments, the first end of the expansion tube is connected to the carrier, and the expansion tube and the positioning hole are coaxially arranged.

[0019] In some embodiments, the detection element further includes:

[0020] The locking sleeve has a mounting hole located on the side wall of the detection hole. The locking sleeve is threadedly connected to the side wall of the detection hole, and the locking sleeve is coaxially connected to the guide tube of the dial indicator's detection head.

[0021] In some embodiments, the locking sleeve has a locking hole, the locking hole and the locking sleeve are coaxially arranged, one end of the locking sleeve is located at the fixed end, the other end of the locking sleeve is the clamping end, one end of the mounting hole is a threaded section, the other end of the mounting hole is a tapered section, and the inner diameter of the tapered section gradually decreases in the direction away from the threaded section.

[0022] The fixed end and the hole wall of the threaded section are threadedly connected. The side wall of the clamping end is provided with a side opening, which extends along the axial direction of the locking sleeve. The clamping end and the inner wall tapered surface of the tapered hole section are engaged.

[0023] In some embodiments, all the positioning holes and the detection holes are located on the same straight line and are spaced apart.

[0024] The embodiments of this application have the following advantages:

[0025] This application provides a shaft fine-tuning device, which achieves rapid and high-precision adjustment of the bearing housing through the following steps:

[0026] Insert the carrier component into the reference bearing hole near the bearing to be adjusted, ensuring that the carrier component and the reference bearing hole are coaxial. At this point, the inspection hole should be aligned with the process shaft of the bearing to be adjusted. Mount at least two dial indicators on the carrier component, with their inspection head axes orthogonally arranged (e.g., horizontal and vertical). Press these indicators against the outer diameter of the process shaft to monitor the offset of the process shaft in the orthogonal directions in real time. Based on the dial indicator readings, directly adjust the bearing housing position without repeatedly disassembling and reassembling the indicator mounts. The orthogonal dial indicator combination can reflect the direction and magnitude of the shaft center deviation in one step. Fine-tuning until the readings in each direction approach zero achieves the coaxiality requirement. After adjusting one bearing housing, simply move the carrier component to the next reference bearing hole to continue adjusting adjacent bearing housings, without needing to repeatedly position the dial indicators.

[0027] Therefore, the orthogonal dial indicator is fixed to the carrier, eliminating the need for repeated disassembly and reassembly of the magnetic base and calibration of the dial indicator in traditional methods, thus shortening adjustment time. The densely arranged bearing housings within the group can quickly switch reference holes via the carrier, enabling continuous adjustment, especially suitable for large-scale scenarios with over 100 shafts. The orthogonal dual indicators simultaneously detect radial deviations of the process shafts, avoiding directional errors caused by single-indicator measurements, resulting in higher coaxiality adjustment accuracy. The coaxial design of the carrier and the reference bearing hole eliminates secondary errors introduced by positioning deviations of the indicator base. The integrated structure reduces manual intervention, lowers reliance on operator experience, and reduces training costs. The laser tracker only requires initial calibration; subsequent operation relies on real-time feedback from the dial indicator, reducing the frequency of equipment switching.

[0028] In summary, this device integrates detection and adjustment functions through structural innovation, solving the pain points of low efficiency and large repeatability errors of traditional methods, and is especially suitable for high-precision assembly scenarios of large multi-axis equipment.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This illustration shows a schematic diagram of the structure of a shaft fine-tuning device provided in an embodiment of this application from one perspective.

[0032] Figure 2 This illustration shows a structural schematic diagram from another perspective of a shaft fine-tuning device provided in an embodiment of this application;

[0033] Figure 3 This illustration shows a structural schematic diagram from another perspective of an embodiment of the shaft fine-tuning device provided in this application;

[0034] Figure 4 This illustration shows a structural schematic diagram from one perspective of a carrier provided in an embodiment of this application;

[0035] Figure 5 A schematic diagram of the structure of an expansion tube provided by an embodiment of this application is shown from one perspective;

[0036] Figure 6 This illustration shows a structural schematic diagram from one perspective of an embodiment of the tensioning rod provided in this application;

[0037] Figure 7 The diagram shows a structural schematic of a locking sleeve provided by an embodiment of this application from one perspective.

[0038] Explanation of key component symbols:

[0039] 100-Bearing component; 110-Inspection hole; 120-Positioning hole; 130-Mounting hole; 200-Dial indicator; 300-Adapter; 310-Adjusting nut; 320-Tightening rod; 321-Anti-rotation protrusion; 330-Expansion tube; 331-Opening groove; 400-Locking sleeve; 410-Side opening. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] 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 in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] In related technologies, large equipment often has multiple sets of parallel shaft systems (typically exceeding 100 shafts) that need to be fixed using high-precision bearing housings. The distance between each set of bearing housings is relatively large (ranging from 2 to 5 meters), while the bearing housings within each set are arranged densely at equal intervals. This type of structure places extremely high demands on the parallelism, positional accuracy, and coaxiality of the bearing housings, and its assembly precision directly affects the operational stability of the equipment.

[0046] Currently, the assembly and adjustment method mainly relies on the combination of a laser tracker and a contact dial indicator 200: First, the bearing is installed in place, and the process shaft is inserted into the bearing hole. The laser tracker is used to collect spatial coordinate data. Then, two dial indicators 200 are fixed with magnetic bases, so that their probes press against the outer circle of the process shaft, serving as real-time indicators for fine-tuning the bearing seat position. During the adjustment process, the data from the laser tracker and the dial indicator 200 must be repeatedly compared to gradually correct the bearing seat position until the accuracy requirements are met. However, this method has the following significant drawbacks: the dial indicator bases need to be repositioned and adjusted for each bearing seat adjustment, which is cumbersome and time-consuming.

[0047] As shown in Figure 1 to Figure 7 As shown, to solve the above-mentioned technical problems, this application provides a shaft fine-tuning device. The shaft fine-tuning device includes a support member 100, a detection member, and at least two adapters 300. The support member 100 has a detection hole 110. The detection member includes at least two dial indicators 200, which are disposed on the support member 100 and spaced apart along the periphery of the detection hole 110, wherein the axes of the detection heads of the at least two dial indicators 200 are orthogonally arranged. At least two adapters 300 are disposed on the support member 100. The support member 100 can pass through the bearing hole near the bearing to be fine-tuned in the bearing array. The support member 100 and the corresponding bearing hole are coaxially arranged, so that the detection hole 110 corresponds to the bearing to be fine-tuned in the bearing array.

[0048] In these embodiments, the carrier 100 is the foundational component of the entire device, supporting other components. It has a detection hole 110 that mates with the process shaft or actual shaft of the bearing under test, serving as a measurement reference. The carrier 100 must ensure its stability and coaxiality within the bearing bore to guarantee the accuracy of the measurement data.

[0049] The testing components include at least two dial indicators 200, arranged at intervals along the circumference of the testing hole 110. The testing head axes of the dial indicators 200 are orthogonally arranged, one in the horizontal direction and one in the vertical direction, allowing simultaneous measurement of deviations in the X and Y directions. This arrangement enables multi-dimensional testing of bearing position, parallelism, and coaxiality without the need to repeatedly change the measurement direction.

[0050] The adapter 300 is used to secure or connect the carrier 100 to a suitable bearing hole. For example, in this application, there are two adapters 300. Of course, in other embodiments, the number of adapters 300 may be three, four, five, six, or seven, etc.

[0051] Of course, the carrier 100 can also be allowed to slide or move between multiple adjacent bearings to achieve continuous measurement and adjustment.

[0052] The shaft fine-tuning device of this application achieves rapid and high-precision adjustment of the bearing housing through the following steps:

[0053] The carrier 100 is inserted into the reference bearing hole near the bearing to be adjusted, ensuring that the carrier 100 is coaxial with the reference bearing hole. At this point, the inspection hole 110 is aligned with the process shaft of the bearing to be adjusted. At least two dial indicators 200 are mounted on the carrier 100, with their inspection head axes arranged orthogonally (e.g., horizontal and vertical). These indicators press against the outer circle of the process shaft, monitoring the offset of the process shaft in the orthogonal direction in real time. Based on the dial indicator 200 readings, the bearing seat position is directly adjusted without repeated disassembly and reassembly of the indicator mounts. The orthogonal dial indicator 200 combination can reflect the direction and magnitude of the shaft center deviation in one step. Fine-tuning brings the readings in each direction close to zero, thus achieving the coaxiality requirement. After adjusting one bearing seat, the carrier 100 only needs to be moved to the next reference bearing hole to continue adjusting adjacent bearing seats, without needing to repeatedly position the dial indicators 200.

[0054] Therefore, the orthogonal dial indicator 200 is fixed to the carrier 100, eliminating the need for repeated disassembly and reassembly of the magnetic base and calibration of the dial indicator 200 in traditional methods, thus shortening adjustment time. The densely arranged bearing seats within the group can be quickly switched via the carrier 100 to achieve continuous adjustment, making it particularly suitable for large-scale scenarios with over 100 shafts. The orthogonal dual indicators simultaneously detect radial deviations of the process shafts, avoiding directional errors caused by single-indicator measurements, resulting in higher coaxiality adjustment accuracy. The coaxial design of the carrier 100 and the reference bearing hole eliminates secondary errors introduced by positioning deviations of the indicator base. The integrated structure reduces manual intervention, lowers reliance on operator experience, and reduces training costs. The laser tracker only requires initial calibration; subsequent operation relies on real-time feedback from the dial indicator 200, reducing the frequency of equipment switching.

[0055] In summary, this device integrates detection and adjustment functions through structural innovation, solving the pain points of low efficiency and large repeatability errors of traditional methods, and is especially suitable for high-precision assembly scenarios of large multi-axis equipment.

[0056] In some embodiments, the adapter 300 includes an expansion portion that is capable of radial expansion and passes through a bearing bore.

[0057] In these embodiments, the expansion portion is a radially expandable mechanical structure, typically made of an elastic material or a segmented metal sleeve.

[0058] When the expansion section is inserted into the bearing bore, its outer diameter is increased by adjustment (such as tightening bolts or hydraulic drive), thereby tightly fitting or fixing it to the inner wall of the bearing bore. This expansion mechanism allows the carrier 100 to be stably positioned in the bearing bore to be measured, achieving high-precision measurement.

[0059] For example, a tapered mandrel can be used in conjunction with a multi-lobed retaining ring. Rotating the handle presses the mandrel down, causing the retaining ring to expand outward.

[0060] Alternatively, the flexible expansion tube can be expanded by filling it with gas or liquid, which is suitable for applications requiring greater contact force.

[0061] In some embodiments, the expansion portion includes:

[0062] An expansion tube has a first end and a second end. An opening groove 331 is provided on the side wall of the second end. The opening groove 331 extends along the axial direction of the expansion tube, and the diameter of the inner hole of the expansion tube at the second end gradually increases in the direction away from the first end.

[0063] An expansion rod 320 has a first end and a second end. The expansion rod 320 passes through the expansion tube, and the second end of the expansion rod 320 is located at the second end of the expansion tube. The periphery of the second end of the expansion rod 320 abuts against the inner wall of the second end of the expansion tube. The support member 100 has a through-hole 120, and the first end of the expansion rod 320 is a stud section that passes through the locating hole 120.

[0064] An adjusting nut 310 is threadedly connected to the protruding end of the stud section, and the adjusting nut 310 abuts against the bearing member 100; wherein, the rotation of the adjusting nut 310 is configured to drive the tensioning rod 320 to move radially, causing the second end of the expansion tube 330 to expand radially.

[0065] The first end of the expansion tube is connected to the support member 100. The second end of the expansion tube has an open groove 331 that extends axially, allowing this section to undergo radial expansion deformation under stress. The inner diameter of the second end of the expansion tube gradually increases from the first end to the second end (tapered hole). This tapered design is a key structure for achieving the expansion of the outer wall of the expansion tube.

[0066] The tensioning rod 320 passes inside the expansion tube, and its second end has a tapered outer surface that fits tightly with the tapered inner hole at the second end of the expansion tube. When the rod is pulled, the tapered outer wall presses against the inner wall of the expansion tube, causing the second end of the expansion tube to expand outward. The first end of the rod is a stud section for connecting to the adjusting nut 310.

[0067] The adjusting nut 310 is threadedly connected to the stud section of the tensioning rod 320. The nut abuts against the bearing member 100. When the adjusting nut 310 is rotated, it pushes or pulls the tensioning rod 320, thereby controlling the expansion state of the expansion tube.

[0068] Initial state (unexpanded): The tensioning rod 320 is located inside the expansion tube, but no axial pressure is applied. The second end of the expansion tube is in a naturally contracted state, facilitating insertion into the bearing bore.

[0069] Expansion process: Tighten the adjusting nut 310 to push the tensioning rod 320 to move towards the first end. The tapered section of the tensioning rod 320 is pressed into the tapered inner hole of the expansion tube, and the second end of the expansion tube is subjected to internal pressure, causing the opening groove 331 area to expand outward.

[0070] The outer wall fits or even slightly interferes with the inner wall of the bearing hole to achieve stable positioning of the device.

[0071] Release process: Loosen the adjusting nut 310, the tensioning rod 320 retracts, and the conical surface disengages from contact. The expansion tube returns to its original shape, releasing contact with the bearing hole, allowing the device to be easily pulled out and moved to the next measuring point.

[0072] In some embodiments, the second end of the tensioning rod 320 and the inner conical surface of the second end of the expansion tube are engaged.

[0073] In these embodiments, the second end of the tensioning rod 320 (i.e., the end inserted into the expansion tube) has an outer conical surface. The inner hole of the second end of the expansion tube has an inner conical surface structure, the taper of which matches the outer conical surface of the tensioning rod 320. The two form a tight fit between the conical surfaces, constituting a typical "conical tensioning pair". The conical fit between the rod and the expansion tube ensures uniform force and a stable expansion effect.

[0074] In some embodiments, the second end of the tensioning rod 320 has an anti-rotation protrusion 321, which is located in the opening groove 331, and the anti-rotation protrusion 321 and the opening groove 331 are slidably engaged.

[0075] In these embodiments, anti-rotation protrusions 321 are disposed on the outer periphery of the second end of the tensioning rod 320. The protrusions may be strip-shaped, block-shaped, or cylindrical, and extend axially; they are typically arranged symmetrically (e.g., 2 or 4) to ensure uniform force distribution.

[0076] The opening groove 331 is located on the second end sidewall of the expansion tube and extends axially, allowing the anti-rotation protrusion 321 to slide and move inside it, in the same direction as the expansion deformation of the expansion tube.

[0077] When the adjusting nut 310 is tightened: the tensioning rod 320 is pushed forward; the anti-rotation protrusion 321 slides axially in the opening groove 331, restricting the rotational freedom of the tensioning rod 320.

[0078] Without an anti-rotation structure, the tensioning rod 320 may rotate with the adjusting nut 310 due to friction between it and the tapered surface of the expansion tube, resulting in the inability to generate effective axial displacement.

[0079] After the anti-rotation protrusion 321 is inserted into the opening slot 331, the tensioning rod 320 can only move axially and cannot rotate around its own axis, thereby ensuring the accuracy and efficiency of the expansion action.

[0080] In some embodiments, the first end of the expansion tube 330 is connected to the carrier 100, and the expansion tube 330 and the positioning hole 120 are coaxially arranged.

[0081] In these embodiments, the first end of the expansion tube is the end of the expansion tube without the opening groove 331. It is relatively stable and is used to achieve a fixed or hinged connection with the carrier 100, serving a supporting and positioning function.

[0082] The positioning hole 120 on the bearing 100 is a through hole for inserting the tension rod 320; the hole position needs to be precisely machined to ensure that it is coaxial with the expansion tube, tension rod 320 and other components.

[0083] All key components (expansion tube, positioning hole 120, tensioning rod 320) are arranged around the same central axis; ensuring that the entire device can be precisely aligned after being inserted into the bearing hole and achieve uniform expansion.

[0084] The coaxial design ensures that when the expansion rod 320 is pushed, the radial force generated by the conical surface is evenly distributed along the circumference; this avoids local deformation or jamming caused by excessive force on one side of the expansion tube due to eccentricity.

[0085] The first end of the expansion tube is connected to the carrier 100 to form a fixed fulcrum; during the expansion process at the second end, the first end provides reverse support to prevent the device from shaking or tilting; it is particularly suitable for measurement scenarios with long strokes or large-diameter bearing holes.

[0086] If a detachable connection method (such as thread, flange, snap ring, etc.) is adopted, the expansion tube assembly can be quickly replaced between different specifications; it can meet the application requirements of bearing holes of multiple sizes and improve the versatility of the equipment.

[0087] The coaxial design ensures consistent orientation after each insertion into the bearing hole, reducing human error and improving the consistency and reliability of the dial indicator 200 measurement data.

[0088] In some embodiments, the detection element further includes a locking sleeve 400, the carrier 100 has a mounting hole 130 located on the side wall of the detection hole 110, the locking sleeve 400 is threaded to the side wall of the mounting hole 130, and the locking sleeve 400 is coaxially connected to the detection head guide tube of the dial indicator 200.

[0089] In these embodiments, the mounting hole 130 on the carrier 100 is provided on the side wall of the detection hole 110; it is usually a threaded hole for engaging with the locking sleeve 400; the axis of the mounting hole 130 should be perpendicular to or at a specific angle to the center line of the detection hole 110 to facilitate the side mounting of the dial indicator 200.

[0090] The locking sleeve 400 is generally a sleeve structure with external threads; it forms a threaded connection with the mounting hole 130; the locking sleeve 400 has a guide section or clamping section inside, which can form a tight fit with the dial indicator 200 measuring rod.

[0091] The dial indicator 200 probe guide tube is inserted into the locking sleeve 400 to achieve coaxial assembly; after the locking sleeve 400 is tightened, it is firmly clamped to prevent loosening or displacement.

[0092] Insert the guide tube of the dial indicator 200 test head into the mounting hole 130 of the carrier 100; screw in the locking sleeve 400 so that its inner wall contacts and clamps the outer wall of the dial indicator 200 measuring rod; thus achieving the dual function of axial limiting and radial fixing.

[0093] The inner wall of the locking sleeve 400 can be a conical surface, an elastic clip, or a multi-lobed structure; when the locking sleeve 400 is rotated, its inner wall contracts (or compresses) to firmly fix the dial indicator 200 measuring rod; ensuring that the dial indicator 200 does not deviate or vibrate during the measurement process.

[0094] In some embodiments, the locking sleeve 400 has a locking hole, the locking hole and the locking sleeve 400 are coaxially arranged, one end of the locking sleeve 400 is located at the fixed end, the other end of the locking sleeve 400 is the clamping end, one end of the mounting hole 130 is a threaded section, the other end of the mounting hole 130 is a tapered section, and the inner diameter of the tapered section gradually decreases in the direction away from the threaded section.

[0095] In these embodiments, the fixed end and the threaded section are threadedly connected to the hole wall, the side wall of the clamping end is provided with a side opening 410, the side opening 410 extends along the axial direction of the locking sleeve 400, and the clamping end and the inner wall tapered surface of the tapered hole section are engaged.

[0096] The fixed end of the locking sleeve 400 is threaded to the mounting hole 130 on the carrier 100. The side wall of the clamping end has an axially extending side opening 410, which has elastic deformation capability. A locking hole runs through the center and is coaxially assembled with the measuring rod of the dial indicator 200; the outer surface of the clamping end has a conical structure, which forms a conical-to-conical fit with the conical hole section on the carrier 100.

[0097] Mounting hole 130 is provided on carrier 100, perpendicular to or at a specific angle to detection hole 110. The threaded section is located near the outside and is used for threaded connection with the fixed end of locking sleeve 400. The tapered section is located near the inside, with its inner diameter gradually decreasing away from the threaded section, forming a tapered guide cavity.

[0098] Tightening process (clamping action): Insert the dial indicator 200 probe into the locking hole in the center of the locking sleeve 400. Screw the locking sleeve 400 into the mounting hole 130 of the carrier 100. As the locking sleeve 400 goes deeper, the conical surface of the clamping end gradually comes into contact with the conical surface of the conical hole section. The clamping end of the locking sleeve 400 is squeezed by the conical surface, causing radial contraction deformation. The contracted clamping end firmly clamps the dial indicator 200 probe. At the same time, the presence of the side opening 410 gives the clamping end good elastic clamping performance, preventing rigid breakage.

[0099] In some embodiments, all the positioning holes 120 and the detection holes 110 are located on the same straight line and are spaced apart.

[0100] In these embodiments, the detection hole 110 is located at the center or main axis of the support member 100 and is used to pass through the process shaft or calibration shaft as a measurement reference.

[0101] All measurement points are arranged along a straight line; the relative positions between the positioning hole 120 and the detection hole 110 are fixed, forming a linear measurement array system.

[0102] All dial indicators 200 are measured using the same process shaft or inspection shaft as the reference; this avoids the accumulation of errors caused by different measurement directions or inconsistent references; and improves the measurement accuracy of key parameters such as shaft parallelism, coaxiality, and position.

[0103] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0104] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0105] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A shaft fine-tuning device, characterized in that, The shaft fine-tuning device includes: The carrier has a detection hole; The testing component includes at least two dial indicators, which are disposed on the carrier and spaced apart along the periphery of the testing hole, wherein the axes of the testing heads of the at least two dial indicators are orthogonally arranged. At least two adapters are disposed on the carrier, the carriers being able to pass through bearing holes near the bearings to be fine-tuned in the bearing array, the carriers and the corresponding bearing holes being coaxially disposed such that the detection holes correspond to the bearings to be fine-tuned in the bearing array.

2. The shaft fine-tuning device according to claim 1, characterized in that, The adapter includes: An expansion portion, which is capable of radial expansion, is inserted into the bearing hole.

3. The shaft fine-tuning device according to claim 2, characterized in that, The expansion portion includes: An expansion tube has a first end and a second end. An opening groove is provided on the side wall of the second end. The opening groove extends along the axial direction of the expansion tube, and the diameter of the inner hole of the expansion tube at the second end gradually increases in the direction away from the first end. An expansion joint has a first end and a second end. The expansion joint passes through the expansion tube, and the second end of the expansion joint is located at the second end of the expansion tube. The periphery of the second end of the expansion joint abuts against the inner wall of the second end of the expansion tube. The bearing member has a through-hole for positioning, and the first end of the expansion joint is a stud section that passes through the positioning hole. An adjusting nut is threadedly connected to the protruding end of the stud section, and the adjusting nut abuts against the bearing member; wherein the rotation of the adjusting nut is configured to drive the tensioning rod to move radially, causing the second end of the expansion tube to expand radially.

4. The shaft fine-tuning device according to claim 3, characterized in that, The second end of the tensioning rod and the second end of the expansion tube are fitted with the inner conical surface.

5. The shaft fine-tuning device according to claim 3, characterized in that, The second end of the tensioning rod has an anti-rotation protrusion, which is located in the opening groove and is slidably engaged with the opening groove.

6. The shaft fine-tuning device according to claim 3, characterized in that, The first end of the expansion tube is connected to the carrier, and the expansion tube and the positioning hole are coaxially arranged.

7. The shaft fine-tuning device according to claim 1, characterized in that, The detection component also includes: The locking sleeve has a mounting hole located on the side wall of the detection hole. The locking sleeve is threadedly connected to the side wall of the detection hole, and the locking sleeve is coaxially connected to the guide tube of the dial indicator's detection head.

8. The shaft fine-tuning device according to claim 7, characterized in that, The locking sleeve has a locking hole, which is coaxially arranged with the locking sleeve. One end of the locking sleeve is located at the fixed end, and the other end of the locking sleeve is the clamping end. One end of the mounting hole is a threaded section, and the other end of the mounting hole is a tapered section. The inner diameter of the tapered section gradually decreases in the direction away from the threaded section. The fixed end and the hole wall of the threaded section are threadedly connected. The side wall of the clamping end is provided with a side opening, which extends along the axial direction of the locking sleeve. The clamping end and the inner wall tapered surface of the tapered hole section are engaged.

9. The shaft fine-tuning device according to claim 3, characterized in that, All the positioning holes and the detection holes are located on the same straight line and are spaced apart from each other.

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