Digital factory processing lathe maintenance equipment

Abstract

The application relates to the technical field of mechanical maintenance equipment, and discloses a digital factory machining lathe maintenance equipment which comprises a bearing table, a moving mechanism, a moving table, a second motor, a transmission mechanism, a rotating head, an internal thread cylinder, a testing mechanism, an upright plate, a third motor, a rotating disc, a three-jaw chuck, a shaft piece to be measured, a pressure detection assembly and a vibration monitoring mechanism; an acceleration sensor is fixedly connected to the rotating disc. The moving mechanism drives the moving table and the testing mechanism to automatically feed, the third motor drives the three-jaw chuck and the shaft piece to rotate, the testing mechanism can be replaced by an infrared distance measuring sensor, a first pressure sensor or a tool bit, and circular runout detection, contact pressure measurement and simulated cutting are respectively realized; the pressure detection assembly pushes the second pressure sensor on the arc-shaped block to adhere to the outer wall of the shaft piece through multiple electric cylinders, and multi-point radial pressure is collected. The application has the advantages of multiple detection functions, high automation degree, high detection precision and the capability of simulating various actual working conditions.

Description

Technical Field

[0001] This invention relates to the field of mechanical maintenance equipment technology, specifically to a maintenance equipment for a digital factory machining lathe. Background Technology

[0002] In the automated production process of a digital factory, the lathe, as a core machining equipment, directly affects product quality and production efficiency through its operational stability. Lathe components (such as spindles, drive shafts, and lead screws) operate under high speed and high load conditions for extended periods, making them prone to malfunctions such as journal wear, bending deformation, surface scratches, excessive circular runout, and assembly misalignment. Therefore, regular inspection and maintenance of lathe components is a crucial aspect of ensuring the health management of equipment in a digital factory.

[0003] Currently, the inspection of lathe shafts mainly relies on manual labor or separate testing instruments. Common inspection methods include: using a dial indicator to measure the radial runout of the shaft, using a vernier caliper to measure the shaft diameter, or disassembling the shaft and sending it to a coordinate measuring machine for precision inspection. However, in practical applications, existing technologies have limited testing capabilities. A single device cannot simultaneously perform comprehensive testing of multiple parameters such as circular runout, coaxiality, surface stress, and chuck vibration. Multiple instruments are often required, resulting in high equipment costs and a cumbersome and time-consuming inspection process. In addition, the inspection process relies on manual operation, such as manually rotating the shaft and reading the dial indicator value, which is not only inefficient, but also the measurement results are greatly affected by the operator's experience and reading errors, making it difficult to meet the requirements of digital factories for automated and standardized inspection data. In addition, existing maintenance equipment lacks the ability to evaluate the dynamic performance of shafts under simulated working conditions. For example, it cannot measure the multi-point radial pressure distribution of shafts under rotation online, nor can it simultaneously monitor the vibration acceleration of the three-jaw chuck itself. It is difficult to effectively diagnose potential faults such as chuck dynamic balance, bearing wear, or shaft eccentricity. Moreover, different models of shafts require different testing fixtures or probes. Traditional equipment has poor adaptability, the replacement process is complicated, and it is difficult to achieve rapid production changeover, which does not match the needs of flexible production in digital factories.

[0004] Therefore, how to design a digital factory machining lathe maintenance equipment with diverse detection functions, high automation, high detection accuracy, and the ability to simulate various actual working conditions has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a digital factory machining lathe maintenance equipment, which has the advantages of diverse detection functions, high degree of automation, high detection accuracy, and the ability to simulate various actual working conditions. It solves the problems of existing lathe shaft maintenance equipment having single functions, being unable to simultaneously detect multiple parameters such as coaxiality, circular runout, surface stress, and chuck vibration, as well as the problems of the detection process relying on manual labor and low efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A digital factory machining lathe maintenance device includes a support platform, a protective block fixed to the upper end of the support platform, a moving mechanism disposed on the upper end of the support platform, a moving table disposed at the moving end of the moving mechanism, a second motor fixed to one side of the moving table, a transmission mechanism disposed inside the moving table, a rotary head fixed to the output end of the transmission mechanism, an internal threaded cylinder fixed to the end of the rotary head away from the moving table, a testing mechanism disposed on the inner wall of the internal threaded cylinder, a vertical plate fixed to the upper end of the support platform, a third motor fixed to the end of the vertical plate away from the moving table, and a testing mechanism fixed to the first... A turntable with three motor output shafts passing through the vertical plate; a three-jaw chuck bolted to one end of the turntable near the moving platform; a shaft to be tested clamped at the three clamping ends of the three-jaw chuck; a pressure detection assembly set on the upper part of the support platform; and a vibration monitoring mechanism set on the upper part of the support platform; the central axis of the internal threaded cylinder and the central axis of the shaft are collinear; the output shaft of the second motor is fixed to the input end of the transmission mechanism; an acceleration sensor is fixed to the turntable, which is used to detect the vibration acceleration of the three-jaw chuck and the shaft during rotation.

[0007] Preferably, the moving mechanism includes a first motor and a bearing housing fixed to the upper end of the support platform, a lead screw fixed to the output shaft of the first motor, the lead screw being rotatably mounted on the inner wall of the bearing housing, and a threaded sleeve block being threadedly mounted on the outer peripheral wall of the lead screw, with the upper end of the threaded sleeve block fixed to the lower end of the moving platform.

[0008] It is worth noting that the transmission method of the lead screw and nut pair enables the smooth and precise linear feed of the moving stage, and has a self-locking characteristic, which can ensure the stability of the testing mechanism in the working position and avoid detection deviations caused by vibration.

[0009] Preferably, the protective block is provided with a guiding mechanism, which includes a guide rail fixed to the upper end of the protective block and a slider slidably disposed on the guide rail, with the upper end of the slider fixed to the lower end of the moving platform.

[0010] It is worth noting that the cooperation between the guide rail and the slider provides precise motion guidance for the moving table, ensuring that the coaxiality of the internal threaded cylinder and the shaft does not shift during movement. At the same time, it shares the weight of the moving table, reduces the lateral load on the lead screw, and extends the service life of the transmission system.

[0011] Preferably, the transmission mechanism includes a rotating column and a first synchronous pulley rotatably mounted on the inner wall of the moving platform, the output shaft of the second motor is fixedly connected to the second synchronous pulley, the outer peripheral walls of the first and second synchronous pulleys are jointly provided with a synchronous belt, and the rotating shaft of the rotating column is fixedly connected to the rotating shaft of the rotating head.

[0012] It is worth noting that the synchronous belt drive method has the advantages of smooth transmission and shock absorption, which can efficiently transmit the power of the second motor to the rotor, while avoiding the impact that may be caused by rigid direct connection, ensuring the stability of the test mechanism during rotation, and improving the accuracy of infrared ranging or pressure detection.

[0013] Preferably, the testing mechanism includes a first threaded post threaded onto the inner wall of the internally threaded cylinder, a U-shaped block fixed to the end of the first threaded post away from the internally threaded cylinder, a fixed post fixed to both sides of the U-shaped block, and an infrared ranging sensor fixed to the fixed post near the center of the U-shaped block.

[0014] It is worth noting that this testing mechanism is specifically designed for non-contact detection of shaft runout and coaxiality. The infrared distance sensor rotates with the internal threaded cylinder, enabling continuous acquisition of radial distance data on the outer surface of the shaft. This avoids wear and stress deformation caused by contact measurement, making it particularly suitable for high-speed dynamic testing of precision shafts.

[0015] Preferably, the testing mechanism includes a second threaded post threaded onto the inner wall of the internally threaded cylinder, a fixed plate fixed to the end of the second threaded post away from the internally threaded cylinder, and a first pressure sensor fixed to the end of the fixed plate away from the second threaded post.

[0016] It is worth noting that this testing mechanism is specifically designed for measuring the end face or radial contact pressure of shaft components. By using the first pressure sensor to contact the surface of the shaft component, it can simulate the stress conditions of the shaft component under assembly or cutting conditions, providing direct data support for evaluating the assembly stress, surface hardness, and machining allowance of the shaft component.

[0017] Preferably, the testing mechanism includes a third threaded post threaded to the inner wall of the internal threaded cylinder and a cutter head fixed to the end of the third threaded post away from the internal threaded cylinder.

[0018] It is worth noting that this testing facility is specifically designed to simulate cutting forces in turning or to perform micro-scale trial cuts. By conducting actual contact cutting between the tool tip and the surface of the shaft, the machinability, material hardness, and tool wear characteristics of the shaft can be evaluated, providing a basis for optimizing the tool parameters of lathes in digital factories.

[0019] Preferably, the pressure detection assembly includes a block placed on the upper part of the support platform, first brackets fixed to both sides of the block, and a fixing ring fixed to both first brackets. The outer peripheral wall of the fixing ring has multiple slots, and multiple pushing mechanisms are fixed to the outer peripheral wall of the fixing ring. The moving end of the pushing mechanism is fixed to a pressure detection mechanism, and the inner wall of the pressure detection mechanism is in contact with the outer peripheral wall of the shaft.

[0020] It is worth noting that the cooperation between the retaining ring and multiple pushing mechanisms enables multi-point, adjustable pressure detection on the outer peripheral wall of the shaft, and can simultaneously acquire the force distribution of the shaft in different radial directions, providing multi-dimensional data support for evaluating the roundness, surface uniformity, and stress state of the shaft after assembly.

[0021] Preferably, the pushing mechanism includes two fixed blocks fixed to the outer peripheral wall of the fixed ring, a fixed cylinder fixed to the two fixed blocks, a first electric cylinder fixed to the inner wall of the fixed cylinder, and a movable block fixed to the output shaft of the first electric cylinder; each movable block corresponds to a groove, the movable block passes through the groove and extends into the interior of the fixed ring; the pressure detection mechanism includes an arc-shaped block fixed to one end of the movable block near the center of the fixed ring, a second pressure sensor fixed to one end of the arc-shaped block near the center of the fixed ring, and a rubber block fixed to one end of the second pressure sensor near the center of the fixed ring; the inner wall of the rubber block is in contact with the outer peripheral wall of the shaft.

[0022] It is worth noting that, through the independent control of the first electric cylinder, each pressure detection mechanism can adjust the clamping force on the shaft individually. The rubber block, as a flexible contact medium, not only ensures the fit with the outer wall of the shaft, but also avoids surface scratches that may be caused by hard contact. The arc-shaped block design increases the force-bearing area, making the pressure measurement more uniform and stable.

[0023] Preferably, the vibration monitoring mechanism includes a horizontal block fixed to the lower part of the side wall of the vertical block, a second bracket fixed to the lower end of the horizontal block, a second electric cylinder fixed to the second bracket, a spring-loaded thin steel frame fixed to the upper end of the output shaft of the second electric cylinder, a plurality of vibration sensors fixed to the inner wall of the spring-loaded thin steel frame, and a rubber support block fixed to the upper end of the spring-loaded thin steel frame; the upper end of the rubber support block abuts against the outer peripheral wall of the three-jaw chuck.

[0024] It is worth noting that the spring-loaded thin steel frame has a certain degree of elasticity, which can maintain a stable contact pressure after the second electric cylinder lifts it, avoiding rigid impact. Multiple vibration sensors are arranged on the inner wall of the thin steel frame, which can simultaneously collect vibration signals at different positions of the chuck. Together with the acceleration sensor on the turntable, it forms a dual vibration monitoring system for the chuck-shaft system, which can effectively diagnose potential faults such as abnormal dynamic balance of the three-jaw chuck, bearing wear, or shaft eccentricity.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up a moving mechanism, a replaceable testing mechanism, and a three-jaw chuck driven by a third motor, can detect multiple parameters of shaft components, such as coaxiality, circular runout, surface contact pressure, or cutting force. This solves the problem of the single function of existing maintenance equipment, realizes multiple uses of one machine, and reduces equipment costs. 2. By setting up a pressure detection component, the present invention uses multiple electric cylinders to push the second pressure sensor and rubber block on the arc block to fit against the outer wall of the shaft from different directions. This allows for real-time measurement of the radial pressure on the shaft under static or extremely low speed conditions, thereby accurately evaluating the roundness, surface uniformity and assembly stress of the shaft, and improving the detection accuracy and automation level. 3. This invention, by setting up a vibration monitoring mechanism, uses a second electric cylinder to lift the spring-loaded thin steel frame and vibration sensor to abut against the outer peripheral wall of the three-jaw chuck. In conjunction with the acceleration sensor on the turntable, it can simultaneously monitor the vibration acceleration of the chuck itself and the low-frequency / high-frequency vibration characteristics of the chuck-shaft system under simulated working conditions. This effectively diagnoses potential faults such as dynamic balance of the chuck, bearing wear, or shaft eccentricity, and solves the problem that traditional maintenance cannot evaluate dynamic vibration performance online. 4. This invention achieves stable and precise feeding of the testing mechanism through the combination of screw drive, synchronous belt drive and guide rail; at the same time, the threaded connection between the internal threaded cylinder and various test columns makes the replacement of the test module quick and convenient, further improving the adaptability of the equipment to different shafts and different testing tasks. Attached Figure Description

[0026] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention; Figure 2 The diagram shown is a three-dimensional structural schematic of the pressure detection component of the present invention. Figure 3 The diagram shown is a three-dimensional structural schematic of the vibration monitoring mechanism of the present invention; Figure 4 The diagram shown is a three-dimensional structural schematic of the transmission mechanism of the present invention; Figure 5 The diagram shown is a three-dimensional structural schematic of the guiding mechanism of the present invention; Figure 6 The diagram shown is a three-dimensional structural schematic of the moving mechanism of the present invention; Figure 7 The diagram shown is a three-dimensional structural schematic of the first embodiment of the testing mechanism of the present invention; Figure 8 The diagram shown is a three-dimensional structural schematic of a second embodiment of the testing mechanism of the present invention; Figure 9 The diagram shown is a three-dimensional structural schematic of the third embodiment of the testing mechanism of the present invention.

[0027] Reference numerals: 1. Support platform; 2. Protective block; 201. Guide rail; 202. Slider; 3. Moving mechanism; 301. First motor; 302. Bearing seat; 303. Lead screw; 304. Threaded sleeve block; 4. Moving platform; 401. Rotating column; 402. First synchronous pulley; 403. Second synchronous pulley; 404. Synchronous belt; 5. Second motor; 6. Rotating head; 7. Internal threaded cylinder; 701. First threaded column; 702. U-shaped block; 703. Fixed column; 704. Infrared ranging sensor; 705. Second threaded column; 706. Fixed plate; 707. First Pressure sensor; 708, Third threaded post; 709, Cutting head; 8, Vertical plate; 9, Third motor; 10, Turntable; 11, Accelerometer; 12, Three-jaw chuck; 13, Shaft; 14, Vertical block; 15, First bracket; 16, Fixing ring; 17, Groove; 18, Fixing block; 19, Fixing cylinder; 20, First electric cylinder; 21, Movable block; 22, Arc-shaped block; 23, Second pressure sensor; 24, Rubber block; 25, Horizontal block; 26, Second bracket; 27, Second electric cylinder; 28, Spring-rebound thin steel frame; 29, Vibration sensor; 30, Rubber support block. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To address the shortcomings of existing lathe shaft inspection equipment, such as its limited functionality, inability to simultaneously measure multiple parameters including coaxiality, circular runout, surface stress, and chuck vibration, and its reliance on manual labor and low efficiency, the following technical solution is proposed. Please refer to [link / reference]. Figures 1 to 9 ; A digital factory machining lathe maintenance device includes a support platform 1, a protective block 2 fixed to the upper end of the support platform 1, a moving mechanism 3 set on the upper end of the support platform 1, a moving table 4 set at the moving end of the moving mechanism 3, a second motor 5 fixed to one side of the moving table 4, a transmission mechanism set inside the moving table 4, a rotary head 6 fixed to the output end of the transmission mechanism, an internal threaded cylinder 7 fixed to the end of the rotary head 6 away from the moving table 4, a testing mechanism set on the inner wall of the internal threaded cylinder 7, a vertical plate 8 fixed to the upper end of the support platform 1, a third motor 9 fixed to the end of the vertical plate 8 away from the moving table 4, and a transmission mechanism 9 fixed to the output end of the third motor 9. The turntable 10, which extends outward and passes through the vertical plate 8, has a three-jaw chuck 12 bolted to one end of the turntable 10 near the moving platform 4, a shaft to be tested 13 clamped at the three clamping ends of the three-jaw chuck 12, a pressure detection assembly set on the upper end of the support platform 1, and a vibration monitoring mechanism set on the upper end of the support platform 1; the central axis of the internal threaded cylinder 7 and the central axis of the shaft 13 are collinear; the output shaft of the second motor 5 is fixedly connected to the input end of the transmission mechanism; an acceleration sensor 11 is fixedly connected to the turntable 10, and the acceleration sensor 11 is used to detect the vibration acceleration of the three-jaw chuck 12 and the shaft 13 during rotation.

[0030] In this embodiment, specifically, the moving mechanism 3 includes a first motor 301 and a bearing seat 302 fixed to the upper end of the support platform 1, and a lead screw 303 fixed to the output shaft of the first motor 301. The lead screw 303 is rotatably mounted on the inner wall of the bearing seat 302, and a threaded sleeve 304 is threadedly installed on the outer peripheral wall of the lead screw 303. The upper end of the threaded sleeve 304 is fixed to the lower end of the moving platform 4. The first motor 301 drives the lead screw 303 to rotate, and through threaded transmission, drives the threaded sleeve 304 and the moving platform 4 to move linearly along the axial direction of the lead screw 303, thereby realizing the automatic feeding of the testing mechanism.

[0031] In this embodiment, specifically, a guiding mechanism is provided on the protective block 2. The guiding mechanism includes a guide rail 201 fixed to the upper end of the protective block 2 and a slider 202 slidably disposed on the guide rail 201. The upper end of the slider 202 is fixed to the lower end of the moving stage 4. The cooperation between the guide rail 201 and the slider 202 provides precise motion guidance for the moving stage 4, ensuring the coaxiality of the internal threaded cylinder 7 and the shaft 13, while reducing vibration during movement.

[0032] In this embodiment, specifically, the transmission mechanism includes a rotating column 401 and a first synchronous pulley 402 rotatably mounted on the inner wall of the moving platform 4. The output shaft of the second motor 5 is fixedly connected to the second synchronous pulley 403. The outer peripheral walls of the first synchronous pulley 402 and the second synchronous pulley 403 are jointly provided with a synchronous belt body 404. The rotating shaft of the rotating column 401 is fixedly connected to the rotating shaft of the rotating head 6. The second motor 5 drives the rotating column 401 and the rotating head 6 to rotate through the synchronous belt drive, thereby driving the internal threaded cylinder 7 and the testing mechanism to rotate, realizing the dynamic detection of the shaft 13.

[0033] In this embodiment, the testing mechanism is specifically a replaceable module, and includes at least three structures depending on the testing requirements: Example 1: As a specific implementation, the testing mechanism includes a first threaded post 701 threaded onto the inner wall of the internally threaded cylinder 7, a U-shaped block 702 fixed to the end of the first threaded post 701 away from the internally threaded cylinder 7, a fixed post 703 fixed through both sides of the U-shaped block 702, and an infrared ranging sensor 704 fixed to the end of the fixed post 703 near the center of the U-shaped block 702. When the internally threaded cylinder 7 rotates, the infrared ranging sensor 704 rotates with it, continuously measuring the change in distance between it and the outer surface of the shaft 13, thereby accurately calculating the circular runout and coaxiality of the shaft 13.

[0034] Example 2: As another specific implementation, the testing mechanism includes a second threaded post 705 threaded onto the inner wall of the internally threaded cylinder 7, a fixed plate 706 fixed to the end of the second threaded post 705 away from the internally threaded cylinder 7, and a first pressure sensor 707 fixed to the end of the fixed plate 706 away from the second threaded post 705. When the first pressure sensor 707 rotates with the internally threaded cylinder 7 and contacts the end face or outer circle of the shaft 13, it can measure the axial or radial contact pressure of the shaft 13 in the rotating state, which is used to simulate the force conditions during assembly or cutting.

[0035] Example 3: As another specific implementation, the testing mechanism includes a third threaded post 708 threaded onto the inner wall of the internal threaded cylinder 7 and a cutter head 709 fixed to the end of the third threaded post 708 away from the internal threaded cylinder 7. The cutter head 709 can be used to simulate cutting forces in turning, or to perform micro-test cutting on the shaft 13 under specific working conditions to evaluate the machining performance of the shaft 13.

[0036] In this embodiment, specifically, the pressure detection component includes a block 14 placed on the upper end of the support platform 1, first brackets 15 fixed to both sides of the block 14, and a fixing ring 16 fixed to both first brackets 15. The outer peripheral wall of the fixing ring 16 has multiple slots 17 through it. Multiple pushing mechanisms are fixed to the outer peripheral wall of the fixing ring 16. The moving end of the pushing mechanism is fixed to a pressure detection mechanism. The inner wall of the pressure detection mechanism is in contact with the outer peripheral wall of the shaft 13.

[0037] In this embodiment, specifically, the pushing mechanism includes two fixed blocks 18 fixed to the outer peripheral wall of the fixed ring 16, a fixed cylinder 19 fixed to the two fixed blocks 18, a first electric cylinder 20 fixed to the inner wall of the fixed cylinder 19, and a movable block 21 fixed to the output shaft of the first electric cylinder 20; each movable block 21 corresponds to a groove 17, and the movable block 21 passes through the groove 17 and extends into the interior of the fixed ring 16; the pressure detection mechanism includes an arc-shaped block 22 fixed to one end of the movable block 21 near the center of the fixed ring 16, a second pressure sensor 23 fixed to one end of the arc-shaped block 22 near the center of the fixed ring 16, and a rubber block 24 fixed to one end of the second pressure sensor 23 near the center of the fixed ring 16; the inner wall of the rubber block 24 is in contact with the outer peripheral wall of the shaft 13. During operation, multiple first electric cylinders 20 simultaneously or separately push the arc-shaped block 22, causing the rubber block 24 to adhere to the outer wall of the shaft 13 with a set pressure. The second pressure sensor 23 collects the radial pressure at each point in real time. The roundness, surface uniformity, and stress state of the shaft 13 after assembly can be evaluated through the multi-point pressure distribution.

[0038] In this embodiment, specifically, the vibration monitoring mechanism includes a horizontal block 25 fixed to the lower part of the side wall of the vertical block 14, a second bracket 26 fixed to the lower end of the horizontal block 25, a second electric cylinder 27 fixed to the second bracket 26, a spring-loaded thin steel frame 28 fixed to the upper end of the output shaft of the second electric cylinder 27, multiple vibration sensors 29 fixed to the inner wall of the spring-loaded thin steel frame 28, and a rubber support block 30 fixed to the upper end of the spring-loaded thin steel frame 28; the upper end of the rubber support block 30 abuts against the outer peripheral wall of the three-jaw chuck 12. The second electric cylinder 27 can drive the spring-loaded thin steel frame 28 to rise, so that the rubber support block 30 lightly touches the outer peripheral wall of the three-jaw chuck 12. The vibration sensors 29 collect the vibration signal when the chuck rotates, and at the same time, the acceleration sensor 11 on the turntable 10 synchronously collects the vibration acceleration. The data fusion of the two can diagnose faults such as dynamic balance of the three-jaw chuck 12, bearing wear, or eccentricity of the shaft 13.

[0039] Working principle: Before use, the operator fixes the three-jaw chuck 12 to be tested onto the turntable 10 with bolts, and clamps the shaft 13 between the three clamping ends of the three-jaw chuck 12, ensuring that the central axis of the shaft 13 is collinear with the central axis of the internal thread cylinder 7. Based on the testing requirements, select one of the three testing mechanisms and install it on the inner wall of the internally threaded cylinder 7: If it is necessary to detect the circular runout and coaxiality of shaft 13, select to install infrared range sensor 704; If it is necessary to detect the end face or radial contact pressure of shaft 13, select to install the first pressure sensor 707; If you need to simulate cutting forces or perform a test cut, select to install tool head 709; After the equipment is started, the third motor 9 drives the turntable 10 to rotate, which in turn drives the three-jaw chuck 12 and the shaft 13 to rotate at a set speed. At this time, the acceleration sensor 11 collects the vibration acceleration of the three-jaw chuck 12 and the shaft 13 in real time during the rotation process to monitor the dynamic balance status. The first motor 301 of the moving mechanism 3 starts, driving the lead screw 303 to rotate, which in turn drives the moving table 4 to move smoothly along the guide rail 201 through the threaded sleeve block 304, so that the testing mechanism is fed towards the shaft 13; at the same time, the second motor 5 drives the internal threaded cylinder 7 and the testing mechanism to rotate through the synchronous belt drive. During the feeding process: the infrared ranging sensor 704 continuously measures the distance between itself and the outer surface of the shaft 13, and calculates the radial runout and coaxiality deviation of the shaft 13 through the data acquisition system; Alternatively, the first pressure sensor 707 contacts the end face or outer circle of the shaft 13 and records the contact pressure value, which is used to evaluate the assembly stress or surface hardness of the shaft 13. Alternatively, the cutting head 709 can be used to perform a small amount of trial cutting on the surface of the shaft 13, and the machining performance of the shaft 13 can be evaluated by monitoring the changes in cutting force. Meanwhile, when the shaft 13 stops rotating or maintains a very low speed, the multiple first electric cylinders 20 in the pressure detection assembly push the arc block 22 respectively, so that the rubber block 24 adheres to the outer peripheral wall of the shaft 13 with a preset pressure. The second pressure sensor 23 collects radial pressure values ​​at multiple points to form a pressure distribution map, which is used to accurately evaluate the roundness and surface uniformity of the shaft 13. The second electric cylinder 27 in the vibration monitoring mechanism pushes the spring-loaded thin steel frame 28 upward, causing the rubber support block 30 to lightly touch the outer peripheral wall of the three-jaw chuck 12. The vibration sensor 29 collects the vibration signal of the chuck when it rotates. The spring-loaded thin steel frame 28 has a certain elasticity, which can ensure stable contact without damaging the surface of the chuck. The data from the vibration sensor 29 and the data from the acceleration sensor 11 are transmitted to the controller. By comparing and analyzing the data, faults such as abnormal dynamic balance of the chuck, bearing wear, or shaft eccentricity can be diagnosed. After the test is completed, each mechanism is reset: the moving mechanism 3 drives the test mechanism to exit, the electric cylinder of the pressure detection component retracts to disengage the rubber block 24 from the shaft 13, the second electric cylinder 27 of the vibration monitoring mechanism descends to disengage the rubber support block 30 from the chuck, the third motor 9 stops rotating, the operator releases the three-jaw chuck 12 to remove the shaft 13, and the entire test process is completed. The staff can perform fault diagnosis on the lathe shaft or chuck based on the data obtained from each sensor.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A digital factory machining lathe overhaul equipment, characterized in that, Includes a support platform (1), a protective block (2) fixed to the upper end of the support platform (1), a moving mechanism (3) set on the upper end of the support platform (1), a moving platform (4) set on the moving end of the moving mechanism (3), a second motor (5) fixed to one side of the moving platform (4), a transmission mechanism set inside the moving platform (4), a rotor (6) fixed to the output end of the transmission mechanism, an internal threaded cylinder (7) fixed to the end of the rotor (6) away from the moving platform (4), a testing mechanism set on the inner wall of the internal threaded cylinder (7), a vertical plate (8) fixed to the upper end of the support platform (1), and a test mechanism set on the end of the vertical plate (8) away from the moving platform (4). The third motor (9) at one end of the moving platform (4), the turntable (10) fixed to the output shaft of the third motor (9) and passing through the vertical plate (8), the three-jaw chuck (12) bolted to the turntable (10) near the end of the moving platform (4), the shaft to be tested (13) clamped at the three clamping ends of the three-jaw chuck (12), the pressure detection assembly set on the upper end of the bearing platform (1), and the vibration monitoring mechanism set on the upper end of the bearing platform (1); the central axis of the internal threaded cylinder (7) and the central axis of the shaft (13) are collinear; the output shaft of the second motor (5) is fixed to the input end of the transmission mechanism; An acceleration sensor (11) is fixedly connected to the turntable (10). The acceleration sensor (11) is used to detect the vibration acceleration of the three-jaw chuck (12) and the shaft (13) during rotation.

2. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The moving mechanism (3) includes a first motor (301) and a bearing seat (302) fixed to the upper end of the support platform (1), and a lead screw (303) fixed to the output shaft of the first motor (301). The lead screw (303) is rotatably mounted on the inner wall of the bearing seat (302). A threaded sleeve (304) is threadedly installed on the outer peripheral wall of the lead screw (303). The upper end of the threaded sleeve (304) is fixed to the lower end of the moving platform (4).

3. The digital factory machining lathe maintenance equipment according to claim 2, characterized in that, The protective block (2) is provided with a guide mechanism, which includes a guide rail (201) fixed to the upper end of the protective block (2) and a slider (202) slidably disposed on the guide rail (201). The upper end of the slider (202) is fixed to the lower end of the moving platform (4).

4. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The transmission mechanism includes a rotating column (401) and a first synchronous pulley (402) rotatably mounted on the inner wall of the moving platform (4). The output shaft of the second motor (5) is fixedly connected to the second synchronous pulley (403). The outer peripheral walls of the first synchronous pulley (402) and the second synchronous pulley (403) are jointly provided with a synchronous belt (404). The rotating shaft of the rotating column (401) is fixedly connected to the rotating shaft of the rotating head (6).

5. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The testing mechanism includes a first threaded post (701) threaded onto the inner wall of the inner threaded cylinder (7), a U-shaped block (702) fixed to the end of the first threaded post (701) away from the inner threaded cylinder (7), a fixed post (703) fixed through both sides of the U-shaped block (702), and an infrared ranging sensor (704) fixed to the end of the fixed post (703) near the center of the U-shaped block (702).

6. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The testing mechanism includes a second threaded post (705) threaded onto the inner wall of the inner threaded cylinder (7), a fixed plate (706) fixed to one end of the second threaded post (705) away from the inner threaded cylinder (7), and a first pressure sensor (707) fixed to one end of the fixed plate (706) away from the second threaded post (705).

7. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The testing mechanism includes a third threaded post (708) threaded onto the inner wall of the inner threaded cylinder (7) and a cutter head (709) fixed to the end of the third threaded post (708) away from the inner threaded cylinder (7).

8. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The pressure detection assembly includes a block (14) placed on the upper end of the support platform (1), a first bracket (15) fixed to both sides of the block (14), and a fixing ring (16) fixed to both first brackets (15). The outer peripheral wall of the fixing ring (16) is provided with multiple slots (17). Multiple pushing mechanisms are fixed to the outer peripheral wall of the fixing ring (16). The moving end of the pushing mechanism is fixed to a pressure detection mechanism. The inner wall of the pressure detection mechanism is in contact with the outer peripheral wall of the shaft (13).

9. The digital factory machining lathe maintenance equipment according to claim 8, characterized in that, The driving mechanism includes two fixed blocks (18) fixed to the outer peripheral wall of the fixed ring (16), a fixed cylinder (19) fixed to the two fixed blocks (18), a first electric cylinder (20) fixed to the inner wall of the fixed cylinder (19), and a movable block (21) fixed to the output shaft of the first electric cylinder (20); each movable block (21) corresponds to a groove (17), and the movable block (21) passes through the groove (17) and extends into the interior of the fixed ring (16); The pressure detection mechanism includes an arc-shaped block (22) fixed to one end of the movable block (21) near the center of the fixed ring (16), a second pressure sensor (23) fixed to one end of the arc-shaped block (22) near the center of the fixed ring (16), and a rubber block (24) fixed to one end of the second pressure sensor (23) near the center of the fixed ring (16); the inner wall of the rubber block (24) is in contact with the outer peripheral wall of the shaft (13).

10. The digital factory machining lathe maintenance equipment according to claim 1, characterized in that, The vibration monitoring mechanism includes a horizontal block (25) fixed to the lower part of the side wall of the vertical block (14), a second bracket (26) fixed to the lower end of the horizontal block (25), a second electric cylinder (27) fixed to the second bracket (26), a spring-loaded thin steel frame (28) fixed to the upper end of the output shaft of the second electric cylinder (27), multiple vibration sensors (29) fixed to the inner wall of the spring-loaded thin steel frame (28), and a rubber support block (30) fixed to the upper end of the spring-loaded thin steel frame (28); the upper end of the rubber support block (30) abuts against the outer peripheral wall of the three-jaw chuck (12).

Images