Shaft part dynamic balance detection production line and control method

Abstract

The application discloses an axle part dynamic balance detection production line and a control method, and relates to the technical field of axle part machining. The axle part dynamic balance detection production line comprises a conveying line and a detection mechanism. The conveying line is provided with two symmetrically distributed baffles. Any baffle is provided with a plurality of clamping grooves. Any two oppositely arranged clamping grooves jointly form a placing position of the axle part. One end of the bottom of the conveying line is provided with a lifting conveying assembly and a translation mechanism. The lifting conveying assembly comprises a supporting plate and a lifting motor. The output end of the lifting motor is connected with the supporting plate. The output end of the translation mechanism is drivingly connected with the lifting motor. When the lifting motor drives the supporting plate to move upward, the translation mechanism synchronously drives the lifting motor to move forward along the conveying direction, so that the supporting plate drives the axle part to move forward by a distance corresponding to the groove position of one clamping groove. The step-by-step conveying line is arranged in cooperation with the detection mechanism in the middle of the conveying line, so that the automatic conveying and dynamic balance detection operation of the axle part are realized, the labor cost is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of shaft parts processing technology, specifically to a dynamic balancing testing production line and control method for shaft parts. Background Technology

[0002] In the production of automotive parts, various types of shaft parts are processed and prepared. Since shaft parts are mainly used in the direction of power transmission, dynamic balancing tests are required to ensure that the shaft parts can meet the requirements of power transmission.

[0003] Current methods for dynamic balancing testing of shaft parts mainly rely on operators manually clamping the shaft parts into the testing equipment, completing positioning, clamping, and fixing operations, and then measuring the dynamic balance data of the shaft parts during rotation. This testing method depends on operators loading and unloading the testing equipment, resulting in high labor costs and low testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a dynamic balancing inspection production line and control method for shaft parts. By setting up a stepping conveyor line in conjunction with a detection mechanism in the middle of the conveyor line, the automated conveying and dynamic balancing inspection of several shaft parts can be achieved, reducing labor costs and improving the efficiency of dynamic balancing inspection of shaft parts.

[0005] This invention provides a dynamic balancing testing production line for shaft parts. The testing production line includes: a conveyor line and a testing mechanism located in the middle of the conveyor line. The conveyor line is provided with two symmetrically distributed baffles. Each baffle is provided with a plurality of slots spaced apart along the conveying direction. Any two oppositely arranged slots together form the placement position of the shaft parts.

[0006] The bottom end of the conveyor line is provided with a lifting conveyor assembly and a translation mechanism. The lifting conveyor assembly includes a pallet and a lifting motor. The output end of the lifting motor is driven to the pallet. The pallet is located below several placement positions. The lifting motor drives the pallet to move upward and downward, so as to drive several shaft parts to be lifted upward and disengaged from the slot simultaneously.

[0007] The output end of the translation mechanism is connected to the lifting motor. When the lifting motor drives the pallet to move upward, the translation mechanism synchronously drives the lifting motor to move forward along the conveying direction, so that the pallet drives the shaft parts to move forward by the distance of the slot corresponding to the slot.

[0008] Furthermore, the detection mechanism includes a detection station located in the middle of the conveyor line, clamping components located on both sides of the clamping station, and a detection probe located above the detection station.

[0009] The clamping component includes a clamping cylinder and a clamping block. The cylinder body of the clamping cylinder is fixed to the side of the conveying body, and the clamping block is fixed to the end of the piston rod of the clamping cylinder. The clamping cylinder drives the clamping block to move closer to or away from the shaft-like parts.

[0010] Furthermore, the detection mechanism also includes a rotary drive motor, the output shaft of which is driven to the clamping block of the clamping component via a coupling, so as to drive the clamping block and shaft parts to rotate synchronously.

[0011] Furthermore, the inspection station is equipped with a support plate for receiving shaft-type parts, and the support horizontal plane of the support plate is lower than the clamping horizontal position of the clamping component.

[0012] Furthermore, the top surface of the pallet is provided with a plurality of positioning grooves at intervals along the conveying direction, and the position of each positioning groove corresponds one-to-one with the placement position;

[0013] The groove shape of the positioning groove is adapted to the outer circle of the shaft part, and the positioning groove is used to limit the position of the shaft part during the lifting and translation of the pallet.

[0014] Furthermore, the translation mechanism is a linear module, and the guide rail of the linear module is arranged along the conveying direction of the conveyor line;

[0015] The lifting motor is fixed on the slider of the linear module, and the moving distance of the slider within the linear module is set as the distance between two adjacent placement positions.

[0016] Furthermore, the detection probe is a laser displacement sensor, and a lifting cylinder is provided on the top of the detection probe. The piston rod of the lifting cylinder is fixedly connected to the detection probe, and the lifting cylinder can drive the detection probe to rise and fall vertically to a preset detection position.

[0017] Furthermore, the bottom of the conveyor line is provided with several support legs, which are used to support and connect the pallet.

[0018] Furthermore, protective railings are provided on both sides of the conveyor line along the conveying direction, and an emergency stop button is provided on the side of the testing station. The emergency stop button is electrically connected to the control circuit of the dynamic balancing testing production line.

[0019] The present invention also provides a control method for a dynamic balancing testing production line for shaft parts, characterized in that the control method is applicable to the aforementioned dynamic balancing testing production line for shaft parts;

[0020] The control method includes:

[0021] S1: Obtain the testing work data from the testing institution, and generate a transmission instruction based on the testing work data;

[0022] S2: Based on the transmission command, the conveyor line is controlled to move several shaft-type parts forward synchronously by one placement position using step conveying;

[0023] S3: Identify whether there are shaft-type parts at the inspection station of the inspection mechanism. If yes, drive the inspection mechanism to perform the inspection work. If no, return to step S2.

[0024] S4: Repeat steps S1 to S3 to achieve step-by-step conveying and continuous inspection of shaft parts.

[0025] This invention provides a production line and control method for dynamic balancing testing of shaft parts. By setting up a stepping conveyor line in conjunction with a testing mechanism in the middle of the conveyor line, the automated conveying and dynamic balancing testing of several shaft parts can be achieved, reducing labor costs and improving the efficiency of dynamic balancing testing of shaft parts. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the dynamic balancing testing production line for shaft parts in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the testing status of the dynamic balancing testing production line for shaft parts in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the step-feeding state of the dynamic balancing test production line for shaft parts in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the lifting and conveying assembly of the dynamic balancing testing production line for shaft parts in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the detection mechanism of the dynamic balancing detection production line for shaft parts in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the control method for the dynamic balancing test production line of shaft parts in an embodiment of the present invention.

[0032] In the diagram: 1. Conveyor line; 11. Baffle; 111. Slot; 12. Support leg; 2. Lifting and conveying assembly; 21. Lifting motor; 22. Pallet; 3. Translation mechanism; 4. Detection mechanism; 41. Clamping cylinder; 42. Clamping block; 43. Support plate; 44. Detection probe; 45. Position sensor; 46. Movement adjustment assembly. Detailed Implementation

[0033] 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.

[0034] Example 1:

[0035] Please refer to Figures 1 to 5 This invention provides a dynamic balancing testing production line for shaft parts. The testing production line includes: a conveyor line 1 and a testing mechanism 4 located in the middle of the conveyor line 1. The conveyor line 1 is provided with two symmetrically distributed baffles 11. Each baffle 11 has a plurality of slots 111 spaced apart along the conveying direction. Any two oppositely arranged slots 111 together form a placement position for the shaft parts. The placement position is used to clamp and support the shaft parts, so that a plurality of shaft parts can be clamped and arranged according to a plurality of slots 111, so as to realize the orderly conveying and testing of a plurality of shaft parts.

[0036] Furthermore, the slot 111 is a groove structure on the inner side of the baffle 11. The slot 111 can be implemented by a V-shaped groove or a U-shaped groove. The corresponding slots 111 on the two baffles 11 form a radial constraint on the shaft part, so that the part maintains a fixed axial position during the conveying process. That is, the shaft part is positioned during the conveying process of the conveyor line 1, so that the detection mechanism 4 can quickly clamp and dynamically balance the shaft part.

[0037] Specifically, a lifting conveying assembly 2 and a translation mechanism 3 are provided at one end of the bottom of the conveyor line 1. The lifting conveying assembly 2 includes a pallet 22 and a lifting motor 21. The output end of the lifting motor 21 is connected to the pallet 22, so that when the output axis of the lifting motor 21 extends upward, it can drive the pallet 22 to move upward. The pallet 22 is located below several placement positions. The lifting motor 21 drives the pallet 22 to move upward and downward, so as to drive several shaft parts to be lifted upward synchronously and disengage from the slot 111. The lifting motor 21 is used to adjust the fit between the shaft parts and the slot 111, so that the shaft parts can disengage from the slot 111 so that the shaft parts can be moved and adjusted.

[0038] Furthermore, the slot 111 is located in the middle of the baffle 11, so that when the shaft part is lifted by the lifting motor 21 and the pallet 22, the shaft part extends between the two baffles 11, and the baffle 11 can limit the shaft part to prevent it from falling off during the lifting and transportation process.

[0039] Specifically, the bottom of the conveyor line 1 is provided with several support legs 12, which are used to support and connect the pallet 22. The support legs 12 are arranged at the key load-bearing points of the bottom frame of the conveyor line 1. For long-distance conveyor lines 1, the support legs 12 can ensure the stability of the pallet 22 in the idle state and avoid bending and deformation of the pallet 22 during long-term use.

[0040] Specifically, the output end of the translation mechanism 3 is connected to the lifting motor 21. When the lifting motor 21 drives the pallet 22 to move upward, the translation mechanism 3 synchronously drives the lifting motor 21 to move forward along the conveying direction, causing the pallet 22 to move the shaft parts forward by the distance corresponding to the slot 111. The lifting conveying assembly 2 and the translation mechanism 3 cooperate to realize the translational conveying of shaft parts on the conveyor line 1, so that several shaft parts can be moved forward by the position of one slot 111, thereby realizing the sequential feeding operation of individual shaft parts of the detection mechanism 4.

[0041] Furthermore, when the lifting motor 21 drives the pallet 22 to move upward, the translation mechanism 3 drives the lifting motor 21 to move forward along the conveying direction, causing the pallet 22 to move the shaft parts forward by the distance corresponding to the slot 111. When the lifting motor 21 drives the pallet 22 to descend downward, several shaft parts can be engaged in the slot 111, and the pallet 22 disengages from the shaft parts. The translation mechanism 3 can then synchronously drive the lifting motor 21 to move backward and reset in the opposite conveying direction, thereby realizing that the shaft parts are translated by one slot along the conveying direction.

[0042] Furthermore, the drive control of the translation mechanism 3 can be precisely adjusted using PLC programming control. The translation is completed when the pallet 22 lifts the part out of the slot 111 and is suspended. After completing the translation of one slot 111 distance, the movement is limited, thereby realizing the limited conveying of shaft parts.

[0043] Specifically, the conveyor line 1 of the dynamic balancing testing production line for shaft parts proposed in this embodiment of the invention uses a multi-slot 111 limiter combined with a lifting conveyor assembly 2 to achieve orderly conveying of several shaft parts. When the pallet 22 is lifted to release the part from the constraint of the slot 111, the translation mechanism 3 immediately drives the part to move forward one station spacing. The pallet 22 achieves synchronous lifting of several shaft parts and synchronous forward movement of several shaft parts. Within a single lifting stroke, the lifting, translation, and lowering actions are completed synchronously, forming a step-by-step conveying to meet the testing operation requirements of the testing mechanism 4. The traditional step-by-step operation is integrated into a compound action, which can shorten the time required to convey a single shaft part to the testing mechanism 4, while avoiding positioning errors caused by manual intervention. It realizes the automated conveying of the dynamic balancing testing process of shaft parts. The mechanized conveying replaces manual handling, reduces the labor intensity of operators, and ensures the stability and controllability of the conveying process.

[0044] Specifically, the testing mechanism 4 includes a testing station located in the middle of the conveyor line 1, clamping components located on both sides of the clamping station, and a testing probe 44 located above the testing station. The clamping components include a clamping cylinder 41 and a clamping block 42. The cylinder body of the clamping cylinder 41 is fixed to the side of the conveyor body, and the clamping block 42 is fixed to the end of the piston rod of the clamping cylinder 41. The clamping cylinder 41 drives the clamping block 42 to move closer to or away from the shaft-like parts. The clamping components are used to clamp and position the shaft-like parts located at the testing station so as to perform dynamic balancing testing on the shaft-like workpieces.

[0045] Specifically, when the shaft part is transported to the inspection station, the clamping cylinders 41 on both sides are activated simultaneously, pushing the clamping block 42 to move towards the center of the part in a straight line, so that the clamping block 42 contacts the end face of the shaft part. The clamping blocks 42 on both sides realize the automatic centering and positioning of the shaft part, and can clamp the shaft part at the same time.

[0046] After the clamping block 42 contacts the part, the clamping cylinder 41 maintains pressure to stabilize the part in the center of the inspection station. The inspection probe 44 is activated after clamping, acquiring the dynamic balance data of the part through a non-contact measurement method. The linear drive of the clamping cylinder 41 ensures precise and controllable movement of the clamping block 42, preventing part displacement due to angular deviations. The central position of the inspection station ensures that after the part is initially positioned on conveyor line 1, only minor adjustments are needed to meet the inspection requirements. The spatial arrangement of the clamping block 42 and the inspection probe 44 ensures that the clamping and inspection actions do not interfere with each other.

[0047] Furthermore, the clamping cylinder 41 can be a double-acting cylinder, with its cylinder body fixed to the side wall of the conveying body by bolts. The clamping block 42 can be made of hard alloy material, with one end connected to the cylinder piston rod by a thread, and the other end provided with an arc-shaped groove that matches the outer circle of the shaft part.

[0048] In use, the shaft-like part is conveyed to the inspection station. The clamping cylinder 41 drives the clamping block 42 closer to the shaft-like part until the arc-shaped groove of the clamping block 42 contacts the outer circumference of the shaft-like part, thus fixing the part. The inspection probe 44 then performs a dynamic balance test on the fixed shaft-like part. After the test is completed, the clamping cylinder 41 drives the clamping block 42 away from the shaft-like part, releasing the part.

[0049] The detection mechanism 4 enables precise positioning and stable clamping of shaft parts during the detection process. The design of the clamping components ensures the accuracy of the part's position at the detection station, avoiding detection errors caused by positional deviations. The cylinder-driven clamping mechanism replaces manual operation, improving clamping efficiency and achieving automated clamping and positioning.

[0050] Specifically, the inspection station is equipped with several position sensors 45. The detection direction of the position sensors 45 is towards the inspection station, so that when a shaft-type part enters the inspection station, the position sensors 45 can detect the position of the shaft-type part located at the inspection station. That is, the position sensors 45 are used to detect whether a shaft-type part is present at the inspection station. The position sensors 45 can be infrared sensors, which emit infrared light towards the shaft-type part at the inspection station. Based on the detection data of the position sensors 45, the presence of a shaft-type part at the inspection station can be identified, so as to regulate the working state of the shaft-type part dynamic balancing inspection production line.

[0051] Specifically, the detection probe 44 is positioned above the detection station and adopts a non-contact detection method. When the clamped shaft part is rotated, the detection probe 44 approaches the shaft part, which can ensure the detection accuracy of the shaft part, improve the accuracy of dynamic balance detection, and significantly improve the detection efficiency, providing reliable technical support for the batch detection of shaft parts.

[0052] Specifically, the detection mechanism 4 further includes a moving adjustment component 46, which drives the detection probe 44 to adjust its position. After the detection mechanism 4 completes the detection of the current shaft part, the moving adjustment component 46 drives the detection probe 44 to move upward, so that the detection probe 44 can move away from the shaft part in the vertical direction. The moving adjustment component 46 can continue to drive the detection probe 44 to move to one side of the conveyor line 1, so that the detection probe 44 avoids the shaft part in the horizontal direction. That is, the detection probe 44 and the conveyor line 1 can form a spatially staggered arrangement. When the lifting conveyor component 2 and the translation mechanism 3 drive several shaft parts of the conveyor line 1 to lift and move forward, the detection probe 44 and several shaft parts of the conveyor line 1 can remain separated from each other, thereby avoiding motion interference.

[0053] Furthermore, the movable adjustment component 46 can be configured as a ball screw transmission mechanism, powered by a servo motor for precise displacement, speed, and torque control. It works in conjunction with a coupling or synchronous belt for transmission. A command pulse is issued by the CNC system, causing the servo motor to rotate precisely by a certain angle according to the command. The rotation of the servo motor, in conjunction with the coupling, directly drives the ball screw to rotate. Through the circulation of the balls, this is converted into precise linear motion of the nut along the screw axis, thereby achieving precise movement adjustment of the detection probe 44. The movable adjustment component 46 can realize multi-axis degree-of-freedom motion adjustment of the detection probe 44, enabling the detection probe 44 to meet the detection requirements of the shaft-type parts.

[0054] Furthermore, by setting the movable adjustment component 46 to adjust the spatial position of the detection probe 44, motion interference between the detection probe 44 and the shaft parts of the conveyor line 1 is avoided. The compact structural arrangement between the detection probe 44 and the shaft parts of the conveyor line 1 reduces the movement path of the detection probe 44, so that the detection probe 44 can accurately detect the shaft parts.

[0055] Specifically, the detection mechanism 4 also includes a rotary drive motor. The output shaft of the rotary drive motor is driven to the clamping block 42 of the clamping component through a coupling, so as to drive the clamping block 42 and the shaft parts to rotate synchronously. That is, the rotary drive motor is used to perform the rotary drive of the shaft parts. The output shaft of the rotary drive motor can be rigidly connected to the clamping block 42 through a coupling. The coupling can be an elastic coupling or a diaphragm coupling. For example, an elastic coupling is used to compensate for axial deviation and reduce vibration.

[0056] Furthermore, the flexible coupling consists of two metal flanges and an intermediate elastic body, capable of compensating for axial, radial, and angular misalignments to ensure smooth power transmission. The clamping block 42 is made of hard alloy material, with anti-slip textures on its inner surface to increase friction with shaft parts. During testing, the rotary drive motor can control the rotation of the clamping block 42 and shaft parts according to a preset speed and acceleration curve, achieving precise speed control and smooth start-stop.

[0057] After the clamping block 42 fixes the shaft-like part under the drive of the clamping cylinder 41, the rotary drive motor is activated, transmitting torque to the clamping block 42 through the coupling, causing the clamping block 42 and the shaft-like part to rotate synchronously. The speed of the rotary drive motor can be set from 50 to 500 rpm, and the specific value can be adjusted according to the size of the shaft-like part and the inspection requirements. The synchronous rotation of the clamping block 42 and the shaft-like part enables the inspection probe 44 to collect dynamic balance data under dynamic conditions without manual intervention or external rotating equipment.

[0058] Specifically, after the shaft-like part is fixed by the clamping block 42, the rotary drive motor starts, and the output shaft drives the clamping block 42 to rotate via a coupling. The rigid connection of the coupling ensures no relative slippage during power transmission, avoiding rotation angle deviation due to mechanical backlash. The clamping block 42 drives the shaft-like part to rotate continuously at a preset speed, and the detection probe 44 measures the radial runout or mass distribution data of the part in real time during the rotation. The cooperation between the clamping component and the detection probe 44 does not rely on external equipment or manual operation to rotate the part. The direct connection between the rotary drive motor and the clamping block 42 ensures the accuracy and stability of the rotation action. This design significantly improves inspection efficiency, reduces manual intervention, and enhances the automation level of the entire inspection process. At the same time, because the rotation process can be precisely controlled, it also provides a more reliable basis for subsequent data acquisition and analysis, helping to improve the accuracy of the inspection results.

[0059] Specifically, the detection mechanism 4 is equipped with a support plate 43 for receiving shaft-like parts. The supporting horizontal plane of the support plate 43 is lower than the clamping horizontal position of the clamping component. The supporting horizontal plane of the support plate 43 is set as the detection station, and a height difference is provided between the supporting horizontal plane of the support plate 43 and the clamping horizontal position of the clamping component. The value of this height difference can be between 5 mm and 20 mm. The upper surface of the support plate 43 is machined into a flat plane or an arc-shaped concave surface adapted to the outer circle of the shaft-like parts, so that when the shaft-like parts enter the detection station of the detection mechanism 4, they can be supported in the arc-shaped concave surface of the support plate 43, thereby achieving preliminary positioning of the shaft-like parts.

[0060] The clamping block 42 of the clamping component moves horizontally during the clamping action. The inner side of the clamping block 42 is provided with a groove structure that matches the shaft end of the shaft part, or the inner side of the clamping block 42 is provided with a pin structure that matches the shaft end of the shaft part. Different clamping blocks 42 are set according to the size specifications of the shaft part so that the clamping block 42 meets the centering clamping requirements of the shaft part. For example, if the shaft end of the shaft part is a groove structure, by setting a tapered pin on the inner side of the clamping block 42, the pin can be inserted into the groove structure of the shaft part, so that the shaft part can be automatically centered during the clamping process.

[0061] Furthermore, after the clamping block 42 completes the clamping action, the shaft part can be lifted to the clamping horizontal position under the action of the clamping blocks 42 on both sides. At this time, a gap of 0.5 mm to 3 mm is formed between the support plate 43 and the shaft part, ensuring that the shaft part will not come into contact with the support plate 43 during rotation, thereby ensuring the accuracy of the dynamic balance test of the shaft part.

[0062] Specifically, the detection mechanism 4 provides stable support and precise positioning for shaft-like parts. The support plate 43 supports the shaft-like parts, allowing them to be initially positioned and limited before clamping, preventing them from sagging or shifting due to their own weight, thus ensuring the accuracy of the clamping position. Simultaneously, the horizontal plane of the support plate 43 is lower than the clamping position of the clamping component, allowing the shaft-like parts to be lifted during clamping, creating a gap with the support plate 43. This ensures free rotation of the shaft-like parts during dynamic balancing testing, improving the accuracy of the detection and effectively solving the problems of positional shift and gravity-induced sagging that may occur during clamping and testing of shaft-like parts, significantly improving the reliability and accuracy of dynamic balancing testing.

[0063] Specifically, the top surface of the pallet 22 is provided with a plurality of positioning grooves at intervals along the conveying direction, each positioning groove corresponding to a specific placement position. The groove shape of the positioning groove is adapted to the outer circle of the shaft part, and the positioning groove is used to limit the position of the shaft part during the lifting and translating of the pallet 22. The positioning grooves are arranged at intervals along the conveying direction, and the spacing between adjacent grooves is consistent with the spacing of a plurality of slots 111 of the baffle 11. The spacing can be between 50mm and 150mm to ensure that each part has an independent fixed area on the pallet 22, avoiding mutual contact or stacking. The arc contour of the groove matches the outer circle of the shaft part, and the groove depth can be set to 0.6 to 1.2 times the radius of the part, limiting the rolling or sliding of the part by increasing the contact area. When the pallet 22 is lifted, the sidewall of the groove forms a radial constraint on the part; when translated, the front and rear ends of the groove respectively block the forward and backward displacement of the part along the conveying direction. The pallet 22 and the lifting motor 21 are driven by a linear module. The moving distance of the linear module is the same as the spacing of the positioning grooves, so that the linear module can perform a forward drive once to meet the moving requirements of several shaft parts to move forward one slot 111 position, thereby realizing the step-by-step conveying of several shaft parts by the conveyor line 1.

[0064] Specifically, during the lifting process of the pallet 22, the positioning groove wraps around the outer surface of the shaft-like part through its arc-shaped sidewall, counteracting the inertial force caused by the lifting acceleration and preventing the part from deviating from the preset position in the vertical direction. When the pallet 22 translates, the front wall of the groove contacts the end face of the part, restricting its forward sliding; the rear wall of the groove contacts the other end of the part, restricting its backward sliding. After the pallet 22 moves to the target position, it descends, and the positioning groove precisely releases the part into the corresponding slot 111. Since the positions of the groove and the slot 111 correspond one-to-one, and the translation distance is consistent with the spacing of the slots 111, the part remains aligned with the target slot 111 throughout the entire lifting and translation process, ultimately achieving millimeter-level positioning accuracy.

[0065] Furthermore, the positioning groove can be semi-circular, with a depth of 1 / 4 to 1 / 3 of the shaft part's diameter. The width of the positioning groove can be slightly larger than the shaft part's diameter, for example, 0.5-1 mm larger, to facilitate the insertion and removal of the shaft part. The inner surface of the positioning groove can be polished to reduce friction with the shaft part. Both ends of the positioning groove can be designed as bevels to facilitate the insertion of the shaft part. Thus, the shaft part can be stably placed in the positioning groove without any positional shift or tilting during the lifting and translating of the pallet 22.

[0066] Through the above technical solution, the pallet 22 can effectively prevent the shaft parts from shifting or tilting during the lifting and translating process of the pallet 22. The design of the positioning groove allows the shaft parts to be stably fixed on the pallet 22, and they will not move even when the pallet 22 is in motion. This structural design ensures that the shaft parts can be accurately moved to the target slot 111, improving the accuracy of conveying and positioning. At the same time, the design of the positioning groove also reduces the impact of mechanical vibration on the position of the shaft parts, further improving the stability and reliability of the entire dynamic balancing test process.

[0067] Specifically, a linear module is provided below the conveyor line 1. The guide rail of the linear module is arranged along the conveying direction of the conveyor line 1. The lifting motor 21 is fixed on the slider of the linear module. The moving distance of the slider in the linear module is set as the distance between two adjacent placement positions. When the linear module drives the lifting motor 21 to move, the lifting motor 21 can move several shaft parts forward by one slot 111 based on the pallet 22, realizing step-by-step conveying.

[0068] Furthermore, the linear module includes high-precision transmission components, such as ball screws or synchronous belt structures. The guide rail is fixed to the bottom frame of the conveyor line 1 by bolts, and its extension direction is parallel to the arrangement direction of the slots 111. The slider forms a linear motion pair with the guide rail through a sliding seat. The lifting motor 21 is rigidly connected to the slider through a mounting plate. Reinforcing ribs can be set between the mounting plate and the slider to improve structural stability. When the lifting motor 21 drives the support plate 22 to lift the shaft part out of the slot 111, the drive motor of the linear module starts synchronously, pushing the slider to move a set distance along the guide rail. The support plate 22 completes the translational movement in the lifted state, avoiding interference with the side wall of the slot 111. During the movement, the linear guiding effect of the guide rail constrains the movement trajectory of the slider and eliminates lateral offset error. When the support plate 22 descends, the shaft part is accurately placed in the front slot 111, and at the same time, the support plate 22 and the shaft part are separated. The slider reset action of the linear module is achieved by reverse drive. By matching the moving distance with the spacing of slot 111, each translation stroke directly corresponds to the target slot, eliminating the need for additional adjustments to the positioning reference. The closed-loop control system of the linear module can compensate for transmission errors in real time, ensuring consistent slot alignment during the transport of multiple batches of parts.

[0069] Furthermore, by setting a linear module to perform the translation operation on the lifting motor 21, the movement accuracy and positioning stability of the translation mechanism 3 are improved. The guide rail of the linear module is arranged along the conveying direction to ensure that the translation path is consistent with the direction of the conveyor line 1, avoiding deviation of the movement trajectory. The lifting motor 21 is fixed on the slider of the linear module to form a rigid connection, maintaining the synchronization between the pallet 22 and the shaft parts. The slider movement distance is set to the spacing between adjacent placement positions, directly limiting the correspondence between each translation stroke and the target slot, ensuring that the shaft parts are accurately aligned with the next slot 111 position after each movement. This design solves the positioning offset problem caused by inaccurate stroke control in traditional translation mechanisms, improves the alignment accuracy of shaft parts during the translation process, and thus improves conveying efficiency and synchronization.

[0070] Specifically, the detection probe 44 can be a laser displacement sensor. A lifting cylinder is installed on the top of the detection probe 44, and the piston rod of the lifting cylinder is fixedly connected to the detection probe 44. The lifting cylinder drives the detection probe 44 to rise and fall vertically to a preset detection position. The laser displacement sensor emits a laser beam to the surface of the shaft-like part and receives the reflected light signal. This non-contact measurement method avoids wear caused by mechanical contact. The preset detection position is recorded by an encoder at the end point of the lifting cylinder's stroke, achieving automatic positioning of the detection probe 44 after rising and falling. The positioning repeatability is controlled within ±0.05mm. The cylinder body of the lifting cylinder is rigidly connected to the frame of the conveyor line 1 by bolts. The cylinder output thrust range is set to 200-500N to resist vibration interference generated during the detection process.

[0071] Specifically, after the shaft-like part is fixed in the inspection station by the clamping component, the lifting cylinder drives the inspection probe 44 to rise or fall vertically according to a preset program. For example, for a shaft-like part with a diameter of 30mm, the probe falls to a measurement reference position 50mm away from the part surface. After the laser displacement sensor reaches the lifting position, it emits a laser beam and captures the radial runout of the part in real time using triangulation. If inspecting parts of different diameters, the lifting cylinder can adjust the probe height to keep the measurement distance constant. For example, the measurement reference can be uniformly set to the optimal focusing position when the laser beam incident angle is 45°. After completing the height adjustment, the lifting cylinder locks the piston rod position and maintains the probe posture stability through the internal air pressure of the cylinder, avoiding reference offset caused by mechanical loosening during the measurement process.

[0072] Furthermore, the lifting cylinder drives the detection probe 44 to rise and fall, enabling flexible adjustment of its height to meet the inspection needs of shaft parts of different sizes. The non-contact measurement of the laser displacement sensor avoids interference caused by mechanical contact, improving inspection accuracy. The precise control of the lifting cylinder allows the probe to be quickly positioned to the preset height, reducing manual intervention and improving inspection efficiency.

[0073] Specifically, the conveyor line 1 is equipped with several support legs, each of which is connected to a height-adjustable foot at its bottom via a threaded connection or a nested sleeve structure. The height-adjustable foot can be a manually screwed type or equipped with an electric drive device for height adjustment. The axes of the support legs and the foot are kept perpendicular to ensure the stability of the support structure during adjustment. When the conveyor line 1 is installed on uneven ground, the height of each support leg's bottom foot is adjusted to bring the entire frame of the conveyor line 1 to a level state. For example, when there is a local depression in the ground, the corresponding support leg foot is screwed out to increase the effective support height, while the foot in the raised area is retracted to reduce the support height. During adjustment, a level is placed on the surface of the conveyor line 1 to monitor the levelness deviation in real time until the deviation in each direction is less than 0.5 mm per meter. Therefore, shaft parts will not slide or shift during the conveying process due to the tilt of conveyor line 1, and the positional accuracy of the lifting component and the detection mechanism 4 is guaranteed. At the same time, the independent adjustment capability of the height-adjustable feet allows conveyor line 1 to adapt to different site conditions. The support frame and the frame of conveyor line 1 are rigidly connected by bolts to ensure the stability of the support structure.

[0074] This application addresses the issue of equipment tilting due to uneven ground installation or long-term use by independently adjusting the height of the base feet of each support leg 12, thus achieving precise compensation for the levelness of the conveyor line 1. This structure avoids the drawbacks of traditional welded fixed support legs, ensuring that shaft-like parts maintain a stable posture during transport and preventing slippage of parts or positioning deviation of the detection probe 44 caused by local tilting of the conveyor line 1. The adjustment process does not require disassembling the support structure; fine-tuning of the height can be achieved simply by rotating the base feet, significantly shortening equipment installation and commissioning time and improving maintenance efficiency.

[0075] In some of the solutions described above in this application, if the lifting and translating movements are performed in steps, it will cause a time delay when shaft parts are transferred between slots 111, affecting the overall efficiency of the production line. At the same time, the step-by-step actions may cause positional deviations, affecting the conveying accuracy.

[0076] This invention provides a dynamic balancing testing production line and control method for shaft parts. By setting up a stepping conveyor line 1 in conjunction with a testing mechanism 4 in the middle of the conveyor line 1, the automated conveying and dynamic balancing testing of several shaft parts can be achieved, reducing labor costs and improving the efficiency of dynamic balancing testing of shaft parts.

[0077] Example 2:

[0078] Please refer to Figure 6 This invention also provides a control method for a dynamic balancing testing production line for shaft parts, the control method comprising:

[0079] S1: Obtain the testing work data of the testing organization 4, and generate a transmission instruction based on the testing work data.

[0080] By integrating a high-precision position sensor 45 to monitor the occupancy status of the inspection station in real time, the initial working state of the inspection mechanism 4 is obtained. When the shaft-type part is transported to the inspection station via the conveyor line 1, the position sensor 45 identifies preset features, such as detection distance data, and triggers a jump from "idle" to "occupied" in the station status flag within the management system. Based on this trigger signal, the system activates the clamping component, and the clamping block 42 achieves centering and clamping of the shaft-type part. At the same time, the rotary drive motor drives the shaft-type part to rotate. While the shaft-type part is rotating, the inspection mechanism 4 drives the inspection probe 44 to move downward, realizing dynamic balance detection of the shaft-type part.

[0081] Furthermore, the management system of the shaft parts dynamic balancing inspection production line identifies whether the shaft parts located at the inspection station have completed inspection based on the inspection data of the inspection mechanism 4. If so, it drives the conveyor line 1 to perform the conveying task.

[0082] S2: Based on the transmission command, control the conveyor line 1 to move several shaft-type parts forward synchronously by one placement position using step conveying;

[0083] Specifically, the lifting motor 21 drives the pallet 22 to rise, lifting the shaft parts from the slot 111; while the pallet 22 rises, the translation mechanism 3 drives the lifting motor 21 and the pallet 22 to move forward synchronously by one slot length; the lifting motor 21 drives the pallet 22 to fall, placing the shaft parts into the slot 111 in front; the translation mechanism 3 drives the lifting motor 21 to move backward, resetting to the initial position.

[0084] The synchronous control of the lifting motor 21 and the translation mechanism 3 can be achieved through a motion controller, such as using PLC programming to coordinate their action timing. The lifting stroke of the pallet 22 can be set to 20-50 mm, and the translation distance matches the spacing between adjacent slots 111, for example, set to an integer multiple of the slot spacing. The driving speed of the lifting motor 21 and the moving speed of the translation mechanism 3 can be set to the same acceleration curve, so that the pallet 22 completes horizontal displacement during the lifting process. The lowering action of the pallet 22 and the resetting action of the translation mechanism 3 can be executed independently or partially overlapped, for example, the translation mechanism 3 has already started resetting before the pallet 22 descends to the target slot 111.

[0085] Specifically, when the pallet 22 is driven upward by the lifting motor 21, the shaft part disengages from the original slot 111. At this time, the translation mechanism 3 simultaneously pushes the pallet 22 forward along the guide rail. Since the lifting and translation operations overlap in time, the time consumed for a single transfer is reduced by 30%-50%. After the pallet 22 moves directly below the target slot 111, the lifting motor 21 drives the pallet 22 to descend, and the shaft part is precisely placed in the new slot 111, with the positioning error controllable within ±0.5 mm. The translation mechanism 3 then drives the lifting motor 21 back to the initial position, ready to execute the next cycle. Through timing optimization, the pallet 22 completes 80% of the horizontal displacement during the rising phase, and the remaining 20% ​​is completed during the descending phase, further shortening the reset time. This control method shortens the shaft part transfer cycle to 2-3 seconds, improving efficiency by more than 40% compared to step-by-step operation, while eliminating the cumulative positioning error caused by step-by-step actions.

[0086] S3: Identify whether there are shaft-type parts at the detection station of the detection mechanism 4. If yes, drive the detection mechanism 4 to perform the detection work. If no, return to step S2.

[0087] Several position sensors 45 are installed at the inspection station. The detection direction of the position sensors 45 is towards the inspection station, so that when a shaft-type part enters the inspection station, the position sensors 45 can detect the position of the shaft-type part located at the inspection station. That is, the position sensors 45 are used to detect whether a shaft-type part is present at the inspection station. The position sensors 45 can be infrared sensors, which emit infrared light towards the shaft-type part at the inspection station. Based on the detection data of the position sensors 45, the presence of a shaft-type part at the inspection station can be identified, so as to regulate the working state of the shaft-type part dynamic balancing inspection production line.

[0088] S4: Repeat steps S1 to S3 to achieve step-by-step conveying and continuous inspection of shaft parts.

[0089] The dynamic balancing detection method for shaft parts provided in this invention shortens the transfer time interval between workstations and eliminates the waiting time caused by equipment reset in step-by-step operations. The coordinated control of lifting and translation reduces inertial errors caused by repeated start-stop of mechanical components, ensuring that parts remain under control throughout the transfer process. The pallet begins to move during the lifting phase, utilizing the non-working stroke of the rising process to complete the position switch, shortening the single transfer cycle to the duration of a single lifting action. The reset action of the translation mechanism after the part is placed is independent of the lifting process, avoiding interference with subsequent conveying flows, thereby achieving uninterrupted continuous conveying.

[0090] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

[0091] Furthermore, the above provides a detailed description of a dynamic balancing testing production line and control method for shaft parts provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A shaft part dynamic balance detection production line, characterized in that, The detection line comprises a conveying line and a detection mechanism arranged at a middle position of the conveying line, the conveying line is provided with two symmetrically arranged baffles, a plurality of clamping grooves are arranged on each baffle at intervals along the conveying direction, and any two oppositely arranged clamping grooves jointly form a placement position of a shaft part; One end of the bottom of the conveying line is provided with a lifting conveying assembly and a translation mechanism, the lifting conveying assembly comprises a supporting plate and a lifting motor, the output end of the lifting motor is drivingly connected with the supporting plate, the supporting plate is located below the plurality of placement positions, the lifting motor drives the supporting plate to move upward and downward to drive the plurality of shaft parts to be synchronously lifted upward and separated from the clamping grooves; The output end of the translation mechanism is drivingly connected with the lifting motor, when the lifting motor drives the supporting plate to move upward, the translation mechanism synchronously drives the lifting motor to move forward along the conveying direction, so that the supporting plate drives the shaft parts to move forward by a distance corresponding to the slot position of the clamping groove; The clamping grooves are arranged at middle positions of the baffles, when the lifting motor drives the supporting plate to be lifted, the shaft parts are partially located between the two baffles, and the two baffles limit the shaft parts; The detection mechanism comprises a detection station arranged at a middle position of the conveying line, clamping components arranged on both sides of the clamping station, and a detection probe arranged above the detection station; The clamping components comprise a clamping cylinder and a clamping block, the cylinder body of the clamping cylinder is fixed to the side of the conveying body, the clamping block is fixed to the end of the piston rod of the clamping cylinder, and the clamping cylinder drives the clamping block to move close to or away from the shaft part; The detection station is provided with a support plate for supporting the shaft part, the support level of the support plate is lower than the clamping horizontal position of the clamping component, the support level of the support plate is arranged as the detection station, and a height difference is arranged between the support level of the support plate and the clamping horizontal position of the clamping component; The upper surface of the support plate is processed as a plane or an arc-shaped concave surface matched with the outer circle of the shaft part, when the shaft part enters the detection station of the detection mechanism, the shaft part is correspondingly supported in the arc-shaped concave surface of the support plate to complete the preliminary positioning operation; The translation mechanism is a linear module, and the guide rail of the linear module is arranged along the conveying direction of the conveying line; The lifting motor is fixed to the sliding block of the linear module, and the moving distance of the sliding block in the linear module is set as the interval between adjacent two placement positions; When the supporting plate is lifted to separate the parts from the clamping grooves, the translation mechanism drives the parts to move forward by one station interval, the synchronous lifting of the plurality of shaft parts is realized through the supporting plate, and the synchronous forward movement of the plurality of shaft parts is realized, so that the lifting, translation and falling operations are synchronously completed in one lifting stroke, and a step-by-step conveying is formed.

2. The shaft part dynamic balance detection production line according to claim 1, characterized in that, The detection mechanism further comprises a rotary drive motor, the output shaft of the rotary drive motor is drivingly connected with the clamping block of the clamping component through a shaft coupling to drive the clamping block and the shaft part to synchronously rotate.

3. The shaft part dynamic balance detection production line according to claim 1, characterized in that, The top surface of the supporting plate is provided with a plurality of positioning grooves at intervals in the conveying direction, and the position of each positioning groove corresponds to the placing position one by one. The groove type of the positioning groove is matched with the outer circle of the shaft part, and the positioning groove is used to limit the position of the shaft part during the lifting and translation of the supporting plate.

4. The shaft part dynamic balance detection production line according to claim 1, characterized in that, The detection probe is a laser displacement sensor, the top of the detection probe is provided with a lifting cylinder, the piston rod of the lifting cylinder is fixedly connected with the detection probe, and the lifting cylinder can drive the detection probe to vertically lift to a preset detection position.

5. The shaft part dynamic balance detection production line according to claim 1, characterized in that, The bottom of the conveying line is provided with a plurality of supporting legs, and the supporting legs are used to support the supporting plate.

6. The shaft part dynamic balance detection production line according to claim 1, characterized in that, The two sides of the conveying line are provided with protective fences in the conveying direction, the side of the detection station is provided with an emergency stop button, and the emergency stop button is electrically connected with the control circuit of the dynamic balance detection production line.

7. A control method of an axial part dynamic balance detection production line, characterized in that, The control method is suitable for the shaft part dynamic balance detection production line as claimed in any one of claims 1 to 6. The control method comprises: S1: obtaining detection working data of the detection mechanism, and generating a transmission instruction according to the detection working data; S2: controlling the conveying line to synchronously forward a plurality of shaft parts by one placing position in a step-by-step manner based on the transmission instruction; S3: identifying whether the detection station of the detection mechanism exists a shaft part, if yes, driving the detection mechanism to perform detection work, if not, returning to step S2; S4: repeating steps S1 to S3 to realize step-by-step conveying and continuous detection of the shaft parts.

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