A method for detecting the shaft extension dimension of a DC motor

Abstract

This invention discloses a method for detecting the shaft extension dimensions of a DC motor, comprising the following steps: DC motor placement—DC motor transmission—DC motor jacking and positioning—motor shaft extension length detection—DC motor output. This invention is ingeniously and rationally designed. The detection process of this invention can simultaneously detect the extension shaft lengths of multiple DC motors, effectively improving actual detection efficiency. After the DC motor is placed on the tooling table, it is directly transmitted via a conveyor belt. After detection, the DC motor is output via an output platform. The entire detection process is highly automated, effectively reducing manual labor intensity and saving labor costs. The entire detection process is reasonable and clear. During detection, the DC motor is pressed and fixed in place, effectively preventing displacement of the DC motor during detection and improving actual detection accuracy. The entire detection process integrates tooling, transmission, detection, and output, is simple to operate, and is convenient for factory-scale testing.

Description

Technical Field

[0001] This invention belongs to the field of DC motor testing technology, specifically relating to a method for testing the shaft extension dimensions of a DC motor. Background Technology

[0002] In many industrial sectors, such as large rolling mills, large precision machine tools, mine winches, urban trams, and cable equipment, where consistent linear speed is strictly required, DC motors are typically used as prime movers to drive the machinery. The motor's internal mechanism converts input electrical energy into mechanical energy through a magnetic field, which is then transmitted to other mechanisms via the shaft. Therefore, strictly defining the structure and performance of the motor shaft is crucial. The extended shaft of the DC motor is used to connect and transmit power to other equipment, making its length an important inspection item. Current technology generally uses calipers or vernier calipers for measurement, but only one DC motor's extended shaft can be inspected at a time, resulting in slow inspection efficiency and requiring manual handling of the DC motor, which is labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to provide a technical solution for detecting the shaft extension dimensions of DC motors, addressing the shortcomings of existing technologies. The invention features a clever and reasonable design, allowing for the simultaneous detection of the extension shaft lengths of multiple DC motors, effectively improving actual detection efficiency. After the DC motors are placed on the tooling table, they are directly transported via a conveyor belt, and after detection, the output is processed via an output platform. The entire detection process is highly automated, effectively reducing manual labor intensity and saving labor costs. The entire detection process is reasonable and clear; during detection, the DC motors are pressed and fixed in place, effectively preventing displacement and improving actual detection accuracy.

[0004] To solve the technical problem, the present invention adopts the following technical solution:

[0005] A method for detecting the shaft extension dimension of a DC motor includes the following steps:

[0006] Step 1: Placement of the DC motor. Place the mounting base on the tooling table, then place the placement rack on the mounting base. The mounting base has an I-shaped slider, and the placement rack has an I-shaped groove. The I-shaped slider matches the I-shaped groove, and the placement rack slides and engages with the I-shaped slider through the groove. The placement rack has at least two placement cavities. Insert the DC motor into the corresponding placement cavity, with the tail end of the DC motor abutting the closed end of the placement cavity, and the front end of the DC motor extending out of the placement cavity. The length of the DC motor extending out of the placement cavity is less than five-tenths of the overall length of the DC motor body. One-third of the design ensures the stability and reliability of the DC motor's placement on the mounting frame. The design of multiple placement chambers allows multiple DC motors to be placed on the same mounting frame at the same time, thereby enabling simultaneous detection of the shaft extension length of multiple DC motors and effectively improving detection efficiency. The design of the I-shaped slide and I-shaped slider reasonably improves the snap-fit ​​between the mounting frame and the mounting base. Moreover, the I-shaped slide is preferably designed with a closed structure at one end, which makes it easier to accurately assemble and position the mounting frame and the mounting base. This design will not affect the subsequent push-pull component to push the mounting frame out of the mounting base as a whole, ensuring structural stability.

[0007] Step 2: Push the mounting base towards the conveyor table. The mounting base drives the placement frame and DC motor to move synchronously towards the conveyor table, and the conveyor table runs. The conveyor table transports the mounting base away from the tooling table until the mounting base touches the limit baffle on the conveyor table. The DC motor is then in place, and the conveyor table stops running. The conveyor table transports the mounting base together with the placement frame, thus realizing the transport of the DC motor. The displacement is limited by the limit baffle, realizing the precise transport and positioning of the DC motor. When the mounting base touches the tooling table, it indicates that the DC motor is precisely transported and positioned, which facilitates the subsequent push assembly to accurately push the DC motor to the testing table for testing operations. The limit baffle is fixed to the frame of the conveyor table with screws to ensure the installation is firm. The conveyor table and output table preferably use belt conveyors to realize the automatic transport and output of the DC motor and improve the automation level of the entire testing process.

[0008] Step 3: Adjust the jacking assembly. The jacking assembly pushes the placement frame towards the inspection table. During the movement, the placement frame gradually disengages from the mounting base until it contacts the limiting boss on the inspection table. The jacking assembly then stops. The jacking assembly acts directly on the placement frame, gradually pushing it off the mounting base and onto the inspection table. The top surface of the inspection table is level with the bottom surface of the placement frame, allowing the placement frame to be smoothly pushed onto the inspection table. This makes the entire jacking process more stable and efficient. The limiting boss on the inspection table limits the jacking, ensuring the placement frame is pushed into place, which is beneficial for subsequent inspection operations. After the placement frame and DC motor are pushed onto the inspection table, the mounting base remains on the conveyor. The conveyor then reverses the conveyor to the tooling table, facilitating the tooling placement of the next set of DC motors. This allows the tooling placement of the next set of DC motors to be synchronized with the inspection process of the previous set, effectively improving actual inspection efficiency.

[0009] Step 4: Adjust the lower pressure plate so that it moves down and presses against the top of the DC motor; after the placement rack drives the DC motor to be placed and positioned on the test table, the lower pressure plate presses and limits the DC motor from above, so as to achieve stable placement of the DC motor and the placement rack on the test table, which is more convenient for subsequent testing and avoids displacement of the placement rack and DC motor during the testing process, which would affect the actual testing results;

[0010] Step 5: Adjust the testing plate. A base plate is installed under the testing platform. Move the testing plate horizontally along the base plate until it touches the front end face of the DC motor body. The testing plate has at least two auxiliary testing frames, each corresponding to a placement cavity. Adjust the auxiliary testing frames sequentially until the shaft end plates on the auxiliary testing frames touch the motor shaft end face of the corresponding DC motor. The base plate has scale lines. Read the corresponding scale position 'a' on the scale line where the plane on the testing plate is attached to the motor body, and read the corresponding scale position 'b' on the scale line where the plane on the shaft end plate is attached to the motor shaft end. Calculate the distance between 'a' and 'b' to determine the measurement of the corresponding DC motor. Shaft extension length; the number of auxiliary testing frames corresponds to the number of placement cavities, so that each DC motor in the placement cavity corresponds to an auxiliary testing frame. By using a testing plate in conjunction with several auxiliary testing frames, the shaft extension length of multiple DC motors can be tested, effectively improving the testing effect. The testing plate abuts against the extension end face of the body of multiple DC motors, and then the several auxiliary testing frames are adjusted in sequence so that the shaft end plate on each auxiliary testing frame abuts against the shaft end face of the corresponding DC motor shaft. Each shaft end plate corresponds to a position b on the scale line, and in conjunction with the position a on the scale line of the testing plate, the distance length between a and b is calculated, and then the shaft extension length of the corresponding DC motor is calculated.

[0011] Step Six: Adjust the detection plate to reset its position. Then, place the auxiliary platform support on the side of the detection platform. Supporting folding rods are installed at both ends of the side of the detection platform. Place the auxiliary platform between the two supporting folding rods, ensuring its top surface is flush with the top surface of the limiting boss. Adjust the lower pressure plate to reset its position. Adjust the lifting mechanism to raise the placement frame until its bottom surface is flush with the top surface of the limiting boss. Adjust the pushing assembly to push the placement frame onto the auxiliary platform. The robotic arm then picks up the placement frame along with the tested DC motor and places it onto the output platform. The output platform then transmits the tested DC motor and placement frame together. The detection plate moves the auxiliary detection frame to reset, facilitating the subsequent pushing and outputting of the placement frame and tested DC motor. After the detection plate resets, space is available on the side of the detection platform. Place the auxiliary platform support on the two supporting folding rods. The system ensures that both ends of the auxiliary platform extend with corresponding support rods, and the vertical sections of the support rods precisely limit the sides of the auxiliary platform, effectively guaranteeing its stability. A lifting mechanism then raises the placement frame along with the DC motor, ensuring the bottom surface of the placement frame is flush with the top surface of the limiting boss, eliminating any height difference. This facilitates the subsequent pushing component's smooth placement of the frame onto the auxiliary platform. The robotic arm then picks up the placement frame along with the DC motor and places it onto the output platform, which transports it to the next inspection process. This automatic output of the inspected DC motor significantly improves efficiency and automation. After the DC motor inspection output, the lifting and pushing mechanisms are reset for the next DC motor inspection, and the auxiliary platform is removed. Furthermore, the placement frame is equipped with gripping handles on both sides, a well-designed feature that facilitates easy gripping by the robotic arm.

[0012] Furthermore, in step two above, a limit stop and an adjusting stop are provided on the conveyor platform. One end of the limit stop is engaged with a limit baffle and fixed with screws, and one end of the adjusting stop is engaged with the limit baffle and fixed with a tightening screw. A moving groove is formed between the limit stop and the adjusting stop. The position of the adjusting stop is adjusted according to the actual width of the mounting base so that the size of the moving groove matches the mounting base. When the conveyor platform transports the moving mounting base, the mounting base always moves along the moving groove. The structural design is compact and reasonable. The limit stop and adjusting stop are designed to guide and limit the two sides of the mounting base, ensuring that the mounting base always moves and is transported along the moving groove formed between the two stops, avoiding transmission problems. The system effectively improves the stability and accuracy of the conveyor's transmission by mitigating factors such as base misalignment. This ensures precise positioning of the DC motor after transmission, facilitating subsequent operations. The limit stop and limit baffle are fixedly connected, while the adjusting stop and limit baffle are adjustable, allowing the distance between them to be adjusted according to the actual width of the mounting base. Furthermore, the actual height of the limit stop and adjusting stop does not exceed the thickness of the mounting base, ensuring that they only guide and restrict the mounting base without affecting the subsequent pushing operation of the jacking assembly on the placement frame. During the jacking operation, the mounting base will not move synchronously with the placement frame due to the limitations imposed by the limit stop and adjusting stop.

[0013] Furthermore, in step three above, the adjustment steps for the jacking component are as follows:

[0014] 1. The jacking assembly includes a jacking cylinder, a jacking plate, and a guide plate. The jacking cylinder is fixed on the guide plate, and the piston rod end of the jacking cylinder is fixedly connected to the jacking plate.

[0015] 2. The piston rod of the push cylinder extends, pushing the push plate towards the placement frame and gradually contacting it. This pushes the placement frame towards the testing table, until it contacts the limiting boss on the testing table, at which point the push cylinder closes. During the DC motor testing process, the push plate remains in contact with the rear side of the placement frame, working in conjunction with the limiting boss to restrict the front-to-back displacement of the placement frame and ensure the stability of the placement frame on the testing table.

[0016] 3. At the same time, an extension rod is provided on the push plate and a guide groove is provided on the guide plate. The extension rod is slidably engaged in the guide groove. During the movement of the push plate, the extension rod slides synchronously along the guide groove. The top of the extension rod is provided with a bent section, which is always limited and supported on the guide plate.

[0017] The pushing plate is moved by extending the piston rod of the pushing cylinder, thereby realizing the pushing operation of the placement frame. The pushing cylinder is preferably a multi-section cylinder to ensure the pushing stroke. During the movement of the pushing plate, the guide plate is always guided and restricted by the guide groove, which effectively improves the stability and reliability of the pushing assembly during the pushing process. At the same time, the bent section at the top of the guide plate is always attached to and restricted on the guide plate. Through the suspension support of the bent section, the pushing plate is less prone to deformation, improving the overall structural stability and reliability of the pushing plate. The entire pushing operation is automated, making it simpler and more convenient to use.

[0018] Furthermore, in step four above, the adjustment steps for the lower pressure plate are as follows:

[0019] 1. A support plate is installed above the guide plate, and a pressing drive component is installed on the support plate. The pressing drive component includes a pressing motor, a pressing screw 1, and a pressing screw 2. The output end of the pressing motor is connected to a pressing pulley 1. The pressing screw 1 and the pressing screw 2 are vertically symmetrically arranged on both sides of the testing table. The bottom ends of the pressing screw 1 and the pressing screw 2 are rotatably connected to the testing table through bearings. The rotatable connection between the pressing screws and the testing table is achieved through the bearings, which will not affect the rotation adjustment of the two pressing screws driven by the pressing motor. The top end of the pressing screw 1 is connected to the pressing pulley 2 and the pressing pulley 3, and the top end of the pressing screw 2 is connected to the pressing pulley 4. Belts are tensioned between the pressing pulley 1 and the pressing pulley 2, and between the pressing pulley 3 and the pressing pulley 4. The pressing plate is threaded between the pressing screw 1 and the pressing screw 2.

[0020] 2. When the lower motor starts, it drives the lower screw 1 and lower screw 2 to rotate synchronously through lower pulley 1, lower pulley 2, lower pulley 3, lower pulley 4 and belt. When lower screw 1 and lower screw 2 rotate synchronously, the lower plate moves vertically along lower screw 1 and lower screw 2 until the lower plate moves down and presses against the DC motor.

[0021] 3. At the same time, guide columns are also set between the support plate and the testing table. The guide columns are symmetrically set on both sides of the testing table, and the lower pressure plate passes between the two guide columns. When the lower pressure plate moves vertically, it will slide synchronously along the guide columns.

[0022] The structure is compact and reasonable. The downward driving component enables the vertical movement of the lower pressure plate, thereby achieving the clamping and fixing of the DC motor by the lower pressure plate or the upward movement and reset of the lower pressure plate. The lower pressure plate presses the DC motor from above, and together with the push plate and the limiting boss restricting the front and rear sides of the placement frame, it effectively ensures the stable placement of the placement frame and DC motor on the testing table, avoiding the movement or displacement of the placement frame and DC motor during the DC motor testing process, which would affect the subsequent testing results. The lower pressure motor provides the power source, and the lower pressure pulley and belt realize the synchronous rotation of the first and second lower pressure screws, thereby causing the lower pressure plate with threads passing between the two lower pressure screws to move up or down. The design is reasonable, and the use and adjustment are convenient and automated, eliminating the need for manual adjustment and improving efficiency. At the same time, the lower pressure plate is always guided and limited by the guide column during vertical movement, further improving the verticality and stability of the lower pressure plate during vertical movement, and improving operational safety and reliability.

[0023] Furthermore, in step five above, the adjustment steps for the detection plate are as follows:

[0024] 1. A detection drive unit is provided on the bottom support plate. The detection drive unit includes a detection motor, a detection screw one, and a detection screw two. Detection screw one and detection screw two are symmetrically arranged laterally on both sides of the detection table. Detection screw one and detection screw two are rotatably connected to the detection table through bearings. The bearings realize the connection between the detection screw and the detection table without affecting the subsequent rotation adjustment of the detection screw. The output end of the detection motor is connected to detection pulley one. Detection pulley two and detection pulley three are connected to detection screw one. Detection pulley four is connected to detection screw two. Belts are tensioned and connected between detection pulley one and detection pulley two, and between detection pulley three and detection pulley four. The detection plate is threaded through between detection screw one and detection screw two.

[0025] 2. When the detection motor starts, the detection screws 1 and 2 rotate synchronously through the detection pulleys 1, 2, 3, and 4 and the belt. When the detection screws 1 and 2 rotate synchronously, the detection plate moves horizontally along the detection screws 1 and 2 until the detection plate contacts the front end face of the DC motor body.

[0026] The detection motor provides the power source, driving the synchronous rotation of detection screw one and detection screw two via a detection pulley and belt. This causes the detection plate, with its threads passing between the two detection screws, to move horizontally along the base support plate. The design is ingenious and reasonable, and the operation is convenient and automated. When the detection plate abuts against the front end face of the DC motor body, an index head is set on the side of the detection plate. Corresponding scale lines are set on the base support plate at the index head. Thus, the current position of the detection plate can be read in a timely manner through the index head and the corresponding scale lines, facilitating the subsequent calculation of the DC motor shaft extension length.

[0027] Furthermore, in step five above, the adjustment steps for the auxiliary testing frame are as follows:

[0028] 1. The auxiliary testing frame includes a shaft end plate, an adjusting rod, and an adjusting screw. The adjusting rod is fixedly connected to the testing plate. The shaft end plate is slidably engaged on the horizontal section of the adjusting rod. The adjusting screw is threaded through the vertical section of the adjusting rod. One end of the adjusting screw is rotatably connected to the shaft end plate via a bearing. The bearing connection enables the rotatable connection between the adjusting screw and the shaft end plate, thereby allowing the horizontal movement adjustment of the shaft end plate to be achieved by rotating the adjusting screw.

[0029] 2. Rotate the adjusting screw, which pushes the shaft end plate to slide along the adjusting rod until the shaft end plate moves and contacts the end face of the corresponding DC motor shaft.

[0030] 3. A vertical rod is provided at the bottom of the shaft end plate, and a measuring end is provided at the bottom end of the vertical rod. The measuring end is in contact with the bottom support plate, and a corresponding scale line is provided at the bottom support plate below the measuring end.

[0031] The structure is ingeniously and reasonably designed. By rotating the adjusting screw, the shaft end plate can be pushed to slide horizontally along the adjusting rod, making it convenient and simple to use. At the same time, a vertical rod is set on the shaft end plate, and a measuring end is set at the end of the vertical rod. Through the measuring end and the corresponding scale line set below it, the current position of the shaft end plate can be accurately read. The index head and the measuring end are both set with scale lines at the position of the bottom support plate. Multiple scale lines are horizontal and the zero scale line corresponds to each other, which effectively ensures the accuracy of the final reading value and also makes it easier to read and convert the value.

[0032] Furthermore, in step six above, the adjustment steps of the push assembly are as follows: the piston rod of the push cylinder continues to extend, and pushes the placement frame towards the auxiliary platform through the push plate until the placement frame is in place. After the placement frame is lifted into place, the push cylinder continues to push the placement frame through the push plate, so that the placement frame drives the DC motor to move to the auxiliary platform, thereby facilitating the subsequent gripping of the placement frame by the robot arm.

[0033] Furthermore, in step six above, the resetting step of the lower pressure plate is as follows: The lower pressure motor starts, and through lower pressure pulley one, lower pressure pulley two, lower pressure pulley three, lower pressure pulley four and the belt, the lower pressure screw one and lower pressure screw two rotate synchronously, so that the lower pressure plate moves vertically upward along lower pressure screw one and lower pressure screw two; the design is reasonable and the operation is automated. The lower pressure motor starts, and through the lower pressure pulleys and the belt, the two lower pressure screws rotate synchronously, and the lower pressure plate is moved up and reset, thereby facilitating the pressing operation of the next set of DC motors.

[0034] Furthermore, in step six above, the reset step of the detection plate is as follows: The detection motor is started, and the detection screws one and two rotate synchronously through the detection pulleys one, two, three, and four and the belt, which moves the detection plate away from the detection table to reset. The entire reset process is automated. Moving and resetting the detection plate facilitates the subsequent operation of the placement rack and the output of the DC motor, as well as the detection operation of the next set of DC motors.

[0035] Furthermore, in step six above, the adjustment steps for the lifting mechanism are as follows:

[0036] 1. The lifting mechanism includes a lifting cylinder and a lifting plate. The lifting cylinder is fixed to the testing platform. The piston rod end of the lifting cylinder is connected to the lifting plate. A through slot is provided on the testing platform, and the lifting plate is movably engaged in the through slot.

[0037] 2. The lifting cylinder is activated, the piston rod extends and pushes the lifting plate, the lifting plate then pushes the placement frame upward until the placement frame is in place.

[0038] The structure is ingeniously and rationally designed. The piston rod of the lifting cylinder extends and pushes the lifting plate upward. The lifting plate pushes the placement frame upward, raising it to be flush with the limiting boss. At the same time, the top surface of the limiting boss is flush with the top surface of the auxiliary platform. This facilitates the subsequent smooth and gradual pushing of the placement frame onto the auxiliary platform by the lifting assembly, making it easier for the robot arm to grasp the placement frame onto the output platform. The lifting operation is automated, convenient, and simple.

[0039] The present invention, by employing the technical solution, has the following beneficial effects:

[0040] This invention is ingeniously and rationally designed. Its testing process can simultaneously inspect the extended shaft lengths of multiple DC motors, effectively improving actual testing efficiency. After the DC motors are placed on the tooling table, they are directly transported via a conveyor belt. After testing, the output is processed via an output platform. The entire testing process is highly automated, effectively reducing manual labor intensity and saving labor costs. The entire testing process is reasonable and clear. During testing, the DC motors are clamped and fixed in place, effectively preventing displacement and improving actual testing accuracy. The entire testing system integrates tooling, transmission, testing, and output, making it simple to operate and suitable for factory-scale testing. Attached Figure Description

[0041] The present invention will be further described below with reference to the accompanying drawings:

[0042] Figure 1 This is a schematic diagram of the structure when the placement rack is placed on the mounting base in this invention;

[0043] Figure 2 for Figure 1 A structural diagram from another perspective;

[0044] Figure 3 This is a schematic diagram of the DC motor's state structure when it is placed on the mounting frame in this invention;

[0045] Figure 4 This is a schematic diagram of the state structure when the conveyor platform transmits the DC motor to the position in this invention;

[0046] Figure 5 This is a schematic diagram of the state structure of the jacking assembly when it is jacking the placement frame in this invention;

[0047] Figure 6 This is a schematic diagram of the state structure when the conveyor table transmits the mounting base back to the tooling table in this invention;

[0048] Figure 7 This is a schematic diagram of the state structure during the detection of the DC motor shaft extension length in this invention;

[0049] Figure 8 This is a schematic diagram of the state structure after the auxiliary platform is placed in this invention;

[0050] Figure 9 for Figure 8 A structural diagram from another perspective;

[0051] Figure 10 This is a schematic diagram of the state structure when the jacking assembly pushes the placement frame onto the auxiliary platform in this invention.

[0052] In the diagram: 1-DC motor; 2-Mounting base; 3-Placement frame; 4-I-shaped slider; 5-I-shaped groove; 6-Placement cavity; 7-Machine body; 8-Motor shaft; 9-Conveyor table; 10-Limit baffle; 11-Push assembly; 12-Detection table; 13-Limit boss; 14-Lower pressure plate; 15-Detection plate; 16-Bottom support plate; 17-Auxiliary detection frame; 18-Shaft end plate; 19-Scale line; 20-Supporting folding rod; 21-Auxiliary table; 22-Pushing mechanism; 23-Output table; 24-Limit baffle; 25-Adjusting baffle; 26-Securing screw; 27-Moving groove; 28-Push cylinder; 29-Push plate; 30-Guide plate; 31-Extension rod; 32-Guide groove; 3 3-Bending section; 34-Support plate; 35-Pressing motor; 36-Tooling table; 37-Pressing screw one; 38-Pressing screw two; 39-Pressing pulley one; 40-Pressing pulley two; 41-Pressing pulley three; 42-Pressing pulley four; 43-Belt; 44-Guide column; 45-Detection motor; 46-Detection screw one; 47-Detection screw two; 48-Bearing; 49-Detection pulley one; 50-Detection pulley two; 51-Detection pulley three; 52-Detection pulley four; 53-Adjusting rod; 54-Adjusting screw; 55-Vertical rod; 56-Measuring end; 57-Lifting cylinder; 58-Lifting plate; 59-Through slot; 60-Grip handle; 61-Indicator head. Detailed Implementation

[0053] like Figures 1 to 10 As shown, this invention provides a method for detecting the shaft extension dimension of a DC motor, comprising the following steps:

[0054] Step 1: Placement of DC Motor 1. Place the mounting base 2 on the tooling table 36, and then place the placement rack 3 on the mounting base 2. The mounting base 2 is provided with an I-shaped slider 4, and the placement rack 3 is provided with an I-shaped groove 5. The I-shaped slider 4 matches the I-shaped groove 5, and the placement rack 3 is slidably engaged with the I-shaped slider 4 through the I-shaped groove 5. The placement rack 3 is provided with at least two placement cavities 6. Insert the DC motor 1 into the corresponding placement cavity 6, with the tail end of the DC motor 1's body 7 abutting the closed end of the placement cavity 6, and the front end of the DC motor 1's body 7 extending out of the placement cavity 6. The length of the DC motor 1's body 7 extending out of the placement cavity 6 is less than the length of the DC motor 1's body. The overall length of 7 is one-fifth, ensuring the stability and reliability of the DC motor 1 on the mounting frame 3. The design of multiple mounting cavities 6 allows multiple DC motors 1 to be placed on the same mounting frame 3 at one time, thereby enabling simultaneous detection of the shaft extension length of multiple DC motors 1, effectively improving detection efficiency. The design of the I-shaped slide 5 and the I-shaped slider 4 reasonably improves the snap-fit ​​strength between the mounting frame 3 and the mounting base 2. Moreover, the I-shaped slide 5 is preferably designed with a closed structure at one end, which makes it easier to accurately assemble and position the mounting frame 3 and the mounting base 2. This design will not affect the subsequent push assembly 11 to push the mounting frame 3 out of the mounting base 2 as a whole, ensuring structural stability.

[0055] Step 2: Push the mounting base 2 towards the conveyor table 9. The mounting base 2 drives the placement frame 3 and DC motor 1 to move synchronously towards the conveyor table 9, and the conveyor table 9 runs. The conveyor table 9 transmits the mounting base 2 away from the tooling table 36 until the mounting base 2 touches the limit baffle 10 on the conveyor table 9, the DC motor 1 is delivered to the position, and the conveyor table 9 stops running. The conveyor table 9 transmits the mounting base 2 and transmits it together with the placement frame 3, thereby realizing the transmission of DC motor 1. The displacement is limited by the limit baffle 10 to achieve precise transmission and positioning of DC motor 1. When the mounting base 2 touches the tooling table 9, it means that DC motor 1 is precisely transmitted and positioned, which makes it easier for the subsequent push assembly 11 to accurately push DC motor 1 to the detection table 12 for detection operation. The limit baffle 10 is fixed to the frame screws of the conveyor table 9 to ensure the installation is firm. The conveyor table 9 and the output table 23 preferably adopt belt conveyors to realize the automatic transmission and output of DC motor 1 and improve the automation of the entire detection process.

[0056] The conveyor table 9 is equipped with a limit stop 24 and an adjusting stop 25. One end of the limit stop 24 is engaged with the limit baffle 10 and fixed with screws. One end of the adjusting stop 25 is engaged with the limit baffle 10 and fixed with a locking screw 26. A moving groove 27 is formed between the limit stop 24 and the adjusting stop 25. The position of the adjusting stop 25 is adjusted according to the actual width of the mounting base 2 so that the size of the moving groove 27 matches the mounting base 2. When the conveyor table 9 transports the moving mounting base 2, the mounting base 2 always moves along the moving groove 27. The structure is compact and reasonable. The design of the limit stop 24 and the adjusting stop 25 guides and limits the two sides of the mounting base 2, so that the mounting base 2 always moves and is transported along the moving groove 27 formed between the two stops, avoiding the mounting base 2 from shifting during transport. This design effectively improves the transmission stability and accuracy of the conveyor table 9, ensuring precise positioning of the DC motor 1 after transmission, facilitating subsequent operations. The limit stop 24 is fixedly connected to the limit baffle 10, while the adjustment stop 25 is adjustable to the limit baffle 10, allowing the distance between the limit stop 24 and the adjustment stop 25 to be adjusted according to the actual width of the mounting base 2, thus expanding its applicability. Furthermore, the actual height of the limit stop 24 and the adjustment stop 25 does not exceed the thickness of the mounting base 2, ensuring that the limit stop 24 and the adjustment stop 25 only guide and restrict the mounting base 2, without affecting the subsequent pushing operation of the jacking assembly 11 on the placement frame 3. During the jacking operation, due to the restrictions of the limit stop 24 and the adjustment stop 25, the mounting base 2 will not move synchronously with the placement frame 3.

[0057] Step 3: Adjust the pushing assembly 11. The pushing assembly 11 pushes the placement frame 3 towards the testing table 12. During the movement, the placement frame 3 gradually disengages from the mounting base 2 until the pushing assembly 11 pushes the placement frame 3 against the limiting protrusion 13 on the testing table 12, at which point the pushing assembly 11 stops. The pushing assembly 11 acts directly on the placement frame 3, gradually pushing the placement frame 3 out of the mounting base 2 and onto the testing table 12. The top surface of the testing table 12 is level with the bottom surface of the placement frame 3, allowing the placement frame 3 to be smoothly pushed onto the testing table 12, thus completing the entire pushing process. The process is more stable and reasonable. At the same time, the detection table 12 is equipped with a limiting boss 13. The limiting boss 13 is used to push and limit the movement, ensuring that the placement frame 3 is pushed into place on the detection table 12, which is more conducive to subsequent detection operations. After the placement frame 3 and DC motor 1 are pushed to the detection table 12, the mounting base 2 is left on the conveyor table 9. The conveyor table 9 conveys the mounting base 2 in reverse to the tooling table 36 through reverse conveying, which facilitates the tooling placement of the next set of DC motors 1. This allows the tooling placement of the next set of DC motors 1 and the detection process of the previous set of DC motors 1 to be carried out simultaneously, effectively improving the actual detection efficiency.

[0058] The adjustment steps for the pusher assembly 11 are as follows:

[0059] 1. The jacking assembly 11 includes a jacking cylinder 28, a jacking plate 29 and a guide plate 30. The jacking cylinder 28 is fixed on the guide plate 30, and the piston rod end of the jacking cylinder 28 is fixedly connected to the jacking plate 29.

[0060] 2. The piston rod of the push cylinder 28 extends, pushing the push plate 29 towards the placement frame 3 and gradually contacting the placement frame 3, pushing the placement frame 3 to move synchronously towards the testing table 12 until the placement frame 3 contacts the limiting boss 13 on the testing table 12, at which point the push cylinder 28 is closed; and during the testing process of the DC motor 1, the push plate 29 is always limited to contacting the rear side of the placement frame 3, cooperating with the limiting boss 13 to limit the front and rear displacement of the placement frame 3, ensuring the placement stability of the placement frame 3 on the testing table 12;

[0061] 3. At the same time, an extension rod 31 is provided on the push plate 29 and a guide groove 32 is provided on the guide plate 30. The extension rod 31 is slidably engaged in the guide groove 32. During the movement of the push plate 29, the extension rod 31 slides synchronously along the guide groove 32. The top end of the extension rod 31 is provided with a bent section 33, which is always limited and supported on the guide plate 30.

[0062] The extension of the piston rod of the jacking cylinder 28 enables the movement of the jacking plate 29, thereby realizing the jacking operation of the placement frame 3. The jacking cylinder 28 is preferably a multi-section cylinder to ensure the jacking stroke. During the movement of the jacking plate 29, the guide plate 30 is always guided and restricted by the guide groove 32, which effectively improves the stability and reliability of the jacking assembly 11 during the jacking process. At the same time, the bent section 33 at the top of the guide plate 30 is always attached to and restricted on the guide plate 30. Through the suspension support of the bent section, the jacking plate 29 is less prone to deformation, improving the overall structural stability and reliability of the jacking plate 29. The entire jacking operation is designed to be automated, making it simpler and more convenient to use.

[0063] Step 4: Adjust the lower pressure plate 14 so that it moves down and presses against the top of the DC motor 1; after the placement frame 3 drives the DC motor 1 to be placed and positioned on the test table 12, the lower pressure plate 14 presses and limits the DC motor 1 from above, so that the DC motor 1 and the placement frame 3 are stably placed on the test table 12, which is more convenient for subsequent testing and avoids the placement frame 3 and the DC motor 1 from shifting during the testing process, which would affect the actual testing effect;

[0064] The adjustment steps for the lower pressure plate 14 are as follows:

[0065] 1. A support plate 34 is provided above the guide plate 30. A pressing drive component is provided on the support plate 34. The pressing drive component includes a pressing motor 35, a pressing screw 37, and a pressing screw 38. The output end of the pressing motor 35 is connected to a pressing pulley 39. The pressing screws 37 and 38 are vertically symmetrically arranged on both sides of the testing table 12. The bottom ends of the pressing screws 37 and 38 are rotatably connected to the testing table 12 through bearings 48. The bearings 48 enable the pressing screws to rotate with the testing table 12. The rotational connection between the two platforms 12 will not affect the rotational adjustment of the two lowering screws driven by the lowering motor 35. The top of the lowering screw 1 37 is connected to the lowering pulley 2 40 and the lowering pulley 3 41. The top of the lowering screw 2 38 is connected to the lowering pulley 42. The lowering pulley 1 39 and the lowering pulley 2 40, and the lowering pulley 3 41 and the lowering pulley 42 are all tensioned and connected by belts 43. The lowering plate 14 is threaded between the lowering screw 1 37 and the lowering screw 2 38.

[0066] 2. When the pressure motor 35 starts, it drives the pressure screw 37 and the pressure screw 38 to rotate synchronously through the pressure pulley 39, pressure pulley 40, pressure pulley 41, pressure pulley 42 and belt 43. When the pressure screw 37 and the pressure screw 38 rotate synchronously, the pressure plate 14 moves vertically along the pressure screw 37 and the pressure screw 38 until the pressure plate 14 moves down and presses against the DC motor 1.

[0067] 3. At the same time, guide posts 44 are also provided between the support plate 34 and the testing table 12. The guide posts 44 are symmetrically arranged on both sides of the testing table 12. The lower pressure plate 14 passes through the two guide posts 44. When the lower pressure plate 14 moves vertically, it will slide synchronously along the guide posts 44.

[0068] The structure is compact and reasonable. The downward driving component enables the vertical movement of the lower pressure plate 14, thereby achieving the pressing and fixing of the DC motor 1 by the lower pressure plate 14 or the upward movement and reset of the lower pressure plate 14. The lower pressure plate 14 presses the DC motor 1 from above, and together with the push plate 29 and the limiting boss 13 restricting the front and rear sides of the placement frame 3, it effectively ensures the stable placement of the placement frame 3 and the DC motor 1 on the testing table 12, avoiding the movement or displacement of the placement frame 3 and the DC motor 1 during the testing process, which would affect the subsequent testing results. The lowering motor 35 provides the power source, and the lowering screw 37 and the lowering screw 38 are rotated synchronously through the lowering pulley and belt 43. This causes the lowering plate 14, whose threads are inserted between the two lowering screws, to move up or down. The design is reasonable, and the adjustment is convenient and automated, eliminating the need for manual adjustment and improving efficiency. At the same time, the lowering plate 14 is always guided and limited by the guide post 44 during vertical movement, which further improves the verticality and stability of the lowering plate 14 during vertical movement, and improves the safety and reliability of operation.

[0069] Step 5: Adjust the detection plate 15. A base support plate 16 is set under the detection platform 12. The detection plate 15 moves horizontally along the base support plate 16 until it abuts against the front end face of the DC motor 1's body 7. At least two auxiliary detection frames 17 are set on the detection plate 15, and the auxiliary detection frames 17 are matched one-to-one with the placement cavity 6. Adjust the auxiliary detection frames 17 on the detection plate 15 in sequence so that the shaft end plate 18 on the auxiliary detection frame 17 abuts against the end face of the motor shaft 8 of the corresponding DC motor 1. The base support plate 16 is set with scale lines 19. Read the corresponding scale position 'a' on the scale line 19 of the plane on the detection plate 15 that is attached to the body 7, and read the corresponding scale position 'b' on the scale line 19 of the plane on the shaft end plate 18 that is attached to the end face of the motor shaft 8. Then calculate the distance length between 'a' and 'b' to measure the corresponding DC motor 1's body 7. The shaft extension length of the DC motor 1; the number of auxiliary detection frames 17 corresponds to the number of placement cavities 6, so that each DC motor 1 in each placement cavity 6 corresponds to an auxiliary detection frame 17. By using a detection plate 15 in conjunction with several auxiliary detection frames 17, the shaft extension length of multiple DC motors 1 can be detected, effectively improving the detection effect. The detection plate 15 abuts against the extension end face of the body 7 of multiple DC motors 1, and then the several auxiliary detection frames 17 are adjusted in sequence so that the shaft end plate 18 on each auxiliary detection frame 17 abuts against the shaft end face of the motor shaft 8 of the corresponding DC motor 1. Each shaft end plate 18 corresponds to a position b on the scale line 19, and in conjunction with the detection plate 15 corresponding to position a on the scale line 19, the distance length between a and b is calculated, and then the shaft extension length of the corresponding DC motor 1 is calculated.

[0070] The adjustment steps for the detection plate 15 are as follows:

[0071] 1. A detection drive component is provided on the base plate 16. The detection drive component includes a detection motor 45, a first detection screw 46, and a second detection screw 47. The first detection screw 46 and the second detection screw 47 are symmetrically arranged on both sides of the detection table 12. The first detection screw 46 and the second detection screw 47 are rotatably connected to the detection table 12 through a bearing 48. The bearing 48 realizes the connection between the detection screw and the detection table 12 without affecting the subsequent rotation adjustment of the detection screw. The output end of the detection motor 45 is connected to a first detection pulley 49. The first detection screw 46 is connected to a second detection pulley 50 and a third detection pulley 51. The second detection screw 47 is connected to a fourth detection pulley 52. ​​A belt 43 is tensioned between the first detection pulley 49 and the second detection pulley 50, and between the third detection pulley 51 and the fourth detection pulley 52. ​​The detection plate 15 is threaded through and arranged between the first detection screw 46 and the second detection screw 47.

[0072] 2. The detection motor 45 starts, and through the detection pulley 1 49, detection pulley 2 50, detection pulley 3 51, detection pulley 4 52 and belt 43, it drives the detection screw 1 46 and detection screw 2 47 to rotate synchronously. When the detection screw 1 46 and detection screw 2 47 rotate synchronously, the detection plate 15 moves horizontally along the detection screw 1 46 until the detection plate 15 abuts against the front end face of the DC motor 1 body 7.

[0073] The detection motor 45 provides the power source, driving the synchronous rotation of detection screw 46 and detection screw 47 via the detection pulley and belt 43. This causes the detection plate 15, with its threads passing between the two detection screws, to move horizontally along the base support plate 16. The design is ingenious and reasonable, and the operation is convenient and automated. When the detection plate 15 abuts against the front end face of the DC motor 1 body 7, an index head 61 is provided on the side of the detection plate 15. A corresponding scale line 19 is provided on the base support plate 16 at the index head 61. Thus, the current position of the detection plate 15 can be read in time through the index head 61 and the corresponding scale line 19, which is convenient for subsequent calculation of the shaft extension length of the DC motor 1.

[0074] The adjustment steps for the auxiliary detection frame 17 are as follows:

[0075] 1. The auxiliary testing frame 17 includes a shaft end plate 18, an adjusting rod 53, and an adjusting screw 54. The adjusting rod 53 is fixedly connected to the testing plate 15. The shaft end plate 18 is slidably engaged on the horizontal section of the adjusting rod 53. The adjusting screw 54 is threaded through the vertical section of the adjusting rod 53. One end of the adjusting screw 54 is rotatably connected to the shaft end plate 18 through a bearing 48. The bearing 48 connection realizes the rotatable connection between the adjusting screw 54 and the shaft end plate 18, so that the horizontal movement adjustment of the shaft end plate 18 can be realized by rotating the adjusting screw 54.

[0076] 2. Rotate the adjusting screw 54. The adjusting screw 54 pushes the shaft end plate 18 to slide along the adjusting rod 53 until the shaft end plate 18 moves and abuts against the end face of the motor shaft 8 of the corresponding DC motor 1.

[0077] 3. A vertical rod 55 is provided at the bottom of the shaft end plate 18. A measuring end 56 is provided at the bottom end of the vertical rod 55. The measuring end 56 is in contact with the bottom support plate 16, and a corresponding scale line 19 is provided at the bottom support plate 16 below the measuring end 56.

[0078] The structure is cleverly and reasonably designed. By rotating the adjusting screw 54, the shaft end plate 18 can be pushed to slide horizontally along the adjusting rod 53, making it convenient and simple to use. At the same time, a vertical rod 55 is set on the shaft end plate 18, and a measuring end 56 is set at the end of the vertical rod 55. Through the measuring end 56 and the corresponding scale line 19 below it, the current position of the shaft end plate 18 can be accurately read. The index head 61 and the measuring end 56 are both set with scale lines 19 at the position corresponding to the bottom support plate 16. Multiple scale lines 19 are horizontal and the zero scale line 19 corresponds to each other, which effectively ensures the accuracy of the final reading value and also makes it easier to read and convert the value.

[0079] Step Six: Adjust the detection plate 15 to move and reset it. The reset steps for the detection plate 15 are as follows: The detection motor 45 starts, and through detection pulley 1 49, detection pulley 2 50, detection pulley 3 51, detection pulley 4 52 and belt 43, the detection screw 1 46 and detection screw 2 47 rotate synchronously, causing the detection plate 15 to move and reset away from the detection table 12. The entire reset process is automated. Moving and resetting the detection plate 15 facilitates the subsequent output operation of the placement rack 3 and DC motor 1, and also facilitates the detection operation of the next set of DC motors 1. Detection plate 15 reset. Then, simultaneously adjust the auxiliary inspection frame 17 and reset the shaft end plate 18 to avoid affecting the inspection of the next group; then, support the auxiliary table 21 on the side of the inspection table 12. Supporting folding rods 20 are set at both ends of the side of the inspection table 12. Place the auxiliary table 21 between the two supporting folding rods 20, with the top surface of the auxiliary table 21 flush with the top surface of the limiting boss 13. Adjust the lower pressure plate 14 to move it upward and reset it. The reset steps of the lower pressure plate 14 are as follows: the lower pressure motor 35 is started, and the lower pressure pulley 19, lower pressure pulley 20, lower pressure pulley 31, lower pressure pulley 42 and belt 43 drive the lower pressure pulley 19, lower pressure pulley 20, lower pressure pulley 31, lower pressure pulley 42 and belt 43 to ... The synchronous rotation of the first pressing screw 37 and the second pressing screw 38 causes the pressing plate 14 to move vertically upward along the first pressing screw 37 and the second pressing screw 38. The design is reasonable and the operation is automated. The pressing motor 35 starts, driving the two pressing screws to rotate synchronously via the pressing pulley and belt 43, moving the pressing plate 14 upward and resetting it, thus facilitating the pressing operation of the next set of DC motors 1. Adjusting the lifting mechanism 22 raises the placement frame 3 so that the bottom surface of the placement frame 3 is flush with the top surface of the limiting boss 13. Then, adjusting the pushing assembly 11 pushes the placement frame 3 onto the auxiliary platform 21. Next, the robotic arm picks up the placement frame 3 along with the tested DC motor 1 and places it onto the output platform 23. The output platform 23 then transmits the tested DC motor 1 along with the placement frame 3. The adjustment steps of the push assembly 11 are as follows: The piston rod of the push cylinder 28 continues to extend, pushing the placement frame 3 towards the auxiliary platform 21 through the push plate 29 until the placement frame 3 is in place. After the placement frame 3 is lifted into place, the push cylinder 28 continues to push the placement frame 3 through the push plate 29, so that the placement frame 3 drives the DC motor 1 to move onto the auxiliary platform 21, thus facilitating the robotic arm to pick up the placement frame 3 next.

[0080] The adjustment steps for the lifting mechanism 22 are as follows:

[0081] 1. The lifting mechanism 22 includes a lifting cylinder 57 and a lifting plate 58. The lifting cylinder 57 is fixed to the testing table 12. The piston rod end of the lifting cylinder 57 is connected to the lifting plate 58. A through slot 59 is provided on the testing table 12. The lifting plate 58 is movably engaged in the through slot 59.

[0082] 2. The lifting cylinder 57 is activated, the piston rod extends and pushes the lifting plate 58, the lifting plate 58 then pushes the placement frame 3 upward until the placement frame 3 is in place.

[0083] The structure is ingeniously and rationally designed. The piston rod of the lifting cylinder 57 extends and pushes the lifting plate 58 upward. The lifting plate 58 pushes the placement frame 3 upward, raising it to be flush with the limiting boss 13. At the same time, the top surface of the limiting boss 13 is flush with the top surface of the auxiliary platform 21. This makes it easier for the lifting assembly 11 to gradually and smoothly push the placement frame 3 onto the auxiliary platform 21, facilitating the robot arm to pick up the placement frame 3 and place it onto the output platform 23. The lifting operation is automated, convenient, and simple.

[0084] The detection plate 15 moves and resets the auxiliary detection frame 17, facilitating the subsequent push-out operation of the placement frame 3 along with the tested DC motor 1. After the detection plate 15 resets, the side space of the detection table 12 is cleared, allowing the auxiliary table 21 to be supported on the two support folding rods 20. It is ensured that both ends of the auxiliary table 21 extend from the corresponding support folding rods 20, while the vertical sections of the support folding rods 20 precisely limit the side of the auxiliary table 21, effectively ensuring the stability of the auxiliary table 21. Then, the lifting mechanism 22 lifts the placement frame 3 along with the DC motor 1, making the bottom surface of the placement frame 3 flush with the top surface of the limiting boss 13, eliminating any height difference. This makes it easier for the pusher assembly 11 to smoothly push the placement frame 3 onto the auxiliary platform 21. Then, the robot arm grabs the placement frame 3 along with the DC motor 1 and places it onto the output platform 23. The output platform 23 then transports it to the next inspection process, realizing the automatic output of the DC motor 1 after inspection. This makes the entire inspection process highly automated and effectively improves efficiency. After the DC motor 1 is inspected and output, the lifting mechanism 22 and the pusher mechanism are reset to facilitate the inspection operation of the next set of DC motors 1. The auxiliary platform 21 is then removed. Moreover, the placement frame 3 is equipped with gripping handles 60 on both sides. The reasonable design of the gripping handles 60 makes it easier for the robot arm to grip.

[0085] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A method for detecting the shaft extension dimension of a DC motor, characterized in that: Includes the following steps: Step 1: Placement of the DC motor. Place the mounting base on the tooling table, and then place the placement rack on the mounting base. The mounting base is equipped with an I-shaped slider, and the placement rack is equipped with an I-shaped groove. The I-shaped slider and the I-shaped groove match. The placement rack is slidably engaged with the I-shaped slider through the I-shaped groove. The placement rack is equipped with at least two placement cavities. Insert the DC motor into the corresponding placement cavity. The tail end of the DC motor body abuts against the closed end of the placement cavity, and the front end of the DC motor body extends out of the placement cavity. Step 2: Push the mounting base towards the conveyor table. The mounting base, along with the placement frame and DC motor, moves synchronously towards the conveyor table, which then transports the mounting base away from the tooling table until it contacts the limit baffle on the conveyor table. The DC motor then delivers the mounting base into position, and the conveyor table stops. Step 3: Adjust the jacking assembly. The jacking assembly pushes the placement frame towards the testing table. During the movement of the placement frame, it gradually disengages from the mounting base until the jacking assembly pushes the placement frame against the limit boss on the testing table, at which point the jacking assembly stops. Step 4: Adjust the lower pressure plate so that it moves down and presses against the top of the DC motor; Step 5: Adjust the test plate. A base support plate is set under the test platform. Move the test plate horizontally along the base support plate until it touches the front end face of the DC motor body. At least two auxiliary test frames are set on the test plate. The auxiliary test frames are matched one by one with the placement cavity. Adjust the auxiliary test frames on the test plate in sequence so that the shaft end plate on the auxiliary test frame touches the motor shaft end face of the corresponding DC motor. The base support plate is set with scale lines. Read the corresponding scale position 'a' of the plane on the test plate that is attached to the body on the scale line. Read the corresponding scale position 'b' of the plane on the shaft end plate that is attached to the motor shaft end on the scale line. Then calculate the distance length between 'a' and 'b'. Then measure the shaft extension length of the corresponding DC motor. Step Six: Adjust the detection plate to move and reset it. Then, place the auxiliary platform support on the side of the detection platform. Supporting folding rods are set at both ends of the side of the detection platform. Place the auxiliary platform between the two supporting folding rods, with the top surface of the auxiliary platform flush with the top surface of the limiting boss. Adjust the lower pressure plate to move it up and reset it. Adjust the lifting mechanism to lift the placement frame so that the bottom surface of the placement frame is flush with the top surface of the limiting boss. Then, adjust the pushing assembly to push the placement frame onto the auxiliary platform. Next, the robot arm grabs the placement frame and the tested DC motor together and places it on the output platform. The output platform transmits the tested DC motor and the placement frame together.

2. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step two above, a limit stop and an adjusting stop are provided on the conveyor platform. One end of the limit stop is engaged with the limit baffle and fixed with screws. One end of the adjusting stop is engaged with the limit baffle and fixed with a tightening screw. A moving groove is formed between the limit stop and the adjusting stop. The position of the adjusting stop is adjusted according to the actual width of the mounting base so that the size of the moving groove matches the mounting base. When the conveyor platform transports the moving mounting base, the mounting base always moves along the moving groove.

3. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step three above, the adjustment steps for the jacking component are as follows:

1. The jacking assembly includes a jacking cylinder, a jacking plate, and a guide plate. The jacking cylinder is fixed on the guide plate, and the piston rod end of the jacking cylinder is fixedly connected to the jacking plate.

2. The piston rod of the push cylinder extends, pushing the push plate towards the placement frame and gradually contacting the placement frame, pushing the placement frame towards the testing table in sync, until the placement frame contacts the limit boss on the testing table, at which point the push cylinder closes.

3. At the same time, an extension rod is provided on the push plate and a guide groove is provided on the guide plate. The extension rod is slidably engaged in the guide groove. During the movement of the push plate, the extension rod slides synchronously along the guide groove. The top of the extension rod is provided with a bent section, which is always limited and supported on the guide plate.

4. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step four above, the adjustment steps for the lower pressure plate are as follows:

1. A support plate is provided above the guide plate. A pressing drive component is provided on the support plate. The pressing drive component includes a pressing motor, a pressing screw 1 and a pressing screw 2. The output end of the pressing motor is connected to a pressing pulley 1. The pressing screw 1 and the pressing screw 2 are vertically symmetrically arranged on both sides of the testing table. The bottom ends of the pressing screw 1 and the pressing screw 2 are rotatably connected to the testing table through bearings. The top end of the pressing screw 1 is connected to the pressing pulley 2 and the pressing pulley 3. The top end of the pressing screw 2 is connected to the pressing pulley 4. Belts are tensioned between the pressing pulley 1 and the pressing pulley 2, and between the pressing pulley 3 and the pressing pulley 4. The pressing plate is threaded between the pressing screw 1 and the pressing screw 2.

2. When the lower motor starts, it drives the lower screw 1 and lower screw 2 to rotate synchronously through lower pulley 1, lower pulley 2, lower pulley 3, lower pulley 4 and belt. When lower screw 1 and lower screw 2 rotate synchronously, the lower plate moves vertically along lower screw 1 and lower screw 2 until the lower plate moves down and presses against the DC motor.

3. At the same time, guide columns are also set between the support plate and the testing table. The guide columns are symmetrically set on both sides of the testing table, and the lower pressure plate passes between the two guide columns. When the lower pressure plate moves vertically, it will slide synchronously along the guide columns.

5. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step five above, the adjustment steps for the detection plate are as follows:

1. A detection drive unit is provided on the bottom support plate. The detection drive unit includes a detection motor, a detection screw one, and a detection screw two. Detection screw one and detection screw two are symmetrically arranged laterally on both sides of the detection table. Detection screw one and detection screw two are rotatably connected to the detection table through bearings. The output end of the detection motor is connected to detection pulley one. Detection pulley two and detection pulley three are connected to detection screw one. Detection pulley four is connected to detection screw two. Belts are tensioned and connected between detection pulley one and detection pulley two, and between detection pulley three and detection pulley four. The detection plate is threaded through between detection screw one and detection screw two.

2. When the detection motor starts, the detection screws 1 and 2 rotate synchronously through the detection pulleys 1, 2, 3, and 4 and the belt. When the detection screws 1 and 2 rotate synchronously, the detection plate moves horizontally along the detection screws 1 and 2 until the detection plate contacts the front end face of the DC motor body.

6. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step five above, the adjustment steps for the auxiliary testing frame are as follows:

1. The auxiliary testing frame includes a shaft end plate, an adjusting rod, and an adjusting screw. The adjusting rod is fixedly connected to the testing plate. The shaft end plate is slidably engaged on the horizontal section of the adjusting rod. The adjusting screw is threaded through the vertical section of the adjusting rod. One end of the adjusting screw is rotatably connected to the shaft end plate through a bearing.

2. Rotate the adjusting screw, which pushes the shaft end plate to slide along the adjusting rod until the shaft end plate moves and contacts the end face of the corresponding DC motor shaft.

3. A vertical rod is provided at the bottom of the shaft end plate, and a measuring end is provided at the bottom end of the vertical rod. The measuring end is in contact with the bottom support plate, and a corresponding scale line is provided at the bottom support plate below the measuring end.

7. The method for detecting the shaft extension dimension of a DC motor according to claim 3, characterized in that: In step six above, the adjustment steps of the jacking assembly are as follows: the piston rod of the jacking cylinder continues to extend, pushing the placement frame towards the auxiliary platform through the jacking plate until the placement frame is in place.

8. The method for detecting the shaft extension dimension of a DC motor according to claim 4, characterized in that: In step six above, the resetting steps of the lower pressure plate are as follows: The lower pressure motor is started, and the lower pressure pulley one, lower pressure pulley two, lower pressure pulley three, lower pressure pulley four and belt drive the lower pressure screw one and lower pressure screw two to rotate synchronously, so that the lower pressure plate moves vertically upward along the lower pressure screw one and lower pressure screw two.

9. A method for detecting the shaft extension dimension of a DC motor according to claim 5, characterized in that: In step six above, the reset procedure for the detection plate is as follows: The detection motor starts, and through detection pulley one, detection pulley two, detection pulley three, detection pulley four and the belt, the detection screw one and detection screw two rotate synchronously, causing the detection plate to move away from the detection table to reset.

10. The method for detecting the shaft extension dimension of a DC motor according to claim 1, characterized in that: In step six above, the adjustment steps for the lifting mechanism are as follows:

1. The lifting mechanism includes a lifting cylinder and a lifting plate. The lifting cylinder is fixed to the testing platform. The piston rod end of the lifting cylinder is connected to the lifting plate. A through slot is provided on the testing platform, and the lifting plate is movably engaged in the through slot.

2. The lifting cylinder is activated, the piston rod extends and pushes the lifting plate, the lifting plate then pushes the placement frame upward until the placement frame is in place.

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