CN117805613B - Performance test device for servo motor - Google Patents
Performance test device for servo motor Download PDFInfo
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- CN117805613B CN117805613B CN202410197049.4A CN202410197049A CN117805613B CN 117805613 B CN117805613 B CN 117805613B CN 202410197049 A CN202410197049 A CN 202410197049A CN 117805613 B CN117805613 B CN 117805613B
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Abstract
The invention relates to the technical field of servo motor testing, in particular to a performance testing device for a servo motor, which solves the defects existing in the prior art and comprises a frame body, a positioning mechanism, a load mechanism, a linkage mechanism and a testing mechanism. Compared with the prior art, the invention not only can realize the test of the condition of the output shaft of the servo motor when the load exists, but also can realize the linkage of the positioning of the servo motor and the position adjustment of the load mechanism.
Description
Technical Field
The invention relates to the technical field of servo motor testing, in particular to a performance testing device for a servo motor.
Background
The servo motor is an engine for controlling mechanical elements to run in a servo system, is an indirect speed changing device for a supplementary motor, can control speed, has very accurate position accuracy, and can convert voltage signals into torque and rotating speed to drive a control object. The rotation speed of the rotor of the servo motor is controlled by an input signal, can react quickly, is used as an executive component in an automatic control system, has the characteristics of small electromechanical time constant, high linearity and the like, and can convert the received electric signal into angular displacement or angular speed output on the motor shaft.
The Chinese patent publication No. CN101915896B discloses a device for testing the mechanical performance parameters of a modularized permanent magnet synchronous servo motor, which is used for testing the mechanical performance parameters of the permanent magnet synchronous servo motor by changing the magnitude of an input exciting current to generate braking moments with different magnitudes to simulate different magnitude load working conditions.
The Chinese patent publication No. CN116819314A discloses a servo motor testing device with a load simulation adjusting function, which adjusts the load capacity by adjusting the insertion length of a supporting shaft in a load assembly, and then the supporting shaft drives the load assembly to rotate so as to realize the load simulation test of the servo motor.
Both of the above-mentioned prior art techniques are based only on a varying test of the load amount, and the influence of the load present at different positions on the output shaft of the servo motor is also greatly different.
Therefore, it is necessary to provide a performance testing apparatus for a servo motor to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a performance testing device for a servo motor, so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
The utility model provides a performance testing arrangement for servo motor, includes the frame body, positioning mechanism, load mechanism, link gear and test mechanism, the frame body includes base, fixed plate and mount, is connected with four sets of C type framves between base and the fixed plate, and the mount is installed on the fixed plate, and is provided with the control terminal who takes the PLC controller on the base;
The positioning mechanism comprises a positioning plate, a first connecting arm, a second connecting arm, an adjusting seat and a first synchronous wheel, wherein the positioning plate reciprocates above the fixed plate, a servo motor is clamped between the positioning plate and the fixed plate, the adjusting seat is slidably arranged on the fixed plate on two sides below the positioning plate, two first connecting arms and a second connecting arm are arranged between the adjusting seat on the same side and the side wall of the positioning plate, four connecting point positions of the two first connecting arms on the same side form a parallelogram, a first screw rod in threaded transmission fit with the first connecting arm penetrates through the inner wall of the adjusting seat, and the first synchronous wheel is connected with one end of the first screw rod;
The load mechanism comprises a weight adjusting mechanism and a position adjusting mechanism;
the weight adjusting mechanism comprises a load block, an adjusting block and a pressing plate, sliding seats are arranged on opposite side walls of two sides of the fixing frame in a sliding manner, an L-shaped frame is connected to the bottom of the sliding seats, an electric sucking disc which can be connected with the load block into a whole in an adsorption manner is arranged at the end part of the L-shaped frame, the load block is arranged on an output shaft of a servo motor, the pressing plate is elastically arranged above the load block, the adjusting block which moves relatively is arranged between the sliding seats on two sides in a threaded transmission manner, and a linkage handle is arranged between the adjusting block and the pressing plate;
The position adjusting mechanism comprises a movable seat and a synchronous wheel II, a U-shaped frame I is arranged on the side walls of the two sides of the fixed plate, an L-shaped bracket connected with the L-shaped frame is arranged on the movable seat, the movable seat slides between the U-shaped frame I and the side wall of the fixed plate, a screw rod III in threaded transmission fit with the movable seat is penetrated in the movable seat, and the synchronous wheel II is connected with one end of the screw rod III;
The linkage mechanism comprises a U-shaped frame II, a gear I, a gear II and a driving wheel, wherein the U-shaped frame II is arranged on the bottom surface of the fixed plate, the gear I is rotatably arranged in the middle of the U-shaped frame II, the gears II are arranged on the gear frame in a meshed mode on both sides of the gear I, the gear I and the gear II are arranged on the gear frame, the middle of the gear II penetrates through a fixed shaft fixed on the U-shaped frame II, the driving wheel is further arranged on one side of the gear II, the driving wheels on both sides are respectively connected with the synchronous wheel I and the synchronous wheel II through synchronous belts, and the driving wheels on both sides are driven in a staggered mode through displacement movement of the gear frame;
The testing mechanism comprises a fixed disc, a linkage shaft, a rotating handle and a top block, wherein the fixed disc is arranged at one end of the fixed plate, the linkage shaft is connected with the end part of an output shaft of the servo motor, the rotating handle is arranged at the end part of the linkage shaft and is provided with a fixed bolt at the other end, the top block is elastically arranged in the fixed disc along the vertical direction, a contact sensor is embedded on the inclined surface of the top block, and the fixed bolt moves between the inner walls of the fixed disc along the circumferential direction and is in contact with the inclined surface of the top block at intervals.
In one embodiment, two groups of grooves I are formed in the top surface of the fixed plate, two groups of grooves II are formed in the fixed frame, the grooves I and the grooves II are distributed along the length direction and the width direction of the fixed plate respectively, through holes I are formed in the fixed frame and the fixed plate, a guide rod I is inserted between the inner walls of the grooves I, a screw rod is rotatably arranged between the side walls of the fixed frame, an extending shaft I connected into a whole is arranged at one end of the screw rod I, the other end of the extending shaft I extends into the through holes I and is connected with a synchronous wheel in a key connection mode into a whole, an adjusting seat is in a convex structure, one end of the adjusting seat slides between the inner walls of the grooves I, and the guide rod is arranged in a sliding manner through the adjusting seat;
Two first connecting bolts are installed on the side walls of two sides of the positioning plate through threaded connection, two second connecting bolts are installed on the side walls of two opposite sides of the fixing frame through threaded connection, the first connecting arm is installed between the first connecting bolts and the second connecting bolts in a movable connection mode, the third connecting bolts are installed on the side wall of one side of the adjusting seat in a threaded connection mode, and the second connecting arm is installed between the third connecting bolts and one of the first connecting bolts in a movable connection mode.
In one embodiment, the positioning mechanism further comprises two clamping plates, two symmetrical protruding blocks are welded on the bottom wall of the clamping plates, the protruding blocks slide between the inner walls of the second grooves, guide rods II are inserted between the inner walls of the second grooves, the guide rods II penetrate through the protruding blocks, one sides of the protruding blocks are sleeved with springs I on the guide rods II, one ends of the springs I are fixed with the inner walls of the second grooves, and the other ends of the springs I are in contact with the side walls of the protruding blocks.
In one embodiment, a fixing rod penetrates through the L-shaped frame, the fixing rod is inserted between the side walls of the fixing frame, a limiting seat is further arranged on one side of the L-shaped frame through a screw, and the limiting seat is also arranged on the fixing rod in a sliding manner and is arranged towards one side of the position where the positioning mechanism is located;
A guide rod III is inserted between the sliding seats at the two sides, two screws II which are connected into a whole through a shaft coupler are also rotationally arranged between the side walls of the guide rod III, the screw directions of the two screws II are opposite, an adjusting block slides on the guide rod III, and the screw rod III penetrates through the adjusting block and is in screw transmission with the adjusting block;
The load block is provided with a through hole II which is matched with the output shaft of the servo motor, four limiting rods which are vertically arranged are arranged on the top surface of the load block through threaded connection, a spring II is arranged on the limiting rods, the plate slides on the limiting rods and is not separated from the limiting rods all the time, the top end of the spring II is in contact with the bottom surface of the pressing plate, circular adsorption sheets are embedded in the side walls of the two sides of the load block, the adsorption sheets are in contact with the electric sucking disc, and when the electric sucking disc is started, the adsorption sheets can be fixedly connected with the adsorption sheets, otherwise, the adsorption sheets cannot be connected into a whole;
one end of the screw rod III is provided with an extension shaft II which is connected into a whole, the extension shaft II penetrates through the U-shaped frame I, and the other end of the synchronous wheel II and the other end of the extension shaft II are connected and fixed into a whole through a key.
In one embodiment, two fixed blocks are arranged on the second U-shaped frame, a screw rod IV is rotatably arranged between the two fixed blocks, the screw rod IV rotates one circle at a time, and the screw rod IV penetrates through the gear frame and is in threaded transmission with the gear frame;
One side of the driving wheel is provided with a first fixed ring on the fixed shaft, the driving wheel is rotationally arranged on one side of the first fixed ring through a bearing with a T-shaped structure, the length of the first gear is equal to the distance between planes of two surfaces of two gears which are oppositely arranged, the first gear is rotationally arranged between the side walls of a gear frame through shaft connection, the gear frame is also provided with two vertical shafts which are vertically arranged, the top of each vertical shaft is connected with a second fixed ring, the second fixed ring is slidingly arranged on the fixed shaft, and the second gear is rotationally arranged on one side of the second fixed ring through a bearing with a T-shaped structure;
The magnetic ring is arranged on the side wall of the other side of the gear II, the driving wheel is provided with a circular groove I, the circular groove I is arranged opposite to the magnetic ring and is matched with the circular groove I, the fixing shaft is embedded with an annular magnet sheet, at least three pin holes are arranged in the driving wheel, positioning pins are arranged in the pin holes and are magnets and move along the directions of the pin holes, two ends of each positioning pin are respectively matched with the magnetic ring and the magnet sheet, and the attraction force of the magnetic ring on the positioning pins is greater than that of the magnet sheet on the positioning pins.
In one embodiment, when the screw rod IV rotates for one circle, the gear rack drives the gear I and the gear II to do linear motion along the length direction of the U-shaped rack II synchronously, only the magnetic ring on the gear II on one side is connected with the circular ring groove I on the driving wheel positioned on the same side into a whole, at the moment, because the suction force of the magnetic ring is greater than that of the magnet sheet, the positioning pin which is adsorbed and fixed with the magnet sheet originally moves to one side of the magnetic ring and is finally connected with the magnetic ring into a whole through the suction force, namely, under the condition, the rotation of the gear I, the synchronous wheel I or the synchronous wheel II is driven to output through the cooperation of the gear II and the driving wheel;
In the movement process of the locating pin, one end of the locating pin is always positioned in the driving wheel.
In one embodiment, a groove III is formed in one end of the fixing plate, mounting supports are mounted at two end corners of the groove III through bolts, the fixing plate is fixed between the mounting supports on two sides through screws, a through hole is formed in the middle of the fixing plate, and the diameter of the through hole is larger than that of the linkage shaft;
The fixed disc is provided with a second circular groove, the fixed bolt is in a cylindrical structure, one end of the fixed bolt slides between the inner walls of the second circular groove, the other end of the fixed bolt is arranged on the rotating handle through a screw, the top of the jacking block is connected with a jacking rod, and one end of the jacking rod is exposed out of the fixed disc;
a connecting flange is also fixed between the linkage shaft and the output shaft of the servo motor through a screw, and the rotating handle is fixed with the linkage shaft through a key pin in an inserting way.
Compared with the prior art, the invention has the following beneficial effects:
1. Through setting up weight adjustment mechanism and position adjustment mechanism, utilize the relative motion of two regulation seats of control for the linkage handle is downwards or upwards to the mode of clamp plate application effort increase the load weight of load piece on servo motor's output shaft, simultaneously, utilize the synchronous rotation that drives screw rod three of drive of synchronizing wheel two, make the position that removes the seat and drive regulation load mechanism through L support, thereby can realize the change regulation to load weight, can realize the change regulation to load position again, improve the comprehensiveness of test.
2. Through setting up link gear, synchronizing wheel one and synchronizing wheel two, drive the alternate work of two gears two with the displacement motion of gear frame, along with the drive wheel of gear two continuous to homonymy, the magnetic ring also moves into ring groove one gradually, in the in-process that the magnetic ring got into, the other end of locating pin also begins to receive the effect of suction gradually, and after the magnetic ring is connected with ring groove one completely, utilize the difference of the suction size of locating pin both sides to control the locating pin automatic to be moved to the magnetic ring one side that suction is big and make separating between locating pin and the fixed axle this moment, afterwards, along with the rotation drive of gear one, gear two moves and drives the drive wheel rotation in step thereupon, realize carrying out solitary drive control to synchronizing wheel one or synchronizing wheel two, and then control the location to servo motor and the position adjustment process to load mechanism respectively.
In summary, the invention not only can realize the test of the condition of the output shaft of the servo motor when the load exists, but also can realize the linkage of the positioning of the servo motor and the position adjustment of the load mechanism.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the positioning mechanism of the present invention;
FIG. 3 is a schematic view of the overall structure of the load mechanism of the present invention;
FIG. 4 is a schematic view of the weight adjustment mechanism of the present invention;
FIG. 5 is a schematic view of the overall structure of the linkage mechanism of the present invention;
FIG. 6 is a schematic diagram of the connection of the second gear with the drive wheel of the present invention;
FIG. 7 is a schematic illustration of the connection of gear one and gear two of the present invention to a carrier;
FIG. 8 is a schematic view of the overall structure of the test mechanism of the present invention;
Fig. 9 is another view structure diagram of fig. 8.
In the figure: 1. a base; 11. a control terminal; 12. a C-shaped frame; 2. a fixing plate; 21. a fixing frame; 22. a groove I; 23. a second groove; 3. a positioning mechanism; 31. a positioning plate; 32. a clamping plate; 33. a first guide rod; 34. a first screw; 35. a first connecting arm; 36. an adjusting seat; 361. a second connecting arm; 37. a first synchronous wheel; 38. a second guide rod; 4. a weight adjusting mechanism; 41. an L-shaped frame; 411. an electric suction cup; 42. a load block; 421. a limit rod; 422. an adsorption sheet; 43. a slide; 431. a second screw; 432. a guide rod III; 44. an adjusting block; 45. a pressing plate; 46. a linkage handle; 5. a position adjusting mechanism; 51. a U-shaped frame I; 52. a second synchronous wheel; 53. a screw III; 54. a movable seat; 55. an L bracket; 6. a linkage mechanism; 61. a U-shaped frame II; 62. a gear frame; 621. a screw rod IV; 63. a first gear; 64. a fixed shaft; 641. a magnet piece; 65. a second gear; 651. a magnetic ring; 66. a driving wheel; 661. a circular groove I; 67. a positioning pin; 7. a testing mechanism; 71. a fixed plate; 711. a through hole; 712. annular groove II; 72. a mounting support; 73. a linkage shaft; 74. a connecting flange; 75. a rotating handle; 751. a fixing bolt; 76. a top block; 761. a contact sensor; 762. and (5) a push rod.
Detailed Description
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
As shown in fig. 1, the present invention provides the following technical solutions: a performance testing device for a servo motor comprises a frame body, a positioning mechanism 3, a loading mechanism, a linkage mechanism 6 and a testing mechanism 7;
The frame body includes base 1, fixed plate 2 and mount 21, and base 1 is "L" type structure setting, and installs control terminal 11 on the base 1, and control terminal 11 attaches the PLC controller, and still has inlayed the power seat outward on one of them lateral wall of control terminal 11, installs four sets of C type framves 12 through the bolt between the top surface of base 1 and the bottom surface of fixed plate 2, and the bottom of mount 21 passes through the bolt fastening on the top surface of fixed plate 2.
The positioning mechanism 3 is arranged on one side above the fixed plate 2, the servo motor is fixed between the positioning mechanism 3 and the fixed plate 2, the load mechanism is arranged on an output shaft of the servo motor, the weight and the position of the load mechanism on the output shaft of the servo motor can be changed, the test mechanism 7 is arranged on the extending direction of the output shaft of the servo motor, the load capacity and the performance influence result of the load position on the servo motor are reflected by the test mechanism 7, in addition, the linkage mechanism 6 is further arranged between the positioning mechanism 3 and the load mechanism, and the driving adjustment of the positioning mechanism 3 and the load mechanism can be respectively realized through the switching adjustment of the linkage mechanism 6.
As shown in fig. 2, the positioning mechanism 3 includes a positioning plate 31, a clamping plate 32, a first connecting arm 35, a second connecting arm 361, an adjusting seat 36 and a first synchronizing wheel 37;
the top surface of the fixed plate 2 is provided with grooves I22 along the length direction, the grooves I22 are symmetrically provided with two grooves II 23 along the width direction of the fixed plate 2, the grooves II 23 are also provided with two grooves, and the fixed frame 21 and the fixed plate 2 are also provided with through holes I.
The guide rod I33 is inserted between the inner walls of the two ends of the groove I22, the screw rod I34 is further rotatably arranged between the side walls of the fixing frame 21, an integrally connected extending shaft I is welded at one end of the screw rod I34 and penetrates through the fixing frame 21 and extends into the through hole I, the screw rod I34 is positioned right above the guide rod I33, the adjusting seat 36 is arranged in a convex structure, one end of the adjusting seat 36 slides between the inner walls of the groove I22, the guide rod I33 penetrates through the adjusting seat 36 and is slidably arranged with the adjusting seat, the screw rod I34 penetrates through the adjusting seat 36 and is in threaded transmission with the adjusting seat 36, two connecting bolts I are connected to the side walls of the two sides of the positioning plate 31 through threads, two connecting bolts II are connected to the opposite side walls of the two sides of the fixing frame 21 through threads, a connecting arm I35 is movably connected between the connecting bolts I and the connecting bolts II in a rotating manner, a connecting bolt III is connected to the side wall of one side of the adjusting seat 36 through threads, a connecting arm II is movably arranged between the connecting bolt III and one connecting bolt I in a rotating manner, two connecting wheels I are mounted on the through hole I and two connecting wheels 37 are mounted on two sides of the two synchronous shafts respectively, and two synchronous shafts are mounted on two side shafts 37 respectively.
The guide rod II 38 is inserted between the inner walls of the two ends of the groove II 23, the guide rod II 38 is sleeved with the two sections of the first springs, one ends of the two sections of the first springs are welded on the inner walls of the two ends of the groove II 23 respectively, the clamping plate 32 slides on the fixing frame 21, two protruding blocks are welded on the bottom wall of the clamping plate 32 and slide between the inner walls of the groove II 23, the guide rod II 38 penetrates through the protruding blocks and is arranged in a sliding mode, and the other ends of the first springs are in contact with one side wall of the protruding blocks.
It should be further noted that, first, the clamping plates 32 on two sides are manually moved to two sides respectively, then the servo motor to be measured is placed on the fixed plate 2, then, the moved clamping plates 32 are released to move to two sides of the servo motor to clamp the servo motor under the action of the first spring, then, the first screw rod 34 is driven to rotate by the first synchronizing wheel 37, so that the adjusting seat 36 moves linearly under the guiding action of the first guide rod 33 along with the driving of the first screw rod 34, when the adjusting seat 36 moves and adjusts, the adjusting seat synchronously drives the second connecting arm 361 to move and adjust, so that the positioning plate 31 moves along with the adjusting seat, meanwhile, the first connecting arm 35 also moves along with the adjusting seat to match with the movement of the positioning plate 31, and the adjusting seat 36 stops when being pressed down to contact with the top surface of the servo motor.
As shown in fig. 3 to 4, the load mechanism includes a weight adjustment mechanism 4 and a position adjustment mechanism 5;
the weight adjusting mechanism 4 includes an L-shaped frame 41, a load block 42, a slider 43, an adjusting block 44, and a pressing plate 45;
Two symmetrically arranged fixing rods are inserted between the side walls of the fixing frame 21, the fixing rods on the two sides are respectively provided with an L-shaped frame 41 in a sliding mode, one end of each L-shaped frame 41 is provided with an electric sucking disc 411, the fixing frame 21 is provided with two symmetrically arranged sliding seats 43 in a sliding mode along the length direction of the fixing frame 21, the other ends of the L-shaped frames 41 are fixedly connected with the bottom surfaces of the sliding seats 43, one side of each L-shaped frame 41 is further provided with a limiting seat through screws, the limiting seats slide on the fixing rods, guide rods III 432 are fixedly inserted between the sliding seats 43 on the two sides, two screw rods II 431 are further arranged in a rotating mode between the sliding seats 43 on the two sides in a rotating mode, the screw directions of the screw rods II are opposite, the screw rods II 431 are connected into a whole through a coupling, one end of one screw rod II is connected and driven through screws, the outer walls of the guide rods III 432 are provided with two opposite adjusting blocks 44 in a sliding mode, and the two screw rods III 53 penetrate through the adjusting blocks 44 on the two sides respectively and are respectively arranged through screw threads in a transmission mode.
The load piece 42 sets up on servo motor's output shaft, set up the through-hole second that runs through the setting on the load piece 42, servo motor's output shaft and two looks adaptations of through-hole, install four gag lever posts 421 through threaded connection on the top surface of load piece 42, the cover is equipped with spring second on the gag lever post 421, and all inlayed circular shape adsorption piece 422 on the opposite lateral wall surface of both sides of load piece 42, adsorption piece 422 and electric sucking disc 411 looks adaptation and relative setting, and electric sucking disc 411 and adsorption piece 422 contact each other and set up, can realize the connection or the separation with adsorption piece 422 through electric sucking disc 411's start-up or not.
The clamp plate 45 slides and sets up on four gag lever posts 421 and does not break away from gag lever post 421 all the time, and the bottom surface of clamp plate 45 and the top contact setting of spring two have welded two connecting seat one on the top surface of clamp plate 45, and the welding has connecting seat two on the bottom surface of regulating block 44, is provided with the linkage handle 46 through the axle connection activity between connecting seat one and the connecting seat two that are located the homonymy.
It should be further noted that, the movement adjustment of the adjusting block 44 is controlled in a threaded driving manner, when the adjusting blocks 44 on two sides move to one side of the position of the coupling, the linkage handle 46 is driven to push the pressing plate 45 downward, so that the pressing plate 45 cooperates with the second spring to gradually increase the acting force acting on the load block 42, thereby realizing the function of changing the load capacity.
When the position of the loading mechanism is adjusted, the electric sucking disc 411 is started by the PLC controller to be adsorbed and fixed with the adsorption piece 422, so that the whole weight adjusting mechanism 4 can be driven by the L-shaped frame 41 to synchronously move and adjust along with the position adjusting mechanism 5, and after the position adjustment is finished, the electric sucking disc 411 can be closed, so that the weight adjusting mechanism 4 and the position adjusting mechanism 5 can be separated.
The position adjusting mechanism 5 comprises a first U-shaped frame 51, a second synchronous wheel 52, a movable seat 54 and an L-shaped bracket 55;
The U-shaped frame I51 is installed on the side walls of the two sides of the fixed plate 2 through bolts, the screw rod III 53 is rotatably arranged between the inner walls of the two ends of the U-shaped frame I51, an extending shaft II which is integrally connected is welded on one end of the screw rod III 53, the extending shaft II penetrates through the U-shaped frame I51, the synchronous wheel II 52 is installed on the other end of the extending shaft II through key connection, the movable seat 54 is slidably arranged between the U-shaped frame I51 and the fixed plate 2, the screw rod III 53 penetrates through the movable seat 54 and is in threaded connection with the movable seat 54, the L-shaped bracket 55 is welded on the top surface of the movable seat 54, and the other end of the L-shaped bracket 55 is integrally fixed with the side wall of the L-shaped frame 41 through plug-in connection.
It should be further noted that, when the position of the load mechanism is adjusted, the electric suction cup 411 is started by the PLC controller to be connected with the suction sheet 422 into a whole, and then the screw rod three 53 is driven to rotate by the transmission action of the synchronizing wheel two 52, so that the movement adjustment of the moving seat 54 is controlled in a screw driving manner, and the L bracket 55 moves synchronously with the moving seat 54 and drives the L-shaped frame 41 to perform movement adjustment, so as to further realize the position adjustment of the weight adjusting mechanism 4.
As shown in fig. 5-7, a linkage mechanism 6 is arranged between the synchronous wheel one 37 and the synchronous wheel two 52 on the same side, and the linkage mechanism 6 comprises a U-shaped frame two 61, a gear frame 62, a gear one 63, a gear two 65 and a driving wheel 66;
Two groups of U-shaped frames II 61 are fixedly arranged on the bottom surface of the fixed plate 2 through bolts, two fixed blocks are arranged on the U-shaped frames II 61 through screws, a screw rod IV 621 is rotatably arranged between the two fixed blocks, a rotating motor II is arranged on the side wall of one fixed block through screws, the rotating motor II rotates for one circle each time, the screw rod IV 621 penetrates through the gear frame 62 and is in threaded transmission with the gear frame 62, two fixed shafts 64 are inserted between the side walls of the two sides of the U-shaped frames II 61, a driving wheel 66 and a gear II 65 are respectively arranged on the fixed shafts 64 on the two sides, a fixed ring I is arranged on the side wall of one side of the driving wheel 66, the driving wheel 66 is not separated from the fixed ring I, the fixed ring I is fixed on the fixed shaft 64 through screws, the driving wheel 66 is rotatably arranged on one side of the fixed ring I through a bearing of a T-shaped structure, the position of the driving wheel 66 on the fixed shaft 64 is kept unchanged, the gear II 65 on two sides is meshed with the gear I63, the length of the gear I63 is equal to the distance between planes of two surfaces of the two gears II 65 which are oppositely arranged, the gear I63 is rotationally arranged between the side walls of the gear frame 62 through shaft connection, a rotating motor III is arranged on one side wall of the gear frame 62 through screws, a rotating shaft is connected to the output end of the rotating motor III through a key, the rotating shaft penetrates through the gear I63 and is connected with the rotating motor I as a whole, the rotating shaft is rotationally arranged between the side walls of the gear frame 62, two vertical shafts which are vertically arranged are inserted in the gear frame 62, a fixing ring II is inserted at the top of the vertical shaft, the fixing ring II is slidingly arranged on the fixing shaft 64, the gear II is rotationally arranged on one side of the fixing ring II through a bearing II of a T-shaped structure, the gear II 65 is not separated from the fixing ring II, and two driving wheels 66 are respectively connected with the synchronizing wheel I37 through a synchronous belt, the second synchronizing wheel 52 is connected with the first synchronizing wheel.
A magnetic ring 651 is mounted on the surface of the other side wall of the gear II 65 through a screw, a circular ring groove 661 is formed on one side, facing the gear II 65, of the driving wheel 66, the magnetic ring 651 is matched with the circular ring groove 661, a circular magnet piece 641 is embedded on the fixing shaft 64, at least three pin holes are formed in the driving wheel 66, positioning pins 67 are arranged in the pin holes, the positioning pins 67 are magnets and move in the direction of the pin holes, and two ends of the positioning pins 67 are respectively matched with an inner ring of the magnetic ring 651 and an outer ring of the magnet piece 641 in a fitting mode, wherein the attraction force of the magnetic ring 651 is larger than that of the magnet piece 641.
It should be further noted that, the second rotating motor is started by the PLC controller, the second rotating motor drives the screw rod four 621 to rotate, so as to control the movement of the gear frame 62, each time the second rotating motor rotates, the gear frame 62 drives the first gear 63 and the second gear 65 to synchronously move for a certain distance and then stop, and the second gear 65 located in the moving direction is connected with the driving wheel 66 on the side, at this time, the magnetic ring 651 on the second gear 65 moves into the circular groove one 661, so that the positioning pin 67 originally attracted by the magnetic plate 641 is attracted to the magnetic ring 651, so that the positioning pin 67 is separated from the fixed shaft 64, at this time, the second gear 65 and the driving wheel 66 are connected into a whole, then, under the rotation of the first gear 63, the second gear 65 and the driving wheel 66 connected with the first gear 65 are driven by the action of the synchronous belt, otherwise, the gear frame 62 moves to one side, and the second gear 65 on the other side far from the driving wheel 66 moves out of the circular groove one 661, at this time, the positioning pin 67 and the positioning pin 641 is only adsorbed on the fixed shaft 64, so that the positioning pin 67 is not attracted to the fixed shaft 64, and is kept on the fixed position of the fixed shaft because of the positioning pin 641.
As shown in fig. 8 to 9, the test mechanism 7 includes a fixed plate 71, a mounting bracket 72, a linkage shaft 73, a connecting flange 74, a swivel handle 75, and a top block 76;
The groove III is formed in one end of the fixing plate 2, the mounting support 72 is mounted at two end corners of the groove III through bolts, the fixing plate 71 is mounted between the mounting supports 72 on two sides through screws, a through hole 711 is formed in the middle of the fixing plate 71, a circular groove II 712 is further formed in the fixing plate 71, a top block 76 is arranged at the vertical upward position of the circular groove II 712, one side of the bottom end of the top block 76 is inclined and is embedded with a contact sensor 761, the contact sensor 761 is connected with the PLC through an electric signal, a top rod 762 is welded to the top of the top block 76, a spring III (not shown in the drawing) is sleeved outside the top rod 762, a cavity (not shown in the drawing) is formed in the fixing plate 71, the top block 76 is slidably arranged between the inner walls of the cavity, and two ends of the spring III are respectively in contact with the top surface of the cavity and the top surface of the top block 76, so that elastic movement of the top block 76 is controlled.
One end of the connecting flange 74 is connected with the end part of the output shaft of the servo motor, the other end of the connecting flange is provided with the linkage shaft 73, the other end of the linkage shaft 73 penetrates through the through hole 711, one end of the rotating handle 75 is provided with a key pin through a screw, the key pin is inserted into the end part of the linkage shaft 73 and is fixed with the end part of the linkage shaft into a whole, the other end of the rotating handle 75 is provided with a fixing bolt 751 with a columnar structure through a screw, and the fixing bolt 751 is arranged in a sliding mode along the inner wall of the second circular ring groove 712.
It should be further noted that, the length of the output shaft of the servo motor is extended by the connecting flange 74 and the linkage shaft 73, and the output shaft of the servo motor can be connected with the testing mechanism 7, during the continuous working process of the output shaft of the servo motor, the linkage shaft 73 rotates synchronously and drives the rotating handle 75 to do circular motion together, the fixing bolt 751 at this time also moves synchronously along the inner wall of the circular groove two 712, when the fixing bolt passes through the position of the top block 76, the fixing bolt contacts and triggers the contact sensor 761, and pushes the fixing bolt upwards, after the fixing bolt 751 leaves the top block 76, the top block 76 is reset under the action of the spring three, so that the reciprocating cycle is performed, the time of triggering the contact sensor 761 for two adjacent times is recorded from the beginning of the starting of the servo motor, and the working performance of the servo motor when the load exists on the output shaft of the servo motor is detected by controlling the factors such as the weight and the position of the load.
Working principle:
Firstly, manually removing clamping plates 32 on two sides, placing a servo motor to be tested at the middle position of the two clamping plates 32, resetting the clamping plates 32 on two sides of the servo motor and limiting the servo motor, enabling an output shaft of the servo motor to pass through a load block 42, installing a linkage shaft 73 on the end part of the output shaft of the servo motor through a connecting flange 74, and assembling a testing mechanism 7 as shown in fig. 1;
Then, the gear frame 62 is controlled by the PLC controller to move to the right side shown in fig. 5 (namely, the screw rod four 621 rotates forwards for 1 circle and stops), so that the synchronous wheel one 37 is connected and driven with the linkage mechanism 6 at the moment, then, the PLC controller is used for controlling the rotation of the gear one 63, so that the positioning plate 31 moves downwards and presses the top surface of the servo motor to fix the positioning plate, then, the PLC controller is used for controlling the gear frame 62 to move to the other side (namely, the screw rod four 621 rotates reversely for 1 circle and stops), so that the synchronous wheel one 37 is separated from the linkage mechanism 6, the synchronous wheel two 52 is connected with the linkage mechanism 6, and meanwhile, the positioning pin 67 in the driving wheel 66 on the side where the synchronous wheel one 37 is located moves to the magnet piece 641 on the fixed shaft 64 automatically along with the moving out of the magnetic ring 651, so that the synchronous wheel one 37 can be kept in a stable state when the linkage mechanism 6 is connected and driven with the synchronous wheel two 52;
Then, the rotation output of the second synchronizing wheel 52 is controlled by the PLC controller, so that the third screw 53 rotates synchronously, the displacement movement of the movable seat 54 and the L bracket 55 is controlled, the L bracket 55 drives the position of the load adjusting mechanism on the output shaft of the servo motor, so that different test position requirements are changed, after the position is adjusted to a certain position, the PLC controller controls the movement of the two adjusting blocks 44, the two adjusting blocks are matched with the linkage handles 46 on two sides to drive the pressing plate 45 downwards or upwards, when the pressing plate 45 moves downwards, the weight of the load block 42 can be increased, otherwise, the weight is reduced, and the position of the adjusting blocks 44 is controlled to change different test weight requirements;
After the environment to be tested (i.e. the load position and the load weight) is adjusted, the servo motor is started to enable the output shaft of the servo motor to start rotating, the linkage shaft 73 synchronously rotates along with the output shaft of the servo motor through the connecting flange 74 to drive the rotating handle 75 to rotate, the fixing bolt 751 synchronously moves along the second circular groove 712 continuously, the contact sensor 761 is triggered while contacting with the inclined plane of the fixing bolt whenever the fixing bolt passes through the position of the top block 76, when the contact sensor 761 is triggered, the PLC controller counts time, and finally, the influence of the load weight and the load position on the work of the servo motor is judged according to the time interval change of the trigger of the contact sensor 761 in a period of work of the servo motor.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; may be directly connected, may be in communication with the interior of two elements or may be in interaction with two elements. The meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The above describes in detail a performance testing device for a servo motor provided by the embodiment of the present application, and specific examples are applied to illustrate the principle and implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (7)
1. A performance testing apparatus for a servo motor, comprising:
The frame body comprises a base (1), a fixed plate (2) and a fixed frame (21), four groups of C-shaped frames (12) are connected between the base (1) and the fixed plate (2), the fixed frame (21) is arranged on the fixed plate (2), and a control terminal (11) with a PLC controller is arranged on the base (1);
The positioning mechanism (3), positioning mechanism (3) include locating plate (31), link arm one (35), link arm two (361), regulating seat (36) and synchronous wheel one (37), locating plate (31) reciprocating motion is in the top of fixed plate (2), and centre gripping has servo motor between locating plate (31) and fixed plate (2), both sides below locating plate (31) are provided with on fixed plate (2) the slip regulating seat (36), be provided with two link arms one (35) and a link arm two (361) between the lateral wall of regulating seat (36) and locating plate (31) of homonymy, wherein four tie point positions of two link arms one (35) of homonymy are formed the parallelogram, run through with screw one (34) of its screw drive cooperation between the inner wall of regulating seat (36), synchronous wheel one (37) are connected with one of them one end of screw one (34);
a load mechanism comprising a weight adjustment mechanism (4) and a position adjustment mechanism (5);
The weight adjusting mechanism (4) comprises a load block (42), an adjusting block (44) and a pressing plate (45), sliding seats (43) are slidably arranged on opposite side walls of two sides of the fixing frame (21), an L-shaped frame (41) is connected to the bottom of each sliding seat (43), an electric sucking disc (411) which can be connected with the load block (42) in an adsorption mode is arranged at the end part of each L-shaped frame (41), the load block (42) is arranged on an output shaft of a servo motor, the pressing plate (45) is elastically arranged above the load block (42), the adjusting block (44) which moves relatively is arranged between the sliding seats (43) on two sides in a threaded transmission mode, and a linkage handle (46) is arranged between the adjusting block (44) and the pressing plate (45);
The position adjusting mechanism (5) comprises a movable seat (54) and a synchronous wheel II (52), wherein a U-shaped first bracket (51) is arranged on the side walls of the two sides of the fixed plate (2), an L-shaped bracket (55) connected with the L-shaped bracket (41) is arranged on the movable seat (54), the movable seat (54) slides between the U-shaped first bracket (51) and the side wall of the fixed plate (2), a screw rod III (53) in threaded transmission fit with the movable seat (54) is penetrated in the movable seat, and the synchronous wheel II (52) is connected with one end of the screw rod III (53);
The linkage mechanism (6), the linkage mechanism (6) includes U-shaped frame two (61), gear one (63), gear two (65) and drive wheel (66), U-shaped frame two (61) is installed on the bottom surface of fixed plate (2), the middle position of U-shaped frame two (61) rotates and is provided with gear one (63), both sides of gear one (63) are all meshed and are provided with gear two (65), gear one (63) and gear two (65) are all installed on gear frame (62), and the centre of gear two (65) is run through and is fixed on fixed axle (64) on U-shaped frame two (61), and one side of gear two (65) still is provided with drive wheel (66), wherein drive wheel (66) of one side are connected with synchronous wheel one (37) through the hold-in range, drive wheel (66) of the opposite side are connected with synchronous wheel two (52) through the hold-in range, wherein, drive wheel (66) of both sides are crossed and are driven through the displacement motion of gear frame (62);
The testing mechanism (7), testing mechanism (7) include fixed disk (71), universal driving shaft (73), rotating handle (75) and kicking block (76), fixed disk (71) are installed on the one end of fixed plate (2), universal driving shaft (73) are connected with servo motor's output shaft end, rotating handle (75) are installed on the tip of universal driving shaft (73) and are provided with gim peg (751) on its other end, be provided with kicking block (76) along vertical direction elasticity in fixed disk (71), contact sensor (761) are inlayed on the inclined plane of kicking block (76), gim peg (751) are along the circumferencial direction motion between the inner wall of fixed disk (71) and with the inclined plane contact of kicking block (76) at intervals.
2. The performance testing device for a servo motor according to claim 1, wherein two groups of grooves I (22) are formed in the top surface of the fixed plate (2), two groups of grooves II (23) are formed in the fixed frame (21), the grooves I (22) are distributed along the length direction of the fixed plate (2), the grooves II (23) are distributed along the width direction of the fixed plate (2), through holes I are formed in the fixed frame (21) and the fixed plate (2), a guide rod I (33) is inserted between the inner walls of the grooves I (22), a screw rod I (34) is rotatably arranged between the side walls of the fixed frame (21), an extending shaft I connected into a whole is arranged at one end of the screw rod I (34), the other end of the extending shaft I extends into the through holes I and is connected with a synchronous wheel I (37) into a whole in a key connection mode, an adjusting seat (36) is arranged in a convex structure, one end of the adjusting seat (36) slides between the inner walls of the grooves I (22), and the guide rod I (33) penetrates through the adjusting seat (36) and slides with the adjusting seat.
Two first connecting bolts are arranged on side walls on two sides of the positioning plate (31) through threaded connection, two second connecting bolts are arranged on opposite side walls on two sides of the fixing frame (21) through threaded connection, a first connecting arm (35) is arranged between the first connecting bolts and the second connecting bolts in a movable connection mode, a third connecting bolt is arranged on one side wall of the adjusting seat (36) in a threaded connection mode, and a second connecting arm (361) is arranged between the third connecting bolt and one of the first connecting bolts in a movable connection mode.
3. The performance testing device for a servo motor according to claim 2, wherein the positioning mechanism (3) further comprises two clamping plates (32), two symmetrical protruding blocks are welded on the bottom wall of the clamping plates (32), the protruding blocks slide between the inner walls of the second grooves (23), a second guide rod (38) is inserted between the inner walls of the second grooves (23), the second guide rod (38) penetrates through the protruding blocks, one side of each protruding block is sleeved with a first spring on the second guide rod (38), one end of each first spring is fixed with the inner wall of the second grooves (23), and the other end of each first spring is in contact with the side wall of each protruding block.
4. A performance testing device for a servo motor according to claim 3, wherein a fixing rod penetrates through the L-shaped frame (41), the fixing rod is inserted between the side walls of the fixing frame (21), a limit seat is further arranged on one side of the L-shaped frame (41) through a screw, and the limit seat is also arranged on the fixing rod in a sliding manner and is arranged towards one side of the position where the positioning mechanism (3) is located;
A guide rod III (432) is inserted between the sliding seats (43) at two sides, two screw rods II (431) which are connected into a whole through a coupler are also rotationally arranged between the side walls of the guide rod III (432), the screw directions of the two screw rods II (431) are opposite, an adjusting block (44) slides on the guide rod III (432), and the screw rod III (53) penetrates through the adjusting block (44) and is in screw transmission with the adjusting block;
The load block (42) is provided with a second through hole matched with an output shaft of the servo motor, four limiting rods (421) which are vertically arranged are arranged on the top surface of the load block (42) through threaded connection, the limiting rods (421) are provided with second springs, the plates slide on the limiting rods (421) and are not separated from the limiting rods (421) all the time, the top ends of the second springs are in contact with the bottom surface of the pressing plate (45), circular adsorption sheets (422) are embedded in the side walls of the two sides of the load block (42), the adsorption sheets (422) are in contact with the electric sucking discs (411), and when the electric sucking discs (411) are started, the connection and the fixation with the adsorption sheets (422) can be realized, otherwise, the plates cannot be connected into a whole;
One end of the screw rod III (53) is provided with an extension shaft II which is connected into a whole, the extension shaft II penetrates through the U-shaped frame I (51), and the other end of the synchronous wheel II (52) and the extension shaft II are connected and fixed into a whole through a key.
5. The performance testing device for the servo motor according to claim 4, wherein two fixing blocks are arranged on the second U-shaped frame (61), a screw rod four (621) is rotatably arranged between the two fixing blocks, the screw rod four (621) rotates one circle at a time, and the screw rod four (621) penetrates through the gear frame (62) and is in threaded transmission with the gear frame;
One side of the driving wheel (66) is provided with a first fixed ring on the fixed shaft (64), the driving wheel (66) is rotationally arranged on one side of the first fixed ring through a bearing with a T-shaped structure, the length of the first gear (63) is equal to the distance between planes of two surfaces of the two gears (65) which are oppositely arranged, the first gear (63) is rotationally arranged between the side walls of the gear frame (62) through shaft connection, the gear frame (62) is also provided with two vertical shafts which are vertically arranged, the top of each vertical shaft is connected with a second fixed ring, the second fixed ring is slidingly arranged on the fixed shaft (64), and the second gear is rotationally arranged on one side of the second fixed ring through a bearing with a T-shaped structure;
A magnetic ring (651) is arranged on the side wall of the other side of the gear II (65), a circular ring groove I (661) is arranged on the driving wheel (66), the circular ring groove I (661) is arranged opposite to the magnetic ring (651) and is matched with the magnetic ring, a circular magnet sheet (641) is embedded on the fixed shaft (64), at least three pin holes are arranged in the driving wheel (66), positioning pins (67) are arranged in the pin holes, the positioning pins (67) are magnets and move along the direction of the pin holes, two ends of each positioning pin (67) are respectively matched with the magnetic ring (651) and the magnetic sheet (641), and the suction force of the magnetic ring (651) on the positioning pins (67) is larger than that of the magnetic sheet (641) on the positioning pins (67).
6. The performance testing device for a servo motor according to claim 5, wherein when the screw rod four (621) rotates for one turn, the gear rack (62) drives the gear one (63) and the gear two (65) to synchronously make a linear motion along the length direction of the U-shaped rack two (61), only the magnetic ring (651) on one side of the gear two (65) and the circular ring groove one (661) on the driving wheel (66) positioned on the same side are connected into a whole, at this time, because the suction force of the magnetic ring (651) is greater than that of the magnet sheet (641), the positioning pin (67) which is originally adsorbed and fixed with the magnet sheet (641) moves to the magnetic ring (651) side and is finally connected with the magnetic ring (651) into a whole through suction force, namely in this case, the synchronous wheel one (37) or the synchronous wheel two (52) are driven through the cooperation of the gear two (65) and the driving wheel (66) to output along with the rotation of the gear one (63);
During the movement of the positioning pin (67), one end is always positioned inside the driving wheel (66).
7. The performance testing device for the servo motor according to claim 6, wherein a groove III is formed in one end of the fixed plate (2), mounting supports (72) are mounted at two end corners of the groove III through bolts, a fixed disc (71) is fixed between the mounting supports (72) at two sides through screws, a through hole (711) is formed in the middle of the fixed disc (71), and the diameter of the through hole (711) is larger than that of the linkage shaft (73);
A circular groove II (712) is formed in the fixed disc (71), a fixing bolt (751) is arranged in a cylindrical structure, one end of the fixing bolt slides between the inner walls of the circular groove II (712), the other end of the fixing bolt (751) is arranged on a rotating handle (75) through a screw, a top rod (762) is connected to the top of a top block (76), and one end of the top rod (762) is exposed out of the fixed disc (71);
A connecting flange (74) is also fixed between the linkage shaft (73) and the output shaft of the servo motor through a screw, and the rotating handle (75) is fixed with the linkage shaft (73) through a key pin in a plug-in manner.
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| CN117805613A (en) | 2024-04-02 |
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