CN103344449A - Single degree of freedom numerically controlled machine tool loading device and loading test method - Google Patents
Single degree of freedom numerically controlled machine tool loading device and loading test method Download PDFInfo
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- CN103344449A CN103344449A CN2013102864831A CN201310286483A CN103344449A CN 103344449 A CN103344449 A CN 103344449A CN 2013102864831 A CN2013102864831 A CN 2013102864831A CN 201310286483 A CN201310286483 A CN 201310286483A CN 103344449 A CN103344449 A CN 103344449A
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Abstract
A single degree of freedom numerically controlled machine tool loading device is formed by a servo loading mechanism and a control system, wherein a mechanical part of the servo loading mechanism exerts load on a machine tool spindle through a port of the numerically controlled machine tool spindle; the servo loading mechanism comprises an X / Y axis horizontal loading module, a Z axis vertical loading module and a torque loading module, and the three loading modules can be independently used; the control system is used for achieving the functions of servo motor control, load calculation, signal processing and the like on the mechanical part of the servo loading mechanism. A single degree of freedom numerically controlled machine tool loading test method comprises the five steps that firstly, specific test requirements and a test scheme are determined; secondly, connecting operation of the machine tool spindle is completed; thirdly, installation operation of the loading modules and a machine tool work table is completed; fourthly, the load is exerted on the machine tool spindle, and the magnitude of the load is measured; fifthly, results are calculated and outputted. According to the loading device and loading test method, loading is carried out on two collinear directions of the machine tool spindle, and a single degree of freedom loading mode of a numerically controlled machine tool is effectively expanded.
Description
Technical field
The present invention relates to a kind of single-degree-of-freedom numerically-controlled machine charger and load test method, belong to machine tool capability experimental technique field, be used in the load test of numerically-controlled machine fail-test along X, Y, Z axle single effect power and Z axle moment of torsion.
Background technology
Numerically-controlled machine is the manufacturing key equipment of modern mechanical, and current Chinese numerically-controlled machine consumption figure is according to first place, the world, but the high-grade, digitally controlled machine tools on the home market also mainly depend on import.The one of the main reasons that influences homemade high-grade, digitally controlled machine tools competitive power is product quality, and one of topmost quality problems of homemade lathe are reliability of products.
In the numerically-controlled machine reliability testing, the most frequently used load mode is that single-degree-of-freedom loads at present, comprises along X, Y direction level loading, along aspects such as the vertical loading of Z-direction and moment of torsion loadings.In the single-degree-of-freedom loading procedure, need charger according to loading spectrum machine tool chief axis to be applied continuous variable load, simultaneously, for real simulated machine tool chief axis single-degree-of-freedom stress form in actual applications more, charger need be realized servo-actuated loading to machine tool chief axis, namely in the machine tool chief axis motion process, charger can be to its imposed load when following motion of main shaft.To sum up, need a kind of reciprocal continuous motion that possesses at present, the charger of response and servo-actuated loading is to satisfy the loading requirement of numerically-controlled machine reliability testing fast.Because advantages such as linear electric motors have that speed is fast, response is fast and dynamic perfromance is good are so select for use linear electric motors as the main driver part of single-degree-of-freedom power loading in the charger.Simultaneously, because characteristics such as torque motor has high pulling torque, response is fast and overload capacity is strong, so the main driver part of selecting for use torque motor to load as moment in the charger.
The present invention proposes a kind of single-degree-of-freedom numerically-controlled machine charger, adopt linear electric motors and torque motor to drive, machine tool chief axis is carried out the servo-actuated loading of single-degree-of-freedom power and moment, namely when following the machine tool chief axis motion, for it applies formulation load, the real simulated machine tool chief axis single-degree-of-freedom load that is in operation and receives more is for accurate assessment numerically-controlled machine reliability provides capable loading means.Linear electric motors and torque motor are applied to the servo-actuated load test of single-degree-of-freedom numerically-controlled machine precedent is not arranged now yet.
Summary of the invention
1, purpose; The purpose of this invention is to provide a kind of single-degree-of-freedom numerically-controlled machine charger and load test method, this device need not carry out the authentic material cutting, can carry out single-degree-of-freedom to lathe according to the specified load spectrum loads, comprise along X, Y, Z axle single effect power and along Z axle moment of torsion, with the reliability of test numerically-controlled machine continuous working under simulation single-degree-of-freedom operating load situation; This device remedies the deficiency of load test means in the present lathe reliability testing for the numerically-controlled machine reliability assessment provides new green high-efficient research technique.
2, technical scheme:
(1) a kind of single-degree-of-freedom numerically-controlled machine of the present invention charger, this device is made up of servo-actuated load maintainer and control system two large divisions, relation is therebetween: the mechanical part of servo-actuated load maintainer is by giving the machine tool chief axis imposed load with the mechanical interface of main shaft of numerical control machine tool, and control system is used for realization to motion control and the force servo control of servo-actuated load maintainer mechanical part.
Described servo-actuated load maintainer comprises X/Y axle horizontal load-on module, the vertical load-on module of Z axle and moment of torsion load-on module three parts.Three kinds of load-on modules can be distinguished independent use, can select for use corresponding load-on module to test according to the kind of load test.
(1) described X/Y axle horizontal load-on module comprises: main shaft loads mandrel, main shaft be installed assembly, mounting bracket, linear motor assembly, pull pressure sensor.Its position and annexation are: the permanent magnetic linear synchronous motor in the linear motor assembly is fixed on the platen, connection support on the linear electric motors motion platform; The main shaft assembly that is installed is connected with mounting bracket by the line slideway in the linear motor assembly, can be along the relative motion of guide rail direction; Simultaneously, main shaft is installed and is connected by pull pressure sensor between assembly and the mounting bracket; Main shaft of numerical control machine tool loads mandrel and the main shaft assembly that is installed by main shaft and is rigidly connected.Fig. 1 is X/Y axle horizontal load-on module structural representation
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and X/Y axle horizontal load-on module.It is that the face of cylinder is used for the be installed connection of assembly of X/Y axle horizontal load-on module main shaft it being fixed in this load-on module that main shaft loads mandrel one end.The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected.The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes.Fig. 2 loads the structural representation of mandrel for main shaft.
This main shaft assembly that is installed loads mandrel latch mechanism, rolling bearing, pull pressure sensor mounting interface and slide block by the mechanism body that is installed, main shaft and forms; Position annexation therebetween is: the mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, and makes this latch mechanism can realize gyration, is used for realizing loading being rigidly connected of mandrel with main shaft; The mechanism's main body side face that is installed has designed the pull pressure sensor mounting interface, is used for installing pull pressure sensor; The two groups of parallel slide blocks that have been installed mechanism's bottom part body design and installation are used for cooperating with line slide rail on the mounting bracket.This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads mandrel latch mechanism, pull pressure sensor mounting interface and slide block.It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, can realize main shaft is loaded the locking of mandrel; This pull pressure sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This slide block is accurate line slideway slide block, and quantity is 4, is used for cooperating with line slide rail on the mounting bracket, makes assembly can realize straight reciprocating motion.This rolling bearing is taper roll bearing, and quantity is 2, is commercial.Fig. 3 is this main shaft modular construction synoptic diagram that is installed.
This mounting bracket, formed by mounting base, pull pressure sensor mounting interface and line slideway, annexation between it is: mounting base is fixed on the linear electric motors motion platform, on the perpendicular of mounting base design and installation the pull pressure sensor mounting interface, symmetry has been installed line slideway on the mounting base horizontal plane.Mounting base is right-angle structure, and pull pressure sensor and the main shaft assembly that is installed be used for to be installed, and in realizing being rigidly connected with the linear electric motors plane of movement.This pull pressure sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This line slideway is accurate ball line slide rail, and quantity is 2, and the slide block that is used for being installed on the assembly with main shaft cooperates, and makes the main shaft assembly that is installed can realize straight reciprocating motion with respect to mounting bracket.Fig. 4 is this mounting bracket structural representation.
This linear motor assembly, comprise permanent magnetic linear synchronous motor, displacement transducer and line slideway, position annexation therebetween is: line slideway is installed on permanent magnetic linear synchronous motor stator both sides, and both directions are parallel, and the permanent magnetic linear synchronous motor mover can be realized toward the complex line slippage; Displacement transducer is installed on the linear motor rotor, realizes the real-time feedback to the linear electric motors moving platform position.Linear motor assembly provides power for X/Y axle horizontal load-on module.Fig. 5 is this linear motor assembly structural representation.
This pull pressure sensor, be high-precision pull pressure sensor, quantity is 1, can feed back the load condition that X/Y axle horizontal load-on module applies machine tool chief axis in real time, the process of real-time monitored load test is for the measurement of lathe reliability provides the important suffered load data of main shaft.
(2) the vertical load-on module of described Z axle comprises: main shaft loads mandrel, main shaft be installed assembly, linear motor assembly, rail brackets, pull pressure sensor, mounting frame for sensor, module mounting base.Its position and annexation are: the module mounting base is fixed on the platen, and linear motor assembly vertically is installed on the module mounting base, and symmetric position has been installed rail brackets with it; The mounting frame for sensor both sides are connected with rail brackets with linear motor assembly respectively; The main shaft assembly that is installed is connected with mounting frame for sensor by line slideway, can realize vertical slip, and simultaneously, pull pressure sensor is installed on mounting frame for sensor bottom centre, and two ends have connected main shaft be installed assembly and mounting frame for sensor respectively; The main shaft assembly that is installed loads mandrel by main shaft and is connected with main shaft of numerical control machine tool.Fig. 6 is the vertical load-on module structural representation of Z axle.
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and the vertical load-on module of Z axle.It is that the face of cylinder is used for the be installed connection of assembly of the vertical load-on module main shaft of Z axle it being fixed in this load-on module that main shaft loads mandrel one end.The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected.The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes.Fig. 2 loads the structural representation of mandrel for main shaft
This main shaft assembly that is installed loads mandrel latch mechanism, rolling bearing, pull pressure sensor mounting interface and slide block by the mechanism body that is installed, main shaft and forms; Position annexation therebetween is: the mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, and makes latch mechanism can realize gyration, is used for realizing loading being rigidly connected of mandrel with main shaft; The mechanism's bottom part body that is installed has designed the pull pressure sensor mounting interface, is used for installing pull pressure sensor; Each symmetry of the mechanism body that is installed both sides has been installed two groups of parallel slide blocks, is used for cooperating with line slide rail on the mounting frame for sensor.This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads mandrel latch mechanism, pull pressure sensor mounting interface and slide block.It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, can realize main shaft is loaded the locking of mandrel; This sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This slide block is accurate line slideway slide block, and quantity is 8, is used for cooperating with line slide rail on the mounting frame for sensor, makes assembly can realize straight reciprocating motion.This rolling bearing is taper roll bearing, and quantity is 2, is commercial.Fig. 7 is this main shaft modular construction synoptic diagram that is installed.
This linear motor assembly, comprise permanent magnetic linear synchronous motor, displacement transducer, line slideway and vertical rack, position annexation therebetween is: permanent magnetic linear synchronous motor is installed on the vertical rack, line slideway is installed on permanent magnetic linear synchronous motor stator both sides, and both directions are parallel, and the permanent magnetic linear synchronous motor mover can be realized toward the complex line slippage; Displacement transducer is installed on the linear motor rotor, realizes the real-time feedback to the linear electric motors moving platform position.Linear motor assembly provides power for the vertical load-on module of Z axle.This vertical rack is that rectangular steel plates is made, the bottom symmetric arrangement triangle reinforcing rib structure.Fig. 8 is this linear motor assembly structural representation
This rail brackets is made up of guide rail mounting base and line slideway, and position annexation therebetween is: the line slideway symmetry is installed on guide rail mounting base both sides.This guide rail mounting base is that rectangular steel plates is made, the bottom symmetric arrangement triangle reinforcing rib structure.Fig. 9 is this guide rail bracket structure synoptic diagram.
This pull pressure sensor, be high-precision pull pressure sensor, quantity is 1, can feed back the load condition that the vertical load-on module of Z axle applies machine tool chief axis in real time, the process of real-time monitored load test is for the measurement of lathe reliability provides the important suffered load data of main shaft.
This mounting frame for sensor, formed by mounting base, pull pressure sensor mounting interface, line slideway and slide block, annexation between it is: mounting base one side is fixed on the linear electric motors motion platform, and opposite side is connected with line slideway on the rail brackets by slide block; On the bottom surface of mounting base design and installation the pull pressure sensor mounting interface, in mounting base inner plane symmetria bilateralis line slideway has been installed.Mounting base is the cube frame structure, and pull pressure sensor and the main shaft assembly that is installed be used for to be installed, and realizes being rigidly connected in the linear electric motors motion platform.This sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This line slideway is accurate ball line slide rail, and quantity is 4, and the slide block that is used for being installed on the assembly with main shaft cooperates, and makes the main shaft assembly that is installed can realize straight reciprocating motion with respect to mounting frame for sensor.Figure 10 is this mounting frame for sensor structural representation.
This module mounting base is the rectangular steel plates structure, and quantity is 1, leaves the mounting interface of linear motor assembly and rail brackets above, and while and platen are rigidly connected.
(3) described moment of torsion load-on module comprises: main shaft loads mandrel, main shaft be installed assembly, torque motor assembly and module mounting base.Its position and annexation are: the module mounting base is fixed on the platen, and the torque motor assembly vertically is installed on the module mounting base, and the main shaft assembly that is installed vertically is installed on the module mounting base, and with torque motor axis conllinear.The main shaft assembly that is installed loads mandrel by main shaft and is connected with main shaft of numerical control machine tool.Figure 11 is moment of torsion load-on module structural representation.
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and X/Y axle horizontal load-on module.It is that the face of cylinder is used for the be installed connection of assembly of X/Y axle horizontal load-on module main shaft it being fixed in this load-on module that main shaft loads mandrel one end.The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected.The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes.Fig. 2 loads the structural representation of mandrel for main shaft
This main shaft assembly that is installed loads the mandrel latch mechanism and rolling bearing is formed by the mechanism body that is installed, main shaft; Position annexation therebetween is: the mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, make latch mechanism can realize gyration, the mechanism body that is installed and module mounting base are rigidly connected, simultaneously, main shaft loads mandrel latch mechanism axis and torque motor axis conllinear.This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads the mandrel latch mechanism.It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, can realize main shaft is loaded the locking of mandrel, can carry out gyration with respect to the mechanism body that is installed simultaneously; This rolling bearing is taper roll bearing, and quantity is 2, is commercial.Figure 12 is the be installed modular construction signal of this main shaft.
This torque motor assembly, formed by torque motor, motor mounting flange and shaft coupling, position annexation therebetween is: torque motor is realized being rigidly connected by motor mounting flange and module mounting base, at the torque motor output shaft shaft coupling is installed, is loaded the mandrel latch mechanism with main shaft and be connected.This torque motor is alternating current torque motor, and quantity is 1, is commercial; The motor mounting flange is the rectangular flat structure, and quantity is 1; Shaft coupling is half flexible clutch, and quantity is 1, is commercial.Figure 13 is this torque motor modular construction synoptic diagram.
This module mounting base is the cube frame structure, and quantity is 1, leaves torque motor assembly and the main shaft component interface that is installed on it, is used for being rigidly connected.Module mounting base bottom is rigidly connected with platen.
Described control system is made up of servo driver of motor, motion control card, sensor receiver and amplifier, pull pressure sensor amplifier, control system software, microcomputer, LCD and monitoring camera.Electric connecting relation between it is: microcomputer and motion control card, LCD and monitoring camera are realized being electrically connected, and simultaneously, motion control card and servo driver of motor, sensor receiver and amplifier are realized being electrically connected.Control system software is installed in the operating system of microcomputer.This servo driver of motor adopts AC servo driver, quantity is 1, can realize that to the adjusting of linear electric motors and torque motor self performance test servo-control system feedback arranges situation, set the concrete mode of operation of motor and realize open loop and closed-loop control to servo motor.This motion control card adopts multi-axis motion control card, quantity is 1, can realize simultaneously linear electric motors and torque motor being coordinated control, thereby realize control linear electric motors motion platform pose, translational speed and loaded load, and the output load of torque motor.By the signals collecting interface of control card, can realize pull pressure sensor and displacement transducer are gathered Signal Processing, realize the accurate control to charger.This sensor receiver and amplifier adopt the displacement transducer amplifier respectively, and quantity is 1; This pull pressure sensor amplifier, quantity are 1, can realize reading with digital-to-analog conversion of displacement transducer and the high-precision data of pull pressure sensor handled.This control system software comprises modular converter, software programming interface, the real-time display interface of virtual coordinate system and real coordinate system, and quantity is 1 cover.Input appointment load be can realize, sensor values, calculating and functions such as the distribution of demonstration load, Displacements Distribution, work space and graph making observed.This microcomputer adopts industrial control computer, and quantity is 1.Can realize sensor is accepted the processing of data, to processing and the execution of instruction that operating personnel send, and to calculating and the drawing of measurement data.This LCD and monitoring camera quantity are 1, can realize operating personnel to the operation interface of the real-time monitoring of each link of load testing machine, display control program and show required inputoutput data in the test.
The concrete principle of work of single-degree-of-freedom numerically-controlled machine charger of the present invention is: choose suitable load-on module according to required loading form, the mounting base of module is connected with platen, and the main shaft of the module assembly that is installed loads mandrel by main shaft and is connected with machine tool chief axis.The output load of operating personnel by the control position of linear electric motors or torque motor is to the main shaft imposed load, and gathers the torque load of the power that applies load and the torque motor feedback of pull pressure sensor feedback.Simultaneously, load-on module can be by the follow value-added tax function of control system realization according to the concrete motion conditions of machine tool chief axis, at last with result's output and drafting response curve.
(2) a kind of single-degree-of-freedom numerically-controlled machine of the present invention load test method, these method concrete steps are as follows:
Step 1: determine lathe kind, motion of main shaft situation, main shaft pose and size, worktable kind and size and concrete test request, determine testing scheme accordingly again.Comprise: load-on module selection, load mode, load distribute, load duration, loading velocity and acceleration setting, output form as a result.
Step 2: regulate and change the main shaft type of attachment of load-on module, select suitable main shaft and load mandrel, to adapt to the current needs of being tested machine tool chief axis, itself and main shaft are connected, finish the connection work of machine tool chief axis.
Step 3: the mounting base in the load-on module is installed, to adapt to the needs of current institute test platen, it is linked to each other with platen, finish the installment work with platen.
Step 4: to machine tool chief axis imposed load and measurement magnitude of load.Initialization control system and each sensor input to magnitude of load, direction that machine tool chief axis applies.In loading procedure, control system can be gathered displacement, speed and the acceleration of machine tool chief axis constantly, and drives the load-on module realization to the loading of following of machine tool chief axis.Simultaneously, control system can real time monitoring apparatus be the situation of main shaft imposed load, and the numerical value of pull pressure sensor can show on display in real time.
Step 5: calculate and the output result.Control system can be exported numerical value and draw corresponding chart automatically with the load that applies according to default output form.
3, advantage and effect:
1) single-degree-of-freedom numerically-controlled machine charger can control effectively and regulates loading procedure.Machine tool chief axis is loaded mandrel by main shaft in the present invention and charger is realized being rigidly connected, can realize the two-way loading along loading direction, simultaneously, single-degree-of-freedom magnitude of load, direction and loading rate of change are adjusted in real time when can free adjustment machine tool chief axis being loaded, realization loads speed change, the variable load of main shaft of numerical control machine tool, and the flexibility ratio of loading is higher.
2) single-degree-of-freedom numerically-controlled machine charger has stronger adaptability to the variety classes lathe.Owing to adopt main shaft loading mandrel that charger is connected with machine tool chief axis, so at different types of lathe, behind the main shaft loading mandrel that only needs to select to be fit to, can load it, have very strong adaptability.
3) single-degree-of-freedom numerically-controlled machine charger can effectively be expanded the loading form.This charger comprises X/Y axle horizontal load-on module, the vertical load-on module of Z axle and moment of torsion load-on module three parts, so can choose suitable load-on module and finish at multi-form load test, has effectively expanded the loading form.
4) single-degree-of-freedom numerically-controlled machine charger can be realized the servo-actuated loading of machine tool chief axis.This load testing machine adopts servo linear motor and torque motor to drive, feedback by power sensor and torque motor output, can realize machine tool chief axis is carried out servo-actuated loading, namely keep setting under the situation of motion at machine tool chief axis, charger can be followed the machine tool chief axis motion, applies formulation load simultaneously.Machine tool chief axis is carried out servo-actuated loading can make loading more near practical working situation.
Description of drawings
Fig. 1, X/Y axle horizontal load-on module structural representation
Fig. 2, X/Y axle horizontal load-on module main shaft loads the structural representation of mandrel
Fig. 3, X/Y axle horizontal load-on module main shaft modular construction synoptic diagram that is installed
Fig. 4, X/Y axle horizontal load-on module mounting bracket structural representation
Fig. 5, X/Y axle horizontal load-on module linear motor assembly structural representation
Fig. 6, the vertical load-on module structural representation of Z axle
Fig. 7, the vertical load-on module main shaft of Z axle modular construction synoptic diagram that is installed
Fig. 8, the vertical load-on module linear motor assembly of Z axle structural representation
Fig. 9, the vertical load-on module guide rail bracket structure of Z axle synoptic diagram
Figure 10, the vertical load-on module mounting frame for sensor of Z axle structural representation
Figure 11, moment of torsion load-on module structural representation
Figure 12, moment of torsion load-on module main shaft modular construction synoptic diagram that is installed
Figure 13, moment of torsion load-on module torque motor modular construction synoptic diagram
Concrete label declaration is as follows among the figure:
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing: see Fig. 1-Figure 13,
(1) a kind of single-degree-of-freedom numerically-controlled machine of the present invention charger, this device is made up of servo-actuated load maintainer and control system two large divisions, relation is therebetween: the mechanical part of servo-actuated load maintainer is by giving the machine tool chief axis imposed load with the interface of main shaft of numerical control machine tool, and control system is used for realizing the functions such as servomotor control, LOAD FOR and signal processing of servo-actuated load maintainer mechanical part.
Described servo-actuated load maintainer comprises X/Y axle horizontal load-on module, the vertical load-on module of Z axle and moment of torsion load-on module three parts.Three kinds of load-on modules can be distinguished independent use, can select for use corresponding load-on module to test according to the kind of load test.
(1) X/Y axle horizontal load-on module
As shown in Figure 1, described X/Y axle horizontal load-on module consists of the following components altogether: main shaft loads be installed assembly 4, mounting bracket 5, linear motor assembly 6, pull pressure sensor 7 of mandrel 3, main shaft and forms.
Main shaft be installed assembly 4, mounting bracket 5, linear motor assembly 6 are made of a plurality of parts and subassembly respectively.Linear motor assembly 6 is fixed on the platen 2, connection support 5 on the linear electric motors motion platform; Be installed assembly 4 of main shaft is connected with mounting bracket 5 by line slideway 13, can be along the relative motion of guide rail direction; Simultaneously, main shaft is installed and is connected by pull pressure sensor 7 between assembly 4 and the mounting bracket 5; Main shaft of numerical control machine tool loads mandrel 3 and the main shaft assembly 4 that is installed by main shaft and is rigidly connected.
The main shaft assembly 4 that is installed
As shown in Figure 3, the main shaft assembly 4 that is installed consists of the following components altogether: the mechanism body that is installed 8, main shaft load totally 4 of mandrel latch mechanism 9, rolling bearing (totally 2), pull pressure sensor mounting interface 10 and slide block 11().
The mechanism body that is installed 8 loads mandrel latch mechanism 9 by rolling bearing and main shaft and is connected, and makes this latch mechanism can realize gyration, is used for realizing loading being rigidly connected of mandrel 3 with main shaft; The mechanism body that is installed 8 lateral layout pull pressure sensor mounting interface 10, pull pressure sensor 7 be used for to be installed; The mechanism body that is installed 8 bottom design have been installed two groups of parallel slide blocks 11, are used for cooperating with line slide rail on the mounting bracket 5.The mechanism body that is installed 8 is cube structure, is used for installing main shaft and loads mandrel latch mechanism 9, pull pressure sensor mounting interface 10 and slide block 11.It is the disc flange structure that main shaft loads mandrel latch mechanism 9, can realize main shaft is loaded the locking of mandrel 3; Pull pressure sensor mounting interface 10 is the disc flange structure, is used for installing pull pressure sensor 7; Slide block 11 is accurate line slideway slide block, is used for cooperating with line slide rail on the mounting bracket, makes assembly can realize straight reciprocating motion.Rolling bearing is taper roll bearing, is commercial.
Mounting bracket 5
As shown in Figure 4, mounting bracket 5 consists of the following components altogether: totally 2 of mounting base 12, pull pressure sensor mounting interface 10 and line slideway 13().
Mounting base 12 is fixed on the linear electric motors motion platform, on the perpendicular of mounting base 12 design and installation pull pressure sensor mounting interface 10, symmetry has been installed line slideway 13 on the mounting base horizontal plane.Mounting base 12 is right-angle structure, and pull pressure sensor 7 and the main shaft assembly 4 that is installed be used for to be installed, and realizes being rigidly connected in the linear electric motors plane of movement.Pull pressure sensor mounting interface 10 is the disc flange structure, is used for installing pull pressure sensor 7; Line slideway 13 is accurate ball line slide rail, and the slide block 11 that is used for being installed on the assembly 4 with main shaft cooperates, and makes the main shaft assembly 4 that is installed can realize straight reciprocating motion with respect to mounting bracket.
As shown in Figure 5, linear motor assembly 6 consists of the following components altogether: permanent magnetic linear synchronous motor 14, displacement transducer 15 and line slideway 13.
(2) the vertical load-on module of described Z axle
As shown in Figure 6, the vertical load-on module of Z axle consists of the following components altogether: main shaft loads mandrel 3, main shaft be installed assembly 4, linear motor assembly 6, rail brackets 16, pull pressure sensor 7, module mounting base 17, mounting frame for sensor 18.
Be installed assembly 4, linear motor assembly 6, rail brackets 16, mounting frame for sensor 18 of main shaft is made of a plurality of parts and subassembly respectively.Module mounting base 17 is fixed on the platen 2, and linear motor assembly 6 vertically is installed on the module mounting base 17, and symmetric position has been installed rail brackets 16 with it; Mounting frame for sensor 18 both sides are connected with rail brackets 16 with linear motor assembly 6 respectively; The main shaft assembly 4 that is installed is connected with mounting frame for sensor 18 by line slideway 13, can realize vertical slip, simultaneously, pull pressure sensor 7 is installed on mounting frame for sensor 18 bottom centre, and two ends have connected main shaft be installed assembly 4 and mounting frame for sensor 18 respectively; The main shaft assembly 4 that is installed loads mandrel 3 by main shaft and is connected with main shaft of numerical control machine tool 1.
The main shaft assembly 4 that is installed
As shown in Figure 7, the main shaft assembly 4 that is installed consists of the following components altogether: main shaft loads totally 8 of mandrel latch mechanism 9, the components mechanism main body 8 that is installed, rolling bearing (totally 2), pull pressure sensor mounting interface 10 and slide block 11().
The mechanism body that is installed 8 loads mandrel latch mechanism 9 by rolling bearing and main shaft and is connected, and makes main shaft load mandrel latch mechanism 9 and can realize gyration, is used for realizing loading being rigidly connected of mandrel 3 with main shaft; The mechanism body that is installed 8 bottom design pull pressure sensor mounting interface 10, pull pressure sensor 7 be used for to be installed; The mechanism body that is installed 8 both sides are designed each symmetry two groups of parallel slide blocks 11 have been installed, and are used for cooperating with line slide rail on the mounting frame for sensor.The mechanism body that is installed 8 is cube structure, is used for installing main shaft and loads mandrel latch mechanism 9, pull pressure sensor mounting interface 10 and slide block 11.It is the disc flange structure that main shaft loads mandrel latch mechanism 9, can realize main shaft is loaded locking and the value-added tax function of mandrel 3; Pull pressure sensor mounting interface 10 is used for installing pull pressure sensor 7; Slide block 11 is accurate line slideway slide block, is used for cooperating with line slide rail on the mounting frame for sensor, makes assembly can realize straight reciprocating motion.Rolling bearing is taper roll bearing, is commercial.
As shown in Figure 8, linear motor assembly 6 consists of the following components altogether: permanent magnetic linear synchronous motor 14, displacement transducer 15, line slideway 13, vertical rack 19.
Permanent magnetic linear synchronous motor 14 is installed on the vertical rack 19, and line slideway 13 is installed on the stator both sides of permanent magnetic linear synchronous motor 14, and both directions are parallel, and the mover of permanent magnetic linear synchronous motor 14 can be realized toward the complex line slippage; Displacement transducer 15 is installed on the linear motor rotor, realizes the real-time feedback to the linear electric motors moving platform position.Linear motor assembly 6 provides power for the vertical load-on module of Z axle.Vertical rack 19 is rectangular steel plates, the bottom symmetric arrangement triangle reinforcing rib structure.
As shown in Figure 9, rail brackets 16 consists of the following components altogether: totally two of guide rail mounting base 20, line slideway 13().
Mounting frame for sensor 18
As shown in figure 10, mounting frame for sensor 18 consists of the following components altogether: totally 4 of mounting base 12, pull pressure sensor mounting interface 10, line slideway 13(), totally 8 of slide block 11().
Mounting base 12 1 sides are fixed on the linear electric motors motion platform, and opposite side is connected with line slideway 13 on the rail brackets 16 by slide block 11; On the bottom surface of mounting base 12 design and installation pull pressure sensor mounting interface 10, in mounting base 12 inner plane symmetria bilateralis line slideway 13 has been installed.Mounting base 12 is the cube frame structure, and pull pressure sensor 7 and the main shaft assembly 4 that is installed be used for to be installed, and realizes being rigidly connected in the linear electric motors motion platform.Sensor mounting interface 10 is the disc flange structure, is used for installing pull pressure sensor 7; Line slideway 13 is accurate ball line slide rail, and the slide block 11 that is used for being installed on the assembly 4 with main shaft cooperates, and makes the main shaft assembly 4 that is installed can realize straight reciprocating motion with respect to mounting frame for sensor 18.
(3) moment of torsion load-on module
As shown in figure 11, the moment of torsion load-on module consists of the following components altogether: main shaft loads mandrel 3, main shaft be installed assembly 4, torque motor assembly 21 and module mounting base 17.
Be installed assembly 4, torque motor assembly 21 of main shaft is made of a plurality of parts and subassembly respectively.Module mounting base 17 is fixed on the platen 2, and torque motor assembly 21 vertically is installed on the module mounting base 17, and the main shaft assembly 4 that is installed vertically is installed on the module mounting base 17, and with torque motor assembly 21 axis conllinear.The main shaft assembly 4 that is installed loads mandrel 3 by main shaft and is connected with main shaft of numerical control machine tool 1.
The main shaft assembly 4 that is installed
As shown in figure 12, the main shaft assembly 4 that is installed consists of the following components altogether: main shaft loads mandrel latch mechanism 9, the mechanism body that is installed 8 and rolling bearing (totally 2).
The mechanism body that is installed 8 loads mandrel latch mechanism 9 by rolling bearing and main shaft and is connected, make main shaft load mandrel latch mechanism 9 and can realize gyration, the mechanism body that is installed 8 is rigidly connected with module mounting base 17, simultaneously, main shaft loads mandrel latch mechanism 9 axis and torque motor assembly 21 axis conllinear.The mechanism body that is installed 8 is cube structure, is used for installing main shaft and loads mandrel latch mechanism 9.It is the disc flange structure that main shaft loads mandrel latch mechanism 9, can realize main shaft is loaded the locking of mandrel 3, can carry out gyration with respect to the mechanism body 8 that is installed simultaneously; Rolling bearing is taper roll bearing, is commercial.
As shown in figure 13, torque motor assembly 21 consists of the following components altogether: torque motor 22, motor mounting flange 23 and shaft coupling 24.
Control system
This control system consists of the following components altogether: servo driver of motor, motion control card, sensor receiver and amplifier, pull pressure sensor amplifier, control system software, microcomputer, LCD and monitoring camera, safe-guard system.
Servo driver of motor adopts AC servo driver, can realize adjusting to linear motor assembly 6 and torque motor 22 self performance, test servo-control system feedback arranges situation, and the concrete mode of operation of setting motor and realization are to open loop and the closed-loop control of servo motor.
Motion control card adopts multi-axis motion control card, can realize simultaneously linear motor assembly 6 and torque motor 22 being coordinated control, thereby realize control linear motor assembly 6, motion platform pose, translational speed and loaded load, and the output load of torque motor 22.By the signals collecting interface of control card, can realize pull pressure sensor 7 and displacement transducer 17 are gathered Signal Processing, realize the accurate control to charger.
Sensor receiver and amplifier adopt displacement transducer amplifier and pull pressure sensor amplifier respectively, can realize reading with digital-to-analog conversion of displacement transducer 17 and pull pressure sensor 7 high-precision data handled.
Control system software comprises modular converter, software programming interface, the real-time display interface of virtual coordinate system and real coordinate system.Input appointment load be can realize, sensor values, calculating and functions such as the distribution of demonstration load, Displacements Distribution, work space and graph making observed.
Microcomputer adopts industrial control computer, can realize sensor is accepted the processing of data, to processing and the execution of instruction that operating personnel send, and to calculating and the drawing of measurement data.
LCD and monitoring camera can be realized operating personnel to the operation interface of the real-time monitoring of each link of load testing machine, display control program and show required inputoutput data in the test.
Embodiment: the vertical CNC milling machine of use single-degree-of-freedom numerically-controlled machine charger is carried out the servo-actuated loading along X-direction.
Below by embodiment, and by reference to the accompanying drawings, structure and the use of this single-degree-of-freedom numerically-controlled machine charger is further described:
1, the installation method of single-degree-of-freedom numerically-controlled machine charger:
1) as shown in Figure 1, owing to be to carry out servo-actuated loading along X-axis to the vertical numerical control milling machine, so choose the X/Y axle horizontal load-on module in the single-degree-of-freedom numerically-controlled machine charger.
2) as shown in Figure 1, select suitable main shaft loading mandrel 3 according to type and the size of milling machine spindle, make it satisfy planer-type milling machine main shaft dimensional requirement.Loading mandrel latch mechanism mechanism 9 by main shaft loads mandrel 3 with main shaft and is fixed in main shaft and is installed on the assembly 4.
3) as shown in Figure 1, the linear motor assembly 6 of single-degree-of-freedom numerically-controlled machine charger is connected with platen, simultaneously, mounting bracket 5 is connected with linear motor assembly 6.Pull pressure sensor 7 is installed on mounting bracket 5 and main shaft is installed between the assembly 4.
2, the using method of single-degree-of-freedom numerically-controlled machine charger:
1) as shown in Figure 1, after finishing the installment work of single-degree-of-freedom numerically-controlled machine charger, carry out initialization operation in control system, be input as the unidirectional force distribution situation that machine tool chief axis loads, this moment, computer control module can demonstrate the desired value of pull pressure sensor 7.
2) in loading procedure, control system is the motion conditions of monitoring main shaft in real time, and machine tool chief axis 1 is independently finished the movement locus of having set, and its motion conditions can show on the display of control system in real time.
3) in loading procedure, control system can be controlled charger machine tool chief axis is carried out servo-actuated loading, simultaneously, real time monitoring apparatus is the situation of main shaft imposed load, the numerical value of pull pressure sensor 7 can show on display in real time, keeps the value of pull pressure sensor 7 to reach target value set originally.
4) control system can be exported loading result automatically according to pull pressure sensor 7 and displacement transducer 17 numerical value of surveying, and draws the response curve of motion of main shaft, charger motion and imposed load simultaneously.
3, single-degree-of-freedom numerically-controlled machine charger is at the adjustment using method of variety classes lathe:
Shown in accompanying drawing 1, accompanying drawing 6 and accompanying drawing 11, if desired the variety classes machine tool chief axis is carried out loading experiment, only need to change main shaft and load mandrel 3, make it satisfy test lathe Working table structure and get final product.
4, single-degree-of-freedom numerically-controlled machine charger loads the adjustment using method of form at difference:
Shown in accompanying drawing 1, accompanying drawing 6 and accompanying drawing 11, if desired machine tool chief axis being carried out multi-form single-degree-of-freedom loads, only need after determining, lathe loading form select the corresponding module use in X/Y axle horizontal load-on module, the vertical load-on module of Z axle and the moment of torsion load-on module to get final product.
Claims (2)
1. single-degree-of-freedom numerically-controlled machine charger, it is characterized in that: this device is made up of servo-actuated load maintainer and control system two large divisions, the mechanical part of servo-actuated load maintainer is by giving the machine tool chief axis imposed load with the mechanical interface of main shaft of numerical control machine tool, and control system is used for realization to motion control and the force servo control of servo-actuated load maintainer mechanical part;
Described servo-actuated load maintainer comprises X/Y axle horizontal load-on module, the vertical load-on module of Z axle and moment of torsion load-on module three parts, and three kinds of load-on module independent uses respectively according to the kind of load test, select for use corresponding load-on module to test;
Described X/Y axle horizontal load-on module comprises: main shaft loads mandrel, main shaft be installed assembly, mounting bracket, linear motor assembly and pull pressure sensor, permanent magnetic linear synchronous motor in the linear motor assembly is fixed on the platen, connection support on the linear electric motors motion platform; The main shaft assembly that is installed is connected with mounting bracket by the line slideway in the linear motor assembly, along the relative motion of guide rail direction; Simultaneously, main shaft is installed and is connected by pull pressure sensor between assembly and the mounting bracket; Main shaft of numerical control machine tool loads mandrel and the main shaft assembly that is installed by main shaft and is rigidly connected;
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and X/Y axle horizontal load-on module; It is that the face of cylinder is used for the be installed connection of assembly of X/Y axle horizontal load-on module main shaft it being fixed in this load-on module that main shaft loads mandrel one end; The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected; The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes;
This main shaft assembly that is installed loads mandrel latch mechanism, rolling bearing, pull pressure sensor mounting interface and slide block by the mechanism body that is installed, main shaft and forms; The mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, and makes this latch mechanism realize gyration, is used for realizing loading being rigidly connected of mandrel with main shaft; The mechanism's main body side face that is installed has designed the pull pressure sensor mounting interface, is used for installing pull pressure sensor; The two groups of parallel slide blocks that have been installed mechanism's bottom part body design and installation are used for cooperating with line slide rail on the mounting bracket; This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads mandrel latch mechanism, pull pressure sensor mounting interface and slide block; It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, realizes main shaft is loaded the locking of mandrel; This pull pressure sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This slide block is accurate line slideway slide block, and quantity is 4, is used for cooperating with line slide rail on the mounting bracket, makes assembly realize straight reciprocating motion; This rolling bearing is taper roll bearing, and quantity is 2;
This mounting bracket, formed by mounting base, pull pressure sensor mounting interface and line slideway, mounting base is fixed on the linear electric motors motion platform, on the perpendicular of mounting base design and installation the pull pressure sensor mounting interface, symmetry has been installed line slideway on the mounting base horizontal plane; Mounting base is right-angle structure, and pull pressure sensor and the main shaft assembly that is installed be used for to be installed, and in realizing being rigidly connected with the linear electric motors plane of movement; This pull pressure sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This line slideway is accurate ball line slide rail, and quantity is 2, and the slide block that is used for being installed on the assembly with main shaft cooperates, and makes the main shaft assembly that is installed realize straight reciprocating motion with respect to mounting bracket;
This linear motor assembly comprises permanent magnetic linear synchronous motor, displacement transducer and line slideway, and line slideway is installed on permanent magnetic linear synchronous motor stator both sides, and both directions are parallel, and the permanent magnetic linear synchronous motor mover is realized toward the complex line slippage; Displacement transducer is installed on the linear motor rotor, realizes the real-time feedback to the linear electric motors moving platform position, and linear motor assembly provides power for X/Y axle horizontal load-on module;
This pull pressure sensor, be high-precision pull pressure sensor, quantity is 1, feeds back the load condition that X/Y axle horizontal load-on module applies machine tool chief axis in real time, the process of real-time monitored load test is for the measurement of lathe reliability provides the important suffered load data of main shaft;
The vertical load-on module of described Z axle comprises: main shaft loads mandrel, main shaft be installed assembly, linear motor assembly, rail brackets, pull pressure sensor, mounting frame for sensor and module mounting base; The module mounting base is fixed on the platen, and linear motor assembly vertically is installed on the module mounting base, and symmetric position has been installed rail brackets with it; The mounting frame for sensor both sides are connected with rail brackets with linear motor assembly respectively; The main shaft assembly that is installed is connected with mounting frame for sensor by line slideway, realizes vertically sliding, and simultaneously, pull pressure sensor is installed on mounting frame for sensor bottom centre, and two ends have connected main shaft be installed assembly and mounting frame for sensor respectively; The main shaft assembly that is installed loads mandrel by main shaft and is connected with main shaft of numerical control machine tool;
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and the vertical load-on module of Z axle; It is that the face of cylinder is used for the be installed connection of assembly of the vertical load-on module main shaft of Z axle it being fixed in this load-on module that main shaft loads mandrel one end; The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected; The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes;
This main shaft assembly that is installed loads mandrel latch mechanism, rolling bearing, pull pressure sensor mounting interface and slide block by the mechanism body that is installed, main shaft and forms; The mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, and makes latch mechanism realize gyration, is used for realizing loading being rigidly connected of mandrel with main shaft; The mechanism's bottom part body that is installed has designed the pull pressure sensor mounting interface, is used for installing pull pressure sensor; Each symmetry of the mechanism body that is installed both sides has been installed two groups of parallel slide blocks, is used for cooperating with line slide rail on the mounting frame for sensor; This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads mandrel latch mechanism, pull pressure sensor mounting interface and slide block; It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, realizes main shaft is loaded the locking of mandrel; This sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This slide block is accurate line slideway slide block, and quantity is 8, is used for cooperating with line slide rail on the mounting frame for sensor, makes assembly realize straight reciprocating motion; This rolling bearing is taper roll bearing, and quantity is 2;
This linear motor assembly, comprise permanent magnetic linear synchronous motor, displacement transducer, line slideway and vertical rack, permanent magnetic linear synchronous motor is installed on the vertical rack, line slideway is installed on permanent magnetic linear synchronous motor stator both sides, and both directions are parallel, and the permanent magnetic linear synchronous motor mover is realized toward the complex line slippage; Displacement transducer is installed on the linear motor rotor, realizes the real-time feedback to the linear electric motors moving platform position, and linear motor assembly provides power for the vertical load-on module of Z axle; This vertical rack is that rectangular steel plates is made, the bottom symmetric arrangement triangle reinforcing rib structure;
This rail brackets is made up of guide rail mounting base and line slideway, and the line slideway symmetry is installed on guide rail mounting base both sides; This guide rail mounting base is that rectangular steel plates is made, the bottom symmetric arrangement triangle reinforcing rib structure;
This pull pressure sensor, be high-precision pull pressure sensor, quantity is 1, feeds back the load condition that the vertical load-on module of Z axle applies machine tool chief axis in real time, the process of real-time monitored load test is for the measurement of lathe reliability provides the important suffered load data of main shaft;
This mounting frame for sensor is made up of mounting base, pull pressure sensor mounting interface, line slideway and slide block, and mounting base one side is fixed on the linear electric motors motion platform, and opposite side is connected with line slideway on the rail brackets by slide block; In the bottom surface of mounting base the pull pressure sensor mounting interface has been installed, in mounting base inner plane symmetria bilateralis line slideway has been installed; Mounting base is the cube frame structure, and pull pressure sensor and the main shaft assembly that is installed be used for to be installed, and realizes being rigidly connected in the linear electric motors motion platform; This sensor mounting interface is the disc flange structure, and quantity is 1, is used for installing pull pressure sensor; This line slideway is accurate ball line slide rail, and quantity is 4, and the slide block that is used for being installed on the assembly with main shaft cooperates, and makes the main shaft assembly that is installed realize straight reciprocating motion with respect to mounting frame for sensor;
This module mounting base is the rectangular steel plates structure, and quantity is 1, leaves the mounting interface of linear motor assembly and rail brackets above, and while and platen are rigidly connected;
Described moment of torsion load-on module comprises: main shaft loads mandrel, main shaft be installed assembly, torque motor assembly and module mounting base; The module mounting base is fixed on the platen, and the torque motor assembly vertically is installed on the module mounting base, and the main shaft assembly that is installed vertically is installed on the module mounting base, and with torque motor axis conllinear; The main shaft assembly that is installed loads mandrel by main shaft and is connected with main shaft of numerical control machine tool;
This main shaft loads mandrel, is many steps of solid of revolution axle construction, and quantity is 1, is used for realizing being rigidly connected of machine tool chief axis and X/Y axle horizontal load-on module; It is that the face of cylinder is used for the be installed connection of assembly of X/Y axle horizontal load-on module main shaft it being fixed in this load-on module that main shaft loads mandrel one end; The other end is the conical surface of Morse's taper, is connected with handle of a knife chucking device in the machine tool chief axis, realizes that main shaft loads mandrel and the effective of machine tool chief axis is connected; The main shaft that this load-on module is furnished with different taperings, different connected modes loads mandrel, to be used for the loading experiment of different lathes;
This main shaft assembly that is installed loads the mandrel latch mechanism and rolling bearing is formed by the mechanism body that is installed, main shaft; The mechanism body that is installed loads the mandrel latch mechanism by rolling bearing and main shaft and is connected, make latch mechanism realize gyration, the mechanism body that is installed and module mounting base are rigidly connected, and simultaneously, main shaft loads mandrel latch mechanism axis and torque motor axis conllinear; This mechanism body that is installed is cube structure, and quantity is 1, is used for installing main shaft and loads the mandrel latch mechanism; It is the disc flange structure that this main shaft loads the mandrel latch mechanism, and quantity is 1, realizes main shaft is loaded the locking of mandrel, carries out gyration with respect to the mechanism body that is installed simultaneously; This rolling bearing is taper roll bearing, and quantity is 2;
This torque motor assembly, formed by torque motor, motor mounting flange and shaft coupling, torque motor is realized being rigidly connected by motor mounting flange and module mounting base, at the torque motor output shaft shaft coupling is installed, and loads the mandrel latch mechanism with main shaft and is connected; This torque motor is alternating current torque motor, and quantity is 1; The motor mounting flange is the rectangular flat structure, and quantity is 1; Shaft coupling is half flexible clutch, and quantity is 1;
This module mounting base is the cube frame structure, and quantity is 1, leaves torque motor assembly and the main shaft component interface that is installed on it, is used for being rigidly connected, and module mounting base bottom is rigidly connected with platen;
Described control system is made up of servo driver of motor, motion control card, sensor receiver and amplifier, pull pressure sensor amplifier, control system software, microcomputer, LCD and monitoring camera; Microcomputer and motion control card, LCD and monitoring camera are realized being electrically connected, simultaneously, motion control card and servo driver of motor, sensor receiver and amplifier are realized being electrically connected, and control system software is installed in the operating system of microcomputer; This servo driver of motor adopts AC servo driver, quantity is 1, realization is adjusted to linear electric motors and torque motor self performance, and test servo-control system feedback arranges situation, and the concrete mode of operation of setting motor and realization are to open loop and the closed-loop control of servo motor; This motion control card adopts multi-axis motion control card, and quantity is 1, simultaneously linear electric motors and torque motor is coordinated control, thereby realizes control linear electric motors motion platform pose, translational speed and loaded load, and the output load of torque motor; By the signals collecting interface of control card, realize pull pressure sensor and displacement transducer are gathered Signal Processing, realize the accurate control to charger; This sensor receiver and amplifier adopt the displacement transducer amplifier respectively, and quantity is 1; This pull pressure sensor amplifier, quantity are 1, realize reading with digital-to-analog conversion of displacement transducer and the high-precision data of pull pressure sensor handled; This control system software comprises modular converter, software programming interface, the real-time display interface of virtual coordinate system and real coordinate system, quantity is 1 cover, realizes input appointment load, observes sensor values, calculating and the distribution of demonstration load, Displacements Distribution, work space and graph making function; This microcomputer adopts industrial control computer, and quantity is 1, realizes sensor is accepted the processing of data, to processing and the execution of instruction that operating personnel send, and to calculating and the drawing of measurement data; This LCD and monitoring camera quantity are 1, realize operating personnel to the operation interface of the real-time monitoring of each link of load testing machine, display control program and show required inputoutput data in the test.
2. single-degree-of-freedom numerically-controlled machine load test method, it is characterized in that: these method concrete steps are as follows:
Step 1: determine lathe kind, motion of main shaft situation, main shaft pose and size, worktable kind and size and concrete test request, determine testing scheme accordingly again; Comprise: load-on module selection, load mode, load distribute, load duration, loading velocity and acceleration setting, output form as a result;
Step 2: regulate and change the main shaft type of attachment of load-on module, select suitable main shaft and load mandrel, to adapt to the current needs of being tested machine tool chief axis, itself and main shaft are connected, finish the connection work of machine tool chief axis;
Step 3: the mounting base in the load-on module is installed, to adapt to the needs of current institute test platen, it is linked to each other with platen, finish the installment work with platen;
Step 4: to machine tool chief axis imposed load and measurement magnitude of load, initialization control system and each sensor input to magnitude of load, direction that machine tool chief axis applies; In loading procedure, control system can be gathered displacement, speed and the acceleration of machine tool chief axis constantly, and drives the load-on module realization to the loading of following of machine tool chief axis; Simultaneously, control system can real time monitoring apparatus be the situation of main shaft imposed load, and the numerical value of pull pressure sensor can show on display in real time;
Step 5: calculate also output result, control system can be exported numerical value and draw corresponding chart automatically with the load that applies according to default output form.
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| CN110186750A (en) * | 2019-06-05 | 2019-08-30 | 北京首钢冷轧薄板有限公司 | A kind of process equipment and method of hardness ga(u)ge block |
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| CN110261118B (en) * | 2019-06-06 | 2021-04-16 | 重庆交通大学 | Multi-degree-of-freedom spherical motor test bed |
| WO2024050942A1 (en) * | 2022-09-07 | 2024-03-14 | 纽威数控装备(苏州)股份有限公司 | Machine tool spindle loading test apparatus |
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