CN109739180A - Based on the determination method of the work of numerical control machine plane Instantaneous center of SolidWorks, ADAMS - Google Patents
Based on the determination method of the work of numerical control machine plane Instantaneous center of SolidWorks, ADAMS Download PDFInfo
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- CN109739180A CN109739180A CN201910011891.3A CN201910011891A CN109739180A CN 109739180 A CN109739180 A CN 109739180A CN 201910011891 A CN201910011891 A CN 201910011891A CN 109739180 A CN109739180 A CN 109739180A
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Abstract
The present invention is disclosed based on SolidWorks, the determination method of the work of numerical control machine plane Instantaneous center of ADAMS, applied to NC Machine Error compensation technique field, numerically-controlled machine tool can be gone out by ADAMS dynamics simulation along X, Y, the beat generated in respective planes in Z axis guide rail motion process is instantaneous, pitching is instantaneous, the instantaneous specific location of rolling, accurately calculating for respective Abbe arm is carried out by each instantaneous position, instantaneous concept is added in the modeling of numerically-controlled machine tool composition error, the modeling of lathe composition error can be improved, to improve NC Machine Error compensation precision.Specifically include the instantaneous calculating of the guide track system working model of numerically-controlled machine tool overall model and simplification based on SolidWorks, the guide track system workbench dynamics simulation based on ADAMS and the work of numerical control machine plane based on Motion of Rigid Body instantaneous center of velocity theory.
Description
Technical field
The present invention relates to NC Machine Error compensation technique field, and in particular to a kind of based on SolidWorks, ADAMS
The determination method of work of numerical control machine plane Instantaneous center.
Background technique
It is all using the two-dimentional heap that by X, the slide carriage in Y both direction is formed by stacking up and down that numerically controlled machine is most of
Stack structure is all made of two linear guides in each direction, to realize along the movement on a direction.Due to guide rail
There is foozles for system itself, and in platen motion process, and guide track system equally will receive thermal deformation, power becomes
The influence of the factors such as shape generates corresponding error, and the error between two guide rails can have differences.Therefore platen exists
During moving along guide rail, translational motion can be not only generated, but also additional rotation can be generated due to the difference between guide rail
Transhipment is dynamic.
During the plane motion of rigid body, as long as any sectional view for being parallel to certain fixed pan is any on rigid body
Instantaneous angular speed is not zero, and the speed for just necessarily having a point is zero, which is denoted as instantaneous center of velocity.Numerically controlled machine
The corresponding mobile processing to realize workpiece is carried out under the action of guide rail, but due to the influence of guiding error, workbench exists
During being moved along a straight line along a certain axis, straight line offset can be generated in other two axis directions, while generating around three axis
The angular error of rotation causes to produce additional rotary motion, and the characteristics of motion is indefinite, therefore there are speed winks for workbench
The heart, and speed Instantaneous center is constantly in variation.And in existing lathe composition error modeling and compensation, about it
Middle Abbe error compensating Modeling part is the respective Abbe between optical grating measuring system reading head and point to be processed of Z axis by X, Y
What arm was calculated, do not account for the instantaneous influence to machine tooling error of guide track system workbench, thus the error established
Model Consideration is not comprehensive, and the Abbe arm compensation model of foundation is inaccurate.Therefore wink must be added in composition error modeling
When the centre of motion theory can just accurately calculate Abbe arm, to realize more accurate machine tool error compensation.
With the development of kinematics technology, a kind of movement of the ADAMS as Kinematics Simulation technology, in Mechanical course field
It is widely used in credit analysis, thus herein by 3 d modeling software SolidWorks and dynamics simulation software
ADAMS carry out machine tool guideway system workbench in working face real time kinematics test, propose based on SolidWorks,
The determination method of the work of numerical control machine plane Instantaneous center of ADAMS passes through all instantaneous progress Abbe arms determined
Accurately calculate, and then improve numerically-controlled machine tool composition error modeling, improve machine tool error compensation precision.
Summary of the invention
(1) the technical issues of solving
Technical problem to be solved by the invention is to provide a kind of work of numerical control machine based on SolidWorks, ADAMS
The determination method of plane Instantaneous center.It can accurately determine out numerically-controlled machine tool using ADAMS Analytical Methods of Kinematics
The position of real-time Instantaneous center of working face during different motion, does not need to determine by cumbersome experiment,
By carrying out accurately calculating for corresponding Abbe arm to all instantaneous determinations of numerical control machine slide rail system working face, thus real
Instantaneous center is added in present numerically-controlled machine tool composition error modeling, improves modeling, improves the error compensation precision of lathe.
(2) technical solution
The technical solution for realizing the aim of the invention is as follows:
In order to achieve the above object, the present invention is achieved by the following technical programs.Based on SolidWorks, ADAMS
The determination method of work of numerical control machine plane Instantaneous center, includes the following steps:
Step 1: numerical control machine slide rail system workbench simplified model is established in SolidWorks environment, and
Numerically-controlled machine tool overall structure is established in SolidWorks；
Step 2: the numerical control machine slide rail system workbench simplified model established in SolidWorks is saved as * .x_t
Format, imported into ADAMS dynamics simulation environment.Set environment parameter first, geometric dimension, the material ginseng of workbench
Number；Set contact of the guide track system workbench with ground in ADAMS and add fixed constraint, sliding block on the table with lead
A power is loaded between rail makes it generate irregular collision；Then apply a driving force respectively on two guide rails of workbench,
Move workbench accordingly along guide rail.
Step 3: the guide track system kinetic coordinate system of platen is established, with the straight line where workbench lower floor guide rail
It is that ordinate establishes coordinate system perpendicular to lower floor guide rail direction, gravity direction is the negative direction of machine Z-axis for abscissa.It is transporting
The two o'clock on different directions is selected to carry out dynamics simulation post-processing, the two o'clock that will be obtained in dynamic guide rail bench Different Plane
Speed and displacement data saved with the format of .xls.
Step 4: according to the instantaneous law theory of rigid body in plane motion velocity analysis, on workbench obtained in step 3
Two spot speed and displacement data carry out calculating analysis, are digitally controlled the position of different Instantaneous centers in lathe working face.
Further, the numerical control machine slide rail system workbench simplified model, in modeling process, on guide rail
Be loaded with by laser interferometer measurement go out thin tail sheep error and small angular motion error.
Further, a power is loaded between the sliding block and guide rail on the table makes it generate irregular touch
Velocity magnitude and direction of the two o'clock hit, therefore selected on the table during working table movement are time-varying.
Further, the instantaneous law theory according to rigid body in plane motion velocity analysis, two o'clock p and the q speed of selection
Respectively VpAnd Vq.It crosses the two o'clock and makees vertical line respectively, the intersection point of two vertical lines is the Instantaneous center point of working face.
Further, the calculated transient motion of two o'clock selected in the machine tool guideway system workbench Different Plane
Center is divided into that beat is instantaneous, pitching is instantaneous, rolling is instantaneous.
(3) beneficial effect
(1) present invention completes in SolidWorks to numerical control machine slide rail system workbench and overall structure assembly
Precise match, can be improved assembly precision, reduce error.
(2) in ADAMS dynamics simulation, fixed constraint is set to numerical control machine slide rail system workbench and ground, it is right
Two guide rails in each direction set driving, set the corresponding speed of service, the actual moving process of simulated machine tool workbench.
(3) it is based on Post Processor ADAMS 2015, the speed and displacement data of two o'clock p, q on workbench can be with
When rapidly analysis meter calculating is moved along certain direction, the specific location of the Instantaneous center of working face is instantaneous using this
The centre of motion carries out accurately calculating for Abbe arm, improves the modeling of numerically-controlled machine tool composition error, to improve machine tool error compensation effect
Fruit.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, with reference to the accompanying drawings and detailed description to this
Invention is described in further detail.
Fig. 1 is numerically-controlled machine tool overall structure diagram；
Fig. 2 is the structural schematic diagram of numerical control machine slide rail system workbench；
Fig. 3 is a kind of work of numerical control machine plane transient motion based on SolidWorks, ADAMS involved in the present invention
Step flow chart in the determination method at center.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with relevant drawings, with number
The beat for controlling lathe X direction guiding rail system is instantaneous, for pitching is instantaneous, rolling is instantaneous, to the technical solution referred in the present invention into
The more clear detailed description of row.Obviously, described embodiment is a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Fig. 1 is the schematic perspective view at general NC machine tooling center, and Fig. 2 is numerical control machine slide rail system workbench
Structural schematic diagram, Fig. 3 be a kind of work of numerical control machine plane wink based on SolidWorks, ADAMS according to the present invention
When the centre of motion determination method in step flow chart.Numerically-controlled machine tool is by lathe bed 1, the Y-axis guide rail slide carriage that is mounted on lathe bed
2, the X-axis guide rail slide carriage 3 being mounted on Y-axis guide rail slide carriage 2, the workbench 4 being mounted on X-axis guide rail slide carriage 3 is mounted on lathe bed
Z axis guide rail slide carriage 5 on 1 and the main shaft 6 being mounted on Z axis guide rail slide carriage 5 are constituted.To be moved along workbench X direction guiding rail
When the instantaneous example that is determined as of working face beat be described in detail.
The Solid Works simplified model of numerical control machine slide rail system workbench is imported ADAMS working environment by step 1
In, by taking practical BV75 numerically-controlled machine tool as an example, set guide track system workbench each section material parameter.
Step 2 sets fixed constraint to machine tool guideway system workbench and ground, in the X-direction of upper layer in ADAMS
Two apply a power between guide rail and sliding block and move along the rail it during generate collision, while on two guide rails point
It Shi Jia not driving force.
Step 3, when moving along workbench X direction guiding rail, the beat of work of numerical control machine plane is instantaneous to be located on the face XOY.?
Two point p and q not on the same line are selected on X direction guiding rail slide carriage, one speed of setting runs guide rail bench, operational process
Middle speed and displacement data are time-varying, in Post Processor ADAMS post-processing, save to obtain in the form of .xls
Two o'clock speed and displacement data.
Step 4, with the instantaneous theory of Motion of Rigid Body, by p, it is instantaneous that the speed of q two o'clock calculates different moments beat
Position, and coordinate system is established according to corresponding displacement data and is intuitively shown.
Step 5 repeats step 3 and step 4, obtain that pitching when moving along X direction guiding rail is instantaneous and rolling is instantaneous and
The beat of lathe working face is instantaneous when moving along Y-direction, Z-direction guide rail, pitching is instantaneous and rolling is instantaneous.Wherein, along X to moving
When, the instantaneous XOZ plane positioned at its slide carriage direction of pitching, the instantaneous YOZ plane positioned at its slide carriage direction of rolling；It is moved along Y-direction
When, the instantaneous XOY plane positioned at its slide carriage direction of beat, the instantaneous YOZ plane positioned at its slide carriage direction of pitching, the instantaneous position of rolling
XOZ plane in its slide carriage direction；When being moved along Z-direction guide rail, the instantaneous XOZ plane positioned at its slide carriage direction of beat, pitching wink
The heart is located at the YOZ plane in its slide carriage direction, the instantaneous XOY plane positioned at its slide carriage direction of rolling.
Step 6, according to above-mentioned steps one to step 5, in the transient motion for finally determining work of numerical control machine plane
The specific location of the heart improves the modeling of numerically-controlled machine tool composition error, using accurately calculating for the corresponding Abbe arm of each instantaneous progress with this
To improve machine tool error accuracy compensation.
Claims (3)
1. the determination method of the work of numerical control machine plane Instantaneous center based on SolidWorks, ADAMS, feature exist
In, comprising the following steps:
Step 1: numerical control machine slide rail system workbench simplified model is established in SolidWorks environment, and
Numerically-controlled machine tool overall structure is established in SolidWorks；
Step 2: the numerical control machine slide rail system workbench simplified model established in SolidWorks to be saved as to the lattice of * .x_t
Formula is imported into ADAMS dynamics simulation environment.Set environment parameter first, geometric dimension, the material parameter of workbench；?
Set contact of the guide track system workbench with ground in ADAMS and add fixed constraint, sliding block and guide rail on the table it
Between one power of load so that its is generated irregular collision；Then apply a driving force respectively on two guide rails of workbench, make work
Make platform and is moved accordingly along guide rail.
It is cross with the straight line where workbench lower floor guide rail Step 3: establishing the guide track system kinetic coordinate system of platen
Coordinate is that ordinate establishes coordinate system perpendicular to lower floor guide rail direction, and gravity direction is the negative direction of machine Z-axis.In movement
The two o'clock on different directions is selected to carry out dynamics simulation post-processing in guide rail bench Different Plane, by the speed of obtained two o'clock
Degree and displacement data are saved with the format of .xls.
Step 4: according to the instantaneous law theory of rigid body in plane motion velocity analysis, to two o'clock on workbench obtained in step 3
Speed and displacement data carry out calculating analysis, are digitally controlled the position of different Instantaneous centers in lathe working face.
2. the reason of the work of numerical control machine plane Instantaneous center based on SolidWorks, ADAMS as described in claim 1
By the method for determination, it is characterised in that:
The numerical control machine slide rail system workbench simplified model is loaded on guide rail by laser in modeling process
The thin tail sheep error and small angular motion error that interferometer measurement goes out.
A power is loaded between the sliding block and guide rail on the table makes it generate irregular collision, therefore in workbench
Velocity magnitude and direction of the two o'clock of upper selection during working table movement are time-varying.
Two o'clock p and the q speed of the instantaneous law theory according to rigid body in plane motion velocity analysis, selection is respectively VpAnd Vq.It crosses
The two o'clock makees vertical line respectively, and the intersection point of two vertical lines is the Instantaneous center point of working face.
3. the work of numerical control machine plane Instantaneous center based on SolidWorks, ADAMS as claimed in claim 1 or 2
Determination method, it is characterised in that:
The calculated Instantaneous center of two o'clock p and q selected in the machine tool guideway system workbench Different Plane is divided into
Beat is instantaneous, pitching is instantaneous, rolling is instantaneous.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110411347A (en) * | 2019-08-13 | 2019-11-05 | 安徽理工大学 | The detection device and its detection method of numerically controlled machine instantaneous centre of rotation |
| CN111581716A (en) * | 2020-04-07 | 2020-08-25 | 北京科技大学 | Simulation method for dynamic performance of loop accelerated loading device |
| CN116197736A (en) * | 2023-05-06 | 2023-06-02 | 山东海鲲数控设备有限公司 | Detection device for instantaneous rotation center of workbench of numerical control machine tool |
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| CN105654836A (en) * | 2016-02-01 | 2016-06-08 | 北京理工大学 | Comprehensive simulation method for spherical robot based on SolidWorks and ADAMS environment |
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| CN110411347A (en) * | 2019-08-13 | 2019-11-05 | 安徽理工大学 | The detection device and its detection method of numerically controlled machine instantaneous centre of rotation |
| CN111581716A (en) * | 2020-04-07 | 2020-08-25 | 北京科技大学 | Simulation method for dynamic performance of loop accelerated loading device |
| CN111581716B (en) * | 2020-04-07 | 2022-05-06 | 北京科技大学 | Simulation method for dynamic performance of loop accelerated loading device |
| CN116197736A (en) * | 2023-05-06 | 2023-06-02 | 山东海鲲数控设备有限公司 | Detection device for instantaneous rotation center of workbench of numerical control machine tool |
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