CN108168499A - A kind of measuring for the coaxiality error method and measuring system - Google Patents
A kind of measuring for the coaxiality error method and measuring system Download PDFInfo
- Publication number
- CN108168499A CN108168499A CN201711461191.1A CN201711461191A CN108168499A CN 108168499 A CN108168499 A CN 108168499A CN 201711461191 A CN201711461191 A CN 201711461191A CN 108168499 A CN108168499 A CN 108168499A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- shaft
- fitting
- data acquisition
- acquisition system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
Abstract
This application discloses a kind of measuring for the coaxiality error method and measuring systems, wherein, the measuring for the coaxiality error method is when measuring coaxiality error, only need the measurement of the position relationship data acquisition system by laser measuring equipment realization shaft-like workpiece different cross section, shaft-like workpiece is measured without the amount instrument and contact formula weight instrument of customization, not only avoid the possibility that shaft-like workpiece is scratched in measurement process, and measurement process is easy, so as to improve the measurement efficiency of the coaxiality error of shaft-like workpiece.
Description
Technical field
This application involves shaft-like workpiece geometric measurement technical fields, are surveyed more specifically to a kind of coaxiality error
Amount method and measuring system.
Background technology
In mechanical industry precision manufactureing field, the processing of shaft-like workpiece and detection are one and important and complicated ask always
Topic.For certain angle, the accuracy of detection in shaft-like workpiece manufacturing process inversely constrains machining accuracy.Improve its online inspection
Survey ability and then guarantee processing quality, have great importance for the development for pushing shaft-like workpiece manufacture level.
According to incompletely statistics, China produces the total amount of axial workpiece per year at 1,000,000,000 or so, but particularly high in international market
Competitiveness is extremely limited in the axis class market of end, and demand of the industry integrally to advanced quality testing means is very urgent.At present,
The manufacturer of shaft-like workpiece is in the coaxiality error for detecting shaft-like workpiece, it usually needs is customized for specific shaft-like workpiece
Special amount instrument, not only measurement process is cumbersome, and it also requires frequently replacing survey tool in measurement process, is especially using
Also there is the possibility for scratching shaft-like workpiece when contact formula weight instrument measures, the degree of automation is relatively low, restricts shaft-like workpiece
Coaxiality error measurement efficiency further promotion.
Invention content
In order to solve the above technical problems, this application provides a kind of measuring for the coaxiality error method and measuring system, with reality
Now promote the purpose of the measurement efficiency of the coaxiality error of shaft-like workpiece.
To realize the above-mentioned technical purpose, the embodiment of the present application provides following technical solution：
A kind of measuring for the coaxiality error method realizes, the laser measuring equipment includes based on laser measuring equipment：Control
Equipment, stepping equipment, slewing, angular coding equipment and measurement device of diameter；Wherein, the slewing is used for installation axle
Class workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angular coding equipment is being revolved for defining shaft-like workpiece
Relative zero during transhipment is dynamic, and the angle pulse according to control device transmission acquires the shaft-like workpiece in each rotation
Angle-data corresponding to angle；The stepping equipment is used for the stepping pulse signal transmitted according to the control device, drives
Measurement device of diameter is moved along the extending direction of shaft-like workpiece, so that the measurement device of diameter measures shaft-like workpiece different cross section
First end point position and the second endpoint location at position；The control device is used to send step-by-step impulse to the stepping equipment
Signal sends angle pulse signal to the slewing, to control the movement of the stepping equipment, slewing, and receives
The data that the angular coding equipment and measurement device of diameter measure obtain shaft-like workpiece section in different rotary angle and its institute
The position relationship data acquisition system of corresponding radial direction endpoint；The measuring for the coaxiality error method includes：
At the sectional position of the shaft-like workpiece, obtain with the section in different rotary angle and its corresponding diameter
To the position relationship data acquisition system of endpoint；
According to the position relationship data acquisition system, the point midway that fitting obtains the position relationship data acquisition system is corresponding
It is fitted sine curve；
According to the sinusoidal crest location of the fitting and wave trough position, calculate and obtain the center of circle corresponding with the section
Jerk value；
According to the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, the shaft-like workpiece is determined
Coaxiality error.
Optionally, it is described according to the sinusoidal crest location of the fitting and wave trough position, it calculates and obtains and described section
The corresponding center of circle jerk value in face includes：
Obtain the value of the sinusoidal crest location of the fitting and wave trough position；
The value of the sinusoidal crest location of the fitting and wave trough position is substituted into preset formula, calculate obtain with
The corresponding center of circle jerk value in the section；
The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal wave crest position
The value put, Y2 represent to be fitted the value of sinusoidal wave trough position.
Optionally, it is described according to the section in different rotary angle and its position relationship number of corresponding radial direction endpoint
According to set, the corresponding fitting sine curve of point midway that fitting obtains the position relationship data acquisition system includes：
According to the first end point position of the position relationship data acquisition system of acquisition and the second endpoint location, the midpoint of the two is calculated
Point midway as the position relationship data acquisition system；
According to the point midway of the position relationship data acquisition system, it is fitted in acquisition and the position relationship data acquisition system
The corresponding fitting sine curve in point position.
Optionally, the corresponding center of circle jerk value in multiple and different sectional positions according to the shaft-like workpiece, determines institute
The coaxiality error for stating shaft-like workpiece includes：
By the maximum value in the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, as the axis
The coaxiality error of class workpiece.
A kind of measuring for the coaxiality error system realizes, the laser measuring equipment includes based on laser measuring equipment：Control
Equipment, stepping equipment, slewing, angular coding equipment and measurement device of diameter；Wherein, the slewing is used for installation axle
Class workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angular coding equipment is being revolved for defining shaft-like workpiece
Relative zero during transhipment is dynamic, and the angle pulse according to control device transmission acquires the shaft-like workpiece in each rotation
Angle-data corresponding to angle；The stepping equipment is used for the stepping pulse signal transmitted according to the control device, drives
Measurement device of diameter is moved along the extending direction of shaft-like workpiece, so that the measurement device of diameter measures shaft-like workpiece different cross section
First end point position and the second endpoint location at position；The control device is used to send step-by-step impulse to the stepping equipment
Signal sends angle pulse signal to the slewing, to control the movement of the stepping equipment, slewing, and receives
The data that the angular coding equipment and measurement device of diameter measure obtain shaft-like workpiece section in different rotary angle and its institute
The position relationship data acquisition system of the position relationship data acquisition system of corresponding radial direction endpoint；The measuring for the coaxiality error system packet
It includes：
Data acquisition module, at the sectional position of the shaft-like workpiece, obtaining and the position relationship data set
It closes；
Curve fitting module, for according to the position relationship data acquisition system, fitting to obtain the position relationship data set
The corresponding fitting sine curve of point midway of conjunction；
First computing module, for according to the sinusoidal crest location of the fitting and wave trough position, calculate obtain with
The corresponding center of circle jerk value in the section；
Second computing module, for the corresponding center of circle jerk value in multiple and different sectional positions according to the shaft-like workpiece,
Determine the coaxiality error of the shaft-like workpiece.
Optionally, first computing module includes：
Reading cell, for obtaining the value of the sinusoidal crest location of the fitting and wave trough position；
Computing unit, for the value of the sinusoidal crest location of the fitting and wave trough position to be substituted into preset formula
In, it calculates and obtains the center of circle corresponding with section jerk value；
The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal wave crest position
The value put, Y2 represent to be fitted the value of sinusoidal wave trough position.
Optionally, the curve fitting module includes：
Mid-point computation unit, for the first end point position and the second endpoint position of the position relationship data acquisition system according to acquisition
It puts, calculates point midway of the midpoint of the two as the position relationship data acquisition system；
Fitting unit, for the point midway according to the position relationship data acquisition system, fitting is obtained closes with the position
It is the corresponding fitting sine curve of point midway of data acquisition system.
Optionally, second computing module is specifically used for, and multiple and different sectional positions of the shaft-like workpiece are corresponded to
Center of circle jerk value in maximum value, the coaxiality error as the shaft-like workpiece.
It can be seen from the above technical proposal that the embodiment of the present application provides a kind of measuring for the coaxiality error method and measurement
System, wherein, the measuring for the coaxiality error method is right in different rotary angle and its institute in acquisition and the section of shaft-like workpiece
The position relationship data acquisition system for the radial direction endpoint answered, according to the position relationship data acquisition system, fitting obtains the position relationship
The corresponding fitting sine curve of point midway of data acquisition system, the fitting sine curve correspond to the fitting circle at the sectional position
The center of circle different rotary angle around shaft-like workpiece common reference axis movement locus, therefore, can be according to the fitting
Sinusoidal crest location and wave trough position calculate the center of circle jerk value for obtaining fitting circle corresponding with the sectional position；Finally
By comparing the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, the coaxial of the shaft-like workpiece is determined
Spend error.The measuring for the coaxiality error method is when measuring coaxiality error, it is only necessary to realize axis by laser measuring equipment
The measurement of the position relationship data acquisition system of class workpiece different cross section, without customization amount instrument and contact formula weight instrument to axis class work
Part measures, and the possibility that shaft-like workpiece is scratched in measurement process is not only avoided, and measurement process is easy, so as to be promoted
The measurement efficiency of the coaxiality error of shaft-like workpiece.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or it will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow diagram of a kind of measuring for the coaxiality error method that one embodiment of the application provides；
Fig. 2 is the schematic diagram of the frame structure of a kind of laser measuring equipment that one embodiment of the application provides；
Fig. 3 is the structure diagram of a kind of measurement device of diameter that one embodiment of the application provides；
Fig. 4 is the schematic diagram of measurement device of diameter calibration process that one embodiment of the application provides；
Fig. 5 is the schematic diagram of measurement device of diameter measurement process that one embodiment of the application provides；
Fig. 6 is the model schematic of a kind of measurement device of diameter measurement data that one embodiment of the application provides；
Fig. 7 is the cross-sectional view of a kind of shaft-like workpiece that one embodiment of the application provides；
Fig. 8 is a kind of signal that common reference axis is established by extraction center line that one embodiment of the application provides
Figure；
Fig. 9 (a) is the schematic diagram of a kind of datum axis that one embodiment of the application provides；
Fig. 9 (b) is the relation schematic diagram of a kind of datum axis and extraction center line that one embodiment of the application provides；
Figure 10 is the flow diagram of a kind of measuring for the coaxiality error method that another embodiment of the application provides；
Figure 11 is the flow diagram of a kind of measuring for the coaxiality error method that another embodiment of the application provides；
Figure 12 is the schematic diagram of point midway in a kind of position relationship data acquisition system that one embodiment of the application provides；
Figure 13 is the flow diagram of a kind of measuring for the coaxiality error method that the further embodiment of the application provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, the technical solution in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall in the protection scope of this application.
The embodiment of the present application provides a kind of measuring for the coaxiality error method, as shown in Figure 1, real based on laser measuring equipment
Existing, the laser measuring equipment includes：Control device, stepping equipment, slewing, angular coding equipment and diameter measurement are set
It is standby；Wherein, the slewing is for installing shaft-like workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angle
Degree encoding device is used to define relative zero of the shaft-like workpiece in rotary motion, and according to the angle of control device transmission
Shaft-like workpiece described in pulse collection is in the angle-data corresponding to each rotation angle；The stepping equipment is used for according to the control
The stepping pulse signal of control equipment transmission, drives measurement device of diameter to be moved along the extending direction of shaft-like workpiece, so that described straight
Diameter measuring apparatus measures the first end point position and the second endpoint location at shaft-like workpiece different cross section position；The control device
For sending stepping pulse signal to the stepping equipment, angle pulse signal is sent to the slewing, with described in control
The movement of stepping equipment, slewing, and the angular coding equipment and the data of measurement device of diameter measurement are received, obtain axis
Class workpiece interface is in different rotary angle and its position relationship data of the position relationship data acquisition system of corresponding radial direction endpoint
Set；The measuring for the coaxiality error method includes：
S101：At the sectional position of the shaft-like workpiece, the section is obtained in different rotary angle and its corresponding
Radial direction endpoint position relationship data acquisition system；
S102：According to the position relationship data acquisition system, fitting obtains the point midway of the position relationship data acquisition system
Corresponding fitting sine curve；
S103：According to the sinusoidal crest location of the fitting and wave trough position, it is corresponding with the section to calculate acquisition
Center of circle jerk value；
S104：According to the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, the axis class is determined
The coaxiality error of workpiece.
It should be noted that the laser measuring equipment mainly includes control device, stepping equipment, slewing, angle
Encoding device and measurement device of diameter, with reference to figure 2, the shaft-like workpiece is mounted on slewing, by slewing band moving axis
Class workpiece rotates in the plane (preset level face) perpendicular to paper, and the angular coding equipment exists for defining shaft-like workpiece
Relative zero in rotary motion, and the angle pulse according to control device transmission acquires shaft-like workpiece in each rotation angle institute
Corresponding test data；The stepping equipment is used to that measurement device of diameter to be driven to move along the extending direction of shaft-like workpiece, so that
The measurement device of diameter can measure the first end point position and the second endpoint location at shaft-like workpiece different cross section position；Institute
Control device is stated for controlling the movement of the stepping equipment, slewing, receives the angular coding equipment and diameter measurement
The data of device measuring, obtain the position relationship data acquisition system in shaft-like workpiece section, and the label 10 in Fig. 2 represents that the rotation is set
Standby, 20 represent the measurement device of diameter, and 30 represent the stepping equipment, and 40 represent the angular coding equipment, and 50 represent institute
Control device is stated, WP represents the shaft-like workpiece.
Optionally, the stepping equipment can be made of stepper motor, air-float guide rail and grating scale, to combine diameter measurement
Equipment achievees the purpose that program-controlled step-scan；The measurement device of diameter can be laser alignment measurement ruler；The slewing
It can be direct current torque motor；The angular coding equipment can be extended-range encoder.
When the direct current measuring devices are laser alignment measurement ruler, the structure of the measurement device of diameter as shown in figure 3,
Mainly include two measuring scales being oppositely arranged, each measuring scale includes laser-emitting face and a laser pick-off face, and laser connects
Receipts face is used to receive the laser of laser-emitting face outgoing, and when having object being measured among two measuring scales, laser-emitting face goes out
The laser penetrated is blocked, and laser pick-off face can obtain the endpoint location of object being measured by the part being blocked, and diameter is surveyed
Amount equipment needs to carry out relative calibration process before the use, with reference to figure 4, by the use of measuring grade standard cylinder as benchmark to straight
Diameter measuring apparatus is calibrated；In figs. 3 and 4, two measuring scales are respectively from laser-emitting face shoot laser, the grade that is measured mark
The laser pick-off face that the laser that director circle cylinder blocks can not be tested gage is received, and the survey of diameter is realized by the part being blocked
Amount.In calibration process, traverse measurement ruler first is needed to acquire measurement data to metering grade standard cylinder in the calibration mode,
The diameter reference of the opposite difference value of zero of standard cylinder diameter and zero point of reference frame position can be obtained.
With reference to figure 5 when being measured using measurement device of diameter, the section circle contour of the shaft-like workpiece actually measured is compared
Standard cylinder is changed.The first end point position and the second endpoint position of the section circle of tested shaft-like workpiece can be measured
It puts, and can be calculated by specified calculation formula and provide measured section diameter of a circle measured value, while provide diameter two-end-point
The coordinate variation of relative standard's cylinder in the Y direction, in Fig. 3-Fig. 5, label 21 represents the laser-emitting face of measuring scale,
22 represent the laser pick-off face of measuring scale, and in figures 4 and 5, -0 ,+0 represents that in calibration process standard cylinder is at two
The endpoint location of measuring scale, i.e. first end point position and the second endpoint location, 0 represents that in calibration process standard cylinder is fixed
Target zero-bit, L0 represent the diameter of standard cylinder, and L1 represents the diameter of tested cylinder.
In practical measurement process, data model with reference to figure 6, wherein, angle pulse is used to control the slewing
Rotation, for zero pulse for recording whether shaft-like workpiece rotates a circle, obtained data are under different angle pulses, directly
First end point position, the second endpoint location and the diameter length for the tested shaft-like workpiece that diameter measuring apparatus obtains, wherein, midpoint position
Putting can be by being calculated.
The principle for measuring the definition of concentricity and the application concentricity is illustrated below：
With reference to figure 7, shaft-like workpiece can be considered as to be made of the cylinder of multiple and different diameters, these cylinders constitute more
A step, the cylinder for forming each step have the datum axis of oneself, and the axis that the cylinder of these steps collectively forms
Class workpiece tool there are one common reference axis, when in shaft-like workpiece there are during coaxiality error, the datum axis of each cylinder
With the common reference axis of shaft-like workpiece and be not arranged on the same straight line, the datum axis of each cylinder and the public affairs of shaft-like workpiece
The coaxiality error of the deviation, the referred to as cylinder of datum axis altogether.
It is each round with that can include in common reference axis neighborhood according to the lowest area principal in GB/T 1182-2008
The diameter of the smallest circle cylinder of cylinder extraction center line (line in the fitting circle center of circle of several section circles) is as the measured axis
Measuring for the coaxiality error result.Concentricity is measured, to solve two critical issues：
A) the common reference axis of shaft-like workpiece is determined；
B) the extraction center line of each cylinder is determined.
GB/T 18780.2-2003 are provided, public when establishing common reference axis by two or more extraction center line
Datum axis is the fitting axis common to these extraction center lines altogether, as shown in Figure 8.
When the datum axis of each step is established by extraction center line, datum axis is straight for the fitting of the extraction center line
Line, as shown in Fig. 9 (a).Extraction center line is the track for extracting each cross section extraction profile center of revolving body, and each cross section is vertical
In the axis of fitting revolving body obtained by extracting surface, as shown in Fig. 9 (b).The center of extraction profile refers to the plan of the profile
Close the center of circle of circle.
In the present embodiment, we are first measured at multiple and different sectional positions of shaft-like workpiece, corresponding with sectional position
Position relationship data acquisition system, then according to the position relationship data acquisition system, fitting obtains the position relationship data acquisition system
The corresponding fitting sine curve of point midway, the fitting sine curve obtained herein correspond to the fitting circle at the sectional position
The center of circle different rotary angle around shaft-like workpiece common reference axis movement locus, therefore, we can be according to this
Sinusoidal crest location and wave trough position are fitted, calculates and obtains the center of circle corresponding with sectional position jerk value；Finally lead to
The corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece is crossed, determines the concentricity of the shaft-like workpiece
Error.The measuring for the coaxiality error method is when measuring coaxiality error, it is only necessary to realize axis class by laser measuring equipment
The measurement of the position relationship data acquisition system of workpiece different cross section, without customization amount instrument and contact formula weight instrument to shaft-like workpiece
It measures, the possibility that shaft-like workpiece is scratched in measurement process is not only avoided, and measurement process is easy, so as to improve
The measurement efficiency of the coaxiality error of shaft-like workpiece.
It is as shown in Figure 10, described according to the plan in one embodiment of the application on the basis of above-described embodiment
Sinusoidal crest location and wave trough position are closed, the acquisition center of circle corresponding with section jerk value is calculated and includes：
S1031：Obtain the value of the sinusoidal crest location of the fitting and wave trough position；
S1032：The value of the sinusoidal crest location of the fitting and wave trough position is substituted into preset formula, is calculated
Obtain the center of circle corresponding with section jerk value；
The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal wave crest position
The value put, Y2 represent to be fitted the value of sinusoidal wave trough position.
On the basis of above-described embodiment, in another embodiment of the application, as shown in figure 11, described in the basis
Position relationship data acquisition system, fitting obtain the corresponding fitting sine curve packet of point midway of the position relationship data acquisition system
It includes：
S1021：According to the first end point position of the position relationship data acquisition system of acquisition and the second endpoint location, described in calculating
The point midway of position relationship data acquisition system；
S1022：According to the point midway of the position relationship data acquisition system, fitting obtains and the position relationship data set
The corresponding fitting sine curve of point midway of conjunction.
It should be noted that according to the first end point position of the position relationship data acquisition system of acquisition and the second endpoint location,
The signal of the point midway of the position relationship data acquisition system obtained is calculated with reference to figure 12, first end is measured at multiple rotation angles
Behind point position and the second endpoint location, first end point position and the second endpoint location to every group carry out asking respectively the meter at midpoint
It calculates, obtains the point midway of every group of first end point position and the second endpoint location, label DP1 and DP2 represent the respectively in Figure 12
End point and the second endpoint, MP represent to calculate the point midway obtained by first end point position and the second endpoint location.
In the point midway according to the position relationship data acquisition system, fitting obtains and the position relationship data acquisition system
During the corresponding fitting sine curve of point midway, using the approximating method of least square method, due to using least square
Method is fitted sinusoidal process and has been well known to those skilled in the art, and this will not be repeated here by the application.
On the basis of above-described embodiment, in another embodiment of the application, as shown in figure 13, described in the basis
The corresponding center of circle jerk value in multiple and different sectional positions of shaft-like workpiece, determines that the coaxiality error of the shaft-like workpiece includes：
S1041：By the maximum value in the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, as
The coaxiality error of the shaft-like workpiece.
According to the definition of concentricity：It can include the minimum of each cylinder extraction center line in common reference axis neighborhood
The diameter of cylinder as the measured axis measuring for the coaxiality error result it is found that being jumped from the corresponding center of circle in more sectional positions
Coaxiality error of the maximum value as the shaft-like workpiece is chosen in momentum, closer to the true concentricity of the shaft-like workpiece
Error.
In conclusion the embodiment of the present application provides a kind of measuring for the coaxiality error method, the measuring for the coaxiality error
Method is obtaining the section with shaft-like workpiece in different rotary angle and its position relationship data set of corresponding radial direction endpoint
It closes, according to the position relationship data acquisition system, fitting obtains the corresponding fitting of point midway of the position relationship data acquisition system
Sine curve, the center of circle which corresponds to the fitting circle at the sectional position surround axis class in different rotary angle
The movement locus of the common reference axis of workpiece, therefore, can according to the sinusoidal crest location of the fitting and wave trough position,
Calculate the center of circle jerk value for obtaining fitting circle corresponding with the sectional position；Finally by the multiple and different of the shaft-like workpiece
The corresponding center of circle jerk value in sectional position determines the coaxiality error of the shaft-like workpiece.The measuring for the coaxiality error method
When measuring coaxiality error, it is only necessary to the position relationship data set of shaft-like workpiece different cross section is realized by laser measuring equipment
The measurement of conjunction measures shaft-like workpiece without the amount instrument and contact formula weight instrument of customization, not only avoids and measuring
The possibility of shaft-like workpiece is scratched in journey, and measurement process is easy, so as to improve the measurement of the coaxiality error of shaft-like workpiece
Efficiency.
Measuring for the coaxiality error system provided by the embodiments of the present application is described below, concentricity described below is missed
Difference measurements system can correspond reference with above-described measuring for the coaxiality error method.
A kind of measuring for the coaxiality error system realizes, the laser measuring equipment includes based on laser measuring equipment：Control
Equipment, stepping equipment, slewing, angular coding equipment and measurement device of diameter；Wherein, the slewing is used for installation axle
Class workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angular coding equipment is being revolved for defining shaft-like workpiece
Relative zero during transhipment is dynamic, and the angle pulse according to control device transmission acquires the shaft-like workpiece in each rotation
Angle-data corresponding to angle；The stepping equipment is used for the stepping pulse signal transmitted according to the control device, drives
Measurement device of diameter is moved along the extending direction of shaft-like workpiece, so that the measurement device of diameter measures shaft-like workpiece different cross section
First end point position and the second endpoint location at position；The control device is used to send step-by-step impulse to the stepping equipment
Signal sends angle pulse signal to the slewing, to control the movement of the stepping equipment, slewing, and receives
The data that the angular coding equipment and measurement device of diameter measure obtain shaft-like workpiece section in different rotary angle and its institute
The position relationship data acquisition system of the position relationship data acquisition system of corresponding radial direction endpoint；The measuring for the coaxiality error system packet
It includes：
Data acquisition module, at the sectional position of the shaft-like workpiece, obtaining and the position relationship data set
It closes；
Curve fitting module, for according to the position relationship data acquisition system, fitting to obtain the position relationship data set
The corresponding fitting sine curve of point midway of conjunction；
First computing module, for according to the sinusoidal crest location of the fitting and wave trough position, calculate obtain with
The corresponding center of circle jerk value in the section；
Second computing module, for the corresponding center of circle jerk value in multiple and different sectional positions according to the shaft-like workpiece,
Determine the coaxiality error of the shaft-like workpiece.
Optionally, first computing module includes：
Reading cell, for obtaining the value of the sinusoidal crest location of the fitting and wave trough position；
Computing unit, for the value of the sinusoidal crest location of the fitting and wave trough position to be substituted into preset formula
In, it calculates and obtains the center of circle corresponding with section jerk value；
The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal wave crest position
The value put, Y2 represent to be fitted the value of sinusoidal wave trough position.
Optionally, the curve fitting module includes：
Mid-point computation unit, for the first end point position and the second endpoint position of the position relationship data acquisition system according to acquisition
It puts, calculates point midway of the midpoint of the two as the position relationship data acquisition system；
Fitting unit, for the point midway according to the position relationship data acquisition system, fitting is obtained closes with the position
It is the corresponding fitting sine curve of point midway of data acquisition system.
Optionally, second computing module is specifically used for, and multiple and different sectional positions of the shaft-like workpiece are corresponded to
Center of circle jerk value in maximum value, the coaxiality error as the shaft-like workpiece.
In conclusion the embodiment of the present application provides a kind of measuring for the coaxiality error method and measuring system, wherein, it is described
Measuring for the coaxiality error method is being obtained with the section of shaft-like workpiece in different rotary angle and its corresponding radial direction endpoint
Position relationship data acquisition system, according to the position relationship data acquisition system, fitting obtains the midpoint of the position relationship data acquisition system
The corresponding fitting sine curve in position, the fitting sine curve correspond to the center of circle of the fitting circle at the sectional position in different rotations
Gyration, therefore, can be according to the sinusoidal wave crest of the fitting around the movement locus of the common reference axis of shaft-like workpiece
Position and wave trough position calculate the center of circle jerk value for obtaining fitting circle corresponding with the sectional position；Finally by the axis
The corresponding center of circle jerk value in multiple and different sectional positions of class workpiece determines the coaxiality error of the shaft-like workpiece.It is described same
Axis degree error measurement method is when measuring coaxiality error, it is only necessary to realize shaft-like workpiece different cross section by laser measuring equipment
Position relationship data acquisition system measurement, without customization amount instrument and contact formula weight instrument shaft-like workpiece is measured, no
The possibility that shaft-like workpiece is scratched in measurement process is only avoided, and measurement process is easy, so as to improve shaft-like workpiece
The measurement efficiency of coaxiality error.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or using the application.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (8)
- A kind of 1. measuring for the coaxiality error method, which is characterized in that realized based on laser measuring equipment, the laser measuring equipment Including：Control device, stepping equipment, slewing, angular coding equipment and measurement device of diameter；Wherein, the slewing For installing shaft-like workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angular coding equipment is used to define axis Relative zero of the class workpiece in rotary motion, and the angle pulse according to control device transmission acquires the shaft-like workpiece In the angle-data corresponding to each rotation angle；The stepping equipment is used for the step-by-step impulse transmitted according to the control device Signal drives measurement device of diameter to be moved along the extending direction of shaft-like workpiece, so that the measurement device of diameter measures axis class work First end point position and the second endpoint location at part different cross section position；The control device is used to send out to the stepping equipment Stepping pulse signal is sent, angle pulse signal is sent to the slewing, to control the stepping equipment, the fortune of slewing It is dynamic, and the angular coding equipment and the data of measurement device of diameter measurement are received, shaft-like workpiece section is obtained in different rotary The position relationship data acquisition system of angle and its corresponding radial direction endpoint；The measuring for the coaxiality error method includes：At the sectional position of the shaft-like workpiece, obtain with the section in different rotary angle and its corresponding longitudinal end The position relationship data acquisition system of point；According to the position relationship data acquisition system, fitting obtains the corresponding fitting of point midway of the position relationship data acquisition system Sine curve；According to the sinusoidal crest location of the fitting and wave trough position, calculate and obtain center of circle bounce corresponding with the section Amount；According to the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, the coaxial of the shaft-like workpiece is determined Spend error.
- 2. according to the method described in claim 1, it is characterized in that, it is described according to the sinusoidal crest location of the fitting with Wave trough position calculates the acquisition center of circle corresponding with section jerk value and includes：Obtain the value of the sinusoidal crest location of the fitting and wave trough position；The value of the sinusoidal crest location of the fitting and wave trough position is substituted into preset formula, calculate obtain with it is described The corresponding center of circle jerk value in section；The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal crest location Value, Y2 represent to be fitted the value of sinusoidal wave trough position.
- 3. according to the method described in claim 1, it is characterized in that, it is described according to the section in different rotary angle and its institute The position relationship data acquisition system of corresponding radial direction endpoint, the point midway that fitting obtains the position relationship data acquisition system are corresponding Fitting sine curve includes：According to the first end point position of the position relationship data acquisition system of acquisition and the second endpoint location, the midpoint conduct of the two is calculated The point midway of the position relationship data acquisition system；According to the point midway of the position relationship data acquisition system, fitting obtains and the midpoint of position relationship data acquisition system position Put corresponding fitting sine curve.
- 4. according to the method described in claim 1, it is characterized in that, multiple and different sections position according to the shaft-like workpiece Corresponding center of circle jerk value is put, determines that the coaxiality error of the shaft-like workpiece includes：By the maximum value in the corresponding center of circle jerk value in multiple and different sectional positions of the shaft-like workpiece, as the axis class work The coaxiality error of part.
- 5. a kind of measuring for the coaxiality error system, which is characterized in that realized based on laser measuring equipment, the laser measuring equipment Including：Control device, stepping equipment, slewing, angular coding equipment and measurement device of diameter；Wherein, the slewing For installing shaft-like workpiece, and shaft-like workpiece is driven to be rotated in preset level face, the angular coding equipment is used to define axis Relative zero of the class workpiece in rotary motion, and the angle pulse according to control device transmission acquires the shaft-like workpiece In the angle-data corresponding to each rotation angle；The stepping equipment is used for the step-by-step impulse transmitted according to the control device Signal drives measurement device of diameter to be moved along the extending direction of shaft-like workpiece, so that the measurement device of diameter measures axis class work First end point position and the second endpoint location at part different cross section position；The control device is used to send out to the stepping equipment Stepping pulse signal is sent, angle pulse signal is sent to the slewing, to control the stepping equipment, the fortune of slewing It is dynamic, and the angular coding equipment and the data of measurement device of diameter measurement are received, shaft-like workpiece section is obtained in different rotary The position relationship data acquisition system of the position relationship data acquisition system of angle and its corresponding radial direction endpoint；The coaxiality error is surveyed Amount system includes：Data acquisition module, at the sectional position of the shaft-like workpiece, obtaining and the position relationship data acquisition system；Curve fitting module, for according to the position relationship data acquisition system, fitting to obtain the position relationship data acquisition system The corresponding fitting sine curve of point midway；First computing module, for according to the sinusoidal crest location of the fitting and wave trough position, calculate obtain with it is described The corresponding center of circle jerk value in section；Second computing module for the corresponding center of circle jerk value in multiple and different sectional positions according to the shaft-like workpiece, determines The coaxiality error of the shaft-like workpiece.
- 6. system according to claim 5, which is characterized in that first computing module includes：Reading cell, for obtaining the value of the sinusoidal crest location of the fitting and wave trough position；Computing unit, for the value of the sinusoidal crest location of the fitting and wave trough position to be substituted into preset formula, It calculates and obtains the center of circle corresponding with section jerk value；The preset formula is：T=Y1-Y2, wherein, T is center of circle jerk value, and Y1 represents to be fitted sinusoidal crest location Value, Y2 represent to be fitted the value of sinusoidal wave trough position.
- 7. system according to claim 5, which is characterized in that the curve fitting module includes：Mid-point computation unit, first end point position and the second endpoint location for the position relationship data acquisition system according to acquisition, Calculate point midway of the midpoint of the two as the position relationship data acquisition system；Fitting unit, for the point midway according to the position relationship data acquisition system, fitting obtains and the position relationship number According to the corresponding fitting sine curve of the point midway of set.
- 8. system according to claim 5, which is characterized in that second computing module is specifically used for, by the axis class Maximum value in the corresponding center of circle jerk value in multiple and different sectional positions of workpiece, the concentricity as the shaft-like workpiece are missed Difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711461191.1A CN108168499B (en) | 2017-12-28 | 2017-12-28 | Coaxiality error measuring method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711461191.1A CN108168499B (en) | 2017-12-28 | 2017-12-28 | Coaxiality error measuring method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108168499A true CN108168499A (en) | 2018-06-15 |
| CN108168499B CN108168499B (en) | 2020-02-07 |
Family
ID=62519134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711461191.1A Active CN108168499B (en) | 2017-12-28 | 2017-12-28 | Coaxiality error measuring method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108168499B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029269A (en) * | 2018-08-01 | 2018-12-18 | 中国计量大学 | A kind of roller product geometric parameter detection method |
| CN109916343A (en) * | 2019-04-08 | 2019-06-21 | 西安交通大学 | A kind of measurement method and system using single laser sensor detection concentricity |
| CN110567427A (en) * | 2019-09-30 | 2019-12-13 | 潍柴动力股份有限公司 | non-coaxiality detection system, method and processing device |
| CN110779471A (en) * | 2019-12-04 | 2020-02-11 | 北京泓慧国际能源技术发展有限公司 | Coaxiality measuring method, device, equipment and storage medium |
| CN111412865A (en) * | 2020-04-20 | 2020-07-14 | 南京航空航天大学 | Non-contact type coaxiality measuring device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980094A (en) * | 1997-03-28 | 1999-11-09 | Csi Technology, Inc. | Analysis of alignment data |
| CN102239385A (en) * | 2008-12-05 | 2011-11-09 | 特纳瑞斯连接有限责任公司 | Measurement method and device for thread parameters |
| CN102506800A (en) * | 2011-10-24 | 2012-06-20 | 天津职业技术师范大学 | Method for carrying out diameter two-point six-transposition measurement on roundness error of large-scale shaft part and kinematic error of machine tool spindle |
| CN103240592A (en) * | 2013-04-11 | 2013-08-14 | 中国葛洲坝集团股份有限公司 | Method for accurately determining rotating center of turning engine unit of water-turbine generator unit |
| CN204346379U (en) * | 2015-01-26 | 2015-05-20 | 张家港兴业钢管有限公司 | Weldless steel tube internal-and external diameter measuring instrument |
| RU2561018C1 (en) * | 2014-07-18 | 2015-08-20 | Открытое акционерное общество "Научно-исследовательский институт оптико-электронного приборостроения" (ОАО "НИИ ОЭП") | Interferometric method of adjusting two-mirror lens with aspherical elements |
| CN106017392A (en) * | 2016-07-21 | 2016-10-12 | 赵艳丽 | Method for detecting circular cross section contour and coaxiality of electric iron tower steel pipe from multiple points simultaneously |
-
2017
- 2017-12-28 CN CN201711461191.1A patent/CN108168499B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980094A (en) * | 1997-03-28 | 1999-11-09 | Csi Technology, Inc. | Analysis of alignment data |
| CN102239385A (en) * | 2008-12-05 | 2011-11-09 | 特纳瑞斯连接有限责任公司 | Measurement method and device for thread parameters |
| CN102506800A (en) * | 2011-10-24 | 2012-06-20 | 天津职业技术师范大学 | Method for carrying out diameter two-point six-transposition measurement on roundness error of large-scale shaft part and kinematic error of machine tool spindle |
| CN103240592A (en) * | 2013-04-11 | 2013-08-14 | 中国葛洲坝集团股份有限公司 | Method for accurately determining rotating center of turning engine unit of water-turbine generator unit |
| RU2561018C1 (en) * | 2014-07-18 | 2015-08-20 | Открытое акционерное общество "Научно-исследовательский институт оптико-электронного приборостроения" (ОАО "НИИ ОЭП") | Interferometric method of adjusting two-mirror lens with aspherical elements |
| CN204346379U (en) * | 2015-01-26 | 2015-05-20 | 张家港兴业钢管有限公司 | Weldless steel tube internal-and external diameter measuring instrument |
| CN106017392A (en) * | 2016-07-21 | 2016-10-12 | 赵艳丽 | Method for detecting circular cross section contour and coaxiality of electric iron tower steel pipe from multiple points simultaneously |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029269A (en) * | 2018-08-01 | 2018-12-18 | 中国计量大学 | A kind of roller product geometric parameter detection method |
| CN109029269B (en) * | 2018-08-01 | 2020-08-04 | 中国计量大学 | Geometric parameter detection method for roller product |
| CN109916343A (en) * | 2019-04-08 | 2019-06-21 | 西安交通大学 | A kind of measurement method and system using single laser sensor detection concentricity |
| CN110567427A (en) * | 2019-09-30 | 2019-12-13 | 潍柴动力股份有限公司 | non-coaxiality detection system, method and processing device |
| CN110567427B (en) * | 2019-09-30 | 2021-05-18 | 潍柴动力股份有限公司 | Non-coaxiality detection system, method and processing device |
| CN110779471A (en) * | 2019-12-04 | 2020-02-11 | 北京泓慧国际能源技术发展有限公司 | Coaxiality measuring method, device, equipment and storage medium |
| CN110779471B (en) * | 2019-12-04 | 2021-06-18 | 北京泓慧国际能源技术发展有限公司 | Coaxiality measuring method, device, equipment and storage medium |
| CN111412865A (en) * | 2020-04-20 | 2020-07-14 | 南京航空航天大学 | Non-contact type coaxiality measuring device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108168499B (en) | 2020-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108168499A (en) | A kind of measuring for the coaxiality error method and measuring system | |
| CN108151669A (en) | A kind of method of measuring roundness error and measuring system | |
| US6289600B1 (en) | Non-contact measuring device | |
| CN101561349B (en) | Large gear detecting method and detecting device | |
| CN102937409B (en) | Polar coordinate gear measurement center and zero calibrating method thereof | |
| CN105277129B (en) | A kind of contactless gauge measuring system of laser range sensor dynamic | |
| CN102252626B (en) | Device for detecting effective inner diameter of pipeline | |
| CN202083309U (en) | Automatic calibrating apparatus of wide-range general calipers | |
| AU2012360750A1 (en) | Device for measuring an internal or external profile of a tubular component | |
| CN103017690A (en) | Method for measuring straightness of super-long guide rail | |
| CN206095174U (en) | Accurate angular surveying appearance | |
| CN110375698B (en) | Inner hole roundness in-situ measurement method based on parameter identification | |
| CN105157600A (en) | Steel pipe contour online measurement method | |
| CN103630096A (en) | Zero position calibration method for articulated arm type coordinate measuring machine | |
| CN113446965B (en) | Method for measuring straightness error of steel pipe end | |
| CN113446966B (en) | Method and device for measuring straightness of end of steel pipe | |
| CN106989670A (en) | A kind of non-contact type high-precision large-scale workpiece tracking measurement method of robot collaboration | |
| CN109059766A (en) | A kind of non-contact detection device of deep groove ball bearing inner ring ditch position | |
| CN103591874B (en) | The method realizing polar coordinate gear measuring center Zero calibration with calibrated bolck | |
| CN102944190A (en) | High-precision detector and method for measuring circular degree of mechanical parts of large sizes | |
| CN108827190A (en) | High precision angle-measuring error detecting apparatus and its detection method based on double autocollimators | |
| CN108168457A (en) | A kind of cylindricity error measuring method and measuring system | |
| CN102288098A (en) | Calibrating device for construction engineering quality detector set verticality detection ruler | |
| CN105157583A (en) | Axle journal length measurement system | |
| CN102654384A (en) | Dynamic radius positioning direct measurement method of rotary-platform-type precision centrifugal machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |