CN110095102A - A kind of gear wheel measuring instrument pitch error calibration method based on differential method - Google Patents
A kind of gear wheel measuring instrument pitch error calibration method based on differential method Download PDFInfo
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- CN110095102A CN110095102A CN201910391156.XA CN201910391156A CN110095102A CN 110095102 A CN110095102 A CN 110095102A CN 201910391156 A CN201910391156 A CN 201910391156A CN 110095102 A CN110095102 A CN 110095102A
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- 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
- G01B21/02—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 length, width, or thickness
- G01B21/04—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 length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- 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
- G01B21/16—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 distance of clearance between spaced objects
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a kind of gear wheel measuring instrument pitch error calibration method based on differential method, the present invention is used using one of tooth of entire gear wheel as full-height tooth, it is fixed and is placed on High-precision standard turntable, full-height tooth and standard turntable group are combined into a new tooth pitch material standard device.Using the tooth pitch standard in gear wheel measuring instrument calibration process, the rotation direction and instrument revolving platform rotation direction of full-height tooth are opposite, the two rotational angle difference is Differential angle, can realize that the error of indication of measuring instrument circular pitch deviation measurement calculates using the measured value of Differential angle and instrument gauge head.This method accepted standard tooth, size and weight only account for the very little ratio of entire gear wheel, and economy is more preferable, and adjustment service efficiency is higher.
Description
Technical field
The invention belongs to precision instrument field of measuring technique, and in particular to a kind of gear wheel measuring instrument tooth based on differential method
Away from error calibrating method.
Background technique
Gear wheel measuring instrument is the instrument for being greater than 500mm gear wheel parts machining error and quality testing for diameter,
Its measurement accuracy directly influences the qualification determination of gear wheel product, therefore needs before using gear wheel measuring instrument to it
Precision calibration is carried out, the error of indication of instrument is obtained.
Gear material standard device, the indicating value of circular pitch deviation measurement will generally be used by carrying out precision calibration to gear wheel measuring instrument
Error is an important measuring index of gear wheel measuring instrument, when calibration to it, mono- known reference value of Yao Caiyong
Gear wheel material standard device, measured on the measuring instrument being calibrated, the actual value of measurement and the difference of reference value are
The error of indication of measuring instrument.
The above method using being what there is no problem, but is applied on gear wheel measuring instrument in stock size measuring instrument
It can bring about many problems, reason is that gear wheel material standard device its specification, size and weight are all bigger, and processing first is high
The material standard device of precision is more difficult, and cost can be very high, and in addition its transport use is also more troublesome, in gear wheel measuring instrument
Repeatedly lifting positioning adjustment is time-consuming and laborious for upper needs progress, significantly impacts calibration efficiency and accuracy.
Summary of the invention
The purpose of the present invention is disclose a kind of gear wheel measuring instrument pitch error calibration method based on differential method.
Realize that technical scheme is as follows:
A kind of gear wheel measuring instrument pitch error calibration method based on differential method, using one of them of entire gear wheel
For tooth as full-height tooth, the size and weight of the full-height tooth only account for the very little ratio of entire gear wheel, by the full-height tooth fixed in position
On High-precision standard turntable, full-height tooth and standard turntable group are combined into a new tooth pitch material standard device；When standard turntable is pressed
When successively rotating according to angular pitch, the reproduction of entire gear " with teeth " is realized in whole circumference.Using it to canine tooth wheel measurement
When instrument carries out circular pitch deviation calibration, full-height tooth and standard turntable are placed on the revolving platform of measuring instrument, so-called differential method is
The rotation direction and revolving platform rotation direction for referring to full-height tooth are on the contrary, the rotational angle difference of full-height tooth and revolving platform is as poor
Dynamic angle.
After first tooth has been surveyed, measuring instrument revolving platform will rotate an angular pitch, and next tooth is gone to measured position
It sets, standard turntable drives full-height tooth opposite direction to rotate an angular pitch at this time, and the measurement of " next tooth " can be realized, and repeats to survey
Amount is until " institute is with teeth " has all been tested.Since measuring instrument revolving platform rotational angle has error, and full-height tooth rotational angle passes through
The high-precision angle sensor of standard turntable itself is measured, tooth pitch caused by measuring instrument revolving platform and full-height tooth Differential angle
Deviation is measured by the gauge head of instrument, the calculating for the subsequent instrumentation error of indication.
This method mainly includes the following steps:
(1) full-height tooth and standard turntable group are combined into a new tooth pitch material standard device
Full-height tooth is fixedly mounted on standard turntable, the two group is combined into a new tooth pitch standard, according to full-height tooth
Parameter Calculation go out the angular pitch of corresponding gear wheel.
(2) tooth pitch standard is fixedly installed on the revolving platform of gear wheel measuring instrument
Tooth pitch standard is fixedly installed on the revolving platform of gear wheel measuring instrument, adjust the axis of rotation of full-height tooth with
Measuring instrument revolving platform axis coaxle.
(3) full-height tooth and instrument revolving platform, which rotate backward, realizes tooth pitch measurement
After starting tooth pitch measurement, instrument revolving platform rotates counterclockwise an angular pitch, and standard turntable drives full-height tooth anti-
The circular pitch deviation value of the standard flank of tooth is measured to one angular pitch of rotation or other predetermined angles, the gauge head of instrument.Weight
Multiple above-mentioned steps realize that the tooth pitch of entire gear wheel " with teeth " measures until instrument revolving platform rotates one week.
(5) according to the Differential angle and instrument circular pitch deviation measurement result meter of instrument revolving platform and each step of full-height tooth
The circular pitch deviation for calculating instrument measures the error of indication.
The present invention has the advantage that compared with prior art and effect:
A kind of gear wheel measuring instrument circular pitch deviation based on differential method disclosed by the invention measures error of indication calibration method,
Solve the problems, such as conventional method using entire gear wheel as brought by material standard device.Full-height tooth is entire gear wheel
One of tooth, size and weight only account for the very little ratio of entire gear wheel, are readily transported and mounting and adjusting.When needs are not with
When same specification size gear wheel calibrates same instrument, advantage is become apparent, i.e., only needs replacing different specification size
Full-height tooth, it be can be combined into a new tooth pitch material standard device with standard turntable.In addition, the tooth pitch material standard
The reference value of device can be manually set, i.e., the angle of rotation angle value of full-height tooth can be angular pitch, can also be bigger or small than angular pitch, at this time
Tooth pitch reference value can be bigger than normal or less than normal, therefore can test gear wheel measuring instrument and the indicating value of value bigger than normal and value less than normal is missed
Difference.
Detailed description of the invention
Attached drawing 1 is the schematic diagram for carrying out pitch error calibration on gear wheel measuring instrument based on differential method.
In figure: 1, gear wheel measuring instrument, 2, instrument revolving platform, 3, standard turntable, 4, full-height tooth, 5, instrument gauge head.
Specific embodiment
The present embodiment is described further with reference to the accompanying drawing:
Embodiment
The circular pitch deviation measurement error of indication of 1 meter of measurement range of gear wheel measuring instrument is calibrated.Using this hair
Bright method, calibration process carry out according to the following steps:
Step (1) is directed to the measurement range of gear wheel measuring instrument, using the parameter of full-height tooth 4 are as follows: modulus 25mm, the number of teeth
38,20 ° of pressure angle, its radius of addendum r can be obtained according to Gear calculation formulaa=500mm, reference radius r=
475mm, angular pitch θ=360 °/38=9.474 °.Full-height tooth 4 is fixedly mounted on standard turntable 3, full-height tooth 4 and standard turn
3 groups of platform are combined into a new tooth pitch standard.
The tooth pitch standard that full-height tooth 4 and standard turntable 3 form is placed on instrument revolving platform 2 by step (2), adjustment mark
The axis of rotation of the axis of rotation and instrument revolving platform 2 of quasi- tooth 4 is coaxial.
Step (3) inputs full-height tooth basic parameter, starting circular pitch deviation measurement in gear wheel measuring instrument control software
Program, instrument gauge head 5 are detected to full-height tooth 4 from the distant to the near on the reference circle tangent line of full-height tooth 4, and detection flank of tooth institute is in place
It postpones, tooth pitch starts to measure by tooth.
While step (4) instrument revolving platform 2 rotates angular pitch θ=9.474 ° counterclockwise, standard turntable 3 is rotated
Full-height tooth 4 is driven to rotate clockwise angleInstrument gauge head 5 measures one on the reference circle flank of tooth of full-height tooth 4
Point, measured value f1.Since instrument revolving platform rotation angle is identical with full-height tooth rotation angle, i.e., Differential angle is 0, works as instrument
In the case that error is not present in device, measured value f1=0；The measured value f in the case that instrument is there are error1It is exactly that instrument tooth pitch is surveyed
Measure the error of indication；
Step (5) repeats step (4) and rotates a circle until instrument revolving platform 2 is accumulative counterclockwise, the instrument in each step
Device revolving platform 2 is all rotated by angular pitch θ=9.474 °, and to rotate clockwise angle identical for full-height tooth 4:The measured value of gauge head 5 is f respectively1, f2,……,fn。
Obtained full-height tooth 4 is rotated angle to step (6) and 5 measured value of gauge head is inclined by the tooth pitch of following formula computing equipment
The difference measurements error of indication:
Differential angle δi:
Instrument individual circular pitch error measures error of indication fpi: fp1=(f1-δ1×r)-(fn-δn× r)=f1-fn,fp2=
(f2-δ2×r)-(f1-δ1× r)=f2-f1,……,fpn=(fn-δn×r)-(fn-1-δn-1× r)=fn-fn-1。
Instrument tooth pitch cumulative departure measures error of indication Fpi: Fp1=fp1,Fp2=(fp1+fp2),……,Fpn=(fp1+fp2
+……+fpn)。
Claims (2)
1. a kind of gear wheel measuring instrument pitch error calibration method based on differential method, it is characterised in that: use entire gear wheel
One of tooth as full-height tooth, the size and weight of the full-height tooth only account for the very little ratio of entire gear wheel, by the standard
Tooth is fixedly mounted on High-precision standard turntable, and full-height tooth and standard turntable group are combined into a new tooth pitch material standard device；When
When standard turntable is successively rotated according to angular pitch, the reproduction of entire gear " with teeth " is realized in whole circumference；It is right using its
When gear wheel measuring instrument carries out circular pitch deviation calibration, full-height tooth and standard turntable are placed on the revolving platform of measuring instrument, institute
Meaning differential method refer to full-height tooth rotation direction and revolving platform rotation direction on the contrary, full-height tooth and revolving platform rotational angle
Difference is Differential angle；
After first tooth has been surveyed, measuring instrument revolving platform will rotate an angular pitch, and next tooth is gone to measured position, this
When standard turntable drive full-height tooth opposite direction rotate an angular pitch, the measurement of " next tooth " can be realized, duplicate measurements is straight
It has all been tested to " institute is with teeth "；Since measuring instrument revolving platform rotational angle has error, and full-height tooth rotational angle passes through standard
The high-precision angle sensor of turntable itself is measured, circular pitch deviation caused by measuring instrument revolving platform and full-height tooth Differential angle
It is measured by the gauge head of instrument, the calculating for the subsequent instrumentation error of indication.
2. a kind of gear wheel measuring instrument pitch error calibration method based on differential method according to claim 1, feature
Be: this method includes the following steps,
Full-height tooth (4) is fixedly mounted on standard turntable (3) by step (1), and the two group is combined into a new tooth pitch standard, root
Go out the angular pitch θ and reference radius r of corresponding gear wheel according to the Parameter Calculation of full-height tooth；
The tooth pitch standard that full-height tooth (4) and standard turntable (3) form is placed on instrument revolving platform (2) by step (2), is adjusted
The axis of rotation of the axis of rotation and instrument revolving platform 2 of full-height tooth (4) is coaxial；
Step (3) inputs full-height tooth basic parameter in gear wheel measuring instrument control software, starts circular pitch deviation process of measurement,
Instrument gauge head (5) is detected to full-height tooth (4) from the distant to the near on the reference circle tangent line of full-height tooth (4), detects flank of tooth position
Afterwards, tooth pitch starts by tooth measurement；
While step (4) instrument revolving platform (2) rotates an angular pitch θ counterclockwise, standard turntable (3) rotates drive standard
Tooth (4) rotates clockwise angleInstrument gauge head (5) measures a point on the reference circle flank of tooth of full-height tooth (4), and measured value is
f1；
Step (5) repeats step (4) and rotates a circle until instrument revolving platform (2) is accumulative counterclockwise, in each step Instrumental
Revolving platform (2) is all rotated by angular pitch θ, and full-height tooth 4 rotates clockwise angle and is respectivelyInstrument is surveyed
The measured value of head (5) is f respectively1,f2,……,fn；
Full-height tooth (4) the rotation angle and instrument gauge head (5) measured value that step (6) obtains above-mentioned steps are calculated by following formula
The circular pitch deviation of instrument measures the error of indication:
Differential angle δi:
Instrument individual circular pitch error measures error of indication fpi: (f1-δ1×r)-(fn-δn×r),(f2-δ2×r)-(f1-δ1×
r),……,(fn-δn×r)-(fn-1-δn-1×r)；
Instrument tooth pitch cumulative departure measures error of indication Fpi: fp1,(fp1+fp2),……,(fp1+fp2+……+fpn)。
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| CN201910391156.XA CN110095102B (en) | 2019-05-11 | 2019-05-11 | Gear pitch error calibration method of large gear measuring instrument based on differential method |
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| CN201910391156.XA CN110095102B (en) | 2019-05-11 | 2019-05-11 | Gear pitch error calibration method of large gear measuring instrument based on differential method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366119A (en) * | 2020-03-05 | 2020-07-03 | 西安工业大学 | Method for separating system errors of measuring instrument in gear pitch deviation measurement |
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| CN104985483A (en) * | 2015-06-05 | 2015-10-21 | 南京工程学院 | Method for improving on-machine measuring precision of pitch deviation of large-sized gears |
| DE102015222863A1 (en) * | 2015-11-19 | 2017-05-24 | Volkswagen Aktiengesellschaft | Method for determining a rotational speed of a rotating shaft |
| CN107101570A (en) * | 2017-06-06 | 2017-08-29 | 哈尔滨精达测量仪器有限公司 | Right angle calibration block layout method, coordinate scaling method and the coordinate adjustment method of a kind of gear measuring center |
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| DE102015222863A1 (en) * | 2015-11-19 | 2017-05-24 | Volkswagen Aktiengesellschaft | Method for determining a rotational speed of a rotating shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366119A (en) * | 2020-03-05 | 2020-07-03 | 西安工业大学 | Method for separating system errors of measuring instrument in gear pitch deviation measurement |
| CN111366119B (en) * | 2020-03-05 | 2021-04-06 | 西安工业大学 | Method for separating system errors of measuring instrument in gear pitch deviation measurement |
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