CN109277879A - Gear wheel gear hobbing process pitch error based on Harmonic Decomposition is in machine compensation method - Google Patents
Gear wheel gear hobbing process pitch error based on Harmonic Decomposition is in machine compensation method Download PDFInfo
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- CN109277879A CN109277879A CN201810980427.0A CN201810980427A CN109277879A CN 109277879 A CN109277879 A CN 109277879A CN 201810980427 A CN201810980427 A CN 201810980427A CN 109277879 A CN109277879 A CN 109277879A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/08—Control or regulation of cutting velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
Abstract
The gear wheel gear hobbing process pitch error based on Harmonic Decomposition that the invention discloses a kind of belongs to chain digital control gear hobbing machine Errors in Gear Processing compensation technique field in machine compensation method.The on-machine measurement of tooth pitch cumulative departure is carried out to the gear wheel containing machining allowance first with the on-machine measurement system of chain digital control gear hobbing machine, obtain the tooth pitch cumulative departure curve of each tooth, then the amplitude spectrum and phase spectrum of tooth pitch cumulative departure curve are sought by discrete Fourier transform, then error compensation amount is solved by obtained amplitude spectrum and phase spectrum, the compensation rate is finally inputted to digital control system in the form of processing program or thermal compensation signal, pass through the meshing relation between control hobboing cutter and workpiece, adjust the instantaneous transmission ratio between hobboing cutter and workpiece, to realize compensating in machine for gear pitch error.
Description
Technical field
It is specifically a kind of based on Harmonic Decomposition the invention belongs to chain digital control gear hobbing machine Errors in Gear Processing compensation technique field
Gear wheel gear hobbing process pitch error is in machine compensation method.
Background technique
Large gear is the widely used base parts and components in many fields such as industrial production, military affairs, detection, with precision system
The development for making technology, it is higher and higher to the requirement of gear wheel transmission performance, and Gear Processing quality and precision decide gear drive
Performance.Gear hobbing process is a kind of common processing method of Gear Processing, it has, and high in machining efficiency, profile accuracy is high, is adapted to
The advantages that property is wide, has a wide range of applications in Gear Processing field.Gears tooth pitch cumulative departure is evaluation transmission properties
Important indicator is one of the precision project that must be detected during Geometry Precision of Gear is evaluated.It directly affects gear pair
The accuracy of movement and the stationarity of work.
Gear teeth processing process equipment used is generally chain digital control gear hobbing machine, in order to improve the processing of numerical control gear hobbing process
Precision, many scholars have done a large amount of research in raising gear hobbing process precision aspect, have mainly prevented and error compensation two from error
A aspect improves the precision of gear hobbing process.Error prevent being mentioned by improving machine tool element design, manufacture and assembly precision
High manufacturing accuracy.Even if this method is feasible, its processing and manufacturing cost can also be significantly improved.And error compensation is then to pass through people
For a kind of new error of manufacturing go to offset or weaken currently the initial error for becoming problem, this method is prevented compared to error
It is more economical and efficient.Most of researcher proposes many error compensating methods at present, according to the foundation of error compensation
(or target compensation) is different, and chain digital control gear hobbing machine error compensation includes: the heat error compensation, geometric error compensation and transmission chain of lathe
Error compensation.It is wherein relatively more to the patent of chain digital control gear hobbing machine Geometric error and thermal error compensation.For example, being based on chain digital control gear hobbing machine
The patent of heat error compensation has CN106483928, CN105397560 etc., and this kind of error compensation belongs to dynamic error compensation, needs
To the heat real-time monitoring of lathe in process and workpiece, the heat of comprehensive process caused by lathe and workpiece temperature distortion is considered
Distortion inaccuracy determines that the algorithm of its compensation model is often more complicated.Based on eccentric error, runout error and biography in geometric error
The patent of dynamic error compensation has CN101970164, CN103817380, CN2 485081 etc., and this kind of error compensation mainly passes through
It is measured by geometric error of the Modern Signal Analysis processing means to chain digital control gear hobbing machine machine tooling process, according to measuring
To information establish the dynamic error prediction model of process, predict error in the actual processing process, calculate it is formal plus
The track bias of work, to carry out error compensation to link corresponding in process.
The above patent is all the compensation about the systematic error of gear-hobbing machine lathe, by each germline for measuring gear-hobbing machine lathe
It unites error, then each error is cut down, reduction mismachining tolerance is reached with this, realizes the compensation of Errors in Gear Processing,
This method the problem is that: error source is monitored in real time and is measured due to needing, it is troublesome in poeration, it is at high cost, for
Gear wheel quality is big, diameter is big, is not easy the features such as repeated clamping, and traditional geometric error compensation method is no longer applicable in.
Summary of the invention
The purpose of the present invention is the tooth pitch cumulative departures using gear wheel as target compensation, provides a kind of based on Harmonic Decomposition
Gear wheel gear hobbing process pitch error in machine compensation method, this method may be implemented the control to chain digital control gear hobbing machine mismachining tolerance and
Compensation, improves the precision of gear hobbing process.
In order to reach the purpose of the present invention, present invention provide the technical scheme that a kind of gear wheel based on Harmonic Decomposition
Gear hobbing process pitch error includes the following steps: in machine compensation method
1) measurement for being carried out tooth pitch cumulative departure to the gear wheel with machining allowance using gear on-machine measurement system, is obtained
To the measurement data F of tooth pitch cumulative departurepki。
[Fpki] i=1,2,3 ..., z (1)
2) by tooth pitch cumulative departure array FpkBy discrete Fourier transform, the amplitude spectrum of tooth pitch cumulative departure curve is sought
And phase spectrum.
In formula, AnFor the amplitude of n times harmonic wave,For the phase angle of n times harmonic wave.
3) amplitude A is 1. taken out by filteringnAmplitude more than or equal to threshold value T compensates.
Even: An>=T is obtained: m≤n≤p (3)
2. establishing error compensation function according to the compensation harmonic component 1. obtained
Equation are as follows:
In formula: CmpjFor the error compensation amount of j-th of tooth
3. the difference for compensation campaign calculates the compensation rate of each compensation campaign according to error compensation function 2.；
4) error compensation amount that will be obtained imports the digital control system of chain digital control gear hobbing machine, controls nibbling between hobboing cutter and workpiece
Conjunction relationship realizes that gear hobbing process pitch error is compensated in machine.
Above-mentioned steps 3) --- -3. in, when compensation campaign be machine tool rotary working table rotate when, machine tool rotary working table turn
Fast knots modification CPAre as follows:
CP=Cmpj (5)
Above-mentioned steps 3) --- -3. in, when compensation campaign be hobboing cutter rotate when, hobboing cutter revolving speed knots modification CgAre as follows:
Cg=Cmpj*i12 (6)
Wherein: i12For transmission ratio.
Above-mentioned steps 3) --- -3. in, when compensation campaign be hobboing cutter axial-periodic move when, hobboing cutter axial-periodic amount of exercise
CgzAre as follows:
Cgz=Cmpj*i12*P (7)
Wherein, P is hobboing cutter screw pitch, i12For transmission ratio.
Above-mentioned steps 4) obtained error compensation amount, it is led by error compensating signal or in the form of generating processing compensation NC code
Enter in the digital control system of chain digital control gear hobbing machine.
Compared with prior art, the invention has the advantages that
1, the present invention is by gear wheel tooth pitch cumulative departure measured by on-machine measurement system, using the method for Harmonic Decomposition
Compensation rate is found out, mending in machine for gear hobbing process pitch error is realized by the movement relation between control hobboing cutter and workpiece
It repays.It does not need to monitor machine tool system error in whole process in real time, it can be according to the tooth pitch cumulative departure of measurement
Result adjust the machined parameters that gear hobbing adds, it is simple and convenient, it is easy to operate, and save processing cost.
2, method provided by the invention can be run under various digital control systems.Preliminary test shows to accumulate by tooth pitch
After deviation compensation processing, gears tooth pitch cumulative departure can be reduced to nearly the 2/3 of original gear tooth pitch cumulative departure, i.e. gear teeth
Reduce nearly 1/3 away from deviation.It should be handled by the analysis of tooth pitch cumulative departure in this way and processing compensates, Neng Gou great
It is big to improve machining accuracy and at low cost, it is easy to operate.
3, The present invention reduces tradition, and required cumbersome error signal acquisition and place is compensated to machine tool system error
Link is managed, with lower cost of compensation and shirtsleeve operation, compensating in machine for gear pitch error is realized, improves numerical control rolling
The machining accuracy of tooth machine.
Detailed description of the invention
Fig. 1 is middle gear pitch error of the present invention in machine compensation method flow chart；
Fig. 2 is to carry out processing mistake using by thermal compensation signal insertion chain digital control gear hobbing machine servo-system in the embodiment of the present invention 1~3
The schematic diagram of difference compensation；
Fig. 3 is to process the flow chart that compensation code compensates mismachining tolerance using NC in the embodiment of the present invention 4~6.
Specific embodiment
The present invention will be further described with example with reference to the accompanying drawing.
Referring to Fig. 1, the present invention is a kind of gear wheel gear hobbing process pitch error based on Harmonic Decomposition in machine compensation method,
Since tooth pitch cumulative departure is that a variety of error source comprehensive functions generate as a result, so mending to the pitch error to gear in machine
It repays, it is necessary to Harmonic Decomposition processing be carried out to the measurement data of tooth pitch cumulative departure, seek tooth pitch using discrete Fourier transform
The amplitude spectrum and phase spectrum of cumulative departure curve pass through obtained amplitude spectrum and phase spectrum instrument error compensation model mathematics side
Journey solves error compensation amount according to Principles of Gear Connection, generates error compensating signal using compensation calculation machine or generates numerical control
NC code is processed, the meshing relation between chain digital control gear hobbing machine hobboing cutter and workpiece is controlled by both methods, realizes gear hobbing process
Pitch error is compensated in machine.
To realize that gear hobbing process pitch error is compensated in machine, the gear wheel tooth pitch cumulative departure with machining allowance is carried out
On-machine measurement carries out data processing using the method for Harmonic Decomposition, imports error compensation mathematical model and solve compensation rate, then
The compensation processing of chain digital control gear hobbing machine is controlled.
Design principle: the present invention is led to using the gear wheel containing machining allowance as its tooth pitch cumulative departure of object on-machine measurement
It crosses discrete Fourier transform and Harmonic Decomposition is carried out to the tooth pitch cumulative departure after measurement, find out respectively different in tooth pitch cumulative departure
The amplitude and phase of frequency component solve error compensation amount then according to these frequency components, and compensation rate is inserted into gear hobbing
In process, controls the meshing relation between hobboing cutter and gear blank and realize compensating in machine for gear wheel pitch error.
Referring to fig. 2, a kind of gear wheel gear hobbing process pitch error based on Harmonic Decomposition provided by the present invention is mended in machine
Compensation method is carried out the servo-system of error compensating signal insertion digital control system using error compensation amount is found out after Harmonic Decomposition
Mismachining tolerance compensation.The difference of Servo System of Computerized Numerical Control Machine Tool is inserted into according to error signal, present embodiment can be divided into change machine
Bed rotary table revolving speed compensation way, change hobboing cutter revolving speed compensation way and by hobboing cutter periodically be axially moved progress
Compensation way.
Embodiment 1: change machine tool rotary working table revolving speed and gear hobbing process pitch error is compensated, specifically include as follows
Step:
1) by carrying out on-machine measurement to the gear with machining allowance, the tooth pitch cumulative departure data F of gear is obtainedpki
[Fpki] i=1,2,3 ..., z (1)
It obtains: k tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum
In formula, AnFor the amplitude of n times harmonic wave,For the phase angle of n times harmonic wave；
3) go out error compensation amount (the i.e. revolving speed of machine tool rotary working table using tooth pitch cumulative departure mathematical compensation model solution
Variable Cp), steps are as follows:
1. taking out amplitude A by filteringnAmplitude more than or equal to threshold value T compensates
Even: An>=T is obtained: m≤n≤p (3)
2. establishing error compensation function according to the compensation harmonic component 1. obtained
Equation are as follows:
In formula: CmpjFor the error compensation amount of j-th of tooth
In 3., when compensation campaign is that machine tool rotary working table rotates, machine tool rotary working table revolving speed knots modification CPAre as follows:
CP=Cmpj (5)
4) compensation calculation machine converts pulse signal (for the servo system using pulse as input quantity for error compensation value
System), then above-mentioned signal is added in the control signal of the servo loop of the rotary table of chain digital control gear hobbing machine, controls machine tool rotary
The transient speed of workbench adjusts the transmission ratio between hobboing cutter and workpiece, to realize the compensation of gear pitch error.
Embodiment 2: change hobboing cutter revolving speed and gear hobbing process pitch error is compensated, specifically comprise the following steps:
1) by carrying out on-machine measurement to the gear with machining allowance, the tooth pitch cumulative departure data F of gear is obtainedpki
[Fpki] i=1,2,3 ..., z (1)
It obtains: k tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum
In formula, AnFor the amplitude of n times harmonic wave,For the phase angle of n times harmonic wave；
3) go out error compensation amount (i.e. hobboing cutter revolving speed variable C using tooth pitch cumulative departure mathematical compensation model solutiong), step
It is rapid as follows:
1. taking out amplitude A by filteringnAmplitude more than or equal to threshold value T compensates
Even: An>=T is obtained: m≤n≤p (3)
2. establishing error compensation function according to the compensation harmonic component 1. obtained
Equation are as follows:
In formula: CmpjFor the error compensation amount of j-th of tooth
3. when compensation campaign is that hobboing cutter rotates, hobboing cutter revolving speed knots modification CgAre as follows:
Cg=Cmpj*i12 (6)
Wherein: i12For transmission ratio.
4) analog signal (the servo system using analog quantity as input quantity is converted for error compensation value by D/A converter
System), then above-mentioned signal is added in the control signal of chain digital control gear hobbing machine hobboing cutter servo loop, controls the transient speed of hobboing cutter, adjusted
Transmission ratio between whole hobboing cutter and workpiece, to realize the compensation of pitch error.
Embodiment 3: it is periodically axially moved by hobboing cutter and gear hobbing process pitch error is compensated, specifically included as follows
Step:
1) by carrying out on-machine measurement to the gear with machining allowance, the tooth pitch cumulative departure data F of gear is obtainedpki
[Fpki] i=1,2,3 ..., z (1)
It obtains: k tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum
In formula, AnFor the amplitude of n times harmonic wave,For the phase angle of n times harmonic wave；
3) go out error compensation amount (i.e. hobboing cutter axial-periodic amount of exercise using tooth pitch cumulative departure mathematical compensation model solution
Cgz), steps are as follows:
1. taking out amplitude A by filteringnAmplitude more than or equal to threshold value T compensates
Even: An>=T is obtained: m≤n≤p (3)
2. establishing error compensation function according to the compensation harmonic component 1. obtained
Equation are as follows:
In formula: CmpjFor the error compensation amount of j-th of tooth
3. when compensation campaign is that hobboing cutter axial-periodic moves, hobboing cutter axial-periodic amount of exercise CgzAre as follows:
Cgz=Cmpj*i12*P (7)
Wherein, P is hobboing cutter screw pitch, i12For transmission ratio.
4) compensation calculation machine converts pulse signal (for the servo system using pulse as input quantity for error compensation value
System) or analog signal (using analog quantity as the servo-system of input quantity) is converted for error compensation value by D/A converter, so
Above-mentioned signal is added to afterwards in the control signal of the servo loop of the rotary table of chain digital control gear hobbing machine, controls hobboing cutter in axial progress
Cycle movement adjusts the transmission ratio between hobboing cutter and workpiece, to realize the compensation of pitch error.
Referring to Fig. 3, which controls using by the control system of the input chain digital control gear hobbing machine of the NC code containing compensation rate
The gear motion of hobboing cutter and workbench processed, realizes the compensation of Errors in Gear Processing.It is different according to the component for realizing compensation campaign, this
Embodiment, which can also be divided into, to be changed the compensation way of machine tool rotary working table revolving speed, changes the compensation way of hobboing cutter revolving speed and lead to
It crosses hobboing cutter and is periodically axially moved the compensation way carried out.
Step 1), step 2) and the step 3) of following example 4,5 and 6 are identical as embodiment 1,2 and 3 difference, summary, no
It is step 4) with place.
Embodiment 4: change machine tool rotary working table revolving speed and gear hobbing process pitch error compensate in machine, including is as follows
Step:
1) by carrying out on-machine measurement to the gear with machining allowance, the circular pitch deviation data of gear are obtained, it may be assumed that k
Tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum；
3) utilizing tooth pitch cumulative departure mathematical compensation model solution to go out error compensation amount, (i.e. machine tool rotary working table revolving speed should
Variable Cp), specific formula is such as shown in (5)；
4) NC numerical control processing compensation program is write according to compensation rate, programming step is as follows: calculating hobboing cutter axis and work first
Penalty function is then inserted into gear hobbing departure process again, made by the meshing relation between platform then by gear hobbing process process discretization
Machine tool rotary working table transient speed is changed according to penalty function, is generated processing compensation NC code, will finally be contained control
The control system of the NC program input gear-hobbing machine of the hobboing cutter revolving speed variable；Processing is compensated, realizes the pitch error of gear
Compensation.
Embodiment 5: gear hobbing process pitch error compensate in machine by changing hobboing cutter revolving speed, specifically includes following step
It is rapid:
1) by carrying out on-machine measurement to the gear with machining allowance, the tooth pitch cumulative departure data of gear are obtained, it may be assumed that
K tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum；
3) go out error compensation amount (i.e. hobboing cutter revolving speed variable C using tooth pitch cumulative departure mathematical compensation model solutiong), tool
Body formula is such as shown in (6)；
4) NC numerical control processing compensation program is write according to compensation rate, programming step is as follows: calculating hobboing cutter axis and work first
Penalty function is then inserted into gear hobbing departure process again, made by the meshing relation between platform then by gear hobbing process process discretization
The transient speed of hobboing cutter changes according to penalty function, generates processing compensation NC code, will finally contain control hobboing cutter revolving speed change
The control system of the NC program input gear-hobbing machine of amount；Processing is compensated, realizes the compensation of the pitch error of gear.
Embodiment 6: gear hobbing process pitch error is compensated in machine by the movement of hobboing cutter axial-periodic, specifically includes following step
It is rapid:
1) by carrying out on-machine measurement to the gear with machining allowance, the tooth pitch cumulative departure data of gear are obtained, it may be assumed that
K tooth tooth pitch cumulative departure Fpk；
2) 1) data measured in are subjected to Harmonic Decomposition using discrete Fourier transform, find out amplitude-frequency spectrum and phase frequency spectrum；
3) go out error compensation amount (i.e. hobboing cutter axial-periodic amount of exercise using tooth pitch cumulative departure mathematical compensation model solution
Cgz), specific formula is such as shown in (7)；
4) NC numerical control processing compensation program is write according to compensation rate, programming step is as follows: calculating hobboing cutter axis and work first
Penalty function is then inserted into gear hobbing departure process again, made by the meshing relation between platform then by gear hobbing process process discretization
The movement of hobboing cutter axial-periodic is changed according to penalty function, generates processing compensation NC code, will finally be turned containing control hobboing cutter
The control system of the NC program input gear-hobbing machine of the fast variable；Processing is compensated, realizes the compensation of the pitch error of gear.
Aforementioned body range of the present invention is not only limited to above-mentioned specific embodiment, is not departing from the above-mentioned thought of the present invention
In the case of, according to ordinary skill knowledge and customary means, various replacements and change are made, should all include of the invention
In protection scope.
Claims (5)
1. a kind of gear wheel gear hobbing process pitch error based on Harmonic Decomposition is in machine compensation method, which is characterized in that including such as
Lower step:
1) measurement for carrying out tooth pitch cumulative departure to the gear wheel with machining allowance using gear on-machine measurement system, obtains tooth
Measurement data F away from cumulative departurepki。
[Fpki] i=1,2,3 ..., z (1)
2) by tooth pitch cumulative departure array FpkBy discrete Fourier transform, the amplitude spectrum and phase of tooth pitch cumulative departure curve are sought
Position spectrum.
In formula, AnFor the amplitude of n times harmonic wave,For the phase angle of n times harmonic wave.
3) amplitude A is 1. taken out by filteringnAmplitude more than or equal to threshold value T compensates.
Even: An>=T is obtained: m≤n≤p (3)
2. establishing error compensation function equation according to the compensation harmonic component 1. obtained are as follows:
In formula: CmpjFor the error compensation amount of j-th of tooth
3. the difference for compensation campaign calculates the compensation rate of each compensation campaign according to error compensation function 2.；
4) error compensation amount that will be obtained imports the digital control system of chain digital control gear hobbing machine, controls and engages pass between hobboing cutter and workpiece
System realizes that gear hobbing process pitch error is compensated in machine.
2. the gear hobbing process pitch error according to claim 1 based on Harmonic Decomposition is in machine compensation method, feature exists
In the step 3) --- -3. in, when compensation campaign be machine tool rotary working table rotate when, machine tool rotary working table revolving speed change
Measure CPAre as follows:
CP=Cmpj (5)
3. the gear hobbing process pitch error according to claim 1 based on Harmonic Decomposition is in machine compensation method, feature exists
In the step 3) --- -3. in, when compensation campaign be hobboing cutter rotate when, hobboing cutter revolving speed knots modification CgAre as follows:
Cg=Cmpj*i12 (6)
Wherein: i12For transmission ratio.
4. the gear hobbing process pitch error according to claim 1 based on Harmonic Decomposition is in machine compensation method, feature exists
In the step 3) --- -3. in, when compensation campaign be hobboing cutter axial-periodic move when, hobboing cutter axial-periodic amount of exercise CgzAre as follows:
Cgz=Cmpj*i12*P (7)
Wherein, P is hobboing cutter screw pitch, i12For transmission ratio.
5. the gear hobbing process pitch error according to claim 2,3 or 4 based on Harmonic Decomposition is in machine compensation method, spy
Sign is that the error compensation amount that the step 4) obtains is led by error compensating signal or in the form of generating processing compensation NC code
Enter in the digital control system of chain digital control gear hobbing machine.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113147A (en) * | 2020-01-09 | 2020-05-08 | 威世特汽车部件（常州）有限公司 | Process for automatic detection and automatic compensation of gear |
| CN112222538A (en) * | 2020-09-28 | 2021-01-15 | 南京工业大学 | Tooth pitch accumulated error compensation method for forming and milling tooth machining |
| CN113127986A (en) * | 2021-03-30 | 2021-07-16 | 南京工业大学 | Method for analyzing influence of cutter error on tooth profile of machined gear |
| CN114034330A (en) * | 2021-10-28 | 2022-02-11 | 超同步股份有限公司 | Compensation method and system of gear type encoder |
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| CN112222538A (en) * | 2020-09-28 | 2021-01-15 | 南京工业大学 | Tooth pitch accumulated error compensation method for forming and milling tooth machining |
| CN113127986A (en) * | 2021-03-30 | 2021-07-16 | 南京工业大学 | Method for analyzing influence of cutter error on tooth profile of machined gear |
| CN113127986B (en) * | 2021-03-30 | 2022-11-29 | 南京工业大学 | Method for analyzing influence of cutter error on tooth profile of machined gear |
| CN114034330A (en) * | 2021-10-28 | 2022-02-11 | 超同步股份有限公司 | Compensation method and system of gear type encoder |
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