CN108555692A - For the milling parameter method of adjustment in military aircraft part Milling Machining - Google Patents
For the milling parameter method of adjustment in military aircraft part Milling Machining Download PDFInfo
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- CN108555692A CN108555692A CN201711476195.7A CN201711476195A CN108555692A CN 108555692 A CN108555692 A CN 108555692A CN 201711476195 A CN201711476195 A CN 201711476195A CN 108555692 A CN108555692 A CN 108555692A
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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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
-
- 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
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0995—Tool life management
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- Automatic Control Of Machine Tools (AREA)
Abstract
The present invention relates to military aircraft part manufacture field, especially a kind of milling parameter methods of adjustment in military aircraft part Milling Machining comprising step：A, monitoring device is installed on milling cutter, the torque and moment of flexure that monitoring milling cutter is subject in process；B, Milling Process is carried out to part with current milling parameter；C, it is the oscillogram that process time ordinate is torque or moment of flexure to form abscissa；D, in the oscillogram, when the height for pointed wave crest and wave crest occur doubles left and right than the height for stablizing lateral wave band before it, judge that time point is corresponded at this milling cutter tipping phenomenon occurs；E, it is adjusted according to the milling parameter of the time point corresponding Working position, goal of the invention of the invention is to provide a kind of milling parameter method of adjustment for improving processing efficiency when carrying out Milling Process to military aircraft part, improving product quality reduction processing cost.
Description
Technical field
The present invention relates to military aircraft part manufacture field, especially a kind of millings in military aircraft part Milling Machining
Cut parameter regulation means.
Background technology
High performance today is pursued in military aircraft, the update of product is increased, corresponding aeronautical manufacture pattern
For Multi-varieties and Small-batch Production.
For the mode of Multi-varieties and Small-batch Production, different tool sharpening different materials and shape are used on different lathes
Each different time, using which kind of milling parameter could not only ensure high efficiency processing under the premise of but also fully ensure that product quality, be always
All mechanical processing practitioners are the problem of exploring, most of to milling parameter however due to being difficult to obtain the foundation of science
Research is only based on the conjecture of experience, and there is no the foundations of science as support.
Traditional Optimization of Milling Parameters method is often based on empirical value, according to appearance during converted products
Problem practical adjusting parameter again, for a whole set of milling parameter, wherein may include tipping, quiver knife or to play knife multiple because of parameter
The improper defect phenomenon brought is set, when a certain defect phenomenon of appearance occurs, is divided into two kinds of situations：
A, it is possible to, because defect phenomenon is not obvious, to be found by operating personnel, at this moment be to cover one
After a whole set of milling parameter, then to being analyzed because of the underproof part caused by the defect phenomenon on part, often not
Can only be at this moment certain by the unqualified part of micro-judgment certain caused by qualified part may be number of drawbacks phenomenon
Caused by a kind of defect phenomenon, whole milling parameter is then adjusted, then attempted next time, this mode is to operating personnel
Requirement it is excessively high, simultaneously because rule of thumb judging, be a kind of judgment mode of subjectivity, be susceptible to deviation；
B, then stop processing, carry out the adjustment of parameter to when can be found by operating personnel when defect phenomenon is apparent, this
Sample may adjust parameter when processing again, and it is existing to generate defect since Working position is different, before can not knowing
Whether the position of elephant also will produce defect phenomenon with current parameter, and there are one the uncertain processes lagged；
Both modes are required for test of many times, can not only influence product quality but also can improve processing cost, extremely inefficient.
Invention content
In view of the problems of the existing technology, goal of the invention of the invention be to provide it is a kind of to military aircraft part into
The milling parameter method of adjustment for improving processing efficiency when row Milling Process, improving product quality reduction processing cost.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of milling parameter method of adjustment in military aircraft part Milling Machining comprising step：
A, monitoring device is installed on milling cutter, the torque and moment of flexure that monitoring milling cutter is subject in process；
B, Milling Process is carried out to part with current milling parameter；
C, it is the oscillogram that process time ordinate is torque or moment of flexure to form abscissa；
D, in the oscillogram, when the height for pointed wave crest and wave crest occur before it than stablizing the high of lateral wave band
Degree double left and right when, judge that time point is corresponded at this milling cutter tipping phenomenon occurs；
E, it is adjusted according to the milling parameter of the time point corresponding Working position.
When carrying out Milling Process to military aircraft part, by the way that monitoring device is arranged in step A, torque and moment of flexure are acquired
Numerical value, while being corresponding oscillogram numerical transformation, then specific " when the height ratio for pointed wave crest and wave crest occur
The height for stablizing lateral wave band before it double left and right when " oscillogram corresponds to tipping phenomenon, allow to walk when milling test
After complete entire set of parameters, the machined parameters mistake of specific a certain position leads to tipping phenomenon in deterministic process, also can be well
It is matched because of the underproof part caused by the defect phenomenon on part, precise positioning, then according to specific institute
Determining defect phenomenon and corresponding position, are adjusted milling parameter, and tipping phenomenon can be avoided the occurrence of when testing again,
The number for reducing experiment, can quickly enter in final processing, improve processing efficiency, improve product quality, reduce simultaneously
Experiment also reduces processing cost.
As the preferred embodiment of the present invention, in step C, formed in polar coordinates indicate the sometime direction of point moment of flexure and
The scatter plot of size, in step D, when several individually disperseing does not occur clustering phenomena and have in data point in the scatter plot
When data point, judges that the time point milling cutter occurs and quivers knife phenomenon, allow after covering entire set of parameters when milling test, deterministic process
In the machined parameters mistake of specific a certain position lead to knife phenomenon of quivering, also can well on part because the defect is existing
As caused underproof part is matched, precise positioning, then according to defect phenomenon determined by specific and corresponding
Position is adjusted milling parameter, can avoid the occurrence of knife phenomenon of quivering when testing again, reduce the number of experiment, can be very
It enters soon in final processing, improves processing efficiency, improves product quality, while reducing experiment and also reducing processing cost.
As the preferred embodiment of the present invention, in step D, in the oscillogram, when the trough and trough for occurring dropping suddenly
When height is at half following than the height for stablizing lateral wave band before it, judging to correspond to time point at this there is milling cutter bullet knife and shows
As alloing after covering entire set of parameters when milling test, the machined parameters mistake of specific a certain position causes in deterministic process
Knife phenomenon is played, can also be matched well because of the underproof part caused by the defect phenomenon on part, essence
Certainly position is adjusted milling parameter, then according to specific identified defect phenomenon and corresponding position when testing again
It can avoid the occurrence of and play knife phenomenon, reduce the number of experiment, can quickly enter in final processing, raising processing efficiency,
Product quality is improved, while reducing experiment and also reducing processing cost.
It is described " when the height for pointed wave crest and wave crest occur is than before it in step D as the preferred embodiment of the present invention
The height for stablizing lateral wave band double left and right when " judgement, be suitable for circular milling crack approach of the milling cutter to part.
As the preferred embodiment of the present invention, in step D, judge the milling cutter quiver knife phenomenon when, be three swords in the milling cutter
Occur three clustering phenomenas when milling cutter, in the scatter plot on the outside, and corresponding three habitat branch positions with etc.
Three angular ranges of side triangle are arranged, are considered as the three blade milling cutters steady operation, do not occur knife phenomenon of quivering.
As the preferred embodiment of the present invention, in step D, is persistently risen to again when the trough occurs in waveform and trough occur
After the preceding height for stablizing lateral wave band, the wave trough position is dropped to suddenly again, subsequently form and stablize lateral wave band, judge milling cutter
Occur reaching new stabilization machining state after playing knife phenomenon twice.
The beneficial effects of the invention are as follows：
When carrying out Milling Process to military aircraft part, by the way that monitoring device is arranged in step A, torque and moment of flexure are acquired
Numerical value, while being corresponding oscillogram numerical transformation, then specific " when the height ratio for pointed wave crest and wave crest occur
The height for stablizing lateral wave band before it double left and right when " oscillogram corresponds to tipping phenomenon, allow to walk when milling test
After complete entire set of parameters, the machined parameters mistake of specific a certain position leads to tipping phenomenon in deterministic process, also can be well
It is matched because of the underproof part caused by the defect phenomenon on part, precise positioning, then according to specific institute
Determining defect phenomenon and corresponding position, are adjusted milling parameter, and tipping phenomenon can be avoided the occurrence of when testing again,
The number for reducing experiment, can quickly enter in final processing, improve processing efficiency, improve product quality, reduce simultaneously
Experiment also reduces processing cost.
Description of the drawings
Fig. 1 is circular milling side normal condition moment of flexure oscillogram of the milling cutter in the embodiment of the present invention 1 to part；
Fig. 2 is circular milling side normal condition torque waveform figure of the milling cutter in the embodiment of the present invention 1 to part；
Fig. 3 is moment of flexure oscillogram when the circular milling side of part occurs for milling cutter in the embodiment of the present invention 1 tipping phenomenon；
Fig. 4 is torque waveform figure when the circular milling side of part occurs for milling cutter in the embodiment of the present invention 1 tipping phenomenon；
Fig. 5 is the moment of flexure oscillogram of the three steady machining states of blade milling cutter first time point in the embodiment of the present invention 1；
Fig. 6 is the moment of flexure oscillogram of three blade milling cutter the second time point steady machining states in the embodiment of the present invention 1；
Fig. 7 is that three blade milling cutter first time points in the embodiment of the present invention 1 occur quivering the moment of flexure oscillogram of knife phenomenon；
Fig. 8 is that occur at three second time points of blade milling cutter in the embodiment of the present invention 1 quivering the moment of flexure oscillogram of knife phenomenon；
Fig. 9 is normal condition (non-circular milling crack approach) the moment of flexure torque ripple of the milling cutter in the embodiment of the present invention 1 to part
Shape figure；
Figure 10 is (the non-circular milling crack approach) moment of flexure for bullet knife phenomenon occur of the milling cutter in the embodiment of the present invention 1 to part
Torque waveform figure；
Figure 11 is that the oscillogram in the embodiment of the present invention 1 carries out the oscillogram before mean filter；
Figure 12 is that the oscillogram in the embodiment of the present invention 1 carries out the oscillogram after mean filter；
Figure 13 is that the oscillogram in the embodiment of the present invention 2 carries out the oscillogram before medium filtering；
Figure 14 is that the oscillogram in the embodiment of the present invention 2 carries out the oscillogram after medium filtering；
Figure 15 is that the oscillogram in the embodiment of the present invention 3 carries out the oscillogram before moving average filtering；
Figure 16 is that the oscillogram in the embodiment of the present invention 3 carries out the oscillogram after moving average filtering；
Specific implementation mode
With reference to embodiment and specific implementation mode, the present invention is described in further detail.But this should not be understood
It is only limitted to embodiment below for the range of the above-mentioned theme of the present invention, the technology that all invention contents based on the present invention are realized is equal
Belong to the scope of the present invention.
Embodiment 1
A kind of milling parameter method of adjustment in military aircraft part Milling Machining comprising step：
A, monitoring device is installed on milling cutter, the torque and moment of flexure that monitoring milling cutter is subject in process, specifically, prison
Survey device be mounted on milling cutter handle of a knife on, meanwhile, also in handle of a knife setting have drift compensation function temperature sensor (due to
Temperature change can influence measurement result), the temperature of handle of a knife in process can be measured by the temperature sensor built in handle of a knife
Degree, if temperature change is smaller, temperature-compensating can be ignored, but when handle of a knife temperature change is larger, the data measured just need into
Trip temperature drift compensation completes temperature-compensating by built-in drift compensation function；
B, Milling Process is carried out to part with current milling parameter；
C, it is the oscillogram that process time ordinate is torque or moment of flexure to form abscissa, meanwhile, it is formed in polar coordinates
Indicate that the scatter plot in the sometime direction and size of point moment of flexure, the oscillogram in the step pass through mean filter except interference
(signal may be by electromagnetic interference in signals transmission, and the data measured can not be directly used in analysis, in order to solve this
Problem, processing signal being filtered in step C), mean filter is specially：By taking 100 points as an example, this 100 points are taken
Average value replaces the value of this 100 points, such as Figure 11 before filtering, after filtering as (waveform in Figure 11 and Figure 12 is not spy to Figure 12
Levy explanation, it is intended that comparison shows the effect before and after filtering), it is seen that number a little can be effectively reduced in oscillogram after filtering,
It is apparent to be illustrated, it is more preferable to the analysis of waveform variation tendency；
D, in the oscillogram, when the height for pointed wave crest and wave crest occur before it than stablizing the high of lateral wave band
It (is the moment of flexure under normal condition and torsion such as Fig. 1,2 to the circular milling crack approach of part suitable for milling cutter to spend when doubling left and right
Square figure, Fig. 3,4 are the moment of flexure and torque diagram for tipping phenomenon occur), judge that time point is corresponded at this milling cutter tipping phenomenon occurs,
In the oscillogram, when the height for the trough and trough for occurring dropping suddenly is at half than the height for stablizing lateral wave band before it
When following, judging to correspond to time point at this there is milling cutter bullet knife phenomenon and (rises to out when the trough occurs in waveform and persistently
After the height for stablizing lateral wave band before existing trough, the wave trough position is dropped to suddenly again, subsequently form and stablize lateral wave band, sentence
The stabilization machining state for reaching new after occurring playing knife phenomenon twice that breaks (generally reaches new on part add after experience bullet knife
Station is set), such as the comparison of Fig. 9 and Figure 10, it can be clearly seen that steep drop and the height of trough are more horizontal than stablizing before it in Figure 10
It is at half to the height of wave band hereinafter, the concrete condition in Figure 10 is to have decreased to 1/4 left and right position of original height, then again
Rise to former height, drop to 1/4 left and right position suddenly again), when data point does not occur clustering phenomena and has in the scatter plot
When several data points individually disperseed, judge the time point occur milling cutter quiver knife phenomenon (judge the milling cutter quiver knife phenomenon when,
When the milling cutter is three blade milling cutter, occur three clustering phenomenas in the scatter plot on the outside, and corresponding three poly-
Collect punishment portion position to arrange with three angular ranges of equilateral triangle, is considered as the three blade milling cutters steady operation, does not occur the knife that quivers
Phenomenon, specifically, as Fig. 5-8, Fig. 5 and Fig. 7 are corresponding, Fig. 6 and Fig. 8 are corresponding, respectively first time point and the second time
What the scatter plot of the two states of the difference of point, Fig. 7 and Fig. 8 showed is the case where there is quivering knife)；
E, it is adjusted according to the milling parameter of the time point corresponding Working position.
Embodiment 2
In the present embodiment and embodiment 1 the difference is that, in step C, filtering use medium filtering mode (with
For 100 points, the average value of certain preceding 50 points and rear 50 points put is taken to replace the value of this point), such as Figure 13 before filtering,
Such as Figure 14 after filtering (waveform in Figure 13 and Figure 14 does not do feature description, it is intended that comparison shows the front and back effect of filtering), it is seen that
Number a little can be effectively reduced in oscillogram after filtering, it is apparent to be illustrated, it is more preferable to the analysis of waveform variation tendency.
Embodiment 3
In the present embodiment and embodiment 1 the difference is that, in step C, filter by the way of moving average filtering
(it regards the data of continuous acquisition as a length and defends tenaciously troop for N, after new one-shot measurement, the first data of above-mentioned troop
To remove, remaining N-1 data moves forward successively, and new sampled data is inserted into, and then carries out arithmetical operation to this queue, and
Measured using its result as this primary as a result, reciprocal budget is completed until filtering), such as Figure 15 before filtering, such as scheme after filtering
16 (waveform in Figure 15 and Figure 16 does not do feature description, it is intended that comparison shows the front and back effect of filtering), it is seen that in wave after filtering
Although not reducing number a little on shape figure, it has the ability of very strong removal interference in time-domain signal, eliminates wave
Many unnecessary small bounces, more preferable to the analysis of waveform variation tendency in shape.
Claims (6)
1. a kind of milling parameter method of adjustment in military aircraft part Milling Machining, which is characterized in that including step：
A, monitoring device is installed on milling cutter, the torque and moment of flexure that monitoring milling cutter is subject in process；
B, Milling Process is carried out to part with current milling parameter；
C, it is the oscillogram that process time ordinate is torque or moment of flexure to form abscissa；
D, in the oscillogram, when the height for pointed wave crest and wave crest occur is higher than the height for stablizing lateral wave band before it
At one times or so, judge that time point is corresponded at this milling cutter tipping phenomenon occurs；
E, it is adjusted according to the milling parameter of the time point corresponding Working position.
2. the milling parameter method of adjustment according to claim 1 in military aircraft part Milling Machining, feature exists
In in step C, forming the scatter plot for indicating the sometime direction and size of point moment of flexure in polar coordinates, in step D, work as institute
When stating data point in scatter plot and not occurring clustering phenomena and have several data points individually disperseed, judge that the time point occurs
Milling cutter quivers knife phenomenon.
3. the milling parameter method of adjustment according to claim 1 in military aircraft part Milling Machining, feature exists
In in step D, in the oscillogram, when the height for the trough and trough for occurring dropping suddenly before it than stablizing lateral wave band
Height when being at half following, judge that time point is corresponded at this milling cutter bullet knife phenomenon occurs.
4. the milling parameter adjustment side being used in military aircraft part Milling Machining according to claim 1-3 any one
Method, which is characterized in that described " when the height for pointed wave crest and wave crest occur is than the stable lateral wave band before it in step D
Height double left and right when " judgement, be suitable for milling cutter to the circular milling crack approach of part.
5. the milling parameter method of adjustment according to claim 2 in military aircraft part Milling Machining, feature exists
In, in step D, judge the milling cutter quiver knife phenomenon when, when the milling cutter is three blade milling cutter, go out on the outside in the scatter plot
Existing three clustering phenomenas, and corresponding three habitat branch positions are arranged with three angular ranges of equilateral triangle, depending on
For the three blade milling cutters steady operation, do not occur knife phenomenon of quivering.
6. the milling parameter method of adjustment according to claim 3 in military aircraft part Milling Machining, feature exists
In, in step D, after persistently rising to the height for stablizing lateral wave band before there is trough again when the trough occurs in waveform,
It drops to the wave trough position suddenly again, subsequently forms and stablize lateral wave band, judge that reaching after playing knife phenomenon twice occurs in milling cutter
New stabilization machining state.
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Cited By (1)
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| CN114758159A (en) * | 2022-06-13 | 2022-07-15 | 迪非液压科技江苏有限公司 | Cutting control method for hydraulic brake cutting process |
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