CN106695451A - Machining device and control device and method for machined workpieces thereof - Google Patents
Machining device and control device and method for machined workpieces thereof Download PDFInfo
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- CN106695451A CN106695451A CN201510435078.0A CN201510435078A CN106695451A CN 106695451 A CN106695451 A CN 106695451A CN 201510435078 A CN201510435078 A CN 201510435078A CN 106695451 A CN106695451 A CN 106695451A
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Abstract
The invention relates to the field of machining and discloses a machining device and a control device and method for machined workpieces thereof. The control device comprises a measuring instrument used for measuring machining data of the machined workpieces, and a controller calculating the machining data compensation amount according to the measured machining data and preset machining data, and compensating the machining data compensation amount into the machining device to correct preset machining data of later workpieces. By means of the technical scheme, the set machining data of the machining device can be compensated, so that the accuracy of the machining data of the workpieces can be improved.
Description
Technical field
The present invention relates to field of machining, in particular it relates to a kind of process equipment and its processing workpiece
Control device and method.
Background technology
Locating and machining benchmark and measurement metewand disunity are often had in manufacturing process is machined
Situation, it cannot ensure the size after work pieces process mainly due to process equipment in process.Example
Such as, box parts using plane and two pitses positioning method during being processed, and it is big that product drawing is required
The characteristics such as partial hole, face are all to be positioned to machine with the locating surface of semifinishing state, and last
Locating surface also needs to finishing once, if the surplus control of finishing locating surface is bad will result in half
The position degree of the characteristics such as hole, the face of the positioning processing of finishing state exceeds product drawing claimed range, thus
Produce defective work.
In order to be accurately controlled the processing of workpiece, the control method of main flow is to use contact in current industry
Formula distance meter measured machined surface (workpiece locating surface i.e. above) before finishing, by work
Part is compensated to machine tool chief axis with the deviation of standard value, then processes workpiece, can with this control method
The deviation of each workpiece and standard value is identified, the allowance uniformity of each workpiece is ensure that.But
When bed piece in system of processing, slide unit, main shaft, fixture change, the replacing of cutter, abrasion
And all parts of measuring instrument are when changing, the processing of precise control workpiece is still unable to.
The content of the invention
It is an object of the invention to provide a kind of process equipment and its control device and method of processing workpiece, should
Control device can improve the accuracy of work pieces process data.
To achieve these goals, the present invention provides a kind of control device for processing workpiece, the control device
Including：Measuring instrument, the process data for measuring the workpiece by processing；Controller, according to measured
Process data and predetermined process data calculate process data compensation rate, and by the process data compensation rate mend
Repay into process equipment with the predetermined process data of workpiece after amendment.
Preferably, the predetermined process data is one of predetermined allowance and preliminary dimension.
Preferably, in the case where the predetermined process data is predetermined allowance Ma, the measurement
Instrument is used for：The dimension D 1 of the workpiece was measured before the work pieces process；After the work pieces process
The dimension D 2 of the workpiece is measured again；And calculate the process data D=D1-D2, the controller
The compensation rate is calculated according to Dx=D-Ma.
Preferably, in the case where the predetermined process data is preliminary dimension D0, the measuring instrument is surveyed
Measure dimension D 2 after the work pieces process and as the process data, the controller according to
Dx=D2-D0 calculates the compensation rate.
Preferably, judged allowance whether within a predetermined range before the workpiece is processed.
Preferably, the control device is used to perform one of the following：Often process a subjob meter
The compensation rate is calculated once with the predetermined process data of workpiece after correcting；Periodically calculate the compensation rate
With the predetermined process data of workpiece after amendment；And calculated after the process equipment maintenance or replacing part
The compensation rate.
Correspondingly, the present invention also provides a kind of process equipment, and the process equipment includes above-mentioned control device.
Correspondingly, the present invention also provides a kind of control method for processing workpiece, and the control method includes：
The process data of workpiece of the measurement by processing；According to measured process data and predetermined process data meter
Process data compensation rate is calculated, and the process data compensation rate is compensated into process equipment with work after amendment
The predetermined process data of part.
Preferably, the predetermined process data is one of predetermined allowance and preliminary dimension.
Preferably, in the case where the predetermined process data is predetermined allowance Ma, the control
Method includes：The dimension D 1 of the workpiece was measured before the work pieces process；The work pieces process it
Measure the dimension D 2 of the workpiece again afterwards；Calculate the process data D=D1-D2；And according to
Dx=D-Ma calculates the compensation rate.
Preferably, in the case where the predetermined process data is preliminary dimension D0, the control method
Including：Measure dimension D 2 after the work pieces process and as the process data；According to
Dx=D2-D0 calculates the compensation rate.
Preferably, judged allowance whether within a predetermined range before the workpiece is processed.
Preferably, the control method includes one of the following：Often process a subjob and calculate one
The secondary compensation rate is with the predetermined process data of workpiece after correcting；Periodically calculate the compensation rate to repair
The predetermined process data of workpiece after just；And calculate described after the process equipment maintenance or replacing part
Compensation rate.
By above-mentioned technical proposal, measure the process data of workpiece, and according to measured process data with
Predetermined process data calculates process data compensation rate, then compensates the process data compensation rate to processing and sets
With the predetermined process data of workpiece after amendment in standby.Can so realize to adding set by process equipment
Number evidence is compensated, to improve the accuracy of work pieces process data.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with
Following specific embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the structural representation of the control device of the processing workpiece provided according to the present invention；
Fig. 2 is the work pieces process schematic diagram for determining surplus processing according to one embodiment of the present invention；And
Fig. 3 is the flow process chart for determining surplus processing according to one embodiment of the present invention.
Description of reference numerals
The controller of 10 measuring instrument 20
11st, 12 contact type distance measuring instrument
P1 workpiece to be machined P2 calibrated bolcks
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Specific embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair
It is bright.
Fig. 1 is the structural representation of the control device of the processing workpiece provided according to the present invention.Such as Fig. 1 institutes
Show, the control device of the processing workpiece that the present invention is provided can include：Measuring instrument 10, passes through for measuring
The process data of the workpiece of processing；Controller 20, according to measured process data and predetermined process data
Calculate process data compensation rate, and after the process data compensation rate is compensated into process equipment with amendment
The predetermined process data of workpiece.Can so realize mending the process data set by process equipment
Repay, to improve the accuracy of work pieces process data.
For different process or the process requirements of product size, (for example milling face adds typical work pieces process
Work) process can typically include that determine surplus process and be sized processing.Wherein, surplus processing is determined
Process be applied to there is high-precision requirement to the allowance (size being processed) of workpiece
Situation；Depending on the process of dimensioned be applied to workpiece size (after processing formed size) tool
There is the situation of high-precision requirement.
For surplus processing is determined, above-mentioned predetermined process data can be set as predetermined allowance；And just
To being sized processing, above-mentioned predetermined process data can be set as preliminary dimension.
During to determine surplus processing, the predetermined process data can be set as that predetermined processing is remaining
Amount Ma, in this process, the measuring instrument 10 can be used for：Measurement should before the work pieces process
The dimension D 1 of workpiece；Measure the dimension D 2 of the workpiece again after the work pieces process；And calculate
The process data D=D1-D2, the controller calculates the compensation rate according to Dx=D-Ma.
Described in detail by specific embodiment below with reference to Fig. 2 and determine surplus process with more clear
The understanding present invention of Chu, it is to be noted however that the present invention is not restricted to this.
Fig. 2 is the work pieces process schematic diagram for determining surplus processing according to one embodiment of the present invention.As schemed
Shown in 2, in surplus process is determined, predetermined processing is provided with process equipment (such as milling machine) remaining
Amount Ma, i.e., the sized data machined away when being processed to workpiece every time.In this embodiment,
Can use but be not limited to PLC system as controller 12, before work pieces process is carried out, PLC systems
System control contact type distance measuring instrument 11 and 12 measures workpiece to be machined P1 and is fixed on fixture respectively
Calibrated bolck P2, and the data obtained by measurement are converted to show that workpiece to be machined P1 is processed table
The positional value D1 ' in face and for example positional value D1 ' is stored into storage address 1, positional value D1 '
It can be the deviation between workpiece to be machined P1 and calibrated bolck P2.In theory as workpiece to be machined P1
Position relative to the calibrated bolck P2 for predetermined value (in the case, ensure that process equipment by
Be processed according to predetermined allowance) when, can for example control lathe motion of main shaft to setting position with
Carry out work pieces process；And if processing workpiece P1 is not predetermined value relative to the position of the calibrated bolck P2,
Then need to compensate machine tool chief axis according to D1 ' to keep carrying out workpiece according to predetermined allowance adding
Work.
After being processed to workpiece to be machined P1, PLC system control contact type distance measuring instrument 11
Workpiece to be machined P1 and calibrated bolck P2 are measured again with 12, and the data obtained by measurement are entered
Row conversion is drawing the positional value D2 ' of workpiece to be machined P1 surfaces to be machined and for example by positional value D2 '
Store into storage address 2.
Afterwards, PLC system can read the positional value D1 ' that stores in storage address 1 and address 2 and
D2 ', then draws reality processing surplus D '=D1 '-D2 ' and predetermined allowance by logical operation module
Deviation Dx=D '-Ma between Ma, that is, obtain compensation rate.The benefit that PLC system will be calculated
In the servo controller of the amount of repaying Dx offset machine tool chief axis, the mistake being processed to workpiece so after
Predetermined allowance Ma can be compensated according to compensation rate Dx in journey, realize closing for process
Ring is controlled such that it is able to which the reality processing surplus of precise control processing workpiece meets predetermined allowance.
Although it should be noted that being measured using contact type distance measuring instrument in above-mentioned implementation method
, but the present invention is not restricted to this, those skilled in the art can also using electro-optical pickoff,
Ultrasonic sensor or other any sensors suitable for measurement distance realize technology of the invention
Scheme.
During to determine surplus processing, the predetermined process data can be set as preliminary dimension
D0, in this process, after work pieces process completion, the measuring instrument 10 can measure the workpiece
Dimension D 2 after processing and as the process data, the controller 20 is by after processing
Dimension D 2 is compared with preliminary dimension (workpiece size to be obtained after processing in theory) D0, with
The compensation rate, and watching compensation rate Dx offset machine tool chief axis are calculated according to Dx=D2-D0
In taking controller, during being so processed to workpiece after can according to compensation rate Dx pairs plus
Work workpiece is processed, and realizes the closed-loop control of process such that it is able to precise control processing workpiece
Reality processing size meets the requirement of the workpiece size to be obtained.
Process is sized above-mentioned, before being processed to workpiece, measuring instrument 10 can be controlled
Workpiece is measured and has measured its workpiece size D1, judge that its processing is remaining based on workpiece size D1
Whether within a predetermined range amount, causes damage to cutter during preventing allowance excessive.
For the demand of different lathes itself precision, different product required precision and different processing efficiencies,
Control device provided by the present invention can perform one of the following：Often process subjob calculating
Once the compensation rate is with the predetermined process data of workpiece after correcting；Periodically calculate the compensation rate with
The predetermined process data of workpiece after amendment；And calculate institute after the process equipment maintenance or replacing part
State compensation rate.
For example, can be by setting select button (such as being arranged on machine tools control panel) to select
Corresponding cooked mode, the cooked mode can include full closed loop control pattern, full open loop control mode and
Periodicity closed loop control mode.
It is qualified in order to obtain very high to Workpiece Machining Accuracy or in the case that process equipment is unstable
Workpiece, can be with full closed loop control pattern.In full closed loop control pattern, processing workpiece is carried out closing every time
Ring is controlled, that is, process fore-and-aft survey instrument 10 and measure, the process data of monitor in real time system of processing
Situation of change；Each time fabrication cycles all can according to the situation of change of whole system of processing obtain compensation rate with
Carry out real-Time Compensation；It is required for measuring instrument 10 to measure workpiece again to calculate benefit after machining every time
The amount of repaying.Although full closed loop control pattern can be realized processing the high machining accuracy of workpiece, due to every
Secondary processing can be compensated to machine tooling data, thus process time can be very long.
In the case where process equipment stability is high, full open loop control mode can be used.That is, lathe
A deviation is only measured before workpiece is processed in process, only identification workpiece size and standard value it
Between deviation, do not monitor and compensate for the change in system of processing, this full open loop control mode section
Most short processing efficiency highest is clapped, but the stability requirement to process equipment is high.
In the case where process equipment is relatively stable, periodicity closed loop control mode can be used.In the cycle
Property closed loop control mode under, can with (such as in machine tools control panel) set closed-loop control frequency,
I.e. lathe performs a closed loop processing pattern automatically after several open loop cooked modes are performed.This week
Phase property closed loop control mode can effectively weigh two aspects of quality and efficiency, ensure the situation of quality
It is lower especially to influence processing efficiency simultaneously.Wherein the frequency of closed-loop control can be according to the steady of process equipment
Determine many factors such as state, the rate of depreciation of cutter, variation of ambient temperature speed to set, for example,
In the case where process equipment is more stable can by the set of frequency of closed-loop control be less frequency with
Improve production efficiency；And work as process equipment it is unstable in the case of can be by the set of frequency of closed-loop control
Larger frequency is ensureing the precision of workpiece.
The present invention provide above-mentioned processing workpiece control device by being compensated to process data online,
Closed-loop control can be realized to process, the change of the process data in implementing monitoring process equipment is real
Apply accurately by compensation rate offset servo-control system, precise control allowance or processing dimension,
Mismachining tolerance is reduced, processing efficiency and machining accuracy is improve；And processed in the influence of process equipment
The software and hardware of size when changing or adjusting (such as：Change cutter, maintenance adjustment main shaft, maintenance adjustment
Screw pair, maintenance adjustment fixture, maintenance capacity instrument etc.) quick detection to system of processing change difference,
And quickly corrected difference is become, saved by detected under line the time cost that is brought of monitor mode and
Human cost.
Correspondingly, the present invention also provides a kind of process equipment, and the process equipment includes above-mentioned machining tool
Control device.
Correspondingly, the present invention also provides a kind of control method for processing workpiece, and the control method includes：Survey
The process data of workpiece of the amount by processing；And according to measured process data and predetermined process data
Calculate process data compensation rate, and after the process data compensation rate is compensated into process equipment with amendment
The predetermined process data of workpiece.
Fig. 3 is the flow process chart for determining surplus processing according to one embodiment of the present invention.Such as Fig. 3 institutes
Show, at 301, the dimension D 1 of the workpiece was measured before the work pieces process；At step 302,
Processing workpiece is processed according to predetermined allowance Ma；At step 303, work pieces process it
The dimension D 2 of workpiece is processed in measurement again afterwards；At step 304, process data D=D1-D2 is calculated；
At step 305, the compensation rate Dx=D-Ma is calculated；At step 306, compensation rate is compensated
The Spindle servo systems system of check-in bed is obtaining revised predetermined allowance Ma；And according to upper
The process of stating is circulated.
About the detail and benefit of processing the control method of workpiece and the above-mentioned control for processing workpiece
The details and benefit of device processed are identical, are repeated no more in this.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited
Detail in above-mentioned implementation method, in range of the technology design of the invention, can be to the present invention
Technical scheme carry out various simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as its
Without prejudice to thought of the invention, it should equally be considered as content disclosed in this invention.
Claims (13)
1. it is a kind of process workpiece control device, it is characterised in that the control device includes：
Measuring instrument, the process data for measuring the workpiece by processing；
Controller, process data compensation rate is calculated according to measured process data with predetermined process data,
And compensate into process equipment with the predetermined process data of workpiece after amendment the process data compensation rate.
2. control device according to claim 1, it is characterised in that the predetermined process data
It is one of predetermined allowance and preliminary dimension.
3. control device according to claim 2, it is characterised in that in the predetermined processing number
In the case of for predetermined allowance Ma,
The measuring instrument is used for：
The dimension D 1 of the workpiece was measured before the work pieces process；
Measure the dimension D 2 of the workpiece again after the work pieces process；And
The process data D=D1-D2 is calculated,
The controller calculates the compensation rate according to Dx=D-Ma.
4. control device according to claim 2, it is characterised in that in the predetermined processing number
In the case of for preliminary dimension D0,
The measuring instrument measures the dimension D 2 after the work pieces process and as the processing number
According to,
The controller calculates the compensation rate according to Dx=D2-D0.
5. control device according to claim 4, it is characterised in that process the workpiece it
It is preceding to judge allowance whether within a predetermined range.
6. the control device according to any one of claim 1-5 claim, it is characterised in that
The control device is used to perform one of the following：
Often process a subjob and calculate once the compensation rate with the predetermined process data of workpiece after correcting；
Periodically the compensation rate is calculated with the predetermined process data of workpiece after correcting；And
The compensation rate is calculated after the process equipment maintenance or replacing part.
7. a kind of process equipment, it is characterised in that the process equipment includes the claims 1-6
Any one of control device described in claim.
8. it is a kind of process workpiece control method, it is characterised in that the control method includes：
The process data of workpiece of the measurement by processing；And
Process data compensation rate is calculated with predetermined process data according to measured process data, and this is added
Number is compensated into process equipment with the predetermined process data of workpiece after amendment according to compensation rate.
9. control method according to claim 1, it is characterised in that the predetermined process data
It is one of predetermined allowance and preliminary dimension.
10. control method according to claim 2, it is characterised in that in the predetermined processing number
In the case of for predetermined allowance Ma, the control method includes：
The dimension D 1 of the workpiece was measured before the work pieces process；
Measure the dimension D 2 of the workpiece again after the work pieces process；
Calculate the process data D=D1-D2；And
The compensation rate is calculated according to Dx=D-Ma.
11. control methods according to claim 2, it is characterised in that in the predetermined processing number
In the case of for preliminary dimension D0, the control method includes：
Measure dimension D 2 after the work pieces process and as the process data；
The compensation rate is calculated according to Dx=D2-D0.
12. control methods according to claim 4, it is characterised in that process the workpiece it
It is preceding to judge allowance whether within a predetermined range.
13. control method according to any one of claim 8-12 claim, its feature exists
In the control method includes one of the following：
Often process a subjob and calculate once the compensation rate with the predetermined process data of workpiece after correcting；
Periodically the compensation rate is calculated with the predetermined process data of workpiece after correcting；And
The compensation rate is calculated after the process equipment maintenance or replacing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510435078.0A CN106695451A (en) | 2015-07-22 | 2015-07-22 | Machining device and control device and method for machined workpieces thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435078.0A CN106695451A (en) | 2015-07-22 | 2015-07-22 | Machining device and control device and method for machined workpieces thereof |
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ID=58895300
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510435078.0A Pending CN106695451A (en) | 2015-07-22 | 2015-07-22 | Machining device and control device and method for machined workpieces thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187671A (en) * | 2019-05-05 | 2019-08-30 | 一汽解放汽车有限公司 | A kind of method of online outer diameter automatic measurement and cutter compensation |
| CN111405962A (en) * | 2017-11-30 | 2020-07-10 | 三菱重工工作机械株式会社 | Machine tool control method, machine tool control device, machine tool setting support device, machine tool control system, and program |
| CN111512116A (en) * | 2017-12-19 | 2020-08-07 | 瑞尼斯豪公司 | Production and measurement of workpieces |
| CN112633776A (en) * | 2021-01-06 | 2021-04-09 | 郑州旭飞光电科技有限公司 | Grinding amount correction method, system, storage medium and electronic equipment |
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| CN112633776A (en) * | 2021-01-06 | 2021-04-09 | 郑州旭飞光电科技有限公司 | Grinding amount correction method, system, storage medium and electronic equipment |
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Application publication date: 20170524 |
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