CN105014145A - Detection device and compensation method for pipe fitting cutting radial error - Google Patents
Detection device and compensation method for pipe fitting cutting radial error Download PDFInfo
- Publication number
- CN105014145A CN105014145A CN201510278009.3A CN201510278009A CN105014145A CN 105014145 A CN105014145 A CN 105014145A CN 201510278009 A CN201510278009 A CN 201510278009A CN 105014145 A CN105014145 A CN 105014145A
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- China
- Prior art keywords
- pipe fitting
- error
- checkout gear
- detection
- radial error
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- 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
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
- B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece
Abstract
The invention relates to a detection device and compensation method for the pipe fitting cutting radial error. The device is connected with a servo motor controlled by a controller. The device comprises a detection arm, a drive device driving the detection arm to act and detection switches. The pipe fitting radial error is detected through the simple detection device, the requirement that the machining accuracy of a cutting device is improved when the cutting accuracy needs to be improved is avoided, and therefore the device cost is greatly reduced, and the cutting accuracy is improved.
Description
Technical field
The present invention relates to a kind of error detecting apparatus and compensation method, be specifically related to a kind of pipe fitting cutting radial error checkout gear and compensation method.
Background technology
Current pipe fitting cutting field development is very fast, more and more adopts pipe frame structure as landmark building, stadiums, airport, station etc.Especially the fast development of UHV transmission, has higher requirement to pipe fitting processing, has a large amount of pipe fitting groovings to carry out the situation of plate connection in pipe tower structure; But mostly there is the low situation not reaching requirement of cutting accuracy in current pipe fitting trough cutting equipment.
Present pipe fitting trough cutting equipment is when carrying out end tank cutting, and because mostly the track of equipment own is only to have carried out roughing, the depth of parallelism when mounted and between lathe bed is good not, causes pipe fitting cutting to there is radial error.For this situation, by track is carried out fine finishining can effectively reduce due to track produce radial error; But carry out fine finishining to track, processing cost can improve greatly, more importantly which can not solve the radial error because pipe fitting self circularity and flexural deformation bring.
In addition, part process equipment, in order to solve the problem of radial error, adds the radial checkout gear of pipe fitting side.Pipe fitting center line offset displacement is diametrically detected by this radial checkout gear, direct compensation is carried out according to side-play amount, this mode to some extent solves the problem of radial error, through a large amount of experimental datas, the end tank midline shift error cut out is substantially within 2mm, but for requiring strict pipe fitting processing (control errors is within 0.5mm), this error compensation mode is not just well positioned to meet processing request.
When carrying out pipe fitting trough cutting, under cutting equipment and pipe fitting all do not have the theory state of error, the situation of end tank cutting as shown in Figure 1, the central axis of upper and lower two grooves is point-blank, when the workpiece cut out carries out plate connection, the sheet material of fixed thickness can insert in the groove of workpiece smoothly.And in the pipe fitting trough cutting of reality, but can produce various error, cause the connecting plate of fixed thickness can not in insertion groove, error be as shown in Figures 2 and 3 the comprehensive of the various situations of pipe fitting trough cutting.
As shown in Figure 2, the error brought due to error and pipe fitting self circularity of cutting equipment itself can summarize analysis with this model.Because the theoretical axis H1 of above reason pipe fitting becomes offset axis H2, side-play amount is H; Therefore, theoretical line of cut K1 becomes actual line of cut K2, and the central axis of the groove cut out is respectively groove actual axis L1 and the actual axis L2 of groove, and two axial lines is not on same straight line, and fixed thickness connecting plate cannot smoothly in insertion groove.
As shown in Figure 3, due to pipe fitting torsion, bending etc. be out of shape the situation causing pipe fitting two ends central axis not overlap and produce cutting error, two ends central axis side-play amount is h.In this kind of situation, on the right side of workpiece, the axis starting point of termination R is A, on the left of workpiece, the axis starting point of termination L is B, if windup-degree is the error effect that α does not have other factors to cause, the fixed thickness connecting plate of two ends all can smoothly in insertion groove, but there occurs torsion between the connecting plate of two ends, there is certain angle, this just make this workpiece two terminations cannot with the coupling part exact connect ion at two ends.Because the plate at two ends exists windup-degree, if plate has fixed all, pipe one end can have been inserted, and the other end just can not insert; If plate is unfixing, two ends all can be inserted, and plate just can not correctly be fixed.
Summary of the invention
For the error under above-mentioned two kinds of models, the invention provides and a kind ofly can accurately detect pipe fitting radial offset and be calculated the compensation rate of each axle by the Error Module Analysis of pipe fitting, thus reach pipe fitting cutting radial error checkout gear and the compensation method of precise cutting object.
For solving the problem, the technical scheme that the present invention takes is: a kind of pipe fitting cutting radial error checkout gear, be connected with the servomotor that controller controls, comprise detection arm, the drive unit driving detection arm action and sense switch, described drive unit is the Rodless cylinder be installed on holder, and Rodless cylinder is provided with stockless cylinder slipper; Described detection arm comprises the detection push rod that one end is connected with stockless cylinder slipper and the detection baffle plate be connected with the detection push rod other end; Described sense switch comprises left inductive switch for responding to stockless cylinder slipper position and right inductive switch.In order to the peak of workpiece side bus effectively can be detected, be fixed on the detection baffle plate detecting push rod one end and be processed into dull and stereotyped block.Concrete detection method: when not having sense command, Rodless cylinder is in right inductive switch place, detects push rod and is in retracted mode; When there being sense command, Rodless cylinder action, detection push rod is left inductive switch place along with stockless cylinder slipper moves to, detect push rod and be in the state of stretching out, controller controls servomotor and drives whole checkout gear to move toward workpiece direction, when detecting baffle plate and encountering workpiece, controller just records the position data of now servomotor.According to the position data of record, carry out analytical calculation for error condition, in each numerical control axle cut compensation result to reality by controller compensation, thus reach the effect of precise cutting.
Described detection push rod one end is fixed together by slide attachment plate and stockless cylinder slipper.So just, ensure that detecting push rod is connected with the reliable of stockless cylinder slipper, when stockless cylinder slipper action, the detection action detecting push rod realization and stretch out and retract can be driven.
For ease of installing left and right inductive switch, described Rodless cylinder is provided with inductive switch installing rack.
Described left inductive switch and right inductive switch are mounted to the left and right two ends of inductive switch installing rack respectively.Left and right inductive switch is in order to detect the position residing for stockless cylinder slipper, and sending this positional information to controller, controller judges the state residing for detection arm thus, and takes this as a foundation, control the action that Rodless cylinder carries out next step, two inductive switches also serve spacing effect simultaneously.
Be connected with firm between slide attachment plate for realizing detecting push rod, described detection push rod one end is fixed on slide attachment plate by the second set screws.
Be connected for realize between slide attachment plate with stockless cylinder slipper firm, described slide attachment plate is fixed in stockless cylinder slipper by the first set screws.
Ensure the reliable and stable of drive unit, described Rodless cylinder is fixed on holder by the 3rd set screws.
For preventing drive unit, sense switch is subject to unnecessary collision, and for drive unit provides one deck protective barrier, described holder left end is provided with backplate, and is provided with the through hole for detecting push rod and passing in the middle of backplate.
The compensation method of a kind of pipe fitting cutting radial error, comprises the steps:
Step one, first record journal offset error between pipe fitting two ends theoretical axis and actual axis; Spacing;
The journal offset error of step 2, respectively compensation pipe fitting two ends;
The distortion error at step 3, compensation pipe fitting two ends: first set up error separation, then go out the deviation angle of the actual axis starting point in two ends according to the journal offset error calculation of pipe fitting two ends.When pipe fitting cutting there is journal offset time, if learn that between theoretical axis and offset axis, spacing is H according to detection, then when reality compensates, then perpendicular to pipe fitting numerical control axle then accordingly compensation size be the deviation of H; Then compensate pipe fitting Double-end torsional error: with pipe fitting right-hand member for benchmark, during cutting pipes left end, rotate numerical control axle and compensate an angle [alpha] in the other direction, so just effectively counteract both-end and reverse the error brought.Angle [alpha] be herein carry out Model Abstraction after, calculate according to the detection data of two ends.
The present invention adopts Rodless cylinder as drive unit, and Rodless cylinder itself has the effect of guiding, compared with the common cylinder of employing, eliminates the parts such as line slideway and slide block, structure is simplified; And this device adopts to detect push rod and detect block and is used as detection part, utilizes the positioning function of servo-drive system itself to read the position data of pipe fitting, provides cost savings compared with adopting the scheme of displacement transducer.This system architecture is simple, is achieved the detection of pipe fitting radial error, avoid the requirement increasing cutting equipment machining accuracy because improving cutting accuracy, thus greatly reduce the cost of equipment, improve cutting accuracy by simple checkout gear.
Accompanying drawing explanation
Fig. 1 is workpiece theory cutting schematic diagram;
Fig. 2 is axis of workpiece offset error schematic diagram;
Fig. 3 is workpiece both-end torsional error schematic diagram;
Fig. 4 is checkout gear perspective view;
Fig. 5 is checkout gear original state structural front view;
Fig. 6 is checkout gear original state structure top view;
Fig. 7 is that the A-A of Fig. 6 is to sectional view;
Fig. 8 is that the B-B of Fig. 6 is to sectional view;
Fig. 9 is the structural front view of checkout gear stockless cylinder slipper when moving to the leftmost side;
Figure 10 is the structure top view of checkout gear stockless cylinder slipper when moving to the leftmost side;
Structural front view when Figure 11 is checkout gear detection workpiece;
Structure top view when Figure 12 is checkout gear detection workpiece;
Wherein, 1, detect baffle plate, 2, detect push rod, 3, backplate, 4, holder, 5, slide attachment plate, 6, the first set screws, the 7, second set screws, 8, inductive switch installing rack, 9, Rodless cylinder, 10, stockless cylinder slipper, 11, base plate, the 12, the 3rd set screws, 13, left inductive switch, 14, right inductive switch.
Detailed description of the invention
A kind of pipe fitting cutting radial error checkout gear, be connected with the servomotor that controller controls, and can move under the drive of servomotor, as shown in Fig. 4 to Fig. 8, it comprises detection arm, the drive unit driving detection arm action and sense switch, described drive unit is the Rodless cylinder 9 be installed on by the 3rd set screws 12 on holder 4, and Rodless cylinder 9 is provided with stockless cylinder slipper 10; Described detection arm comprise detection push rod 2 that one end is connected with stockless cylinder slipper 10 by slide attachment plate 5 and with the detection baffle plate 1 detecting push rod 2 other end and be connected.Described detection push rod 2 is fixed on slide attachment plate 5 by the second set screws 7, and described slide attachment plate 5 is fixed in stockless cylinder slipper 10 by the first set screws 6.Described holder 4 is made up of base plate 11 and side plate, and its left end is provided with backplate 3, and is provided with the through hole passed for detection push rod 2 in the middle of backplate 3.Described Rodless cylinder 9 is provided with inductive switch installing rack, and described sense switch comprises the left inductive switch 13 being mounted to the left and right two ends of inductive switch installing rack respectively for responding to stockless cylinder slipper 10 position and right inductive switch 14.
As shown in Figure 5 and Figure 6, if without detection signal time, checkout gear is in original state, and stockless cylinder slipper 10 is in the right-hand member of Rodless cylinder 9, and now right inductive switch 14 has signal, shows that checkout gear is in retracted mode; As shown in Figure 9 and Figure 10, when there being sense command, Rodless cylinder 9 action, stockless cylinder slipper 10 is with detection push rod 2 to move to left end, and now left inductive switch 13 has signal, shows that checkout gear is in the state of stretching out, and now detects baffle plate 1 and does not also touch workpiece.After left inductive switch 13 has signal, controller controls servo-drive system and drives whole checkout gear to move to workpiece direction until detect baffle plate 1 to touch workpiece, and in moving process, checkout gear is in the state of stretching out always.As is illustrated by figs. 11 and 12, when detecting plate washer 1 and touching workpiece, give the effect of the reaction force detecting baffle plate 1 at workpiece under, stockless cylinder slipper 10 can be slided to the right, when left inductive switch 13 is responded to less than stockless cylinder slipper 10, servo-drive system stops mobile, and is recorded by numerical control shaft position now, according to the position of numerical control axle, the offset error of pipe fitting central axis just can be learnt.After reading the positional information of numerical control axle, just checkout gear moves to original position, and controls stockless cylinder slipper 10 and move to right-hand member to right inductive switch 14 place, and detect push rod 2 and be in retracted mode, testing process is complete.
The compensation method of a kind of pipe fitting cutting radial error, is characterized in that comprising the steps:
Step one, first record journal offset error between pipe fitting two ends theoretical axis and actual axis; Spacing;
The journal offset error of step 2, respectively compensation pipe fitting two ends;
The distortion error at step 3, compensation pipe fitting two ends: first set up error separation, then go out the deviation angle of the actual axis starting point in two ends according to the journal offset error calculation of pipe fitting two ends.As shown in Figure 2, when journal offset appears in pipe fitting cutting, if learn that between theoretical axis and actual axis, spacing is H according to detection, when reality compensates, it is the distance of H that the numerical control axle perpendicular to pipe fitting then compensates size accordingly.But when pipe fitting Double-end grooving, first to compensate according to journal offset compensation method, due to pipe fitting distortion, the cutting error that the reason such as bending produces, error is carefully analyzed by setting up error model, remove outside above-mentioned journal offset error, other error can be summed up as Double-end torsional error.As shown in Figure 3, due to pipe fitting torsion, bending etc. be out of shape the situation causing pipe fitting two ends central axis not overlap and produce cutting error, two ends central axis side-play amount is h.In this kind of situation, on the right side of workpiece, the axis starting point of termination R is A, and on the left of workpiece, the axis starting point of termination L is B, and windup-degree is α.Can obtain according to relation in figure, when the actual Double-end cutting of pipe fitting, for avoiding this torsional error, then with termination R on the right side of workpiece for benchmark, during the termination L of cutting left side, rotate numerical control axle and compensate an angle [alpha] in the other direction, so just effectively counteract both-end and reverse the error brought.Show through a large amount of experiments, adopt above error compensation mode, for the situation of pipe fitting both-end groove cutting, end tank midline shift control errors, within 0.5mm, efficiently solves the problem of groove cutting error.
Claims (9)
1. a pipe fitting cutting radial error checkout gear, be connected with the servomotor that controller controls, it is characterized in that: comprise detection arm, the drive unit driving detection arm action and sense switch, described drive unit is the Rodless cylinder be installed on holder, and Rodless cylinder is provided with stockless cylinder slipper; Described detection arm comprises the detection push rod that one end is connected with stockless cylinder slipper and the detection baffle plate be connected with the detection push rod other end; Described sense switch comprises left inductive switch for responding to stockless cylinder slipper position and right inductive switch.
2. pipe fitting cutting radial error checkout gear according to claim 1, is characterized in that: described detection push rod one end is fixed together by slide attachment plate and stockless cylinder slipper.
3. pipe fitting cutting radial error checkout gear according to claim 1, is characterized in that: described Rodless cylinder is provided with inductive switch installing rack.
4. pipe fitting cutting radial error checkout gear according to claim 3, is characterized in that: described left inductive switch and right inductive switch are mounted to the left and right two ends of inductive switch installing rack respectively.
5. pipe fitting cutting radial error checkout gear according to claim 2, is characterized in that: described detection push rod one end is fixed on slide attachment plate by the second set screws.
6. pipe fitting cutting radial error checkout gear according to claim 2, is characterized in that: described slide attachment plate is fixed in stockless cylinder slipper by the first set screws.
7. pipe fitting cutting radial error checkout gear according to claim 1, is characterized in that: described Rodless cylinder is fixed on holder by the 3rd set screws.
8. pipe fitting cutting radial error checkout gear according to claim 1, is characterized in that: described holder left end is provided with backplate, and is provided with the through hole passed for detection push rod in the middle of backplate.
9. a pipe fitting cutting radial error compensation method, is characterized in that comprising the steps:
Step one, first record journal offset error between pipe fitting two ends theoretical axis and actual axis;
The journal offset error of step 2, respectively compensation pipe fitting two ends;
The distortion error at step 3, compensation pipe fitting two ends: first set up error separation, then go out the deviation angle of the actual axis starting point in two ends according to the journal offset error calculation of pipe fitting two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278009.3A CN105014145B (en) | 2015-05-27 | 2015-05-27 | Detection device for pipe fitting cutting radial error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278009.3A CN105014145B (en) | 2015-05-27 | 2015-05-27 | Detection device for pipe fitting cutting radial error |
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| CN105014145A true CN105014145A (en) | 2015-11-04 |
| CN105014145B CN105014145B (en) | 2017-03-22 |
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| CN201510278009.3A Expired - Fee Related CN105014145B (en) | 2015-05-27 | 2015-05-27 | Detection device for pipe fitting cutting radial error |
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| EP0310162A1 (en) * | 1987-09-23 | 1989-04-05 | Optical Storage International Holland | Information recording and/or read system and recording and/or read apparatus for use such a system |
| US20060021208A1 (en) * | 2002-10-21 | 2006-02-02 | Zoller Gmbh & Co. Kg | Method for fastening a tool in a tool chuck |
| CN101182985A (en) * | 2007-12-18 | 2008-05-21 | 中国人民解放军国防科学技术大学 | Coaxial component center deviation measuring apparatus |
| CN201535662U (en) * | 2009-07-31 | 2010-07-28 | 山东华联矿业股份有限公司 | Radial and axial calibration dial rack for coupler |
| CN104070406A (en) * | 2014-06-23 | 2014-10-01 | 广东工业大学 | Device and method for compensating composition error of main shaft in real time |
| CN205020930U (en) * | 2015-05-27 | 2016-02-10 | 济南华汉电气科技有限公司 | Pipe fitting cutting radial error detection device |
-
2015
- 2015-05-27 CN CN201510278009.3A patent/CN105014145B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310162A1 (en) * | 1987-09-23 | 1989-04-05 | Optical Storage International Holland | Information recording and/or read system and recording and/or read apparatus for use such a system |
| US20060021208A1 (en) * | 2002-10-21 | 2006-02-02 | Zoller Gmbh & Co. Kg | Method for fastening a tool in a tool chuck |
| CN101182985A (en) * | 2007-12-18 | 2008-05-21 | 中国人民解放军国防科学技术大学 | Coaxial component center deviation measuring apparatus |
| CN201535662U (en) * | 2009-07-31 | 2010-07-28 | 山东华联矿业股份有限公司 | Radial and axial calibration dial rack for coupler |
| CN104070406A (en) * | 2014-06-23 | 2014-10-01 | 广东工业大学 | Device and method for compensating composition error of main shaft in real time |
| CN205020930U (en) * | 2015-05-27 | 2016-02-10 | 济南华汉电气科技有限公司 | Pipe fitting cutting radial error detection device |
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| CN105014145B (en) | 2017-03-22 |
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Address after: Room 409-414, 4th floor, Building A, Shandong Institute of Information and Communication, No. 1768 Xinlu Street, Jinan High-tech Zone, Shandong Province, 250101 Patentee after: Shandong HUAHAN Electronic Co. Ltd. Address before: 250101 4th Floor, Shunhua Road, Lixia High-tech Development Zone, Jinan City, Shandong Province Patentee before: Jinan Huahan Electric Technology Co., Ltd. |
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Granted publication date: 20170322 Termination date: 20190527 |
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