CN102120230A - Device and method for measuring bending angle of bent piece - Google Patents
Device and method for measuring bending angle of bent piece Download PDFInfo
- Publication number
- CN102120230A CN102120230A CN 201010579352 CN201010579352A CN102120230A CN 102120230 A CN102120230 A CN 102120230A CN 201010579352 CN201010579352 CN 201010579352 CN 201010579352 A CN201010579352 A CN 201010579352A CN 102120230 A CN102120230 A CN 102120230A
- Authority
- CN
- China
- Prior art keywords
- bending
- distance
- bending part
- rotatable platform
- measuring sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
Abstract
The invention provides a device and method for measuring the bending angle of a bent piece. The device comprises a rotation platform, a drive device, an angle sensor, a ranging sensor and a control device, wherein the drive device is mechanically connected with the rotation platform and used for driving the rotation platform to rotate; the angle sensor is used for measuring the rotation angle of the rotation platform; the ranging sensor is fixed on the rotation platform and is used for measuring the distance between the ranging sensor and a first bent part of the bent piece; and the control device is electrically connected with the angle sensor, the ranging sensor and the drive device, and is used for controlling the drive device to drive the rotation platform to rotate in the bending direction of the first bent part according to the distance between the ranging sensor and the first bent part until the distance to the first bent part measured by the ranging sensor is minimal, and at least calculating the bending angle of the bent piece according to the rotation angle sensed by the angle sensor. The device and method provided by the invention have the advantages of simple structure and accurate measurement, and have low requirements for external environment.
Description
Technical field
The present invention relates to the angular surveying field, and relate in particular to a kind of the detection by the measurement device and the method for the bending angle of bending workpiece.
Background technology
The bus bar folder is a kind of equipment that bus is processed of being used for, and Fig. 1 shows angle and is controlled at application in the bus bar folder.As shown in Figure 1, the bus bar folder comprises die 10 and pressure head 20.When using the bending angle of this bus bar folder change bus 30, bus 30 is placed described die 10, and utilize 20 pairs of buses of pressure head 30 to carry out punching press, thus the bending angle of change bus 30.In this bus bar folder, the control of bending angle is realized by angle indicating device.This angle indicating device comprises push rod 40, pointer 50 and dial 60, described push rod 40 is positioned at described die 10, links to each other with described pointer 50, and moves downward along with the extruding of bus 30, thereby drive pointer 50 motions, shown angle on the indicating graduation dish 60.The installation site of this angle indicating device according to push rod about in the of 40 displacement and the corresponding relation of bus bending angle determine.
Though above-mentioned angle indicating device can be realized the measurement of bending angle, yet its alignment error is very big to the influence of measurement result, and owing to often impacted, the loss of angle indicating device is very big.
Also exists laser autocollimatic method, the interior shooting method of optics and laser interference to carry out bending angle in the prior art and measure, yet there is following shortcoming in it:
(1) laser autocollimatic method: the resolution ratio of measurement is relevant with the focal length of lens in the collimator, and focal length is long more, and resolution ratio is high more, can produce the problem that this neutralization of instrument takes up space and increases but the focal length of lens is long.In addition, generally very little based on the measuring instrument measurement category of optics autocollimatic method, between a few minutes and tens minutes, the resolution ratio of measurement is also undesirable usually.
(2) optics internal reflection method: this method need be carried out in the darkroom the environmental requirement height, requires light source that advantages of higher stability is arranged simultaneously.
(3) laser interferance method: this method is very harsh to environmental requirement, and many extraneous factors (flowing as surrounding air) all can produce very big influence to measurement result.In addition, based on the apparatus structure precision of laser interferance method, stability is bad, volume is big, only as a kind of measuring basis and detection means, is difficult to in-site measurement usually.
Summary of the invention
For overcoming the many defectives in the bending angle measurement scheme in the prior art, spy of the present invention provides simple, the applied widely and measurement result of a kind of mechanism bending angle measurement device and method accurately.
The bending angle measurement device of a kind of bending member provided by the invention (this bending member comprises first bending part and second bending part that lays respectively at both sides, bending member inflection point) comprising: rotatable platform; Drive unit with described rotatable platform mechanical connection, is used to drive described rotatable platform and rotates; Angular transducer is used to measure the rotational angle of described rotatable platform; Distance measuring sensor is fixed on the described rotatable platform, is used to measure the distance of this distance measuring sensor to described bending member; And control device, with described angular transducer, distance measuring sensor and drive unit are electrically connected, be used for according to the distance between first bending part of distance measuring sensor and bending member, control described drive unit and drive of the overbending direction rotation of described rotatable platform at described bending member first bending part, minimum until the distance that described distance measuring sensor is measured to first bending part of described bending member, with the rotational angle of described angular transducer institute sensing bending angle, and calculate the bending angle of described bending member at least according to this bending angle as first bending part of described bending member.
Wherein, the bending angle of described bending member can be 2 times of bending angle of first bending part of described bending member.
Wherein, this equipment can also comprise another group rotatable platform, drive unit, angular transducer and the distance measuring sensor at second bending part setting of described bending member, described control device also calculates the bending angle of second bending part of described bending member, and with the bending angle addition of first bending part of this bending angle and described bending member, to draw the bending angle of described bending member.
Wherein, described distance measuring sensor can be ultrasonic ranging sensor, laser range sensor or infrared distance measuring sensor.Described angular transducer can be the obliquity sensor that is fixed on the described rotatable platform.
Wherein, described drive unit can be stepper motor.
Wherein, described drive unit and the mechanical connection of described rotatable platform can be that worm and gear is connected or gear connects.
In addition, a kind of being used for provided by the invention comprises the method that the bending angle of bending member is measured: distance measuring sensor is fixed on rotatable platform; Before described bending member bends, regulate described rotatable platform, make described distance measuring sensor vertically over against first bending part of described bending member; After described bending member bends, rotate described rotatable platform at the overbending direction of first bending part of described bending member, make the measured distance of described distance measuring sensor minimum to described bending member; And the rotational angle of measuring described rotatable platform, with the bending angle of this rotational angle, and calculate the bending angle of described bending member at least according to this bending angle as first bending part of described bending member.
Wherein, the bending angle of described bending member can be 2 times of bending angle of first bending part of described bending member.
Wherein, described method can also comprise: the bending angle of measuring second bending part of described bending member; And with the bending angle addition of first bending part of this bending angle and described bending member, to draw the bending angle of described bending member.
Wherein, described make described distance measuring sensor measured to may further comprise the steps of described first bending part apart from minimum: after bending member bends, write down the measured initial distance of described distance measuring sensor to described first bending part, and on the overbending direction of described first bending part, be that unit rotates described rotatable platform with first step-length, revolution moves first step-length, the measured first front distance to described first bending part of described distance measuring sensor compares in the current distance of extremely described first bending part that described distance measuring sensor is measured and the last position, if it is that unit rotates described rotatable platform that current distance less than first front distance, then continues on the overbending direction of described first bending part with first step-length; If current distance, is then controlled described rotatable platform rollback greater than first front distance to last position, and remains on this position; If current distance equals first front distance, then control described rotatable platform and remain on current location.
Wherein, described make described distance measuring sensor measured to may further comprise the steps of described first bending part apart from minimum: after bending member bends, write down the measured initial distance of described distance measuring sensor to described bending member, and on the overbending direction of described first bending part, be that unit rotates described rotatable platform with second step-length, revolution moves second step-length, the measured first front distance to described first bending part of described distance measuring sensor compares in the current distance of extremely described first bending part that described distance measuring sensor is measured and the last position, if it is that unit rotates described rotatable platform that current distance less than first front distance, then continues on the overbending direction of described first bending part with second step-length; If current distance is more than or equal to first front distance, then being controlled on the direction opposite with the overbending direction of described first bending part with the 3rd step-length less than described second step-length is that unit rotates described rotatable platform, revolution moves the 3rd step-length, the measured first front distance to described first bending part of described distance measuring sensor compares in the current distance of the extremely described bending member that described distance measuring sensor is measured and the last position, if it is that unit rotates described rotatable platform that current distance less than first front distance, then continues on the direction opposite with the overbending direction of described first bending part with the 3rd step-length; If current distance, is then controlled described rotatable platform rollback greater than first front distance to last position, and remains on this position; If current distance equals first front distance, then control described rotatable platform and remain on current location.
Bending angle measurement device provided by the invention and method can be by seeking distance measuring sensor to the distance of described bending member and rotatable platform is rotated so that described distance is minimum, utilize angular transducer to measure the rotational angle of rotatable platform, thereby can realize the indirect measurement of bending angle of first bending part of bending member with rotational angle, utilize the bending angle of first bending part of this bending member to try to achieve the bending angle of whole bending member afterwards.That the present invention has is simple in structure, measure accurately and the not high advantage of environmental requirement to external world.
Description of drawings
Fig. 1 shows the application of angle indicating device in the bus bar folder;
Fig. 2 is the structural representation of bending angle measurement device provided by the invention;
Fig. 3 is the schematic diagram that shows the concrete use of bending angle measurement device provided by the invention;
Fig. 4 is to the flow chart of the rotation process of rotatable platform in the bending angle measurement device provided by the invention;
Fig. 5 is to the flow chart of another rotation process of rotatable platform in the bending angle measurement device provided by the invention; And
Fig. 6 is the flow chart of bending angle measuring method provided by the invention.
The specific embodiment
For allow above-mentioned and other purposes of the present invention, feature and advantage can be more obvious, hereinafter will cooperate appended diagram, be described in detail below.In addition, in explanation of the present invention, identical member is with identical symbolic representation, in this close chat earlier bright.
Fig. 2 is the structural representation of bending angle measurement device provided by the invention.As shown in Figure 2, the invention provides a kind of bending angle measurement device of bending member, this bending member comprises the first bending part 30a and the second bending part 30b that lays respectively at both sides, bending member inflection point, this equipment comprises rotatable platform 100, angular transducer 200, distance measuring sensor 300, drive unit 400 and control device 500, drive unit 400 and described rotatable platform 100 mechanical connections are used to drive described rotatable platform 100 and rotate at the overbending direction of the first bending part 30a of described bending member; Described angular transducer 200 is used to measure the rotational angle of described rotatable platform 100; Described distance measuring sensor 300 is fixed on the described rotatable platform 100, is used to measure the distance of this distance measuring sensor 300 to the first bending part 30a of described bending member; Described control device 500 and described angular transducer 200, distance measuring sensor 300 and drive unit 400 are electrically connected, be used for according to the distance between the first bending part 30a of distance measuring sensor 300 and described bending member, control described drive unit 400 and drive of the overbending direction rotation of described rotatable platform 100 at the first bending part 30a of described bending member, minimum until the distance that described distance measuring sensor 300 is measured to the first bending part 30a of described bending member, with the rotational angle of 200 sensings of described angular transducer bending angle, and calculate the bending angle of described bending member at least according to this bending angle as the first bending part 30a of described bending member.
Wherein, described control device 500 can be other embedded systems such as single-chip microcomputer or DSP, and it can comprise display screen and be shown with the bending angle to described bending member.
Wherein, described distance measuring sensor 300 can be ultrasonic ranging sensor, laser range sensor or infrared distance measuring sensor.Described angular transducer 200 can be the obliquity sensor that is fixed on the described rotatable platform 100 (such as, solid pendulum-type obliquity sensor, liquid pendulum-type obliquity sensor or pendulum type in-gas inclination senser), this obliquity sensor can rotate with described rotatable platform 100, thereby with the inclination angle of its sensing rotational angle as rotatable platform 100; Described angular transducer 200 also can be realized by two distance measuring sensors being located at rotatable platform 100 belows, this distance measuring sensor can be measured respectively to the distance of described rotatable platform 100, according to the difference of measured distance and the distance between this two distance measuring sensors, utilize the trigonometric function relational expression to try to achieve the rotational angle of rotatable platform 100 afterwards.Described drive unit 400 can be stepper motor.Certainly, the present invention is not limited to this, anyly realizes finding range, angular surveying and drive the device that rotatable platform 100 rotates and all can be applicable to this.
Wherein, described drive unit 400 can be various connected mode known in the field with the mechanical connection of described rotatable platform 100, be preferably that worm and gear connects or gear connects, this connection can make drive unit 400 to the stable drive of rotatable platform 100, and the precision height.
Fig. 3 is the schematic diagram that shows the concrete use of bending angle measurement device provided by the invention.As shown in Figure 3, distance measuring sensor 300 and angular transducer 200 (is that obliquity sensor is that example describes with angular transducer 200 at this) are fixed on the rotatable platform 100, and this rotatable platform 100 is by drive unit 400 driven rotary, thereby forms a closed-loop control system.Straight and when bending takes place (shown in figure solid line part) at bending member, vertically measure apart from the distance of the first bending part 30a of bending member over against the distance measuring sensor 300 of bending member, this distance is the initial minimum range apart from the first bending part 30a of bending member, and this distance is the basis of angular transducer 200 zeroings.When bending takes place in bending member (shown in the figure dotted portion), distance measuring sensor 300 measured distances (this distance is the distance of distance measuring sensor 300 to first bending part 30a) change, control device 500 with the measured distance of distance measuring sensor 300 as feeding back, drive unit 400 is started, driving rotatable platform 100 rotates, thereby drive angular transducer 200 and distance measuring sensor 300 rotations, record when the distance of the first bending part 30a of bending member is described minimum range until distance measuring sensor 300, drive unit 400 quits work, and this moment, obliquity sensor 200 measured angles were the bending angle of the first bending part 30a of bending member.
Need to prove at this, for the situation of the centre of bending member being carried out punching press, first bending part 30a of described bending member and the bending angle of the second bending part 30b are the same, measure bending angle that bending angle can obtain whole bending member at the first bending part 30a this moment, and the bending angle of whole bending member is the twice of the bending angle of the first bending part 30a;
In addition, for the situation that punching press is carried out in the centre of bending member 10, the bending angle of the first bending part 30a and the second bending part 30b in fact can not be in full accord.Therefore, preferably, described equipment also can comprise another group rotatable platform, drive unit, angular transducer and the distance measuring sensor at the second bending part 30b setting of described bending member, described control device 500 also calculates the bending angle of the second bending part 30b of described bending member, and with the bending angle addition of the first bending part 30a of this bending angle and described bending member, to draw the bending angle of described bending member.By this, can reduce to adopt the bending angle of the above-mentioned survey first bending part 30a and, make measurement more accurate with the error that method may produce of 2 times of these bending angles as the bending angle of whole bending member.
In addition, for the situation of the non-central position of bending member being carried out punching press, the first bending part 30a of described bending member and the second bending part 30b are because the influence of factors such as quality, its bending angle is different, also need to measure respectively the bending angle of the first bending part 30a and the second bending part 30b this moment, promptly need lay above-mentioned bending angle measurement device respectively at the first bending part 30a and the second bending part 30b, and with the bending angle addition of the measured first bending part 30a and the second bending part 30b, with bending angle as whole bending member.
Below to control device 500 as how distance measuring sensor 300 measured distances drive rotatable platform 100 as feedback and rotate, till the measured distance to the first bending part 30a of bending member of distance measuring sensor 300 is minimum range, be described.
Fig. 4 is to the flow chart of the rotation process of rotatable platform 100 in the bending angle measurement device provided by the invention.As shown in Figure 4, after bending member bends, the initial distance that the described distance measuring sensor of described control device 500 records 300 is measured to the first bending part 30a of described bending member, and controlling described drive unit 400, to drive described rotatable platform 100 be that unit rotates with first step-length on the overbending direction of the described first bending part 30a, revolution moves first step-length, the measured first front distance to the first bending part 30a of bending member of described distance measuring sensor to the current distance of the first bending part 30a of bending member and the last position that described distance measuring sensor 300 is measured 300 compares, if current distance is less than first front distance, then show rotatable platform 100 at present just towards the measured minimum direction of distance to the first bending part 30a of bending member of distance measuring sensor 300 is rotated, continuing the described rotatable platform 100 of control is that unit rotates with first step-length on the overbending direction of the described first bending part 30a; If current distance is greater than first front distance, it is excessive to show that then rotatable platform 100 rotates, control described rotatable platform 100 rollbacks to last position, and remaining on this position, this position promptly makes the minimum position of distance to the first bending part 30a of bending member that distance measuring sensor 300 is measured in the regulative mode for this reason; If current distance equals first front distance, then show the minimum position of distance that rotatable platform 100 residing positions make for this reason that promptly distance measuring sensor 300 is measured in the regulative mode, control described rotatable platform 100 and remain on current location to the first bending part 30a of bending member.Need to prove at this, described first step-length needs enough little, so that it is very fine to the adjusting of rotatable platform 100, can realize minimum range in this regulative mode very near described initial minimum range, just make distance measuring sensor 300 basic or fully vertically over against the first bending part 30a of bending member.
Fig. 5 is to the flow chart of another rotation process of rotatable platform 100 in the bending angle measurement device provided by the invention.Preferably, as shown in Figure 5, after bending member bends, the initial distance that the described distance measuring sensor of described control device 500 records 300 is measured to the first bending part 30a of described bending member, and controlling described drive unit 400, to drive described rotatable platform 100 be that unit rotates with second step-length on the overbending direction of the described first bending part 30a, revolution moves second step-length, the measured first front distance to the first bending part 30a of bending member of described distance measuring sensor to the current distance of the first bending part 30a of bending member and the last position that described distance measuring sensor 300 is measured 300 compares, if current distance is less than first front distance, then show rotatable platform 100 at present just towards the measured minimum direction of distance to the first bending part 30a of bending member of distance measuring sensor 300 is rotated, continuing the described rotatable platform 100 of control is that unit rotates with second step-length on the overbending direction of the described first bending part 30a; If current distance is more than or equal to first front distance, it is excessive to show that then rotatable platform 100 rotates, controlling described rotatable platform 100 is that unit rotates with the 3rd step-length less than described second step-length on the direction opposite with the overbending direction of the described first bending part 30a, revolution moves the 3rd step-length, the measured first front distance to the first bending part 30a of bending member of described distance measuring sensor to the current distance of the first bending part 30a of bending member and the last position that described distance measuring sensor 300 is measured 300 compares, if current distance is less than first front distance, it is still excessive to show that then rotatable platform 100 rotates, and continuing the described rotatable platform 100 of control is that unit rotates with the 3rd step-length on the direction opposite with the overbending direction of the described first bending part 30a; If current distance is greater than first front distance, show that then rotatable platform 100 rollbacks are excessive, control described rotatable platform 100 rollbacks to last position, and remain on this position, this position promptly makes the minimum position of distance that distance measuring sensor 300 is measured in the regulative mode for this reason; If current distance equals first front distance, then show rotatable platform 100 residing positions promptly for this reason making in the regulative mode control described rotatable platform 100 and remain on current location in the minimum position of distance that distance measuring sensor 300 is measured to the first bending part 30a of bending member.
Certainly, utilize other searching method search to make minimum rotatable platform 100 positions of distance measuring sensor 300 measured distances also be fine, yet preferably adopt above-mentioned searching method provided by the present invention, this method can utilize second step-length to determine an approximate location, utilize the 3rd step-length to finely tune afterwards again, the search efficiency height helps improving the real-time of bending angle measurement device.
In addition, the present invention also provides with a kind of method that the bending angle of bending member is measured of being used for.Fig. 6 is the flow chart of bending angle measuring method provided by the invention.As shown in Figure 6, described method comprises: distance measuring sensor 300 is fixed on the rotatable platform 100; Before described bending member bends, regulate described rotatable platform 100, make described distance measuring sensor 300 vertical first bending parts over against described bending member; After described bending member bends, rotate described rotatable platform 100 at the overbending direction of the first bending part 30a of described bending member, make the measured distance of described distance measuring sensor 300 minimum to the first bending part 30a of described bending member; And the rotational angle of measuring described rotatable platform 100, with the bending angle of this rotational angle, and calculate the bending angle of described bending member at least according to this bending angle as the first bending part 30a of described bending member.
Wherein, the bending angle of described bending member can be 2 times of bending angle of the first bending part 30a of described bending member.
Wherein, described method also can comprise: the bending angle of measuring the second bending part 30b of described bending member; And with the bending angle addition of the first bending part 30a of this bending angle and described bending member, to draw the bending angle of described bending member.
Wherein, describedly make measured may further comprise the steps to the I of the distance of the described first bending part 30a of described distance measuring sensor 300: after bending member bends, write down the measured initial distance of described distance measuring sensor 300 to the first bending part 30a of described bending member, and on the overbending direction of the described first bending part 30a, be that unit rotates described rotatable platform 100 with first step-length, revolution moves first step-length, described distance measuring sensor 300 measured first front distances compare in current distance that described distance measuring sensor 300 is measured and the last position, if current distance is less than first front distance, then show rotatable platform 100 at present just towards the distance measuring sensor 300 measured minimum directions of distance are rotated, continuing on the overbending direction of the described first bending part 30a with first step-length is that unit rotates described rotatable platform 100; If current distance is greater than first front distance, it is excessive to show that then rotatable platform 100 rotates, control described rotatable platform 100 rollbacks to last position, this position promptly makes the minimum position of distance to the first bending part 30a of bending member that distance measuring sensor 300 is measured in the regulative mode for this reason; If current distance equals first front distance, then show the minimum position of distance that rotatable platform 100 residing positions make for this reason that promptly distance measuring sensor 300 is measured in the regulative mode, control described rotatable platform 100 and remain on current location.
Preferably, describedly make measured may further comprise the steps to the I of the distance of the described first bending part 30a of described distance measuring sensor 300: after bending member bends, write down the measured initial distance of described distance measuring sensor 300 to the first bending part 30a of described bending member, and on the overbending direction of the described first bending part 30a, be that unit rotates described rotatable platform 100 with second step-length, revolution moves second step-length, described distance measuring sensor 300 measured first front distances compare in current distance that described distance measuring sensor 300 is measured and the last position, if current distance is less than first front distance, then show rotatable platform 100 at present just towards the distance measuring sensor 300 measured minimum directions of distance are rotated, continuing on the overbending direction of the described first bending part 30a with second step-length is that unit rotates described rotatable platform 100; If current distance is more than or equal to first front distance, it is excessive to show that then rotatable platform 100 rotates, being controlled on the direction opposite with the overbending direction of the described first bending part 30a with the 3rd step-length less than described second step-length is that unit rotates described rotatable platform 100, revolution moves the 3rd step-length, described distance measuring sensor 300 measured first front distances compare in current distance that described distance measuring sensor 300 is measured and the last position, if current distance is less than first front distance, it is still excessive to show that then rotatable platform 100 rotates, and continuing on the direction opposite with the overbending direction of the described first bending part 30a with the 3rd step-length is that unit rotates described rotatable platform 100; If current distance, shows then that rotatable platform 100 rollbacks are excessive greater than first front distance, control described rotatable platform 100 rollbacks to last position, and remain on this position; If current distance equals first front distance, show that then rotatable platform 100 residing positions are the minimum position of distance that makes that distance measuring sensor 300 is measured, control described rotatable platform 100 and remain on current location.
Bending angle measurement scheme of the present invention is compared with similar scheme, has the following advantages:
(1) system is simple, and measuring principle is simple.Only need distance measuring sensor, angular transducer, stepper motor and control device.Only need find distance measuring sensor to get final product during measurement to the minimum range of bending member.And, in operation process, do not influence measurement owing to be noncontacting measurement.
(2) certainty of measurement height, the precision of distance measuring sensor can arrive micron order, and the precision of angular transducer can arrive 0.02 °, and the stepper motor precision can arrive 0.02 ° of step angle and 250 segmentations.
(3) adopt the high minimum range searching method of efficient, can realize the accurate location of distance measuring sensor and measurement in real time.
Though the present invention is disclosed by the foregoing description, yet the foregoing description is not that any the technical staff in the technical field of the invention without departing from the spirit and scope of the present invention, should do various changes and modification in order to qualification the present invention.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.
Claims (11)
1. the bending angle measurement device of a bending member, this bending member comprises first bending part (30a) and second bending part (30b) that lays respectively at both sides, bending member inflection point, this equipment comprises:
Rotatable platform (100);
Drive unit (400) with described rotatable platform (100) mechanical connection, is used to drive described rotatable platform (100) and rotates at the overbending direction of first bending part (30a) of described bending member;
Angular transducer (200) is used to measure the rotational angle of described rotatable platform (100);
Distance measuring sensor (300) is fixed on the described rotatable platform (100), is used to measure the distance of this distance measuring sensor (300) to first bending part (30a) of described bending member; And
Control device (500), with described angular transducer (200), distance measuring sensor (300) and drive unit (400) are electrically connected, be used for according to the distance between first bending part (30a) of distance measuring sensor (300) and described bending member, control described drive unit (400) and drive the overbending direction rotation of described rotatable platform (100) at first bending part (30a) of described bending member, minimum until the distance that described distance measuring sensor (300) is measured to first bending part (30a) of described bending member, with the rotational angle of described angular transducer (200) institute sensing bending angle, and calculate the bending angle of described bending member at least according to this bending angle as first bending part (30a) of described bending member.
2. bending angle measurement device according to claim 1, wherein, the bending angle of described bending member is 2 times of bending angle of first bending part (30a) of described bending member.
3. bending angle measurement device according to claim 1, wherein, this equipment also comprises another group rotatable platform, drive unit, angular transducer and the distance measuring sensor at second bending part (30b) setting of described bending member, described control device (500) also calculates the bending angle of second bending part (30b) of described bending member, and with the bending angle addition of first bending part (30a) of this bending angle and described bending member, to draw the bending angle of described bending member.
4. equipment according to claim 1, wherein, described distance measuring sensor (300) is ultrasonic ranging sensor, laser range sensor or infrared distance measuring sensor, and described angular transducer (200) is for being fixed in the obliquity sensor on the described rotatable platform (100).
5. equipment according to claim 1, wherein, described drive unit (400) is a stepper motor.
6. equipment according to claim 1, wherein, described drive unit (400) is that worm and gear is connected or gear connects with the mechanical connection of described rotatable platform (100).
7. one kind is used for method that the bending angle of bending member is measured, and this bending member comprises first bending part (30a) and second bending part (30b) that lays respectively at both sides, bending member inflection point, and wherein, this method comprises:
Distance measuring sensor (300) is fixed on the rotatable platform (100);
Before described bending member bends, regulate described rotatable platform (100), make vertical first bending part (30a) of described distance measuring sensor (300) over against described bending member;
After described bending member bends, overbending direction at first bending part (30a) of described bending member rotates described rotatable platform (100), makes the measured distance to first bending part (30a) of described bending member of described distance measuring sensor (300) minimum; And
Measure the rotational angle of described rotatable platform (100),, and calculate the bending angle of described bending member at least according to this bending angle with the bending angle of this rotational angle as first bending part (30a) of described bending member.
8. method according to claim 7, wherein, the bending angle of described bending member is 2 times of bending angle of first bending part (30a) of described bending member.
9. method according to claim 7, wherein, described method also comprises:
Measure the bending angle of second bending part (30b) of described bending member; And
With the bending angle addition of this bending angle and described first bending part (30a), to draw the bending angle of described bending member.
10. method according to claim 7, wherein, described make described distance measuring sensor (300) measured to may further comprise the steps of described first bending part (30a) apart from minimum:
After bending member bends, write down described distance measuring sensor, (300) measured to described first bending part, initial distance (30a), and at described first bending part, be that unit rotates described rotatable platform with first step-length on the overbending direction (30a), (100), revolution moves first step-length, with described distance measuring sensor, (300) measured to described first bending part, described distance measuring sensor in current distance (30a) and the last position, (300) measured to described first bending part, first front distance (30a) compares
If it is that unit rotates described rotatable platform (100) that current distance less than first front distance, then continues on the overbending direction of described first bending part (30) with first step-length;
If current distance, is then controlled described rotatable platform (100) rollback greater than first front distance to last position, and remains on this position;
If current distance equals first front distance, then control described rotatable platform (100) and remain on current location.
11. method according to claim 7, wherein, described make described distance measuring sensor (300) measured to may further comprise the steps of described first bending part (30a) apart from minimum:
After bending member bends, write down described distance measuring sensor, (300) measured to described first bending part, initial distance (30a), and at described first bending part, be that unit rotates described rotatable platform with second step-length on the overbending direction (30a), (100), revolution moves second step-length, with described distance measuring sensor, (300) measured to described first bending part, described distance measuring sensor in current distance (30a) and the last position, (300) measured to described first bending part, first front distance (30a) compares
If it is that unit rotates described rotatable platform (100) that current distance less than first front distance, then continues on the overbending direction of described first bending part (30a) with second step-length;
If current distance is more than or equal to first front distance, then with described first bending part, be that unit rotates described rotatable platform with the 3rd step-length on the opposite direction of overbending direction (30a) less than described second step-length, (100), revolution moves the 3rd step-length, with described distance measuring sensor, (300) measured to described first bending part, described distance measuring sensor in current distance (30a) and the last position, (300) measured to described first bending part, first front distance (30a) compares
If it is that unit rotates described rotatable platform (100) that current distance less than first front distance, then continues on the direction opposite with the overbending direction of described first bending part (30a) with the 3rd step-length;
If current distance, is then controlled described rotatable platform (100) rollback greater than first front distance to last position, and remains on this position;
If current distance equals first front distance, then control described rotatable platform (100) and remain on current location.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010579352 CN102120230B (en) | 2010-12-03 | 2010-12-03 | Device and method for measuring bending angle of bent piece |
| PCT/CN2011/073765 WO2012071850A1 (en) | 2010-12-03 | 2011-05-06 | Device and method for measuring bending angle of bending piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010579352 CN102120230B (en) | 2010-12-03 | 2010-12-03 | Device and method for measuring bending angle of bent piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102120230A true CN102120230A (en) | 2011-07-13 |
| CN102120230B CN102120230B (en) | 2012-12-05 |
Family
ID=44248948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010579352 Active CN102120230B (en) | 2010-12-03 | 2010-12-03 | Device and method for measuring bending angle of bent piece |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102120230B (en) |
| WO (1) | WO2012071850A1 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927958A (en) * | 2012-11-27 | 2013-02-13 | 南京埃斯顿自动化股份有限公司 | Real-time automatic measuring device of bending angle of bending machine |
| WO2013023355A1 (en) * | 2011-08-15 | 2013-02-21 | 长沙中联重工科技发展股份有限公司 | Method and device for measuring opening angle of unfolded component of engineering machinery |
| CN103063188A (en) * | 2013-01-01 | 2013-04-24 | 胡竟湘 | Method and device of elbow pipe angle detection |
| CN103438835A (en) * | 2013-08-23 | 2013-12-11 | 中联重科股份有限公司 | Plate bending angle detection device and method |
| CN103487332A (en) * | 2013-09-26 | 2014-01-01 | 无锡俊达测试技术服务有限公司 | Device for testing bending resistance of objects |
| CN103817171A (en) * | 2013-11-21 | 2014-05-28 | 成都发动机（集团）有限公司 | Method for measuring angle of bending for die pressing bending forming of sheet metal parts of composite boards |
| CN104582867A (en) * | 2012-06-18 | 2015-04-29 | 特鲁普机械奥地利有限公司及两合公司 | Bending press having an angle-measuring device and method for determining the bending angle |
| CN107923738A (en) * | 2015-05-28 | 2018-04-17 | 柯巴股份公司 | Electronics angle measurement unit for angle of bend between bending machine, sheet material measurement arm |
| CN108151676A (en) * | 2017-12-27 | 2018-06-12 | 福建省永正工程质量检测有限公司 | A kind of construction and installation bending machine bending angle detection device |
| CN109443261A (en) * | 2018-10-12 | 2019-03-08 | 维沃移动通信有限公司 | The acquisition methods and mobile terminal of Folding screen mobile terminal folding angles |
| CN109751958A (en) * | 2018-12-21 | 2019-05-14 | 江苏集萃智能制造技术研究所有限公司 | A kind of tube type bus trajectory measurement method |
| CN111966162A (en) * | 2019-05-20 | 2020-11-20 | 华为技术有限公司 | Angle measuring method and electronic equipment |
| CN112058957A (en) * | 2020-08-21 | 2020-12-11 | 李玉强 | Multi-angle limiter for bending machine |
| CN112304251A (en) * | 2019-08-02 | 2021-02-02 | 三赢科技（深圳）有限公司 | Angle detection device and angle detection method |
| CN114472647A (en) * | 2021-12-31 | 2022-05-13 | 安徽众盛兴自动化设备有限公司 | Multi-process bending device for steel plate |
| WO2022146291A1 (en) * | 2020-12-31 | 2022-07-07 | Dener Mak. San.Ve Tic. Ltd. Sti. | A workpiece bending angle measurement device |
| CN115156425A (en) * | 2022-06-29 | 2022-10-11 | 江苏中海重型机床有限公司 | Feeding equipment capable of achieving automatic turn-over effect for numerical control bending machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01199104A (en) * | 1988-02-04 | 1989-08-10 | Amada Co Ltd | Apparatus for detecting bending angle of plate material in bender |
| US5285668A (en) * | 1990-02-16 | 1994-02-15 | Kabushiki Kaisha Komatsu Seisakusho | System for detecting bending angle for press brake |
| CN1216103A (en) * | 1996-02-13 | 1999-05-05 | 阿玛达美都丽股份有限公司 | Angle detection method for bending machine, angle detection apparatus and angle sensor |
| WO2002003026A1 (en) * | 2000-07-04 | 2002-01-10 | Fastcom Technology S.A. | System and method for angle measurement |
| CN2557262Y (en) * | 2002-06-27 | 2003-06-25 | 南京埃斯顿工业自动化有限公司 | Real time on-line angle automatic metering device in bending |
| JP2010043918A (en) * | 2008-08-11 | 2010-02-25 | Murata Machinery Ltd | Angle measurement instrument and pressing machine with the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60247415A (en) * | 1984-05-24 | 1985-12-07 | Mitsubishi Electric Corp | Device for controlling bending angle of press brake |
| EP0166351A3 (en) * | 1984-06-27 | 1986-09-17 | Arnold Stucki | Device at a machine for deformation work of sheet metals |
| JP2818424B2 (en) * | 1988-11-25 | 1998-10-30 | 株式会社アマダ | Bending angle detector for bending machine |
| IT1260892B (en) * | 1993-02-23 | 1996-04-29 | Prima Ind Spa | DEVICE TO MEASURE THE CORNER OF A PIECE, IN PARTICULAR THE CORNER OF BENDING A PIECE OF SHEET METAL. |
-
2010
- 2010-12-03 CN CN 201010579352 patent/CN102120230B/en active Active
-
2011
- 2011-05-06 WO PCT/CN2011/073765 patent/WO2012071850A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01199104A (en) * | 1988-02-04 | 1989-08-10 | Amada Co Ltd | Apparatus for detecting bending angle of plate material in bender |
| US5285668A (en) * | 1990-02-16 | 1994-02-15 | Kabushiki Kaisha Komatsu Seisakusho | System for detecting bending angle for press brake |
| CN1216103A (en) * | 1996-02-13 | 1999-05-05 | 阿玛达美都丽股份有限公司 | Angle detection method for bending machine, angle detection apparatus and angle sensor |
| WO2002003026A1 (en) * | 2000-07-04 | 2002-01-10 | Fastcom Technology S.A. | System and method for angle measurement |
| CN2557262Y (en) * | 2002-06-27 | 2003-06-25 | 南京埃斯顿工业自动化有限公司 | Real time on-line angle automatic metering device in bending |
| JP2010043918A (en) * | 2008-08-11 | 2010-02-25 | Murata Machinery Ltd | Angle measurement instrument and pressing machine with the same |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013023355A1 (en) * | 2011-08-15 | 2013-02-21 | 长沙中联重工科技发展股份有限公司 | Method and device for measuring opening angle of unfolded component of engineering machinery |
| CN104582867A (en) * | 2012-06-18 | 2015-04-29 | 特鲁普机械奥地利有限公司及两合公司 | Bending press having an angle-measuring device and method for determining the bending angle |
| CN104582867B (en) * | 2012-06-18 | 2016-08-24 | 特鲁普机械奥地利有限公司及两合公司 | Including the bullodozer of angle detection device and for the method determining angle of bend |
| US9664493B2 (en) | 2012-06-18 | 2017-05-30 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending press having an angle-measuring device and method for determining the bending angle |
| CN102927958A (en) * | 2012-11-27 | 2013-02-13 | 南京埃斯顿自动化股份有限公司 | Real-time automatic measuring device of bending angle of bending machine |
| CN102927958B (en) * | 2012-11-27 | 2015-11-18 | 南京埃斯顿自动化股份有限公司 | Bender bending angle real time automatic measuring device |
| CN103063188A (en) * | 2013-01-01 | 2013-04-24 | 胡竟湘 | Method and device of elbow pipe angle detection |
| CN103438835A (en) * | 2013-08-23 | 2013-12-11 | 中联重科股份有限公司 | Plate bending angle detection device and method |
| CN103438835B (en) * | 2013-08-23 | 2016-06-08 | 中联重科股份有限公司 | A kind of sheet metal bending angle detection device and method |
| CN103487332A (en) * | 2013-09-26 | 2014-01-01 | 无锡俊达测试技术服务有限公司 | Device for testing bending resistance of objects |
| CN103817171A (en) * | 2013-11-21 | 2014-05-28 | 成都发动机（集团）有限公司 | Method for measuring angle of bending for die pressing bending forming of sheet metal parts of composite boards |
| CN107923738A (en) * | 2015-05-28 | 2018-04-17 | 柯巴股份公司 | Electronics angle measurement unit for angle of bend between bending machine, sheet material measurement arm |
| CN108151676A (en) * | 2017-12-27 | 2018-06-12 | 福建省永正工程质量检测有限公司 | A kind of construction and installation bending machine bending angle detection device |
| CN109443261A (en) * | 2018-10-12 | 2019-03-08 | 维沃移动通信有限公司 | The acquisition methods and mobile terminal of Folding screen mobile terminal folding angles |
| CN109443261B (en) * | 2018-10-12 | 2020-09-15 | 维沃移动通信有限公司 | Method for acquiring folding angle of folding screen mobile terminal and mobile terminal |
| CN109751958A (en) * | 2018-12-21 | 2019-05-14 | 江苏集萃智能制造技术研究所有限公司 | A kind of tube type bus trajectory measurement method |
| CN111966162A (en) * | 2019-05-20 | 2020-11-20 | 华为技术有限公司 | Angle measuring method and electronic equipment |
| CN112304251A (en) * | 2019-08-02 | 2021-02-02 | 三赢科技（深圳）有限公司 | Angle detection device and angle detection method |
| TWI736972B (en) * | 2019-08-02 | 2021-08-21 | 新煒科技有限公司 | Angle detecting device and angle detecting method |
| US11555695B2 (en) | 2019-08-02 | 2023-01-17 | Triple Win Technology (Shenzhen) Co. Ltd. | Angle detecting device and angle detecting method |
| CN112058957A (en) * | 2020-08-21 | 2020-12-11 | 李玉强 | Multi-angle limiter for bending machine |
| WO2022146291A1 (en) * | 2020-12-31 | 2022-07-07 | Dener Mak. San.Ve Tic. Ltd. Sti. | A workpiece bending angle measurement device |
| CN114472647A (en) * | 2021-12-31 | 2022-05-13 | 安徽众盛兴自动化设备有限公司 | Multi-process bending device for steel plate |
| CN115156425A (en) * | 2022-06-29 | 2022-10-11 | 江苏中海重型机床有限公司 | Feeding equipment capable of achieving automatic turn-over effect for numerical control bending machine |
| CN115156425B (en) * | 2022-06-29 | 2024-01-23 | 江苏中海重型机床有限公司 | Feeding equipment capable of realizing self-turning effect for numerical control bending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012071850A1 (en) | 2012-06-07 |
| CN102120230B (en) | 2012-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102120230B (en) | Device and method for measuring bending angle of bent piece | |
| CN202018279U (en) | Bending angle measuring equipment for bending element | |
| CN101334267B (en) | Digital image feeler vector coordinate transform calibration and error correction method and its device | |
| CN102519510B (en) | Calibration device and calibration method of position sensitive sensor | |
| CN1719192A (en) | Bidimension photoelectric self collimating device based on optical length multiplication compensation method and its measuring method | |
| CN102368162A (en) | Tracking system of large-angle fast steering mirror | |
| CN110987013A (en) | Method and device for calibrating gyroscope angular motion measurement system | |
| CN101261119B (en) | Light beam parallelism and collimating fault checking method | |
| CN103162712B (en) | The crooked compensation method of Circular gratings angle measurement deviation processing and axle system | |
| CN102878933B (en) | Comparator based on white light interference positioning principle and detection method thereof | |
| CN117433478B (en) | Guide rail parallelism detection robot and detection method | |
| CN100458361C (en) | Dip meter zero and sensitivity temperature compensator and compensating method thereof | |
| CN108362493B (en) | A kind of numerically-controlled machine tool linear axis angular errors rapid detection method | |
| CN205002742U (en) | Hoist laser detector of rectifying | |
| US5052117A (en) | Apparatus for measuring gear | |
| CN101446491B (en) | Error detection device of electronic reading system of digital level and detection method thereof | |
| CN105758339B (en) | Optical axis and object plane measuring for verticality method based on geometric error correction technique | |
| CN109959501B (en) | System and method for testing internal orientation elements and distortion of optical remote sensor | |
| CN105841636B (en) | Optical axis and object plane measuring for verticality method based on parts moving linearly error compensation | |
| CN113340403B (en) | Rotating shaft radial vibration measuring method based on circumferential stripes and linear array camera | |
| CN102426096B (en) | Detection system of feeding precision of revolving body special-shaped curve mechanism and detection method thereof | |
| CN208998755U (en) | A kind of elevator rail planeness detection system based on multistage optical lever | |
| CN107238353B (en) | A kind of rotation angle measuring method based on primary standard of curved surface part | |
| CN207424259U (en) | Digitize three direction displacement measuring device | |
| CN106017416B (en) | Level gage i angle monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410013 No. 361 South silver basin, Hunan, Changsha Applicant after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Applicant before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |