CN1932439A - Shedding profilogram measuring apparatus - Google Patents
Shedding profilogram measuring apparatus Download PDFInfo
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- CN1932439A CN1932439A CN 200610085857 CN200610085857A CN1932439A CN 1932439 A CN1932439 A CN 1932439A CN 200610085857 CN200610085857 CN 200610085857 CN 200610085857 A CN200610085857 A CN 200610085857A CN 1932439 A CN1932439 A CN 1932439A
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- shedding cam
- bearing pin
- laser range
- roller follower
- shedding
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Abstract
A measurement mechanism for the profile curve of the open cam includes the installation platform, the servo electric engine installed in the platform, the open cam connected with the output shaft of the servo electric engine. The sliding slot opened on the platform is installed with the pin roll which is set with the roller follower; the spring is set in the sliding slot which provides the pressure for the pin roll to make the outside of the roller follower close to the profile surface of the open cam. The pin roll is set with the viewfinder; the sensor frame is set on the installation platform which is set with the laser ranging sensor. The roller follower moves with the pin roll in the sliding slot following the radius change of the part contacting of the open cam and the roller follower. The beam emitted by the laser ranging sensor is reflected by the viewfinder, so it computes the location change of the pin roll from the round-trip time of the laser to measure the radius change of the open cam profile surface.
Description
Technical field
The present invention relates to the device that a kind of contour curve that is used on the air-jet loom the shedding cam of shedding mechanism detects.
Background technology
In the prior art, opening features is the maximum parts of fault on the air-jet loom, the fault amount account for air-jet loom the fault total amount 80%, and shedding cam is the motor of opening features, if the shedding cam manufacturing accuracy is low, will when work, produce vibration, make the heald frame of air-jet loom produce vibration.Detection difficult point about the shedding cam quality has three, the one, cam return three-sixth turn (°), every degree (°) require accurate positioning, accuracy requirement is to dividing (') second ("); The 2nd, every degree is a footpath value of corresponding cam all, 0.01～0.02 millimeter of each accuracy requirement that directly is worth; The 3rd, determine zero point, the manufacturing of shedding cam all has a starting point, and the starting point of shedding cam is adjacent thereto manyly to differ less than 0.01 millimeter, therefore on the value in the footpath, the instrument that lacks the shedding cam radius of measuring air-jet loom, the just very difficult actual manufacturing accuracy of determining shedding cam.
Summary of the invention
The object of the invention provides a kind of contour curve measurement mechanism of shedding cam, and it can detect the manufacturing accuracy of the contour curve of shedding cam.
Technical scheme of the present invention is: a kind of contour curve measurement mechanism of shedding cam, comprise mounting platform, be arranged at the servomotor on the described mounting platform, the shedding cam that is in transmission connection mutually with the output shaft of described servomotor, have sliding tray on the described mounting platform, be mounted slidably bearing pin in the described sliding tray, be coaxially arranged with roller follower on the described bearing pin, the axial line of described roller follower parallels with the axial line of the rotating shaft of shedding cam, also be provided with spring in the described sliding tray, described spring provides snap-in force to bearing pin, the external peripheral surface of roller follower and the contour surface of shedding cam are offseted, described bearing pin is provided with reflective mirror, described mounting platform is provided with sensor frame, described sensor frame is provided with laser range sensor, the light of described laser range sensor emission is reflected by reflective mirror, measures the distance between bearing pin and the laser range sensor thus.
Have pilot hole on the described shedding cam, be provided with register pin in the described pilot hole, described sensor frame is provided with the angle measurement degree sensor of the rotational angle of measurement and positioning pin.
Described laser range sensor is electrically connected with the calculation unit, and the data transmission that described laser range sensor is gathered is given the calculation unit, carries out signal analysis and processing by described calculation unit.
The present invention compared with prior art, have following advantage: the driven by servomotor shedding cam rotates, when shedding cam rotates, the external peripheral surface of roller follower is against on the contour surface of shedding cam, along with shedding cam and the change in radius contacted part of roller follower, the roller follower band bearing pin and is moved in sliding tray, the gyration of shedding cam promptly is converted to the straight moving of roller follower and bearing pin, when the bearing pin moving linearly, the relative mounting platform stationkeeping of laser range sensor, laser range sensor receives the reflected light of reflective mirror, the change in location situation that can calculate bearing pin two-way time from laser, calculate the change in radius situation of the contour surface of shedding cam with this, thereby can check the manufacturing accuracy of the contour surface of shedding cam whether to adhere to specification, so that the building block of air-jet loom shedding mechanism is carried out technological improvement.
Description of drawings
Accompanying drawing 1 is the vertical view of shedding cam;
Accompanying drawing 2 is the lifting curve exemplary plot of shedding cam;
Accompanying drawing 3 is the actual measurement profile theory curve of shedding cam;
Accompanying drawing 4 is a main TV structure synoptic diagram of the present invention;
Accompanying drawing 5 is the schematic top plan view of each parts on mounting platform of the present invention and its;
Accompanying drawing 6 is the clamping structural drawing of shedding cam;
The synoptic diagram of accompanying drawing 8 laser ranging structures of the present invention;
Wherein: 1, servomotor; 2, mounting platform; 3, shedding cam; 4, roller follower; 5, spring; 6, laser range sensor; 7, amplifying unit; 8, analog to digital converter; 9, calculation unit; 10, computing machine; 11, laser; 12, sliding tray; 13, disk; 14, nut; 15, pad; 16, pilot hole; 17, register pin; 18, angle measurement degree sensor; 19, bearing pin; 20, reflective mirror; 21, sensor frame.
Embodiment
Shown in accompanying drawing 4-accompanying drawing 5, a kind of contour curve measurement mechanism of shedding cam, the shedding cam 3 that comprises mounting platform 2, is arranged at servomotor 1 on the described mounting platform 2, is in transmission connection mutually with the output shaft of described servomotor 1, the output shaft of servomotor 1 is connected with disk 13, the top of disk 13 is stretched in the endoporus of shedding cam 3, shedding cam 3 by nut 14 and pad 15 clampings on disk 13, shown in accompanying drawing 6.
Have sliding tray 12 on the described mounting platform 2, be provided with bearing pin 19 in the described sliding tray 12, bearing pin 19 can slide along the cell wall of sliding tray 12, be coaxially arranged with roller follower 4 on the described bearing pin 11, the axial line of described roller follower 4 parallels with the axial line of the rotating shaft of shedding cam 3, also be provided with spring 5 in the described sliding tray 12, this spring 5 is a stage clip, 5 pairs of bearing pins 19 of described spring provide snap-in force, and the external peripheral surface of roller follower 4 and the contour surface of shedding cam 3 are offseted.
The characteristics of motion of the shedding cam 3 in the air-jet loom harness motion adopts cosine curve (shown in accompanying drawing 1) or cycloidal curve morely, and the expression formula of curve is as follows:
In the formula:
R
bThe base radius of expression shedding cam 3;
H represents the lift of shedding cam 3;
Φ
oCam angle when the lift of expression shedding cam 3 is H.
Cam mechanism on the air-jet loom is the driving mechanism of the whole open loop system of air-jet loom, in order to realize the harness motion of the heald frame on the air-jet loom.Usually air-jet loom adopts cam swing mechanism that the rotation of shedding cam 3 is converted into the to-and-fro movement of heald frame, and promptly shedding cam 3 passes to heald frame to motion by oscillating follower, and the contour curve of measuring shedding cam 3 promptly is the gordian technique of air-jet loom.Be the measured contour curve exemplary plot of shedding cam 3 shown in the accompanying drawing 3, continuous smooth curve A represents the contour curve of surveying among the figure, continuous smooth curve B represents the first difference curve of contour curve, curve C is represented the second order difference curve of contour curve, as shown in Figure 3, the second order difference curve C is a curve of cyclical fluctuations, the purpose of precision measurement is exactly to measure the departure degree of the contour curve theory of correspondences curve of the shedding cam 3 that processes, and the degree of fluctuation of second order difference curve has promptly reflected the machining precision of shedding cam 3.
Shown in accompanying drawing 8, described bearing pin 19 is provided with reflective mirror 20, in preferred embodiment of the present invention, makes one flat on the external peripheral surface of bearing pin 19, and reflective mirror 20 sticks on this flat.Described mounting platform 2 is provided with sensor frame 21, described sensor frame 21 is provided with laser range sensor 6, the light of described laser range sensor 6 emissions is reflected by reflective mirror 20, measures the distance between bearing pin 19 and the laser range sensor 6 thus.Servomotor 1 is opened the back and is driven disk 13 and shedding cam 3 rotations, roller follower 4 is subjected to the pressure of spring 5 and is against on the shedding cam 3, when shedding cam 3 rotates, along with shedding cam 3 and change in radius roller follower 4 contacted parts, roller follower 4 moves in sliding tray 12 with the cell wall of bearing pin 19 along sliding tray 12, and the reflective mirror 20 that is arranged on the bearing pin 19 promptly changes with bearing pin 19 occurrence positions.After arriving reflective mirror 20, the laser 11 that laser range sensor 6 sends is reflected back toward, reflected light is received by laser range sensor 6, according to the variable in distance that can draw two-way time of laser 11 between bearing pin 19 and the laser range sensor 6, because laser range sensor 6 relative mounting platform 2 stationkeeping are so can calculate the change in radius situation of the contour curve of shedding cam 3.
The applied servomotor 1 of the present invention need have high resolving power, its bearing accuracy＜30 second ("), repetitive positioning accuracy＜30 second (").Shedding cam 3 rotates directly and is driven by servomotor 1,1 time three-sixth turn of servomotor (°), because need to measure the numerical value of the corresponding theoretical radius of shedding cam 3 each degree, shedding cam 3 must stop on each degree, the bearing accuracy of every degree＜30 second.
Described laser range sensor 6 is electrically connected with calculation unit 9, and the data transmission that described laser range sensor 6 is gathered is given calculation unit 9, carries out signal analysis and processing by described calculation unit 9.Between laser range sensor 6 and calculation unit 9, also be provided with amplifying unit 7 and analog to digital converter 8, calculation unit 9 is connected on the computing machine 10, the signal of laser range sensor 6 outputs forms data-signal through amplifying unit 7 and analog to digital converter 8 backs, the data of the calculation 9 pairs of collections in unit are carried out signal analysis and processing, the final data signal is transferred in the computing machine 10, and demonstrates the contour curve figure (as shown in Figure 3) that records on the display screen of computing machine 10.
Shown in accompanying drawing 1, accompanying drawing 7, shedding cam 3 all has a starting point when making, and a pilot hole 16 is arranged, and determines zero point, the i.e. point of penetration of cutter when pilot hole 16 mainly is used in the processing shedding cam.And the present invention need use this pilot hole 16 when using, the register pin 17 of promptly in described pilot hole 16, packing into, described sensor frame 21 is provided with the angle measurement degree sensor 18 of the rotational angle of measurement and positioning pin 17, angle measurement degree sensor 18 is used to survey the angle position of register pin 17, and accompanying drawing 7 is promptly represented the angle measurement method of the POS INT point of shedding cam 3.
Claims (3)
1, a kind of contour curve measurement mechanism of shedding cam, comprise mounting platform (2), be arranged at the servomotor (1) on the described mounting platform (2), the shedding cam (3) that is in transmission connection mutually with the output shaft of described servomotor (1), it is characterized in that: have sliding tray (12) on the described mounting platform (2), be mounted slidably bearing pin (19) in the described sliding tray (12), be coaxially arranged with roller follower (4) on the described bearing pin (11), the axial line of described roller follower (4) parallels with the axial line of the rotating shaft of shedding cam (3), also be provided with spring (5) in the described sliding tray (12), described spring (5) provides snap-in force to bearing pin (19), the external peripheral surface of roller follower (4) and the contour surface of shedding cam (3) are offseted, described bearing pin (19) is provided with reflective mirror (20), described mounting platform (2) is provided with sensor frame (21), described sensor frame (21) is provided with laser range sensor (6), the light of described laser range sensor (6) emission is measured the distance between bearing pin (19) and the laser range sensor (6) thus by reflective mirror (20) reflection.
2, the contour curve measurement mechanism of shedding cam according to claim 1, it is characterized in that: have pilot hole (16) on the described shedding cam (3), be provided with register pin (17) in the described pilot hole (16), described sensor frame (21) is provided with the angle measurement degree sensor (18) of the rotational angle of measurement and positioning pin (17).
3, the contour curve measurement mechanism of shedding cam according to claim 1, it is characterized in that: described laser range sensor (6) is electrically connected with calculation unit (9), the data transmission that described laser range sensor (6) is gathered is given calculation unit (9), carries out signal analysis and processing by described calculation unit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100858573A CN100410625C (en) | 2006-06-02 | 2006-06-02 | Shedding profilogram measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100858573A CN100410625C (en) | 2006-06-02 | 2006-06-02 | Shedding profilogram measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932439A true CN1932439A (en) | 2007-03-21 |
| CN100410625C CN100410625C (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100858573A Expired - Fee Related CN100410625C (en) | 2006-06-02 | 2006-06-02 | Shedding profilogram measuring apparatus |
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| CN (1) | CN100410625C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639348B (en) * | 2008-12-30 | 2011-03-30 | 江苏万工科技集团有限公司 | Laser tester for cam profile |
| CN102116611A (en) * | 2011-03-04 | 2011-07-06 | 常州工学院 | Detection method for cam outline detection system |
| CN102252631A (en) * | 2011-05-04 | 2011-11-23 | 常州工学院 | Cam contour detecting system based on direct drive motor |
| CN102331220A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Non-roundness inner curve symmetry degree measurement instrument |
| CN102445184A (en) * | 2011-10-09 | 2012-05-09 | 陕西科技大学 | Laser distance measuring and height measuring device |
| CN102563919A (en) * | 2010-12-28 | 2012-07-11 | 北京应天阳光太阳能技术有限公司 | Solar furnace adopting self-spinning and elevation tracking mode |
| CN102589469A (en) * | 2012-02-07 | 2012-07-18 | 常州工学院 | Device for detecting profile of planar conjugate cam and control method thereof |
| CN102722139A (en) * | 2011-04-17 | 2012-10-10 | 丁仕燕 | Detection method of numerical control system for detecting contour of cam |
| CN102927929A (en) * | 2011-05-04 | 2013-02-13 | 常州工学院 | Detecting method for cam contour detecting system |
| CN102937419A (en) * | 2011-05-04 | 2013-02-20 | 常州工学院 | Cam profile detection system based on direct driving motor |
| CN102944189A (en) * | 2011-05-04 | 2013-02-27 | 常州工学院 | Detection method of cam profile detection system based on direct drive motor |
| CN105180810A (en) * | 2015-09-07 | 2015-12-23 | 华中科技大学 | Cam follower motion law calibration device and method |
| CN106643473A (en) * | 2016-12-27 | 2017-05-10 | 河北工业大学 | Automatic flatness detection device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1938231B2 (en) * | 1969-07-28 | 1979-10-11 | Hommelwerke Gmbh, 7220 Schwenningen | Device for determining the tolerance value of the shape curve of a cam |
| GB2148007B (en) * | 1983-10-01 | 1988-02-10 | Rolls Royce Motor Cars | Profile checking apparatus |
| JP3873806B2 (en) * | 2002-05-07 | 2007-01-31 | トヨタ自動車株式会社 | Cam profile determination device and cam profile determination method for three-dimensional cam |
| CN2618137Y (en) * | 2002-06-14 | 2004-05-26 | 北京中科恒业中自技术有限公司 | Cam spindle style comprehensive surface error determining instrument |
| CN2784877Y (en) * | 2005-04-26 | 2006-05-31 | 南京师范大学 | On-line detector for contour line of disk cam |
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2006
- 2006-06-02 CN CNB2006100858573A patent/CN100410625C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639348B (en) * | 2008-12-30 | 2011-03-30 | 江苏万工科技集团有限公司 | Laser tester for cam profile |
| CN102563919B (en) * | 2010-12-28 | 2013-12-11 | 北京应天阳光太阳能技术有限公司 | Solar furnace adopting self-spinning and elevation tracking mode |
| CN102563919A (en) * | 2010-12-28 | 2012-07-11 | 北京应天阳光太阳能技术有限公司 | Solar furnace adopting self-spinning and elevation tracking mode |
| CN102116611A (en) * | 2011-03-04 | 2011-07-06 | 常州工学院 | Detection method for cam outline detection system |
| CN102116611B (en) * | 2011-03-04 | 2012-03-21 | 常州工学院 | Detection method for cam outline detection system |
| CN102722139A (en) * | 2011-04-17 | 2012-10-10 | 丁仕燕 | Detection method of numerical control system for detecting contour of cam |
| CN102722139B (en) * | 2011-04-17 | 2013-12-04 | 丁仕燕 | Detection method of numerical control system for detecting contour of cam |
| CN102927929B (en) * | 2011-05-04 | 2015-05-27 | 常州工学院 | Detecting method for cam contour detecting system |
| CN102927929A (en) * | 2011-05-04 | 2013-02-13 | 常州工学院 | Detecting method for cam contour detecting system |
| CN102937419A (en) * | 2011-05-04 | 2013-02-20 | 常州工学院 | Cam profile detection system based on direct driving motor |
| CN102944189A (en) * | 2011-05-04 | 2013-02-27 | 常州工学院 | Detection method of cam profile detection system based on direct drive motor |
| CN102252631A (en) * | 2011-05-04 | 2011-11-23 | 常州工学院 | Cam contour detecting system based on direct drive motor |
| CN102937419B (en) * | 2011-05-04 | 2015-05-27 | 常州工学院 | Cam profile detection system based on direct driving motor |
| CN102331220A (en) * | 2011-07-19 | 2012-01-25 | 大连液压件有限公司 | Non-roundness inner curve symmetry degree measurement instrument |
| CN102445184A (en) * | 2011-10-09 | 2012-05-09 | 陕西科技大学 | Laser distance measuring and height measuring device |
| CN102589469A (en) * | 2012-02-07 | 2012-07-18 | 常州工学院 | Device for detecting profile of planar conjugate cam and control method thereof |
| CN102589469B (en) * | 2012-02-07 | 2013-11-06 | 常州工学院 | Device for detecting profile of planar conjugate cam and control method thereof |
| CN105180810A (en) * | 2015-09-07 | 2015-12-23 | 华中科技大学 | Cam follower motion law calibration device and method |
| CN105180810B (en) * | 2015-09-07 | 2017-10-27 | 华中科技大学 | The caliberating device and method of a kind of cam follower motion rule |
| CN106643473A (en) * | 2016-12-27 | 2017-05-10 | 河北工业大学 | Automatic flatness detection device and method |
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| CN100410625C (en) | 2008-08-13 |
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Granted publication date: 20080813 Termination date: 20110602 |