CN102645182A - Surface profile scanning type workpiece precut part weighing device - Google Patents
Surface profile scanning type workpiece precut part weighing device Download PDFInfo
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- CN102645182A CN102645182A CN2012101121752A CN201210112175A CN102645182A CN 102645182 A CN102645182 A CN 102645182A CN 2012101121752 A CN2012101121752 A CN 2012101121752A CN 201210112175 A CN201210112175 A CN 201210112175A CN 102645182 A CN102645182 A CN 102645182A
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Abstract
The invention relates to a surface profile scanning type workpiece precut part weighing device. The practicability of the existing device is not high and the accuracy is comparatively low. The surface profile scanning type workpiece precut part weighing device comprises a digital controller, laser displacement sensors, a scanning stepping motor, a feeding stepping motor, supports and a feeding table. The laser displacement sensors are installed on the supports on the two sides of a workpiece and are driven by the scanning stepping motor. The moving direction of the scanning stepping motor is in parallel with the longitudinal section of the workpiece. The feeding table is driven by the feeding stepping motor and is used for feeding the workpiece. The laser displacement sensors, the scanning stepping motor and the feeding stepping motor are connected with the digital controller through signals. The surface profile scanning type workpiece precut part weighing device has the advantages that the workpiece is not damaged and the long-term measurement is facilitated; by adopting a laser ranging technique, the speed is fast, the efficiency is high, the requirement on the environment is not strict and the measurement under all kinds of working conditions is facilitated; and the structure of the device is simple and the accuracy is higher than the accuracy of manual measurement.
Description
Technical field
The present invention relates to the preparatory intercepting part of a kind of workpiece weighing device, particularly a kind of weighing device that adopts the preparatory intercepting part of workpiece of surface profile scan rebuilding.
Background technology
In some field of industrial processes, workpiece to be processed requires to meet certain requirement on weight, such as in 3%, this just requires before processing work, to increase the device of judging workpiece weight.The workpiece of rule is generally cylindrical, and weight at this moment requires can guarantee according to Workpiece length for the workpiece of irregular size, how to guarantee that the workpiece weight of cutting meets the requirements that key is how to measure the volume of irregularly shaped object.
Because the scrambling of cutting material, the volume that how to obtain cutting material also is a difficult problem.Volume measuring method mainly contains two kinds of contact type measurement method and non-contact type measuring methods.Manual measurement is arranged contact type measurement and based on the measurement of Archimedes principle, the manual measurement workload is big, drops into that human and material resources are more, practicality is very poor, and precision is also lower.The volume measuring instrument of the patent arbitrary shape workpiece of publication number CN1423111 is based on Archimedes principle, and the weight of utilizing object in water, to alleviate equals object and arranges the weight with water by volume.Non-cpntact measurement has image measurement method and laser imaging method.A kind of volume measurement device and measuring method thereof based on image of the patent of publication number CN101266131 is based on the image measurement method, utilizes three cameras being arranged on the objective table to record the three-dimensional data of testee, obtains the actual volume of testee then.The cubing error of image measurement method is bigger, is not suitable for being applied to the higher occasion of accuracy requirement, and cost is not suitable for the widespread use on the band sawing machine than higher yet.Adopt laser displacement sensor, come volume calculated, realize simply well realizing accuracy requirement through measuring the irregularly shaped object cross-sectional area.
Summary of the invention
The object of the present invention is to provide a kind of accurate weighing device to the preparatory intercepting part of workpiece; Be that a kind of to obtain two-dimensional section long-pending through surface of the work section of outline direction being carried out from top to bottom line area accumulation, then the workpiece feedstock direction carried out the long-pending measurement mechanism that obtains the 3 D workpiece quality of two-dimensional section accumulation; Be a kind of integrated workpiece profile surface twice one dimension laser ranging, non-contact measurement apparatus of stepper drive and charging stepper drive up and down.
The technical scheme that technical solution problem of the present invention is adopted is:
The preparatory intercepting part of surface profile scan-type workpiece weighing device comprises digital controller, laser displacement sensor, scanning stepper motor, feeding stepper motor, support and feeding table.On the support of the both sides of workpiece, laser displacement sensor is housed, laser displacement sensor is by the scanning step motor drive, and the direction of motion of scanning stepper motor is parallel with the workpiece longitudinal section; Feeding table is used for the feeding workpiece by the feeding step motor drive; Laser displacement sensor, the scanning stepper motor all is connected with the digital controller signal with the feeding stepper motor.
Beneficial effect of the present invention: laser ranging technique can not cause damage to workpiece as a kind of contactless detection technique, is beneficial to permanent measurement; Laser ranging technique speed is fast, and efficient is high, and is not strict to environmental requirement, helps the measurement under various operating modes; Apparatus structure is simple, has higher degree of accuracy than manual measurement.According to the observation and the analysis of actual sawing process, adopt market existing two-dimensional workpiece scanning system, price is very expensive first; Second detect workpiece size scope also relatively limited (diameter is less than 100mm); Therefore, adopt the laser distance measuring principle of one dimension, cooperate xy shaft type Driven Dynamic scan pattern; Set up the three-dimensional dimension model of preparatory intercepting part, thereby obtain the weight prediction.
Description of drawings
Fig. 1 is the weighing device three-dimensional plot;
Fig. 2 is a weighing device system composition diagram;
Fig. 3 is weighing device control schematic diagram calculation;
Among the figure: 1. scan stepper motor; 2. slide rail; 3. slide rail base; 4. slide block; 5. laser pick-off window; 6. Laser emission window; 7. workpiece; 8. laser displacement sensor; 9. feeding stepper motor; 10. reducer casing; 11. head roll; 12. screw mandrel.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the present invention adopts the mode of surface profile scanning, and concrete two laser displacement sensors 8 of employing of realizing scan the left and right sides contoured surface of workpiece 7 respectively.Slide rail base 3 is installed in the both sides of feeding table respectively.Laser displacement sensor 8 is through being bolted on the slide block 4; Slide block 4 is installed on the slide rail 2, forms two moving sets with slide rail 2, and slide rail 2 is fixed on the slide rail base 3; In the middle of two slide rails 2 leading screw 12 is housed, the rotating shaft of scanning stepper motor 1 directly links to each other with leading screw 12.Screw mandrel 12 is connected with slide block 4 through ball screw assembly.The direction of motion of scanning stepper motor 1 is parallel with workpiece 7 longitudinal sections.Laser displacement sensor 8 is driven by scanning stepper motor 1; Translational speed at the uniform velocity; Make things convenient for laser displacement sensor 8 equidistantly to sample, triangulation is adopted in laser ranging, and Laser emission window 6 emission laser are to workpiece 7; Laser pick-off window 5 is surveyed the laser bright spot on the workpiece 7 and is calculated the distance of laser bright spot to laser displacement sensor 8, and Laser emission window 6, laser bright spot and laser pick-off window 5 have constituted the Delta Region.Advancing of workpiece 7 driven by head roll 11, and head roll 11 links to each other with reducer casing 10, and reducer casing 10 links to each other with feeding stepper motor 9, and reducer casing 10 provides and underspeeded, and increases the function of moment of torsion.When laser displacement sensor 8 scanned, feeding stepper motor 9 must stop, and treated that laser displacement sensor 8 accomplishes behind the single passes feeding stepper motor 9 segment distance that readvances.
As shown in Figure 2, digital controller is the core of system, is responsible for all computings.Laser displacement sensor, the scanning stepper motor all is connected with the digital controller signal with the feeding stepper motor.Digital controller gating pulse on the one hand sends the stepping drive signal to feeding stepper motor 9; Feeding stepper motor 9 is moved on feed direction; Stop behind each feeding 1mm, concrete feed distance can be adjusted according to realistic accuracy, after feeding stepper motor 9 stops; The digital controller gating pulse is sent the stepping drive signal and is given scanning stepper motor 1; Driven sweep stepper motor 1 at the uniform velocity moves up and down, and drives the equidistantly exterior contour of sampling workpiece 7 of laser displacement sensor 8, feeding stepper motor 9 1mm that readvances after sampling is accomplished.After each stepper drive, scanning stepper motor and feeding stepper motor all can be given the step-by-step counting of digital controller through encoder feedback.Digital controller links to each other with laser displacement sensor 8 on the other hand, receives the data that laser displacement sensor 8 collects in real time.The concrete calculating principle of device is described below: left and right sides airborne laser range finder spacing does
L, the left side viameter records distance (the viameter distance that A is ordered on workpiece)
l Y1, the right side viameter records distance (the viameter distance that B is ordered on workpiece)
l Y2, sustained height both sides, the workpiece cross section AB distance in a certain moment then
l yCan obtain by following formula:
Like this, the workpiece area of section in a certain moment
S(
i) can obtain through the axial little rectangular area integration stack of y, specifically can be expressed as:
In the formula,
mNumber of times for the y orientation measurement; Dy is the each feeding distance of scanning stepper motor.
For
xOn the direction
iInferior measurement is on the y direction
jThe distance value of inferior measurement.Therefore, the workpiece weight G of intercepting part does in advance
In the formula
nFor
xThe number of times of orientation measurement;
DxBe the each feeding distance of charging stepper motor;
ρBe workpiece density.
As shown in Figure 3, weighing device control principle figure how under the coordination of digital controller, accomplishes synchronous that feeding and workpiece 7 outlines obtain.During beginning, can comprise workpiece 7 density through the information of the relevant weighing device of digital controller is set; Predetermined weight, sweep interval, feeding step distance or the like; Accomplish the zero clearing of carrying out initialization and weight after the information setting, digital controller control feeding stepper motor 9 advances workpiece 7 then, and workpiece 7 advances and stops behind the 1mm; Digital controller gated sweep stepper motor 1 moves up and down; Thereby laser displacement sensor 8 is uniformly-spaced sampled to workpiece 7 profiles, and sampling is accomplished the back and calculated workpiece 7 sectional areas and sectional area is added up, when the weight that adds up reaches the regulation requirement; Digital controller provides signal this part workpiece is cut, and cutting is accomplished back data zero clearing and carried out weight calculating next time.
Claims (2)
1. the preparatory intercepting part of surface profile scan-type workpiece weighing device comprises digital controller, laser displacement sensor; The scanning stepper motor; The feeding stepper motor, support and feeding table is characterized in that: on the support of the both sides of workpiece, laser displacement sensor is housed; Laser displacement sensor is by the scanning step motor drive, and the direction of motion of scanning stepper motor is parallel with the workpiece longitudinal section; Feeding table is used for the feeding workpiece by the feeding step motor drive; Laser displacement sensor, the scanning stepper motor all is connected with the digital controller signal with the feeding stepper motor.
2. the preparatory intercepting part of surface profile scan-type workpiece according to claim 1 weighing device; It is characterized in that: described support comprises the slide rail base, slide rail, slide block and screw mandrel; Slide rail is installed on the slide rail base; Slide block is installed on the slide rail, and screw mandrel is installed in the middle of two slide rails, links to each other with slide block; Described laser displacement sensor is installed on the said slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112175.2A CN102645182B (en) | 2012-04-17 | 2012-04-17 | Surface profile scanning type workpiece precut part weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112175.2A CN102645182B (en) | 2012-04-17 | 2012-04-17 | Surface profile scanning type workpiece precut part weighing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102645182A true CN102645182A (en) | 2012-08-22 |
| CN102645182B CN102645182B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210112175.2A Expired - Fee Related CN102645182B (en) | 2012-04-17 | 2012-04-17 | Surface profile scanning type workpiece precut part weighing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535577A (en) * | 2014-12-05 | 2015-04-22 | 燕山大学 | Workpiece quality loss detection equipment and workpiece quality loss detection method |
| CN108981827A (en) * | 2018-09-18 | 2018-12-11 | 常州利腾机械有限公司 | A kind of two-dimensional laser multi-diameter shaft comprehensive detection device |
| CN110360957A (en) * | 2019-08-22 | 2019-10-22 | 惠州市新一代工业互联网创新研究院 | A kind of H profile steel structure hot procedure angular distortion measurement method |
| CN118189852A (en) * | 2024-03-28 | 2024-06-14 | 广州市森扬电子科技有限公司 | Method, equipment and storage medium for capturing profile of special-shaped bottle based on industrial digital printing |
Citations (6)
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| CN85106473A (en) * | 1985-08-29 | 1987-03-18 | 松下电器产业株式会社 | Bevel for welding sectional area pick-up unit |
| JP2008020316A (en) * | 2006-07-12 | 2008-01-31 | Omron Corp | Displacement sensor |
| CN101387501A (en) * | 2008-10-06 | 2009-03-18 | 天津大学 | Ultra-large workpiece circular section shape and azimuthal measurement apparatus and method |
| CN201221938Y (en) * | 2008-06-10 | 2009-04-15 | 刘岩 | Non-contact intelligent off-line testing instrument of large-scale cylinder workpiece |
| CN102003943A (en) * | 2010-11-08 | 2011-04-06 | 魏青轩 | Method for measuring diameter of non-contact forging on line by using laser |
| CN202522206U (en) * | 2012-04-17 | 2012-11-07 | 杭州电子科技大学 | Surface profile scanning type weighing device for pre-cut part of workpiece |
-
2012
- 2012-04-17 CN CN201210112175.2A patent/CN102645182B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106473A (en) * | 1985-08-29 | 1987-03-18 | 松下电器产业株式会社 | Bevel for welding sectional area pick-up unit |
| JP2008020316A (en) * | 2006-07-12 | 2008-01-31 | Omron Corp | Displacement sensor |
| CN201221938Y (en) * | 2008-06-10 | 2009-04-15 | 刘岩 | Non-contact intelligent off-line testing instrument of large-scale cylinder workpiece |
| CN101387501A (en) * | 2008-10-06 | 2009-03-18 | 天津大学 | Ultra-large workpiece circular section shape and azimuthal measurement apparatus and method |
| CN102003943A (en) * | 2010-11-08 | 2011-04-06 | 魏青轩 | Method for measuring diameter of non-contact forging on line by using laser |
| CN202522206U (en) * | 2012-04-17 | 2012-11-07 | 杭州电子科技大学 | Surface profile scanning type weighing device for pre-cut part of workpiece |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535577A (en) * | 2014-12-05 | 2015-04-22 | 燕山大学 | Workpiece quality loss detection equipment and workpiece quality loss detection method |
| CN104535577B (en) * | 2014-12-05 | 2017-03-08 | 燕山大学 | A kind of workpiece quality loss detection method |
| CN108981827A (en) * | 2018-09-18 | 2018-12-11 | 常州利腾机械有限公司 | A kind of two-dimensional laser multi-diameter shaft comprehensive detection device |
| CN110360957A (en) * | 2019-08-22 | 2019-10-22 | 惠州市新一代工业互联网创新研究院 | A kind of H profile steel structure hot procedure angular distortion measurement method |
| CN110360957B (en) * | 2019-08-22 | 2021-06-08 | 惠州市新一代工业互联网创新研究院 | Angular deformation measuring method for H-shaped steel structure in hot working process |
| CN118189852A (en) * | 2024-03-28 | 2024-06-14 | 广州市森扬电子科技有限公司 | Method, equipment and storage medium for capturing profile of special-shaped bottle based on industrial digital printing |
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| Publication number | Publication date |
|---|---|
| CN102645182B (en) | 2014-08-13 |
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