CN103697975B - A kind of Weight change meausring apparatus and measuring method thereof - Google Patents
A kind of Weight change meausring apparatus and measuring method thereof Download PDFInfo
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- CN103697975B CN103697975B CN201310699034.XA CN201310699034A CN103697975B CN 103697975 B CN103697975 B CN 103697975B CN 201310699034 A CN201310699034 A CN 201310699034A CN 103697975 B CN103697975 B CN 103697975B
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Abstract
The invention provides a kind of Weight change meausring apparatus and measuring method thereof, belong to metering field.This device comprises automated quality measurement mechanism, counterweight station, robotic arm and weight tray; Described weight tray comprises bottom disc (1), side shield (2) and middle baffle plate (3); Described side shield (2) is arranged on the outer most edge of bottom disc (1) circumferentially, and form a face of cylinder, its girth is identical with the girth of bottom disc (1); Described middle baffle plate (3) is positioned on the position of center line of bottom disc (1), bottom disc (1) is separated into two regions, left and right; Described middle baffle plate (3) is provided with groove (4), and middle baffle plate (3) is separated into the baffle plate of two pieces of different lengths by described groove (4).Apparatus of the present invention compact conformation, take up room little, be applicable to thread, the milligram level of sheet, Gamma Magnitude weight mass measurement, the accurate location of automated quality measurement mechanism prong can be ensured, the falling of counterweight can not be caused, scratch.
Description
Technical field
The invention belongs to metering field, be specifically related to a kind of Weight change meausring apparatus and measuring method thereof.
Background technology
In the experiment of pin-point accuracy weight mass measurement, particularly in E1 grade and the experiment of above thread (sheet) milligram (microgram) weight mass measurement, need to use the automated quality measurement mechanism that resolution at least reaches 0.1 μ g and carry out mass measurement.Because thread (sheet) milligram (microgram) counterweight of pin-point accuracy needs the method measured by component combination to carry out mass measurement, 1g counterweight is usually adopted to carry out transmission of quantity value downwards as standard test weight.At present, most of measurement technology mechanism has progressively utilized robotization apparatus for measuring quality to replace manual measurement method, milligram (microgram) the level counterweight of pin-point accuracy is examined and determine and calibrated, or scientific research is carried out to the counterweight of the Gamma Magnitude of pin-point accuracy.
Common robotization apparatus for measuring quality utilizes the mode of prong to store station from counterweight to pick and place counterweight.Usual robotization apparatus for measuring quality counterweight stores station and is made up of stainless steel or aluminium alloy, and excircle is about 1.8cm, and inner periphery is about 1.6cm, prong gap 2mm.This storage station is used for depositing to be measured and standard test weight.During experiment, by the prong of measurement mechanism robotic arm A, counterweight to be measured is taken off from station, be put on Weight change station, then rotary machine axle, counterweight to be measured is transferred on robotic arm B, then get standard test weight with robotic arm A, and measurement station counterweight to be measured and standard test weight alternately being put into apparatus for measuring quality is measured.Therefore, be successfully completed and the combination quality of one group of 12 milligram counterweight is measured, station, Weight change station and weight measurement station pick and place repeatedly to need the robotic arm of robotization apparatus for measuring quality to store at counterweight, especially the counterweight carrying out below 1mg pick and place and multiple measurement time, counterweight picks and places number of times and is multiplied.Domestic counterweight manufacturer is more, great majority do not design counterweight according to the recommendation shape and size of international recommendation OIML, counterweight diameter and width lack of standardization.But, because counterweight diameter, width are too little, be easy to cause counterweight to fall, the phenomenon such as scratch, even if putting position extreme care, and measure because mass measurement needs to carry out repeatedly ABBA circulation, robotic arm is in the measuring process of hundreds of times, and the positioning error of accumulation can cause the skew of counterweight all the time, forms the harmful effect factor in the quality measurement process such as uneven loading error.More serious situation is, if drop into balance measurement region due to counterweight, and robotic arm is is still picking and placeing counterweight when not knowing to fall, all may cause and drive balance measurement station to move together, once touch high precision apparatus for measuring quality, cause the damage of apparatus for measuring quality and counterweight even to scrap, economic loss is very huge.If damaged by standard test weight, the examination of whole measurement technology mechanism will be had influence on.
Summary of the invention
The object of the invention is to solve the difficult problem existed in above-mentioned prior art, a kind of Weight change meausring apparatus and measuring method thereof are provided, its compact conformation, take up room little, be applicable to thread, the milligram level of sheet, Gamma Magnitude weight mass measurement, the accurate location of automated quality measurement mechanism prong can be ensured, the falling of counterweight can not be caused, scratch, apparatus for measuring quality can not be driven to move, also can not cause damage to high precision apparatus for measuring quality and counterweight.
The present invention is achieved by the following technical solutions:
A kind of Weight change meausring apparatus, described device comprises automated quality measurement mechanism, counterweight station, robotic arm and weight tray;
Described weight tray comprises bottom disc 1, side shield 2 and middle baffle plate 3;
Described side shield 2 is arranged on the outer most edge of bottom disc 1 circumferentially, and form a face of cylinder, its girth is identical with the girth of bottom disc 1;
Described middle baffle plate 3 is positioned on the position of center line of bottom disc 1, bottom disc 1 is separated into two regions, left and right;
Described middle baffle plate 3 is provided with groove 4, and middle baffle plate 3 is separated into the baffle plate of two pieces of different lengths by described groove 4.
Described side shield 2 and middle plate washer 3 are all perpendicular to bottom disc 1.
Circumferentially be provided with stopper slot 5 in the lower surface of described bottom disc 1, described stopper slot 5 designs for hypotenuse.
Described robotic arm comprises at least two arm ends, each arm end is provided with prong, described prong is provided with hypotenuse, and this hypotenuse coordinates with the stopper slot 5 of bottom disc 1, and the stopper slot 5 of described bottom disc 1 can be embedded in this hypotenuse.
Described automated quality measurement mechanism is automated quality comparator.
Described counterweight station comprises counterweight and stores station, weight measurement station and Weight change station; Described counterweight stores station and is used for depositing all counterweights to be measured and standard test weight; Described weight measurement station is positioned at the inside of automated quality comparator, for completing comparing and measuring of counterweight; Described Weight change station is positioned at other regions not affecting robotic arm motion, is transferred to another arm end for having assisted counterweight from an arm end of robotic arm.
Described counterweight stores on station, weight measurement station and Weight change station and is equipped with station stopper slot, described station stopper slot designs for hypotenuse, coordinate with the stopper slot 5 of described bottom disc 1, the stopper slot 5 of described bottom disc 1 can be embedded in described station stopper slot.
The diameter of described bottom disc 1 equals the diameter that counterweight stores the disk of station;
Be A-n and B-n by two, the left and right zone number of bottom disc 1; Corresponding zone number is carved with in the bottom of described bottom disc 1.
Described weight tray is made up of weak magnetic metal or nonmagnetic metal.
The measuring method that Weight change weighs, comprises the following steps:
(1). determine weight measurement pattern, if measurement pattern is the mass measurement of a standard test weight and a counterweight to be measured, then forward step (2) to; If measurement pattern is a standard test weight and two counterweight multiple measurement to be measured, then forward step (3) to; If measurement pattern is a standard test weight and three counterweight multiple measurement to be measured, then forward step (4) to;
(2). get two weight trays, be respectively the first pallet and the second pallet; Get standard test weight r and counterweight t to be measured; Standard test weight r symmetry is placed on the groove in the first pallet, counterweight t symmetry to be measured is placed on the groove in the second pallet, utilizes automated quality comparator to record quality difference DELTA m
1; Then, standard test weight r symmetry is placed on the groove in the second pallet, counterweight t symmetry to be measured is placed on the groove in the first pallet, utilizes automated quality comparator to record quality difference DELTA m
2; Quality difference then between standard test weight r and counterweight t to be measured is:
then step (5) is forwarded to;
(3). get two weight trays, be respectively the 3rd pallet and the 4th pallet, get standard test weight r and two counterweight t1 and t2 to be measured with nominal value; Standard test weight r symmetry is placed on the groove in the 3rd pallet, counterweight t1 to be measured is placed on the A-4 region of the 4th pallet, counterweight t2 to be measured is placed on the B-4 region of the 4th pallet, two counterweight symmetries to be measured are placed; Automated quality comparator is utilized to record quality difference DELTA m
3; Then, standard test weight r symmetry is placed on the groove in the 4th pallet, counterweight t1 to be measured is placed on the A-3 region of the 3rd pallet, counterweight t2 to be measured is placed on the B-3 region of the 3rd pallet, two counterweight symmetries to be measured are placed; Automated quality comparator is utilized to record quality difference DELTA m
4; Quality difference then between standard test weight r and counterweight t1 and t2 to be measured is:
then step (5) is forwarded to;
(4). get two weight trays, be respectively the 5th pallet and the 6th pallet, get standard test weight r, two with nominal value counterweight t1 and t2 to be measured, the 3rd counterweight t3 to be measured; Standard test weight r symmetry is placed on the groove in the 5th pallet, counterweight t1 to be measured is placed on the A-6 region of the 6th pallet, counterweight t2 to be measured is placed on the B-6 region of the 6th pallet, counterweight t1 and t2 symmetry to be measured is placed; Counterweight t3 symmetry to be measured is placed on the groove in the 6th pallet, utilizes automated quality comparator to record quality difference DELTA m
5; Then, standard test weight r symmetry is placed on the groove in the 6th pallet, counterweight t1 to be measured is placed on the A-5 region of the 5th pallet, counterweight t2 to be measured is placed on the B-5 region of the 5th pallet, counterweight t1 and t2 symmetry to be measured is placed; Counterweight t3 symmetry to be measured is placed on the groove in the 5th pallet, utilizes automated quality comparator to record quality difference DELTA m
6; Then standard test weight r and counterweight t1 to be measured, the quality difference between t2 and t3 is
(5) terminate to measure.
Compared with prior art, the invention has the beneficial effects as follows: apparatus of the present invention compact conformation, take up room little, be applicable to thread, the milligram level of sheet, Gamma Magnitude weight mass measurement, can ensure that the accurate location of automated quality measurement mechanism prong is (if counterweight has scratch, will cause and measure the bending of station prong and mechanical arm prong, time next time, mechanical arm picked and placeed counterweight again to measurement station, if the prong of mechanical arm has bending, be necessarily enter do not go measure station prong inside, this seam is very thin.Naked eyes are also difficult to distinguish, so can ensure accurately location.), the falling of counterweight can not be caused, scratch, apparatus for measuring quality can not be driven to move, and (side shield of disk can ensure that thread counterweight can not reach the place measured beyond station, would not be stuck in prong, once be stuck in the inside scratch will be caused, and drive the displacement of apparatus for measuring quality.), also can not cause damage to high precision apparatus for measuring quality and counterweight.
Accompanying drawing explanation
Fig. 1 is the weight tray structural representation of Weight change meausring apparatus of the present invention;
Fig. 2 is the weight tray side shield schematic diagram of Weight change meausring apparatus of the present invention;
Fig. 3 is baffle plate and groove location schematic diagram in the weight tray of Weight change meausring apparatus of the present invention;
Fig. 4 is that counterweight stores station and stopper slot side view;
Fig. 5 is that counterweight stores station, prong and stopper slot vertical view;
Fig. 6 is that in the inventive method, schematic diagram placed by single counterweight;
Fig. 7 is that in the inventive method, schematic diagram placed by two counterweight;
Fig. 8 is that in the inventive method, schematic diagram placed by three counterweights.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
The present invention can ensure the accurate location of automated quality measurement mechanism prong, effectively eliminate the impact of unbalance loading on measurement result, the obscuring of counterweight can not be caused, fall, scratch, apparatus for measuring quality can not be driven to move, also can not cause damage to high precision apparatus for measuring quality and counterweight.
Weight change meausring apparatus of the present invention, comprises automated quality measurement mechanism, (position of as shown in Figure 4 and Figure 5, depositing counterweight is called station to counterweight station.), robotic arm and weight tray, described device comprises the weight tray for loading thread (sheet) milligram (microgram) counterweight.Weight tray comprises disk 1, side shield 2, middle baffle plate 3, groove 4 and the bottom stopper slot 5 (as shown in Figure 2) of bottom.The weight tray separated by middle plate washer 3 is divided into two regions, left and right, is carved with corresponding numbering in disk bottom.Quality self-operated measuring unit, counterweight station, robotic arm are independently several parts; Weight tray is placed on counterweight station, and because milligram \ Gamma Magnitude counterweight is very little, counterweight station is prong shape, and there is finedraw centre, so can not directly be put on counterweight station, therefore the present invention proposes a large face plate, is indirectly used for accepting counterweight.And arm for carrying counterweight back and forth on counterweight station and quality self-operated measuring unit.Counterweight station has individual position-limit mechanism, and tray bottom is also devise such shape, just in time can coincide with counterweight station, realize steadily docking.Counterweight is when utilizing robotic arm to store station to Weight change station or weight measurement station transfer counterweight from counterweight; weight tray in described device is as collet; can realize the protection of counterweight and can not counterweight be obscured, during measurement, can not uneven loading error be brought.
Described automated quality measurement mechanism can control balance door opening, cut out automatically, and the scale pan is equipped with prong and can completes and unloads counterweight from robotic arm.This apparatus for measuring quality is fixed on stable experiment platform.During concrete enforcement, automated quality comparator can adopt Sai Duolisi scientific instrument (Beijing) company limited, and concrete model is the automated quality comparator of ccr10.
Described counterweight station comprises counterweight and stores station, weight measurement station and Weight change station.Counterweight stores station and is used for depositing all counterweights to be measured and standard test weight; Weight measurement station is positioned at apparatus for measuring quality inside, for completing comparing and measuring of counterweight; Weight change station is positioned at other regions not affecting robotic arm motion, is transferred to another arm for having assisted counterweight from robotic arm.Common measurement station is exactly fine and closely woven prong, if Fig. 5 is that (counterweight stores on these three stations of station, weight measurement station and Weight change station and is all provided with corresponding station stopper slot 6 a whole plane.)。Propose counterweight station serration in the present invention when cutting, all the design of employing hypotenuse, corresponding disk is also hypotenuse design, and so lucky energy coincide and locates.
Described robotic arm comprises at least two arm ends, and arm installs prong, for picking and placeing counterweight on corresponding station.Robotic arm can rotate, another robotic arm to be transferred to by counterweight prong from the prong of a robotic arm can be realized by Weight change station, described prong is also fine and closely woven seam, on prong, the spacing hypotenuse of pallet is provided with in the present invention, even if pallet has slight displacement, the design of this hypotenuse also can make it fall back to inside groove.As shown in 6 of Fig. 4.
Described weight tray is made up of weak magnetic (nonmagnetic) metal that (namely bottom disc 1, side shield 2 and middle baffle plate 3 all adopt same material to make.), as aluminum alloy materials and titanium alloy, but in mass metrology field, aluminium alloy is comparatively commonly used, mainly in order to eliminate the impact of weight tray on counterweight generation magnetic as much as possible.Weight tray comprises the smooth disk 1 in bottom, and side has the side shield 2 perpendicular to bottom disc 1, in the middle of weight tray with in baffle plate 3 separate, there is a groove 4 at position top in the middle part of middle plate washer, counterweight bottom disc limited location groove 5.The weight tray separated by middle plate washer 3 is divided into two regions, left and right, carves corresponding numbering A-n and B-n for representing region A and the region B of pallet n in disk bottom.
Smooth bottom disk 1, mainly ensure to place on counterweight station to stablize, the stability in whole measuring process can be ensured, improve measuring repeatability.When side shield 2 is mainly in order to prevent from measuring milligram (microgram) level counterweight, because robotic arm motion is too fast, the place that milligram (microgram) level counterweight blows off outside collet by air-flow.Side shield must be sealing, and being afraid of has thread counterweight to stretch from seam, once scraping, balance will be caused to quit work, counterweight damages.When middle baffle plate 3 is to carry out a standard test weight to two weight measurements to be measured, counterweight to be measured can be distinguished (if an independent counterweight is placed on when pallet weighs, groove is also effective, and can symmetrically place time it makes to place counterweight, counterweight is placed on groove.)。Groove 4, under particular measurement mode, places the counterweight of given shape, ensures that whole pallet and counterweight do not form unbalance loading to weight measurement station.As shown in Figure 6, this pentagonal counterweight is long, if groove is arranged on the position in the center of circle, middle, this pentagonal counterweight will be put less than in disk, and causes counterweight bottom to stick up, and even sticks up the outside of disk.Therefore groove is arranged on the slightly top position of departing from the center of circle, and lying low that guarantee counterweight can be complete is like this placed on inside disk.During concrete enforcement, there is restriction to the length of groove, if the diameter of such as whole disk is 1.6cm.This groove, the long 0.4cm of baffle plate that middle baffle plate 3 is short-and-medium, the long long 1cm of baffle plate, recess width is 0.2cm, disregards the size of wall thickness, and rule of thumb, wall thickness is about 0.05cm.Recess width is 0.2cm.But can not counterweight be blocked, the damage of counterweight can be caused like this, as long as counterweight can put in.
Stopper slot 5 designs to coordinate self-operated measuring unit counterweight to store the stopper slot 6 of station, store on station even if weight tray is not accurately placed on counterweight, and the stopper slot 5 of hypotenuse design stores coordinating of the stopper slot 6 of station with counterweight, weight tray can be limited to and weigh in region, reduce the measuring error that counterweight unbalance loading is brought as far as possible.As shown in Figure 4, this place designs for hypotenuse stopper slot 6, and so spacing design ensures that weight tray can be stuck in inside groove just, can not slide out.
Store station prong 7 do not collide to realize the robotic arm prong described in goal of the invention and counterweight, with weight measurement station prong, do not collide with Weight change station prong, high precision apparatus for measuring quality can not be damaged, also damage can not be caused to counterweight, first must ensure that counterweight does not drop into the place outside counterweight storage station, described weight tray diameter must equal the diameter that counterweight stores station disc 8, and can be embedded in (as shown in Figure 4 and Figure 5) in the stopper slot 6 of this storage station.Can ensure when actual weight measurement like this, even if robotic arm is positioned with skew, pallet also can be limited in groove and be unlikely to larger movement occurs by this stopper slot.
When weight measurement, usual employing times component measurement method, namely a standard test weight can carry out multiple measurement with the counterweight to be measured of two same nominal values simultaneously, the counterweight to be measured of these two same nominal values must distinguish, with ensure to measure terminate after return to respective Weight box and return client.Milligram (microgram) counterweight is very little, is not marked, be difficult to distinguish after measurement completes if start before measuring.The Weight change meausring apparatus that the present invention proposes, devises middle plate washer 3 and pallet is divided into two regions, and engrave mark, ensures that counterweight can not be obscured by measurement.
The invention allows for a kind of pin-point accuracy and send out Weight change weighing technique, the Weight change meausring apparatus in the method and the present invention with the use of, the final mass value of counterweight can be obtained.The inventive method in turn includes the following steps:
A. weight measurement pattern is determined, as " mass measurement of a standard test weight and a counterweight to be measured ", " standard test weight and two counterweight multiple measurement to be measured " or " standard test weight and three counterweight multiple measurement to be measured "; In mass measurement, when a standard test weight and three counterweights to be measured carry out measurement of comparison, wherein two in counterweight to be measured, must with nominal value.
If b. measurement pattern is " mass measurement of a standard test weight and a counterweight to be measured ", then forward e to;
If c. measurement pattern is " standard test weight and two counterweight multiple measurement to be measured ", then forward f to;
If d. measurement pattern is " standard test weight and three counterweight multiple measurement to be measured ", then forward g to;
E. get two weight trays 1 and 2, if standard test weight code name is r, counterweight code name to be measured is t.R is placed on blind recess place in pallet 1 (symmetrical placement, can not cause the bias of weight tray like this, thus bring misalignment measurement error), t is placed on blind recess place in pallet 2, the quality difference recorded is Δ m
1(weight tray can take off by the mechanical arm of mass comparator, is put into and measures on station, automatically read balance indicating value, and is put back into by weight tray on storage station.); Next, r is placed on blind recess place in pallet 2, t is placed on blind recess place in pallet 1, the quality difference recorded is Δ m
2; Quality difference then between standard test weight r and counterweight t to be measured is:
(the pentagon counterweight in Fig. 6 is the one of thread counterweight to counterweight modes of emplacement such as Fig. 6, also has the triangle counterweight in Fig. 7.The counterweight of different nominal value has corresponding shape.)；
F. get two weight trays 3 and 4, if standard test weight code name is r, two is t1 and t2 with nominal value counterweight code name to be measured respectively.R is placed on the A-4 region that pallet 3, t1 puts pallet 4, and t2 is placed on the B-4 region of pallet 4, and the quality difference recorded is Δ m
3; Next, r is placed on the A-3 region that pallet 4, t1 is placed on pallet 3, t2 is placed on the B-3 region of pallet 3, and the quality difference of survey is Δ m
4; Quality difference then between standard test weight r and counterweight t1 and t2 to be measured is:
counterweight modes of emplacement is as Fig. 6 and Fig. 7;
G. get two weight trays 5 and 6, if standard test weight code name is r, two is t1 and t2 with nominal value counterweight code name to be measured respectively, and the 3rd counterweight code name to be measured is t3.R is placed on the A-6 region that pallet 5, t1 is placed on pallet 6, and t2 is placed on the B-6 region of pallet 6, and t3 is placed on blind recess place in pallet 6, and places at A-6 and B-6 positional symmetry, and the quality difference recorded is Δ m
5; Next, r is placed on the A-5 region that pallet 6, t1 is placed on pallet 5, t2 is placed on the B-5 region of pallet 5, and t3 is placed on blind recess place in pallet 5, and places at A-5 and B-5 positional symmetry, and the quality difference recorded is Δ m
6; Then standard test weight r and counterweight t1 to be measured, the quality difference between t2 and t3 is
counterweight modes of emplacement is as Fig. 6 and Fig. 8.
As shown in Figure 1-Figure 3, in concrete enforcement, adopt aluminum alloy materials (ρ=2.7g/cm
3) making weight tray, tray bottom disk diameter 1.6cm, thickness 0.05cm, then disk volume in tray bottom is 0.10048cm
3, mass value m
1for 0.271296g.
Weight tray side shield height 0.2cm, its girth equals the girth of tray bottom disk cylindrical, i.e. 5.024cm, and thickness is still 0.05cm, then volume is 0.05024cm
3, mass value m
2for 0.135648g.
The long 1.4cm of baffle plate, thickness 0.05cm, high 0.2cm in counterweight, then volume is 0.014cm
3, mass value m
3for 0.0378g.
Then this weight tray gross mass m is m
1+ m
2+ m
3=0.271296g+0.135648g+0.0378g=0.444744g.
This weight tray theoretical value is 444.744mg.In actual fabrication process, two weight trays can not have the same mass value.If different two pallets 1 and pallet 2, in order to eliminate the mass discrepancy between pallet, propose the measuring method that Weight change weighs.Do standard with 100mg, two thread counterweights of 50mg illustrate as counterweight to be measured:
The first step, determines that weight measurement pattern is for " a 100mg standard test weight and two 50mg counterweight multiple measurement to be measured ";
Second step, is placed on pallet 1 by 100mg in the mode of Fig. 6; Be placed on pallet 2 by 50mg in the mode of Fig. 7, a 50mg is in A-2 region, and another is in B-2 region.
3rd step, weight mass measurement device carries out mass measurement to two pallets, the quality difference DELTA m recorded
1=m
t-m
r=0.00598mg.
4th step, exchanges the scale pan.100mg counterweight is placed on pallet 2 in the mode of Fig. 6; Be placed on pallet 1 by 50mg in the mode of Fig. 7, a 50mg is in A-1 region, and another is in B-1 region.Repeat the mass measurement work of the 3rd step, the quality difference DELTA m recorded
2=m
t-m
r=0.00037mg.
5th step, eliminates the mass discrepancy of pallet, obtains counterweight to be measured and standard test weight final mass difference
The present invention utilizes pin-point accuracy weight mass measurement device to carry out mass measurement, can be used for E
1the automated quality measurement mechanism that grade and above thread (sheet) milligram (microgram) weight mass measurement are used in testing, described counterweight to be measured can be E
1grade and above milligram level and Gamma Magnitude counterweight, the inventive method is equally also applicable to E
1milligram level below grade, other counterweight of Gamma Magnitude.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and the method be not limited only to described by the above-mentioned embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (10)
1. a Weight change meausring apparatus, is characterized in that: described device comprises automated quality measurement mechanism, counterweight station, robotic arm and weight tray;
Described weight tray comprises bottom disc (1), side shield (2) and middle baffle plate (3);
Described side shield (2) is arranged on the outer most edge of bottom disc (1) circumferentially, and form a face of cylinder, its girth is identical with the girth of bottom disc (1);
Described middle baffle plate (3) is positioned on the position of center line of bottom disc (1), bottom disc (1) is separated into two regions, left and right;
Described middle baffle plate (3) is provided with groove (4), and middle baffle plate (3) is separated into the baffle plate of two pieces of different lengths by described groove (4).
2. Weight change meausring apparatus according to claim 1, is characterized in that: described side shield (2) and middle plate washer (3) are all perpendicular to bottom disc (1).
3. Weight change meausring apparatus according to claim 2, is characterized in that: be circumferentially provided with stopper slot (5) in the lower surface of described bottom disc (1), and described stopper slot (5) designs for hypotenuse.
4. Weight change meausring apparatus according to claim 3, it is characterized in that: described robotic arm comprises at least two arm ends, each arm end is provided with prong, described prong is provided with hypotenuse, this hypotenuse coordinates with the stopper slot (5) of bottom disc (1), and the stopper slot (5) of described bottom disc (1) can be embedded in this hypotenuse.
5. Weight change meausring apparatus according to claim 4, is characterized in that: described automated quality measurement mechanism is automated quality comparator.
6. Weight change meausring apparatus according to claim 5, is characterized in that: described counterweight station comprises counterweight and stores station, weight measurement station and Weight change station; Described counterweight stores station and is used for depositing all counterweights to be measured and standard test weight; Described weight measurement station is positioned at the inside of automated quality comparator, for completing comparing and measuring of counterweight; Described Weight change station is positioned at other regions not affecting robotic arm motion, is transferred to another arm end for having assisted counterweight from an arm end of robotic arm.
7. Weight change meausring apparatus according to claim 6, it is characterized in that: described counterweight stores on station, weight measurement station and Weight change station and is equipped with station stopper slot, described station stopper slot designs for hypotenuse, coordinate with the stopper slot (5) of described bottom disc (1), the stopper slot (5) of described bottom disc (1) can be embedded in described station stopper slot.
8. Weight change meausring apparatus according to claim 7, is characterized in that: the diameter of described bottom disc (1) equals the diameter that counterweight stores the disk of station;
Be A-n and B-n by two, the left and right zone number of bottom disc (1); Corresponding zone number is carved with in the bottom of described bottom disc (1).
9. Weight change meausring apparatus according to claim 8, is characterized in that: described weight tray is made up of weak magnetic metal or nonmagnetic metal.
10. use a measuring method for the Weight change meausring apparatus described in claim 8, it is characterized in that: said method comprising the steps of:
(1). determine weight measurement pattern, if measurement pattern is the mass measurement of a standard test weight and a counterweight to be measured, then forward step (2) to; If measurement pattern is a standard test weight and two counterweight multiple measurement to be measured, then forward step (3) to; If measurement pattern is a standard test weight and three counterweight multiple measurement to be measured, then forward step (4) to;
(2). get two weight trays, be respectively the first pallet and the second pallet; Get standard test weight r and counterweight t to be measured; Standard test weight r symmetry is placed on the groove in the first pallet, counterweight t symmetry to be measured is placed on the groove in the second pallet, utilizes automated quality comparator to record quality difference DELTA m
1; Then, standard test weight r symmetry is placed on the groove in the second pallet, counterweight t symmetry to be measured is placed on the groove in the first pallet, utilizes automated quality comparator to record quality difference DELTA m
2; Quality difference then between standard test weight r and counterweight t to be measured is:
then step (5) is forwarded to;
(3). get two weight trays, be respectively the 3rd pallet and the 4th pallet, get standard test weight r and two counterweight t1 and t2 to be measured with nominal value; Standard test weight r symmetry is placed on the groove in the 3rd pallet, counterweight t1 to be measured is placed on the A-4 region of the 4th pallet, counterweight t2 to be measured is placed on the B-4 region of the 4th pallet, two counterweight symmetries to be measured are placed; Automated quality comparator is utilized to record quality difference DELTA m
3; Then, standard test weight r symmetry is placed on the groove in the 4th pallet, counterweight t1 to be measured is placed on the A-3 region of the 3rd pallet, counterweight t2 to be measured is placed on the B-3 region of the 3rd pallet, two counterweight symmetries to be measured are placed; Automated quality comparator is utilized to record quality difference DELTA m
4; Quality difference then between standard test weight r and counterweight t1 and t2 to be measured is:
then step (5) is forwarded to;
(4). get two weight trays, be respectively the 5th pallet and the 6th pallet, get standard test weight r, two with nominal value counterweight t1 and t2 to be measured, the 3rd counterweight t3 to be measured; Standard test weight r symmetry is placed on the groove in the 5th pallet, counterweight t1 to be measured is placed on the A-6 region of the 6th pallet, counterweight t2 to be measured is placed on the B-6 region of the 6th pallet, counterweight t1 and t2 symmetry to be measured is placed; Counterweight t3 symmetry to be measured is placed on the groove in the 6th pallet, utilizes automated quality comparator to record quality difference DELTA m
5; Then, standard test weight r symmetry is placed on the groove in the 6th pallet, counterweight t1 to be measured is placed on the A-5 region of the 5th pallet, counterweight t2 to be measured is placed on the B-5 region of the 5th pallet, counterweight t1 and t2 symmetry to be measured is placed; Counterweight t3 symmetry to be measured is placed on the groove in the 5th pallet, utilizes automated quality comparator to record quality difference DELTA m
6; Then standard test weight r and counterweight t1 to be measured, the quality difference between t2 and t3 is
(5) terminate to measure.
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| CN107607188A (en) * | 2016-09-05 | 2018-01-19 | 中国计量科学研究院 | Counterweight automatic clamping and placing system |
| CN109506758B (en) * | 2018-11-26 | 2024-02-09 | 青岛容广电子技术有限公司 | Standard weight taking and placing device for constant temperature and humidity automatic weighing system |
Citations (5)
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|---|---|---|---|---|
| GB191405919A (en) * | 1913-05-17 | 1914-06-04 | Wladimir Popow | Improvements in Weighing Machines for Weighing and Checking. |
| CN201203462Y (en) * | 2008-05-28 | 2009-03-04 | 奥豪斯仪器（上海）有限公司 | Balance |
| CN101806612A (en) * | 2010-02-05 | 2010-08-18 | 中国计量科学研究院 | Automatic handing system of weight and application thereof |
| CN101988849A (en) * | 2009-08-03 | 2011-03-23 | 北京航天计量测试技术研究所 | Weight exchanging rotary table with speed change function |
| CN102778289A (en) * | 2012-08-03 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Convenient-reading tray balance |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191405919A (en) * | 1913-05-17 | 1914-06-04 | Wladimir Popow | Improvements in Weighing Machines for Weighing and Checking. |
| CN201203462Y (en) * | 2008-05-28 | 2009-03-04 | 奥豪斯仪器（上海）有限公司 | Balance |
| CN101988849A (en) * | 2009-08-03 | 2011-03-23 | 北京航天计量测试技术研究所 | Weight exchanging rotary table with speed change function |
| CN101806612A (en) * | 2010-02-05 | 2010-08-18 | 中国计量科学研究院 | Automatic handing system of weight and application thereof |
| CN102778289A (en) * | 2012-08-03 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Convenient-reading tray balance |
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