CN103090956A - Automatic pressure preloading equipment and method of weighing force measuring sensor - Google Patents
Automatic pressure preloading equipment and method of weighing force measuring sensor Download PDFInfo
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- CN103090956A CN103090956A CN2013100306385A CN201310030638A CN103090956A CN 103090956 A CN103090956 A CN 103090956A CN 2013100306385 A CN2013100306385 A CN 2013100306385A CN 201310030638 A CN201310030638 A CN 201310030638A CN 103090956 A CN103090956 A CN 103090956A
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Abstract
The invention discloses automatic pressure preloading equipment and a method of a weighing force measuring sensor. The automatic pressure preloading equipment of the weighing force measuring sensor comprises a pressure preloading device and a pressure preloading control system, wherein the pressure preloading device comprises a machine frame, a motion mechanism of a weighing force measuring sensor to be measured and a motion mechanism of a standard weighing force measuring sensor, and the pressure preloading control system comprises an industrial control computer, a data collection card, a bar code scanner, a standard pressure measuring meter, a measuring meter of pressure to be measured, a motor control switch and a motor driver. The method comprises steps of (1) parameter initializing; (2) clamping and arranging of the weighing force measuring sensor to be measured; (3) pressure loading of the weighing force measuring sensor to be measured; (4) pressure unloading of the weighing force measuring sensor to be measured; (5) repeating from step two to step four until reaching the required pressure preloading times; (6) unloading of the weighing force measuring sensor to be measured. The automatic pressure preloading equipment and the method of the weighing force measuring sensor can improve measuring quality, improve production efficiency, reduce labor intensity, achieve low cost, and are high in working reliability, strong in practical applicability and high in popularization application value.
Description
Technical field
The invention belongs to the Intelligent Measurement technical field, especially relate to a kind of weighing and force-measuring transducer automatic pressure preload Apparatus and method for.
Background technology
Weighing and force-measuring transducer is a kind of sensor the most commonly used in industrial practice, it is widely used in various industrial automatic control environment, relates to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline.
Weighing and force-measuring transducer needs to carry out repeatedly different detections in process of production, wherein the static properties test is a crucial detection, this link needs the performance index of testing sensor to have: output at zero point, Full-span output, nonlinearity, sluggish, repeatability, degree of accuracy, sensitivity, zero point drift, 9 of overload etc.The static properties test need to be placed in tested sensor under the identical mechanical condition of true application, and this process of the test is referred to as " sensor preload process ", provides the mechanism of test condition to be referred to as preload equipment.
Due to the singularity of electrical measurement product industry, and comparatively harsh to test condition, and testing apparatus needs special research and development.At present, it is the transregional company of representative that Vishay measures group, HBM company, independent research relevant ATE (automatic test equipment), production automation degree is higher, product quality, technology are in advanced in the world always.But the not patent protection of application response at home.More domestic mid and low-end products manufacturer utilizes motorisation unit, and control procedure is completed by manually-operated, depend on the competitive power that cheap labor cost exchanges market for, the static properties test fails to realize robotization, so the product test quality is unstable, and testing efficiency is low
The technical problem underlying that exists at present:
(1) product clamps problem: existing preload equipment depends on manual operations to product clamping, uninstall process, the pressure that bears due to tested sensor is larger, and require accurate positioning, reliable and stable, utilize at present 8 screws that product to be measured is fixed, the location is by manual setting, and precision is controlled according to workman's experience.Therefore, manual clamping test product holding time is longer, and testing efficiency is low, and labour intensity is large.
(2) pressure-loaded problem: the pressure reloaded of small-range sensor, utilize lifting jack hand-manipulated to realize, loading velocity is slow, and labour intensity is large.The pressure reloaded of sensors of large measurement range realizes by hydraulic system, and the workman manually controls hydraulic valve, and the control of a certain definite pressure is needed veteran workman's operation, and artificial carelessness can cause overvoltage to load, and causes the damage of product probability to raise.In addition, leakage of oil easily appears in hydraulically operated equipment (HOE), pollutes worktable.
(3) the output data of tested sensor and standard transducer, by the visual inspection pressure-measuring device, then with paper and pen, it is carried out record, and only recorded need the test " repeatability " and " zero point drift " required data, the test of 7 indexs of residue is left in the basket, this is unfavorable for the monitoring to product quality, is unfavorable for that also the follow-up test link reviews grasp and the data of this product detailed performance.
(4) the above-mentioned characteristics that exist make the labor strength of bulk article test larger, and according to investigations, the product number that each workman on average per hour completes the static properties test is 6, and for the amount of finishing the work, the workman must work more than 10 hours every day.In addition, introduce according to manufacturer, owing to lacking effectively supervision, exist the workman to fabricate test data and omit the test step phenomenon and occur, thereby cause some performance deficiency of product not to be found, cause the waste of follow-up unnecessary continuation processing and cost.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of compact conformation, novel in design rationally, use simple operation, can improve the weighing and force-measuring transducer product test mass, enhance productivity, reduce labour intensity, realize the weighing and force-measuring transducer automatic pressure preload equipment that cost is low.
for solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg, be arranged on the lower shoe at supporting leg top, be disposed on the first guide pillar and the second guide pillar on lower shoe, and the entablature that is arranged on the first guide pillar and the second guide pillar top, described the first guide pillar and the second guide pillar are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises the first screw-threaded shaft elevator that is arranged on lower shoe and the first motor that is connected and is used for driving the first screw-threaded shaft elevator action with the first screw-threaded shaft elevator, be connected with the first leading screw on described the first screw-threaded shaft elevator, the top of described the first leading screw is provided with the movable table that can be under the drive of the first leading screw moves up and down along the first guide pillar and the second guide pillar, the both sides of described movable table are respectively arranged with the first guide pin bushing that matches with the first guide pillar and the second guide pin bushing that matches with the second guide pillar, the top of described movable table is provided with clamp of sensor, the top of described clamp of sensor has be used to the installation of sensors groove that weighing and force-measuring transducer to be measured is installed, described standard weighing and force-measuring transducer motion comprises the second screw-threaded shaft elevator that is arranged on entablature and the second motor that is connected and is used for driving the second screw-threaded shaft elevator action with the second screw-threaded shaft elevator, be connected with the second leading screw on described the second screw-threaded shaft elevator, be connected with the fixed leg that stretches out on described entablature downwards, the bottom of described fixed leg is fixedly connected with that being useful on matches with described clamp of sensor and is fixedly clamped the fixed head of described weighing and force-measuring transducer to be measured, the bottom of described the second leading screw is provided with sensor connector, the bottom of described sensor connector is connected with the standard weighing and force-measuring transducer, the pre-borne control system of described pressure comprises industrial control computer and the data collecting card that joins with described industrial control computer, bar code scanner, normal pressure measuring instrument and testing pressure measuring instrument, all be pasted with the bar code that storage inside has the test parameter of weighing and force-measuring transducer to be measured on each described weighing and force-measuring transducer to be measured, the signal input part of the signal output part of described standard weighing and force-measuring transducer and described normal pressure measuring instrument joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured and described testing pressure dynamometer joins, be connected on described multifunctional data acquisition card for the first guide pin bushing being moved downward the first limit switch that extreme position detects, be used for the second guide pin bushing is moved downward the second limit switch that extreme position detects, the motor driver that is used for the motor control switch that the action of the first motor is controlled and is used for the second motor is driven, described the first limit switch is arranged on the bottom of described the first guide pin bushing, described the second limit switch is arranged on the bottom of described the second guide pin bushing, described motor control switch is connected in the current supply circuit of the first motor, be provided with the current detection circuit module that detects for the electric current to described the first motor on described the first motor, described current detection circuit module and described motor control switch join, described the second motor and described motor driver join.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described lower shoe is fixedly connected on described supporting leg top by screw, the upper and lower of the upper and lower of described the first guide pillar and described the second guide pillar is provided with external thread, is provided be used to the first threaded hole of described the first guide pillar that is threaded on described entablature and lower shoe and the second threaded hole of described the second guide pillar that is used for being threaded.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described the first screw-threaded shaft elevator is fixedly connected on described lower shoe by the first screw-threaded shaft elevator base, the output shaft of described the first motor is connected with the input shaft of described the first screw-threaded shaft elevator by the first shaft coupling, and the side of described supporting leg is fixedly connected with and is useful on the first motor cabinet that described the first motor is installed; The top of described the first leading screw is fixedly connected with the bottom of described movable table by the leading screw joint flange, and the place, centre position, bottom of described movable table is provided with a plurality of the 3rd threaded holes for be fixedly connected with described leading screw joint flange by screw; Two side roof parts of described movable table are respectively arranged with a plurality of the 4th threaded holes for be fixedly connected with described the first guide pin bushing by screw and a plurality of the 5th threaded holes for be fixedly connected with described the second guide pin bushing by screw; The crown center position of described movable table is provided with a plurality of the 6th threaded holes for be fixedly connected with described clamp of sensor by screw, and the bottom of described clamp of sensor is provided with the 9th threaded hole that matches with the 6th threaded hole.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described the second screw-threaded shaft elevator is fixedly connected on described entablature by the second screw-threaded shaft elevator base, the output shaft of described the second motor is connected with the input shaft of described the second screw-threaded shaft elevator by the second shaft coupling, and described entablature top is fixedly connected with the second motor cabinet that is useful on described the second motor of installation.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: the upper and lower of described fixed leg is provided with external thread, be provided with the 7th threaded hole be used to the described fixed leg that is threaded on described entablature, be provided with the 8th threaded hole be used to the described fixed leg that is threaded on described fixed head; Described sensor connector is fixedly connected with by the bottom of screw with described the second leading screw, and described standard weighing and force-measuring transducer is fixedly connected with the bottom of described sensor connector by screw.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described the first motor is alternating current generator.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described the second screw-threaded shaft elevator is ball screw type elevator.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: described the second motor is servomotor, described motor driver is motor servo driver.
Above-mentioned weighing and force-measuring transducer automatic pressure preload equipment is characterized in that: described pressure preload set-up of control system is in pressure preload switch board, and described pressure preload switch board is arranged on described supporting leg side, and described motor control switch is relay.
The present invention also provides the weighing and force-measuring transducer automatic pressure that a kind of automaticity is high, data processing speed is fast, precision is high, functional reliability is high pre-support method, it is characterized in that the method comprises the following steps:
Step 1, parameter initialization: adopt described bar code scanner to read the pressure test parameter of the weighing and force-measuring transducer to be measured that is stored in bar code, and the pressure test parameter that reads is uploaded to industrial control computer in real time, and by the operation industrial control computer, the pressure test parameter is carried out the initialization setting;
Step 5, repeating step two are to step 4, until pressure preload number of times has reached weighing and force-measuring transducer required pressure preload number of times to be measured;
The present invention compared with prior art has the following advantages:
1, the compact conformation of weighing and force-measuring transducer automatic pressure preload equipment of the present invention, rationally novel in design, convenient processing and manufacture.
2, the use simple operation of weighing and force-measuring transducer automatic pressure preload equipment of the present invention, weighing and force-measuring transducer to be measured is quick-clamping, unloading automatically.
3, weighing and force-measuring transducer automatic pressure preload equipment of the present invention adopts Mechanical Driven, Automatic Control, compare with existing fluid pressure type prestrain machine, have be quick on the draw, testing efficiency is high, pollution is little and the peripheral annex of attaching troops to a unit is few, realize the plurality of advantages such as cost is low.
4, the present invention can realize accurate location and the accurate loading of pressure to weighing and force-measuring transducer to be measured, has improved static properties measuring accuracy and the reliability of weighing and force-measuring transducer to be measured.
5, the present invention adopts industrial control computer to carry out data collection and administration, realized that automatic test, calculating and the data thereof of weighing and force-measuring transducer static properties test index to be measured manage automatically, avoided the impact of human factor on product quality, and data processing speed is fast, and memory data output is large.
6, the present invention can improve the test mass of weighing and force-measuring transducer product, enhances productivity, and reduces labour intensity.
7, the present invention has filled up the blank of prior art, can provide quick testing apparatus for domestic electrical measurement product industry, helps to enhance productivity, and improves the quality of product, the competitive power of enterprise.
8, of the present invention practical, result of use is good, and application value is high.
In sum, the present invention is rationally novel in design, can improve the test mass of weighing and force-measuring transducer product, enhances productivity, and reduces labour intensity, realizes that cost is low, and functional reliability is high, and is practical, and application value is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the front view of weighing and force-measuring transducer automatic pressure preload equipment of the present invention.
Fig. 2 is the left view of weighing and force-measuring transducer automatic pressure preload equipment of the present invention.
Fig. 3 is that the master of movable table of the present invention looks cut-open view.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is that the master of clamp of sensor of the present invention looks cut-open view.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the annexation schematic diagram of the pre-borne control system of pressure of the present invention and other each parts.
Fig. 8 is the method flow diagram of the pre-support method of weighing and force-measuring transducer automatic pressure of the present invention.
Description of reference numerals:
Embodiment
as Fig. 1, Fig. 2, Fig. 5, Fig. 6 and shown in Figure 7, weighing and force-measuring transducer automatic pressure preload equipment of the present invention, comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg 1, be arranged on the lower shoe 2 at supporting leg 1 top, be disposed on the first guide pillar 3-1 and the second guide pillar 3-2 on lower shoe 2, and the entablature 9 that is arranged on the first guide pillar 3-1 and the second guide pillar 3-2 top, described the first guide pillar 3-1 and the second guide pillar 3-2 are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises the first screw-threaded shaft elevator 4 that is arranged on lower shoe 2 and the first motor 19 that is connected and is used for driving the first screw-threaded shaft elevator 4 actions with the first screw-threaded shaft elevator 4, be connected with the first leading screw 10 on described the first screw-threaded shaft elevator 4, the top of described the first leading screw 10 is provided with the movable table 6 that can be under the drive of the first leading screw 10 moves up and down along the first guide pillar 3-1 and the second guide pillar 3-2, the both sides of described movable table 6 are respectively arranged with the first guide pin bushing 5-1 that matches with the first guide pillar 3-1 and the second guide pin bushing 5-2 that matches with the second guide pillar 3-2, the top of described movable table 6 is provided with clamp of sensor 18, the top of described clamp of sensor 18 has be used to the installation of sensors groove 21 that weighing and force-measuring transducer 17 to be measured is installed, described standard weighing and force-measuring transducer motion comprises the second screw-threaded shaft elevator 14 that is arranged on entablature 9 and the second motor 11 that is connected and is used for driving the second screw-threaded shaft elevator 14 actions with the second screw-threaded shaft elevator 14, be connected with the second leading screw 22 on described the second screw-threaded shaft elevator 14, be connected with the fixed leg 8 that stretches out on described entablature 9 downwards, the bottom of described fixed leg 8 is fixedly connected with that being useful on matches with described clamp of sensor 18 and is fixedly clamped the fixed head 7 of described weighing and force-measuring transducer to be measured 17, the bottom of described the second leading screw 22 is provided with sensor connector 15, the bottom of described sensor connector 15 is connected with standard weighing and force-measuring transducer 16, the pre-borne control system of described pressure comprises industrial control computer 27 and the data collecting card 28 that joins with described industrial control computer 27, bar code scanner 29, normal pressure measuring instrument 31 and testing pressure measuring instrument 32, all be pasted with the bar code 33 that storage inside has the test parameter of weighing and force-measuring transducer 17 to be measured on each described weighing and force-measuring transducer 17 to be measured, the signal input part of the signal output part of described standard weighing and force-measuring transducer 16 and described normal pressure measuring instrument 31 joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured 17 and described testing pressure dynamometer 32 joins, be connected on described multifunctional data acquisition card 28 for the first guide pin bushing 5-1 being moved downward the first limit switch 34 that extreme position detects, be used for the second guide pin bushing 5-2 is moved downward the second limit switch 35 that extreme position detects, the motor driver 37 that is used for the motor control switch 36 that the action of the first motor 19 is controlled and is used for the second motor 11 is driven, described the first limit switch 34 is arranged on the bottom of described the first guide pin bushing 5-1, described the second limit switch 35 is arranged on the bottom of described the second guide pin bushing 5-2, described motor control switch 36 is connected in the current supply circuit of the first motor 19, be provided with the current detection circuit module 38 that detects for the electric current to described the first motor 19 on described the first motor 19, described current detection circuit module 38 is joined with described motor control switch 36, described the second motor 11 joins with described motor driver 37.
As depicted in figs. 1 and 2, in the present embodiment, described lower shoe 2 is fixedly connected on described supporting leg 1 top by screw, the upper and lower of the upper and lower of described the first guide pillar 3-1 and described the second guide pillar 3-2 is provided with external thread, is provided be used to the first threaded hole of described the first guide pillar 3-1 that is threaded on described entablature 9 and lower shoe 2 and the second threaded hole of described the second guide pillar 3-2 that is used for being threaded.
In the present embodiment, described the first screw-threaded shaft elevator 4 is fixedly connected on described lower shoe 2 by the first screw-threaded shaft elevator base 23, the output shaft of described the first motor 19 is connected with the input shaft of described the first screw-threaded shaft elevator 4 by the first shaft coupling 24, and the side of described supporting leg 1 is fixedly connected with and is useful on the first motor cabinet 20 that described the first motor 19 is installed; In conjunction with Fig. 3 and Fig. 4, the top of described the first leading screw 10 is fixedly connected with by the bottom of leading screw joint flange 25 with described movable table 6, and the place, centre position, bottom of described movable table 6 is provided with a plurality of the 3rd threaded holes 39 for be fixedly connected with described leading screw joint flange 25 by screw; Two side roof parts of described movable table 6 are respectively arranged with a plurality of the 4th threaded holes 40 for be fixedly connected with described the first guide pin bushing 5-1 by screw and a plurality of the 5th threaded holes 41 for be fixedly connected with described the second guide pin bushing 5-2 by screw; The crown center position of described movable table 6 is provided with a plurality of the 6th threaded holes 42 for be fixedly connected with described clamp of sensor 18 by screw, in conjunction with Fig. 5 and Fig. 6, the bottom of described clamp of sensor 18 is provided with the 9th threaded hole 43 that matches with the 6th threaded hole 42.
In the present embodiment, described the second screw-threaded shaft elevator 14 is fixedly connected on described entablature 9 by the second screw-threaded shaft elevator base 26, the output shaft of described the second motor 11 is connected with the input shaft of described the second screw-threaded shaft elevator 14 by the second shaft coupling 13, and described entablature 9 tops are fixedly connected with the second motor cabinet 12 that is useful on described the second motor 11 of installation.
In the present embodiment, the upper and lower of described fixed leg 8 is provided with external thread, be provided with the 7th threaded hole be used to the described fixed leg 8 that is threaded on described entablature 9, be provided with the 8th threaded hole be used to the described fixed leg 8 that is threaded on described fixed head 7; Described sensor connector 15 is fixedly connected with by the bottom of screw with described the second leading screw 22, and described standard weighing and force-measuring transducer 16 is fixedly connected with by the bottom of screw with described sensor connector 15.
In the present embodiment, described the first motor 19 is alternating current generator.Described the second screw-threaded shaft elevator 14 is ball screw type elevator.Described the second motor 11 is servomotor, and described motor driver 37 is motor servo driver.Described pressure preload set-up of control system is in pressure preload switch board 30, and described pressure preload switch board 30 is arranged on described supporting leg 1 side, and described motor control switch 36 is relay.
During concrete enforcement, be filled with railway grease in described guide pin bushing.
In conjunction with Fig. 8, the pre-support method of weighing and force-measuring transducer automatic pressure of the present invention comprises the following steps:
Step 1, parameter initialization: adopt described bar code scanner 29 to read the pressure test parameter that is stored in the weighing and force-measuring transducer to be measured 17 in bar code 33, and the pressure test parameter that reads is uploaded to industrial control computer 27 in real time, and carry out the initialization setting by 27 pairs of pressure test parameters of operation industrial control computer;
Step 5, repeating step two are to step 4, until pressure preload number of times has reached weighing and force-measuring transducer 17 required pressure preload number of times to be measured;
step 6, weighing and force-measuring transducer 17 to be measured is removed stage makeup and costume: after the pressure preload finishes, by operation industrial control computer 27, the reverse control signal of input to the first motor 19, industrial control computer 27 is transferred to motor control switch 36 with described reverse control signal by data collecting card 28, control motor control switch 36 and connect the current supply circuit of the first motor 19, it is descending that the first motor 19 drives first screw-threaded shaft elevator 4 drive the first leading screws 10, the first leading screw 10 drives movable table 6, clamp of sensor 18 and weighing and force-measuring transducer to be measured 17 move downward, when the first guide pin bushing 5-1 moves downward the position that described the first limit switch 34 touches lower shoe 2, and when the second guide pin bushing 5-2 moves downward described the second limit switch 35 and touches the position of lower shoe 2, industrial control computer 27 collects the signal of the first limit switch 34 and the signal of the second limit switch 35 by data collecting card 28, industrial control computer 27 output the first motors 19 stop reverse control signal, and be transferred to motor control switch 36 by data collecting card 28, control the current supply circuit that motor control switch 36 disconnects the first motor 19, the first motor 19 stops counter-rotating, the first screw-threaded shaft elevator 4 is in self-locking state, manually with weighing and force-measuring transducer 17 to be measured from the interior taking-up of installation of sensors groove 21.
after above weighing and force-measuring transducer automatic pressure preload process finishes, industrial control computer 27 just can call weighing and force-measuring transducer static performance index computing module, and according to " weighing and force-measuring transducer detection rules " (JJG391-2005) to exporting zero point, Full-span output, nonlinearity, sluggish, , repeatability, degree of accuracy, sensitivity, the computing method requirement of these 9 static performance index of zero point drift and overload, the standard weighing and force-measuring transducer 16 that normal pressure measuring instrument 31 is read carries out analytical calculation at the measured value of weighing and force-measuring transducer to be measured 17 under different conditions that the measured value under different conditions and testing pressure measuring instrument 32 read, calculate 9 static performance index parameters of weighing and force-measuring transducer 17 to be measured.Utilize 9 normal datas of the weighing and force-measuring transducer to be measured 17 of the various models of setting up in advance, compare judgement with 9 static performance index parameters of the weighing and force-measuring transducer to be measured 17 that calculates, output judged result and 9 static performance index parameters that calculate.
During concrete enforcement, industrial control computer 27 can adopt the Access database to preserve standard weighing and force-measuring transducer 16 that normal pressure measuring instrument 31 reads measured value and the measured value of weighing and force-measuring transducer to be measured 17 under different conditions that read of testing pressure measuring instrument 32 under different conditions, and judged result and 9 static performance index parameters calculating are preserved.The functions such as in addition, industrial control computer 27 can also provide data search for the external world, shares, printing.
The above; it is only preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. weighing and force-measuring transducer automatic pressure preload equipment, it is characterized in that: comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg (1), be arranged on the lower shoe (2) at supporting leg (1) top, be disposed on the first guide pillar (3-1) and the second guide pillar (3-2) on lower shoe (2), and the entablature (9) that is arranged on the first guide pillar (3-1) and the second guide pillar (3-2) top, described the first guide pillar (3-1) and the second guide pillar (3-2) are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises the first screw-threaded shaft elevator (4) that is arranged on lower shoe (2) and the first motor (19) that is connected and is used for driving the first screw-threaded shaft elevator (4) action with the first screw-threaded shaft elevator (4), be connected with the first leading screw (10) on described the first screw-threaded shaft elevator (4), the top of described the first leading screw (10) is provided with the movable table (6) that can be under the drive of the first leading screw (10) moves up and down along the first guide pillar (3-1) and the second guide pillar (3-2), the both sides of described movable table (6) are respectively arranged with the first guide pin bushing (5-1) that matches with the first guide pillar (3-1) and the second guide pin bushing (5-2) that matches with the second guide pillar (3-2), the top of described movable table (6) is provided with clamp of sensor (18), the top of described clamp of sensor (18) has be used to the installation of sensors groove (21) that weighing and force-measuring transducer to be measured (17) is installed, described standard weighing and force-measuring transducer motion comprises the second screw-threaded shaft elevator (14) that is arranged on entablature (9) and the second motor (11) that is connected and is used for driving the second screw-threaded shaft elevator (14) action with the second screw-threaded shaft elevator (14), be connected with the second leading screw (22) on described the second screw-threaded shaft elevator (14), be connected with the fixed leg (8) that stretches out on described entablature (9) downwards, the bottom of described fixed leg (8) is fixedly connected with that being useful on matches with described clamp of sensor (18) and is fixedly clamped the fixed head (7) of described weighing and force-measuring transducer to be measured (17), the bottom of described the second leading screw (22) is provided with sensor connector (15), the bottom of described sensor connector (15) is connected with standard weighing and force-measuring transducer (16), the pre-borne control system of described pressure comprises industrial control computer (27) and the data collecting card (28) that joins with described industrial control computer (27), bar code scanner (29), normal pressure measuring instrument (31) and testing pressure measuring instrument (32), all being pasted with storage inside on each described weighing and force-measuring transducer to be measured (17) has the bar code (33) of the test parameter of weighing and force-measuring transducer to be measured (17), the signal input part of the signal output part of described standard weighing and force-measuring transducer (16) and described normal pressure measuring instrument (31) joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured (17) and described testing pressure dynamometer (32) joins, be connected on described multifunctional data acquisition card (28) for the first guide pin bushing (5-1) being moved downward the first limit switch (34) that extreme position detects, be used for the second guide pin bushing (5-2) is moved downward the second limit switch (35) that extreme position detects, the motor driver (37) that is used for the motor control switch (36) that the action of the first motor (19) is controlled and is used for the second motor (11) is driven, described the first limit switch (34) is arranged on the bottom of described the first guide pin bushing (5-1), described the second limit switch (35) is arranged on the bottom of described the second guide pin bushing (5-2), described motor control switch (36) is connected in the current supply circuit of the first motor (19), be provided with the current detection circuit module (38) that detects for the electric current to described the first motor (19) on described the first motor (19), described current detection circuit module (38) is joined with described motor control switch (36), described the second motor (11) joins with described motor driver (37).
2. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described lower shoe (2) is fixedly connected on described supporting leg (1) top by screw, the upper and lower of the upper and lower of described the first guide pillar (3-1) and described the second guide pillar (3-2) is provided with external thread, is provided be used to the first threaded hole of described the first guide pillar (3-1) that is threaded on described entablature (9) and lower shoe (2) and the second threaded hole of described the second guide pillar (3-2) that is used for being threaded.
3. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described the first screw-threaded shaft elevator (4) is fixedly connected on described lower shoe (2) by the first screw-threaded shaft elevator base (23), the output shaft of described the first motor (19) is connected with the input shaft of described the first screw-threaded shaft elevator (4) by the first shaft coupling (24), and the side of described supporting leg (1) is fixedly connected with and is useful on the first motor cabinet (20) that described the first motor (19) is installed; The top of described the first leading screw (10) is fixedly connected with by the bottom of leading screw joint flange (25) with described movable table (6), and the place, centre position, bottom of described movable table (6) is provided with a plurality of the 3rd threaded holes (39) for be fixedly connected with described leading screw joint flange (25) by screw; Two side roof parts of described movable table (6) are respectively arranged with a plurality of the 4th threaded holes (40) for be fixedly connected with described the first guide pin bushing (5-1) by screw and a plurality of the 5th threaded holes (41) for be fixedly connected with described the second guide pin bushing (5-2) by screw; The crown center position of described movable table (6) is provided with a plurality of the 6th threaded holes (42) for be fixedly connected with described clamp of sensor (18) by screw, and the bottom of described clamp of sensor (18) is provided with the 9th threaded hole (43) that matches with the 6th threaded hole (42).
4. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described the second screw-threaded shaft elevator (14) is fixedly connected on described entablature (9) by the second screw-threaded shaft elevator base (26), the output shaft of described the second motor (11) is connected with the input shaft of described the second screw-threaded shaft elevator (14) by the second shaft coupling (13), and described entablature (9) top is fixedly connected with the second motor cabinet (12) that is useful on described the second motor of installation (11).
5. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: the upper and lower of described fixed leg (8) is provided with external thread, be provided with the 7th threaded hole be used to the described fixed leg (8) that is threaded on described entablature (9), be provided with the 8th threaded hole be used to the described fixed leg (8) that is threaded on described fixed head (7); Described sensor connector (15) is fixedly connected with by the bottom of screw with described the second leading screw (22), and described standard weighing and force-measuring transducer (16) is fixedly connected with by the bottom of screw with described sensor connector (15).
6. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described the first motor (19) is alternating current generator.
7. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described the second screw-threaded shaft elevator (14) is ball screw type elevator.
8. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described the second motor (11) is servomotor, and described motor driver (37) is motor servo driver.
9. according to weighing and force-measuring transducer automatic pressure preload equipment claimed in claim 1, it is characterized in that: described pressure preload set-up of control system is in pressure preload switch board (30), described pressure preload switch board (30) is arranged on described supporting leg (1) side, and described motor control switch (36) is relay.
10. one kind is utilized the pre-support method of weighing and force-measuring transducer automatic pressure of automatic pressure preload equipment as claimed in claim 1, it is characterized in that the method comprises the following steps:
Step 1, parameter initialization: the pressure test parameter of the weighing and force-measuring transducer to be measured (17) that adopts described bar code scanner (29) to read to be stored in bar code (33), and the pressure test parameter that reads is uploaded to industrial control computer (27) in real time, and by operation industrial control computer (27), the pressure test parameter is carried out the initialization setting;
step 2, weighing and force-measuring transducer to be measured (17) clamps: at first, manually weighing and force-measuring transducer to be measured (17) is arranged in installation of sensors groove (21), then, by operation industrial control computer (27), the forward control signal of input to the first motor (19), industrial control computer (27) is transferred to motor control switch (36) with described action control signal by data collecting card (28), control motor control switch (36) and connect the current supply circuit of the first motor (19), it is up that the first motor (19) drives the first screw-threaded shaft elevator (4) drive the first leading screw (10), the first leading screw (10) drives movable table (6), clamp of sensor (18) and weighing and force-measuring transducer to be measured (17) move upward, current detection circuit module (38) detects and exports to motor control switch (36) in real time to the electric current of the first motor (19), when the current value that detects surpasses the current value that motor control switch (36) allows to pass through, motor control switch (36) disconnects the current supply circuit of the first motor (19), the first motor (19) stops forward, the first screw-threaded shaft elevator (4) is in self-locking state, at this moment, weighing and force-measuring transducer to be measured (17) has been installed between fixed head (7) and clamp of sensor (18),
step 3, weighing and force-measuring transducer to be measured (17) pressure-loaded: at first, described industrial control computer (27) detects the state of motor control switch (36) by data collecting card (28), after described motor control switch (36) being detected and having disconnected, described industrial control computer (27) respectively carries out the zero clearing calibration operation one time to described normal pressure measuring instrument (31) and testing pressure measuring instrument (32), after the zero clearing calibration finishes, normal pressure measuring instrument (31) reads standard weighing and force-measuring transducer (16) initial value and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads weighing and force-measuring transducer to be measured (17) initial value and is transferred to industrial control computer (27), then, by operation industrial control computer (27), the forward control signal of input to the second motor (11), industrial control computer (27) is transferred to motor driver (37) with described forward control signal by data collecting card (28), motor driver (37) drives the second motor (11) forward, it is descending that the second motor (11) drives the second screw-threaded shaft elevator (14), it is descending that the second screw-threaded shaft elevator (14) drives the second leading screw (22), the second leading screw (22) drives sensor connector (15) and standard weighing and force-measuring transducer (16) moves downward, normal pressure measuring instrument (31) reads in real time the force value that standard weighing and force-measuring transducer (16) detects and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads in real time the force value that weighing and force-measuring transducer to be measured (17) detects and is transferred to industrial control computer (27), industrial control computer (27) carries out analyzing and processing to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, according to comparative result output corresponding the second motor (11) speed control signal, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) drives the second motor (11) forward according to described the second motor (11) speed control signal, when standard weighing and force-measuring transducer (16) moves downward when touching described weighing and force-measuring transducer to be measured (17), namely begun the pressure-loaded process, described standard weighing and force-measuring transducer (16) and weighing and force-measuring transducer to be measured (17) have been subject to identical pressure, normal pressure measuring instrument (31) reads in real time the force value that standard weighing and force-measuring transducer (16) detects and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads in real time the force value that weighing and force-measuring transducer to be measured (17) detects and is transferred to industrial control computer (27), industrial control computer (27) carries out analyzing and processing to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, when the pressure test parameter that arranges in the pressure data of real-time Transmission and step 1 equates, industrial control computer (27) output the second motor (11) stops the action control signal, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) stops driving the second motor (11) forward, the second screw-threaded shaft elevator (14) is in self-locking state, after keeping a period of time, industrial control computer (27) reads record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission,
step 4, weighing and force-measuring transducer to be measured (17) discharge degree: when industrial control computer (27) read recorded pressure data after, the control signal of industrial control computer (27) output the second motor (11) counter-rotating certain angle, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) drives the second motor (11) counter-rotating, it is up that the second motor (11) drives the second screw-threaded shaft elevator (14), it is up that the second screw-threaded shaft elevator (14) drives the second leading screw (22), the second leading screw (22) drives sensor connector (15) and standard weighing and force-measuring transducer (16) moves upward, when the second motor (11) when being inverted to certain angle, the lower end of described standard weighing and force-measuring transducer (16) separates fully with described weighing and force-measuring transducer to be measured (17), at this moment, described industrial control computer (27) reads record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, then, described industrial control computer (27) respectively carries out one time the zero clearing calibration operation again to described normal pressure measuring instrument (31) and testing pressure measuring instrument (32), after the zero clearing calibration finished, described industrial control computer (27) read record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission again,
Step 5, repeating step two are to step 4, until pressure preload number of times has reached weighing and force-measuring transducer to be measured (17) required pressure preload number of times;
step 6, weighing and force-measuring transducer to be measured (17) is removed stage makeup and costume: after the pressure preload finishes, by operation industrial control computer (27), the reverse control signal of input to the first motor (19), industrial control computer (27) is transferred to motor control switch (36) with described reverse control signal by data collecting card (28), control motor control switch (36) and connect the current supply circuit of the first motor (19), it is descending that the first motor (19) drives the first screw-threaded shaft elevator (4) drive the first leading screw (10), the first leading screw (10) drives movable table (6), clamp of sensor (18) and weighing and force-measuring transducer to be measured (17) move downward, when the first guide pin bushing (5-1) moves downward the position that described the first limit switch (34) touches lower shoe (2), and when the second guide pin bushing (5-2) moves downward described the second limit switch (35) and touches the position of lower shoe (2), industrial control computer (27) collects the signal of the first limit switch (34) and the signal of the second limit switch (35) by data collecting card (28), industrial control computer (27) output the first motor (19) stops reverse control signal, and be transferred to motor control switch (36) by data collecting card (28), control the current supply circuit that motor control switch (36) disconnects the first motor (19), the first motor (19) stops counter-rotating, the first screw-threaded shaft elevator (4) is in self-locking state, manually weighing and force-measuring transducer to be measured (17) is taken out in installation of sensors groove (21).
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| CN103090956B (en) | 2014-09-24 |
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Effective date of registration: 20160310 Address after: 88 No. 252000, the Yellow River Road, hi tech Industrial Development Zone, Shandong, Liaocheng Patentee after: Nobot Intelligent Equipment (Shandong) Co., Ltd. Address before: 723001 School of physical and electrical engineering, Shaanxi University of Technology, Hantai District, Shaanxi, Hanzhoung Patentee before: Shaanxi Science and Engineering College |