CN2835989Y - Device for checking cupping testing machine - Google Patents

Device for checking cupping testing machine Download PDF

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Publication number
CN2835989Y
CN2835989Y CN 200520009977 CN200520009977U CN2835989Y CN 2835989 Y CN2835989 Y CN 2835989Y CN 200520009977 CN200520009977 CN 200520009977 CN 200520009977 U CN200520009977 U CN 200520009977U CN 2835989 Y CN2835989 Y CN 2835989Y
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CN
China
Prior art keywords
cupping
testing machine
circuit
signal
data
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Expired - Fee Related
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CN 200520009977
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Chinese (zh)
Inventor
周兆丰
陈骥
曹久大
叶锦成
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Chongqing Jianshe Motorcycle Co Ltd
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Chongqing Jianshe Motorcycle Co Ltd
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Priority to CN 200520009977 priority Critical patent/CN2835989Y/en
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Abstract

The utility model discloses a device for checking a cupping testing machine, which is composed of three grating displacement sensors, a pressing force sensor, a strain type multi-component force sensor, a data processor for a multi-path force sensor and an industrial portable computer, wherein the grating displacement sensors is used for measuring the flatness, the coaxiality, the verticality and the cupping indicated value; the pressing force sensor is used for measuring the pressing force; the strain type multi-component force sensor are used for measuring the clamping force; the industrial portable computer is provided with three coordinate grating signal processing frequency multiplication cards, a USB data interface and a CPU of a single chip computer. The utility model can integrally test metering performances of the dimensional tolerance and the surface roughness of a press mould, a cushion mould and a punch of the cupping testing machine, the coaxality of an axial line of the press mold and an axial line of a ball part of the punch, the verticality of the contact working face of the cushion mould and the sample and the axial line of the ball part of the punch, the flatness of the indicated zero position of a cupping indicated value device, the cupping indicated value of the displacement of the punch, the impact compression test force and the clamping force. The utility model provides basis for calibrating the cupping testing machine.

Description

Be used to calibrate the device of cupping testing machine
Technical field
The utility model relates to a kind of metrological standard unit, particularly a kind of portable device that is used to calibrate cupping testing machine.
Background technology
The principle of work of cupping testing machine is with corresponding constant force, sample (sheet metal, band) is clamped between pressing mold and the pad mould, and with the regulation the ball shape drift apply horizontal stamping press to sample, sample is pressed in the pressing mold, till sample occurred penetrating the crack, the degree of depth of drift pressing in sample was the cupping indicating value of sample at this moment. and cupping testing machine also can be made non-ferrous metal and carry out the bursting strength test towards cup test or to on-metallic article.
Cupping testing machine is as a kind of measuring appliance, and meter characteristic is the major technology requirement, and its metering performance requires mainly to comprise: the right alignment of pressing mold axis and drift bulb axis; The workplace that the pad mould contacts with sample and the verticality of drift bulb axis; The flatness of cupping indicating value device indication zero-bit; Punch test power; Clamping force; Six technical indicators such as drift displacement cupping indicating value.Yet the factor that influences the AEG-process result mainly contains the relative position error of sample clamping force, punch test power, drift displacement and drift, pressing mold and pad mould etc., thereby before AEG-process, need cupping testing machine is calibrated, but do not solve owing at present the calibration of sample clamping force is had corresponding means always, so also there is not to carry out cupping testing machine the device of integrated correction so far.Though China has formulated existing JJG583-1988 cupping testing machine vertification regulation, the measurement mechanism of existing cupping testing machine, mainly be to measure the drift and flatness, right alignment and the verticality of filling up mould, pressing mold, cupping indicating value etc. of cupping testing machine, because of the calibration method of sample clamping force can only adopt indirect calibration method, because the position and the user mode of calibrating are inconsistent, can't determine its meter characteristic, thereby the azimuthal error of cupping testing machine punch test power, clamping force is not stipulated, so the calibration method of this vertification regulation still can't be implemented.In addition, the measurement mechanism of existing cupping testing machine is to measure by dial indicator to show to flatness, right alignment and verticality, the cupping indicating value of the cupping testing machine that measures.
Summary of the invention
The purpose of this utility model provides a kind of device that is used to calibrate cupping testing machine, it can the composite measurement cupping testing machine verticality, cupping indicating value that cupping indicating value device is indicated zero-bit flatness, drift displacement, punch test power, the metering performance of clamping force of right alignment, workplace that the pad mould contact with sample and drift bulb axis of pressing mold axis and drift bulb axis, the tracing to the source of solution cupping testing machine value.
The purpose of this utility model is achieved in that and comprises the flatness that is respectively applied for the measurement cupping testing machine, right alignment and verticality, three grating displacement sensors of cupping indicating value, and stamping press sensor of measuring stamping press, it is characterized in that: the signal that described three grating displacement sensors measure is handled through the three-dimensional grating signal respectively and is imported singlechip CPU after the frequency multiplication card is handled, described stamping press sensor and being used to is measured signal that the strain type force sensor for multiple components of clamping force measures respectively after multichannel force sensor data processor processing, by data-interface USB input singlechip CPU.
Owing to adopted such scheme, the three-dimensional grating digital display device employing of this calibrating installation is handled the three-dimensional grating signal that three road grating micrometer circuit are integrated in 20 frequencys multiplication of a utilization CPLD on the frequency multiplication card, be used to handle the signal of three grating displacement sensors transmission of flatness, right alignment and the verticality of measuring cupping testing machine, cupping indicating value, the volume of three-dimensional grating digital display device is reduced, and improved antijamming capability and reliability.Adopted strain type force sensor for multiple components to be used to measure the clamping force of cupping testing machine to sample, can measure simultaneously multiple spot power, solved cupping testing machine to the indicating value of sample clamping force and the calibration problem of azimuthal error, make this calibrating installation have the function of cupping testing machine being carried out integrated correction, the overall picture that can reflect all cupping testing machines meter characteristic in doing the AEG-process process substantially, thus can be to cupping testing machine punch test power, the azimuthal error of clamping force is stipulated, and the detection method of the vertification regulation of the national cupping testing machine of formulating can specifically be implemented.The three-dimensional grating signal of this calibrating installation is handled the frequency multiplication card and is installed in the industrial portable computer, and the multichannel force sensor data processor adopting Universal USB data-interface and the industrial portable computer of force measurement sensor carried out data transmission, the device that is used in the calibration cupping testing machine becomes the integrated portable calibrating installation of real perfect in shape and function, when increasing work efficiency, give with survey crew and work greatly conveniently, and guaranteed integrality, reliability and the security of measurement data.This calibrating installation can carry out automatic data acquisition and processing, and cooperates with external device, and the calibration result that obtains, raw readings, calibration certificate etc. are generated and print.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is that three-dimensional grating signal of the present utility model is handled frequency multiplication card logic diagram of circuit:
Fig. 3 is the synoptic diagram of strain type force sensor for multiple components of the present utility model.
Embodiment
Referring to Fig. 1, this calibrating installation is by the grating displacement sensor 1# of the cupping indicating value device indication zero-bit flatness that is used to measure cupping testing machine, the right alignment of measuring pressing mold axis and drift bulb axis with fill up the grating displacement sensor 2# that mould contacts the verticality of the workplace of sample and drift bulb axis, measure the grating displacement sensor 3# of the cupping indicating value of drift displacement, measure the stamping press sensor of stamping press, measure the strain type force sensor for multiple components of clamping force, multichannel force sensor data processor, the three-dimensional grating signal is handled the frequency multiplication card, the usb data interface, singlechip CPU, and industrial portable computer is formed.Three-dimensional grating signal processing frequency multiplication card, usb data interface, singlechip CPU are installed in the industrial portable computer, the three-dimensional grating signal is handled frequency multiplication card, corresponding with the singlechip CPU respectively connection of usb data interface, three grating displacement sensor 1#, 2#, 3# handle the corresponding connection of frequency multiplication card by lead with the three-dimensional grating signal respectively, stamping press sensor, strain type force sensor for multiple components are respectively by lead and the corresponding connection of multichannel force sensor data processor, and multichannel force sensor data processor connects the usb data interface by lead.The signal that described three grating displacement sensor 1#, 2#, 3# measure is handled through the three-dimensional grating signal respectively and is imported singlechip CPU after the frequency multiplication card is handled, the signal that described stamping press sensor and strain type force sensor for multiple components measure is respectively after multichannel force sensor data processor processing, by data-interface USB input singlechip CPU.
Handling the frequency multiplication card referring to Fig. 2, described three-dimensional grating signal is 20 process of frequency multiplication circuit of three-dimensional grating signal, and three amplifying circuits, three 5 frequency multiplier circuits, two complex programmable logic device (CPLD)s 1, CPLD2 of being handled respectively by the flatness signal that three grating displacement sensor 1#, 2#, 3# are measured, right alignment and verticality signal, cupping indicating value signal form.Flatness, right alignment and verticality, cupping indicating value signal are handled back input singlechip CPU through an amplifying circuit, 5 frequency multiplier circuit, complex programmable logic device (CPLD) 1, a complex programmable logic device (CPLD) 2 respectively.Be integrated with three groups of circuit that are in series by integer circuit, 4 frequency multiplier circuits, direction judgment circuit in the described complex programmable logic device (CPLD) 1, the corresponding road signal that grating displacement sensor transfers out of its every group of circuit.Be integrated with three in reversible counting circuit, control logic module, data clear circuit, data-latching circuit and data bus interface, address bus interface, read-write control interface in the described complex programmable logic device (CPLD) 2; Its control logic module is connected with three reversible counting circuit, data clear circuit, circuit that data are deposited, data bus interface, address bus interface, read-write control interface respectively; The corresponding road signal that grating displacement sensor transfers out of each reversible counting circuit; Data bus interface, address bus interface, the corresponding singlechip CPU that connects of read-write control interface.
Referring to Fig. 3, the described strain type force sensor for multiple components that is used to measure clamping force is one an elastic body 11 that three component parts are arranged is set that the cup dolly 3 of elastic body 11 is connected on the annular shell 2 by bolted in annular shell 2.Three component parts of described elastic body 11 etc. divide 360 ° of circles, and the equal in length of each component part is useful on the gap 7 that isolates each component between three component parts of elastic body 11, and this gap 7 is run through base 3 and formed perforation.Cup dolly 3 lower ends of described elastic body 11 are useful on the step cutting pattern of location, and this base 3 is the one-piece construction of one machine-shaping with elastic body 11.The upper surface of each component part of described elastic body 11 is equipped with the stress point 1 of a projection, and this stress point 1 is centered close to the vertical symmetrical plane of each component part.Stress point 1 below is provided with four transverse holes 5 symmetrically, and two hole horizontals of each side are arranged side by side.The stress point 1 of each component part to the distance at elastic body 11 centers equates, between four holes 5 of stress point 1 corresponding to symmetry.Be evenly equipped with four small through hole on the elastomeric walls circumference between the hole 5 of symmetry, wherein two holes are positioned on the diameter coordinate X-axis, and two holes are positioned on the diameter coordinate Y-axis.Each component part of elastic body 11 is equipped with and makes this component part form the strip through-hole of simple beam structure, and strip through-hole is positioned at the below in two levels hole 5 arranged side by side, the length of strip through-hole 8 approximately greater than the distance between the outer end in two holes arranged side by side.The circle centre position on the elastomeric walls two sides between the hole 5 of symmetry respectively posts a resistance strain gage 6, and four resistance strain gages 6 of each component part connect to form a measuring bridge by lead, and measuring bridge transfers signals to multichannel force sensor data processor.
Use this calibrating installation that cupping testing machine is calibrated:
The measurement plane degree
In the cupping testing machine calibration measurement System menu of computing machine, click measurement of planeness button, eject measurement of planeness interface, select the passage of corresponding data collecting card according to employed grating displacement sensor 1#.At first flatness indicating value measurement mechanism is positioned on the flat board, grating displacement sensor 1# precompressed 2mm is clamped on the flatness indicating value measurement mechanism, click reset button, making the grating sensor displayed value is zero; Again the pad mould of cupping testing machine being risen to working position stops.Subsequently flatness indicating value measurement mechanism is moved on the pad mould, and the contact of grating displacement sensor gauge head is contacted with drift top peak, click data is gathered button, and computing machine reads in the displacement data of grating sensor this moment automatically.Carry out five duplicate measurementss by said process, computing machine gets automatically that maximal value is this error in five duplicate measurementss, then as the flatness according to the calibration cupping testing machine.
Coaxality measurement
In the cupping testing machine calibration measurement System menu of computing machine, click the coaxality measurement button, eject the coaxality measurement interface, select the passage of corresponding data collecting card according to employed grating displacement sensor 2#.Take off drift and pressing mold and change coaxality measurement rotary head and coaxality measurement tube, apply the clamping force of 2~3kN; The coaxality measurement lever is placed in the measurement rotary head by the head circular hole, grating displacement sensor 2# precompressed 2mm is clamped on the coaxality measurement lever again, click reset button, making the grating sensor displayed value is zero; In clockwise slow one week of wheel measuring lever, click data is gathered button and is evenly gathered eight points; With testing machine drift rising 20mm, to measure in the same way, computing machine will calculate extreme difference (maximum is poor with minimum indicating value) and cupping testing machine right alignment automatically.Then as right alignment according to the calibration cupping testing machine.
Squareness measurement
In the cupping testing machine calibration measurement System menu of computing machine, click the squareness measurement button, eject the squareness measurement interface, select the passage of corresponding data collecting card according to employed grating displacement sensor 2#.The testing machine head is opened, taken off the drift rotary head and change the squareness measurement rotary head, take off the pad mould and put the squareness measurement tube; The verticality appliance special for detecting is placed in the measurement rotary head, grating displacement sensor 2# precompressed 2mm is clamped on the appliance special for detecting again, click reset button, making the grating sensor displayed value is zero; Grating displacement sensor 2# rotates a circle around punch holder pilot hole axis, evenly gathers the indicating value more than eight points simultaneously in this circumference; During every one predetermined sampling location, click data is gathered button, and computing machine reads in the displacement data of grating displacement sensor this moment automatically; After eight point data collections were finished, computing machine calculated extreme difference (maximum is poor with minimum indicating value) and cupping testing machine verticality automatically.Then as verticality according to the calibration cupping testing machine.
The cupping indicating value is measured
Click Erichsen number measurement button in the cupping testing machine calibration measurement System menu of computing machine, eject Erichsen number and measure the interface, input needs the cupping indicating value measurement point nominal indicating value of measurement.Rise the pad mould until stopping, cupping indicating value device is positioned on the pad mould, again grating displacement sensor 3# is placed that precompressed 2mm tightens up in the cupping indicating value device; Before the measurement, click reset button, making the grating displacement sensor displayed value is zero.Start cupping testing machine, drift is risen reposefully, and when the cupping testing machine indicating instrument reached cupping indicating value measurement point nominal indicating value, click data was gathered button, computing machine reads in the measured value of grating displacement sensor 3# this moment automatically, and process is carried out five duplicate measurementss like this.After each time measurement of each calibration point was finished, computing machine calculated the error of indication, relative error of indicating value and indicating value repeatability automatically.
Stamping press is measured
In the cupping testing machine calibration measurement System menu of computing machine, click stamping press and measure button, eject stamping press and measure the interface, input nominal test power kN.The AEG-process machine head is opened, pressed dynamic test machine drift rising button, clockwise slow rotary punching power speed knob makes drift a little more than pad mould surface; Side with stamping press sensor strip concave spherical surface is placed on the drift again, covers head to the counter clockwise direction spin locking; The pad mould that rises stops during apart from the about 1mm of pressing mold until the stamping press sensor, clicks reset button, and it is zero making the force transducer displayed value.Being as the criterion with the cupping testing machine indicating instrument slowly applies punch test power, and when test power was added to calibration point, click data was gathered button, and computing machine reads in the indicating value of stamping press sensor this moment automatically.After five duplicate measurementss were finished, computing machine calculated relative error of repeatability in the indicating value and relative error of indicating value automatically.Then as stamping press according to calibrating, calibration cupping testing machine.
Clamping force is measured
In the cupping testing machine calibration measurement System menu of computing machine, click clamping force and measure button, eject clamping force and measure the interface, input nominal test power kN.The testing machine head is opened, taken off pressing mold, change special die.Sensor sleeve is enclosed within on the pad mould again, puts into strain type force sensor for multiple components and cover head, click reset button, making the force transducer displayed value is zero, is rotated counterclockwise the head locking; Being as the criterion with the cupping testing machine indicating instrument steadily applies clamping force, and when test power was loaded on calibration point, click data was gathered button, and computing machine reads in the indicating value that clamps strain type force sensor for multiple components this moment automatically.(0 °) duplicate measurements is 3 times on the initial installation site of strain type force sensor for multiple components, and the force sensor for multiple components of rotational strain formula is again measured on the orientation with respect to 90 °, 180 ° of initial position and 270 °.After each time measurement of each calibration point is finished, computing machine just calculates automatically in each magnitude and clamps test power value, comprises make a concerted effort mean value, each component mean value, repeatability, relative error of indicating value and azimuthal error on making a concerted effort on 0 ° of orientation of strain type force sensor for multiple components, 0 ° of orientation of strain type force sensor for multiple components.Then as clamping force according to the calibration cupping testing machine.
This calibrating installation is fit to on-the-spot the use, and the value that can guarantee measurement result can carry out automatic data acquisition and processing accurately and reliably, and the calibration result of acquisition can generate and print raw readings, calibration certificate etc.This device clamping force relative error of indicating value uncertainty of measurement U 95=0.15%[k 95=t 95(52)=2.0], displacement measurement system error of indication uncertainty of measurement U 95=0.07%[k 95=t 95(23)=2.09], can satisfy the requirement of cupping testing machine calibration fully.

Claims (7)

1. device that is used to calibrate cupping testing machine, comprise and be respectively applied for the flatness of measuring cupping testing machine, right alignment and verticality, three grating displacement sensors of cupping indicating value, and stamping press sensor of measuring stamping press, it is characterized in that: the signal that described three grating displacement sensors measure is handled through the three-dimensional grating signal respectively and is imported singlechip CPU after the frequency multiplication card is handled, described stamping press sensor and being used to is measured signal that the strain type force sensor for multiple components of clamping force measures respectively after multichannel force sensor data processor processing, by usb data interface input singlechip CPU.
2. the device that is used to calibrate cupping testing machine according to claim 1 is characterized in that: it is 20 process of frequency multiplication circuit of three-dimensional grating signal that described three-dimensional grating signal is handled the frequency multiplication card.
3. the device that is used to calibrate cupping testing machine according to claim 2, it is characterized in that: 20 process of frequency multiplication circuit of described three-dimensional grating signal are by to the flatness signal, right alignment and verticality signal, three amplifying circuits that cupping indicating value signal is handled respectively, three 5 frequency multiplier circuits, two complex programmable logic device (CPLD)s 1, CPLD2 forms, flatness, right alignment and verticality, cupping indicating value signal is respectively via an amplifying circuit, one 5 frequency multiplier circuit, complex programmable logic device (CPLD) 1, complex programmable logic device (CPLD) 2 is handled back input singlechip CPU.
4. the device that is used to calibrate cupping testing machine according to claim 3, it is characterized in that: be integrated with three groups of circuit that are in series by integer circuit, 4 frequency multiplier circuits, direction judgment circuit in the described complex programmable logic device (CPLD) 1, the corresponding road signal that grating displacement sensor transfers out of its every group of circuit.
5. the device that is used to calibrate cupping testing machine according to claim 3, it is characterized in that: be integrated with three in reversible counting circuit in the described complex programmable logic device (CPLD) 2, control logic module, the data clear circuit, data-latching circuit and data bus interface, address bus interface, the read-write control interface, its control logic module respectively with three reversible counting circuit, the data clear circuit, data-latching circuit, data bus interface, address bus interface, the read-write control interface connects, the corresponding road signal that grating displacement sensor transfers out of each reversible counting circuit, data bus interface, address bus interface, the corresponding singlechip CPU that connects of read-write control interface.
6. the described device that is used to calibrate cupping testing machine according to claim 1 is characterized in that: described three-dimensional grating signal processing frequency multiplication card, usb data interface, singlechip CPU are installed in the industrial portable computer.
7. the device that is used to calibrate cupping testing machine according to claim 1, it is characterized in that: the described strain type force sensor for multiple components that is used to measure clamping force is to be connected with an elastic body (11) that has three component parts at least in the annular shell (2), the upper surface of each component part of elastic body (11) is equipped with the stress point (1) of a projection, stress point (1) below is provided with four transverse holes (5) symmetrically, the circle centre position on the elastomeric walls two sides between the hole (5) of symmetry respectively posts a resistance strain gage (6), the resistance strain gage of each component part (6) connects to form a measuring bridge by lead, and measuring bridge transfers signals to multichannel force sensor data processor.
CN 200520009977 2005-09-19 2005-09-19 Device for checking cupping testing machine Expired - Fee Related CN2835989Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504282B (en) * 2009-03-19 2010-12-29 上海交通大学 Measuring device and method for large-dimension slewing platform slide rail flatness
CN102756488A (en) * 2011-04-25 2012-10-31 南京通孚轻纺有限公司 Automatic calibrating method of stamping die and automatic calibrating punch press
CN104165801A (en) * 2014-08-21 2014-11-26 江苏大学 Automatic sheet positioning and failure prediction device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504282B (en) * 2009-03-19 2010-12-29 上海交通大学 Measuring device and method for large-dimension slewing platform slide rail flatness
CN102756488A (en) * 2011-04-25 2012-10-31 南京通孚轻纺有限公司 Automatic calibrating method of stamping die and automatic calibrating punch press
CN102756488B (en) * 2011-04-25 2014-11-19 南京通孚轻纺有限公司 Automatic calibrating method of stamping die
CN104165801A (en) * 2014-08-21 2014-11-26 江苏大学 Automatic sheet positioning and failure prediction device
CN104165801B (en) * 2014-08-21 2017-02-22 江苏大学 Automatic sheet positioning and failure prediction device

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Granted publication date: 20061108

Termination date: 20130919