CN102759940B - Full-function type bolt screwing shaft controller - Google Patents
Full-function type bolt screwing shaft controller Download PDFInfo
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- CN102759940B CN102759940B CN201210157224.4A CN201210157224A CN102759940B CN 102759940 B CN102759940 B CN 102759940B CN 201210157224 A CN201210157224 A CN 201210157224A CN 102759940 B CN102759940 B CN 102759940B
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Abstract
The invention discloses a full-function type bolt screwing shaft controller, which comprises an STC controller, and a torque signal detection unit, an execution switch, a drive execution unit, an encoder input unit, a communication unit and a display unit which are connected with the STC controller, wherein the STC controller is used for carrying out input detection and output control on a signal and processing data; the torque signal detection unit is used for detecting the torque borne by a screwing shaft; the execution switch is used for sending a command signal of executing screwing to the STC controller; the drive execution unit is used for controlling a servo motor drive screwing shaft to complete the screwing process by adopting the command; the encoder input unit is used for calculating a screwing angle of the screwing shaft; the communication unit is used for realizing the data transmission between the STC controller and an upper control unit; and the display unit is used for displaying the screwing torque, the screwing angle and the screwing state of the bolt screwing shaft. The full-function type bolt screwing shaft controller realizes the requirement of real-time control for the screwing torque and the screwing angle of a bolt, and is improved in stability, reliability, accuracy and assembly quality during bolt screwing.
Description
Technical field
The present invention relates to auto manufacturing's bolt automatic fastening field, particularly a kind of full function bolt tightening axis controller.
Background technology
The electronic machine for setting multi-rod screw that current domestic automobile manufacturing industry scene is used has many types, but the electronic machine for setting multi-rod screw of many manufacturer production, the precision of its screw-down torque and angle does not often reach production requirement, even ruptured by bolt tightening, and performance is very unstable.Analyzing its main cause is: the producer had adopts industrial control computer to add various data collecting plate card composition control core, and some employing programmable controllers (PLC) control, or their combination controls.Due in this several control method, the each several part coordination performance difference of the various data acquisition card application of industrial control computer or PLC program and Whole Response speed slow, so control system cannot be met to bolt tightening torque and the requirement of tightening angle real-time, cause the destruction on the impact and bolt of tightening precision, visible, the performance of electronic machine for setting multi-rod screw and precision thereof, mainly to the processing mode of bolt tightening control system real-time and the design of controller system structure.
Summary of the invention
In order to realize control system to bolt tightening torque and the requirement of tightening angle real-time, improve stability, reliability and precision during bolt tightening, accuracy, the consistance of moment in thorough solution bolted, improve the assembly quality of web member, the invention provides a kind of full function bolt tightening axis controller.
Described technical scheme is as follows:
A kind of full function bolt tightening axis controller, described bolt tightening axis controller is connected with single bolt tightening axle, and it comprises:
STC controller, the input for signal detects, export the process of control and data;
Torque signal detection unit, tightens the moment of torsion that axle bears during for detecting bolt tightening;
Perform switch, for sending the command signal performing and tighten action to described STC controller;
Drive performance element, receive the signal of described STC controller, and instruction controls servomotor drives and tighten axle and complete rundown process;
Encoder input unit, it is connected with described STC controller, for calculate tighten axle tighten angle;
Communication unit, for the data transmission between described STC controller and upper control unit;
Display unit, is connected with described STC controller, for showing the screw-down torque of bolt tightening axle, angle and tight condition.
Further, described bolt tightening axis controller also comprises watchdog circuit, for monitoring the operation of described STC controller.
Described display unit comprises digital pipe display circuit, tight condition pilot lamp output circuit and torque signal regulating circuit;
Described digital pipe display circuit is for showing screw-down torque, the angle of bolt tightening axle;
Described tight condition pilot lamp output circuit is for showing the tight condition of tightening axle, and described tight condition comprises display power supply, rotating forward, inverted status and tightens that the moment of torsion of result is high, moment of torsion is qualified, moment of torsion is low, angle is high, angle is qualified and angle is low;
Torque signal regulator, for zero point drift adjustment and the Gain tuning of described torque signal detection unit detection signal.
Described driving performance element comprises servo-driver, D/A converting circuit and latch, described latch receives the voltage signal of described STC controller, and described servo-driver is exported to after D/A converting circuit conversion, control servomotor and perform screw-down torque.
Described communication unit comprises an a RS-232 and RS-485 Communications Control Interface, transmits for realizing data with upper control unit.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
(1) the present invention is by automation control system modularization integration mode, and automaticity is high, easy and simple to handle, and reliability is high, and modular construction is convenient to Fast Installation, is suitable for the extensive operation and maintenance of automobile assembly line;
(2) the present invention is by preparing a controller to each bolt tightening axle, self contained function is carried out to single axle of tightening, thoroughly overcomes ubiquitous false torque manifestations in bolted, simultaneously, by each display of tightening axle screw-down torque and angle, just can understand each moment of torsion tightening axle, angle very intuitively, qualified, defective, the states such as fault, solve accuracy, the consistance of moment in bolted, substantially increase the assembly quality of web member;
(3) communication unit is provided with on the controller, multijoint control network can be formed easily, by being configured with I/O IO interface, can with the field control equipment connections such as PLC, the torque signal of wide region detects simultaneously, and what can control different model tightens axle, and has the repertoire controlling to tighten axle, with flexibility feature, multi items can be adapted to.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the core control circuit structured flowchart of full function bolt tightening axis controller provided by the present invention;
Fig. 2 is the Facad structure of full function bolt tightening axis controller provided by the present invention;
Fig. 3 is the side structure of full function bolt tightening axis controller provided by the present invention;
Fig. 4 is the structure of full function bolt tightening axis controller provided by the present invention.
In figure:
1-front end Presentation Function panel; 2-controller display screen; 3-controller tight condition pilot lamp; 4-torque signal regulator;
5-mounting hole; 6-heat sink; 7-rear end control interface function panel; 8-torque sensor signal interface; 9-controller power source interface; 10-On-off signal/output interface; 11-RS-232 and RS-485 communication interface; 12-Serve Motor Control interface.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The invention provides a kind of full function bolt tightening axis controller, each bolt tightening axle wherein all connects a bolt tightening axis controller, and as shown in Figure 1, it comprises its structure:
STC controller, the input for signal detects, export the process of control and data;
Torque signal detection unit, tightens the moment of torsion that axle bears during for detecting bolt tightening;
Perform switch, for sending the command signal performing and tighten action to described STC controller;
Drive performance element, receive the signal of described STC controller, and instruction controls servomotor drives and tighten axle and complete rundown process;
Encoder input unit, it is connected with described STC controller, for calculate tighten axle tighten angle;
Communication unit, for the data transmission between described STC controller and upper control unit;
Display unit, is connected with described STC controller, for showing the screw-down torque of bolt tightening axle, angle and tight condition;
Watchdog circuit, for monitoring the operation of described STC controller.
Wherein display unit comprises digital pipe display circuit, tight condition pilot lamp output circuit and torque signal regulating circuit, controller display screen 2, controller tight condition pilot lamp 3 and torque signal regulator 4 respectively in corresponding diagram 2;
Digital pipe display circuit is for showing screw-down torque, the angle of bolt tightening axle, the screw-down torque of bolt tightening axle and angle display unit, moment of torsion and the angle of rundown process can be shown in real time, this moment of torsion tightening result and angle is shown at the end of tightening, when a failure occurs, failure code can be shown, example: as data transmission fault, then reveal codes E01; Sensor alarm, then reveal codes E03; Servo driving is reported to the police, then reveal codes E04.
Tight condition pilot lamp output circuit is wherein for showing the tight condition of tightening axle, tight condition comprises display power supply, rotating forward, inverted status and tightens that the moment of torsion of result is high, moment of torsion is qualified, moment of torsion is low, angle is high, angle is qualified and angle is low, as shown in Figure 2;
Torque signal regulator, for zero point drift adjustment and the Gain tuning of described torque signal detection unit detection signal, as shown in Figure 2.
Drive performance element to comprise servo-driver, D/A converting circuit and latch, latch receives the voltage signal of STC controller, and exports servo-driver to after D/A converting circuit conversion, controls servomotor and performs screw-down torque.
Communication unit comprises an a RS-232 and RS-485 Communications Control Interface, transmits for realizing data with upper control unit.
Full function bolt tightening axis controller provided by the present invention adopts Modular Structure Design, and each axis controller of tightening independently can control a set of bolt tightening axle, and its one-piece construction as shown in Figure 2, Figure 3 and Figure 4.Mainly contain front end Presentation Function panel 1 and rear end control interface function panel 7, surrounding is furnished with heat sink 6, and is furnished with four mounting-positioning holes 5, forms the panel type mounting structure of bolt tightening axis controller.
Controller heat sink is that the heat radiator 6 of aluminium profiles material forms, for the heat radiation (see Fig. 3) of chip.
In the interface control function district of rear end control interface function panel 7 by torque sensor signal interface 8, controller power source interface 9, RS-232 and RS-485 communication interface 11, Serve Motor Control interface 12, On-off signal/output interface 10 forms (see Fig. 4).
The principle of work of full function bolt tightening axis controller:
As shown in Figure 1, it is its key control unit with STC controller to the core circuit plate structure of full function bolt tightening axis controller, and the input being responsible for various signal detects, exports the Processing tasks of control and data.After the switching value with light-coupled isolation receives rotating forward, reversion, startup, stop signal, start rundown process and control; In rundown process, A/D analog to digital conversion circuit receives the input voltage (-10v voltage is to+10v voltage) of torque signal detection unit; Meanwhile, the encoder input unit of servo-driver scaling down processing inputs to the counter of STC controller by optocoupler, is used for calculating angle value; D/A converting circuit is used for output voltage signal, and the voltage signal instruction of output is to servo-driver, and servo-driver instruction AC servo motor driving mechanical tightens axle to complete rundown process; There is LED light export and the outside Presentation Function of two row's group of four figures pipes displays, LED light is used for display power supply, rotating forward, reverse and tighten that the moment of torsion of result is high, moment of torsion is qualified, moment of torsion is low, angle is high, angle is qualified, angle is low; Each communication unit tightening axis controller has an a RS-232 and RS-485 Communications Control Interface, be used for accepting external control computing machine transmits the various technological parameter tightened and controling parameters signal, complete various course of action according to these parameters, and these state procedure values are sent to external control computing machine by it.There is the supervision that watchdog circuit is responsible for controller in whole program operation process, prevent the situation of deadlock.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. adopt a full function bolt tightening axis controller for Modular Structure Design, it is characterized in that, described bolt tightening axis controller is connected with single bolt tightening axle, and it comprises:
STC controller, the input for signal detects, export the process of control and data;
Torque signal detection unit, tightens the moment of torsion that axle bears during for detecting bolt tightening;
Perform switch, for sending the command signal performing and tighten action to described STC controller;
Drive performance element, receive the signal of described STC controller, and instruction controls servomotor drives and tighten axle and complete rundown process;
Encoder input unit, it is connected with described STC controller, for calculate tighten axle tighten angle;
Communication unit, for the data transmission between described STC controller and upper control unit;
Display unit, is connected with described STC controller, for showing the screw-down torque of bolt tightening axle, angle and tight condition;
Watchdog circuit, for monitoring the operation of described STC controller;
Described display unit comprises digital pipe display circuit, tight condition pilot lamp output circuit and torque signal regulating circuit;
Described digital pipe display circuit, for showing screw-down torque, the angle of bolt tightening axle, when a failure occurs, can show failure code;
Described tight condition pilot lamp output circuit is for showing the tight condition of tightening axle, and described tight condition comprises display power supply, rotating forward, inverted status and tightens that the moment of torsion of result is high, moment of torsion is qualified, moment of torsion is low, angle is high, angle is qualified and angle is low;
Torque signal regulating circuit, for zero point drift adjustment and the Gain tuning of described torque signal detection unit detection signal;
Described driving performance element comprises servo-driver, D/A converting circuit and latch, described latch receives the voltage signal of described STC controller, and described servo-driver is exported to after D/A converting circuit conversion, described servo-driver controls servomotor and performs screw-down torque;
Described bolt tightening axis controller front end arranges Presentation Function panel, and rear end arranges control interface function panel, and is furnished with four mounting-positioning holes, forming surface board mounting structure.
2. full function bolt tightening axis controller according to claim 1, is characterized in that,
Described communication unit comprises an a RS-232 and RS-485 Communications Control Interface, transmits for realizing data with upper control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157224.4A CN102759940B (en) | 2012-05-21 | 2012-05-21 | Full-function type bolt screwing shaft controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157224.4A CN102759940B (en) | 2012-05-21 | 2012-05-21 | Full-function type bolt screwing shaft controller |
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| Publication Number | Publication Date |
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| CN102759940A CN102759940A (en) | 2012-10-31 |
| CN102759940B true CN102759940B (en) | 2015-06-10 |
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| CN201210157224.4A Active CN102759940B (en) | 2012-05-21 | 2012-05-21 | Full-function type bolt screwing shaft controller |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200420B (en) * | 2015-04-30 | 2019-08-23 | 北京福田康明斯发动机有限公司 | Control device, system and method are tightened/unscrewed to a kind of bolt |
| CN108071655A (en) * | 2016-11-16 | 2018-05-25 | 孙愉后 | Indicate the fastener of the loose amount of moving back |
| CN106602967B (en) * | 2017-01-05 | 2023-11-14 | 四川埃姆克伺服科技有限公司 | Integrated motor drive unit structure |
| CN107329452A (en) * | 2017-07-07 | 2017-11-07 | 泰州职业技术学院 | A kind of nut tightening machine control system and its method |
| CN113505900B (en) * | 2021-07-11 | 2023-12-01 | 中国国家铁路集团有限公司 | Digital maintenance platform and method for auxiliary converter module of motor train unit |
| CN115356035B (en) * | 2022-10-20 | 2023-02-07 | 华东交通大学 | Bolt tightening torque detection system and detection method |
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| WO2007062229A1 (en) * | 2005-11-28 | 2007-05-31 | Snap-On Incorporated | Torque-angle instrument |
| CN201249346Y (en) * | 2008-06-20 | 2009-06-03 | 南车戚墅堰机车有限公司 | A connecting rod wreching screw tool |
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| CN201945843U (en) * | 2010-11-12 | 2011-08-24 | 浙江大学 | Torque loading controller |
| CN102375459A (en) * | 2010-08-10 | 2012-03-14 | 中国气动工业股份有限公司 | Torque control device of power locking tool and control process thereof |
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| WO2007062229A1 (en) * | 2005-11-28 | 2007-05-31 | Snap-On Incorporated | Torque-angle instrument |
| CN201249346Y (en) * | 2008-06-20 | 2009-06-03 | 南车戚墅堰机车有限公司 | A connecting rod wreching screw tool |
| CN201645425U (en) * | 2010-03-17 | 2010-11-24 | 银川西部大森数控技术有限公司 | Intelligent bolt tightening machine |
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