CN203542479U - Current feedback type numerical control electric screw driver - Google Patents
Current feedback type numerical control electric screw driver Download PDFInfo
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- CN203542479U CN203542479U CN201320538909.3U CN201320538909U CN203542479U CN 203542479 U CN203542479 U CN 203542479U CN 201320538909 U CN201320538909 U CN 201320538909U CN 203542479 U CN203542479 U CN 203542479U
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- current feedback
- numerical control
- control electric
- screw driver
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Abstract
The utility model discloses a current feedback type numerical control electric screw driver. The current feedback type numerical control electric screw driver comprises a control cabinet and a screw driver body, wherein the control cabinet is connected with the screw driver body through a control cable; a controller and a switching power source are arranged in a cabinet body of the control cabinet; a motor, a motor reduction gearbox and a driving shaft are arranged in a barrel body of the screw driver body; a connector and a screw driver bit are arranged at the two ends of the barrel body respectively. A control method of the current feedback type numerical control electric screw driver comprises the steps that after the current feedback type numerical control electric screw driver is started, the controller carries out detection on the rotary angle and the torque, and preferably selects to carry out the screw meshing step or the rapid screwing step or the screw locking step or the standby step according to the torque, and meanwhile the controller has a fault detection function, and selects to enter the standby step or to maintain the standby step or to start the screw driver locking function when the screw loose fault state or the floating locking fault state exists. The current feedback type numerical control electric screw driver has various functions of automatic control, data management, monitoring mistake proofing and the like, is efficient, safe, convenient and high in quality, and can meet different processing requirements.
Description
Technical field
The utility model relates to a kind of screwdriver, especially a kind of Current feedback numerical control electric screwdriver.
Background technology
Screwdriver is the instrument for the turn of the screw, has obtained generally application in people's production and life.China is manufacturing powerhouse, and along with the development of the industries such as automobile, space flight, machinery, the automatic control level that improves screwdriver becomes development trend.When screwdriver is realized automation control, the Torque Control precision to screwdriver and intelligence require also improving constantly, and the control accuracy of product moment is higher, just can be applied to better in the middle of the assembling of various precision parts.
Current screwdriver on the market is mainly divided into three kinds, and the first is mechanical clutch structure, complex structure, precision is lower, maintenance cost is high, and the second is the structure with torque sensor, and precision is very high but expensive, the third employing be current type structure, precision is high, simple in structure, no material consumption, environmental protection, thus be used widely.In existing electric screw driver, the invention that application publication number is CN102794732A provides a kind of screwdriver, it has the drive unit that comprises motor, described motor lotus root is connected to driving shaft to drive the instrument that drives operation for completing screw with predetermined tightening torque, described chasing tool is useful on the current sensor that detects current of electric, there is the control device for accessory drive, control device is designed to brake when reaching Brake Standards, and calculate the threshold value of current of electric to determine switching standards and change to holding state based on predetermined tightening torque, this electric screw driver precision is higher, but do not possess monitoring error-disable function, function singleness, can not fully meet diversified processing needs, the aspects such as the speed control in the turn of the screw process simultaneously also need to improve to increase work efficiency better.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of Current feedback numerical control electric screwdriver, can realize the functions such as automatic control, data management and monitoring mistake proofing, precision is high, easy to use, safe and reliable, can adapt to different processing needs and increase work efficiency.
The technical solution of the utility model is: a kind of Current feedback numerical control electric screwdriver, comprise control cabinet and screwdriver, described control cabinet is connected by dismountable control cables with screwdriver, it is characterized in that: described control cabinet comprises casing, described casing is provided with power switch, external power interface, cable interface and display screen, in casing, be provided with controller and Switching Power Supply, controller comprises microprocessor, memory, motor drive module and display module, described microprocessor respectively with memory, motor drive module is connected with display module circuit, motor drive module is connected with cable interface circuit, display module is connected with display screen circuit, Switching Power Supply is connected with power switch and external power interface circuit respectively, described screwdriver comprises cylindrical shell, in cylindrical shell, be provided with connected motor, motor reduction gearbox and driving shaft, cylindrical shell two ends are respectively equipped with connector and criticize and chew, criticize to chew with driving shaft and be connected.
In described Switching Power Supply, be provided with filtration module.
In described motor, there is the position sensor of at least one detection rotor position.
Preferably, described position sensor is Hall element.
Described motor is non-carbon brush motor.
Described casing is provided with the signal output interface, PC communication interface and the usb data interface that are connected with controller circuitry.
Described cylindrical shell outside is provided with the axial compressive force mechanism that regulates each screw by axial guidance and spring.
Described controller and signal lamp connection, signal lamp is positioned at outside casing, for sending corresponding early warning signal in malfunctions such as sliding tooth or floating locks.
A kind of control method of Current feedback numerical control electric screwdriver, for driving by controller to criticize, chewed screw driving operation, it is characterized in that: desired value, higher limit and the lower limit that according to processing, need to set moment of torsion and corner, after starting, controller detects corner and moment of torsion respectively, and preferentially according to moment of torsion, selects to carry out following steps:
-screw interlock step, manually control or make to criticize to chew to press down aligning screw cap by being provided with the controller of start-up time, after starting, controller detects moment of torsion by motor current signal, position sensor detects motor position of rotation and provides corner current signal to controller, by controller, it reached current feed to motor and keep lower-speed state (as kept 100-300), until controller detects predetermined corner one;
-Quick fastening step, controller carry out current feed and make motor by low speed rotation at a high speed, until controller detects predetermined corner two, make again motor keep high speed rotating, until controller detects predetermined corner three, then controller carries out current feed and makes motor by high speed steering low speed, until controller detects predetermined corner four;
-screw locking step, controller carries out current feed and makes motor keep lower-speed state, until controller detects target torque and target rotation angle, now will send and tighten signal;
-standby step, manually controls or makes to criticize by controller and chew disengaging screw cap, and controller will still keep the current feed of specific degrees or stop current feed;
The numerical value of described predetermined corner one, two, three, four is all proportional with the numerical value of target rotation angle;
Described controller has the functions such as data record and inquiry, for parameters such as record and query time, corner, moment of torsion and speed;
When mechanical disorder, screw hole is bad, screw is bad and the factor such as workpiece specific materials can increase fault rate: wooden workpiece, plastics part, sheet metal are processed, or during screwed hole pine, easily cause screw slippage or idle running and form sliding dental phenomenon, when screwed hole is tight or screw is bad, easily causes not being locked into the end or tighten rear bad order and form floating lock status;
Described controller has fault detection capability, for detection of sliding tooth or two kinds of malfunctions of floating lock, sliding dental phenomenon refers to while arriving target rotation angle, controller does not detect that thereby target torque is without tightening signal (as by screw thread bad causing of distance) yet, floating lock status refers to and arrives target torque and produce while tightening signal, controller does not detect target rotation angle (as tightly caused resistance to strengthen by workpiece screw hole) yet, and controller can further have floating lock sensing function;
Sliding dental phenomenon all may be detected carrying out screw locking step or standby step, and above-mentioned four steps all may detect floating lock status, selection enters standby step, keeps standby step or starts screwdriver lock function, and exportable corresponding early warning signal, removing screwdriver lock-out state needs user on display screen, to input password.
The beneficial effects of the utility model are:
1, there is good man machine operation interface, realized the automation control of height, can be advantageously applied to the assembling field of auto parts and components, space flight assembly or precision optical machinery, by display screen, can preset the parameters such as moment of torsion, time, speed, corner, direction of rotation, support the mission mode of the demand of more than 6 kinds assembling, realize the speed control in rundown process, compared with prior art, significantly improved operating efficiency.
2, possesses programmable functions, can need to set corresponding program according to different processing, program memory function is realized by memory, possess data record, inquiry and export function simultaneously, can instant playback moment of torsion, the related data such as corner, by the analysis to rundown process data, can further optimize parameters to obtain best processing effect.
3, there is monitoring error-disable function, can accurately detect and record sliding tooth or two kinds of malfunctions of floating lock, and there is screwdriver lock function, safer reliable, also can outer signal lamp, and realize the multiple modes of warnings such as sound, color, word.
4, dispose non-carbon brush motor and Hall element, precision is high, non-maintaining, easy to use, be provided with the flexibility design such as axial compressive force mechanism, promote security, also possess outsidely start, tighten circulated, the function such as the password locking on the signal input/output function such as screwdriver fault and display screen, diverse in function, fully adapts to different processing needs.
Accompanying drawing explanation
Fig. 1 is the structural representation of control cabinet described in the utility model;
Fig. 2 is the structural representation of screwdriver described in the utility model;
Fig. 3 has represented the relation between the moment of torsion in different step, speed and corner in the utility model;
Fig. 4 has represented the relation between moment of torsion and corner under sliding dental phenomenon;
Fig. 5 has represented the relation between moment of torsion and corner under floating lock status.
In figure, 1-casing, 2-Switching Power Supply, 3-controller, 4-display screen, 5-cylindrical shell, 6-motor, 7-motor reduction gearbox, 8-driving shaft, 9-criticizes and chews, 10-connector.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:
A kind of Current feedback numerical control electric screwdriver, comprise control cabinet and screwdriver, control cabinet is connected by dismountable control cables with screwdriver, as shown in Figure 1, control cabinet comprises casing 1, casing 1 is provided with power switch, external power interface, cable interface and display screen 4, is provided with controller 3 and Switching Power Supply 2 in casing 1, the built-in filtration module of Switching Power Supply 2;
Signal output interface, PC communication interface and usb data interface circuit that controller 3 is also provided with casing 1 are respectively connected, and to realize data management function, the signal lamp connection outside controller 3 and casing 1, for realizing the warning function under malfunction;
As shown in Figure 2, screwdriver comprises cylindrical shell 5, in cylindrical shell 5, be provided with connected motor 6, motor reduction gearbox 7 and driving shaft 8, motor 6 is non-carbon brush motor 6, and in motor 6, be provided with the Hall element of 3 detection rotor positions, cylindrical shell 5 two ends are respectively equipped with connector 10 and batch chew 9, batch chew 9 to be connected with driving shaft 8.
During concrete enforcement, control method of the present utility model, be that by controller 3 drivings batch, chewing 9 completes screw driving operation, first according to processing, need to set desired value, higher limit and the lower limit of moment of torsion and corner, after starting, controller 3 detects corner and moment of torsion respectively, and preferentially according to moment of torsion, selects to carry out screw interlock, Quick fastening, screw locking or standby step:
As shown in Figure 3, in screw interlock step, controller 3 makes current feed to motor 6 it reach and keeps lower-speed state, until controller 3 detects predetermined corner one, in Quick fastening step, controller 3 carry out current feed and make motor 6 by low speed rotation at a high speed, until controller 3 detects predetermined corner two, make again motor 6 keep high speed rotating, until controller 3 detects predetermined corner three, then controller 3 carries out current feed and makes motor 6 by high speed steering low speed, until controller 3 detects predetermined corner four, in screw locking step, control is carried out current feed and is made motor 6 keep lower-speed state, until controller 3 detects target torque and target rotation angle, now will send and tighten signal and enter standby step.
During concrete enforcement, when mechanical disorder, screwed hole is bad, screw is bad and the factor such as workpiece specific materials can increase fault rate and cause sliding tooth or two kinds of malfunctions of floating lock:
As shown in Figure 4, sliding dental phenomenon refers to controller and when arriving target rotation angle, does not detect yet that thereby target torque is without tightening signal, with respect to calibration curve, different torque curves is corresponding to different sliding dental phenomenons, as can be formed not sliding dental phenomenon (1) (not reaching moment of torsion desired value) by thickness of workpiece, or by the bad sliding dental phenomenon (2) (not reaching moment of torsion desired value) that forms of screw thread distance, or can form sliding dental phenomenon (3) (not reaching lower torque limit value) by workpiece screw hole pine;
As shown in Figure 5, floating lock status refers to and arrives target torque and produce while tightening signal, controller 3 does not detect target rotation angle yet, with respect to calibration curve, different torque curves is corresponding to different floating lock statuss, as tightly can formed floating lock status (4) (not reaching corner desired value) by workpiece screw hole.
When controller 3 detects fault, can select to enter standby step, keep standby step or start screwdriver lock function, and export corresponding early warning signal, removing screwdriver lock-out state needs user to input password on display screen 4.
Therefore, the utlity model has the several functions such as automatic control, data management and monitoring mistake proofing, and efficient, safety, convenience, be that a kind of energy meets the different high-quality numerical control electric screwdrivers of processing needs.
Claims (8)
1. a Current feedback numerical control electric screwdriver, comprise control cabinet and screwdriver, described control cabinet is connected by dismountable control cables with screwdriver, it is characterized in that: described control cabinet comprises casing, described casing is provided with power switch, external power interface, cable interface and display screen, in casing, be provided with controller and Switching Power Supply, controller comprises microprocessor, memory, motor drive module and display module, described microprocessor respectively with memory, motor drive module is connected with display module circuit, motor drive module is connected with cable interface circuit, display module is connected with display screen circuit, Switching Power Supply is connected with power switch and external power interface circuit respectively, described screwdriver comprises cylindrical shell, in cylindrical shell, be provided with connected motor, motor reduction gearbox and driving shaft, cylindrical shell two ends are respectively equipped with connector and criticize and chew, criticize to chew with driving shaft and be connected.
2. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: in described Switching Power Supply, be provided with filtration module.
3. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: the position sensor in described motor with at least one detection rotor position.
4. Current feedback numerical control electric screwdriver according to claim 3, is characterized in that: described position sensor is Hall element.
5. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: described motor is non-carbon brush motor.
6. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: described casing is provided with the signal output interface, PC communication interface and the usb data interface that are connected with controller circuitry.
7. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: described cylindrical shell outside is provided with axial compressive force mechanism.
8. Current feedback numerical control electric screwdriver according to claim 1, is characterized in that: described controller and signal lamp connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538909.3U CN203542479U (en) | 2013-09-02 | 2013-09-02 | Current feedback type numerical control electric screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538909.3U CN203542479U (en) | 2013-09-02 | 2013-09-02 | Current feedback type numerical control electric screw driver |
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| Publication Number | Publication Date |
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| CN203542479U true CN203542479U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320538909.3U Expired - Fee Related CN203542479U (en) | 2013-09-02 | 2013-09-02 | Current feedback type numerical control electric screw driver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433882A (en) * | 2013-09-02 | 2013-12-11 | 东莞市聚川装配自动化技术有限公司 | Current feedback type numerical control electric screw driver and control method |
| CN107322517A (en) * | 2017-08-14 | 2017-11-07 | 宁波市易睐轲工具有限公司 | It is automatically stopped electric screw driver |
-
2013
- 2013-09-02 CN CN201320538909.3U patent/CN203542479U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433882A (en) * | 2013-09-02 | 2013-12-11 | 东莞市聚川装配自动化技术有限公司 | Current feedback type numerical control electric screw driver and control method |
| CN103433882B (en) * | 2013-09-02 | 2016-08-10 | 东莞市聚川装配自动化技术有限公司 | A kind of control method of current feedback type numerical control electric screw driver |
| CN107322517A (en) * | 2017-08-14 | 2017-11-07 | 宁波市易睐轲工具有限公司 | It is automatically stopped electric screw driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20190902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |