CN105458686B - A kind of error prevention device and its error-preventing method - Google Patents

A kind of error prevention device and its error-preventing method Download PDF

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Publication number
CN105458686B
CN105458686B CN201610078672.3A CN201610078672A CN105458686B CN 105458686 B CN105458686 B CN 105458686B CN 201610078672 A CN201610078672 A CN 201610078672A CN 105458686 B CN105458686 B CN 105458686B
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controller
fastening
screw
error
assembled
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CN105458686A (en
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季珊珊
刘以建
陆观
徐文帝
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Shanghai Maritime University
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Shanghai Maritime University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06Screw or nut setting or loosening machines

Abstract

The invention discloses a kind of error prevention device, screw is assembled into position to be assembled for fastening means, the error prevention device includes:One recognition unit for identifying fastening means positional information;One controller, it is connected respectively with the fastening means and recognition unit;Mistake proofing information, target location order of the described mistake proofing packet containing fastening means are stored in described controller;Controller judges whether it meets target location order according to fastening means positional information, and prompt message is exported if not meeting.The invention also discloses a kind of error-preventing method.The present invention can prevent caused mistake in the assembling of streamline screw, avoid due to line workers memory inertia and repeat the assembled in sequence brought error, the assembly qualified rate that large-scale high leakproofness requires device is drastically increased, it is in the long run upper to save great amount of cost for enterprise.

Description

A kind of error prevention device and its error-preventing method
Technical field
The present invention relates to workpiece mounting technology field, and in particular to a kind of error prevention device and its error-preventing method.
Background technology
Error prevention device occurs since nineteen sixties, is Japanese enterprises and administrative staff to zero-fault thought Materialization, it can effectively prevent various mistakes, prevent the generation of defect.
In Automatic manual transmission, it can often encounter the parts connected with multiple screws (or screw), now be called screw group Connection.Such as the cylinder block and head of internal combustion engine, in the top cover or manhole and hand hole, and industrial equipment and pipeline of canister Flange connection largely used etc..Twisting for its screw group is also specify in the instruction for mounting or servicing manual of many plant equipment Tight order.When carrying out tightening assembling to screw group, it is recognized that principle be symmetrically to be fastened by middle both sides.This tightening method has Two purposes:One is make each screw uniform stressed;The second is making connected piece preferably be bonded, ensure the sealing of cylinder cap Property.
On the streamline of general member screw assembling of the prior art, enterprise can select the machine assembling of full-automation Either manual operation fastening means assembling.However, assembled for the quantity of full automatic its tightening axle of tightening device by it Screw number depending on, disperse that irregular, number is more for some complex, screws and have the device of strict assemble sequence requirement Part assembles, such as automobile engine, and because the former is very high to instrument positioning accuracy request, control setting is complicated, and once produces wrong It is not easy to detect by mistake, most Enterprise Integrateds consider machine cost and assembling flexibility, generally select latter approach and enter luggage Match somebody with somebody.Therefore, how to prevent in the production of screw assembling line because line workers memory and repeats what is brought at inertia Assembled in sequence is slipped up, it appears particularly important.
The content of the invention
It is an object of the invention to provide a kind of error prevention device and its error-preventing method, can prevent in the assembling of streamline screw Caused mistake, avoid due to line workers memory inertia and repeat the assembled in sequence brought error, greatly Ground improves the assembly qualified rate that large-scale high leakproofness requires device, in the long run upper to save great amount of cost for enterprise.
In order to achieve the above object, the present invention is achieved through the following technical solutions:A kind of error prevention device, for fastening means Screw is assembled to position to be assembled, is characterized in, the error prevention device includes:
One recognition unit for identifying fastening means positional information;
One controller, it is connected respectively with the fastening means and recognition unit;Wherein
Mistake proofing information is stored in described controller, described target location of the mistake proofing packet containing fastening means is suitable Sequence;
Controller judges whether it meets target location order according to fastening means positional information, exports and carries if not meeting Show information.
Described recognition unit includes several sensors, and several sensors correspond to the coordination to be installed of each screw Put, several sensors are numbered respectively according to the assembling rule of screw, the number order of several sensors and fastening The target location order of device is corresponding.
Described error prevention device also includes a Tip element, and described Tip element is connected with controller, for according to control The control output prompt message of device processed.
Described mistake proofing information also includes the object run standard of fastening means, and the controller is used for according to object run Standard judges whether the screw of the position has been completed to assemble.
Described fastening means is tightening tool, and the object run standard is predetermined torque, when the operation of tightening tool When reaching predetermined torque, controller sends the signal being stopped to tightening tool.
Described error prevention device also includes an alarm, and described alarm is connected with controller, for according to controller Control will be prompted to information output be alarm signal.
Described error prevention device also includes several indicator lamps, and described indicator lamp is correspondingly arranged with sensor, and respectively It is connected with controller, the position to be assembled in unfinished confined state is indicated for the control according to controller.
Described error prevention device also includes an interconnecting device, and described each sensor is connected to interconnecting device by a cable, The interconnecting device is connected by a bus with the controller.
A kind of error-preventing method, the screw on streamline is assembled to position to be assembled for fastening means, using anti-misloading Realization is put, the error prevention device includes:One recognition unit for identifying fastening means positional information;One controller, respectively with institute State fastening means and recognition unit connection;Mistake proofing information is stored in described controller, described mistake proofing packet is containing fastening The target location order of device;It is characterized in, the error-preventing method comprises the steps of:
Controller judges whether it meets target location order according to fastening means positional information, exports and carries if not meeting Show information.
Described recognition unit includes several sensors, and several sensors correspond to the coordination to be installed of each screw Put, several sensors are numbered respectively according to the assembling rule of screw, the number order of several sensors and fastening The target location order of device is corresponding.
A kind of error prevention device of the present invention and its error-preventing method have advantages below compared with prior art:Add for different Work device, in each position install sensor for needing to be fastened, realize 1 pair of 1 sequential control;Operated because the present apparatus is shown Sequentially, it is not necessary to which operating personnel have too many special knowledge and abundant technical ability, reduce staff training input and the operation expended The personnel costs such as man-hour;When order of occurrence mistake, device is prompted, and operator can repair according to prompting to mistake Just, to eliminate underproof reason and potential underproof reason, underproof generation, the assembly qualified rate of operator are prevented It is improved;Modularized design, it is easy to change, different components assembling processing can be realized according to user's request, than full-automatic dress It is lower with equipment cost, embody the mentality of designing of " simplifying administration and practicing economy, control cost ";By being set to object run standard It is fixed so that the moment of torsion of each screw is at optimum state, improves product yield.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of error prevention device of the present invention;
Fig. 2 is sensor distribution schematic diagram;
Fig. 3 is a kind of one embodiment design sketch of error-preventing method of the present invention;
Fig. 4 is a kind of another embodiment design sketch of error-preventing method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferable specific embodiment in detail, the present invention is further elaborated.
As shown in figure 1, a kind of error prevention device, is assembled to position to be assembled, the error prevention device for fastening means by screw Comprising:One recognition unit for identifying fastening means positional information;One controller 101, respectively with the fastening means and knowledge Other unit connection;Wherein, mistake proofing information is stored in described controller 101, described mistake proofing packet is containing fastening means Target location order;Controller 101 judges whether it meets target location order according to fastening means positional information, if not meeting Then export prompt message.
In the present embodiment, described recognition unit includes several sensors 102, and several sensors 102 correspond to The position to be assembled of each screw, several sensors 102 are numbered respectively according to the assembling rule of screw, several biographies The number order of sensor 102 is corresponding with the target location order of fastening means;Different assembly wares corresponds to different assembling rule Then, there is defined in the instruction for mounting or servicing manual of many plant equipment, assembling rule, i.e., each spiral shell can be determined accordingly The assemble sequence of nail.
In the other embodiment of the present invention, as shown in figure 1, described error prevention device also includes an interconnecting device 103, Described each sensor 102 is connected to interconnecting device 103 by a cable, and the interconnecting device 103 passes through a bus and the control Device 101 processed connects.
In the present embodiment, error prevention device also includes a Tip element, and described Tip element is connected with controller, is used for Prompt message is exported according to the control of controller;In the preferred embodiment of the present invention, Tip element is an alarm;Another In some outer embodiments, error prevention device also includes several indicator lamps, and described indicator lamp is correspondingly arranged with sensor, and respectively It is connected with controller, the position to be assembled in unfinished confined state is indicated for the control according to controller;Example Such as, when not assembled also in position to be assembled, indicator lamp is changed into green Chang Liang(In other embodiment, it can also show Show green flicker), operator can assemble to the position according to prompting, assemble and complete rear indicator light extinguishing, if assembling is wrong By mistake, it indicates that lamp is changed into red, and operator is prompted with alarm.
In the present embodiment, described mistake proofing information also includes the object run standard of fastening means, and the controller is used Whether complete to assemble in the screw for judging the position according to object run standard;In a preferred embodiment of the invention, it is described Fastening means be tightening tool, the object run standard is predetermined torque, when the operation of tightening tool reaches predetermined torque When, controller sends the signal being stopped to tightening tool;More specifically, tightening tool is aerodynamic moment spanner, it is pneumatic to turn round Square wrench has torque sensor, and torque value is constantly delivered in controller, and when reaching predetermined torque, controller is to tightening Instrument sends the signal being stopped.
With reference to above-mentioned error prevention device, the invention also discloses a kind of error-preventing method, comprise the steps of:
Controller judges whether it meets target location order according to fastening means positional information, exports and carries if not meeting Show information.
Concrete application:Controller uses Siemens LOGO in the present invention!PLC, certain other have the PLC of identical function equal Can be as the controller of the present apparatus.Sensor uses IC approach switches, and present invention is mainly applied to the spiral shell on streamline Bind and match somebody with somebody, because the barral of a gun of fastening means is made of metal, have selected at present in departments such as modern light industry, electric power, military project, scientific researches Lathe and industrial production automation line on wide variety of ideal position sensor --- IC approach switches as master Want detector.Proximity switch is made up of oscillator and shaping amplifier, produces an alternation after starting of oscillation on the inductive head of switch Magnetic field, work as metallic object(The barral of a gun of fastening means)During close to induction zone, vortex is generated in metallic object, is shaken so as to absorb The energy swung, oscillation amplitude is set to weaken so that the purpose that failure of oscillation makes proximity switch reach reversion.Due to proximity switch is contactless, No pressure, no-spark, promptly send detection signal, to drive relay or gate, are particularly suitable for fastener connection Industrial production line.Secondly, proximity switch has the characteristics of high sensitivity, frequency response is fast, can accurately detect fastener Whether a certain fixture location hole for determining sequence number inserts fastening means and carries out part fastening during connection, and accurately and in time Return one, which is worth, to be judged and is handled to controller, and shows it by designing LED cue circuits around proximity switch Break-make so that whole assembling process is more directly perceived, and worker's misarrangement is more simple, more hommization.In view of large-scale precision device On the one hand screw restraint location can utilize restraint location region division, realize that position is close using more playscript with stage directions products than comparatively dense Collect the fastening in region;On the other hand the higher sensor of precision is found.In terms of each part connection, due to consideration that different user The demand of processing device is different, while the number of fixture needed for assembly is different, using interconnecting device, places in order above The male of aviation plug, is connected to connect with sensor, and ground versatile and flexible meets the assembling demand of user, simplifies use The operation difficulty at family, enhance the universality and versatility of product.
In the present invention, in order to preferably determine the position of each sensor, sensor as shown in Figure 2 can be used to position Component, i.e., comprising a box body, it is made up of two pieces of tempering transparent glass panels, each sensor 201 is arranged in box body, wherein, box The two sides of body offer hole respectively, and the position in hole is that the screw position to be assembled of the assembly ware assembled as needed determines , in Fig. 2, according to being actually needed for user's request and production line, it is determined that the position in 14 holes is 14 station holes, in addition According to the position in hole come placement sensor 201 and corresponding indicator lamp and SR, it is preferred that indicator lamp is with SR Integrated component is the indicator lamp 202 with SR, while one jiao in box body sets Tip element 203, according to the dress of screw Each sensor is numbered with rule, 1 ~ No. 14 sensor 201 is that they tighten order, this target with fastening means Sequence of positions be it is consistent, fastening means must according to 1 ~ 14 put in order successively to screw complete tighten.
As shown in Figures 3 and 4, describe respectively under different operating modes, the application method of the present apparatus.
The present apparatus is arranged on the front of pile line operation worker's station, is vertically fixed on the operator side of streamline. When assembly ware is sent to immediately ahead of the tempering transparent glass panel of the fixed present apparatus by streamline dolly, and cause screw assembling Each station station hole corresponding with the present apparatus made in advance align, start the work of the present apparatus.
(1)Order prompting is with reporting an error, as shown in Figure 3:First, the present apparatus be marked with No. 1 position lamp it is bright(Referred to as 1 signal lamp, Under it is similar), operator picks up the i.e. hand-held fastening gun of fastening means, puts screw well, is screwed to screw pair by the hole position at No. 1 The station answered, when controller detects setting torque, fastening gun is automatically stopped work, and operator takes out fastening gun, and now 1 Signal lamp goes out, and corresponding two signal lamp is bright, and worker carries out the work of second station, by that analogy.When proceeding to the 5th station, Because No. 5 holes and No. 6 holes are closer to the distance, it is assumed that operator does not see specific bright light position, and fastening gun is inserted into In 6th station hole, now, buzzer warning prompting mistake, 5 signal lamps are still bright, and operator carries out position correction, tightens 5th screw.Now, 6 signal lamps are bright, and operator continues to be operated according to the bright dark degree of indicator lamp.
(2)Reset monitors in real time with moment of torsion, as shown in Figure 4:It is false when worker carries out fastening work to the 9th station hole If starting machine production line because failure has a power failure suddenly, after restoring electricity again, due to the power failure memory function of controller, 9 signal lamps It is bright.If now, operator has been completed the operation of No. 9 stations, before 10 signal lamps do not light, No. 10 works are carried out rashly The operation of position, program will certainly report an error.Now, it is necessary to which operator is manually pressed by 10 signal lamps according to work on the spot situation Reset switch(The side of each lamp can have digital mark), now, 9 signal lamps are gone out automatically, and 10 signal lamps are bright, and operator is carried out The fastening work of No. 10 stations.When screw is screwed to setting torque, and operator continues to press fastening gun switch, due to control Device processed detects setting torque, and fastening gun is automatically stopped work, ensures screw torque in optimum state.It can prevent from operating with this Worker twists the misdeed of screw and improves operating efficiency with feeling
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (4)

1. a kind of error prevention device, screw is assembled to position to be assembled for fastening means, it is characterised in that the error prevention device bag Contain:
One recognition unit for identifying fastening means positional information;Described recognition unit includes several sensors, some Individual sensor corresponds to the position to be assembled of each screw, and several sensors are compiled respectively according to the assembling rule of screw Number, the number order of several sensors is corresponding with the target location order of fastening means;
One controller, it is connected respectively with the fastening means and recognition unit;Wherein
Mistake proofing information, target location order of the described mistake proofing packet containing fastening means are stored in described controller;
Controller judges whether it meets target location order according to fastening means positional information, the output prompting letter if not meeting Breath;
One alarm, described alarm are connected with controller, for will be prompted to information output according to controlling for controller as report Alert signal;
One interconnecting device, described each sensor are connected to interconnecting device by a cable, and the interconnecting device passes through a bus and institute State controller connection;
Described mistake proofing information also includes the object run standard of fastening means, and the controller is used for according to object run standard Judge whether the screw of the position has been completed to assemble;Described fastening means is tightening tool, and the object run standard is pre- If moment of torsion, when the operation of tightening tool reaches predetermined torque, controller sends the signal being stopped to tightening tool;Its In, the tightening tool is aerodynamic moment spanner, and aerodynamic moment spanner has torque sensor, by torque value real-time delivery to control In device processed, when reaching predetermined torque, controller sends the signal being stopped to tightening tool.
2. error prevention device as claimed in claim 1, it is characterised in that further comprising a Tip element, described prompting list Member is connected with controller, for exporting prompt message according to the control of controller.
3. error prevention device as claimed in claim 1, it is characterised in that further comprising several indicator lamps, described instruction Lamp is correspondingly arranged with sensor, and is connected respectively with controller, for the control according to controller in unfinished assembling shape The position to be assembled of state is indicated.
4. a kind of error-preventing method, the screw on streamline is assembled to position to be assembled for fastening means, using error prevention device Realize, the error prevention device includes:One recognition unit for identifying fastening means positional information;One controller, respectively with it is described Fastening means and recognition unit connection;Mistake proofing information is stored in described controller, described mistake proofing packet contains fastener The target location order of part;Characterized in that, the error-preventing method comprises the steps of:
Controller judges whether it meets target location order according to fastening means positional information, the output prompting letter if not meeting Breath;
Wherein, described recognition unit includes several sensors, and several sensors correspond to the coordination to be installed of each screw Put, several sensors are numbered respectively according to the assembling rule of screw, the number order of several sensors and fastening The target location order of device is corresponding;The alarm that the error prevention device includes is connected with controller, for according to controller It is alarm signal to control and will be prompted to information output;Described each sensor is connected to interconnecting device, the switching by a cable Box is connected by a bus with the controller;
Described mistake proofing information also includes the object run standard of fastening means, and the controller is used for according to object run standard Judge whether the screw of the position has been completed to assemble;Described fastening means is tightening tool, and the object run standard is pre- If moment of torsion, when the operation of tightening tool reaches predetermined torque, controller sends the signal being stopped to tightening tool;Its In, the tightening tool is aerodynamic moment spanner, and aerodynamic moment spanner has torque sensor, by torque value real-time delivery to control In device processed, when reaching predetermined torque, controller sends the signal being stopped to tightening tool.
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