CN107470896A - Fastener external screw thread just matches somebody with somebody internal thread supervising device and monitoring method - Google Patents
Fastener external screw thread just matches somebody with somebody internal thread supervising device and monitoring method Download PDFInfo
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- CN107470896A CN107470896A CN201710791765.5A CN201710791765A CN107470896A CN 107470896 A CN107470896 A CN 107470896A CN 201710791765 A CN201710791765 A CN 201710791765A CN 107470896 A CN107470896 A CN 107470896A
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- fastener
- somebody
- internal thread
- rifle
- external screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines 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
- B23P19/04—Machines 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
- B23P19/06—Screw or nut setting or loosening machines
Abstract
Just just match somebody with somebody internal thread monitoring method with internal thread supervising device, threaded male fastener automatic tightening monitoring control device and threaded male fastener the invention provides a kind of fastener external screw thread, wherein fastener external screw thread just includes automatic acquisition unit with internal thread supervising device, judges configuration part, reversion number determination unit and control unit, and automatic acquisition unit obtains the rotating forward angle A and torque value of fastener assembling rifle automatically；Judge that configuration part judges whether torque value is less than moment of torsion threshold values, and it is just qualified with process for setting when being in judged result；Control unit controls fastener assembling rifle to be inverted with the angle more than A when the judged result for judging configuration part is no, fastener assembling rifle is exited internal thread；Reversion number determination unit judges whether reversion number is more than predetermined threshold, when result of determination for when being, control unit control fastener assembling rifle is no longer inverted, and terminates this assembling；When result of determination is no, control unit control fastener assembling rifle is inverted again.
Description
Technical field
The invention belongs to fastener automatic tightening process monitoring technology field, and in particular to a kind of fastener external screw thread is just matched somebody with somebody
Internal thread supervising device and monitoring method.
Background technology
Screw or bolt connection are one of common part connected modes, and application is very in Automatic manual transmission process
Extensively.At present industry have been realized in the assembling of the automation equipments such as screw or bolt substantially, and be equipped with corresponding hardware,
Software and control program.
The connection such as screw or bolt must just tighten." tightening " is a kind of more extensive general introduction in assembly technology, its
Purpose is to realize that parts realization more than two pieces or two pieces is brought into close contact, and can bear certain dynamic load, i.e., makes
Certain thrust must be obtained between assembly parts.This thrust (is axially drawn from the pretightning force of screw or bolt etc.
Stretch), and these power are all realized by " tighten ".
At present in industry frequently with quality evaluation method of tightening have：Moment of torsion direct control method；Moment of torsion control-corner monitoring
Method；Corner control-torque monitoring method；Yield point control methods；Bolt length method etc..But these methods are for screw tightening quality
Assess and control is more that end-state is tightened in concern, but ignore the monitoring of rundown process.
The now near technology of tightening generally comprises reversion and seeks that cap, screw thread are just matched somebody with somebody, screw thread is matched somebody with somebody entirely, opposite adaptation, preliminary pretension, most
Six control processes of fastening eventually, wherein, screw thread is just with the external screw thread that process is the critical process, only fastener in six processes
Just match somebody with somebody successfully with internal thread, can just be smoothed out subsequent handling.But it is easy to make because mechanism chucking position deviation during being somebody's turn to do
Into Disalignment between screw and internal thread be present, often in this course, because screw external screw thread and internal thread
Between interference, and cause internal thread and screw external screw thread to be damaged, ultimately cause screw tightening failure.It is but automatic at present
Tightening device can only the execution rotation of machinery formulate the requirement of angle, lack data feedback and necessary mistake in this single step process
Range monitoring.
The content of the invention
The improvement done primarily directed to original technology of the present invention, i.e., in actual process production process because screw center and interior
Thread center's line has a deviation, or internal and external threads just timing has an interference, but original technique initialization, simply simple Shi Hang Walk sequences,
And this process can further produce destruction to screw external screw thread and internal thread, so as to ultimately cause screw assembling failure.The present invention
Match somebody with somebody process mainly at the beginning of screw thread, i.e. fastener external screw thread and screw internal thread screw thread just timing is subject to real-time process monitoring, from
And avoid for the first time (preceding once) just match somebody with somebody after generation problem in the case where protect internal and external threads, realize internal and external threads again at the beginning of
The method matched somebody with somebody.In order to achieve the above object, present invention employs following technical scheme：
Fastener external screw thread provided by the invention is just used in screw or bolt automatic tightening mistake with internal thread supervising device
Cheng Zhong, to fastener external screw thread, just the process with internal thread is monitored, and has such technical characteristic：Obtained including automatic
Portion, judge configuration part, reversion number determination unit and control unit.Wherein, automatic acquisition unit obtains fastener assembling rifle automatically
Rotate forward angle A and torque value；Judge that configuration part judges whether torque value is less than moment of torsion threshold values, and set when judged result is and is
It is just qualified with process；Control unit controls fastener to assemble rifle with the angle more than A when the judged result for judging configuration part is no
Reversion, fastener assembling rifle is set to exit internal thread；Reversion number determination unit judges whether reversion number is more than predetermined threshold, when sentencing
Result is determined for when being, control unit control fastener assembling rifle is no longer inverted, and terminates this assembling；When result of determination is no
When, control unit control fastener assembling rifle is inverted again.
Preferably, match somebody with somebody in internal thread supervising device at the beginning of the fastener external screw thread provided by the invention, in addition to records of values
Storage part, the positive gyration and torque value of fastener assembling rifle are recorded in real time and is stored.
Preferably, match somebody with somebody in internal thread supervising device at the beginning of the fastener external screw thread provided by the invention, the determination of moment of torsion threshold values
Method is：Difference system is carried out to the torque value of a certain amount of non-defective unit part and discard using the Variant statistical analysis method of routine
Meter, identifies the moment of torsion lumped values of non-defective unit part and discard, and the median of two moment of torsion lumped values is set as into moment of torsion respectively
Threshold values.
Preferably, match somebody with somebody in internal thread supervising device at the beginning of the fastener external screw thread provided by the invention, it is 360 to rotate forward angle A
Any integer in~720, the threshold value for inverting number is n, determines depending on actual conditions, is advisable with 2~3.
Further, present invention also offers a kind of threaded male fastener automatic tightening to monitor control device, has such
Technical characteristic, there is input and display device, at least show the processing parameter setting picture of each process of automatic tightening process, and allow
Operating personnel input the setting value of each technological parameter；Fastener external screw thread as described above just matches somebody with somebody internal thread supervising device, right
Just the process with internal thread is monitored fastener external screw thread；Process control device is tightened, is assembled to tightening fastener in process
Rotation direction, rotational angle or the torque value of rifle are controlled in real time.
Further, just match somebody with somebody internal thread monitoring method present invention also offers a kind of threaded male fastener, have steps of：
The automatic rotating forward angle A and torque value for obtaining fastener assembling rifle；
Judge whether the torque value is less than moment of torsion threshold values, and it is just qualified with process for setting when being in judged result,
Judged result is controlled the fastener to assemble rifle and inverted with the angle more than A when being no, exit the fastener assembling rifle interior
Screw thread；
Judge whether the reversion number of the fastener assembling rifle is more than predetermined threshold, when result of determination is to be, control
The fastener assembling rifle is no longer inverted, and terminates this assembling；When result of determination for it is no be to control the fastener to assemble
Rifle is inverted again.
The effect of invention and effect
Just supervised according to fastener external screw thread provided by the invention with internal thread supervising device, threaded male fastener automatic tightening
Control device and monitoring method are controlled, is judged due to adding torque value in process is just matched somebody with somebody, reversion setting and reversion number are sentenced
Fixed, when judging that configuration part judges that torque value is not less than moment of torsion threshold values, control unit can control fastener to assemble rifle with more than just
The angle reversion of gyration, fastener assembling rifle is set to exit internal thread in time, while invert number determination unit to be to reversion number
It is no to be judged more than predetermined threshold, when result of determination is no, the chance that fastener assembling rifle inverts again is awarded, is being judged
As a result for when being, fastener assembling rifle is no longer inverted, and is terminated this assembling, is changed next threaded male fastener and enter luggage
Match somebody with somebody.Therefore, the problem of present invention can mitigate and avoid between screw external screw thread and screwed hole internal thread because of alignment degree deviation
The interference of internal and external threads caused by and, the situation of damage.So as to greatly improve the success rate that internal and external threads coordinate assembling, portion
Division technique process success rate brings up to 100% by 98%.Material scrap rate is reduced, while reduces unnecessary do over again into
This.
Brief description of the drawings
Fig. 1 is the structured flowchart of the threaded male fastener automatic tightening monitoring control device in the embodiment of the present invention；
Fig. 2 is the schematic diagram of the input and display device in the embodiment of the present invention；
Fig. 3 is the structured flowchart with internal thread supervising device at the beginning of the fastener external screw thread in the embodiment of the present invention；
Fig. 4 is the comparative result figure of the torque value Variant statistical of the non-defective unit part and discard in the embodiment of the present invention；
Fig. 5 is the monitoring of the threaded male fastener automatic tightening monitoring control device in the embodiment of the present invention and controlled
The flow chart of journey；
Fig. 6 is the monitoring process flow diagram flow chart with internal thread supervising device at the beginning of the fastener external screw thread in the embodiment of the present invention.
Embodiment
With reference to embodiment and accompanying drawing, the present invention will be described in detail.But the following example should not be regarded as to the present invention
The limitation of scope.
Fig. 1 is the structured flowchart of the threaded male fastener automatic tightening monitoring control device in the embodiment of the present invention.
As shown in figure 1, threaded male fastener automatic tightening monitoring control device 10 includes input and display device 11, fastener
External screw thread is just matched somebody with somebody internal thread supervising device 12, tightened outside process control device 13 and control input display device 11, fastener
Screw thread is just with internal thread supervising device 12 and the control device 14 for tightening the normal operation of process control device 13.
Fig. 2 is the schematic diagram of the input and display device in the embodiment of the present invention.
As shown in Fig. 2 input and display device 11 comprises at least process viewing area 111 and parameter shows setting regions
112.Process viewing area 111 shows whole processes of automatic tightening process, and carries out overstriking to current process and show.Fastener
Automatic tightening process includes six processes altogether, and respectively reversion seeks that cap, screw thread are just matched somebody with somebody, screw thread is matched somebody with somebody entirely, opposite adaptation, preliminary pre-
Tightly, finally six procedures of fastening, every procedure are required to fastener gun and carry out corresponding actions to realize.
Parameter shows that working procedure parameter and parameter display are shown in setting regions 112 sets frame, and its lower right corner is provided with
Determine button 113 and return to button 114, after treating whole parameter values settings, confirmed by the determination key.Return is pressed
Key is used to return to a unit.
Fig. 3 is the structured flowchart with internal thread supervising device at the beginning of the fastener external screw thread in the embodiment of the present invention.
As shown in figure 3, fastener external screw thread just includes automatic acquisition unit 121 with internal thread supervising device 12, judges setting
Portion 122, reversion number determination unit 123, data record storage part 124 and control unit 125.
Automatic acquisition unit 121 is used to match somebody with somebody at the beginning of fastener external screw thread automatic acquisition fastener assembling rifle in internal thread process
Rotate forward angle A and torque value.
Judge that configuration part 122 is used to whether judge less than moment of torsion threshold values torque value, and when judged result is to be
Setting is just qualified with process.
Control unit 125 controls fastener to assemble rifle with the angle more than A when the judged result for judging configuration part 122 is no
Reversion, fastener assembling rifle is set to exit internal thread；
Reversion number determination unit 123 judges whether reversion number is more than predetermined threshold, when result of determination is to be, control unit
125 control fastener assembling rifles are no longer inverted, and terminate this assembling, and fastener assembling rifle starts real with next fastener
Now just match somebody with somebody；When result of determination is no, control unit control fastener assembling rifle is inverted again.
Data record storage part 124 records the positive gyration and torque value of fastener assembling rifle and stored in real time, with
Facilitate subsequent analysis.
In the present embodiment, fastener assembling rifle be changed according to the fastener of practical set, when need assemble it is tight
When firmware is screw, fastener assembling rifle is screw gun, and when the fastener for needing to assemble is bolt, fastener assembling rifle is spiral shell
Bolt rifle.
The establishing method of moment of torsion threshold values in the present embodiment is as follows：Using the Variant statistical analysis method of routine to a certain amount of
Non-defective unit part and the torque value of discard carry out Variant statistical, identify the moment of torsion lumped values of non-defective unit part and discard respectively, and
The median of two moment of torsion lumped values is set as moment of torsion threshold values.As shown in figure 4, the torque value of non-defective unit part is smaller, discard
Torque value is many greatly compared with the torque value of non-defective unit part, is almost twice as.
The action that process control device 13 is used to control fastener gun in each process is tightened, it is tight corresponding to each operation
The action of firmware rifle is as shown in table 1：
The process title of table 1 and fastener assembling rifle action are corresponding
| Process title | Action |
| Cap is sought in reversion | Fixed angle is inverted according to the position of rifle and fastener |
| Screw thread is just matched somebody with somebody | Rotate forward A degree |
| Screw thread is matched somebody with somebody entirely | Just go to moment of torsion and reach B N.m |
| Opposite adaptation | Invert C degree |
| Preliminary pretension | Just go to moment of torsion and reach D N.m |
| Final fastening | Just go to moment of torsion and reach E N.m |
A~E value is set according to the type of fastener, and so that fastener is screw as an example, A is usually set to 360~
720°；B is usually set to 70%~80% target torque value；C is usually set to 150~250 °；D is usually set to 30%~
40% target torque value；E is target torque value.
Fig. 5 is the monitoring of the threaded male fastener automatic tightening monitoring control device in the embodiment of the present invention and controlled
The flow chart of journey, comprises the following steps：
Step S1, fastener assembling rifle reversion fixed angle seek cap, realize that fastener assembling rifle and the first of fastener are matched somebody with somebody；
Step S2, tighten process control device 13 and control fastener gun to rotate forward A degree, realize fastener external screw thread and internal thread
It is first match somebody with somebody, the process using fastener external screw thread just it is monitored with internal thread supervising device 12, only just with process conjunction
The fastener of lattice, subsequent handling could be entered and tightened, just given up with the underproof conduct discard of process.
Step S3, tighten process control device 13 and control fastener assembling rifle just going to moment of torsion and reach B N.m so that fastening
Part is tentatively completely into internal thread；
Step S4, tighten process control device 13 and control fastener assembling rifle reversion C degree so that in fastener opposite adaptation
Screw thread；
Step S5, tightens process control device 13 and controls fastener assembling rifle just going to moment of torsion and reach D N.m, realize fastening
The preliminary pretension of part and internal thread；
Step S6, tightens process control device 13 and controls fastener assembling rifle just going to moment of torsion and reach E N.m, realize fastening
Part and internal thread are finally tightened, and record the fastener anglec of rotation.
Fig. 6 is the monitoring process flow diagram flow chart with internal thread supervising device at the beginning of the fastener external screw thread in the embodiment of the present invention,
Comprise the following steps：
Step S2-1, automatic acquisition unit 121, which is matched somebody with somebody at the beginning of the fastener external screw thread, automatic in internal thread process obtains fastener dress
Rotating forward angle A and torque value with rifle, subsequently into step S2-2；
Step S2-2, judges whether configuration part 122 is judged less than moment of torsion threshold values torque value, when judged result is yes
When, into step S2-3；When judged result is no, into step S2-4；
Step S2-3, it is just qualified with process to judge that configuration part 122 is set, subsequent handling can be entered；
Step S2-4, control unit 125 control fastener assembling rifle to be inverted with the angle more than A, move back fastener assembling rifle
Go out internal thread, subsequently into step S2-5；
Step S2-5, reversion number determination unit 123 judge whether reversion number is more than predetermined threshold, when result of determination is yes
When, into step S2-6；When result of determination is no, into step S2-1；
Step S2-6, control unit 125 control fastener assembling rifle no longer to be inverted, and terminate this assembling, fastener dress
Start to realize with next fastener with rifle and just match somebody with somebody, while data record storage part 124 is recording fastener assembling rifle just in real time
Gyration and torque value are simultaneously stored, to facilitate subsequent analysis.
Mainly by taking screw automatic tightening process as an example, the general principle of the present invention is described for above-described embodiment, when
So, method of the invention is not limited to the cooperation between screw external screw thread and screw internal thread, is equally applicable to other internal and external threads
Assembling between pair coordinates, such as screw bolt and nut, but design parameter setting needs experimental data to support.
Step torque monitoring, threshold value setting and conditional jump proposed by the invention, redirect setting and can be used as associated class
Like the Technical Reference standard of technique, but according to the difference for tightening material, requirement, environment, it is also necessary to concrete analysis and solution.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of fastener external screw thread just matches somebody with somebody internal thread supervising device, during screw or bolt automatic tightening, to fastener
Just the process with internal thread is monitored external screw thread, it is characterised in that including：
Automatic acquisition unit, judge configuration part, reversion number determination unit and control unit,
Wherein, the automatic acquisition unit obtains the rotating forward angle A and torque value of fastener assembling rifle automatically,
It is described to judge that configuration part judges whether the torque value is less than moment of torsion threshold values, and be the first allotment of labor of setting when being in judged result
Sequence is qualified,
The control unit controls the fastener to assemble rifle with the angle more than A when the judged result for judging configuration part is no
Degree reversion, the fastener assembling rifle is set to exit internal thread,
The reversion number determination unit judges whether reversion number is more than predetermined threshold, when result of determination is to be, the control
Portion controls the fastener assembling rifle no longer to be inverted, and terminates this assembling；When result of determination is no, the control unit control
The fastener assembling rifle is made to be inverted again.
2. fastener external screw thread according to claim 1 just matches somebody with somebody internal thread supervising device, it is characterised in that also includes：
Records of values storage part, the positive gyration and torque value of the fastener assembling rifle are recorded in real time and is stored.
3. fastener external screw thread according to claim 1 just matches somebody with somebody internal thread supervising device, it is characterised in that：
Wherein, the determination method of the moment of torsion threshold values is：Using the Variant statistical analysis method of routine to a certain amount of non-defective unit part
Variant statistical is carried out with the torque value of discard, identifies the moment of torsion lumped values of the non-defective unit part and the discard respectively, and
The median of two moment of torsion lumped values is set as moment of torsion threshold values.
4. fastener external screw thread according to claim 1 just matches somebody with somebody internal thread supervising device, it is characterised in that：
Wherein, it is any integer in 360~720 to rotate forward angle A, and the threshold value for inverting number is 2 or 3.
5. a kind of threaded male fastener automatic tightening monitors control device, it is characterised in that has：
Input and display device, at least shows the processing parameter setting picture of each process of automatic tightening process, and allows operating personnel
Input the setting value of each technological parameter；
Process control device is tightened, rotation direction, rotational angle or the torque value that rifle is assembled to tightening fastener in process are carried out
Control in real time；
Fastener external screw thread just matches somebody with somebody internal thread supervising device, and to fastener external screw thread, just the process with internal thread is monitored, such as
Any one of Claims 1 to 4.
6. a kind of threaded male fastener just matches somebody with somebody internal thread monitoring method, it is characterised in that has steps of：
The automatic rotating forward angle A and torque value for obtaining fastener assembling rifle；
Judge whether the torque value is less than moment of torsion threshold values, and it is just qualified with process for setting when being in judged result, judging
Control the fastener to assemble rifle when being as a result no to invert with the angle more than A, the fastener assembling rifle is exited internal thread；
Judge whether the reversion number of the fastener assembling rifle is more than predetermined threshold, when result of determination is to be, described in control
Fastener assembling rifle is no longer inverted, and terminates this assembling；When result of determination is no, the fastener assembling rifle is controlled again
It is secondary to be inverted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791765.5A CN107470896B (en) | 2017-09-05 | 2017-09-05 | Fastener external screw thread just matches internal screw thread monitoring device and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791765.5A CN107470896B (en) | 2017-09-05 | 2017-09-05 | Fastener external screw thread just matches internal screw thread monitoring device and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107470896A true CN107470896A (en) | 2017-12-15 |
| CN107470896B CN107470896B (en) | 2019-04-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791765.5A Expired - Fee Related CN107470896B (en) | 2017-09-05 | 2017-09-05 | Fastener external screw thread just matches internal screw thread monitoring device and monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107470896B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112264789A (en) * | 2020-09-16 | 2021-01-26 | 大富科技(安徽)股份有限公司 | Rod penetrating method of adjustment-free machine and automatic rod penetrating machine |
| CN112692553A (en) * | 2020-12-17 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Control system for steel wire thread insert mounting technological parameters |
| CN113714789A (en) * | 2021-08-23 | 2021-11-30 | 深圳职业技术学院 | Thread tightening device based on visual positioning and control method |
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| CN112264789A (en) * | 2020-09-16 | 2021-01-26 | 大富科技(安徽)股份有限公司 | Rod penetrating method of adjustment-free machine and automatic rod penetrating machine |
| CN112692553A (en) * | 2020-12-17 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Control system for steel wire thread insert mounting technological parameters |
| CN113714789A (en) * | 2021-08-23 | 2021-11-30 | 深圳职业技术学院 | Thread tightening device based on visual positioning and control method |
| CN113714789B (en) * | 2021-08-23 | 2023-08-11 | 深圳职业技术学院 | Screw tightening device based on visual positioning and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107470896B (en) | 2019-04-12 |
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