CN108953321A - Threaded fastener assembly and threaded fastener arrive position detecting method and system - Google Patents
Threaded fastener assembly and threaded fastener arrive position detecting method and system Download PDFInfo
- Publication number
- CN108953321A CN108953321A CN201810490268.6A CN201810490268A CN108953321A CN 108953321 A CN108953321 A CN 108953321A CN 201810490268 A CN201810490268 A CN 201810490268A CN 108953321 A CN108953321 A CN 108953321A
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- threaded fastener
- salient point
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- threaded
- connection hole
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 17
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Position detecting method and system are arrived the present invention relates to a kind of threaded fastener, this method comprises the following steps: being screwed together using threaded fastener with the threaded connection hole docked to realize and be fastenedly connected two components；Before being screwed together, in a salient point is arranged on the inner wall of the threaded connection hole；During being screwed together, the threaded fastener is obtained from the salient point to the rotation angle value between setting torque；And be compared obtained rotation angle value with setting value, if the rotation angle value is less than the setting value, show that the threaded fastener fastening is not in place and carries out warning note.The present invention obtains threaded fastener in salient point to the angle passed through between setting torque, judge whether threaded fastener fastens in place according to the angle, it can find that threaded fastener fastens phenomenon not in place in time, and warning note is carried out in time, the step of eliminating manual inspection, cost of labor and cubing cost are saved, the degree of automation is improved.
Description
Technical field
The present invention relates to mechanical structure connecting detection field, a kind of threaded fastener assembly and threaded fastener are refered in particular in place
Detection method and system.
Background technique
Bolt is as common connector, commonly used to be fastenedly connected two components.As shown in Figure 1, the first components 11
It is fastenedly connected with the second components 12 by bolt 13, as shown in connection with fig. 2, is provided with threaded connection hole on the first components 11
111, it is provided with through-hole 121 on the second components 12, through-hole 121 is aligned with threaded connection hole 111, by bolt 13 from through-hole
It passes through at 121 and is screwed together with threaded connection hole 111, bushing 14 is also arranged at through-hole 121, bolt 13 passes through bushing 14
It is screwed together then at threaded connection hole 111.The process that screws togather of bolt 13 refers to shown in Fig. 3 and Fig. 4, the screw portion of bolt 13
It is matched with threaded connection hole 111, and screw rod has part to stretch out from threaded connection hole 111, in the example shown in Fig. 3 and Fig. 4,
The bolt 13 is shoulder bolt, and shoulder bolt is equipped with the part that diameter is greater than screw rod, this is partially disposed in bushing 14, bolt 13
After fastening in place, the bolt head of bolt 13 is attached to the outside of bushing.Judging whether bolt 13 fastens in place, is usually using and set
Bolt 13 is screwed onto setting torque and thinks that the bolt 13 has fastened in place by the mode for determining torque.As shown in connection with fig. 5, it is shown that
Bolt 13 screw togather during torque curve figure, it is rigid by bolt 13 and threaded connection hole 111 that the torque at the position A1, which is slightly variable,
Start to screw togather and generate, the torque at the position A2 is that bolt 13 is screwed onto generation at setting torque, which is shown as bolt
The variation of torque during fastening in place.
But when producing assembly, the threaded connection hole 111 of the first components 11 and leading to for the second components 12 can be generated
The case where hole 121 is co-axially align, as shown in Figure 6 and Figure 7, in threaded connection hole 111 and not coaxial through-hole 121, the bolt
13, which understand deviation during being screwed into, will form gap 15 between the bolt 13 and through-hole 121 even if having reached setting torque,
And the screw portion of bolt 13 with 111 non-pairs of threaded connection hole in screw togather, it is such assembly be really mistake, bolt 13 is in
Not state in place, but since torque has reached setting torque, so the phenomenon is not easy to be found when producing assembly.Such as Fig. 8
It is shown, it is shown that bolt do not screw togather under state in place during torque curve figure, wherein the torque at the position A1 is slightly variable is
It is screwed togather just by bolt 13 and threaded connection hole 111 and is generated, the torque at the position A3 is that bolt 13 is screwed onto setting torsion
It generates, cooperates shown in Fig. 5 at square, in 13 deviation of bolt, setting torque can be realized in advance, and bolt 13 at this time
Not in place in fastening, but according to setting torque come the method for fastening bolt the situation can not be found.Existing way is by people
Work is checked, will increase cost of labor and cubing cost in this way.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, provide a kind of threaded fastener to position detecting method and
System, solve it is existing by set torque method judge bolt whether fasten in place existing for can not find bolt deviation
The problem of phenomenon and manual inspection bring increase cost of labor and cubing cost.
Realizing the technical solution of above-mentioned purpose is:
Position detecting method is arrived the present invention provides a kind of threaded fastener, is included the following steps:
It is screwed together using threaded fastener with the threaded connection hole docked to realize and be fastenedly connected two components；
Before being screwed together, in a salient point is arranged on the inner wall of the threaded connection hole；
During being screwed together, the threaded fastener is obtained from the salient point to the rotation angle between setting torque
Value；And
Obtained rotation angle value is compared with setting value, if the rotation angle value is less than the setting value,
Then show that the threaded fastener fastening is not in place and carries out warning note.
A salient point is arranged in the inner wall of threaded connection hole in the present invention, can start to detect when threaded fastener touches the salient point
The angle change of bolt fastener, detection to threaded fastener is screwed onto setting torque, to obtain threaded fastener in salient point
To the angle passed through between setting torque, judges whether threaded fastener fastens in place according to the angle, can find in time
Threaded fastener the hole location of two components it is coaxial caused by fasten phenomenon not in place caused by deviation, finding
The step of carrying out warning note when fastening not in place in time, eliminating manual inspection saves cost of labor and cubing cost, mentions
High the degree of automation.
Threaded fastener of the present invention to position detecting method further improvement lies in that, in the inner wall of the threaded connection hole
One salient point of upper setting, comprising:
The inner wall section of the threaded connection hole is deformed to be formed from the inward-facing salient point for protruding out setting of inner wall.
Threaded fastener of the present invention to position detecting method further improvement lies in that, by the salient point be set to the screw thread
Far from the one end of the threaded fastener insertion side on connecting hole.
Threaded fastener of the present invention to position detecting method further improvement lies in that, by the threaded fastener with it is right
When the threaded connection hole connect is screwed together, carried out using electric tool rifle according to threaded fastener described in the setting torque drive
Screw togather operation；
During driving, the torque curve figure of the electric tool rifle is obtained；
When the threaded fastener touches the salient point, the first torque wave crest is formed in the torque curve figure；
When driving the threaded fastener to reach setting torque, the second torque ripple is formed in the torque curve figure
Peak；
It is counted by recording the electric tool rifle from the first torque wave crest to the revolution of the second torque wave crest
Calculation obtains the rotation angle value.
Threaded fastener of the present invention to position detecting method further improvement lies in that, the setting value is according to the screw thread
Fastener is being set from the salient point to the rotation angle between the setting torque under fastening in place state.
Position detecting system is arrived the present invention also provides a kind of threaded fastener, comprising:
Salient point on the inner wall of the threaded connection hole docked with threaded fastener；
Acquisition unit, for acquire the threaded fastener and the threaded connection hole screw togather during from the salient point to
Set the rotation angle value between torque；And
The judging unit being connect with the acquisition unit, for the big of the rotation angle value and the setting value
It is small, if the rotation angle value is less than the setting value, shows that the threaded fastener fastening is not in place and carries out alarm and mention
Show.
Threaded fastener of the present invention to position detecting system further improvement lies in that, the inner wall part of the threaded connection hole
Divide deformation to be formed from the inward-facing salient point for protruding out setting of inner wall.
Threaded fastener of the present invention to position detecting system further improvement lies in that, the salient point be set to the screw thread company
Connect the one end on hole far from the threaded fastener insertion side.
Threaded fastener of the present invention to position detecting system further improvement lies in that, further include and the acquisition unit connect
The electric tool rifle connect carries out screwing togather behaviour using the electric tool rifle according to threaded fastener described in the setting torque drive
Make；
The acquisition unit is during the electric tool rifle drives, for obtaining the torque of the electric tool rifle
Curve graph, and the revolution from the salient point to the electric tool rifle between the setting torque is recorded, and then institute is calculated
State rotation angle value.
Threaded fastener of the present invention to position detecting system further improvement lies in that, the setting value, which is stored in, described to be sentenced
In disconnected unit, and the setting value is turned round under fastening in place state from the salient point to the setting according to the threaded fastener
Rotation angle between square is set.
The present invention also provides a kind of threaded fastener assemblies, comprising:
Threaded fastener；And
The threaded connection hole docked with the threaded fastener passes through the threaded connection hole and the threaded fastener
It is screwed together to realize and be fastenedly connected two components, the inner wall of the threaded connection hole is equipped with salient point, is touched by the salient point
Whether in place to touch the threaded fastener can realize the detection threaded fastener to generate change in torque.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for being fastenedly connected two components using threaded fastener in the prior art.
Fig. 2 is the explosive decomposition structural schematic diagram of Fig. 1.
Fig. 3 to Fig. 4 is that the threaded fastener of structure shown in Fig. 1 screws togather the decomposition texture schematic diagram in fastener cycle.
Fig. 5 is that the threaded fastener of structure shown in Fig. 1 screws togather the torque curve figure in fastener cycle.
Fig. 6 is screw thread when the hole of threaded fastener two components in screwing togather fastener cycle of structure shown in Fig. 1 is not coaxial
Fastener is not secured to the structural schematic diagram of a state.
Fig. 7 is the partial enlargement diagram in Fig. 6 at threaded fastener.
Fig. 8 is that the threaded fastener of structure shown in Fig. 6 screws togather the torque curve figure in fastener cycle.
Fig. 9 is that the threaded fastener to position detecting method and system of threaded fastener of the present invention is fastenedly connected two components
Structural schematic diagram.
Figure 10 is the partial enlargement diagram in Fig. 9 at C1.
Figure 11 is the explosive decomposition structural schematic diagram such as 9.
Figure 12 is the front view in structure shown in Figure 11 at threaded connection hole.
Figure 13 to Figure 15 is that the threaded fastener of structure shown in Fig. 9 screws togather decomposition texture schematic diagram in fastener cycle.
Figure 16 is that the threaded fastener of structure shown in Fig. 9 screws togather the torque curve figure in fastener cycle.
Figure 17 is the threaded fastener of structure described in Fig. 9 in touching salient point to the structural schematic diagram for fastening state in place.
Figure 18 is the structural schematic diagram that threaded connection hole of the present invention is formed in the first components.
Figure 19 is the partial enlargement diagram in Figure 18 at C2.
Figure 20 is the fastening structure schematic diagram that two salient points are formed on threaded connection hole of the invention.
Figure 21 is the partial enlargement diagram in Figure 20 at C3.
Figure 22 is the structural schematic diagram that threaded fastener is saved in Figure 21.
Figure 23 is the front view of threaded connection hole in Figure 22.
Figure 24 is the cross-sectional view of structure shown in Figure 20.
Figure 25 is the structural schematic diagram that threaded connection hole of the present invention is formed in a nut.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to Fig. 9, position detecting method and system are arrived the present invention provides a kind of threaded fastener assembly and threaded fastener,
For solve it is existing using setting torque judge threaded fastener whether fasten in place existing for can not find threaded fastener
Deviation not in place the case where the problem of, be also used to solve the problems, such as manual inspection there are at high cost.The present invention being capable of automatic identification
Misloading risk finds the case where threaded fastener is not secured to, and timely warning note in time, improves automation journey
Degree, and reduce artificial point inspection, cost of labor is reduced, reduces tooling device investment, reduces equipment cost.Below with reference to attached
Figure is illustrated to threaded fastener of the present invention to position detecting method and system.
Refering to Fig. 9, it is shown that fastening to position detecting method and the threaded fastener of system for threaded fastener of the present invention connects
Connect the structural schematic diagram of two components.Below with reference to Fig. 9, to being illustrated to position detecting system for threaded fastener of the present invention.
As shown in figure 9, whether threaded fastener of the invention is tight for detecting threaded fastener 31 to position detecting system
It is affixed to position, the threaded fastener 31 with threaded connection hole 32 for being screwed together, to realize the first components 21 and the 2nd 0
Component 22 is fastenedly connected.In conjunction with shown in Figure 10 and Figure 11, through-hole 221 is offered on the second components 22, in Figure 10 and Figure 11
Shown in example, threaded connection hole 32 is provided on the first components 21, but detection system of the invention is not limited to spiral shell
Line connecting hole 32 is arranged on the first components 21, which is also used as individual part and is sticked first
The side of components 21.It is when being fastenedly connected the first components 21 and the second components 22, bushing 33 is nested to through-hole 221
On, enable threaded fastener 31 pass through out of bushing 33 and be screwed together with threaded connection hole 32.
In conjunction with shown in Figure 12, it is of the invention to position detecting system include salient point 321, acquisition unit and judging unit, salient point
321 are set on the inner wall of the threaded connection hole 32 docked with threaded fastener 31, and the top of the salient point 321 is placed in bolt connecting hole
In 21, so that threaded fastener 31 when screwing togather with threaded connection hole 32, can touch the salient point 321；Acquisition unit is for acquiring
Threaded fastener 31 and threaded connection hole 32 screw togather during from salient point 321 to setting torque between rotation angle value, specifically
Ground, as shown in figure 13, the screw portion of threaded fastener 31 are threaded into threaded connection hole 32, with the spiral shell in threaded connection hole 32
Line is screwed and screw rod is screwed into bolt connecting hole 32；As shown in figure 14, the end face touching of threaded fastener 31
When salient point 321, since the blocking meeting of salient point 321 is so that threaded fastener 31 screws togather process and generates certain variation, according to the change
Change knowable threaded fastener 31 to reach at salient point 321, from start recording from the salient point 321 or turn of detection threaded fastener 31
Dynamic angle；As shown in figure 15, it until the record or detection rotational angle to threaded fastener 31 are fastened to setting torque, namely twists
Threaded fastener 31 to setting torque, acquisition unit of the invention has got threaded fastener 31 and has turned round from salient point 321 to setting
Generated angle change when square, namely from salient point 321 to the rotation angle value between setting torque；Judging unit and acquisition are single
Member connection, the judging unit are used to compare selected angle to the size with setting value, if rotation angle value is less than setting value, table
The bright threaded fastener 31 fastens not in place and then carries out warning note.
As shown in figure 16, it is shown that threaded fastener screws togather the torque curve figure in fastener cycle, wherein at the position F1
Change in torque is that state shown in Figure 13 generates, i.e., it is micro- to produce torque when threaded fastener 31 is screwed with threaded connection hole 32
Become；Change in torque at the position F2 is that state shown in Figure 14 generates, i.e., threaded fastener 31 is in contact with salient point 321 and is generated
Change in torque；Change in torque at the position F3 is that state shown in Figure 15 generates, i.e., threaded fastener 31 is screwed onto setting torque
When produce change in torque.In the torque curve figure, it is seen that the rotation angle of threaded fastener 31 at the position Chu ZhiF3 of the position F2
Degree is X °.Preferably, being previously stored with setting value in judging unit, which is fastening in place according to threaded fastener 31
It is set from salient point 231 to the rotation angle between setting torque under state.Specifically, for the fastening journey of threaded fastener 31
Degree would generally limit the amount of protruding into of threaded fastener 31, and can calculate satisfaction according to the diameter of the amount of protruding into and threaded fastener 31 should
Rotation angle needed for the amount of protruding into can be stored in judging unit using the rotation angle as setting value.Or it can also pass through
The mode of experiment obtains threaded fastener 31, and in fastening, salient point 321, and should to the rotation angle of setting torque under state in place
Rotation angle is stored in judging unit as setting value.
As a better embodiment of the invention, as shown in Figure 12, Figure 18 and Figure 19, the inner wall part of threaded connection hole 32
Divide deformation to be formed from the inward-facing salient point 321 for protruding out setting of inner wall.Preferably, the salient point 321 can be by threaded connection hole 32
Barrel outside wall surface inwardly concave and formed, so that corresponding in outside wall surface form recess 322.Shown in Figure 18 and Figure 19
Example in, threaded connection hole 32 is formed on the first components 21, on first components 21 take out hole formed be threadedly coupled
Hole 32.In the example shown in Figure 18 and Figure 19, salient point 321 is provided at one.
In another better embodiment, as shown in Figure 20 to Figure 24, salient point 321 is provided at two, and salient point 321 at two
At the same section of threaded connection hole 32, two salient points 321 are concaved by the outside wall surface of the barrel of threaded connection hole 32
Enter to be formed, so that corresponding in outside wall surface form recess 322, preferably, two salient points 321 are oppositely arranged.This certain hair
Two or more can be set in the bright quantity for being not intended to limit the setting of salient point 321, the salient point 321, but should be noted that salient point 321 can hinder spiral shell
Line connector 31 is screwed into operation, should be avoided and excessive salient point 321 is arranged and affect threaded connector 31 is screwed into operation.
In another better embodiment, as shown in figure 25, threaded connection hole 32 is formed on a nut 23, and the one zero
The hole passed through for threaded fastener 31 is opened up on component 21, salient point 321 of the invention is set on the inner wall of the nut 23, is led to
It crosses nut 23 and threaded fastener 31 screws togather and is fastenedly connected the first components 21 and the second components 22.Preferably, the nut 23
It is fixedly welded on the first components 21.
Preferably, as shown in figure 17, salient point 321 of the invention is set on threaded connection hole 32 and inserts far from bolt fastener 31
Enter the one end of side.Also salient point 321 is located at the outer end side of threaded connection hole 32.It is touched in the end face of threaded fastener 31
After the salient point 321, which just stretches out out of threaded connection hole 32.Certainly the setting position of salient point 321 of the invention not with
This is limited, and may be provided at any position of 32 inner wall of threaded connection hole.
When at 31 spiral shell of threaded fastener to setting torque, the threaded fastener 31 of dotted line expression shown in as Figure 17
Position, the end face of threaded fastener 31 is at 321 position of salient point and set spacing at torque as D, and realization known thread is tight
The amount of protruding into of firmware 31 can calculate required salient point after the position of setting salient point 321 determines according to the amount of protruding into
Space D at position disposition setting same level, can calculate screw threads for fastening according to the diameter of the space D and threaded fastener 31
Part 31 rotates angle as setting value.It is, of course, also possible to detecting threaded fastener 31 in salient point 321 between setting torque
After rotation angle value, which is converted into distance values at bump location disposition setting same level, and then between comparison
Size away from value with space D indicates that threaded fastener 31 is not secured to position, and then alarm when distance values are less than space D
Prompt.
As another better embodiment of the invention, of the invention further includes connecting with acquisition unit to position detecting system
Electric tool rifle, using electric tool rifle according to setting torque drive threaded fastener 31 carry out screwing togather operation；Acquisition unit
During the driving of electric tool rifle, for obtaining the torque curve figure of electric tool rifle, and record from salient point 321 to setting
The revolution of electric tool rifle between torque, and then rotation angle value is calculated.In conjunction with shown in Figure 16, which is
The tool of stubborn bolt, output shaft can be matched with the end of threaded fastener 31, and threaded fastener 31 is driven to turn together
Dynamic, when threaded fastener 31 encounters salient point 321, the obstruction meeting of salient point 321 is so that electric tool rifle meets obstructions and forms one
Torque wave crest, i.e., the first torque wave crest at the position F2, when electric tool rifle reaches setting torque, the spiral shell of threaded fastener 31
Bolt head and bushing offset and form another torque wave crest, i.e., the second torque wave crest at the position F3, acquisition unit of the invention exists
Counting is opened up at first torque wave crest, until the second torque wave crest terminates to count, obtains the first torque wave crest to the second torque ripple
Correspondingly the first torque wave crest can be obtained in the revolution of electric tool rifle between peak, the revolution of the revolution namely threaded fastener 31
Rotation angle value to the second torque wave crest.
Preferably, acquisition unit of the invention can be the inductor being installed on electric tool rifle, it to be used for real-time induced electricity
The torque of power driven tools rifle simultaneously forms torque curve figure.
As better embodiment another again of the invention, judging unit, can be by judging unit and one when being alarmed
Alarm is connected, and judging unit forms a triggering command when being alarmed, and makes alarm by the triggering command
It alarms, voice guard, photoelectric alarm may be selected in alarm, it is also an option that vibration alarm.
Threaded fastener 31 of the invention structure shown in the figure is shoulder bolt, is not limited thereto certainly, the spiral shell
Line fastener 31 can be any model, any kind of bolt, should be understood the structure comprising any threaded form
Part.
Threaded fastener of the present invention has the beneficial effect that position detecting system
Structure is simple, identifies whether angle assembles in place come automatic identification threaded fastener by electric tool rifle, improves
The degree of automation；
Structure versatility is high, and the structure of any threaded connection is applicable；
When threaded connection hole to be formed on components, it can save nut-welding in the operation of components, reduce
Number of parts mitigates construction weight；
High degree of automation eliminates artificial point inspection, reduces cost of labor and tooling input cost.
Being illustrated to position detecting method to threaded fastener provided by the invention below.
Threaded fastener of the present invention arrives position detecting method, includes the following steps:
As shown in Fig. 9 to Figure 12, it is screwed together using threaded fastener 31 with the threaded connection hole 32 docked to realize tightly
It is solidly connected two components 21,22；
Before being screwed together, in a salient point 321 is arranged on the inner wall of threaded connection hole 32；
During being screwed together, threaded fastener 31 is obtained from salient point 321 to the rotation angle value between setting torque；
And
Obtained rotation angle value is compared with setting value, if rotation angle value is less than setting value, shows spiral shell
The fastening of line fastener is not in place and carries out warning note.
A salient point is arranged in the inner wall of threaded connection hole in the present invention, can start to detect when threaded fastener touches the salient point
The angle change of bolt fastener, detection to threaded fastener is screwed onto setting torque, to obtain threaded fastener in salient point
To the angle passed through between setting torque, judges whether threaded fastener fastens in place according to the angle, can find in time
Threaded fastener the hole location of two components it is coaxial caused by fasten phenomenon not in place caused by deviation, finding
The step of carrying out warning note when fastening not in place in time, eliminating manual inspection saves cost of labor and cubing cost, mentions
High the degree of automation.
As a better embodiment of the invention, in a salient point is arranged on the inner wall of threaded connection hole, comprising:
As shown in figure 12, the inner wall section of threaded connection hole 32 is deformed and protrudes out the convex of setting to be formed from inner wall is inward-facing
Point 321.
Preferably, the salient point 321 can be inwardly concaved by the barrel outside wall surface of threaded connection hole 32 and be formed, thus in outer wall
It is corresponding on face to form recess 322.In the example shown in Figure 18 and Figure 19, threaded connection hole 32 is formed in the first components
On 21, hole is taken out on first components 21 and forms threaded connection hole 32.In the example shown in Figure 18 and Figure 19, salient point 321
At one.
In another better embodiment, as shown in Figure 20 to Figure 24, salient point 321 is provided at two, and salient point 321 at two
At the same section of threaded connection hole 32, two salient points 321 are concaved by the outside wall surface of the barrel of threaded connection hole 32
Enter to be formed, so that corresponding in outside wall surface form recess 322, preferably, two salient points 321 are oppositely arranged.This certain hair
Two or more can be set in the bright quantity for being not intended to limit the setting of salient point 321, the salient point 321, but should be noted that salient point 321 can hinder spiral shell
Line connector 31 is screwed into operation, should be avoided and excessive salient point 321 is arranged and affect threaded connector 31 is screwed into operation.
Threaded connection hole 32 of the invention can be formed on the first components 21, on the first Components 21 production take out hole with
Form threaded connection hole 32.But the present invention is not limited to be arranged threaded connection hole 32 on the first components 21, which connects
Hole 32 is connect to be also used as individual part and be sticked and be fixed on the side of the first components 21.As shown in figure 25, it is threadedly coupled
Hole 32 is formed on a nut 23, and the hole passed through for threaded fastener 31 has been opened up on the first components 21, and of the invention is convex
Point 321 is set on the inner wall of the nut 23, is screwed togather by nut 23 and threaded fastener 31 and is fastenedly connected the first components 21
With the second components 22.Preferably, the nut 23 is fixedly welded on the first components 21.
As another better embodiment of the invention, as shown in Figure 13 and Figure 14, salient point 321 is set to threaded connection hole
Far from the one end of 31 insertion side of threaded fastener on 32.Certainly the setting position of salient point 321 of the invention is not limited thereto,
At its any position that may be provided at 32 inner wall of threaded connection hole.
As another better embodiment of the invention, threaded fastener 31 is being screwed togather with the threaded connection hole 32 docked
When connection, carry out screwing togather operation according to setting torque drive threaded fastener using electric tool rifle；
As shown in figure 16, during driving, the torque curve figure of electric tool rifle is obtained；
In conjunction with shown in Figure 14 and Figure 15, when threaded fastener 31 touches salient point, first is formed in torque curve figure and is turned round
Square wave crest, the torque value at the position F2；
When driving threaded fastener 31 to reach setting torque, the second torque wave crest is formed in torque curve figure, F3
Set the torque value at place；
Rotation angle is calculated from the first torque wave crest to the revolution of the second torque wave crest by recording electric tool rifle
Angle value.
The electric tool rifle is the tool for twisting bolt, and output shaft can be matched with the end of threaded fastener 31, and
Threaded fastener 31 is driven to rotate together, when threaded fastener 31 encounters salient point 321, the obstruction meeting of salient point 321 is so that electronic
Instrument firearm meets obstructions and forms a torque wave crest, i.e., the first torque wave crest at the position F2 reaches setting in electric tool rifle
When torque, the bolt head and bushing of threaded fastener 31 offset and form another torque wave crest, i.e. the second torque at the position F3
Wave crest, the present invention open up counting at the first torque wave crest, until the second torque wave crest terminates to count, obtain the first torque wave crest
To the revolution of electric tool rifle between the second torque wave crest, the revolution of the revolution namely threaded fastener 31 correspondingly be can be obtained
First torque wave crest is to the rotation angle value between the second torque wave crest.
As another better embodiment of the invention, setting value according to threaded fastener 31 under fastening in place state from
Salient point 321 is set to the rotation angle between setting torque.It specifically, would generally for the tightness of threaded fastener 31
The amount of protruding into for limiting threaded fastener 31, can calculate according to the diameter of the amount of protruding into and threaded fastener 31 and meet the amount of the protruding into institute
The rotation angle needed, can be using the rotation angle as setting value.Or threaded fastener can also be obtained by way of experiment
31 fastening in place under state salient point 321 to setting torque rotation angle, and using the rotation angle as setting value.
Threaded fastener assembly provided by the invention is illustrated below.
The present invention also provides a kind of threaded fastener assemblies, can be by two zero for being fastenedly connected two components
Part is fastenedly connected, and whether in place the threaded fastener assembly also has the function of detection threaded fastener can be achieved.Of the invention
Threaded fastener assembly includes a kind of above-mentioned threaded fastener to the threaded fastener 31 and spiral shell in position detecting system and method
Line connecting hole 32, in conjunction with shown in Figure 11, threaded fastener 31 has external screw thread, threaded connection hole 32 and 31 phase of threaded fastener
Adaptation, and can be screwed together, it is connected through a screw thread hole 32 and being screwed together for threaded fastener 31 is fastenedly connected two 0 with realization
Component, threaded connection hole 32 therein can be formed on a components, can also be an independent part, be attached at a components or
It is fixedly arranged on a components.In conjunction with shown in Figure 12, it is equipped with salient point 321 on the inner wall of threaded connection hole 32, passes through the salient point 321
Whether in place touching threaded fastener 31 can realize detection threaded fastener 31 to generate change in torque.
Specifically, when threaded fastener 31 touches salient point 321, torque changes, and starts to detect bolt fastener
Angle change, detection is screwed onto setting torque to threaded fastener, to obtain threaded fastener in salient point to setting torque
Between the angle passed through, judge whether threaded fastener fastens in place according to the angle, can find threaded fastener in time
The hole location of two components it is coaxial caused by fasten phenomenon not in place caused by deviation.
The specific structure of threaded fastener 31 and threaded connection hole 32 in threaded fastener assembly of the invention and mutually
Cooperation detection fastening in place whether principle and above-mentioned threaded fastener to the threaded fastener in position detecting system and method
31 is identical with 32 specific structure of threaded connection hole and the principle to cooperate whether detecting fastening in place, and for details, reference can be made to above-mentioned
Description, details are not described herein.The present invention has been described in detail with reference to the accompanying drawings, ordinary skill people in this field
Member can make many variations example to the present invention according to the above description.Thus, certain details in embodiment should not be constituted to this hair
Bright restriction, the present invention will be using the ranges that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of threaded fastener arrives position detecting method, which comprises the steps of:
It is screwed together using threaded fastener with the threaded connection hole docked to realize and be fastenedly connected two components；
Before being screwed together, in a salient point is arranged on the inner wall of the threaded connection hole；
During being screwed together, the threaded fastener is obtained from the salient point to the rotation angle value between setting torque；
And
Obtained rotation angle value is compared with setting value, if the rotation angle value is less than the setting value, table
The bright threaded fastener fastening is not in place and carries out warning note.
2. threaded fastener as described in claim 1 arrives position detecting method, which is characterized in that in the threaded connection hole
One salient point is set on inner wall, comprising:
The inner wall section of the threaded connection hole is deformed to be formed from the inward-facing salient point for protruding out setting of inner wall.
3. threaded fastener as claimed in claim 1 or 2 arrives position detecting method, which is characterized in that the salient point to be set to
Far from the one end of the threaded fastener insertion side on the threaded connection hole.
4. threaded fastener as described in claim 1 arrives position detecting method, which is characterized in that by the threaded fastener
When being screwed together with the threaded connection hole docked, using electric tool rifle according to threaded fastener described in the setting torque drive
It carries out screwing togather operation；
During driving, the torque curve figure of the electric tool rifle is obtained；
When the threaded fastener touches the salient point, the first torque wave crest is formed in the torque curve figure；
When driving the threaded fastener to reach setting torque, the second torque wave crest is formed in the torque curve figure；
It is calculated by recording the electric tool rifle from the first torque wave crest to the revolution of the second torque wave crest
To the rotation angle value.
5. threaded fastener as described in claim 1 arrives position detecting method, which is characterized in that the setting value is according to described in
Threaded fastener is being set from the salient point to the rotation angle between the setting torque under fastening in place state.
6. a kind of threaded fastener arrives position detecting system characterized by comprising
Salient point on the inner wall of the threaded connection hole docked with threaded fastener；
Acquisition unit, for acquiring during the threaded fastener and the threaded connection hole screw togather from the salient point to setting
Rotation angle value between torque；And
The judging unit being connect with the acquisition unit, for the size of the rotation angle value and the setting value, if
The rotation angle value is less than the setting value, then shows that the threaded fastener fastening is not in place and carries out warning note.
7. threaded fastener as claimed in claim 6 arrive position detecting system, which is characterized in that the threaded connection hole it is interior
Wall part deformation is to form from the inward-facing salient point for protruding out setting of inner wall.
8. threaded fastener as claimed in claims 6 or 7 arrives position detecting system, which is characterized in that the salient point is set to institute
State the one end on threaded connection hole far from the threaded fastener insertion side.
9. threaded fastener as claimed in claim 6 arrives position detecting system, which is characterized in that further include single with the acquisition
The electric tool rifle of member connection carries out spiral shell according to threaded fastener described in the setting torque drive using the electric tool rifle
Closing operation；
The acquisition unit is during the electric tool rifle drives, for obtaining the torque curve of the electric tool rifle
Figure, and the revolution from the salient point to the electric tool rifle between the setting torque is recorded, and then the rotation is calculated
Corner angle value.
10. a kind of threaded fastener assembly characterized by comprising
Threaded fastener；And
The threaded connection hole docked with the threaded fastener passes through screwing togather for the threaded connection hole and the threaded fastener
Connection is fastenedly connected two components to realize, the inner wall of the threaded connection hole is equipped with salient point, touches institute by the salient point
Whether in place to state threaded fastener can realize the detection threaded fastener to generate change in torque.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490268.6A CN108953321B (en) | 2018-05-21 | 2018-05-21 | Threaded fastening assembly and in-place detection method and system of threaded fastening piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490268.6A CN108953321B (en) | 2018-05-21 | 2018-05-21 | Threaded fastening assembly and in-place detection method and system of threaded fastening piece |
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| CN108953321A true CN108953321A (en) | 2018-12-07 |
| CN108953321B CN108953321B (en) | 2020-05-01 |
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| CN113495302A (en) * | 2020-04-03 | 2021-10-12 | 欣旺达电动汽车电池有限公司 | Method for detecting foreign matter on screw connection surface and screw fastening device |
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| CN103963873A (en) * | 2013-02-04 | 2014-08-06 | 现代自动车株式会社 | Fastening device and control method of the same |
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| CN108953321B (en) | 2020-05-01 |
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Address after: 201315 No. 669, kang'an Road, Kangqiao Industrial Zone, Pudong New Area, Shanghai Patentee after: Yanfeng international Seat System Co., Ltd Address before: 200122 No. 669, kang'an Road, Kangqiao Industrial Zone, Pudong New Area, Shanghai Patentee before: Yanfeng andotuo seat Co., Ltd |
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