CN110631446A - A relocation mechanism for screw thread leads to ends and detects - Google Patents
A relocation mechanism for screw thread leads to ends and detects Download PDFInfo
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- CN110631446A CN110631446A CN201911041147.4A CN201911041147A CN110631446A CN 110631446 A CN110631446 A CN 110631446A CN 201911041147 A CN201911041147 A CN 201911041147A CN 110631446 A CN110631446 A CN 110631446A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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Abstract
A float mechanism for thread make-and-break detection, comprising: the driving coupling is fixed with the connecting shaft sleeve and the floating shaft in a clearance mode and can be used for eliminating parallel shaft deviation, the rubber ring is arranged to facilitate the elimination of the inclined deviation of the shaft, the plane bearing is arranged to ensure that no translational friction force is realized on the basis of eliminating the parallel shaft deviation, and the design of the spring in the cavity formed by the surrounding of the connecting shaft sleeve and the driving coupling enables the inclined structure to reset. The floating mechanism designed by the invention has a simple structure, can simultaneously eliminate parallel offset and inclined offset of the shaft, ensures the concentricity of the axial lead of the thread and the axial lead of the go-no go gauge, and improves the thread detection effect.
Description
Technical Field
The invention relates to the technical field of floating equipment for thread detection, in particular to a floating mechanism for thread on-off detection.
Background
At present, in machines, internal threads and external threads (namely, threading teeth) need to be formed on corresponding parts through threaded connection, and due to the fact that the threads of the parts or products are related to fastening reliability and even related to safety of the parts or products in use, more and more companies require to check the threads of the parts or products. At present, the detection heads of a plurality of thread detection machines only use the clearance between a shaft and a shaft sleeve to allow the angular direction to float through a spring, and part of the detection heads of the inlet and the thread detection machines use a mode similar to a plane bearing to allow the plane to float, but the cost is very high; the existing thread detection machine can generate two-aspect offset during detection, the first thread go-no-go gauge axis and the thread axis to be detected can generate parallel offset, and the second thread go-no-go gauge axis and the thread axis to be detected can generate non-parallel inclination angle offset; the thread leading-stopping detection equipment in the prior art often can cause product slippage, the thread leading-stopping gauge is stuck, the problems of false alarm detection and the like are solved, and the technical problems of low detection stability and reliability and the like are solved.
Disclosure of Invention
The invention provides a floating mechanism for detecting the on and off of threads, which solves one or more technical problems through improvement on related structures.
A float mechanism for thread make-and-break detection, comprising: the driving shaft is in threaded connection with the end face of the connecting shaft sleeve, the end face of the lower cover plate is in threaded connection with the lower end face of the connecting shaft sleeve, the floating shaft penetrates through the lower cover plate, the lower end of the floating shaft enables the conversion sleeve to be connected with the lower cover plate through a clamping assembly, The floating shaft is clamped and fixed.
Preferably, the floating mechanism for detecting the through and stop of the threads is in clearance connection with the upper hexagonal flange, the lower hexagonal flange and the hexagonal hole, the radius of the inscribed circle of the hexagonal hole is larger than the radius of the inscribed circle of the upper hexagonal flange and the lower hexagonal flange, and the radius of the inscribed circle of the hexagonal hole is smaller than the radius of the circumscribed circle of the upper hexagonal flange and the lower hexagonal flange.
Preferably, in the floating mechanism for detecting the thread passing and stopping, a first plane bearing is sleeved outside a hexagonal hole at the upper end of the floating shaft, and a lower ball surface in the first plane bearing is in contact with an upper plate surface of a circular ring plate at the upper end of the floating shaft.
Preferably, in the floating mechanism for detecting the thread passing and stopping, the floating shaft is further sleeved and connected with a second plane bearing, and an upper ball surface of the second plane bearing is in contact with a lower plate surface of an annular plate at the upper end of the floating shaft.
The floating mechanism for thread make-and-break detection according to any one of claims 3 or 4, wherein: the first rubber ring retaining block is sleeved outside the driving coupling, a first rubber ring is arranged in a groove of the first rubber ring retaining block, the upper surface of the first rubber ring is in elastic contact with the lower end surface of the inner side of the connecting shaft sleeve, and the upper rolling surface of the first plane bearing is abutted against the first rubber ring retaining block.
Preferably, the floating mechanism for detecting the through and stop of the thread further comprises a second rubber ring and a second rubber ring holding block, the first rubber ring holding block is sleeved outside the floating shaft, a second rubber ring is arranged in a groove of the second rubber ring holding block, the lower end face of the second rubber ring is in contact with the upper plate face of the lower cover plate, and the lower rolling surface of the second planar bearing is abutted against the second rubber ring holding block.
Preferably, the floating mechanism for detecting the through and stop of the threads further comprises a V-shaped sealing ring sleeved at the lower end of the floating shaft, the upper end face of the V-shaped sealing ring elastically abuts against the lower plate face of the lower cover plate, and the lower end face of the V-shaped sealing ring elastically abuts against the upper end face of the boss extending out of the floating shaft.
Preferably, the floating mechanism for detecting the thread passing and stopping is characterized in that a vertically extending arc plate of an integrated structure is arranged at the lower end of a floating shaft body in the floating shaft, and the vertically extending arc plate is inserted into the clamping assembly and the passing and stopping gauge conversion sleeve to complete the relative fixation of the floating shaft and the passing and stopping gauge conversion sleeve.
Preferably, the floating mechanism for detecting the thread passing and stopping comprises a clamping assembly and a bolt, wherein the clamping assembly comprises two C-shaped clamping arc plates and the bolt, threaded through holes are respectively processed in the C-shaped clamping arc plates, the inner side and the outer side of each vertical extending arc plate are respectively attached to the outer peripheral surface of the passing and stopping gauge conversion sleeve and the inner side and the peripheral surface of the C-shaped clamping arc plate, and the bolt penetrates through the threaded through holes on the same side of the two C-shaped clamping arc plates to complete clamping.
Preferably, in the floating mechanism for detecting the thread passing and stopping, springs arranged at equal angles in the circumferential direction are arranged in a cavity surrounded by the connecting shaft sleeve and the driving shaft coupling, the upper end of each spring abuts against the surface of the driving shaft coupling, and the lower end of each spring abuts against the upper surface inside the connecting shaft sleeve.
Description of the drawings:
the embodiments are further described with reference to the accompanying drawings, in which:
FIG. 1 is a front view of the overall structure of a floating mechanism for detecting the opening and closing of a screw thread according to the present invention;
FIG. 2 is a cross-sectional view of a float mechanism for thread make-and-break detection in accordance with the present invention;
the specific structure corresponding to the number is as follows:
the device comprises a driving shaft 1, a driving coupling 2, an upper hexagonal flange 21, a lower hexagonal flange 22, a connecting shaft sleeve 3, a floating shaft 4, a vertically extending arc plate 41, a go-no go gauge 5, a go-no go gauge conversion sleeve 6, a lower cover plate 7, a clamping assembly 8, a C-shaped clamping arc plate 81, a bolt 82, a first plane bearing 91, a second plane bearing 92, a first rubber ring 101, a second rubber ring 102, a first rubber ring holding block 111, a second rubber ring holding block 112 and a spring 12,
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
Specific embodiment example 1:
a float mechanism for thread make-and-break detection, comprising: the driving shaft 1, the driving coupling 2, the connecting shaft sleeve 3, the floating shaft 4, the go-no go gauge 5, the go-no go gauge conversion sleeve 6 and the lower cover plate 7, wherein the go-no go gauge 5 is fixed in the go-no go gauge conversion sleeve 6, the two ends of the driving coupling 2 are respectively provided with an upper hexagonal flange 21 and a lower hexagonal flange 22 which are of an integrated structure, the upper end of the connecting shaft sleeve 3 and the upper end of the floating shaft 4 are both provided with hexagonal holes, the driving coupling 2 is sleeved in the connecting shaft sleeve 3 and fixed in the hexagonal holes through the upper hexagonal flange 21 to complete the fixed connection of the driving coupling 2 and the connecting shaft sleeve 3, the lower end of the driving coupling 2 is fixed in the hexagonal holes through the lower hexagonal flange to complete the fixed connection of the driving coupling 2 and the floating shaft 4, the driving shaft 1 is in end face screwed connection with the connecting shaft sleeve 3, the end face of the lower cover plate 7 is screwed on the lower, the lower end part of the floating shaft 4 clamps and fixes the conversion sleeve 6 and the floating shaft 4 through a clamping assembly 8.
The driving coupling 2 is more critical in function, plays a role in connecting the driving shaft 1 and the floating shaft 4 and continuously transmits torque acting force of the driving shaft 1, and the driving coupling 2 is matched with the connecting shaft sleeve 3 and the floating shaft 4 through the upper hexagonal flange, the lower hexagonal flange and the hexagonal hole to complete fixed connection relation; the floating mechanism is simple in structure, low in cost and convenient to overhaul and operate.
Furthermore, the upper hexagonal flange 21, the lower hexagonal flange 22 and the hexagonal hole are connected in a clearance manner, the radius of the inscribed circle of the hexagonal hole is larger than the radius of the inscribed circle of the upper hexagonal flange 21 and the lower hexagonal flange 22, and the radius of the inscribed circle of the hexagonal hole is smaller than the radius of the circumscribed circle of the upper hexagonal flange 21 and the lower hexagonal flange 22.
When parallel offset appears in screw thread logical no-go gage axis and the screw thread axis of waiting to detect, through the clearance translation between 4 accessible hexagonal flanges 22 of floating axle and the hexagonal hole, translation to concentric shaft position department, drive shaft 1 drives drive coupling 2 and rotates, goes up hexagonal flange 21, down the hexagonal flange 22 and rotates flange apex angle play and to lean on the hexagonal hole inner wall after certain angle, and drive coupling 2 can be with the subsequent torque of drive shaft 1 and continue the transmission. The structure is convenient for eliminating the parallel offset between the two axes.
Furthermore, a first plane bearing 91 is sleeved outside a hexagonal hole at the upper end of the floating shaft 4, and a lower ball surface in the first plane bearing 91 is in contact with an upper plate surface of an annular plate at the upper end of the floating shaft. The floating shaft 4 is also sleeved and connected with a second plane bearing 92, and the upper ball surface of the second plane bearing 92 is contacted with the lower plate surface of the circular ring plate.
The arrangement of the first plane bearing 91 and the second plane bearing 92 can ensure that the floating shaft 4 has no translational friction in the translational centering process, on one hand, the translational centering is easy to realize, and on the other hand, the service life of the related structure is prolonged.
The drive coupling further comprises a first rubber ring 101 and a first rubber ring holding block 111, wherein the first rubber ring holding block 111 is sleeved outside the drive coupling 2, a first rubber ring 101 is arranged in a groove of the first rubber ring holding block 111, the upper plate surface of the first rubber ring 101 is in elastic contact with the inner lower end surface of the connecting shaft sleeve 3, the upper rolling surface of the first plane bearing 91 is abutted against the first rubber ring holding block 111, the drive coupling further comprises a second rubber ring 102 and a second rubber ring holding block 112, the first rubber ring holding block 112 is sleeved outside the floating shaft 4, a second rubber ring 102 is arranged in a groove of the second rubber ring holding block 112, the lower end surface of the second rubber ring 102 is in contact with the upper plate surface of the lower cover plate 7, and the lower rolling surface of the second plane bearing 92 is abutted against the second rubber ring holding block 112.
The elastic action of the first rubber ring 101 and the second rubber ring 102 can reset the inclination angle within the elastic allowable range of the rubber rings (one side of the rubber rings is compressed and shortened, and the other side of the rubber rings is retracted and pulled and extended), and the elastic recovery action of the rubber rings can meet the inclination angle deviation within a certain range.
Further, the floating shaft device further comprises a V-shaped sealing ring 13 sleeved at the lower end of the floating shaft 4, the upper end face of the V-shaped sealing ring 13 elastically abuts against the lower plate face of the lower cover plate 7, and the lower end face of the V-shaped sealing ring 13 elastically abuts against the upper end face of the boss extending out of the floating shaft 4.
The V-shaped sealing ring 13 is arranged to further prevent the lower cover plate 7 and the floating shaft 4 from rotating relatively.
Furthermore, a vertically extending arc plate 41 of an integrated structure is arranged at the lower end of the floating shaft body in the floating shaft 4, and the vertically extending arc plate 41 is inserted into the clamping assembly 8 and the go-no go gauge conversion sleeve 6 to complete the relative fixation of the floating shaft 4 and the go-no go gauge conversion sleeve 6.
Further, clamping unit 8 includes that two C shapes are embraced and press from both sides arc board 81, bolt 82, and the C shape is embraced and is pressed from both sides arc board 81 and processed threaded through-hole respectively, the inside and outside both sides of vertical extension arc board 41 respectively with go to no-go gage conversion cover 6 outer peripheral face, the inboard global subsides of clamp arc board 81 are embraced to the C shape tightly, and bolt 82 passes two C shapes respectively and embraces clamp arc board 81 homonymy threaded through-hole and accomplish to press from both sides tightly.
Furthermore, the connecting shaft sleeve 3 and the driving shaft coupling 2 enclose a cavity in which springs 12 which are arranged at equal angles in the circumferential direction are arranged, the upper end of each spring 12 abuts against the plate surface of the driving shaft coupling 2, and the lower end of each spring 12 abuts against the upper plate surface in the connecting shaft sleeve 3.
When the floating mechanism is tilted to eliminate the shaft tilt angle deviation, the structures in the floating mechanism are returned under the action of the rebound force of the spring 12.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A float mechanism for thread make-and-break detection, comprising: the drive shaft, drive shaft coupling, connecting sleeve, floating shaft, logical no-go gage conversion cover, lower apron, logical no-go gage is fixed in logical no-go gage conversion cover, its characterized in that: the driving coupling is characterized in that an upper hexagonal flange and a lower hexagonal flange which are of an integral structure are respectively arranged at two end parts of the driving coupling, hexagonal holes are respectively arranged at the upper end of the connecting shaft sleeve and the upper end of the floating shaft, the driving coupling is sleeved inside the connecting shaft sleeve and is fixed in the hexagonal holes through the upper hexagonal flange to complete the fixed connection of the driving coupling and the connecting shaft sleeve, the lower end of the driving coupling is fixed in the hexagonal holes through the lower hexagonal flange to complete the fixed connection of the driving coupling and the floating shaft, the driving shaft is fixedly connected with the end face of the connecting shaft sleeve, the end face of the lower cover plate is fixedly screwed on the lower end face of the connecting shaft sleeve, the floating shaft penetrates through the lower cover plate, and the lower end part of the floating shaft.
2. The float mechanism for thread make and break detection as recited in claim 1, wherein: the hexagonal hole internal circle radius is greater than the radius of the upper hexagonal flange and the lower hexagonal flange internal circle, and the radius of the hexagonal hole internal circle is less than the radius of the upper hexagonal flange and the lower hexagonal flange external circle.
3. The float mechanism for thread make and break detection as recited in claim 1, wherein: the outer side of the hexagonal hole in the upper end of the floating shaft is sleeved with a first plane bearing, and a lower ball surface in the first plane bearing is in contact with an upper plate surface of the circular plate in the upper end of the floating shaft.
4. The float mechanism for thread make and break detection as recited in claim 1, wherein: the floating shaft is also sleeved and connected with a second plane bearing, and the upper ball surface of the second plane bearing is contacted with the lower plate surface of the circular ring plate at the upper end of the floating shaft.
5. The floating mechanism for thread make-and-break detection according to any one of claims 3 or 4, wherein: the first rubber ring retaining block is sleeved outside the driving coupling, a first rubber ring is arranged in a groove of the first rubber ring retaining block, the upper surface of the first rubber ring is in elastic contact with the lower end surface of the inner side of the connecting shaft sleeve, and the upper rolling surface of the first plane bearing is abutted against the first rubber ring retaining block.
6. The floating mechanism for thread make-and-break detection according to any one of claims 3 or 4, wherein: the floating shaft bearing further comprises a second rubber ring and a second rubber ring holding block, the first rubber ring holding block is sleeved outside the floating shaft, a second rubber ring is arranged in a groove of the second rubber ring holding block, the lower end face of the second rubber ring is in contact with the upper plate face of the lower cover plate, and the lower rolling surface of the second planar bearing is abutted to the second rubber ring holding block.
7. The float mechanism for thread make and break detection as recited in claim 1, wherein: the floating shaft is characterized by further comprising a V-shaped sealing ring sleeved at the lower end of the floating shaft, the upper end face of the V-shaped sealing ring elastically abuts against the lower plate face of the lower cover plate, and the lower end face of the V-shaped sealing ring elastically abuts against the upper end face of the boss extending out of the floating shaft.
8. The float mechanism for thread make and break detection as recited in claim 1, wherein: the lower end of the floating shaft body in the floating shaft is provided with a vertical extension arc plate of an integrated structure, and the vertical extension arc plate is inserted into the clamping assembly and the go-no go gauge conversion sleeve to complete the relative fixation of the floating shaft and the go-no go gauge conversion sleeve.
9. The float mechanism for thread make and break detection as recited in claim 1, wherein: the clamping assembly comprises two C-shaped clamping arc plates and a bolt, threaded through holes are respectively machined in the C-shaped clamping arc plates, the inner side and the outer side of the vertical extending arc plate are respectively tightly attached to the outer peripheral surface of the go-no go gauge conversion sleeve and the inner side of each C-shaped clamping arc plate, and the bolt penetrates through the threaded through holes on the same side of the two C-shaped clamping arc plates to complete clamping.
10. The floating mechanism for thread make-and-break detection according to any one of claims 3 or 4, wherein: the cavity enclosed by the connecting shaft sleeve and the driving shaft coupling is internally provided with springs which are arranged at equal angles in the circumferential direction, the upper ends of the springs abut against the surface of the driving shaft coupling, and the lower ends of the springs abut against the upper surface inside the connecting shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911041147.4A CN110631446B (en) | 2019-10-30 | 2019-10-30 | A relocation mechanism for screw thread leads to ends and detects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911041147.4A CN110631446B (en) | 2019-10-30 | 2019-10-30 | A relocation mechanism for screw thread leads to ends and detects |
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| Publication Number | Publication Date |
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| CN110631446A true CN110631446A (en) | 2019-12-31 |
| CN110631446B CN110631446B (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911041147.4A Active CN110631446B (en) | 2019-10-30 | 2019-10-30 | A relocation mechanism for screw thread leads to ends and detects |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113566665A (en) * | 2021-06-07 | 2021-10-29 | 无锡宇沃工业科技有限公司 | Thread detection and adjustment module for laser welding part and thread detection device |
| CN113899290A (en) * | 2021-08-26 | 2022-01-07 | 四川航天川南火工技术有限公司 | Movable internal thread semi-automatic detection device |
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| CN113899290A (en) * | 2021-08-26 | 2022-01-07 | 四川航天川南火工技术有限公司 | Movable internal thread semi-automatic detection device |
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