CN102636145A - Automatic detection device for roundness of end part of special steel pipe and detection method thereof - Google Patents
Automatic detection device for roundness of end part of special steel pipe and detection method thereof Download PDFInfo
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- CN102636145A CN102636145A CN2012101035422A CN201210103542A CN102636145A CN 102636145 A CN102636145 A CN 102636145A CN 2012101035422 A CN2012101035422 A CN 2012101035422A CN 201210103542 A CN201210103542 A CN 201210103542A CN 102636145 A CN102636145 A CN 102636145A
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Abstract
The invention provides an automatic detection device for the roundness of an end part of a special steel pipe and a detection method thereof. The automatic detection device comprises an up-down movement driving mechanism of the detection device, a steel pipe angle displacement detection mechanism and a roundness detection mechanism of the end part of the steep pipe, wherein the up-down movement driving mechanism of the detection device is used for adjusting the positions of the steel pipe angle displacement detection mechanism and the roundness detection mechanism of the end part of the steep pipe when the steel pipe angle displacement detection mechanism and the roundness detection mechanism of the end part of the steep pipe are used for detecting the steel pipes with different pipe diameters; and the steel pipe angle displacement detection mechanism and the roundness detection mechanism of the end part of the steep pipe are combined to detect the pipe diameters of the steel pipes corresponding to different angle displacements, so as to finally obtain the roundness value of the end part of the steel pipe. The automatic detection device has the advantages of fast detection speed, reliable detection data, high automation degree and capability of extremely reducing the labor strength of people, and is suitable for the automatic detection of the roundness at two ends of the steel pipe, particularly the special steel pipe.
Description
Technical field
The present invention relates to a kind of pick-up unit and detection method, be specifically related to a kind of special steel pipe end circularity automatic detection device and detection method thereof, belong to shape manufacturing technology field.
Background technology
Along with the growth continuously and healthily of China's economy; Petroleum gas resource residing strategic position in national economy is day by day appeared suddenly; Except actively raising the petroleum gas resource from international crude oil market, China has also strengthened the exploitation of domestic petroleum natural gas source and exploration.Oil gas well drilling rod, drill collar and sleeve pipe are the critical components in the oil-gas drilling equipment, and drilling rod and sleeve pipe are a kind of special weldless steel tubes.At present; Drilling depth has reached more than the ten thousand metres, needs thousands of drilling rods up to a hundred, sleeve pipe to couple together during drilling well, and connected mode all is to connect through screw thread; This has proposed high requirement to oil gas well drilling rod and the processing of cannula tip screw thread; If drilling rod, sleeve pipe two ends are not straight or the end is not round, the two ends screw processing quality are affected, thereby cause strength of joint to be affected.
Find through retrieval: scholars such as Xue Ting, Yang schoolmate publish an article on 2003 03 phases at University Of Tianjin's journal; The optimal design and the demarcation of Visual Sensors Measuring Linearity of Steel Pipe have been introduced; Its method is: adopt 5 laser vision sensors, the simultaneously-measured scheme of segmentation of in the 1m of the two ends of weldless steel tube, respectively arranging respectively.Send a branch of optical plane by semiconductor laser LD; After weldless steel tube cuts mutually; Form an elliptic arc at the steel pipe outer round surface,, try to achieve each elliptic arc center coordinate in world coordinate system through the computer real-time Flame Image Process by the image of each elliptic arc of ccd video camera reception; Under computer control; Making hydraulic gear drive steel pipe contacts with the positioning switch of an end; Positioning switch promptly sends the measurement pulse signal to computing machine, through the time-delay about 1min, treat that steel pipe is stable after; Should 5 vision sensors of end by computer control, the elliptic arc image when gathering 5 optical planes fast and cutting mutually with steel pipe; Thereafter, the computer control hydraulic gear drives steel pipe and moves to the other end, and gathers the measuring-signal of 5 sensors of this end; Last computing machine is handled 10 width of cloth images, and through aforementioned algorithm, obtains the straightness error of steel pipe.This method is to take optical plane that 5 laser instruments send at the elliptic arc image that steel tube surface forms through CCD, confirms the linearity of the measuring section of surveying then through image processing and analyzing.
The deficiency of this method is: only proposed a kind of method that the steel pipe two ends are under static state detected linearity, failed to solve the problem that the circularity to the steel pipe two ends detects.
Summary of the invention
The present invention is directed to the deficiency that prior art exists; The automatic detection device of a kind of special steel pipe end circularity is provided; It can detect the circularity at steel pipe two ends; Have simultaneously at a high speed, reliable, advantage that automaticity is high, the present invention also aims to provide a kind of method of utilizing this device to realize the circularity robotization detection of steel pipe two ends.
The present invention realizes through following technical scheme:
A kind of special steel pipe end circularity automatic detection device; It comprises that pick-up unit column, position block, steel pipe rotation driving wheel, first suspension sheave, suspension plate, second suspension sheave, wire rope, counterweight block, pick-up unit move up and down driving mechanism, steel pipe Angular Displacement Detecting mechanism and steel tube end part circularity testing agency; Wherein, Suspension plate is fixed on the top of pick-up unit column; Wire rope is on first suspension sheave that is hung on the suspension plate two ends and second suspension sheave; One end connects counterweight block and other end joint detection device moves up and down driving mechanism; Steel tube end part circularity testing agency and steel pipe Angular Displacement Detecting mechanism are connected in pick-up unit and move up and down on the driving mechanism; And carry out gravitational equilibrium through wire rope and counterweight block, pick-up unit moves up and down driving mechanism and is fixed on the top of pick-up unit column and drives steel tube end part circularity testing agency and move up and down with steel pipe Angular Displacement Detecting mechanism, and position block and steel pipe rotate driving wheel and be arranged on the pick-up unit column below steel tube end part circularity testing agency and the steel pipe Angular Displacement Detecting mechanism.
Described pick-up unit moves up and down driving mechanism and comprises: servomotor, first synchronous pulley, first are with synchronously, second synchronous pulley, ball wire bar pair, line slideway auxiliary and back up pad; Wherein, Servomotor is fixedly mounted on the top of pick-up unit column; And through first synchronous pulley, first band and the rotation of second synchronous pulley driving ball wire bar pair synchronously; The back up pad suspension is connected in an end of said wire rope, and is connected with line slideway auxiliary with ball wire bar pair simultaneously, thereby moved up and down along line slideway auxiliary by driven by servomotor.
Described steel pipe Angular Displacement Detecting mechanism comprises: first displacement transducer, V-arrangement positioning supports piece, first pressure spring, scrambler, scrambler coupling shaft, friction roller and support roller; Wherein, V-arrangement positioning supports piece is installed on the said back up pad and with back up pad with the movable suspension of two bolts and moves up and down; First displacement transducer is fixedly mounted on the back up pad; And be positioned at V-arrangement positioning supports piece top to detect the displacement of V-arrangement positioning supports piece; The scrambler coupling shaft is movably arranged in the V-arrangement positioning supports piece together with the scrambler that is installed in its right ends and friction roller and can moves up and down, and the top that first pressure spring is pressed against the scrambler coupling shaft makes it to be in all the time the lower end of V-arrangement positioning supports piece, and support roller is rotatably installed in the bottom of V-arrangement positioning supports piece.
Described steel tube end part circularity testing agency comprises: circularity testing agency framework, stepper motor, the 3rd synchronous pulley, second are with synchronously, the 4th synchronous pulley, sliding shaft sleeve, spline housing, about revolve ball screw, right gage beam, left gage beam, sliding axle, displacement transducer erecting frame, second displacement transducer and second pressure spring; Wherein, Circularity testing agency frame fixation is installed on the said back up pad and can moves up and down with back up pad; Stepper motor is fixedly mounted on the circularity testing agency framework; And through the 3rd synchronous pulley, second be with synchronously, the 4th synchronous pulley and spline housing drive be placed through slidably in the sliding shaft sleeve about revolve the ball screw rotation; And then drive the right gage beam and the left gage beam that revolve on the ball screw about being connected and move in or out simultaneously; Sliding axle is placed through in the hole of right gage beam bottom slidably, and the displacement transducer erecting frame is fixedly mounted on the right outside of right gage beam, and second pressure spring is folded between displacement transducer erecting frame and the sliding axle; And the pushing and pressing sliding axle is inside, and second displacement transducer is fixedly mounted on the displacement transducer erecting frame and detects the displacement of sliding axle.
Another technical scheme of the present invention is:
A kind of special steel pipe end circularity automatic testing method, it may further comprise the steps:
The first step, tested steel pipe place on the steel pipe rotation driving wheel and axially are resisted against on the position block and locate, and servomotor passes through first synchronous pulley, first band and the rotation of second synchronous pulley driving ball wire bar pair synchronously, and then the driving back up pad moves down;
Second step; V-arrangement positioning supports piece moved down when back up pad moved down; Friction roller at first contacts with tested steel pipe, and is being pressed under the effect of first pressure spring on the arc surface of tested steel pipe top, and V-arrangement positioning supports piece continues to move down with back up pad; Touch on the tested steel pipe to be propped up no longer until support roller and move down; Back up pad continues to move down, and when first displacement transducer touches and detect V-arrangement positioning supports piece upper surface, stops to move, and this moment, steel pipe Angular Displacement Detecting mechanism arrived the detection position;
The 3rd step; When steel pipe Angular Displacement Detecting mechanism arrives the detection position; Tested steel pipe is clamped in the right gage beam of steel tube end part circularity testing agency and the centre of left gage beam; Effect lower slider axial compression at second pressure spring is against on the tested steel pipe, and this moment, steel tube end part circularity testing agency arrived the detection position;
In the 4th step, the tested steel pipe of steel pipe rotation drive wheel rotates, and detects beginning, and the friction roller in the steel pipe Angular Displacement Detecting mechanism rotates with tested steel pipe, and scrambler rotates through the scrambler coupling shaft thereupon, thereby detects the angle that tested steel pipe turns over; Meanwhile; Sliding axle in the steel tube end part circularity testing agency is move left and right with the rotation of tested steel pipe; Second displacement transducer records the maximal value and the minimum value of sliding axle move left and right; The difference of this two value is the difference of the maximum gauge and the minimum diameter of tested steel pipe, and half of this difference is the deviation from circular from the cross section to be detected of tested steel pipe, and the circularity of so far having accomplished steel tube end part detects; In conjunction with the Angular Displacement Detecting result of steel pipe Angular Displacement Detecting mechanism, can draw the relation between tested diameter of steel tube variation and the variation in angular displacement.
Compared with prior art, the present invention has following beneficial effect:
The present invention has realized that the robotization of steel pipe two ends circularity detects, and has the advantage that detection speed is fast, the detection data are reliable, automaticity is high and greatly reduce personnel labor intensity.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the steel pipe Angular Displacement Detecting mechanism enlarged drawing of border circular areas I among Fig. 1.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the steel tube end part circularity testing agency enlarged left view of border circular areas II among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is that prerequisite has provided detailed embodiment and concrete operating process with technical scheme of the present invention, but protection scope of the present invention is not limited only to following embodiment.
Embodiment as shown in Figure 1, said special steel pipe end circularity automatic detection device comprises: pick-up unit column 1, position block 2, steel pipe rotation driving wheel 3, first suspension sheave 13, suspension plate 14, second suspension sheave 21, wire rope 22, counterweight block 23, pick-up unit move up and down driving mechanism, steel pipe Angular Displacement Detecting mechanism and steel tube end part circularity testing agency.Said suspension plate 14 is horizontally fixed on the top of pick-up unit column 1, and its two ends are equipped with first suspension sheave 13 and second suspension sheave 21 rotationally; Said wire rope 22 is around being hung on this first suspension sheave 13 and second suspension sheave 21, and these wire rope 22 1 ends connect said counterweight block 23, and the other end connects said pick-up unit and moves up and down driving mechanism; Said steel tube end part circularity testing agency and steel pipe Angular Displacement Detecting mechanism are connected in this pick-up unit and move up and down on the driving mechanism, and carry out gravitational equilibrium through wire rope 22 and counterweight block 23; Said pick-up unit moves up and down the top that driving mechanism is fixed on pick-up unit column 1, and can drive this steel tube end part circularity testing agency and steel pipe Angular Displacement Detecting mechanism moves up and down; Said position block 2 rotates the below that driving wheel 3 is positioned at this steel tube end part circularity testing agency and steel pipe Angular Displacement Detecting mechanism with steel pipe, is provided with to be installed on the pick-up unit column 1.
See also Fig. 1, described pick-up unit moves up and down driving mechanism and comprises: servomotor 20, first synchronous pulley 19, first are with 18, second synchronous pulley 17, ball wire bar pair 16, line slideway auxiliary 15 and back up pad 12 synchronously.Said back up pad 12 suspensions are connected in an end of said wire rope 22; And carry out gravitational equilibrium through first suspension sheave 13, suspension plate 14, second suspension sheave 21, wire rope 22 and counterweight block 23; With this back up pad 12 of load that alleviates servomotor 20; This back up pad 12 is fixedly connected said ball wire bar pair 16, and being slidingly connected simultaneously is installed on the line slideway auxiliary 15 on the pick-up unit column 1; Said servomotor 20 is fixedly mounted on the top of pick-up unit column 1, and is with 18 and second synchronous pulley 17 to drive ball wire bar pair 16 rotations synchronously through first synchronous pulley 19, first, moves up and down along line slideway auxiliary 15 thereby drive back up pad 12.
Combine to consult Fig. 1, Fig. 2 and Fig. 3 again, described steel pipe Angular Displacement Detecting mechanism comprises: first displacement transducer 11, V-arrangement positioning supports piece 10, first pressure spring 8, scrambler 9, scrambler coupling shaft 7, friction roller 5 and support roller 6.The movable suspension of two bolts of said V-arrangement positioning supports piece 10 usefulness is installed on the said back up pad 12, and V-arrangement positioning supports piece 10 and whole steel pipe Angular Displacement Detecting mechanism can be moved up and down with this back up pad 12; Said first displacement transducer 11 is fixedly mounted on this back up pad 12 and is positioned at said V-arrangement positioning supports piece 10 tops, is used to detect the displacement of this V-arrangement positioning supports piece 10; Said scrambler 9 and friction roller 5 are installed in the right ends of said scrambler coupling shaft 7 respectively, and this scrambler 9 is movably arranged in the V-arrangement positioning supports piece 10 with friction roller 5 and scrambler coupling shaft 7, and can move up and down; Said first pressure spring 8 is pressed against the top of this scrambler coupling shaft 7, and under the effect of first pressure spring 8, this scrambler coupling shaft 7 is in the lower end of V-arrangement positioning supports piece 10 all the time; Said support roller 6 is rotatably installed in the bottom of this V-arrangement positioning supports piece 10, and quantity can be more than one, in the present embodiment is 4.
See also Fig. 4, described steel tube end part circularity testing agency comprises: circularity testing agency framework 24, stepper motor 25, the 3rd synchronous pulley 26, second be with synchronously the 27, the 4th synchronous pulley 28, sliding shaft sleeve 29, spline housing 30, about revolve ball screw 31, right gage beam 32, left gage beam 33, sliding axle 34, displacement transducer erecting frame 35, second displacement transducer 36 and second pressure spring 37.Said circularity testing agency framework 24 is fixedly mounted on the said back up pad 12, and circularity testing agency framework 24 can be moved up and down with this back up pad 12 together with whole steel tube end part circularity testing agency; Said sliding shaft sleeve 29 is fixedly installed on the sidewall of this circularity testing agency framework 24, revolves ball screw 31 about said to be placed through slidably in this sliding shaft sleeve 29, and said right gage beam 32 is connected with left gage beam 33 and revolves about this on ball screw 31; Said stepper motor 25 is fixedly mounted on the circularity testing agency framework 24; And be with the 27, the 4th synchronous pulley 28 and spline housing 30 to drive synchronously through the 3rd synchronous pulley 26, second and revolve ball screw 31 rotations about this; Move in or out simultaneously with left gage beam 33 thereby drive right gage beam 32, to adapt to the measurement of different tube diameters steel pipe; Consider that steel pipe can rock in rotary course, the global facility that revolves ball screw 31, right gage beam 32 and left gage beam 33 formations about this can horizontally slip in said sliding shaft sleeve 29; Said sliding axle 34 is placed through in the hole of right gage beam 32 bottoms slidably; Said displacement transducer erecting frame 35 is fixedly mounted on the right outside of right gage beam 32; Said second pressure spring 37 is folded between this displacement transducer erecting frame 35 and the sliding axle 34; And pushing and pressing sliding axle 34 is inside, and said second displacement transducer 36 is fixedly mounted on this displacement transducer erecting frame 35, in order to detect the displacement of this sliding axle 34.
It is following to adopt device according to the invention to carry out the method that special steel pipe end circularity automatically detects, and step comprised for four steps altogether:
The first step, tested steel pipe 4 are positioned on the steel pipe rotation driving wheel 3, and axially are resisted against location on the position block 2 of pick-up unit column 1; The servomotor 20 that is fixedly mounted on pick-up unit column 1 top is with 18 and second synchronous pulley 17 to drive ball wire bar pair 16 rotations through first synchronous pulley 19, first synchronously; Move down thereby drive the back up pad 12 that is slidingly mounted on the line slideway auxiliary 15, be convenient to detect the steel pipe of different-diameter with the position of adjustment testing agency.
Second step; When back up pad 12 moves down; The V-arrangement positioning supports piece 10 that movable suspension is installed on the back up pad 12 also moves down together, move down a segment distance after, the friction roller 5 that is installed in scrambler coupling shaft 7 right-hand members at first contacts with the arc surface at tested steel pipe 4 tops; Along with V-arrangement positioning supports piece 10 continues to move down, friction roller 5 is on the arc surface that is pressed on tested steel pipe 4 tops under the effect of first pressure spring 8; V-arrangement positioning supports piece 10 continues to move down with back up pad 12 under the self gravitation effect; When 4 support rollers 6 that are rotatably installed in V-arrangement positioning supports piece 10 lower ends touched on the arc surface at tested steel pipe 4 tops, V-arrangement positioning supports piece 10 was positioned at and supportedly on the arc surface at tested steel pipe 4 tops firmly no longer moves down; And back up pad 12 continues to move down, and first displacement transducer 11 on being fixedly mounted on back up pad 12 stops to move when touching and detecting the upper surface of V-arrangement positioning supports piece 10; This moment, friction roller 5 was pressed on the arc surface at tested steel pipe 4 tops, explanation simultaneously, and the steel pipe Angular Displacement Detecting mechanism that is connected under the back up pad 12 has arrived the detection position, and duty is seen Fig. 3.
The 3rd step; When steel pipe Angular Displacement Detecting mechanism moves down into the detection position; Tested steel pipe 4 is clamped in the centre of right gage beam 32 with the left gage beam 33 of steel tube end part circularity testing agency; Under the effect of second pressure spring 37, the sliding axle 34 that is movably arranged in the right gage beam 32 is pressed against on the tested steel pipe 4; Be fixedly mounted on second displacement transducer 36 on the displacement transducer erecting frame 35 and promptly can detect the displacement of sliding axle 34, this moment, steel tube end part circularity testing agency arrived the detection position, and duty is seen Fig. 4; Consider that steel pipe can rock in rotary course, about revolve the global facility that ball screw 31, right gage beam 32 and left gage beam 33 constitute and in sliding shaft sleeve 29, can horizontally slip.
In the 4th step, steel pipe rotation driving wheel 3 drives tested steel pipe 4 and rotates, and detects beginning, and steel pipe Angular Displacement Detecting mechanism, steel tube end part circularity testing agency get into detected state simultaneously; In steel pipe Angular Displacement Detecting mechanism, the friction roller 5 that is installed in scrambler coupling shaft 7 right-hand members rotates with tested steel pipe 4, and the scrambler 9 that is installed in scrambler coupling shaft 7 left ends rotates thereupon, thereby detects the angle that tested steel pipe 4 turns over; Meanwhile, in steel tube end part circularity testing agency, tested steel pipe 4 is clamped in the centre of right gage beam 32 and left gage beam 33; Rotation along with tested steel pipe 4; If there is roundness deviation in tested steel pipe 4, will promote to be slidingly mounted on sliding axle 34 move left and right in the right gage beam 32, second displacement transducer 36 records the maximal value and the minimum value of sliding axle 34 move left and right; The difference of this two value is the difference of the maximum gauge and the minimum diameter of tested steel pipe 4; Half of this difference is the deviation from circular from the cross section to be detected of tested steel pipe 4, and so far, the circularity of just having accomplished steel tube end part detects.In conjunction with the Angular Displacement Detecting result of steel pipe Angular Displacement Detecting mechanism, can also draw the vary in diameter of tested steel pipe 4 and the relation between the variation in angular displacement.
Special steel pipe of the present invention end circularity automatic testing method has the advantage that detection speed is fast, the detection data are reliable, automaticity is high and greatly reduce personnel labor intensity.
Claims (5)
1. special steel pipe end circularity automatic detection device; It is characterized in that: said automatic detection device comprises that pick-up unit column, position block, steel pipe rotation driving wheel, first suspension sheave, suspension plate, second suspension sheave, wire rope, counterweight block, pick-up unit move up and down driving mechanism, steel pipe Angular Displacement Detecting mechanism and steel tube end part circularity testing agency; Wherein, Suspension plate is fixed on the top of pick-up unit column; Wire rope is on first suspension sheave that is hung on the suspension plate two ends and second suspension sheave; One end connects counterweight block and other end joint detection device moves up and down driving mechanism; Steel tube end part circularity testing agency and steel pipe Angular Displacement Detecting mechanism are connected in pick-up unit and move up and down on the driving mechanism; And carry out gravitational equilibrium through wire rope and counterweight block, pick-up unit moves up and down driving mechanism and is fixed on the top of pick-up unit column and drives steel tube end part circularity testing agency and move up and down with steel pipe Angular Displacement Detecting mechanism, and position block and steel pipe rotate driving wheel and be arranged on the pick-up unit column below steel tube end part circularity testing agency and the steel pipe Angular Displacement Detecting mechanism.
2. special steel pipe according to claim 1 end circularity automatic detection device; It is characterized in that: described pick-up unit moves up and down driving mechanism and comprises: servomotor, first synchronous pulley, first are with synchronously, second synchronous pulley, ball wire bar pair, line slideway auxiliary and back up pad; Wherein, Servomotor is fixedly mounted on the top of pick-up unit column, and through first synchronous pulley, first band and the rotation of second synchronous pulley driving ball wire bar pair synchronously, the back up pad suspension is connected in an end of said wire rope; And be connected with line slideway auxiliary with ball wire bar pair simultaneously, thereby moved up and down along line slideway auxiliary by driven by servomotor.
3. special steel pipe according to claim 2 end circularity automatic detection device; It is characterized in that: described steel pipe Angular Displacement Detecting mechanism comprises: first displacement transducer, V-arrangement positioning supports piece, first pressure spring, scrambler, scrambler coupling shaft, friction roller and support roller; Wherein, V-arrangement positioning supports piece is installed on the said back up pad and with back up pad with the movable suspension of two bolts and moves up and down; First displacement transducer is fixedly mounted on the back up pad; And be positioned at V-arrangement positioning supports piece top to detect the displacement of V-arrangement positioning supports piece; The scrambler coupling shaft is movably arranged in the V-arrangement positioning supports piece together with the scrambler that is installed in its right ends and friction roller and can moves up and down, and the top that first pressure spring is pressed against the scrambler coupling shaft makes it to be in all the time the lower end of V-arrangement positioning supports piece, and support roller is rotatably installed in the bottom of V-arrangement positioning supports piece.
4. special steel pipe according to claim 3 end circularity automatic detection device; It is characterized in that: described steel tube end part circularity testing agency comprises: circularity testing agency framework, stepper motor, the 3rd synchronous pulley, second are with synchronously, the 4th synchronous pulley, sliding shaft sleeve, spline housing, about revolve ball screw, right gage beam, left gage beam, sliding axle, displacement transducer erecting frame, second displacement transducer and second pressure spring; Wherein, Circularity testing agency frame fixation is installed on the said back up pad and can moves up and down with back up pad; Stepper motor is fixedly mounted on the circularity testing agency framework; And through the 3rd synchronous pulley, second be with synchronously, the 4th synchronous pulley and spline housing drive be placed through slidably in the sliding shaft sleeve about revolve the ball screw rotation; And then drive the right gage beam and the left gage beam that revolve on the ball screw about being connected and move in or out simultaneously; Sliding axle is placed through in the hole of right gage beam bottom slidably, and the displacement transducer erecting frame is fixedly mounted on the right outside of right gage beam, and second pressure spring is folded between displacement transducer erecting frame and the sliding axle; And the pushing and pressing sliding axle is inside, and second displacement transducer is fixedly mounted on the displacement transducer erecting frame and detects the displacement of sliding axle.
5. detection method that adopts the described special steel pipe of claim 4 end circularity automatic detection device, it is characterized in that: said detection method may further comprise the steps:
The first step, tested steel pipe place on the steel pipe rotation driving wheel and axially are resisted against on the position block and locate, and servomotor passes through first synchronous pulley, first band and the rotation of second synchronous pulley driving ball wire bar pair synchronously, and then the driving back up pad moves down;
Second step; V-arrangement positioning supports piece moved down when back up pad moved down; Friction roller at first contacts with tested steel pipe, and is being pressed under the effect of first pressure spring on the arc surface of tested steel pipe top, and V-arrangement positioning supports piece continues to move down with back up pad; Touch on the tested steel pipe to be propped up no longer until support roller and move down; Back up pad continues to move down, and when first displacement transducer touches and detect V-arrangement positioning supports piece upper surface, stops to move, and this moment, steel pipe Angular Displacement Detecting mechanism arrived the detection position;
The 3rd step; When steel pipe Angular Displacement Detecting mechanism arrives the detection position; Tested steel pipe is clamped in the right gage beam of steel tube end part circularity testing agency and the centre of left gage beam; Effect lower slider axial compression at second pressure spring is against on the tested steel pipe, and this moment, steel tube end part circularity testing agency arrived the detection position;
In the 4th step, the tested steel pipe of steel pipe rotation drive wheel rotates, and detects beginning, and the friction roller in the steel pipe Angular Displacement Detecting mechanism rotates with tested steel pipe, and scrambler rotates through the scrambler coupling shaft thereupon, thereby detects the angle that tested steel pipe turns over; Meanwhile; Sliding axle in the steel tube end part circularity testing agency is move left and right with the rotation of tested steel pipe; Second displacement transducer records the maximal value and the minimum value of sliding axle move left and right; The difference of this two value is the difference of the maximum gauge and the minimum diameter of tested steel pipe, and half of this difference is the deviation from circular from the cross section to be detected of tested steel pipe, and the circularity of so far having accomplished steel tube end part detects; In conjunction with the Angular Displacement Detecting result of steel pipe Angular Displacement Detecting mechanism, can draw the relation between tested diameter of steel tube variation and the variation in angular displacement.
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| CN103954207A (en) * | 2014-04-23 | 2014-07-30 | 武汉钢铁集团湖北华中重型机械制造有限公司 | Method for detecting product coaxiality of medium and large step type rotating member |
| CN103954207B (en) * | 2014-04-23 | 2016-08-24 | 武汉钢铁集团湖北华中重型机械制造有限公司 | A kind of detection method of big-and-middle-sized staged revolving meber product axiality |
| CN106272069A (en) * | 2015-06-11 | 2017-01-04 | 徐工集团工程机械股份有限公司 | The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method |
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| CN106979766B (en) * | 2016-01-15 | 2019-05-28 | 宝山钢铁股份有限公司 | The measuring device and method of pole material parameter |
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| CN109115152A (en) * | 2018-07-27 | 2019-01-01 | 深圳市恩普达工业系统有限公司 | A kind of battery automatic thickness tester |
| CN113334389A (en) * | 2021-08-02 | 2021-09-03 | 宝信软件(南京)有限公司 | Steel pipe end robot track self-adaption and deviation rectification system and method |
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