CN103383224B - Pilger pipe mill roll pass pick-up unit and detection method - Google Patents
Pilger pipe mill roll pass pick-up unit and detection method Download PDFInfo
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Abstract
The present invention relates to the detection method of a kind of pilger pipe mill roll pass pick-up unit and pilger pipe mill roll pass, described detection method based on this pick-up unit, specifically comprise measure roll basic data, mounting and adjusting pick-up unit in roll barrel position, measure calculating and the determining step of roll pass cross section each several part parameter value and error amount.The full-scale quantification adopting the present invention can realize pilger pipe mill roll detects, and reflects the allowance balance situation in each portion of pass accurately, really, improves precision and efficiency of detecting.
Description
Technical field
The present invention relates to a kind of device for detecting length, particularly a kind of pick-up unit for detecting roll pass.
Background technology
For heavy caliber, heavy wall and double extra-strong seamless steel tube production, traditional method has push pipe extrusion and Pilger method two kinds.Namely pilgrim rolling machine is the milling train utilizing the roll of band die rolled section hole slot the hollow billet of interpolation plug to be rolled into steel pipe, and roller rotational can roll out one section of steel pipe for one week.Pilger pipe mill roll is one of main production tool and mould of pilgrim rolling machine rolling seamless steel pipe, comprise the middle body of roll and the roll neck being positioned at body of roll two ends, the hole slot of rolling hollow billet is provided with in the body of roll, the pass of pilger pipe mill roll hole slot is different from common hot rolling shaped roll pass, the pass of pilger pipe mill roll hole slot is very complicated, is all tapered particular curve along roll mandrel to (pass opening) and radial (pass radius) both direction.
As shown in Figure 1, as shown in Figure 2, as shown in Figure 3, as shown in Figure 3, pass is made up of three parts the axial cut-open view of pilger pipe mill roll hole slot the radial cross-section of pilger pipe mill roll hole slot the structure of pilger pipe mill roll, middle part circular arc portion and symmetria bilateralis oblique line portion.As shown in Figure 2, the pass radius of pilger pipe mill roll hole slot except the arc radius R in II-III district be except fixed numbers, the arc radius R in other region along the circumferential direction often increases progressively 10 ° of conversion numerical value, and the entity radius value (i.e. the diameter of axle) in II-III district whole be circumferentially maximal value.So the entity in II-III district be can with common lathe in machining out, other region then must be equipped with specific program with specialized nc machine tool could correct processing.
The production run of pilger pipe mill roll is generally: a, cast blank; B, the processing body of roll and the roll neck at two ends are to finished product; C, II-III district with common lathe in machining hole slot, and stay certain surplus, d, with other positions of specialized nc machine tool processing pass to finished product.And the processing of specialized nc machine tool because of the complicated efficiency of pass very low, be improve working (machining) efficiency, the process redundancy for pass surface requires very strict.Blank allowance requires as follows: the arc radius R in II-III district is fixed numbers, the monolateral surplus △ R1=5mm of normal direction after common lathe in machining; I-II, III-IV, IV-I district is cast blank surface, the monolateral surplus 10mm of normal direction≤△ R≤30mm and radial monolateral surplus △ Y≤37mm.
For whether the pass surplus before the processing of checking specialized nc machine tool meets the requirements, need to measure pass each several part size, and for this type of special and complicated pass, conventional sense instrument and method cannot obtain testing result accurately.Such as, if use template method to detect, whether need make 29 pieces of large-scale models, not only expense is up to tens thousand of unit, and can only qualitatively judge qualified, accurately can not reflect the concrete numerical value of process redundancy; If with ruler or slide calliper rule, can only the degree of depth of measuring flume and width of rebate, namely can only record the axial surplus of notch and the radial slack of bottom land, then cannot measure the process redundancy in other region.
Because the measuring accuracy of pilger pipe mill roll pass machining surplus is lower, the exact value of each several part process redundancy can not be obtained, casting mould can not be adjusted according to process redundancy, the quality problems that frequent generation cast blank surplus is inadequate or surplus is excessive, cause tremendous economic loss to the production of pilger pipe mill roll.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of universal pilger pipe mill roll pass pick-up unit, and this device can carry out quantification to the size at each position of pass and detect, and the improvement for casting mould provides data more accurately.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
Pilger pipe mill roll pass pick-up unit, comprise the horizontal main scale for measuring roll pass axial length arranged with pilger pipe mill roll centerline axis parallel, the lengthwise centers of horizontal main scale is set to zero graduation, and horizontal main scale two ends are respectively arranged with and are slidably matched with horizontal main scale and for the detent mechanism of position level main scale;
The lengthwise centers of described horizontal main scale also by hinge one for measuring the rotating sliding rule of roll pass radial dimension, the length direction of rotating sliding rule is provided through the elongated slot of bearing pin;
Bearing pin between described horizontal main scale and rotating sliding rule is also provided with the protractor for measuring roll pass inclination angle that horizontal line and horizontal main scale be arranged in parallel, protractor is fixedly connected on horizontal main scale.
Improvement of the present invention is: the both sides that described horizontal main scale is positioned at bearing pin are respectively arranged with to be slidably matched with horizontal main scale and are used to indicate the vernier of roll pass axial length.
Improvement of the present invention is: the outer end of described bearing pin is provided with the rhombus pointer being used to indicate roll pass inclination angle and roll pass radial dimension, the pointer of rhombus pointer is vertical with rotating sliding rule to be arranged, and the back side of rhombus pointer is provided with for clamping rotating sliding rule and the fastener that rotating sliding rule can be made to slide along it.
The concrete structure of described detent mechanism is: described detent mechanism comprises and being arranged on horizontal main scale and the slide block be slidably matched with horizontal main scale, the top of slide block is provided with the support claw of " several " font, bottom and the roll barrel end face of support claw both sides fit, and described support claw are provided through support claw top and are connected with slide block and for the screw rod of adjusting slider height.
The improvement of described detent mechanism is: the end face outside of described slide block is provided with the location side plate for clamping roll barrel outer face.
The further improvement of described detent mechanism is: on described rotating sliding rule, the sideline, side of elongated slot overlaps with the width centreline of rotating sliding rule, and one end that rotating sliding rule contacts with roll pass is tip, and the end of tip is the zero graduation of rotating sliding rule.
A kind of pilger pipe mill roll pass detection method, the method completes the detection of roll pass by pilger pipe mill roll pass pick-up unit, specifically comprises the following steps:
The first step, measures roll basic data: measure body of roll outside diameter and barrel length; Then on the body of roll cylindrical of pilger pipe mill roll to be detected, divide angle subregion according to 36 grades, and mark the bus of R0 ~ R35;
Second step, mounting and adjusting pick-up unit is in roll barrel position: select a wherein bus, pilger pipe mill roll pick-up unit is placed on roll barrel, and adjust the position of pick-up unit on the body of roll, every data in the pilger pipe mill roll pass cross section being this bus place of canonical measure with this bus;
3rd step, measures roll pass cross section each several part parameter value: the angle value β and the radius value R ' that measure middle part circular arc portion on roll pass cross section; Measure the hypotenuse angle θ of symmetria bilateralis oblique line portion on roll pass cross section; Measure the horizontal range L of roll pass both sides notch
k;
4th step, calculating error values: according to arc radius value R ', angle beta, the hypotenuse angle θ and notch horizontal range L of the 3rd pacing amount
k, and in conjunction with pilger pipe mill roll finished article design value, calculate normal direction surplus △ R and the radial slack △ Y at each position.
In pilger pipe mill roll pass detection method, the concrete structure of pick-up unit is: described pilger pipe mill roll pass pick-up unit comprises horizontal main scale, the lengthwise centers of horizontal main scale is set to zero graduation, the both sides that horizontal main scale is positioned at lengthwise centers are respectively arranged with a vernier, and horizontal main scale two ends are respectively arranged with the detent mechanism that to be slidably matched with horizontal main scale; The lengthwise centers of described horizontal main scale, also by hinge one rotating sliding rule, the length direction of rotating sliding rule is provided through the elongated slot of bearing pin; Bearing pin between horizontal main scale and rotating sliding rule is also provided with protractor, and protractor is fixedly connected on horizontal main scale, and protractor round dot overlaps with the lengthwise centers of horizontal main scale; The outer end of described bearing pin is provided with rhombus pointer, and the pointer of rhombus pointer is vertical with rotating sliding rule to be arranged.
Concrete steps in pilger pipe mill roll pass detection method second step of the present invention are:
First, detent mechanism is supported on body of roll cylindrical, and props up the radial position of roll cylindrical detection level main scale by Steel Ruler, make horizontal main scale parallel with roll bus;
Secondly, to roll barrel two end faces mobile positioning mechanism, the position of adjustment two verniers, simultaneously along roll mandrel to moving in parallel horizontal main scale, makes two verniers be symmetrically distributed in the both sides of horizontal main scale center-zero;
Then, along body of roll cylindrical slip detection device, in the process that pick-up unit slides a week, when the center-zero of horizontal main scale is positioned on the radial section in the roll pass center of circle in more than 2/3rds regions of 36 deciles, fastening detent mechanism, makes horizontal main scale be fixed on the bus at any pass place.
The concrete steps of the 3rd step are:
On described measurement roll pass cross section, the middle part angle value β of circular arc portion and the process of radius value R ' are: rotate rotating sliding rule around bearing pin, to move around rotating sliding rule along the elongated slot of rotating sliding rule simultaneously, when the tip of rotating sliding rule contacts with roll pass, read the arc radius value R ' of current circular arc different angles β according to the pointer on rhombus pointer;
On described measurement roll pass cross section, the process of the hypotenuse angle θ of symmetria bilateralis oblique line portion is: with a right-angle side laminating roll pass hypotenuse of right angle triangle, movable triangular plate and rotating sliding rule simultaneously, another right-angle side of set square and the side of rotating sliding rule are fitted, and now the angle value of read volume hornwork is the hypotenuse angle θ of oblique line;
The horizontal range L of described measurement roll pass both sides notch
kprocess be: along horizontal main scale moving cursor, make two verniers respectively with the notch of roll pass both sides in along fitting, read the Distance geometry between two verniers, be the horizontal range L of roll pass both sides notch
k.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
Pick-up unit of the present invention integrates length, circular arc, angle three kinds of measurement functions, in the process that pilger pipe mill roll pass is detected, in conjunction with detection method of the present invention, full-scale quantification can be realized detect, reflect the allowance balance situation in each portion of pass accurately, really, improve precision and efficiency of detecting.Further, also can improve casting mould according to testing result of the present invention, adopt the mould after improving to carry out the manufacture of pilger pipe mill roll, avoid surplus generation that is excessive or not foot phenomenon, make the passing rate of processing of pilger pipe mill roll reach 100%.
The setting of vernier of the present invention, handled easily person reads outside roll pass axial length, can also detect start before the location of the horizontal main scale lengthwise centers of assistance, to ensure accuracy of detection further.
The setting of rhombus pointer, be mainly used in carrying out visual indication to the angle measured and radial dimension, handled easily personnel read data; In addition, the fastener that the rhombus pointer back side is arranged is used for clamping rotating sliding rule, and rotating sliding rule is moved around along fastener, avoids the phenomenon generation that rotating sliding rule freely swings around bearing pin, improves the operability of rotating sliding rule.
The setting of detent mechanism top shoe, for enabling detent mechanism slide on horizontal main scale, is convenient to regulate its position.Support claw is set to a few font, and detent mechanism can be made to be fitted in roll barrel end face steadily, ensures the stability of horizontal main scale further.The stability after to horizontal main scale location that arranges of location side plate also serves larger effect, can effectively preventing moving axially of horizontal main scale, providing reliable guarantee for improving measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of pilger pipe mill roll;
Fig. 2 is the radial cross-section of pilger pipe mill roll hole slot;
Fig. 3 is the axial cut-open view of pilger pipe mill roll hole slot;
Fig. 4 is structural representation of the present invention;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the enlarged drawing of detent mechanism of the present invention;
Fig. 7 is the enlarged drawing of rhombus pointer of the present invention.
Wherein, the A. body of roll, B. roll neck, 1. detent mechanism, 2. horizontal main scale, 3. protractor, 4. bearing pin, 5. rotating sliding rule, 6. vernier, 7. locate side plate, 8. hole slot, 9. rhombus pointer, 11. slide blocks, 12. support claws, 13. screw rods, 14. screws.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
For detecting a pick-up unit for pilger pipe mill roll pass size, its one-piece construction as shown in Figure 4.Comprise horizontal main scale 2, protractor 3, rotating sliding rule 5 and rhombus pointer 9.Horizontal main scale 2 is arranged with pilger pipe mill roll centerline axis parallel, and the zero graduation of horizontal main scale 2 is arranged on the lengthwise centers of horizontal main scale, for measuring the axial length of roll pass; The zero graduation both sides that horizontal main scale 2 is positioned at arrange a vernier 6 respectively, and vernier 6 and horizontal main scale are slidably matched, and are used to indicate the axial length of roll pass.Horizontal main scale 2 two ends are respectively arranged with detent mechanism 1, and for position level main scale, detent mechanism 1 and horizontal main scale 2 are slidably matched.
Detent mechanism 1 as shown in Figure 5 and Figure 6, comprises the slide block 11 be arranged on horizontal main scale 2, and slide block 11 and horizontal main scale are slidably matched; The end face outside of slide block is provided with location side plate 7, location side plate 7, for being connected to roll barrel outer face, ensures that horizontal main scale 2 is parallel with the bus of roll barrel further.Location side plate 7 is fastened on slide block outer face by Screw.
The top of slide block 11 is provided with the support claw 12 of " several " font, and bottom and the roll barrel end face of support claw 12 both sides fit, and support claw 12 is supported on the excircle of roll barrel, ensure that horizontal main scale 2 is parallel with the bus of roll barrel.The top of support claw 12 is provided with screw rod 13, screw rod 13 stretches into after in support claw through support claw 12 top and is connected with the slide block being positioned at support claw, for the distance between adjusting slider and support claw, thus the radial height of horizontal main scale in adjusting slider, to ensure on the center of circle being centrally located at roll pass circular arc of horizontal main scale 2.
Rotating sliding rule 5 is hinged on the lengthwise centers of horizontal main scale 2 by bearing pin 4, and rotating sliding rule 5 is for measuring the radial dimension of roll pass.The length direction of rotating sliding rule 5 being provided through the elongated slot of bearing pin, by changing the position of bearing pin in elongated slot, rotating sliding rule can being moved in the longitudinal direction; Certain rotating sliding rule also can rotate around bearing pin.The sideline, side of elongated slot overlaps with the width centreline of rotating sliding rule 5, and one end that rotating sliding rule 5 contacts with roll pass is tip, and the end of tip is the zero graduation of rotating sliding rule.
Rhombus pointer 9 is fixedly connected on the outer end of bearing pin, as shown in Figure 7.The back side of rhombus pointer 9 is provided with fastener, and the plane of fastener is parallel with the back side of rhombus pointer, and fastener is used for clamping rotating sliding rule 5, and can make to slide in rotating sliding rule 5 fastener.The pointer of rhombus pointer 9 is vertical with rotating sliding rule 5 to be arranged, and is used to indicate the inclination angle of roll pass and the radial dimension of roll pass.
Protractor 3 between horizontal main scale 2 and rotating sliding rule 5, for measuring the inclination angle of roll pass.The center of circle of protractor is hinged on bearing pin, and protractor 3 is fixedly connected on horizontal main scale, overlaps with the lengthwise centers of horizontal main scale with guaranteed discharge hornwork round dot, and horizontal line and the horizontal main scale of protractor 3 be arranged in parallel.
Pilger pipe mill roll pass detection method, the method completes the detection of roll pass by pilger pipe mill roll pass pick-up unit.To measure every data instance on the pilger pipe mill roll pass cross section that wherein bus is corresponding, detection method of the present invention is described below.
The first step, measures roll basic data: the body of roll outside diameter of the pilger pipe mill roll detected as required and barrel length, tentatively adjust pick-up unit of the present invention; And according to Fig. 2 roll barrel cylindrical carrying out subregion such as angle 36 grade, then mark the bus of R0 ~ R35.
Second step, mounting and adjusting pick-up unit is in roll barrel position: select a wherein bus, pilger pipe mill roll pick-up unit is placed on roll barrel, and adjust the position of pick-up unit on the body of roll, with this bus for standard, measure every data in the pilger pipe mill roll pass cross section at this bus place.Such as select the bus corresponding to R6.
The concrete adjustment process of pick-up unit is as described below:
First, by the slide block 11 of detent mechanism by the both sides of support claw 12 symmetric support at the corresponding bus of body of roll cylindrical R6, accurate adjustment screw rod 13, to change the vertical height of horizontal main scale, and the radial position of roll cylindrical detection level main scale 2 is propped up by Steel Ruler, make horizontal main scale 2 parallel with roll bus.
Secondly, to roll barrel two end faces mobile positioning mechanism, the side of location side plate 7 is made to be fitted on the end face of roll barrel, the position of adjustment two verniers 6, simultaneously along roll mandrel to moving in parallel horizontal main scale 2, two verniers 6 are made to be symmetrically distributed in the both sides of horizontal main scale 2 center-zero.
Then, along body of roll cylindrical slip detection device, in the process that pick-up unit slides a week, when the center-zero of horizontal main scale 2 is positioned on the radial section in the roll pass center of circle in more than 2/3rds regions of 36 deciles, by trip bolt 14 by detent mechanism and the locking of horizontal main scale, horizontal main scale is fixed on the bus at R6 place.If the center-zero of horizontal main scale 2 is positioned on the radial section in the roll pass center of circle in the less region of 36 deciles, so then need to readjust horizontal main scale position in the axial direction.
3rd step, measures roll pass cross section each several part parameter value.
Measure angle value β and the radius value R ' of middle part circular arc portion on roll pass cross section: rotate rotating sliding rule 5 around bearing pin, to move around rotating sliding rule 5 along the elongated slot of rotating sliding rule simultaneously, when the tip of rotating sliding rule 5 contacts with roll pass, read arc radius value R ' and the angle beta of the both sides different angles of current circular arc according to the pointer on rhombus pointer 9.
Measure the hypotenuse angle θ of symmetria bilateralis oblique line portion on roll pass cross section: with the hypotenuse of a right-angle side laminating roll pass of right angle triangle, movable triangular plate and rotating sliding rule 5 simultaneously, another right-angle side of set square and the side of rotating sliding rule 5 are fitted, and now the angle value of read volume hornwork is the hypotenuse angle θ of symmetrical oblique line portion.
Measure the horizontal range L of roll pass both sides notch
k: along horizontal main scale moving cursor 6, two verniers 6 are fitted with edge in the notch of roll pass both sides respectively, reads the Distance geometry between two verniers, be the horizontal range L of roll pass both sides notch
k.
4th step, calculating error values.
According to arc radius value R ', angle beta, the hypotenuse angle θ and notch horizontal range L of the 3rd pacing amount
k, and in conjunction with pilger pipe mill roll finished article design value, by table 1 formulae discovery, normal direction surplus △ R and the radial slack △ Y at each position can be obtained.
Table 1
In formula: R is the design load of pilger pipe mill roll pass circular arc portion radius;
α is the angle value between the radius at roll cross section oblique line portion and the tangent place of circular arc portion and horizontal main scale, is also design load;
The design load of L pilger pipe mill roll pass notch distance;
M is the correction factor of circular arc portion △ Y, to the arc method on I-II, III-IV, IV-I cast blank surface, district to monolateral surplus △ R and arc angle relevant, when the arc method on I-II, III-IV, IV-I cast blank surface, district is to monolateral surplus △ R=15mm, the modified value of △ Y is as shown in table 2.
Table 2
| Angle | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| M | 5.5 | 5 | 4.5 | 4 | 3.5 | 3.1 | 2.8 | 2.5 | 2.3 | 2.1 |
| Angle | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
| M | 1.9 | 1.6 | 1.3 | 1.1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 |
Finally according to △ R, the △ Y and the error criterion that calculate gained, judge that whether the pass of pilger pipe mill roll is qualified.
Claims (9)
1. pilger pipe mill roll pass pick-up unit, it is characterized in that: comprise the horizontal main scale (2) for measuring roll pass axial length arranged with pilger pipe mill roll centerline axis parallel, the lengthwise centers of horizontal main scale (2) is set to zero graduation, and horizontal main scale (2) two ends are respectively arranged with and are slidably matched with horizontal main scale (2) and for the detent mechanism (1) of position level main scale;
The lengthwise centers of described horizontal main scale (2) also passes through bearing pin (4) hinged for measuring the rotating sliding rule (5) of roll pass radial dimension, the length direction of rotating sliding rule (5) is provided through the elongated slot of bearing pin;
Bearing pin (4) between described horizontal main scale (2) and rotating sliding rule (5) is also provided with the protractor (3) for measuring roll pass inclination angle that horizontal line and horizontal main scale be arranged in parallel, protractor (3) is fixedly connected on horizontal main scale;
Described detent mechanism (1) comprises and is arranged on the upper and slide block (11) be slidably matched with horizontal main scale of horizontal main scale (2), the top of slide block (11) is provided with the support claw (12) of " several " font, bottom and the roll barrel end face of support claw (12) both sides fit, and described support claw (12) are provided through support claw (12) top and are connected with slide block and for the screw rod (13) of adjusting slider height.
2. pilger pipe mill roll pass pick-up unit according to claim 1, is characterized in that: the both sides that described horizontal main scale (2) is positioned at bearing pin are respectively arranged with the vernier (6) being used to indicate roll pass axial length that to be slidably matched with horizontal main scale.
3. pilger pipe mill roll pass pick-up unit according to claim 1, it is characterized in that: the outer end of described bearing pin is provided with the rhombus pointer (9) being used to indicate roll pass inclination angle and roll pass radial dimension, the pointer of rhombus pointer (9) is vertical with rotating sliding rule (5) to be arranged, and the back side of rhombus pointer (9) is provided with for clamping rotating sliding rule (5) and can making the fastener that rotating sliding rule (5) slides along it.
4. pilger pipe mill roll pass pick-up unit according to claim 1, is characterized in that: the end face outside of described slide block is provided with the location side plate (7) for clamping roll barrel outer face.
5. the pilger pipe mill roll pass pick-up unit according to any one of Claims 1-4, it is characterized in that: the sideline, side of the upper elongated slot of described rotating sliding rule (5) overlaps with the width centreline of rotating sliding rule (5), one end that rotating sliding rule (5) contacts with roll pass is tip, and the end of tip is the zero graduation of rotating sliding rule.
6. pilger pipe mill roll pass detection method, is characterized in that the method completes the detection of roll pass by pilger pipe mill roll pass pick-up unit, specifically comprises the following steps:
The first step, measures roll basic data: measure body of roll outside diameter and barrel length; The body of roll cylindrical of pilger pipe mill roll to be detected divides angle subregion according to 36 grades, and marks the bus of R0 ~ R35;
Second step, mounting and adjusting pick-up unit is in roll barrel position: select a wherein bus, pilger pipe mill roll pick-up unit is placed on roll barrel, and the position adjusted on the body of roll of pick-up unit, every data in the pilger pipe mill roll pass cross section being this bus place of canonical measure with this bus;
3rd step, measures roll pass cross section each several part parameter value: the angle value β and the radius value R ' that measure middle part circular arc portion on roll pass cross section; Measure the hypotenuse angle θ of symmetria bilateralis oblique line portion on roll pass cross section; Measure the horizontal range L of roll pass both sides notch
k;
4th step, calculating error values: according to arc radius value R ', angle beta, the hypotenuse angle θ and notch horizontal range L of the 3rd pacing amount
k, and in conjunction with pilger pipe mill roll finished article design value, calculate normal direction surplus △ R and the radial slack △ Y at each position.
7. pilger pipe mill roll pass detection method according to claim 6, it is characterized in that: described pilger pipe mill roll pass pick-up unit comprises horizontal main scale (2), the lengthwise centers of horizontal main scale (2) is set to zero graduation, the both sides that horizontal main scale (2) is positioned at lengthwise centers are respectively arranged with a vernier (6), and horizontal main scale (2) two ends are respectively arranged with the detent mechanism (1) that to be slidably matched with horizontal main scale (2); The lengthwise centers of described horizontal main scale (2), also by hinge one rotating sliding rule (5), the length direction of rotating sliding rule (5) is provided through the elongated slot of bearing pin; Bearing pin between horizontal main scale (2) and rotating sliding rule (5) is also provided with protractor (3), protractor (3) is fixedly connected on horizontal main scale, and protractor round dot overlaps with the lengthwise centers of horizontal main scale; The outer end of described bearing pin is provided with rhombus pointer (9), and the pointer of rhombus pointer (9) is vertical with rotating sliding rule (5) to be arranged.
8. pilger pipe mill roll pass detection method according to claim 7, is characterized in that the concrete steps of the pick-up unit of mounting and adjusting described in second step in roll barrel position are:
First, detent mechanism is supported on body of roll cylindrical, and props up the radial position of roll cylindrical detection level main scale (2) by Steel Ruler, make horizontal main scale (2) parallel with roll bus;
Secondly, to roll barrel two end faces mobile positioning mechanism, adjusting the position of two verniers (6), simultaneously along roll mandrel to moving in parallel horizontal main scale (2), making two verniers (6) be symmetrically distributed in the both sides of horizontal main scale (2) center-zero;
Then, along body of roll cylindrical slip detection device, in the process that pick-up unit slides a week, when the center-zero of horizontal main scale (2) is positioned on the radial section in the roll pass center of circle in more than 2/3rds regions of 36 deciles, fastening detent mechanism, makes horizontal main scale be fixed on the bus at any pass place.
9. pilger pipe mill roll pass detection method according to claim 7, is characterized in that the concrete steps measuring roll pass cross section each several part parameter value described in the 3rd step are:
Measuring the middle part angle value β of circular arc portion and the process of radius value R ' on roll pass cross section is: rotate rotating sliding rule (5) around bearing pin, to move around rotating sliding rule (5) along the elongated slot of rotating sliding rule simultaneously, when the tip of rotating sliding rule (5) contacts with roll pass, read the arc radius value R ' of current circular arc different angles β according to the pointer on rhombus pointer (9);
On described measurement roll pass cross section, the process of the hypotenuse angle θ of symmetria bilateralis oblique line portion is: with a right-angle side laminating roll pass hypotenuse of right angle triangle, movable triangular plate and rotating sliding rule (5) simultaneously, the side of another right-angle side of set square and rotating sliding rule (5) is fitted, and now the angle value of read volume hornwork (3) is the hypotenuse angle θ of oblique line;
The horizontal range L of described measurement roll pass both sides notch
kprocess be: along horizontal main scale moving cursor (6), make two verniers (6) respectively with the notch of roll pass both sides in along fitting, read the Distance geometry between two verniers, be the horizontal range L of roll pass both sides notch
k.
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| CN117146684B (en) * | 2023-10-31 | 2024-03-01 | 天津中杰科技发展有限公司 | Trapezoidal seam cone angle detection device and detection method |
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| CN103383224A (en) | 2013-11-06 |
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