CN102042790A - Phi rule device of large-diameter measurement by datum rule method and measurement method - Google Patents
Phi rule device of large-diameter measurement by datum rule method and measurement method Download PDFInfo
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Abstract
The invention discloses a phi rule device of large-diameter measurement by a datum rule method and a measurement method, which belongs to the field of heavy-load large-size diameter measurement and relates to a high-precision measurement device and a method for measuring a large-diameter workpiece. The device comprises an initial measurement unit and a series of independent datum measurement units, wherein each measurement unit comprises a left cuboid magnetism positioning element, a right cuboid magnetism positioning element and an invar measurement belt. The measurement method comprises the following steps of: mounting the initial measurement unit A on a measured diameter part of a measured circumference surface; affirming that the left positioning elements and the right positioning elements on the initial measurement unit are in contact with the measured circumference surface; and guaranteeing that the positioning blocks are horizontal through a level gauge on a rectangular magnet, wherein the measurement belts are tensioned to cling to the measured element. The invention has the characteristics of high precision, low cost, simple and convenient operation, portability, and the like and also has good popularization and application values in the occasions of heavy-load large-size diameter measurement.
Description
Technical field
The present invention is a kind of large-diameter high-accuracy measurement mechanism and method of being used for, and belongs to heavily loaded large scale diameter fields of measurement.
Technical background
The big machinery equipment, comprise large-scale generating set, heavy-duty machinery, large ship, tun and space equipment etc., spread all over every field such as electric power, Aero-Space, boats and ships, mine, metallurgy, chemical industry, oil and traffic, therefore the lifeblood that relates to national economy be significant.Large-scale main shaft, large size bearing, large gear, tun, and Large Piston etc. is to form the part of the important or even core of big machinery equipment, their processing all needs the measurement of high-precision major diameter and even diameters.The popular feature of factory's large diameter measurement is that measuring appliance often volume is big, Heavy Weight at present.Therefore, on-the-spot fitting operation difficulty is demarcated complexity, and is yielding, the cost height, and also measuring accuracy also is difficult to satisfy technical requirement.For example, most factories adopt π chi methods to carry out large diameter measurement, promptly with tape around one week of large-diameter workpiece, measure circumferential length, promptly get major diameter d divided by π again.Yet this method error is very big: the first, locate inaccurately, and to measure institute and enclose the xsect that the cross section is difficult to guarantee to be perpendicular to spool, measurement result is bigger than normal; The second, reading accuracy is very low, when the merge point reading, is difficult to also guarantee that π chi head and tail well links together, and can cause size bigger than normal; The 3rd, temperature is very big to the measuring accuracy influence, and temperature variation is big, and the π chi of common material is owing to expand with heat and contract with cold, and long π chi will produce bigger measuring error; The 4th, measuring operation is difficult to guarantee.For example, ergometry is difficult to guarantee uniformity during measurement, can not guarantee that the π chi is close to workpiece, cause the diameter value of surveying bigger than normal, the finished surface pollutant make equally to survey diameter value bigger than normal.
Summary of the invention
The technical barrier that the present invention will solve is the shortcoming that overcomes prior art, invents a kind of station meter method large diameter measurement π chi device of putting along tested circumference that is used for the measurement of large scale diameter.Adopt this measurement device major diameter to have a series of characteristics: (1) is simple in structure, volume is little, and is portable, easy and simple to handle; (2) cost is low; (3) measuring accuracy height, temperature influence hardly; (4) efficiency of measurement height.
The technical solution used in the present invention is a kind of station meter method large diameter measurement π chi device and measuring method.This device is made up of initial measurement unit A and a series of separate reference measurement unit B, C, D, E, F, G, H, I, J, K, L.Initial measurement unit A total length is 1m, be provided with level meter A2 and closed-loop dimensional measurement parts, wherein closed-loop dimensional measurement parts are by gib screw A3, slide calliper rule fixed mount A4, A4 ', electronic cursor slide calliper rule A5, closed-loop is measured band A6, digital display screen A7, moving slider A8, auto-tensioning rope A9 forms.The reference measurement unit by about two magnetic setting elements, an invar measure band and form, its length has four kinds: 1 meter, 0.5 rice, 0.25 rice, 0.125 rice, wherein the length of reference measurement unit B, C, D, E, F, G, H, I is 1 meter, and the length of reference measurement unit J is 0.5 meter, the length of reference measurement unit K is 0.25 meter, and the length of reference measurement unit L is 0.125 meter.Can get this covering device can to measure the diameter maximal value be 3.145 meters through calculating.The setting element of measuring unit is a rectangular parallelepiped magnet, measures band and is made by invar.Initial measurement unit A needs at first to be placed in measuring process on the workpiece, and its left magnetic setting element A1 goes up a level meter A2 is installed, and guarantees that measuring sensor is eliminated error on the same cross section of tested circumference in measurement; There is a trapezoidal locating slot a12 its right magnetic setting element A12 right side, so that next reference measurement unit connects the location.There is trapezoidal locating piece b1 the left side of the left magnetic setting element B1 of reference measurement unit B, is convenient to cooperate the location with the trapezoidal locating slot a12 of the right magnetic setting element A12 right side of initial measurement unit A.When measuring major diameter, successively each measuring unit is installed on the tested circumference, up to remaining curtailment till accommodating 0.125 meter reference measurement unit.Measure the distance between initial measurement unit A and last the reference measurement unit, promptly seal size, can calculate the diameter of tested circumference according to geometric relationship.
The present invention has following beneficial effect: 1) change greatly for a short time, will be converted into measurement to closed-loop to large-sized measurement, the precision of measurement is higher; 2) this device has level meter, locating piece, so accurate positioning and is measured and to be had certain width, can make like this and measure institute and enclose the xsect of cross section perpendicular to axle, thus the raising measuring accuracy; 3) this device has special sealing dimensional measurement parts, and its precision can reach 0.02mm, and can directly show last diameter dimension, and convenient reading is reliably quick; 4) be not subjected to Temperature Influence basically, this measurement device unit adopts invar, and the thermal expansivity of invar approaches 0, has eliminated Temperature Influence like this, has guaranteed measuring accuracy; 5) this device low cost of manufacture has very high promotional value in like product.
Description of drawings:
Fig. 1 is the large diameter measuring principle synoptic diagram of this measurement device, wherein: 1-measured workpiece, A-initial measurement unit A, B-reference measurement unit B, C-reference measurement unit C, D-reference measurement cells D, E-reference measurement unit E, F-reference measurement unit F, G-reference measurement unit G, H-reference measurement unit H, I-reference measurement unit I, J-reference measurement unit J, K-reference measurement unit K, L-reference measurement unit L.
Fig. 2 and Fig. 3 are the structure diagrams of initial measurement unit A, and Fig. 3 is the vertical view of Fig. 2, wherein: A1-magnetic left side setting element, the A2-level meter, A3-closed-loop parts gib screw, A4, A4 '-slide calliper rule fixed mount, A5-electronic cursor slide calliper rule, the A6-closed-loop is measured band, A7-digital display screen, the A8-moving slider, A9-auto-tensioning rope, the A10-invar is measured band, and A11-measures the band gib screw, the right magnetic setting element of A12-, the trapezoidal locating slot of a12-.
Fig. 5 and Fig. 4 are the structure diagrams of station meter measuring unit (B, C, D, E, F, G, H, I, J, K, L), Fig. 5 is the horizontal cross of Fig. 4, wherein: B1-left side magnetic setting element, the trapezoidal locating piece of b1-, B2-measures the band gib screw, the B3-invar is measured band, the right magnetic setting element of B4-, the trapezoidal locating slot of b4-.
Embodiment:
Describe concrete enforcement of the present invention in detail with technical scheme in conjunction with the accompanying drawings.Station meter method large diameter measurement π chi of the present invention is made up of initial measurement unit A and a series of separate reference measurement unit B, C, D, E, F, G, H, I, J, K, L.
As shown in Figure 2, the A measuring unit is that the invar of 40mm level meter A2 and closed-loop measurement component (A3, A4, A4 ', A5, A6, A7, A8, A9) that to measure band A10, left magnetic setting element A1, right magnetic setting element A12, a length be 20mm are formed by a thickness for the 1mm width.Measuring unit is guaranteed by level meter on perpendicular to the cross section on the circle central axis of measured workpiece.The long 60mm of left side magnetic setting element A1, wide 30mm, high 40mm, there is wide 15mm in portion within it, highly is that the closed-loop of 1mm is measured the tape channel.The long 60mm of right magnetic setting element A12, wide 15mm, high 40mm have trapezoidal locating slot a12 in its right side, are used for cooperating with B measuring unit location.The main material of setting element is Fe
3O
4, having certain magnetic, setting element just can be adsorbed on the measured workpiece like this, applies certain power and makes the accuracy of measuring unit tensioning to guarantee to measure, and avoids measuring band and is not close to workpiece and causes measured value bigger than normal.The connection of adjacent two measuring units was finished by trapezoidal locating slot and cooperating of trapezoidal locating piece.The closed-loop measurement component is by gib screw A3, slide calliper rule fixed mount A4, A4 ', and electronic cursor slide calliper rule A5, closed-loop is measured band A6, digital display screen A7, moving slider A8, auto-tensioning rope A9 forms.Gib screw A3 is used for fixing the closed-loop measurement component on left Magnetic Measurement unit A1.Slide calliper rule fixed mount A4, A4 ' are used for fixing electronic cursor slide calliper rule A5.Closed-loop is measured the wide 15mm of band A6, thick 1mm, terminal and moving slider A8 is fixed together, can drive moving slider A8 moves, and moving slider A8 links together with the kind of calliper end, so just can drive the kind of calliper end moves, measure with overhanging size thereby read, i.e. the closed-loop size.Auto-tensioning rope A9 and sliding plunger link together, and can make to measure to be with under the effect of tension part to be in tensioned state all the time, improve measuring accuracy.Electronic cursor slide calliper rule A5 is non-to be same as existing electronic caliper on the market, its digital display screen A7 can after the size sum of input measurement unit, directly demonstrate after built-in single-chip microcomputer calculates diameter dimension, precision can reach 0.02mm.
As shown in Figure 3, B station meter measuring unit is that the invar of 40mm is measured band B3, left magnetic setting element B1, right magnetic setting element B4 and gib screw B2 and formed by a thickness for the 1mm width.Left side magnetic setting element B1 long 60mm, wide 15mm, high 40mm has the trapezoidal locating piece b1 that matches with locating slot on the right magnetic setting element A12 in its left side.The long 60mm of right magnetic setting element B4, wide 15mm, high 40mm, the trapezoidal locating slot b4 that has the locating piece on the left magnetic setting element with the C measuring unit to match in its right side.Length from the left side of left magnetic setting element B1 to the right side of right magnetic setting element B4 is 1m, as datum length.The structure of C, D, E, F, G, H, I, J, K, L measuring unit is the same with the B measuring unit, wherein C, D, E, F, G, H, I measuring unit datum length are 1m, J measuring unit datum length is 0.5m, K measuring unit datum length is 0.25m, L measuring unit datum length is 0.125m, and the right side of the right magnetic setting element of L measuring unit does not have trapezoidal locating slot.
General heavily loaded large-sized parameter is diameter dimension 1.5m-3.0m, weight 200t-400t.Embodiment: measure the workpiece that diameter is 3m, it is 9.42m that estimation can get its circumference, and the measuring unit that then should 9 length to be installed earlier be 1m is respectively A, B, C, D, E, F, G, H, I measuring unit; Then installation length is the reference measurement unit K of 0.25m; Last reference for installation length is 0.125 reference measurement unit L, and then at this moment last closed-loop size can be measured by the closed-loop measurement component on the initial measurement unit A less than 0.125m.Should follow the descending principle of size when putting measuring unit, size to the last is the sealing size less than 125mm.Concrete operations step during measurement is as follows:
1) initial measurement unit A is installed in measured circle perimeter surface measured diameter position, confirm that the left magnetic setting element A1 on the initial measurement unit A contacts with the measured circle perimeter surface with right magnetic setting element A12, and guarantee the locating piece level by the level meter on the rectangle magnet, and then guarantee the accuracy of measurement.
2) give the certain pulling force of initial measurement unit A with hand, guarantee to measure the band tensioning, be close to measured workpiece.
3) the reference measurement unit B is installed in measured circle perimeter surface measured diameter position, trapezoidal locating slot a12 on the right magnetic setting element A12 of trapezoidal locating piece b on its left magnetic setting element B1 1 and initial measurement unit A is closely coupled together, give the certain pulling force of B, guarantee measuring unit B tensioning and be close to workpiece, guarantee the accuracy of measuring.
4) set by step 3) described method repeats to put the length measuring unit identical with measuring unit B, till to the last the distance between the measuring unit of an installation and the initial measurement unit is not enough to put down another length and is 1 meter measuring unit.
5) getting length is 0.5 meter J measuring unit, set by step 3) described method is installed in it on workpiece.If seal size greater than 0.25 meter this moment, then continue to install and measure unit K and L.If the sealing size then directly installs and measures unit L less than 0.25 meter and gets final product.So just can make last sealing size smaller or equal to 0.125 meter.
6) adopt above-mentioned steps to install after each measuring unit, form the distance between initial measurement unit and last measuring unit, promptly final sealing size.This size is measured by the closed-loop measurement component in the A measuring unit, and these parts are to be converted by the electronic cursor slide calliper rule.These parts are formed by measuring band A6, moving slider A8, slide calliper rule A5 and electronic display A7.At the front end of measuring band square locating piece is arranged, have magnetic, be used for location with last measuring unit.Pulling is measured band and is made its good location, and this device energy auto-tensioning can guarantee to measure band like this and be close to surface of the work, thereby improve measuring accuracy.During reading, only need the size sum of measuring unit of all installations of input after these parts will in display screen, show the tested circumference diameter dimension that the process single-chip microcomputer calculates automatically.Measuring process finishes.
Station meter method large diameter measurement π chi of the present invention because have the precision height, cost is low, easy and simple to handle and characteristics such as portability and have good promotional value and using value in these occasions.
Claims (2)
1. station meter method large diameter measurement π chi device and measuring method is characterized in that this device is made up of initial measurement unit (A) and a series of separate reference measurement unit (B, C, D, E, F, G, H, I, J, K, L); Initial measurement unit (A) is provided with level meter A2 and closed-loop dimensional measurement parts, wherein the closed-loop measurement component is by gib screw (A3), slide calliper rule fixed mount (A4, A4 '), electronic cursor slide calliper rule (A5), closed-loop is measured band (A6), digital display screen (A7), moving slider (A8), auto-tensioning rope (A9) is formed; The reference measurement unit by about two rectangular parallelepiped magnetic setting elements, an invar measure band and form, its length has four kinds: 1 meter, 0.5 rice, 0.25 rice, 0.125 rice, wherein the length of measuring unit (A, B, C, D, E, F, G, H, I) is 1 meter, and the length of measuring unit (J) is 0.5 meter, the length of measuring unit (K) is 0.25 meter, and the length of measuring unit (L) is 0.125 meter; The measurable diameter maximal value of this covering device is 3.145 meters.
2. station meter method large diameter measurement π chi device, the measuring method that it adopts is characterized in that, adopts the station meter method to measure large-diameter workpiece, its step is as follows:
1) initial measurement unit (A) is installed in measured circle perimeter surface measured diameter position, affirmation initial measurement unit (A) is gone up left magnetic setting element (A1) and is contacted with the measured circle perimeter surface with right magnetic setting element (A12), and guarantee the locating piece level by the level meter (A2) on the rectangle magnet, and then guarantee the accuracy of measurement;
2) give the certain pulling force in initial measurement unit (A) with hand, guarantee to measure the band tensioning, be close to measured element;
3) reference measurement unit (B) is installed in measured circle perimeter surface measured diameter position, its tongue and groove are closely coupled together, give (B) certain pulling force, guarantee reference measurement unit (B) tensioning and be close to workpiece, guarantee the accuracy of measuring;
4) set by step 3) described method repeats to be installed in length and the identical measuring unit in reference measurement unit (B), till the reference measurement unit of an installation to the last and the distance between the initial measurement unit are not enough to put down another length and are 1 meter reference measurement unit;
5) getting length is 0.5 meter reference measurement unit (J), set by step 3) described method is installed in it on workpiece; If seal size greater than 0.25 meter this moment, then continue reference for installation measuring unit (K) and (L); If the sealing size gets final product less than 0.25 meter then direct reference for installation measuring unit (L); So just can make last sealing size smaller or equal to 0.125 meter;
6) adopt above-mentioned steps to install after each measuring unit, form the distance between initial measurement unit (A) and last the reference measurement unit, promptly final sealing size; This size is measured by the closed-loop measurement component in initial measurement unit (A); At its front end of measuring band (A6) square locating piece is arranged, have magnetic, be used for the location with last measuring unit, pulling is measured band and is made its good location; After installing, manually import the size sum of measuring unit of all installations after, can in display screen, show the tested circumference diameter dimension that calculates through single-chip microcomputer automatically, measurement finishes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010522099 CN102042790B (en) | 2010-10-21 | 2010-10-21 | Phi rule device of large-diameter measurement by datum rule method and measurement method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010522099 CN102042790B (en) | 2010-10-21 | 2010-10-21 | Phi rule device of large-diameter measurement by datum rule method and measurement method |
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| CN102042790A true CN102042790A (en) | 2011-05-04 |
| CN102042790B CN102042790B (en) | 2013-04-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2736561C1 (en) * | 2020-03-05 | 2020-11-18 | Акционерное общество "Интер РАО - Электрогенерация" | Device for periodical monitoring of change of geometrical dimensions of pipeline section |
| CN113400096A (en) * | 2021-07-19 | 2021-09-17 | 江苏中车电机有限公司 | Measuring method for outer diameter machining of large motor stator core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089907A (en) * | 1996-09-20 | 1998-04-10 | Toshiba Corp | Measuring device of inner diameter |
| US6330753B1 (en) * | 1996-10-03 | 2001-12-18 | Southeast University | Gauge for measuring large diameter |
| CN101101198A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院长春光学精密机械与物理研究所 | Photo-electric type major diameter measuring apparatus |
| CN201093986Y (en) * | 2007-09-29 | 2008-07-30 | 赵霞 | Pi ruler spacing magnetic seat |
| CN101706261A (en) * | 2009-12-11 | 2010-05-12 | 湖南科技大学 | Device for measuring diameter of large shaft working piece by non-contact-type online measurement |
-
2010
- 2010-10-21 CN CN 201010522099 patent/CN102042790B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089907A (en) * | 1996-09-20 | 1998-04-10 | Toshiba Corp | Measuring device of inner diameter |
| US6330753B1 (en) * | 1996-10-03 | 2001-12-18 | Southeast University | Gauge for measuring large diameter |
| CN101101198A (en) * | 2006-07-07 | 2008-01-09 | 中国科学院长春光学精密机械与物理研究所 | Photo-electric type major diameter measuring apparatus |
| CN201093986Y (en) * | 2007-09-29 | 2008-07-30 | 赵霞 | Pi ruler spacing magnetic seat |
| CN101706261A (en) * | 2009-12-11 | 2010-05-12 | 湖南科技大学 | Device for measuring diameter of large shaft working piece by non-contact-type online measurement |
Non-Patent Citations (2)
| Title |
|---|
| 《仪器仪表学报》 20001231 杨宏宇等 高精度大直径测量的新方法研究与实现 597-600，603 1-2 第21卷, 第6期 * |
| 《应用科学学报》 20050331 金施群等 大轴直径的高精度多滚轮法测量 200-203 1-2 第23卷, 第2期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2736561C1 (en) * | 2020-03-05 | 2020-11-18 | Акционерное общество "Интер РАО - Электрогенерация" | Device for periodical monitoring of change of geometrical dimensions of pipeline section |
| CN113400096A (en) * | 2021-07-19 | 2021-09-17 | 江苏中车电机有限公司 | Measuring method for outer diameter machining of large motor stator core |
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