CN201548178U - Portable-type bend-angle measuring instrument for measuring bend angle - Google Patents
Portable-type bend-angle measuring instrument for measuring bend angle Download PDFInfo
- Publication number
- CN201548178U CN201548178U CN2009201743148U CN200920174314U CN201548178U CN 201548178 U CN201548178 U CN 201548178U CN 2009201743148 U CN2009201743148 U CN 2009201743148U CN 200920174314 U CN200920174314 U CN 200920174314U CN 201548178 U CN201548178 U CN 201548178U
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- angle
- dial gauge
- pedestal
- dial
- cross bar
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Abstract
The utility model relates to a portable-type bend-angle measuring instrument for measuring a bend angle, which is used for measuring an angle on the surface of a work piece, and comprises a substrate, a crossbar, a tightening screw, a first dial gauge and a second dial gauge, wherein the substrate is of a cylinder body, and cross section of the substrate is of a symmetric arc surface. The crossbar is fixed on the central line of the substrate, and the crossbar is provided with two dial gauges, i.e. the first dial gauge and the second dial gauge. The two dial gauges are vertical to the crossbar, and the plane on which the central line of the two dial gauges stay stays in the same plane with the central line of the substrate. The distance between the central line of the first dial gauge and the central line of the second dial gauge is 114 to 114.6 mm. The portable-type bend-angle measuring instrument has the advantages that: the bend angle of a straight-rod work piece can be measured. When the measuring instrument moves to measure a small bend angle, and when the two dial gauges stay on the edges of the bend angle, and the value of the two dial gauges is changed, the difference value of the reading of the two dial gauges presents in twice proportion relationship with the angle value.
Description
Technical field
The utility model relates to the field of measuring technique of surface of the work angle, and the survey instrument of the small bent angle of particularly a kind of workpiece is a kind of measurement straight-bar surface of the work bending angle measuring instrument.
Background technology
At present, the measurement of the small bent angle of straight-bar does not have the method for directly measuring at present.Particularly for production scene or large-scale workpiece, even measure also very difficult indirectly.
Current measuring methods is, the straight-bar work rest that will have small bent angle is on the v block of verifying bench, by the peak on rotational parts and the definite curved point of the horizontal mobile dial gauge position, again dial gauge is vertically moved a distance and find another high point of bending the some position, thereby by measuring difference and utilizing the calculating of trigonometric function to obtain the bending angle value.This method complex operation, labour intensity is big, and the bending angle measured value is reliable and stable inadequately simultaneously.
When petroleum industry is measured the angle of the curved housing of stearable assemly, generally be to bend the housing part frame on the v block of verifying bench with crane, artificial rotational parts and horizontal mobile dial gauge are determined the peak on the curved point of the curved housing position, again dial gauge is vertically moved a distance and use the same method and find the high point at another curved some position, by measuring difference and utilizing the calculating of trigonometric function to obtain curved housing angle value.This method efficient is low, and work is complicated, and labour intensity is big, and is difficult to finish surveying work at the oil drilling scene.
Summary of the invention
The purpose of this utility model is: a kind of portable bend measuring instrument of measuring bending angle is provided, and the camber of energy measurement straight-bar workpiece, and simple in structure, easy to operate.
The technical solution adopted in the utility model is: measure the portable bend measuring instrument of bending angle, comprise pedestal, cross bar, trip bolt, first dial gauge and second dial gauge, it is characterized in that: pedestal is a cylinder, and pedestal is that xsect is the cambered surface of symmetry.On the center line of pedestal, be fixed with a cross bar, be fixed with two dial gauges on the cross bar, be i.e. first dial gauge and second dial gauge.Two dial gauges are vertical with cross bar, and the plane at the center line place of two dial gauges and pedestal center line are in same plane.Distance between the first dial gauge center line and the second dial gauge center line is between 114～114.6 millimeters.
Describedly on the center line of pedestal, be fixed with cross bar, be on the center line of pedestal, fixed orifice to be arranged, screw is arranged on cross bar, screw passes the fixed orifice of pedestal, cross bar is fixed on the inside of pedestal cambered surface, also can be on the center line of pedestal fixing threaded hole to be arranged, porose on cross bar, screw passes the hole of cross bar, cross bar is fixed on the outside of pedestal.
Use the portable bend measuring instrument of measuring bending angle to measure, calculate the bending angle principle and the method for cylindrical work:
Measuring principle: consult Fig. 3.
Utilize acute angle trigonometric function formula:
The adjacent side of the opposite side ÷ ∠ α of tan α=∠ α
Utilize the isogonism theorem:
∠α＝∠β
Known a, b, L
: tan β=(a-b)/L
Utilize inverse trigonometric function, can draw the angle value of β, be i.e. the angle value of α.
The special case of utility model method:
When L ≈ 114.58mm,
a-b＝0.5mm，α＝β＝0.25°；
a-b＝1mm，α＝β＝0.5°；
a-b＝1.5mm，α＝β＝0.75°；
a-b＝2mm，α＝β＝1°；
a-b＝3mm，α＝β＝1.5°；
a-b＝4mm，α＝β＝2°；
……
That is: the adjacent side L with ∠ β is set at special value 114.58mm, the opposite side millimeter numerical value that can draw ∠ α by above-mentioned formula is 2 times of ∠ α number of degrees value, simultaneously the millimeter numerical value that increases of the opposite side of ∠ α also is 2 times of the number of degrees value that increases of ∠ α, opposite side as ∠ α is 1mm, ∠ α is 0.5 °, the opposite side of ∠ α increases 1mm, 0.5 ° of the also corresponding increase of ∠ α.
Measuring method: at first, with the horizontal segment that is placed on tested part of measuring instrument, promptly pedestal, first dial gauge and second dial gauge are placed on the horizontal segment of tested part; Adjust first dial gauge and second dial gauge, make the indicating value of two dial gauges be zero.Secondly, the translation measurement instrument to the bent angle section translation of tested part, makes first dial gauge and second dial gauge all be in the bent angle section and numerical value change is all arranged from the horizontal segment of tested part, and pedestal is at the tested part straight bar section; Then, rotate bend measuring instrument along the outer wall of tested part and find out peak on the bent angle section, when promptly two dial gauges showed maximal values, bend measuring instrument stopped operating.At last, observe the reading that two dial gauges show, converse the angle of tested straight-bar part bent angle; Conversion method is: 1/2nd of the difference of reading that first dial gauge and second dial gauge show is exactly the angle value of this straight-bar part bent angle.
The beneficial effects of the utility model: the utility model is measured the portable bend measuring instrument of bending angle, the camber of energy measurement cylinder straight-bar workpiece.When moving this measuring instrument small bent angle is measured, when two dial gauges all were in the bent angle limit and all numerical value change are arranged, the difference of two dial gauge readings became 2 multiple proportions example relation with the angle value of bent angle.
(1) practical, adopted dial gauge intuitively, can learn the number of degrees of workpiece bent angle by the reading on the dial gauge.
(2) portable bend measuring instrument of measurement bending angle can be used for the measurement of the curved housing of various different models, also can be used for helicoid hydraulic motor before going into the well the bending angle check and correction and to the measurement of adjustable curved housing, make curved housing can accurately measure the angle of bent angle and determine accurate position on the curved point of curved housing, improved measuring accuracy and efficiency of measurement in processing and when making marks.
Description of drawings
Fig. 1 is the right view of Fig. 2.
Fig. 2 is the portable bend measuring instrument structural representation that the utility model is measured bending angle.
Fig. 3 is a schematic diagram of the present utility model.
Fig. 4 is the synoptic diagram that the utility model is measured portable bend measuring instrument mileometer adjustment on the workpiece straight section of bending angle.
Fig. 5 is the synoptic diagram that the portable bend measuring instrument of the utility model measurement bending angle is measured on workpiece.
Among the figure, 1. pedestal, 2. cross bar, 3. trip bolt, 4. first dial gauge, 5. second dial gauge.
Embodiment
Embodiment 1: with a portable bend measuring instrument of measuring bending angle is example, and the utility model is described in further detail.
Consult Fig. 2.Measure the portable bend measuring instrument of bending angle, comprise pedestal 1, cross bar 2, trip bolt 3, first dial gauge 4 and second dial gauge 5.
Measuring process: consult Fig. 4.At first, with the horizontal segment that is placed on tested part of measuring instrument, promptly pedestal 1, first dial gauge 4 and second dial gauge 5 are placed on the horizontal segment of tested part; Adjust first dial gauge 4 and second dial gauge 5, make the indicating value of two dial gauges be zero.Consult Fig. 5.Secondly, the translation measurement instrument to the bent angle section translation of tested part, makes first dial gauge 4 and second dial gauge 5 all be in the bent angle section and numerical value change is all arranged from the horizontal segment of tested part, and pedestal 1 is at the tested part straight bar section.Then, rotate bend measuring instrument along the outer wall of tested part and find out peak on the bent angle section, when promptly two dial gauges showed maximal values, bend measuring instrument stopped operating.At last, observe the reading that two dial gauges show, first dial gauge, 4 readings are 0.56mm; The reading of second dial gauge 5 is 1.06mm.Converse the angle of tested straight-bar part bent angle, the difference of calculating two dial gauges in top is 0.5mm, and divided by 2, the bending angle that obtains tested part at last is 0.25 °
Embodiment 2: embodiment 2 with the difference of embodiment 1 is: porose on cross bar 2, screw passes the hole of cross bar 2, cross bar 2 is fixed on the outside of pedestal 1.
Claims (3)
1. portable bend measuring instrument of measuring bending angle, comprise pedestal (1), cross bar (2), trip bolt (3), first dial gauge (4) and second dial gauge (5), it is characterized in that: pedestal (1) is a cylinder, pedestal (1) is that xsect is the cambered surface of symmetry, on the center line of pedestal (1), be fixed with a cross bar (2), be fixed with two dial gauges on the cross bar (2), i.e. first dial gauge (4) and second dial gauge (5), two dial gauges are vertical with cross bar (2), the plane at the center line place of two dial gauges and pedestal (1) center line are in same plane, and the distance between first dial gauge (4) center line and second dial gauge (5) center line is between 114～114.6 millimeters.
2. the portable bend measuring instrument of measurement bending angle according to claim 1, it is characterized in that: the described cross bar (2) that on the center line of pedestal (1), is fixed with, be on the center line of pedestal (1), fixed orifice to be arranged, on cross bar (2), screw is arranged, screw passes the fixed orifice of pedestal (1), cross bar (2) is fixed on the inside of pedestal (1) cambered surface.
3. the portable bend measuring instrument of measurement bending angle according to claim 1, it is characterized in that: the described cross bar (2) that on the center line of pedestal (1), is fixed with, be on the center line of pedestal (1), fixing threaded hole to be arranged, go up porose at cross bar (2), screw passes the hole of cross bar (2), cross bar (2) is fixed on the outside of pedestal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201743148U CN201548178U (en) | 2009-12-04 | 2009-12-04 | Portable-type bend-angle measuring instrument for measuring bend angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201743148U CN201548178U (en) | 2009-12-04 | 2009-12-04 | Portable-type bend-angle measuring instrument for measuring bend angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548178U true CN201548178U (en) | 2010-08-11 |
Family
ID=42603352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201743148U Expired - Lifetime CN201548178U (en) | 2009-12-04 | 2009-12-04 | Portable-type bend-angle measuring instrument for measuring bend angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701787B (en) * | 2009-12-04 | 2012-02-29 | 中国石油天然气集团公司 | Portable bend measuring instrument for measuring bending angle |
-
2009
- 2009-12-04 CN CN2009201743148U patent/CN201548178U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701787B (en) * | 2009-12-04 | 2012-02-29 | 中国石油天然气集团公司 | Portable bend measuring instrument for measuring bending angle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |
|
| CX01 | Expiry of patent term |