CN110567343A - Distance measuring method - Google Patents
Distance measuring method Download PDFInfo
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- CN110567343A CN110567343A CN201910924809.6A CN201910924809A CN110567343A CN 110567343 A CN110567343 A CN 110567343A CN 201910924809 A CN201910924809 A CN 201910924809A CN 110567343 A CN110567343 A CN 110567343A
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- distance
- plane
- measured
- measuring
- movable end
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a distance measuring method, which is used for measuring the distance from a hole with the center line of the hole parallel to the plane of the inner wall of a box body to the plane, converting the distance measurement into the measurement of the stroke of a movable end by measuring the stroke of the movable end, wherein the stroke can be obtained by accurately measuring by using a feeler gauge, and the measurement precision is improved. The device is suitable for predicting the size range of a measured element, and the center of the hole of the measured element is remotely measured relative to the plane of the inner wall of the shell of another measured element, so that the problem of inaccurate measurement data in the prior art is solved, and the condition that the large-size tubular inside micrometer needs n extension rods for length connection is avoided. The geometric shape of the inner cylindrical surface of the fixed end provides a line contact state with the measured element internally tangent, so that the measuring point position of the fixed end does not need to be found and determined, the operation is very convenient, the device has the characteristics of strong practicability and low cost, and the detection efficiency is improved.
Description
Technical Field
the invention belongs to the technical field of measurement, and particularly relates to a distance measurement method for measuring the distance between the central line of a hole in a box structural member and the plane of the inner wall of a box.
Background
In order to measure the distance between the center of a hole on a box type structural member and the plane of the inner wall of the box, the prior art roughly measures the distance by using a steel tape or a ruler; the precise measurement is carried out by means of a precise mandrel penetrating into the hole and then measuring by using a tubular inside micrometer. After measurement, the obtained value and the radius value of the measured part are subjected to summation operation, and the calculated sum is the numerical value of the distance. The position of a measured point externally tangent with the mandrel at the measuring end of the large-size inside micrometer is difficult to determine, so that the position of a contact point between the other end of the large-size inside micrometer and the measured plane is difficult to determine, and the measuring difficulty is high. When the distance to be measured is more than 1.5m, the measuring tape or the tubular inside micrometer has the problem of inaccurate measured data due to the fact that the position of the measured point of the element to be measured is difficult to determine. The invention aims to solve the problems and change the condition that the large-size tubular inside micrometer needs n extension rods for length connection.
Disclosure of Invention
The invention provides a distance measuring method, which solves the problem that the distance measuring difficulty of the central line of a hole on a box structural member relative to the plane of the inner wall of a box is high.
In order to solve the technical problem, the invention provides a distance measuring method for measuring the distance from a hole with the center line parallel to the plane of the inner wall of a box body to the plane, which is characterized by comprising the following steps:
S1, designing a distance measuring device, which comprises a fixed end 1, a movable end 3 and a middle rod 2, wherein the fixed end and the movable end are respectively fixed at two ends of the middle rod, the movable end 3 is in threaded connection with the middle rod and is shifted through a screw, and when the inner end surface of the movable end 3 is screwed and tightly attached to the end surface of the middle rod 2, the inner end surface is the initial position; according to the predicted distance range of the central line of the hole relative to the plane of the inner wall of the box bodyPresetting an initial value A0To be less than the minimum of the distance range;
S2, when measuring, the movable end 3 and the middle rod 2 are screwed together to make the close fit clearance 0, the length distance of the distance measuring device is A0；
S3, a precise mandrel matched with the inner cylindrical surface 4 of the fixed end 1 is arranged in the measured hole, the inner cylindrical surface 4 abuts against the outer cylindrical surface of the mandrel, the movable end 3 is gradually rotated to extend for a certain distance, meanwhile, the middle rod is rotated by taking the mandrel as the center until the spherical surface 5 of the movable end 3 abuts against the measured plane, namely, the minimum distance point position between the spherical surface 5 of the movable end 3 and the measured plane is found;
S4, measuring the gap delta A between the moving end 3 and the middle rod, and then calculating the delta A value and A0The sum of the values is the distance A between the center of the measured hole and the measured plane.
has the advantages that: the invention is used for measuring the distance between the central line of the hole on the box type structural member and the plane of the inner wall of the box body, and has the characteristic of accurate measurement. The device is mainly used for predicting the range of the measured dimension, and the center of the hole of the measured element is remotely measured relative to the plane of the inner wall of the shell of the other measured element. Simple structure, convenient to use has improved the detection precision, and the left inner cylinder face geometry of stiff end provides simultaneously with the line contact state of being surveyed the key element inscribe to need not to look for the measuring point position of confirming this end, the operation is very convenient, has the practicality, characteristics with low costs, has improved detection efficiency. The problem of the inaccurate measured data who uses prior art to exist is solved, the condition that jumbo size tubulose inside micrometer needs n extension rods to carry out length connection has been avoided.
Drawings
FIG. 1 is a schematic diagram of the measurement of the present invention;
Fig. 2 is a schematic structural diagram of the measuring apparatus.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.
the invention provides a distance measuring method for measuring the distance from a hole with the center line parallel to the plane of the inner wall of a box body to the plane, which comprises the following steps:
S1, design a distance measurement device, overall structure is slender pole package assembly, by stiff end 1, remove end 3, the intermediate lever 2 is constituteed, the stiff end is fixed respectively at the intermediate lever both ends with removing the end, remove end 3 and intermediate lever threaded connection, shift through the spiral along with the size of distance, adjust the position of removing end 3 and intermediate lever, the stroke delta A of its relative initial position can obtain with clearance gauge precision measurement, just so convert the measurement of distance into the measurement of the 3 strokes of removal end on this device.
when Δ a is equal to 0, the left end face of the moving end 3 is screwed and tightly attached to the right end face of the intermediate rod 2, and a is equal to a0A0 is a specific numerical value set at the time of designing a drawing; when the distance delta A is more than 0, the moving end 3 moves rightwards, the stroke delta A of the moving end 3 is equal to the distance delta A of the left end surface of the moving end 3 from the right end surface of the middle rod 2, the distance is accurately measured by a feeler gauge, and A is equal to A0+△A。
A0-initial value
delta A-increment, can be accurately measured
a-measured value;
When the distance from the hole with the center line parallel to the plane is measured, the distance is a predicted distance range due to the fact that the distance is long, and an actual distance value needs to be accurately measured; according to the predicted distance range of the hole central line relative to the inner wall plane of the box body, an initial value A is preset0To be less than the minimum of the distance range;
S2, when measuring, the moving end 3 and the middle rod 2 are first screwed to make the close fit gap 0, and the length distance expressed by the distance measuring device is A0；
s3, a precise mandrel matched with the inner cylindrical surface 4 of the fixed end 1 is arranged in the measured hole, the inner cylindrical surface 4 abuts against the outer cylindrical surface of the mandrel, the movable end 3 is gradually rotated to extend for a certain distance, meanwhile, the middle rod is rotated by taking the mandrel as the center until the spherical surface 5 of the movable end 3 abuts against the measured plane, namely, the minimum distance point position between the spherical surface 5 of the movable end 3 and the measured plane is found;
S4, measuring the gap delta A between the moving end 3 and the middle rod by a feeler gauge, and then calculating the delta A value and A0the sum of the values is the distance A between the center of the measured hole and the measured plane.
The precision of the feeler is the precision of the gap delta A value.
As shown in FIG. 2, the outer end of the fixed end 1 is an inner cylindrical surface 4, which forms a line contact with the outer cylindrical surface of the measured mandrel, and the inner end of the fixed end 1 is connected with one end of the middle rod 2 and is locked and fixed. The outer end of the moving end 3 is a spherical surface 5 and forms point contact with a measured plane, the inner end of the moving end 3 is connected with the other end of the middle rod 2 in a spiral mode, and end face attachment and separation can be achieved. The intermediate lever structure 2 is a rigid member that functions to support and connect the fixed end 1 and the movable end 3.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A distance measuring method is used for measuring the distance from a hole with the center line of the hole parallel to the plane of the inner wall of a box body to the plane, and is characterized by comprising the following steps:
s1, designing a distance measuring device, which comprises a fixed end 1, a movable end 3 and a middle rod 2, wherein the fixed end and the movable end are respectively fixed at two ends of the middle rod, the movable end 3 is in threaded connection with the middle rod and is shifted through a screw, and when the inner end surface of the movable end 3 is screwed and tightly attached to the end surface of the middle rod 2, the inner end surface is the initial position; according to the predicted distance range of the hole central line relative to the inner wall plane of the box body, an initial value A is preset0To be less than the minimum of the distance range;
S2, when measuring, the movable end 3 and the middle rod 2 are screwed together to make the close fit clearance 0, the length distance of the distance measuring device is A0；
S3, a precise mandrel matched with the inner cylindrical surface 4 of the fixed end 1 is arranged in the measured hole, the inner cylindrical surface 4 abuts against the outer cylindrical surface of the mandrel, the movable end 3 is gradually rotated to extend for a certain distance, meanwhile, the middle rod is rotated by taking the mandrel as the center until the spherical surface 5 of the movable end 3 abuts against the measured plane, namely, the minimum distance point position between the spherical surface 5 of the movable end 3 and the measured plane is found;
S4, measuring the gap delta A between the moving end 3 and the middle rod, and then calculating the delta A value and A0The sum of the values is the distance A between the center of the measured hole and the measured plane.
2. A distance measuring method according to claim 1, wherein the position of the moving end 3 and the intermediate lever is adjusted, and the stroke Δ a of the moving end with respect to the initial position is obtained by accurately measuring with a feeler.
3. A distance measuring method according to claim 1, wherein the outer end of the fixed end 1 is an inner cylindrical surface 4 which is in line contact with an outer cylindrical surface of the measured spindle.
4. A distance measuring method according to claim 3, wherein the outer end of the movable end 3 is a spherical surface, and is in point contact with the plane to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924809.6A CN110567343A (en) | 2019-09-27 | 2019-09-27 | Distance measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924809.6A CN110567343A (en) | 2019-09-27 | 2019-09-27 | Distance measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110567343A true CN110567343A (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910924809.6A Pending CN110567343A (en) | 2019-09-27 | 2019-09-27 | Distance measuring method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2705773Y (en) * | 2004-05-25 | 2005-06-22 | 焦作工学院 | Internal diameter measurer |
| CN201803665U (en) * | 2009-11-13 | 2011-04-20 | 杨洪举 | Sensitive luminous measuring rod |
| CN202853513U (en) * | 2012-08-31 | 2013-04-03 | 上海联影医疗科技有限公司 | Vernier caliper used for internal diameter measurement |
| CN109341477A (en) * | 2018-10-23 | 2019-02-15 | 蔚来汽车有限公司 | Measuring device |
| CN109405707A (en) * | 2018-11-15 | 2019-03-01 | 中国人民解放军第五七二工厂 | A kind of device with micrometer detection pipe sleeve seal line position |
-
2019
- 2019-09-27 CN CN201910924809.6A patent/CN110567343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2705773Y (en) * | 2004-05-25 | 2005-06-22 | 焦作工学院 | Internal diameter measurer |
| CN201803665U (en) * | 2009-11-13 | 2011-04-20 | 杨洪举 | Sensitive luminous measuring rod |
| CN202853513U (en) * | 2012-08-31 | 2013-04-03 | 上海联影医疗科技有限公司 | Vernier caliper used for internal diameter measurement |
| CN109341477A (en) * | 2018-10-23 | 2019-02-15 | 蔚来汽车有限公司 | Measuring device |
| CN109405707A (en) * | 2018-11-15 | 2019-03-01 | 中国人民解放军第五七二工厂 | A kind of device with micrometer detection pipe sleeve seal line position |
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Application publication date: 20191213 |