CN103727867B - Concentricity detection device and method - Google Patents
Concentricity detection device and method Download PDFInfo
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- CN103727867B CN103727867B CN201310752086.9A CN201310752086A CN103727867B CN 103727867 B CN103727867 B CN 103727867B CN 201310752086 A CN201310752086 A CN 201310752086A CN 103727867 B CN103727867 B CN 103727867B
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to a concentricity detection device and method. The concentricity detection device comprises a first supporting block, a second supporting block, a measurement rod, a linear guide rail and a dial indicator, wherein the first supporting block is located at the left end of a measurement platform and used for fixing and supporting the measurement rod and adjusting balance of the measurement rod, the second supporting block is located at the right end of the measurement platform and used for installation of a dial indicator base, the measurement rod is arranged between the first supporting block and the second supporting block and used for indirectly measuring the concentricity of pipes, the linear guide rail is located in the middle of the measurement platform and used for adjusting displacement of the first supporting block and displacement of the second supporting block, and the dial indicator is located at the left end of the measurement rod and used for data reading of the concentricity of central holes of the pipes. By means of the concentricity detection device, pipe concentricity direct measurement is converted into indirect measurement, and therefore the concentricity of deep small holes of the pipes can be effectively detected.
Description
Technical Field
The invention relates to the field of pipe detection, in particular to a device and a method for detecting concentricity of a pipe.
Background
In industrial processes, the machining of cylindrical workpieces is often involved, including circular through-holes. In the precise machining occasion, people have very high requirements on the concentricity of the inner hole of the workpiece, and the machined workpiece needs to be detected and classified after the workpiece is machined. At present, the concentricity of the circular hole is detected by a plurality of means, such as instruments such as a dial indicator, a three-coordinate measuring machine and the like. However, when these detection devices detect the concentricity of the central hole of the pipe, especially for the case of deep holes and small holes, the concentricity of the central hole cannot be obtained because instruments such as dial indicators cannot go deep into the central hole for direct measurement.
Disclosure of Invention
The invention aims to solve the problems and provides a device and a method for detecting the concentricity of a deep small hole of a pipe.
In order to achieve the above object, the present invention provides a concentricity detection apparatus, comprising:
the measuring station erects on the base for measure and fix the concentricity of tubular product on the material holds in the palm, the measuring station includes:
the first supporting block is positioned at the left end of the measuring table and used for fixing, supporting and balancing the measuring rod;
the second supporting block is positioned at the right end of the measuring table and is provided with a gauge stand;
the measuring rod is arranged on the first supporting block and the second supporting block and is used for indirectly measuring the concentricity of the pipe;
the linear guide rail is positioned in the middle of the measuring table and used for adjusting the displacement of the first supporting block and the second supporting block;
the dial indicator is positioned at the left end of the measuring rod and used for reading the concentricity data of the central hole of the pipe;
and the jacking adjusting block is used for adjusting and pressing the supporting position of the measuring rod.
Preferably, the device further comprises a material support, which is erected on the base and used for placing and positioning the position of the pipe, wherein the material support comprises:
the positioning block is used for fixing the supporting wheel and determining the position of the pipe at the left end of the material support;
the positioning bolt is positioned on the positioning block, adopts a T-shaped bolt and is used for fixing the positioning block;
and the riding wheel is positioned at the right end of the positioning block and used for rotating the pipe.
Preferably, the device further comprises a base which is positioned below the device and used for placing the material support and the measuring table.
Preferably, the device further comprises a dial gauge stand for clamping the dial gauge.
Preferably, the device further comprises a T-shaped slot.
Preferably, the device further comprises a steel plate ruler for reading the position of the measurement.
Preferably, the device further comprises an adjustment link.
Preferably, the device further comprises a measuring head located at one end of the measuring rod.
A concentricity detection method is characterized by comprising the following steps:
adjusting a positioning bolt according to the length of the pipe to determine the position of the material support;
the distance between the measuring head and the center of the first supporting block is equal to the distance between the dial gauge and the center of the first supporting block by adjusting the jacking adjusting block and the adjusting connecting rod;
adjusting the length of the measuring head to enable the measuring head to tightly press the inner diameter of the pipe, and adjusting the dial indicator to a zero position;
manually rotating the pipe, and reading data of a dial indicator;
and pushing the first supporting block and the second supporting block to move on the linear guide rail, reading the position of a measuring point through a steel plate ruler, and then selecting the pipe again for measurement for the required measuring position.
The invention has the following beneficial effects: the concentricity detection device and method provided by the invention convert the direct measurement of the concentricity of the pipe into indirect measurement, and can be effectively used for detecting the concentricity of the deep small hole of the pipe.
Drawings
FIG. 1A is a schematic top view of a concentricity testing apparatus according to the present invention;
FIG. 1B is a schematic front view of the concentricity testing apparatus of the present invention;
FIG. 2 is a flow chart of a method for detecting concentricity of a pipe according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Fig. 1A and 1B are schematic diagrams of a top view and a front view of a tube concentricity detection apparatus in an embodiment of the invention.
As shown in fig. 1A and 1B, the concentricity detection apparatus includes a base 101, a positioning block 102, a supporting roller 103, a measuring rod 104, a supporting block 105, a linear guide rail 106, a supporting block 107, a micrometer 108, a steel plate gauge 109, a gauge stand 110, a jacking adjustment block 111, an adjustment link 112, a measuring head 113, a positioning bolt 114, and a T-shaped groove 115.
Wherein, base 101 is located the device under for place the material support and reach the measuring desk.
The measuring table is located above the base 101 and comprises a supporting block 105, a supporting block 107, a measuring rod 104, a linear guide rail 106, a steel plate ruler 109, a dial indicator 108, a jacking adjusting block 111 and a gauge stand 110. The support block 105 is used for fixing, supporting and balancing the measuring rod. The support block 107 is used for mounting a watch seat. The measuring rod 104 is used for indirectly measuring the concentricity of the central hole of the pipe. The linear guide 106 is used for displacement adjustment of the support block 105. The steel plate ruler 109 is used for reading the measurement position. And the dial indicator 108 is arranged at the other end of the measuring rod and is used for reading the concentricity data of the central hole. And the jacking adjusting block 111 is used for adjusting and pressing the supporting position of the measuring rod. The gauge stand 110 is used to clamp the dial gauge.
After the pipe is placed on the material support, the distance between the measuring head 113 and the center of the supporting block 105 is equal to the distance between the measuring point of the dial indicator 108 and the center of the supporting block 105 by adjusting the jacking adjusting block 111 and the adjusting connecting rod 112. The length of the measuring head 113 is adjusted to ensure that the measuring head compresses the inner diameter of the pipe, and then the dial indicator 108 is adjusted to a zero position. The pipe is manually rotated, the data of the dial indicator 108 is read, the supporting block 105 and the supporting block 107 are pushed to move on the linear guide rail 106, and the position of the measuring point is read through the steel plate ruler 109, so that the measurement of the required measuring position is realized.
The material support is located at the upper left of the base 101 and comprises a positioning block 102, a positioning bolt 114 and a support wheel 103. The positioning block is used for fixing the riding wheel 103 and determining the placing position of the pipe. The positioning bolt is a T-shaped bolt, the head of the T-shaped bolt is placed in a T-shaped groove of a base of the detection device, and the positioning bolt 114 is screwed to fix the positioning block. The riding wheel 103 is used for realizing the rotation of the pipe. The material holds in the palm is used for placing and location tubular product position, and is used for the rotation of tubular product.
FIG. 2 is a flow chart of a method for detecting concentricity of a pipe according to an embodiment of the present invention.
As shown in fig. 2, in step 201, the positioning bolt is adjusted according to the length of the pipe to determine the position of the material holder.
In the next step 202, the distance between the measuring head and the center of the first supporting block is equal to the distance between the dial indicator and the center of the first supporting block by adjusting the jacking adjusting block and the adjusting connecting rod. By using the property of congruent triangles, namely: the displacements of points with equal distances from the supporting point (the center of the first supporting block) on both sides are equal, and the direct measurement is changed into indirect measurement.
In a subsequent step 203, the length of the measuring head is adjusted to press the measuring head against the inner diameter of the pipe, and the dial gauge is adjusted to a zero position. In the embodiment, when the concentricity of the central hole of the pipe is measured, the dial indicator is reset to zero for accurate measurement.
In a subsequent step 204, the tubing is manually rotated and the dial gauge data is read. In the embodiment, the dial indicator is used for reading the absolute value of the displacement of the measuring head, so that the concentricity measuring instrument is used for measuring the concentricity of the deep and small center holes.
In the final step 204, the first support block and the second support block are pushed to move on the linear guide rail, the position of the measurement point is read through the steel plate ruler, and then the pipe is selected again for measurement, so that the measurement position is required to be measured.
In summary, the concentricity detection device provided by the method adopts the measuring rod for measurement, one end of the measuring rod is provided with the measuring head, the middle part of the measuring rod is supported by the supporting block, and the other side of the measuring rod is provided with the dial indicator at the position symmetrical to the measuring head. And the distance between the measuring head and the support point is equal to the distance between the dial gauge needle and the support point. Utilizing the congruent triangle property: the displacement of the points with equal distance from the supporting point on both sides is equal. The direct measurement is changed into indirect measurement, the pipe is rotated, the measuring head is adjusted to enable the measuring head to be tightly pressed with the inner diameter of the pipe, and the absolute value of the displacement of the measuring head is read by a dial indicator, so that the concentricity measurement of the deep and small center holes is realized. The concentricity detection device provided by the invention can be used for effectively measuring the concentricity of the small deep hole of the pipe.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A concentricity detection apparatus, comprising:
a material support and a measuring table; wherein,
the material holds in the palm erects on the base for place and fix a position tubular product position, the material holds in the palm and includes:
the positioning block is positioned at the left end of the material support and used for fixing the support wheel and determining the position for placing the pipe;
the positioning bolt is positioned on the positioning block, adopts a T-shaped bolt and is used for fixing the positioning block;
the riding wheel is positioned at the right end of the positioning block and used for rotating the pipe; and the number of the first and second groups,
the survey table erects on the base for measure and fix the concentricity of tubular product on the material holds in the palm, the survey table includes:
the first supporting block is positioned at the left end of the measuring table and used for fixing, supporting and balancing the measuring rod;
the second supporting block is positioned at the right end of the measuring table and is provided with a gauge stand;
the measuring rod is arranged on the first supporting block and the second supporting block and is used for indirectly measuring the concentricity of the pipe;
the linear guide rail is positioned in the middle of the measuring table and used for adjusting the displacement of the first supporting block and the second supporting block;
the dial indicator is positioned at the left end of the measuring rod and used for reading the concentricity data of the central hole of the pipe;
and the jacking adjusting block is used for adjusting and pressing the supporting position of the measuring rod.
2. The concentricity testing apparatus of claim 1, wherein the base is positioned below the apparatus and is used to place the stock and the measuring station.
3. The concentricity testing device of claim 1, wherein the gauge stand is adapted to clamp the dial gauge.
4. The concentricity testing device of claim 1, further comprising a T-slot.
5. The concentricity sensing device of claim 1, further comprising a steel ruler for reading the position of the measurement.
6. The concentricity sensing device of claim 1, further comprising an adjustment linkage.
7. The concentricity testing device of claim 1, further comprising a measurement head located at one end of the measurement rod.
8. A concentricity testing method used in the concentricity testing apparatus according to any one of claims 1 to 7, the method comprising the steps of:
adjusting the positioning bolt according to the length of the pipe to determine the position of the material support;
the distance between the measuring head and the center of the first supporting block is equal to the distance between the dial gauge and the center of the first supporting block by adjusting the jacking adjusting block and the adjusting connecting rod;
adjusting the length of the measuring head to enable the measuring head to tightly press the inner diameter of the pipe, and adjusting the dial indicator to a zero position;
manually rotating the pipe, and reading data of a dial indicator;
and pushing the first supporting block and the second supporting block to move on the linear guide rail, reading the position of a measuring point through a steel plate ruler, and then selecting the pipe again for measurement for the required measuring position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752086.9A CN103727867B (en) | 2013-12-31 | 2013-12-31 | Concentricity detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752086.9A CN103727867B (en) | 2013-12-31 | 2013-12-31 | Concentricity detection device and method |
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| Publication Number | Publication Date |
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| CN103727867A CN103727867A (en) | 2014-04-16 |
| CN103727867B true CN103727867B (en) | 2017-02-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524982B (en) * | 2016-10-27 | 2020-01-31 | 陕西理工学院 | coaxial line measuring device and measuring method thereof |
| CN108507450A (en) * | 2017-11-20 | 2018-09-07 | 新昌县嘉德科技发展有限公司 | A kind of main shaft concentricity testing agency |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182865A (en) * | 1992-07-14 | 1993-02-02 | Greenslade Joe E | Apparatus for measuring workpiece concentricity |
| CN202281589U (en) * | 2011-09-16 | 2012-06-20 | 宁波圣菲机械制造有限公司 | Concentricity measuring tool |
| CN203259100U (en) * | 2013-05-24 | 2013-10-30 | 温州一鼎仪器制造有限公司 | Concentricity measuring instrument |
| CN203274629U (en) * | 2013-04-25 | 2013-11-06 | 江阴市东杰纺机专件有限公司 | Integrated detection device for roller finished product |
-
2013
- 2013-12-31 CN CN201310752086.9A patent/CN103727867B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182865A (en) * | 1992-07-14 | 1993-02-02 | Greenslade Joe E | Apparatus for measuring workpiece concentricity |
| CN202281589U (en) * | 2011-09-16 | 2012-06-20 | 宁波圣菲机械制造有限公司 | Concentricity measuring tool |
| CN203274629U (en) * | 2013-04-25 | 2013-11-06 | 江阴市东杰纺机专件有限公司 | Integrated detection device for roller finished product |
| CN203259100U (en) * | 2013-05-24 | 2013-10-30 | 温州一鼎仪器制造有限公司 | Concentricity measuring instrument |
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