CN112484686A - Method for detecting symmetry degree of shaft part flat head - Google Patents
Method for detecting symmetry degree of shaft part flat head Download PDFInfo
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- CN112484686A CN112484686A CN202011488485.5A CN202011488485A CN112484686A CN 112484686 A CN112484686 A CN 112484686A CN 202011488485 A CN202011488485 A CN 202011488485A CN 112484686 A CN112484686 A CN 112484686A
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- flat head
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to a method for detecting the symmetry degree of a flat head of a shaft part, which comprises the following steps: 1) measuring the chord heights of two sides of the flat head: placing a gauge stand of the digital display height gauge on the plane of the flat head, measuring the plane of the flat head by using a contact of the digital display height gauge, and resetting the reading of the digital display height gauge; the gauge stand of the digital display height gauge is positioned on the flat head plane, the contact of the digital display height gauge is contacted with the excircle surface of the journal to be measured, and moves along the vertical direction of the axis of the shaft part to measure the maximum numerical value), and the maximum numerical value C1 is recorded; measuring the chord height of the other side of the flat head, and recording a maximum value C2; 2) and (3) calculating the symmetry: and subtracting the C2 from the value C1 recorded by measurement at two sides of the flat head, and dividing by two to obtain a symmetry value. The advantages are that: the method can realize simple, convenient and quick detection of the flat head symmetry degree with high precision in a state of leaving the production line.
Description
Technical Field
The invention belongs to the field of roller equipment, and particularly relates to a method for detecting the symmetry of a flat head of an axle part.
Background
The flat head is used as a transmission part of large shaft parts such as a roller and the like and is connected with a coupler, the flat head needs to be frequently assembled and disassembled when a roller profile of the roller is repaired, and the symmetry of the flat head directly influences the use effect and the disassembly efficiency. In order to avoid the problem that the symmetry is out of tolerance and influences use, the flat head symmetry of large shaft parts such as rollers and the like must be measured, machining errors are guaranteed to be within a designed range, but certain difficulty exists in actual production and acceptance detection, and therefore how to measure quickly and accurately becomes a focus of attention.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a simple, convenient and quick shaft part flat head symmetry detection method with high precision, realize off-line detection with relatively low cost and meet the requirement of flat head symmetry detection.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for detecting the symmetry degree of a flat head of a shaft part comprises the following steps:
1) measuring the chord heights of two sides of the flat head
a, placing a gauge stand of the digital display height gauge on a flat head plane, measuring the flat head plane by using a contact of the digital display height gauge, and resetting the reading of the digital display height gauge;
b, enabling a gauge stand of the digital display height gauge to be located on the flat head plane, enabling a contact of the digital display height gauge to contact the outer circle surface of a shaft neck to be measured, moving along the vertical direction of the axis of the shaft part, and measuring the maximum numerical value), and recording the maximum numerical value C1;
c, repeating the operation of the step a and the operation of the step b, measuring the chord height on the other side of the flathead, and recording a maximum value C2;
2) calculation of degree of symmetry
And subtracting the C2 from the value C1 recorded by measurement at two sides of the flat head, and dividing by two to obtain a symmetry value.
And (3) after the symmetry numerical value is calculated, processing the flat head, and repeating the operations of the step 1) and the step 2) to ensure the symmetry.
Calculating the symmetry value, processing the flat head, repeating the operations a and B in the step 1), measuring the chord height value of one side of the flat head, measuring the thickness dimension B of the flat head, and measuring the diameter dimension of the shaft neck
The chord height value of the other side of the flat head is equal to A-B-the chord height value of one side of the flat head; and dividing the difference value of the chord height value of one side of the flat head and the chord height value of the other side of the flat head by 2 to obtain a symmetry numerical value.
Compared with the prior art, the invention has the beneficial effects that:
the method for detecting the symmetry degree of the flat head of the shaft part can realize simple, convenient and quick detection of the symmetry degree of the flat head with high precision in a state of leaving a production line. The detection of the symmetry degree of the flat head can be realized by only adopting one digital display height gauge, the cost is low, and the field operation is convenient.
Drawings
FIG. 1 is a schematic view of the measurement of the present invention.
In the figure: 1-flat head 2-digital display height gauge 3-axis of the shaft part.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1, a method for detecting the symmetry of a flat head of a shaft part comprises the following steps:
1) measuring the chord heights of two sides of the flat head
a, placing a gauge stand of a digital display height gauge 2 on the plane of a flat head 1, measuring the plane of the flat head 1 by using a contact of the digital display height gauge 2, and resetting the reading of the digital display height gauge 2;
b, enabling a gauge stand of the digital display height gauge to be located on the flat head plane, enabling a contact of the digital display height gauge to contact the outer circle surface of a shaft neck to be measured, moving along the vertical direction of the axis of the shaft part, measuring the maximum numerical value, and recording the maximum numerical value C1;
c, repeating the operation of the step a and the operation of the step b, measuring the chord height on the other side of the flathead, and recording a maximum value C2;
2) calculation of degree of symmetry
And subtracting the values recorded by measuring the two sides of the flat head 1, and dividing by two to obtain a symmetry value.
And (3) after the symmetry numerical value is calculated, processing the flat head, and repeating the operations of the step 1) and the step 2) to ensure the symmetry.
Calculating the symmetry value, processing the flat head, repeating the operations a and B in the step 1), measuring the chord height value C1 of one side of the flat head, measuring the thickness dimension B of the flat head, and measuring the diameter dimension of the shaft neck
Calculating the chord height value C2 of the other side of the flat head as A-B-the chord height value C1 of one side of the flat head; and dividing the difference value C2 between the chord height value C1 at one side of the flat head and the chord height value at the other side of the flat head by 2 to obtain a symmetry numerical value.
In actual measurement, the larger the range of the height gauge is not, and the better the universality is. Because the measuring range is large, the weight is large, the control is difficult during the measurement, and the detection error is relatively large; the measuring range is large, when a plurality of workpieces are placed densely, mutual interference is easily caused, and the interference workpieces need to be placed at a large interval so as to realize measurement; the measuring range is large, the price of the digital display height gauge 2 is high, and the use cost is high. The digital display height gauge with the thickness of 0-300 mm is recommended to be used during processing and measurement of the flat head of the roller.
Examples
After data inspection is carried out by using a numerical control machine tool, the method is used for measuring, the data of the numerical control machine tool and the data of the numerical control machine tool are compared and verified, 10 rollers are verified in total, and the measured data are shown in table 1.
TABLE 1 comparison of measured data
The detection data show that the maximum error of one side is 0.018mm, the maximum error of the symmetry is 0.011mm, the average error of the symmetry is 0.003mm, and compared with the common symmetry requirement of 0.1mm, the error is 3 percent, and the measurement requirement of the symmetry can be completely met.
Claims (3)
1. The method for detecting the symmetry degree of the flat head of the shaft part is characterized by comprising the following steps of:
1) measuring the chord heights of two sides of the flat head
a, placing a gauge stand of the digital display height gauge on a flat head plane, measuring the flat head plane by using a contact of the digital display height gauge, and resetting the reading of the digital display height gauge;
b, enabling a gauge stand of the digital display height gauge to be located on the flat head plane, enabling a contact of the digital display height gauge to contact the outer circle surface of a shaft neck to be measured, moving along the vertical direction of the axis of the shaft part, and measuring the maximum numerical value), and recording the maximum numerical value C1;
c, repeating the operation of the step a and the operation of the step b, measuring the chord height on the other side of the flathead, and recording a maximum value C2;
2) calculation of degree of symmetry
And subtracting the C2 from the value C1 recorded by measurement at two sides of the flat head, and dividing by two to obtain a symmetry value.
2. The method for detecting the symmetry of the flat head of the shaft part according to claim 1, wherein the flat head is machined after the value of the symmetry is calculated, and the operations of the step 1) and the step 2) are repeated to ensure the symmetry.
3. The method for detecting the symmetry degree of the flat head of the shaft part as claimed in claim 1, wherein the flat head is machined after the symmetry degree value is calculated, the operations a and B in the step 1) are repeated, the chord height value of one side of the flat head is measured, the thickness dimension B of the flat head is measured, and the diameter dimension of the shaft neck is measured
The chord height value of the other side of the flat head is equal to A-B-the chord height value of one side of the flat head; and dividing the difference value of the chord height value of one side of the flat head and the chord height value of the other side of the flat head by 2 to obtain a symmetry numerical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011488485.5A CN112484686A (en) | 2020-12-16 | 2020-12-16 | Method for detecting symmetry degree of shaft part flat head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011488485.5A CN112484686A (en) | 2020-12-16 | 2020-12-16 | Method for detecting symmetry degree of shaft part flat head |
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| CN112484686A true CN112484686A (en) | 2021-03-12 |
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| CN202011488485.5A Pending CN112484686A (en) | 2020-12-16 | 2020-12-16 | Method for detecting symmetry degree of shaft part flat head |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980502A (en) * | 2011-09-06 | 2013-03-20 | 陈波 | Caliper and operation method for symmetrical degree testing of large diameter shaft component key groove |
| CN104457522A (en) * | 2014-11-28 | 2015-03-25 | 盛瑞传动股份有限公司 | Method for measuring keyway symmetry degree of shaft part |
| CN108007323A (en) * | 2017-11-29 | 2018-05-08 | 首都航天机械公司 | One kind is used for rudder axial workpiece rudderpost groove device for detecting symmetry degree and method |
| JP2019015705A (en) * | 2017-07-11 | 2019-01-31 | 長野精工株式会社 | Key groove symmetry degree measurement device, tuning method of key groove symmetry degree measurement device, and measurement method of symmetry degree of key groove by key groove symmetry degree measurement device |
| CN109631730A (en) * | 2018-12-30 | 2019-04-16 | 江苏共昌轧辊股份有限公司 | A kind of roller palm device for detecting symmetry degree and its detection method |
-
2020
- 2020-12-16 CN CN202011488485.5A patent/CN112484686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980502A (en) * | 2011-09-06 | 2013-03-20 | 陈波 | Caliper and operation method for symmetrical degree testing of large diameter shaft component key groove |
| CN104457522A (en) * | 2014-11-28 | 2015-03-25 | 盛瑞传动股份有限公司 | Method for measuring keyway symmetry degree of shaft part |
| JP2019015705A (en) * | 2017-07-11 | 2019-01-31 | 長野精工株式会社 | Key groove symmetry degree measurement device, tuning method of key groove symmetry degree measurement device, and measurement method of symmetry degree of key groove by key groove symmetry degree measurement device |
| CN108007323A (en) * | 2017-11-29 | 2018-05-08 | 首都航天机械公司 | One kind is used for rudder axial workpiece rudderpost groove device for detecting symmetry degree and method |
| CN109631730A (en) * | 2018-12-30 | 2019-04-16 | 江苏共昌轧辊股份有限公司 | A kind of roller palm device for detecting symmetry degree and its detection method |
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Application publication date: 20210312 |
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| RJ01 | Rejection of invention patent application after publication |