CN111487010A - Pressure calibration method of bipolar guide rail pressure mechanism - Google Patents
Pressure calibration method of bipolar guide rail pressure mechanism Download PDFInfo
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- CN111487010A CN111487010A CN202010480860.5A CN202010480860A CN111487010A CN 111487010 A CN111487010 A CN 111487010A CN 202010480860 A CN202010480860 A CN 202010480860A CN 111487010 A CN111487010 A CN 111487010A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention discloses a pressure calibration method of a bipolar guide rail pressure mechanism, which comprises the following steps: installing a pressure sensor on an index plate of the tube shell positioning mechanism; the starting motor drives the Z-axis screw shaft to rotate through the coupler, the Z-axis screw shaft drives the Z-axis nut block to move downwards, the Z-axis nut block drives the sealing head to move downwards, and when the photoelectric sensor on the pressure block shields the photoelectric sensor on the sealing head, the starting calibration point is set. The method is simple, convenient and precise, and can meet the pressure requirements of various environments and reduce the rejection rate.
Description
Technical Field
The invention belongs to the technical field of airtight resistance welding pressure calibration, and particularly relates to a pressure calibration method of a bipolar guide rail pressure mechanism.
Background
In the air-tight resistance welding of the pipe shell, the control of the pressure applied to the pipe shell is very important, particularly in the welding of the ceramic pipe shell, the pipe shell is damaged due to the fact that the excessive pressure is applied, the rejection rate is increased, and great loss is brought to enterprises.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a simple, convenient and precise pressure calibration method for a bipolar guide rail pressure mechanism, which meets the pressure requirements of various environments and reduces the rejection rate.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the pressure calibration method of the bipolar guide rail pressure mechanism comprises the following steps:
a. installing a pressure sensor on an index plate of the tube shell positioning mechanism;
b. starting a motor, driving a Z-axis screw rod shaft to rotate through a coupler, driving a Z-axis nut block to descend by the Z-axis screw rod shaft, driving a sealing head to descend by the Z-axis nut block, and setting as an initial calibration point when a photoelectric sensor on the sealing head is shielded by a photoelectric sensing piece on a pressure block;
c. slowly applying pressure, enabling the downward movement increment value of the sealing head to be 0.001 mm-0.1 mm, respectively recording the displacement values of the sealing head corresponding to the pressure sensors when the pressure values of the pressure sensors are 500g, 700g, 900g, 1100g, 1300g, 1500g, 1700g, 1900g, 2100g and 2300g, repeating for 2 times, and respectively taking the average value of 3 times of data to obtain the displacement value corresponding to the pressure value;
d. the displacement value is an abscissa, the pressure value is an ordinate, a group of coordinate points corresponding to the displacement value and the corresponding pressure value are marked in a rectangular coordinate system, the group of coordinate points are fitted by a curve, the relationship between the displacement value of the sealing welding head and the pressure of the sealing welding head is established, the elastic coefficient k and the coefficient b of the spring are further obtained, and x is the displacement value: and F is kx + b, and the calibration of the airtight resistance welding pressure is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a nine-point calibration method: respectively recording the displacement values of the sealing heads corresponding to the pressure sensors when the pressure values of the pressure sensors are 500g, 700g, 900g, 1100g, 1300g, 1500g, 1700g, 1900g, 2100g and 2300g, repeating for 2 times, respectively averaging the data for 3 times to obtain the displacement value corresponding to the pressure value, drawing a rectangular coordinate system, and carrying out linearization processing on the pressure value and the displacement value to obtain a functional relation between the pressure value and the displacement value;
2. the method is simple, convenient and precise, and can meet the pressure requirements of various environments and reduce the rejection rate.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram illustrating a line graph of displacement values and pressure values according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
The pressure calibration method of the bipolar guide rail pressure mechanism comprises the following steps:
a. installing a pressure sensor on an index plate of the tube shell positioning mechanism;
b. starting a motor, driving a Z-axis screw rod shaft to rotate through a coupler, driving a Z-axis nut block to descend by the Z-axis screw rod shaft, driving a sealing head to descend by the Z-axis nut block, and setting as an initial calibration point when a photoelectric sensor on the sealing head is shielded by a photoelectric sensing piece on a pressure block;
c. slowly applying pressure, enabling the downward movement increment value of the sealing head to be 0.001 mm-0.1 mm, respectively recording the displacement values of the sealing head corresponding to the pressure sensors when the pressure values of the pressure sensors are 500g, 700g, 900g, 1100g, 1300g, 1500g, 1700g, 1900g, 2100g and 2300g, repeating for 2 times, and respectively taking the average value of 3 times of data to obtain the displacement value corresponding to the pressure value;
d. using the displacement value as an abscissa, the pressure value as an ordinate, marking a group of coordinate points corresponding to the displacement value and the corresponding pressure value in a rectangular coordinate system, fitting the group of coordinate points by using a curve, establishing a relation between the displacement value of the sealing welding head and the pressure of the sealing welding head, and further obtaining the elastic coefficient k and the coefficient b of the spring, wherein x is the displacement value: and F is kx + b, and the calibration of the airtight resistance welding pressure is realized.
Example 2
As shown in table 1, the following data examples are selected for illustration based on example 1 for the convenience of understanding:
| pressure (g) | For the first time/(mm) | Second time/(mm) | Third time/(mm) | Displacement value/(mm) |
| 500 | 0.900 | 0.850 | 0.900 | 0.883 |
| 700 | 1.390 | 1.410 | 1.410 | 1.403 |
| 900 | 1.890 | 1.860 | 1.880 | 1.877 |
| 1100 | 2.270 | 2.320 | 2.330 | 2.307 |
| 1300 | 2.814 | 2.820 | 2.810 | 2.815 |
| 1500 | 3.216 | 3.340 | 3.330 | 3.295 |
| 1700 | 3.686 | 3.780 | 3.780 | 3.749 |
| 1900 | 4.196 | 4.280 | 4.280 | 4.252 |
| 2100 | 4.616 | 4.616 | 4.630 | 4.621 |
| 2300 | 5.036 | 5.110 | 5.080 | 5.075 |
As shown in fig. 1, according to table 1, a line graph of the displacement value and the pressure value is plotted with the displacement value as an abscissa and the pressure value as an ordinate, and it is found from the line graph that the relationship between the displacement value and the pressure value is: f kx + b, two adjacent groups of values are substituted into the calculated elastic coefficient k and coefficient b,
if F2300 g, average 5.075mm, and F2100 g, average 4.621mm are put into F kx + b: it can be calculated that k is 439.883, b is 67.449, and F is 439.883x +67.449, when in use, when the force is between 2100g and 2300g, the displacement value can be obtained by inputting the required applied F in the formula F439.883 x + 67.449. The eight formulas of 500g-700g, 700g-900g, 900g-1100g, 1100g-1300g, 1300g-1500g, 1500g-1700g, 1700g-1900g and 1900g-2100g can be obtained by the same method.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, component separation or combination and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (1)
1. The pressure calibration method of the bipolar guide rail pressure mechanism is characterized by comprising the following steps:
a. installing a pressure sensor on an index plate of the tube shell positioning mechanism;
b. starting a motor, driving a Z-axis screw rod shaft to rotate through a coupler, driving a Z-axis nut block to descend by the Z-axis screw rod shaft, driving a sealing head to descend by the Z-axis nut block, and setting as an initial calibration point when a photoelectric sensor on the sealing head is shielded by a photoelectric sensing piece on a pressure block;
c. slowly applying pressure, enabling the downward movement increment value of the sealing head to be 0.001 mm-0.1 mm, respectively recording the displacement values of the sealing head corresponding to the pressure sensors when the pressure values of the pressure sensors are 500g, 700g, 900g, 1100g, 1300g, 1500g, 1700g, 1900g, 2100g and 2300g, repeating for 2 times, and respectively taking the average value of 3 times of data to obtain the displacement value corresponding to the pressure value;
d. the displacement value is an abscissa, the pressure value is an ordinate, a group of coordinate points corresponding to the displacement value and the corresponding pressure value are marked in a rectangular coordinate system, the group of coordinate points are fitted by a curve, the relationship between the displacement value of the sealing welding head and the pressure of the sealing welding head is established, the elastic coefficient k and the coefficient b of the spring are further obtained, and x is the displacement value: and F is kx + b, and the calibration of the airtight resistance welding pressure is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010480860.5A CN111487010A (en) | 2020-05-30 | 2020-05-30 | Pressure calibration method of bipolar guide rail pressure mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010480860.5A CN111487010A (en) | 2020-05-30 | 2020-05-30 | Pressure calibration method of bipolar guide rail pressure mechanism |
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| CN103323331A (en) * | 2013-07-09 | 2013-09-25 | 中南大学 | Method for obtaining stress-strain curve of filling body test block through common press |
| CN204128829U (en) * | 2014-08-26 | 2015-01-28 | 北京海普瑞森科技发展有限公司 | Pressing machine testing table |
| CN104368953A (en) * | 2014-08-19 | 2015-02-25 | 上海电装燃油喷射有限公司 | Method for installing plug of natural gas engine fuel gas metering valve |
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| CN105527079A (en) * | 2015-12-03 | 2016-04-27 | 北京机械设备研究所 | Dynamic calibration method for springs |
| CN206264401U (en) * | 2016-10-26 | 2017-06-20 | 沃得精机(中国)有限公司 | The stroke of a press has a grade adjusting means |
| CN206905989U (en) * | 2017-07-27 | 2018-01-19 | 北京新能源汽车股份有限公司 | Calibration device for calibrating elastic element |
| CN109932125A (en) * | 2017-12-15 | 2019-06-25 | 核工业北京地质研究院 | A kind of pressure sensor calibrating method based on pressure versus time variation relation |
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2020
- 2020-05-30 CN CN202010480860.5A patent/CN111487010A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2514327Y (en) * | 2001-08-22 | 2002-10-02 | 北京机电研究所 | Imitating loader for press |
| CN202701588U (en) * | 2012-08-10 | 2013-01-30 | 长沙华锐机电实业有限公司 | Spot welding machine with novel pressure mechanism |
| CN103323331A (en) * | 2013-07-09 | 2013-09-25 | 中南大学 | Method for obtaining stress-strain curve of filling body test block through common press |
| CN104368953A (en) * | 2014-08-19 | 2015-02-25 | 上海电装燃油喷射有限公司 | Method for installing plug of natural gas engine fuel gas metering valve |
| CN204128829U (en) * | 2014-08-26 | 2015-01-28 | 北京海普瑞森科技发展有限公司 | Pressing machine testing table |
| CN204687404U (en) * | 2015-06-18 | 2015-10-07 | 温州纳米克自动化科技有限公司 | Electronic press machine |
| CN105527079A (en) * | 2015-12-03 | 2016-04-27 | 北京机械设备研究所 | Dynamic calibration method for springs |
| CN206264401U (en) * | 2016-10-26 | 2017-06-20 | 沃得精机(中国)有限公司 | The stroke of a press has a grade adjusting means |
| CN206905989U (en) * | 2017-07-27 | 2018-01-19 | 北京新能源汽车股份有限公司 | Calibration device for calibrating elastic element |
| CN109932125A (en) * | 2017-12-15 | 2019-06-25 | 核工业北京地质研究院 | A kind of pressure sensor calibrating method based on pressure versus time variation relation |
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Application publication date: 20200804 |