CN114608440A - Bearing outer surface flatness detection equipment and detection method - Google Patents
Bearing outer surface flatness detection equipment and detection method Download PDFInfo
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- CN114608440A CN114608440A CN202210231577.8A CN202210231577A CN114608440A CN 114608440 A CN114608440 A CN 114608440A CN 202210231577 A CN202210231577 A CN 202210231577A CN 114608440 A CN114608440 A CN 114608440A
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- 238000001514 detection method Methods 0.000 title claims abstract description 115
- 239000000523 sample Substances 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
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- 238000005070 sampling Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
- G01B7/345—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces for measuring evenness
Abstract
The invention relates to bearing outer surface flatness detection equipment and a detection method, wherein the detection equipment comprises a control device, a detection device and a rotating device; the control device is respectively connected with the detection device and the rotating device; the detection device is arranged adjacent to the rotating device and comprises a sliding part, a length detection part and a fixed plate, and the sliding part and the length detection part are arranged on the fixed plate; the sliding part is connected with the fixed plate in a sliding way, and the length detection part can detect the sliding length of the sliding part; through setting up detection device and including sliding part and length detection part and fixed plate, wherein sliding part and fixed plate sliding connection, on the other hand, detection device still sets up with rotating device is adjacent for detection device can paste closely with the bearing on the rotating device, makes the unsmooth change of the surface of bearing can convert the relative movement of sliding part and fixed plate among the detection device, and then realizes the accurate detection to bearing surface flatness.
Description
Technical Field
The invention relates to the field of bearing detection, in particular to bearing outer surface detection equipment and a detection method.
Background
The bearing is an important part in the modern mechanical equipment, and the main function of the bearing is to support a mechanical rotating body, reduce the friction coefficient in the movement process of the mechanical rotating body and ensure the rotation precision of the mechanical rotating body. Wherein the life and dynamic load rating of the bearing need to be taken into account during use of the bearing, both of which are affected by the manufacturing accuracy of the bearing.
The current bearing processing technology level is low, the turning numerical control rate is low, the grinding automation level is low, and in addition, the working procedure capability index of production links such as quenching, cooling, lubricating and the like is low, and the consistency is poor, so that the produced bearing has large dispersion such as size, precision and the like. The improvement of the production link of the bearing requires the matching of the production method and the production equipment, so that the difficulty is high, the quality detection of the produced bearing is necessary on the premise of not changing the production link of the bearing, and the used bearing can be ensured to be higher than the minimum standard.
The quality detection of the bearing comprises inner ring and outer ring smoothness detection, rated load detection and the like. The outer ring smoothness detection mode of the bearing is mostly manual sampling detection, the efficiency is low, the precision is low, and the quality of all the bearings is difficult to ensure, so that detection equipment and a detection method for automatically detecting the bearing outer surface smoothness are needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides bearing outer surface flatness detection equipment and a detection method.
In order to solve the problems, the invention adopts the following technical scheme:
a bearing outer surface flatness detection device comprises a control device, a detection device and a rotating device; the control device is respectively connected with the detection device and the rotating device; the detection device is arranged adjacent to the rotating device and is used for detecting the outer surface flatness of the bearing arranged on the rotating device; the detection device comprises a sliding part, a length detection part and a fixed plate, wherein the sliding part and the length detection part are arranged on the fixed plate; the sliding part is connected with the fixed plate in a sliding mode, and the length detecting part can detect the sliding length of the sliding part.
Furthermore, the sliding part of the detection device comprises a sliding table, a sliding rail and a detection probe, wherein the sliding table is arranged on the sliding rail in a sliding manner, and the detection probe is fixedly arranged on the sliding table.
Further, the detection probe is rod-shaped, wherein the top end of the detection probe is provided with an arc surface.
Furthermore, a ball is arranged at the top of the detection probe.
Furthermore, the length detection part of the detection device adopts a magnetic grating ruler, a grating ruler or a spherical grating ruler.
Further, the detection device adopts a magnetic grid ruler; the magnetic grid ruler comprises a magnetic head and a magnetic strip, wherein the magnetic strip is arranged on the sliding table of the sliding part, the length direction of the magnetic strip is consistent with the length direction of the sliding rail, and the magnetic head is arranged on the fixed table; the magnetic head is disposed adjacent to the magnetic stripe.
Furthermore, the rotating device comprises a motor and a chuck, the chuck is arranged at the output end of the motor, and the chuck rotates along with the rotation of the motor.
Further, the chuck is a three-jaw chuck.
Further, the control device comprises a main control board; the main control board is provided with a display screen, a main control chip, a control key, an onboard power supply circuit and a plurality of optocouplers; the main control chip is respectively connected with the control key, the onboard power supply circuit and the display screen, and is also respectively connected with the length detection part, the rotating device and the external equipment through the optocoupler; the external equipment comprises a computer, a PLC control panel and an alarm device.
The detection method for the flatness of the outer surface of the bearing is characterized by being based on the detection device and comprising the following steps:
step 1: fixedly arranging a bearing to be detected on a chuck of a rotating device;
and 2, step: the position of the motor is adjusted through the control device, so that the bearing is in contact with a detection head of the detection device;
and step 3: controlling the motor to move upwards continuously for a set distance;
and 4, step 4: controlling a motor to rotate to drive a bearing to rotate along with the motor, and taking the reading of the magnetic stripe as a reference value by a magnetic head for the first time;
and 5: setting displacement or time at intervals by the magnetic head, reading the reading of the magnetic strip and transmitting the reading to a control device for recording; wherein the set displacement represents a read variation value of the magnetic stripe read by the magnetic head;
step 6: acquiring the maximum difference value of the current data according to the reading of the magnetic stripe, and judging whether the maximum difference value exceeds a set value or not; if the bearing exceeds the set value, the bearing is considered to be unqualified, and the step is finished; otherwise, entering the next step;
and 7: calculating the standard deviation of the magnetic stripe reading;
and 8: comparing the standard deviation obtained by calculation with a set value; if the bearing surface is not flat, the step is finished; otherwise, the bearing surface is considered to be flat, and the step is finished.
The invention has the beneficial effects that:
the detection device comprises a sliding part, a length detection part and a fixing plate, wherein the sliding part is connected with the fixing plate in a sliding manner;
the top of the detection probe is arranged to be an arc surface or a ball structure, so that the detection probe can be always in point contact with the outer surface of the bearing, and the numerical value of the flatness of the outer surface can be accurately detected;
through the flatness detection method, the flatness of the bearing can be automatically detected conveniently and quickly, tedious manual detection is effectively avoided, and efficiency and accuracy are guaranteed.
Drawings
Fig. 1 is a first perspective view of a first embodiment of the present invention;
FIG. 2 is a front view of the first embodiment of the present invention;
FIG. 3 is a second perspective view of the first embodiment of the present invention;
fig. 4 is a schematic connection diagram of a control device according to a first embodiment of the invention.
The attached drawings indicate the following: the sliding part 11, the sliding table 22, the sliding rail 33, the detection probe 44, the length detection part 55, the magnetic head 66, the magnetic strip 77, the fixing plate 88, the rotating device 99, the motor 1010, the chuck 1111 and the bearing 1212.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The first embodiment is as follows:
as shown in fig. 1-3, a bearing outer surface flatness detecting apparatus includes a control device, a detecting device, and a rotating device 9; wherein the control device is respectively connected with the detection device and the rotating device 9; the detection device is arranged adjacent to the rotating device 9 and is used for detecting the outer surface flatness of the bearing 12 arranged on the rotating device 9; the detection device comprises a sliding part 1, a length detection part 5 and a fixed plate 8, wherein the sliding part 1 and the length detection part 5 are arranged on the fixed plate 8; the sliding portion 1 is slidably connected to the fixed plate 8, and the length detecting portion 5 can detect the sliding length of the sliding portion 1.
The sliding part 1 of the detection device comprises a sliding table 2, a sliding rail 3 and a detection probe 4, wherein the sliding table 2 is arranged on the sliding rail 3 in a sliding mode, and the detection probe 4 is fixedly arranged on the sliding table 2. In this example, the sliding table 2 is L-shaped as a whole, the longer side of the sliding table 2 is connected to a slider, the slider is disposed on the slide rail 3, the shorter side is disposed near the rotating device 9, and the shorter side is disposed with the detection probe 4. The detection probe 4 is rod-shaped, wherein the top end of the detection probe 4 is provided with an arc surface, so that when a protrusion or a depression occurs on the surface to be detected, the arc surface structure can be in point contact with the surface to be detected, and the surface to be detected is better fitted. In this example, the top of the detecting probe 4 is provided with a ball, and the ball rolls on the surface to be detected of the bearing 12 by virtue of a spherical structure, so that the abrasion of the detecting probe 4 in the detecting process is reduced.
The length detection part 5 of the detection device can adopt a magnetic grating ruler, a spherical grating ruler and the like, and the magnetic grating ruler is adopted in the embodiment. The magnetic grid ruler comprises a magnetic head 6 and a magnetic strip 7, wherein the magnetic strip 7 is arranged on the sliding table 2 of the sliding part 1, the length direction of the magnetic strip 7 is consistent with the length direction of the sliding rail 3, and the magnetic strip 7 is arranged on the longer side of the L structure of the sliding table 2 in the embodiment. The magnetic head 6 is arranged on the fixed table; in this example, the vertical plate is arranged on the fixing table, the magnetic head 6 is arranged at one end, far away from the fixing table, of the vertical plate, and the magnetic head 6 is arranged close to the magnetic stripe 7, so that the magnetic head 6 can read accurate length information from the magnetic stripe 7.
It should be noted that, in this example, the track on the detection device is in the vertical direction, and the side provided with the detection probe 4 faces downward, so that the sliding table 2 on the sliding rail 3 can be acted by gravity and has a downward trend, and the detection probe 4 can be ensured to be tightly attached to the outer ring of the bearing 12 to be detected when detecting. In some other embodiments, an elastic device may be disposed between the sliding platform 2 and the fixing plate 8, so that the sliding platform 2 is subjected to a force applied by the fixing plate 8 toward the side of the detecting probe 4, in order to ensure that the detecting probe 4 can be tightly attached to the bearing 12, and due to the elastic device, when the detecting device is laid flat, the sliding rail 3 is in a horizontal state at the moment
The rotating device 9 comprises a motor 10 and a chuck 11, wherein the chuck 11 is provided with an output end connected with the motor 10, and the chuck 11 can rotate along with the rotation of the motor 10 in the example. The chuck 11 is used for fixing a bearing 12 to be detected, the chuck 11 is a three-jaw chuck 11, and the three-jaw chuck 11 is opened to abut against the inner side surface of the inner ring or the outer ring of the bearing 12, so that the bearing 12 is fixed. The motor 10 in this example is a stepper motor 10, which provides better control of the angle and speed of rotation, etc. In order to better ensure that the bearing 12 is contacted with the detection probe 4 of the detection device part, the rotating device 9 is arranged on external equipment which can be adjusted up, down, left and right, such as a screw rod structure, a mechanical arm structure and the like. The center line of the chuck 11 coincides with the center line of the rotating shaft of the motor 10, so that accurate detection can be realized when the chuck 11 rotates.
As shown in fig. 4, the control device includes a main control board, wherein the main control board is provided with a display screen, a main control chip, a control key, an onboard power supply circuit and a plurality of optical couplers, the main control chip is respectively connected with the control key, the onboard power supply circuit and the display screen, the main control chip is further respectively connected with the length detection part 5, the rotating device 9 and external equipment through the optical couplers, and the external equipment includes a computer, a PLC control panel, an alarm device and the like. In the embodiment, the main control chip is connected with the magnetic grid ruler through a 24V to 3.3V high-speed isolation optocoupler, wherein the 3.3V end of the optocoupler is connected with the main control chip; the main control chip is also connected with a motor 10 through a 3.3V-to-5V optical coupler, wherein a 3.3V end is connected with the main control chip; the main control chip is further connected with external equipment through two 3.3V-to-24V optical couplers, wherein a 3.3V end is connected with the main control chip, and the two optical couplers are respectively connected with input and output interfaces of the external equipment. The control keys include a start/stop key, a set/confirm key, an up key, a down key, a left key, and a right key. The start/stop button is used to control the rotation of the motor 10; the set/confirm button is used for controlling the rotation speed of the motor 10; the up key, the down key, the left key and the right key are used for controlling the position of the motor 10 and modifying parameter setting, the parameter setting comprises the rotating speed of the motor 10 and the like, and in the embodiment, the position of the motor 10 is controlled by controlling external equipment for setting the motor 10.
In the implementation process, firstly, a bearing 12 to be detected is arranged on a chuck 11 of a rotating device 9, a motor 10 is moved by controlling external equipment, so that a detection device of the detection device is in contact with the outer surface of the bearing 12, and along with the rotation of the motor 10, the flatness change of the outer surface of the bearing 12 is reflected through the relative position relation of a magnetic head 6 and a magnetic strip 7, so that the automatic detection of the flatness of the outer surface of the bearing 12 is realized.
A bearing outer surface flatness detection method comprises the following steps:
step 1: fixedly arranging a bearing 12 to be detected on a chuck 11 of the rotating device 9;
step 2: the position of the motor 10 is adjusted through the control device, so that the bearing 12 is in contact with the detection head of the detection device;
and step 3: controlling the motor 10 to move upwards continuously for a set distance; in this example only, 20mm upward;
and 4, step 4: controlling a motor 10 to rotate to drive a bearing 12 to rotate along with the rotation, reading the reading of the magnetic stripe 7 by a magnetic head 6 for the first time, and taking the reading as a reference value;
and 5: the magnetic head 6 sets displacement or time at intervals, reads the reading of the magnetic strip 7 and transmits the reading to the control device for recording; wherein the set displacement represents a reading change value of the magnetic stripe 7 read by the magnetic head 6;
and 6: acquiring the maximum difference value of the current data according to the reading of the magnetic stripe 7, and judging whether the maximum difference value exceeds a set value or not; if the bearing position exceeds the set value, the bearing 12 is considered to be unqualified, and the step is ended; otherwise, entering the next step;
and 7: calculating the standard deviation of the reading of the magnetic stripe 7;
and 8: comparing the standard deviation obtained by calculation with a set value; if the surface roughness exceeds the set value, the surface of the bearing 12 is considered to be uneven, and the step is finished; otherwise, the surface of the bearing 12 is considered to be flat, and the step is ended.
In the step 3, after the detection probe 4 contacts the bearing 12, the motor 10 is continuously controlled to move upwards, so that the detection probe 4 can be ensured to be pressed on the outer surface of the bearing 12.
In step 5, if the magnetic head 6 performs reading at set intervals, the reading and the corresponding reading time or rotation angle are recorded, in this case, the interval between the reading time and the reference value reading time. If the magnetic head 6 performs reading at a set distance, the magnetic head 6 performs reading every time the magnetic strip 7 moves by 1um, it should be noted that after each reading, the latest reading is updated to the reference value, and in the subsequent rotation process, if the height is lower than the reference value by 1um, the reading is performed and the reference value is updated; at each reading, the time or rotation angle of the reading is also recorded.
The above description is only one specific example of the present invention and should not be construed as limiting the invention in any way. It will be apparent to persons skilled in the relevant art(s) that, having the benefit of this disclosure and its principles, various modifications and changes in form and detail can be made without departing from the principles and structures of the invention, which are, however, encompassed by the appended claims.
Claims (10)
1. The bearing outer surface flatness detection equipment is characterized by comprising a control device, a detection device and a rotating device; the control device is respectively connected with the detection device and the rotating device; the detection device is arranged adjacent to the rotating device and is used for detecting the outer surface flatness of the bearing arranged on the rotating device; the detection device comprises a sliding part, a length detection part and a fixed plate, wherein the sliding part and the length detection part are arranged on the fixed plate; the sliding part is connected with the fixed plate in a sliding mode, and the length detection part can detect the sliding length of the sliding part.
2. The bearing outer surface flatness detection apparatus according to claim 1, wherein the sliding portion of the detection device includes a sliding table, a sliding rail, and a detection probe, wherein the sliding table is slidably disposed on the sliding rail, and the detection probe is fixedly disposed on the sliding table.
3. A bearing outer surface flatness detecting apparatus according to claim 2, wherein said detecting probe is rod-shaped, and wherein a tip of the detecting probe is provided as a curved surface.
4. A bearing outer surface flatness detection apparatus according to claim 3, wherein said detection probe is provided with balls at its top.
5. The bearing outer surface flatness detection apparatus of claim 2, wherein the length detection portion of the detection device employs a magnetic scale, a grating scale or a ball scale.
6. The bearing outer surface flatness detection apparatus of claim 2, wherein said detection means employs a magnetic grid ruler; the magnetic grid ruler comprises a magnetic head and a magnetic strip, wherein the magnetic strip is arranged on the sliding table of the sliding part, the length direction of the magnetic strip is consistent with the length direction of the sliding rail, and the magnetic head is arranged on the fixed table; the magnetic head is disposed adjacent to the magnetic stripe.
7. A bearing outer surface flatness detecting apparatus according to claim 1, wherein said rotating means includes a motor and a chuck, the chuck being provided with an output of the motor, the chuck rotating with rotation of the motor.
8. A bearing outer surface flatness detecting apparatus according to claim 2, wherein said cartridge is a three-jaw cartridge.
9. A bearing outer surface flatness detecting apparatus according to claim 1, wherein said control means includes a main control board; the main control board is provided with a display screen, a main control chip, a control key, an onboard power supply circuit and a plurality of optocouplers; the main control chip is respectively connected with the control keys, the onboard power supply circuit and the display screen, the main control chip is also respectively connected with the length detection part, the rotating device and the external equipment through the optocoupler, and the external equipment comprises a computer, a PLC control panel and an alarm device.
10. A bearing outer surface flatness detection method, characterized in that the detection method is based on the detection device of any one of claims 1 to 9, and the detection method comprises the following steps:
step 1: fixedly arranging a bearing to be detected on a chuck of a rotating device;
and 2, step: the position of the motor is adjusted through the control device, so that the bearing is in contact with a detection head of the detection device;
and step 3: controlling the motor to move upwards continuously for a set distance;
and 4, step 4: controlling a motor to rotate to drive a bearing to rotate along with the motor, and taking the reading of the magnetic stripe as a reference value by a magnetic head for the first time;
and 5: setting displacement or time at intervals by the magnetic head, reading the reading of the magnetic strip and transmitting the reading to a control device for recording; wherein the set displacement represents a read variation value of the magnetic stripe read by the magnetic head;
step 6: acquiring the maximum difference value of the current data according to the reading of the magnetic stripe, and judging whether the maximum difference value exceeds a set value or not; if the bearing exceeds the set value, the bearing is considered to be unqualified, and the step is finished; otherwise, entering the next step;
and 7: calculating the standard deviation of the magnetic stripe reading;
and 8: comparing the standard deviation obtained by calculation with a set value; if the bearing surface is not flat, the step is finished; otherwise, the bearing surface is considered to be flat, and the step is finished.
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| CN202210231577.8A CN114608440A (en) | 2022-03-10 | 2022-03-10 | Bearing outer surface flatness detection equipment and detection method |
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| CN108663011A (en) * | 2018-05-16 | 2018-10-16 | 广州隆控机电设备有限公司 | A kind of bearing fitting plane jitter detection apparatus |
| CN208736337U (en) * | 2018-10-24 | 2019-04-12 | 浙江大学台州研究院 | Eyeglass height measuring device based on magnetic railings ruler |
| CN110285751A (en) * | 2019-05-28 | 2019-09-27 | 中国北方车辆研究所 | Automate ring shaped multi-tooth component bottom of the tooth axial surface roughness measuring instrument |
| CN210242753U (en) * | 2019-08-16 | 2020-04-03 | 重庆美心翼申机械股份有限公司 | Part surface roughness testing fixture |
| CN210426509U (en) * | 2019-08-27 | 2020-04-28 | 上海和伍物联网系统有限公司 | Geometric parameter detection device |
| CN210981090U (en) * | 2019-10-30 | 2020-07-10 | 中山荣拓智能装备有限公司 | Gem height and flatness measuring device |
| CN211042084U (en) * | 2019-12-31 | 2020-07-17 | 泰州市龙洋木业有限公司 | Automatic measuring device for depth of furniture row hole and flatness of plate |
| CN113124748A (en) * | 2019-12-31 | 2021-07-16 | 泰州市龙洋木业有限公司 | Automatic measuring device for depth of furniture row hole and flatness of plate |
| CN111156953A (en) * | 2020-03-19 | 2020-05-15 | 岭南师范学院 | Surface smoothness detection device for intelligent bearing manufacturing |
| CN111412831A (en) * | 2020-03-27 | 2020-07-14 | 北京交通大学 | Impact-resistant magnetic liquid touch sensor |
| CN212692849U (en) * | 2020-09-21 | 2021-03-12 | 福州市长乐区东风轴承有限公司 | Bearing surface roughness detection device |
| CN212747758U (en) * | 2020-09-30 | 2021-03-19 | 青岛永函包装机械有限公司 | Roughness detector capable of accurately measuring |
| CN213657750U (en) * | 2020-12-30 | 2021-07-09 | 郑州宏拓磨具制造有限公司 | Grinding wheel flatness detection device |
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