CN108534737B - Measuring gauge for rear axle of passenger car and on-line automatic measuring method thereof - Google Patents
Measuring gauge for rear axle of passenger car and on-line automatic measuring method thereof Download PDFInfo
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- CN108534737B CN108534737B CN201810590468.9A CN201810590468A CN108534737B CN 108534737 B CN108534737 B CN 108534737B CN 201810590468 A CN201810590468 A CN 201810590468A CN 108534737 B CN108534737 B CN 108534737B
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- 238000000034 method Methods 0.000 title abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 163
- 238000004891 communication Methods 0.000 claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims description 22
- 238000000691 measurement method Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
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- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000000007 visual effect Effects 0.000 abstract description 8
- 238000013480 data collection Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005070 sampling Methods 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
- 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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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a measuring gauge for a rear axle of a passenger car and an online automatic measuring method thereof, wherein the method comprises the following steps: selecting a data terminal communication mode; acquiring a workpiece and placing the workpiece at a station; acquiring information of an operator and a workpiece; selecting a mode of reading data by a data terminal; the control positioning module is used for positioning the workpiece; controlling the clamping module to clamp the workpiece; controlling the data acquisition module to move to a working position and acquiring compressed data; acquiring control state information of a PLC control module; judging control state information, and if the control state information allows measurement, acquiring and analyzing compressed data to obtain a measurement result; judging the measurement result, if the measurement result is qualified, automatically controlling the data acquisition module, the clamping module, the positioning module and the lifting module to loosen in sequence by the PLC control module, and taking down the workpiece. The invention has the characteristics of high positioning precision, automatic measurement, convenient operation, manpower saving, high measurement precision, visual and understandable measurement result, high production efficiency and the like.
Description
Technical Field
The invention relates to the field of automobile rear axle measurement, in particular to a measuring gauge for a rear axle of a passenger car and an online automatic measuring method thereof.
Background
The rear axle of a passenger car is a very important safety element of the car body, so that the relative accuracy requirement is relatively high. Especially, if the toe-in and camber parameters are out of tolerance, the four-wheel positioning of a main machine factory is directly affected, namely, the tire grinding phenomenon occurs. In the traditional rear axle positioning system, 2 cylinders are respectively propped up by the rear axle sleeves to play a role in positioning, the sleeves at two ends of the part cannot be positioned at the same time in the mode, and the positioning accuracy is not high enough, so that the accuracy of measured data is affected; secondly, the traditional rear axle measurement mode is sampling detection, and the measurement data is single and not comprehensive enough; and the time of traditional detecting means detection single product is about 30 minutes one, and the measuring result can only be manually recorded the form, and the measuring result needs manual calculation to judge, and the measuring result is not directly perceived obvious enough, and measuring result is through manual measurement and calculation, inefficiency, produces the error easily simultaneously, can't satisfy modernized mechanical production beat, and the manufacturing cost of enterprise is high, and production efficiency is low. Aiming at the technical problems, the invention discloses an on-line automatic measurement method for a rear axle of a passenger car, which has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and easily understood measurement result, high measurement speed, high production efficiency and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an on-line automatic measurement method for a rear axle measuring tool of a passenger car, so as to solve the technical problems that the rear axle measuring tool in the prior art is low in positioning precision, incapable of performing automatic measurement, insufficient in measured data, complex in operation, needs a large amount of manpower and labor, low in measuring precision, insufficient in intuitionistic measuring result, low in measuring speed, low in production efficiency and the like. The invention has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and understandable measurement result, high measurement speed, high production efficiency and the like.
The invention is realized by the following technical scheme: the invention discloses a rear axle measuring and detecting tool of a passenger car, which comprises a base, wherein a positioning module, a clamping module and a data acquisition module are fixedly arranged on the base, the positioning module is arranged in the middle of the base, the clamping module and the data acquisition module are symmetrically arranged about the positioning module, a lifting module is also arranged on the base, and the lifting module is symmetrically arranged about the positioning module:
The positioning module comprises a cylinder mounting seat, a positioning cylinder and a rotating shaft, wherein the cylinder mounting seat is fixedly arranged in the middle of the base, the positioning cylinder is longitudinally and fixedly arranged on the cylinder mounting seat, the rotating shaft is fixedly arranged on the base and symmetrically arranged on two sides of the positioning cylinder, the head of a piston rod of the positioning cylinder is provided with a connector, two sides of the connector are respectively and rotatably connected with a rotating arm, the other end of the rotating arm penetrates through the rotating shaft and is fixedly connected with a taper pin, the rotating arm is in clearance fit with the rotating shaft, the taper pin is fixedly connected with the top end of a clamping arm through a taper pin sleeve, and the bottom end of the clamping arm is also provided with a clamping sleeve;
The clamping module comprises a clamping cylinder and a clamp, the clamp is fixedly connected with the end part of a piston rod of the clamping cylinder, the clamping cylinder is fixedly arranged on the side wall of the base, the clamping cylinder is symmetrically arranged on two sides of the positioning cylinder, and the head part of the clamp is also provided with an S surface;
The number of the data acquisition modules is 4, each data acquisition module comprises a measuring cylinder, an equal-height seat and a displacement sensor, the equal-height seats are fixedly arranged on the base, the equal-height seats are symmetrically arranged on two sides of the positioning cylinder, the measuring cylinders are fixedly arranged in the equal-height seats, the end parts of the equal-height seats are provided with sliding rails, the sliding rails are provided with sliding blocks in a sliding manner, the displacement sensors are fixedly arranged on the sliding blocks, and the end parts of piston rods of the measuring cylinders are fixedly connected with the sliding blocks;
the lifting module comprises a lifting cylinder and a lifting plate, the end part of a piston rod of the lifting cylinder is fixedly connected with the bottom end of the lifting plate, the lifting cylinder is symmetrically arranged on two sides of the positioning cylinder, a cylinder mounting hole is formed in the base, and the lifting cylinder is fixedly arranged in the cylinder mounting hole.
Further, in order to limit the positions of the clamping arms and the rear shaft, the rear shaft is better positioned, the opening angle of the clamping arms is prevented from being too large, the rear shaft is not firmly positioned and is easy to loosen, a limiting block is further arranged on the base and fixedly mounted on the base through bolts, the limiting block is positioned on the outer side of the clamping arms and on the two sides of the rear shaft, and the positioning of the rear shaft is more accurate through the limiting block, so that the measuring result is more accurate.
Further, in order to improve the service life of the gauge, the cylinder mounting seat, the equal-height seat, the rotating arm, the rotating shaft and the bottom plate are all made of tool steel materials.
Specifically, the invention also discloses an on-line automatic measuring method of the rear axle measuring gauge of the passenger car, which comprises the following steps:
Step a: selecting a data terminal communication mode;
Step b: acquiring a workpiece and placing the workpiece at a station;
step c: acquiring information of an operator and a workpiece;
Step d: selecting a mode of reading data by a data terminal;
step e: the control positioning module is used for positioning the workpiece;
step f: the clamping module is controlled to clamp the workpiece;
step g: controlling the data acquisition module to move to a working position and acquiring compressed data;
step h: acquiring control state information of a PLC control module;
Step i: judging control state information, and if the control state information allows measurement, acquiring and analyzing compressed data to obtain a measurement result; if the control state information does not allow measurement, the data terminal waits for the PLC control module to continue to control so as to reach the measurement allowing state;
Step j: judging the measurement result, if the measurement result is qualified, automatically controlling the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened by the PLC control module in sequence, and taking down the workpiece.
Further, the communication modes include industrial control communication and ordinary communication: if industrial control communication is selected, the data terminal needs to acquire and judge control state information of the PLC control module when reading compressed data acquired by the acquisition module, when the control state information allows the data terminal to measure, namely, the lifting module controls a workpiece to fall on a station, the positioning module is in a positioning state, the clamping module is in a clamping state, the data acquisition module is positioned at a working position, the data terminal starts to acquire and analyze the compressed data of the sensor head acquired by the data acquisition module, and when the data acquisition module is positioned at the working position, the displacement sensor head in the data acquisition module is respectively extruded with jackets at two ends of the taper pin sleeve and the clamping arm to generate compressed data; if the control state information does not allow the data terminal to measure, the PLC module does not control completely, and the data terminal continues to wait for the continuous control of the PLC control terminal to reach the measurement allowing state, and then the data terminal measures again to acquire and analyze the compressed data of the sensor head acquired by the data acquisition module; if the common communication is selected, the data terminal does not need to acquire the control state information of the PLC control module, and the data terminal can directly acquire and analyze the compressed data of the head of the displacement sensor acquired by the data acquisition module no matter whether the PLC control module has complete control or not.
Further, in order to more easily place the workpiece at a designated station on the gauge, the placing the workpiece at the station step includes: the lifting module is lifted firstly, the workpiece is placed on the lifting module, then the lifting module falls down, and the workpiece falls on the station.
Further, obtaining information of the operator and the workpiece includes manual input and code scanning input.
Further, the data terminal reading mode comprises an automatic mode and a manual mode, and if the data terminal reading mode is the automatic mode, the data terminal automatically carries out the bad measurement; if the data terminal reads the data in the manual mode, the data terminal manually measures the data in a single time.
Further, if the measurement result is not qualified, the data terminal re-acquires and analyzes the compressed data to obtain a second measurement result and judges the second measurement result, and if the second measurement result is qualified, the PLC control module automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence, and the workpiece is taken down; and if the second measurement result is unqualified, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence, and the workpiece is taken down.
The invention has the following advantages: 1) The invention has high positioning precision. 2) The invention can realize automatic measurement. 3) The measurement data is more comprehensive. 4) The invention is convenient to operate. 5) The invention can save manpower. 6) The invention has high measurement accuracy. 7) The measuring result of the invention is visual and easy to understand. 8) The invention can improve the measuring speed. 9) The invention can improve the production efficiency.
Drawings
FIG. 1 is a schematic diagram of a rear axle measuring gauge of the present invention;
FIG. 2 is a schematic diagram of a positioning module of the rear axle measuring gauge;
FIG. 3 is a schematic view of a rear axle measurement gauge clamping module;
FIG. 4 is a schematic diagram of a rear axle measurement gauge data acquisition module;
FIG. 5 is a schematic diagram of a lifting module of the rear axle measuring gauge;
FIG. 6 is a top view of the rear axle measurement gauge of the present invention;
FIG. 7 is a flow chart of an on-line automated measurement method for a rear axle inspection tool of a passenger car of the present invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Example 1
The embodiment 1 discloses a rear axle measuring gauge of a passenger car and an on-line automatic measuring method thereof, as shown in fig. 1, the gauge comprises a base 1, a positioning module 2, a clamping module 3 and a data acquisition module 4 are fixedly arranged on the base 1, the positioning module 2 is arranged in the middle of the base 1, the clamping module 3 and the data acquisition module 4 are symmetrically arranged about the positioning module 2, and the gauge further comprises a lifting module 5, and the lifting module 5 is symmetrically arranged about the positioning module 2; as shown in fig. 2, the positioning module 2 comprises a cylinder mounting seat 6, a positioning cylinder 7 and a rotating shaft 8, wherein the cylinder mounting seat 6 is fixedly arranged in the middle of the base 1, the positioning cylinder 7 is longitudinally and fixedly arranged on the cylinder mounting seat 6, the rotating shaft 8 is fixedly arranged on the base 1 and symmetrically arranged relative to the positioning cylinder 7, the head of a piston rod of the positioning cylinder 7 is provided with a connector 9, two sides of the connector 9 are respectively and rotatably connected with a rotating arm 10, the other end of the rotating arm 10 penetrates through the rotating shaft 8 and is fixedly connected with a taper pin 11, the rotating arm 10 is in clearance fit with the rotating shaft 8, the taper pin 11 is fixedly connected with the top end of a clamping arm 13 through a taper pin sleeve 12, and the bottom end of the clamping arm 13 is also provided with a jacket 26; as shown in fig. 3, the clamping module 3 comprises a clamping cylinder 14 and a clamp 15, the clamp 15 is fixedly connected with the end part of a piston rod of the clamping cylinder 14, the clamping cylinder 14 is fixedly arranged on the side wall of the base 1, the clamping cylinder 14 is symmetrically arranged on two sides of the positioning cylinder 7, and the head part of the clamp 15 is also provided with an S surface 25; as shown in fig. 4 and 6, the number of the data acquisition modules 4 is 4, the 4 data acquisition modules 4 can acquire data of 12 points on a rear axle, and compare the measured data of the 12 points with standard data to obtain a measurement result, the measured data is comprehensive, the measured result is more accurate, the data acquisition modules 4 comprise a measurement cylinder 16, an equal-height seat 17 and a displacement sensor 18, the equal-height seat 17 is fixedly arranged on the base 1, the equal-height seats 17 are symmetrically arranged on two sides of the positioning cylinder 7, the measurement cylinder 16 is fixedly arranged in the equal-height seat 17, the end part of the equal-height seat 17 is provided with a sliding rail 19, the sliding rail 19 is slidably provided with a sliding block 20, the displacement sensor 18 is fixedly arranged on the sliding block 20, and the end part of a piston rod of the measurement cylinder 16 is fixedly connected with the sliding block 20; as shown in fig. 5, the lifting module 5 includes a lifting cylinder 21 and a lifting plate 22, the end of the piston rod of the lifting cylinder 21 is fixedly connected with the bottom end of the lifting plate 22, the lifting cylinder 21 is symmetrically arranged at two sides of the positioning cylinder 7, a cylinder mounting hole 23 is formed in the base 1, and the lifting cylinder 21 is fixedly mounted in the cylinder mounting hole 23. As shown in fig. 6, a limiting block 24 is further provided on the base 1, and the limiting block 24 is fixedly installed on the base 1 through bolts. The cylinder mounting seat 6, the equal-height seat 17, the rotating arm 10, the rotating shaft 8 and the bottom plate 1 are all made of steel materials.
The invention also discloses an on-line automatic measuring method of the rear axle measuring gauge of the passenger car, and the flow chart of the method is shown in fig. 7, in the embodiment, the communication mode of the data terminal in step 101 is selected as industrial control communication, and the mode of reading data by the data terminal in step 104 is selected as an automatic mode.
Step 101, selecting a data terminal communication mode.
The communication mode of the data terminal is selected as industrial control communication, when the data terminal and the PLC control module are in communication with each other, the data terminal needs to acquire control state information of the PLC control module and judge the control state information before reading compressed data acquired by the acquisition module, when the control state information allows measurement, namely, the lifting module controls a workpiece to fall on a station, the positioning module is in a positioning state, the clamping module is in a clamping state, the data acquisition module is positioned at a working position, the data terminal starts to read and analyze the compressed data acquired by the data acquisition module, and meanwhile, the data terminal can transmit a measurement result back to the PLC control module.
Step 102, acquiring a workpiece and placing the workpiece at a station.
The step of placing the workpiece at the station comprises the steps of lifting the lifting module, placing the workpiece on the lifting module, and then descending the lifting module, wherein the workpiece falls on the station.
And 103, acquiring information of an operator and a workpiece.
The operator may enter information by manual entry or code scanning.
And 104, selecting a mode of reading data by the data terminal.
The mode of the data terminal for reading the data is selected as an automatic mode, and the data terminal automatically and circularly measures during measurement.
And 105, controlling the positioning module to position the workpiece, and executing step 106 after the positioning is finished.
And step 106, controlling the clamping module to clamp the workpiece, and executing step 107 after clamping.
And step 107, controlling the data acquisition module to move to a working position and acquiring compressed data.
The PLC control module controls the data acquisition module to move to a working position, the head of the displacement sensor of the data acquisition module is extruded with the taper pin sleeve and the jacket at the end part of the clamping arm respectively to be compressed, and the displacement sensor acquires compression data of the head.
And step 108, acquiring control state information of the PLC control module and judging whether the control state information allows measurement. If yes, go to step 110, if no, go to step 109.
And step 109, the data terminal waits for the PLC control module to continue to control so as to reach the measurement permission state.
And 110, automatically and circularly reading and analyzing the compressed data acquired by the data acquisition module by the data terminal to obtain a measurement result, and judging whether the measurement result is qualified or not.
The data terminal automatically and circularly collects the compressed data collected by the data collection module, compares the compressed data with the standard data, and if the collected compressed data is within the allowable error range of the standard data, the compressed data is qualified and jumps to execute step 112; if the collected compressed data is outside the allowable error range of the standard data, the collected compressed data is not qualified, step 111 is executed,
And step 111, repeating the measurement and judging whether the measurement result is qualified.
When the measurement result is unqualified, clicking a button of the data terminal for repeated measurement, repeatedly measuring by the data terminal, recovering and analyzing the compressed data acquired by the data acquisition module, judging whether the measurement result is qualified or not, and if so, executing step 112; if not, the process proceeds to step 113.
And step 112, the PLC control module sequentially and automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened. After release, step 114 is performed.
And 113, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence. After release, step 114 is performed.
Step 114, removing the workpiece.
The invention controls the lifting module, the positioning module, the clamping module and the data acquisition module to operate through the PLC control module, reads the compressed data acquired by the data acquisition module through the data terminal and compares the compressed data with the standard data to obtain a measurement result, wherein the data terminal can also acquire the control state information of the PLC control module, and realizes on-line automatic measurement, so that the invention has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and easily-understood measurement result, high measurement speed, high production efficiency and the like.
Example 2
The embodiment 2 discloses a passenger car rear axle measurement gauge and an online automatic measurement method thereof, wherein the gauge comprises a base 1, a positioning module 2, a clamping module 3 and a data acquisition module 4 are fixedly arranged on the base 1, the positioning module 2 is arranged in the middle of the base 1, the clamping module 3 and the data acquisition module 4 are symmetrically arranged about the positioning module 2, the gauge also comprises a lifting module 5, and the lifting module 5 is symmetrically arranged about the positioning module 2; the positioning module 2 comprises a cylinder mounting seat 6, a positioning cylinder 7 and a rotating shaft 8, wherein the cylinder mounting seat 6 is fixedly arranged in the middle of the base 1, the positioning cylinder 7 is fixedly arranged on the cylinder mounting seat 6 along the longitudinal direction, the rotating shaft 8 is fixedly arranged on the base 1, the rotating shaft 8 is symmetrically arranged about the positioning cylinder 7, the head of a piston rod of the positioning cylinder 7 is provided with a connector 9, two sides of the connector 9 are respectively and rotatably connected with a rotating arm 10, the other end of the rotating arm 10 penetrates through the rotating shaft 8 and is fixedly connected with a taper pin 11, the rotating arm 10 is in clearance fit with the rotating shaft 8, the taper pin 11 is fixedly connected with the top end of a clamping arm 13 through a taper pin sleeve 12, and the bottom end of the clamping arm 13 is also provided with a clamping sleeve 26; the clamping module 3 comprises a clamping cylinder 14 and a clamp 15, the clamp 15 is fixedly connected with the end part of a piston rod of the clamping cylinder 14, the clamping cylinder 14 is fixedly arranged on the side wall of the base 1, the clamping cylinder 14 is symmetrically arranged on two sides of the positioning cylinder 7, and the head part of the clamp 15 is also provided with an S surface 25; the number of the data acquisition modules 4 is 4, the 4 data acquisition modules 4 can acquire data of 12 points on a rear shaft, the measured data of the 12 points are compared with standard data to obtain a measurement result, the measured data are comprehensive, the measurement result is more accurate, the data acquisition modules 4 comprise a measurement cylinder 16, an equal-height seat 17 and a displacement sensor 18, the equal-height seat 17 is fixedly arranged on the base 1 and symmetrically arranged on two sides of the positioning cylinder 7, the measurement cylinder 16 is fixedly arranged in the equal-height seat 17, the end part of the equal-height seat 17 is provided with a sliding rail 19, the sliding rail 19 is slidably provided with a sliding block 20, the displacement sensor 18 is fixedly arranged on the sliding block 20, and the end part of a piston rod of the measurement cylinder 16 is fixedly connected with the sliding block 20; the lifting module 5 comprises a lifting cylinder 21 and a lifting plate 22, the end part of a piston rod of the lifting cylinder 21 is fixedly connected with the bottom end of the lifting plate 22, the lifting cylinder 21 is symmetrically arranged on two sides of the positioning cylinder 7, a cylinder mounting hole 23 is formed in the base 1, and the lifting cylinder 21 is fixedly arranged in the cylinder mounting hole 23; the base 1 is also provided with a limiting block 24, and the limiting block 24 is fixedly arranged on the base 1 through bolts. The cylinder mounting seat 6, the equal-height seat 17, the rotating arm 10, the rotating shaft 8 and the bottom plate 1 are all made of steel materials.
The invention also discloses an on-line automatic measuring method of the rear axle measuring gauge of the passenger car, and the flow of the method comprises the following steps that in the embodiment, the communication mode of the data terminal in the step 101 is selected as industrial control communication, and the mode of reading data by the data terminal in the step 104 is selected as manual mode.
Step 101, selecting a data terminal communication mode.
The communication mode of the data terminal is selected as industrial control communication, when the data terminal and the PLC control module are in communication with each other, the data terminal needs to acquire control state information of the PLC control module and judge the control state information before reading compressed data acquired by the acquisition module, when the control state information allows measurement, namely, the lifting module controls a workpiece to fall on a station, the positioning module is in a positioning state, the clamping module is in a clamping state, the data acquisition module is positioned at a working position, the data terminal starts to read and analyze the compressed data acquired by the data acquisition module, and meanwhile, the data terminal can transmit a measurement result back to the PLC control module.
Step 102, acquiring a workpiece and placing the workpiece at a station.
The step of placing the workpiece at the station comprises the steps of lifting the lifting module, placing the workpiece on the lifting module, and then descending the lifting module, wherein the workpiece falls on the station.
And 103, acquiring information of an operator and a workpiece.
The operator may enter information by manual entry or code scanning.
And 104, selecting a mode of reading data by the data terminal.
The mode of the data terminal for reading data is selected to be a manual mode, and when the data terminal is used for measuring, an operator needs to manually click a button of the data terminal for 'starting measuring' to perform one-time measurement.
And 105, controlling the positioning module to position the workpiece, and executing step 106 after the positioning is finished.
And step 106, controlling the clamping module to clamp the workpiece, and executing step 107 after clamping.
And step 107, controlling the data acquisition module to move to a working position and acquiring compressed data.
The PLC control module controls the data acquisition module to move to a working position, the head of the displacement sensor of the data acquisition module is extruded with the taper pin sleeve and the jacket at the end part of the clamping arm respectively to be compressed, and the displacement sensor acquires compression data of the head.
And step 108, acquiring control state information of the PLC control module and judging whether the control state information allows measurement. If yes, go to step 110, if no, go to step 109.
And step 109, the data terminal waits for the PLC control module to continue to control so as to reach the measurement permission state.
Step 110, the data terminal starts to read and analyze the compressed data acquired by the data acquisition module to obtain a measurement result and judges whether the measurement result is qualified or not by manually clicking a button of the data terminal for starting measurement.
The data terminal automatically and circularly collects the compressed data collected by the data collection module, compares the compressed data with the standard data, and if the collected compressed data is within the allowable error range of the standard data, the compressed data is qualified and jumps to execute step 112; if the collected compressed data is outside the allowable error range of the standard data, the collected compressed data is not qualified, and step 111 is executed.
And step 111, repeating the measurement and judging whether the measurement result is qualified.
When the measurement result is unqualified, clicking a button of the data terminal for repeated measurement, repeatedly measuring by the data terminal, recovering and analyzing the compressed data acquired by the data acquisition module, judging whether the measurement result is qualified or not, and if so, executing step 112; if not, the process proceeds to step 113.
And step 112, the PLC control module sequentially and automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened. After release, step 114 is performed.
And 113, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence. After release, step 114 is performed.
Step 114, removing the workpiece.
The invention controls the lifting module, the positioning module, the clamping module and the data acquisition module to operate through the PLC control module, reads the compressed data acquired by the data acquisition module through the data terminal and compares the compressed data with the standard data to obtain a measurement result, wherein the data terminal can also acquire the control state information of the PLC control module, and realizes on-line automatic measurement, so that the invention has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and easily-understood measurement result, high measurement speed, high production efficiency and the like.
Example 3
The embodiment 3 discloses a passenger car rear axle measurement gauge and an online automatic measurement method thereof, wherein the gauge comprises a base 1, a positioning module 2, a clamping module 3 and a data acquisition module 4 are fixedly arranged on the base 1, the positioning module 2 is arranged in the middle of the base 1, the clamping module 3 and the data acquisition module 4 are symmetrically arranged about the positioning module 2, the gauge also comprises a lifting module 5, and the lifting module 5 is symmetrically arranged about the positioning module 2; the positioning module 2 comprises a cylinder mounting seat 6, a positioning cylinder 7 and a rotating shaft 8, wherein the cylinder mounting seat 6 is fixedly arranged in the middle of the base 1, the positioning cylinder 7 is fixedly arranged on the cylinder mounting seat 6 along the longitudinal direction, the rotating shaft 8 is fixedly arranged on the base 1, the rotating shaft 8 is symmetrically arranged about the positioning cylinder 7, the head of a piston rod of the positioning cylinder 7 is provided with a connector 9, two sides of the connector 9 are respectively and rotatably connected with a rotating arm 10, the other end of the rotating arm 10 penetrates through the rotating shaft 8 and is fixedly connected with a taper pin 11, the rotating arm 10 is in clearance fit with the rotating shaft 8, the taper pin 11 is fixedly connected with the top end of a clamping arm 13 through a taper pin sleeve 12, and the bottom end of the clamping arm 13 is also provided with a clamping sleeve 26; the clamping module 3 comprises a clamping cylinder 14 and a clamp 15, the clamp 15 is fixedly connected with the end part of a piston rod of the clamping cylinder 14, the clamping cylinder 14 is fixedly arranged on the side wall of the base 1, the clamping cylinder 14 is symmetrically arranged on two sides of the positioning cylinder 7, and the head part of the clamp 15 is also provided with an S surface 25; the number of the data acquisition modules 4 is 4, the 4 data acquisition modules 4 can acquire data of 12 points on a rear shaft, the measured data of the 12 points are compared with standard data to obtain a measurement result, the measured data are comprehensive, the measurement result is more accurate, the data acquisition modules 4 comprise a measurement cylinder 16, an equal-height seat 17 and a displacement sensor 18, the equal-height seat 17 is fixedly arranged on the base 1 and symmetrically arranged on two sides of the positioning cylinder 7, the measurement cylinder 16 is fixedly arranged in the equal-height seat 17, the end part of the equal-height seat 17 is provided with a sliding rail 19, the sliding rail 19 is slidably provided with a sliding block 20, the displacement sensor 18 is fixedly arranged on the sliding block 20, and the end part of a piston rod of the measurement cylinder 16 is fixedly connected with the sliding block 20; the lifting module 5 comprises a lifting cylinder 21 and a lifting plate 22, the end part of a piston rod of the lifting cylinder 21 is fixedly connected with the bottom end of the lifting plate 22, the lifting cylinder 21 is symmetrically arranged on two sides of the positioning cylinder 7, a cylinder mounting hole 23 is formed in the base 1, and the lifting cylinder 21 is fixedly arranged in the cylinder mounting hole 23; the base 1 is also provided with a limiting block 24, and the limiting block 24 is fixedly arranged on the base 1 through bolts. The cylinder mounting seat 6, the equal-height seat 17, the rotating arm 10, the rotating shaft 8 and the bottom plate 1 are all made of steel materials.
The invention also discloses an on-line automatic measuring method of the rear axle measuring gauge of the passenger car, and the flow of the method comprises the following steps that in the embodiment, the communication mode of the data terminal in the step 101 is selected as common communication, and the mode of the data terminal in the step 104 for reading data is selected as automatic mode.
Step 101, selecting a data terminal communication mode.
The communication mode of the data terminal is selected as common communication, the data terminal and the PLC control module are not communicated with each other in working, and the data terminal can directly read and analyze the compressed data acquired by the data acquisition module without acquiring and judging the control state information of the PLC control module in measurement.
Step 102, acquiring a workpiece and placing the workpiece at a station.
The step of placing the workpiece at the station comprises the steps of lifting the lifting module, placing the workpiece on the lifting module, and then descending the lifting module, wherein the workpiece falls on the station.
And 103, acquiring information of an operator and a workpiece.
The operator may enter information by manual entry or code scanning.
And 104, selecting a mode of reading data by the data terminal.
The data terminal reads the data mode and selects the automatic mode, and the data terminal automatically and circularly measures during measurement.
And 105, controlling the positioning module to position the workpiece, and executing step 106 after the positioning is finished.
And step 106, controlling the clamping module to clamp the workpiece, and executing step 107 after clamping.
And step 107, controlling the data acquisition module to move to a working position and acquiring compressed data.
The PLC control module controls the data acquisition module to move to a working position, the head of the displacement sensor of the data acquisition module and the gauge are extruded and compressed, and the displacement sensor acquires compressed data of the head.
And step 108, the data terminal automatically and circularly reads and analyzes the compressed data acquired by the data acquisition module to obtain a measurement result, and judges whether the measurement result is qualified or not.
The data terminal collects the compressed data collected by the data collection module, compares the compressed data with the standard data, and if the collected compressed data is within the allowable error range of the standard data, the compressed data is qualified, and the step 110 is skipped; if the collected compressed data is outside the allowable error range of the standard data, the data is not qualified, step 109 is executed,
And step 109, repeating the measurement and judging whether the measurement result is qualified.
When the measurement result is unqualified, clicking a button of the data terminal for repeated measurement, repeatedly measuring by the data terminal, recovering and analyzing the compressed data acquired by the data acquisition module, judging whether the measurement result is qualified or not, and if so, executing the step 110; if not, the process proceeds to step 111.
And 110, the PLC control module sequentially and automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened. After release, step 112 is performed.
And step 111, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence. After release, step 112 is performed.
And 112, removing the workpiece.
The invention controls the operation of the lifting module, the positioning module, the clamping module and the data acquisition module through the PLC control module, reads the compressed data acquired by the data acquisition module through the data terminal and compares the compressed data with the standard data to obtain the measurement result, and realizes the on-line automatic measurement, thereby the invention has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and easily understood measurement result, high measurement speed, high production efficiency and the like.
Example 4
The embodiment 4 discloses a passenger car rear axle measurement gauge and an online automatic measurement method thereof, wherein the gauge comprises a base 1, a positioning module 2, a clamping module 3 and a data acquisition module 4 are fixedly arranged on the base 1, the positioning module 2 is arranged in the middle of the base 1, the clamping module 3 and the data acquisition module 4 are symmetrically arranged about the positioning module 2, the gauge also comprises a lifting module 5, and the lifting module 5 is symmetrically arranged about the positioning module 2; the positioning module 2 comprises a cylinder mounting seat 6, a positioning cylinder 7 and a rotating shaft 8, wherein the cylinder mounting seat 6 is fixedly arranged in the middle of the base 1, the positioning cylinder 7 is fixedly arranged on the cylinder mounting seat 6 along the longitudinal direction, the rotating shaft 8 is fixedly arranged on the base 1, the rotating shaft 8 is symmetrically arranged about the positioning cylinder 7, the head of a piston rod of the positioning cylinder 7 is provided with a connector 9, two sides of the connector 9 are respectively and rotatably connected with a rotating arm 10, the other end of the rotating arm 10 penetrates through the rotating shaft 8 and is fixedly connected with a taper pin 11, the rotating arm 10 is in clearance fit with the rotating shaft 8, the taper pin 11 is fixedly connected with the top end of a clamping arm 13 through a taper pin sleeve 12, and the bottom end of the clamping arm 13 is also provided with a clamping sleeve 26; the clamping module 3 comprises a clamping cylinder 14 and a clamp 15, the clamp 15 is fixedly connected with the end part of a piston rod of the clamping cylinder 14, the clamping cylinder 14 is fixedly arranged on the side wall of the base 1, the clamping cylinder 14 is symmetrically arranged on two sides of the positioning cylinder 7, and the head part of the clamp 15 is also provided with an S surface 25; the number of the data acquisition modules 4 is 4, the 4 data acquisition modules 4 can acquire data of 12 points on a rear shaft, the measured data of the 12 points are compared with standard data to obtain a measurement result, the measured data are comprehensive, the measurement result is more accurate, the data acquisition modules 4 comprise a measurement cylinder 16, an equal-height seat 17 and a displacement sensor 18, the equal-height seat 17 is fixedly arranged on the base 1 and symmetrically arranged on two sides of the positioning cylinder 7, the measurement cylinder 16 is fixedly arranged in the equal-height seat 17, the end part of the equal-height seat 17 is provided with a sliding rail 19, the sliding rail 19 is slidably provided with a sliding block 20, the displacement sensor 18 is fixedly arranged on the sliding block 20, and the end part of a piston rod of the measurement cylinder 16 is fixedly connected with the sliding block 20; the lifting module 5 comprises a lifting cylinder 21 and a lifting plate 22, the end part of a piston rod of the lifting cylinder 21 is fixedly connected with the bottom end of the lifting plate 22, the lifting cylinder 21 is symmetrically arranged on two sides of the positioning cylinder 7, a cylinder mounting hole 23 is formed in the base 1, and the lifting cylinder 21 is fixedly arranged in the cylinder mounting hole 23; the base 1 is also provided with a limiting block 24, and the limiting block 24 is fixedly arranged on the base 1 through bolts. The cylinder mounting seat 6, the equal-height seat 17, the rotating arm 10, the rotating shaft 8 and the bottom plate 1 are all made of steel materials.
The invention also discloses an on-line automatic measuring method of the rear axle measuring gauge of the passenger car, and the flow of the method comprises the following steps that in the embodiment, the communication mode of the data terminal in the step 101 is selected as common communication, and the mode of reading data by the data terminal in the step 104 is selected as manual mode.
Step 101, selecting a data terminal communication mode.
The communication mode of the data terminal is selected as common communication, the data terminal and the PLC control module are not communicated with each other in working, and the data terminal can directly read and analyze the compressed data acquired by the data acquisition module without acquiring and judging the control state information of the PLC control module in measurement.
Step 102, acquiring a workpiece and placing the workpiece at a station.
The step of placing the workpiece at the station comprises the steps of lifting the lifting module, placing the workpiece on the lifting module, and then descending the lifting module, wherein the workpiece falls on the station.
And 103, acquiring information of an operator and a workpiece.
The operator may enter information by manual entry or code scanning.
And 104, selecting a mode of reading data by the data terminal.
The data terminal is selected to be in a manual mode, and when the data terminal reads data, an operator needs to manually click a button of the data terminal for measuring at the beginning to perform one measurement.
And 105, controlling the positioning module to position the workpiece, and executing step 106 after the positioning is finished.
And step 106, controlling the clamping module to clamp the workpiece, and executing step 107 after clamping.
And step 107, controlling the data acquisition module to move to a working position and acquiring compressed data.
The PLC control module controls the data acquisition module to move to a working position, the head of the displacement sensor of the data acquisition module and the gauge are extruded and compressed, and the displacement sensor acquires compressed data of the head.
And step 108, manually clicking a button of the data terminal for starting measurement, starting reading and analyzing the compressed data acquired by the data acquisition module by the data terminal, obtaining a measurement result, and judging whether the measurement result is qualified or not.
The data terminal collects the compressed data collected by the data collection module, compares the compressed data with the standard data, and if the collected compressed data is within the allowable error range of the standard data, the compressed data is qualified, and the step 110 is skipped; if the collected compressed data is outside the allowable error range of the standard data, the data is not qualified, step 109 is executed,
And step 109, repeating the measurement and judging whether the measurement result is qualified.
When the measurement result is unqualified, clicking a button of the data terminal for repeated measurement, repeatedly measuring by the data terminal, recovering and analyzing the compressed data acquired by the data acquisition module, judging whether the measurement result is qualified or not, and if so, executing the step 110; if not, the process proceeds to step 111.
And 110, the PLC control module sequentially and automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened. After release, step 112 is performed.
And step 111, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence. After release, step 112 is performed.
And 112, removing the workpiece.
The invention controls the operation of the lifting module, the positioning module, the clamping module and the data acquisition module through the PLC control module, reads the compressed data acquired by the data acquisition module through the data terminal and compares the compressed data with the standard data to obtain the measurement result, and realizes the on-line automatic measurement, thereby the invention has the characteristics of high positioning precision, automatic measurement, more comprehensive measured data, convenient operation, manpower saving, high measurement precision, visual and easily understood measurement result, high measurement speed, high production efficiency and the like.
Claims (8)
1. The on-line automatic measurement method of the passenger car rear axle measurement gauge is characterized in that the gauge comprises a base, a positioning module, a clamping module and a data acquisition module are fixedly arranged on the base, the positioning module is arranged in the middle of the base, the clamping module and the data acquisition module are symmetrically arranged relative to the positioning module, and the on-line automatic measurement method further comprises a lifting module which is symmetrically arranged relative to the positioning module; the positioning module comprises a cylinder mounting seat, a positioning cylinder and a rotating shaft, wherein the cylinder mounting seat is fixedly arranged in the middle of the base, the positioning cylinder is longitudinally and fixedly arranged on the cylinder mounting seat, the rotating shaft is fixedly arranged on the base and symmetrically arranged relative to the positioning cylinder, the head of a piston rod of the positioning cylinder is provided with a connector, two sides of the connector are respectively and rotatably connected with a rotating arm, the other end of the rotating arm penetrates through the rotating shaft and is fixedly connected with a taper pin, the rotating arm is in clearance fit with the rotating shaft, the taper pin is fixedly connected with the top end of a clamping arm through a taper pin sleeve, and the bottom end of the clamping arm is also provided with a clamping sleeve; the clamping module comprises a clamping cylinder and a clamp, the clamp is fixedly connected with the end part of a piston rod of the clamping cylinder, the clamping cylinder is fixedly arranged on the side wall of the base, the clamping cylinder is symmetrically arranged on two sides of the positioning cylinder, and the head part of the clamp is also provided with an S surface; the number of the data acquisition modules is 4, the 4 data acquisition modules can acquire data of 12 points on the rear axle and compare the measured data of the 12 points with standard data to obtain a measurement result, the measured data are comprehensive, the measurement result is more accurate, the data acquisition modules comprise a measurement cylinder, an equal-height seat and a displacement sensor, the equal-height seat is fixedly arranged on a base and symmetrically arranged on two sides of a positioning cylinder, the measurement cylinder is fixedly arranged in the equal-height seat, the end part of the equal-height seat is provided with a sliding rail, the sliding rail is slidingly provided with a sliding block, the displacement sensor is fixedly arranged on the sliding block, the end part of a piston rod of the measurement cylinder is fixedly connected with the sliding block, the lifting module comprises a lifting cylinder and a lifting plate, the end part of the piston rod of the lifting cylinder is fixedly connected with the bottom end part of the lifting plate, the lifting cylinder is symmetrically arranged on two sides of the positioning cylinder, the base is provided with a cylinder mounting hole, the base is also provided with a limiting block, the limiting block is fixedly arranged on the base through a bolt, and the cylinder mounting seat, the equal-height seat, the rotating arm and the rotating shaft and the bottom plate are all made of steel materials;
The communication mode of the data terminal is selected as industrial control communication, when the data terminal and the PLC control module are in communication with each other, the data terminal needs to acquire control state information of the PLC control module and judge the control state information before reading compressed data acquired by the acquisition module, when the control state information allows measurement, namely, the lifting module controls a workpiece to fall on a station, the positioning module is in a positioning state, the clamping module is in a clamping state, the data acquisition module is positioned at a working position, the data terminal starts to read and analyze the compressed data acquired by the data acquisition module, and meanwhile, the data terminal can transmit a measurement result back to the PLC control module.
2. The on-line automatic measurement method of a passenger car rear axle measurement gauge according to claim 1, characterized in that the on-line automatic measurement method of the passenger car rear axle measurement gauge comprises the following operation steps:
Step a: selecting a data terminal communication mode;
Step b: acquiring a workpiece and placing the workpiece at a station;
Step c: acquiring information of an operator and the workpiece;
step d: selecting a mode of reading data by the data terminal;
step e: the control positioning module is used for positioning the workpiece;
step f: controlling a clamping module to clamp the workpiece;
step g: controlling the data acquisition module to move to a working position and acquiring compressed data;
step h: acquiring control state information of a PLC control module;
Step i: judging the control state information, and if the control state information allows measurement, acquiring and analyzing the compressed data by the data terminal to obtain a measurement result; if the control state information does not allow measurement, the data terminal waits for the PLC control module to continue to control so as to reach a state allowing measurement;
Step j: and judging the measurement result, and if the measurement result is qualified, automatically controlling the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence by the PLC control module, and taking down the workpiece.
3. The on-line automatic measurement method of the passenger car rear axle measurement gauge according to claim 2, wherein the communication mode in the step a comprises industrial control communication and ordinary communication, if the communication mode is industrial control communication, the data terminal obtains control state information of the PLC control module and judges, if the control state information allows measurement, the data terminal obtains and analyzes the compressed data to obtain a measurement result, if the control state information does not allow measurement, the data terminal waits for the PLC control module to continue to control so as to achieve a state allowing measurement, and if the communication mode is ordinary communication, the data terminal directly obtains the compressed data.
4. The on-line automatic measurement method of the rear axle measurement gauge of the passenger car according to claim 2, wherein the control state information allowing measurement in the step i is that the lifting module controls the workpiece to fall on a station, the positioning module is in a positioning state, the clamping module is in a clamping state, and the data acquisition module is located at a working position.
5. The on-line automated measurement method of a rear axle measurement gauge for a passenger car according to claim 2, wherein the step of placing the workpiece in the station in the step b comprises: the lifting module ascends to place the workpiece on the lifting module, the lifting module descends, and the workpiece falls on the station.
6. The on-line automatic measurement method of the rear axle measurement gauge for the passenger car according to claim 2, wherein the step c of obtaining the information of the operator and the workpiece comprises two modes of manual input and code scanning input.
7. The on-line automatic measurement method of the rear axle measurement gauge of the passenger car according to claim 2, wherein the mode of reading data by the data terminal in the step d comprises an automatic mode and a manual mode, and if the mode of reading data by the data terminal is the automatic mode, the data terminal automatically performs the bad measurement; and if the mode of reading the data by the data terminal is the manual mode, the data terminal manually performs single measurement.
8. The on-line automated measurement method of a rear axle measurement gauge for a passenger car of claim 2, wherein the step j further comprises: if the measurement result is unqualified, the data terminal re-acquires and analyzes the compressed data to obtain a second measurement result and judges the second measurement result, and if the second measurement result is qualified, the PLC control module sequentially and automatically controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened, and the workpiece is taken down; and if the second measurement result is unqualified, the PLC control module forcedly controls the data acquisition module, the clamping module, the positioning module and the lifting module to be loosened in sequence, and the workpiece is taken down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810590468.9A CN108534737B (en) | 2018-06-09 | 2018-06-09 | Measuring gauge for rear axle of passenger car and on-line automatic measuring method thereof |
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| CN201810590468.9A CN108534737B (en) | 2018-06-09 | 2018-06-09 | Measuring gauge for rear axle of passenger car and on-line automatic measuring method thereof |
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