CN102538654B - Cylindrical part wall thickness auto-measurement device and measurement method - Google Patents
Cylindrical part wall thickness auto-measurement device and measurement method Download PDFInfo
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- CN102538654B CN102538654B CN201110439236.1A CN201110439236A CN102538654B CN 102538654 B CN102538654 B CN 102538654B CN 201110439236 A CN201110439236 A CN 201110439236A CN 102538654 B CN102538654 B CN 102538654B
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Abstract
The invention discloses a cylindrical part wall thickness auto-measurement device and a measurement method. The cylindrical part wall thickness auto-measurement device comprises a slide bottom plate (3), a measuring mechanism, a charging and discharging mechanism and an upper computer, wherein the measuring mechanism and the charging and discharging mechanism are fixed on the slide bottom plate (3). The measuring mechanism is used for measuring the wall thickness of a cylindrical part. The charging and discharging mechanism is used for cyclically charging and discharging the measuring mechanism. The upper computer is used for processing and displaying measurement data of the wall thickness. The invention further provides the cylindrical part wall thickness auto-measurement method, which is a continuous measurement method capable of measuring a maximum and a minimum of a circle of a cylindrical wall, the average thickness of the cylindrical wall can be solved with the upper computer connected, measurement precision is high, measurement errors are few, measurement range is insusceptible to part wall thickness, and measurement is convenient and quick. In addition, the cylindrical part wall thickness auto-measurement device is low in manufacturing cost, high in operating efficiency and high in automation level and can be used for automatically measuring the wall thickness of cylindrical parts.
Description
Technical field
The present invention relates to wall thickness measuring field, particularly a kind of cylindrical part wall thickness auto-measurement device and measuring method.
Background technology
At present, the thicknessmeter of widespread use mainly contains following five classes: 1. hand-held milscale thicknessmeter.Utilize miking thickness, this hand measuring method is comparatively traditional, and automaticity is low, and when measuring part thickness in enormous quantities, length consuming time, inefficiency, due to human eye reading, has error unavoidably.2. magnetic thickness tester.Magnetic Methods is utilized to carry out thickness measure to nonferromugnetic material.During thickness measuring, magnetic probe is placed in the one side of measured material, and corresponding steel ball is placed in another side, the hall effect sensor on probe can measure the distance of probe point to steel ball, thus provides digital thickness reading.But magnetic thickness tester poor anti jamming capability, high-frequency signal, commercial power circuit all can produce interference to it, and measuring accuracy is also by temperature, humidity effect in addition, and automaticity is low.3. supersonic thickness meter.Thickness measure is carried out according to Ultrasonic Pulse-Echo principle, when the ultrasonic pulse launched when popping one's head in arrives material interface by testee, pulse is reflected back toward probe, determines the thickness of measured material by measuring ultrasound wave time of propagating in the material.Measured material must meet ultrasound wave and this principle just can be adopted to measure with the various materials that a constant speed is propagated therein, and supersonic thickness meter is often because the factor such as wearing and tearing, couplant in temperature, stress, probe contacts face causes readout inaccurate, measurement has comparatively big error, measuring accuracy is lower, simultaneously detect thickness restricted (wall thickness could be measured at more than 1mm).4. laser thickness gauge.Be a kind of instrument utilizing laser to carry out measuring object thickness, use the laser-correlation of two laser displacement sensors, measured body is placed in correlation region, according to the distance measuring measured body upper surface and lower surface, calculates the thickness of measured body.But it is comparatively large that difficulty manufactured by instrument, and cost is higher, and optical system needs to keep clean, otherwise impact is measured.Can not there be barrier centre, have receiver, because the feedback signal change of light can not measure mobile object too greatly.5. eddy current coating thickness tester.When gauge head contacts with tested style, the electromagnetic field of high frequency that gauge head unit produces, the metallic conductor making to be placed under gauge head produces eddy current, its amplitude and phase place are the functions of non-conductive cover thickness between conductor and gauge head. the alternating electromagnetic field that namely this eddy current produces can change gauge head parameter, and the size of gauge head parametric variable, and by this electric signal conversion process, the thickness of tested coated layer can be obtained.But eddy current thickness meter measures style exists edge effect, be insecure, and automaticity is lower, cannot carry out measure batch, measures type and be also restricted, be not suitable for cylindrical component wall thickness measuring the measurement near style edge or inside lock place.
Five above-mentioned class thicknessmeters have comparatively proven technique have more detailed introduction in many sections of pertinent literatures at present, but these thickness measuring instruments all exist respective deficiency, and measure type and be restricted, especially to the measurement of cylindrical component wall thickness.During current measurement cylindrical component wall thickness, mostly adopt hand-held milscale thicknessmeter, utilize milscale to survey internal diameter and the method for surveying external diameter obtains internal diameter and the external diameter of tube wall respectively, it has been exactly thickness of pipe divided by two again that two values are subtracted each other.The numerical value that this measuring method records is often accurate, there is comparatively big error, needs to utilize error analysis principle, and internal diameter external diameter is averaged after repetitive measurement respectively, just can obtain relatively accurate numerical value.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention proposes a kind of cylindrical part wall thickness auto-measurement device and measuring method, automatic measurement can be realized easily, and judge whether qualified cylindrical component wall thickness is, and this invention advantage of lower cost, work efficiency is high, wall thickness measuring is carried out mainly for cylindrical components such as pipe fittings, measurement size is not substantially by the restriction of wall thickness dimension, adopt method for continuous measuring, the barrel maximal value of a week and minimum value can be measured, also can be obtained the average thickness of barrel by the host computer connected; Measuring accuracy is high, and measuring error is little.
The present invention adopts following technical scheme to realize:
A kind of cylindrical part wall thickness auto-measurement device, comprises slide base plate (3), is fixed on measuring mechanism, charging and discharging mechanism on described slide base plate (3), host computer; Described measuring mechanism completes the measurement of cylindrical component wall thickness; Described charging and discharging mechanism completes the circulation feeding, discharge function to measuring mechanism; Described host computer process and display wall thickness measuring data.
Described cylindrical part wall thickness auto-measurement device, described measuring mechanism comprises support bar (17) and inductance displacement sensor (7); Tested part is supported by support bar (17), and support bar (17) rotates under power drive, described inductance displacement sensor (7) the continuous coverage tested part wall thickness of a week.
Described cylindrical part wall thickness auto-measurement device, described measuring mechanism also comprises the first hydraulic cylinder (1), slide (28), column (10), feather key (23), motor (9), transition axis (14), driving wheel (15), the first engaged wheel (24), the second engaged wheel (25); Described first hydraulic cylinder (1) is fixed on described slide base plate (3) lower end; Described slide (28) coordinates with described column (10) to be installed; Described slide (28) has feather key (23), described slide (28) can move up and down along feather key (23) direction; Described support bar (17) runs through described column (10) and described slide (28) interference fit; Described motor (9) is arranged on described column (10) side; Described transition axis (14) runs through motor mounting plate (13), and one end is fixedly connected with described motor (9), and the other end is fixedly connected with driving wheel (15).
Described cylindrical part wall thickness auto-measurement device, described charging and discharging mechanism comprises chute plate (4) and the first sliding board-type guide plate (5), the second sliding board-type guide plate (6), the second hydraulic cylinder (21), web joint (19), magnechuck (18); Described chute plate (4) is fixedly mounted on described slide base plate (3); Described first sliding board-type guide plate (5), the second sliding board-type guide plate (6) are staggered installation of on described slide base plate (3); Described web joint (19) one end is fixedly connected with the second hydraulic cylinder piston rod (20), and the other end is fixedly connected with magnechuck (18).
Invention further provides a kind of cylindrical component wall thickness method for automatic measurement: comprise the following steps: (A1) measured circle cylindrical part tumbles chute plate groove location by chute plate (4), second hydraulic cylinder piston rod (20) drives magnechuck (18) driven forward workpiece to move forward one stroke, makes tested part be placed on support bar (17) and goes up and be in position to be measured; (A2) the first hydraulic cylinder piston rod moves, band is actively tied on the slide (28) in column (10) endoporus and moves to a fixed position, tested part compression inductance displacement sensor (7) gauge head spring also makes it to reach certain pretension amount, make exterior surface two engaged wheels contact of workpiece and the spring on compression motor installing plate guide rod (12), permanent magnet low-speed motor (9) is rotated by the friction of driving wheel (15) and the first engaged wheel (24) and the first engaged wheel (24) and the friction belt of outer surface of workpiece part of starting building simultaneously.(A3) rotating speed of permanent magnet low-speed motor (9) is 60r/min, ratio of gear is designed to 1: 1, a whole circle wall thickness can be measured like this within 1 second, the sample frequency of inductance displacement sensor (7) is set as 2000Hz, there is A/D conversion circuit inside, the digital signal exported is processed by the host computer be connected with sensor, can demonstrate the maximal value of this part wall thickness, minimum value and mean value; (A4) after tested part wall thickness measuring completes, magnechuck (18) energising of the second hydraulic cylinder piston rod (20) front end, after holding workpiece, sliding board-type blanking guide plate position is moved on to after second hydraulic cylinder piston rod (20), magnechuck (18) power-off, tested part is tumbled in piece installing case by sliding board-type guide plate.
On the basis of above-mentioned cylindrical component wall thickness method for automatic measurement, present invention also offers the decision method that whether qualified a kind of part wall thickness is, mainly comprise the following steps, standardized element is placed on support bar (17) by (B1); (B2) slide (28) under the effect of the first hydraulic cylinder (1) on move on to measuring position; (B3) inductance displacement sensor (7) the continuous coverage wall thickness of a week, output digit signals, to host computer, demonstrates wall thickness range and the mean value of this part.(B4) after standard component wall thickness range is demarcated, can judge that whether tested part is qualified, if tested part wall thickness value is within standard component wall thickness bound scope, then part is qualified, and now tested part is driven by charging and discharging mechanism and completes blanking to the first sliding board-type guide plate (5) position; Otherwise tested part is driven to the second sliding board-type guide plate (6) position blanking by charging and discharging mechanism.
The invention has the beneficial effects as follows: the present invention carries out wall thickness measuring mainly for cylindrical component, measurement size is not substantially by the restriction of wall thickness dimension, this invention manufacturing cost is relatively low, work efficiency is high, measuring accuracy is high, automaticity is high, can realize the automatic measurement of cylindrical component wall thickness.
Accompanying drawing explanation
Fig. 1 is a kind of cylindrical part wall thickness auto-measurement device front view;
Fig. 2 is a kind of cylindrical part wall thickness auto-measurement device left view;
Fig. 3 is a kind of cylindrical part wall thickness auto-measurement device axonometric drawing;
Fig. 4 is the axonometric drawing after a kind of cylindrical part wall thickness auto-measurement device hides column;
Fig. 5 is a kind of A-A sectional view of cylindrical part wall thickness auto-measurement device;
Fig. 6 is the axonometric drawing loading onto wall thickness self-operated measuring unit after cartridge case part;
In figure: 1-first hydraulic cylinder, 2-first cylinder mount plate, 3-slide base plate, 4-chute plate, 5-first sliding board-type guide plate, 6-second sliding board-type guide plate, 7-inductance displacement sensor, 8-clamp of sensor, 9-motor, 10-column, 11-fixed strip, 12-guide rod, 13-motor mounting plate, 14-transition axis, 15-driving wheel, 16-driving wheel compress gasket, 17-support bar, 18-magnechuck, 19-web joint, 20-second hydraulic cylinder piston rod, 21-second hydraulic cylinder, 22-second cylinder mount plate, 23-feather key, 24-first engaged wheel, 25-second engaged wheel, 26-engaged wheel support bar, 27-support slipper, 28-slide, the tested cartridge case part of 29-, 30-driving wheel gland nut.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
With reference to Fig. 1-Fig. 5, a kind of part wall thickness self-operated measuring unit, designs mainly for cylindrical component, comprises slide base plate 3, is fixed on measuring mechanism on described slide base plate 3 and charging and discharging mechanism, host computer.Described measuring mechanism completes the measurement of cylindrical component wall thickness; Described charging and discharging mechanism completes continuous feed to measuring mechanism and blanking function; Described Liang Zhong mechanism forms the wall thickness measuring device of complete set; Host computer process and display wall thickness measuring data.
Described measuring mechanism comprises the first hydraulic cylinder 1, first cylinder mount plate 2, slide 28, column 10, feather key 23, inductance displacement sensor 7, clamp of sensor 8, motor 9, transition axis 14, driving wheel 15, driving wheel compress gasket 16, driving wheel gland nut 30, motor mounting plate 13, fixed strip 11, guide rod 12, support bar 17, support slipper 27, first engaged wheel 24 and the second engaged wheel 25, two engaged wheel support bars 26.
Described first hydraulic cylinder 1 is fixed on described slide base plate 3 lower end by described first cylinder mount plate 2; Described slide 28 uses small―gap suture to coordinate with described column 10 and installs; Described slide 28 has feather key 23, and described slide 28 can move up and down along feather key 23 direction, and the Main Function of described feather key 23 is that skew transposition occurs when preventing described slide 28 from moving up and down; Described fixed strip 11 is provided with two threaded holes, is arranged on described column 10 by screw; Described fixed strip 11 is connected by guide rod 12 with described motor mounting plate 13, described guide rod 12 has spring around, meet the aeroelastic requirements of mechanism, guide rod 12 upper end is fixed on fixed strip 11 by nut; Described support bar 17 runs through described column 10 and described slide 28 interference fit; Described support slipper 27 and described support bar 17 interference fit, described support slipper 27 exceeds support bar 17 1 segment distance, and the material manufacture that described support slipper 27 selects hardness higher, heat-treat, increase anti-wear performance; Described motor 9 is arranged on described column 10 side by described motor mounting plate 13.Described motor 9 adopts permanent magnet low-speed stepper motor, rotational frequency about 1 revolutions per second; Described transition axis 14 runs through motor mounting plate 13, and one end is fixedly connected with described motor 9, and the other end is fixedly connected with driving wheel 15 by driving wheel gland nut 30, and described driving wheel is lined with driving wheel compress gasket 16 15 times; Described engaged wheel support bar 26 one end is fixedly mounted on described motor mounting plate 13, the first engaged wheel 24 other end is equipped with, described first engaged wheel 24 is fixedly connected with by holding screw with engaged wheel support bar 26, described engaged wheel adopts deep groove ball bearing, glue through foreign steamer and mould process, add the friction factor of foreign steamer, thus make wheel have more wear-resisting effect.Described clamp of sensor 8 to be coordinated with described column 10 by screw to be installed, and the manufacture of described clamp of sensor 8 adopts nonmetallic materials, impacts in order to avoid measure described inductance displacement sensor 7; Described inductance displacement sensor 7 comprises measuring staff and gauge head, and described inductance displacement sensor 7 coordinates with described clamp of sensor 8 to be installed, and described host computer is connected with described inductance displacement sensor 7, process and display wall thickness measuring data.
Described charging and discharging mechanism comprises chute plate 4, first sliding board-type guide plate 5, second sliding board-type guide plate 6, second hydraulic cylinder 21, second cylinder mount plate 22, web joint 19, magnechuck 18.
Described chute plate 4 is fixedly mounted on described slide base plate 3 by screw; Described two sliding board-type guide plates 5,6 are staggered installation of on described slide base plate 3, are convenient to the blanking of different size part; Described second cylinder mount plate 22 is fixed on described slide base plate 3, vertical with described slide base plate 3, described second hydraulic cylinder 21 level is arranged on described second cylinder mount plate 22, described web joint 19 one end is fixedly connected with the second hydraulic cylinder piston rod 20 by two nuts, and one end is fixedly connected with magnechuck 18 by screw.
Invention further provides a kind of cylindrical component wall thickness method for automatic measurement, mainly comprise the following steps, (A1) measured circle cylindrical part tumbles chute plate groove location by chute plate 4, second hydraulic cylinder piston rod 20 drives magnechuck 18 driven forward workpiece to move forward one stroke, tested part be placed on support bar 17 and be in position to be measured, moving after the second hydraulic cylinder piston rod 20, (A2) the first hydraulic cylinder piston rod moves, be with the slide 28 be actively tied in column 10 endoporus (because slide 28 has feather key 23 to lead, therefore can not rotate in column 10) on move to a fixed position, support bar 17 moves together with on tested part, until tested part compresses inductance displacement sensor 7 gauge head and makes it to reach certain pretension amount, make outside surface and first engaged wheel 24 of workpiece simultaneously, second engaged wheel 25 contact and compression motor installing plate guide rod 12 on spring, the friction of friction and the first engaged wheel 24 and outer surface of workpiece that permanent magnet low-speed motor 9 passes through driving wheel 15 and the first engaged wheel 24 drives tested part to rotate.(A3) rotating speed of permanent magnet low-speed motor 9 is 60r/min, ratio of gear is designed to 1: 1, a whole circle wall thickness can be measured like this within 1 second, the sample frequency of inductance displacement sensor is set as 2000Hz, there is A/D conversion circuit inside, the digital signal exported is processed by the host computer be connected with inductance displacement sensor 7, can demonstrate the maximal value of this part wall thickness, minimum value and mean value; (A4) after tested part wall thickness measuring completes, second hydraulic cylinder piston rod 20 moves forward, magnechuck 18 is energized, and moves on to sliding board-type blanking guide plate position 5,6 after holding workpiece after the second hydraulic cylinder piston rod 20, and tested part is tumbled in piece installing case by sliding board-type guide plate 5,6.
On the basis of above-mentioned cylindrical component wall thickness method for automatic measurement, present invention also offers the decision method that whether qualified a kind of part wall thickness is, mainly comprise the following steps, tested part is placed on support bar 17 by (B1); (B2) slide 28 under the effect of the first hydraulic cylinder 1 on move on to measuring position, now inside parts is supported by support bar 17.Outside due to part upwardly two engaged wheels 24,25 make motor mounting plate 13 upwards compress spring on guide rod 12, make two engaged wheels 24,25 and part outside surface produce certain contact, like this due to two engaged wheels supporting thus ensure that part beat does not occur when rotated.Meanwhile, the spring on compression displacement sensor 7 gauge head also wanted by part, and decrement can be adjusted to an appropriate amount (1mm), ensures that displacement transducer gauge head has certain pre-pressing force all the time, thus ensures the accuracy of measurement.(B3) because driving wheel 15 rotates under permanent magnet low-speed motor 9 drives, by friction force, rotating torque is delivered on the part of contact, part is rotated, the gauge head of inductance displacement sensor 7 just can record the wall thickness of tested part.The continuous coverage wall thickness of a week, the digital signal exporting wall thickness after sampling, to host computer, demonstrates wall thickness range and the mean value of this part.(B4) after standard component wall thickness range is demarcated, can judge that whether tested part is qualified, if tested part wall thickness value is within standard component wall thickness bound scope, then part is qualified, and now tested part is driven by charging and discharging mechanism and completes blanking to the first sliding board-type guide plate 5 position; Otherwise tested part is driven to the second sliding board-type guide plate 6 position blanking by charging and discharging mechanism.
A kind of cylindrical part wall thickness auto-measurement device comprise measuring mechanism and and charging and discharging mechanism; Measuring mechanism comprises the first hydraulic cylinder 1, first cylinder mount plate 2, slide 28, column 10, feather key 23, inductance displacement sensor 7, clamp of sensor 8, motor 9, transition axis 14, driving wheel 15, driving wheel compress gasket 16, driving wheel gland nut 30, motor mounting plate 13, fixed strip 11, guide rod 12, support bar 17, support slipper 27, first engaged wheel 24, second engaged wheel 25, two engaged wheel support bars 26; Described first hydraulic cylinder 1 is fixed on described slide base plate 3 lower end by described first cylinder mount plate 2; Described slide 28 coordinates with described column 10 to be installed; Described fixed strip 11 is provided with two threaded holes, is arranged on described column 10 by screw; Described fixed strip 11 is connected by guide rod 12 with described motor mounting plate 13, described guide rod 12 has spring around, meet the aeroelastic requirements of mechanism, guide rod upper end is fixed on fixed strip by nut; Described support bar 17 runs through described column 10 and described slide 28 interference fit; Described transition axis 14 runs through motor mounting plate 13, and one end is fixedly connected with described motor 9, and the other end is fixedly connected with driving wheel 15 by driving wheel gland nut 30, and described driving wheel is lined with driving wheel compress gasket 16 15 times; Described engaged wheel support bar 26 one end is fixedly mounted on described motor mounting plate 13, and the other end is equipped with engaged wheel, and described engaged wheel is fixedly connected with by holding screw with engaged wheel support bar; As described in step (A1), (A2), (A3) measuring mechanism complete the measurement of part wall thickness; Charging and discharging mechanism comprises chute plate 4 and two sliding board-type guide plate 5 and 6, second hydraulic cylinder 21, second cylinder mount plate 22, web joint 19, magnechucks 18; Described chute plate 4, first sliding board-type guide plate 5 and the second sliding board-type guide plate 6 are fixedly mounted on described slide base plate 3 by screw, second cylinder mount plate 22 is fixed on described slide base plate 3, vertical with described slide base plate 3, described second hydraulic cylinder 21 level is arranged on described second cylinder mount plate 22, described web joint 19 one end is fixedly connected with the second hydraulic cylinder piston rod 20 by two nuts, and one end is fixedly connected with magnechuck 18 by screw; During as above-mentioned steps (B4) charging and discharging mechanism blanking, can judge that whether part wall thickness is qualified according to the standardized element wall thickness bound of demarcating in advance, if tested part wall thickness value is within standard component wall thickness bound scope, then part is qualified, and now tested part is driven by charging and discharging mechanism and completes blanking to the first sliding board-type guide plate 5 position; Otherwise tested part is driven to the second sliding board-type guide plate 6 position blanking by charging and discharging mechanism.
Below by specific embodiment, the present invention is described further.
In one embodiment, as Fig. 6, a kind of cylindrical part wall thickness auto-measurement device, is made up of slide base plate 3, measuring mechanism and charging and discharging mechanism, host computer.This measuring mechanism comprises the first hydraulic cylinder 1, first cylinder mount plate 2, slide 28, column 10, feather key 23, inductance displacement sensor 7, clamp of sensor 8, motor 9, transition axis 14, driving wheel 15, driving wheel compress gasket 16, driving wheel gland nut 30, motor mounting plate 13, fixed strip 11, guide rod 12, support bar 17, support slipper 27, first engaged wheel 24, second engaged wheel 25, two engaged wheel support bars 26; Charging and discharging mechanism comprises chute plate 14, first sliding board-type guide plate 5, second sliding board-type guide plate 6, second hydraulic cylinder 21, second cylinder mount plate 22, web joint 19 and magnechuck 18.When measuring cartridge case part 29 wall thickness, first tested cartridge case part 29 tumbles chute plate groove location by described chute plate 4, second hydraulic cylinder piston rod 20 drives described magnechuck 18 driven forward workpiece to move forward one stroke, cartridge case part 29 is placed on described support bar 17 and is in position to be measured, described support bar 17 is provided with support slipper 27, and the material manufacture that described support slipper 27 selects hardness higher, object prevents cartridge case part 29 not stall dynamic wearing and tearing support slipper 27 when measuring, thus affect measuring accuracy, move after second hydraulic cylinder piston rod 20, afterwards the first hydraulic cylinder piston rod moves, be with the described slide 28 be actively tied in described column 10 endoporus (because slide 28 has feather key 23 to lead, therefore can not rotate in column 10) on move to a fixed position, make tested cartridge case part 29 compress inductance displacement sensor 7 gauge head and reach certain pretension amount, make the exterior surface of workpiece simultaneously and cross two engaged wheels 24, 25 contact and compression motor installing plate guide rod 12 on spring, the friction of friction and the first engaged wheel 24 and cartridge case part 29 outside surface that permanent magnet low-speed motor 9 passes through driving wheel 15 and the first engaged wheel 24 drives part to rotate, the rotating speed of permanent magnet low-speed motor 9 is 60r/min, ratio of gear is designed to 1: 1, a whole circle wall thickness can be measured like this within 1 second, the sample frequency of inductance displacement sensor 7 is set as 2000Hz, there is A/D conversion circuit inside, the digital signal exported is processed by the host computer be connected with sensor, can demonstrate the maximal value of this part wall thickness, minimum value and mean value, after tested cartridge case part wall thickness measuring completes, the second hydraulic cylinder piston rod 20 moves forward, and magnechuck 18 is energized, and move on to sliding board-type blanking guide plate position after the second hydraulic cylinder piston rod 20 after holding workpiece, tested part is tumbled in piece installing case by sliding board-type guide plate.
In another embodiment, a kind of cylindrical part wall thickness auto-measurement device, is made up of slide base plate 3, measuring mechanism and charging and discharging mechanism, host computer, and this device can also judge that whether qualified part wall thickness is.In like manner, first standardized element is placed on support bar 17; Slide 28 under the effect of the first hydraulic cylinder 1 on move on to measuring position; The inductance displacement sensor 7 continuous coverage wall thickness of a week, output digit signals, to host computer, demonstrates wall thickness range and the mean value of this part.After standard component wall thickness range is demarcated, can judge that whether tested part is qualified, if tested part wall thickness value is within standard component wall thickness bound scope, then part is qualified, and now tested part is driven by charging and discharging mechanism and completes blanking to the first sliding board-type guide plate 5 position; Otherwise tested part is driven to the second sliding board-type guide plate 6 position blanking by charging and discharging mechanism.
Above content to do the present invention in conjunction with concrete embodiment to describe in detail further, can not assert that specific embodiments of the invention are only limited to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, any type of simple deduction or equivalence are replaced, and all fall within protection scope of the present invention.
Claims (2)
1. a cylindrical part wall thickness auto-measurement device, is characterized by: comprise slide base plate (3), is fixed on measuring mechanism, charging and discharging mechanism on described slide base plate (3), host computer; Described measuring mechanism completes the measurement of cylindrical component wall thickness; Described charging and discharging mechanism completes the circulation feeding, discharge function to measuring mechanism; Described host computer process and display wall thickness measuring data; Described charging and discharging mechanism comprises chute plate (4) and the first sliding board-type guide plate (5), the second sliding board-type guide plate (6), the second hydraulic cylinder (21), web joint (19), magnechuck (18); Described chute plate (4) is fixedly mounted on described slide base plate (3); Described first sliding board-type guide plate (5), the second sliding board-type guide plate (6) are staggered installation of on described slide base plate (3); Described web joint (19) one end is fixedly connected with the second hydraulic cylinder piston rod (20), and the other end is fixedly connected with magnechuck (18);
Described measuring mechanism comprises support bar (17), inductance displacement sensor (7), the first hydraulic cylinder (1), slide (28), column (10), feather key (23), motor (9), transition axis (14), driving wheel (15), the first engaged wheel (24) and the second engaged wheel (25); Tested part is supported by support bar (17), and support bar (17) rotates under power drive, described inductance displacement sensor (7) the continuous coverage tested part wall thickness of a week; Described first hydraulic cylinder (1) is fixed on described slide base plate (3) lower end; Described slide (28) coordinates with described column (10) to be installed; Described slide (28) has feather key (23), described slide (28) can move up and down along feather key (23) direction; Described support bar (17) runs through described column (10) and described slide (28) interference fit; Described motor (9) is arranged on described column (10) side; Described transition axis (14) runs through motor mounting plate (13), and one end is fixedly connected with described motor (9), and the other end is fixedly connected with driving wheel (15).
2. one kind uses the measuring method of the cylindrical part wall thickness auto-measurement device described in claim 1, it is characterized by: comprise the following steps: (A1) measured circle cylindrical part tumbles chute plate groove location by chute plate (4), second hydraulic cylinder piston rod (20) drives magnechuck (18) driven forward workpiece to move forward one stroke, makes tested part be placed on support bar (17) and goes up and be in position to be measured, (A2) the first hydraulic cylinder piston rod moves, band is actively tied on the slide (28) in column (10) endoporus and moves to a fixed position, tested part compression inductance displacement sensor (7) gauge head spring also makes it to reach certain pretension amount, make exterior surface first engaged wheel (24) of workpiece simultaneously, second engaged wheel (25) contact and compression motor installing plate guide rod (12) on spring, permanent magnet low-speed motor (9) is rotated by the friction of driving wheel (15) and the first engaged wheel (24) and the first engaged wheel (24) and the friction belt of outer surface of workpiece part of starting building, (A3) rotating speed of permanent magnet low-speed motor (9) is 60r/min, ratio of gear is designed to 1: 1, a whole circle wall thickness can be measured like this within 1 second, the sample frequency of inductance displacement sensor (7) is set as 2000Hz, there is A/D conversion circuit inside, the digital signal exported is processed by the host computer be connected with sensor, can demonstrate the maximal value of this part wall thickness, minimum value and mean value, (A4) after tested part wall thickness measuring completes, magnechuck (18) energising of the second hydraulic cylinder piston rod front end, after holding workpiece, sliding board-type blanking guide plate position is moved on to after second hydraulic cylinder piston rod (20), magnechuck (18) power-off, tested part is tumbled in piece installing case by sliding board-type guide plate.
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| US4638568A (en) * | 1984-01-31 | 1987-01-27 | Taiho Kogyo Corporation, Ltd. | Method and apparatus for measuring wall thickness of a workpiece |
| CN2547427Y (en) * | 2002-06-28 | 2003-04-30 | 宝山钢铁股份有限公司 | Steel plate and band section contour profile measuring instrument |
| CN201867170U (en) * | 2010-10-26 | 2011-06-15 | 合肥华信电动科技发展有限公司 | Thickness measuring instrument |
| CN102175133A (en) * | 2011-02-25 | 2011-09-07 | 清华大学 | Global metal film thickness measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4638568A (en) * | 1984-01-31 | 1987-01-27 | Taiho Kogyo Corporation, Ltd. | Method and apparatus for measuring wall thickness of a workpiece |
| CN2547427Y (en) * | 2002-06-28 | 2003-04-30 | 宝山钢铁股份有限公司 | Steel plate and band section contour profile measuring instrument |
| CN201867170U (en) * | 2010-10-26 | 2011-06-15 | 合肥华信电动科技发展有限公司 | Thickness measuring instrument |
| CN102175133A (en) * | 2011-02-25 | 2011-09-07 | 清华大学 | Global metal film thickness measuring device |
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