CN86202502U - Simply constructed digital displaying height meter with microcomputer and magnetic grid - Google Patents
Simply constructed digital displaying height meter with microcomputer and magnetic grid Download PDFInfo
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- CN86202502U CN86202502U CN 86202502 CN86202502U CN86202502U CN 86202502 U CN86202502 U CN 86202502U CN 86202502 CN86202502 CN 86202502 CN 86202502 U CN86202502 U CN 86202502U CN 86202502 U CN86202502 U CN 86202502U
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Abstract
The utility model discloses a simple microcomputer magnetic grid digital displaying height meter which is a metering testing apparatus for metering the height, the diameter, the spacing or the gap of apart objects of machinery quantity. The utility model adopts a design matched with a microcomputer magnetic grid digital displaying system, is additionally provided with a standard gauge with known dimension, and omits a common hand wheel, and a fine adjusting and a locking mechanisms. The utility model can movably measure with a constant speed and force moment and rapidly measure by hand, and the utility model can also be used to measure the highest point or the lowest point of a curve or a circle arc and the relative size of the curve or the circle arc. The utility model can eliminate the influence of measuring force to measurement precision, and has the advantages of simple and convenient operation and high cost performance.
Description
Be used to the spacing or the gap of measuring height, thickness, diameter and being separated by object or aperture; ICL: GOIB21/16.
The technical information of reference:
1.GB（11）2055205，（43）2／1981，（72）Shigeo Miyamoto。
2.GB（11）2094980A，（43）9／1982，（72）Siegfried Gruhler。
3.GB(11) 2106251A, (43) 4/1983, (72) Hiroshi Yamashiro etc.
4.US（11）3924337，（45）12／1975，（76）James.L.Taylor。
5.US（11）4129949，（45）12／1978，（75）Robert P。
Callaghan Jr.，Westerly。
6.US（11）4187612，（45）2／1980，（73）Brown ＆ Sharpe Manufacturing Company。
7.Us（11）4238887，（45）12／1980（76）John Mclaughlin。
8.Brown ＆ Sharpe Manufacturing Company 1982
The MICRO--HITE sample
9. the TESA--MICRO Hite of Switzerland Waja company limited sample
10. Switzerland TRIMOS, Vertical automatic
Digital display height-gauge and verticality measuring instrument sample
11.Mahr Digital Height Measuring Instruments
The Digimar sample
12. Japanese SONY Digital Height Gauge H-Series
Sample (1980 11.Ax-158-a-OB)
As everyone knows, early stage height measuring device, based on physical construction, its test and measuring function is limited, generally is used for single goal, as the metering of length, thickness, width, the restriction that its measuring accuracy also is subjected to manufacturing technology.Because the widespread use of electronic technology, particularly microelectric technique and microcomputer technology, the height measurement technology mutually combines with it, has produced the multi-functional height-gauge of many a new generations.Above-mentioned Patent project of enumerating and the introduction of various countries company last word sample since 1980 have embodied the technical merit of this Developing Trend in Technology and current height-gauge.
In China's commercial production, the height measuring device majority that generally adopts still is the mechanical type height gauge of vernier reading at present, also occur some external digital display height gauges of introducing in recent years, also had a small amount of high performance height-gauge that has microcomputer digital display and printing equipment.Because the height gauge of mechanical cursor type can not adapt to the Technology Need that modern industry is produced fully; Though the digital display height gauge of Chu Xianing has easy and simple to handlely in recent years, reading is advantage intuitively, and its function is compared with multi-functional height-gauge with precision, also has big gap.And the height-gauge of the band microcomputer digital display of introducing in recent years, function is many, precision is high, mostly adopt gratings or hold grid as detecting element, but its complicated integral structure costs an arm and a leg, and to the environmental requirement height, has big difficult in China's penetration and promotion; What have is also not popular with users owing to can not directly measure the highest or minimum point of curve or circular arc, though have as above function arranged, structure is complicated more, cost also improves thereupon.
For this reason, the purpose of this utility model is to design a kind of simple type microcomputer digital display height-gauge, make it to have function similar and close precision to advanced height-gauge, can be used for again simultaneously direct, easy, measure the highest or lowest point and their relative size of curve or circular arc apace; Can be used for the motor-driven measurement of constant speed constant force square, can be used for again manually measuring fast; Can also eliminate the influence of ergometry automatically, have the more excellent ratio of performance to price measuring accuracy.
The utility model has a base, a column upright and that join together with base is arranged on base, fixing one pair of steel guide rail on column, be equipped with one and comprise two plankers of measuring headstock up and down on guide rail, measuring head is by measuring headstock and planker rigid attachment; Planker is bearing on the guide rail by 12 accurate miniature ball bearings, and form accurate rolling with guide rail and cooperate, at the two ends up and down of guide rail a rolling guide wheel is arranged respectively, the two ends up and down that have a steel band to walk around lower tumbler and planker connect, form the ring seal kinematic train, on steel band and the opposite side of the rolling guide wheel of planker correspondence a counterweight block is housed, with the balance planker and the weight of heavy of on planker, installing; In following rolling guide wheel supporting base one side a garden shape ferrite is housed, keeps certain air gap and corresponding with it concentric but the out-of-alignment permanent magnet is formed magnetic driver by one and ferrite.Permanent magnet has the waver control servomotor input voltage of setting in advance by a little servo motor driven; Perhaps regulate continuously and the input voltage of selected servo motor, make the motor-driven measuring speed of measuring instrument reach required speed and keep constant with a potentiometer; Regulate the size of gaps between back stationary permanent magnet and the ferrite, reach the constant force square transmission that needs, planker is then by driven by servomotor, do up or down motor-driven measurement campaign by magnetic driver, scroll-up/down guide wheel, Steel Belt Transmission along guide rail, and keep the ergometry substantially constant of measuring head constant; Measure motion also can hand simultaneously measure headstock with the rapid movement convergence workpiece that surmounts above-mentioned motor-driven constant speed constant force square or directly contact workpiece, carry out the quick manual measurement; Measuring the plane that also will be aided with workpiece movement or whole measuring instrument sometimes of moving moves, therefore three gasbag-type cushion blocks on the base support plane of measuring instrument, have been gluedd joint with four 0.35 millimeter big or small throttle orifices, introduce pressurized air with flexible rubber hose from the outside, control through an air switch, between above-mentioned three cushion blocks and support platform, form stable mattress, make the plane of measuring instrument move brisk and steady.
The utility model has adopted the supporting design that mutually combines of above-mentioned physical construction and microcomputer magnetic grid digital system, also promptly on the basis of above-mentioned physical construction, adopted the basis displacement signal vehicle of magnetic grid as measuring instrument, adopted the displacement signal detection head of magnetic head as this measuring instrument, magnetic grid and the magnetic head activity composition one that matches is with data processing and the numeric display unit of microcomputer magnetic grid digital table as this measuring instrument.
Magnetic head of this instrument and general dynamic magnetic head are different, it is a kind of static head of magnetic flux response type, promptly when magnetic head is in static non-displacement signal, it has the unconverted modulation wave signal output of constant amplitude, and in case with magnetic grid generation relative displacement, an amplitude and displacement signal are promptly arranged to the output of the modulation wave signal of change, magnetic head is directly or by adjusting the cushion block composition one that relies on planker that guide rail drop-center one side is fixedly connected and the magnetic grid activity matches; Adjust cushion block and on planker, install in advance,, make magnetic head reach technical requirement thereon easy for installationly through measuring and adjusting.
With the magnetic head magnetic grid of forming one that cooperatively interacts be the wire rod or the band of the magnetic metal of any surface finish, or have the wire rod or a band of magnetic metal coating, above-mentioned wire rod or band are strained and fixed on laser record magnetic machine, according to the electromagnetic conversion principle, the process photoelectric control is recorded on above-mentioned wire rod or band and has been carved by the equally distributed benchmark magnetic signal of certain pitch of waves, it and magnetic head interaction energy produce magnetoelectric effect, the constant amplitude modulation wave signal of the original output of static head is changed, thereby the displacement of relative motion between magnetic grid and the magnetic head is converted into the simulation electric weight of respective change, by the cable output of magnetic head afterbody, accept by the microcomputer digital display meter, handle and demonstration; Above-mentioned line style magnetic grid or banding pattern magnetic grid directly are strained and fixed at the two ends up and down of guide rail drop-center, and its length is slightly larger than the measurement range of instrument; Also can there be two adjustment cushion blocks to install in advance at two ends up and down at the guide rail drop-center respectively, and, above-mentioned magnetic grid be installed to satisfy technical requirement on its cushion block by to adjusting the adjustment of cushion block.
According to the design feature of magnetic grid, form one by difform magnetic head match corresponding with it, match with the line style magnetic grid and form the magnetic head of one, a bright and clean mesopore is arranged, its intermediate pore size and the activity of the line style magnetic grid suit that matches is formed one; Match with the banding pattern magnetic grid and to form the magnetic head of one, a bright and clean plane is arranged, therefore be called the plane magnetic head, one is formed with banding pattern magnetic grid maintenance plane contact in this plane;
Adopted above-mentioned physical construction with the mutually combine measuring instrument of supporting design of microcomputer magnetic grid digital system, be furnished with the standard gauge of a known dimensions, this gauge is as must fittings and the complete measuring instrument of the common composition of above-mentioned member.Selected measuring head is installed and fixed in measuring headstock, this standard gauge is carried out analogue measurement one time, because selected ergometry is that substantially constant is constant, so measuring error that ergometry causes, be that error between measurement result and the standard gauge known dimensions also is constant substantially, this error makes it can eliminate the influence of ergometry to measuring accuracy automatically in repeatedly quick measurement the afterwards through after the MICROCOMPUTER PROCESSING of measuring instrument, and the main precision index of this measuring instrument is as follows:
Measuring accuracy: 10 μ m/1000mm
Digital display resolution: 1 μ m
Duplicate measurements precision :≤3 μ m
The main design parameters of this measuring instrument is as follows:
The constant scope of motor-driven measuring speed: 3～25mm/ is selected between second.
Manually quick scope :≤12 meters/minute
The constant scope of ergometry: 2～3N
Air inlet pressure: 1～1.5 * 10
5Pa
Measure stroke range: 0～≤ 1500 millimeter
This measuring instrument is in measurement range during greater than 1000 millimeters, to manually fast the scope of application can extend to≤60 meters/minute, this moment, its main precision index was as follows:
Measuring accuracy: 10 μ m/1000mm
Digital display resolution: 5 μ m
Duplicate measurements precision :≤3 μ m
The constant scope of motor-driven measuring speed: 3～25mm/ second
The constant scope of ergometry: 2～3N
Air inlet pressure: 1～1.5 * 10
5Pa
Above-mentioned utility model is to have compared on external all kinds of model machine and the prior art basis in analysis, the simple type microcomputer digital display height-gauge of design in conjunction with current China commercial production is actual, its effect is to compare with the present multifunctional microcomputer digital display height-gauge that can see, under prerequisite with identity function and close measuring accuracy, this measuring instrument has the following advantages: 1. simple in structure, operate fast and convenient, be mainly reflected on the one-piece construction of planker, except indispensable measurement headstock, detection head, play outside the steel band of connection and driving torque effect, have only 12 rolling bearings and the supporting base thereof that accurately cooperate with guide rail, thereby omitted common and complex handwheel gear train, ergometry and displacement micro-adjusting mechanism and locking mechanism; In the prior art, the product that has is the highest or minimum point value etc. for energy measurement, except the microcomputer digital readout system, also set up accurate secohmmeter, both improved cost, increased the adjustment link when manipulating again, and the utility model both can be used for the motor-driven measurement of constant speed constant force square owing to simplified the structure operation also easy, can be used for again manually measuring fast, increased the peak of direct measurement curve or circular arc or the function of lowest point and the relative size between them; The utility model has been fully to use the constant factor of ergometry substantially constant, brought into play the function speciality of microcomputer, utilized the standard gauge of a known dimensions, realized of the influence of automatic elimination ergometry to measuring accuracy, make its cost only be 1/3～1/5 of import model machine, reduced cost significantly, made it to have the more excellent ratio of performance to price.
2。This measuring instrument is owing to adopted the aforementioned mechanical arrangement supporting design that combines with microcomputer magnetic grid digital system, because the magnetic grid as the basis displacement signal vehicle in the system has identical or close temperature linear expansion coefficient with most tested metal works, and owing to magnetic head and magnetic grid as described above suit cooperate or keep plane contact to form one, therefore their susceptibility to vibration effect on all directions is not really remarkable, therefore, this measuring instrument requires lower to environmental baselines such as temperature, vibrations, be suitable for the use of production scene.
3。The grating that is adopted in employed magnetic grid and the prior art in this measuring instrument or hold grid and compare, aspect duplication process, duplicate the length aspect, the convenience aspect of Installation and Debugging all has tangible easy advantage, and obvious superior part is also being arranged aspect its physical dimension miniaturization.
4。The gasbag-type cushion block that is adopted with 0.35 millimeter aperture, guaranteeing to have under the same effect prerequisite, the simple processing capacity of technology is few, and the cushion block that is adopted in the existing technology is a fairly large number of hole throttle type cushion block below 0.1 millimeter, difficulty in process, processing capacity are also big.
In sum, compare with the height-gauge of identity function and close precision at manufacturing, use, cost aspects, this simple type microcomputer magnetic grid digital height-gauge is more suitable for applying in the present commercial production of China, also will have significant technical economic benefit after going into operation.
Aforesaid simple type microcomputer magnetic grid digital height-gauge, its external form and structure as depicted in figs. 1 and 2, Fig. 1 is a side view, Fig. 2 is a front elevation; The one-piece construction of its planker is shown in Fig. 1,2,3,4; The magnetic driver structure as shown in Figure 5; Fig. 6 is the strong embodiment who arranges of the utility model computer operation face function, and Fig. 7,8 is for having the gasbag-type cushion block of four 0.35 millimeter throttle orifices, and its Fig. 8 is the backplan of Fig. 7.The standard gauge that Fig. 9 joins for instrument, the local diagrammatic sketch that Figure 10 installs for magnetic grid, the said structure division is as follows:
Each component Name shown in Fig. 1 and 2: 1. base.2. column.3. descend the rolling guide wheel.4. the magnetic grid coupling block that is strained and fixed.5. magnetic grid.6. steel belt.7. measurement headstock, the 7a measuring head.8. guide rail.9. magnetic head output cable.10. planker.11. magnetic head.12. counterbalance weight.13. last rolling guide wheel.14. digital display screen.15. microcomputer.16. air switch.17. servo motor.18. gasbag-type cushion block.19. the waver or the potentiometer of the control of servomotor input voltage.20. computer operation face.
Fig. 3 is the H-H section among Fig. 2, expressed the one-piece construction of planker with Fig. 1, Fig. 2, Fig. 4, and manifested the connection situation of magnetic head and planker, and the accurate miniature ball bearing supporting base of Figure 10 a for being fixedly connected with planker, 10b is the accurate miniature ball bearing that accurately cooperates with guide rail; 11a is an adjustment cushion block, and magnetic head 11 is installed on the adjustment cushion block, through to adjusting the measurement and the adjustment of cushion block, magnetic head is installed satisfied technical requirement.Fig. 4 is the situation that magnetic head is directly installed on planker, and 3 among Fig. 5 is following rolling guide wheel, and 3b is the supporting base of rolling guide wheel, and 3a is a ferrite.17a for the coaxial installation of servo motor and with the concentric relative permanent magnet that maintains gap delta of ferrite.
Keypad function among Fig. 6 is as follows:
0～9 each key is a numerical key; R-zero setting key; The M-storage key; Can deposit the displayed value in measuring in microcomputer RAM storer.C-clear key, P-preset key, can after analogue measurement, preset the measuring error that the diameter value of measuring head and ergometry cause and deposit microcomputer in, so that eliminate measuring error, F-function initiating key that ergometry causes automatically, when whenever changing a kind of measurement function all earlier by this key, + and-/+key one is respectively addition and division key, all gaging hole apart from the time usefulness, in addition, can also realize other measurement function by the various combination of each key.Among Fig. 7 and Fig. 8 18 is the gasbag-type cushion block, 18a is and cushion press-fitting all-in-one-piece distributing ring, 18b is 0.35 millimeter a throttle orifice, have 4,18c is an air bag, pressurized air enters distributing ring after being controlled by air switch, enters air bag through throttling pore, and forms stable mattress between the support platform of measuring instrument.
Known dimensions A that Fig. 9 must join by the utility model and the standard gauge of B, this gauge and other members be common forms complete measuring instrument, and 7a is selected measuring head and carries out the analogue measurement synoptic diagram among the figure.
Among the partial view that Figure 10 installs for Fig. 1 magnetic grid, Fig. 1, magnetic grid is strained and fixed link block 4 directly at the two ends up and down of guide rail drop-center fixed connection, and the 4a among Figure 10 is for adjusting cushion block, the magnetic grid link block 4 that is strained and fixed is installed on 4a, by adjustment, magnetic grid is installed to satisfy technical requirement thereon to 4a.
The utility model has passed through advanced development, and employed its external form of microcomputer magnetic grid digital table as shown in Figure 1 and Figure 2; Magnetic grid in the utility model be the wire rod of 2 millimeters of φ of cupric, Rhometal or iron content, chromium, cobalt-base alloy 2.4 millimeters of φ wire rod or be the band that tape base has been electroplated nickel, cobalt, phosphor alloy coating with the phosphor bronze, the thickness of band is 0.20 millimeter, width is 18 millimeters, above-mentioned wire rod or band have adopted aforesaid record magnetism method and equipment to record magnetic, and the pitch of waves of its benchmark magnetic signal is λ=0.2 millimeter; Its steel belt is that the trade mark is the alloyed steel strip of ICr18Ni9Ti, and sectional dimension is wide 33 millimeters, thick 0.10 millimeter, and adopted following design parameter:
The constant scope of motor-driven measuring speed: 3～5mm/ second, 15～25mm/ second two
Shelves.
Manually quick scope :≤12 meters/minute
Ergometry :～3N
Admission pressure: 1～1.5 * 10
5Pa
Measure stroke range: 0～1000 millimeter
According to above-mentioned parameter, selected the small-sized servomotor of SDO9 for use, adopting the air gap delta size setting range between waver selection and control input voltage, permanent magnet and the ferrite is 0.10～0.30 millimeter.The embodiment that the utility model computer operation face function key is arranged as shown in Figure 6, the measuring instrument of the foregoing description, the measuring accuracy that actual measurement reaches is as follows:
Measurement range: 0～1000mm
Measuring accuracy:＜10 μ m/1000mm
Digital display resolution: 1 μ m
Repeatable accuracy≤2 μ m
For manual fast scope be≤60 meters/minute measuring instrument, and among the embodiment of the present utility model, its magnetic grid record magnetic wave is apart from λ=1mm, digital display meter resolution: 5 μ m, and all the other structural parameters are all same as the previously described embodiments, and it is also identical to survey the measuring accuracy that reaches.
Claims (11)
1, simple type microcomputer magnetic grid digital height-gauge, the steel guide rail that a base and column is arranged and install thereon is equipped with a planker that comprises measuring head on guide rail, and measuring head is by measuring headstock and planker rigid attachment; Have a steel band to walk around to be positioned at guide rail up and down the rolling guide wheel at two ends connects with the two ends of planker, formation ring seal kinematic train, the opposite side with the rolling guide wheel of planker correspondence on steel band is equipped with a counterweight block; Planker is driven by a magnetic driver and servo motor constant speed constant force square by steel band and scroll-up/down guide wheel; Between the base of measuring instrument and the support platform through the control of an air switch, introduce pressurized air and form air cushion by the outside, this measuring instrument is characterised in that and has adopted the supporting design that mutually combines of above-mentioned physical construction and microcomputer magnetic grid digital system, promptly with the basis displacement signal vehicle of magnetic grid as measuring instrument, with the displacement signal detection head of magnetic head as this measuring instrument, magnetic head and the magnetic grid composition one that cooperatively interacts is with data processing and the numeric display unit of microcomputer magnetic grid digital table as this measuring instrument; And the standard gauge conduct of being furnished with a known dimensions must fittings and the complete measuring instrument of the common composition of above-mentioned member.
2, adopted above-mentioned physical construction to combine supporting design with microcomputer magnetic grid digital system, and is furnished with the measuring instrument of a known dimensions standard gauge, can be used for the metering height, thickness, the inside and outside circle diameter, verticality, the depth of parallelism, right alignment, the spacing of the tapering and the object of being separated by or gap, its purposes that is characterised in that of the present utility model can also be directly, measure the highest or lowest point and the relative size between them of curve or circular arc easily, can be used for the motor-driven measurement of constant speed constant force square, can be used for quick manual again and measure, can also by joining standard gauge and microcomputer be used for eliminating ergometry measuring accuracy influenced.
3, by claim 1 described measuring instrument, it is characterized in that the magnetic head as the displacement signal detection head is the static head of magnetic flux response type.
4, by claim 1 described measuring instrument, it is characterized in that directly or by adjusting cushion block on planker, relying on guide rail drop-center one side and being fixedly connected as the magnetic head of displacement signal detection head, and and the magnetic grid activity composition one that matches.
5, by claim 1 described measuring instrument, it is characterized in that with the match magnetic grid of forming one of magnetic head be elongated magnetic metal wire rod of any surface finish or wire rod with magnetic metal coating.
6, by claim 1,3,4 described measuring instruments, it is characterized in that magnetic head has a bright and clean mesopore, the diameter in its hole and claim 5 described magnetic grid activities match and suit is formed one.
7, by claim 1 described measuring instrument, it is characterized in that with the magnetic head magnetic grid of forming one that matches be the magnetic metal band of an any surface finish or band with magnetic metal coating.
8, by claim 1,3,4 described measuring instruments, it is characterized in that magnetic head has a bright and clean plane, this plane and claim 7 described banding pattern magnetic grids keep plane contact and form one.
9, by claim 1,5,7 described measuring instruments, it is characterized in that directly being strained and fixed at the two ends up and down of guide rail drop-center, or on prior mounted adjustment cushion block, install with the magnetic head magnetic grid of forming one that matches, its length is slightly larger than the measurement range of instrument.
10, press the measuring instrument of claim 1 and 2, the one-piece construction that it is characterized in that planker has two measurement headstocks up and down, a side fixed connection that relies on the guide rail drop-center one as right 3,6 or 8 described magnetic heads, planker links to each other with steel band at two ends up and down, and planker forms accurate rolling by 12 accurate miniature ball bearings and guide rail and cooperates.
11,, it is characterized in that having gluedd joint three gasbag-type cushion blocks that have four 0.35 millimeter throttle orifices on the baseplane of base by claim 1 and 2 measuring instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86202502 CN86202502U (en) | 1986-04-18 | 1986-04-18 | Simply constructed digital displaying height meter with microcomputer and magnetic grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86202502 CN86202502U (en) | 1986-04-18 | 1986-04-18 | Simply constructed digital displaying height meter with microcomputer and magnetic grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86202502U true CN86202502U (en) | 1987-07-08 |
Family
ID=4806019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86202502 Withdrawn CN86202502U (en) | 1986-04-18 | 1986-04-18 | Simply constructed digital displaying height meter with microcomputer and magnetic grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86202502U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082855A1 (en) * | 2007-12-26 | 2009-07-09 | Hanchang Huang | A measuring device with a worktable having an air bearing glass. |
| CN102650569A (en) * | 2011-02-24 | 2012-08-29 | 中国航空工业集团公司西安飞机设计研究所 | Transmission efficiency measuring device and method for airplane high-lift actuating system |
| CN103536189A (en) * | 2013-10-24 | 2014-01-29 | 苏州图卡节能科技有限公司 | Energy-saving type heating container and manufacturing method thereof |
| CN105403142A (en) * | 2015-11-25 | 2016-03-16 | 华中科技大学 | Magnetic-railing-ruler-based portable flatness measurement instrument |
| CN109141312A (en) * | 2018-11-13 | 2019-01-04 | 桂林量具刃具有限责任公司 | A kind of digit display dial gauge rolling guiding with moving grid |
-
1986
- 1986-04-18 CN CN 86202502 patent/CN86202502U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082855A1 (en) * | 2007-12-26 | 2009-07-09 | Hanchang Huang | A measuring device with a worktable having an air bearing glass. |
| CN102650569A (en) * | 2011-02-24 | 2012-08-29 | 中国航空工业集团公司西安飞机设计研究所 | Transmission efficiency measuring device and method for airplane high-lift actuating system |
| CN103536189A (en) * | 2013-10-24 | 2014-01-29 | 苏州图卡节能科技有限公司 | Energy-saving type heating container and manufacturing method thereof |
| CN105403142A (en) * | 2015-11-25 | 2016-03-16 | 华中科技大学 | Magnetic-railing-ruler-based portable flatness measurement instrument |
| CN109141312A (en) * | 2018-11-13 | 2019-01-04 | 桂林量具刃具有限责任公司 | A kind of digit display dial gauge rolling guiding with moving grid |
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| CF01 | Termination of patent right due to non-payment of annual fee |