CN202694193U - High-precision one-dimensional automatic calibration device - Google Patents
High-precision one-dimensional automatic calibration device Download PDFInfo
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- CN202694193U CN202694193U CN 201220286348 CN201220286348U CN202694193U CN 202694193 U CN202694193 U CN 202694193U CN 201220286348 CN201220286348 CN 201220286348 CN 201220286348 U CN201220286348 U CN 201220286348U CN 202694193 U CN202694193 U CN 202694193U
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Abstract
The utility model relates to a device which is applied to automatic positioning and detecting of straight line microspur change, in particular to a high-precision one-dimensional automatic calibration device. The high-precision one-dimensional automatic calibration device comprises a mechanical motion mechanism, an electrical equipment box, a stepping motor, a driver, a controller, a control panel and a switching power supply. The mechanical motion mechanism is placed at the left side of the whole device, wherein a linear guide rail comprises two guide rails and four sliding blocks, and four travel switches are installed at a guide rail travel terminal. Two ends of a guide screw of a ball screw are limited on a base plate through a fixed bearing seat. A working platform is supported through the sliding blocks and slides on the linear guide rail. Six rubber blanket blocks are cushioned below the base plate. The electrical equipment box is arranged at the right side of the base plate, and the stepping motor, the driver, the controller and the switching power supply are installed inside the electrical equipment box. An output shaft of the stepping motor is connected with the input end of the guide screw through a shaft coupling device. The switching power supply is connected with the driver. Accurate positioning and speed regulation on the one-dimensional direction can be achieved by means of the high-precision one-dimensional automatic calibration device, and the accuracy can reach 0.01 millimeter.
Description
Technical field
The utility model relates to the device that is applied to automatic location and the variation of detection of straight lines microspur, specifically discloses a kind of High Precision One Dimensional automatic calibration device.
Background technology
In scientific measurement, demarcation is an important step that can not be ignored, and is used for finishing obtaining, change and processing of information.Be accompanied by the development of automatic technology, calibration technique has become indispensable ingredient in the automated system with device, only have accurately in time parameters with measurand to detect and convert to be easy to the signal that transmits and process, whole system could normally be worked.Present automatic calibration device precision is difficult to reach requirement, in order to improve precision, adopts servomotor or linear electric motors as control object and power source more, and adopts grating displacement sensor or photoelectric encoder feedback, forms closed-loop control system.Closed-loop control can feed back to controller with physical location, thereby carries out position compensation.But the cost of closed-loop control system is very high, and easily causes lasting mechanical oscillation, control complexity and Maintenance Difficulty.Therefore, the resolution, precision, stability and the reliability that how to improve automatic calibration system are the subject matter that automation development faces.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, discloses a kind of High Precision One Dimensional automatic calibration device, can realize accurately location and speed governing.
The utility model is achieved through the following technical solutions: this utility model device comprises mechanical motion mechanism, electric appliance box, stepper motor, driver, controller, control panel and Switching Power Supply.Described mechanical motion mechanism is positioned at the left side of whole device, mainly comprises worktable, line slideway, ball-screw, travel switch, shaft coupling, supporting seat, rubber cushion blocks, level meter and base plate.Described line slideway is comprised of two guide rails and four slide blocks, and guide rail is bolted on base plate, and the guide rail stroke terminal is equipped with 4 travel switches.Described ball-screw is comprised of leading screw, nut and ball, and nut and worktable are bolted, and the leading screw two ends of ball-screw are limited on the base plate by the fixed mounting base that is made of fixed supporting seat and support type supporting seat.Described worktable carries and slides on the line slideway by four slide blocks, and each slide block and worktable adopt bolt to fix.Be lined with six rubber cushion blocks below the described base plate, evenly distribute, base plate adds level meter and carries out leveling.Described electric appliance box is placed in the right side of base plate, and electric appliance box inside is equipped with stepper motor, driver, controller and Switching Power Supply, and they all are fixed on the base plate.The output shaft of described stepper motor is connected with the leading screw input end by shaft coupling.Described controller is comprised of single-chip microcomputer and peripheral components, and described single-chip microcomputer is AT89S52, and described peripheral components comprises storer 24C08 and input and shows that they are connected with single chip computer AT 89S52 respectively with chip 8279.Described driver is connected with stepper motor with single-chip microcomputer respectively.It is positive that described control panel is installed on described electric appliance box, and control panel mainly comprises keyboard load module and LED charactron display module, and they are connected with single chip computer AT 89S52 by chip 8279 respectively.Described Switching Power Supply is connected with driver.
Accurate location and speed governing that the realization of the utility model matching requirements makes progress at one-dimensional square, the precision size can reach 0.01mm, and the major advantage that compared with prior art has is embodied in:
1. cost is low;
2. good rigidly;
3. precision is high, and the linear positions can reach 0.01mm;
4. compact conformation, volume are little, lightweight;
5. design and installation is easy, controls convenient and simple;
6. durability is good;
7. reliability is high;
8. practicality is high, can be widely used as surveying instrument, detecting instrument, laser bonding, cut, miniature numerical control lathe etc.
Description of drawings
Fig. 1 is the stereographic map of the utility model apparatus structure signal.
Fig. 2 is the vertical view of the utility model apparatus structure signal.
Fig. 3 is the utility model collectivity Scheme Design block diagram.
Fig. 4 is single chip computer AT 89S52 minimum system figure in the controller circuitry.
Fig. 5 is the storer 24C08 external interface figure that expands in the controller circuitry.
Fig. 6 is the input of expanding in the controller circuitry and the chip 8279 external interface figure that show usefulness.
Fig. 7 is the driver TB6560 external interface figure of stepper motor.
Fig. 8 is the electric appliance box control panel schematic diagram of the utility model device.
Description of symbols: electric appliance box 1, base plate 2, rubber cushion blocks 3, worktable 5, guide rail 6, slide block 7, ball-screw 8, shaft coupling 10, fixed mounting base 11, travel switch 13, stepper motor 14, driver 15, controller 16, Switching Power Supply 17, numeric keypad 18, LED charactron 19, function keyboard 20, total power switch 21, relay indicating light 22.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 3, collectivity Scheme Design of the present utility model: this device is comprised of mechanism system and electric control system.Mechanism system mainly is comprised of ball-screw and line slideway.Electric control system mainly is comprised of stepper motor, driver and controller (single-chip microcomputer and peripheral components thereof).The Switching Power Supply power supply, Single-chip Controlling, stepper motor drives, ball-screw-transmission, line slideway carrying.
Principle of work: PC downloads to single-chip microcomputer with the control program that writes by USP ISP downloader.Single-chip microcomputer transmitted signal CLK, direction signal CW and enable signal EN be to driver (such as Fig. 4, shown in Figure 7), be respectively applied to the control step motor speed, turn to and off line.Signal is converted to the needed heavy current signal of stepper motor through after pulse distribution, segmentation and the power amplification of internal drive, and drives the stepper motor running.Rotatablely moving of stepper motor is delivered on the ball-screw by shaft coupling, and ball-screw will rotatablely move again and be converted to rectilinear motion, and worktable is slided along line slideway.The two ends of line slideway have travel switch to be used for realizing the back and forth movement of worktable.Base plate has level meter and rubber cushion blocks, is used for the flatness of check line slideway and horizontal level and the upright position that linearity, system install.SCM peripheral has been expanded input and has been reached 8279 chips, the input of 8279 chip controls keyboards and the demonstration of charactron of using when showing.Easily cause loss of data when considering unexpected power down, SCM peripheral has also been expanded storer 24C08 and has been used for preserving the present position coordinate, at any time position coordinates is backuped among the outside charged EEPROM, like this after power down or the shutdown, the current position coordinates of system can keep, and automatically reads in when starting shooting next time.
The realization of location: the position control of stepper motor is to be determined by the sum of command pulse.The position control of this device needs two parameters: absolute location coordinates value and incremental counter coordinate figure.The former is converted to distance by convert formula with the pulse sum again by the pulse number in the cumulative movement process, and being operated in the display routine of conversion finished.This value requires to have bound, and bound is relevant with range.If reaching bound is accumulating operation before, then reach bound and transfer the computing of successively decreasing to afterwards, vice versa, and the conversion of computing is by implement of interruption function, and the condition of down trigger is that travel switch is run into by topworks.After pressing stop key, stepper motor stops.The latter again will be apart from being converted to the pulse sum by convert formula by the numeric keypad input, and being operated in the keyboard program of conversion finished.Stepper motor whenever makes a move, and the pulse sum subtracts 1, if there is not step-out to exist, when worktable reached the target location, the pulse sum just in time reduced to 0, and stepper motor stops.
The realization of rotating: single-chip microcomputer detects the signal (such as Fig. 4, shown in Figure 7) of P1.1 mouth during starting, low level forward, high level counter-rotating.After worktable strikes travel switch, the stepper motor commutation, thus realize automatically coming and going.When the stepper motor forward, stepper motor whenever makes a move, and the pulse sum adds 1; When stepper motor reversed, stepper motor whenever made a move, and the pulse sum subtracts 1.
The realization of speed governing: known, the speed of stepper motor is directly proportional with pulsed frequency, can interrupt the gating pulse frequency by time-delay or timer.The method that the utility model device adopts timer to interrupt, namely utilize the timing signal of the timing function generation any period of timer, interrupt for 2 times producing 1 recurrent pulse, thereby can control easily the cycle (such as Fig. 4, shown in Figure 7) of P1.0 output pulse signal CLK.In order to produce the step-by-step impulse that needs, calculate regularly constant according to the machine cycle of given pulsed frequency and single-chip microcomputer, this timing constant has determined timing.When timing to and interrupt when timer being produced overflow changes the operation of P1.0 level state at interruption subroutine, so just can obtain the pulse of a given frequency.Change regularly constant, just can change pulsed frequency, thus the control of realization speed.Therefore, be exactly in fact the timing constant size that constantly changes timer with the control of timer implement of interruption function speed.Adopt discrete method to the rate curve discretize.At first divide speed class at the zero rotating speed of stepper motor between the maximum (top) speed, timing constant sequence corresponding to the rotating speed sequence of the gained that then will disperse made form, is stored among the interior ROM of sheet.Adopt look-up table, during acceleration, forward is tabled look-up, and regularly constant increases; During deceleration, reverse tabling look-up, regularly constant reduces.
As shown in Figure 1 and Figure 2, this utility model device comprises mechanical motion mechanism, electric appliance box 1, stepper motor 14, driver 15, controller 16, control panel and Switching Power Supply 17,
Wherein, mechanical motion mechanism is positioned at the left side of whole device, mainly comprises worktable, line slideway, ball-screw 8, travel switch 13 and base plate 2 etc.Described line slideway is comprised of two guide rails 6 and four slide blocks 7, and guide rail is bolted on base plate, and the guide rail stroke terminal is equipped with 4 travel switches.Described ball-screw is comprised of leading screw, nut and ball, and nut and worktable are bolted, and the leading screw two ends of ball-screw are limited on the base plate by the fixed mounting base 11 that is made of fixed supporting seat and support type supporting seat.Described worktable carries and slides on the line slideway by four slide blocks 7, and each slide block and worktable adopt bolt to fix.Be lined with six rubber cushion blocks 3 below the described base plate, evenly distribute, for guaranteeing the level of base plate, base plate adds the level meter (not shown) and carries out leveling.
Wherein, electric appliance box 1 is placed in the right side of base plate, and electric appliance box inside is equipped with stepper motor 14, driver 15, controller 16 and Switching Power Supply 17, and they all are fixed on the base plate 2.
Wherein, the output shaft of stepper motor 14 is connected with leading screw 8 input ends by shaft coupling 10.
Wherein, controller 16 is comprised of single-chip microcomputer and peripheral components, and described single-chip microcomputer is AT89S52, and described peripheral components comprises storer 24C08 and input and shows that they are connected with single chip computer AT 89S52 respectively with chip 8279.
Wherein, drive model is TB6560, and it is connected with stepper motor with single-chip microcomputer respectively.
Wherein, it is positive that control panel is installed on described electric appliance box, and control panel mainly comprises keyboard load module and LED charactron display module, and they are connected with single chip computer AT 89S52 by chip 8279 respectively.
Wherein, Switching Power Supply 17 is connected with driver 15.
Such as Fig. 4-shown in Figure 7, introduce in detail respectively single-chip microcomputer and peripheral components interface schema thereof:
Fig. 4 is the minimum system figure of single-chip microcomputer, and this single-chip microcomputer model is AT89S52.
As shown in Figure 5, storer 24C08 external interface figure: A0, A1, A2 pin are used for address of devices to be selected, owing to only having expanded a slice 24C08, so three whole ground connection of pin, the address is exactly 000X.The WP pin is used for write-protect, and low level can read and write data, and high level can only be read and can not write.SDA and SCL pin are respectively data line and clock line, meet P1.3 and the P1.4 of single-chip microcomputer, are used for communication.
As shown in Figure 6,8279 chip exterior interface schemas of single-chip microcomputer extension: 8279 chips link to each other with the P0 mouth of single-chip microcomputer by D0 ~ D7, realize order or data transmission between the single-chip microcomputer and 8279.The ALE of single-chip microcomputer both can be used as the latch signal of least-significant byte address, and simultaneously again 1/6 of exportable single-chip microcomputer oscillation frequency fosc pulse, this pulse can be used as 8279 external pulse clock signal input CLK.RD, WR reception is the read-write control signal from single-chip microcomputer.CS meets the P2.7 of single-chip microcomputer, and low level is strobed.IRQ links to each other with the INTO of single-chip microcomputer by phase inverter, in order to interrupt to the single-chip microcomputer application.RESET links to each other with the reset circuit of single-chip microcomputer.The coded signal of SL0 ~ SL3 selects signal by the code translator carry-out bit, and the coded signal of OUTA0 ~ OUTA3 and OUTB0 ~ OUTB3 selects signal by the code translator deferent segment, but the output current of these two signals is too little, needs to add driver and comes the driving LED charactron to show.SL0 ~ SL3 coded signal is got 5 lines keyboard is scanned after decoding, and is connected to the line of keyboard, and return signal returns the alignment that 8279, RL0 ~ RL2 is connected to keyboard by RL0 ~ RL2.Function key of every line separate connection of RL3 ~ RL7, totally five function keys.
As shown in Figure 7, stepper motor driver TB6560 external interface figure: single-chip microcomputer P1 mouth is as the signal input of driver.P1.0 is the pulse signal input port, and motor rotation when pulse signal is arranged enters half stream mode that sets automatically during pulse-free signal, locking resistance.P1.1 is the direction signal input port, low level forward, high level counter-rotating.P1.2 is the enable signal input port, and low level is duty, and high level is off-line state.Driver TB6560 is totally six input ends, is convenient to be connected into the input form of common anode or common cathode; Totally 6 delivery outlets connect respectively motor, VDD-to-VSS.Because stepper motor can not directly be received on industrial frequency AC or the direct supply and works, thus Switching Power Supply will to receive on the driver VCC pin be the stepper motor power supply.
As shown in Figure 8, described control panel mainly is comprised of keyboard load module and LED charactron display module.Wherein, the keyboard load module is divided into function keyboard 20 and 3*5 numeric keypad 18, and LED charactron display module is comprised of 2*6 position LED charactron.
Totally five of function keyboards 20 are respectively forward, counter-rotating, acceleration, slow down and stop.
19 minutes two row of LED charactron.The first row shows the absolute location coordinates value, from left to right respectively by a bit sign position (p-forward; B-counter-rotating), three integer-bit and two-decimal position form, namely bearing accuracy reaches 0.01.The second row displaying contents is relevant with control mode.When adopting function keyboard control, the display speed grade is shaped with the pass with acceleration and deceleration; When adopting numeric keypad control, first shows rotation direction, and rear five demonstrations can be accurate to 0.01, this row automatic clear after "enter" key" unclamps equally by the incremental counter coordinate figure of numerical key input.
In addition, also have total power switch 21 and relay indicating light 22 on the control panel.
Accurate location and speed governing that the realization of the utility model matching requirements makes progress at one-dimensional square, the precision size can reach 0.01mm.
Automatically controlled aspect, the open-loop control system that system adopts stepper motor, driver and single-chip microcomputer to form, Single-chip Controlling, stepper motor drives.Stepper motor is a kind of driving control element that digital signal is converted to corresponding angular displacement or straight-line displacement, and it does not need to carry out the D/A conversion, just can directly receive the digital controlled signal that controller sends; Do not need grating displacement sensor or photoelectric encoder feedback, just can carry out speed control and positioning control.Have in addition accurate stepping, fast start-stop, control is simple and without advantages such as cumulative errorss.Therefore, not only satisfy high-precision requirement, and control is simple, cost is low.
Mechanical aspects, the motion that adopts ball-screw and line slideway to form, ball-screw-transmission, line slideway carrying.Ball-screw is that the gyration with stepper motor is converted into straight-line mechanical transmission component, have advantages of that transmission efficiency is high, motion steadily, precision is high, durability is high, synchronism is good, reliability is high, good rigidly.Line slideway is for supporting and the guided-moving parts, making it do the rolling guide element of linear reciprocating motion by assigned direction.Steel ball with infinite scroll circulation between the guide rail, makes worktable do the high precision rectilinear motion along guide rail at slide block, and friction factor is down to 1/50th of tradition slip guiding, has very high bearing accuracy.Therefore, not only satisfy high-precision requirement, and high efficiency, durability are good, good reliability.
There are two kinds of keyboards man-machine interface aspect, the control panel of electric appliance box to the device input control order.When requiring to navigate to particular location, use the numeric keypad operation, the increment of target location and current location is input in the system by digital keys, system carries out corresponding actions according to input parameter; When requiring continuous firing, use the function keyboard operation, worktable can be realized speed governing in addition along the guide rail to-and-fro movement.The LED charactron realizes that immediate updating shows current position coordinates, and precision reaches 0.01mm.Therefore, although simplicity of design, handled easily, not lost of humanity.
On the whole, whole device existing three-dimensional carving machine in the prior art, its design is simpler, and installation is more prone to, and economic accuracy is better, can be applicable to automatic location and detection of straight lines microspur and changes.
Claims (1)
1. a High Precision One Dimensional automatic calibration device is characterized in that, comprises mechanical motion mechanism, electric appliance box, stepper motor, driver, controller, control panel and Switching Power Supply,
Described mechanical motion mechanism is positioned at the left side of whole device, comprises worktable, line slideway, ball-screw, travel switch, shaft coupling, supporting seat, rubber cushion blocks, level meter and base plate;
Described line slideway is comprised of two guide rails and four slide blocks, and guide rail is bolted on base plate, and the guide rail stroke terminal is equipped with travel switch,
Described ball-screw is comprised of leading screw, nut and ball, and nut and worktable are bolted, and the leading screw two ends of ball-screw are limited on the base plate by fixed mounting base,
Described worktable carries and slides on the line slideway by four slide blocks, and each slide block and worktable adopt bolt to fix,
Be lined with six rubber cushion blocks below the described base plate, evenly distribute, base plate adds level meter;
Described electric appliance box is placed in the right side of base plate, and electric appliance box inside is equipped with stepper motor, driver, controller and Switching Power Supply, and stepper motor, driver, controller and Switching Power Supply all are fixed on the base plate;
The output shaft of described stepper motor is connected with the leading screw input end by shaft coupling;
Described controller is comprised of single-chip microcomputer and peripheral components, and described single-chip microcomputer is AT89S52, and described peripheral components comprises storer 24C08 and input and shows that using chip 8279, storer 24C08 to be connected with chip is connected with single chip computer AT 89S52 respectively;
Described driver is connected with stepper motor with single-chip microcomputer respectively;
It is positive that described control panel is installed on described electric appliance box, and control panel comprises keyboard load module and LED charactron display module, and keyboard load module and LED charactron display module are connected with single chip computer AT 89S52 by chip 8279 respectively;
Described Switching Power Supply is connected with driver.
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| CN 201220286348 CN202694193U (en) | 2012-06-19 | 2012-06-19 | High-precision one-dimensional automatic calibration device |
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| CN 201220286348 CN202694193U (en) | 2012-06-19 | 2012-06-19 | High-precision one-dimensional automatic calibration device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883910A (en) * | 2017-11-09 | 2018-04-06 | 中国航发湖南动力机械研究所 | Portable gap sensor checkout and diagnosis instrument |
| CN108113640A (en) * | 2016-11-28 | 2018-06-05 | 沈阳新松机器人自动化股份有限公司 | A kind of pupil automatic positioning and tracking equipment |
| CN109186498A (en) * | 2018-02-11 | 2019-01-11 | 上海机动车检测认证技术研究中心有限公司 | A kind of integrated correction device |
-
2012
- 2012-06-19 CN CN 201220286348 patent/CN202694193U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113640A (en) * | 2016-11-28 | 2018-06-05 | 沈阳新松机器人自动化股份有限公司 | A kind of pupil automatic positioning and tracking equipment |
| CN107883910A (en) * | 2017-11-09 | 2018-04-06 | 中国航发湖南动力机械研究所 | Portable gap sensor checkout and diagnosis instrument |
| CN109186498A (en) * | 2018-02-11 | 2019-01-11 | 上海机动车检测认证技术研究中心有限公司 | A kind of integrated correction device |
| CN109186498B (en) * | 2018-02-11 | 2024-04-30 | 上海机动车检测认证技术研究中心有限公司 | Comprehensive calibration device |
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