CN111290121A - Slit device with controllable two-side positions and control method thereof - Google Patents
Slit device with controllable two-side positions and control method thereof Download PDFInfo
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- CN111290121A CN111290121A CN202010145204.XA CN202010145204A CN111290121A CN 111290121 A CN111290121 A CN 111290121A CN 202010145204 A CN202010145204 A CN 202010145204A CN 111290121 A CN111290121 A CN 111290121A
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- G02—OPTICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
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Abstract
The invention discloses a slit device with controllable positions at two sides, which comprises a substrate; the upper side of the base body is fixedly connected with a guide rail, a left slit blade assembly and a right slit blade assembly which slide along the guide rail are arranged on the guide rail, and the left slit blade assembly and the right slit blade assembly are connected with a relative action assembly for displacement of the blade assemblies; the left slit blade assembly and the right slit blade assembly or the relative action assembly are in signal connection with the controller; and the left slit blade assembly and/or the right slit blade assembly are/is provided with a displacement sensor assembly for measuring the displacement of the blade and a tool setting device for calibration, and the displacement sensor assembly and the tool setting device are in signal connection with the controller. The invention realizes that the left slit blade and the right slit blade can be independently adjusted in position; the width and the central position of the slit are simultaneously and independently adjustable, and the digital control of the width and the central position of the slit can be realized.
Description
Technical Field
The invention relates to the field of optical instruments, in particular to a slit device with controllable positions at two sides and a control method thereof.
Background
In the field of optical instrument applications, a slit refers to a gap formed in a light path by a pair of partitions, and determines the amount of light flux of an incident light beam. If the optical instrument requires that the emergent light flux can be adjusted as required, the adjustable slit can control the luminous flux of the emergent light beam.
The parallelism and symmetry of the slit opening, the uniformity of opening and closing, and the slit width have an important influence on the slit performance. The current slits are mainly of the following types: 1. a fixed width slit. The slit has simple structure and low cost, and the width of the slit can not be adjusted. 2. The screw rod is adopted to adjust the one-way or two-way adjustable slit of the slit width. 3. The wedge-shaped sliding block is adopted to push the two blades of the slit to move transversely, so that the adjusting mode of adjusting the width of the slit in a bidirectional and adjustable mode is realized. The structure has the defects that the slit opening precision is low, the opening symmetry is not high, the stability of the two blades is poor in the adjusting process, and phenomena of creeping, interruption, blocking and the like easily occur. 4. The elastic hinge structure is utilized to realize the bidirectional adjustment of the slit width. The prior art is an invention patent applied by Chinese university of science and technology in 2009, and has the application number of 200910116537.3, and the name of the invention is 'small-sized precise slit device with adjustable slit width'. The defects are that the elastic hinge body has a complex structure and poor processing manufacturability.
Disclosure of Invention
In view of the above technical problems, the present technical solution provides a slit device with controllable two side positions and a control method thereof, which can effectively solve the above problems.
The invention is realized by the following technical scheme:
a slit device with two controllable edge positions comprises a base body, a guide rail, a left slit blade assembly, a right slit blade assembly, a blade displacement relative action assembly and a controller; the guide rail, the blade displacement relative action assembly and the control module are arranged on the base body, and the left slit blade assembly and the right slit blade assembly can move along the guide rail.
Further, a guide rail is installed on the upper side of the base body, a left slit blade assembly and a right slit blade assembly which slide along the guide rail are installed on the guide rail, and the left slit blade assembly and the right slit blade assembly are provided with opposite acting assemblies for displacement of the blade assemblies; the left slit blade assembly and the right slit blade assembly or the relative action assembly are in signal connection with the controller; and the left slit blade assembly and/or the right slit blade assembly are/is provided with a tool setting device for calibration, and the tool setting device is in signal connection with the controller.
Further, the left slit blade assembly, the right slit blade assembly or the relative action assembly, and the cutter aligner are electrically connected with the controller; the controller is provided with a state machine, a memory, an arithmetic unit, a power input port and a signal input and output part; the signal input and output part adopts a wired input port or a wireless data transceiving module.
Furthermore, the tool setting device is provided with two probes which are respectively fixed on the left slit blade assembly and/or the right slit blade assembly; when the two probes are respectively fixed on the left slit blade assembly and the right slit blade assembly, the two probes are used for detecting the reference zero positions of the two blades; when the two probes are simultaneously fixed on the left slit blade assembly or the right slit blade assembly, one of the two probes is used for detecting the reference zero point position of the blade, and the other probe is used for detecting the relative zero slit width position of the other blade.
Furthermore, a probe of the tool setting device adopts a tool setting electrode, or a pressure detection probe of a strain-based pressure sensor or a film pressure sensor; when the probe of the tool setting device adopts a tool setting electrode, the substrate and the slit pair are subjected to insulation treatment between the components. When the probe of the tool setting device adopts an electrode, the calibration piece also adopts the electrode; the electrode and the calibration member conductor are brought into contact to generate a calibration signal.
Furthermore, the relative action assembly adopts a stator of a linear motor, and a linear motor rotor is arranged at the joint of the left slit blade assembly and the right slit blade assembly and the stator of the linear motor.
Furthermore, the relative action component adopts a rotating motor and a screw rod connected with the rotating motor, and fixing nuts which act on the screw rod and move along with the rotation of the screw rod are arranged in the left slit blade component and the right slit blade component; forming a screw nut pair.
Furthermore, the relative action component adopts a fixed screw rod, and a rotatable nut acting on the fixed screw rod is arranged at the joint of the left slit blade component and the right slit blade component and the fixed screw rod to form a screw rod nut pair. The rotatable nut is fixedly connected with a rotor of the rotating motor or integrally formed.
Further, a pressure spring and/or a tension spring is/are arranged between the left slit blade assembly and the right slit blade assembly, and between the fixing piece and the left slit blade assembly and the fixing piece; or a double nut and a pressure spring are adopted by each slit blade assembly to eliminate the gap between the screw rod and the nut.
Furthermore, double nuts and a pressing/tension spring are adopted in the left slit blade assembly and the right slit blade assembly; or the nuts in the left slit blade assembly and the right slit blade assembly adopt pre-tightened lead screw nut assemblies; there is no gap between them.
Furthermore, the rotating motor adopts an open-loop stepping motor component, a closed-loop stepping component, a servo motor component or an ultrasonic motor component.
Further, the stepper motor assembly employs an open or closed loop stepper motor assembly with incremental or absolute encoders mounted on the motor shaft.
Furthermore, a braking device is arranged in the left slit blade assembly and the right slit blade assembly. So as to ensure that the position of the blade component is fixed when the device is powered off or the position and the width of the seam are not required to be adjusted after the power is off or the adjustment is finished.
A control method of a slit device with two controllable sides is characterized in that the running tracks and the positions of a left slit blade assembly and a right slit blade assembly are respectively controlled by a relative action assembly, and the width of a slit to be formed and the position of the center of the slit can be controlled; the method is characterized in that: the method comprises the following specific steps:
the method comprises the following steps: optionally correcting the slit device;
step two: setting the width of the slit device;
step three: and regulating and controlling the left slit blade and the right slit blade to run according to the set slit width, and forming a symmetrical slit at the central position of the slit device.
Furthermore, the setting of the width of the slit device in the second step is to set the width of the slit device through an external control device, and transmit the width to the controller through a signal input port of the controller.
Further, the operation mode of the left slit blade assembly and the right slit blade assembly in the third step is as follows: the controller controls the relative action component or the left slit blade component and the right slit blade component to move, and drives the left slit blade component and the right slit blade component to do relative movement, so that the left slit blade and the right slit blade are driven to be close to the center position of the slit device.
A calibration method of a slit device with controllable positions on two sides is characterized in that when two probes are respectively fixed on a left slit blade assembly and a right slit blade assembly, the calibration method of the blade assembly comprises the following steps: and controlling the left slit blade assembly and the right slit blade assembly to move away from each other and move towards the two sides until the tool setting probe contacts the reference zero calibration surface, forming a zero reference signal for the tool setting probe, and recording zero reference positions of the left slit blade assembly and the right slit blade assembly.
A calibration method of a slit device with controllable positions on two sides is provided, when two probes are simultaneously fixed on a left slit blade assembly or a right slit blade assembly, the calibration method of the blade assembly is as follows:
step 1: controlling the left slit blade assembly or the right slit blade assembly to move away from the other slit blade assembly and move towards the corresponding side edge until the tool setting probe contacts the reference zero point calibration surface, forming a zero point reference signal for the tool setting probe, and recording the zero point reference position of the blade;
step 2: and reading the middle position of the slit set in the controller, controlling the left slit blade assembly or the right slit blade assembly provided with the probe to move to the middle position, controlling the other slit blade assembly to move towards the middle position, stopping the operation of the other slit blade assembly until a zero slit width signal is generated, and recording the zero slit width position of the blade.
The left and right in the present invention are not absolute, but only for convenience of description.
Advantageous effects
Compared with the prior art, the slit device with the controllable two sides and the control method thereof provided by the invention have the following beneficial effects:
(1) the left slit blade assembly and the right slit blade assembly are arranged, and the left slit blade assembly and the right slit blade assembly are both in relative action with the blade displacement relative action assembly, and are driven to move left and right on the track under the action of the blade displacement relative action assembly, so that the left slit blade and the right slit blade can be independently adjusted in position; the left slit blade component and the right slit blade component or the relative action component are in signal connection with the controller, so that the slit width and the central position can be simultaneously and independently adjusted, and the slit width and the central position can be digitally controlled.
(2) The calibration automation is realized by setting the tool setting probe and connecting the tool setting probe with the controller; the left slit blade assembly and the right slit blade assembly are calibrated, and the positions of the slit width and the center position caused by the factors such as step loss, interference, abrasion, displacement measurement accumulated error and the like can be eliminated.
(3) The signal input part of the controller adopts a wired input port or a wireless data transceiving module; the slit device is connected with an upper computer-computer through a wired data line or a wireless data transmission module, so that the slit width of the slit device can be controlled by the upper computer, and the automation degree is effectively improved.
(4) The slit device in the technical scheme has no manual adjusting part, and is easy to be arranged in equipment which is miniaturized and totally closed.
(5) When adopting step motor, the cooperation of step motor and encoder, in addition the setting of cooperation lead screw lead, step motor's step angle is 1.8 degrees, and 360/1.8=200 pulses are required in the rotatory week of motor, can set up the fine fraction of motor drive and be 4, then the rotatory week of motor needs 200 x 4=800 pulses, because step motor lead screw lead is 1 millimeter again, according to lead/pulse number = the linear displacement of a pulse, so the linear displacement of a pulse is 1.25 microns. The operation precision of the stepping motor can reach the micron level; the slit device is high in precision and more reliable.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the connection of the controller in embodiment 1 of the present invention.
FIG. 3 is a schematic view of the overall structure of embodiment 2 of the present invention.
FIG. 4 is a schematic view of the overall structure of embodiment 3 of the present invention.
FIG. 5 is a schematic view of the overall structure of embodiment 4 of the present invention.
Fig. 6 is a structural view of a linear motor in embodiment 4.
Fig. 7 is a cross-sectional view a-a of fig. 6.
Fig. 8 is a schematic view of the magnetic scale structure in embodiment 4.
Fig. 9 is a schematic diagram of the controller connection in embodiment 4.
Fig. 10 is a specific flowchart illustrating the control method in embodiment 5.
Marking in the accessory: the device comprises a base body 1, a guide rail 2, a left slit blade assembly 3-1, a right slit blade assembly 3-2, a fixed lead screw 4-1, a rotary lead screw 4-2, a magnetic shaft 4-3, a left support 5-1, a right support 5-2, a left motor 6-1, a right motor 6-2, a left motor rotor 6-3, a right motor rotor 6-4, a tool setting device 7-1, a tool setting probe 7-2, a cable 8-1, a cable 8-2, a cable 8-3, a cable 8-4, a magnetic grid ruler read head cable 8-5, a magnetic grid ruler read head communication cable 9, a control module 10, an interface 11-1, a pressure spring 11-2, a pressure spring 13, a magnetic grid ruler base body, 14. Magnetic grid ruler, 15-1 magnetic grid ruler reading head and 15-2 magnetic grid ruler reading head.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some embodiments of the invention, not all embodiments. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and all of them should fall into the protection scope of the present invention.
Example 1
As shown in FIG. 1, a slit device with two controllable edge positions comprises a base body 1, a guide rail 2, a left slit blade assembly 3-1, a right slit blade assembly 3-2, a blade displacement relative action assembly and a controller 9; the guide rail 2, the blade displacement relative action assembly and the controller 9 are arranged on the base body 1, and the left slit blade assembly 3-1 and the right slit blade assembly 3-2 can move along the guide rail 2; the left slit blade assembly 3-1 and the right slit blade assembly 3-2 or the opposing components are in signal connection with the controller 9. The controller 9 includes a motor driver.
A guide rail 2 is fixedly installed on the top surface of the base body 1, in the embodiment, the guide rail 2 is MGN7 guide rail 2; the left bracket 5-1 and the right bracket 5-2 are fixedly connected with the top surface of the base body 1 at the two ends of the guide rail 2. The guide rail 2 is provided with a left slit blade component 3-1 and a right slit blade component 3-2 which move left and right along the guide rail 2; the left slit blade assembly 3-1 and the right slit blade assembly 3-2 respectively comprise a left sliding block and a right sliding block which are arranged on the guide rail 2 and slide along the guide rail 2, the top of the left sliding block is fixed or welded and fixed or integrally formed with a left slit blade through a fastener, and the top of the right sliding block is fixed or welded and fixed or integrally formed with a right slit blade through a fastener; the top parts of the left sliding block and the right sliding block are connected with a relative action component for displacement of the blade component; in the embodiment, the relative action component adopts a fixed screw rod 4-1, and two ends of the fixed screw rod 4-1 are fixedly arranged on a left bracket 5-1 and a right bracket 5-2.
The top of the left slider and the top of the right slider are respectively and fixedly connected with motors 6-1 and 6-2 with controllable rotation angles, and in the embodiment, the motors with controllable rotation angles adopt 20BYGH hybrid run-through stepping motors. The stepping motor driver is provided with an encoder, and distance measurement calculation can be carried out through the encoder.
At the center of the motors 6-1 and 6-2, a rotatable nut is provided in the rotor thereof, with a step angle of 1.8 degrees. 360/1.8=200 pulses are needed for one rotation of the motor, the fine division number of the motor driver can be set to be 4, 200 × 4=800 pulses are needed for one rotation of the motor, and because the lead of the screw rod of the stepping motor is 1 mm, the linear displacement of one pulse is 1.25 micrometers according to the lead/pulse number = one pulse linear displacement.
The rotatable nut acts on the fixed lead screw 4-1, the thread pitch of the rotatable nut is 1 mm, namely the lead of the fixed lead screw 4-1 is 1 mm; the motors 6-1 and 6-2 adopt four-subdivision driving, and the displacement resolution of the blade is 1.25 microns. The left slit blade component 3-1 and the right slit blade component 3-2 can move left and right along the guide rail 2 under the drive of the stepping motors 6-1 and 6-2 and the fixed screw rod 4-1.
A tool setting device 7 for calibration is arranged between the right slit blade and the right motor; probes 7-1 and 7-2 of the tool setting device 7 adopt tool setting electrodes, and insulation treatment is carried out between the tool setting electrodes 7-1 and 7-2 and the substrate 1 and between the tool setting components 3-2 of the right slit; the tool setting device 7 is provided with two probes 7-1 and 7-2, the two probes 7-1 and 7-2 are respectively arranged on the left side and the right side of the tool setting device 7, one of the two probes 7-1 and 7-2 is used for detecting the reference zero position of the blade, and the other probe is used for detecting the relative zero seam width position of the other blade. When the probes 7-1 and 7-2 of the tool setting device 7 are contacted with the conductor of the calibration piece, a calibration signal is generated.
The top parts of the left sliding block and the right sliding block are respectively fixedly connected with motors 6-1 and 6-2 with controllable rotation angles; namely, the left rotating motor 6-1 and the right rotating motor 6-2, and the cutter setting device 7 are electrically connected with the controller 9; the controller 9 is provided with a state machine, a memory, an arithmetic unit, a power input port and a signal input and output part; the signal input and output part adopts a wired input port 10 or a wireless data transceiving module. In this embodiment, the controller is a controller with model number STC89C52 RC. If the wireless data transceiver module is adopted, the wireless data transceiver module adopts an HC-05 type Bluetooth module.
As shown in FIG. 2, in the embodiment, the left rotating motor 6-1, the right rotating motor 6-2 and the tool setting device 7 are in signal connection with the controller 9 through cables 8-1, 8-2 and 8-3; the controller 9 comprises a single chip microcomputer MCU for control, an Interface port 10 connected with an upper computer or a computer, a tool setting module Zero connected with the tool setting device, a Driver1 and a Driver2 connected with a stepping Motor Driver, and a Motor1 and a Motor2 stepping Motor signal connected with the stepping Motor Driver.
Zero is the Zero signal and Zero slot width signal generated by the tool setting module, Interface is port 10, Driver1 and Driver2 are stepper Motor drivers, and Motor1 and Motor2 are stepper motors.
The working principle is as follows: the slit device is mainly used for generating a designated slit, inputting slit data into an upper computer, setting the central position and the slit width of the slit, and outputting the data to a controller through a port; and after the controller receives the data, the controller calculates the displacement of the left and right slit blade moving components and controls the left and right motors to operate so as to enable the left slit blade component and the right slit blade component to move to the specified positions.
The left and right in the present invention are not absolute, but only for convenience of description.
Example 2:
example 1 in practice, it was found that the nut idled when the left and right slit blade assemblies were in operation; this is due to the disadvantage of the presence of the gap caused by the use of non-ball screw nuts.
Therefore, the inventor makes an improvement on the basis of the embodiment 1; thereby reducing the clearance between the nut and the screw rod; thereby achieving the purpose of reducing or eliminating the gap problem between the nut and the lead screw.
As shown in fig. 3, compression springs 11-1 and 11-2 are arranged on a fixed lead screw 4-1 between a left slit blade assembly 3-1 and a right slit blade assembly 3-2, and between the right slit blade assembly 3-2 and a right bracket 5-2; when the pressure springs are adopted, the lengths of the pressure springs 11-1 and 11-2 in a free state are slightly larger than the maximum value of the corresponding distance, the two ends are naturally contacted, and when the tension springs are adopted, tension spring connecting holes are formed in the pressure springs 3-1, 3-2 and 5-2.
Or a double nut and a pressure spring are adopted by each slit blade component to eliminate the clearance between the fixed screw rod and the nut.
Other components, the positional relationship and the connection relationship of the components, and the control and calibration method in this embodiment are the same as those in embodiment 1, and will not be described in detail.
Example 3
As shown in fig. 4, a slot device with two controllable edge positions comprises a base body 1, a guide rail 2 is fixedly installed on the top surface of the base body 1, in the embodiment, the guide rail 2 adopts an MGN7 guide rail; the left rotating motor 6-1 and the right rotating motor 6-2 are respectively and fixedly connected to the top surface of the base body 1 and are positioned at the two ends of the guide rail 2; the output ends of the left rotating motor 6-1 and the right rotating motor 6-2 are respectively connected with a screw rod 4-2 in a transmission way. The screw 4-2 and the motor shaft may be integrated or may be connected by a coupling.
The guide rail 2 is provided with a left slit blade component 3-1 and a right slit blade component 3-2 which move left and right along the guide rail 2; the left slit blade assembly 3-1 and the right slit blade assembly 3-2 respectively comprise a left sliding block and a right sliding block which are arranged on the guide rail 2 and slide along the guide rail 2, one side of the left sliding block is fixed or welded and fixed or integrally formed with a left slit blade through a fastener, and one side of the right sliding block is fixed or welded and fixed or integrally formed with a right slit blade through a fastener; the upper sides of the left sliding block and the right sliding block are connected with a relative action component; in the embodiment, the relative action component adopts a rotatable lead screw 4-2 connected with the output end of the motor. The middle parts of the left sliding block and the right sliding block are provided with through holes which interact with the lead screw 4-2, and threads matched with the lead screw are arranged in the through holes; or a fixing nut fixedly connected with the sliding block is arranged in the through hole, and a thread matched with the screw rod is arranged in the fixing nut. The screw rod of the left rotating motor penetrates through the through hole of the left sliding block and then is connected with the hollow hole in the right sliding block, and the inner wall of the hollow hole is a smooth surface; and a lead screw 4-2 of the right rotating motor 6-2 penetrates through a through hole of the right slider and then continues to derive leftwards, and the length of the right lead screw 4-2 is greater than half of the length of the guide rail 2. The left slider and the right slider can move left or right along the guide rail 2 along with the rotation of the lead screw 4-2.
In order to prevent the stepping motors 6-1 and 6-2 from being out of step, the motors 6-1 and 6-2 in this embodiment select two schemes, wherein the first scheme adopts a closed-loop stepping motor, and the second scheme adopts a servo motor, which all adopt 1000 linear photoelectric encoders, and the stepping angle of the linear photoelectric encoders is 0.36 degrees. The blade displacement resolution was 0.5 microns with a lead of the lead screw (i.e., the distance between the two nuts) of 0.5 mm.
In this embodiment two tension springs 11-1 and 11-2 are used to eliminate the play of the lead screw nut. The two tension springs 11-1 and 11-2 are respectively arranged between the left bracket 5-1 and the fixing nut in the left sliding block and between the right bracket 5-2 and the fixing nut in the right sliding block.
Other components, the positional relationship and the connection relationship of the components, and the control and calibration method in this embodiment are the same as those in embodiment 1, and will not be described in detail.
Example 4
As shown in fig. 5, a two-side position-controllable slit device comprises a base body 1, a linear guide rail 2 is fixedly installed on the top surface of the base body 1, and in the embodiment, the guide rail 2 adopts an MGN7 guide rail; the left bracket 5-1 and the right bracket 5-2 are respectively and fixedly connected to the top surface of the base body 1 at the two ends of the guide rail 2; the guide rail 2 is provided with a left slit blade assembly 3-1 and a right slit blade assembly 3-2 which move left and right along the guide rail 2; the left slit blade assembly 3-1 and the right slit blade assembly 3-2 respectively comprise a left sliding block and a right sliding block which are arranged on the guide rail 2 and slide along the guide rail 2, the top of the left sliding block is welded and fixed with or integrally formed with a left slit blade, and the top of the right sliding block is welded and fixed with or integrally formed with a right slit blade; the top parts of the left sliding block and the right sliding block are connected with a relative action component for displacement of the blade component; in the embodiment, the relative action component adopts a magnetic shaft 4-3, and both ends of the magnetic shaft 4-3 are arranged on the left bracket 5-1 and the right bracket 5-2.
As shown in fig. 6 and 7, the top of the left slider and the top of the right slider are respectively fixedly connected with a left linear motor and a right linear motor, the left linear motor and the right linear motor are internally provided with through holes, motor rotors 6-3 and 6-4 are arranged in the holes, the motor rotors 6-3 and 6-4 act on a magnetic shaft 4-3, and the motor rotors 6-3 and 6-4 are connected with a controller 9 through cables 8-1 and 8-2; the left slider and the right slider can slide along the guide rail 2 under the driving of the motor rotors 6-3 and 6-4.
As shown in fig. 8, a magnetic grid ruler base 13 is fixedly installed on the top surface of the base 1 at the other side of the guide rail 2, a magnetic grid ruler 14 is installed on the magnetic grid ruler base 13, magnetic grid ruler reading heads 15-1 and 15-2 which can slide along the magnetic grid ruler 14 are installed on the magnetic grid ruler 14, and the magnetic grid ruler reading heads 15-1 and 15-2 are magnetically connected with motor movers 6-3 and 6-4 of the linear motor. The magnetic grid ruler read heads 15-1 and 15-2 are in signal connection with the controller 9 through magnetic grid ruler read head communication cables 8-4 and 8-5.
The magnetic grid ruler read heads 15-1 and 15-2 are constructed using AS5311 core pieces, and the relationship between AS5311 and the magnetic grid ruler 14 and the microprocessor 9 are shown in FIGS. 6 to 8, respectively. AS can be seen, the resolution of the displacement measurement system consisting of AS5311 and the corresponding magnetic scale 14 can reach 2/4096 mm =0.489 μm. The magnetic grid ruler 14, the magnetic grid ruler reading head 15-1 and the linear motor rotor 6-1 or the magnetic grid ruler reading head 15-2 and the linear motor rotor 6-2 form an accurate closed-loop position control system.
In this embodiment, a block diagram of the controller 9 is shown in fig. 9. Two of the AS5311 form the magnetic scale read heads 15-1 and 15-2. The servo control method for the driving and displacement of the motor can adopt a known driving and control scheme. The present embodiment does not make any modification thereto, and will not be described in more detail here.
Other components, the positional relationship and the connection relationship of the components, and the control and calibration method in this embodiment are the same as those in embodiment 1, and will not be described in detail.
Example 5
The control method of a slot device with two controllable sides, through controlling the running position of the left slot blade component and the right slot blade component separately by the relative action component, can control the width of the slot to be formed and the position of the slot center; the method is characterized in that: the method comprises the following specific steps:
the method comprises the following steps: optionally correcting the slit device; this step of calibration is only used on demand, typically once at first use or for 3-5 consecutive days.
Step two: setting the width of the slit device: the central position of the slit and the width of the slit device are set through the external control equipment and are transmitted to the controller through the signal input port of the controller.
Step three: after the controller receives the data, the displacement of the left and right slit blade moving components is calculated according to the set central position and slit width of the slit, the operation of the left slit blade and the right slit blade is regulated and controlled, and a symmetrical slit is formed at the central position of the slit device;
the controller controls the left motor and the right motor to move relatively to drive the left slit blade assembly and the right slit blade assembly to move relatively, so that the left slit blade and the right slit blade are driven to approach to the center of the slit device.
In order to eliminate the positions of the gap width and the center caused by the factors such as step loss, interference, lead screw pair abrasion, displacement measurement accumulated error and the like, the reference zero point and the zero gap width of the device can be calibrated by using the tool setting device 7.
A calibration method of a slit device with controllable positions on two sides is provided, when two probes are simultaneously fixed on a left slit blade assembly or a right slit blade assembly, the calibration method of the blade assembly is as follows:
step 1: controlling the right slit blade assembly to move to the right side until the cutter probe contacts the inner side wall of the right bracket, namely the reference zero calibration surface; forming a zero reference signal for the tool setting probe on the right side, and recording the zero reference position of the blade;
step 2: and reading the distance between the middle position of the calibration slit received by the controller and the reference zero point, controlling the right slit blade assembly to run to the reference zero point of the middle position, and then controlling the left slit blade assembly to run towards the middle until the probe and the left slit blade assembly generate a zero slit width signal, stopping the running of the other slit blade assembly, and recording the zero slit width position of the blade. Record the left and right slit blade assemblies position as 0 and width as 0.
Claims (10)
1. A slot device with two controllable edge positions comprises a base body; the method is characterized in that: the upper side of the base body (1) is fixedly connected with a guide rail (2), a left slit blade assembly (3-1) and a right slit blade assembly (3-2) which slide along the guide rail (2) are installed on the guide rail (2), and the left slit blade assembly (3-1) and the right slit blade assembly (3-2) are provided with relative action assemblies for displacement of the blade assemblies; the left slit blade assembly (3-1) and the right slit blade assembly (3-2) or the relative action assembly are in signal connection with the controller (9); the left slit blade assembly (3-1) and/or the right slit blade assembly (3-2) are/is provided with a tool setting device (7) for calibration, and the displacement sensor assembly and the tool setting device (7) are in signal connection with a controller (9).
2. A two-edge position controllable slit apparatus as claimed in claim 1, wherein: the relative action assembly adopts a stator of a linear motor, and a linear motor rotor is arranged at the joint of the left slit blade assembly (3-1) and the right slit blade assembly (3-2) and the stator of the linear motor.
3. A two-edge position controllable slit apparatus as claimed in claim 1, wherein: the relative action component adopts a rotating motor and a screw rod connected with the rotating motor, and fixing nuts which act on the screw rod and move along with the rotation of the screw rod are arranged in the left slit blade component and the right slit blade component; or the relative action component adopts a fixed screw rod, the joint between the left slit blade component and the right slit blade component and the fixed screw rod is provided with a rotatable nut which acts on the fixed screw rod, and the rotatable nut is connected with the rotating motor.
4. A two-edge position controllable slit apparatus as claimed in claim 3, wherein: and a pressure spring and/or a tension spring (11-1) and/or a tension spring (11-2) are/is arranged between the left slit blade assembly (3-1) and the right slit blade assembly (3-2) and the fixing piece.
5. A two-edge position controllable slit apparatus as claimed in claim 3, wherein: the left slit blade component (3-1) and the right slit blade component (3-2) adopt double nuts and pressure/tension springs (11-1) and (11-2); or the nuts in the left slit blade assembly (3-1) and the right slit blade assembly (3-2) adopt pre-tightened lead screw nut assemblies.
6. A two-edge position controllable slit apparatus as claimed in claim 1, wherein: the left slit blade assembly (3-1), the right slit blade assembly (3-2) or the relative action assembly, and the cutter setting device (7) are electrically connected with the controller (9); the controller (9) is internally provided with a state machine, a memory, an arithmetic unit, a power input port and a signal input and output part; the signal input and output part adopts a wired input port (10) or a wireless data transceiving module.
7. A two-sided position controllable slit apparatus as claimed in any of claims 1-6, wherein: the tool setting device (7) is provided with two probes (7-1) and (7-2), and the two probes (7-1) and (7-2) are respectively fixed on the left slit blade assembly (3-1) and/or the right slit blade assembly (3-2); when the two probes (7-1) (7-2) are respectively fixed on the left slit blade assembly (3-1) and the right slit blade assembly (3-2), the two probes (7-1) (7-2) are used for detecting the reference zero positions of the two blades; when two probes (7-1) (7-2) are simultaneously fixed on the left slit blade assembly (3-1) or the right slit blade assembly (3-2), one of the two probes (7-1) (7-2) is used for detecting the reference zero point position of the blade, and the other probe is used for detecting the relative zero slit width position of the other blade.
8. A two-edge position controllable slit apparatus as claimed in claim 7, wherein: the probes (7-1) and (7-2) of the tool setting device (7) adopt tool setting electrodes or pressure detection probes of a strain-based pressure sensor or a film pressure sensor; when the probes (7-1) and (7-2) of the tool setting device adopt tool setting electrodes, the tool setting electrodes and the substrate are subjected to insulation treatment.
9. The control method of a slit device with two controllable edges according to claim 8, wherein the width of the slit to be formed and the position of the slit center can be controlled by controlling the running track and the position of the left slit blade assembly (3-1) and the right slit blade assembly (3-2) respectively through the relative action component; the method is characterized in that: the method comprises the following specific steps:
the method comprises the following steps: optionally, performing a calibration operation on the slit device;
step two: setting the width of the slit device;
step three: and regulating and controlling the left slit blade and the right slit blade to run according to the set slit width, and forming a symmetrical slit at the central position of the slit device.
10. A method for controlling a two-sided controllable slit apparatus as claimed in claim 9, wherein: the specific operation of the slit device calibration operation described in the first step is as follows:
when the two probes are respectively fixed on the left slit blade assembly and the right slit blade assembly, the blade assembly calibration method comprises the following steps: controlling the left slit blade assembly and the right slit blade assembly to move away from each other and move towards the two sides until the tool setting probe contacts a reference zero calibration surface, forming a zero reference signal for the tool setting probe, and recording zero reference positions of the left slit blade assembly and the right slit blade assembly;
when two probes are simultaneously fixed on a left slit blade assembly or a right slit blade assembly, the blade assembly calibration method is as follows:
step 1: controlling the left slit blade assembly or the right slit blade assembly to move away from the other slit blade assembly and move towards the corresponding side edge until the tool setting probe contacts the reference zero point calibration surface, forming a zero point reference signal for the tool setting probe, and recording the zero point reference position of the blade;
step 2: and reading the middle position of the slit set in the controller, controlling the left slit blade assembly or the right slit blade assembly provided with the probe to move to the middle position, controlling the other slit blade assembly to move towards the middle position, stopping the operation of the other slit blade assembly until a zero slit width signal is generated, and recording the zero slit width position of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145204.XA CN111290121A (en) | 2020-03-05 | 2020-03-05 | Slit device with controllable two-side positions and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145204.XA CN111290121A (en) | 2020-03-05 | 2020-03-05 | Slit device with controllable two-side positions and control method thereof |
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| CN111290121A true CN111290121A (en) | 2020-06-16 |
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| CN202010145204.XA Pending CN111290121A (en) | 2020-03-05 | 2020-03-05 | Slit device with controllable two-side positions and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946848A (en) * | 2021-01-29 | 2021-06-11 | 中国科学院苏州生物医学工程技术研究所 | High-precision closed-loop control slit adjusting device |
| CN114193002A (en) * | 2021-12-24 | 2022-03-18 | 苏州迈为科技股份有限公司 | Device for automatically controlling slit width and method for controlling slit width |
| CN114706072A (en) * | 2022-06-06 | 2022-07-05 | 中大检测(湖南)股份有限公司 | High-precision side slope monitoring radar double-shaft testing system and method |
-
2020
- 2020-03-05 CN CN202010145204.XA patent/CN111290121A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946848A (en) * | 2021-01-29 | 2021-06-11 | 中国科学院苏州生物医学工程技术研究所 | High-precision closed-loop control slit adjusting device |
| CN114193002A (en) * | 2021-12-24 | 2022-03-18 | 苏州迈为科技股份有限公司 | Device for automatically controlling slit width and method for controlling slit width |
| CN114706072A (en) * | 2022-06-06 | 2022-07-05 | 中大检测(湖南)股份有限公司 | High-precision side slope monitoring radar double-shaft testing system and method |
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