CN101794137B - Device and method used for controlling optical glass non-spherical surface element hot press shaping machine - Google Patents

Device and method used for controlling optical glass non-spherical surface element hot press shaping machine Download PDF

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Publication number
CN101794137B
CN101794137B CN2010101056082A CN201010105608A CN101794137B CN 101794137 B CN101794137 B CN 101794137B CN 2010101056082 A CN2010101056082 A CN 2010101056082A CN 201010105608 A CN201010105608 A CN 201010105608A CN 101794137 B CN101794137 B CN 101794137B
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speed
optical glass
die mould
control
heat pressing
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CN101794137A (en
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张平
姚祖义
黄罗生
朱伟
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Hangzhou Yongying Optic & Electronic Co Ltd
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Hangzhou Yongying Optic & Electronic Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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Abstract

The invention relates to a device and a method used for controlling an optical glass non-spherical surface element hot press shaping machine, which aim to solve the problem of providing the device and the method used for controlling the optical glass non-spherical surface element hot press shaping machine. The device can accurately control the technical parameters such as accurate position, speed, shaping time, pressure and the like of optical glass high-order non-spherical surface elements during precise hot press shaping and demoulding, and the dimension precision, the surface shape precision and the repeatability precision of the optical glass high-order non-spherical surface elements can be ensured. The device comprises an operation terminal, a display terminal, a positioning sensor, an encoder, a servo amplifier and a controller. The method mainly comprises the steps of starting self detection, parameter setting, original point return and resetting, and pressing and returning. The invention can be used for automatically controlling and completing the precise hot press shaping work procedures of optical glass non-spherical surfaces, prisms and combined elements of various electro-optical systems.

Description

Be used to control the device and method of optical glass non-spherical surface element hot press shaping machine
Technical field
The present invention relates to be used to control the device and method of optical glass non-spherical surface element hot press shaping machine, especially a kind of automaton to the accurate heat pressing forming machines of optical glass high order aspheric surface element.Be applicable to that automatic control accomplishes the accurate hot-briquetting modeling process of the optical glass non-spherical surface of various electro-optical systems, prism and subassembly.
Background technology
Optical glass high order aspheric surface element is accomplished as adopting cold worker's technology, needs series of processes: blank processing, roughing, corase grind, correct grinding, polishing; In fixed, edging, gummed.Cause mismachining tolerance higher, make difficulty, debugging trouble, expense is high.
For the manufacture craft of simplified processing process, employing optical glass high order aspheric surface element hot press shaping, that optical element is once hot-forming.Optical glass high order aspheric surface element hot press shaping technology is a kind of process technology of high-precision optical element, and optical glass high order aspheric surface element hot press shaping method commonly used has following three kinds:
1) optical glass blank of molten condition is poured into is higher than press molding in the low temperature mould of glass transition point more than 50 ℃.This method takes place on the die face that glass sticks in aspherical module easily, and product is easy to generate pore and wrinkle, is difficult for obtaining desired shapes and surface figure accuracy.
2) way of glass being implemented isothermal pressurization with mould obtains high precision easily the isothermal pressurization, but heat temperature raising, cooling needs long time, so speed of production is very slow.As in a hot-press arrangement, using several high order aspheric surface moulds, can enhance productivity.But adopt a plurality of high order aspheric surface moulds certainly will cause cost too high, restricted the widespread use of precise compression molding aspheric surface glass lens.
3) non-isothermal pressurization (be assigned in heat pressing forming machines outer device go to accomplish with part of functions); Improve the speed of production of each mould and the serviceable life of mould; But in solving hot-briquetting modeling process; Need to solve pressure, speed, temperature, the die mould time when how accurately to control the moulding and the demoulding automatically, accomplish a complete pressure-type process High-Speed Automaticly; Need to solve the problem on the die face that glass sticks in the high order aspheric surface mould.
Summary of the invention
The technical matters that the present invention will solve is: to the problem that exists in the prior art; A kind of device and method that is used to control optical glass non-spherical surface element hot press shaping machine is provided; This device should be able to accurately be controlled technological parameters such as the accurate hot-forming accurate position, speed, molding time, pressure during with the demoulding of optical glass high order aspheric surface element, guarantees optical glass high order aspheric surface size of component precision, surface figure accuracy and repeatable accuracy.
The technical scheme that the present invention adopted is: be used to control the device of optical glass non-spherical surface element hot press shaping machine, it is characterized in that, said device comprises:
Operating terminal is used for feeding device through manual ringing parameter value or executable operations is set;
Display terminal is used for duty and shows and alarm indication;
Alignment sensor is installed on the drive apparatus, is used for the position of induction heat pressing machine operation;
Scrambler is used for the ruuning situation of feedback servo motor;
Servoamplifier; Be used to receive the position signalling of the heat pressing forming machines operation that alignment sensor responds to and servomotor run signal that scrambler transmits and be transferred to controller; Simultaneously; Servoamplifier carries out computing and produces Control current with other control signal according to the high-speed pulse that controller transmits, through the action of scrambler control servomotor;
Controller; Be used to receive the operational order that operating terminal transmits or the parameter of setting; And the position signalling of servomotor run signal that transmits from servoamplifier and heat pressing forming machines operation; Carry out the integrated logic computing, produce high speed command pulse and the control signal of being correlated with and be transferred to servoamplifier, the while is in the duty of display terminal display system.
Said controller comprises programmable logic controller (PLC), high speed counting module and analog quantity input/output module.
Said scrambler connects servomotor.
Said drive apparatus comprises the guide rail and the main shaft of heat pressing forming machines.
The method that adopts this device to control optical glass non-spherical surface element hot press shaping machine may further comprise the steps:
Step 1, after system's electrifying startup and the self check success, controller is judged that according to the RD signal of servoamplifier and ALM signal condition system is whether ready and can be run well, in this way, changes step 2 over to;
Step 2 is set the heat pressing forming machines running parameter through operating terminal, comprising: RP setting value 50-100mm; Position of conversion point 100-180mm at a slow speed soon; Maximum position of conversion point 130-200mm, low speed returns buffer distance 0-30mm, fast speed 180-333mm/s; Jogging speed 10-50mm/s, the die mould time 0-100s of 1-4 section and the setting value of pressure 0-3.3T;
Step 3 is carried out original point return and the operation that resets through the button on the operating terminal, and at this moment, the heat pressing forming machines initialization is accomplished, and system is in ready state;
Step 4, when the outside provided working signal, said device was received operating instruction, pressed down at a high speed, when pressing down stroke when arriving set speed rate conversion point position, continuation presses down at a slow speed, reaches one section die mould pressure up to system pressure, changes step 5 over to;
Step 5, timing begins, suppress according to the die mould time and the pressure size of the 1-4 section of setting respectively, when the 4th section die mould timing then, change step 6 over to;
Step 6, system switches to position control mode, returns and returns at a high speed through low speed successively, gets back to the reference position.
The invention has the beneficial effects as follows: the device that can control heat pressing forming machines automatically is through being provided with hot-forming accurate position, speed, molding time, the pressure and other parameters during with the demoulding of aspherics spare; Reach temperature, pressure and the speed accurately controlled in the compression molding process; Guarantee the dimensional accuracy and the repeatable accuracy of compression molding optical element, solved the adhesion problems of glass and mould.System's control is convenient, and response is fast, good stability.
Description of drawings
Fig. 1 is the structured flowchart of the automaton of heat pressing forming machines of the present invention.
Fig. 2 is the wiring diagram of the automaton of heat pressing forming machines of the present invention.
Fig. 3 is the panel layout of the automaton of heat pressing forming machines of the present invention.
Fig. 4 is the workflow diagram of the automaton of heat pressing forming machines of the present invention.
Fig. 5 is the torque control model that the automaton of heat pressing forming machines of the present invention adopts.
Fig. 6 is the position control mode that the automaton of heat pressing forming machines of the present invention adopts.
Fig. 7 is the connected mode of pulse input in Fig. 6 position control mode.
Fig. 8 is the switching sequence figure that control system torque control model of the present invention converts position control mode into.
Embodiment
As shown in Figure 1, the automaton of present embodiment heat pressing forming machines comprises:
Operating terminal 1; This routine operating terminal is a control panel; As shown in Figure 3, panel is provided with each action button, like manual, automatic, up, descending, original point return, reset, warning etc.; The manual ringing that provides through operating personnel is provided with parameter value or executable operations, accurately shelving during like the optical element moulding and the demoulding, speed, molding time, pressure etc.
Display terminal 2 can be arranged on (see figure 3) on the control panel with operating terminal 1, and this display terminal is a digital display screen, is used for duty and shows and alarm indication.
Alignment sensor 3, this example does not provide accompanying drawing, and alignment sensor and external circuit are installed on the drive apparatus, like the guide rail of block press and main shaft etc., are used for the position of induction heat pressing machine operation.
Scrambler 4 adopts high performance servomotor scrambler, and resolution is the absolute position encoder of 262144 pulse/commentaries on classics, and the speed loop frequency response is high, has the ability of High Accuracy Control, meets international standard.Scrambler and servoamplifier are supporting, are used for the ruuning situation of feedback servo motor.Scrambler 4 connects servomotor 7 through cable.
Servoamplifier 5; As shown in Figure 2; The model that this example selects for use Mitsubishi Electric to produce is the servoamplifier of MR-J3S-350A (can also select MR-J2-A for use); Its control model has position control, speed control and torque control, can switch between three kinds of control models, and have USB and RS-422 serial communication function.Servoamplifier 5 is used to receive the position signalling of the heat pressing forming machines operation that alignment sensor 3 responded to and servomotor 7 run signal that scrambler 4 transmits and is transferred to controller 6; Simultaneously; Servoamplifier 5 carries out computing and produces Control current with other control signal according to the high-speed pulse that controller 6 transmits, through the action of scrambler 4 control servomotors 7.
Controller 6, this csr controller 6 comprise programmable logic controller (PLC) 6-1 (FX1N), high speed counting module 6-2 (FX2N-1HC) and analog quantity input/output module 6-3 (FXON-3A).Controller is used to receive the operational order that operating terminal 1 transmits, the parameter of setting; And the position signalling of servomotor run signal that transmits from servoamplifier 5 and heat pressing forming machines operation; Carry out the integrated logic computing; Produce high speed command pulse and the control signal of being correlated with and be transferred to servoamplifier 5, the while is in the duty of display terminal 2 display systems.
The present invention is used for the accurate heat pressing forming machines (equipment) that optical glass high order aspheric surface element is produced in control automatically, mainly accomplishes the accurate hot-briquetting modeling process of optical glass high order aspheric surface element.The mould that needs the processing optical element is installed on the worktable of controlled heat pressing forming machines; Mould is installed in advance on the last heated base dish and following heated base dish of heat pressing forming machines; The heated base dish is heated simultaneously and is reached 800-1000 ℃ up and down; Softening good optical element blank is put on the mould that has heated up exactly, and temperature range is pressed about 300-800 ℃; Pressure is about the 5-1 ton; According to the demands of different of material, size, weight and the fusing point of processed element, confirm the extreme higher position of this stock supporting station, confirm the running parameter (pressure when comprising the moulding and the demoulding, speed, temperature, die mould time) of accurate hot-press forming device.Concrete technology may further comprise the steps with reference to figure 4:
Step 1, after this device electrifying startup and the self check success, controller 6 is judged that according to the RD signal of servoamplifier 5 and ALM signal condition system is whether ready and can be run well, in this way, changes step 2 over to;
Step 2, operating personnel comprise: RP setting value 50-100mm through operating terminal 1 initialization system parameter; Position of conversion point 100-180mm at a slow speed soon; Maximum position of conversion point 130-200mm, low speed returns buffer distance 0-30mm, fast speed 180-333mm/s; Jogging speed 10-50mm/s, the die mould time 0-100s of 1-4 section and the setting value of pressure 0-3.3T;
Step 3, after set accomplishing, operating personnel carry out original point return and the operation that resets through the button on the operating terminal 1, re-power like system, or after mechanical location changed artificially, need do original point return and reset operation.At this moment, system initialization is accomplished, and system is in ready state;
Step 4 is when operating personnel press the operation button, when providing working signal; This device (automaton of heat pressing forming machines) is received operating instruction, and the LOP of the given servoamplifier 5 of programmable logic controller (PLC) 6-1 (control is switched) signal condition is OFF, and servo-drive system is in the torque control model; Limit 1 mode through the internal speed in the torque control model again, promptly putting SP1 is ON, and putting SP2 is OFF; The size of torque is controlled by TC (analog quantity output), and system high-speed presses down, when pressing down stroke when arriving set speed rate conversion point position; Through SP1 is put OFF, SP2 puts ON and selects internal speed restriction 2, continues to press down at a slow speed; When system pressure reaches one section die mould pressure (or maximum position of conversion point), change step 5 over to;
Step 5, the heat pressing forming machines timing begins, and after first die mould period arrives, the control output quantity of torque will be updated to second section pressure size, and begin second section die mould timing; After second die mould period arrives, the control output quantity of torque will be updated to the 3rd section pressure size, and begin the 3rd section die mould timing; After the 3rd die mould period arrives, the control output quantity of torque will be updated to the 4th section pressure size, and begin the 4th section die mould timing; When the 4th section die mould timing then, change step 6 over to;
Step 6; The LOP signal condition of the given servoamplifier 5 of programmable logic controller (PLC) 6-1 this moment is ON; System switches to position control mode, returns the setting value of buffer distance and jogging speed according to low speed, produces the high-speed pulse instruction of respective numbers and frequency; Be connected with servoamplifier 5 through PP (pulse signal) and NP (control direction), thereby control drive apparatus low speed returns; Then, according to the current physical location of system and the distance and the fast speed setting value of reference position, produce the high-speed pulse of respective numbers and frequency, the control drive apparatus returns the reference position, has so just accomplished a complete pressure-type process.
Fig. 5 is that the present invention controls heat pressing forming machines at the wiring diagram that presses down process employing torque control model, and the size of torque is controlled by analog quantity input/output module 6-3, and its scope is 0-8V.
Fig. 6 is the pulse diagram that the present invention controls the position control mode of heat pressing forming machines employing, and the command pulse of its input is the form of the train of impulses+symbol of negative logic.。
Fig. 7 is the connected mode of pulse input in Fig. 6 position control mode, adopts open-collector mode in the wiring.Under the position control mode, the speed of its speed is just controlled by the frequency of input pulse.
Fig. 8 is that the present invention controls the switching sequence figure that heat pressing forming machines torque control model converts position control mode into.

Claims (4)

1. method that is used to control optical glass non-spherical surface element hot press shaping machine, this method comprises a covering device, comprising:
Operating terminal (1) is used for feeding device through manual ringing parameter value or executable operations is set;
Display terminal (2) is used for duty and shows and alarm indication;
Alignment sensor (3) is installed on the drive apparatus, is used for the position of induction heat pressing machine operation;
Scrambler (4) is used for the ruuning situation of feedback servo motor;
Servoamplifier (5); Be used to receive the position signalling of the heat pressing forming machines operation that alignment sensor (3) responded to and servomotor run signal that scrambler (4) transmits and be transferred to controller (6); Simultaneously; Servoamplifier (5) carries out computing and produces Control current with other control signal according to the high-speed pulse that controller (6) transmits, through the action of scrambler (4) control servomotor;
Controller (6); Be used to receive the operational order that operating terminal (1) transmits or the parameter of setting; And the position signalling of servomotor run signal that transmits from servoamplifier (5) and heat pressing forming machines operation; Carry out the integrated logic computing, produce high speed command pulse and the control signal of being correlated with and be transferred to servoamplifier (5), the while is in the duty of display terminal (2) display system;
It is characterized in that the method comprising the steps of:
Step 1, after said device electrifying startup and the self check success, controller (6) is judged that according to the RD signal of servoamplifier (5) and ALM signal condition system is whether ready and can be run well, in this way, changes step 2 over to;
Step 2 is set the heat pressing forming machines running parameter through operating terminal (1), comprising: RP setting value 50-100mm; Position of conversion point 100-180mm at a slow speed soon; Maximum position of conversion point 130-200mm, low speed returns buffer distance 0-30mm, fast speed 180-333mm/s; Jogging speed 10-50mm/s, the die mould time 0-100s of 1-4 section and the setting value of pressure 0-3.3T;
Step 3 is carried out original point return and the operation that resets through the button on the operating terminal (1), and at this moment, the heat pressing forming machines initialization is accomplished, and system is in ready state;
Step 4, when the outside provided working signal, said device was received operating instruction, pressed down at a high speed, when pressing down stroke when arriving set speed rate conversion point position, continuation presses down at a slow speed, reaches one section die mould pressure up to system pressure, changes step 5 over to;
Step 5, timing begins, and after first die mould period arrives, the control output quantity of torque will be updated to second section pressure size, and begin second section die mould timing; After second die mould period arrives, the control output quantity of torque will be updated to the 3rd section pressure size, and begin the 3rd section die mould timing; After the 3rd die mould period arrives, the control output quantity of torque will be updated to the 4th section pressure size, and begin the 4th section die mould timing; When the 4th section die mould timing then, change step 6 over to;
Step 6, system switches to position control mode, returns and returns at a high speed through low speed successively, gets back to the reference position.
2. method according to claim 1 is characterized in that: said controller (6) comprises programmable logic controller (PLC) (6-1), high speed counting module (6-2) and analog quantity input/output module (6-3).
3. method according to claim 1 is characterized in that: said scrambler (4) connects servomotor (7).
4. method according to claim 1 is characterized in that: said drive apparatus comprises the guide rail and the main shaft of heat pressing forming machines.
CN2010101056082A 2010-01-20 2010-01-20 Device and method used for controlling optical glass non-spherical surface element hot press shaping machine Expired - Fee Related CN101794137B (en)

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CN104866330A (en) * 2014-02-21 2015-08-26 恩格尔机械(上海)有限公司 Method for supplementing components of forming machine with equipment
CN104259990A (en) * 2014-09-18 2015-01-07 洛阳巨优机床有限公司 Numerical control tapered roller and ball base surface grinder
CN106547246B (en) * 2015-09-18 2019-05-17 中国计量学院 The quick loading control method of electric cylinder pressure high-precision
CN106291787B (en) * 2016-08-31 2018-09-18 成都恒达光学有限公司 A kind of prism processing technology

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Denomination of invention: Device and method used for controlling optical glass non-spherical surface element hot press shaping machine

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