CN201164952Y - Rapid electromagnetic band brake power-off protection apparatus - Google Patents
Rapid electromagnetic band brake power-off protection apparatus Download PDFInfo
- Publication number
- CN201164952Y CN201164952Y CNU2007201759433U CN200720175943U CN201164952Y CN 201164952 Y CN201164952 Y CN 201164952Y CN U2007201759433 U CNU2007201759433 U CN U2007201759433U CN 200720175943 U CN200720175943 U CN 200720175943U CN 201164952 Y CN201164952 Y CN 201164952Y
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- signal
- module
- protective device
- electromagnetic brake
- brachium pontis
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Abstract
The utility model discloses a power cut protective device based on rapid electromagnetic internal contracting brake aiming at providing a power cut protective device, making a numerical control machine timely control the operation of a servo driver to an internal contracting brake electromagnet through the real time monitoring to a power network in state of sudden power cut of a servo motor, so that the internal contracting brake electromagnet can avoid moving parts from moving along the gravitational direction. The power cut protective device includes an outside interface module, a power isolation and sampling interface module, a signal processing module, an upper half bridge arm and a rapid release module, a lower half bridge arm and a rapid release module, etc. The power cut protective device is mainly used to control the internal contracting brake electromagnet and reduce the accidental downshift along the gravitational direction of the moving parts to the minimum in state of sudden power cut so as to protect machine tool cutters and machined work pieces from being damaged.
Description
Technical field:
The utility model belongs to power-off protection apparatus; particularly relate to a kind of under the unexpected powering-off state of servomotor; Digit Control Machine Tool is controlled the action of servo-driver to the band-type brake electromagnet by the result to the real-time power network monitoring in good time, thereby keeps away the power-off protection apparatus that moving component moves along gravity direction.
Background technology:
The parts that Digit Control Machine Tool moves along gravity direction (as the Z axle of planer-type milling machine) have servomotor to drag more.Generally, in order to prevent that moving component after the motor dead electricity from causing because of gravity moves down that machine tool damages, adverse consequences such as processing work is destroyed, machine tool accuracy loss, such lathe has counter weight device more or at motor shaft end the band-type brake electromagnet apparatus is housed.But above-mentioned solution some problems can occur in implementation process: the one, and, owing to be subjected to the restriction of the factor of structure, the quick individual features of moving-member etc., some lathe can't be with counter weight device; The 2nd,, though in most of the cases can carry out in good time control action to the band-type brake electromagnet by servo-driver, finish the band-type brake task smoothly, but, under the situation of outage suddenly, servo-driver is not prompt enough to the control action of band-type brake electromagnet, still can cause along the accident of gravity direction moving component to move down, and then cause serious consequence.
Summary of the invention:
Technical problem to be solved in the utility model is the shortcoming that overcomes prior art; provide a kind of under the unexpected powering-off state of servomotor; Digit Control Machine Tool is controlled the action of servo-driver to the band-type brake electromagnet by the result to the real-time power network monitoring in good time, thereby keeps away the power-off protection apparatus that moving component moves along gravity direction.
The technical solution of the utility model is summarized as follows:
A kind of based on quick electromagnetic brake-contracting cut-off protective device, it is characterized in that isolating sampling interface module A2, signal processing module A3, first brachium pontis and the modules A 4 of releasing fast, second brachium pontis and the modules A 5 of releasing fast etc. by external interface module A1, electrical network forms.Wherein, the signal of external power grid enters electrical network and isolates sampling interface A2 through external interface module A1; The processing that electrical network is isolated the signal process signal processing module A3 after the sampling produces control signal, and control signal is delivered to first brachium pontis and the A4 module of releasing fast respectively, second brachium pontis and the A5 module of releasing fast.Through the signal after up and down the half-bridge arm amplifies with release fast after signal send into external interface again.
For guarantee to power on, down during electricity, the band-type brake electromagnet can both precision maneuver, the utility model adopts the half-bridge driven mode.Band-type brake electromagnet winding is connected across between the upper and lower bridge arm.Because the band-type brake electromagnet is an inductive load, when closing the band-type brake electromagnet, if there is not continuous current circuit, will produce big induced potential.Induced potential can outwards send with the electromagnetic wave form, produces to disturb.If continuous current circuit is arranged, electric current can be moving at electromagnet inner counter resurgent, causes electromagnet fully in time to close and band-type brake.In order neither produce to disturb, allow again electromagnet is quick and complete closes, the utility model has adopted quick bleed-off circuit.
Electrical network is isolated the isolation sampling that the sampling interface is mainly used in the high-voltage large current signal of realizing external power grid, simultaneously the voltage and the power supply continuity of electrical network is sampled, so that accurately in real time the band-type brake electromagnet is implemented control.
The beneficial effects of the utility model are: under the situation of outage suddenly, can make the accident amount of moving down of gravity direction moving component reduce to enough little in time to the band-type brake magnet control, thereby guarantee that machine tool does not damage, processing work is not destroyed.
Description of drawings:
Fig. 1 is a general structure schematic diagram of the present utility model;
Fig. 2 is that electrical network of the present utility model is isolated sampling interface schematic diagram;
Fig. 3 is a signal processing block schematic diagram of the present utility model;
Fig. 4 is first brachium pontis of the present utility model and the module diagram of releasing fast;
Fig. 5 is second brachium pontis of the present utility model and the module diagram of releasing fast;
Fig. 6 is an external interface module schematic diagram of the present utility model.
The specific embodiment:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
Fig. 1 has shown structure composition of the present utility model, and wherein, the signal of external power grid enters electrical network and isolates sampling interface A2 through external interface module A1; The processing that electrical network is isolated the signal process signal processing module A3 after the sampling produces control signal, and control signal is delivered to first brachium pontis and the A4 module of releasing fast respectively, second brachium pontis and the A5 module of releasing fast.Through the signal after up and down the half-bridge arm amplifies with release fast after signal send into external interface again.
Among Fig. 2, the major function that electrical network is isolated the sampling interface is to realize the isolation sampling of the high-voltage large current signal of external power grid, simultaneously the voltage and the power supply continuity of electrical network is sampled.U1, U2 realize the photoelectricity isolation, and isolation voltage is greater than 2500 volts, and R3 provides protection to U1, U2.Suitably choose the resistance value of R1, R2, in the time of then can be to network voltage detection, can also sample to power supply continuity, AC1, AC2 are the input ports of external power grid, and IN1, IN2 isolate sampled signal.R4, R15, R5, R16 suitably setover to signal.
Among Fig. 3, the signal that the signal processing block is returned to sampling carries out oppositely, Schmidt's shaping, deration of signal expansion.The circuit that U6, C30, C13 form to carrying out Schmidt's shaping between the voltage of 1/3*VCC-2/3*VCC, makes the waveform regularization to the signals reverse of sampling back the time.By the circuit that C1, C2, D1, U3, R6, R7 form the deration of signal is expanded.C13 extracts the signal trailing edge in the circuit, and the width that the time constant decision signal of R6, C1 is expanded, the D1 high-pressure section after to the voltage translation ends, and R7 control is only expanded the signal trailing edge.C2 establishes for stablizing U3 work.CONGROL1, CONTROL2 two paths of signals then can drive second brachium pontis.If the voltage of external power grid is enough high, the signal of isolating after sampling is full, cross between the 1/3*VCC-2/3*VCC voltage, but signal Schmidt shaping and width are expanded, and stop if the voltage of external power grid is not high enough or power supply is temporary transient, and the signal amplitude after the isolation sampling is not enough, can not cross between the 1/3*VCC-2/3*VCC voltage, signal then can not shaping and width expand, can cause second brachium pontis of quick band-type brake to be closed, the back of releasing fast produces the band-type brake action.In the moment of cutting off the power supply suddenly, start band-type brake fast like this.
Among Fig. 4, first brachium pontis is made up of K1, K2, D8, D9, D11, LED0, LED3 with releasing fast, and the control signal of K1, K2 comes from servo-driver (quick band-type brake module can be controlled the two-way band-type brake).D8, D9 are the small-signal afterflow, and LED0, LED3 are the indicator lamp of light emitting diode.D11 is as quick leakage path.Because K1, K2 are long actuation time, also corresponding length of the time of releasing fast.
The band-type brake module is provided with the indicator lamp of three green LEDs fast.
The bright expression of LD1: brake loop is connected, and the band-type brake coil is because of getting electric declutching, and rotor can normal rotation.
The LD1 expression of going out: brake loop is closed, and the band-type brake coil is because of the dead electricity band-type brake, and rotor rotates and is obstructed.
The bright expression of LD2, LD3: the band-type brake control signal on first, second road (being produced by driver) is delivered to.
LD2, the LD3 expression of going out: the band-type brake control signal on first, second road is not delivered to.
Among Fig. 5, second brachium pontis is made up of D5, D6, D7, R10, R11, R13, R14, Q1, C15, LD1 with releasing fast, D7, R13, R14 constitute quick leakage path, Q1 is as second brachium pontis, the switching speed of R11 restriction Q1, in order to avoid the too fast noise that causes of switch, R10, C15 carry out smoothly signal.D5, D6 are the stack input control of signal.
External interface among Fig. 6: the band-type brake module is provided with 12 binding posts fast.Each terminal is defined as follows:
1: the band-type brake control signal of the first via (producing) anode by driver;
2: the band-type brake control signal negative terminal of the first via;
3: the second tunnel band-type brake control signal anode;
4: the second tunnel band-type brake control signal negative terminal;
5: first via band-type brake coil negative terminal;
6: the second road band-type brake coil negative terminal;
7: first via band-type brake coil anode;
8: the second road band-type brake coil anode;
9: band-type brake power supply ground;
10: the positive 24V of band-type brake power supply;
11: alternating current 220V input 1;
12: alternating current 220V input 2.
Claims (10)
1. quick electromagnetic brake-contracting cut-off protective device, it is characterized in that it isolates sampling interface module (A2), signal processing module (A3), first brachium pontis by external interface module (A1), electrical network and the module (A4) of releasing fast, second brachium pontis are formed with the module (A5) of releasing fast; Wherein, the signal of external power grid enters electrical network and isolates sampling interface (A2) through external interface module (A1); Signal after the electrical network isolation sampling produces control signal through the processing of signal processing module (A3), and control signal is delivered to first brachium pontis respectively and released (A4) module fast, second brachium pontis and (A5) module of releasing fast; Through the signal after up and down the half-bridge arm amplifies with release fast after signal send into external interface again.
2. quick electromagnetic brake-contracting cut-off protective device according to claim 1 is characterized in that, it adopts the half-bridge driven mode, and band-type brake electromagnet winding is connected across between the upper and lower bridge arm.
3. quick electromagnetic brake-contracting cut-off protective device according to claim 1 is characterized in that it has adopted quick bleed-off circuit.
4. according to claim 1 or 2 or 3 described quick electromagnetic brake-contracting cut-off protective devices, it is characterized in that, described electrical network is isolated the sampling interface by isolation voltage U1, U2, resistance R 1, R2, R3, R4, R5, R15, R16, external power grid input AC1, AC2 isolate sampled signal IN1, IN2 and form; Wherein, the isolation voltage of U1, U2 is greater than 2500 volts.
5. according to claim 1 or 2 or 3 described quick electromagnetic brake-contracting cut-off protective devices, it is characterized in that described signal processing module is expanded circuit by a schmidt shaping circuit and a deration of signal and formed.
6. quick electromagnetic brake-contracting cut-off protective device according to claim 5 is characterized in that described schmidt shaping circuit is made up of chip U6, capacitor C 30 and C13.
7. quick electromagnetic brake-contracting cut-off protective device according to claim 5 is characterized in that, the described deration of signal is expanded circuit and is made up of capacitor C 1 and C2, diode D1, chip U3, resistance R 6 and R7.
8. quick electromagnetic brake-contracting cut-off protective device according to claim 5, it is characterized in that, capacitor C 13 is extracted the signal trailing edge in the described signal processing module circuit, the width that the time constant decision signal of resistance R 6, capacitor C 1 is expanded, the high-pressure section of diode D1 after to the voltage translation ends, and resistance R 7 controls are only expanded the signal trailing edge; Capacitor C 2 is established for stablizing chip U3 work; Signal CONGROL1, signal CONTROL2 then can drive second brachium pontis.
9. according to claim 1 or 2 or 3 described quick electromagnetic brake-contracting cut-off protective devices, it is characterized in that described first brachium pontis is made up of relay K 1 and K2, diode D8, D9 and D11, LED 0 and LED3 with the module of releasing fast; Wherein, the control signal of K1, K2 comes from servo-driver; D8, D9 are the small-signal afterflow; LED0, LED3 are the indicator lamp of light emitting diode; D11 is quick leakage path; The band-type brake module is provided with the indicator lamp of three green LEDs fast.
10. according to claim 1 or 2 or 3 described quick electromagnetic brake-contracting cut-off protective devices, it is characterized in that described second brachium pontis is made up of diode D5, D6 and D7, resistance R 10, R11, R13 and R14, power tube Q1, capacitor C 15, light emitting diode LD1 with the module of releasing fast; Wherein, D7, R13, R14 constitute quick leakage path, and Q1 is second brachium pontis, the switching speed of R11 restriction Q1, in order to avoid the too fast noise that causes of switch, R10, C15 carry out smoothly signal; D5, D6 are the stack input control of signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201759433U CN201164952Y (en) | 2007-09-13 | 2007-09-13 | Rapid electromagnetic band brake power-off protection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201759433U CN201164952Y (en) | 2007-09-13 | 2007-09-13 | Rapid electromagnetic band brake power-off protection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201164952Y true CN201164952Y (en) | 2008-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201759433U Expired - Lifetime CN201164952Y (en) | 2007-09-13 | 2007-09-13 | Rapid electromagnetic band brake power-off protection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201164952Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785916A (en) * | 2014-12-15 | 2016-07-20 | 上海通用汽车有限公司 | Method and apparatus for protecting gravity shaft dropping of machine tool |
-
2007
- 2007-09-13 CN CNU2007201759433U patent/CN201164952Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785916A (en) * | 2014-12-15 | 2016-07-20 | 上海通用汽车有限公司 | Method and apparatus for protecting gravity shaft dropping of machine tool |
| CN105785916B (en) * | 2014-12-15 | 2019-01-18 | 上海通用汽车有限公司 | The method and apparatus of lathe gravity axis tenesmus protection are provided |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |