CN201483292U - Safety protection circuit device for machine tool - Google Patents
Safety protection circuit device for machine tool Download PDFInfo
- Publication number
- CN201483292U CN201483292U CN2009201654746U CN200920165474U CN201483292U CN 201483292 U CN201483292 U CN 201483292U CN 2009201654746 U CN2009201654746 U CN 2009201654746U CN 200920165474 U CN200920165474 U CN 200920165474U CN 201483292 U CN201483292 U CN 201483292U
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- circuit
- relay
- control circuit
- chip microprocessor
- microprocessor mcu
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Abstract
The utility model relates to a safety protection circuit device for a machine tool. The device comprises an infrared induction circuit, a control circuit, a motor supply circuit and a single-phase dynamic braking circuit, wherein the motor supply circuit comprises three pairs of contacts KM1 of a first relay which are in serial connection with a three-phase supply circuit; the single-phase dynamic braking circuit comprises the contacts KM2 and KM2-1 of a second relay which are used for forming a braking circuit; and the control circuit comprises a single chip MCU, a motor supply control circuit which is formed by serially connecting a coil KM1 of the first relay and a mono-direction-controlled silicon VS1, and a braking control circuit which is formed by serially connecting the coil KM2 of the second relay and the mono-direction-controlled silicon VS2. The safety protection circuit device for the machine tool has the advantages of simple structure, low failure ratio, convenient installation and debugging, and capacity of effectively preventing an operation accident.
Description
Technical field
The utility model relates to a kind of lathe safety protective circuit device.
Background technology
Bench drill mainly is made of base, column, workbench, head, is used for the workpiece processing of holing.Because drill bit is sharper, the velocity of rotation of drill bit is than very fast, if operating personnel are easy to operating personnel's hand is damaged not according to operational procedure operation or absent minded in process; Particularly to the unskilled new hand of the operation of drilling machine, easier having an accident.
Chinese patent literature ZL03222134.7 discloses a kind of bench drill, and it comprises safety guard.Bench drill comprises link, and link one end is connected on the column, and the other end connects sensor holder, and infrared sensor is arranged in the sensor holder, and the drill bit of infrared sensor and head is oppositely arranged.When human body enters the infrared acquisition district, can realize motor braking rapidly.The weak point of this device is: circuit structure complexity, fault rate are high slightly, install inconvenient.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, fault rate lathe low and easy for installation safety protective circuit device.
For solving the problems of the technologies described above, the utility model provides a kind of lathe safety protective circuit device, comprising: infrared induction circuit, control circuit, motor power supply circuits and single-phase energy-dissipating brake circuit; The motor power supply circuits comprise three couples of contact KM1 of first relay that is series in the three phase supply loop; Single-phase energy-dissipating brake circuit comprises the contact KM2 and the KM2-1 of second relay that is used to form brake circuit; The motor power-supplying circuit that control circuit comprises single-chip microprocessor MCU, be in series by the coil KM1 and the one-way SCR VS1 of first relay, the brake control circuit that is in series by the coil KM2 and the one-way SCR VS2 of second relay; The induced signal input of single-chip microprocessor MCU in the output connection control circuit of infrared induction circuit; The motor power supply control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS1; The braking control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS2.
In the technique scheme, the infrared induction circuit is two reflection infrared sensors; During installation, infrared sensor is contour and be arranged in parallel, and infrared sensor is apart from 200 to 500 millimeters on lathe drill bit, and the spacing of infrared sensor is 40 to 80 millimeters.
In the technique scheme, the infrared induction circuit is three reflection infrared sensors; During installation, infrared sensor is contour and be arranged in parallel, and infrared sensor is apart from 200 to 500 millimeters on lathe drill bit, and the spacing of adjacent infrared sensor is 30 to 50 millimeters.
In the technique scheme, the infrared induction circuit is four reflection infrared sensors; During installation, infrared sensor is contour and be arranged in parallel, and infrared sensor is apart from 200 to 500 millimeters on lathe drill bit, and the spacing of adjacent infrared sensor is 15 to 40 millimeters.
The utlity model has positive effect: when (1) the utility model uses, in case infrared sensor receives infrared signal, promptly trigger one-way SCR VS1 conducting by the single-chip microprocessor MCU in the control circuit, it is electric that the coil KM1 of first relay is got, thereby three couples of contact KM1 of first relay are disconnected; Simultaneously, single-chip microprocessor MCU triggers one-way SCR VS2 conducting, the coil KM2 of second relay is got, thereby make the contact KM2 and the KM2-1 closure of second relay in the single-phase energy-dissipating brake circuit, make 2 phases that connect in the three-phase alternating current in 3 AC terminal of motor M at last, the 3rd AC terminal connecting to neutral line of motor M.Existence because of single-phase energy-dissipating brake circuit; between the stator of motor and rotor, produced a fixed magnetic field; produce induced electromotive force and the electric current opposite in the rotor with former direction; rotor current and fixed magnetic field interact; produce an electromagnetic torque opposite with the rotor direction of rotation; carry out dynamic braking, thereby motor stops operating rapidly, play the safeguard protection effect.(2) when the utility model adopts the scheme of two, three or four infrared sensors, have only when each sensor records infrared ray, just can make control circuit send action command, realize motor braking rapidly.(3) control circuit in the utility model adopts single-chip microprocessor MCU, and simple in structure, fault rate is low, installs, mode is extremely convenient, can prevent the generation of operating accident effectively.(4) lathe of the present utility model can be applicable to lathe of various desk-top or upright drills, punch press etc. with the safety protective circuit device.
Description of drawings
Fig. 1 is the electrical block diagram of lathe of the present utility model with the safety protective circuit device.
The specific embodiment
Embodiment 1
See Fig. 1, the lathe of present embodiment safety protective circuit device comprises: infrared induction circuit 5, control circuit 6, motor power supply circuits 7 and single-phase energy-dissipating brake circuit 8.
Infrared induction circuit 5 comprises 2 reflection infrared sensors, and its spacing is 60 millimeters.During installation, infrared sensor is contour and be arranged in parallel, and infrared sensor is apart from 300 millimeters on lathe drill bit.The induced signal input of single-chip microprocessor MCU in the output of infrared induction circuit 5 (being the output of each infrared sensor) connection control circuit 6; The motor power supply control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS1; The braking control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS2.
The motor power-supplying circuit that control circuit 6 comprises single-chip microprocessor MCU, be in series by the coil KM1 and the one-way SCR VS1 of first relay, the brake control circuit that is in series by the coil KM2 and the one-way SCR VS2 of second relay.
Motor power supply circuits 7 comprise: be series at first relay in the three phase supply loop three couples of contact KM1, be connected on fuse FU and electrothermal relay FR among three alternating current input L1, L2 and the L3.
Single-phase energy-dissipating brake circuit 8 comprises contact KM2, the KM2-1 of second relay that is used to form brake circuit and the diode D that links to each other with zero line.
In case connecing, each infrared sensor in the infrared induction circuit 5 all receives infrared signal simultaneously, promptly trigger one-way SCR VS1 conducting by the single-chip microprocessor MCU in the control circuit, it is electric that the coil KM1 of first relay is got, thereby three couples of contact KM1 of first relay are disconnected; Simultaneously, single-chip microprocessor MCU triggers one-way SCR VS2 conducting, the coil KM2 of second relay is got, thereby make the contact KM2 and the KM2-1 closure of second relay in the single-phase energy-dissipating brake circuit, make 2 in 3 AC terminal of motor M to meet the phase in the three-phase alternating current, the 3rd AC terminal connecting to neutral line N of motor M at last; At last; single-phase energy-dissipating brake circuit makes between the stator of motor and the rotor and has produced a fixed magnetic field; produce induced electromotive force and the electric current opposite in the rotor with former direction; rotor current and fixed magnetic field interact; produce an electromagnetic torque opposite with the rotor direction of rotation; carry out dynamic braking, thereby motor stops operating rapidly, play the safeguard protection effect.
Embodiment 2
On the basis of embodiment 1, present embodiment also can have following distortion: infrared induction circuit 5 is three reflection infrared sensors, and the spacing of adjacent infrared sensor is 40 millimeters.
Embodiment 3
On the basis of embodiment 1, present embodiment also can have following distortion: infrared induction circuit 5 is four reflection infrared sensor IR1 to IR4, and the spacing of adjacent infrared sensor is 30 millimeters.Infrared sensor is many more, and adjacent spacing is tight more, and lathe of the present utility model is just high more with the security reliability of safety protective circuit device.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (1)
1. a lathe safety protective circuit device comprises: infrared induction circuit (5), control circuit (6), motor power supply circuits (7) and single-phase energy-dissipating brake circuit (8); Motor power supply circuits (7) comprise three couples of contact KM1 of first relay that is series in the three phase supply loop; Single-phase energy-dissipating brake circuit (8) comprises the contact KM2 and the KM2-1 of second relay that is used to form brake circuit; It is characterized in that: the motor power-supplying circuit that control circuit (6) comprises single-chip microprocessor MCU, be in series by the coil KM1 and the one-way SCR VS1 of first relay, the brake control circuit that is in series by the coil KM2 and the one-way SCR VS2 of second relay; The induced signal input of single-chip microprocessor MCU in the output connection control circuit (6) of infrared induction circuit (5); The motor power supply control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS1; The braking control output end of single-chip microprocessor MCU connects the control utmost point of described one-way SCR VS2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201654746U CN201483292U (en) | 2009-08-12 | 2009-08-12 | Safety protection circuit device for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201654746U CN201483292U (en) | 2009-08-12 | 2009-08-12 | Safety protection circuit device for machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201483292U true CN201483292U (en) | 2010-05-26 |
Family
ID=42422189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201654746U Expired - Fee Related CN201483292U (en) | 2009-08-12 | 2009-08-12 | Safety protection circuit device for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201483292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576662A (en) * | 2013-11-21 | 2014-02-12 | 柳州职业技术学院 | Machine tool circuit controller based on single chip microcomputer |
| CN107313370A (en) * | 2017-07-05 | 2017-11-03 | 长治清华机械厂 | Safety stop lever with microwave sounding |
-
2009
- 2009-08-12 CN CN2009201654746U patent/CN201483292U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576662A (en) * | 2013-11-21 | 2014-02-12 | 柳州职业技术学院 | Machine tool circuit controller based on single chip microcomputer |
| CN107313370A (en) * | 2017-07-05 | 2017-11-03 | 长治清华机械厂 | Safety stop lever with microwave sounding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Newmat Nano Material Technology Co., Ltd. Assignor: Wang Xiaoli Contract record no.: 2011990000952 Denomination of utility model: Safety protecting circuit device of locomotive Granted publication date: 20100526 License type: Exclusive License Record date: 20110929 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20120812 |