CN203817880U - Variable frequency and speed regulation lathe - Google Patents
Variable frequency and speed regulation lathe Download PDFInfo
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- CN203817880U CN203817880U CN201420183026.XU CN201420183026U CN203817880U CN 203817880 U CN203817880 U CN 203817880U CN 201420183026 U CN201420183026 U CN 201420183026U CN 203817880 U CN203817880 U CN 203817880U
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- 238000004134 energy conservation Methods 0.000 description 2
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Abstract
The utility model relates to a variable frequency and speed regulation lathe. The lathe control system comprises a main motor which is controlled by a frequency converter; the forward rotation signal port and the reverse rotation signal port of the frequency converter are connected with a digital ground port respectively through a first normally open contact of a first relay and a first normally open contact of a second relay via a first normally open contact of a third relay; a control power supply can supply electricity for closing coils of the first relay, the second relay and the third relay through three sub-circuits; ground wires of a velocity measurement photoelectric switch in a instrument display and control circuit and signal wires of an X-axis grating ruler and a Z-axis grating ruler are accessed to a digital display meter; the analog quantity output end of the digital display meter is connected with the analog quantity input end of the frequency converter; a common ground end of the digital display meter is connected with the analog quantity ground end of the frequency converter; a gear signal port of the digital display meter is connected with a common ground end of the digital display meter through a gear detection switch. The digital display meter can figure out the required rotation speed according to the Z-coordinate and the gear signal and then send the rotation speed signal to the frequency converter, so that an automatic adjustment of the rotation speed of the main motor can be realized.
Description
Technical field
The utility model relates to a kind of frequency control lathe, belongs to lathe technical field.
Background technology
The control system of existing lathe comprises main circuit B, instrument presentation controller circuit C and control circuit D, and 380V power supply provides 220V power supply by transformer TC to instrument presentation controller circuit C, to control circuit D, provides 24V power supply.
Main circuit B comprises frequency converter A 2 and by the main motor M 1 of Frequency Converter Control, the forward signal port FWD of frequency converter is connected with port DCM digitally by the first normally open contact 1-1 of the first relay and the first normally open contact 3-1 of the 3rd relay, and the reverse signal port REV of frequency converter is connected with port DCM digitally by the first normally open contact 2-1 of the second relay and the first normally open contact 3-1 of the 3rd relay; The brake port of frequency converter A 2 is connected with braking resistor R, holds ACM to be connected to the analog quantity of the 10V power supply of frequency converter by speed-regulating potentiometer and frequency converter, and the adjustable side of speed-regulating potentiometer is connected with the analog input end AVI of frequency converter.
Instrument presentation controller circuit C comprises digital display meter A1, the optoelectronic switch SQ3 that tests the speed, X-axis grating scale LX and Z axis grating scale LZ, the X coordinate input of the holding wire access digital display meter A1 of X-axis grating scale LX, the Z coordinate input of the holding wire access digital display meter A1 of Z axis grating scale LZ; The 12V power output S1 of digital display meter A1 provides power supply to the power input of the optoelectronic switch SQ3 that tests the speed, the test the speed ground wire of optoelectronic switch SQ3 and the common S5 of digital display meter A1 is connected, and the signal output part of the optoelectronic switch SQ3 that tests the speed is connected with the step-by-step counting mouth S3 of digital display meter A1.
Control circuit D comprises the first microswitch SQ1, the second microswitch SQ2, the first relay 1, the second relay 2 and the 3rd relay 3, between the live wire of control power supply and zero line, be provided with three branch roads, the first branch road is that the normally opened contact SQ1-2 of the first microswitch connects with the coil of the first relay 1; The second branch road is that the normally-closed contact SQ1-1 of the first microswitch connects with the normally opened contact SQ2-2 of the second microswitch and the coil of the second relay 2 successively; The 3rd branch road is in parallel with the second normally opened contact 3-2 of the 3rd relay again after the normally-closed contact SQ1-1 of the first microswitch and the normally-closed contact SQ2-1 of the second microswitch connect, then connects with the coil of the 3rd relay 3.
Lathe is when stop position, the normally-closed contact SQ2-1 path of the normally-closed contact SQ1-1 of the first microswitch and the second microswitch, the coil of the 3rd relay 3 obtains the second normally opened contact 3-2 self-insurance of electric suction merga pass the 3rd relay, and in main circuit A, the first normally opened contact 3-1 closure of the 3rd relay is that main motor M 1 rotating is ready.
Only press the first microswitch SQ1, the normally opened contact SQ1-2 of the first microswitch is closed, the normally-closed contact SQ1-1 of the first microswitch disconnects, the coil of the first relay 1 obtains electric, the first normally open contact 1-1 of the first relay is closed, the forward signal port FWD of frequency converter A 2 and digitally port DCM connection, main motor M 1 forward.
Only press the second microswitch SQ2, the normally opened contact SQ2-2 of the second microswitch is closed, the normally-closed contact SQ2-1 of the second microswitch disconnects, the coil of the second relay 2 obtains electric, the first normally open contact 2-1 of the second relay is closed, the reverse signal port REV of frequency converter A 2 is communicated with port DCM digitally, main motor M 1 reversion.
The Z coordinate that the main shaft actual speed signal that the optoelectronic switch that tests the speed provides, the X coordinate that X-axis grating scale provides and Z axis grating scale provide shows on digital display meter, operator can change according to Z coordinate manual rotation speed-regulating potentiometer the rotating speed of main motor M 1, while discharging the first microswitch SQ1 or the second microswitch SQ2, lathe stops, the energy that frequency converter A 2 discharges main motor M 1 by braking resistor R, realizes electric braking.
There is following weak point in above system: 1. main motor speed only depends on and visually observes the Z coordinate that digital display meter shows, manually adjusts speed-regulating potentiometer, and in operation process, the speed of mainshaft can not change automatically with lathe Z axis coordinate.
2. there is no cooperative mechanical shift speed change, only rely on the electrical variable speed of frequency converter, during lathe low speed, power is little, and mechanical property is very poor.
3. there is no cooperative mechanical brake, only rely on the electric braking of frequency converter, machine safety poor-performing, as in emergency circumstances given lathe power-off, frequency converter power-off not working machine main shaft without safety arrestment.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of frequency control lathe is provided, and the speed governing of frequency converter is changed into by digital display meter and automatically being controlled by manual control.
For solving above technical problem, a kind of frequency control lathe of the present utility model, comprise lathe control system, described lathe control system comprises main circuit, instrument presentation controller circuit and control circuit, described instrument presentation controller circuit comprises digital display meter, the optoelectronic switch that tests the speed, X-axis grating scale and Z axis grating scale, the holding wire of described X-axis grating scale accesses the X coordinate input of described digital display meter, and the holding wire of described Z axis grating scale accesses the Z coordinate input of described digital display meter; The 12V power output of described digital display meter provides power supply to the power input of the described optoelectronic switch that tests the speed, the ground wire of the described optoelectronic switch that tests the speed is connected with the common of described digital display meter, described in the test the speed signal output part of optoelectronic switch and the step-by-step counting mouth of described digital display meter be connected; Described control circuit comprises the first microswitch, the second microswitch, the first relay, the second relay and the 3rd relay, between the live wire of control power supply and zero line, be provided with three branch roads, the first branch road is that the normally opened contact of the first microswitch is connected with the coil of the first relay; The second branch road is that the normally-closed contact of the first microswitch is connected with the normally opened contact of the second microswitch and the coil of the second relay successively; The 3rd branch road is in parallel with the second normally opened contact of the 3rd relay again after the normally-closed contact of the first microswitch is connected with the normally-closed contact of the second microswitch, then connects with the coil of the 3rd relay; Described main circuit comprises frequency converter and by the main motor of Frequency Converter Control, first normally open contact of the forward signal port of described frequency converter by the first relay and the first normally open contact of the 3rd relay are connected with port digitally, and the reverse signal port of described frequency converter is connected with described digitally port by the first normally open contact of the second relay and the first normally open contact of the 3rd relay; The analog output end of described digital display meter is connected with the analog input end of described frequency converter, and the common of described digital display meter is connected with the analog quantity of described frequency converter ground end; The gear signal mouth of described digital display meter is connected with the common of described digital display meter by gear sense switch.
With respect to prior art, the utility model has been obtained following beneficial effect: the Z coordinate that digital display meter provides according to Z axis grating scale, the gear signal providing in conjunction with gear sense switch, calculate the required speed of mainshaft and tach signal is delivered to the analog input end of frequency converter, thereby realize the automatic adjusting to main motor speed, can reach permanent linear speed function.
As improvement of the present utility model, in described control circuit, between the live wire of control power supply and zero line, be provided with the 4th branch road and the 5th branch road, the coil that the 4th branch road is the time relay is directly connected between the live wire and zero line of controlling power supply; The time delay normally-closed contact that the 5th branch road is the described time relay with after diodes in parallel, connect with rectifier bridge, described rectifier bridge is to the main shaft dish coil power supply of stopping.Adopt mechanical brake to coordinate the braking resistor braking of frequency converter, lathe when "on" position, main shaft stop dish coil all the time electric maintain to stop coil in releasing orientation; Through time relay time delay, after several seconds, the normally-closed contact of the time relay disconnects, and the dish coil of stopping keeps through the adhesive of rectifier halfwave rectifier by diode, and to reduce coil heating and energy-conservation, the dish of stopping is in open mode, and main shaft can rotate; Once lathe is met the emergency power-off of operating a switch, the main shaft dish coil losing electricity of stopping, the dish reset locking main shaft of stopping.
As preferred version of the present utility model, described digital display meter is KN30V type digital display meter or GS9DPA type digital display meter.
As preferred version of the present utility model, described frequency converter is Delta VFD055B43A type frequency converter.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the control system electric diagram of the utility model frequency control lathe.
In figure: B. main circuit; C. instrument presentation controller circuit; D. control circuit; SA0. power switch; QM1. breaker; A2. frequency converter; R. braking resistor; M1. main motor; TC. transformer; A1. digital display meter; LX.X axle grating scale; LZ.Z axle grating scale; SQ1. the first microswitch; SQ2. the second microswitch; SQ3. optoelectronic switch tests the speed; SQ4. gear sense switch; SB0. emergency stop switch; T. the time relay; V. diode; VC. rectifier bridge; YB. the main shaft dish coil of stopping; 1. the first relay; 2. the second relay; 3. the 3rd relay.
The specific embodiment
As shown in Figure 1, the utility model frequency control lathe, comprises lathe control system, and lathe control system comprises main circuit B, instrument presentation controller circuit C and control circuit D.380V power supply is powered to frequency converter A 2 by power switch SA0 and circuit breaker Q M1, then to instrument presentation controller circuit C, provides 220V power supply by transformer TC, to control circuit D, provides 24V power supply.
Main circuit B comprises frequency converter A 2 and by the main motor M 1 of Frequency Converter Control, the forward signal port FWD of frequency converter is connected with port DCM digitally by the first normally open contact 1-1 of the first relay and the first normally open contact 3-1 of the 3rd relay, and the reverse signal port REV of frequency converter is connected with port DCM digitally by the first normally open contact 2-1 of the second relay and the first normally open contact 3-1 of the 3rd relay; The analog output end S7 of digital display meter A1 is connected with the analog input end AVI of frequency converter, and the common S5 of digital display meter A1 is connected with the analog quantity of frequency converter ground end ACM; The gear signal mouth S4 of digital display meter A1 is connected with the common S5 of digital display meter A1 by gear sense switch SQ4.The brake port of frequency converter A 2 is connected with braking resistor R, holds ACM to be connected to the analog quantity of the 10V power supply of frequency converter by speed-regulating potentiometer and frequency converter, and the adjustable side of speed-regulating potentiometer is connected with the analog input end AVI of frequency converter.
Instrument presentation controller circuit C comprises digital display meter A1, the optoelectronic switch SQ3 that tests the speed, X-axis grating scale LX and Z axis grating scale LZ, the X coordinate input of the holding wire access digital display meter A1 of X-axis grating scale LX, the Z coordinate input of the holding wire access digital display meter A1 of Z axis grating scale LZ; The 12V power output S1 of digital display meter A1 provides power supply to the power input of the optoelectronic switch SQ3 that tests the speed, the test the speed ground wire of optoelectronic switch SQ3 and the common S5 of digital display meter A1 is connected, and the signal output part of the optoelectronic switch SQ3 that tests the speed is connected with the step-by-step counting mouth S3 of digital display meter A1;
Control circuit D comprises emergency stop switch SB0, the first microswitch SQ1, the second microswitch SQ2, the first relay 1, the second relay 2 and the 3rd relay 3, emergency stop switch SB0 is serially connected on the live wire of controlling power supply, between the live wire of control power supply and zero line, be provided with five branch roads, the first branch road is that the normally opened contact SQ1-2 of the first microswitch connects with the coil of the first relay 1; The second branch road is that the normally-closed contact SQ1-1 of the first microswitch connects with the normally opened contact SQ2-2 of the second microswitch and the coil of the second relay 2 successively; The 3rd branch road is in parallel with the second normally opened contact 3-2 of the 3rd relay again after the normally-closed contact SQ1-1 of the first microswitch and the normally-closed contact SQ2-1 of the second microswitch connect, then connects with the coil of the 3rd relay 3; The 4th branch road is that the coil of time relay T is directly connected between the live wire and zero line of controlling power supply; The time delay normally-closed contact T-1 that the 5th branch road is the time relay connects with rectifier bridge VC with after diode V parallel connection, and rectifier bridge VC stops and coils coil YB power supply to main shaft.
Lathe is when stop position, the normally-closed contact SQ2-1 path of the normally-closed contact SQ1-1 of the first microswitch and the second microswitch, the coil of the 3rd relay 3 obtains the second normally opened contact 3-2 self-insurance of electric suction merga pass the 3rd relay, and in main circuit A, the first normally opened contact 3-1 closure of the 3rd relay is that main motor M 1 rotating is ready.
Only press the first microswitch SQ1, the normally opened contact SQ1-2 of the first microswitch is closed, the normally-closed contact SQ1-1 of the first microswitch disconnects, the coil of the first relay 1 obtains electric, the first normally open contact 1-1 of the first relay is closed, the forward signal port FWD of frequency converter A 2 and digitally port DCM connection, main motor M 1 forward.
Only press the second microswitch SQ2, the normally opened contact SQ2-2 of the second microswitch is closed, the normally-closed contact SQ2-1 of the second microswitch disconnects, the coil of the second relay 2 obtains electric, the first normally open contact 2-1 of the second relay is closed, the reverse signal port REV of frequency converter A 2 is communicated with port DCM digitally, main motor M 1 reversion.
The Z coordinate that the X coordinate that the main shaft actual speed signal that the optoelectronic switch SQ3 that tests the speed provides, X-axis grating scale LX provide and Z axis grating scale LZ provide shows on digital display meter A1.The Z coordinate that digital display meter A1 provides according to Z axis grating scale, the gear signal providing in conjunction with gear sense switch SQ4, calculate the required speed of mainshaft and tach signal is delivered to the analog input end AVI of frequency converter A 2, thereby realize the automatic adjusting to main motor speed, can reach permanent linear speed function.
Lathe when "on" position, main shaft stop dish coil YB all the time electric maintain to stop coil in releasing orientation; Through time relay T time delay after several seconds, the normally-closed contact T-1 of the time relay disconnects, and the main shaft dish coil YB that stops keeps through the adhesive of rectifier VC halfwave rectifier by diode V, and to reduce coil heating and energy-conservation, the dish of stopping is in open mode, and main shaft can rotate.While discharging the first microswitch SQ1 or the second microswitch SQ2, lathe stops, and the energy that frequency converter A 2 discharges main motor M 1 by braking resistor R, realizes electric braking.The power-off once lathe chance emergency is operated a switch, main shaft is stopped and is coiled coil YB dead electricity, the dish reset locking main shaft of stopping.
Digital display meter can be selected the KN30V type digital display meter of Dima Digital Machine's production or the GS9DPA type digital display meter that Zhongke Hengye Zhongzi Tech. Co., Ltd., Beijing produces, and frequency converter can be selected Delta VFD055B43A type frequency converter.
These are only the better possible embodiments of the utility model, non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.
Claims (4)
1. a frequency control lathe, comprise lathe control system, described lathe control system comprises main circuit (B), instrument presentation controller circuit (C) and control circuit (D), described instrument presentation controller circuit (C) comprises digital display meter (A1), the optoelectronic switch that tests the speed (SQ3), X-axis grating scale (LX) and Z axis grating scale (LZ), the holding wire of described X-axis grating scale (LX) accesses the X coordinate input of described digital display meter (A1), and the holding wire of described Z axis grating scale (LZ) accesses the Z coordinate input of described digital display meter (A1); The 12V power output (S1) of described digital display meter (A1) provides power supply to the power input of the described optoelectronic switch that tests the speed (SQ3), the ground wire of the described optoelectronic switch that tests the speed (SQ3) is connected with the common (S5) of described digital display meter (A1), described in the test the speed signal output part of optoelectronic switch (SQ3) and the step-by-step counting mouth (S3) of described digital display meter (A1) be connected;
Described control circuit (D) comprises the first microswitch (SQ1), the second microswitch (SQ2), the first relay (1), the second relay (2) and the 3rd relay (3), between the live wire of control power supply and zero line, be provided with three branch roads, the first branch road is that the normally opened contact (SQ1-2) of the first microswitch is connected with the coil of the first relay (1); The second branch road is that the normally-closed contact (SQ1-1) of the first microswitch is connected with the normally opened contact (SQ2-2) of the second microswitch and the coil of the second relay (2) successively; The 3rd branch road is in parallel with second normally opened contact (3-2) of the 3rd relay again after the normally-closed contact (SQ1-1) of the first microswitch and the normally-closed contact (SQ2-1) of the second microswitch are connected, then connects with the coil of the 3rd relay (3);
Described main circuit (B) comprises frequency converter (A2) and by the main motor (M1) of Frequency Converter Control, the forward signal port (FWD) of described frequency converter is connected with port (DCM) digitally by first normally open contact (1-1) of the first relay and first normally open contact (3-1) of the 3rd relay, and the reverse signal port (REV) of described frequency converter passes through first normally open contact (2-1) of the second relay and first normally open contact (3-1) of the 3rd relay is connected with described digitally port (DCM);
It is characterized in that: the analog output end (S7) of described digital display meter (A1) is connected with the analog input end (AVI) of described frequency converter, the common (S5) of described digital display meter (A1) is connected with the analog quantity of described frequency converter ground end (ACM); The gear signal mouth (S4) of described digital display meter (A1) is connected with the common (S5) of described digital display meter (A1) by gear sense switch (SQ4).
2. frequency control lathe according to claim 1, it is characterized in that: in described control circuit (D), between the live wire of control power supply and zero line, be provided with the 4th branch road and the 5th branch road, the 4th branch road is that the coil of the time relay (T) is directly connected between the live wire and zero line of controlling power supply; After the time delay normally-closed contact (T-1) that the 5th branch road is the described time relay is in parallel with diode (V), connect with rectifier bridge (VC), described rectifier bridge (VC) is stopped and is coiled coil (YB) power supply to main shaft.
3. frequency control lathe according to claim 1, is characterized in that: described digital display meter is KN30V type digital display meter or GS9DPA type digital display meter.
4. frequency control lathe according to claim 1, is characterized in that: described frequency converter is Delta VFD055B43A type frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183026.XU CN203817880U (en) | 2014-04-16 | 2014-04-16 | Variable frequency and speed regulation lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183026.XU CN203817880U (en) | 2014-04-16 | 2014-04-16 | Variable frequency and speed regulation lathe |
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| Publication Number | Publication Date |
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| CN203817880U true CN203817880U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420183026.XU Expired - Lifetime CN203817880U (en) | 2014-04-16 | 2014-04-16 | Variable frequency and speed regulation lathe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269823A (en) * | 2017-08-02 | 2017-10-20 | 临汾鹏泰伟业有限公司 | A kind of casting finishing machine change-speed gearing structure |
| CN109632298A (en) * | 2018-12-25 | 2019-04-16 | 人本集团有限公司 | Clutch bearing adds unloading test system |
| CN109925021A (en) * | 2017-12-19 | 2019-06-25 | 西南医科大学附属中医医院 | A kind of protectiveness orthopaedic drill |
-
2014
- 2014-04-16 CN CN201420183026.XU patent/CN203817880U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269823A (en) * | 2017-08-02 | 2017-10-20 | 临汾鹏泰伟业有限公司 | A kind of casting finishing machine change-speed gearing structure |
| CN109925021A (en) * | 2017-12-19 | 2019-06-25 | 西南医科大学附属中医医院 | A kind of protectiveness orthopaedic drill |
| CN109632298A (en) * | 2018-12-25 | 2019-04-16 | 人本集团有限公司 | Clutch bearing adds unloading test system |
| CN109632298B (en) * | 2018-12-25 | 2021-11-16 | 人本股份有限公司 | Loading and unloading test system for clutch bearing |
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Granted publication date: 20140910 |