A kind of PLC main control loop that is used for computerized numerical control sawing machine
Technical field
The present invention relates to a kind of control loop, particularly relate to a kind of PLC main control loop that is used for computerized numerical control sawing machine.
Background technology
Cutting machine is people's cutter sweeps commonly used when blocking or cutting off all kinds of workpiece, and existing cutting machine is divided into hand-held cutting machine and table saw substantially.Hand-held cutting machine volume is less, has a housing usually, is provided with parts such as motor in the housing, is provided with the grinding wheel as cutting tool in housing one side, and grinding wheel is moving in the driving downward modulation turn over of motor, is used for cut workpiece.The hand-held cutting machine also has a handshake part, during use, grasps the handshake part and carries out cutting operation.
The employed grinding wheel diameter of hand-held cutting machine is less, and general diameter is 100 millimeters to 200 millimeters, because the hand-held cutting machine is by user's hand-held, randomness is bigger, in case careless manipulation is easy to cause grinding wheel to break, causes personal injury.And during owing to cut workpiece, workpiece is bigger to the reaction force of hand-held cutting machine; Often need both hands to hold with a firm grip and carry out operation, need to use other clamping workpiece with piece-holder to be cut, or need other people that workpiece to be cut is held with a firm grip; This all makes troubles to operation, in addition, and different users's operating habit, qualification difference; Also cause the stability of operation there are differences, cut quality is unstable.The table saw volume is relatively large; It has a support; Support is provided with the piece-holder assembly that is used for the clamping workpiece, and through by motor-driven grinding wheel workpiece to be processed being cut, the grinding wheel diameter that table saw uses is bigger; Normally more than 250 millimeters, be fit to the cutting large-scale workpiece.
Yet; Table saw is not suitable for cutting miniature workpiece on the contrary because the grinding wheel diameter is bigger, and cutting is difficult to realize cutting accurately during miniature workpiece; And moving before and after present cutting mechanism all can only carry out; If the processing work diameter is bigger, the process time of so this cutting mode is long, and cut surface out-of-flatness, accurate.
More than two kinds of cutting machines all do not have control circuit, so handling and security performance are not fine, in reality cutting, can't accurately cut accurate parts.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of PLC main control loop that is used for computerized numerical control sawing machine, can effectively improve the handling and the security performance of cutting machine, the parts that cut ratio is accurate.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of PLC main control loop that is used for computerized numerical control sawing machine is provided; This PLC main control loop that is used for computerized numerical control sawing machine comprises main PLC circuit, feed servo drive circuit, up-down servo-driver circuit, man-machine interface controller, man-machine interface data wire and pulse data line; Said main PLC circuit is connected with the man-machine interface controller through the man-machine interface data wire, and main PLC circuit is connected with up-down servo-driver circuit with the feed servo drive circuit respectively through the pulse data line.
Preferably; Said main PLC circuit comprises main PLC, the first pulse output group contact, the second pulse output group contact, upper limit sensor, lower limit sensor, front limit sensor, back limit sensors, preceding limit travel switch, back limit travel switch, pressure switch, saw wheel overcurrent protection switch, rotation overcurrent protection switch, Oil pump electrical machinery electrothermal relay switch and pump motor electrothermal relay switch; Main PLC is provided with the first pulse output group contact and the second pulse output group contact; Main PLC input contact X0, X1, X2, X3 are connected to first wiring point of upper limit sensing switch, lower limit sensor, front limit sensor, back limit sensors successively; Second wiring point of upper limit sensor, lower limit sensor, front limit sensor, back limit sensors all is connected to the input COM contact of main PLC; The 3rd wiring point of upper limit sensor, lower limit sensor, front limit sensor, back limit sensors all is connected to the 24+ contact of main PLC; The input contact X4 of main PLC, X5, X6, X10, X11, X14, X15 are connected to an end of preceding limit travel switch, back limit travel switch, pressure switch switch, saw wheel overcurrent protection switch, rotation overcurrent protection switch, Oil pump electrical machinery electrothermal relay switch and pump motor electrothermal relay switch successively, and the other end of preceding limit travel switch, back limit travel switch, pressure switch switch, saw wheel overcurrent protection switch, rotation overcurrent protection switch, Oil pump electrical machinery electrothermal relay switch and pump motor electrothermal relay switch all is connected to the input COM contact of main PLC.
Preferably; Said feed servo drive circuit comprises feed servo driver, feed servo encoder line and the feed servo coding that is provided with the CN1 interface; Said feed servo driver is connected to the feed servo coding through feed servo encoder line, and the CN1 interface of feed servo driver is connected to the first pulse output group contact of main PLC.
Preferably; Said up-down servo-driver circuit comprises up-down servo-driver, up-down encoded servo device line and the up-down encoded servo that is provided with the CN1 interface; Said up-down servo-driver is connected to the up-down encoded servo through up-down encoded servo device line, and the CN1 interface of up-down servo-driver is connected to the second pulse output group contact of main PLC.
The invention has the beneficial effects as follows: a kind of PLC main control loop that is used for computerized numerical control sawing machine of the present invention can effectively improve the handling and the security performance of cutting machine, the parts that cut ratio is accurate.
Description of drawings
Fig. 1 is the structural representation of a preferred embodiment of a kind of PLC main control loop that is used for computerized numerical control sawing machine of the present invention;
The mark of each parts is following in the accompanying drawing:
1, main PLC circuit; 2, feed servo drive circuit; 3, up-down servo-driver circuit; 4, man-machine interface controller; 5, man-machine interface data wire; 6, pulse data line; 11, main PLC; 12, the first pulse output group contact; 13, the second pulse output group contact; 14, upper limit sensor; 15, lower limit sensor; 16, front limit sensor; 17, back limit sensors; 18, preceding limit travel switch; 19, back limit travel switch; 21, feed servo driver; 22, feed servo encoder line; 23, feed servo coding; 31, up-down servo-driver; 32, up-down encoded servo device line; 33, up-down encoded servo; 111, pressure switch; 112, saw wheel overcurrent protection switch; 113, rotation overcurrent protection switch; 114, Oil pump electrical machinery electrothermal relay switch; 115, pump motor electrothermal relay switch.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that the advantage of invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1, the embodiment of the invention comprises:
A kind of PLC main control loop that is used for computerized numerical control sawing machine; This PLC main control loop that is used for computerized numerical control sawing machine comprises main PLC circuit 1, feed servo drive circuit 2, up-down servo-driver circuit 3, man-machine interface controller 4, man-machine interface data wire 5 and pulse data line 6; Said main PLC circuit 1 is connected with man-machine interface controller 4 through man-machine interface data wire 5, and main PLC circuit 1 is connected with up-down servo-driver circuit 4 with feed servo drive circuit 3 respectively through pulse data line 6; Said main PLC circuit 1 comprises main PLC11, the first pulse output group contact 12, the second pulse output group contact 13, upper limit sensor 14, lower limit sensor 15, front limit sensor 16, back limit sensors 17, preceding limit travel switch 18, back limit travel switch 19, pressure switch 111, saw wheel overcurrent protection switch 112, rotation overcurrent protection switch 113, Oil pump electrical machinery electrothermal relay switch 114 and pump motor electrothermal relay switch 115; Main PLC11 is provided with the first pulse output group contact 12 and the second pulse output group contact 13; Main PLC11 input contact X0, X1, X2, X3 are connected to first wiring point of upper limit sensing switch 14, lower limit sensor 15, front limit sensor 16, back limit sensors 17 successively; Second wiring point of upper limit sensor 14, lower limit sensor 15, front limit sensor 16, back limit sensors 17 all is connected to the input COM contact of main PLC11; The 3rd wiring point of upper limit sensor 14, lower limit sensor 15, front limit sensor 16, back limit sensors 17 all is connected to the 24+ contact of main PLC11; The input contact X4 of main PLC11, X5, X6, X10, X11, X14, X15 are connected to an end of preceding limit travel switch 18, back limit travel switch 19, pressure switch switch 111, saw wheel overcurrent protection switch 112, rotation overcurrent protection switch 113, Oil pump electrical machinery electrothermal relay switch 114 and pump motor electrothermal relay switch 115 successively, and the other end of preceding limit travel switch 18, back limit travel switch 19, pressure switch switch 111, saw wheel overcurrent protection switch 112, rotation overcurrent protection switch 113, Oil pump electrical machinery electrothermal relay switch 114 and pump motor electrothermal relay switch 115 all is connected to the input COM contact of main PLC11; Said feed servo drive circuit 2 comprises feed servo driver 21, feed servo encoder line 22 and the feed servo coding 23 that is provided with the CN1 interface; Said feed servo driver 21 is connected to feed servo coding 23 through feed servo encoder line 22, and the CN1 interface of feed servo driver 21 is connected to the first pulse output group contact 12 of main PLC11; Said up-down servo-driver circuit 3 comprises up-down servo-driver 31, up-down encoded servo device line 32 and the up-down encoded servo 33 that is provided with the CN1 interface; Said up-down servo-driver 31 is connected to up-down encoded servo 33 through up-down encoded servo device line 32, and the CN1 interface of up-down servo-driver 31 is connected to the second pulse output group contact 13 of main PLC11.
A kind of PLC main control loop that is used for computerized numerical control sawing machine of the present invention can effectively improve the handling and the security performance of cutting machine, the parts that cut ratio is accurate.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.