CN108907336A - Numerical-control double-station cutting machine and its control method - Google Patents

Abstract

The invention discloses a numerically controlled double-station cutting machine, which includes a cutting mechanism and a clamping mechanism. Each set of cutting mechanisms includes a feed oil cylinder, a motor and a saw blade. The saw blade is installed on the motor, and the motor is installed on the feed oil cylinder. Each set of clamping The mechanism includes a clamping oil cylinder and a workpiece profiling die, the workpiece profiling die is installed on the clamping oil cylinder, and two sets of cutting mechanisms are matched with two sets of clamping mechanisms. It also discloses its control method, including the PLC receiving the position signal of the position feedback sensor to judge, when the feed position is close to the upper 1/3 position of the workpiece, the PLC controls the opening of the servo proportional valve to increase, and the feed accelerates to cut the workpiece. When the feeding position is close to the lower 1/3 of the workpiece, the PLC controls the opening of the servo proportional valve to decrease, and the feed decelerates to cut the workpiece. The invention has less turnover times of processed workpieces, high processing efficiency, small equipment occupation area and low manufacturing cost, high processing control precision, high safety performance and convenient maintenance.

Description

Numerical control double-station cutting machine and its control method

technical field

The invention belongs to the field of cutting machines, and in particular relates to a cutting machine for synchronously cutting both ends of a workpiece and an electric automatic control method.

Background technique

The workpiece is generally bent by a CNC bending machine to meet the requirements of the bending angle. In order to meet the end face size and end face quality of the bent workpiece, further cutting processing is required. Most of the existing cutting machines use the process of cutting both ends of the workpiece in sequence. , Every time the cutting process of one end is completed, the workpiece often needs to be re-clamped, which increases the turnover times of the workpiece and reduces the processing efficiency.

Contents of the invention

The purpose of the present invention is to provide a numerically controlled double-station cutting machine, which can reduce the turnover, reduce the floor space of the equipment, thereby reducing the cost, and provide a PLC electrical control method at the same time.

According to one aspect of the present invention, the CNC double-station cutting machine includes a cutting mechanism and a clamping mechanism. There are two groups of cutting mechanisms. Each group of cutting mechanisms includes a feed cylinder, a motor and a saw blade. The saw blade is installed on the motor, and the motor is installed on the There are two sets of feed cylinders and clamping mechanisms. Each set of clamping mechanisms includes clamping cylinders and workpiece profiling molds. The workpiece profiling molds are installed on the clamping cylinders. Two sets of cutting mechanisms are installed to match the two sets of clamping mechanisms. .

Since the two ends of the workpiece are positioned by two workpiece profiling molds that imitate the shape of the workpiece, and are clamped by two clamping cylinders, the positioning accuracy is high, the clamping position is close to the cutting section, and the vibration of the workpiece during processing is reduced. Two feeding oil cylinders respectively drive the motor and the saw blade to feed the workpiece, and the motor drives the saw blade to rotate to complete the cutting at both ends of the workpiece, thus realizing the simultaneous cutting of both ends of the workpiece by two sets of cutting mechanisms, reducing the number of workpiece turnover and improving processing Efficiency, but also reduces equipment footprint and thus reduces costs.

Further, the CNC double-station cutting machine also includes a cutting fluid container, a nozzle, a spiral magnetic separator and a chip collection container, the nozzle is connected to the cutting fluid container, the nozzle is installed facing the saw blade, and the spiral magnetic separator is installed under the saw blade. A chip collection container is installed below the magnetic separator, and the cutting fluid container is connected to the spiral magnetic separator. Thus, the cutting fluid container sprays the cutting fluid through the nozzle to clean the chips at the cutting station, and uses the spiral magnetic separator to separate the cutting fluid and the chips. The separated cutting fluid flows back to the cutting fluid container, and the chips fall into the chip collection container. It overcomes the disadvantage that the existing pipe cutting machine uses a filter to filter the mixed cutting fluid and chips, which is easy to block the filter and cause the cutting fluid to overflow to the working ground to pollute the environment, and keeps the working ground environment clean and free of cutting fluid pollution.

Furthermore, the CNC double-station cutting machine also includes a safety door and a safety grating. The safety door covers the saw blade and the workpiece profiling mold. The safety grating is installed opposite the safety door. The sensor and the first magnetic reed switch, the cylinder are connected with an air pressure source through the electromagnetic reversing valve of the safety door, and the electromagnetic reversing valve of the safety door is correspondingly connected to the rodless chamber of the cylinder and the rod chamber of the cylinder. Thus, the safety grating prevents people or objects from entering the working area, and the safety door protects the rotating saw blade from accidentally breaking and splashing to hurt people, so as to prevent industrial accidents.

Furthermore, the CNC double-station cutting machine also includes PLC, feed electromagnetic reversing valve, servo proportional valve, feed hydraulic control check valve, pressure sensor, clamping electromagnetic reversing valve and clamping hydraulic control check valve, The rodless cavity of each feed cylinder is sequentially connected to a pressure sensor, a feed hydraulic control check valve, a servo proportional valve, and a feed electromagnetic reversing valve, and the rod cavity of each feed cylinder is sequentially connected to a feed hydraulic control one-way valve. Valve, feed electromagnetic reversing valve, feed electromagnetic reversing valve is connected to hydraulic source, the rodless chamber and rod chamber of each clamping cylinder are respectively connected to clamping hydraulic control check valve and clamping electromagnetic reversing valve in sequence, The clamping electromagnetic reversing valve is connected with a hydraulic source, each feed cylinder is provided with a position feedback sensor, each clamping cylinder is provided with a second magnetic reed switch, the position sensor, the position feedback sensor, the first magnetic reed switch, the second The magnetic reed switch, pressure sensor, feed electromagnetic reversing valve, servo proportional valve, and clamping electromagnetic reversing valve are correspondingly connected to the PLC. As a result, the PLC sets the machining size of the workpiece, the feed electromagnetic reversing valve is switched, the servo proportional valve is fully opened, the piston rod of the feed cylinder is fed downward at the maximum speed, and the position feedback sensor feeds back the position of the piston rod of the feed cylinder in real time To the PLC, when it goes down to the set distance, the PLC adjusts the opening of the servo proportional valve to become smaller, then the oil flow in the rodless chamber of the feed cylinder decreases, and the cutting feed speed is reduced, and vice versa, this saw blade The feeding method adopts the combination of servo proportional valve and position feedback sensor, no need to adjust the equipment hardware, only need to adjust the parameters, and it is convenient to change the product and debug.

Further, each group of cutting mechanism also includes a column, a pressure plate and a guide rail, the motor is installed on the saw blade through the gear box, the end of the piston rod of the feed cylinder is fixed on the pressure plate, the gear box is installed on the guide rail through the pressure plate, the feed cylinder is fixed on the column, and the saw Both the sheet and the feed cylinder are set vertically. Thus, the piston rod of the feed oil cylinder drives the pressure plate to slide along the guide rail, thereby driving the feed motion of the gear box, the motor and the saw blade.

Further, each set of clamping mechanisms also includes a support seat, a fixed seat and a table panel, one side of the support seat is provided with a concave block and a rotating seat, one side of the fixed seat is provided with a convex block, and the convex block is matched with the concave block, and the convex block is The block is installed on the cutting mechanism through the fixed seat. The other side of the fixed seat is connected to the rotating seat. The rotating seat can rotate horizontally. The other side of the supporting seat is provided with a clamping cylinder and a guide shaft. The shape mold includes an upper mold pressing plate and a copying lower mold. There are two guide shafts. Each guide shaft passes through the support seat vertically and connects to the upper mold pressing plate. The upper mold pressing plate is set horizontally, and the piston rod end of the clamping cylinder is connected Molded plate, the profiling lower mold is installed on the table top. Thus, the fixed seat rotates horizontally through the rotating seat. When the convex block is separated from the concave block, the support seat is opened relative to the cutting mechanism, which is convenient for replacing the saw blade. The oil cylinder drives the upper mold platen to move to clamp the workpiece on the lower mold for profiling.

According to another aspect of the present invention, the automatic control method of the CNC double-station cutting machine includes the following steps:

(a) PLC controls the conduction of the clamping electromagnetic reversing valve, oil enters the rodless chamber of the clamping cylinder, and the clamping cylinder moves downward;

(b) PLC controls the clamping electromagnetic reversing valve to return to the neutral position, and the clamping pressure of the clamping oil cylinder is maintained through the clamping hydraulic control check valve;

(c) The PLC controls the conduction of the electromagnetic reversing valve of the safety door, the rodless cavity of the cylinder is sucked in, and the cylinder moves upward;

(d) PLC receives the position signal of the position sensor and judges that the safety door has risen to the top,

Start the motor, set the delay time, the PLC controls the conduction of the feed electromagnetic reversing valve, the oil pipe in the rodless chamber of the feed cylinder enters the oil, the PLC controls the opening of the servo proportional valve to the maximum, and the feed cylinder feeds at the maximum speed;

(e) PLC receives the position signal of the position feedback sensor and judges that when the feed position is close to the top of the workpiece, the PLC controls the opening of the servo proportional valve to decrease, and the feed decelerates to cut;

(f) The PLC receives the position signal of the position feedback sensor for judgment. When the feed position is close to the upper 1/3 position of the workpiece, the PLC controls the opening of the servo proportional valve to increase, and the feed accelerates to cut the workpiece. When the feed position is close to the lower part of the workpiece In the 1/3 position, PLC controls the opening of the servo proportional valve to decrease, and the feed decelerates to cut the workpiece;

(g) PLC receives the position signal of the position feedback sensor and judges that when the feed position is close to the bottom of the workpiece, the PLC controls the conduction of the feed electromagnetic reversing valve, the rod chamber of the feed cylinder enters oil, and the PLC controls the opening of the servo proportional valve to the maximum, the maximum speed of the feed cylinder is reset, and the motor stops;

(h) The PLC controls the conduction of the electromagnetic reversing valve of the safety door, the rod cavity of the cylinder is sucked in, the cylinder moves downward, and the safety door is reset.

Further, the step (a) also includes a step before the PLC receives the light curtain sensing signal of the safety grating, and judges whether someone or an object enters the work area, and if so, the PLC control system stops suddenly and controls the intermediate relay to turn on the alarm signal light and the buzzer If not, then start step (a); step (b) and step (c) also include a step, PLC receives the light curtain sensing signal of the safety grating, and judges whether people or objects enter the work area, if so, PLC The control system makes an emergency stop and controls the intermediate relay to turn on the alarm signal light and the buzzer, if not, start step (c).

Further, a step is also included between step (a) and step (b), the PLC receives the switching signal of the second magnetic reed switch, and judges whether the second magnetic reed switch is triggered within the set time, if so, then starts step (b ), if not, then the PLC controls the intermediate relay to conduct the alarm signal lamp and the buzzer; a step is also included between the step (c) and the step (d), and the PLC receives the switch signal of the first magnetic reed switch to judge the first magnetic reed switch Whether the switch is triggered within the set time, if so, the PLC controls the intermediate relay to turn on the alarm signal light and the buzzer, if not, then start step (d); step (d) also includes when the feed time exceeds the set time , PLC controls the intermediate relay to turn on the alarm signal light and the buzzer.

Further, there is also a step between step (e) and step (f). The PLC receives the pressure signal from the pressure sensor and judges whether the cutting feed load exceeds the set value. If so, replace the saw blade. If not, perform Step (f).

The invention has less turnover times of processed workpieces, high processing efficiency, small equipment footprint, low manufacturing cost, high processing control precision, high safety performance and convenient maintenance.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of numerical control double-station cutting machine of the present invention;

Fig. 2 is a three-dimensional schematic diagram of the clamping mechanism of the numerically controlled double-station cutting machine shown in Fig. 1;

Fig. 3 is a structural schematic diagram of the clamping mechanism of the numerically controlled double-station cutting machine shown in Fig. 1;

Fig. 4 is a schematic structural diagram of the cutting mechanism of the CNC double-station cutting machine shown in Fig. 1 and a hydraulic schematic diagram of the CNC double-station cutting machine.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 4, the CNC double-station cutting machine includes a cutting mechanism 1, a clamping mechanism 2, a cutting fluid container 3, a nozzle 4, a spiral magnetic separator 5, a chip collection container 6, a safety door 7, and a safety grating 8 and PLC9. The cutting mechanism 1 is matched with the clamping mechanism 2 .

The nozzle 4 is connected to the cutting fluid container 3 through the flow regulating valve 10 and the cutting fluid pump 11 in turn. The nozzle 4 is installed facing the saw blade 1c, and the spiral magnetic separator 5 is installed under the saw blade 1c. The spiral magnetic separator 5 is produced by Taizhou Ruichuang. The model is CF-200 spiral magnetic separator. A chip collection container 6 is installed below the spiral magnetic separator 5 , and the cutting fluid container 3 communicates with the spiral magnetic separator 5 . The cutting fluid container 3 sprays the cutting fluid through the nozzle 4 to clean the chips at the cutting station, and uses the spiral magnetic separator 5 to separate the cutting fluid and chips, and the separated cutting fluid flows back to the cutting fluid container 3, and the chips fall into the chip collection container 6 , Keep the working ground environment clean and free from cutting fluid pollution.

Safety gate 7 and safety grating 8 are provided with corresponding two groups, and each safety gate 7 covers saw blade 1c and workpiece profiling mold 2b correspondingly. 12 is vertically arranged, the cylinder 12 is provided with a position sensor 13 and a first magnetic reed switch 14, the air pressure source 15 is connected to the electromagnetic reversing valve 16 of the safety door, and the electromagnetic reversing valve 16 of the safety door is respectively connected to the valve of the cylinder 12 through the one-way throttle valve 17. The rod cavity of rodless cavity, cylinder 12. The safety grating 8 prevents people or objects from entering the work area, and the safety door 7 protects the rotating saw blade 1c from accidentally breaking and splashing to hurt people, so as to prevent industrial accidents.

There are two groups of cutting mechanism 1, each group of cutting mechanism 1 includes feed oil cylinder 1a, motor 1b, saw blade 1c, column 1d, pressure plate 1e and guide rail 1f, saw blade 1c, feed oil cylinder 1a are vertically arranged, and feed oil cylinder 1a adopts Japan Sun Iron Works 70P-8 series oil cylinder, and each feed oil cylinder 1a is equipped with a position feedback sensor 1g. The motor 1b is installed on the saw blade 1c through the gear box 1h. The end of the piston rod of the feed cylinder 1a is sleeved with the first connecting sleeve 1i. The first connecting sleeve 1i is sleeved with the pressure plate 1e and fixed with bolts. The fixed plate 1j is connected and fixed with bolts, the column 1d is bolted under the fixed plate 1j, and the gear box 1h is installed on the guide rail 1f through the pressure plate 1e. The piston rod of the feed cylinder 1a drives the pressure plate 1e to slide along the guide rail 1f, thereby driving the feeding motion of the gear box 1h, the motor 1b, and the saw blade 1c.

As shown in Figures 1, 2, and 3, there are two groups of clamping mechanisms 2, and each group of clamping mechanisms 2 includes a clamping oil cylinder 2a, a workpiece profiling mold 2b, a support seat 2c, a fixed seat 2d, and a table panel 2e. The clamping cylinders 2a are arranged vertically, and each clamping cylinder 2a is provided with a second reed switch 2f. One side of the supporting seat 2c is provided with a concave block 2g and a rotating seat 2h, one side of the fixed seat 2d is provided with a protruding block 2i, and the protruding block 2i is fixed to the column 1d through the bolts of the fixed seat 2d. The other side of the fixed seat 2d is connected to the rotating seat 2h, and the rotating seat 2h has a built-in pin shaft 2j, the top bolt of the pin shaft 2j is fixed to the limit plate 2k, and the two ends of the pin shaft 2j are pressed against the rotating seat through the thrust copper sleeve 2l. The inner wall of seat 2h. The clamping cylinder 2a is installed on the other side of the support seat 2c. The workpiece profiling mold 2b includes an upper mold pressing plate 2m and a profiling lower mold 2n. The upper mold pressing plate 2m is horizontally arranged and made of polyurethane material. The clamping oil cylinder 2a The end of the piston rod is sleeved with a nut 2o, the nut 2o is sleeved with a second connecting sleeve 2p, the bolt below the second connecting sleeve 2p is fixed with a base plate 2q, and the two guide shafts 2r pass through the support seat vertically through the linear bearing 2s respectively 2c and connected to the base plate 2q, and the lower part of the base plate 2q is bolted to the upper molding plate 2m. The table top 2e is bolted to the upright column 1d, and the top of the table top 2e is provided with a module fixing plate 2t, a template 2u, and a profiling lower mold 2n, and the flat key 2v is positioned between the table top 2e and the module fixing plate 2t. The group fixing plate 2t and the template 2u are positioned by the flat key 2v, and the template 2u is pressed and fixed by the pressure plate cylinder 2w, wherein the pressure plate cylinder 2w adopts the NOS series pressure plate cylinder produced by Wuxi Junfan, so that the mold 2n under the profiling can be replaced quickly . When the convex block 2i cooperates with the concave block 2g, the locking plate 2x on the concave block 2g rotates to the positioning column 2y snapped on the convex block 2i, thereby locking the convex block 2i and the concave block 2g, and then supporting the seat 2c and The fixing seat 2d is locked relative to the column 1d, and the clamping cylinder 2a drives the upper molding plate 2m to move downward to clamp the workpiece on the profiling lower mold 2n. The locking plate 2x on the concave block 2g is unlocked with the positioning column 2y on the convex block 2i, and the fixed seat 2d drives the rotating seat 2h to rotate horizontally along the pin shaft 2j. When the convex block 2i is separated from the concave block 2g, the supporting seat 2c and the fixed seat 2d The relative column 1d is opened to facilitate the replacement of the saw blade 1c.

Since the two ends of the workpiece 18 are positioned using two workpiece profiling molds 2b that imitate the shape of the workpiece, and are clamped by two clamping cylinders 2a, the positioning accuracy is high, the clamping position is close to the cutting section, and the workpiece 18 is reduced during processing. The two feed cylinders 1a respectively drive the motor 1b and the saw blade 1c to feed the workpiece 18, and the motor 1b drives the saw blade 1c to rotate to complete the cutting at both ends of the workpiece 18, thus realizing the synchronous cutting of the workpiece by two sets of cutting mechanisms 1 The two ends of 18 reduce the turnover times of workpiece 18, improve the processing efficiency, and also reduce the floor area of the equipment to reduce the cost.

As shown in Figures 1 and 4, PLC9 is correspondingly connected with position sensor 13, position feedback sensor 1g, first magnetic reed switch 14, second magnetic reed switch 2f, pressure sensor 19, feed electromagnetic reversing valve 20, and servo proportional valve 21 , Clamp the electromagnetic reversing valve 22, the rodless cavity of each feed cylinder 1a is connected to the pressure sensor 19, the feed hydraulic control check valve 23, the servo proportional valve 21, and the feed electromagnetic reversing valve 20 in sequence, each feed The rod cavity of the oil supply cylinder 1a is connected to the feed hydraulic control check valve 23 and the feed electromagnetic reversing valve 20 in turn, the feed electromagnetic reversing valve 20 is connected to the hydraulic pressure source 24 , and the hydraulic pressure source 24 is connected to the electromagnetic overflow valve 25 . The rodless cavity and the rod cavity of each clamping oil cylinder 2 a are respectively connected to the clamping hydraulic control check valve 26 and the clamping electromagnetic reversing valve 22 in sequence, and the clamping electromagnetic reversing valve 22 is connected to the hydraulic pressure source 24 . PLC9 sets the machining size of the workpiece, switches the feed electromagnetic reversing valve 20, fully opens the servo proportional valve 21, and feeds the piston rod of the feed cylinder 1a downward at the maximum speed, and the position feedback sensor 1g feeds back the piston of the feed cylinder 1a in real time When the position of the rod reaches PLC9, when it goes down to the set distance, PLC9 adjusts the opening of the servo proportional valve 21 to become smaller, then the oil flow in the rodless chamber of the feed cylinder 1a decreases, and the cutting feed speed is reduced, and vice versa.

The above-mentioned cutting feed movement adopts the closed-loop control system of the servo proportional valve 21 and the position feedback sensor 1g, which is stable and reliable, and has high control precision, effectively overcoming the shortcomings of the position feedback of the servo proportional valve 21 and the numerical control system being unable to accurately judge the position signal. The up and down feed movement of the feed cylinder 1a is accurately fed back to the numerical control system through the position feedback of the position feedback sensor 1g, so that the spool control of the servo proportional valve 21 is precisely positioned by the negative feedback of the servo proportional amplifier, and the progress of the numerical control system The motion command is guaranteed by the position feedback sensor 1g, which double guarantees that the position control is more accurate.

The automatic control method of the CNC double-station cutting machine includes two sets of fully synchronized control methods for the cutting mechanism 1, the clamping mechanism 2, the safety door 7 and the safety grating 8, and each group of control methods includes the following steps:

(a) PLC9 receives the light curtain sensing signal from the safety grating 8, and judges whether someone or an object enters the working area. If so, the PLC9 control system makes an emergency stop and controls the intermediate relay to turn on the alarm signal light and the buzzer. If not, start the steps (b);

(b) PLC9 controls the conduction of the clamping electromagnetic reversing valve 22, oil enters the rodless cavity of the clamping oil cylinder 2a, and the clamping oil cylinder 2a moves downward;

(c) PLC9 receives the switch signal of the second reed switch 2f, judges whether the second reed switch 2f triggers within the set time, if so, then starts step (d), if not, then PLC9 controls the conduction alarm of the intermediate relay Signal lights and buzzers;

(d) PLC9 controls the clamping electromagnetic reversing valve 22 to return to the neutral position, and maintains the clamping pressure of the clamping oil cylinder 2a through the clamping hydraulic control check valve 26;

(e) PLC9 receives the light curtain sensing signal of the safety grating 8, and judges whether someone or an object enters the working area. If so, the PLC9 control system makes an emergency stop and controls the intermediate relay to turn on the alarm signal light and the buzzer. If not, start the steps (f);

(f) PLC9 controls the conduction of the electromagnetic reversing valve 16 of the safety door, the rodless chamber of the cylinder 12 takes in air, and the cylinder 12 moves upward;

(g) PLC9 receives the switch signal of the first magnetic reed switch 14, judges whether the first magnetic reed switch 14 triggers within the set time, if so, then PLC9 controls the intermediate relay conduction warning signal lamp and the buzzer, if not, then start step (h);

(h) PLC9 receives the position signal of the position sensor 13, and judges that the safety door 7 has risen to the top, starts the motor 1b, and delays the setting time. The oil pipe enters the oil, the PLC9 controls the opening of the servo proportional valve 21 to the maximum, and the feed cylinder 1a feeds at the maximum speed. When the feed time exceeds the set time, the PLC9 controls the intermediate relay to turn on the alarm signal light and the buzzer;

(i) PLC9 receives the position signal of the position feedback sensor 1g, and judges that when the feed position is close to the top of the workpiece 18, the PLC9 controls the opening of the servo proportional valve 21 to decrease, and the feed decelerates to cut;

(j) PLC9 receives the pressure signal of the pressure sensor 19, and judges whether the cutting feed load exceeds the set value, if so, replace the saw blade 1c, if not, then proceed to step (k);

The feed cylinder 1a pushes the saw blade 1c to rotate and cut off the workpiece 18. Under normal working conditions, the pressure in the rodless chamber of the feed cylinder 1a is a certain range of pressure values. When the rotating saw blade 1c is severely worn out, the blade becomes blunt or the saw blade 1c is damaged. In the case that the saw blade 1c cannot cut the workpiece 18, the load of the feed cylinder 1a becomes larger, and the pressure in the rodless chamber of the feed cylinder 1a rises, exceeding the set value, and the alarm prompts to replace the saw blade 1c, protecting the cutting mechanism 1 in the The workpiece 18 is not cut when the saw blade 1c is damaged;

(k) PLC9 receives the position signal of the position feedback sensor 1g to judge. When the feed position is close to the upper 1/3 position of the workpiece 18, the PLC9 controls the opening of the servo proportional valve 21 to increase, and the feed accelerates to cut the workpiece 18. When the feed When the position is close to the lower 1/3 of the workpiece 18, the PLC9 controls the opening of the servo proportional valve 21 to decrease, and the feed decelerates to cut the workpiece 18;

(l) PLC9 receives the position signal of the position feedback sensor 1g, and judges that when the feed position is close to the bottom of the workpiece 18, PLC9 controls the conduction of the feed electromagnetic reversing valve 20, feeds oil into the rod chamber of the feed cylinder 1a, and PLC9 controls the servo The proportional valve 21 opens to the maximum, the maximum speed of the feed cylinder 1a is reset, and the motor 1b stops;

(m) PLC9 controls the conduction of the electromagnetic reversing valve 16 of the safety door, the rod chamber of the cylinder 12 takes in air, the cylinder 12 moves downward, and the safety door 7 resets.

What have been described above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims (10)

1. numerical-control double-station cutting machine, which is characterized in that including cutting mechanism (1) and clamp system (2), the cutting mechanism (1) there are two groups, every group of cutting mechanism (1) includes feed cylinder (1a), motor (1b) and saw blade (1c), saw blade (1c) installation In motor (1b), the motor (1b) is installed on feed cylinder (1a), and the clamp system (2) has two groups, every group of clamp system It (2) include clamping cylinder (2a) and workpiece profiling mold (2b), the workpiece profiling mold (2b) is installed on clamping cylinder (2a), Two groups of cutting mechanisms (1) are matchingly installed with two groups of clamp systems (2).

2. numerical-control double-station cutting machine according to claim 1, which is characterized in that further include cutting liquid container (3), nozzle (4), helimagnetism separator (5) and chip collection vessel (6), nozzle (4) connection cutting liquid container (3), the nozzle (4) it is installed towards saw blade (1c), helimagnetism separator (5) are installed in the lower section of the saw blade (1c), and described spiral magnetic point Chip collection vessel (6) are installed in lower section from device (5), and the cutting liquid container (3) is connected to spiral magnetic separator (5).

3. numerical-control double-station cutting machine according to claim 2, which is characterized in that further include safety door (7) and safety light Grid (8), the safety door (7) cover saw blade (1c), workpiece profiling mold (2b), and the safe grating (8) is right along safety door (7) Formula installation is penetrated, the safety door (7) is connected with cylinder (12), and the cylinder (12) is vertically arranged, and the cylinder (12) is equipped with position Sensor (13) and the first magnetic reed switch (14) are set, the cylinder (12) is connected with air pressure by safe door electromagnetic reversal valve (16) Source (15), the safe door electromagnetic reversal valve (16) are correspondingly connected with the rod chamber of the rodless cavity of cylinder (12), cylinder (12).

4. numerical-control double-station cutting machine according to claim 3, which is characterized in that further include PLC (9), feeding electromagnetism change To valve (20), servo proportion (21), feeding hydraulic control one-way valve (23), pressure sensor (19), clamp solenoid directional control valve (22) With clamping hydraulic control one-way valve (26), the rodless cavity of each feed cylinder (1a) is sequentially connected pressure sensor (19), feeding hydraulic control Check valve (23), servo proportion (21), feeding solenoid directional control valve (20), the rod chamber of each feed cylinder (1a) are sequentially connected Hydraulic control one-way valve (23), feeding solenoid directional control valve (20) are fed, the feeding solenoid directional control valve (20) is connected with hydraulic power source (24), The rodless cavity and rod chamber of each clamping cylinder (2a) are sequentially connected respectively to be clamped hydraulic control one-way valve (26), clamps solenoid directional control valve (22), clamping solenoid directional control valve (22) connection hydraulic power source (24), each feed cylinder (1a) are equipped with position feedback transducer (1g), each clamping cylinder (2a) are equipped with the second magnetic reed switch (2f), the position sensor (13), position feedback transducer (1g), the first magnetic reed switch (14), the second magnetic reed switch (2f), pressure sensor (19), feeding solenoid directional control valve (20), servo Proportioning valve (21), clamping solenoid directional control valve (22) are correspondingly connected with PLC (9).

5. numerical-control double-station cutting machine according to claim 1 to 4, which is characterized in that every group of cutting mechanism (1) is also Including column (1d), pressing plate (1e) and guide rail (1f), the motor (1b) is installed on saw blade (1c) by gear-box (1h), described The piston-rod end fixation clip (1e) of feed cylinder (1a), the gear-box (1h) are installed on guide rail by pressing plate (1e) (1f), the feed cylinder (1a) are fixed on column (1d), and the saw blade (1c), feed cylinder (1a) are vertically arranged.

6. numerical-control double-station cutting machine according to claim 1 to 4, which is characterized in that every group of clamp system (2) is also Including support base (2c), fixing seat (2d) and deck plate (2e), the side of the support base (2c) is equipped with concave block (2g) and rotates The side of seat (2h), the fixing seat (2d) is equipped with convex block (2i), and the convex block (2i) is matched with concave block (2g), the convex block (2i) is installed on cutting mechanism (1) by fixing seat (2d), and the other side of the fixing seat (2d) is connected to rotating seat (2h), institute Stating rotating seat (2h) can horizontally rotate, and the other side of the support base (2c) is equipped with clamping cylinder (2a) and guide shaft (2r), described Clamping cylinder (2a) is vertically arranged, and the workpiece profiling mold (2b) includes mold (2n), institute under upper molded plate (2m) and profiling Stating guide shaft (2r) has two, and every guide shaft (2r) passes vertically through support base (2c) and connects upper molded plate (2m), the upper molding Plate (2m) is in horizontally disposed, piston-rod end connection upper molded plate (2m) of the clamping cylinder (2a), mold under the profiling (2n) is installed on deck plate (2e).

7. control method, which is characterized in that include the following steps：

(a) PLC (9) control clamps solenoid directional control valve (22) conducting, the rodless cavity oil inlet of clamping cylinder (2a), clamping cylinder (2a) It moves downward；

(b) PLC (9) control clamps position in solenoid directional control valve (22) return, passes through and clamps hydraulic control one-way valve (26) pressure maintaining clamping oil The clamping pressure of cylinder (2a)；

(c) PLC (9) controls safe door electromagnetic reversal valve (16) conducting, the rodless cavity air inlet of cylinder (12), and cylinder (12) is transported upwards It is dynamic；

(d) PLC (9) receives the position signal of position sensor (13), and judges that safety door (7) rises to top, starts motor (1b), be delayed setting time, PLC (9) control feeding solenoid directional control valve (20) conducting, the rodless cavity oil pipe of feed cylinder (1a) into Oil, PLC (9) control servo proportion (21) aperture to maximum, the feeding of feed cylinder (1a) maximum speed；

(e) PLC (9) receives the position signal of position feedback transducer (1g), and judges supplying position close at the top of workpiece (18) When, PLC (9) controls servo proportion (21) aperture and reduces, and feeding, which is slowed down, cuts；

(f) position signal that PLC (9) receives position feedback transducer (1g) is judged, when supplying position is close to workpiece (18) When 1/3 position of top, PLC (9) controls servo proportion (21) aperture and increases, and feeding accelerates cutting workpiece (18), when feeding position When setting close to workpiece (18) 1/3 position of lower part, PLC (9) controls servo proportion (21) aperture and reduces, and feeding is slowed down cutting workpiece (18)；

(g) PLC (9) receives the position signal of position feedback transducer (1g), and judges supplying position close to workpiece (18) bottom When, PLC (9) control feeding solenoid directional control valve (20) conducting, the rod chamber oil inlet of feed cylinder (1a), PLC (9) control servo-ratio Example valve (21) aperture to maximum, feed cylinder (1a) maximum speed resets, and motor (1b) stops；

(h) PLC (9) controls safe door electromagnetic reversal valve (16) conducting, the rod chamber air inlet of cylinder (12), and cylinder (12) is transported downwards Dynamic, safety door (7) resets.

8. control method according to claim 7, which is characterized in that

It further include step before step (a),

PLC (9) receives the light curtain inductive signal of safe grating (8), judges whether there is people or object and enters working region, if so, Then PLC (9) control system emergency stop and intermediate relay conducting warning light and buzzer is controlled, if it is not, then starting step (a)；

It further include step between step (b), step (c),

PLC (9) receives the light curtain inductive signal of safe grating (8), judges whether there is people or object and enters working region, if so, Then PLC (9) control system emergency stop and intermediate relay conducting warning light and buzzer is controlled, if it is not, then starting step (c)。

9. control method according to claim 7, which is characterized in that

It further include step between step (a), step (b),

PLC (9) receive the second magnetic reed switch (2f) switching signal, judge the second magnetic reed switch (2f) within the set time whether Triggering, if so, starting step (b), if it is not, then PLC (9) controls intermediate relay conducting warning light and buzzer；

It further include step between step (c), step (d),

PLC (9) receive the first magnetic reed switch (14) switching signal, judge the first magnetic reed switch (14) within the set time whether Triggering, if so, PLC (9) control intermediate relay conducting warning light and buzzer, if it is not, then starting step (d)；

Step (d) further includes when feeding the time more than setting time, and PLC (9) controls intermediate relay and warning light is connected With buzzer.

10. control method according to claim 7, which is characterized in that

It further include step between step (e), step (f),

PLC (9) receives the pressure signal of pressure sensor (19), and judges whether cutting feeding load exceeds setting value, if so, Saw blade (1c) is then replaced, if it is not, then carrying out step (f).