CN111531012A - Forming system for piston machining and control method thereof - Google Patents
Forming system for piston machining and control method thereof Download PDFInfo
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- CN111531012A CN111531012A CN202010362944.9A CN202010362944A CN111531012A CN 111531012 A CN111531012 A CN 111531012A CN 202010362944 A CN202010362944 A CN 202010362944A CN 111531012 A CN111531012 A CN 111531012A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Programme control arrangements
Abstract
The invention discloses a forming system for piston machining, which is high in forming efficiency and good in forming effect, and can realize automatic control in the forming process.
Description
Technical Field
The invention belongs to the technical field of piston machining, and particularly relates to a forming system for piston machining and a control method thereof.
Background
The brake caliper is an assembly attached to the front and the rear of a brake disc, a single or a plurality of pistons are arranged in the brake caliper, pressure is generated when a brake pedal is stepped down, brake oil is forced to push the pistons, and then a brake pad is pushed to clamp the brake disc inwards to achieve the effect of braking and decelerating; therefore, the piston belongs to one of the core parts in the caliper, and the quality of the piston directly influences the quality of the caliper; and the piston of the caliper is closely matched with the oil cylinder which is configured with the piston of the caliper, can slide back and forth, but can not cause brake fluid leakage when moving, so the excircle of the piston of the caliper has higher precision and wear resistance, and the control of stamping speed and the selection of a die are particularly important when forming, therefore, the existing processing equipment and process need to be further improved for improving the quality and the production efficiency of the piston.
Disclosure of Invention
The invention aims to provide a forming system for piston machining, which has high forming efficiency and good forming effect and can realize automatic control in the forming process.
The purpose of the invention is realized as follows: a molding system for piston processing, includes the frame, its characterized in that: the stamping die comprises a rack, an upper die plate, a lower die plate and a top plate, wherein the rack is provided with an upper die plate, a lower die plate and the top plate which are sequentially arranged from top to bottom, the rack is further provided with a first hydraulic cylinder for driving the top plate to lift, a second hydraulic cylinder for driving the upper die plate to lift and a driving system for controlling the first hydraulic cylinder and the second hydraulic cylinder, the lower die plate is provided with a stamping module, the stamping module comprises a rough drawing die, a secondary drawing die, a tertiary drawing die and a quartic drawing die which are sequentially arranged, a first stamping cavity is arranged in the rough drawing die, a second stamping cavity is arranged in the secondary drawing die, a third stamping cavity is arranged in the tertiary drawing die, a fourth stamping cavity is arranged in the quartic drawing die, the top plate is respectively provided with a first ejector rod arranged in the first stamping cavity, a second ejector rod arranged in the second stamping cavity, a third ejector rod arranged in the third stamping cavity and a fourth ejector, The second punching cavity, the third punching cavity and the fourth punching cavity are opposite to the punching rod;
the top of the first punching cavity is provided with a tapered hole, and the rough drawing die is used for punching the piston sheet raw material into a blank;
the secondary stretching die is used for carrying out secondary stretching on the blank stretched by the coarse stretching die;
the third stretching die is used for carrying out third fine stretching on the blank stretched by the second stretching die;
and the top of the fourth ejector rod is provided with an auxiliary die for forming a piston tail structure, and the fourth stretching die is used for forming the piston tail of the blank stretched by the third stretching die.
The invention is further configured to: the rough drawing die, the secondary drawing die, the tertiary drawing die and the quartic drawing die comprise an outer die body and an inner die body, the outer die body is sleeved on the outer side of the inner die body, the inner die body is formed by sintering iron-based powder through powder metallurgy, an oil storage ring groove is formed in the outer wall of the inner die body, an oil filling hole communicated with the oil storage ring groove is formed in the outer die body, a pressing ring used for axially fixing the inner die body is arranged at the top of the outer die body, a plurality of micro-pore structures are arranged on the inner die body, and the plurality of micro-pore structures form an oil passage communicated with the.
The invention is further configured to: the driving system comprises an oil supply pipeline, an oil return pipeline, a first Y-shaped three-position four-way valve, a second Y-shaped three-position four-way valve and a hydraulic control one-way valve, wherein the first Y-shaped three-position four-way valve comprises a first oil inlet P, a first working oil port A, a first working oil port B and a first oil return port T, a first hydraulic cylinder comprises a first rod cavity and a first non-rod cavity, the first rod cavity is communicated with the first working oil port A through a first oil path, the first non-rod cavity is communicated with the first working oil port B through a second oil path, the hydraulic control one-way valve is arranged on a second oil path, the second Y-shaped three-position four-way valve comprises a second oil inlet P, a second working oil port A, a second working oil port B and a second oil return port T, the second hydraulic cylinder comprises a second rod cavity and a second non-rod cavity, the second rod cavity is communicated with the second working oil port A through a third oil path, and the second non-rod cavity is communicated with the second working oil port B, the fourth oil path is connected with a throttle valve and a first on-off valve in parallel, the oil supply pipeline and the oil return pipeline are communicated with the first hydraulic cylinder through a first Y-shaped three-position four-way valve, the oil supply pipeline and the oil return pipeline are communicated with the second hydraulic cylinder through a second Y-shaped three-position four-way valve, a slide valve is further arranged between the third oil path and the fourth oil path, and a one-way valve is further arranged between the oil outlet end of the slide valve and the oil inlet end of the first rod-free cavity.
The invention is further configured to: the driving system further comprises a PLC control unit, the first Y-shaped three-position four-way valve, the second Y-shaped three-position four-way valve, the first on-off valve and the sliding valve are controlled by the PLC control unit, and the first pressure sensor and the second pressure sensor are electrically connected with the PLC control unit.
The invention is further configured to: the driving system further comprises a lubricating oil liquid storage cylinder, the lubricating oil liquid storage cylinder comprises a third rod cavity and a third rodless cavity, a reset spring is arranged in the third rod cavity, lubricating oil is filled in the third rod cavity, a fifth oil path used for feeding in and discharging the lubricating oil is further arranged on the third rod cavity, the fifth oil path is communicated with the oil filling hole, a sixth oil path used for feeding in and discharging the hydraulic oil is arranged on the third rodless cavity, the sixth oil path is connected to the fourth oil path, the sixth oil path is connected between the throttling valve and the second rodless cavity, and a second on-off valve is further arranged on the sixth oil path.
The invention is further configured to: the outer die body is also provided with a pressure regulating hole, the pressure regulating hole is connected with a pressure regulating valve, the pressure regulating valve comprises an air inlet valve and an air outlet valve which are arranged in series, the air inlet valve comprises a first valve core and a first spring, the first valve core and the first spring are used for controlling the air inlet valve to be communicated, when air is fed, the first spring is compressed, the first valve core is separated from a valve port of the air inlet valve, and air feeding is realized; the exhaust valve comprises a second valve core and a second spring, the second valve core and the second spring are used for controlling the exhaust valve to be closed, when the exhaust valve exhausts, the second spring is compressed, and the second valve core is separated from a valve port of the air outlet valve, so that the exhaust is realized.
Through the technical scheme, the method has the following advantages: multiple groups of stretching dies are adopted on the same equipment to realize multi-station simultaneous forming, and the stretching dies are controlled by a hydraulic driving system together, so that the control precision and the forming efficiency are high;
a method of controlling a molding system for piston machining, comprising the steps of:
firstly, feeding: sequentially placing thin plate raw materials to be subjected to punch forming on a rough drawing die;
secondly, the second hydraulic cylinder is pressed down rapidly: after feeding, the first Y-shaped three-position four-way valve is switched to a middle position, the second Y-shaped three-position four-way valve is switched to a right position, the first on-off valve is switched to an on state, the second on-off valve is in an off state, hydraulic oil in the oil supply pipeline enters the second rodless cavity from the second working oil port B, and the upper die plate is provided with a dynamic stamping rod to press down;
thirdly, decelerating and pressing down by a second hydraulic cylinder: when any one first pressure sensor detects pressure, namely the stamping rod is collided with the sheet raw material, the first on-off valve is switched to an off state, hydraulic oil in oil supply management enters the second rodless cavity from the second working oil port B through the throttle valve, and the lower template drives the ejector rod to decelerate and press down; meanwhile, the slide valve is communicated with a fourth oil way, and partial hydraulic oil enters the first rodless cavity from the second working oil port B through the slide valve and the check valve to supplement pressure to the rodless cavity; meanwhile, the second on-off valve is switched to be in an on state, part of the hydraulic oil enters a third rodless cavity from a second working oil port B through the throttle valve and the second on-off valve, and lubricating oil in the third rodless cavity is pressed out to the oil storage tank;
fourthly, the second hydraulic cylinder rapidly retracts: when the pressure detected by the second pressure sensor is the same as the pressure detected by the first pressure sensor and is maintained for a period of time, the second Y-shaped three-position four-way valve is switched to the left position, the first on-off valve is switched to the on state, the slide valve is switched to the off state, hydraulic oil in the oil supply pipeline enters the second rod cavity from the second working oil port A, hydraulic oil in the second rodless cavity returns to the oil return pipeline through the first on-off valve, the second working oil port B and the second oil return port T, and the upper template is retracted; meanwhile, the hydraulic oil in the third rodless cavity returns to an oil return pipeline through the first on-off valve, the second working oil port B and the second oil return port T under the pressure of the return spring;
fifthly, ejecting out the first hydraulic cylinder: when the pressure detected by the first pressure sensor disappears, the first Y-shaped three-position four-way valve is switched to the right position, hydraulic oil in the oil supply pipeline enters the first rodless cavity from the first working oil port B, and the hydraulic oil in the first rod cavity returns to the oil return pipeline from the first working oil port A and the first oil return port T, so that the blank which is punched and stretched is ejected out; respectively grabbing the blank on the rough drawing die, the blank on the secondary drawing die, the blank on the tertiary drawing die and the blank on the quartic drawing die by a manipulator;
sixthly, retracting the first hydraulic cylinder: when the pressure detected by the second pressure sensor disappears, the first Y-shaped three-position four-way valve is switched to the left position, hydraulic oil in the oil supply pipeline enters the first rod cavity from the first working oil port A, and hydraulic oil in the first rodless cavity returns to the oil return pipeline from the first working oil port B and the first oil return port T, so that the return is realized;
and seventhly, placing the blank on the rough drawing die onto a secondary drawing die by the manipulator, placing the blank on the secondary drawing die onto a tertiary drawing die, placing the blank on the tertiary drawing die onto a quartic drawing die, blanking the blank on the quartic drawing die, returning to the first step, and repeating the first step to the seventh step.
The control method realizes automatic control, can keep the optimal stamping speed in the stamping and stretching process, improves the production efficiency, can realize lubrication control in the stamping process, and improves the final forming effect;
through the setting of inner die body and lubricating oil liquid storage cylinder for can realize the self-lubricating in the forming process, improve the quality when piston excircle shaping.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection structure of the rough drawing die and the pressure regulating valve according to the present invention;
FIG. 3 is a schematic diagram of the drive system of the present invention;
the reference numbers in the figures are: 1. mounting a template; 2. a lower template; 3. a top plate; 4. a first hydraulic cylinder; 5. a second hydraulic cylinder; 6. a rough drawing die; 7. secondary drawing die; 8. drawing the die for three times; 9. drawing the die for four times; 10. a tapered bore; 11. an outer mold body; 12. an inner mold body; 13. an oil storage ring groove; 14. an oil filler hole; 15. pressing a ring; 16. a stamping rod; 20. an oil supply line; 21. an oil return line; 22. a first Y-shaped three-position four-way valve; 23. a second Y-shaped three-position four-way valve; 24. a hydraulic control check valve; 25. a first rod chamber; 26. a first rod-less chamber; 27. a first oil passage; 28. a second oil passage; 29. a second rod chamber; 30. a second rodless cavity; 31. a third oil passage; 32. a fourth oil passage; 33. a throttle valve; 34. a first on-off valve; 35. a spool valve; 36. a one-way valve; 41. a third rod chamber; 42. a third rodless cavity; 43. a fifth oil passage; 44. a sixth oil passage; 45. a second on-off valve; 51. an intake valve; 52. and (4) exhausting the valve.
Detailed Description
The invention is further described in the following with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:
a molding system for piston processing, includes the frame, its characterized in that: the stamping die set comprises a rough drawing die 6, a secondary drawing die 7, a third drawing die 8 and a fourth drawing die 9 which are arranged in sequence, wherein a first stamping cavity is arranged in the rough drawing die 6, a second stamping cavity is arranged in the secondary drawing die 7, a third stamping cavity is arranged in the third drawing die 8, a fourth stamping cavity is arranged in the fourth drawing die 9, a first ejector rod arranged in the first stamping cavity, a second ejector rod arranged in the second stamping cavity, a third ejector rod arranged in the third stamping cavity and a fourth ejector rod arranged in the fourth stamping cavity are respectively arranged on the top plate 3, the upper die plate 1 is provided with a stamping rod 16 which is respectively opposite to the first stamping cavity, the second stamping cavity, the third stamping cavity and the fourth stamping cavity;
the top of the first punching cavity is provided with a tapered hole 10, and the rough drawing die 6 is used for punching the piston sheet raw material into a blank;
the secondary stretching die 7 is used for carrying out secondary stretching on the blank stretched by the rough stretching die 6;
the third stretching die 8 is used for carrying out third fine stretching on the blank stretched by the second stretching die 7;
the top of the fourth ejector rod is provided with an auxiliary die for forming a piston tail structure, and the fourth stretching die 9 is used for forming the piston tail of the blank stretched by the third stretching die 8.
Through thick drawing die 6 with sheet metal raw materials punching press drawing be tubular structure, carry out the fine drawing through secondary drawing die 7, cubic drawing die 8 and do not eliminate defects such as the inside small hollow and crackle that exist of embryo for embryo inner structure becomes even inseparable, is shaping through the structure of quartic drawing die 9 to the piston tail end, and this molding system is the multistation structure, can one-time forming, and equipment is simplified, and machining efficiency is high.
Rough drawing die 6, secondary drawing die 7, cubic drawing die 8 and quartic drawing die 9 all include outer die body 11 and interior die body 12, the interior die body 12 outside is located to outer die body 11 cover, interior die body 12 is formed through powder metallurgy sintering by the iron-based powder, be equipped with oil storage annular 13 on the outer wall of interior die body 12, be equipped with on the outer die body 11 with the oil filler point 14 of oil storage annular 13 intercommunication, the top of outer die body 11 is equipped with the clamping ring 15 that is used for axial fixity interior die body 12, be equipped with a plurality of microporous structures on the interior die body 12, a plurality of microporous structures form the oil sweetgum fruit passageway of intercommunication oil storage tank and interior die body 12 inner wall.
The compression ring 15 and the outer die body 11 can be connected through bolts, the inner die body 12 is of a structure formed by sintering through powder metallurgy, the characteristic of multiple holes can be formed, lubricating oil is filled in the oil storage ring groove 13, and an oil injection nozzle can be installed on the oil injection hole 14; in the stamping and stretching forming process of the blank with the structure, the outer wall of the blank and the stamping cavity generate heat through friction, and the pores are reduced through thermal expansion, so that lubricating oil is extruded and overflows to enter the inner wall of the stamping cavity to form an oil film, and the lubricating effect is achieved; after the stamping and stretching are finished, the stamping cavity is slowly cooled, the pores are recovered, and the lubricating oil is sucked back to the pores, so that the continuous lubricating effect is achieved, and the smoothness of the surface of the stamped and stretched molded blank can be facilitated.
The driving system comprises an oil supply pipeline 20, an oil return pipeline 21, a first Y-shaped three-position four-way valve 22, a second Y-shaped three-position four-way valve 23 and a hydraulic control one-way valve 24, wherein the first Y-shaped three-position four-way valve 22 comprises a first oil inlet P, a first working oil port A, a first working oil port B and a first oil return port T, the first hydraulic cylinder 4 comprises a first rod cavity 25 and a first rodless cavity 26, the first rod cavity 25 is communicated with the first working oil port A through a first oil path 27, the first rod cavity 26 is communicated with the first working oil port B through a second oil path 28, the one-way valve 24 is arranged on the second oil path 28, the second Y-shaped three-position four-way valve 23 comprises a second oil inlet P, a second working hydraulic control A, a second working oil port B and a second oil return port T, the second hydraulic cylinder 5 comprises a second rod cavity 29 and a second rodless cavity 30, the second rod cavity 29 is communicated with the second working oil port A through a third oil path 31, the second rodless cavity 30 is communicated with the second working oil port B through a fourth oil path 32, the fourth oil path 32 is connected with a throttle valve 33 and a first on-off valve 34 in parallel, the oil supply pipeline 20 and the oil return pipeline 21 are communicated with the first hydraulic cylinder 4 through a first Y-shaped three-position four-way valve, the oil supply pipeline 20 and the oil return pipeline 21 are communicated with the second hydraulic cylinder 5 through a second Y-shaped three-position four-way valve, a slide valve 35 is further arranged between the third oil path 31 and the fourth oil path 32, and a check valve 36 is further arranged between the oil outlet end of the slide valve 35 and the oil inlet end of the first rodless cavity 26.
Through adjusting each valve, the ejection rod is quickly pressed down, decelerated and retracted, and the upper ejection rod of the lower template 2 is quickly ejected out and retracted; through the adjustment of the slide valve 35 and the one-way valve, the first pair of first hydraulic cylinders 4 can supplement pressure in the slow-rolling process of the second hydraulic cylinder 5, so that the first hydraulic cylinders 4 and the second hydraulic cylinders 5 can jointly realize axial jacking force on accessories in the stretching forming process, and the forming effect on the tail end of the piston is better; through actuating system's control, can reduce the operating time of idle stroke, at the punching press tensile in-process, can select for use the most reasonable punching press drawing speed again through the aperture of adjusting choke valve 33, improve the shaping effect, this system can be applicable to the piston of processing different dimensions.
The driving system further comprises a PLC control unit, wherein the first Y-shaped three-position four-way valve, the second Y-shaped three-position four-way valve, the first on-off valve 34 and the slide valve 35 are controlled by the PLC control unit, and the first pressure sensor and the second pressure sensor are electrically connected with the PLC control unit.
The first pressure sensor is used for detecting pressure change of the stamping rod 16 in the stamping process and feeding back the pressure change to the PLC control unit, the second pressure sensor is used for detecting pressure change of the ejector rod in the stamping process and feeding back the pressure change to the PLC control unit, the number of the first pressure sensors corresponds to the number of the stamping rods 16, the number of the second pressure sensors corresponds to the number of the ejector rods, and the PLC control unit controls all the execution elements in a unified mode to achieve full-automatic control.
The driving system further comprises a lubricating oil liquid storage cylinder, the lubricating oil liquid storage cylinder comprises a third rod cavity 41 and a third rodless cavity 42, a return spring is arranged in the third rod cavity 41, lubricating oil is filled in the third rod cavity 41, a fifth oil path 43 used for the lubricating oil to enter and exit is further arranged on the third rod cavity 41, the fifth oil path 43 is communicated with the oil filling hole 14, a sixth oil path 44 used for the hydraulic oil to enter and exit is arranged on the third rodless cavity 42, the sixth oil path 44 is connected to the fourth oil path 32, the sixth oil path 44 is connected between the throttle valve 33 and the second rodless cavity 30, and a second on-off valve 45 is further arranged on the sixth oil path 44.
The second on-off valve 45 is also controlled by the PLC control unit, and the lubricant reservoir is used to temporarily store lubricant, and the principle thereof is as follows: when hydraulic oil is introduced into the third rodless cavity 42, the third rod-containing cavity 41 is compressed, lubricating oil enters the oil storage ring groove 13, meanwhile, because the third rod-containing cavity 41 is compressed, the pressure in the oil storage ring groove 13 is increased, the lubricating oil is easily pressed into the pores of the inner mold body 12, and meanwhile, the lubricating oil in the inner mold body 12 is easily extruded out of the inner wall of the inner mold body 12, so that the effect of sufficient lubrication is achieved; when the third rodless cavity 42 is decompressed, the third rod-containing cavity 41 is reset under the elastic force of the reset spring, and at the moment, the lubricating oil can be sucked back into the third rod-containing cavity 41 again, the pressure in the oil storage ring groove 13 is reduced, the lubricating oil overflowing to the outer wall of the die body can be sucked back into the pores of the inner die body again, and the lubricating oil can be effectively stored; by adopting the structure, during each stamping, the lubricating oil can be actively overflowed to the inner wall of the inner die body 12 through the lubricating oil liquid storage cylinder, the efficient lubricating effect is achieved, and the smoothness of the surface of the blank formed at each time can be ensured to meet the requirement.
The outer die body 11 is further provided with a pressure regulating hole, the pressure regulating hole is connected with a pressure regulating valve, the pressure regulating valve comprises an air inlet valve 51 and an air outlet valve 52 which are arranged in parallel, the air inlet valve 51 comprises a first valve core and a first spring, the first valve core and the valve port of the air inlet valve 51 are separated when air is fed, and air inlet is realized; the exhaust valve 52 includes a second valve core and a second spring for controlling the exhaust valve 52 to be closed, when exhausting, the second spring is compressed, and the second spring is separated from the valve port of the exhaust valve to realize the exhaust.
The pressure regulating hole and the pressure regulating valve can be connected through a hose, the pressure in the oil storage ring groove 13 can be changed in the movement process of the lubricating oil liquid storage cylinder, the pressure in the oil storage ring groove 13 can be regulated through the arrangement of the pressure regulating valve, namely when the pressure in the oil storage ring groove 13 is too high, the second valve core is pushed open by air pressure to realize air exhaust, and the second spring is reset after the pressure is reduced; when the pressure in the oil storage ring groove 13 is too small, the first valve core is jacked open by external air pressure to realize air inlet, and then the first valve core is reset through a second spring; the air inlet valve 51 can be connected with a filter to ensure the cleanliness of air when entering; by the arrangement of the pressure regulating valve, excessive overflow of the lubricating oil caused by excessive pressure in the oil storage ring groove 13 can be avoided.
A method of controlling a molding system for piston machining, comprising the steps of:
firstly, feeding: sequentially placing the sheet raw materials to be subjected to punch forming on a rough drawing die 6;
second, the second hydraulic cylinder 5 is pressed down rapidly: after feeding, the first Y-shaped three-position four-way valve is switched to a middle position, the second Y-shaped three-position four-way valve is switched to a right position, the first on-off valve 34 is switched to an on state, the second on-off valve 45 is in an off state, hydraulic oil in the oil supply pipeline 20 enters the second rodless cavity 30 from the second working oil port B, and the upper die plate 1 drives the stamping rod 16 to press down;
third, the second hydraulic cylinder 5 decelerates and pushes down: when any one of the first pressure sensors detects pressure, namely the stamping rod 16 collides with the sheet raw material, the first on-off valve 34 is switched to an off state, hydraulic oil in oil supply management enters the second rodless cavity 30 from the second working oil port B through the throttle valve 33, and the upper die plate 1 drives the stamping rod 16 to decelerate and press down; meanwhile, the slide valve 35 is communicated with the fourth oil path 32, and partial hydraulic oil enters the first rodless cavity 26 from the second working oil port B through the slide valve 35 and the check valve to supplement pressure to the rodless cavity; meanwhile, the second on-off valve 45 is switched to the on-off state, part of the hydraulic oil enters the third rodless cavity 42 from the second working oil port B through the throttle valve 33 and the second on-off valve 45, and the lubricating oil in the third rod cavity 41 is pressed out to the oil storage tank;
fourthly, the second hydraulic cylinder 5 retracts rapidly: when the pressure detected by the second pressure sensor is the same as the pressure detected by the first pressure sensor and is maintained for a period of time, the second Y-shaped three-position four-way valve is switched to the left position, the first on-off valve 34 is switched to the on state, the slide valve 35 is switched to the off state, the hydraulic oil in the oil supply pipeline 20 enters the second rod cavity 29 from the second working oil port a, the hydraulic oil in the second rodless cavity 30 returns to the oil return pipeline 21 through the first on-off valve 34, the second working oil port B and the second oil return port T, and the retraction of the upper die plate 1 is realized; meanwhile, the hydraulic oil in the third rodless cavity 42 returns to the oil return pipeline 21 through the first on-off valve 34, the second working oil port B and the second oil return port T under the pressure of the return spring; the pressure detected by the second pressure sensor is the same as the pressure detected by the first pressure sensor, and the pressure detected by the corresponding second pressure sensor in any group of stretching dies is the same as the pressure detected by the first pressure sensor;
fifthly, ejecting out the first hydraulic cylinder 4: when the pressure detected by the first pressure sensor disappears, the second hydraulic cylinder 5 continues to rapidly retract to reset the first Y-shaped three-position four-way valve, the hydraulic oil in the oil supply pipeline 20 enters the first rodless cavity 26 from the first working oil port B, the hydraulic oil in the first rod cavity 25 returns to the oil return pipeline 21 from the first working oil port a and the first oil return port T, and the ejection of the punched and stretched blank is realized; the manipulator respectively grabs the blank on the rough drawing die 6, the blank on the secondary drawing die 7, the blank on the tertiary drawing die 8 and the blank on the quaternary drawing die 9;
sixthly, retracting the first hydraulic cylinder 4: when the pressure detected by the second pressure sensor disappears, the first Y-shaped three-position four-way valve is switched to the left position, the hydraulic oil in the oil supply pipeline 20 enters the first rod cavity 25 from the first working oil port a, and the hydraulic oil in the first rodless cavity 26 returns to the oil return pipeline 21 from the first working oil port B and the first oil return port T, so that the return is realized;
and seventhly, placing the blank on the rough drawing die 6 onto a secondary drawing die 7 by a manipulator, placing the blank on the secondary drawing die 7 onto a tertiary drawing die 8, placing the blank on the tertiary drawing die 8 onto a quartic drawing die 9, blanking the blank on the quartic drawing die 9, returning to the step one, and repeating the steps one to seven.
The control method realizes automatic control, can keep the optimal stamping speed in the stamping and stretching process, can realize lubrication control in the stamping process and improve the final forming effect.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A molding system for piston processing, includes the frame, its characterized in that: the stamping die is characterized in that an upper die plate (1), a lower die plate (2) and a top plate (3) are sequentially arranged on the rack, a first hydraulic cylinder (4) used for driving the top plate (3) to lift, a second hydraulic cylinder (5) used for driving the upper die plate (1) to lift and a driving system used for controlling the first hydraulic cylinder (4) and the second hydraulic cylinder (5) are further arranged on the rack, a stamping module is arranged on the lower die plate (2), the stamping module comprises a rough drawing die (6), a secondary drawing die (7), a third drawing die (8) and a fourth drawing die (9) which are sequentially arranged, a first stamping cavity is arranged in the rough drawing die (6), a second stamping cavity is arranged in the secondary drawing die (7), a third stamping cavity is arranged in the third drawing die (8), a fourth stamping cavity is arranged in the fourth drawing die (9), and a first ejector rod, a second ejector rod, a third ejector rod and a fourth ejector rod are arranged in the first stamping cavity are, The upper die plate (1) is provided with a stamping rod (16) which is respectively opposite to the first stamping cavity, the second stamping cavity, the third stamping cavity and the fourth stamping cavity;
the top of the first punching cavity is provided with a tapered hole (10), and the rough drawing die (6) is used for punching the piston sheet raw material into a blank;
the secondary stretching die (7) is used for carrying out secondary stretching on the blank stretched by the rough stretching die (6);
the third stretching die (8) is used for carrying out third fine stretching on the blank stretched by the second stretching die (7);
the top of the fourth ejector rod is provided with an auxiliary die for forming a piston tail structure, and the fourth drawing die (9) is used for forming the piston tail of the blank stretched by the third drawing die (8).
2. The molding system for piston machining according to claim 1, wherein: rough drawing mould (6), secondary drawing mould (7), cubic drawing mould (8) and quartic drawing mould (9) all include outer die body (11) and interior die body (12), interior die body (12) outside is located to outer die body (11) cover, interior die body (12) are formed through powder metallurgy sintering by iron-based powder, be equipped with oil storage annular groove (13) on the outer wall of interior die body (12), be equipped with on outer die body (11) oil filler point (14) with oil storage annular groove (13) intercommunication, the top of outer die body (11) is equipped with clamping ring (15) that are used for axial fixity interior die body (12), be equipped with a plurality of microporous structure on interior die body (12), a plurality of microporous structure form the oil sweetgum fruit way of intercommunication oil storage tank and interior die body (12) inner wall.
3. The molding system for piston machining according to claim 2, wherein: the driving system comprises an oil supply pipeline (20), an oil return pipeline (21), a first Y-shaped three-position four-way valve (22), a second Y-shaped three-position four-way valve (23) and a hydraulic control one-way valve (24), wherein the first Y-shaped three-position four-way valve comprises a first oil inlet P, a first working oil port A, a first working oil port B and a first oil return port T, a first hydraulic cylinder (4) comprises a first rod cavity (25) and a first rod cavity (26), the first rod cavity (25) is communicated with the first working oil port A through a first oil way (27), the first rod cavity (26) is communicated with the first working oil port B through a second oil way (28), the hydraulic control one-way valve (24) is arranged on the second oil way (28), the second Y-shaped three-position four-way valve comprises a second oil inlet P, a second working oil port A, a second working oil port B and a second oil return port T, a second hydraulic cylinder (5) comprises a second rod cavity (29) and a second rod cavity (30), the second rod cavity (29) is communicated with the second working oil port A through a third oil path (31), the second rodless cavity (30) is communicated with the second working oil port B through a fourth oil path (32), the fourth oil path (32) is connected in parallel with a throttle valve (33) and a first on-off valve (34), the oil supply pipeline (20) and the oil return pipeline (21) are communicated with the first hydraulic cylinder (4) through a first Y-shaped three-position four-way valve, the oil supply pipeline (20) and the oil return pipeline (21) are communicated with the second hydraulic cylinder (5) through a second Y-shaped three-position four-way valve, a slide valve (35) is further arranged between the third oil path (31) and the fourth oil path (32), and a check valve (36) is further arranged between the oil outlet end of the slide valve (35) and the oil inlet end of the first rodless cavity (26).
4. A molding system for piston machining according to claim 3, wherein: the end part of the stamping rod (16) is provided with a first pressure sensor, the end parts of the first ejector rod, the second ejector rod, the third ejector rod and the fourth ejector rod are respectively provided with a second pressure sensor, the driving system further comprises a PLC control unit, the first Y-shaped three-position four-way valve, the second Y-shaped three-position four-way valve, the first on-off valve (34) and the slide valve (35) are controlled by the PLC control unit, and the first pressure sensor and the second pressure sensor are electrically connected with the PLC control unit.
5. The molding system for piston machining according to claim 4, wherein: the driving system further comprises a lubricating oil liquid storage cylinder, the lubricating oil liquid storage cylinder comprises a third rod cavity (41) and a third rodless cavity (42), a return spring is arranged in the third rod cavity (41), lubricating oil is filled in the third rod cavity (41), a fifth oil path (43) used for the lubricating oil to enter and exit is further arranged on the third rod cavity (41), the fifth oil path (43) is communicated with the oil filling hole (14), a sixth oil path (44) used for the hydraulic oil to enter and exit is arranged on the third rodless cavity (42), the sixth oil path (44) is connected to the fourth oil path (32), the sixth oil path (44) is connected between the throttling valve (33) and the second rodless cavity (30), and a second on-off valve (45) is further arranged on the second oil path (28).
6. The molding system for piston machining according to claim 5, wherein: the outer die body (11) is also provided with a pressure regulating hole, the pressure regulating hole is connected with a pressure regulating valve, the pressure regulating valve comprises an air inlet valve (51) and an air outlet valve (52) which are arranged in parallel, the air inlet valve comprises a first valve core and a first spring, the first valve core is used for controlling the opening of the air inlet valve, and when air enters, the first spring is compressed, the first valve core is separated from a valve port of the air inlet valve, so that air enters; the exhaust valve comprises a second valve core and a second spring, the second valve core and the second spring are used for controlling the exhaust valve to be closed, when the exhaust valve exhausts, the second spring is compressed, and the second valve core is separated from a valve port of the air outlet valve, so that the exhaust is realized.
7. A control method of a molding system for piston working to which the molding system according to claim 6 is applied, characterized in that: the method comprises the following steps:
firstly, feeding: sequentially placing thin plate raw materials to be subjected to punch forming on a rough drawing die (6);
secondly, the second hydraulic cylinder (5) is pressed down rapidly: after feeding, the first Y-shaped three-position four-way valve is switched to a middle position, the second Y-shaped three-position four-way valve is switched to a right position, the first on-off valve (34) is switched to an on state, the second on-off valve (45) is in an off state, hydraulic oil in the oil supply pipeline (20) enters the second rodless cavity (30) from the second working oil port B, and the upper template (1) drives the stamping rod (16) to press down;
thirdly, the second hydraulic cylinder (5) decelerates and pushes down: when any one first pressure sensor detects pressure, namely the stamping rod (16) is collided with the sheet raw material, the first on-off valve (34) is switched to an off state, hydraulic oil in oil supply management enters the second rodless cavity (30) from the second working oil port B through the throttle valve (33), and the upper template (1) drives the stamping rod (16) to decelerate and press down; meanwhile, the slide valve (35) is communicated with the fourth oil way (32), and partial hydraulic oil enters the first rodless cavity (26) from the second working oil port B through the slide valve (35) and the check valve to supplement pressure to the rodless cavity; meanwhile, the second on-off valve (45) is switched to a passage state, part of hydraulic oil enters the third rodless cavity (42) from the second working oil port B through the throttle valve (33) and the second on-off valve (45), and lubricating oil in the third rod cavity (41) is pressed out to the oil storage tank;
fourthly, the second hydraulic cylinder (5) retracts rapidly: when the pressure detected by the second pressure sensor is the same as the pressure detected by the first pressure sensor and is maintained for a period of time, the second Y-shaped three-position four-way valve is switched to the left position, the first on-off valve (34) is switched to the on state, the slide valve (35) is switched to the off state, hydraulic oil in the oil supply pipeline (20) enters the second rod cavity (29) from the second working oil port A, hydraulic oil in the second rodless cavity (30) returns to the oil return pipeline (21) through the first on-off valve (34), the second working oil port B and the second oil return port T, and the upper template (1) is retracted; meanwhile, the hydraulic oil in the third rodless cavity (42) returns to the oil return pipeline (21) through the first on-off valve (34), the second working oil port B and the second oil return port T under the pressure of the return spring;
fifthly, ejecting out the first hydraulic cylinder (4): when the pressure detected by the first pressure sensor disappears, the first Y-shaped three-position four-way valve is switched to the right position, hydraulic oil in the oil supply pipeline (20) enters the first rodless cavity (26) from the first working oil port B, hydraulic oil in the first rod cavity (25) returns to the oil return pipeline (21) from the first working oil port A and the first oil return port T, and ejection of a blank which is punched and stretched is finished is achieved; the manipulator respectively grabs the blank on the rough drawing die (6), the blank on the secondary drawing die (7), the blank on the tertiary drawing die (8) and the blank on the quaternary drawing die (9);
sixthly, retracting the first hydraulic cylinder (4): when the pressure detected by the second pressure sensor disappears, the first Y-shaped three-position four-way valve is switched to the left position, hydraulic oil in the oil supply pipeline (20) enters the first rod cavity (25) from the first working oil port A, and hydraulic oil in the first rodless cavity (26) returns to the oil return pipeline (21) from the first working oil port B and the first oil return port T, so that the return is realized;
and seventhly, placing the blank on the rough drawing die (6) onto a secondary drawing die (7) by a manipulator, placing the blank on the secondary drawing die (7) onto a tertiary drawing die (8), placing the blank on the tertiary drawing die (8) onto a quartic drawing die (9), blanking the blank on the quartic drawing die (9), simultaneously returning to the first step, and repeating the first step to the seventh step.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139414A (en) * | 2020-09-09 | 2020-12-29 | 浙江恒鼎机械有限公司 | Forging system and forging method for hub flange plate |
| CN112157940A (en) * | 2020-08-26 | 2021-01-01 | 金肯职业技术学院 | Camshaft oil seal ellipse automatic correction device and correction method |
| CN112475202A (en) * | 2020-12-02 | 2021-03-12 | 浙江巨程钢瓶有限公司 | Production system and production method of disposable cylinder valve for steel cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913086A (en) * | 2010-07-14 | 2010-12-15 | 合肥锻压机床有限公司 | Leak-free hydraulic system of mobile workbench |
| CN102310579A (en) * | 2010-07-08 | 2012-01-11 | 南通锻压设备股份有限公司 | Pressure pad device of mechanical press |
| CN102441599A (en) * | 2011-11-25 | 2012-05-09 | 永康市加效焊接自动化设备有限公司 | Multi-station and multi-time hydraulic drawing press and processing method thereof |
| CN203155855U (en) * | 2013-03-11 | 2013-08-28 | 苏州宝成汽车冲压有限公司 | Automatic oil adding device for stretching die |
| CN104117589A (en) * | 2014-07-24 | 2014-10-29 | 湖南农业大学 | Automatic-lubricating drawing die |
| CN110355253A (en) * | 2019-08-28 | 2019-10-22 | 东莞市鼎通精密五金股份有限公司 | A kind of die device for saving punching oil |
-
2020
- 2020-04-30 CN CN202010362944.9A patent/CN111531012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310579A (en) * | 2010-07-08 | 2012-01-11 | 南通锻压设备股份有限公司 | Pressure pad device of mechanical press |
| CN101913086A (en) * | 2010-07-14 | 2010-12-15 | 合肥锻压机床有限公司 | Leak-free hydraulic system of mobile workbench |
| CN102441599A (en) * | 2011-11-25 | 2012-05-09 | 永康市加效焊接自动化设备有限公司 | Multi-station and multi-time hydraulic drawing press and processing method thereof |
| CN203155855U (en) * | 2013-03-11 | 2013-08-28 | 苏州宝成汽车冲压有限公司 | Automatic oil adding device for stretching die |
| CN104117589A (en) * | 2014-07-24 | 2014-10-29 | 湖南农业大学 | Automatic-lubricating drawing die |
| CN110355253A (en) * | 2019-08-28 | 2019-10-22 | 东莞市鼎通精密五金股份有限公司 | A kind of die device for saving punching oil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112157940A (en) * | 2020-08-26 | 2021-01-01 | 金肯职业技术学院 | Camshaft oil seal ellipse automatic correction device and correction method |
| CN112139414A (en) * | 2020-09-09 | 2020-12-29 | 浙江恒鼎机械有限公司 | Forging system and forging method for hub flange plate |
| CN112475202A (en) * | 2020-12-02 | 2021-03-12 | 浙江巨程钢瓶有限公司 | Production system and production method of disposable cylinder valve for steel cylinder |
| CN112475202B (en) * | 2020-12-02 | 2022-09-23 | 浙江巨程钢瓶有限公司 | Production system and production method of disposable cylinder valve for steel cylinder |
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