CN116078990A - Device and method for improving precision of precision die forging press by intelligent temperature control - Google Patents
Device and method for improving precision of precision die forging press by intelligent temperature control Download PDFInfo
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- CN116078990A CN116078990A CN202310071424.6A CN202310071424A CN116078990A CN 116078990 A CN116078990 A CN 116078990A CN 202310071424 A CN202310071424 A CN 202310071424A CN 116078990 A CN116078990 A CN 116078990A
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- 238000005242 forging Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 179
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/08—Making machine elements axles or shafts crankshafts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to the manufacturing industry of high-end equipment, in particular to an intelligent temperature control device and method for improving precision of a precision die forging press, comprising a crank shaft diameter cooling circulation system, a connecting rod shoe cooling circulation system and a synchronous intelligent precision air cooling temperature control system, wherein the crank shaft diameter and the connecting rod shoe cooling circulation system directly perform precision cooling action on a crank shaft diameter far away from the shaft center and a heating source corresponding to a lower connecting rod shoe in high-frequency precision die forging operation by utilizing a cold air circulation channel arranged at the center of a shaft end and a connecting rod; the intelligent accurate temperature control system utilizes a temperature sensor, an air cooler, an electromagnetic valve and a PLC controller to synchronously and intelligently control the temperature rise of the intelligent temperature control system, and the purpose of reducing the thermal quantity in a bidirectional way to reduce the fit clearance between a shaft and a shoe is achieved, so that the intelligent temperature control system has the intelligent manufacturing characteristics of remarkably improving the operation precision, efficiency and reliability of a transmission system, the product precision is improved by more than 1 time compared with the national standard, the rotation speed is improved by 60-70%, the service life of a connecting rod shoe is prolonged by more than 50%, and the technical problems of the precision and the efficiency improvement of die forging are fundamentally solved.
Description
Technical field:
the invention relates to the technical field of metal forming machine tool equipment manufacturing in the field of intelligent manufacturing of high-end equipment, in particular to a device and a method for improving precision of a precision die forging press by intelligent temperature control.
The background technology is as follows:
at present, the structure of the existing mechanical press is shown in fig. 8-9, and the existing mechanical press comprises a machine body, wherein mounting through holes are formed in two sides of the upper portion of the machine body, supporting sleeves are respectively arranged in the mounting through holes, the supporting sleeves are fixed on the machine body through bolts, bearing bushes are arranged in the supporting sleeves, crankshafts are arranged in the bearing bushes, connecting rod tiles are arranged on the outer sides of crank throws in the middle of the crankshafts, connecting rod tiles are arranged in connecting rod covers and connecting rod holes, the connecting rod tiles, the connecting rod covers and the connecting rods are fixed together through double-head screws and nuts, and the connecting rod, the connecting rod covers and the connecting rod tiles reciprocate up and down along with rotation of the crankshafts.
The crankshaft, the bearing bush and the connecting rod bush form a sliding friction pair to rotate relatively, the crankshaft and the connecting rod bush are subjected to relative rotation under the action of a working force to extrude friction, so that the temperature of a crank shaft diameter of the crankshaft and the temperature of the connecting rod bush are continuously increased, the crank shaft diameter is heated and then expanded outwards, the shaft diameter is thickened, the diameter of the connecting rod bush is reduced due to the fact that the connecting rod bush is heated and expanded inwards, and as a result, the fit clearance between the crank shaft diameter and the connecting rod bush is gradually reduced, and on one hand, the improvement of the fit precision and the rotation speed of a transmission system of a precise die forging press is severely restricted; on the other hand, the quick abrasion, damage or locking shutdown accidents of the crank throw and the connecting rod shoe can be caused. However, the mechanical press with lower crankshaft rotation speed or low precision performance index requirement basically can meet the requirement, but the high-speed, precise die forging press and the automatic production line thereof can not meet the high-speed, precise operation, stability and reliability of the mechanical press.
With the continuous innovation of the technology, some technical problems are primarily improved, but through the discovery of practical application effects, further application of basic research is needed to seek breakthrough, for example, wen Shengre expansion problem of a crankshaft (crank) is solved, the key technical restriction of neck clamping of the oil cooling patent technology of an international like product is overcome only by intelligent temperature control of cold air outside a connecting rod shoe, but the integral intelligent temperature control effect of the crank and the connecting rod shoe is not ideal, so that the further effective improvement of the precision and the rotation speed (efficiency) of a transmission system (fit clearance) of the crankshaft and the connecting rod shoe is severely restricted. Therefore, the creation of an intelligent temperature rise control system for the crank throw and the connecting rod bush of the precise die forging press is still a key technical problem which is urgent to solve in the aspect of intelligent manufacturing and is still to restrict the performance of the current high-speed precise metal forming intelligent die forging equipment to be greatly improved.
The foregoing is not necessarily a prior art, and falls within the technical scope of the inventors.
The invention comprises the following steps:
the invention aims to solve the problems in the prior art, and provides a device and a method for improving the precision of a precision die forging press by intelligent temperature control, which have the advantages of reasonable structural design, synchronous cooling of a crank shaft diameter and a connecting rod shoe, obvious effect of accurate intelligent temperature control, obvious temperature control, prolonged service life of the bearing bush, and remarkable improvement of the precision, efficiency and reliability of the whole press.
The invention realizes the aim by adopting the following technical scheme:
intelligent temperature control promotes accurate die forging press precision device, includes:
the crank shaft diameter cooling circulation system comprises a plurality of cooling holes axially arranged on one side of the crank shaft diameter far away from the axis of the crank shaft, wherein the left end of each cooling hole is connected with a first cold air deflector arranged on the crank shaft, the right end of each cooling hole is connected with a second cold air deflector arranged on the crank shaft, a first exhaust hole is arranged on each second cold air deflector, all the cooling holes are communicated in series in an S shape, a first cooling air inlet hole is axially arranged on the crank shaft, a first cooling air vent is radially arranged on the crank shaft, one end of each first cooling air vent is communicated with the first cooling air inlet hole, the other end of each first cooling air vent is connected with the corresponding first cold air deflector, and a rotary joint connected with the corresponding first cooling air inlet hole is arranged at the end of the crank shaft;
the connecting rod tile cooling circulation system comprises a connector arranged on the side wall of the connecting rod, a second cooling air inlet hole communicated with the connector is arranged in the connecting rod, a circulating cooling channel is arranged between the lower half part of the connecting rod tile and the connecting rod, one end of the circulating cooling channel is communicated with the second cooling air inlet hole, and the other end of the circulating cooling channel is connected with a second exhaust hole;
the utility model provides a synchronous accurate forced air cooling temperature control system for give crank axle diameter and connecting rod tile cooling simultaneously, including setting up the forced air cooling machine on the fuselage, the forced air cooling machine is connected with the solenoid valve, the solenoid valve passes through the air-supply line and is connected with rotary joint and joint respectively, be equipped with the temperature sensor who is used for detecting connecting rod tile temperature on the connecting rod, temperature sensor is connected with the PLC controller, the PLC controller is connected with forced air cooling machine and solenoid valve respectively.
The two ends of one side of the crank, which is far away from the axis of the crankshaft, are respectively provided with a mounting groove, and the mounting groove is provided with a first cold air deflector or a second cold air deflector.
All the cooling holes are arranged at intervals along the circumferential direction of the crank shaft diameter.
The connecting rod is provided with a connecting rod hole for installing a connecting rod tile, a plurality of axially arranged circulating cooling channel grooves A are formed in the lower half part of the inner wall of the connecting rod hole at intervals along the circumferential direction, a communicating groove A for communicating two adjacent circulating cooling channel grooves A is formed in one side of the lower half part of the inner wall of the connecting rod hole, a communicating groove B for communicating the two adjacent circulating cooling channel grooves A is formed in the other side of the lower half part of the inner wall of the connecting rod hole, all circulating cooling channel grooves A are communicated in series in the communicating groove A and the communicating groove B, a second exhaust hole is formed in the lower half part of the inner wall of the connecting rod hole, a second cooling air inlet hole is communicated with the circulating cooling channel groove A at the beginning end, the circulating cooling channel groove A at the tail end is communicated with a second exhaust hole, and the communicating groove A, the circulating cooling channel groove A and the communicating groove B are matched with the outer wall of the connecting rod tile to form a closed circulating cooling channel;
or, be equipped with a plurality of axial cooling channel groove B that set up along the circumferencial direction interval on the connecting rod tile lower half outer wall, one side is equipped with the intercommunication groove C with two adjacent cooling channel groove B intercommunication on the connecting rod tile lower half outer wall, and the opposite side is equipped with the intercommunication groove D with two adjacent cooling channel groove B intercommunication, intercommunication groove C and intercommunication groove D are S-shaped series connection intercommunication with all cooling channel groove B, the second exhaust hole sets up on the connecting rod tile lower half outer wall, the second cooling fresh air inlet communicates with cooling channel groove B that is located the top, cooling channel groove B and the second exhaust hole intercommunication that is located the end, intercommunication groove C, cooling channel groove B and intercommunication groove D and connecting rod hole inner wall cooperation form confined cooling channel.
The second cooling air inlet hole comprises an axial section and a radial section which are communicated.
The temperature sensor is arranged on one side of the connecting rod close to the circulating cooling channel, and the front end of the temperature sensor is arranged at the connecting rod tile.
The intelligent temperature control method for improving precision of the precision die forging press comprises the intelligent temperature control device for improving precision of the precision die forging press, when the temperature measured by a temperature sensor reaches a set value, a PLC (programmable logic controller) controls an air cooler and an electromagnetic valve to start to work so as to respectively convey cold air into a crank shaft path cooling circulation system and a connecting rod tile cooling circulation system to achieve rapid intelligent temperature control, the temperature, flow and flow rate of the cold air can be intelligently regulated and controlled according to system set parameters, the cold air in the crank shaft path cooling circulation system passes through a rotary joint, a first cooling air inlet hole, a first cooling air outlet hole and a first cold air deflector to directly cool a heating source of a crank shaft path, finally the cold air in the connecting rod tile cooling circulation system passes through the joint and a second cooling air inlet hole to directly cool the heating source of the connecting rod tile, and finally the cold air in the connecting rod tile cooling circulation system passes through the second cooling air inlet hole to be discharged so as to enable the circulating cold air to flow rapidly; when the temperature measured by the temperature sensor is recovered to be within the normal set numerical range, the PLC controller controls the air cooler and the electromagnetic valve to stop working.
By adopting the technical scheme, the invention can bring the following beneficial effects:
in consideration of important influencing factors of temperature rise on the matching precision of a transmission system of a precise die forging press, based on theoretical application research of temperature control, a gas circuit temperature control and temperature detection control integrated technology system under the intelligent temperature control of the precise die forging is established, an innovative structural design and a PLC control integrated technology are combined, a temperature data acquisition, data analysis, active early warning and advanced intervention mode is adopted, cold air is used as cheapest cooling media, during operation, the start-stop, flow speed and temperature of each gas outlet are controlled and adjusted by combining an upper frequency conversion speed regulation air cooler of a machine body and an electromagnetic valve with an intelligent cooling system, the cold air is input into a crank shaft path of a crank shaft and a connecting rod tile cold air circulation channel matched with the crank shaft path to directly act, so that the crank shaft and the connecting rod tile cold air circulation channel are completely in a direct contact state, the intelligent rapid and accurate cooling of the comprehensive system can be provided, the thermal temperature rise of high-speed motion under the high-frequency die forging operation is reduced, the change range of the crank and the temperature rise of the connecting rod tile is reduced, the restriction of the thermal temperature rise on the improvement of precision efficiency of the precise hot die forging transmission link is remarkably improved, and the matching precision and the crank and the rotation speed of the crank and connecting rod tile are remarkably improved through structural innovative design. The temperature rise of the copper bush in the prior art (national standard) is generally 40 ℃, the highest temperature is not more than 70 ℃, the experiment and simulation prediction prove that the innovative intelligent temperature control system technology effectively controls the temperature rise range of the high-speed rotary connecting rod bush within 5-20 ℃, the highest temperature is not more than 40 ℃, the ratio of the rotary motion clearance of the crank shaft diameter to the shaft diameter of the connecting rod bush is optimally reduced to 3-4/1000000 from 8-10/1000000 in the prior art, the product precision is improved by more than 1 time than the national standard, the crankshaft rotation speed is improved by 60-70%, the precision, the efficiency and the reliability of the precise die forging complete machine are obviously improved, and the service life of the connecting rod bush is prolonged by more than 50%.
Description of the drawings:
FIG. 1 is a schematic diagram of an intelligent temperature control precision lifting device for a precision die forging press according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is a schematic top view of a connecting rod hole according to embodiment 1 of the present invention;
FIG. 4 is a side view of the intelligent temperature control precision raising device for a precision die forging press according to embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of an intelligent temperature control precision raising device for a precision die forging press according to embodiment 2 of the present invention;
FIG. 6 is an enlarged view of part B of FIG. 5;
FIG. 7 is a bottom view of a connecting rod shoe of embodiment 2 of the present invention;
FIG. 8 is a schematic view of a conventional precision forging press;
FIG. 9 is a side view of a prior art precision swage press;
in the figure, 1, a crank, 2, a crankshaft, 3, a cooling hole, 4, a first cold air deflector, 5, a second cold air deflector, 6, a first exhaust hole, 7, a first cooling air inlet hole, 8, a first cooling air vent, 9, a rotary joint, 10, a connecting rod, 11, a joint, 12, a second cooling air inlet hole, 13, a connecting rod shoe, 14, a circulating cooling channel, 15, a second exhaust hole, 16, a machine body, 17, an air cooler, 18, an electromagnetic valve, 19, an air inlet pipe, 20, a temperature sensor, 21, a mounting groove, 22, a connecting rod hole, 23, a circulating cooling channel groove A,24, a communication groove A,25, a communication groove B,26, a circulating cooling channel groove B,27, a communication groove C,28 and a communication groove D.
The specific embodiment is as follows:
in order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
In the present invention, the terms "axial", "radial", "circumferential", "end", "a", "B", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the location of the indicated technical feature.
In the present invention, unless explicitly stated and limited otherwise, the terms "provided," "configured," "connected," and the like are to be construed broadly, and for example, "provided" and "configured" may be fixedly mounted, removably mounted, or integrally formed; "coupled" may be directly connected or connected via an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1-4, the intelligent temperature control precision device for improving precision die forging press comprises:
the crank shaft diameter cooling circulation system comprises a plurality of cooling holes 3 axially arranged on one side of the crank shaft diameter of the crank shaft 1 far away from the axis of the crank shaft 2, wherein the left end of each cooling hole 3 is connected with a first cold air deflector 4 arranged on the crank shaft 1, the right end of each cooling hole is connected with a second cold air deflector 5 arranged on the crank shaft 1, a first exhaust hole 7 is arranged on each second cold air deflector 5, the first exhaust holes 7 are directly communicated with the external environment, a first cooling air inlet hole 8 is axially formed in the crank shaft 2, a first cooling air vent 9 is radially formed in the crank shaft 1, one end of each first cooling air vent 9 is communicated with the corresponding first cooling air inlet hole 8, the other end of each first cooling air vent 9 is connected with the corresponding first cold air deflector 4, and a rotary joint 9 connected with the corresponding first cooling air inlet hole 7 is arranged at the end of the crank shaft 2;
the connecting rod tile cooling circulation system comprises a connector 11 arranged on the side wall of a connecting rod 10, a second cooling air inlet hole 12 communicated with the connector 11 is arranged in the connecting rod 10, a circulating cooling channel 14 is axially arranged between the lower half part of the connecting rod tile 13 and the connecting rod 10, one end of the circulating cooling channel 14 is communicated with the second cooling air inlet hole 12, and the other end of the circulating cooling channel is connected with a second exhaust hole 15; in the die forging process of the precision die forging press, when the connecting rod 10 moves up and down repeatedly to a nominal pressure angle close to the bottom dead center, the lower part of the connecting rod shoe 13 starts to be acted by extrusion force, the shaft diameter of the crank throw 1 far from the center position at the position close to the bottom dead center is increased with the specific pressure of the sliding surface at the lower part of the connecting rod shoe 13, and the shaft diameter of the crank throw 1 and the connecting rod shoe 13 at the position are actually tested to be the friction heating sources. The key technical problem of restraining the precision and efficiency improvement of the transmission system of the precision die forging press by breaking is how to synchronously control the temperature rise of the whole system of the crank 1 shaft diameter and the connecting rod bush 13. Based on basic research of temperature rise theory application, the increment of thermal deformation of metal every 1 ℃ is 1/100000, and the thermal temperature rise directly influences the clearance of the precision die forging press transmission system, so that the result of the superposition of the inner hole shrinkage of the temperature rise of the connecting rod shoe 13 and the thickness rising of the shaft diameter temperature rise of the crank 1 is included, therefore, only aiming at a heating source, the novel structural design is carried out by means of intelligent temperature control application theory, the thermal temperature rise of the heating source rotating at high speed under high-frequency forging operation is accurately controlled, the thermal variable is reduced by synchronously controlling the temperature rise range from the shaft diameter of the crank 1 and the connecting rod shoe 13 of the crankshaft 2, the clearance is reserved by the clearance of the cooperation of the shaft diameter of the crank 1 and the connecting rod shoe 13, the precision and the rotation speed of the crank 1 and the connecting rod shoe 13 are rapidly, accurately and effectively improved, and the key technical problems of limiting the precision and the efficiency of the precision die forging press transmission system are fundamentally solved.
The synchronous intelligent accurate air-cooling temperature control system is used for simultaneously cooling a shaft diameter of a crank throw 1 and a connecting rod tile 13, and comprises an air cooler 17 arranged on a machine body 16, wherein the air cooler 17 is connected with an electromagnetic valve 18, the electromagnetic valve 18 is respectively connected with a rotary joint 9 and a joint 11 through an air inlet pipe 19, a temperature sensor 20 used for detecting the temperature of the connecting rod tile 13 is arranged on a connecting rod 10, the temperature sensor 20 is connected with a PLC controller, and the PLC controller is respectively connected with the air cooler 17 and the electromagnetic valve 18. In consideration of important influencing factors of temperature rise on the matching precision of a transmission system of a precision die forging press, based on application research of temperature control basic theory, a gas circuit temperature control and temperature detection control integrated technology system under intelligent temperature control of precision hot die forging is established, an innovative structural design and PLC control integrated technology is combined, a temperature data acquisition, data analysis, active early warning and early intervention mode is adopted, cold air is used as the cheapest medium for cooling, during operation, the start-stop, flow rate and temperature of each gas outlet are controlled and adjusted by combining an intelligent cooling system through setting optimized parameters by a machine body up-conversion speed regulation air cooler 17 and an electromagnetic valve 18, the direct action of cold air input crankshaft 2 crank 1 shaft diameter and a cold air circulation channel of a matched connecting rod bush 13 is realized, the intelligent quick and accurate cooling of the comprehensive system can be provided, the thermal temperature rise of high-speed motion under high-frequency operation is reduced, the temperature rise change range of the crank 1 shaft diameter and the connecting rod bush 13 is reduced, the precision efficiency of the precision forging transmission link is improved, and the matching precision and the rotation speed of the crank 1 and the connecting rod bush 13 are remarkably improved through structural innovative design. The common temperature rise of the copper tiles in the prior art (national standard) is 40 ℃, the highest temperature is not more than 70 ℃, the experiment and simulation prediction prove that the innovative intelligent temperature control system technology effectively controls the temperature rise range of the high-speed rotating connecting rod tiles within 5-20 ℃, the highest temperature is not more than 40 ℃, the ratio of the rotary motion clearance of the shaft diameter of the connecting rod shoe 13 and the crank 1 to the shaft diameter is optimally reduced from 8-10/1000000 in the prior art to 3-4/1000000, the product precision is improved by more than 1 time compared with the national standard, the rotation speed of the crankshaft 1 is improved by 60-70%, the precision, the efficiency and the reliability of the precise die forging complete machine are obviously improved, and the service life of the connecting rod shoe 13 is prolonged by more than 50%.
The two ends of one side of the crank 1 far away from the axis of the crankshaft 2 are respectively provided with a mounting groove 21, and the mounting groove 21 is provided with a first cold air deflector 4 or a second cold air deflector 5. The cold air deflector is installed by designing the installation groove 21 on the crank, and the cooling of the shaft diameter heat generating source of the crank 1 is realized by matching the cold air deflector with the cooling hole 3.
All the cooling holes 3 are arranged at intervals along the circumferential direction of the bell crank 1. And cooling the heating source.
The connecting rod 10 is provided with a connecting rod hole 22 for installing the connecting rod tile 13, a plurality of axially arranged circulating cooling channel grooves A23 are formed in the lower half part of the inner wall of the connecting rod hole 22 at intervals along the circumferential direction, one side of the lower half part of the inner wall of the connecting rod hole 22 is provided with a communicating groove A24 for communicating two adjacent circulating cooling channel grooves A23, the other side of the lower half part of the inner wall of the connecting rod hole 22 is provided with a communicating groove B25 for communicating the two adjacent circulating cooling channel grooves A23, the communicating groove A24 and the communicating groove B25 are used for communicating all circulating cooling channel grooves A23 in series in an S shape, the second cooling air inlet hole 12 is communicated with the circulating cooling channel groove A23 at the beginning, the second exhaust hole 15 is formed in the lower half part of the inner wall of the connecting rod hole 22, the circulating cooling channel groove A23 at the tail end is communicated with the second exhaust hole 1515, and the second exhaust hole 15 is formed in the connecting rod 10, and the communicating groove A24, the circulating cooling channel A23 and the communicating groove B25 are matched with the outer wall of the connecting rod tile 13 to form a closed circulating cooling channel 14. A specific molding mode of the circulation cooling channel 14 is given by machining the communication groove a24, the circulation cooling channel groove a23 and the communication groove B25 on the lower half of the inner wall of the connecting rod hole 22.
The second cooling inlet 12 comprises an axial section and a radial section in communication. The cold air is delivered into the circulation cooling channel 14.
The temperature sensor 20 is arranged on one side of the connecting rod 10 close to the circulating cooling channel 14, and the front end of the temperature sensor 20 is arranged at the connecting rod shoe 13. The temperature detection is carried out on the heating source, the temperature rise condition can be truly reflected, and an accurate basis is provided for rapid and accurate cooling.
Example 2
This embodiment differs from embodiment 1 in that:
as shown in fig. 5-7, a plurality of axially arranged circulating cooling channel grooves B26 are formed in the outer wall of the lower half of the connecting rod tile 13 at intervals along the circumferential direction, a communication groove C27 for communicating two adjacent circulating cooling channel grooves B26 is formed in one side of the outer wall of the lower half of the connecting rod tile 13, a communication groove D28 for communicating two adjacent circulating cooling channel grooves B26 is formed in the other side of the outer wall of the lower half of the connecting rod tile 13, all circulating cooling channel grooves B26 are communicated in series in an S shape by the communication groove C27 and the communication groove D28, the second exhaust hole 15 is formed in the outer wall of the lower half of the connecting rod tile 13, the second cooling air inlet hole 12 is communicated with the circulating cooling channel groove B at the beginning, the circulating cooling channel groove B26 at the end is communicated with the second exhaust hole 15, the second exhaust hole 15 is formed in the connecting rod tile 13, and the communication groove C27, the circulating cooling channel B26 and the communication groove D28 are matched with the inner wall of the connecting rod hole 22 to form a closed circulating cooling channel 14. Another way of forming the circulation cooling channel 14 is given by machining the communication groove C27, the circulation cooling channel groove B26 and the communication groove D28 on the outer wall of the lower half of the connecting rod shoe 13.
The intelligent temperature control method for improving precision of the precision die forging press comprises the intelligent temperature control device for improving precision of the precision die forging press, when the temperature measured by the temperature sensor 20 reaches a set value, the PLC controller controls the air cooler 17 and the electromagnetic valve 18 to start to work so as to respectively convey cold air into the crank shaft path cooling circulation system and the connecting rod tile cooling circulation system to achieve rapid intelligent temperature control, the temperature, the flow speed and the flow of the cold air can be intelligently regulated and controlled according to system set parameters, the cold air in the crank shaft path cooling circulation system enters the cooling hole 3 through the rotary joint 9, the first cooling air inlet hole 7, the first cooling air outlet hole 8 and the first cold air deflector 4 to directly cool the heating source of the crank shaft path, finally, the circulating cold air is discharged through the first air outlet hole 6 to enable the circulating cold air to flow rapidly, the cold air in the connecting rod tile cooling circulation system enters the circulating cooling channel 14 through the joint 11 and the second cooling air inlet hole 12 to directly cool the heating source of the connecting rod tile 13, and finally, the cold air is discharged through the second air outlet hole 15 to enable the circulating cold air to flow rapidly; when the temperature measured by the temperature sensor 20 is recovered to be within the normal set value range, the PLC controller controls the air cooler 17 and the electromagnetic valve 18 to stop working. The intelligent and accurate air-cooling temperature control effect of the whole synchronous start and stop of the crank 1 shaft diameter and the connecting rod bush 13 is achieved.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (7)
1. Intelligent temperature control promotes accurate die forging press precision device, its characterized in that includes:
the crank shaft diameter cooling circulation system comprises a plurality of cooling holes axially arranged on one side of the crank shaft diameter far away from the axis of the crank shaft, wherein the left end of each cooling hole is connected with a first cold air deflector arranged on the crank shaft, the right end of each cooling hole is connected with a second cold air deflector arranged on the crank shaft, all the cooling holes are communicated in series in an S shape, a first exhaust hole is arranged on each second cold air deflector, a first cooling air inlet hole is axially arranged on the crank shaft, a first cooling air vent is radially arranged on the crank shaft, one end of each first cooling air vent is communicated with the corresponding first cooling air inlet hole, the other end of each first cooling air vent is connected with the corresponding first cold air deflector, and a rotary joint connected with the corresponding first cooling air inlet hole is arranged at the end of the crank shaft;
the connecting rod tile cooling circulation system comprises a connector arranged on the side wall of the connecting rod, a second cooling air inlet hole communicated with the connector is arranged in the connecting rod, a circulating cooling channel is axially arranged between the lower half part of the connecting rod tile and the connecting rod, one end of the circulating cooling channel is communicated with the second cooling air inlet hole, and the other end of the circulating cooling channel is connected with a second exhaust hole;
the utility model provides a synchronous accurate forced air cooling temperature control system for give crank axle diameter and connecting rod tile cooling simultaneously, including setting up the forced air cooling machine on the fuselage, the forced air cooling machine is connected with the solenoid valve, the solenoid valve passes through the air-supply line and is connected with rotary joint and joint respectively, be equipped with the temperature sensor who is used for detecting connecting rod tile temperature on the connecting rod, temperature sensor is connected with the PLC controller, the PLC controller is connected with forced air cooling machine and solenoid valve respectively.
2. The intelligent temperature control lifting precision die forging press precision device according to claim 1, wherein mounting grooves are respectively formed in two ends of one side of the crank, which is far away from the axis of the crankshaft, and a first cold air deflector or a second cold air deflector is arranged on each mounting groove.
3. The intelligent temperature control lifting precision die forging press precision device according to claim 2, wherein all the cooling holes are arranged at intervals along the circumferential direction of the bell crank.
4. The intelligent temperature control lifting precision die forging press precision device according to claim 1 or 3, wherein a connecting rod hole for installing a connecting rod shoe is formed in the connecting rod, a plurality of axially arranged circulating cooling channel grooves A are formed in the lower half part of the inner wall of the connecting rod hole at intervals along the circumferential direction, a communicating groove A for communicating two adjacent circulating cooling channel grooves A is formed in one side of the lower half part of the inner wall of the connecting rod hole, a communicating groove B for communicating the two adjacent circulating cooling channel grooves A is formed in the other side of the lower half part of the inner wall of the connecting rod hole, all circulating cooling channel grooves A are communicated in series in an S shape, a second cooling air inlet hole is communicated with the circulating cooling channel groove A at the beginning end, a second exhaust hole is formed in the lower half part of the inner wall of the connecting rod hole, and the communicating groove A, the circulating cooling channel groove A and the communicating groove B are matched with the outer wall of the connecting rod shoe to form a closed circulating cooling channel;
or, be equipped with a plurality of axial cooling channel groove B that set up along the circumferencial direction interval on the connecting rod tile lower half outer wall, one side is equipped with the intercommunication groove C with two adjacent cooling channel groove B intercommunication on the connecting rod tile lower half outer wall, and the opposite side is equipped with the intercommunication groove D with two adjacent cooling channel groove B intercommunication, intercommunication groove C and intercommunication groove D are S-shaped series connection intercommunication with all cooling channel groove B, the second exhaust hole sets up on connecting rod tile lower half outer wall, second cooling fresh air inlet communicates with cooling channel groove A that is located the top, cooling channel groove B and the second exhaust hole intercommunication that is located the end, intercommunication groove C, cooling channel groove B and intercommunication groove D and connecting rod hole inner wall cooperation form confined cooling channel.
5. The intelligent temperature-controlled lifting precision die forging press precision apparatus of claim 4, wherein the second cooling air inlet comprises an axial section and a radial section that are in communication.
6. The intelligent temperature-controlled precision-raising device for precision die forging presses according to claim 5, wherein the temperature sensor is arranged on one side of the connecting rod close to the circulating cooling channel, and the front end of the temperature sensor is arranged at the connecting rod tile.
7. The intelligent temperature control precision lifting method for the precision die forging press is characterized by comprising the intelligent temperature control precision lifting device for the precision die forging press, wherein when the temperature measured by a temperature sensor reaches a set value, a PLC (programmable logic controller) controls an air cooler and an electromagnetic valve to start to work so as to respectively convey cold air into a crank shaft diameter cooling circulation system and a connecting rod tile cooling circulation system to achieve quick intelligent temperature control, the temperature, the flow rate and the flow rate of the cold air can be intelligently regulated and controlled according to system set parameters, the cold air in the crank shaft diameter cooling circulation system passes through a rotary joint, a first cooling air inlet hole, a first cooling air outlet hole and a first cold air deflector to directly cool a crank shaft diameter heating source, and finally the cold air is discharged through a first exhaust hole so as to enable circulating cold air to flow quickly, and finally the cold air in the connecting rod tile cooling circulation system passes through the joint and a second cooling air inlet hole to directly cool the heating source of the connecting rod tile, and finally the cold air is discharged through the second exhaust hole so as to enable the circulating cold air to flow quickly; when the temperature measured by the temperature sensor is recovered to be within the normal set numerical range, the PLC controller controls the air cooler and the electromagnetic valve to stop working.
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| CN202310071424.6A CN116078990B (en) | 2023-01-17 | 2023-01-17 | Device and method for improving precision of precision die forging press by intelligent temperature control |
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| CN202310071424.6A CN116078990B (en) | 2023-01-17 | 2023-01-17 | Device and method for improving precision of precision die forging press by intelligent temperature control |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201745207U (en) * | 2010-07-23 | 2011-02-16 | 宁波市泰易达精密机械有限公司 | Crankshaft cooling device of high-speed mechanical press |
| CN107097452A (en) * | 2017-07-03 | 2017-08-29 | 荣成华东锻压机床股份有限公司 | Mechanical pressure machine crankshaft, bearing shell temperature rise automaton |
| CN113290928A (en) * | 2021-05-24 | 2021-08-24 | 荣成华东锻压机床股份有限公司 | Accurate temperature control device and method for crankshaft bearing bush of mechanical press |
-
2023
- 2023-01-17 CN CN202310071424.6A patent/CN116078990B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201745207U (en) * | 2010-07-23 | 2011-02-16 | 宁波市泰易达精密机械有限公司 | Crankshaft cooling device of high-speed mechanical press |
| CN107097452A (en) * | 2017-07-03 | 2017-08-29 | 荣成华东锻压机床股份有限公司 | Mechanical pressure machine crankshaft, bearing shell temperature rise automaton |
| CN113290928A (en) * | 2021-05-24 | 2021-08-24 | 荣成华东锻压机床股份有限公司 | Accurate temperature control device and method for crankshaft bearing bush of mechanical press |
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| CN116078990B (en) | 2023-09-15 |
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Effective date of registration: 20240223 Address after: No.59 Xingye Road, Rongcheng City, Weihai City, Shandong Province, 264300 Patentee after: RONGCHENG HUADONG METAL-FORMING MACHINERY CO.,LTD. Country or region after: China Patentee after: Weihai Andi Intelligent Technology Co.,Ltd. Patentee after: CENTRAL SOUTH University Patentee after: Jinan casting and forging Institute inspection and Testing Technology Co.,Ltd. Address before: No.59 Xingye Road, Rongcheng City, Weihai City, Shandong Province, 264300 Patentee before: RONGCHENG HUADONG METAL-FORMING MACHINERY CO.,LTD. Country or region before: China Patentee before: Weihai Andi Intelligent Technology Co.,Ltd. Patentee before: CENTRAL SOUTH University Patentee before: Jinan casting and forging Institute inspection and Testing Technology Co.,Ltd. Patentee before: Rongcheng Science and Technology Innovation Development Center |
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