An automated flange forging production system based on intelligent manufacturing

Abstract

The present invention relates to the field of flange forging technology, and in particular to an automated flange forging production system based on intelligent manufacturing, comprising: a forging module for forging flange raw materials into finished flanges; a detection module connected to the forging module, comprising a temperature sensor connected to the heating furnace for detecting the temperature in the heating furnace, a vibration sensor connected to the forging machine for detecting the vibration intensity of the forging machine, and a thickness sensor arranged at the output end of the forging machine for detecting the thickness of the finished flange; a control module, which is respectively connected to the forging module and the detection module, for determining whether the production stability of the flange forging meets the requirements according to the variance of the temperature fluctuation amplitude in the heating furnace, and when the production stability does not meet the requirements, adjusting the opening of the airflow valve in the heating furnace. The present invention achieves the improvement of the production stability of flange forging.

Description

Technical Field

[0001] The present invention relates to the technical field of flange forging, and in particular to an automated flange forging production system based on intelligent manufacturing. Background Art

[0002] In the prior art, flange connection is a kind of joint between pipes, and also a connection method, which mainly fixes two pipes, pipe fittings or equipment on a flange plate respectively, then adds a flange gasket between the two flange plates, and then uses bolts to tightly connect the two flanges. Traditional die forging usually uses forging equipment such as die forging hammers, hot die forging presses, flat forging machines and friction presses. Compared with free forging, it has high dimensional accuracy and can be used to make more complex shapes, but it usually needs to cut off the flash, the material utilization rate of the billet making process is low, and the production efficiency is also average.

[0003] China Patent Publication No.: CN117564198A discloses a high-pressure flange automated forging production process, including the following steps: S1, feeding the rod into the material track; S2, feeding the rod into the medium frequency induction heating furnace, and heating the rod to 1200-1350°C during transportation; S3, feeding the rod into a high-speed hot upsetting machine, and forging in multiple closed forging dies, including shearing, upsetting, preforming, forming, and punching in sequence; S4, cooling the hot flange forgings to below 400°C by the cooling and conveying system; S5, collecting the hot flange forgings; S6, stack cooling to room temperature. It can be seen that the high-pressure flange automated forging production process has the problem that the heating rod in the heating furnace ages due to long-term use, resulting in uneven heating, which in turn causes the temperature fluctuation during the heating process, thereby causing the production stability of the flange forging to decrease. Summary of the invention

[0004] To this end, the present invention provides an automated flange forging production system based on intelligent manufacturing, which is used to overcome the problem in the prior art that the heating rods in the heating furnace age due to long-term use, resulting in uneven heating, which in turn causes temperature fluctuations in the heating process, thereby causing a decrease in the production stability of flange forging.

[0005] To achieve the above-mentioned purpose, the present invention provides a flange automatic forging production system based on intelligent manufacturing, comprising: a forging module, which is used to forge flange raw materials into finished flanges, including a heating furnace for heating the flange raw materials, a forging machine connected to the heating furnace for forging and shaping the heated flange raw materials to output the finished flange, and a mold connected to the forging machine for limiting the shape of the finished flange; a detection module, which is connected to the forging module, including a temperature sensor connected to the heating furnace for detecting the temperature in the heating furnace, and a temperature sensor connected to the forging machine for detecting the temperature of the forging machine. A vibration sensor for measuring vibration intensity and a thickness sensor arranged at the output end of the forging machine for detecting the thickness of the finished flange; a control module, which is respectively connected to the forging module and the detection module, and is used to determine whether the production stability of the flange forging meets the requirements according to the variance of the temperature fluctuation amplitude in the heating furnace, and when the production stability does not meet the requirements, adjust the opening of the air flow valve in the heating furnace or adjust the transmission ratio of the forging machine according to the average vibration intensity of the forging machine, and adjust the time interval between the heating process and the forging process according to the average vibration intensity of the forging machine and the average thickness of several finished flanges.

[0006] Furthermore, the control module obtains the temperature of the heating furnace during several heating cycles and calculates the variance of the temperature fluctuation amplitude in the heating furnace. If the variance of the temperature fluctuation amplitude in the heating furnace is greater than a preset first variance, it is determined that the production stability of the flange forging does not meet the requirements.

[0007] Furthermore, when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset first variance and less than or equal to the preset second variance, the control module preliminarily determines that the operating stability of the forging machine does not meet the requirements, and makes a secondary judgment on whether the operating stability of the forging machine meets the requirements based on the average vibration intensity of the forging machine.

[0008] Furthermore, the control module reduces the opening of the airflow valve in the heating furnace when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset second variance;

[0009] The reduction range of the opening of the airflow valve in the heating furnace is determined by the difference between the variance of the temperature fluctuation amplitude in the heating furnace and a preset second variance.

[0010] Furthermore, the control module obtains the vibration intensity of the forging machine during several forging cycles and calculates the average vibration intensity of the forging machine. If the average vibration intensity of the forging machine is greater than a preset first vibration intensity, it is secondarily determined that the operating stability of the forging machine does not meet the requirements.

[0011] Furthermore, the control module reduces the transmission ratio of the forging machine when the average vibration intensity of the forging machine is greater than the preset first vibration intensity and less than or equal to a preset second vibration intensity.

[0012] Further, the reduction amplitude of the transmission ratio of the forging machine is determined by the difference between the average vibration intensity of the forging machine and a preset first vibration intensity.

[0013] Furthermore, the control module preliminarily determines that the forming effectiveness of the flange does not meet the requirements when the average vibration intensity of the forging machine is greater than the preset second vibration intensity, and makes a secondary determination on whether the forming effectiveness of the flange meets the requirements based on the average thickness of several finished flanges.

[0014] Furthermore, the control module obtains the thickness of several finished flanges and calculates the average thickness of the several finished flanges. If the average thickness of the several finished flanges is less than the preset thickness, it is secondary determined that the forming effectiveness of the flange does not meet the requirements, and the time interval between the heating process and the forging process is increased.

[0015] Furthermore, the increase range of the time interval between the heating process and the forging process is determined by the difference between the preset thickness and the average thickness of a plurality of finished flanges.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that the system of the present invention adjusts the opening of the airflow valve in the heating furnace according to the variance of the temperature fluctuation amplitude in the heating furnace by setting a forging module, a detection module and a control module. Due to the aging of the heating rod in the heating furnace caused by long-term use, the heating is uneven, and then the temperature of the heating process fluctuates, which makes the raw material unable to reach the predetermined temperature. By reducing the opening of the airflow valve in the heating furnace, the air flow is reduced, and the airflow speed in the furnace is reduced, thereby improving the uniformity of the temperature distribution in the furnace. By adjusting the transmission ratio of the forging machine according to the average vibration intensity of the forging machine, due to the wear of the transmission gear in the forging machine caused by long-term use, the forging machine is in operation. The vibration intensity increases, resulting in a decrease in forging stability. By reducing the transmission ratio of the forging machine, the power transmission of the system is reduced, the stress on the gears is reduced, and the forging stability is improved. The time interval between the heating process and the forging process is adjusted according to the average thickness of several finished flanges. Since the flange needs to be forged and molded at high temperature, the mold is subjected to thermal stress, resulting in wear on the mold surface, which may cause the thickness of the mold to decrease, resulting in the thickness of the produced flange not meeting the predetermined requirements. By increasing the time interval between the heating process and the forging process, the temperature of the flange is appropriately reduced, and within the molding temperature range, the influence of high temperature on the mold is reduced, thereby achieving an improvement in the production stability of flange forging.

[0017] The system of the present invention adjusts the opening of the airflow valve in the heating furnace by setting a preset first variance and a preset second variance. Due to the aging of the heating rod in the heating furnace due to long-term use, uneven heating occurs, and then the temperature of the heating process fluctuates, which causes the raw materials to fail to reach the predetermined temperature. By reducing the opening of the airflow valve in the heating furnace, the airflow volume is reduced, and the airflow speed in the furnace is reduced, thereby improving the uniformity of temperature distribution in the furnace.

[0018] The system of the present invention adjusts the transmission ratio of the forging machine by setting a preset first vibration intensity and a preset second vibration intensity. Since the transmission gears in the forging machine are worn due to long-term use, the vibration intensity of the forging machine increases during operation, which leads to a decrease in the forging stability. By reducing the transmission ratio of the forging machine, the power transmission of the system is reduced, the stress on the gears is alleviated, and the forging stability is improved.

[0019] The system of the present invention adjusts the time interval between the heating process and the forging process by setting a preset thickness. Since the flange needs to be forged and molded at a high temperature, the mold is subjected to thermal stress, which causes wear on the mold surface and may cause the thickness of the mold to decrease, thereby causing the thickness of the produced flange to fail to meet the predetermined requirements. By increasing the time interval between the heating process and the forging process, the temperature of the flange is appropriately reduced, and within the molding temperature range, the impact of high temperature on the mold is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structural block diagram of the flange automatic forging production system based on intelligent manufacturing according to an embodiment of the present invention;

[0021] Figure 2 It is a logic flow chart of the flange automatic forging production system based on intelligent manufacturing according to an embodiment of the present invention;

[0022] Figure 3 It is a specific structural block diagram of a forging module of a flange automated forging production system based on intelligent manufacturing according to an embodiment of the present invention;

[0023] Figure 4 This is a block diagram of the connection structure of the forging module and the control module of the flange automatic forging production system based on intelligent manufacturing in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively the overall structure block diagram, logic flow chart, specific structure block diagram of the forging module and the connection structure block diagram of the forging module and the control module of the flange automatic forging production system based on intelligent manufacturing according to the embodiment of the present invention. The present invention is an automatic forging production system for flanges based on intelligent manufacturing, comprising:

[0029] A forging module, used for forging the flange raw material into a finished flange, including a heating furnace for heating the flange raw material, a forging machine connected to the heating furnace for forging and shaping the heated flange raw material to output the finished flange, and a die connected to the forging machine for defining the shape of the finished flange;

[0030] A detection module connected to the forging module, comprising a temperature sensor connected to the heating furnace for detecting the temperature in the heating furnace, a vibration sensor connected to the forging machine for detecting the vibration intensity of the forging machine, and a thickness sensor arranged at the output end of the forging machine for detecting the thickness of the finished flange;

[0031] A control module, which is respectively connected to the forging module and the detection module, is used to determine whether the production stability of the flange forging meets the requirements according to the variance of the temperature fluctuation amplitude in the heating furnace. When the production stability does not meet the requirements, the opening of the air flow valve in the heating furnace is adjusted or the transmission ratio of the forging machine is adjusted according to the average vibration intensity of the forging machine, and the time interval between the heating process and the forging process is adjusted according to the average vibration intensity of the forging machine and the average thickness of several finished flanges.

[0032] Specifically, the flange raw material can be carbon steel, stainless steel, or alloy steel.

[0033] Specifically, the forging machine may be an impact forging machine, a continuous forging machine, or a hydraulic forging machine.

[0034] Specifically, the shape of the mold is changed accordingly according to actual needs.

[0035] Specifically, the time interval between the heating process and the forging process is the time interval between the moment when the flange raw material is completely heated in the heating furnace and the moment when the forging begins.

[0036] In implementation, the system of the present invention is provided with a forging module, a detection module and a control module, and the opening of the airflow valve in the heating furnace is adjusted according to the variance of the temperature fluctuation amplitude in the heating furnace. Due to the aging of the heating rod in the heating furnace due to long-term use, the heating is uneven, and then the temperature of the heating process fluctuates, which makes it impossible for the raw material to reach the predetermined temperature. By reducing the opening of the airflow valve in the heating furnace, the air flow is reduced, and the airflow speed in the furnace is reduced, thereby improving the uniformity of the temperature distribution in the furnace. By adjusting the transmission ratio of the forging machine according to the average vibration intensity of the forging machine, the vibration intensity of the forging machine during operation increases due to the wear of the transmission gears in the forging machine due to long-term use. , which leads to a decrease in forging stability. By reducing the transmission ratio of the forging machine, the power transmission of the system is reduced, the stress on the gear is reduced, and the stability of forging is improved. The time interval between the heating process and the forging process is adjusted according to the average thickness of several finished flanges. Since the flange needs to be forged and molded at high temperature, the mold is subjected to thermal stress, which causes wear on the mold surface and may cause the thickness of the mold to decrease, resulting in the thickness of the produced flange failing to meet the predetermined requirements. By increasing the time interval between the heating process and the forging process, the temperature of the flange is appropriately reduced, and within the molding temperature range, the influence of high temperature on the mold is reduced, thereby achieving an improvement in the production stability of flange forging.

[0037] Specifically, the control module obtains the temperature of the heating furnace during several heating cycles and calculates the variance of the temperature fluctuation amplitude in the heating furnace. If the variance of the temperature fluctuation amplitude in the heating furnace is greater than a preset first variance, it is determined that the production stability of the flange forging does not meet the requirements.

[0038] Specifically, when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset first variance and less than or equal to the preset second variance, the control module preliminarily determines that the operating stability of the forging machine does not meet the requirements, and makes a secondary judgment on whether the operating stability of the forging machine meets the requirements based on the average vibration intensity of the forging machine.

[0039] It can be understood that the three intervals corresponding to the preset first variance Q1 and the preset second variance Q2 correspond to three situations respectively. The first interval is Q≤Q1, corresponding to the situation where the production stability of flange forging meets the requirements; the second interval is Q1<Q≤Q2, corresponding to the situation where the transmission gears in the forging machine are worn due to long-term use, resulting in increased vibration intensity of the forging machine during operation; the third interval is Q>Q2, corresponding to the situation where long-term use causes aging of the heating rods in the heating furnace, resulting in uneven heating, and then causing temperature fluctuations in the heating process. In practice, Q1 is generally selected in the range of [9℃ 2 , 11℃ 2 ], Q2 is generally selected in the range of [14℃ 2 , 16℃ 2 ].

[0040] Preferably, the first variance Q1 is preset to be 10°C. 2 The preferred embodiment of the preset second variance Q2 is 15°C 2 .

[0041] Specifically, the variance of the temperature fluctuation amplitude in the heating furnace is recorded as Q.

[0042] Specifically, the variance of the temperature fluctuation amplitude in the heating furnace is the variance of the temperature fluctuation amplitude in the heating furnace during several heating cycles. The calculation method of the variance of the temperature fluctuation amplitude in the heating furnace is a conventional technical means well known to technical personnel in this field. Therefore, the calculation process of the variance of the temperature fluctuation amplitude in the heating furnace will not be repeated here.

[0043] In implementation, the system of the present invention determines the production stability of flange forging by setting a preset first variance and a preset second variance, thereby reducing the impact of decreased detection stability of flange forging due to inaccurate judgment of the production stability of flange forging, and further achieving improved production stability of flange forging.

[0044] Specifically, the control module reduces the opening of the airflow valve in the heating furnace when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset second variance;

[0045] The reduction range of the opening of the airflow valve in the heating furnace is determined by the difference between the variance of the temperature fluctuation amplitude in the heating furnace and a preset second variance.

[0046] Specifically, the calculation formula for the opening of the reduced airflow valve in the heating furnace is:

[0047] ;

[0048] Among them, V' is the opening of the airflow valve in the heating furnace after the reduction, V is the current opening of the airflow valve in the heating furnace, A is the minimum unit variance for adjusting the opening of the airflow valve in the heating furnace, and v is the opening of the airflow valve in the heating furnace when the variance of the temperature fluctuation amplitude in the heating furnace is the minimum unit variance.

[0049] In practice, the value of A is generally taken as 19°C 2 ~21℃ 2 , preferably, the preferred embodiment of A is 20°C 2 .

[0050] In implementation, the optional range of the value of v is [65%, 75%]. Preferably, when the opening of the airflow valve in the heating furnace is greater than 70%, uneven heating may occur. Therefore, the preferred embodiment of v is 70%.

[0051] Specifically, when the value of V' is a decimal, the value of V' is automatically rounded up to an integer.

[0052] For example, flanges are produced using an automated flange forging production system based on intelligent manufacturing, where V=75% and Q=20°C 2 , calculated .

[0053] In implementation, the system of the present invention adjusts the opening of the airflow valve in the heating furnace by setting a preset first variance and a preset second variance. Due to the aging of the heating rod in the heating furnace due to long-term use, uneven heating occurs, and then the temperature of the heating process fluctuates, which causes the raw materials to fail to reach the predetermined temperature. By reducing the opening of the airflow valve in the heating furnace, the airflow volume is reduced, and the airflow speed in the furnace is reduced, thereby improving the uniformity of the temperature distribution in the furnace.

[0054] Specifically, the control module obtains the vibration intensity of the forging machine during several forging cycles and calculates the average vibration intensity of the forging machine. If the average vibration intensity of the forging machine is greater than a preset first vibration intensity, it is secondarily determined that the operating stability of the forging machine does not meet the requirements.

[0055] Specifically, the control module reduces the transmission ratio of the forging machine when the average vibration intensity of the forging machine is greater than the preset first vibration intensity and less than or equal to the preset second vibration intensity.

[0056] It can be understood that the three intervals corresponding to the preset first vibration intensity P1 and the preset second vibration intensity P2 correspond to three situations respectively. The first interval is P≤P1, corresponding to the situation that the operating stability of the forging machine meets the requirements; the second interval is P1<P≤P2, corresponding to the situation that the transmission gears in the forging machine are worn due to long-term use, resulting in an increase in the vibration intensity of the forging machine during operation; the third interval is P>P2, corresponding to the situation that the flange needs to be forged and molded under high temperature conditions, resulting in thermal stress on the mold, causing wear on the mold surface, and may cause the thickness of the mold to decrease. In practice, P1 is generally selected in the range of [1.4m / s 2 , 1.6m / s 2 ], P2 is generally selected in the range of [1.7m / s 2 , 1.9m / s 2 ].

[0057] Preferably, the first vibration intensity P1 is preset to be 1.5 m / s. 2 The preferred embodiment of the preset second vibration intensity P2 is 1.8 m / s2.

[0058] Specifically, the average vibration intensity of the forging machine is denoted by P.

[0059] Specifically, the average vibration intensity of the forging machine is calculated as:

[0060] ;

[0061] Where P is the average vibration intensity of the forging machine, X a is the vibration intensity of the forging machine in the ath forging cycle, n is the number of forging cycles, and n is a natural number greater than or equal to 1.

[0062] In implementation, the system of the present invention performs a secondary judgment on the operating stability of the forging machine by setting a preset first vibration intensity and a preset second vibration intensity, thereby reducing the impact of the reduced production stability of flange forging due to inaccurate secondary judgment on the operating stability of the forging machine, and further improving the production stability of flange forging.

[0063] Specifically, the reduction amplitude of the transmission ratio of the forging machine is determined by the difference between the average vibration intensity of the forging machine and the preset first vibration intensity.

[0064] Specifically, the calculation formula of the reduced transmission ratio of the forging machine is:

[0065] ;

[0066] Among them, H' is the reduced transmission ratio of the forging machine, H is the current transmission ratio of the forging machine, B is the minimum unit vibration intensity for adjusting the transmission ratio of the forging machine, and h is the transmission ratio of the forging machine when the average vibration intensity of the forging machine is the minimum unit vibration intensity.

[0067] In practice, the value of B is generally taken as 1.9m / s 2 ~2.1m / s 2 , preferably, the preferred embodiment of B is 2m / min 2 .

[0068] In implementation, the optional range of the value of h is [9, 11]. Preferably, when the transmission ratio of the forging machine is greater than 10, the vibration intensity of the forging machine may increase. Therefore, the preferred embodiment of h is 10.

[0069] For example, flanges are produced using an automated flange forging production system based on intelligent manufacturing, where H=11.5 and P=2m / s 2 , calculated .

[0070] In implementation, the system of the present invention adjusts the transmission ratio of the forging machine by setting a preset first vibration intensity and a preset second vibration intensity. Since the transmission gears in the forging machine are worn due to long-term use, the vibration intensity of the forging machine increases during operation, which leads to a decrease in the forging stability. By reducing the transmission ratio of the forging machine, the power transmission of the system is reduced, the stress on the gears is alleviated, and the forging stability is improved.

[0071] Specifically, the control module preliminarily determines that the forming effectiveness of the flange does not meet the requirements when the average vibration intensity of the forging machine is greater than the preset second vibration intensity, and makes a secondary determination on whether the forming effectiveness of the flange meets the requirements based on the average thickness of several finished flanges.

[0072] Specifically, the control module obtains the thickness of several finished flanges and calculates the average thickness of the several finished flanges. If the average thickness of the several finished flanges is less than the preset thickness, it is determined for the second time that the forming effectiveness of the flange does not meet the requirements, and the time interval between the heating process and the forging process is increased.

[0073] It can be understood that the two intervals corresponding to the preset thickness Y0 correspond to two situations. The first interval is Y<Y0, corresponding to the flange needs to be forged and molded at high temperature, resulting in thermal stress on the mold, causing wear on the mold surface, and possibly reducing the thickness of the mold; the second interval is Y≥Y0, corresponding to the situation where the forming effectiveness of the flange meets the requirements. In practice, the range of Y0 is generally [40mm, 60mm].

[0074] Preferably, the preset thickness Y0 is 50 mm.

[0075] Specifically, the average thickness of several finished flanges is recorded as Y.

[0076] Specifically, the average thickness of several finished flanges is calculated as follows:

[0077] ;

[0078] Among them, Y is the average thickness of several finished flanges, E f is the thickness of the f-th finished flange, i is the number of finished flanges, and i is a natural number greater than or equal to 1.

[0079] In implementation, the system of the present invention performs a secondary judgment on the forming effectiveness of the flange by setting a preset thickness, thereby reducing the impact of the reduced production stability of the flange forging due to inaccurate secondary judgment on the forming effectiveness of the flange, and further improving the production stability of the flange forging.

[0080] Specifically, the increase range of the time interval between the heating process and the forging process is determined by the difference between the preset thickness and the average thickness of a plurality of finished flanges.

[0081] Specifically, the calculation formula for the time interval between the increased heating process and the forging process is:

[0082] ;

[0083] Among them, L' is the time interval between the increased heating process and the forging process, L is the time interval between the current heating process and the forging process, C is the minimum unit thickness for adjusting the time interval between the heating process and the forging process, and l is the time interval between the heating process and the forging process when the average thickness of several finished flanges is the minimum unit thickness.

[0084] In practice, the value of C is generally 40 mm to 50 mm. Preferably, the preferred embodiment of C is 45 mm.

[0085] In implementation, the optional range of the value of l is [1min, 2min]. Preferably, when the time interval between the heating process and the forging process is less than 1.5min, the thickness of the mold may be reduced. Therefore, the preferred embodiment of l is 1.5min.

[0086] For example, the flange is produced using the flange automatic forging production system based on intelligent manufacturing, where L=1.3min, Y=41mm, and the calculation result is .

[0087] In implementation, the system of the present invention adjusts the time interval between the heating process and the forging process by setting a preset thickness. Since the flange needs to be forged and molded at a high temperature, the mold is subjected to thermal stress, resulting in wear on the mold surface, which may cause the thickness of the mold to decrease, thereby causing the thickness of the produced flange to fail to meet the predetermined requirements. By increasing the time interval between the heating process and the forging process, the temperature of the flange is appropriately reduced, and within the molding temperature range, the impact of high temperature on the mold is reduced.

[0088] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A flange automatic forging production system based on intelligent manufacturing, characterized in that: include: A forging module, used for forging the flange raw material into a finished flange, including a heating furnace for heating the flange raw material, a forging machine connected to the heating furnace for forging and shaping the heated flange raw material to output the finished flange, and a die connected to the forging machine for defining the shape of the finished flange; A detection module connected to the forging module, comprising a temperature sensor connected to the heating furnace for detecting the temperature in the heating furnace, a vibration sensor connected to the forging machine for detecting the vibration intensity of the forging machine, and a thickness sensor arranged at the output end of the forging machine for detecting the thickness of the finished flange; A control module, which is connected to the forging module and the detection module respectively, and is used to determine whether the production stability of the flange forging meets the requirements according to the variance of the temperature fluctuation amplitude in the heating furnace, and to adjust the time interval between the heating process and the forging process according to the average thickness of a number of finished flanges; The control module obtains the temperature of the heating furnace in several heating cycles, and calculates the variance of the temperature fluctuation amplitude in the heating furnace. If the variance of the temperature fluctuation amplitude in the heating furnace is greater than a preset first variance, it is determined that the production stability of the flange forging does not meet the requirements; The control module preliminarily determines that the operation stability of the forging machine does not meet the requirements when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset first variance and less than or equal to the preset second variance, and performs a secondary determination on whether the operation stability of the forging machine meets the requirements according to the average vibration intensity of the forging machine; The preset range of the first variance is [9℃ 2 , 11℃ 2 ], the preset second variance range is [14℃ 2 , 16℃ 2 ]; The control module reduces the opening of the air flow valve in the heating furnace when the variance of the temperature fluctuation amplitude in the heating furnace is greater than the preset second variance; Wherein, the reduction range of the opening of the air flow valve in the heating furnace is determined by the difference between the variance of the temperature fluctuation amplitude in the heating furnace and a preset second variance; The calculation formula for the opening of the reduced air flow valve in the heating furnace is: ； Among them, V' is the opening of the airflow valve in the heating furnace after the reduction, V is the current opening of the airflow valve in the heating furnace, A is the minimum unit variance for adjusting the opening of the airflow valve in the heating furnace, and v is the opening of the airflow valve in the heating furnace when the variance of the temperature fluctuation amplitude in the heating furnace is the minimum unit variance; The variance of the temperature fluctuation amplitude in the heating furnace is recorded as Q, and the preset second variance is recorded as Q2; The value of A is 19℃ 2 ~21℃ 2 ; The value of v is [65%, 75%]; The control module obtains the vibration intensity of the forging machine in several forging cycles, and calculates the average vibration intensity of the forging machine. If the average vibration intensity of the forging machine is greater than a preset first vibration intensity, it is secondarily determined that the operation stability of the forging machine does not meet the requirements; The control module reduces the transmission ratio of the forging machine when the average vibration intensity of the forging machine is greater than the preset first vibration intensity and less than or equal to the preset second vibration intensity; The calculation formula of the reduced transmission ratio of the forging machine is: ； Wherein, H' is the transmission ratio of the forging machine after the reduction, H is the current transmission ratio of the forging machine, B is the minimum unit vibration intensity for adjusting the transmission ratio of the forging machine, and h is the transmission ratio of the forging machine when the average vibration intensity of the forging machine is the minimum unit vibration intensity; The average vibration intensity P of the forging machine is 2m / s 2 , the first vibration intensity P1 is preset to 1.5m / s 2 ; The value of B is 1.9m / s 2 ~2.1m / s 2 ; The value of h is [9, 11]; The specific calculation formula for adjusting the time interval between the heating process and the forging process according to the average thickness of a number of finished flanges is: ； Wherein, L' is the time interval between the heating process and the forging process after the increase, L is the time interval between the current heating process and the forging process, C is the minimum unit thickness for adjusting the time interval between the heating process and the forging process, and l is the time interval between the heating process and the forging process when the average thickness of a number of finished flanges is the minimum unit thickness; The average thickness Y of several finished flanges is 41 mm, and the preset thickness Y0 is 50 mm; The value of C is 40mm~50mm; The value of l is [1min, 2min].

2. The flange automatic forging production system based on intelligent manufacturing according to claim 1 is characterized in that: The control module preliminarily determines that the forming effectiveness of the flange does not meet the requirements when the average vibration intensity of the forging machine is greater than the preset second vibration intensity, and makes a secondary determination on whether the forming effectiveness of the flange meets the requirements based on the average thickness of several finished flanges.

3. The flange automatic forging production system based on intelligent manufacturing according to claim 2 is characterized in that: The control module obtains the thickness of several finished flanges and calculates the average thickness of the several finished flanges. If the average thickness of the several finished flanges is less than the preset thickness, it is determined that the forming effectiveness of the flange does not meet the requirements for the second time, and the time interval between the heating process and the forging process is increased.

Images