Machining equipment and machining method for metal casting production

Abstract

The invention discloses machining equipment and a machining method based on metal casting production, and belongs to the technical field of metal casting machining, and the machining equipment comprises a plurality of sets of fans used for conveying cold air at different air speeds to a machining table so as to cool a metal casting; the infrared thermometers are used for acquiring temperature information of the surface of the metal casting in the cooling process; the control assembly is used for adjusting the wind speed of each group of fans, and specifically, the wind speed is adjusted by controlling the air cooling power of the fans; according to the invention, whether the temperature in each monitoring area is abnormal or not can be judged according to the difference between the cooling temperature in the single monitoring area and the standard cooling temperature and the difference between the cooling temperature in the single monitoring area and the cooling temperatures in all the monitoring areas; whether the cooling imbalance phenomenon occurs in each monitoring area of the metal casting or not can be analyzed more accurately, so that corresponding treatment is carried out in time.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal casting processing, and in particular relates to processing equipment and a processing method for metal casting production. Background Art

[0002] Metal castings are shaped metal objects obtained through various casting methods. Specifically, smelted liquid metal is poured into a pre-prepared mold through pouring, injection, suction, or other casting methods. After cooling, it undergoes subsequent processing such as polishing to obtain an object with a specific shape, size, and properties.

[0003] After metal castings are cast, they are typically cooled, typically using water or air cooling. During air cooling, multiple fans are typically installed to blow cold air onto the metal castings, thereby cooling them. For longer metal castings, multiple fans are required to coordinate cooling. This coordination can easily lead to uneven cooling on the casting surface, resulting in varying thermal stresses across the casting, causing cooling cracks on the casting surface and reducing its mechanical properties and service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing equipment and a processing method for metal casting production to solve the problems faced in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A processing equipment for producing metal castings, comprising: Multiple sets of fans are placed on both sides of the processing table to deliver cold air of different wind speeds to the processing table; Multiple groups of infrared thermometers, corresponding to each group of fans, are used to obtain temperature information of the casting surface during the cooling process; The control assembly is installed on the processing table and is used to adjust the wind speed of each group of fans, wherein the wind speed of the fans is adjusted by controlling the power of the fans; The control assembly is equipped with a real-adjustment module and a pre-adjustment module. The real-adjustment module is used to analyze the acquired temperature information to determine whether the cooling temperature at various locations on the casting surface is balanced. When it is unbalanced, a real-adjustment instruction is sent to adjust the power of the corresponding fan to control the blowing speed of the fan; the pre-adjustment module is used to further analyze the acquired temperature information under the condition that the cooling temperature at various locations is balanced, so as to determine potential temperature imbalance. When there is a potential imbalance, a pre-adjustment instruction is sent to adjust the power of the corresponding fan to fine-tune the blowing speed of the fan.

[0006] A processing method for producing metal castings, comprising: Step 1: Place the metal casting on the processing table. According to the size of the metal casting, select an appropriate number of fans and install them on both sides of the metal casting to ensure that the cooling airflow of each set of fans can evenly cover the corresponding casting surface. Step 2: According to the cooling steps of the metal casting, determine the time and wind speed of each cooling stage, and then start the fan for air cooling; Step 3: Obtain the surface temperature of the metal casting in real time, and then analyze and determine whether the cooling temperature at various locations on the metal casting surface is balanced. If it is not balanced, generate a real-time adjustment instruction; Step 4: After determining that the cooling temperature is under a balanced condition, further analyze the acquired temperature information to determine potential temperature imbalance. If a potential imbalance exists, generate a pre-adjustment instruction. Step 5: Adjust the power of the corresponding fan according to the generated actual adjustment instruction and pre-adjustment instruction.

[0007] Furthermore, in step 3, the method for determining whether the cooling temperature at various locations on the surface of the metal casting is balanced is: According to the position of the fan, the surface of the metal casting is divided into N monitoring areas, and the temperature value of each monitoring area is obtained in real time. ; By formula Obtain the temperature deviation value of each monitoring area ; The temperature deviation value obtained The temperature deviates from the preset threshold range To compare: when When , it is determined that the cooling temperature here is unbalanced, and a real adjustment instruction is generated; in, as well as is the preset coefficient, is the preset standard temperature value of the jth monitoring area in the cooling stage, and , as well as The temperature deviation threshold is preset for this cooling phase.

[0008] Furthermore, the actual adjustment instruction includes a first increase instruction and a first decrease instruction: when When , the first increase instruction is generated; when , then the first decrease instruction is generated.

[0009] Furthermore, the method for adjusting the power of the corresponding fan according to the generated actual adjustment instruction in step 5 is: When the first increase instruction is generated, the formula Adjust the fan power to ; When the first reduction instruction is generated, the formula Adjust the fan power to ; in, is the current cooling power of the fan, The maximum power that the system can adjust. is the power conversion coefficient, is the thickness of the metal casting, is the thickness comparison value set, is the ambient temperature, is the set ambient temperature comparison value, as well as is the weight coefficient.

[0010] Furthermore, the method for generating the pre-adjustment instruction in step 4 is: When the cooling temperature is judged to be in equilibrium, the cooling stage of the monitoring area is The interval period is divided into m monitoring time periods, so as to formulate the temperature deviation value within the monitoring time period. Curve function that changes with time ; By formula Obtain warning value ; The warning value to be obtained and preset warning thresholds To compare: when When , it is determined that there is a potential imbalance, and a pre-adjustment instruction is generated; in, as well as is the preset coefficient, is the start time of the monitoring period, The end time of the monitoring period.

[0011] Furthermore, the method for adjusting the power of the corresponding fan according to the generated pre-adjustment instruction in step 5 is: When generating a pre-adjustment instruction, first determine The value of When , the second increase instruction is generated. When , a second reduction instruction is generated; When the second increase instruction is generated, the formula Adjust the fan power to ; At that time, the second reduction instruction is generated, and this time the formula Adjust the fan power to ; in, is another power conversion factor.

[0012] Beneficial effects of the present invention: The present invention can determine whether the temperature in each monitoring area is abnormal by combining the difference between the cooling temperature in a single monitoring area and the standard cooling temperature, as well as the difference between the cooling temperature in a single monitoring area and the cooling temperature in all monitoring areas. It can more accurately analyze whether cooling imbalance occurs in each monitoring area of ​​the metal casting, and thus perform corresponding processing. When cooling imbalance occurs, the fan cooling power can be adaptively increased or decreased according to the size of the temperature deviation value, the ambient temperature and the thickness of the metal casting to restore the cooling temperature in time, thereby avoiding further expansion of the temperature imbalance and ensuring the quality of the metal casting.

[0013] The present invention can also monitor potential temperature anomalies that may occur in various areas of the metal casting under the condition that the cooling temperature at various locations is balanced, so as to promptly fine-tune the air cooling power of the fan, thereby avoiding the occurrence of temperature anomalies and better ensuring the quality of the entire metal casting.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a partial module diagram of the processing equipment of the present invention; Figure 2 It is a step diagram of the processing method of the present invention. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] In one embodiment, a processing device for producing metal castings is disclosed, such as Figure 1 As shown, the processing equipment includes: Multiple sets of fans are placed on both sides of the processing table to deliver cold air of different wind speeds to the processing table; Multiple groups of infrared thermometers, corresponding to each group of fans, are used to obtain temperature information of the casting surface during the cooling process; The control assembly is installed on the processing table and is used to adjust the wind speed of each group of fans, wherein the wind speed of the fans is adjusted by controlling the power of the fans; The control assembly is equipped with a real-adjustment module and a pre-adjustment module. The real-adjustment module is used to analyze the acquired temperature information to determine whether the cooling temperature at various locations on the casting surface is balanced. When it is unbalanced, a real-adjustment instruction is sent to adjust the power of the corresponding fan to control the blowing speed of the fan; the pre-adjustment module is used to further analyze the acquired temperature information under the condition that the cooling temperature at various locations is balanced, so as to determine potential temperature imbalance. When there is a potential imbalance, a pre-adjustment instruction is sent to adjust the power of the corresponding fan to fine-tune the blowing speed of the fan.

[0019] In another embodiment, a processing method based on metal casting production is also disclosed, and the processing method is implemented by the above-mentioned processing equipment based on metal casting production, such as Figure 2 As shown, the processing method includes: Step 1: Place the metal casting on the processing table. According to the size of the metal casting, select an appropriate number of fans and install them on both sides of the metal casting to ensure that the cooling airflow of each set of fans can evenly cover the corresponding casting surface. Step 2: According to the cooling steps of the metal casting, determine the time and wind speed of each cooling stage, and then start the fan for air cooling; Step 3: Obtain the surface temperature of the metal casting in real time, and then analyze and determine whether the cooling temperature at various locations on the metal casting surface is balanced. If it is not balanced, generate a real-time adjustment instruction; Step 4: After determining that the cooling temperature is under a balanced condition, further analyze the acquired temperature information to determine potential temperature imbalance. If a potential imbalance exists, generate a pre-adjustment instruction. Step 5: Adjust the power of the corresponding fan according to the generated actual adjustment instruction and pre-adjustment instruction.

[0020] Through the above technical solution, the present application adopts air cooling technology to cool the metal casting. First, according to the size of the metal casting, an appropriate number of fans are selected and installed on both sides of the metal casting to ensure that the air cooling airflow of each group of fans can evenly cover the corresponding casting surface. According to the cooling steps of the metal casting, the time and wind speed of each cooling stage are determined, and then the fans are turned on to perform air cooling operation; the temperature of each area of ​​the metal casting surface is obtained by the set infrared thermometer to determine whether the temperature of each area of ​​the metal casting is abnormal. When an abnormality occurs, the air cooling power of the fan can be automatically adaptively adjusted in combination with the ambient temperature and the thickness of the metal casting itself, thereby ensuring that the cooling temperature of the entire metal casting is uniform throughout the cooling process and reducing the occurrence of uneven cooling; at the same time, the pre-adjustment module monitors the potential temperature anomalies that may occur in each area of ​​the metal casting under the condition that the cooling temperature of each area is balanced, so as to timely fine-tune the air cooling power of the fan, thereby avoiding the occurrence of temperature anomalies and better ensuring the quality of the entire metal casting.

[0021] The method for determining whether the cooling temperature of the metal casting surface is balanced in step 3 is as follows: the metal casting surface is divided into N monitoring areas according to the position of the fan, and the temperature value of each monitoring area is obtained in real time. ; By formula Obtain the temperature deviation value of each monitoring area ; The temperature deviation value obtained The temperature deviates from the preset threshold range To compare: when When , it is determined that the cooling temperature here is unbalanced, and a real adjustment instruction is generated; in, as well as is the preset coefficient, is the preset standard temperature value of the jth monitoring area in the cooling stage, and , as well as The temperature deviation threshold preset for this cooling phase; The actual adjustment instruction includes the first increase instruction and the first decrease instruction: When , the first increase instruction is generated; when When , the first reduction instruction is generated; The method for adjusting the power of the corresponding fan according to the generated actual adjustment instruction in step 5 is: when the first increase instruction is generated, the formula Adjust the fan power to ; When the first reduction instruction is generated, the formula Adjust the fan power to ; in, is the current cooling power of the fan, The maximum power that the system can adjust. is the power conversion coefficient, is the thickness of the metal casting, is the thickness comparison value set, is the ambient temperature, is the set ambient temperature comparison value, as well as is the weight coefficient.

[0022] The above technical solution provides a method for determining the occurrence of temperature unevenness and an adjustment method. First, the surface of the metal casting is divided into N monitoring areas according to the position of the fan, and the temperature value of each monitoring area is obtained in real time. ; Through the formula Obtain the temperature deviation value of each monitoring area Where, as well as is a preset coefficient, which is determined according to different working conditions, but meets the , The standard temperature value preset for the jth monitoring area in the cooling stage is determined based on the best historical data of each monitoring area. j is the jth monitoring area, and the formula is It is expressed as the difference between the temperature of a single monitoring area and the temperature of the entire monitoring area. The formula is Indicates the difference between the temperature of a single monitoring area and the preset standard temperature. The larger the value, the higher the temperature in the monitoring area. The smaller it is, the lower the temperature of the monitoring area is, so the temperature deviation value obtained is The temperature deviates from the standard threshold range preset based on historical data Compare: When When , it means that the temperature in the monitoring area is abnormal compared to the normal temperature, then it is judged that the cooling temperature here is unbalanced, and a real adjustment instruction is generated to adjust the air cooling power of the monitoring area. The real adjustment instruction includes a first increase instruction and a first decrease instruction. When When , it means that the temperature of the metal casting is higher than the normal temperature, which means that the cooling power of the fan is insufficient, and a first increase instruction is generated to increase the cooling power of the fan; when , indicating that the temperature of the metal casting is lower than the normal temperature, indicating that the cooling power of the fan is too large, then the first reduction instruction is generated to reduce the cooling power of the fan. Specifically, when the first increase instruction is generated, the formula is used at this time. Adjust the fan power to , when the first reduction instruction is generated, the formula Adjust the fan power to ;in is the current cooling power of the fan, The maximum power that the system can adjust is determined based on the fan's factory data. is the power conversion coefficient, which is determined by comparing experimental data, is the thickness of the metal casting, is the thickness comparison value set, is the ambient temperature, is the set ambient temperature comparison value, as well as is the weight coefficient, which is flexibly selected according to the scenario to meet For example, under high ambient temperature conditions, , , and under the condition of thick metal castings, ,make In this way, the difference between the cooling temperature in a single monitoring area and the standard cooling temperature, as well as the difference between the cooling temperature in a single monitoring area and the cooling temperature in all monitoring areas, can be combined to determine whether the temperature in each monitoring area is abnormal. This allows for a more accurate analysis of whether cooling imbalances occur in each monitoring area of ​​the metal casting, allowing for appropriate treatment. At the same time, when cooling imbalances occur, the fan's cooling power can be adaptively increased or decreased based on the temperature deviation value, the ambient temperature, and the thickness of the metal casting to promptly restore the cooling temperature, thereby avoiding further expansion of the temperature imbalance and ensuring the quality of the metal casting.

[0023] The method for generating the pre-adjustment instruction in step 4 is: when the cooling temperature is judged to be in equilibrium, the cooling stage of the monitoring area is set to The interval period is divided into m monitoring time periods, so as to formulate the temperature deviation value within the monitoring time period. Curve function that changes with time ; By formula Obtain warning value ; The warning value to be obtained and preset warning thresholds To compare: when When , it is determined that there is a potential imbalance, and a pre-adjustment instruction is generated; in, as well as is the preset coefficient, is the start time of the monitoring period, The end time of the monitoring period; The method for adjusting the power of the corresponding fan according to the generated pre-adjustment instruction in step 5 is: when the pre-adjustment instruction is generated, first determine The value of When , the second increase instruction is generated. When , a second reduction instruction is generated; When the second increase instruction is generated, the formula Adjust the fan power to ; At that time, the second reduction instruction is generated, and this time the formula Adjust the fan power to ;in, is another power conversion factor.

[0024] The above scheme provides a specific method for generating a pre-adjustment instruction and a specific method for fine-tuning the fan cooling power according to the pre-adjustment instruction. First, when it is determined that the cooling temperature is under a balanced condition, the cooling stage of the monitoring area is set to The interval period is divided into m monitoring time periods, so as to formulate the temperature deviation value within the monitoring time period. Curve function that changes with time , through the formula Obtain warning value ; as well as is the preset coefficient. Generally, , we know that the formula It represents the cumulative value of the temperature deviation during the entire monitoring period. The larger the value, the greater the possibility of exceeding the temperature deviation threshold, and the greater the possibility of potential cooling temperature imbalance. The formula It indicates the difference between the temperature deviation value in the second half of the entire monitoring period and the temperature deviation value in the first half. The larger the value, the greater the fluctuation of the temperature deviation value, and the greater the possibility of potential cooling temperature imbalance. Therefore, the early warning value obtained will be and pre-set warning thresholds based on historical data Compare: When When it is determined that there is a potential imbalance, a pre-adjustment instruction is generated; similarly, there are two conditions for generating a pre-adjustment instruction: increase or decrease. Therefore, when generating a pre-adjustment instruction, the first condition is to determine the The value of When , it means that during the entire monitoring period, the cooling temperature of the metal casting is increasing. In order to achieve better cooling, a second increase instruction is generated to slightly adjust the fan cooling power to return it to normal. The specific formula is: Adjust the fan power to ; Similarly when When , it means that during the entire monitoring period, the cooling temperature of the metal casting is decreasing. In order to better ensure the quality of metal cooling, it is necessary to slow down the cooling speed appropriately. Then a second reduction instruction is generated to slightly adjust the fan cooling power to return it to normal. The specific formula is: Adjust the fan power to ; Power conversion factor This can be determined by comparing experimental data. In this way, under the condition that the cooling temperature at each location is balanced, the potential temperature anomalies that may occur in various areas of the metal casting can be monitored by the accumulation of temperature deviation values ​​within each monitoring time period and the fluctuation of temperature deviation values. In this way, the fan cooling power can be fine-tuned in a timely manner to return it to a normal cooling temperature. This can avoid the occurrence of temperature anomalies and better ensure the quality of the entire metal casting.

[0025] It should be noted that, before performing calculations in the above scheme, all parameters are first selected into units and then dimensionless processed. The dimensionless processing method can be implemented according to existing technologies such as normalization processing, which will not be described in detail here.

[0026] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A processing equipment for metal casting production, characterized in that: The processing equipment includes: Multiple sets of fans are placed on both sides of the processing table to deliver cold air of different wind speeds to the processing table; Multiple groups of infrared thermometers, corresponding to each group of fans, are used to obtain temperature information of the casting surface during the cooling process; The control assembly is installed on the processing table and is used to adjust the wind speed of each group of fans, wherein the wind speed of the fans is adjusted by controlling the power of the fans; The control assembly is equipped with a real-adjustment module and a pre-adjustment module. The real-adjustment module is used to analyze the acquired temperature information to determine whether the cooling temperature at various locations on the casting surface is balanced. When it is unbalanced, a real-adjustment instruction is sent to adjust the power of the corresponding fan to control the blowing speed of the fan; the pre-adjustment module is used to further analyze the acquired temperature information under the condition that the cooling temperature at various locations is balanced, so as to determine potential temperature imbalance. When there is a potential imbalance, a pre-adjustment instruction is sent to adjust the power of the corresponding fan to fine-tune the blowing speed of the fan.

2. A processing method for metal casting production, characterized in that: The processing method is implemented by the processing equipment for metal casting production according to claim 1, and the processing method includes: Step 1: Place the metal casting on the processing table. According to the size of the metal casting, select an appropriate number of fans and install them on both sides of the metal casting to ensure that the cooling airflow of each set of fans can evenly cover the corresponding casting surface. Step 2: According to the cooling steps of the metal casting, determine the time and wind speed of each cooling stage, and then start the fan for air cooling; Step 3: Obtain the surface temperature of the metal casting in real time, and then analyze and determine whether the cooling temperature at various locations on the metal casting surface is balanced. If it is not balanced, generate a real-time adjustment instruction; Step 4: After determining that the cooling temperature is under a balanced condition, further analyze the acquired temperature information to determine potential temperature imbalance. If a potential imbalance exists, generate a pre-adjustment instruction. Step 5: Adjust the power of the corresponding fan according to the generated actual adjustment instruction and pre-adjustment instruction.

3. A processing method for producing metal castings according to claim 2, characterized in that: The method for determining whether the cooling temperature at various locations on the surface of the metal casting is balanced in step 3 is: According to the position of the fan, the surface of the metal casting is divided into N monitoring areas, and the temperature value of each monitoring area is obtained in real time. ; By formula Obtain the temperature deviation value of each monitoring area ; The temperature deviation value obtained The temperature deviates from the preset threshold range To compare: when When , it is determined that the cooling temperature here is unbalanced, and a real adjustment instruction is generated; in, as well as is the preset coefficient, is the preset standard temperature value of the jth monitoring area in the cooling stage, and , as well as The temperature deviation threshold is preset for this cooling phase.

4. A processing method for producing metal castings according to claim 3, characterized in that: The actual adjustment instruction includes a first increase instruction and a first decrease instruction: when When , the first increase instruction is generated; when , then the first decrease instruction is generated.

5. A processing method for producing metal castings according to claim 4, characterized in that: The method for adjusting the power of the corresponding fan according to the generated actual adjustment instruction in step 5 is: When the first increase instruction is generated, the formula Adjust the fan power to ; When the first reduction instruction is generated, the formula Adjust the fan power to ; in, is the current cooling power of the fan, The maximum power that the system can adjust. is the power conversion coefficient, is the thickness of the metal casting, is the thickness comparison value set, is the ambient temperature, is the set ambient temperature comparison value, as well as is the weight coefficient.

6. A processing method for producing metal castings according to claim 3, characterized in that: The method for generating the pre-adjustment instruction in step 4 is: When the cooling temperature is judged to be in equilibrium, the cooling stage of the monitoring area is The interval period is divided into m monitoring time periods, so as to formulate the temperature deviation value within the monitoring time period. Curve function that changes with time ; By formula Obtain warning value ; The warning value to be obtained and preset warning thresholds To compare: when When , it is determined that there is a potential imbalance, and a pre-adjustment instruction is generated; in, as well as is the preset coefficient, is the start time of the monitoring period, The end time of the monitoring period.

7. A processing method for producing metal castings according to claim 6, characterized in that: The method for adjusting the power of the corresponding fan according to the generated pre-adjustment instruction in step 5 is: When generating a pre-adjustment instruction, first determine The value of When , the second increase instruction is generated. When , a second reduction instruction is generated; When the second increase instruction is generated, the formula Adjust the fan power to ; At that time, the second reduction instruction is generated, and this time the formula Adjust the fan power to ;in, is another power conversion factor.

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