A production process of high-strength powder metallurgy automobile engine gear

Abstract

The application relates to the technical field of high-strength powder metallurgy automobile engine gear production, and discloses a high-strength powder metallurgy automobile engine gear production process, which comprises the following steps: metal powder is transmitted into a storage device through a transparent transmission pipeline; during the transmission of the metal powder, the position of a filling device is recorded as an initial position; after the transmission of the metal powder is completed, the metal powder in the filling device is filled into a mold; after the filling of the metal powder is completed, the filling device is vibrated; if the metal powder in the filling device reaches a filling standard, the filling device is moved to the initial position, and the powder in the mold is pressed downward to obtain a formed gear-shaped part; if the metal powder in the filling device does not reach the filling standard, a powder supplement area in the mold is obtained; the powder supplement area is supplemented with powder; the scheme effectively improves production efficiency and reduces production cost.

Description

Technical Field

[0001] This invention relates to the field of high-strength powder metallurgy automotive engine gear production technology, specifically a production process for high-strength powder metallurgy automotive engine gears. Background Technology

[0002] In the production process of high-strength powder metallurgy automotive engine gears, uniform filling and effective pressing of metal powder are key factors in ensuring product quality. Currently, conventional powder metallurgy processes face several challenges, such as uneven distribution of metal powder in the mold and inaccurate control of the filling process, which makes it difficult to meet the requirements for the strength and precision of the final gear.

[0003] In traditional powder metallurgy production processes, the filling of metal powder typically relies on manual operation. Manual filling easily leads to uneven powder distribution and makes it difficult to precisely control the amount of powder in each area, resulting in inconsistent strength and density of the formed parts, thus affecting the quality of the final product. Secondly, manual filling requires a large workforce, increasing labor intensity during production and increasing the risk of operator fatigue and errors due to improper operation, thereby affecting production efficiency and stability. Furthermore, manual operation has low precision, making it difficult to accurately control the amount and speed of powder filled each time, potentially leading to powder waste or insufficient filling. This is especially problematic in the production of high-strength, precision products, often failing to meet accuracy requirements and resulting in substandard product quality. Simultaneously, manual operation is susceptible to the influence of operator skills, experience, and attention, leading to poor consistency in each filling process and potentially significant differences between different batches of products, making it difficult to achieve stable product quality.

[0004] With the development of automation, the process of conveying and filling metal powder has gradually begun to adopt simple mechanical devices. Although these methods can improve the filling effect of powder to a certain extent, they cannot accurately control the uniformity and precision of filling, and are prone to local areas of insufficient or excessive powder, resulting in uneven strength of the molded parts.

[0005] When filling a mold with powder, insufficient filling can result in less powder in the mold than is required for pressing and forming. Consequently, the pressed and formed parts may not meet the requirements for subsequent processing. However, existing powder metallurgy processes cannot make accurate judgments about this and cannot replenish the metal powder in the mold in case of insufficient initial filling, which affects subsequent processing and causes powder waste. Summary of the Invention

[0006] This invention provides a manufacturing process for high-strength powder metallurgy automotive engine gears, which helps to solve the problems mentioned in the background art.

[0007] This invention provides the following technical solution: Optionally, a manufacturing process for high-strength powder metallurgy automotive engine gears, characterized in that it includes:

[0008] Metal powder is transported to the storage equipment through a transparent conveying pipe;

[0009] The transparent transmission pipe and the storage device together constitute a filling device;

[0010] During the metal powder transfer process, the location of the filling device is recorded as the initial position;

[0011] After the metal powder transfer is completed, the metal powder in the filling equipment is filled into the mold;

[0012] After the metal powder filling is completed, the filling equipment is vibrated, specifically as follows:

[0013] For the two open ends of the transparent transmission pipe, the open end closer to the storage equipment is designated as the vibrating end;

[0014] A uniform vibration is applied simultaneously across the entire circumference of the vibrating end;

[0015] Get the fill judgment value T;

[0016] For the filling equipment after vibration, the filling judgment value T is used to determine whether the metal powder in the filling equipment meets the filling standard.

[0017] If the metal powder in the filling equipment reaches the filling standard, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part;

[0018] If the metal powder in the filling equipment does not meet the filling standard, it is determined that the metal powder in the mold does not meet the pressing and molding conditions.

[0019] When the metal powder in the mold does not meet the pressing and molding conditions, the filling equipment is controlled to move to the initial position and the metal powder in the mold is vibrated.

[0020] For the metal powder inside the mold after vibration, obtain the powder replenishment area inside the mold;

[0021] Replenish powder in the powder replenishment area;

[0022] After the powder is replenished, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part.

[0023] Optionally, after the metal powder transfer is completed, the metal powder in the filling device is filled into the mold, specifically as follows:

[0024] Once the powder transfer is complete, stop the powder transfer.

[0025] The filling device is moved at a constant speed to directly above the mold by a pneumatic rod.

[0026] The moment when the filling device begins to move is recorded as the initial moment;

[0027] The moment when the filling equipment comes into contact with the mold is recorded as the termination time;

[0028] The time difference between the termination time and the initial time is denoted as T. A ;

[0029] Once the filling device is positioned directly above the mold, it fills the mold with the powder contained within it.

[0030] Optionally, obtaining the filling judgment value T specifically involves:

[0031] The cross-section at the junction of the transparent transmission pipe and the storage equipment is defined as the bottom surface of the transmission pipe.

[0032] After each metal powder transfer is completed, the volume of metal powder in the filling device is fixed at V;

[0033] The volume of metal powder required for a single pressing molding is denoted as V1;

[0034] After metal powder of volume V1 is filled into the mold in the filling equipment, metal powder of volume V1 is transferred into the filling equipment so that the volume of metal powder in the filling equipment after the transfer is completed is V.

[0035] When metal powder with a volume of V1 is filled into the mold in the filling device, metal powder with a volume of V-V1 is present in the filling device. The image is acquired by rotating around the central axis of the transparent transmission pipe 360°.

[0036] For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images;

[0037] Obtain the distance between each pixel at the boundary and the bottom surface of the transmission, and record the average value of the obtained distances as T.

[0038] Optionally, the step of determining whether the metal powder inside the filling equipment meets the filling standard after vibration is specifically as follows:

[0039] Image acquisition is performed by rotating around the central axis of the transparent transmission pipe in a 360° radius.

[0040] For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images;

[0041] Obtain the distance between each pixel at the boundary and the bottom surface of the transmission plane, and denote the maximum and minimum distances as X. MAX and X MIN ;

[0042] Get X MAX With X MIN The average value is denoted as X, where X = (X MAX +X MIN )÷2;

[0043] Compare the values ​​of X and T;

[0044] If X≤T, then the metal powder in the filling equipment is considered to have met the filling standard;

[0045] If X > T, then the metal powder in the filling equipment is considered not to meet the filling standard.

[0046] Optionally, the step of determining the powder replenishment area within the mold after vibration specifically involves:

[0047] The image of the mold is captured directly above it and recorded as the supplementary image area.

[0048] Image processing technology is used to process images acquired in the supplementary area to identify areas within the mold where collapse has occurred.

[0049] The area where the collapse occurred is designated as the powder replenishment area;

[0050] The direction in which the filling device moves from its initial position to directly above the mold is denoted as the filling direction.

[0051] For the inner cavity of the mold, the inner cavity of the mold is divided into two spaces of equal volume by a plane perpendicular to the filling direction. The divided space is denoted as the powder replenishment space.

[0052] Based on the positional relationship between the two powder replenishment spaces and the filling equipment, the powder replenishment space closer to the filling equipment is designated as replenishment space number one, and the powder replenishment space farther away from the filling equipment is designated as replenishment space number two.

[0053] Obtain an image of the transparent transmission pipe and determine the distribution type of the metal powder inside the transparent transmission pipe.

[0054] Optionally, acquiring an image of the transparent transmission channel and determining the distribution type of the metal powder within the transparent transmission channel further includes:

[0055] S1. Push the filling equipment to move along the filling direction;

[0056] S2. After the filling equipment starts moving, the diameter of the bottom surface of the conveyor that is parallel to the filling direction is recorded as diameter number one, and a section number one perpendicular to the bottom surface of the conveyor is made through diameter number one.

[0057] S3. Obtain the interface between the metal powder and the transparent transmission channel;

[0058] S4. The boundary has two intersection points with section one;

[0059] S5. Obtain the distances between the two intersection points and the bottom surface of the transmission, and compare the values ​​of the two distances;

[0060] S6. Record the intersection point with the larger value as point 1, and the intersection point with the smaller value as point 2.

[0061] S7. Obtain the positional relationship between point 1 and point 2. If point 1 is farther away from the mold than point 2, record the distribution type of metal powder in the transparent transmission pipe as a type 1 distribution.

[0062] S8. If point 1 is closer to the mold than point 2, the distribution type of the metal powder in the transparent transmission pipe is recorded as a type II distribution.

[0063] Based on the distribution type of metal powder in the open transmission pipeline and the location of the powder replenishment area, the powder in the mold is replenished.

[0064] Optionally, the step of replenishing the powder in the mold according to the distribution type of the metal powder in the transmission pipe and the location of the powder replenishment area specifically involves:

[0065] If the distribution type of the metal powder in the transparent transmission pipe is type II, then the filling device is moved to the top of the first replenishment space to replenish the metal powder in the mold.

[0066] If the distribution type of the metal powder in the transparent transfer pipe is a type 1 distribution, then the filling device is moved and an acceleration is applied to the filling device, and the applied acceleration is opposite to the filling direction;

[0067] The magnitude of acceleration is obtained by adjusting the powder distribution model.

[0068] During the acceleration process, when the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, the acceleration is stopped.

[0069] After the acceleration is applied, the filling device is moved directly above the mold to replenish the metal powder inside the mold.

[0070] Optionally, the magnitude of the acceleration is obtained through a powder distribution adjustment model, specifically:

[0071] When the filling device begins to move, an acceleration in the opposite direction to the filling direction is applied to it;

[0072] The moment when the filling equipment begins to move is recorded as the start time;

[0073] Starting from the beginning time, after the beginning time, there will be an interval T from the beginning time. B The time at which T is recorded is called the final time, where T is the final time. B <T A ;

[0074] Real-time acquisition of the distribution type of metal powder inside the transmission pipeline;

[0075] If the distribution type of the metal powder in the transparent transmission pipe is a type I distribution, then increase the magnitude of the acceleration to ensure that the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution before reaching the end time.

[0076] When the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, stop applying acceleration and record the magnitude of the acceleration at this time.

[0077] The present invention has the following beneficial effects:

[0078] 1. The production process of this high-strength powder metallurgy automotive engine gear utilizes a transparent transmission pipeline to transport metal powder to the storage equipment. This transparent pipeline ensures greater control and visibility of the powder transfer process, avoiding the uneven powder distribution caused by human error in traditional manual filling. Through the transparent pipeline, operators can monitor the filling process in real time, promptly identifying and adjusting any issues. Furthermore, applying uniform vibration to the vibrating end of the transparent transmission pipeline after filling effectively promotes a more uniform distribution of the metal powder during the filling process. The uniform distribution of metal powder within the transparent transmission pipeline after vibration allows for timely assessment of whether the required powder concentration has been achieved. The filling standard is determined by the following process: If the height of the metal powder in the transparent transfer pipe is lower than or equal to the set filling judgment value T, it means that there is enough metal powder in the transparent transfer pipe to fill the mold, and the filling is considered complete. If the height of the metal powder in the transparent transfer pipe is higher than the set filling judgment value T, the filling is considered incomplete, meaning that there is a certain space in the mold that has not been filled by powder. Therefore, it is necessary to vibrate the powder in the mold to cause the powder in the mold to collapse. Through precise control of the metal powder by vibration, the powder filling is made to better meet the pressing and molding conditions. The resulting gear parts have better performance in terms of strength and precision, effectively improving production efficiency and reducing production costs.

[0079] 2. This high-strength powder metallurgy automotive engine gear manufacturing process utilizes a pneumatic rod to move the filling equipment directly above the mold for precise filling. This ensures a more accurate and reliable filling process, avoiding uneven filling caused by inaccurate or unstable positioning during manual operation. Precise control of the pneumatic rod allows the filling equipment to precisely position itself above the mold, achieving accurate powder distribution and eliminating uncertainties and human errors inherent in manual filling. Furthermore, the automatic filling process, which stops powder transport, avoids the possibility of excessive or insufficient powder application in traditional methods, thus optimizing production efficiency and ensuring consistent quality for every part. In large-scale production, this automated precision filling solution significantly improves production stability and efficiency, reduces production cycles, lowers labor costs, and enhances the overall competitiveness of the enterprise.

[0080] 3. The production process of this high-strength powder metallurgy automotive engine gear incorporates image processing technology to monitor and analyze the filled metal powder in real time. This effectively determines whether the filling meets the standards, avoiding the inefficiency and errors of traditional manual inspection. By acquiring images of the transparent transmission pipe in real time and combining them with advanced image processing technology, the distribution of metal powder within the transparent transmission pipe can be accurately extracted. The filling effect is judged by comparing it with the set filling judgment value. This high-precision detection method can promptly report problems in the filling process, such as uneven powder distribution or insufficient filling, helping the production line to quickly adjust parameters or take supplementary measures, avoiding the uncertainty caused by visual inspection or random sampling in traditional methods. Image processing technology makes the entire filling process more automated and intelligent, reducing human intervention and misjudgment, while improving the accuracy and consistency of filling. The stability and pass rate of the final product are significantly improved, providing more reliable technical support for the mass production of powder metallurgy parts.

[0081] 4. This high-strength powder metallurgy automotive engine gear manufacturing process solves the problem of uneven powder distribution within the mold in traditional production processes by introducing automatic acquisition and replenishment measures for powder replenishment areas within the mold. In this method, image processing technology is used to identify the powder distribution within the mold in real time, pinpointing areas of powder collapse and determining their location. Combined with the powder distribution within the filling equipment, different filling schemes are proposed: If there is more powder distributed on the side of the transparent transmission pipe closer to the mold, the filling equipment can be moved directly above the mold to replenish the powder. When the filling equipment contacts the mold, the powder distributed on the side of the transparent transmission pipe closer to the mold is filled into the mold, completing the powder replenishment and ensuring a relatively uniform powder distribution within the transparent transmission pipe. If there is more powder distributed on the side of the transparent transmission pipe farther from the mold, the powder distribution within the transparent transmission pipe needs to be adjusted. This scheme greatly reduces the need for manual adjustments, making the production process more automated and intelligent. Especially in cases of uneven powder distribution, precise replenishment area identification and intelligent replenishment ensure uniform powder distribution within the mold, thereby ensuring the consistency and high quality of the molded parts.

[0082] 5. In the production process of this high-strength powder metallurgy automotive engine gear, when there is a large amount of powder distributed on the side of the transparent transmission pipe away from the mold, the powder distribution in the filling equipment is adjusted by applying acceleration. During the uniform movement of the filling equipment, a reverse acceleration is applied. Under the action of inertia, the powder originally distributed on the side of the transparent transmission pipe away from the mold will move to the side of the transparent transmission pipe away from the mold. This ensures that in the subsequent replenishment process, when the filling equipment contacts the mold, the powder distributed on the side of the transparent transmission pipe closer to the mold is filled into the mold. This not only completes the replenishment of powder but also ensures that the powder distribution in the transparent transmission pipe is relatively uniform. The magnitude of the acceleration is obtained by pretreatment, which can significantly reduce repeated operations in the production process and improve overall production efficiency. This instantaneous response capability can help the production line save time, thereby improving production efficiency and saving labor costs. Attached Figure Description

[0083] Figure 1 This is a schematic diagram showing the positions of the filling device and the mold during powder transfer according to the present invention.

[0084] Figure 2 The diagram shows a type of powder distribution within the storage device during powder replenishment, as per the present invention.

[0085] Figure 3 The diagram shows a type II distribution of powder within the storage device during powder replenishment according to the present invention. Detailed Implementation

[0086] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0087] Example 1: A manufacturing process for high-strength powder metallurgy automotive engine gears, characterized by comprising:

[0088] refer to Figure 1 The metal powder is transported to the storage equipment through a transparent transmission pipe;

[0089] Transparent transfer pipes ensure that the metal powder transfer process is more controllable and visible, avoiding the problem of uneven powder distribution caused by human operation in traditional manual filling. Through transparent pipes, operators can monitor the filling process in real time, identify problems in time, and make adjustments.

[0090] The transparent transmission pipe and the storage device together constitute a filling device;

[0091] During the metal powder transfer process, the location of the filling device is recorded as the initial position;

[0092] After the metal powder transfer is completed, the metal powder in the filling equipment is filled into the mold;

[0093] After the metal powder filling is completed, the filling equipment is vibrated, specifically as follows:

[0094] For the two open ends of the transparent transmission pipe, the open end closer to the storage equipment is designated as the vibrating end;

[0095] A uniform vibration is applied simultaneously across the entire circumference of the vibrating end;

[0096] In addition, after filling is completed, applying uniform vibration at the vibrating end of the transparent transfer pipe can effectively promote a more uniform distribution of metal powder during the filling process. Furthermore, the uniform distribution of metal powder in the transparent transfer pipe after vibration can help determine whether the metal powder meets the filling standard in a timely manner.

[0097] Get the fill judgment value T;

[0098] For the filling equipment after vibration, the filling judgment value T is used to determine whether the metal powder in the filling equipment meets the filling standard.

[0099] If the metal powder in the filling equipment reaches the filling standard, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part;

[0100] If the metal powder in the filling equipment does not meet the filling standard, it is determined that the metal powder in the mold does not meet the pressing and molding conditions.

[0101] When the metal powder in the mold does not meet the pressing and molding conditions, the filling equipment is controlled to move to the initial position and the metal powder in the mold is vibrated.

[0102] For the metal powder inside the mold after vibration, obtain the powder replenishment area inside the mold;

[0103] Replenish powder in the powder replenishment area;

[0104] After the powder is replenished, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part;

[0105] By using a pneumatic rod to move the filling equipment directly above the mold for precise filling, the filling process is made more accurate and reliable. This avoids uneven filling caused by inaccurate or unstable positioning during manual operation. Precise control of the pneumatic rod allows the filling equipment to stay precisely above the mold, achieving accurate powder distribution and eliminating the uncertainties and human errors inherent in manual filling. Furthermore, the automatic filling process stops powder transport, preventing over- or under-powdering that can occur with traditional methods. This optimizes production efficiency and ensures consistent quality for every part. In large-scale production, this automated precision filling solution significantly improves production stability and efficiency, reduces production cycles, lowers labor costs, and enhances the overall competitiveness of the enterprise.

[0106] After the metal powder transfer is completed, the metal powder in the filling device is filled into the mold, specifically as follows:

[0107] Once the powder transfer is complete, stop the powder transfer.

[0108] The filling device is moved at a constant speed to directly above the mold by a pneumatic rod.

[0109] The moment when the filling device begins to move is recorded as the initial moment;

[0110] The moment when the filling equipment comes into contact with the mold is recorded as the termination time;

[0111] The time difference between the termination time and the initial time is denoted as T. A ;

[0112] Once the filling device is positioned directly above the mold, it fills the mold with the powder contained within it.

[0113] The specific steps for obtaining the filling judgment value T are as follows:

[0114] The cross-section at the junction of the transparent transmission pipe and the storage equipment is defined as the bottom surface of the transmission pipe.

[0115] After each metal powder transfer is completed, the volume of metal powder in the filling device is fixed at V;

[0116] The volume of metal powder required for a single pressing molding is denoted as V1;

[0117] After metal powder of volume V1 is filled into the mold in the filling equipment, metal powder of volume V1 is transferred into the filling equipment so that the volume of metal powder in the filling equipment after the transfer is completed is V.

[0118] When metal powder with a volume of V1 is filled into the mold in the filling device, metal powder with a volume of V-V1 is present in the filling device. The image is acquired by rotating around the central axis of the transparent transmission pipe 360°.

[0119] For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images;

[0120] Obtain the distance between each pixel at the boundary and the bottom surface of the transmission, and record the average value of the obtained distances as T.

[0121] The process of determining whether the metal powder inside the vibrating filling equipment meets the filling standard is as follows:

[0122] Image acquisition is performed by rotating around the central axis of the transparent transmission pipe in a 360° radius.

[0123] For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images;

[0124] Obtain the distance between each pixel at the boundary and the bottom surface of the transmission plane, and denote the maximum and minimum distances as X. MAX and X MIN ;

[0125] Get X MAX With X MIN The average value is denoted as X, where X = (X MAX +X MIN )÷2;

[0126] Compare the values ​​of X and T;

[0127] If X≤T, and the height of the metal powder in the transparent transfer pipe is lower than or equal to the set filling judgment value T, it means that there is enough metal powder in the transparent transfer pipe to fill the mold, and the metal powder in the filling equipment is considered to have reached the filling standard.

[0128] If X > T, and the height of the metal powder in the transparent transmission pipe is higher than the set filling judgment value T, then the filling is considered incomplete. That is, there is a certain space in the mold that has not been filled by powder, and the metal powder in the filling equipment is considered not to have met the filling standard.

[0129] Specifically, to determine the powder replenishment area within the mold after vibration of the metal powder inside, the following steps are taken:

[0130] The image of the mold is captured directly above it and recorded as the supplementary image area.

[0131] Image processing technology is used to process images acquired in the supplementary area to identify areas within the mold where collapse has occurred.

[0132] The area where the collapse occurred is designated as the powder replenishment area;

[0133] The direction in which the filling device moves from its initial position to directly above the mold is denoted as the filling direction.

[0134] For the inner cavity of the mold, the inner cavity of the mold is divided into two spaces of equal volume by a plane perpendicular to the filling direction. The divided space is denoted as the powder replenishment space.

[0135] Based on the positional relationship between the two powder replenishment spaces and the filling equipment, the powder replenishment space closer to the filling equipment is designated as replenishment space number one, and the powder replenishment space farther away from the filling equipment is designated as replenishment space number two.

[0136] Obtain an image of the transparent transmission pipe and determine the distribution type of the metal powder inside the transparent transmission pipe.

[0137] The step of acquiring an image of the transparent transmission channel and determining the distribution type of the metal powder within the transparent transmission channel further includes:

[0138] S1. Push the filling equipment to move along the filling direction;

[0139] S2. After the filling equipment starts moving, the diameter of the bottom surface of the conveyor that is parallel to the filling direction is recorded as diameter number one, and a section number one perpendicular to the bottom surface of the conveyor is made through diameter number one.

[0140] S3. Obtain the interface between the metal powder and the transparent transmission channel;

[0141] S4. The boundary has two intersection points with section one;

[0142] S5. Obtain the distances between the two intersection points and the bottom surface of the transmission, and compare the values ​​of the two distances;

[0143] S6. Record the intersection point with the larger value as point 1, and the intersection point with the smaller value as point 2.

[0144] S7, Reference Figure 2 Obtain the positional relationship between point 1 and point 2. If point 1 is farther away from the mold than point 2, record the distribution type of the metal powder in the transparent transmission pipe as a type 1 distribution.

[0145] S8, Reference Figure 3 If point 1 is closer to the mold than point 2, the distribution type of the metal powder in the transparent transmission pipe is recorded as a type II distribution.

[0146] Based on the distribution type of metal powder in the open transmission pipeline and the location of the powder replenishment area, the powder in the mold is replenished.

[0147] The powder in the mold is replenished based on the distribution type of the metal powder in the open transmission pipe and the location of the powder replenishment area, specifically as follows:

[0148] If the distribution type of the metal powder in the transparent transmission pipe is type II, then push the filling device to move directly above the No. 1 replenishment space to replenish the metal powder in the mold;

[0149] If the distribution type of the metal powder in the transparent transfer pipe is a type 1 distribution, then the filling device is moved and an acceleration is applied to the filling device, and the applied acceleration is opposite to the filling direction;

[0150] The magnitude of acceleration is obtained by adjusting the powder distribution model.

[0151] During the acceleration process, when the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, the acceleration is stopped.

[0152] After the acceleration is applied, the filling device is moved to directly above the mold to replenish the metal powder inside the mold;

[0153] By introducing automatic acquisition and replenishment measures for powder replenishment areas within the mold, the problem of uneven powder distribution within the mold in traditional production processes is solved. This method uses image processing technology to identify the powder distribution within the mold in real time, pinpointing areas of powder collapse and determining their location. Based on the powder distribution within the filling device, different filling schemes are proposed: If there is more powder on the side of the transparent transfer pipe closer to the mold, the filling device can be moved directly above the mold to replenish the powder. When the filling device contacts the mold, the powder on the side of the transparent transfer pipe closer to the mold is filled, completing the powder replenishment and ensuring a relatively uniform powder distribution within the transparent transfer pipe. If there is more powder on the side of the transparent transfer pipe farther from the mold, the powder distribution within the transparent transfer pipe needs to be adjusted. This scheme significantly reduces the need for manual adjustments, making the production process more automated and intelligent. Especially in cases of uneven powder distribution, precise replenishment area identification and intelligent replenishment ensure uniform powder distribution within the mold, thereby guaranteeing the consistency and high quality of the molded parts.

[0154] The magnitude of the acceleration is obtained through a powder distribution adjustment model, specifically:

[0155] When the filling device begins to move, an acceleration in the opposite direction to the filling direction is applied to it;

[0156] The moment when the filling equipment begins to move is recorded as the start time;

[0157] Starting from the beginning time, after the beginning time, there will be an interval T from the beginning time. B The time at which T is recorded is called the final time, where T is the final time. B <T A ;

[0158] Real-time acquisition of the distribution type of metal powder inside the transmission pipeline;

[0159] If the distribution type of the metal powder in the transparent transmission pipe is a type I distribution, then increase the magnitude of the acceleration to ensure that the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution before reaching the end time.

[0160] When the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, stop applying acceleration and record the magnitude of the acceleration at this time.

[0161] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0162] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A manufacturing process for high-strength powder metallurgy automotive engine gears, characterized in that: include: Metal powder is transported to the storage equipment through a transparent conveying pipe; The transparent transmission pipe and the storage device together constitute a filling device; During the metal powder transfer process, the location of the filling device is recorded as the initial position; After the metal powder transfer is completed, the metal powder in the filling equipment is filled into the mold; After the metal powder filling is completed, the filling equipment is vibrated, specifically as follows: For the two open ends of the transparent transmission pipe, the open end closer to the storage equipment is designated as the vibrating end; A uniform vibration is applied simultaneously across the entire circumference of the vibrating end; Get the fill judgment value T; The cross-section at the junction of the transparent transmission pipe and the storage equipment is defined as the bottom surface of the transmission pipe. After each metal powder transfer is completed, the volume of metal powder in the filling device is fixed at V; The volume of metal powder required for a single pressing molding is denoted as V1; After metal powder of volume V1 is filled into the mold in the filling equipment, metal powder of volume V1 is transferred into the filling equipment so that the volume of metal powder in the filling equipment after the transfer is completed is V. When metal powder with a volume of V1 is filled into the mold in the filling device, metal powder with a volume of V-V1 is present in the filling device. The image is acquired by rotating around the central axis of the transparent transmission pipe 360°. For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images; Obtain the distance between each pixel at the boundary and the bottom surface of the transmission, and record the average value of the obtained distances as T; For the filling equipment after vibration, the filling judgment value T is used to determine whether the metal powder in the filling equipment meets the filling standard. If the metal powder in the filling equipment reaches the filling standard, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part; If the metal powder in the filling equipment does not meet the filling standard, it is determined that the metal powder in the mold does not meet the pressing and molding conditions. When the metal powder in the mold does not meet the pressing and molding conditions, the filling equipment is controlled to move to the initial position and the metal powder in the mold is vibrated. For the metal powder inside the mold after vibration, obtain the powder replenishment area inside the mold; Replenish powder in the powder replenishment area; After the powder is replenished, the filling equipment is moved to the initial position and the powder in the mold is pressed down to obtain the formed gear-shaped part.

2. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 1, characterized in that: After the metal powder transfer is completed, the metal powder in the filling device is filled into the mold, specifically as follows: Once the powder transfer is complete, stop the powder transfer. The filling device is moved at a constant speed to directly above the mold by a pneumatic rod. The moment when the filling device begins to move is recorded as the initial moment; The moment when the filling equipment comes into contact with the mold is recorded as the termination time; The time difference between the termination time and the initial time is denoted as T. A ; Once the filling device is positioned directly above the mold, it fills the mold with the powder contained within it.

3. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 1, characterized in that: The process of determining whether the metal powder inside the vibrating filling equipment meets the filling standard is as follows: Image acquisition is performed by rotating around the central axis of the transparent transmission pipe in a 360° radius. For the acquired images, image processing techniques are used to mark the boundary between the metal powder and the transparent transmission channel in the images; Obtain the distance between each pixel at the boundary and the bottom surface of the transmission plane, and denote the maximum and minimum distances as X. MAX and X MIN ; Get X MAX With X MIN The average value is denoted as X, where X = (X MAX +X MIN )÷2; Compare the values ​​of X and T; If X≤T, then the metal powder in the filling equipment is considered to have met the filling standard; If X > T, then the metal powder in the filling equipment is considered not to meet the filling standard.

4. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 1, characterized in that: Specifically, to determine the powder replenishment area within the mold after vibration of the metal powder inside, the following steps are taken: The image of the mold is captured directly above it and recorded as the supplementary image area. Image processing technology is used to process images acquired in the supplementary area to identify areas within the mold where collapse has occurred. The area where the collapse occurred is designated as the powder replenishment area; The direction in which the filling device moves from its initial position to directly above the mold is denoted as the filling direction. For the inner cavity of the mold, the inner cavity of the mold is divided into two spaces of equal volume by a plane perpendicular to the filling direction. The divided space is denoted as the powder replenishment space. Based on the positional relationship between the two powder replenishment spaces and the filling equipment, the powder replenishment space closer to the filling equipment is designated as replenishment space number one, and the powder replenishment space farther away from the filling equipment is designated as replenishment space number two. Obtain an image of the transparent transmission pipe and determine the distribution type of the metal powder inside the transparent transmission pipe.

5. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 4, characterized in that: The step of acquiring an image of the transparent transmission channel and determining the distribution type of the metal powder within the transparent transmission channel further includes: S1. Push the filling equipment to move along the filling direction; S2. After the filling equipment starts moving, the diameter of the bottom surface of the conveyor that is parallel to the filling direction is recorded as diameter number one, and a section number one perpendicular to the bottom surface of the conveyor is made through diameter number one. S3. Obtain the interface between the metal powder and the transparent transmission channel; S4. The boundary has two intersection points with section one; S5. Obtain the distances between the two intersection points and the bottom surface of the transmission, and compare the values ​​of the two distances; S6. Record the intersection point with the larger value as point 1, and the intersection point with the smaller value as point 2. S7. Obtain the positional relationship between point 1 and point 2. If point 1 is farther away from the mold than point 2, record the distribution type of the metal powder in the transparent transmission pipe as a type 1 distribution. S8. If point 1 is closer to the mold than point 2, the distribution type of the metal powder in the transparent transmission pipe is recorded as a type II distribution. Based on the distribution type of metal powder in the open transmission pipeline and the location of the powder replenishment area, the powder in the mold is replenished.

6. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 5, characterized in that: The powder in the mold is replenished based on the distribution type of the metal powder in the open transmission pipe and the location of the powder replenishment area, specifically as follows: If the distribution type of the metal powder in the transparent transmission pipe is type II, then push the filling device to move directly above the No. 1 replenishment space to replenish the metal powder in the mold; If the distribution type of the metal powder in the transparent transfer pipe is a type 1 distribution, then the filling device is moved and an acceleration is applied to the filling device, and the applied acceleration is opposite to the filling direction; The magnitude of acceleration is obtained by adjusting the powder distribution model. During the acceleration process, when the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, the acceleration is stopped. After the acceleration is applied, the filling device is moved to directly above the mold to replenish the metal powder inside the mold.

7. The manufacturing process for high-strength powder metallurgy automotive engine gears according to claim 6, characterized in that: The magnitude of the acceleration is obtained through a powder distribution adjustment model, specifically: When the filling device begins to move, an acceleration in the opposite direction to the filling direction is applied to it; The moment when the filling equipment begins to move is recorded as the start time; Starting from the beginning time, after the beginning time, there will be an interval T from the beginning time. B The time at which T is recorded is called the final time, where T is the final time. B <T A ; Real-time acquisition of the distribution type of metal powder inside the transmission pipeline; If the distribution type of the metal powder in the transparent transmission pipe is a type I distribution, then increase the magnitude of the acceleration to ensure that the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution before reaching the end time. When the distribution type of the metal powder in the transparent transmission pipe changes from a type I distribution to a type II distribution, stop applying acceleration and record the magnitude of the acceleration at this time.

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