Production process of high-strength powder metallurgy automobile engine gear

Abstract

The invention 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 steps that metal powder is conveyed into material storage equipment through a transparent conveying pipeline; in the metal powder conveying process, the position where filling equipment is located is marked as the initial position; after conveying of the metal powder is completed, the mold is filled with the metal powder in the filling equipment; after filling of the metal powder is completed, the filling equipment is vibrated; if the metal powder in the filling equipment reaches the filling standard, the filling equipment is moved to the initial position, the powder in the mold is pressed downwards, and a formed gear-shaped part is obtained; if the metal powder in the filling equipment does not reach the filling standard, a powder supplementing area in the mold is obtained; supplementing powder to the powder supplementing area; according to the scheme, the production efficiency is effectively improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of the production of high-strength powder metallurgy automotive engine gears, and specifically to a production process for high-strength powder metallurgy automotive engine gears. Background Art

[0002] In the production process of high-strength powder metallurgy automotive engine gears, the uniform filling and effective compaction molding of metal powders are one of the key factors to ensure product quality; currently, conventional powder metallurgy processes face multiple challenges, such as uneven distribution of metal powders in the mold and inaccurate control during the filling process, resulting in the strength and precision of the finally formed gears being difficult to meet the requirements.

[0003] In traditional powder metallurgy production processes, the filling of metal powders usually relies on manual operations. Manual filling easily leads to uneven powder distribution and it is difficult to accurately control the powder amount in each area, resulting in inconsistent strength and density of the formed parts, thereby affecting the quality of the final product; secondly, manual filling requires a large amount of manual labor, increasing the labor intensity during the production process, and it is also prone to operator fatigue and mistakes due to improper operation, thus affecting production efficiency and stability; in addition, the accuracy of manual operations is relatively low, and it is difficult to accurately control the powder amount and filling speed for each filling, which may lead to powder waste or insufficient filling. Especially in the production of high-strength and precision products, it often fails to meet the precision requirements, resulting in unqualified finished product quality; at the same time, manual operations are easily affected by factors such as operator skills, experience, and attention, resulting in poor consistency during each filling process, and there may be significant differences between products of different batches, making it difficult to achieve stable product quality.

[0004] With the development of automation, simple mechanical devices have gradually been adopted for the transmission and filling processes of metal powders. Although these methods can improve the filling effect of powders to a certain extent, they cannot accurately control the uniformity and precision of filling, and it is easy to have insufficient or excessive powder in local areas, resulting in uneven strength of the formed parts.

[0005] When filling powders into the mold, if the filling is insufficient, it will lead to less powder in the mold than the required amount during the downward compaction molding, and then the parts after downward compaction molding will not meet the subsequent processing requirements. However, the existing powder metallurgy processing technology cannot make an accurate judgment on this, and it is also unable to supplement the metal powders in the mold in the case of insufficient initial filling, affecting the subsequent processing technology and causing powder waste. Summary of the Invention

[0006] The present invention provides a production process for high-strength powder metallurgy automotive engine gears to help solve the problems mentioned in the above background art.

[0007] The present invention provides the following technical solutions: Optionally, a production process for high-strength powder metallurgy automotive engine gears, characterized by comprising:

[0008] Transmitting metal powder through a transparent transmission pipeline into a storage device;

[0009] The transparent transmission pipeline and the storage device form a filling device;

[0010] During the transmission of the metal powder, the position where the filling device is located is recorded as the initial position;

[0011] After the transmission of the metal powder is completed, filling the metal powder in the filling device into a mold;

[0012] After the metal powder is filled, vibrating the filling device, specifically:

[0013] For the two open ends of the transparent transmission pipeline, the open end close to the storage device is recorded as the vibrating end;

[0014] Applying uniform vibration simultaneously on the entire circumference of the vibrating end;

[0015] Obtaining a filling judgment value T;

[0016] For the filling device after vibration, judging whether the metal powder in the filling device meets the filling standard according to the filling judgment value T;

[0017] If the metal powder in the filling device meets the filling standard, moving the filling device to the initial position and pressing the powder in the mold to obtain a formed gear-shaped part;

[0018] If the metal powder in the filling device does not meet the filling standard, it is determined that the metal powder in the mold does not meet the conditions for pressing and forming;

[0019] When the metal powder in the mold does not meet the conditions for pressing and forming, controlling the filling device to move to the initial position and vibrating the metal powder in the mold;

[0020] For the metal powder in the mold after vibration, obtaining the powder replenishment area in the mold;

[0021] Replenishing powder to the powder replenishment area;

[0022] After the powder replenishment is completed, moving the filling device to the initial position and pressing the powder in the mold to obtain a formed gear-shaped part.

[0023] Optionally, when the transmission of the metal powder is completed, filling the metal powder in the filling device into the mold, specifically:

[0024] After the powder transfer is completed, stop the powder transfer;

[0025] Use a pneumatic rod to push the filling device to move uniformly directly above the mold;

[0026] Record the moment when the filling device starts to move as the initial moment;

[0027] Record the moment when the filling device contacts the mold as the termination moment;

[0028] Obtain the time difference between the termination moment and the initial moment, denoted as T A ;

[0029] After the filling device moves directly above the mold, fill the powder in the filling device into the mold.

[0030] Optionally, the obtaining of the filling judgment value T is specifically as follows:

[0031] Take the cross-section at the junction of the transparent transfer pipeline and the storage device as the transfer bottom surface;

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

[0033] Denote the volume of metal powder required for a single pressing and forming as V 1 ;

[0034] When the metal powder with a volume of V 1 in the filling device is filled into the mold, transfer metal powder with a volume of V 1 into the filling device so that the volume of metal powder in the filling device after the transfer is V;

[0035] When the metal powder with a volume of V 1 in the filling device is filled into the mold, there is metal powder with a volume of V - V 1 in the filling device. Perform image acquisition by rotating 360° around the central axis of the transparent transfer pipeline;

[0036] For the acquired image, mark the junction between the metal powder and the transparent transfer pipeline through image processing technology;

[0037] Obtain the distance between each pixel point at the junction and the transfer bottom surface, and denote the average value of the obtained distances as T.

[0038] Optionally, for the filling device after vibration, judging whether the metal powder in the filling device meets the filling standard is specifically as follows:

[0039] Perform image acquisition by rotating 360° around the central axis of the transparent transfer pipeline;

[0040] For the collected image, through image processing technology, mark the boundary between the metal powder and the transparent transmission pipeline in the image;

[0041] Obtain the distances from each pixel point at the boundary to the transmission bottom surface, and record the maximum and minimum distances as X MAX and X MIN ;

[0042] Obtain the average value of X MAX and X MIN , and record it as X, where X = (X MAX + X MIN )÷2;

[0043] Compare the values of X and T;

[0044] If X ≤ T, it is determined that the metal powder in the filling device meets the filling standard;

[0045] If X > T, it is determined that the metal powder in the filling device does not meet the filling standard.

[0046] Optionally, for the metal powder in the vibrated mold, obtaining the powder replenishment area in the mold specifically includes:

[0047] Obtain an image of the mold directly above the mold, and record it as the replenishment area acquisition image;

[0048] Process the replenishment area acquisition image through image processing technology to identify the area where collapse occurs in the mold;

[0049] Record the area where collapse occurs as the powder replenishment area;

[0050] Obtain the moving direction of the filling device from the initial position to directly above the mold, and record it as the filling direction;

[0051] For the inner cavity of the mold, divide the inner cavity of the mold into two spaces with equal volume by a plane perpendicular to the filling direction, and record the divided spaces as powder replenishment spaces;

[0052] According to the positional relationship between the two powder replenishment spaces and the filling device, record the powder replenishment space close to the filling device as the first replenishment space, and record the powder replenishment space far from the filling device as the second replenishment space;

[0053] Obtain an image of the transparent transmission pipeline and judge the distribution type of the metal powder in the transparent transmission pipeline.

[0054] Optionally, the obtaining an image of the transparent transmission pipeline and judging the distribution type of the metal powder in the transparent transmission pipeline further includes:

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

[0056] S2. After the filling device starts to move, denote the diameter parallel to the filling direction among the diameters of the transmission bottom surface as the first diameter, and make a first cross-section perpendicular to the transmission bottom surface through the first diameter;

[0057] S3. Obtain the intersection of the metal powder and the transparent transmission pipeline;

[0058] S4. There are two intersections between the intersection and the first cross-section;

[0059] S5. Obtain the distances from the two intersections to the transmission bottom surface, and compare the numerical values of the two distances;

[0060] S6. Denote the intersection corresponding to the larger numerical value as the first point, and denote the intersection corresponding to the smaller numerical value as the second point;

[0061] S7. Obtain the positional relationship between the first point and the second point. If the first point is farther from the mold than the second point, denote the distribution type of the metal powder in the transparent transmission pipeline as the first type of distribution;

[0062] S8. If the first point is closer to the mold than the second point, denote the distribution type of the metal powder in the transparent transmission pipeline as the second type of distribution;

[0063] According to the distribution type of the metal powder in the transparent transmission pipeline and in combination with the position of the powder replenishment area, replenish the powder in the mold.

[0064] Optionally, the replenishing the powder in the mold according to the distribution type of the metal powder in the transparent transmission pipeline and in combination with the position of the powder replenishment area is specifically as follows:

[0065] If the distribution type of the metal powder in the transparent transmission pipeline is the second type of distribution, then push the filling device to move directly above the first replenishment space to replenish the metal powder in the mold;

[0066] If the distribution type of the metal powder in the transparent transmission pipeline is the first type of distribution, then push the filling device to move and apply an acceleration to the filling device, and the applied acceleration is in the opposite direction to the filling direction;

[0067] Wherein the magnitude of the acceleration is obtained through the powder distribution adjustment model;

[0068] During the application of the acceleration, when the distribution type of the metal powder in the transparent transmission pipeline changes from the first type of distribution to the second type of distribution, stop the application of the acceleration;

[0069] After the application of the acceleration is completed, push the filling device to move directly above the mold to replenish the metal powder in the mold.

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

[0071] When the filling device starts to move, apply an acceleration to it in a direction opposite to the filling direction;

[0072] Record the moment when the filling device starts to move as the starting moment;

[0073] Starting from the starting moment, after the starting moment, record the moment that is at an interval of T B from the starting moment as the ending moment, where T B < T A ;

[0074] Obtain the distribution type of the metal powder in the transmission pipeline in real time;

[0075] If the distribution type of the metal powder in the transparent transmission pipeline is a type-I distribution, increase the magnitude of the acceleration to ensure that before reaching the ending moment, the distribution type of the metal powder in the transparent transmission pipeline changes from a type-I distribution to a type-II distribution;

[0076] When the distribution type of the metal powder in the transparent transmission pipeline changes from a type-I distribution to a type-II distribution, stop applying the 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 the high-strength powder metallurgy automotive engine gear uses a transparent transmission pipeline to transport the metal powder to the storage device. The transparent transmission pipeline can ensure that the transmission process of the metal powder is more controllable and visual, avoiding the problem of uneven powder distribution caused by manual operation in the traditional manual filling process; through the transparent pipeline transmission, the operator can monitor the filling process in real time, discover problems in time and make adjustments; in addition, after filling is completed, by applying uniform vibration to the vibrating end of the transparent transmission pipeline, it can effectively promote the more uniform distribution of the metal powder during the filling process, and after vibration, the uniform distribution of the metal powder in the transparent transmission pipeline can be used to judge in time whether the metal powder meets the filling standard; if the height of the metal powder in the transparent transmission pipeline is lower than or equal to the set filling judgment value T, it indicates that there is enough metal powder in the transparent transmission pipeline to be filled into the mold, then the filling is considered completed, if the height of the metal powder in the transparent transmission pipeline 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 is not filled with powder, so it is necessary to vibrate the powder in the mold to cause the powder in the mold to collapse; through the precise control of the metal powder by vibration, the filling of the powder is more in line with the pressing and forming conditions, and the finally obtained gear parts are more excellent in terms of strength, precision, etc., effectively improving the production efficiency and reducing the production cost.

[0079] 2. The production process of this high-strength powder metallurgy automotive engine gear uses a pneumatic rod to push the filling equipment to move directly above the mold and perform precise filling, ensuring a more accurate and reliable filling process. This avoids the uneven filling phenomenon caused by inaccurate or unstable positions in manual operation. Through the precise control of the pneumatic rod, the filling equipment can accurately stop directly above the mold to achieve precise powder distribution, thus avoiding the uncertainties and human errors in the manual filling process. In addition, during the filling process, the powder transmission is stopped and automatic filling is carried out, avoiding the situations of excessive or insufficient powder that may occur in traditional methods, thereby optimizing production efficiency and ensuring the quality consistency of each part. In the large-scale production process, this automated precise filling solution significantly improves the stability and efficiency of production, reduces the production cycle, also lowers the labor cost, and enhances the overall competitiveness of the enterprise.

[0080] 3. The production process of this high-strength powder metallurgy automotive engine gear introduces image processing technology to monitor and analyze the filled metal powder in real time, which can effectively judge whether the filling meets the standards and avoid the inefficiency and errors of traditional manual inspection. Through the real-time acquisition of images of the transparent transmission pipeline and the combination of advanced image processing technology, the distribution of metal powder in the transparent transmission pipeline can be accurately extracted, and the filling effect can be judged by comparing with the set filling judgment value. This high-precision detection method can timely feedback problems in the filling process, such as uneven powder distribution or insufficient filling, helping the production line quickly adjust parameters or take supplementary measures, avoiding the uncertainties brought by visual inspection or random sampling in traditional methods. Image processing technology makes the entire filling process more automated and intelligent, reduces human intervention and misjudgment, and at the same time improves the precision and consistency of filling. The stability and qualification rate of the final product are significantly improved, providing more reliable technical support for the mass production of powder metallurgy parts.

[0081] 4. The production process of this high-strength powder metallurgy automotive engine gear solves the problem of uneven powder distribution in the mold in traditional production processes by introducing automatic acquisition and replenishment measures for the powder replenishment area in the mold. In this method, the powder distribution in the mold is identified in real time through image processing technology, the area where the powder collapses in the mold is identified, and the position of the collapsed area in the mold is judged. Combining the powder distribution in the filling equipment at this time, different filling schemes are given. Specifically, if there is more powder on the side of the transparent transmission pipeline close to the mold, the filling equipment can be directly moved to the position directly above the mold to replenish the powder in the mold. When the filling equipment contacts the mold, the powder on the side of the transparent transmission pipeline close to the mold is filled into the mold, which not only completes the powder replenishment but also ensures that the powder distribution in the transparent transmission pipeline is relatively uniform. If there is more powder on the side of the transparent transmission pipeline far from the mold, it is necessary to adjust the powder distribution in the transparent transmission pipeline. This scheme greatly reduces the need for manual adjustment, making the production process more automated and intelligent. Especially when the powder distribution is uneven, through accurate replenishment area identification and intelligent replenishment, the uniform distribution of powder in the mold can be guaranteed, thus ensuring the consistency and high quality of the formed parts.

[0082] 5. In the production process of this high-strength powder metallurgy automotive engine gear, when there is more powder on the side of the transparent transmission pipeline far from the mold, the powder distribution in the filling equipment is adjusted by applying an 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 pipeline far from the mold will move to the side of the transparent transmission pipeline far from the mold, ensuring that in the subsequent replenishment process, when the filling equipment contacts the mold, the powder on the side of the transparent transmission pipeline close to the mold is filled into the mold, which not only completes the powder replenishment but also ensures that the powder distribution in the transparent transmission pipeline is relatively uniform. The magnitude of the acceleration can be obtained through pretreatment, which can significantly reduce the repeated operations in the production process and improve the overall production efficiency. This ability of instant response can help the production line save time, thereby improving the production efficiency and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 Schematic diagram of the positions of the filling equipment and the mold during powder transmission of the present invention.

[0084] Figure 2 Schematic diagram of a type of powder distribution in the storage equipment during powder replenishment of the present invention.

[0085] Figure 3 Schematic diagram of a second type of powder distribution in the storage equipment during powder replenishment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0086] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0087] Embodiment 1, a production process of a high-strength powder metallurgy automotive engine gear, characterized in that it includes:

[0088] Refer to Figure 1 , and transfer the metal powder to the storage device through a transparent transmission pipeline;

[0089] The transparent transmission pipeline can ensure that the transmission process of the metal powder is more controllable and visual, avoiding the problem of uneven powder distribution caused by manual operation in the traditional manual filling process; through the transparent pipeline transmission, the operator can monitor the filling process in real time, discover problems in time and make adjustments;

[0090] The transparent transmission pipeline and the storage device form a filling device;

[0091] During the transmission process of the metal powder, the position where the filling device is located is recorded as the initial position;

[0092] After the transmission of the metal powder is completed, the metal powder in the filling device is filled into the mold;

[0093] After the metal powder is filled, the filling device is vibrated. Specifically:

[0094] For the two open ends of the transparent transmission pipeline, the open end close to the storage device is recorded as the vibration end;

[0095] Apply uniform vibration simultaneously on the entire circumference of the vibration end;

[0096] In addition, by applying uniform vibration at the vibration end of the transparent transmission pipeline after filling, it can effectively promote the more uniform distribution of the metal powder during the filling process, and after vibration, the metal powder in the transparent transmission pipeline is evenly distributed, and it can be judged in time whether the metal powder meets the filling standard;

[0097] Obtain the filling judgment value T;

[0098] For the filling device after vibration, judge whether the metal powder in the filling device meets the filling standard according to the filling judgment value T;

[0099] If the metal powder in the filling device meets the filling standard, move the filling device to the initial position and press down the powder in the mold to obtain a formed gear-shaped part;

[0100] If the metal powder in the filling device does not reach the filling standard, it is determined that the metal powder in the mold does not meet the conditions for pressing and forming.

[0101] When the metal powder in the mold does not meet the conditions for pressing and forming, control the filling device to move to the initial position and vibrate the metal powder in the mold.

[0102] For the metal powder in the mold after vibration, obtain the powder replenishment area in the mold.

[0103] Perform powder replenishment on the powder replenishment area.

[0104] After the powder replenishment is completed, move the filling device to the initial position and press the powder in the mold to obtain a formed gear-shaped part.

[0105] The pneumatic rod is used to push the filling device to move directly above the mold for precise filling, ensuring that the filling process is more accurate and reliable. It avoids the uneven filling phenomenon caused by inaccurate or unstable positions in manual operation. Through the precise control of the pneumatic rod, the filling device can accurately stop directly above the mold to achieve precise powder distribution, thus avoiding the uncertainty and human error in the manual filling process. In addition, during the filling process, the powder transmission is stopped and automatic filling is performed, avoiding the situation of excessive or insufficient powder that may occur in traditional methods, thereby optimizing the production efficiency and ensuring the quality consistency of each part. In the process of large-scale production, this automated precise filling solution significantly improves the production stability and efficiency, reduces the production cycle, also reduces the labor cost, and enhances the overall competitiveness of the enterprise.

[0106] When the metal powder transmission is completed, filling the metal powder in the filling device into the mold is specifically as follows:

[0107] When the powder transmission is completed, stop the powder transmission.

[0108] Use the pneumatic rod to push the filling device to move uniformly directly above the mold.

[0109] Record the moment when the filling device starts to move as the initial moment.

[0110] Record the moment when the filling device contacts the mold as the termination moment.

[0111] Obtain the time difference between the termination moment and the initial moment, denoted as T A ;

[0112] When the filling device moves directly above the mold, fill the powder in the filling device into the mold.

[0113] The specific method for obtaining the filling judgment value T is as follows:

[0114] The cross-section at the junction of the transparent transmission pipeline and the storage device is the transmission bottom surface;

[0115] Whenever the transmission of metal powder is completed, the volume of metal powder in the filling device is fixed at V;

[0116] Denote the volume of metal powder required for a single pressing and forming as V 1 ;

[0117] When the metal powder with a volume of V 1 in the filling device is filled into the mold, metal powder with a volume of V 1 is transmitted into the filling device so that the volume of metal powder in the filling device after the transmission is V;

[0118] When the metal powder with a volume of V 1 in the filling device is filled into the mold, there is metal powder with a volume of V - V 1 in the filling device. Image acquisition is performed by rotating 360° around the central axis of the transparent transmission pipeline;

[0119] For the acquired image, the boundary between the metal powder and the transparent transmission pipeline in the image is marked through image processing technology;

[0120] Obtain the distances from each pixel point at the boundary to the transmission bottom surface, and denote the average value of the obtained distances as T.

[0121] For the vibrated filling device, it is judged whether the metal powder in the filling device meets the filling standard, specifically:

[0122] Image acquisition is performed by rotating 360° around the central axis of the transparent transmission pipeline;

[0123] For the acquired image, the boundary between the metal powder and the transparent transmission pipeline in the image is marked through image processing technology;

[0124] Obtain the distances from each pixel point at the boundary to the transmission bottom surface, and denote the maximum and minimum distances as X MAX and X MIN ;

[0125] Obtain the average value of X MAX and X MIN , denoted as X, where X = (X MAX + X MIN ) ÷ 2;

[0126] Compare the values of X and T;

[0127] If X ≤ T, if the height of the metal powder in the transparent transmission pipeline is lower than or equal to the set filling judgment value T, it indicates that there is enough metal powder in the transparent transmission pipeline to fill the mold, and it is determined that the metal powder in the filling device meets the filling standard;

[0128] If X > T, if the height of the metal powder in the transparent transmission pipeline is higher than the set filling judgment value T, it is determined that the filling is not completed, that is, there is a certain space in the mold that is not filled with powder, and it is determined that the metal powder in the filling device does not meet the filling standard.

[0129] For the metal powder in the mold after vibration, obtaining the powder replenishment area in the mold specifically includes:

[0130] Obtaining an image of the mold directly above the mold, denoted as the replenishment area acquisition image;

[0131] Processing the replenishment area acquisition image through image processing technology to identify the area where the mold has collapsed;

[0132] Denoting the collapsed area as the powder replenishment area;

[0133] Obtaining the moving direction of the filling device from the initial position to directly above the mold, denoted as the filling direction;

[0134] For the inner cavity of the mold, dividing the inner cavity of the mold into two spaces with equal volume by a plane perpendicular to the filling direction, and denoting the divided spaces as powder replenishment spaces;

[0135] According to the positional relationship between the two powder replenishment spaces and the filling device, denoting the powder replenishment space close to the filling device as the first replenishment space and the powder replenishment space far from the filling device as the second replenishment space;

[0136] Obtaining an image of the transparent transmission pipeline and judging the distribution type of the metal powder in the transparent transmission pipeline.

[0137] The obtaining an image of the transparent transmission pipeline and judging the distribution type of the metal powder in the transparent transmission pipeline further includes:

[0138] S1. Pushing the filling device to move along the filling direction;

[0139] S2. After the filling device starts to move, denoting the diameter parallel to the filling direction in the diameters of the transmission bottom surface as the first diameter, and making a first cross-section perpendicular to the transmission bottom surface through the first diameter;

[0140] S3. Obtaining the boundary between the metal powder and the transparent transmission pipeline;

[0141] S4. There are two intersection points between the boundary and the first cross-section;

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

[0143] S6. Denote the intersection point corresponding to the larger numerical value as the first point, and denote the intersection point corresponding to the smaller numerical value as the second point;

[0144] S7. Refer to Figure 2 , obtain the positional relationship between the first point and the second point. If the first point is farther from the mold than the second point, record the distribution type of the metal powder in the transparent transfer pipeline as the first type of distribution;

[0145] S8. Refer to Figure 3 , if the first point is closer to the mold than the second point, record the distribution type of the metal powder in the transparent transfer pipeline as the second type of distribution;

[0146] According to the distribution type of the metal powder in the transparent transfer pipeline and in combination with the position of the powder replenishment area, replenish the powder in the mold.

[0147] The replenishing the powder in the mold according to the distribution type of the metal powder in the transparent transfer pipeline and in combination with the position of the powder replenishment area is specifically as follows:

[0148] If the distribution type of the metal powder in the transparent transfer pipeline is the second type of distribution, then push the filling device to move directly above the first replenishment space to replenish the metal powder in the mold;

[0149] If the distribution type of the metal powder in the transparent transfer pipeline is the first type of distribution, then push the filling device to move and apply an acceleration to the filling device, and the applied acceleration is in the opposite direction to the filling direction;

[0150] Wherein the magnitude of the acceleration is obtained through the powder distribution adjustment model;

[0151] During the application of the acceleration, when the distribution type of the metal powder in the transparent transfer pipeline changes from the first type of distribution to the second type of distribution, stop the application of the acceleration;

[0152] After the application of the acceleration is completed, push the filling device to move directly above the mold to replenish the metal powder in the mold;

[0153] By introducing automatic acquisition and replenishment measures for the powder replenishment area within the mold, the problem of uneven powder distribution within the mold in traditional production processes is solved; in this method, the powder distribution within the mold is recognized in real time through image processing technology, the areas where the powder collapses within the mold are recognized, and the positions of the collapsed areas within the mold are judged. Combining with the powder distribution within the filling equipment at this time, different filling schemes are given. Specifically: if there is more powder on the side of the transparent transmission pipeline close to the mold, the filling equipment can be directly moved above the mold to replenish the powder within the mold. When the filling equipment contacts the mold, the powder on the side of the transparent transmission pipeline close to the mold is filled into the mold, which not only completes the powder replenishment but also ensures that the powder distribution within the transparent transmission pipeline is relatively uniform; if there is more powder on the side of the transparent transmission pipeline far from the mold, the powder distribution within the transparent transmission pipeline needs to be adjusted. This scheme greatly reduces the need for manual adjustment, making the production process more automated and intelligent. Especially when the powder distribution is uneven, through accurate replenishment area recognition and intelligent replenishment, the uniform distribution of the powder within the mold can be ensured, thus ensuring the consistency and high quality of the formed parts.

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

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

[0156] The moment when the filling equipment starts to move is recorded as the starting moment;

[0157] Starting from the starting moment, after the starting moment, the moment at an interval of T B from the starting moment is recorded as the ending moment, where T B <T A ;

[0158] The distribution type of the metal powder within the transmission pipeline is obtained in real time;

[0159] If the distribution type of the metal powder within the transparent transmission pipeline is a type I distribution, the magnitude of the acceleration is increased to ensure that before reaching the ending moment, the distribution type of the metal powder within the transparent transmission pipeline changes from a type I distribution to a type II distribution;

[0160] When the distribution type of the metal powder within the transparent transmission pipeline changes from a type I distribution to a type II distribution, the application of the acceleration is stopped and the magnitude of the acceleration at this time is recorded.

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

[0162] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A production process for high-strength powder metallurgy automobile engine gears, characterized in that: include: The metal powder is transferred to the storage device through a transparent transfer pipe; The transparent transmission pipeline and the material storage device constitute a filling device; During the metal powder transmission process, the location of the filling device is recorded as the initial location; When the metal powder transfer is completed, the metal powder in the filling device is filled into the mold; After the metal powder is filled, the filling equipment is vibrated, specifically: For the two open ends of the transparent transmission pipe, the open end close to the storage device is recorded as the vibration end; Apply uniform vibration simultaneously over the entire circumference of the vibrating end; Get the filling judgment value T; For the filling device after vibration, judging whether the metal powder in the filling device meets the filling standard according to the filling judgment value T; If the metal powder in the filling device meets the filling standard, the filling device is moved to the initial position and the powder in the mold is pressed down to obtain a 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 molding conditions; When the metal powder in the mold does not meet the pressing and molding conditions, the filling device is controlled to move to the initial position and the metal powder in the mold is vibrated; For the metal powder in the mold after vibration, a powder replenishment area in the mold is obtained; Replenish powder in the powder replenishment area; After the powder is replenished, the filling device is moved to the initial position and the powder in the mold is pressed down to obtain a molded gear-shaped part.

2. The production process of high-strength powder metallurgy automobile engine gear according to claim 1, characterized in that: After the metal powder is transferred, the metal powder in the filling device is filled into the mold, specifically: When the powder transmission is completed, the powder transmission is stopped; The filling device is pushed by the pneumatic rod to move at a constant speed to the top of the mold; The moment when the filling device starts to move is recorded as the initial moment; The moment when the filling device contacts the mold is recorded as the termination moment; Get the time difference between the end time and the initial time, recorded as T A ; When the filling device moves to the top of the mold, the powder in the filling device is filled into the mold.

3. The production process of high-strength powder metallurgy automobile engine gear according to claim 1, characterized in that: The obtaining of the filling judgment value T is specifically as follows: The cross section at the junction of the transparent transmission pipeline and the storage equipment is the transmission bottom surface; Whenever the metal powder is transferred, the volume of the metal powder in the filling device is fixed to V; The volume of metal powder required for a single press molding is recorded as V1; When the metal powder with a volume of V1 in the filling device is filled into the mold, the metal powder with a volume of V1 is transferred into the filling device, so that the volume of the metal powder in the filling device after the transfer is completed is V; When the metal powder with a volume of V1 in the filling device is filled into the mold, the metal powder with a volume of V-V1 exists in the filling device, and the image is collected 360° around the transparent transmission pipe by taking the central axis of the transparent transmission pipe as the rotation axis; For the collected images, the boundary between the metal powder and the transparent transmission pipe in the image is marked by image processing technology; The distance between each pixel point at the junction and the transmission bottom surface is obtained, and the average value of each distance obtained is recorded as T.

4. The production process of high-strength powder metallurgy automobile engine gear according to claim 1, characterized in that: The vibrated filling device is judged whether the metal powder in the filling device meets the filling standard, specifically: By taking the central axis of the transparent transmission pipe as the rotation axis, the image is collected 360° around the transparent transmission pipe; For the collected images, the boundary between the metal powder and the transparent transmission pipe in the image is marked by image processing technology; Get the distance between each pixel point at the junction and the transmission bottom surface, and record the maximum and minimum distances as X MAX and X MIN ; Get X MAX With X MIN The average value is recorded as X, where X = (X MAX +X MIN )÷2; Compare the values ​​of X and T; If X≤T, it is determined that the metal powder in the filling equipment meets the filling standard; If X>T, it is determined that the metal powder in the filling equipment does not meet the filling standard.

5. The production process of high-strength powder metallurgy automobile engine gear according to claim 1, characterized in that: The method of obtaining the powder replenishment area in the mold for the metal powder in the mold after vibration is as follows: An image of the mold is acquired directly above the mold, which is recorded as an image acquired in the supplementary area; The image acquired from the supplementary area is processed by image processing technology to identify the area where the collapse occurs in the mold; The area where collapse occurred was recorded as the powder replenishment area; Obtain the moving direction of the filling device from the initial position to directly above the mold, and record it 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 through a plane perpendicular to the filling direction, and the divided space is recorded as the powder replenishment space; According to the positional relationship between the two powder replenishing spaces and the filling device, the powder replenishing space close to the filling device is recorded as replenishing space No. 1, and the powder replenishing space far from the filling device is recorded as replenishing space No. 2; An image of the transparent transmission pipe is obtained to determine the distribution type of the metal powder in the transparent transmission pipe.

6. The production process of high-strength powder metallurgy automobile engine gear according to claim 5, characterized in that: The step of acquiring an image of the transparent transmission pipeline and determining the distribution type of the metal powder in the transparent transmission pipeline further includes: S1, pushing the filling device to move along the filling direction; S2. After the filling device starts to move, the diameter of the bottom surface of the transmission parallel to the filling direction is recorded as the No. 1 diameter, and a No. 1 section perpendicular to the bottom surface of the transmission is made through the No. 1 diameter; S3, obtaining the interface between the metal powder and the transparent transmission pipe; S4, the boundary and section 1 have two intersection points; S5, obtaining the distances between the two intersection points and the transmission bottom surface, and comparing the values ​​of the two distances; S6. The intersection point corresponding to the larger value is recorded as point 1, and the intersection point corresponding to the smaller value is recorded as point 2; S7, obtaining the positional relationship between point No. 1 and point No. 2, if point No. 1 is farther from the mold than point No. 2, recording the distribution type of the metal powder in the transparent transmission pipe as a type I 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 type II distribution; According to the distribution type of metal powder in the open transmission pipeline and the position of the powder replenishment area, the powder in the mold is replenished.

7. The production process of high-strength powder metallurgy automobile engine gear according to claim 6, characterized in that: The method of replenishing the powder in the mold according to the distribution type of the metal powder in the transmission pipeline and the position of the powder replenishment area is as follows: If the distribution type of the metal powder in the transparent transmission pipe is the second type of distribution, the filling device is pushed to move to the top of the No. 1 replenishing space to replenish the metal powder in the mold; If the distribution type of the metal powder in the transparent transmission pipe is a type I distribution, the filling device is pushed to move 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 through the powder distribution adjustment model; During the acceleration application process, when the distribution type of the metal powder in the transparent transmission pipe changes from the first type distribution to the second type distribution, the acceleration application is stopped; After the acceleration is applied, the filling device is pushed to move directly above the mold to replenish the metal powder in the mold.

8. The production process of high-strength powder metallurgy automobile engine gear according to claim 7, characterized in that: The acceleration magnitude is obtained through the powder distribution adjustment model, specifically: When the filling device starts to move, an acceleration in a direction opposite to the filling direction is applied to it; The moment when the filling device starts to move is recorded as the start moment; Starting from the start time, after the start time, the interval T from the start time will be B The moment of T is recorded as the terminal moment, where T B <T A ; Obtain the distribution type of metal powder in the transmission pipeline in real time; 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 moment; When the distribution type of the metal powder in the transparent transmission pipe changes from type I distribution to type II distribution, the application of acceleration is stopped and the magnitude of the acceleration at this time is recorded.

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