A method for controlling hot spinning processing

Abstract

The present invention relates to the technical field of hot spinning processing, and discloses a hot spinning processing control method. First, the workpiece to be spun is heated to a highly plastic state at 800°C - 1000°C and accurately positioned on the working surface of the target mold. The geometric center is obtained by selecting three points at the edge of the workpiece and the mold and fitting and aligning them to ensure the concentricity and forming consistency during the spinning process. After spinning is completed, the system extracts the cross-sectional information of the completed workpiece, divides the workpiece into two parts according to the positioning plane, and performs auxiliary plane division on each part through the manually set division interval to calculate the differential weights of each sub-part and iteratively adjust the positioning plane until the differential weights of the two parts are the same. For the case where the differential weights are equal, the suction area is further determined on the cross-section of the target mold. By setting the redundant distance parallel to the positioning line, the first area and the second area are generated, and precise grasping is completed through the collaborative control of multiple adsorption mechanisms.

Description

Technical Field

[0001] The present invention relates to the technical field of hot spinning, in particular to a hot spinning control method. Background Art

[0002] Hot spinning is an advanced process for forming metal through rotation and local pressure. It is widely used in the manufacture of high-precision thin-walled parts in the fields of aerospace, automobiles, etc. Demolding is a key link that cannot be ignored in the hot spinning process, which has a direct impact on the quality of the formed parts and production efficiency. After high-temperature spinning, the workpiece and the mold surface often produce strong adhesion due to metal adhesion, oxide scale adhesion and thermal expansion differences, making it difficult to remove the formed part from the mold. There are two solutions for demolding the workpiece in the existing technology. One is to demold manually. Manual demolding often causes the workpiece to bend off the mold. This method not only damages the workpiece, but also damages the mold. The other is to use a machine for adsorption demolding. However, in the process of adsorption demolding by the machine, the adsorption point is often selected arbitrarily, resulting in unstable adsorption, causing the workpiece to shake and fall during the demolding process, which will cause damage to the workpiece.

[0003] In summary, there is an urgent need for a hot spinning process control method that can improve the stability and yield of the hot spinning production line by accurately identifying the suction area and working in conjunction with the automated adsorption mechanism. Summary of the invention

[0004] The present invention provides a hot spinning processing control method, which helps solve the problems mentioned in the above background technology.

[0005] The present invention provides the following technical solution: a hot spinning processing control method, comprising:

[0006] preparing a workpiece to be spun, wherein the workpiece to be spun is a thin wafer;

[0007] Prepare a mold corresponding to the workpiece to be spun, which is referred to as the target mold;

[0008] The workpiece to be spun is heated to raise the temperature to 800℃-1000℃;

[0009] Moving the heated workpiece to be spun to a predetermined spinning position;

[0010] Start the spinning machine and spin the workpiece to be spun, specifically:

[0011] Start the main spindle of the spinning machine to rotate the workpiece to be spun at high speed;

[0012] The spinning wheel feeds slowly in the axial and radial directions, pressing the workpiece to be spun toward the target mold, causing it to gradually deform and conform to the target mold surface;

[0013] After spinning is completed, obtain the suction area on the workpiece;

[0014] Obtain the geometric center of the workpiece to be spun, denoted as the first center;

[0015] Obtain the geometric center of the target surface of the target mold, denoted as the second center;

[0016] Divide the workpiece to be spun that has completed spinning into two parts, denoted as the first part and the second part respectively;

[0017] Obtain the differential weights of the two parts of the workpiece to be spun, denoted as the first part differential weight and the second part differential weight respectively;

[0018] Obtain the suction area according to the differential weights of the two parts of the workpiece to be spun, specifically:

[0019] If the first part differential weight is not equal to the second part differential weight, re-make the positioning plane until the positioning plane divides the workpiece to be spun into two parts with equal differential weights;

[0020] If the first part differential weight is equal to the second part differential weight, obtain the positioning line; set a redundant distance, and the redundant distance is used to obtain the suction area; on both sides of the positioning line on the cross-section of the target mold, make a straight line parallel to the positioning line and spaced from the positioning line by the redundant distance respectively. The two part target edges between the two straight lines are denoted as the first area and the second area respectively; the first area and the second area are the suction areas;

[0021] Control the adsorption mechanism to suck the workpiece to be spun that has completed spinning.

[0022] Optionally, the moving the heated workpiece to be spun to the predetermined spinning position specifically includes:

[0023] Obtain the geometric center of the workpiece to be spun, specifically:

[0024] Arbitrarily select three points that are not on the same straight line on the edge of the workpiece to be spun, denoted as A, B, and C respectively;

[0025] Connect AB to form a line segment, denoted as the first line segment, obtain the midpoint of the first line segment, and on the upper surface of the workpiece to be spun, make a straight line perpendicular to the first line segment through the midpoint of the first line segment, denoted as the first straight line;

[0026] Connect BC to form a line segment, denoted as the second line segment, obtain the midpoint of the second line segment, and on the upper surface of the workpiece to be spun, make a straight line perpendicular to the second line segment through the midpoint of the second line segment, denoted as the second straight line;

[0027] The intersection point of the first straight line and the second straight line is denoted as the first center, and the first center is the geometric center of the workpiece to be spun;

[0028] Obtain the working surface of the target mold, denoted as the target surface. The working surface refers to the surface that directly contacts the workpiece to be spun among all the surfaces of the target mold;

[0029] Obtain the geometric center of the target surface. Specifically:

[0030] Arbitrarily select three points that are not on the same straight line on the edge of the target surface, denoted as D, E, and F respectively;

[0031] Connect DE to form a line segment, denoted as the third line segment. Obtain the midpoint of the third line segment, and on the target surface, draw a line perpendicular to the third line segment through the midpoint of the third line segment, denoted as the third line;

[0032] Connect EF to form a line segment, denoted as the fourth line segment. Obtain the midpoint of the fourth line segment, and on the target surface, draw a line perpendicular to the fourth line segment through the midpoint of the fourth line segment, denoted as the fourth line;

[0033] The intersection point of the third line and the fourth line is denoted as the second center, and the second center is the geometric center of the target surface;

[0034] Absorb and move the workpiece to be spun so that the first center coincides with the second center.

[0035] Optionally, the step of dividing the workpiece to be spun after spinning into two parts specifically includes:

[0036] Draw a plane perpendicular to the target surface through the second center, denoted as the auxiliary plane;

[0037] The auxiliary plane intersects with the target mold to obtain the cross-section of the target mold;

[0038] The edge of the cross-section of the target mold is denoted as the target edge;

[0039] The line segment on the target edge where the target surface is located is denoted as the auxiliary line segment;

[0040] Arbitrarily draw a line parallel to the auxiliary line segment on the cross-section of the target mold, denoted as the positioning line;

[0041] The direction in which the auxiliary line segment perpendicularly points to the positioning line is denoted as the first direction;

[0042] Draw a plane perpendicular to the cross-section of the target mold through the positioning line, denoted as the positioning plane;

[0043] The positioning plane divides the workpiece to be spun after spinning into two parts, denoted as the first part and the second part respectively.

[0044] Optionally, the step of obtaining the differential weights of the two parts of the workpiece to be spun specifically includes:

[0045] Set a segmentation interval, and the segmentation interval is used to obtain the suction area;

[0046] For the first part, at every other segmentation interval in the first direction, an auxiliary plane parallel to the positioning plane is made, and the made auxiliary planes form a set of first auxiliary planes; the auxiliary planes in the set of first auxiliary planes divide the first part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, denoted as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained and denoted as the first plane and the second plane respectively; the intersection line of the first plane and the cross-section of the target die is obtained, denoted as the first intersection line; the shortest distance from the first intersection line to the positioning plane is obtained, denoted as the first distance; the intersection line of the second plane and the cross-section of the target die is obtained, denoted as the second intersection line; the shortest distance from the second intersection line to the positioning plane is obtained, denoted as the second distance; calculate (the first distance + the second distance) / 2, and the calculation result is denoted as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and the result is denoted as the auxiliary result of this sub-part;

[0047] Obtain the auxiliary results of each sub-part of the first part and calculate the sum of the auxiliary results of each sub-part of the first part, and the calculation result is denoted as the differential weight of the first part.

[0048] Optionally, the obtaining the differential weights of the two parts of the workpiece to be spun also includes:

[0049] For the second part, at every other segmentation interval in the first direction, an auxiliary plane parallel to the positioning plane is made, and the made auxiliary planes form a set of second auxiliary planes; the auxiliary planes in the set of second auxiliary planes divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, denoted as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained and denoted as the third plane and the fourth plane respectively; the intersection line of the third plane and the cross-section of the target die is obtained, denoted as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained, denoted as the third distance; the intersection line of the fourth plane and the cross-section of the target die is obtained, denoted as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained, denoted as the fourth distance; calculate (the third distance + the fourth distance) / 2, and the calculation result is denoted as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and the result is denoted as the auxiliary result of this sub-part;

[0050] Obtain the auxiliary results of each sub-part of the second part and calculate the sum of the auxiliary results of each sub-part of the second part, and the calculation result is denoted as the differential weight of the second part.

[0051] Optionally, the controlling the adsorption mechanism to suck the workpiece to be spun after spinning specifically includes:

[0052] Obtain the lengths of the line segments in the first area, and sort them in descending order of length; select the longest line segment as the first suction area, and obtain the midpoint of the first suction area, denoted as the first midpoint;

[0053] Obtain the lengths of the line segments in the second region, and sort them in descending order of length; select the longest line segment as the second suction region, and obtain the midpoint of the second suction region, denoted as the second midpoint;

[0054] Obtain the distance from the first midpoint to the second midpoint, denoted as the first auxiliary distance;

[0055] Draw a straight line through the first midpoint and the second midpoint, denoted as the target line;

[0056] Set a length threshold, which is used to determine whether to extend the second adsorption mechanism;

[0057] Obtain the line segment length of the line segment where the first suction region is located, denoted as the first length;

[0058] If the first length is greater than the length threshold, start the second cylinder to extend the second adsorption mechanism;

[0059] By adjusting the distance between the two first cylinders, make the distance between the two first adsorption mechanisms greater than the first auxiliary distance;

[0060] Simultaneously extend the two first cylinders so that the adsorption points of the first adsorption mechanisms move onto the target line;

[0061] Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanisms and the adsorption points of the second adsorption mechanisms adsorb to the first adsorption region;

[0062] First, absorb the gas in the first adsorption mechanism through the first air pipe, so that the first suction cup generates negative pressure to adsorb the workpiece to be spin-forged located in the first suction region;

[0063] Then, absorb the gas in the second adsorption mechanism through the second air pipe, so that the second suction cup generates negative pressure to adsorb the workpiece to be spin-forged located in the first suction region.

[0064] Optionally, the control of the adsorption mechanism to suck the workpiece to be spin-forged after spin-forging further includes:

[0065] If the first length is less than or equal to the length threshold, control the second cylinder to contract;

[0066] By adjusting the distance between the two first cylinders, make the distance between the two first adsorption mechanisms greater than the first auxiliary distance;

[0067] Simultaneously extend the two first cylinders so that the adsorption points of the first adsorption mechanisms move onto the target line;

[0068] Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanisms adsorb to the first adsorption region;

[0069] Absorb the gas in the first adsorption mechanism through the first air pipe, so that a negative pressure is generated in the first suction cup to adsorb the workpiece to be spin-forged located in the first suction area.

[0070] Optionally, it includes:

[0071] Two first cylinders assembled on a linear guide rail. The linear guide rail is a prior art, including a slide rail and a slider slidably assembled on the slide rail. A motor is installed on the slider, and the gear on the motor meshes with the tooth groove on the slide rail. When the motor is controlled to rotate, the slider can slide on the slide rail. The bottom of the telescopic rod of the first cylinder is hinged with a first adsorption mechanism. A rotating shaft is fixedly installed on the first adsorption mechanism, and the rotating shaft is rotatably installed at the bottom of the telescopic rod of the first cylinder. The rotating shaft is also connected to the bottom of the telescopic rod of the first cylinder through a spring. The spring is used to adjust the first adsorption mechanism to be horizontal with the telescopic direction of the first cylinder in the non-working state. The first adsorption mechanism is a sealed cuboid box structure. A first suction cup is installed on the first adsorption mechanism. The first suction cup is communicated with the internal space of the first adsorption mechanism through a hole. A first air pipe is also assembled on the first adsorption mechanism, and the inside of the first adsorption mechanism is also communicated through the first air pipe.

[0072] Optionally, it includes:

[0073] The bottom of the first adsorption mechanism is also hinged with a second adsorption mechanism. An L-shaped plate is slidably installed on the second adsorption mechanism. A sliding seat is fixedly installed on the L-shaped plate, and the sliding seat is slidably installed in the groove opened by the second adsorption mechanism. The internal space of the groove matches the sliding seat. A hinged plate is installed on the L-shaped plate, and the hinged plate forms a hinged connection with the first adsorption mechanism. On the side of the L-shaped plate far from the hinged plate, a connection relationship is formed with the first adsorption mechanism through a first rubber corrugated pipe. Moreover, the inside of the first adsorption mechanism is communicated with the internal space of the first rubber corrugated pipe through an adjustment hole. A second suction cup is installed on the second adsorption mechanism. The internal space of the second suction cup is communicated with the internal space of the second adsorption mechanism. A second air pipe is also installed on the second adsorption mechanism, and the second air pipe is communicated with the internal space of the second adsorption mechanism;

[0074] A second cylinder is also fixedly installed on the L-shaped plate. The telescopic rod of the second cylinder is connected to the second adsorption mechanism and is used to push the second adsorption mechanism to slide along the sliding seat relative to the L-shaped plate.

[0075] The present invention has the following beneficial effects:

[0076] 1. For this hot spinning process control method, when obtaining the geometric center of the workpiece to be spun, three points on a straight line are randomly selected on the edge, and they are connected pairwise. Then, for any two line segments, perpendicular lines are drawn through the midpoints of the line segments. The intersection of the drawn lines is the geometric center of the workpiece to be spun. The same operation is also carried out when obtaining the geometric center of the target mold. By respectively selecting three points on the edges of the workpiece to be spun and the target mold and constructing perpendicular bisectors to obtain the geometric center, the concentricity between the workpiece and the mold is ensured to reach an ideal state. Under the action of the spinning load, the material can flow evenly, avoiding uneven wall thickness or local excessive stretching caused by eccentricity, and effectively improving the quality qualification rate of the parts.

[0077] 2. For this hot spinning process control method, the spun workpiece is divided into two parts according to the positioning plane, and multiple auxiliary planes are generated by using segmentation intervals. Computer simulation weight solutions are carried out for each sub-region, and after distance weighting, an auxiliary result is formed to ensure that the auxiliary weight of the first part is equal to that of the second part. The present invention can accurately evaluate the contribution of each region to the center of gravity and dynamically adjust the positioning plane to ensure that the differential weights of the two parts are consistent, further optimizing the picking and placing path and the selection of the suction points, and avoiding the phenomenon that the actual weights of the two parts are equal but the lengths of the two parts are not equal, resulting in different calculation results obtained by multiplying the force by the force arm and the workpiece falling off due to unstable center of gravity during adsorption.

[0078] 3. For this hot spinning process control method, on the cross-section of the target mold, an adjustable redundant distance is set along the parallel direction based on the positioning line, and a first region and a second region are constructed to ensure that reasonable suction regions can be generated within different ranges of the cross-section shapes and sizes of the parts, enhancing the versatility and adaptability of the suction mechanism.

[0079] 4. For this hot spinning process control method, a length threshold is set, and whether to extend the second suction mechanism is judged by the size relationship between the first length and the length threshold. If the first length is greater than the length threshold, it means that the length of the adsorbable region is sufficient, and at this time, the second suction mechanism is extended, which can increase the adsorption force and ensure the firm adsorption of the workpiece. If the first length is less than or equal to the length threshold, it means that the adsorption region is not long enough and only one suction mechanism can be accommodated for adsorption, so there is no need to extend the second suction mechanism.

[0080] 5. In the process of the adsorption mechanism moving to the first region, no negative pressure is generated, and the first cylinder can move freely at the bottom of the telescopic rod of the first cylinder, so as to better fit the first region and achieve a better adsorption effect. Once adsorption starts, the first adsorption mechanism generates negative pressure, so that the first suction cup tightly adsorbs on the surface of the workpiece to be spin-forged. During adsorption, negative pressure is also generated in the first rubber bellows, so that the first rubber bellows contracts. The first adsorption mechanism and the second adsorption mechanism are connected by a hinge plate. The contraction of the first rubber bellows causes the second adsorption mechanism to rotate towards the first adsorption mechanism. Because the workpiece to be spin-forged has a curvature after spin-forging, the rotation of the second adsorption mechanism towards the first adsorption mechanism can achieve better fitting of the second suction cup to the surface of the workpiece to be spin-forged after spin-forging, so that the adsorption force is greater and a better adsorption effect is achieved. At the same time of generating negative pressure, the sealing plate drives the contact rod to move upward until the contact rod abuts against the telescopic rod of the first cylinder, and there is no shaking at the bottom of the first adsorption mechanism and the telescopic rod of the first cylinder, so as to ensure that there is no shaking during the process of moving the first adsorption mechanism to separate the workpiece to be spin-forged from the target mold after adsorption, thus avoiding the phenomenon that the workpiece to be spin-forged falls due to excessive shaking of the first adsorption mechanism during the demolding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is a schematic diagram of the first cylinder of the present invention.

[0082] Figure 2 It is a schematic sectional view of the first adsorption mechanism and the second adsorption mechanism of the present invention.

[0083] Figure 3 It is an assembly schematic diagram of the second adsorption mechanism and the L-shaped plate of the present invention.

[0084] Figure 4 It is an assembly schematic diagram of the limit plate of the present invention.

[0085] Figure 5 It is a schematic diagram of the first region and the second region of the present invention.

[0086] In the figure: 1. Slide rail, 2. Motor, 3. Slide block, 4. First cylinder, 5. Spring, 6. Rotating shaft, 7. First adsorption mechanism, 8. First suction cup, 9. Adjusting hole, 10. First rubber bellows, 11. Second suction cup, 12. Second adsorption mechanism, 13. Second air pipe, 14. Hinge plate, 15. First air pipe, 16. Third air pipe, 17. Sealing plate, 18. Second rubber bellows, 19. Limit plate, 20. Contact rod, 21. Contraction space, 22. Connecting rod, 23. L-shaped plate, 24. Slide seat, 25. Second cylinder. DETAILED DESCRIPTION OF THE INVENTION

[0087] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0088] An embodiment is referred to Figures 1 - 5 , a hot spinning process control method, including:

[0089] Prepare the workpiece to be spun, and the workpiece to be spun is a thin disc;

[0090] Prepare a mold corresponding to the workpiece to be spun, denoted as the target mold;

[0091] Heat the workpiece to be spun to raise the temperature of the workpiece to be spun to 800°C - 1000°C;

[0092] Move the heated workpiece to be spun to the predetermined spinning position;

[0093] Start the spinning machine and spin the workpiece to be spun. Specifically:

[0094] Start the rotation of the main shaft of the spinning machine to make the workpiece to be spun rotate at a high speed;

[0095] The spinning wheel feeds slowly along the axial and radial directions, presses the workpiece to be spun against the target mold, and makes it gradually deform and conform to the surface of the target mold;

[0096] After spinning is completed, obtain a suction area on the workpiece;

[0097] Obtain the geometric center of the workpiece to be spun, denoted as the first center;

[0098] Obtain the geometric center of the target surface of the target mold, denoted as the second center;

[0099] Divide the spun workpiece to be spun into two parts, denoted as the first part and the second part respectively;

[0100] Obtain the differential weights of the two parts of the workpiece to be spun, denoted as the differential weight of the first part and the differential weight of the second part respectively;

[0101] Obtain the suction area according to the differential weights of the two parts of the workpiece to be spun. Specifically:

[0102] If the differential weight of the first part is not equal to the differential weight of the second part, re-make the positioning plane until the differential weights of the two parts into which the workpiece to be spun is divided by the made positioning plane are equal;

[0103] If the differential weight of the first part is equal to the differential weight of the second part, obtain the positioning line; set a redundant distance, which is used to obtain the suction area; on both sides of the positioning line on the cross-section of the target mold, draw a line parallel to the positioning line and spaced from the positioning line by the redundant distance, and the two partial target edges between the two lines are respectively denoted as the first area and the second area; the first area and the second area are the suction areas;

[0104] In this hot spinning processing control method, with the positioning line as the reference on the cross-section of the target mold, an adjustable redundant distance is set in the parallel direction to construct the first area and the second area, ensuring that reasonable suction areas can be generated within different ranges of part cross-section shapes and sizes, and enhancing the versatility and adaptability of the adsorption mechanism;

[0105] Control the adsorption mechanism to suck the workpiece to be spun that has completed spinning.

[0106] The moving of the heated workpiece to be spun to the predetermined spinning position specifically includes:

[0107] Obtain the geometric center of the workpiece to be spun, specifically:

[0108] Arbitrarily select three points that are not on the same straight line on the edge of the workpiece to be spun, and denote them as A, B, and C respectively;

[0109] Connect AB to form a line segment, denoted as the first line segment, obtain the midpoint of the first line segment, and draw a line perpendicular to the first line segment on the upper surface of the workpiece to be spun through the midpoint of the first line segment, denoted as the first line;

[0110] Connect BC to form a line segment, denoted as the second line segment, obtain the midpoint of the second line segment, and draw a line perpendicular to the second line segment on the upper surface of the workpiece to be spun through the midpoint of the second line segment, denoted as the second line;

[0111] The intersection point of the first line and the second line is denoted as the first center, and the first center is the geometric center of the workpiece to be spun;

[0112] Obtain the working surface of the target mold, denoted as the target surface, and the working surface refers to the surface that directly contacts the workpiece to be spun among all the surfaces of the target mold;

[0113] Obtain the geometric center of the target surface, specifically:

[0114] Arbitrarily select three points that are not on the same straight line on the edge of the target surface, and denote them as D, E, and F respectively;

[0115] Connect DE to form a line segment, denoted as the third line segment, obtain the midpoint of the third line segment, and draw a line perpendicular to the third line segment on the target surface through the midpoint of the third line segment, denoted as the third line;

[0116] Connect EF to form a line segment, denoted as the fourth line segment. Obtain the midpoint of the fourth line segment, and draw a line perpendicular to the fourth line segment on the target surface through the midpoint of the fourth line segment, denoted as the fourth line;

[0117] The intersection point of the third line and the fourth line is denoted as the second center, and the second center is the geometric center of the target surface;

[0118] Absorb and move the workpiece to be spin-formed so that the first center coincides with the second center;

[0119] In this hot spin-forming processing control method, when obtaining the geometric center of the workpiece to be spin-formed, by arbitrarily selecting three collinear points on the edge and connecting them pairwise, and arbitrarily selecting two line segments to draw lines perpendicular to these line segments through the midpoints of the line segments, the intersection of the drawn lines is the geometric center of the workpiece to be spin-formed. The same operation is also carried out when obtaining the geometric center of the target mold. By respectively selecting three points on the edges of the workpiece to be spin-formed and the target mold and constructing perpendicular bisectors to obtain the geometric center, the concentricity between the workpiece and the mold is ensured to reach an ideal state, and the material can flow uniformly under the action of the spin-forming load, avoiding uneven wall thickness or local excessive stretching caused by eccentricity, and effectively improving the quality qualification rate of the parts.

[0120] The step of dividing the workpiece to be spin-formed that has completed spin-forming into two parts specifically includes:

[0121] Draw a plane perpendicular to the target surface through the second center, denoted as the auxiliary plane;

[0122] The intersection of the auxiliary plane and the target mold obtains the cross-section of the target mold;

[0123] The edge of the cross-section of the target mold is denoted as the target edge;

[0124] The line segment on the target edge where the target surface is located is denoted as the auxiliary line segment;

[0125] Arbitrarily draw a line parallel to the auxiliary line segment on the cross-section of the target mold, denoted as the positioning line;

[0126] The direction in which the auxiliary line segment perpendicularly points to the positioning line is denoted as the first direction;

[0127] Draw a plane perpendicular to the cross-section of the target mold through the positioning line, denoted as the positioning plane;

[0128] The positioning plane divides the workpiece to be spin-formed that has completed spin-forming into two parts, denoted as the first part and the second part respectively.

[0129] The step of obtaining the differential weights of the two parts of the workpiece to be spin-formed specifically includes:

[0130] Set a segmentation interval, and the segmentation interval is used to obtain the suction area;

[0131] For the first part, at every other segmentation interval in the first direction, an auxiliary plane parallel to the positioning plane is made, and the made auxiliary planes form a set of first auxiliary planes; the auxiliary planes in the set of first auxiliary planes divide the first part into several sub-parts; for a sub-part, the weight of this sub-part is obtained through computer simulation and denoted as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained and denoted as the first plane and the second plane respectively; the intersection line of the first plane and the cross-section of the target die is obtained and denoted as the first intersection line; the shortest distance from the first intersection line to the positioning plane is obtained and denoted as the first distance; the intersection line of the second plane and the cross-section of the target die is obtained and denoted as the second intersection line; the shortest distance from the second intersection line to the positioning plane is obtained and denoted as the second distance; calculate (the first distance + the second distance) / 2, and the calculation result is denoted as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and the result is denoted as the auxiliary result of this sub-part;

[0132] Obtain the auxiliary results of each sub-part of the first part and calculate the sum of the auxiliary results of each sub-part of the first part, and the calculation result is denoted as the differential weight of the first part.

[0133] The obtaining of the differential weights of the two parts of the workpiece to be spin-formed further includes:

[0134] For the second part, at every other segmentation interval in the first direction, an auxiliary plane parallel to the positioning plane is made, and the made auxiliary planes form a set of second auxiliary planes; the auxiliary planes in the set of second auxiliary planes divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained through computer simulation and denoted as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained and denoted as the third plane and the fourth plane respectively; the intersection line of the third plane and the cross-section of the target die is obtained and denoted as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained and denoted as the third distance; the intersection line of the fourth plane and the cross-section of the target die is obtained and denoted as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained and denoted as the fourth distance; calculate (the third distance + the fourth distance) / 2, and the calculation result is denoted as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and the result is denoted as the auxiliary result of this sub-part;

[0135] Obtain the auxiliary results of each sub-part of the second part and calculate the sum of the auxiliary results of each sub-part of the second part, and the calculation result is denoted as the differential weight of the second part;

[0136] The hot spinning process control method divides the spun workpiece into two parts according to the positioning plane, generates multiple auxiliary planes by dividing intervals, performs computer simulation weight solving and distance weighting on each sub-region to form an auxiliary result, ensuring that the auxiliary weight of the first part is equal to the auxiliary weight of the second part. The present invention can accurately evaluate the contribution of each region to the center of gravity and dynamically adjust the positioning plane to ensure that the differential weights of the two parts are consistent, further optimizing the picking and placing path and the selection of suction points, and avoiding the phenomenon that the actual weights of the two parts are equal but the lengths of the two parts are not equal, resulting in different calculation results obtained by multiplying the force by the force arm and causing the workpiece to fall off due to unstable center of gravity during adsorption.

[0137] The control adsorption mechanism sucks the workpiece to be spun that has completed spinning, specifically including:

[0138] Obtain the lengths of each line segment in the first region and sort them in descending order of length; select the longest line segment as the first suction region, and obtain the midpoint of the first suction region, denoted as the first midpoint;

[0139] Obtain the lengths of each line segment in the second region and sort them in descending order of length; select the longest line segment as the second suction region, and obtain the midpoint of the second suction region, denoted as the second midpoint;

[0140] Obtain the distance from the first midpoint to the second midpoint, denoted as the first auxiliary distance;

[0141] Draw a straight line through the first midpoint and the second midpoint, denoted as the target line;

[0142] Set a length threshold, which is used to judge whether to extend the second adsorption mechanism;

[0143] Obtain the line segment length of the line segment where the first suction region is located, denoted as the first length;

[0144] If the first length is greater than the length threshold, start the second cylinder to extend the second adsorption mechanism;

[0145] Adjust the distance between the two first cylinders so that the distance between the two first adsorption mechanisms is greater than the first auxiliary distance;

[0146] Simultaneously extend the two first cylinders so that the adsorption points of the first adsorption mechanism move to the target line;

[0147] Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanism and the second adsorption mechanism adsorb to the first adsorption region;

[0148] First, absorb the gas in the first adsorption mechanism through the first air pipe to make the first suction cup generate negative pressure, and adsorb the workpiece to be spun located in the first suction region;

[0149] Then, the gas in the second adsorption mechanism is absorbed through the second air pipe, so that a negative pressure is generated in the second suction cup to adsorb the workpiece to be spin-forged located in the first suction area.

[0150] The control of the adsorption mechanism to suck the workpiece to be spin-forged after spin-forging further includes:

[0151] If the first length is less than or equal to the length threshold, control the second cylinder to contract;

[0152] Since the first adsorption area and the second adsorption area are symmetrical figures, only the first length needs to be judged;

[0153] By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made greater than the first auxiliary distance;

[0154] At the same time, extend the two first cylinders so that the adsorption points of the first adsorption mechanism move to the target straight line;

[0155] Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanism adsorb to the first adsorption area;

[0156] The gas in the first adsorption mechanism is absorbed through the first air pipe, so that a negative pressure is generated in the first suction cup to adsorb the workpiece to be spin-forged located in the first suction area;

[0157] In this hot spin-forging processing control method, by setting a length threshold and judging whether to extend the second adsorption mechanism according to the size relationship between the first length and the length threshold; if the first length is greater than the length threshold, it means that the length of the adsorbable area is sufficient. At this time, extend the second adsorption mechanism to increase the adsorption force and ensure the firm adsorption of the workpiece; if the first length is less than or equal to the length threshold, it means that the adsorption area is not long enough and only one adsorption mechanism can be accommodated for adsorption, so there is no need to extend the second adsorption mechanism.

[0158] Including:

[0159] Two first cylinders assembled on a linear guide rail. The linear guide rail is a prior art, including a slide rail and a slider slidably assembled on the slide rail. A motor is installed on the slider, and the gear on the motor meshes with the tooth groove on the slide rail. When the motor is controlled to rotate, the slider can slide on the slide rail. The bottom of the telescopic rod of the first cylinder is hinged with a first adsorption mechanism. A rotating shaft is fixedly installed on the first adsorption mechanism, and the rotating shaft is rotatably installed at the bottom of the telescopic rod of the first cylinder. The rotating shaft is also connected to the bottom of the telescopic rod of the first cylinder through a spring. The spring is used to adjust the first adsorption mechanism to be horizontal with the telescopic direction of the first cylinder in the non-working state. The first adsorption mechanism is a sealed rectangular box structure. A first suction cup is installed on the first adsorption mechanism. The first suction cup is communicated with the internal space of the first adsorption mechanism through a hole. A first air pipe is also assembled on the first adsorption mechanism, and the inside of the first adsorption mechanism is also communicated through the first air pipe.

[0160] Including:

[0161] The bottom of the first adsorption mechanism is also hinged with a second adsorption mechanism. An L-shaped plate is slidably installed on the second adsorption mechanism. A sliding seat is fixedly installed on the L-shaped plate, and the sliding seat is slidably installed in a groove opened on the second adsorption mechanism. The internal space of the groove matches the sliding seat. A hinged plate is installed on the L-shaped plate, and the hinged plate forms a hinged connection with the first adsorption mechanism. On the side of the L-shaped plate away from the hinged plate, a connection relationship is formed with the first adsorption mechanism through a first rubber corrugated pipe. Moreover, the inside of the first adsorption mechanism is communicated with the internal space of the first rubber corrugated pipe through an adjustment hole. A second suction cup is installed on the second adsorption mechanism. The internal space of the second suction cup is communicated with the internal space of the second adsorption mechanism. A second air pipe is also installed on the second adsorption mechanism, and the second air pipe is communicated with the internal space of the second adsorption mechanism;

[0162] A second cylinder is also fixedly installed on the L-shaped plate. The telescopic rod of the second cylinder is connected to the second adsorption mechanism and is used to push the second adsorption mechanism to slide along the sliding seat relative to the L-shaped plate;

[0163] In the process of the adsorption mechanism moving to the first area, no negative pressure is generated. The first cylinder can move freely at the bottom of the telescopic rod of the first cylinder, so as to better fit the first area and achieve a better adsorption effect. Once the adsorption starts, the first adsorption mechanism generates negative pressure, so that the first suction cup tightly adsorbs on the surface of the workpiece to be spin-forged. During adsorption, negative pressure is also generated in the first rubber bellows, so that the first rubber bellows contracts. The first adsorption mechanism and the second adsorption mechanism are connected by a hinge plate. The contraction of the first rubber bellows causes the second adsorption mechanism to rotate towards the first adsorption mechanism. Because the workpiece to be spin-forged has a curvature after spin-forging, the rotation of the second adsorption mechanism towards the first adsorption mechanism can achieve better fitting of the second suction cup to the surface of the workpiece to be spin-forged after spin-forging, so that the adsorption force is greater and a better adsorption effect is achieved. At the same time as the negative pressure is generated, the sealing plate drives the contact rod to move upward until the contact rod abuts against the telescopic rod of the first cylinder. The bottom of the first adsorption mechanism and the telescopic rod of the first cylinder will not shake, so as to ensure that there is no shaking during the process of moving the first adsorption mechanism to separate the workpiece to be spin-forged from the target mold after adsorption, thus avoiding the phenomenon that the workpiece to be spin-forged falls due to excessive shaking of the first adsorption mechanism during the demolding process.

[0164] It should be noted that in this article, 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0165] 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 refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A hot spinning process control method, characterized in that, Including: Prepare the workpiece to be spun, and the workpiece to be spun is a thin disc; Prepare a mold corresponding to the workpiece to be spun, denoted as the target mold; Heat the workpiece to be spun so that the temperature to be spun rises to 800°C - 1000°C; Move the heated workpiece to be spun to a predetermined spinning position; Start the spinning machine and spin the workpiece to be spun. Specifically: Start the rotation of the main shaft of the spinning machine to make the workpiece to be spun rotate at high speed; The spinning wheel feeds slowly along the axial and radial directions, presses the workpiece to be spun against the target mold, and makes it gradually deform and conform to the surface of the target mold; After spinning is completed, obtain a suction area on the workpiece; Obtain the geometric center of the workpiece to be spun, denoted as the first center; Obtain the geometric center of the target surface of the target mold, denoted as the second center; Divide the workpiece to be spun that has completed spinning into two parts, denoted as the first part and the second part respectively; Obtain the differential weights of the two parts of the workpiece to be spun, denoted as the first part differential weight and the second part differential weight respectively; Obtain the suction area according to the differential weights of the two parts of the workpiece to be spun. Specifically: If the first part differential weight is not equal to the second part differential weight, re-make the positioning plane until the positioning plane divides the workpiece to be spun into two parts with equal differential weights; If the first part differential weight is equal to the second part differential weight, obtain the positioning line; set a redundant distance, and the redundant distance is used to obtain the suction area; on both sides of the positioning line in the cross-section of the target mold, make a line parallel to the positioning line and spaced from the positioning line by the redundant distance respectively. The two parts of the target edge between the two lines are denoted as the first area and the second area respectively; the first area and the second area are the suction areas; Control the adsorption mechanism to suck the workpiece to be spun that has completed spinning.

2. A hot spinning process control method according to claim 1, characterized in that: The moving the heated workpiece to be spun to a predetermined spinning position specifically includes: Obtain the geometric center of the workpiece to be spun. Specifically: Arbitrarily select three points that are not on the same straight line on the edge of the workpiece to be spun, denoted as A, B, and C respectively; Connect AB to form a line segment, denoted as the first line segment, obtain the midpoint of the first line segment, and make a line perpendicular to the first line segment on the upper surface of the workpiece to be spun through the midpoint of the first line segment, denoted as the first line; Connect BC to form a line segment, denoted as the second line segment, obtain the midpoint of the second line segment, and make a line perpendicular to the second line segment on the upper surface of the workpiece to be spun through the midpoint of the second line segment, denoted as the second line; The intersection point of the first line and the second line is denoted as the first center, and the first center is the geometric center of the workpiece to be spun; Obtain the working surface of the target mold, denoted as the target surface, and the working surface refers to the surface that directly contacts the workpiece to be spun among the various surfaces of the target mold; Obtain the geometric center of the target surface. Specifically: Arbitrarily select three points that are not on the same straight line on the edge of the target surface, denoted as D, E, and F respectively; Connect DE to form a line segment, denoted as the third line segment, obtain the midpoint of the third line segment, and make a line perpendicular to the third line segment on the target surface through the midpoint of the third line segment, denoted as the third line; Connect EF to form a line segment, denoted as the fourth line segment. Obtain the midpoint of the fourth line segment, and draw a line perpendicular to the fourth line segment on the target surface through the midpoint of the fourth line segment, denoted as the fourth line; The intersection point of the third line and the fourth line is denoted as the second center, and the second center is the geometric center of the target surface; Absorb and move the workpiece to be spin-forged so that the first center coincides with the second center.

3. A hot spinning process control method according to claim 1, characterized in that: The method of dividing the workpiece to be spin-forged that has completed spin-forging into two parts specifically includes: Draw a plane perpendicular to the target surface through the second center, denoted as the auxiliary plane; The auxiliary plane intersects with the target mold to obtain the cross-section of the target mold; The edge of the cross-section of the target mold is denoted as the target edge; The line segment on the target surface in the target edge is denoted as the auxiliary line segment; Arbitrarily draw a line parallel to the auxiliary line segment on the cross-section of the target mold, denoted as the positioning line; The direction in which the auxiliary line segment is perpendicular to the positioning line is denoted as the first direction; Draw a plane perpendicular to the cross-section of the target mold through the positioning line, denoted as the positioning plane; The positioning plane divides the workpiece to be spin-forged that has completed spin-forging into two parts, denoted as the first part and the second part respectively.

4. A hot spinning process control method according to claim 1, characterized in that: The method of obtaining the differential weights of the two parts of the workpiece to be spin-forged specifically includes: Set a segmentation interval, and the segmentation interval is used to obtain the suction area; For the first part, draw an auxiliary plane parallel to the positioning plane every other segmentation interval in the first direction. The auxiliary planes drawn form a set of first auxiliary planes; the auxiliary planes in the set of first auxiliary planes divide the first part into several sub-parts; for a sub-part, computer simulation is used to obtain the weight of this sub-part, denoted as the auxiliary weight; obtain the two auxiliary planes that make up this sub-part, denoted as the first plane and the second plane respectively; obtain the intersection line of the first plane and the cross-section of the target mold, denoted as the first intersection line; obtain the shortest distance from the first intersection line to the positioning plane, denoted as the first distance; obtain the intersection line of the second plane and the cross-section of the target mold, denoted as the second intersection line; obtain the shortest distance from the second intersection line to the positioning plane, denoted as the second distance; calculate (first distance + second distance) / 2, and the calculation result is denoted as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and the result is denoted as the auxiliary result of this sub-part; Obtain the auxiliary results of each sub-part of the first part and calculate the sum of the auxiliary results of each sub-part of the first part, and the calculation result is denoted as the differential weight of the first part.

5. A hot spinning process control method according to claim 4, characterized in that: The method of obtaining the differential weights of the two parts of the workpiece to be spin-forged further includes: For the second part, an auxiliary plane parallel to the positioning plane is made at every other segmentation interval in the first direction, and the made auxiliary planes form a set of second auxiliary planes; the auxiliary planes in the set of second auxiliary planes divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained through computer simulation and denoted as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained and denoted as the third plane and the fourth plane respectively; the intersection line of the third plane and the cross-section of the target mold is obtained and denoted as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained and denoted as the third distance; the intersection line of the fourth plane and the cross-section of the target mold is obtained and denoted as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained and denoted as the fourth distance; calculate (third distance + fourth distance) / 2, and denote the calculation result as the auxiliary distance; calculate the auxiliary weight × the auxiliary distance, and denote the result as the auxiliary result of this sub-part. Obtain the auxiliary results of each sub-part of the second part and calculate the sum of the auxiliary results of each sub-part of the second part, and denote the calculation result as the differential weight of the second part.

6. A hot spinning process control method according to claim 1, characterized in that: The control adsorption mechanism sucks the workpiece to be spun that has completed spinning, which specifically includes: Obtain the lengths of the line segments in the first region, and sort them in descending order of length; select the longest line segment as the first suction region, and obtain the midpoint of the first suction region, denoted as the first midpoint; Obtain the lengths of the line segments in the second region, and sort them in descending order of length; select the longest line segment as the second suction region, and obtain the midpoint of the second suction region, denoted as the second midpoint; Obtain the distance from the first midpoint to the second midpoint, denoted as the first auxiliary distance; Draw a straight line through the first midpoint and the second midpoint, denoted as the target straight line; Set a length threshold, and the length threshold is used to judge whether to extend the second adsorption mechanism; Obtain the line segment length of the line segment where the first suction region is located, denoted as the first length; If the first length is greater than the length threshold, start the second cylinder to extend the second adsorption mechanism; By adjusting the distance between the two first cylinders, make the distance between the two first adsorption mechanisms greater than the first auxiliary distance; Simultaneously extend the two first cylinders so that the adsorption points of the first adsorption mechanisms move to the target straight line; Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanism and the second adsorption mechanism adsorb to the first adsorption region; First, absorb the gas in the first adsorption mechanism through the first air pipe, so that the first suction cup generates negative pressure to adsorb the workpiece to be spun located in the first suction region; Then, absorb the gas in the second adsorption mechanism through the second air pipe, so that the second suction cup generates negative pressure to adsorb the workpiece to be spun located in the first suction region.

7. A hot spinning process control method according to claim 6, characterized in that: The control adsorption mechanism sucking the workpiece to be spun that has completed spinning further includes: If the first length is less than or equal to the length threshold, control the second cylinder to contract; By adjusting the distance between the two first cylinders, make the distance between the two first adsorption mechanisms greater than the first auxiliary distance; Simultaneously extend the two first cylinders so that the adsorption points of the first adsorption mechanisms move to the target straight line; Adjust the distance between the two first cylinders to become smaller until the adsorption points of the first adsorption mechanism adsorb to the first adsorption area; Absorb the gas in the first adsorption mechanism through the first air pipe, so that a negative pressure is generated on the first suction cup to adsorb the workpiece to be spin-formed located in the first suction area.

8. A hot spinning process control method according to claim 1, characterized in that, Comprising: Two first cylinders assembled on the linear guide rail, the bottom of the telescopic rod of the first cylinder is hinged with a first adsorption mechanism. The first adsorption mechanism is a sealed cuboid box structure. A first suction cup is installed on the first adsorption mechanism. The first suction cup is communicated with the internal space of the first adsorption mechanism through a hole. A first air pipe is also assembled on the first adsorption mechanism, and the inside of the first adsorption mechanism is also communicated through the first air pipe.

9. A hot spinning process control method according to claim 1, characterized in that Comprising: The bottom of the first adsorption mechanism is also hinged with a second adsorption mechanism. An L-shaped plate is slidably installed on the second adsorption mechanism. A hinge plate is installed on the L-shaped plate. The hinge plate forms a hinge connection with the first adsorption mechanism. On the side of the L-shaped plate far from the hinge plate, a connection relationship is formed with the first adsorption mechanism through a first rubber bellows. Moreover, the inside of the first adsorption mechanism is communicated with the internal space of the first rubber bellows through an adjustment hole. A second suction cup is installed on the second adsorption mechanism. The internal space of the second suction cup is communicated with the internal space of the second adsorption mechanism. A second air pipe is also installed on the second adsorption mechanism. The second air pipe is communicated with the internal space of the second adsorption mechanism; A second cylinder is also fixedly installed on the L-shaped plate. The telescopic rod of the second cylinder is connected with the second adsorption mechanism and is used to push the second adsorption mechanism to slide along the slide seat relative to the L-shaped plate.

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