Hot spinning machining control method

Abstract

The invention relates to the technical field of hot spinning processing, and discloses a hot spinning processing control method, which comprises the following steps of: firstly, heating a workpiece to be spun to a high-plasticity state at 800-1000 DEG C, accurately determining the workpiece to be spun to be positioned on a working surface of a target mold, acquiring a geometric center by selecting the workpiece and the edge of the mold through a three-point method, and fitting and aligning; and the concentricity and the forming consistency in the spinning process are ensured. And after spinning is completed, the system extracts section information of a finished workpiece, the workpiece is divided into two parts according to the positioning plane, auxiliary plane division is conducted on each part through a manually-set division interval, the differential weight of each sub-part is calculated, and the positioning plane is iteratively adjusted till the differential weights of the two parts are consistent. And for the condition that the differential weights are equal, suction areas are further determined on the cross section of the target mold, a first area and a second area are generated through redundant distance setting parallel to a positioning straight line, and accurate grabbing is completed through cooperative control of multiple suction mechanisms.

Description

Technical Field

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

[0002] Hot spinning is an advanced process that forms metals 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, and it 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 existing solutions for demolding the workpiece. One is to demold manually. Manual demolding often causes the workpiece to bend off the mold. This method will not only damage the workpiece, but also damage the mold; the other is to use a machine for adsorption demolding. However, during the process of adsorption demolding by the machine, the adsorption point is often selected at random, 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 rate of the hot spinning production line by accurately identifying the suction area and working in coordination with the automated adsorption mechanism. Summary of the invention

[0004] The present invention provides a hot spinning process control method, which helps to 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: Preparing a workpiece to be spun, wherein the workpiece to be spun is a thin disc; Prepare a mold corresponding to the workpiece to be spun, which is referred to as a target mold; The workpiece to be spun is heated to raise the temperature to 800°C-1000°C; Moving 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 main shaft of the spinning machine to rotate, so that the workpiece to be spun rotates at high speed; 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 surface of the target mold; After spinning is completed, the suction area is obtained on the workpiece; Obtain the geometric center of the workpiece to be spun, recorded as the first center; Obtain the geometric center of the target surface of the target mold, recorded as the second center; The workpiece to be spun after spinning is divided into two parts, which are respectively referred to as the first part and the second part; Obtaining differential weights of two parts of the workpiece to be spun, which are recorded as the first part differential weight and the second part differential weight respectively; The suction area is obtained according to the differential weight of the two parts of the workpiece to be spun, specifically: If the differential weight of the first part is not equal to the differential weight of the second part, the positioning plane is re-made until the positioning plane divides the workpiece to be spun into two parts with equal differential weights; If the differential weight of the first part is equal to the differential weight of the second part, a positioning straight line is obtained; a redundant distance is set, and the redundant distance is used to obtain a suction area; a straight line parallel to the positioning straight line and separated from the positioning straight line by a redundant distance is made on both sides of the positioning straight line on the cross section of the target mold, and two partial target edges between the two straight lines are respectively recorded as a first area and a second area; the first area and the second area are the suction areas; The adsorption mechanism is controlled to absorb the workpiece to be spun after the spinning is completed.

[0006] Optionally, the step of moving the heated workpiece to be spun to a predetermined spinning position specifically includes: Get the geometric center of the workpiece to be spun, specifically: Randomly select three points on the edge of the workpiece to be spun that are not in a straight line and record them as A, B, and C; Connect AB to form a line segment, which is recorded as the first line segment, obtain the midpoint of the first line segment, and draw a straight 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, which is recorded as the first straight line; Connect BC to form a line segment, which is recorded as the second line segment, obtain the midpoint of the second line segment, and draw a straight 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, which is recorded as the second straight line; The intersection of the first straight line and the second straight line is recorded as the first center, and the first center is the geometric center of the workpiece to be spun; Obtaining a working surface of a target mold, recorded as a target surface, wherein the working surface refers to a surface of each surface of the target mold that directly contacts the workpiece to be spun; Get the geometric center of the target surface, specifically: Randomly select three points on the edge of the target surface that are not on a straight line, and record them as D, E, and F; Connect DE to form a line segment, record it as the third line segment, obtain the midpoint of the third line segment, and draw a straight line perpendicular to the third line segment on the target surface through the midpoint of the third line segment, record it as the third straight line; Connect EF to form a line segment, record it as the fourth line segment, obtain the midpoint of the fourth line segment, and draw a straight line perpendicular to the fourth line segment on the target surface through the midpoint of the fourth line segment, record it as the fourth straight line; The intersection of the third straight line and the fourth straight line is recorded as the second center, and the second center is the geometric center of the target surface; The workpiece to be spun is sucked and moved so that the first center and the second center are aligned.

[0007] Optionally, the step of dividing the workpiece to be spun after spinning into two parts specifically includes: Construct a plane perpendicular to the target plane through the second center, which is called the auxiliary plane; The auxiliary surface intersects with the target mold to obtain a cross section of the target mold; The cross-sectional edge of the target mold is recorded as the target edge; The line segment where the target surface is located in the target edge is recorded as an auxiliary line segment; Make a straight line parallel to the auxiliary line segment on the cross section of the target mold, which is recorded as the positioning line; The direction in which the auxiliary line segment points perpendicularly to the positioning straight line is recorded as the first direction; Make a plane perpendicular to the cross section of the target mold through the positioning straight line, which is recorded as the positioning plane; The positioning plane divides the workpiece to be spun after spinning into two parts, which are respectively recorded as the first part and the second part.

[0008] Optionally, the step of obtaining the differential weight of the two parts of the workpiece to be spun specifically includes: Setting a segmentation interval, wherein the segmentation interval is used to obtain an absorption area; For the first part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the first auxiliary plane set; the auxiliary planes in the first auxiliary plane set divide the first part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded as the first plane and the second plane respectively; the intersection line of the first plane and the cross section of the target mold is obtained, which is recorded as the first intersection line; the shortest distance from the first intersection line to the positioning plane is obtained, which is recorded as the first distance; the intersection line of the second plane and the cross section of the target mold is obtained, which is recorded as the second intersection line; the shortest distance from the second intersection line to the positioning plane is obtained, which is recorded as the second distance; (first distance + second distance) / 2 is calculated, and the calculation result is recorded as the auxiliary distance; the auxiliary weight × auxiliary distance is calculated, and the result is recorded as the auxiliary result of this sub-part; The auxiliary results of each sub-part of the first part are obtained and the sum of the auxiliary results of each sub-part of the first part is calculated, and the calculated result is recorded as the differential weight of the first part.

[0009] Optionally, the step of obtaining the differential weight of the two parts of the workpiece to be spun further includes: For the second part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the second auxiliary plane set; the auxiliary planes in the second auxiliary plane set divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded 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, which is recorded as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained, which is recorded as the third distance; the intersection line of the fourth plane and the cross section of the target mold is obtained, which is recorded as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained, which is recorded as the fourth distance; calculate (third distance + fourth distance) / 2, and the calculation result is recorded as the auxiliary distance; calculate the auxiliary weight×auxiliary distance, and the result is recorded as the auxiliary result of this sub-part; The auxiliary results of each sub-part of the second part are obtained and the sum of the auxiliary results of each sub-part of the second part is calculated, and the calculated result is recorded as the differential weight of the second part.

[0010] Optionally, the controlling the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed specifically includes: Obtain the length of each line segment in the first area, and sort them in descending order of length; select the longest line segment as the first absorption area, obtain the midpoint of the first absorption area, and record it as the first midpoint; Obtain the length of each line segment in the second area, and sort them in descending order of length; select the longest line segment as the second absorption area, obtain the midpoint of the second absorption area, and record it as the second midpoint; Get the distance from the first midpoint to the second midpoint, recorded as the first auxiliary distance; Draw a straight line through the first midpoint and the second midpoint, and record it as the target straight line; Setting a length threshold, wherein the length threshold is used to determine whether the second adsorption mechanism is extended; Obtain the length of the line segment where the first absorption area is located, and record it as the first length; If the first length is greater than the length threshold, the second cylinder is activated to extend the second adsorption mechanism; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjusting the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism and the adsorption point of the second adsorption mechanism are adsorbed to the first adsorption area; First, the gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed; Then, the gas in the second adsorption mechanism is absorbed through the second air pipe, so that the second suction cup generates negative pressure, and the workpiece to be spun located in the first absorption area is adsorbed.

[0011] Optionally, the controlling the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed also includes: If the first length is less than or equal to the length threshold, controlling the second cylinder to contract; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjust the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism is adsorbed to the first adsorption area; The gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed.

[0012] Optional, including: Two first cylinders are assembled on the 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, which meshes with the tooth groove on the slide rail through the gear on the motor. When the motor is controlled to rotate, the slider can slide on the slide rail. A first adsorption mechanism is hinged at the bottom of the telescopic rod of the first cylinder. A rotating shaft is fixedly installed on the first adsorption mechanism, and the rotating shaft is rotatably installed on 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 a 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 connected to the internal space of the first adsorption mechanism through a hole. The first adsorption mechanism is also equipped with a first air pipe, and the interior of the first adsorption mechanism is also connected through the first air pipe.

[0013] Optional, including: 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, the sliding seat is slidably installed in a groove opened by the second adsorption mechanism, the internal space of the groove matches the sliding seat, a hinge plate is installed on the L-shaped plate, the hinge plate is hingedly connected to the first adsorption mechanism, a side of the L-shaped plate away from the hinge plate is connected to the first adsorption mechanism through a first rubber bellows, and the interior of the first adsorption mechanism is connected to 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 connected to the internal space of the second adsorption mechanism, and a second air pipe is also installed on the second adsorption mechanism, and the second air pipe is connected to the internal space of the second adsorption mechanism; A second cylinder is also fixedly mounted on the L-shaped plate, and a telescopic rod of the second cylinder is connected to the second adsorption mechanism to push the second adsorption mechanism to slide along the slide seat relative to the L-shaped plate.

[0014] The present invention has the following beneficial effects: 1. A hot spinning control method, when obtaining the geometric center of the workpiece to be spun, three points on the edge are randomly selected and connected in pairs, and two line segments are randomly selected through the midpoints of the line segments to make a straight line perpendicular to the line segments. The intersection of the straight lines is the geometric center of the workpiece to be spun. The same operation is performed when obtaining the geometric center of the target mold. The geometric center is obtained by selecting three points on the edge of the workpiece to be spun and the target mold respectively and constructing a perpendicular bisector to ensure that the concentricity between the workpiece and the mold reaches an ideal state. The material can flow evenly under the action of the spinning load to avoid uneven wall thickness or local excessive stretching caused by eccentricity, thereby effectively improving the quality qualification rate of parts.

[0015] 2. This hot spinning processing control method divides the completed spinning workpiece into two parts according to the positioning plane, and uses the segmentation interval to generate multiple auxiliary planes, and performs computer simulation weight solution and distance weighting on each sub-area to form an auxiliary result, thereby ensuring that the auxiliary weight of the first part and the auxiliary weight of the second part are equal. The present invention can accurately evaluate the contribution of each area to the center of gravity and dynamically adjust the positioning plane to ensure that the differential weights of the two parts are consistent, further optimize the placement path and the selection of the suction point, and avoid the situation where the actual weights of the two parts are equal but the lengths of the two parts are unequal, resulting in different calculation results of the two parts force × lever arm, resulting in the phenomenon of unstable center of gravity and workpiece falling off during adsorption.

[0016] 3. This hot spinning processing control method uses the positioning straight line as a reference on the target mold cross section, sets an adjustable redundant distance in the parallel direction, constructs the first area and the second area, ensures that a reasonable absorption area can be generated within the range of different part cross-sectional shapes and sizes, and enhances the versatility and adaptability of the adsorption mechanism.

[0017] 4. A hot spinning processing control method sets a length threshold and determines whether to extend the second adsorption mechanism through the 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 adsorption area is sufficient. At this time, extending the second adsorption mechanism can increase the adsorption force and ensure that the workpiece is firmly adsorbed; if the first length is less than or equal to the length threshold, it means that the adsorption area is not long enough and can only accommodate one adsorption mechanism for adsorption, so there is no need to extend the second adsorption mechanism.

[0018] 5. In the hot spinning control method, no negative pressure is generated during the movement of the adsorption mechanism to the first area, 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 area and achieve a better adsorption effect; once the adsorption starts, the first adsorption mechanism generates negative pressure, so that the first suction cup is tightly adsorbed on the surface of the workpiece to be spun, and during adsorption, negative pressure is also generated in the first rubber bellows, so that the first rubber bellows contracts, and 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 in the direction of the first adsorption mechanism, because the workpiece to be spun after the spinning is completed The part has an arc, so the second adsorption mechanism rotates toward the direction of the first adsorption mechanism to make the second suction cup better fit the surface of the workpiece to be spun after the spinning is completed, thereby making the adsorption force stronger and achieving a better adsorption effect; while generating negative pressure, the sealing plate will drive the resistance rod to move upward until the resistance rod resists the telescopic rod of the first cylinder, and the first adsorption mechanism and the bottom of the telescopic rod of the first cylinder will not shake, thereby ensuring that after the adsorption is completed, the first adsorption mechanism will not shake during the process of moving the workpiece to be spun to separate from the target mold, thereby avoiding the phenomenon that the first adsorption mechanism shakes excessively during the demolding process and causes the workpiece to be spun to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the first cylinder of the present invention.

[0020] Figure 2 It is a cross-sectional schematic diagram of the first adsorption mechanism and the second adsorption mechanism of the present invention.

[0021] Figure 3 It is a schematic diagram of the assembly of the second adsorption mechanism and the L-shaped plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the assembly of the limiting plate of the present invention.

[0023] Figure 5 It is a schematic diagram of the first area and the second area of ​​the present invention.

[0024] In the figure: 1. slide rail, 2. motor, 3. slider, 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. hinged plate, 15. first air pipe, 16. third air pipe, 17 sealing plate, 18. second rubber bellows, 19. limiting plate, 20. resistance rod, 21. contraction space, 22. connecting rod, 23. L-shaped plate, 24. sliding seat, 25. second cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example, see Figure 1-Figure 5 , a hot spinning process control method, comprising: Preparing a workpiece to be spun, wherein the workpiece to be spun is a thin disc; Prepare a mold corresponding to the workpiece to be spun, which is referred to as a target mold; The workpiece to be spun is heated to raise the temperature to 800°C-1000°C; Moving 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 main shaft of the spinning machine to rotate, so that the workpiece to be spun rotates at high speed; 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 surface of the target mold; After spinning is completed, the suction area is obtained on the workpiece; Obtain the geometric center of the workpiece to be spun, recorded as the first center; Obtain the geometric center of the target surface of the target mold, recorded as the second center; The workpiece to be spun after spinning is divided into two parts, which are respectively recorded as the first part and the second part; Obtaining differential weights of two parts of the workpiece to be spun, which are recorded as the first part differential weight and the second part differential weight respectively; The suction area is obtained according to the differential weight of the two parts of the workpiece to be spun, specifically: If the differential weight of the first part is not equal to the differential weight of the second part, the positioning plane is re-made until the positioning plane divides the workpiece to be spun into two parts with equal differential weights; If the differential weight of the first part is equal to the differential weight of the second part, a positioning straight line is obtained; a redundant distance is set, and the redundant distance is used to obtain a suction area; a straight line parallel to the positioning straight line and separated from the positioning straight line by a redundant distance is made on both sides of the positioning straight line on the cross section of the target mold, and two partial target edges between the two straight lines are respectively recorded as a first area and a second area; the first area and the second area are the suction areas; A hot spinning processing control method is provided, which takes a positioning straight line as a reference on a target mold cross section, sets an adjustable redundant distance in a parallel direction, constructs a first area and a second area, ensures that a reasonable suction area can be generated within a range of different part cross-sectional shapes and sizes, and enhances the versatility and adaptability of the suction mechanism; The adsorption mechanism is controlled to absorb the workpiece to be spun after the spinning is completed.

[0027] The step of moving the heated workpiece to be spun to a predetermined spinning position specifically includes: Get the geometric center of the workpiece to be spun, specifically: Randomly select three points on the edge of the workpiece to be spun that are not in a straight line and record them as A, B, and C; Connect AB to form a line segment, which is recorded as the first line segment, obtain the midpoint of the first line segment, and draw a straight 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, which is recorded as the first straight line; Connect BC to form a line segment, which is recorded as the second line segment, obtain the midpoint of the second line segment, and draw a straight 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, which is recorded as the second straight line; The intersection of the first straight line and the second straight line is recorded as the first center, and the first center is the geometric center of the workpiece to be spun; Obtaining a working surface of a target mold, recorded as a target surface, wherein the working surface refers to a surface of each surface of the target mold that directly contacts the workpiece to be spun; Get the geometric center of the target surface, specifically: Randomly select three points on the edge of the target surface that are not on a straight line, and record them as D, E, and F; Connect DE to form a line segment, record it as the third line segment, obtain the midpoint of the third line segment, and draw a straight line perpendicular to the third line segment on the target surface through the midpoint of the third line segment, record it as the third straight line; Connect EF to form a line segment, record it as the fourth line segment, obtain the midpoint of the fourth line segment, and draw a straight line perpendicular to the fourth line segment on the target surface through the midpoint of the fourth line segment, record it as the fourth straight line; The intersection of the third straight line and the fourth straight line is recorded as the second center, and the second center is the geometric center of the target surface; Suction and move the workpiece to be spun so that the first center and the second center fit together; The hot spinning control method obtains the geometric center of the workpiece to be spun by arbitrarily selecting three points on the edge on a straight line and connecting them two by two, and arbitrarily selecting two line segments through the midpoints of the line segments to make a straight line perpendicular to the line segments. The intersection of the straight lines is the geometric center of the workpiece to be spun. The same operation is performed when obtaining the geometric center of the target mold. The geometric center is obtained by selecting three points on the edge of the workpiece to be spun and the target mold respectively and constructing a perpendicular bisector to ensure that the concentricity between the workpiece and the mold reaches an ideal state. The material can flow evenly under the action of the spinning load to avoid uneven wall thickness or local excessive stretching caused by eccentricity, thereby effectively improving the quality qualification rate of parts.

[0028] The method of dividing the workpiece to be spun after spinning into two parts specifically includes: Construct a plane perpendicular to the target plane through the second center, which is called the auxiliary plane; The auxiliary surface intersects with the target mold to obtain a cross section of the target mold; The cross-sectional edge of the target mold is recorded as the target edge; The line segment where the target surface is located in the target edge is recorded as an auxiliary line segment; Make a straight line parallel to the auxiliary line segment on the cross section of the target mold, which is recorded as the positioning line; The direction in which the auxiliary line segment points perpendicularly to the positioning straight line is recorded as the first direction; Make a plane perpendicular to the cross section of the target mold through the positioning straight line, which is recorded as the positioning plane; The positioning plane divides the workpiece to be spun after spinning into two parts, which are respectively recorded as the first part and the second part.

[0029] The step of obtaining the differential weight of the two parts of the workpiece to be spun specifically includes: Setting a segmentation interval, wherein the segmentation interval is used to obtain an absorption area; For the first part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the first auxiliary plane set; the auxiliary planes in the first auxiliary plane set divide the first part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded as the first plane and the second plane respectively; the intersection line of the first plane and the cross section of the target mold is obtained, which is recorded as the first intersection line; the shortest distance from the first intersection line to the positioning plane is obtained, which is recorded as the first distance; the intersection line of the second plane and the cross section of the target mold is obtained, which is recorded as the second intersection line; the shortest distance from the second intersection line to the positioning plane is obtained, which is recorded as the second distance; (first distance + second distance) / 2 is calculated, and the calculation result is recorded as the auxiliary distance; the auxiliary weight × auxiliary distance is calculated, and the result is recorded as the auxiliary result of this sub-part; The auxiliary results of each sub-part of the first part are obtained and the sum of the auxiliary results of each sub-part of the first part is calculated, and the calculated result is recorded as the differential weight of the first part.

[0030] The step of obtaining the differential weight of the two parts of the workpiece to be spun also includes: For the second part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the second auxiliary plane set; the auxiliary planes in the second auxiliary plane set divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded 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, which is recorded as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained, which is recorded as the third distance; the intersection line of the fourth plane and the cross section of the target mold is obtained, which is recorded as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained, which is recorded as the fourth distance; calculate (third distance + fourth distance) / 2, and the calculation result is recorded as the auxiliary distance; calculate the auxiliary weight×auxiliary distance, and the result is recorded as the auxiliary result of this sub-part; Obtaining the auxiliary results of each sub-part of the second part and calculating the sum of the auxiliary results of each sub-part of the second part, and recording the calculation result as the differential weight of the second part; The hot spinning control method divides the completed spinning workpiece into two parts according to the positioning plane, generates multiple auxiliary planes with segmentation intervals, and performs computer simulation weight solution and distance weighting on each sub-area to form an auxiliary result, thereby ensuring that the auxiliary weight of the first part and the auxiliary weight of the second part are equal. The present invention can accurately evaluate the contribution of each area to the center of gravity and dynamically adjust the positioning plane to ensure that the differential weights of the two parts are consistent, further optimize the placement path and the selection of the suction point, and avoid the situation where the actual weights of the two parts are equal but the lengths of the two parts are unequal, thereby causing the calculation results of the two parts force × lever arm to be different, thereby causing the center of gravity to be unstable during adsorption and the workpiece to fall off.

[0031] The controlling the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed specifically includes: Obtain the length of each line segment in the first area, and sort them in descending order of length; select the longest line segment as the first absorption area, obtain the midpoint of the first absorption area, and record it as the first midpoint; Obtain the length of each line segment in the second area, and sort them in descending order of length; select the longest line segment as the second absorption area, obtain the midpoint of the second absorption area, and record it as the second midpoint; Get the distance from the first midpoint to the second midpoint, recorded as the first auxiliary distance; Draw a straight line through the first midpoint and the second midpoint, and record it as the target straight line; Setting a length threshold, wherein the length threshold is used to determine whether the second adsorption mechanism is extended; Obtain the length of the line segment where the first absorption area is located, and record it as the first length; If the first length is greater than the length threshold, the second cylinder is activated to extend the second adsorption mechanism; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjusting the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism and the adsorption point of the second adsorption mechanism are adsorbed to the first adsorption area; First, the gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed; Then, the gas in the second adsorption mechanism is absorbed through the second air pipe, so that the second suction cup generates negative pressure, and the workpiece to be spun located in the first absorption area is adsorbed.

[0032] The control of the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed also includes: If the first length is less than or equal to the length threshold, controlling the second cylinder to contract; Since the first adsorption area and the second adsorption area are symmetrical figures, it is only necessary to determine the first length; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjust the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism is adsorbed to the first adsorption area; The gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed; A hot spinning processing control method sets a length threshold and determines whether to extend the second adsorption mechanism through the 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 adsorption area is sufficient. At this time, extending the second adsorption mechanism can increase the adsorption force and ensure that the workpiece is firmly adsorbed; if the first length is less than or equal to the length threshold, it means that the adsorption area is not long enough and can only accommodate one adsorption mechanism for adsorption, so there is no need to extend the second adsorption mechanism.

[0033] include: Two first cylinders are assembled on the 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, which meshes with the tooth groove on the slide rail through the gear on the motor. When the motor is controlled to rotate, the slider can slide on the slide rail. A first adsorption mechanism is hinged at the bottom of the telescopic rod of the first cylinder. A rotating shaft is fixedly installed on the first adsorption mechanism, and the rotating shaft is rotatably installed on 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 a 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 connected to the internal space of the first adsorption mechanism through a hole. The first adsorption mechanism is also equipped with a first air pipe, and the interior of the first adsorption mechanism is also connected through the first air pipe.

[0034] include: 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, the sliding seat is slidably installed in a groove opened by the second adsorption mechanism, the internal space of the groove matches the sliding seat, a hinge plate is installed on the L-shaped plate, the hinge plate is hingedly connected to the first adsorption mechanism, a side of the L-shaped plate away from the hinge plate is connected to the first adsorption mechanism through a first rubber bellows, and the interior of the first adsorption mechanism is connected to 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 connected to the internal space of the second adsorption mechanism, and a second air pipe is also installed on the second adsorption mechanism, and the second air pipe is connected to the internal space of the second adsorption mechanism; A second cylinder is also fixedly mounted on the L-shaped plate, and a 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 slide relative to the L-shaped plate; The hot spinning processing control method does not generate negative pressure during the movement of the adsorption mechanism to the first area, 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 area and achieve a better adsorption effect; once the adsorption starts, the first adsorption mechanism generates negative pressure, so that the first suction cup is tightly adsorbed on the surface of the workpiece to be spun, and during adsorption, negative pressure is also generated in the first rubber bellows, so that the first rubber bellows contracts, and the first adsorption mechanism and the second adsorption mechanism are connected through a hinge plate. The contraction of the first rubber bellows causes the second adsorption mechanism to rotate in the direction of the first adsorption mechanism, because the workpiece to be spun after the spinning is completed It has an arc, so the second adsorption mechanism rotates in the direction of the first adsorption mechanism to make the second suction cup better fit the surface of the workpiece to be spun after the spinning is completed, thereby making the adsorption force stronger and achieving a better adsorption effect; while generating negative pressure, the sealing plate will drive the resistance rod to move upward until the resistance rod resists the telescopic rod of the first cylinder, and the first adsorption mechanism and the bottom of the telescopic rod of the first cylinder will not shake, thereby ensuring that after the adsorption is completed, the first adsorption mechanism will not shake during the process of moving the workpiece to be spun to separate from the target mold, thereby avoiding the phenomenon that the first adsorption mechanism shakes excessively during the demolding process and causes the workpiece to be spun to fall off.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hot spinning process control method, characterized in that: include: Preparing a workpiece to be spun, wherein the workpiece to be spun is a thin disc; Prepare a mold corresponding to the workpiece to be spun, which is referred to as a target mold; The workpiece to be spun is heated to raise the temperature to 800°C-1000°C; Moving 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 main shaft of the spinning machine to rotate, so that the workpiece to be spun rotates at high speed; 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 surface of the target mold; After spinning is completed, the suction area is obtained on the workpiece; Obtain the geometric center of the workpiece to be spun, recorded as the first center; Obtain the geometric center of the target surface of the target mold, recorded as the second center; The workpiece to be spun after spinning is divided into two parts, which are respectively referred to as the first part and the second part; Obtaining differential weights of two parts of the workpiece to be spun, which are recorded as the first part differential weight and the second part differential weight respectively; The suction area is obtained according to the differential weight of the two parts of the workpiece to be spun, specifically: If the differential weight of the first part is not equal to the differential weight of the second part, the positioning plane is re-made until the positioning plane divides the workpiece to be spun into two parts with equal differential weights; If the differential weight of the first part is equal to the differential weight of the second part, a positioning straight line is obtained; a redundant distance is set, and the redundant distance is used to obtain a suction area; a straight line parallel to the positioning straight line and separated from the positioning straight line by a redundant distance is made on both sides of the positioning straight line on the cross section of the target mold, and two partial target edges between the two straight lines are respectively recorded as a first area and a second area; the first area and the second area are the suction areas; The adsorption mechanism is controlled to absorb the workpiece to be spun after the spinning is completed.

2. A hot spinning process control method according to claim 1, characterized in that: The step of moving the heated workpiece to be spun to a predetermined spinning position specifically includes: Get the geometric center of the workpiece to be spun, specifically: Randomly select three points on the edge of the workpiece to be spun that are not in a straight line and record them as A, B, and C; Connect AB to form a line segment, which is recorded as the first line segment, obtain the midpoint of the first line segment, and draw a straight 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, which is recorded as the first straight line; Connect BC to form a line segment, which is recorded as the second line segment, obtain the midpoint of the second line segment, and draw a straight 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, which is recorded as the second straight line; The intersection of the first straight line and the second straight line is recorded as the first center, and the first center is the geometric center of the workpiece to be spun; Obtaining a working surface of a target mold, recorded as a target surface, wherein the working surface refers to a surface of each surface of the target mold that directly contacts the workpiece to be spun; Get the geometric center of the target surface, specifically: Randomly select three points on the edge of the target surface that are not on a straight line, and record them as D, E, and F; Connect DE to form a line segment, record it as the third line segment, obtain the midpoint of the third line segment, and draw a straight line perpendicular to the third line segment on the target surface through the midpoint of the third line segment, record it as the third straight line; Connect EF to form a line segment, record it as the fourth line segment, obtain the midpoint of the fourth line segment, and draw a straight line perpendicular to the fourth line segment on the target surface through the midpoint of the fourth line segment, record it as the fourth straight line; The intersection of the third straight line and the fourth straight line is recorded as the second center, and the second center is the geometric center of the target surface; The workpiece to be spun is sucked and moved so that the first center and the second center are aligned.

3. A hot spinning process control method according to claim 1, characterized in that: The method of dividing the workpiece to be spun after spinning into two parts specifically includes: Construct a plane perpendicular to the target plane through the second center, which is called the auxiliary plane; The auxiliary surface intersects with the target mold to obtain a cross section of the target mold; The cross-sectional edge of the target mold is recorded as the target edge; The line segment where the target surface is located in the target edge is recorded as an auxiliary line segment; Make a straight line parallel to the auxiliary line segment on the cross section of the target mold, which is recorded as the positioning line; The direction in which the auxiliary line segment points perpendicularly to the positioning straight line is recorded as the first direction; Make a plane perpendicular to the cross section of the target mold through the positioning straight line, which is recorded as the positioning plane; The positioning plane divides the workpiece to be spun after spinning into two parts, which are respectively recorded as the first part and the second part.

4. A hot spinning process control method according to claim 1, characterized in that: The step of obtaining the differential weight of the two parts of the workpiece to be spun specifically includes: Setting a segmentation interval, wherein the segmentation interval is used to obtain an absorption area; For the first part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the first auxiliary plane set; the auxiliary planes in the first auxiliary plane set divide the first part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded as the first plane and the second plane respectively; the intersection line of the first plane and the cross section of the target mold is obtained, which is recorded as the first intersection line; the shortest distance from the first intersection line to the positioning plane is obtained, which is recorded as the first distance; the intersection line of the second plane and the cross section of the target mold is obtained, which is recorded as the second intersection line; the shortest distance from the second intersection line to the positioning plane is obtained, which is recorded as the second distance; calculate (first distance + second distance) / 2, and the calculation result is recorded as the auxiliary distance; calculate the auxiliary weight × auxiliary distance, and the result is recorded as the auxiliary result of this sub-part; The auxiliary results of each sub-part of the first part are obtained and the sum of the auxiliary results of each sub-part of the first part is calculated, and the calculated result is recorded as the differential weight of the first part.

5. A hot spinning process control method according to claim 4, characterized in that: The step of obtaining the differential weight of the two parts of the workpiece to be spun also includes: For the second part, make an auxiliary plane parallel to the positioning plane at every division interval in the first direction, and the auxiliary planes constitute the second auxiliary plane set; the auxiliary planes in the second auxiliary plane set divide the second part into several sub-parts; for a sub-part, the weight of this sub-part is obtained by computer simulation, which is recorded as the auxiliary weight; the two auxiliary planes constituting this sub-part are obtained, which are recorded 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, which is recorded as the third intersection line; the shortest distance from the third intersection line to the positioning plane is obtained, which is recorded as the third distance; the intersection line of the fourth plane and the cross section of the target mold is obtained, which is recorded as the fourth intersection line; the shortest distance from the fourth intersection line to the positioning plane is obtained, which is recorded as the fourth distance; calculate (third distance + fourth distance) / 2, and the calculation result is recorded as the auxiliary distance; calculate the auxiliary weight×auxiliary distance, and the result is recorded as the auxiliary result of this sub-part; The auxiliary results of each sub-part of the second part are obtained and the sum of the auxiliary results of each sub-part of the second part is calculated, and the calculated result is recorded as the differential weight of the second part.

6. A hot spinning process control method according to claim 1, characterized in that: The controlling the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed specifically includes: Obtain the length of each line segment in the first area, and sort them in descending order of length; select the longest line segment as the first absorption area, obtain the midpoint of the first absorption area, and record it as the first midpoint; Obtain the length of each line segment in the second area, and sort them in descending order of length; select the longest line segment as the second absorption area, obtain the midpoint of the second absorption area, and record it as the second midpoint; Get the distance from the first midpoint to the second midpoint, recorded as the first auxiliary distance; Draw a straight line through the first midpoint and the second midpoint, and record it as the target straight line; Setting a length threshold, wherein the length threshold is used to determine whether the second adsorption mechanism is extended; Obtain the length of the line segment where the first absorption area is located, and record it as the first length; If the first length is greater than the length threshold, the second cylinder is activated to extend the second adsorption mechanism; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjusting the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism and the adsorption point of the second adsorption mechanism are adsorbed to the first adsorption area; First, the gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed; Then, the gas in the second adsorption mechanism is absorbed through the second air pipe, so that the second suction cup generates negative pressure, and the workpiece to be spun located in the first absorption area is adsorbed.

7. A hot spinning control method according to claim 6, characterized in that: The control of the adsorption mechanism to absorb the workpiece to be spun after the spinning is completed also includes: If the first length is less than or equal to the length threshold, controlling the second cylinder to contract; By adjusting the distance between the two first cylinders, the distance between the two first adsorption mechanisms is made larger than the first auxiliary distance; Simultaneously extending the two first cylinders so that the adsorption point of the first adsorption mechanism moves to the target straight line; Adjust the distance between the two first cylinders to become smaller until the adsorption point of the first adsorption mechanism is adsorbed to the first adsorption area; The gas in the first adsorption mechanism is absorbed through the first air pipe, so that the first suction cup generates negative pressure, and the workpiece to be spun located in the first suction area is adsorbed.

8. A hot spinning process control method according to claim 1, characterized in that: include: Two first cylinders are assembled on the linear guide rail, and the bottom of the telescopic rod of the first cylinder is hinged with a first adsorption mechanism, 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 connected to the internal space of the first adsorption mechanism through a hole, and the first adsorption mechanism is also equipped with a first air pipe, and the interior of the first adsorption mechanism is also connected through the first air pipe.

9. A hot spinning process control method according to claim 1, characterized in that: include: The bottom of the first adsorption mechanism is also hinged with a second adsorption mechanism, an L-shaped plate is slidably mounted on the second adsorption mechanism, a hinge plate is mounted on the L-shaped plate, the hinge plate is hingedly connected to the first adsorption mechanism, a side of the L-shaped plate away from the hinge plate is connected to the first adsorption mechanism through a first rubber bellows, and the interior of the first adsorption mechanism is connected to the internal space of the first rubber bellows through an adjustment hole, a second suction cup is mounted on the second adsorption mechanism, the internal space of the second suction cup is connected to the internal space of the second adsorption mechanism, and a second air pipe is also mounted on the second adsorption mechanism, the second air pipe is connected to the internal space of the second adsorption mechanism; A second cylinder is also fixedly mounted on the L-shaped plate, and a telescopic rod of the second cylinder is connected to the second adsorption mechanism to push the second adsorption mechanism to slide along the slide seat relative to the L-shaped plate.

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