Machining method and system for hollow screw rotor structure

Abstract

The invention relates to a processing method and system of a hollow screw rotor structure, and relates to the technical field of screw rotors, and the processing method comprises the following steps: acquiring required processing specifications and weight detection information; determining rotation control parameters according to the required machining specification, and controlling the hollow blank subjected to deep hole machining to rotate based on the rotation control parameters so as to collect rotation detection parameters; determining a rotation deviation parameter in combination with the rotation control parameter and the rotation detection parameter; hollow machining parameters and hollow machining position points are generated according to the rotation deviation parameters, the weight detection information and the required machining specifications; and the hollow blank is machined based on the hollow machining position point and the hollow machining parameters. The screw rotor has the effect of prolonging the service life of the screw rotor.

Description

Technical Field

[0001] This invention relates to the field of screw rotor technology, and in particular to a method and system for processing a hollow screw rotor structure. Background Technology

[0002] The screw rotor is the core component of fluid machinery such as screw compressors and vacuum pumps. Its function is to compress, transport, and mix gases or liquids through the rotational motion of helical teeth.

[0003] Because solid screw rotors have high overall metal density and are heavy, they generate enormous inertial forces during high-speed operation. This not only increases the energy consumption of the motor drive but also intensifies the radial / axial load on the bearings, leading to a shortened bearing life. To reduce weight and energy consumption and lower operating load in high-speed or large-size applications, hollow screw rotors are generally used. Currently, the process typically involves first deep-hole machining of the solid blank, followed by rough machining of the reference surface and outer shape, rough milling of the helical tooth profile, heat treatment for strengthening, precision grinding of the tooth surface using a specialized screw grinder, and finally surface treatment to complete the machining of the solid screw rotor.

[0004] During the deep hole machining process of solid blanks, tool holder oscillation is prone to occur, causing the inner hole and outer circle to be misaligned. This results in one side of the wall being thicker than the other, causing uneven weight distribution and the center of mass deviating from the rotation axis of the screw rotor. This increases friction in the kinematic pairs and internal stress in the components, reducing the mechanical efficiency and service life of the screw rotor. Summary of the Invention

[0005] To extend the service life of screw rotors, this invention provides a processing method and system for a hollow screw rotor structure.

[0006] In a first aspect, the present invention provides a method for processing a hollow screw rotor structure, employing the following technical solution: A method for machining a hollow screw rotor structure includes: S1: Collect required processing specifications and weight inspection information; S2: Determine the rotation control parameters according to the required processing specifications, and control the rotation of the hollow blank after deep hole processing based on the rotation control parameters to collect rotation detection parameters; S3: Determine the rotation deviation parameter by combining the rotation control parameter and the rotation detection parameter; S4: Generate hollow machining parameters and hollow machining location points based on rotational deviation parameters, weight detection information, and required machining specifications; S5: Process the hollow blank based on the hollow processing location and hollow processing parameters.

[0007] By adopting the above technical solution, the required processing specifications and weight detection information are first collected, then the rotation control parameters are determined based on the required processing specifications and the rotation detection parameters are collected, and then the rotation deviation parameters are determined by combining the two. Finally, the hollow processing parameters and hollow processing position points are generated based on the rotation deviation parameters, weight detection information and required processing specifications, and the processing is carried out. This effectively eliminates the problems of rotation deviation and uneven weight distribution of hollow blanks after deep hole processing, ensuring that the processed hollow screw rotor structure meets the required processing specifications, reducing the risk of subsequent deviation of the center of mass from the rotation axis, and extending the service life of the screw rotor.

[0008] Optional methods for generating hollow machining parameters and hollow machining location points include: S41: Generate the weight distribution center point based on the weight detection information; S42: Determine the center of gravity of the specifications based on the required processing specifications; S43: Determine the center of gravity offset vector value by combining the weight distribution center point and the specification center of gravity location point; S44: Determine the reference parameters for center of gravity offset based on the center of gravity offset vector value; S45: Generate the offset selection vector value based on the rotational deviation parameter, the center of gravity offset reference parameter, and the center of gravity offset vector value; S46: Combine the offset vector value with the weight distribution center point to determine the center of gravity offset adjustment position; S47: Determine the rotation deviation machining parameters based on the rotation deviation parameters, and use the rotation deviation machining parameters as the hollow machining parameters, and use the center of gravity offset adjustment position point as the hollow machining position point.

[0009] By adopting the above technical solution, the center point of weight distribution is generated through weight detection information, and the center of gravity offset vector value is determined in combination with the required processing specifications. Finally, the center of gravity offset adjustment position point and rotation deviation processing parameters are determined and used as the hollow processing position point and hollow processing parameters, respectively. This allows for direct and targeted correction of the center of gravity offset, improving the coincidence between the rotor's center of mass and the rotation axis.

[0010] Optionally, methods for generating the center point of the weight distribution include: S411: Collect ambient temperature value; S412: Retrieve weight detection location points and weight detection values ​​based on weight detection information; S413: Generate environmental impact values ​​by combining weight detection location points and ambient temperature values; S414: Calculate the product between the environmental impact value and the weight measurement value and use it as the weight adjustment value; S415: Generate a weight distribution map by combining weight detection location points and weight adjustment values; S416: Select the center point of weight based on the weight distribution map, and use the center point of weight as the center point of weight distribution.

[0011] By adopting the above technical solution, the ambient temperature value is collected, and the weight detection location point and weight detection value are retrieved. The environmental impact value is analyzed to calculate the weight adjustment value, and then a weight distribution map is generated. The weight center location point is selected as the weight distribution center point. This fully considers the interference of ambient temperature on the weight detection results. The weight detection value is corrected by the environmental impact value, so that the generated weight adjustment value is closer to the actual weight state of the hollow billet. As a result, the weight distribution map and the weight distribution center point are more accurate, providing reliable basic data for subsequent center of gravity offset analysis and avoiding the weight distribution judgment deviation caused by ambient temperature.

[0012] Optional methods for generating environmental impact values ​​include: S4131: Determine the blank outline location points, blank diameter value, and blank length value based on the required processing specifications; S4132: Select the nearest blank contour position point based on the weight detection position point and use it as the nearest contour position point; S4133: The detection distance vector value is calculated based on the nearest contour location point and the weight detection location point; S4134: Generate a detection distance ratio value based on the detection distance vector value, billet diameter value, and billet length value; S4135: Determine the reference scale value of ambient temperature based on the ambient temperature value; S4136: Determine the distance influence value by combining the detection distance ratio value and the ambient temperature baseline ratio value, and use the distance influence value as the environmental influence value.

[0013] By adopting the above technical solution, the billet contour location point, billet diameter value, and billet length value are determined according to the required processing specifications. The nearest contour location point is selected to calculate the detection distance vector value and generate the detection distance ratio value. The ambient temperature reference ratio value is determined by the ambient temperature value. In combination with the determined distance influence value, it is used as the environmental influence value. By combining the billet's own contour and size, the correlation between the distance from the detection point to the billet contour and the environmental influence is quantified. This allows the environmental influence value to match the actual environmental sensitivity of different detection positions, further improving the accuracy of the weight adjustment value and reducing the environmental influence correction deviation caused by differences in detection positions.

[0014] Optionally, methods for generating the detection distance ratio include: S41341: Retrieve distance direction information and detection distance value based on the detected distance vector value; S41342: Calculate the distance direction angle value based on the distance direction information and the preset length direction information; S41343: Determine the angle reference value based on the processing specifications required; S41344: Determine whether the distance direction angle value is less than the angle reference value; S41345: If yes, calculate the ratio between the billet length value and the detection distance value and use it as the detection distance ratio value; S41346: If not, calculate the ratio between the billet diameter value and the detection distance value and use it as the detection distance ratio value.

[0015] By adopting the above technical solution, distance direction information and detection distance value are retrieved and the distance direction angle value is calculated. The angle reference value is determined according to the required processing specifications. Then, by judging the relationship between the detection distance direction angle value and the angle reference value, the ratio is calculated by selecting the billet length value or billet diameter value and the detection distance value respectively. Thus, for the difference in the angle between the detection distance direction and the billet length direction, the corresponding billet size calculation ratio is used to make the detection distance ratio value more accurately reflect the relative position of the detection position in the billet structure, avoid the ratio deviation caused by single size calculation, and thus improve the calculation accuracy of environmental impact value, providing support for the accurate generation of the weight distribution center point.

[0016] Optionally, methods for generating the weight distribution map include: S4151: Determine the length end position point based on the blank contour position point selection; S4152: Determine the reference position point at the end of the range based on the adjacent weight detection position points; S4153: Determine the weight detection range based on the position point at the end of the length and the reference position point at the end of the range; S4154: Based on the weight detection range and weight adjustment value, a range weight histogram is generated, and the range weight histogram is used as a weight distribution map.

[0017] By adopting the above technical solution, the length end position point is determined by selecting the position point of the billet contour, and the weight detection range is determined by combining the weight detection position point. Then, the weight detection range and the weight adjustment value are used to form a range weight bar chart as a weight distribution chart. This allows the weight distribution status of different areas to be presented intuitively in the form of a bar chart, making the selection of the weight center position point more targeted and reducing the center judgment error caused by insufficient visualization of the weight distribution.

[0018] Optional methods for selecting the center of gravity location include: S4161: Determine the midpoint of the length based on the end point of the length; S4162: Select the weight detection range based on the midpoint of the length and use it as the intermediate selection range; S4163: Determine the average weight based on the weight adjustment value; S4164: Select the weight detection range based on the average weight and use it as the average selection range; S4165: Determine the range deviation distance vector value based on the average selected range and the intermediate selected range; S4166: Determine the range deviation adjustment vector value based on the range deviation distance vector value; S4167: Adjust the length midpoint based on the range deviation adjustment vector value to obtain the midpoint adjustment position, and use the midpoint adjustment position as the weight center position.

[0019] By adopting the above technical solution, the middle position point of the length is determined by the position point at the end of the length and the middle selection range is obtained. The average weight is determined by the weight adjustment value and the average selection range is obtained. Then, the range deviation distance vector value is calculated to determine the range deviation adjustment vector value. Finally, the middle adjustment position point is obtained and used as the weight center position point. This simultaneously takes into account the geometric center of the billet and the average state of the actual weight distribution. The geometric center is corrected by the range deviation adjustment vector value, avoiding the weight center offset caused by relying solely on the geometric center or the average weight. This makes the generated weight center position point more closely match the actual weight center of gravity of the hollow billet and improves the accuracy of subsequent center of gravity offset analysis.

[0020] Optionally, methods for generating offset selection vector values ​​include: S451: Determine whether the rotational deviation parameters meet the center of gravity offset reference parameters; S452: If yes, then the center of gravity offset vector value will be used as the offset selection vector value; S453: If not, then determine the abnormal deviation parameters based on the rotational deviation parameters and the center of gravity offset reference parameters; S454: Generate abnormal adjustment vector values ​​based on abnormal deviation parameters; S455: Combine the abnormal adjustment vector value and the center of gravity offset vector value to determine the abnormal comprehensive vector value, and use the abnormal comprehensive vector value as the offset selection vector value.

[0021] By adopting the above technical solution, the rotation deviation parameter is judged to meet the center of gravity offset reference parameter. The center of gravity offset vector value or abnormal comprehensive vector value is selected as the offset selection vector value according to the case. In normal cases, the center of gravity offset vector value is directly used to ensure the accuracy of the machining parameters. In abnormal cases, the abnormal adjustment vector value is used to correct the error. This avoids rotor weight defects caused by conventional vector machining when the rotation deviation parameter exceeds the standard, and improves the fault tolerance and stability of hollow screw rotor machining.

[0022] Optional methods for generating abnormal adjustment vector values ​​include: S4541: Retrieve the abnormal deviation values ​​of length, diameter, and phase angle based on the abnormal deviation parameters; S4542: Determine the length imbalance amount based on the abnormal length deviation value; S4543: Determine the diameter imbalance amount based on the abnormal diameter deviation value; S4544: Combine the length imbalance, diameter imbalance and phase angle abnormal deviation value to determine the abnormal deviation vector value, and use the abnormal deviation vector value as the abnormal adjustment vector value.

[0023] By adopting the above technical solution, abnormal deviation values ​​of length, diameter, and phase angle are retrieved through abnormal deviation parameters, and the unbalance of length and diameter is determined separately. Then, the abnormal deviation vector value is determined by combining the abnormal deviation value of phase angle and used as the abnormal adjustment vector value. Thus, through the linkage calculation of unbalance and phase angle, the adjustment direction and adjustment range corresponding to abnormal deviation are accurately quantified, so that the generated abnormal adjustment vector value can directly and specifically offset the abnormal deviation, avoiding inaccurate selection of vector value due to abnormal deviation, thereby ensuring the correction effect of hollow machining position point and machining parameters.

[0024] Secondly, the present invention provides a machining system for a hollow screw rotor structure, which adopts the following technical solution: A machining system for a hollow screw rotor structure includes: The data acquisition module is used to collect data on required processing specifications, weight detection information, rotation detection parameters, and ambient temperature values. The memory stores a program for implementing a machining method for a hollow screw rotor structure as described in any one of the first aspects; The processor loads and executes programs stored in memory.

[0025] In summary, the present invention has at least one of the following beneficial technical effects: 1. By first collecting the required processing specifications and weight detection information, then determining the rotation control parameters and collecting the rotation detection parameters based on the required processing specifications, and then combining the two to determine the rotation deviation parameters, and finally generating the hollow processing parameters and hollow processing position points based on the rotation deviation parameters, weight detection information and required processing specifications, and then carrying out processing, the problem of rotation deviation and uneven weight distribution of hollow blanks after deep hole processing is specifically eliminated, ensuring that the processed hollow screw rotor structure meets the required processing specifications, reducing the risk of subsequent centroid deviation from the rotation axis, and extending the service life of the screw rotor; 2. By generating the weight distribution center point through weight detection information and determining the center of gravity offset vector value in combination with the required processing specifications, the center of gravity offset adjustment position point and rotation deviation processing parameters are finally determined and used as the hollow processing position point and hollow processing parameters, respectively. This allows for direct and targeted correction of the center of gravity offset, improving the coincidence between the rotor's center of mass and the rotation axis. 3. By collecting ambient temperature values ​​and retrieving weight detection locations and values, environmental impact values ​​are generated through analysis to calculate weight adjustment values. A weight distribution map is then generated, and the weight center point is selected as the weight distribution center point. This fully considers the interference of ambient temperature on the weight detection results. The environmental impact values ​​are used to correct the weight detection values, making the generated weight adjustment values ​​more closely match the actual weight state of the hollow billet. Consequently, the obtained weight distribution map and weight distribution center point are more accurate, providing reliable basic data for subsequent center of gravity offset analysis and avoiding weight distribution judgment deviations caused by ambient temperature. Attached Figure Description

[0026] Figure 1 This is a flowchart of the machining method for a hollow screw rotor structure; Figure 2 This is a flowchart illustrating the method for generating hollow machining parameters and hollow machining location points. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] A method for machining a hollow screw rotor structure involves collecting required machining specifications and weight detection information, determining rotation control parameters based on these specifications, controlling the rotation of the hollow blank after deep hole machining to collect rotation detection parameters, calculating rotation deviation parameters by combining the two, and then generating hollow machining position points and hollow machining parameters by combining the rotation deviation parameters, weight detection information, and required machining specifications. The method also includes correcting the hollow machining position points by collecting ambient temperature data, and finally performing machining according to the hollow machining position points and parameters. This method specifically eliminates the problems of rotation deviation and uneven weight distribution of the hollow blank after deep hole machining, ensuring that the machined hollow screw rotor structure meets the required machining specifications, reducing the risk of subsequent centroid deviation from the rotation axis, and extending the service life of the screw rotor.

[0029] Reference Figure 1 This invention discloses a method for processing a hollow screw rotor structure, comprising: S1: Collect required processing specifications and weight inspection information.

[0030] The required processing specifications refer to the core technical parameters determined before processing the hollow screw rotor, based on the customer's usage scenario, equipment compatibility requirements, or design standards. These specifications include the diameter, length, helical tooth profile parameters, hollow channel dimensions, material type, and precision standards of the hollow blank. The required processing specifications are obtained through pre-input by the operator.

[0031] Weight detection information refers to the data obtained by weighing the hollow blank after deep hole machining. The weight detection information is obtained by measuring the weight of the hollow blank in sections using weighing equipment.

[0032] S2: Determine the rotation control parameters according to the required processing specifications, and control the rotation of the hollow blank after deep hole processing based on the rotation control parameters to collect rotation detection parameters.

[0033] Among them, rotation control parameters refer to the core control indicators that enable the hollow billet to rotate stably after deep hole machining and meet the subsequent testing requirements. Rotation control parameters include the target rotation speed of the billet, rotation duration, rotation direction and other parameters.

[0034] Rotation detection parameters refer to data reflecting the rotational state of a hollow billet when it rotates according to rotation control parameters. These parameters include the actual rotational speed, vibration amplitude along the length direction, vibration amplitude along the diameter direction, phase angle, and angular velocity.

[0035] The diameter and length of the hollow blank are retrieved according to the required processing specifications and input into the preset specification rotation database to obtain rotation control parameters. The rotation control parameters are then used to control the preset rotation device to clamp and drive the hollow blank after deep hole processing to rotate. At the same time, the rotation detection parameters are collected by the preset detection device for subsequent use.

[0036] The larger the diameter and length of the hollow billet, the greater the target speed and rotation duration in the rotation control parameters. The specification rotation database stores different diameters and lengths of hollow billets and their corresponding rotation control parameters in advance for pre-setting. The specification rotation database is obtained after the operator pre-inputs the parameters.

[0037] A rotating device is a piece of equipment used to control the rotation of a hollow billet. The rotating device includes a three-jaw chuck for clamping and a motor for driving the chuck to rotate. The rotating device is preset by the operator.

[0038] The detection device refers to a device used to detect rotational parameters. The detection device includes a photoelectric sensor for acquiring actual rotational speed values, a piezoelectric accelerometer for acquiring vibration amplitudes in the length and diameter directions, and a phase sensor for acquiring phase angle values. The detection device is preset by the operator.

[0039] S3: Determine the rotation deviation parameter by combining the rotation control parameter and the rotation detection parameter.

[0040] Among them, rotational deviation parameters are quantitative indicators reflecting the degree of deviation between the actual rotational state and the target state of the hollow billet. Rotational deviation parameters include rotational speed deviation, length direction deviation, diameter direction deviation, and phase deviation angle.

[0041] The target rotational speed is obtained by retrieving the rotational control parameters, and the actual rotational speed, length vibration amplitude, diameter vibration amplitude, and phase angle are retrieved by the rotational detection parameters. The difference between the target and actual rotational speeds is calculated as the rotational speed deviation. The difference between the length vibration amplitude and the preset length reference amplitude is calculated as the length deviation. The difference between the diameter vibration amplitude and the preset diameter reference amplitude is calculated as the diameter deviation. The difference between the phase angle and the preset phase reference angle is calculated as the phase deviation angle. Finally, the rotational speed deviation, length deviation, diameter deviation, and phase deviation angle are combined to form the rotational deviation parameter for convenient subsequent use.

[0042] The length-direction reference amplitude refers to the amplitude of the vibration reference displacement along its axial direction under normal conditions. The diameter-direction reference amplitude refers to the amplitude of the vibration reference displacement along its diameter under normal conditions. The phase reference angle value refers to the reference angle offset of the vibration signal relative to a fixed rotating reference point under normal conditions.

[0043] The reference amplitude in the length direction, the reference amplitude in the diameter direction, and the reference angle in the phase direction are all preset by the operator according to the requirements.

[0044] S4: Generate hollow machining parameters and hollow machining location points based on rotational deviation parameters, weight detection information, and required machining specifications.

[0045] Hollow machining parameters refer to the machining dimensional parameters corresponding to the adjustment of the hollow blank. Hollow machining position points refer to the position points corresponding to the adjustment of the hollow blank.

[0046] By analyzing rotational deviation parameters, weight detection information, and required processing specifications, hollow processing parameters and hollow processing location points are generated for convenient subsequent use.

[0047] To further ensure the rationality of the hollow machining parameters and hollow machining locations, it is necessary to perform further separate analysis and calculation on the hollow machining parameters and hollow machining locations, which will be explained in detail through the following steps.

[0048] Reference Figure 2 The method for generating hollow machining parameters and hollow machining location points includes the following steps: S41: Generate the center point of weight distribution based on weight detection information.

[0049] The center point of weight distribution refers to the coordinate point of the center of gravity that reflects the true weight distribution of the billet.

[0050] By analyzing the weight detection information, the center point of weight distribution is generated for convenient subsequent use.

[0051] To further ensure the rationality of the weight distribution center point, it is necessary to perform a further separate analysis and calculation on the weight distribution center point, which will be explained in detail through the steps shown below.

[0052] The method for generating the center point of weight distribution includes the following steps: S411: Collect ambient temperature value.

[0053] Among them, the ambient temperature value refers to the temperature value of the environment in which the hollow billet is located when it is rotated.

[0054] The ambient temperature value is obtained by detecting the preset temperature sensor.

[0055] S412: Retrieve weight detection location points and weight detection values ​​based on weight detection information.

[0056] The weight detection location points refer to the locations where the hollow billet is weighed in segments. The weight detection value refers to the weight value detected at each weight detection location point.

[0057] S413: Generate environmental impact value by combining weight detection location points and ambient temperature values.

[0058] Among them, the environmental impact value refers to the adjustment value made based on the influence of ambient temperature on the weight measurement value.

[0059] By analyzing the weight detection locations and ambient temperature values, environmental impact values ​​are generated for convenient subsequent use.

[0060] To further ensure the rationality of the environmental impact value, it is necessary to conduct a further separate analysis and calculation of the environmental impact value, which will be explained in detail through the steps shown below.

[0061] The method for generating environmental impact values ​​includes the following steps: S4131: Determine the blank outline location, blank diameter, and blank length based on the required processing specifications.

[0062] Here, the billet outline position point refers to the position point corresponding to the outline of the hollow billet. The billet diameter value refers to the diameter of the hollow billet. The billet length value refers to the length of the hollow billet.

[0063] The billet diameter and length values ​​are retrieved based on the required processing specifications, and the billet contour position points are determined according to the preset reference coordinate system for convenient subsequent use.

[0064] The reference coordinate system is preset by the operator. The reference coordinate system can be set with the clamping position as the origin, the clamping direction as the X-axis, the horizontal direction perpendicular to the clamping direction as the Y-axis, and the vertical direction as the Z-axis.

[0065] S4132: Select the nearest blank contour position point based on the weight detection position point and use it as the nearest contour position point.

[0066] The nearest contour location point refers to the billet contour location point that is closest to the weight detection location point.

[0067] The distance between the weight detection point and the billet contour point is calculated, and the billet contour point with the smallest distance is selected as the nearest contour point for convenient subsequent use.

[0068] S4133: The detection distance vector value is calculated based on the nearest contour location point and the weight detection location point.

[0069] The detection distance vector value refers to the vector distance parameter between the nearest contour location point and the weight detection location point.

[0070] The detection distance value is obtained by calculating the distance between the nearest contour position point and the weight detection position point. The weight detection position point is taken as the origin and the direction corresponding to the nearest contour position point is taken as the distance direction information. The detection distance value and the distance direction information are then combined to form the detection distance vector value for subsequent use.

[0071] S4134: Generates a detection distance ratio value based on the detection distance vector value, billet diameter value, and billet length value.

[0072] The detection distance ratio refers to the proportion of the distance from the weight detection location point to the nearest contour relative to the corresponding blank size (length or diameter).

[0073] By analyzing the detection distance vector value, billet diameter value, and billet length value, a detection distance ratio value is generated for convenient subsequent use.

[0074] To further ensure the rationality of the detection distance ratio, it is necessary to perform a further separate analysis and calculation of the detection distance ratio, which will be explained in detail through the steps shown below.

[0075] The method for generating the detection distance ratio includes the following steps: S41341: Retrieve distance direction information and detection distance value based on the detection distance vector value.

[0076] Specifically, the distance direction information and the detected distance value are retrieved by detecting the distance vector value, which facilitates subsequent use.

[0077] S41342: Calculate the distance direction angle value based on the distance direction information and the preset length direction information.

[0078] The length direction information refers to the direction information of the hollow blank being clamped, which is obtained after being pre-input by the operator. The distance direction angle value refers to the deviation angle between the distance direction information and the preset length direction information.

[0079] The deviation angle between the distance direction information and the preset length direction information is calculated, and the calculation result is used as the distance direction angle value for convenient subsequent use.

[0080] S41343: Determine the angle reference value based on the processing specifications required.

[0081] Among them, the angle reference value refers to the critical angle value used to distinguish the detection distance direction attribute.

[0082] By inputting the required processing specifications into a preset specification angle database, an angle reference value is obtained for easy subsequent use.

[0083] The greater the difference between the length and diameter in the required processing specifications, the smaller the angular reference value and the further away from 45 degrees. The specification angle database pre-stores a lookup table of different required processing specifications and their corresponding angular reference values, which is obtained after the operator pre-inputs the values.

[0084] For example, the required processing specifications can be set to a reference angle of 30 degrees when the length is 1000mm and the diameter is 50mm.

[0085] S41344: Determine whether the distance direction angle value is less than the angle reference value. If yes, execute S41345; if no, execute S41346.

[0086] Specifically, by judging whether the distance direction angle value is less than the angle reference value, it is determined whether the distance direction information is biased towards the length direction of the billet.

[0087] S41345: Calculate the ratio between the billet length value and the detection distance value and use it as the detection distance ratio value.

[0088] When the distance direction angle value is less than the angle reference value, it indicates that the distance direction information is biased towards the length direction of the billet. Therefore, the ratio between the billet length value and the detection distance value is calculated, and the calculation result is used as the detection distance ratio value to improve the accuracy of the obtained detection distance ratio value.

[0089] S41346: Calculate the ratio between the billet diameter value and the detection distance value and use it as the detection distance ratio value.

[0090] When the distance direction angle value is not less than the angle reference value, it indicates that the distance direction information is biased towards the billet diameter direction. Therefore, the ratio between the billet diameter value and the detection distance value is calculated, and the calculation result is used as the detection distance ratio value to improve the accuracy of the obtained detection distance ratio value.

[0091] S4135: Determine the ambient temperature reference ratio based on the ambient temperature value.

[0092] Among them, the ambient temperature reference ratio value refers to the maximum ratio value that will affect the weight measurement value under the ambient temperature value.

[0093] The product of the ambient temperature value and the preset temperature ratio coefficient is calculated, and the calculation result is used as the ambient temperature reference ratio value for convenient subsequent use.

[0094] The temperature proportionality coefficient is a coefficient used to convert ambient temperature values ​​into a proportional value of an ambient temperature reference. The temperature proportionality coefficient is preset by the operator according to actual needs.

[0095] S4136: Determine the distance influence value by combining the detection distance ratio value and the ambient temperature baseline ratio value, and use the distance influence value as the environmental influence value.

[0096] Among them, the distance influence value refers to the influence value corresponding to the effect of distance and temperature on the weight detection value.

[0097] The distance influence value is calculated by multiplying the detection distance ratio by a preset ratio influence coefficient. The result is then used as the distance influence value. Next, a comparison is made between the detection distance ratio and the ambient temperature baseline ratio. If the detection distance ratio is greater than the ambient temperature baseline ratio, the distance is not affected by temperature, and this distance influence value is directly used as the environmental influence value. If the detection distance ratio is not greater than the ambient temperature baseline ratio, the distance is affected by temperature. Therefore, the ambient temperature value is input into a preset temperature influence database to obtain a temperature influence value. The sum of the temperature influence value and the distance influence value is calculated, and the result is used to update the distance influence value. This updated distance influence value is then used as the environmental influence value, thereby improving the accuracy of the obtained environmental influence value.

[0098] The proportional influence coefficient is a coefficient used to convert the proportional value of the detection distance into a distance influence value. This coefficient is preset by the operator according to actual needs. The temperature influence database stores a table of different ambient temperature values ​​and their corresponding temperature influence values. The database detects the quality at different ambient temperature values ​​and compares the detected quality with the quality corresponding to normal temperatures to obtain the corresponding temperature influence value.

[0099] S414: Calculate the product between the environmental impact value and the weight measurement value and use it as the weight adjustment value.

[0100] The weight adjustment value refers to the weight value after adjusting the weight detection value.

[0101] The accuracy of the obtained weight adjustment value is improved by calculating the product between the environmental impact value and the weight measurement value and using the calculation result as the weight adjustment value.

[0102] S415: Generate a weight distribution map by combining the weight detection location points and weight adjustment values.

[0103] The weight distribution chart is a visual chart used to show the weight of the billet at different locations.

[0104] By combining and analyzing the weight detection locations and weight adjustment values, a weight distribution map is generated for convenient subsequent use.

[0105] To further ensure the validity of the weight distribution map, it is necessary to perform further separate analysis and calculations on the weight distribution map, which will be explained in detail through the steps shown below.

[0106] The method for generating a weight distribution map includes the following steps: S4151: Select and determine the length end position point based on the blank contour position point.

[0107] Among them, the length end position points refer to the position points at both ends along the length direction of the hollow blank.

[0108] By selecting the blank outline positions at both ends along the length of the hollow blank and using them as the length end positions, it is convenient to use them later.

[0109] S4152: Determine the reference position point at the end of the range based on the adjacent weight detection position points.

[0110] The reference position point at the end of the range refers to the midpoint between two adjacent weight detection positions.

[0111] By calculating the intermediate position between adjacent weight detection positions, a reference position at the end of the range is obtained, which is convenient for subsequent use.

[0112] S4153: Determine the weight detection range based on the position point at the end of the length and the reference position point at the end of the range.

[0113] The weight detection range refers to the area formed by the adjacent length end position point and the range end reference position point.

[0114] By sequentially determining the area corresponding to each range end reference point and the adjacent length end reference point or other range end reference points, the weight detection range is obtained, which facilitates subsequent use.

[0115] When the reference position at the end of the range is adjacent to the position at the end of the length, the weight detection range is the area between the reference position at the end of the range and the position at the end of the length.

[0116] When there is no reference point at the end of the range adjacent to the reference point at the end of the length, the weight detection range is the area between the reference point at the end of the range and other adjacent reference points at the end of the range.

[0117] S4154: Based on the weight detection range and weight adjustment value, a range weight histogram is generated, and the range weight histogram is used as a weight distribution map.

[0118] Among them, the range weight bar chart refers to a bar chart that visualizes the weight based on a range.

[0119] By using the weight detection range as the horizontal axis category and the weight adjustment value as the vertical axis height, a weight bar chart is obtained. The range weight bar chart is then used as a weight distribution chart, making it easier for operators to understand the weight distribution.

[0120] S416: Select the center point of weight based on the weight distribution map, and use the center point of weight as the center point of weight distribution.

[0121] The weight center point refers to the center point selected based on the weight distribution.

[0122] By analyzing the weight distribution map, the center point of weight is selected and used as the center point of weight distribution, thereby improving the accuracy of the obtained center point of weight distribution.

[0123] To further ensure the rationality of the weight center location, it is necessary to perform a further separate analysis and calculation on the weight center location, which will be explained in detail through the steps shown below.

[0124] The method for selecting the center of gravity location includes the following steps: S4161: Determine the midpoint of the length based on the end point of the length.

[0125] The midpoint of the length refers to the midpoint of the length of the hollow blank.

[0126] The calculation is performed on the midpoint between the two end points of the length, and the result is used as the midpoint of the length for convenient subsequent use.

[0127] S4162: Select the weight detection range based on the midpoint of the length and use it as the intermediate selection range.

[0128] The intermediate selection range refers to the weight detection range corresponding to the midpoint of the coverage length.

[0129] The weight detection ranges are matched by the midpoint of the length, and the weight detection range that the midpoint of the length falls into is used as the intermediate selection range for convenient subsequent use.

[0130] S4163: Determine the average weight based on the weight adjustment value.

[0131] The average weight refers to the average weight corresponding to each weight detection range.

[0132] The average value between each weight adjustment value is calculated, and the result is used as the average weight for convenient subsequent use.

[0133] S4164: Select the weight detection range based on the average weight and use it as the average selection range.

[0134] The average selection range refers to the weight detection range selected based on the average weight.

[0135] By calculating the average weight and each weight adjustment value, and using the calculation result as the weight deviation value, the weight deviation values ​​are sorted from smallest to largest. The weight detection range corresponding to the weight adjustment value of the first weight deviation value is used as the average selection range for subsequent use.

[0136] S4165: Determine the range deviation distance vector value based on the average selected range and the intermediate selected range.

[0137] Among them, the range deviation distance vector value refers to the deviation vector distance between the average selected range and the intermediate selected range.

[0138] By retrieving the nearest endpoints between the average selection range and the intermediate selection range, the distance between the two endpoints is calculated and used as the range deviation distance value. The endpoint of the intermediate selection range is taken as the origin and the direction pointing to the endpoint of the average selection range is taken as the range deviation direction information. The range deviation distance value and the range deviation direction information are then combined to obtain the range deviation distance vector value, which is convenient for subsequent use.

[0139] S4166: Determine the range deviation adjustment vector value based on the range deviation distance vector value.

[0140] Among them, the range deviation adjustment vector value refers to the adjustment vector value corresponding to the adjustment of the intermediate position point of the length based on the range deviation distance vector value.

[0141] The range deviation distance value is retrieved by the range deviation distance vector value, and the product value between the range deviation distance value and the preset range deviation adjustment coefficient is calculated. The calculation result is used as the range deviation adjustment value. The range deviation adjustment value is then combined with the range deviation direction information to obtain the range deviation adjustment vector value for subsequent use.

[0142] The range deviation adjustment coefficient is a coefficient used to convert the range deviation distance vector value into a range deviation adjustment value. The range deviation adjustment coefficient is obtained after being pre-input by the operator.

[0143] S4167: Adjust the length midpoint based on the range deviation adjustment vector value to obtain the midpoint adjustment position, and use the midpoint adjustment position as the weight center position.

[0144] The intermediate adjustment point refers to the position point corresponding to the intermediate position point of the length after adjustment.

[0145] By adjusting the vector value of the range deviation to adjust the midpoint of the length, the adjusted position is used as the intermediate adjustment position and the intermediate adjustment position is used as the weight center position, thereby improving the accuracy of the obtained weight center position.

[0146] S42: Determine the center of gravity location of the specifications based on the required processing specifications.

[0147] Among them, the center of gravity location point refers to the theoretical three-dimensional coordinate point of the center of gravity of the hollow billet under ideal conditions.

[0148] The diameter, length, hollow channel size, and material type of the hollow blank are retrieved based on the required processing specifications. The position of the center of gravity corresponding to the specified dimensions is calculated and used as the center of gravity position point for subsequent use.

[0149] The specific method for calculating the center of gravity of the specification is existing technology, so it will not be elaborated further.

[0150] S43: Determine the center of gravity offset vector value by combining the center point of weight distribution with the position of the center of gravity of the specification.

[0151] The center of gravity offset vector value refers to the deviation vector distance between the center point of weight distribution and the specified center of gravity location.

[0152] The distance between the center point of weight distribution and the center of gravity of the specification is calculated, and the calculation result is used as the center of gravity offset value. The center point of weight distribution is taken as the origin and the direction pointing to the center of gravity of the specification is taken as the center of gravity offset direction information. The center of gravity offset value and the center of gravity offset direction information are combined to obtain the center of gravity offset vector value, which is convenient for subsequent use.

[0153] S44: Determine the reference parameters for center of gravity offset based on the center of gravity offset vector value.

[0154] Among them, the center of gravity offset reference parameter refers to the quantitative index of the degree of reference deviation when the actual rotation state of the hollow billet deviates from the target state due to the center of gravity offset. The center of gravity offset reference parameter includes the rotational speed reference deviation value, the length direction reference deviation amount, the diameter direction reference deviation amount, and the phase reference deviation angle.

[0155] The center of gravity offset value and direction information are retrieved by the center of gravity offset vector value, and the center of gravity offset value and direction information are input into the preset center of gravity offset database to match and obtain the center of gravity offset reference parameters for subsequent use.

[0156] The center of gravity offset database pre-stores a lookup table of different center of gravity offset intervals and offset direction ranges, along with their corresponding speed reference deviation values, length reference deviations, diameter reference deviations, and phase reference deviation angles. The center of gravity offset interval is obtained by matching the center of gravity offset value, and the offset direction range is obtained by matching the center of gravity offset direction information. Then, the corresponding speed reference deviation values, length reference deviations, diameter reference deviations, and phase reference deviation angles for the matched center of gravity offset intervals and offset direction ranges are retrieved and weighted according to type to obtain a comprehensive set of speed reference deviation values, length reference deviations, diameter reference deviations, and phase reference deviation angles. These are then combined to obtain the center of gravity offset reference parameters. The center of gravity offset database is obtained after pre-input by the operator. The specific coefficients for the weighting calculation are pre-set by the operator according to actual needs. In this embodiment, the weights of the data corresponding to the center of gravity offset value and the center of gravity offset direction information are both 0.5.

[0157] S45: Generate offset selection vector value based on rotational deviation parameter, center of gravity offset reference parameter and center of gravity offset vector value.

[0158] The offset selection vector value refers to the adjustment vector distance corresponding to the position adjustment of the weight distribution center point based on the rotation deviation parameter.

[0159] By analyzing the rotational deviation parameters, the center of gravity offset reference parameters, and the center of gravity offset vector value, the offset selection vector value is generated for convenient subsequent use.

[0160] To further ensure the rationality of the offset selection vector value, it is necessary to perform further separate analysis and calculation on the offset selection vector value, which will be explained in detail through the steps shown below.

[0161] The method for generating offset selection vector values ​​includes the following steps: S451: Determine whether the rotational deviation parameter meets the center of gravity offset reference parameter. If yes, proceed to S452; if no, proceed to S453.

[0162] Specifically, the rotational deviation parameter retrieves the rotational speed deviation value, length deviation, diameter deviation, and phase deviation angle, while the center of gravity offset reference parameter retrieves the rotational speed reference deviation value, length deviation, diameter deviation, and phase deviation angle. The difference is then calculated sequentially, and it is determined whether the difference falls within the corresponding preset abnormal deviation tolerance range, thereby determining whether the center of gravity offset vector value can be used directly.

[0163] The permissible deviation range refers to the allowable range when there are abnormal deviations between the permissible speed deviation, length deviation, diameter deviation, and phase deviation angle and their corresponding reference values. The permissible deviation range includes the permissible deviation range corresponding to the speed deviation, length deviation, diameter deviation, and phase deviation angle. The permissible deviation range is preset by the operator according to actual needs.

[0164] S452: Use the center of gravity offset vector value as the offset selection vector value.

[0165] When the rotational deviation parameter meets the center of gravity offset reference parameter, it means that the center of gravity offset vector value can be used directly. Therefore, the center of gravity offset vector value is used as the offset selection vector value, thereby improving the accuracy of the obtained offset selection vector value.

[0166] S453: Determine the abnormal deviation parameters based on the rotational deviation parameters and the center of gravity offset reference parameters.

[0167] Among them, the abnormal deviation parameter refers to the abnormal value corresponding to the abnormal deviation in the rotational deviation parameter.

[0168] When the rotational deviation parameter does not meet the center of gravity offset reference parameter, it means that the center of gravity offset vector value cannot be used directly. Therefore, the rotational deviation parameter is used to retrieve the rotational speed deviation value, length deviation, diameter deviation, and phase deviation angle. The center of gravity offset reference parameter is used to retrieve the rotational speed reference deviation value, length reference deviation, diameter reference deviation, and phase reference deviation angle. The differences are then calculated sequentially to obtain the abnormal rotational speed deviation value, abnormal length deviation value, abnormal diameter deviation value, and abnormal phase angle deviation value. These are then combined to obtain the abnormal deviation parameter for subsequent use.

[0169] S454: Generate abnormal adjustment vector values ​​based on abnormal deviation parameters.

[0170] Among them, the abnormal adjustment vector value refers to the adjustment vector distance corresponding to the position adjustment of the center point of weight distribution based on the abnormal deviation parameter.

[0171] By analyzing abnormal deviation parameters, abnormal adjustment vector values ​​are generated for convenient subsequent use.

[0172] To further ensure the rationality of the abnormal adjustment vector values, it is necessary to perform further separate analysis and calculation on the abnormal adjustment vector values, which will be explained in detail through the steps shown below.

[0173] The method for generating abnormal adjustment vector values ​​includes the following steps: S4541: Retrieve the abnormal deviation values ​​of length, diameter, and phase angle based on the abnormal deviation parameters.

[0174] Among them, the abnormal deviation value of length refers to the deviation amount when there is an abnormality in the length direction. The abnormal deviation value of diameter refers to the deviation amount when there is an abnormality in the diameter direction. The abnormal deviation value of phase angle refers to the deviation amount when there is an abnormality in the phase angle.

[0175] The abnormal deviation parameters can be used to retrieve the abnormal deviation values ​​for length, diameter, and phase angle, which will facilitate subsequent use.

[0176] S4542: Determine the length imbalance based on the abnormal length deviation value.

[0177] Among them, the length imbalance refers to the quantitative value of the uneven mass distribution in the length direction caused by abnormal length deviation.

[0178] The angular velocity detection value is obtained by retrieving the rotation detection parameters, and the length imbalance is calculated by combining the angular velocity detection value with the abnormal length deviation value for subsequent use. The calculation process is based on existing technology, which involves combining the formulas for centrifugal force, vibration amplitude, and angular velocity, and will not be elaborated further.

[0179] S4543: Determine the diameter imbalance based on the abnormal diameter deviation value.

[0180] Among them, the diameter imbalance refers to the quantitative value of the uneven mass distribution in the diameter direction caused by abnormal diameter deviation.

[0181] The angular velocity detection value is retrieved by rotating the detection parameters, and the diameter imbalance is calculated by combining the angular velocity detection value with the abnormal diameter deviation value, which facilitates subsequent use.

[0182] S4544: Combine the length imbalance, diameter imbalance and phase angle abnormal deviation value to determine the abnormal deviation vector value, and use the abnormal deviation vector value as the abnormal adjustment vector value.

[0183] Among them, the abnormal deviation vector value refers to the vector value that is adjusted based on the abnormality of length, diameter, and phase angle.

[0184] The diameter of the hollow blank is obtained by retrieving the processing specifications. The deviation in two directions is synthesized by the length imbalance, diameter imbalance and the diameter of the hollow blank to obtain the abnormal comprehensive deviation. Then, the phase angle abnormal deviation value is queried from the preset phase angle abnormality database to obtain the deviation angle. The abnormal comprehensive deviation and the deviation angle are then combined to obtain the abnormal deviation vector value. The abnormal deviation vector value is used as the abnormal adjustment vector value to improve the accuracy of the obtained abnormal adjustment vector value.

[0185] The phase angle anomaly database has a pre-stored table of different phase angle anomaly deviation values ​​and their corresponding deviation angles. The phase angle anomaly database is obtained after the operator pre-inputs the values.

[0186] S455: Combine the abnormal adjustment vector value and the center of gravity offset vector value to determine the abnormal comprehensive vector value, and use the abnormal comprehensive vector value as the offset selection vector value.

[0187] Among them, the abnormal comprehensive vector value refers to the comprehensive vector value after adjusting the center of gravity offset vector value.

[0188] By performing vector summation on the abnormal adjustment vector value and the center of gravity offset vector value, a comprehensive vector value is obtained. This comprehensive abnormal vector value is then used as the offset selection vector value, thereby improving the accuracy of the obtained offset selection vector value.

[0189] S46: Combine the offset vector value with the weight distribution center point to determine the center of gravity offset adjustment position.

[0190] Among them, the center of gravity offset adjustment position point refers to the position point corresponding to the center point of weight distribution after adjustment.

[0191] By taking the center point of weight distribution as the origin and the offset vector value as the adjustment vector, the center of gravity offset adjustment position point is obtained, which is convenient for subsequent use.

[0192] S47: Determine the rotation deviation machining parameters based on the rotation deviation parameters, and use the rotation deviation machining parameters as the hollow machining parameters, and use the center of gravity offset adjustment position point as the hollow machining position point.

[0193] Among them, rotational deviation machining parameters refer to the dimensional parameters that need to be adjusted during machining.

[0194] By inputting the rotational deviation parameters into a preset rotational deviation machining database to obtain the rotational deviation machining parameters, and using the rotational deviation machining parameters as the hollow machining parameters, and using the center of gravity offset adjustment position point as the hollow machining position point, the accuracy of the obtained hollow machining parameters and hollow machining position points is improved.

[0195] The rotational deviation machining database has a pre-stored lookup table of different rotational deviation parameters and their corresponding rotational deviation machining parameters. The rotational deviation machining database is obtained after the operator pre-inputs the parameters.

[0196] S5: Process the hollow blank based on the hollow processing location and hollow processing parameters.

[0197] By inputting the hollow machining position point and hollow machining parameters into a preset machining device, and clamping the hollow blank in the machining device for machining, the problems of rotational deviation and uneven weight distribution of the hollow blank after deep hole machining are specifically eliminated. This ensures that the hollow screw rotor structure after machining meets the required machining specifications, reduces the risk of subsequent centroid deviation from the rotation axis, and extends the service life of the screw rotor.

[0198] The processing device refers to a drilling machine used to adjust and process deep holes in hollow blanks.

[0199] Based on the same inventive concept, embodiments of the present invention provide a machining system for a hollow screw rotor structure, comprising: The data acquisition module is used to collect data on required processing specifications, weight detection information, rotation detection parameters, and ambient temperature values. The memory stores a program for implementing a machining method for a hollow screw rotor structure as described above; The processor loads and executes programs stored in memory.

[0200] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0201] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for machining a hollow screw rotor structure, characterized in that, include: S1: Collect required processing specifications and weight inspection information; S2: Determine the rotation control parameters according to the required processing specifications, and control the rotation of the hollow blank after deep hole processing based on the rotation control parameters to collect rotation detection parameters; S3: Determine the rotation deviation parameter by combining the rotation control parameter and the rotation detection parameter; S4: Generate hollow machining parameters and hollow machining location points based on rotational deviation parameters, weight detection information, and required machining specifications; S5: Process the hollow blank based on the hollow processing location and hollow processing parameters.

2. The processing method of a hollow screw rotor structure according to claim 1, characterized in that, The methods for generating hollow machining parameters and hollow machining location points include: S41: Generate the weight distribution center point based on the weight detection information; S42: Determine the center of gravity of the specifications based on the required processing specifications; S43: Determine the center of gravity offset vector value by combining the weight distribution center point and the specification center of gravity location point; S44: Determine the reference parameters for center of gravity offset based on the center of gravity offset vector value; S45: Generate the offset selection vector value based on the rotational deviation parameter, the center of gravity offset reference parameter, and the center of gravity offset vector value; S46: Combine the offset vector value with the weight distribution center point to determine the center of gravity offset adjustment position; S47: Determine the rotation deviation machining parameters based on the rotation deviation parameters, and use the rotation deviation machining parameters as the hollow machining parameters, and use the center of gravity offset adjustment position point as the hollow machining position point.

3. The processing method of a hollow screw rotor structure according to claim 2, characterized in that, Methods for generating the center point of weight distribution include: S411: Collect ambient temperature value; S412: Retrieve weight detection location points and weight detection values ​​based on weight detection information; S413: Generate environmental impact values ​​by combining weight detection location points and ambient temperature values; S414: Calculate the product between the environmental impact value and the weight measurement value and use it as the weight adjustment value; S415: Generate a weight distribution map by combining weight detection location points and weight adjustment values; S416: Select the center point of weight based on the weight distribution map, and use the center point of weight as the center point of weight distribution.

4. The processing method of a hollow screw rotor structure according to claim 3, characterized in that, Methods for generating environmental impact values ​​include: S4131: Determine the blank outline location points, blank diameter value, and blank length value based on the required processing specifications; S4132: Select the nearest blank contour position point based on the weight detection position point and use it as the nearest contour position point; S4133: The detection distance vector value is calculated based on the nearest contour location point and the weight detection location point; S4134: Generate a detection distance ratio value based on the detection distance vector value, billet diameter value, and billet length value; S4135: Determine the reference scale value of ambient temperature based on the ambient temperature value; S4136: Determine the distance influence value by combining the detection distance ratio value and the ambient temperature baseline ratio value, and use the distance influence value as the environmental influence value.

5. The processing method of a hollow screw rotor structure according to claim 4, characterized in that, Methods for generating detection distance ratio values ​​include: S41341: Retrieve distance direction information and detection distance value based on the detected distance vector value; S41342: Calculate the distance direction angle value based on the distance direction information and the preset length direction information; S41343: Determine the angle reference value based on the processing specifications required; S41344: Determine whether the distance direction angle value is less than the angle reference value; S41345: If yes, calculate the ratio between the billet length value and the detection distance value and use it as the detection distance ratio value; S41346: If not, calculate the ratio between the billet diameter value and the detection distance value and use it as the detection distance ratio value.

6. The processing method of a hollow screw rotor structure according to claim 4, characterized in that, Methods for generating weight distribution maps include: S4151: Determine the length end position point based on the blank contour position point selection; S4152: Determine the reference position point at the end of the range based on the adjacent weight detection position points; S4153: Determine the weight detection range based on the position point at the end of the length and the reference position point at the end of the range; S4154: Based on the weight detection range and weight adjustment value, a range weight histogram is generated, and the range weight histogram is used as a weight distribution map.

7. The method for processing a hollow screw rotor structure according to claim 6, characterized in that, Methods for selecting the center of gravity include: S4161: Determine the midpoint of the length based on the end point of the length; S4162: Select the weight detection range based on the midpoint of the length and use it as the intermediate selection range; S4163: Determine the average weight based on the weight adjustment value; S4164: Select the weight detection range based on the average weight and use it as the average selection range; S4165: Determine the range deviation distance vector value based on the average selected range and the intermediate selected range; S4166: Determine the range deviation adjustment vector value based on the range deviation distance vector value; S4167: Adjust the length midpoint based on the range deviation adjustment vector value to obtain the midpoint adjustment position, and use the midpoint adjustment position as the weight center position.

8. The processing method of a hollow screw rotor structure according to claim 2, characterized in that, Methods for generating offset selection vector values ​​include: S451: Determine whether the rotational deviation parameters meet the center of gravity offset reference parameters; S452: If yes, then the center of gravity offset vector value will be used as the offset selection vector value; S453: If not, then determine the abnormal deviation parameters based on the rotational deviation parameters and the center of gravity offset reference parameters; S454: Generate abnormal adjustment vector values ​​based on abnormal deviation parameters; S455: Combine the abnormal adjustment vector value and the center of gravity offset vector value to determine the abnormal comprehensive vector value, and use the abnormal comprehensive vector value as the offset selection vector value.

9. A method for processing a hollow screw rotor structure according to claim 8, characterized in that, Methods for generating abnormal adjustment vector values ​​include: S4541: Retrieve the abnormal deviation values ​​of length, diameter, and phase angle based on the abnormal deviation parameters; S4542: Determine the length imbalance amount based on the abnormal length deviation value; S4543: Determine the diameter imbalance amount based on the abnormal diameter deviation value; S4544: Combine the length imbalance, diameter imbalance and phase angle abnormal deviation value to determine the abnormal deviation vector value, and use the abnormal deviation vector value as the abnormal adjustment vector value.

10. A machining system for a hollow screw rotor structure, characterized in that, include: The data acquisition module is used to collect data on required processing specifications, weight detection information, rotation detection parameters, and ambient temperature values. The memory stores a program for implementing a machining method for a hollow screw rotor structure as described in any one of claims 1 to 9; The processor loads and executes programs stored in memory.

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