An oil press die - closing and forming positioning machine and its calibration method

Abstract

The present invention provides a die - closing and forming positioning machine for a hydraulic press and its calibration method, which relates to the technical field of die - closing and forming machines for hydraulic presses. The die - closing and forming positioning machine for a hydraulic press includes a base. On one side of the upper end surface of the base, a processing and control end is fixedly arranged. On the other side of the upper end surface of the base, a fixed seat is fixedly arranged. On the upper end surface of the processing and control end, a control panel is fixedly arranged. On both sides of the upper end surface of the fixed seat, support rods are fixedly arranged. By converting the positional relationship of the internal planes of the target hollow parts, which are abstract and invisible before processing, into specific visible image data, and generating through coding conversion and mimic models, and calibrating according to the deviation between the standard working deformation amount and the deformation of the deformation block during the detection work, the die - closing force of the upper and lower dies is calibrated, the die - closing and forming deviation is corrected. Through the measurement and calibration of the die - closing force, the calibration of the internal planes of the target hollow parts is realized, and the processing accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic press die - closing molding machines, and particularly to a hydraulic press die - closing molding positioning machine and its calibration method. Background Technique

[0002] A hydraulic press is one of many types of hydraulic machines. The hydraulic press mainly uses special hydraulic oil as the working medium, takes a hydraulic pump as the power source, and relies on the force of the pump to make the hydraulic oil enter the oil cylinder through the hydraulic pipeline. Then, through a one - way valve, the hydraulic oil circulates inside the fuel tank, so that the oil cylinder can perform cyclic work to complete the established mechanical actions. At the present stage, the stretching hydraulic press has replaced the mechanical punching machine and is widely used in the field of metal material stretching. Currently, the general structure of a press is that the stretching hydraulic cylinder is placed on the upper part, that is, the hydraulic cylinder is located at the upper position of the hydraulic press, while the lower die is fixedly arranged at the lower position of the hydraulic press, and the upper die is driven by the hydraulic cylinder to press down and fit the lower die to complete the die - closing process.

[0003] However, in the case of traditional die - closing control through torque limitation or a die with a built - in spring, the flexibility and reliability are relatively poor, and it is difficult to perform precise adjustment due to the reduced sensitivity in small - sized dies. Not only is the adjustment accuracy and general usability poor, but also matching adjustment needs to be carried out for each die. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a hydraulic press die - closing molding positioning machine and its calibration method, which solve the problems that in the case of traditional die - closing control through torque limitation or a die with a built - in spring, the flexibility and reliability are relatively poor, and it is difficult to perform precise adjustment due to the reduced sensitivity in small - sized dies, and the adjustment accuracy and general usability are poor.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A hydraulic press die - closing molding positioning machine includes a base. On one side of the upper end surface of the base, a processing control end is fixedly arranged. On the other side of the upper end surface of the base, a fixed seat is fixedly arranged. On the upper end surface of the processing control end, a control panel is fixedly arranged. On both sides of the upper end surface of the fixed seat, support rods are fixedly arranged. At the mid - point of the upper end surface of the fixed seat, a lower die is fixedly arranged. On the upper end surfaces of the two support rods, a top plate is fixedly arranged.

[0008] An electric slide rail is provided on the lower end surface of the top plate and the upper end surface of the fixed seat, and a tomographic scanning mechanism is slidably clamped in the slide rail. A mold cavity is opened at the midpoint of the upper end surface of the lower mold, and deformation blocks are embedded in the upper end surface of the lower mold on both sides of the mold cavity. Guide rods are fixedly provided on the upper end surfaces of the two deformation blocks, and a fixing plate is fixedly provided on the upper end surfaces of the two guide rods. A hydraulic press is fixedly provided at the midpoint of the upper end surface of the fixing plate, and an upper mold is fixedly provided at the output end of the hydraulic press. A mold pressing block is fixedly provided on the lower end surface of the upper mold.

[0009] Preferably, the processing control end includes a data input module, a storage unit, a data interaction unit, a data output module, and a mimicry synchronization unit.

[0010] Preferably, the tomographic scanning mechanism includes a connecting rod and two opposite tomographic scanning devices.

[0011] Preferably, the data interaction unit includes a monitoring and processing center, the monitoring and processing center is connected with a control key, a mimicry data storage unit, an image acquisition and processing unit, and an image data comparison unit. The image acquisition and processing unit is electrically connected with a detection and sensing unit and is electrically connected with the mimicry synchronization unit. The image data comparison unit is electrically connected with the mimicry synchronization unit and is electrically connected with a calibration module.

[0012] Preferably, the mimicry synchronization unit includes a mimicry synchronization model, a target tracking unit, a target model synchronization, and a regional model synchronization. Among them, the mimicry synchronization unit establishes a mimicry model based on the data obtained by the image acquisition and processing unit through the detection and sensing unit.

[0013] Preferably, the detection and sensing unit includes a real-time tracking unit, a project fixed-point tracking, a positioning sensing unit, and a regional positioning module. Among them, the real-time tracking unit includes the deformation amount tracking of the deformation block, and the project fixed-point tracking is based on the compression point to track the compression predetermined point.

[0014] A calibration method for a hydraulic press die-closing and forming positioning machine specifically includes the following steps:

[0015] S1. Original data acquisition

[0016] Obtain the original die-closing and forming machine morphology data;

[0017] S2. Original data encoding

[0018] Perform encoding conversion on the obtained original data;

[0019] S3. In-mold data acquisition and encoding

[0020] Obtain and take the best die-closing data for encoding conversion;

[0021] S4. Data imaging model

[0022] Establish the original mimic model and the optimal model, and preset the range threshold of the optimal mimic model;

[0023] S5. Fixing points and calibration processing of the imaging model

[0024] Extract data through tomography to establish a comparison and calibration between the mimic model and the optimal model, and perform calibration and adjustment;

[0025] S6. Calibration and forming module

[0026] Complete the calibration comparison according to the preset range threshold.

[0027] (III) Beneficial effects

[0028] The present invention provides a die closing and forming positioning machine for a hydraulic press and its calibration method. It has the following beneficial effects:

[0029] 1. The present invention provides a die closing and forming positioning machine for a hydraulic press and its calibration method. By using a tomography mechanism to perform tomography, the positional relationship of the internal planes of the target hollow parts that are abstract and invisible before processing is converted into specific visible image data. Through encoding conversion and mimic model generation, during die closing and forming, the deformation of the deformation block during high-pressure die closing accompanied by the die closing process can be used as a variable, and the deformation amount of the normal deformation block during high-pressure die closing is preset as a standard value. Detect the deformation of the deformation block during high-pressure die closing accompanied by the die closing process during production, and correct it according to the deviation between the standard working deformation amount and the deformation of the deformation block during the detected work, thereby completing the calibration of the die closing force of the upper and lower dies, correcting the die closing and forming deviation. Through the measurement and calibration of the die closing force, the calibration of the internal planes of the target hollow parts is realized, and the processing accuracy is improved. Description of the drawings

[0030] Figure 1 It is a schematic structural diagram of the device of the present invention;

[0031] Figure 2 It is a structural framework diagram of the processing system of the present invention;

[0032] Figure 3 It is a system framework diagram of the present invention;

[0033] Figure 4 It is a framework diagram of the mimic synchronization unit of the present invention;

[0034] Figure 5 It is a framework diagram of the detection and sensing unit of the present invention;

[0035] Figure 6 It is a method flow framework diagram of the present invention.

[0036] Among them, 1. Control panel; 2. Processing control end; 201. Data input module; 202. Storage unit; 203. Data interaction unit; 20301. Monitoring and processing center; 20302. Control key; 20303. Mimic data storage unit; 20304. Calibration module; 20305. Image data comparison unit; 20306. Image acquisition and processing unit; 204. Data output module; 205. Mimic synchronization unit; 20501. Mimic synchronization model; 20502. Target tracking unit; 20503. Target model synchronization; 20504. Area model synchronization; 3. Base; 4. Support rod; 5. Tomography mechanism; 6. Hydraulic press; 7. Fixed plate; 8. Top plate; 9. Guide rod; 10. Upper mold; 11. Molding block; 12. Deformation block; 13. Lower mold; 14. Fixed seat; 15. Detection and sensing unit; 1501. Real-time tracking unit; 1502. Project fixed-point tracking; 1503. Positioning sensing unit; 1504. Area positioning module. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment:

[0039] As Figure 1-6 shown, the embodiment of the present invention provides a hydraulic press die-closing and forming positioning machine, including a base 3. One side of the upper end surface of the base 3 is fixedly provided with a processing control end 2, and the other side of the upper end surface of the base 3 is fixedly provided with a fixed seat 14. The upper end surface of the processing control end 2 is fixedly provided with a control panel 1. Both sides of the upper end surface of the fixed seat 14 are fixedly provided with support rods 4, and the midpoint of the upper end surface of the fixed seat 14 is fixedly provided with a lower mold 13. The upper end surfaces of the two support rods 4 are fixedly provided with a top plate 8;

[0040] Both the lower end surface of the top plate 8 and the upper end surface of the fixed seat 14 are provided with electric sliding rails, and a tomography mechanism 5 is slidably clamped in the sliding rails. A mold cavity is opened at the midpoint of the upper end surface of the lower mold 13, and deformation blocks 12 are embedded on both sides of the mold cavity on the upper end surface of the lower mold 13. Guide rods 9 are fixedly provided on the upper end surfaces of the two deformation blocks 12, and a fixed plate 7 is fixedly provided on the upper end surfaces of the two guide rods 9. A hydraulic press 6 is fixedly provided at the midpoint of the upper end surface of the fixed plate 7, and an upper mold 10 is fixedly provided at the output end of the hydraulic press 6. A molding block 11 is fixedly provided on the lower end surface of the upper mold 10.

[0041] During use, first install each component and keep the device running normally. Use the hydraulic press 6 to drive the upper mold 10 downward, and embed the molding block 11 into the mold cavity of the lower mold 13. At the same time, the upper mold 10 fits on the top surface of the lower mold 13 to complete the mold closing operation. When the upper mold 10 moves downward and fits, the deformation block 12 undergoes a contraction deformation under pressure. Finally, after the mold closing operation is completed, the hydraulic press 6 drives the upper mold 10 to move upward and reset. The tomography mechanism 5 includes a connecting rod 501 and two opposite tomography devices 502. The tomography mechanism 5 uses positron emission computed tomography technology for tomography and fluoroscopy.

[0042] The processing control terminal 2 includes a data input module 201, a storage unit 202, a data interaction unit 203, a data output module 204, and a mimicry synchronization unit 205. The data interaction unit 203 includes a monitoring and processing center 20301. The monitoring and processing center 20301 is connected to a control key 20302, a mimicry data storage unit 20303, an image acquisition and processing unit 20306, and an image data comparison unit 20305. The image acquisition and processing unit 20306 is electrically connected to the detection and sensing unit 15 and is also electrically connected to the mimicry synchronization unit 205. The image data comparison unit 20305 is electrically connected to the mimicry synchronization unit 205 and is also electrically connected to a correction module 20304. The image acquisition and processing unit 20306 acquires the scene data of the mold closing area according to the tomography mechanism 5 connected to the detection and sensing unit 15, and converts and transmits the collected data to the mimicry synchronization unit 205 for mimicry generation. The mimicry synchronization unit 205 synchronously simulates the data changes of the upper mold 10, the molding block 11, the lower mold 13, and the deformation block 12 during the mold closing process to complete intelligent monitoring. Finally, the correction module 20304 compares and corrects the original mold and the actual mold for use in correcting each key point.

[0043] The mimicry synchronization unit 205 includes a mimicry synchronization model 20501, a target tracking unit 20502, a target model synchronization 20503, and a regional model synchronization 20504. Among them, the mimicry synchronization unit 205 establishes a mimicry model based on the data obtained by the image acquisition and processing unit 20306 through the detection and sensing unit 15. The detection and sensing unit 15 includes a real-time tracking unit 1501, an item fixed-point tracking 1502, a positioning sensing unit 1503, and a regional positioning module 1504. Among them, the real-time tracking unit 1501 includes the tracking of the deformation amount of the deformation block 12, and the item fixed-point tracking 1502 performs compression predetermined point tracking based on the compression point. The item fixed-point tracking 1502 is used to track the mold closing completion point to determine the accurate statistics of the mold closing point, while the positioning sensing unit 1503 uses cross-sectional height change positioning based on tomographic scanning and synchronizes the positioning point in the mimicry scenario. At the same time, the regional positioning module 1504 performs mold closing area point positioning and global azimuth fixed-pointing on the mold closing area scenario, completes the synchronization and association of mimicry and real-world data, and ensures the real-time, intelligent, and complete recording of the data.

[0044] A calibration method for a mold closing and forming positioning machine of a hydraulic press specifically includes the following steps:

[0045] S1. Original data acquisition

[0046] Obtain the upper mold 10, the lower mold 13, and the mold closing form data of both in the original mold closing and forming machine, and also include the normal form data of the mold cavity of the lower mold 13 and the deformation blocks 12 on both sides;

[0047] S2. Original data encoding

[0048] Perform encoding conversion on the obtained original data and replace it with the data form required by the mimicry model;

[0049] S3. In-mold data acquisition and encoding

[0050] Through multiple complete positioning and forming, determine the changes of each original data during forming, obtain the best data, and perform encoding conversion to replace it with the data form required by the mimicry model;

[0051] S4. Data imaging model

[0052] Based on the original transcoded data and the best data transcoding information, establish the original mimicry model and the best model, and preset the range threshold of the best mimicry model;

[0053] S5. Imaging model fixed-pointing and calibration processing

[0054] Perform tomographic scanning on the forming state of the mold closing and forming machine through the tomographic scanning mechanism 5, extract the data during forming to establish a comparison and calibration between the mimicry model and the best model, and perform calibration adjustment of the force application magnitude by the control end;

[0055] S6. Calibration Molding Module

[0056] Form a comparison between the final calibration data mimic model and the optimal mimic model, and complete the calibration comparison according to the predetermined range threshold.

[0057] By using a tomographic scanning mechanism to perform tomographic scanning, the positional relationship of the built-in plane of the target hollow part, which is abstract and invisible before processing, is converted into specific visible image data. With the use of coding conversion and mimic model generation, during mold clamping and forming, the deformation of the deformation block 12 during the high-pressure mold clamping process accompanied by the mold clamping process can be used as the variable. The deformation amount of the normal deformation block 12 accompanied by high-pressure mold clamping is preset as the standard value. The deformation of the deformation block 12 during the high-pressure mold clamping process accompanied by the mold clamping process during production is detected, and the mold clamping force of the upper and lower molds is corrected according to the deviation between the standard working deformation amount and the deformation of the deformation block 12 during the detected work, thereby correcting the mold clamping and forming deviation. Through the measurement and correction of the mold clamping force, the calibration of the built-in plane of the target hollow part is achieved, and the processing accuracy is improved.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil press die - closing and forming positioning machine, comprising a base (3), characterized in that: On one side of the upper end face of the base (3), a processing control end (2) is fixedly arranged, on the other side of the upper end face of the base (3), a fixing seat (14) is fixedly arranged, on the upper end face of the processing control end (2), a control panel (1) is fixedly arranged, on both sides of the upper end face of the fixing seat (14), support rods (4) are fixedly arranged, and at the midpoint of the upper end face of the fixing seat (14), a lower mold (13) is fixedly arranged; on the upper end faces of the two support rods (4), a top plate (8) is fixedly arranged; On the lower end face of the top plate (8) and the upper end face of the fixing seat (14), electric slide rails are arranged, and a tomographic scanning mechanism (5) is slidably clamped in the slide rails. At the midpoint of the upper end face of the lower mold (13), a mold cavity is opened, and on both sides of the mold cavity on the upper end face of the lower mold (13), deformation blocks (12) are embedded. On the upper end faces of the two deformation blocks (12), guide rods (9) are fixedly arranged. On the upper end faces of the two guide rods (9), a fixing plate (7) is fixedly arranged. At the midpoint of the upper end face of the fixing plate (7), a hydraulic press (6) is fixedly arranged, and at the output end of the hydraulic press (6), an upper mold (10) is fixedly arranged. On the lower end face of the upper mold (10), a mold pressing block (11) is fixedly arranged; The processing control end (2) includes a data input module (201), a storage unit (202), a data interaction unit (203), a data output module (204), and a mimicry synchronization unit (205). The data interaction unit (203) includes a monitoring and processing center (20301). The monitoring and processing center (20301) is connected to a control key (20302), a mimicry data storage unit (20303), an image acquisition and processing unit (20306), and an image data comparison unit (20305). The image acquisition and processing unit (20306) is electrically connected to a detection and sensing unit (15) and is electrically connected to the mimicry synchronization unit (205). The image data comparison unit (20305) is electrically connected to the mimicry synchronization unit (205) and is electrically connected to a calibration module (20304). The detection and sensing unit (15) includes a real-time tracking unit (1501), a project fixed-point tracking (1502), a positioning sensing unit (1503), and a regional positioning module (1504). Among them, the real-time tracking unit (1501) includes the tracking of the deformation amount of the deformation block (12), and the project fixed-point tracking (1502) performs compression predetermined point tracking based on the compression point.

2. The die closing and forming positioning machine of a hydraulic press according to claim 1, wherein: The tomographic scanning mechanism (5) includes a connecting rod (501) and two opposite tomographic scanning devices (502).

3. A die - closing and forming positioning machine for a hydraulic press according to claim 1, characterized in that: The mimicry synchronization unit (205) includes a mimicry synchronization model (20501), a target tracking unit (20502), a target model synchronization (20503), and a regional model synchronization (20504). Among them, the mimicry synchronization unit (205) establishes a mimicry model based on the data obtained by the image acquisition and processing unit (20306) through the detection and sensing unit (15).

4. A calibration method for the die - closing and forming positioning machine of the hydraulic press as described in claim 1, characterized in that, Specifically, it includes the following steps: S1. Original data acquisition Obtain the original mold closing molding machine form data; S2. Original data encoding Perform encoding conversion on the acquired original data; S3. Data acquisition and encoding in the S3 type Acquire and select the best mold closing data for encoding conversion; S4. Data imaging model Establish the original mimic model and the best model, and predetermine the range threshold of the best mimic model; S5. Fixed-point and calibration processing of the imaging model Extract data through tomography to establish a comparison and calibration between the mimic model and the best model, and perform calibration and adjustment; S6. Calibration and forming module Complete the calibration comparison according to the predetermined range threshold.

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