Stamping part forming method

Abstract

The invention relates to the technical field of manufacturing processes, and discloses a stamping part forming method which comprises the following steps: step 1, designing and preparing a die according to a required forming shape and size, mounting the designed or prepared die in a working area of a press machine, adjusting the position and gap of the die according to requirements to ensure that the die is stable, and forming the die; 2, a to-be-processed material is pretreated, firstly, the surface of the material is cleaned, so that the surface of the material is free of dirt and grease, then the material is heated, the heated material is subjected to heat treatment, a lubricating agent is sprayed into the mold in the step 1, meanwhile, the surface of the material is modified, and the thickness of the material is corrected. By continuously monitoring the deformation condition and stress distribution of the to-be-machined material in the stamping process and recording the monitored data, the impact force and the impact place can be adjusted in the stamping process, so that the process is optimized, and the overall quality of a stamping part is improved.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing process, in particular to a stamping part forming method. Background Art

[0002] Stamping is a metal processing method based on the plastic deformation of metal. It uses molds and stamping equipment to apply pressure to the sheet material to cause plastic deformation or separation of the sheet material, thereby obtaining parts with certain shapes, sizes and performance. Stamping technology occupies an important position in the automobile body manufacturing process, especially the large-scale covering parts of the automobile body. Most of them have complex shapes, large structural dimensions, some are spatial curved surfaces, and high surface quality requirements. Therefore, the use of stamping processing methods to make these parts is incomparable to other processing methods. The cab of a heavy-duty truck, the front sheet metal, the cargo board, various body covering parts of a car, and various frames of a bus are almost all made by stamping processing methods.

[0003] The stamping parts forming method in the prior art generally directly performs stamping forming after placing the stamping parts in the mold. During the forming process, the data of the stamping process is rarely monitored and collected, so the impact force and impact location cannot be adjusted according to the deformation and stress distribution of the stamping parts during stamping, thereby reducing the overall quality of the stamping parts. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a stamping parts forming method, which solves the problem that data in the stamping process is rarely monitored and collected during the stamping parts forming process, resulting in the inability to adjust the impact force and impact location during the stamping process, thereby reducing the overall quality of the stamping parts.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A stamping part forming method comprises the following steps:

[0006] Step 1: Design and prepare the mold according to the required molding shape and size, install the designed or prepared mold in the working area of ​​the press, and adjust the position and gap of the mold as required to ensure the stability of the mold:

[0007] Step 2: Pre-treat the material to be processed. First, clean the surface of the material to make it free of dirt and grease. Then heat the material. Then, heat-treat the heated material. In step 1, spray lubricant inside the mold, modify the surface of the material, and calibrate the thickness of the material.

[0008] Step 3: Place the material pre-processed in step 1 inside the mold, and place the material to be processed on the mold and fix it to ensure that it will not deviate when the impact force is applied;

[0009] Step 4: According to the properties of the material to be processed and the requirements of the forming shape, set appropriate press parameters, start the press according to the operating sequence of the press, and begin to apply impact force. During the stamping process, continuously monitor the deformation and stress distribution of the material to be processed, the working state of the mold and the operation of the press, and record the data during the forming process;

[0010] Step 5: After recording the data in step 4, the shape change and stress distribution of the stamping parts are predicted using numerical simulation methods, so that the process can be optimized before the stamping parts are formed according to the shape change and stress distribution;

[0011] Step 6: After the stamping parts in step 5 are optimized, they can be formed. At this time, a robotic arm, conveyor belt or other equipment is used to take out the formed stamping parts, and quality inspection is carried out. The molded parts after quality inspection are then classified and placed.

[0012] Preferably, the mold in step one can be designed or prepared in plurality to complete the forming of stamping parts of different shapes. After the position and gap of the mold in step one are adjusted, it is necessary to ensure that the mold is firmly installed.

[0013] Preferably, when cleaning the surface of the material in step 2, a solvent or a detergent can be used for cleaning, and the heating treatment in step 2 can be performed by heat conduction or electric heating.

[0014] Preferably, when heat treating the material in step 2, the workpiece to be processed is first heated to an appropriate temperature according to the material and maintained for a certain period of time, and then slowly cooled.

[0015] Preferably, the material can be modified in step 2 by chemical treatment or anodizing treatment.

[0016] Preferably, the press parameters in step 4 are pressure, stroke, speed, dwell time, number of cycles and temperature, and a cooling device is used to cool the stamped parts during the stamping process in step 4.

[0017] Preferably, when stamping in step 4, an initial impact is performed first, and then refinement and adjustment are performed. The stamping in step 4 can be performed through the cooperation of a hydraulic system and a mechanical system.

[0018] Preferably, when recording data in step five, real-time data can be acquired through sensors, monitoring equipment and imaging technology.

[0019] Preferably, automated equipment and systems are used during stamping in step 4, and the magnitude of the impact force in step 4 is determined according to the properties of the material and the shape to be formed.

[0020] Preferably, in step six, after the completed stamping parts are taken out, surface treatment, trimming and cleaning processes are required.

[0021] The present invention provides a stamping part forming method, which has the following beneficial effects:

[0022] 1. The present invention continuously monitors the deformation and stress distribution of the material to be processed during the stamping process and records the monitored data, and then uses numerical simulation methods to predict the shape change and stress distribution of the stamped parts, so that the impact force and impact location can be adjusted during the stamping process, thereby optimizing the process and improving the overall quality of the stamped parts.

[0023] 2. The present invention uses an automated system in conjunction with automated devices during the stamping process, thereby reducing manual involvement, saving time and effort, improving production efficiency, and avoiding manual intervention to maintain product consistency. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Example:

[0026] An embodiment of the present invention provides a stamping part forming method, comprising the following steps:

[0027] Step 1: Design and prepare the mold according to the required molding shape and size, install the designed or prepared mold in the working area of ​​the press, and adjust the position and gap of the mold as required to ensure the stability of the mold:

[0028] In order to complete the forming of stamping parts of different shapes, multiple dies are used for operation. Each die corresponds to a specific shape. According to the requirements of the stamping parts, the position and gap of the dies are adjusted to ensure that the material can be formed into the predetermined shape and size when the impact force is applied;

[0029] Step 2: Pre-treat the material to be processed. First, clean the surface of the material to make it free of dirt and grease. Then heat the material. Then, heat-treat the heated material. In step 1, spray lubricant inside the mold, modify the surface of the material, and calibrate the thickness of the material.

[0030] Before the impact force is applied, the material to be processed is pre-treated to increase its plasticity and deformability. This can include cleaning, heating, heat treatment, spraying lubricants and correcting the thickness of the material. Cleaning is to ensure that the surface of the material to be processed is clean and prevent impurities from affecting the quality of the stamped parts. By heating some specific materials to improve their plasticity, it is convenient to not make the stamped parts difficult to stamp due to low plasticity during stamping, and low plasticity is easy to cause damage to the stamped parts during stamping. Heat treatment of the material can refine its grains and reduce internal stress. Before applying impact force, spray appropriate lubricants between the material to be processed and the mold to reduce friction and wear, protect the mold, and promote the fluidity of the material. The surface of the material to be processed is modified, such as chemical treatment, anodizing, etc., to improve its surface properties and corrosion resistance, so as to improve the quality of the workpiece, and also keep the quality of the stamped parts from being damaged during stamping. If the initial thickness of the material is uneven, the thickness can be corrected in the pretreatment stage to ensure that the stamped parts have a consistent thickness after forming, so as to keep the material thickness uniform, and then facilitate uniform force without uneven force.

[0031] Step 3: Place the material pre-processed in step 1 inside the mold, and place the material to be processed on the mold and fix it to ensure that it will not deviate when the impact force is applied;

[0032] Fixing the material on the die can ensure that the stamped part will not shift during stamping, so that the stamped part can be kept stable during stamping, and the stamping can be completed perfectly;

[0033] Step 4: According to the properties of the material to be processed and the requirements of the forming shape, set appropriate press parameters, start the press according to the operating sequence of the press, and begin to apply impact force. During the stamping process, continuously monitor the deformation and stress distribution of the material to be processed, the working state of the mold and the operation of the press, and record the data during the forming process;

[0034] By adjusting different parameters according to different materials, the impact pressure can be perfectly adjusted, so that the material can be stamped into the required stamping parts without damaging the material. At the same time, the data in the stamping process can be continuously monitored and recorded during the stamping process, so as to obtain the stamping data;

[0035] Step 5: After recording the data in step 4, the shape change and stress distribution of the stamping parts are predicted using numerical simulation methods, so that the process can be optimized before the stamping parts are formed according to the shape change and stress distribution;

[0036] The recorded data can be predicted by the automation system through numerical simulation methods, so as to make judgments. In the stamping process, the impact force and impact location can be changed by using the automation system in conjunction with the systematic device, so as to optimize the entire process and improve the quality of stamping parts.

[0037] Step 6: After the stamping parts in step 5 are optimized, they can be formed. At this time, a robotic arm, conveyor belt or other equipment is used to take out the formed stamping parts, and quality inspection is carried out. The molded parts after quality inspection are then classified and placed.

[0038] The mold in step one can be designed or prepared in multiple forms to complete the forming of stamping parts of different shapes. After the position and gap of the mold in step one are adjusted, it is necessary to ensure that the mold is firmly installed.

[0039] When cleaning the material surface in step 2, a solvent or a detergent can be used for cleaning, and the heating treatment in step 2 can be performed by heat conduction or electric heating.

[0040] When the material is heat treated in step 2, the workpiece is first heated to an appropriate temperature according to the material and maintained for a certain period of time, and then slowly cooled.

[0041] In the step 2, the material can be modified by chemical treatment or anodizing treatment.

[0042] The press parameters in step 4 are pressure, stroke, speed, dwell time, number of cycles and temperature. In step 4, a cooling device is used to cool the stamped parts during the stamping process.

[0043] When stamping in step 4, the initial impact is performed first, and then refinement and adjustment are performed. The stamping in step 4 can be performed through the cooperation of the hydraulic system and the mechanical system.

[0044] When recording data in step five, real-time data can be acquired through sensors, monitoring equipment and imaging technology.

[0045] When stamping in step 4, automated equipment and systems are used, and the magnitude of the impact force in step 4 is determined according to the properties of the material and the shape required to be formed.

[0046] After the completed stamping parts are taken out in step six, surface treatment, trimming and cleaning processes are required.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping part forming method, characterized in that: The following steps are involved: Step 1: Design and prepare the mold according to the required molding shape and size, install the designed or prepared mold in the working area of ​​the press, and adjust the position and gap of the mold as required to ensure the stability of the mold: Step 2: Pre-treat the material to be processed. First, clean the surface of the material to make it free of dirt and grease. Then heat the material. Then, heat-treat the heated material. In step 1, spray lubricant inside the mold, modify the surface of the material, and calibrate the thickness of the material. Step 3: Place the material pre-processed in step 1 inside the mold, and place the material to be processed on the mold and fix it to ensure that it will not deviate when the impact force is applied; Step 4: According to the properties of the material to be processed and the requirements of the forming shape, set appropriate press parameters, start the press according to the operating sequence of the press, and begin to apply impact force. During the stamping process, continuously monitor the deformation and stress distribution of the material to be processed, the working state of the mold and the operation of the press, and record the data during the forming process; Step 5: After recording the data in step 4, the shape change and stress distribution of the stamping parts are predicted using numerical simulation methods, so that the process can be optimized before the stamping parts are formed according to the shape change and stress distribution; Step 6: After the stamping parts in step 5 are optimized, they can be formed. At this time, a robotic arm, conveyor belt or other equipment is used to take out the formed stamping parts, and quality inspection is carried out. The molded parts after quality inspection are then classified and placed.

2. A stamping part forming method according to claim 1, characterized in that: The mold in step one can be designed or prepared in multiple forms to complete the forming of stamping parts of different shapes. After the position and gap of the mold in step one are adjusted, it is necessary to ensure that the mold is firmly installed.

3. A stamping part forming method according to claim 1, characterized in that: When cleaning the material surface in step 2, a solvent or a detergent can be used for cleaning, and the heating treatment in step 2 can be performed by heat conduction or electric heating.

4. A stamping part forming method according to claim 1, characterized in that: When the material is heat treated in step 2, the workpiece is first heated to an appropriate temperature according to the material and maintained for a certain period of time, and then slowly cooled.

5. A stamping part forming method according to claim 1, characterized in that: In the step 2, the material can be modified by chemical treatment or anodizing treatment.

6. A stamping part forming method according to claim 1, characterized in that: The press parameters in step 4 are pressure, stroke, speed, dwell time, number of cycles and temperature. In step 4, a cooling device is used to cool the stamped parts during the stamping process.

7. A stamping part forming method according to claim 1, characterized in that: When stamping in step 4, the initial impact is performed first, and then refinement and adjustment are performed. The stamping in step 4 can be performed through the cooperation of the hydraulic system and the mechanical system.

8. A stamping part forming method according to claim 1, characterized in that: When recording data in step five, real-time data can be acquired through sensors, monitoring equipment and imaging technology.

9. A stamping part forming method according to claim 1, characterized in that: When stamping in step 4, automated equipment and systems are used, and the magnitude of the impact force in step 4 is determined according to the properties of the material and the shape required to be formed.

10. A stamping part forming method according to claim 1, characterized in that: After the completed stamping parts are taken out in step six, surface treatment, trimming and cleaning processes are required.