Self-adaptive high-precision press machine and application thereof in automobile part machining

Abstract

The invention relates to the technical field of automobile part production, in particular to a self-adaptive high-precision press machine and application in automobile part machining. The self-adaptive high-precision press machine comprises an upper die body and a lower die body; the buffer devices are distributed on the peripheral side of the lower die body in an array mode and comprise inner cylinder bodies, piston pieces are arranged in the inner cylinder bodies, outer cylinder bodies are arranged on the outer sides of the inner cylinder bodies, and oil storage cavities are formed between the inner cylinder bodies and the outer cylinder bodies; the displacement detection unit comprises an electronic bin arranged at the bottom of the outer cylinder body, a measuring rod is arranged at the top of the electronic bin, and a magnetic ring connected with the piston piece is arranged at the end, extending into the inner cylinder body, of the measuring rod; the regulation and control assembly comprises a moving part arranged in the oil storage cavity, and a driving part is arranged at the end of the moving part; the position of the piston piece is detected through the displacement detection unit, the height of the piston piece is adjusted through the adjusting and controlling assembly, the top ends of the piston pieces in the buffering devices are equal in height, and the problem that the upper die body inclines or deviates when pressed downwards is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts production, and particularly to an adaptive high-precision press and its application in automotive parts processing. Background Art

[0002] Press machinery, including punching presses and hydraulic presses, belongs to general-purpose pressure equipment with precise design and diverse functions. This type of machinery exhibits a wide range of applications and high production performance, and is suitable for various technological processes such as cutting operations, punching processes, material blanking, bending forming, riveting fixation, and plastic processing. Its working principle is to apply high-intensity pressure to metal blanks, inducing plastic deformation or even fracture of the materials, thereby achieving the processing and manufacturing of components.

[0003] For high-speed presses, their production processes are affected by various factors, such as differences in material thickness and mechanical properties, as well as adjustments in stamping speed. These factors will inevitably cause the position of the bottom dead center to shift. This shift phenomenon is directly related to the decline in the processing accuracy of the press, making it difficult to meet application scenarios with strict requirements for processing accuracy.

[0004] Chinese Patent with application number CN202310818705.3 discloses a hydraulically adjustable press, including a stamping slider, a crankshaft, a connecting rod, and an adjusting screw. The adjusting screw is connected to a hydraulic cylinder, and the bottom end of the hydraulic cylinder is connected to the stamping slider; the hydraulically adjustable press is also provided with a bottom dead center detector, an oil tank, and an oil pump, and the oil pump is connected to the hydraulic cylinder. During actual use, the position of the bottom dead center of the press can be monitored in real time, and the position of the bottom dead center can be adjusted to a preset range by hydraulic means, ensuring the continuous production of the press and ensuring the stamping accuracy of the press.

[0005] Although the foregoing patent solution ensures the stamping accuracy of the press by monitoring the position of the bottom dead center of the press and using a hydraulic adjustment mechanism to adjust it to a preset range, in actual operating scenarios, the press usually also needs to be equipped with a dedicated buffer and shock absorption system to cope with the impact, vibration, and eccentric load effects generated during stamping operations. However, when the buffer system of the press is used for a long time, if the hydraulic damper has insufficient unilateral resilience due to oil contamination or valve blockage, it will cause a significant difference in resistance on both sides when the press slider moves. For example, when the unilateral damper cannot rebound in time, the load on the other side will increase abnormally, resulting in the tilt or offset of the slider and forming an eccentric load.

[0006] The presses currently used in automotive parts manufacturing face a specific challenge when processing thin-walled shell workpieces. When the press performs stamping operations on them, the workpieces are compressed, and their edges bend upward under the constraint of the die due to stress. However, this form of the workpiece with the edges warping upward sometimes leads to the phenomenon that the edge part is stuck by the upper die body, that is, "die jamming". The die jamming problem not only interrupts the continuity of the production process but also requires additional time and human resources for intervention and solution, thus having an adverse impact on production efficiency.

[0007] Therefore, in view of the limitations of the current press-fitting operations, it is particularly urgent and important to develop an adaptive high-precision press and its application in automotive parts processing to promote the development of related technical fields. Summary of the Invention

[0008] The purpose of the present invention is to provide an adaptive high-precision press and its application in automotive parts processing to solve the technical problems raised in the above background technology.

[0009] To achieve the above purpose, the present invention provides the following technical solutions: An adaptive high-precision press includes an upper die body and a lower die body; It further includes a buffer device, which is arrayed on the periphery of the lower die body. The buffer device includes an inner cylinder body. A piston member is provided inside the inner cylinder body. An outer cylinder body is provided outside the inner cylinder body. An oil storage chamber is provided between the inner cylinder body and the outer cylinder body; A displacement detection unit, which includes an electronic chamber provided at the bottom of the outer cylinder body. A measuring rod is provided at the top of the electronic chamber. A magnetic ring connected to the piston member is provided at one end of the measuring rod extending into the inner cylinder body; A regulation component, which includes a moving part provided in the oil storage chamber. A driving part for driving the moving part to reciprocate in the oil storage chamber is provided at the end of the moving part; Before the upper die body and the lower die body are closed, the buffer devices distributed on the periphery of the lower die body are subjected to equal height detection through the displacement detection unit. If the tops of the buffer devices are not on the same horizontal plane, the driving part drives the moving part to compress the space of the oil storage chamber so that the piston member further extends out of the inner cylinder body.

[0010] Preferably, a slider is provided at the top of the upper die body. An array of abutting members is provided on the slider. The positions of the abutting members correspond to the buffer devices.

[0011] Preferably, the abutting member includes an abutting block, which is provided on the outside of the upper die body. An abutting groove corresponding to the piston member is provided at the bottom of the abutting block; A first channel is provided inside the slider. One end of the first channel is communicated with the abutting groove, and the other end is connected to the upper die body.

[0012] Preferably, a second channel is provided on the upper mold body, one end of the second channel is connected to the first channel, and the other end of the second channel directly passes through the bottom of the upper mold body.

[0013] Preferably, a flow detection unit is provided inside the first channel; when the upper mold body and the lower mold body are separated, the air flow rate flowing through the first channel is detected by the flow detection unit. If the detection value is lower than a preset threshold value, the driving part drives the moving part to intermittently compress the space of the oil storage chamber, so that the piston part intermittently squeezes the space in the abutment groove.

[0014] Preferably, an accommodating cavity is provided on the first channel, and the diameter of the accommodating cavity is larger than the diameter of the first channel.

[0015] Preferably, the buffer device further comprises a damping valve group, which is arranged at the bottom of the inner cylinder body, and the inner cylinder body is connected with the oil storage chamber through the damping valve group; The sealing member is arranged on the top of the inner cylinder body and the outer cylinder body and seals them.

[0016] Preferably, a sealing rubber pad is provided on the circumferential side of one end of the piston member extending out of the inner cylinder body, and the sealing rubber pad and the abutting groove can form an interference fit.

[0017] Preferably, a mold base is provided at the bottom of the lower mold body, an array-distributed guide rod is provided at the top of the mold base, the guide rod is slidably connected to the slider, and a hydraulic drive system connected to the slider is provided at the top of the guide rod.

[0018] Technical effects and advantages of the present invention: 1. The present invention provides a buffer device on the press machine and utilizes the interaction between the damping liquid and the damping gas to generate a reverse buffer force when the abutment member contacts the buffer device, thereby effectively reducing rigid impact and improving processing accuracy and workpiece quality.

[0019] 2. The present invention introduces a displacement detection unit and a regulating component. The displacement detection unit uses a magnetostrictive displacement sensor to accurately detect the position of the piston. The regulating component compresses the oil storage chamber according to the detection result and adjusts the height of the piston to keep the top of the piston of each buffer device at the same level, so as to avoid the problem that when the piston in the buffer device on one side cannot rebound in time, the load on the other side will increase abnormally, causing the pressure head to tilt or shift.

[0020] 3. The present invention realizes the cleaning of the upper surface of the workpiece and the monitoring and elimination of the "mold jamming" phenomenon by arranging an abutment member, a first channel, a second channel and a flow detection unit; the dual effects of gas recoil and vibration are used to separate the workpiece and the upper mold body, which effectively solves the difficulties in the processing of specific types of workpieces and further improves the applicability and reliability of the press. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the main structure of the press of the present invention; Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at position A in; Figure 3 Schematic diagram of the structure of the buffer device of the present invention; Figure 4 Schematic diagram of the connection structure between the piston member and the abutment groove of the present invention; Figure 5 Schematic diagram of the main process of the press of the present invention.

[0022] Reference numerals are: 1. Upper die body; 2. Lower die body; 3. Buffer device; 301. Inner cylinder body; 302. Outer cylinder body; 303. Oil storage chamber; 304. Piston member; 305. Damper valve group; 4. Regulation component; 401. Moving part; 402. Driving part; 5. Displacement detection unit; 6. Abutting member; 601. Abutting block; 602. Abutment groove; 603. First channel; 604. Accommodation cavity; 7. Die holder; 8. Guide rod; 9. Slide block; 10. Hydraulic drive system; 11. Second channel. Specific embodiments

[0023] 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 work shall fall within the protection scope of the present invention. Embodiment 1

[0024] Referring to Figures 1 to 5 As shown, the present invention provides an adaptive high-precision press, including an upper die body 1 and a lower die body 2. A slide block 9 is provided at the top of the upper die body 1, and abutting members 6 are provided on the slide block 9 in an array distribution.

[0025] A die holder 7 is provided at the bottom of the lower die body 2. Guide rods 8 are provided at the top of the die holder 7 in an array distribution. The guide rods 8 are slidably connected to the sliders 9. A hydraulic drive system 10 connected to the sliders 9 is provided at the top of the guide rods 8. The hydraulic drive system 10 includes a hydraulic push cylinder. Driving the upper die body 1 to move up and down by the hydraulic drive system 10 belongs to the prior art and will not be elaborated here.

[0026] Buffer devices 3 are arranged in an array on the periphery of the lower die body 2. Each buffer device 3 includes an inner cylinder body 301. A piston member 304 is arranged inside the inner cylinder body 301. An outer cylinder body 302 is arranged outside the inner cylinder body 301. An oil storage chamber 303 is arranged between the inner cylinder body 301 and the outer cylinder body 302. The inside of the inner cylinder body 301 is filled with a damping liquid (such as hydraulic oil). Part of the hydraulic oil is filled at the bottom of the oil storage chamber 303. The remaining space of the oil storage chamber 303 is provided with a damping gas (such as nitrogen).

[0027] The buffer device 3 further includes a damping valve group 305, which is arranged at the bottom of the inner cylinder body 301. The inner cylinder body 301 is communicated with the oil storage chamber 303 through the damping valve group 305.

[0028] Sealing members are arranged at the tops of the inner cylinder body 301 and the outer cylinder body 302 to seal them.

[0029] In this embodiment, a control terminal is provided on the press. A control system is provided inside the control terminal. The control system is used to control the movement of all electrical components on the press.

[0030] During the use process, first, the workpiece to be processed is placed on the lower die body 2, and then the hydraulic drive system 10 is started. The hydraulic drive system 10 drives the upper die body 1 to move downward along the guide columns by means of the sliders 9. In the initial stage when the upper die body 1 does not contact the workpiece, an accelerated downward movement strategy can be adopted to improve the processing efficiency.

[0031] Before the upper die body 1 approaches the workpiece to be processed, the abutting members 6 around it will first abut against the buffer devices 3 around the lower die body 2. This contact causes the piston member 304 to apply pressure to the damping medium in the inner cylinder body 301, forcing it to flow into the oil storage chamber 303 through the damping valve group 305, and then compressing the nitrogen in the oil storage chamber 303. This process will generate a reverse buffer force, which has a damping effect on the movement of the upper die body 1, aiming to reduce the excessive rigid impact that the upper die body 1 may exert on the workpiece. As the upper die body 1 continues to move downward, the resistance of the nitrogen to the damping medium gradually increases, thereby increasing the intensity of the buffer force.

[0032] When the upper die body 1 continues to move downward until it contacts the bottom of the lower die body 2 and compresses the workpiece for processing, the material at the edge of the workpiece bends upward under the action of stress and is deformed under the constraint of the die, realizing the forming processing of the workpiece.

[0033] After the mold is closed and the workpiece is processed, the system enters the pressure holding stage. After the pressure holding cycle ends, the control system drives the upper die body 1 to rise along the guide column through the slider 9, so that the abutting member 6 around the upper die body 1 releases the pressing operation on the buffer device 3. Embodiment 2

[0034] Although the above embodiments can achieve the extrusion plasticity of the workpiece, when the buffer device 3 is used for a long time, if the buffer device 3 has insufficient unilateral resilience due to oil pollution or valve blockage, it will cause a significant difference in resistance on both sides when the ram of the press moves. That is, when the piston member 304 in the unilateral buffer device 3 cannot rebound in time, the load on the other side will increase abnormally, resulting in the ram tilting or shifting, forming an eccentric load. In view of this, based on Embodiment 1, technical improvements are made, and the improved technical solution is as follows: Referring to Figures 1 to 5 As shown, the present invention provides an adaptive high-precision press, which further includes a displacement detection unit 5. The displacement detection unit 5 includes an electronic bin provided at the bottom of the outer cylinder 302. A measuring rod is provided at the top of the electronic bin, and a magnetic ring connected to the piston member 304 is provided at one end of the measuring rod extending into the inner cylinder 301.

[0035] Referring to Figure 3 As shown, the displacement detection unit 5 is actually a magnetostrictive displacement sensor, which is arranged inside the piston member 304 and is electrically connected to the control terminal for detecting the specific position of the piston member 304 in the inner cylinder 301. The connection between the magnetostrictive displacement sensor and the piston member 304 belongs to the prior art and will not be elaborated here.

[0036] The electronic bin is located at the bottom of the outer cylinder 302 and houses an excitation module and a signal processing circuit, which are responsible for generating current pulses and receiving the returned strain pulse signals. The measuring rod is made of magnetostrictive material (such as iron-cobalt alloy), extends from the top of the electronic bin to the inner cylinder 301, and serves as a medium for pulse transmission and magnetic field interaction. The magnetic ring is fixed on the piston member 304 and moves synchronously with the piston. Its magnetic field interacts with the magnetic field of the current pulse in the waveguide to generate a strain pulse. The excitation module in the electronic bin generates periodic current pulses, which propagate along the measuring rod (waveguide) and form a circular magnetic field around it. When the magnetic ring moves to a certain position with the piston, its static magnetic field intersects with the circular magnetic field of the waveguide, triggering the magnetostrictive effect, resulting in local mechanical strain pulses in the waveguide. The strain pulses propagate along the waveguide towards the electronic bin at a fixed sound speed (about 2800 - 3000 m / s), while the current pulses continue to be transmitted to the end of the waveguide. The electronic bin accurately calculates the real-time position of the magnetic ring (i.e., the piston) by detecting the time difference between the emission time of the current pulse and the arrival time of the strain pulse.

[0037] Referring to Figure 3As shown, the regulating component 4 includes a moving part 401 disposed in the oil storage chamber 303, and a driving part 402 for driving the moving part 401 to reciprocate in the oil storage chamber 303 is provided at the end of the moving part 401.

[0038] The moving part 401 includes a moving block that is hermetically and slidably connected to the oil storage chamber 303; the driving part 402 includes a pneumatic telescopic part connected to the moving block, and an air delivery pipe connected to an external air supply unit is provided at the end of the pneumatic telescopic part. By controlling the amount of gas input by the external air supply unit into the pneumatic telescopic part, the distance of the moving part 401 in the oil storage chamber 303 can be controlled.

[0039] During application, before the upper die body 1 and the lower die body 2 are closed, a displacement detection unit 5 is used to perform an equal height verification on a series of buffer devices 3 arranged around the lower die body 2. If the displacement detection unit 5 confirms that all the piston parts 304 located around the lower die body 2 reach the preset positions, it means that the piston parts 304 in these buffer devices 3 have all fully extended, that is, the tops of all the piston parts 304 are maintained at the same horizontal height. At this time, the hydraulic drive system 10 can be started to cause the upper die body 1 to perform a forming operation on the workpiece.

[0040] If the displacement detection unit 5 indicates that the piston part 304 in a certain buffer device 3 does not reach the preset position, it means that the top of the piston part 304 inside this mechanism does not fully extend, thereby causing the heights of the piston parts 304 around the lower die body 2 to be inconsistent.

[0041] In response to the situation where the top of the piston part 304 does not extend sufficiently, the control system will activate the driving part 402 of the corresponding non-compliant piston part 304. The driving part 402 then causes the moving part 401 to compress the oil storage chamber 303, forcing the hydraulic oil stored in the oil storage chamber 303 to enter the inside of the inner cylinder body 301 through the damping valve group 305, specifically the area below the piston part 304, thereby increasing the pressure in this area. This pressure is used to push up the bottom of the piston part 304 until the top of this piston part 304 is aligned with the tops of other piston parts 304 on the same horizontal plane. This move aims to prevent the upper die body 1 from tilting or displacing, resulting in an off-load phenomenon when the contact element contacts the piston part 304 due to a significant difference in resistance on both sides of the slide plate, that is, when one side of the buffer device 3 cannot be quickly reset, the other side bears an abnormally increased load. Embodiment 3

[0042] Although the foregoing embodiments can effectively perform the leveling task of the piston member 304, thereby preventing the occurrence of the eccentric load problem of the upper die body 1, when processing thin-walled shell workpieces, the press generally faces a specific problem. Specifically, when the press stamps and forms such workpieces, the workpieces are deformed under pressure, and the edge regions thereof are bent upward under the restriction of the die to form the required shape. However, this upward warping of the edge sometimes causes the edge portion of the workpiece to be tightly clamped by the upper die body 1, that is, the "die jamming" phenomenon occurs. In view of the above situation, on the basis of the second embodiment, technical improvements are made, and the improved technical solution is as follows: Referring to Figures 1 to 5 as shown, the present invention provides an adaptive high-precision press, on which the slider 9 is provided with abutting members 6 distributed in an array, and the positions of the abutting members 6 correspond to the buffer devices 3.

[0043] The abutting member 6 includes an abutting block 601, which is arranged outside the upper die body 1, and an abutting groove 602 corresponding to the piston member 304 is provided at the bottom thereof.

[0044] A first channel 603 is arranged inside the slider 9, one end of which is communicated with the abutting groove 602, and the other end is connected to the upper die body 1.

[0045] Referring to Figures 1 to 2 as shown, a second channel 11 is provided on the upper die body 1, one end of the second channel 11 is communicated with the first channel 603, and the other end leads directly to the bottom of the upper die body 1.

[0046] A sealing rubber pad is provided on the circumferential side of the end of the piston member 304 extending out of the inner cylinder body 301, and the sealing rubber pad and the abutting groove 602 can form an interference fit.

[0047] A flow detection unit is arranged inside the first channel 603; when the upper die body 1 and the lower die body 2 are separated, the air flow flowing through the first channel 603 is detected by the flow detection unit. If the detected value is lower than the preset threshold, the driving part 402 drives the moving part 401 to intermittently compress the space of the oil storage chamber 303, so that the piston member 304 intermittently extrudes the space in the abutting groove 602.

[0048] The flow detection unit includes a flow sensor arranged inside the first channel 603 for detecting the air flow flowing through the first channel 603, and is electrically connected to the control terminal.

[0049] A receiving cavity 604 is provided on the first channel 603, and the diameter of the receiving cavity 604 is larger than that of the first channel 603. By providing the receiving cavity 604, the gas existing between the upper die body 1 and the lower die body 2 when they are closed is received, so as to avoid the influence of this gas on the forming quality of the workpiece.

[0050] During the operation, as the upper die body 1 descends, the top end of the piston member 304 first enters the preset abutting groove, causing the sealing rubber gasket installed at the top end of the piston member 304 to form an interference fit with the abutting groove. This fit results in the compression of the internal space of the abutting groove by the sealing rubber gasket, forcing the internal gas to be ejected from the bottom of the upper die body 1 through the preset first channel 603 and the second channel 11, achieving the cleaning of the upper surface of the workpiece and avoiding the phenomenon that impurities existing on the upper surface of the workpiece cause excessive extrusion of the workpiece and then form scars on the workpiece after the upper die body 1 and the lower die body 2 are closed.

[0051] After the mold closing is completed, the system enters the pressure holding stage, and the pressure holding duration is determined by the time control module set in the control system. After the pressure holding ends, the hydraulic drive system 10 starts to move in the reverse direction, driving the separation of the upper die body 1 and the lower die body 2 (i.e., mold opening). During this process, it is necessary to ensure that the retraction speed of the hydraulic drive system 10 is lower than its extension speed, that is, the rising speed of the upper die body 1 should be less than its descending speed, so as to avoid the workpiece being lifted by the rapid rising of the upper die body 1.

[0052] During mold opening, the rising speed of the upper die body 1 is set to be slightly faster than the rising speed of the piston member 304 (the recommended speed ratio is 1:1.1). This design aims to form a negative pressure area between the piston member 304 and the abutting groove, attracting external gas to enter this area through the second channel 11 and the first channel 603. After the abutting groove and the piston member 304 are completely separated, the rising speed of the upper die body 1 can be appropriately increased to improve production efficiency.

[0053] It should be emphasized that although a negative pressure is formed between the piston member 304 and the abutting groove 602, it is not sufficient to suck the workpiece out of the lower die body 2.

[0054] To monitor the "mold jamming" phenomenon, the system is equipped with a flow monitoring unit for detecting the gas flow rate through the first channel 603. If the flow rate remains at the preset level, it indicates that the workpiece is not jammed by the upper die body 1, and at this time, the rising speed of the upper die body 1 can be gradually increased. If the flow rate is lower than the preset value, it indicates that a mold jamming situation occurs, that is, the edge of the workpiece is jammed by the upper die body 1, resulting in the blockage of the second channel 11 and thus reducing the gas inhalation volume of the negative pressure space.

[0055] Once the die is stuck, the system controls the driving part 402 to drive the moving part 401 to compress the space of the oil storage chamber 303 in an intermittent extension manner, accelerate the release of the hydraulic oil in the oil storage chamber 303, and the hydraulic oil quickly enters the inner cylinder 301 through the damping valve group 305, thereby increasing the recovery speed of the piston member 304 to compensate for the speed difference between the rise of the upper die body 1 and the recovery of the piston member 304. When the piston member 304 rises, the sealing rubber gasket on its top further compresses the gas in the abutment groove, causing the inhaled gas to be ejected again through the first channel 603 and the second channel 11; at the same time, the top of the piston member 304 and the abutment groove produce continuous impact vibration, and the vibration is transmitted to the upper die body 1 through the slider 9. Under the dual effects of gas recoil and vibration, the workpiece is separated from the upper die body 1, thereby releasing the die stuck state.

[0056] It is worth noting that when implementing the intermittent driving strategy, the recovery speed of the piston member 304 is set to be higher than the rising speed of the upper mold body 1 to ensure that the top of the piston member 304 can effectively impact the abutment groove to generate the necessary vibration.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adaptive high-precision press, comprising an upper die body and a lower die body, characterized in that: A buffer device, which is arranged in an array on the periphery of the lower die body, and comprises an inner cylinder body. A piston part is arranged inside the inner cylinder body. An outer cylinder body is arranged outside the inner cylinder body. An oil storage chamber is arranged between the inner cylinder body and the outer cylinder body; A displacement detection unit, which comprises an electronic chamber arranged at the bottom of the outer cylinder body. A measuring rod is arranged on the electronic chamber. A magnetic ring connected to the piston part is arranged at one end of the measuring rod extending into the inner cylinder body; A regulation component, which comprises a moving part arranged in the oil storage chamber. A driving part for driving the moving part to reciprocate in the oil storage chamber is arranged on the moving part; Before the upper die body and the lower die body are closed, the buffer devices arranged on the periphery of the lower die body are subjected to equal height detection through the displacement detection unit. If the tops of the buffer devices are not on the same horizontal plane, the driving part drives the moving part to compress the space of the oil storage chamber, so that the piston part further extends out of the inner cylinder body.

2. The adaptive high-precision press according to claim 1, characterized in that, A slider is arranged at the top of the upper die body. Abutting parts are arranged on the slider in an array. The positions of the abutting parts correspond to those of the buffer devices.

3. The adaptive high-precision press according to claim 2, wherein, The abutting part comprises: An abutting block, which is arranged on the outside of the upper die body. An abutting groove corresponding to the piston part is arranged at the bottom of the abutting block; A first channel, which is arranged inside the slider. One end of the first channel is communicated with the abutting groove, and the other end is connected with the upper die body.

4. The adaptive high-precision press according to claim 3, characterized in that A second channel is arranged on the upper die body. One end of the second channel is communicated with the first channel, and the other end directly leads to the bottom of the upper die body.

5. The adaptive high-precision press according to claim 3, wherein A flow rate detection unit is arranged inside the first channel. When the upper die body and the lower die body are separated, the air flow rate flowing through the first channel is detected through the flow rate detection unit. If the detected value is lower than a preset threshold, the driving part drives the moving part to perform intermittent compression on the space of the oil storage chamber, so that the piston part intermittently extrudes the space in the abutting groove.

6. The adaptive high-precision press according to claim 3, wherein An accommodation chamber is arranged on the first channel. The diameter of the accommodation chamber is larger than that of the first channel.

7. The adaptive high-precision press according to claim 6, characterized in that, The buffer device further comprises: A damping valve group, which is arranged at the bottom of the inner cylinder body. The inner cylinder body is communicated with the oil storage chamber through the damping valve group; A sealing member, which is arranged at the top of the inner cylinder body and the outer cylinder body and seals them.

8. The adaptive high-precision press according to claim 2, wherein A sealing rubber pad is arranged on the periphery of one end of the piston part extending out of the inner cylinder body. The sealing rubber pad and the abutting groove can form an interference fit.

9. The adaptive high-precision press according to claim 1, wherein, A die base is arranged at the bottom of the lower die body. Guide rods are arranged on the top of the die base in an array. The guide rods are slidably connected with the slider. A hydraulic driving system connected with the slider is arranged at the top of the guide rods.

10. An adaptive high-precision press according to any one of claims 1-9 and its application in the processing of automobile parts.

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