An adaptive high-precision press and its application in automotive parts processing

Abstract

This invention relates to the field of automotive parts manufacturing technology, and particularly to an adaptive high-precision press and its application in automotive parts processing. The press includes an upper mold body and a lower mold body; it also includes a buffer device arrayed around the periphery of the lower mold body, comprising an inner cylinder with a piston inside and an outer cylinder outside, with an oil reservoir between the inner and outer cylinders; a displacement detection unit including an electronic chamber at the bottom of the outer cylinder, a measuring rod at the top of the electronic chamber, and a magnetic ring connected to the piston at one end of the measuring rod extending into the inner cylinder; and a control assembly including a moving part within the oil reservoir, with a drive part at the end of the moving part. This invention detects the piston position using the displacement detection unit and adjusts the piston height using the control assembly, ensuring that the tops of the pistons in each buffer device are at the same height, thus preventing tilting or displacement when the upper mold body is pressed down.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, and in particular to an adaptive high-precision press and its application in automotive parts processing. Background Technology

[0002] Press machinery, encompassing punch presses and hydraulic presses, belongs to the category of precision-designed and versatile general-purpose pressure equipment. This type of machinery exhibits a wide range of applications and high production efficiency, suitable for various processes such as cutting, punching, blanking, bending, riveting, and shaping. Its working principle lies in applying high-intensity pressure to metal blanks, inducing plastic deformation and even fracture of the material, thereby achieving the processing and manufacturing of parts.

[0003] For high-speed presses, the production process is affected by various factors, such as differences in material thickness and mechanical properties, as well as adjustments to the stamping speed. These factors inevitably lead to a shift in the bottom dead center position. This shift directly relates to a decrease in the press's machining accuracy, making it difficult to meet the requirements of applications with strict precision requirements.

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

[0005] Although the aforementioned patented solution ensures the stamping accuracy of the press by monitoring the bottom dead center position and adjusting it to a preset range using a hydraulic adjustment mechanism, in actual operation scenarios, the press usually needs to be equipped with a dedicated buffer and shock absorption system to cope with the impact, vibration, and off-center load effects generated during stamping operations. However, if the hydraulic damper of the press's buffer system suffers from insufficient rebound force on one side due to oil contamination or valve blockage during prolonged use, it will cause a significant difference in resistance between the two sides of the press slide during movement. For example, if the damper on one side cannot rebound in time, the load on the other side will increase abnormally, causing the slide to tilt or deviate, resulting in off-center load.

[0006] The presses used in current automotive parts manufacturing face a specific challenge when processing thin-walled shell-shaped workpieces. During the stamping process, the workpiece is compressed, and its edges bend upwards under the constraint of the die due to stress. However, this upward-curving shape can sometimes cause the edges to get stuck in the upper die, a phenomenon known as "die jamming." Die jamming not only disrupts the continuity of the production process but also requires additional time and manpower for intervention and resolution, thus negatively impacting production efficiency.

[0007] Therefore, given the limitations of current press-fitting operations, developing an adaptive high-precision press and its application in automotive parts processing is particularly urgent and important for promoting the development of related technologies. Summary of the Invention

[0008] The purpose of this invention is to provide an adaptive high-precision press and its application in automotive parts processing, so as to solve the technical problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An adaptive high-precision press includes an upper mold body and a lower mold body;

[0011] It also includes a buffer device, which is arrayed around the periphery of the lower mold body. It includes an inner cylinder, a piston is provided inside the inner cylinder, an outer cylinder is provided outside the inner cylinder, and an oil storage chamber is provided between the inner cylinder and the outer cylinder.

[0012] The displacement detection unit includes an electronic compartment located at the bottom of the outer cylinder, a measuring rod at the top of the electronic compartment, and a magnetic ring connected to a piston at one end of the measuring rod that extends into the inner cylinder.

[0013] The control component includes a movable part disposed in an oil storage chamber, the end of which is provided with a drive part that drives itself to reciprocate within the oil storage chamber;

[0014] Before the upper mold body and the lower mold body are closed, the displacement detection unit performs equal height detection on the buffer devices distributed on the periphery of the lower mold body. If the top of the buffer device is not on the same horizontal plane, the drive unit drives the moving part to compress the oil storage chamber space so that the piston part extends further out of the inner cylinder.

[0015] Preferably, the top of the upper mold body is provided with a slider, and the slider is provided with an array of abutment members, the positions of which correspond to the buffer device.

[0016] Preferably, the abutting member includes an abutting block, which is disposed on the outside of the upper mold body, and its bottom is provided with an abutting groove corresponding to the piston member;

[0017] The first channel is located inside the slider, with one end connected to the abutment groove and the other end connected to the upper mold body.

[0018] Preferably, the upper mold body is provided with a second channel, one end of which is connected to the first channel, and the other end is connected to the bottom of the upper mold body.

[0019] Preferably, the first channel is provided with a flow detection unit; when the upper mold body and the lower mold body are separated, the flow rate of the air flowing through the first channel is detected by the flow detection unit. If the detected value is lower than the preset threshold, the drive unit drives the moving part to intermittently compress the oil storage chamber space so that the piston part intermittently squeezes the space in the abutment groove.

[0020] Preferably, the first channel is provided with a receiving cavity, the diameter of which is larger than the diameter of the first channel.

[0021] Preferably, the buffer device further includes a damping valve assembly disposed at the bottom of the inner cylinder, the inner cylinder being connected to the oil reservoir chamber via the damping valve assembly;

[0022] A seal is provided on the top of the inner and outer cylinders and seals them.

[0023] Preferably, a sealing rubber gasket is provided on the periphery of one end of the piston extending out of the inner cylinder, and the sealing rubber gasket and the abutment groove can form an interference fit.

[0024] Preferably, the bottom of the lower mold body is provided with a mold base, the top of the mold base is provided with an array of guide rods, the guide rods are slidably connected to the slider, and the top of the guide rods is provided with a hydraulic drive system connected to the slider.

[0025] The technical effects and advantages of this invention are as follows:

[0026] 1. This invention incorporates a buffer device on the press. Utilizing the interaction between damping fluid and damping gas, a reverse buffering force is generated when the contacting part comes into contact with the buffer device, effectively reducing rigid impacts and improving machining accuracy and workpiece quality.

[0027] 2. This invention introduces a displacement detection unit and a control component. The displacement detection unit uses a magnetostrictive displacement sensor to accurately detect the position of the piston. The control component compresses the oil reservoir chamber based on the detection results and adjusts the height of the piston to ensure that the tops of the pistons in each buffer device are at the same horizontal level. This prevents the load on the other side from abnormally increasing when the piston in one buffer device fails to rebound in time, which could lead to tilting or displacement of the pressure head.

[0028] 3. By setting up a contact part, a first channel, a second channel, and a flow detection unit, this invention achieves the cleaning of the upper surface of the workpiece and the monitoring and resolution of the "mold jamming" phenomenon; by utilizing the dual effects of gas backflow and vibration to separate the workpiece from the upper mold body, it effectively solves the problems in the processing of specific types of workpieces and further improves the applicability and reliability of the press. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main structure of the press of the present invention;

[0030] Figure 2 For the present invention Figure 1 Enlarged structural diagram of the structure at point A;

[0031] Figure 3 This is a schematic diagram of the buffer device of the present invention;

[0032] Figure 4 This is a schematic diagram of the connection structure between the piston component and the abutment groove of the present invention;

[0033] Figure 5 This is a schematic diagram of the main process flow of the press of the present invention.

[0034] The attached figures are labeled as follows:

[0035] 1. Upper mold body;

[0036] 2. Lower mold body;

[0037] 3. Buffer device; 301. Inner cylinder; 302. Outer cylinder; 303. Oil reservoir; 304. Piston assembly; 305. Damping valve assembly;

[0038] 4. Control components; 401. Moving parts; 402. Drive parts;

[0039] 5. Displacement detection unit;

[0040] 6. Abutting component; 601. Abutting block; 602. Abutting groove; 603. First channel; 604. Receiving cavity;

[0041] 7. Mold base;

[0042] 8. Guide rod;

[0043] 9. Slider;

[0044] 10. Hydraulic drive system;

[0045] 11. Second Channel. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0047] Reference Figures 1 to 5 As shown, the present invention proposes an adaptive high-precision press, including an upper mold body 1 and a lower mold body 2. The top of the upper mold body 1 is provided with a slider 9, and the slider 9 is provided with arrayed abutment members 6.

[0048] The bottom of the lower mold body 2 is provided with a mold base 7, and the top of the mold base 7 is provided with an array of guide rods 8. The guide rods 8 are slidably connected to the slider 9, and the top of the guide rods 8 is provided with a hydraulic drive system 10 connected to the slider 9. The hydraulic drive system 10 includes a hydraulic push cylinder. The hydraulic drive system 10 drives the upper mold body 1 to move up and down, which is the prior art and will not be described in detail here.

[0049] The buffer device 3, arrayed around the periphery of the lower mold body 2, includes an inner cylinder 301, a piston 304 inside the inner cylinder 301, an outer cylinder 302 outside the inner cylinder 301, and an oil reservoir 303 between the inner cylinder 301 and the outer cylinder 302. The inner cylinder 301 is filled with damping fluid (e.g., hydraulic oil), the bottom of the oil reservoir 303 is partially filled with hydraulic oil, and the remaining space of the oil reservoir 303 is filled with damping gas (e.g., nitrogen).

[0050] The buffer device 3 also includes a damping valve assembly 305, which is located at the bottom of the inner cylinder 301. The inner cylinder 301 is connected to the oil storage chamber 303 through the damping valve assembly 305.

[0051] A seal is provided on the top of the inner cylinder 301 and the outer cylinder 302 and seals them.

[0052] In this embodiment, the press is equipped with a control terminal, which contains a control system. The control system is used to control the movement of all electrical components on the press.

[0053] During operation, the workpiece to be processed is first placed on the lower mold body 2, and then the hydraulic drive system 10 is started. The hydraulic drive system 10 uses the slider 9 to drive the upper mold body 1 to move downward along the guide column. In the initial stage before contacting the workpiece, the upper mold body 1 can adopt a strategy of accelerating downward movement to improve processing efficiency.

[0054] Before the upper mold body 1 approaches the workpiece, its peripheral abutment 6 first comes into contact with the buffer device 3 around the lower mold body 2. This contact causes the piston 304 to apply pressure to the damping medium in the inner cylinder 301, forcing it to flow into the oil reservoir 303 through the damping valve assembly 305, and further compressing the nitrogen gas in the oil reservoir 303. This process generates a reverse buffering force, producing a damping effect on the movement of the upper mold body 1, aiming to reduce the excessive rigid impact that the upper mold body 1 may produce on the workpiece. As the upper mold body 1 continues to descend, the resistance of the nitrogen gas to the damping medium gradually increases, thereby increasing the strength of the buffering force.

[0055] When the upper mold 1 continues to descend until it contacts the bottom of the lower mold 2 and performs compression processing on the workpiece, the material at the edge of the workpiece undergoes upward bending deformation due to stress and under the constraint of the mold, thus realizing the forming process of the workpiece.

[0056] 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 mold body 1 to rise along the guide column through the slider 9, so that the abutment parts 6 around the upper mold body 1 release the pressure on the buffer device 3. Example 2

[0057] While the above embodiments can achieve extrusion plasticity of the workpiece, if the buffer device 3 suffers from insufficient rebound force on one side due to oil contamination or valve blockage during prolonged use, the pressure head of the press will experience a significant difference in resistance between the two sides during movement. Specifically, if the piston 304 in the buffer device 3 on one side cannot rebound in time, the load on the other side will abnormally increase, causing the pressure head to tilt or shift, resulting in uneven loading. Therefore, a technical improvement is made based on Embodiment 1, and the improved technical solution is as follows:

[0058] Reference Figures 1 to 5 As shown, the present invention proposes an adaptive high-precision press, which also includes a displacement detection unit 5. The displacement detection unit 5 includes an electronic compartment disposed at the bottom of the outer cylinder 302. A measuring rod is provided at the top of the electronic compartment. A magnetic ring is provided on one end of the measuring rod that extends into the inner cylinder 301 and is connected to the piston 304.

[0059] Reference Figure 3 As shown, the displacement detection unit 5 is actually a magnetostrictive displacement sensor, which is installed inside the piston component 304 and electrically connected to the control terminal. It is used to detect the specific position of the piston component 304 in the inner cylinder 301. The connection between the magnetostrictive displacement sensor and the piston component 304 is prior art and will not be described in detail here.

[0060] The electronic chamber, located at the bottom of the outer cylinder 302, houses the excitation module and signal processing circuitry, responsible for generating current pulses and receiving returned strain pulse signals. The probe, made of magnetostrictive material (such as iron-cobalt alloy), extends from the top of the electronic chamber to the inner cylinder 301, serving as the medium for pulse transmission and magnetic field interaction. A magnetic ring, fixed to the piston 304, moves synchronously with the piston. Its magnetic field interacts with the current pulse magnetic field in the waveguide, generating strain pulses. The excitation module within the electronic chamber generates periodic current pulses that propagate along the probe (waveguide), forming a ring-shaped magnetic field around it. When the magnetic ring moves to a certain position with the piston, its static magnetic field intersects with the ring-shaped magnetic field of the waveguide, triggering the magnetostrictive effect and causing localized mechanical strain pulses in the waveguide. The strain pulses propagate along the waveguide towards the electronic chamber at a fixed sound speed (approximately 2800-3000 m / s), while the current pulses continue to propagate towards the end of the waveguide. The electronic chamber accurately calculates the real-time position of the magnetic ring (i.e., the piston) by detecting the time difference between the current pulse emission time and the strain pulse arrival time.

[0061] Reference Figure 3 As shown, the control component 4 includes a movable part 401 disposed in the oil storage chamber 303, and the end of the movable part 401 is provided with a drive part 402 for driving itself to reciprocate within the oil storage chamber 303.

[0062] The moving part 401 includes a moving block that is slidably connected to the oil storage chamber 303; the driving part 402 includes a pneumatic telescopic member connected to the moving block. The end of the pneumatic telescopic member is provided with an air supply pipe connected to an external air supply unit. By controlling the amount of gas input from the external air supply unit to the pneumatic telescopic member, the distance of the moving part 401 in the oil storage chamber 303 can be controlled.

[0063] During application, before the upper mold body 1 and the lower mold body 2 are closed, the displacement detection unit 5 performs height verification on a series of buffer devices 3 arranged around the lower mold body 2. If the displacement detection unit 5 confirms that all piston parts 304 located around the lower mold body 2 have reached the preset position, it means that the piston parts 304 in these buffer devices 3 have been fully extended, that is, the tops of each piston part 304 are maintained at the same horizontal height. At this time, the hydraulic drive system 10 can be started to cause the upper mold body 1 to perform forming operation on the workpiece.

[0064] If the displacement detection unit 5 indicates that the piston 304 in a certain buffer device 3 has not reached the preset position, it means that the top of the piston 304 inside the mechanism has not extended sufficiently, which in turn causes the height of the piston 304 around the lower mold body 2 to be inconsistent.

[0065] In cases where the top of the piston 304 does not extend sufficiently, the control system activates the drive unit 402 corresponding to the substandard piston 304. This drive unit 402 then compresses the oil reservoir 303, forcing the hydraulic oil stored in the reservoir 303 to enter the inner cylinder 301 via the damping valve assembly 305, specifically the area below the piston 304. This increases the pressure in that area, using this pressure to push up the bottom of the piston 304 until the top of the piston 304 aligns with the tops of other pistons 304 at the same level. This is to prevent uneven heights of the piston tops. In such cases, if the contact element contacts the piston 304, the significant difference in resistance on both sides of the slide plate—meaning one side's buffer device 3 cannot quickly reset—will cause the other side to bear an abnormally increased load, ultimately leading to tilting or displacement of the upper mold body 1 and causing an off-center load. Example 3

[0066] Although the aforementioned embodiments can effectively perform the leveling task of piston 304, thereby preventing the occurrence of off-center loading of the upper die 1, presses generally face a specific problem when processing thin-walled shell-like workpieces. Specifically, when the press performs stamping on such workpieces, the workpiece deforms under pressure, and its edge area bends upward under the constraint of the die to form the desired shape. However, this upward bending of the edge can sometimes cause the edge of the workpiece to be tightly clamped by the upper die 1, i.e., a "die jamming" phenomenon occurs. In view of the above, a technical improvement is made based on Embodiment 2, and the improved technical solution is as follows:

[0067] Reference Figures 1 to 5 As shown, the present invention proposes an adaptive high-precision press, wherein the slider 9 is provided with arrayed abutment members 6, the positions of which correspond to the buffer device 3.

[0068] The abutting member 6 includes an abutting block 601, which is disposed on the outside of the upper mold body 1, and has an abutting groove 602 at its bottom corresponding to the piston member 304.

[0069] The first channel 603 is located inside the slider 9, with one end connected to the abutment groove 602 and the other end connected to the upper mold body 1.

[0070] Reference Figures 1 to 2 As shown, the upper mold body 1 is provided with a second channel 11. One end of the second channel 11 is connected to the first channel 603, and the other end is connected to the bottom of the upper mold body 1.

[0071] A sealing rubber gasket is provided on the periphery of one end of the piston 304 that extends out of the inner cylinder 301, and the sealing rubber gasket and the abutment groove 602 can form an interference fit.

[0072] The first channel 603 is equipped with a flow detection unit. When the upper mold body 1 and the lower mold body 2 are separated, the flow detection unit detects the air flow rate through the first channel 603. If the detected value is lower than the preset threshold, the drive unit 402 drives the moving unit 401 to intermittently compress the space of the oil storage chamber 303 so that the piston 304 intermittently squeezes the space in the abutment groove 602.

[0073] The flow detection unit includes a flow sensor disposed inside the first channel 603 to detect the air flow rate through the first channel 603, and is electrically connected to the control terminal.

[0074] The first channel 603 is provided with a receiving cavity 604, the diameter of which is larger than the diameter of the first channel 603. By providing the receiving cavity 604, the gas present between the upper mold body 1 and the lower mold body 2 when they are closed is contained, thus preventing the gas from existing between the upper mold body 1 and the lower mold body 2 and affecting the molding quality of the workpiece.

[0075] During operation, as the upper mold body 1 descends, the top of the piston 304 first enters the preset abutment groove, causing the sealing rubber gasket installed on the top of the piston 304 to form an interference fit with the abutment groove. This fit causes the sealing rubber gasket to compress the internal space of the abutment groove, forcing the internal gas to be ejected from the bottom of the upper mold body 1 through the preset first channel 603 and second channel 11. This cleans the upper surface of the workpiece and prevents impurities on the upper surface of the workpiece from being excessively squeezed after the upper mold body 1 and the lower mold body 2 are closed, thus avoiding the formation of blemishes on the workpiece.

[0076] After mold closing, the system enters the pressure holding stage, the duration of which is determined by the time control module in the control system. After pressure holding, the hydraulic drive system 10 starts reverse motion, driving the upper mold body 1 to separate from the lower mold 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 mold body 1 should be less than its falling speed, to avoid the workpiece being lifted up by the rapid rise of the upper mold body 1.

[0077] During mold opening, the rising speed of the upper mold body 1 is set slightly faster than the recovery speed of the piston 304 (a speed ratio of 1:1.1 is recommended). This design aims to create a negative pressure area between the piston 304 and the abutment groove, attracting external gas into this area through the second channel 11 and the first channel 603. After the abutment groove is completely separated from the piston 304, the rising speed of the upper mold body 1 can be appropriately increased to improve production efficiency.

[0078] It should be emphasized that although a negative pressure is formed between the piston 304 and the abutment groove 602, it is not enough to lift the workpiece from the lower mold body 2.

[0079] To monitor the "mold jamming" phenomenon, the system is equipped with a flow monitoring unit to detect the gas flow rate through the first channel 603. If the flow rate remains at a preset level, it indicates that the workpiece is not jammed by the upper mold body 1, and the rising speed of the upper mold body 1 can be gradually increased. If the flow rate is lower than the preset value, it indicates that a mold jamming situation has occurred, that is, the edge of the workpiece is jammed by the upper mold body 1, causing it to block the second channel 11, thereby reducing the amount of gas drawn into the negative pressure space.

[0080] Once mold jamming is detected, the system control drive unit 402 intermittently extends the moving unit 401 to compress the space in the oil reservoir 303, accelerating the release of hydraulic oil from the oil reservoir 303. The hydraulic oil quickly enters the inner cylinder 301 through the damping valve assembly 305, increasing the return speed of the piston 304 to compensate for the speed difference between the rise of the upper mold body 1 and the return of the piston 304. When the piston 304 rises, the sealing rubber gasket at its top further compresses the gas in the abutment groove, causing the gas that has been drawn in to be ejected again through the first channel 603 and the second channel 11. At the same time, the top of the piston 304 generates continuous impact vibration with the abutment groove, and the vibration is transmitted to the upper mold body 1 through the slider 9. Under the dual action of gas backflow and vibration, the workpiece is separated from the upper mold body 1, thereby releasing the mold jamming state.

[0081] It is worth noting that when implementing the intermittent drive strategy, the recovery speed of the piston 304 is set to be higher than the rising speed of the upper mold body 1 to ensure that the top of the piston 304 can effectively impact the abutment groove and generate the necessary vibration.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adaptive high-precision press, comprising an upper mold body and a lower mold body, characterized in that: A buffer device, which is arrayed around the periphery of the lower mold body, includes an inner cylinder, a piston is provided inside the inner cylinder, an outer cylinder is provided outside the inner cylinder, and an oil storage chamber is provided between the inner cylinder and the outer cylinder. The displacement detection unit includes an electronic compartment located at the bottom of the outer cylinder, a measuring rod on the electronic compartment, and a magnetic ring connected to a piston component at one end of the measuring rod that extends into the inner cylinder. The control component includes a movable part disposed in the oil storage chamber, the movable part being provided with a drive part that drives itself to reciprocate within the oil storage chamber; Before the upper mold body and the lower mold body are closed, the displacement detection unit performs equal height detection on the buffer devices distributed on the periphery of the lower mold body. If the top of the buffer device is not on the same horizontal plane, the drive unit drives the moving part to compress the oil storage chamber space so that the piston part extends further from the inner cylinder. The top of the upper mold body is provided with a slider, and the slider is provided with an array of abutment members, the positions of which correspond to the buffer device; The abutment includes: An abutment block is located on the outside of the upper mold body, and its bottom is provided with an abutment groove corresponding to the piston component; The first channel is located inside the slider, with one end connected to the abutment groove and the other end connected to the upper mold body; The upper mold body is provided with a second channel, one end of which is connected to the first channel, and the other end extends directly to the bottom of the upper mold body; The first channel is equipped with a flow detection unit. When the upper mold body and the lower mold body are separated, the flow detection unit detects the air flow rate through the first channel. If the detected value is lower than the preset threshold, the drive unit drives the moving part to intermittently compress the oil storage chamber space so that the piston part intermittently squeezes the space in the abutment groove.

2. The adaptive high-precision press according to claim 1, characterized in that, The first channel is provided with a receiving cavity, the diameter of which is larger than the diameter of the first channel.

3. The adaptive high-precision press according to claim 2, characterized in that, The buffer device further includes: a damping valve assembly, which is disposed at the bottom of the inner cylinder, and the inner cylinder is connected to the oil storage chamber through the damping valve assembly; A seal is provided on the top of the inner and outer cylinders and seals them.

4. The adaptive high-precision press according to claim 2, characterized in that, The piston is provided with a sealing rubber gasket on the periphery of one end extending from the inner cylinder, and the sealing rubber gasket and the abutment groove can form an interference fit.

5. The adaptive high-precision press according to claim 1, characterized in that, The bottom of the lower mold body is provided with a mold base, and the top of the mold base is provided with an array of guide rods. The guide rods are slidably connected to the slider, and the top of the guide rods is provided with a hydraulic drive system connected to the slider.

6. An application of an adaptive high-precision press as described in any one of claims 1-5 in the processing of automotive parts.

Images