A hydraulic equipment control system and forming method for elongating blind hole parts

Abstract

The present invention relates to the technical field of elongated forming of blind hole parts, and in particular to a hydraulic equipment control system and forming method for elongated forming of blind hole parts, comprising a movable crossbeam arranged between an upper crossbeam and a lower crossbeam and sliding on four side beams, a multi-layer movable beam and a multi-layer mold device arranged in the movable crossbeam, a push rod assembly adapted to the multi-layer mold device and fixedly arranged on the lower end surface of the upper crossbeam, a rapid energy supply mechanism provided on the other side of a hydraulic press and providing energy for a hydraulic station, and a manipulator provided in front of the hydraulic press; the hydraulic station is supplied with oil and energy is supplemented by the rapid energy supply mechanism, and the movable crossbeam is lifted by the piston rod of a main oil cylinder, so that the blind hole parts can be pressed quickly, so as to achieve the purpose of elongated forming of the blind hole parts and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of elongation forming of blind hole parts, and in particular to a hydraulic equipment control system and a forming method for elongation forming of blind hole parts. Background Art

[0002] At present, with the development of modern science and technology, the traditional metal processing level can hardly meet the current product production needs, especially the processing of blind hole parts. Traditional blind hole parts are forged into round bar blanks by free forging, and then the inner hole is processed by machining, and then welded to the bottom of the blind hole by welding. This processing method is relatively rough, and the welding part is unstable, which is easy to produce inferior products. The traditional processing technology is difficult to meet the needs of current industrial production. Not only is the production efficiency low, the labor cost is high, but the product quality cannot be guaranteed. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to propose a hydraulic equipment control system and a forming method for elongating and forming blind hole parts.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A control system for hydraulic equipment for elongating and forming blind hole parts, including a hydraulic press, a mold device, a hydraulic station and an electrical cabinet. The hydraulic press includes an upper crossbeam, a side beam, a lower crossbeam, a column, a main oil cylinder and a movable crossbeam. There are four side beams, and the upper and lower ends of the four side beams are respectively connected to the upper crossbeam and the lower crossbeam. The column runs through the upper crossbeam, the side beam and the lower crossbeam. The lower end of the column is fixed to the ground by bolts. The lower crossbeam is penetrated by a main oil cylinder. There are two main oil cylinders. Support ear seats are fixedly arranged on both sides of the movable crossbeam. The movable end of the main oil cylinder is connected to the The support ear seat is connected, a hydraulic station and an electrical cabinet are arranged on one side of the hydraulic press, the hydraulic press is electrically connected to the electrical system of the electrical cabinet, the hydraulic station is electrically connected to the electrical cabinet and the hydraulic press, a movable beam is arranged between the upper beam and the lower beam, the movable beam is slidably arranged on the four side beams, the mold device is arranged in the movable beam, the lower end surface of the upper beam is fixedly provided with a push rod assembly adapted to the mold device, a fast energy supply mechanism for providing energy to the hydraulic station is arranged on the other side of the hydraulic press, and a manipulator is arranged in front of the hydraulic press;

[0006] The movable crossbeam comprises a top movable beam, a first movable beam, a second movable beam, a third movable beam, a fourth movable beam, and a bottom movable beam which are arranged in sequence and at intervals, and the top movable beam, the first movable beam, the second movable beam, the third movable beam, the fourth movable beam, and the bottom movable beam are all penetrated by U-shaped holes which are opened outward at the same position;

[0007] The mold device comprises a first mold device, a second mold device, a third mold device and a fourth mold device, and the first mold device, the second mold device, the third mold device and the fourth mold device are respectively and sequentially installed on the first layer movable beam, the second layer movable beam, the third layer movable beam and the fourth layer movable beam;

[0008] The mold device also includes a blank guide ring and a demoulding layer assembly. The blank guide ring is installed on the top movable beam, and the demoulding layer assembly is installed on the bottom movable beam.

[0009] Preferably, the top movable beam is provided with a circular mounting groove concentric with the U-shaped hole, and the blank guide ring is fixed in the circular mounting groove by bolts.

[0010] The U-shaped holes on the first-layer movable beam, the second-layer movable beam, the third-layer movable beam, the fourth-layer movable beam, and the bottom-layer movable beam are provided with U-shaped installation grooves concentric with the U-shaped holes.

[0011] The first mold device, the second mold device, the third mold device and the fourth mold device have the same structure, and all include a mold base, a drawing mold and a pressure ring. The mold base is fixedly installed in the U-shaped installation groove, the drawing mold is installed on the mold base, and the pressure ring fixes the drawing mold on the mold base through bolts; the mold base, the drawing mold and the pressure ring are all in the shape of a ring;

[0012] The demoulding layer assembly includes a demoulding base, a demoulding outer ring, a demoulding finger, and a finger brake plate. The demoulding base is installed in a U-shaped mounting groove of the bottom movable beam, the demoulding outer ring is fixedly installed on the demoulding base, and a demoulding finger is arranged in a ring inside the demoulding outer ring. The demoulding finger is elastically connected to the finger brake plate and corresponds one to one. The finger brake plate is fixed in a ring outside the demoulding outer ring.

[0013] Preferably, the demoulding finger extends into the demoulding outer ring in the original state, and the upper end surface of the demoulding finger extending into the demoulding outer ring has a rounded transition, and the lower end surface has a right-angle transition;

[0014] Preferably, the first movable beam, the second movable beam, the third movable beam and the fourth movable beam are respectively provided with fixing parts for fixing the first mold device, the second mold device, the third mold device and the fourth mold device, and the bottom movable beam is correspondingly provided with bottom fixing parts for fixing the demoulding layer assembly.

[0015] Preferably, the fixing member comprises an arc-shaped plate and a fixing plate, and the bottom fixing member comprises a bottom arc-shaped plate and a bottom fixing plate;

[0016] The fixing parts are respectively fixedly connected with the first layer movable beam, the second layer movable beam, the third layer movable beam and the fourth layer movable beam through bolts, and the bottom layer fixing parts are fixedly connected with the bottom layer movable beam through bolts.

[0017] Preferably, a slide-shaped discharge port is correspondingly arranged below the demoulding layer assembly, and the discharge port is fixedly arranged at the bottom of the movable crossbeam.

[0018] Preferably, the first mold device, the second mold device, the third mold device and the fourth mold device are all through holes inside and the apertures are continuously reduced, the blank guide ring and the demolding layer assembly are all through holes inside, the first mold device, the second mold device, the third mold device and the fourth mold device, the blank guide ring and the demolding layer assembly are all on the same center, and the aperture of the demolding layer assembly is larger than the aperture of the first mold device.

[0019] Preferably, the control system includes a hydraulic control system and a manipulator control system, the control system establishes a signal connection with the manipulator via network communication; the hydraulic control system establishes a signal connection with a rapid energy supply mechanism of the hydraulic station via network communication.

[0020] A forming method of a hydraulic equipment control system for elongating and forming blind hole parts as described above comprises the following steps:

[0021] S1: Clamp the blind hole blank onto the die device;

[0022] S2: drawing blind hole blank;

[0023] S3: The drawn blind hole blank is demoulded and slides out of the outlet;

[0024] S4: Finally, the robot grips the elongated blind hole blank and sends it to the next process.

[0025] The S2 also includes:

[0026] S21: First, the rapid energy supply mechanism acts on the hydraulic station, and the hydraulic station acts on the hydraulic press. The piston rod of the main oil cylinder of the hydraulic press lifts the movable crossbeam upward, and the blind hole blank passes through the first mold device, the second mold device, the third mold device and the fourth mold device in sequence under the pulling of the ejector assembly. The blind hole blank is continuously stretched downward in the longitudinal direction; the original cross-sectional area of ​​the blind hole blank is set to A 0 , the original billet length is L 0 , in the process of stretching, the volume is kept constant, then Among them A 1 ,A 2 ....A n It represents the cross-sectional area of ​​the blind hole blank after being drawn by the die device; L 1 , L 2 , L 3 ....L n It represents the length of the original blank after passing through each die; the blind hole blank has a length change after passing through each die, and the elongation ratio of the blank after passing through each die is set to: , which represents the ratio of the length of the blank after passing through the nth die to the length of the blank after passing through the n-1th die; the change in length is calculated as: which represents the total length L of the blank after passing through the nth die n , equal to the original length L 0 Multiply by the product of all elongation ratios from the first die to the nth die to get the final length; the calculation of the cross-sectional area change is: , indicating that the cross-sectional area A of the blank after passing through the nth die is calculated according to the volume conservation condition n , using the original cross-sectional area A 0 Divide by the product of all elongation ratios to obtain the final cross-sectional area;

[0027] The S3 further includes:

[0028] S31: When the blind hole blank passes through the demoulding fingers in the demoulding layer assembly and passes through the lower end surface of the demoulding layer assembly, the movable crossbeam stops running;

[0029] S32: After the drawing is completed, the main oil cylinder retreats, the movable crossbeam slides down, and the demoulding fingers arranged in the demoulding layer assembly clamp the upper end surface of the elongated blind hole blank; the elongated blind hole blank is separated from the ejector assembly and then falls out through the discharge port.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The present invention provides a hydraulic equipment control system and a forming method for elongating and forming blind hole parts. An automated drawing and forming operation mode is adopted for blind hole parts, which saves labor costs, improves production efficiency, and has good forming quality for blind hole parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the overall diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a three-dimensional structural diagram of the hydraulic press in the present invention;

[0034] Figure 3 It is a schematic cross-sectional view of the overall assembly of the ejector rod assembly, the mold device and the movable crossbeam in the present invention;

[0035] Figure 4 It is a three-dimensional diagram of the movable crossbeam in the present invention;

[0036] Figure 5 A stereoscopic diagram of a blank guide ring in the present invention;

[0037] Figure 6 It is a stereoscopic schematic diagram of the assembly of the mold device and the fixing parts in the present invention;

[0038] Figure 7 It is a cross-sectional view of the drawing die in the present invention;

[0039] Figure 8 It is a three-dimensional schematic diagram of the assembly of the demoulding layer assembly and the bottom fixing member in the present invention;

[0040] Fig. 9 It is a cross-sectional view of the demoulding layer assembly in the present invention;

[0041] Fig.10 It is the framework diagram of the control system of the present invention;

[0042] Fig.11 This is a flow chart of the blind hole blank pressing process of the present invention.

[0043] In the figure: 1, hydraulic press, 11, upper beam, 12, side beam, 13, lower beam, 14, column, 15, main cylinder, 16, movable beam,

[0044] 160, top movable beam, 161, first movable beam, 162, second movable beam, 163, third movable beam, 164, fourth movable beam, 165, bottom movable beam, 166, U-shaped mounting groove, 167, U-shaped hole, 168, circular mounting groove,

[0045] 17. ejector assembly, 18. discharge port, 19. support ear seat;

[0046] 2. Mould device,

[0047] 20. blank guide ring, 21. first die device, 22. second die device, 23. third die device, 24. fourth die device,

[0048] 2a, fixing piece, 2b, curved plate, 2c, fixing plate,

[0049] 25. Demolding layer assembly, 251. Demolding base, 252. Demolding outer ring, 253. Demolding finger, 254. Finger brake plate,

[0050] 25a, bottom fixing piece, 25b, bottom curved plate, 25c, bottom fixing plate,

[0051] 210, mold base, 211, drawing mold, 212, pressure ring,

[0052] 3. Robot, 4. Rapid energy supply mechanism, 5. Hydraulic station, 6. Electrical cabinet, 7. Blind hole blank. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in 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 creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0055] Example 1, please refer to Figure 1-Figure 2In the invention, a control system for a hydraulic device for elongating and forming blind hole parts is provided, comprising a hydraulic press 1, a mold device 2, a hydraulic station 5 and an electrical cabinet 6. The hydraulic press 1 comprises an upper crossbeam 11, a side beam 12, a lower crossbeam 13, a column 14, a main oil cylinder 15 and a movable crossbeam 16. There are four side beams 12, and the upper and lower ends of the four side beams 12 are respectively connected to the upper crossbeam 11 and the lower crossbeam 13. The column 14 passes through the upper crossbeam 11, the side beam 12 and the lower crossbeam 13. The lower end of the column 14 is fixed to the ground by bolts. A hydraulic station 5 and an electrical cabinet 6 are arranged on one side of the hydraulic press 1. The hydraulic press 1 is connected to the system in the electrical cabinet 6. Electrical connection, the hydraulic station 5 is electrically connected with the electrical cabinet 6 and the hydraulic press 1, a movable crossbeam 16 is arranged between the upper crossbeam 11 and the lower crossbeam 13, the movable crossbeam 16 is slidably arranged on the four side beams, the mold device 2 is arranged in the movable crossbeam 16, the lower end surface of the upper crossbeam 11 is fixedly provided with a push rod assembly 17 corresponding to the mold device 2, the lower crossbeam 13 is penetrated by a main oil cylinder 15, the other side of the hydraulic press 1 is provided with a fast energy supply mechanism 4 for providing energy to the hydraulic station, the front end of the hydraulic press is provided with a manipulator 3, and the manipulator 3 is installed with a sensor for sensing blind hole blanks.

[0056] The liquid or gas in the rapid energy supply mechanism 4 is communicated with the hydraulic station through a pipeline, so that the pressing operation can be realized in the working area in a short time, which saves more than half the time compared with the ordinary hydraulic system.

[0057] The hydraulic station is supplied with oil and supplemented with energy through the rapid energy supply mechanism 4, and the movable crossbeam 16 is lifted by the piston rod of the main oil cylinder, so that the pressing operation can be carried out quickly.

[0058] In this embodiment, the hydraulic press 1 is installed in a groove formed by the indentation of the foundation surface, the rapid energy supply mechanism 4, the hydraulic station 5 and the electrical cabinet 6 are installed on the surface of the foundation surface, the manipulator is installed on the surface of the foundation surface, and a ladder is provided in the groove formed by the indentation of the foundation surface for operators to go up and down conveniently.

[0059] Please continue to refer to Figure 3-Figure 6 In the embodiment, the movable crossbeam 16 includes a top movable beam 160, a middle movable beam, and a bottom movable beam 165 which are arranged in sequence and at intervals. The top movable beam 160, the middle movable beam, and the bottom movable beam 165 are all penetrated by a U-shaped hole 167 which opens outward at the same position;

[0060] The mold device 2 includes a blank guide ring 20, an intermediate layer mold device and a demolding layer assembly 25, wherein the intermediate layer mold device is respectively installed on the intermediate layer movable beam; the blank guide ring 20 is installed on the top layer movable beam, and the demolding layer assembly 25 is installed on the bottom layer movable beam.

[0061] There are one or more intermediate movable beams, which can be two or three layers. In this embodiment, there are four layers, which are the first movable beam 161, the second movable beam 162, the third movable beam 163, and the fourth movable beam 164. In this embodiment, there are four intermediate molds, which are the first mold device 21, the second mold device 22, the third mold device 23, and the fourth mold device 24 corresponding to the intermediate movable beams. The first mold device 21, the second mold device 22, the third mold device 23, and the fourth mold device 24 are respectively installed on the first movable beam 161, the second movable beam 162, the third movable beam 163, and the fourth movable beam 164.

[0062] The upper end surface of the top movable beam 160 is provided with a circular mounting groove 168 which is concentric with the arc portion of the U-shaped hole 167; the first movable beam 161, the second movable beam 162, the third movable beam 163, the fourth movable beam 164 and the bottom movable beam 165 are all provided with a U-shaped mounting groove 166 which is concentric with the U-shaped hole 167; the top movable beam 160, the first movable beam 161, the second movable beam 162, the third movable beam 163, the fourth movable beam 164 and the bottom movable beam 165 are all fixedly arranged inside the movable cross beam 16 and move up and down with the movable cross beam 16.

[0063] The first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 are respectively installed in the U-shaped installation grooves 166 on the first layer movable beam 161, the second layer movable beam 162, the third layer movable beam 163 and the fourth layer movable beam 164 in sequence.

[0064] The blank guide ring 20 is installed in the circular installation groove 168 of the top movable beam, and the demoulding layer assembly 25 is installed in the U-shaped installation groove 166 of the bottom movable beam.

[0065] In this embodiment, the movable beam is closed on three sides in the height direction, and the opening direction of the U-shaped hole is the opening direction of the movable beam. The top movable beam 160 is on the upper end surface of the movable beam, and the bottom movable beam 165 is on the lower end surface of the movable beam. The installation distances between the top movable beam 160, the first movable beam 161, the second movable beam 162, the third movable beam 163, the fourth movable beam 164 and the bottom movable beam 165 are respectively determined by the heights of the blank guide ring 20, the first mold device 21, the second mold device 22, the third mold device 23, the fourth mold device 24 and the demolding layer assembly 25, which can maintain both a suitable gap and the drawing and forming of the blind hole blank 7.

[0066] The opening and the inner wall of the blank guide ring 20 are inclined to facilitate the sliding of the blind hole blank. A convex ring is arranged on the outside of the blank guide ring 20. During installation, the convex ring on the outside of the blank guide ring 20 is adapted to the circular installation groove 168, and then the convex ring is fixed in the circular installation groove 168 by bolts. The blank guide ring 20 will be fixed in the circular installation groove 168 on the top movable beam 160. After installation, the blank guide ring 20 is inserted through the top movable beam 160.

[0067] The first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 have the same structure, and all include a mold base 210, a drawing mold 211 and a pressure ring 212. The mold base 210 is fixedly installed in the U-shaped installation groove 166, the drawing mold is installed on the mold base 210, and the pressure ring 212 fixes the drawing mold 211 on the mold base 210 by bolts.

[0068] The first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 are specifically installed as follows: first, the mold base 210 is installed in the U-shaped installation groove 166 by bolts, and then the drawing mold 211 is installed on the mold base 210 by bolts, and then the drawing mold 211 is tightly fixed on the mold base 210 by bolts using the pressure ring 212, and the arc portion of the U-shaped installation groove 166 abuts against the edge of the mold base 210, so that the mold base 210 cannot move left and right. The U-shaped installation groove 166 plays a role in fixing the mold base 210, the position of the mold base 210 is fixed, and the position of the drawing mold 211 is also fixed.

[0069] In the present embodiment, the upper end face and the inner wall of each layer of the drawing die 211 are both inclined, the middle part of the inner wall of the drawing die 211 is a slightly convex arc, and the aperture of each layer of the die is continuously reduced. Because the blind hole blank 7 will be preheated when entering the blank guide ring 20 to make it plastic, it can gradually pass through each layer of the die and be continuously stretched. In order to make the drawing die 211 more stable, a pull ring sleeve can be provided outside the drawing die 211, and then a small pressure ring is used to press the drawing die 211 and the pull ring sleeve at the same time, and then the small pressure ring is fixed with bolts, and finally the small pressure ring is pressed with a pressure ring 212, and then the pressure ring 212 is fixed to the die base 210 by bolts.

[0070] Example 3, please continue to refer to Figure 7-Figure 8In the figure, the demoulding layer assembly 25 includes a demoulding base 251, a demoulding outer ring 252, a demoulding finger 253, and a finger brake plate 254. The demoulding base 251 is installed in the U-shaped mounting groove 166 of the bottom movable beam, and the demoulding outer ring 252 is fixedly installed on the demoulding base 251. The demoulding outer ring 252 is annularly provided with a demoulding finger 253 inside. The demoulding finger 253 corresponds to the finger brake plate 254 one by one. A spring connection is provided between the demoulding finger 253 and the finger brake plate 254. The original position of the demoulding finger 253 is to extend into the interior of the demoulding outer ring 252.

[0071] In this embodiment, the demoulding base 251 is also installed in the U-shaped mounting groove 166 of the bottom movable beam by bolts. The inner arc of the U-shaped mounting groove 166 and the outer arc of the demoulding base 251 are adapted to counteract each other, so that the demoulding base 251 can be fixed in the U-shaped mounting groove 166. The demoulding outer ring 252 is installed on the demoulding base 251 by bolts. The inner ring of the demoulding outer ring is provided with a sliding groove, and the sliding groove is provided with a demoulding finger. The demoulding finger corresponds to each finger brake plate 254 one by one. When the blind hole blank 7 is stretched to the lower end of the demoulding base 251 by the ejector assembly 17, the movable crossbeam stops running. Because the upper end surface of the demoulding finger 253 is rounded, the demoulding finger 253 and the finger brake plate 254 are not connected. The plate 254 is elastically connected. When the demoulding fingers 253 are squeezed, the demoulding fingers 253 will each move toward the corresponding finger brake plate 254, and the blind hole blank 7 can be squeezed into the interior of the demoulding outer ring 252 along this fillet until the blind hole blank 7 passes through the demoulding outer ring 252 completely; when the movable crossbeam slides downward, the upper end surface of the blind hole blank 7 is supported by the lower end surface of the demoulding fingers 253. Because the lower end surface of the demoulding fingers 253 is a right-angle transition, the demoulding fingers 253 will not move too much and will also support the upper end surface of the blind hole blank 7, so that the blind hole blank 7 moves opposite to the ejector assembly 17, and the demoulding fingers 253 will remove the blind hole blank 7 from the ejector assembly 17.

[0072] The first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 are all through holes inside, the blank guide ring 20 and the demolding layer assembly 25 are all through holes inside, the first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24, the blank guide ring 20, and the demolding layer assembly 25 are all on the same center, and the aperture of the demolding layer assembly is larger than the aperture of the first mold device.

[0073] The length of the ejector assembly 17 is adapted to the height of the mold device, and can stretch the blind hole blank 7 from the uppermost blank guide ring 20 to the lower end surface of the demolding layer assembly 25 .

[0074] Example 4, please refer to Figure 6 and Figure 8The first movable beam 161, the second movable beam 162, the third movable beam 163, and the fourth movable beam 164 are correspondingly provided with fixing parts 2a for fixing the first mold device 21, the second mold device 22, the third mold device 23, and the fourth mold device 24, and the bottom movable beam 165 is correspondingly provided with bottom fixing parts 25a for fixing the demoulding layer assembly 25;

[0075] The fixing member 2a includes an arc-shaped plate 2b and a fixing plate 2c, and the bottom fixing member 25a includes a bottom arc-shaped plate 25b and a bottom fixing plate 25c;

[0076] The fixing member 2a is fixedly connected to the first layer movable beam 161, the second layer movable beam 162, the third layer movable beam 163, and the fourth layer movable beam 164 through bolts, and the bottom layer fixing member 25a is fixedly connected to the bottom layer movable beam 165 through bolts.

[0077] In this embodiment, the first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 are all against the mold base 210 through the arc plate 2b. Because the arc surface of the arc plate 2b can just match the curvature of the mold base 210, the height of the arc plate 2b is adapted to the height of the mold base 210, and the width of the arc plate 2b is adapted to the distance between the two groove edges of the U-shaped mounting groove, so the mold base 210 can be well fixed, and then the arc plate 2b is fixed to the movable beam with bolts, and finally the fixed plate 2c and the arc plate 2b are fastened with bolts. Because the height of the fixed plate 2c is higher than the height of the arc plate 2b, the fixed plate 2c can be fixed to the end of the movable beam with bolts, the upper part of the fixed plate 2c is bolted to the arc plate 2b, and the lower part of the fixed plate 2c is bolted to the middle layer movable beam.

[0078] Similarly, the demoulding base 251 in the demoulding layer assembly 25 is supported by the bottom arc plate 25b, and the bottom arc plate 25b is fixed in the U-shaped mounting groove on the bottom movable beam 165 by bolts. Finally, the bottom arc plate 25b and the demoulding base 251 are tightly pressed together by the bottom fixing plate 25c, and the bolts are passed through the bottom fixing plate 25c and threadedly connected to the bottom arc plate 25b. Finally, the bottom fixing plate 25c is fixedly connected to the end of the bottom movable beam 165 by bolts.

[0079] The bottom fixing plate 25c can connect the bottom arc plate 25b and the bottom movable beam 165 at the same time, so the bottom arc plate 25b can be fixed to the bottom movable beam while the demoulding layer assembly 25 can also be well fixed on the bottom movable beam.

[0080] In Example 5, a slide-shaped discharge port 18 is fixedly disposed below the demoulding layer assembly 25 . The discharge port 18 is fixedly disposed at the bottom of the movable crossbeam and is disposed corresponding to the bottom of the demoulding layer assembly 25 .

[0081] In this embodiment, the end of the discharge port 18 is in a closed state, so that when the pressed blind hole blank slides into the discharge port 18, the robot can clamp the blind hole blank to the next process.

[0082] Example 6, please refer to Fig.10 The control system also includes a hydraulic control system and a manipulator control system. The control system establishes a signal connection with the manipulator through network communication; the hydraulic control system establishes a signal connection with the hydraulic station fast energy supply mechanism 4 through network communication. The manipulator control system includes a signal input module, a signal processing module and a signal output module.

[0083] In this embodiment, the hydraulic control system is used to control the lifting and retraction of the main oil cylinder, and also controls the pressurization of the accumulator. The accumulator can ensure that the pressure of the entire system is within a normal range. When the system requires pressure, the accumulator can quickly release energy to ensure that the main oil cylinder has sufficient pressure; the manipulator control system can control the movement of the manipulator. When it is necessary to clamp the blind hole blank, the sensor installed on the manipulator senses the blind hole blank, the sensor transmits a signal, the signal input module receives the signal, and the signal is processed by the signal processing module. The signal output module outputs the signal, and the manipulator control system controls the manipulator to clamp the blind hole blank.

[0084] Example 7, please refer to Fig.10 A forming method of a hydraulic equipment control system for elongating and forming blind hole parts as described above, comprising: firstly making a blind hole blank 7; then ensuring that all equipment operates normally; and also comprising the following steps:

[0085] S1: Clamp the blind hole blank 7 onto the mold device 2;

[0086] S2: drawing blind hole blank 7;

[0087] S3: demoulding the drawn blind hole blank 7 and sliding it out from the discharge port 18;

[0088] S4: Finally, the robot 3 clamps the elongated blind hole blank 7 to the next process.

[0089] In this embodiment, the production of the blind hole blank specifically includes:

[0090] First, the prefabricated blank is processed and chamfered on a lathe, then transported by a forklift for heating. The blank is preheated to 750℃-850℃, and then forged and punched by a punch to obtain a blind hole blank.

[0091] In this embodiment, the diameter of the punch is expressed by the calculation formula: Among them, D 冲压 Represents the diameter of the punch; F 冲压 Represents the required punching force, that is, the pressure exerted by the punch on the material during the punching process; σ y represents the yield strength of the material, that is, the stress at which the material begins to undergo permanent deformation, and π is the circumference of a circle. In this embodiment, the detailed implementation of the above calculation formula can be realized by the following relevant data: Set the required punching force F 冲压 is 200,000 Newtons (N), which is an example value that indicates the force that the punch needs to apply during the punching process. The yield strength of the material σ y is 350 megapascals (MPa) or 350,000,000 pascals (Pa), which is the stress value at which the material begins to permanently deform. These data are used to calculate the punch diameter:

[0092] 1. First calculate the ratio of the impulse force to the yield strength and divide it by pi:

[0093] , substitute the numerical value,

[0094] ,

[0095] 2. Then take the square root of the ratio to calculate the diameter of the punch:

[0096] ,

[0097] 3. Convert the result to millimeters if necessary:

[0098] .

[0099] The S2 also includes:

[0100] S21: First, the rapid energy supply mechanism acts on the hydraulic station, and the hydraulic station acts on the hydraulic press. The piston rod of the main oil cylinder of the hydraulic press lifts the movable crossbeam upward, and the blind hole blank passes through the first mold device, the second mold device, the third mold device and the fourth mold device in sequence under the pulling of the ejector assembly. The blind hole blank is continuously stretched downward in the longitudinal direction; the original area of ​​the blind hole blank is set to A 0 , the original billet length is L 0 , in the process of stretching, the volume is kept constant, then , where A 1 ,A 2 ....A n It represents the cross-sectional area of ​​the blind hole blank after being drawn by the die device; L 1 , L 2,....L n It represents the length of the original blank after passing through each die. The blind hole blank has a length change after passing through each die. The elongation ratio of the blank after passing through each die is set as: , which represents the length L of the blank after passing through the nth die n and the length L of the blank after passing through the n-1th die n -1 ratio;

[0101] The change in length is calculated as: , which represents the total length L of the blank after passing through the nth die n , with the original length L 0 Multiply by the product of all elongation ratios from the first die to the nth die to get the final length;

[0102] In this embodiment, the original length of the blank is set to L 0 =1000 mm, after each mold elongation ratio, assuming there are 3 molds, set their elongation ratios as follows: 1 =1.1,λ 2 =1.05,λ 3 =1.08, substitute these values ​​into the formula to calculate the total length L n :

[0103] ,,

[0104] ,,

[0105] ,,

[0106]

[0107] In this embodiment, according to the data of these settings, after passing through three dies, the total length of the blank increases by approximately 24.74%, and the final length is approximately 1247.4 mm.

[0108] Continuing on the basis of the above example, the calculation of the cross-sectional area change is:

[0109] , indicating that the cross-sectional area A of the blank after passing through the nth die is calculated according to the volume conservation condition n , using the original cross-sectional area A 0 Divide by the product of all elongation ratios to obtain the final cross-sectional area, λ i is the elongation ratio of the blank in the i-th drawing step; In this embodiment, the original area A is set 0 =100 square millimeters, the elongation ratio of the blank after passing through the first die λ 1=1.2; elongation ratio λ after the second die 2 =1.1, substitute the data into the above formula to calculate the cross-sectional area A after passing through the two dies 2 : , first calculate λ 1 ×λ 2 =1.2×1.1=1.32, the final calculation: In this embodiment, this result is only used as a data point of the patent embodiment. If more embodiments are needed, more original cross-sectional areas and mold elongation ratios can be provided, and then the same formula can be used for calculation.

[0110] Based on the above embodiment, the step in S3 further includes:

[0111] S31: When the blind hole blank 7 passes through the demoulding layer assembly 25, the movable crossbeam 16 stops running;

[0112] S32: After the drawing is completed, the main oil cylinder 15 retreats, the movable crossbeam 16 slides down, and the demoulding fingers 253 provided in the demoulding layer assembly 25 clamp the upper end surface of the elongated blind hole blank; the elongated blind hole blank is separated from the ejector assembly 17 and then falls out through the discharge port 18.

[0113] The working principle of the present invention is as follows: the manipulator control system is first started, the manipulator 3 transfers the blind hole blank 7 to the blank guide ring 20, the hydraulic control system is started, and the accumulator acts on the hydraulic station 5. The accumulator is an energy storage device in the hydraulic pneumatic system. It converts the energy in the system into compression energy or potential energy and stores it at the appropriate time. When the system needs it, it converts the compression energy or potential energy into hydraulic or air pressure energy and releases it to replenish the system. When the system pressure increases instantly, it can absorb this part of the energy to ensure that the pressure of the entire system is normal. At this time, the two main oil cylinders lift the movable beam, the movable crossbeam 16 rises, and the mold device 2 in the movable crossbeam 16 will also rise. The push rod assembly 17 pulls the blind hole blank 7 downward, and the blind hole blank 7 passes through the first mold device 21, the second mold device 22, the third mold device 23 and the fourth mold device 24 in turn, and will be continuously stretched. When the blind hole blank 7 passes through the demolding layer assembly 25, it will squeeze the demolding finger 253, and the demolding finger 253 moves toward the finger brake plate 25 4, until the upper end surface of the blind hole blank 7 moves to the lower end of the demoulding layer assembly 25, and the demoulding finger 253 is restored under the action of the spring; at this time, the main cylinder 15 returns, driving the movable crossbeam 16 to move downward, and when the movable crossbeam slides downward, the push rod assembly 17 moves upward relatively, and the blind hole blank 7 is separated from the push rod assembly 17 under the action of the demoulding finger 253, and falls out along the discharge port 18. At this time, the robot 3 moves the elongated blind hole blank 7 to the next process.

[0114] In all embodiments of the present invention, the installation height of each layer of movable beams of the equipment is flexible and not fixed, that is, the corresponding mold device can be replaced according to the size of the blank, and the mold of the corresponding size can be set according to the thickness and depth of the blank.

[0115] 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. A control system for a hydraulic device for elongating and forming blind hole parts, comprising a hydraulic press (1), a hydraulic station (5) and an electrical cabinet (6), wherein the hydraulic press (1) comprises an upper crossbeam (11), a side beam (12), a lower crossbeam (13), a column (14), a main oil cylinder (15) and a movable crossbeam (16), wherein the side beams (12) are four, and the upper and lower ends of the four side beams (12) are respectively connected to the upper crossbeam (11) and the lower crossbeam (13), and the column (14) penetrates the upper crossbeam (11), the side beams (12) and the lower crossbeam (13). The lower cross beam (13) and the lower ends of the columns (14) are fixed to the ground by bolts. A main oil cylinder (15) is provided through the lower cross beam (13). The main oil cylinders (15) are two and symmetrically arranged. Support ear seats (19) are fixedly arranged on both sides of the movable cross beam (16). The movable ends of the main oil cylinders (15) are threadedly connected to the support ear seats (19). A hydraulic station (5) and an electrical cabinet (6) are provided on one side of the hydraulic press (1). The hydraulic station (5) is connected to the electrical cabinet (6) and the hydraulic press (1). Electrical connection is made, a fast energy supply mechanism (4) for providing energy to the hydraulic station is arranged on the other side of the hydraulic press (1), and a manipulator (3) is arranged in front of the hydraulic press; a movable crossbeam (16) is arranged between the upper crossbeam (11) and the lower crossbeam (13), and the movable crossbeam (16) is slidably arranged on the four side beams, and a push rod assembly (17) adapted to the mold device (2) is fixedly arranged on the lower end surface of the upper crossbeam (11), and the mold device (2) is arranged inside the movable crossbeam (16). The mold device (2) comprises a blank guide ring (20), an intermediate layer mold device and a demolding layer assembly (25); the intermediate layer mold comprises a first mold device (21), a second mold device (22), a third mold device (23) and a fourth mold device (24); the first mold device (21), the second mold device (22), the third mold device (23) and the fourth mold device (24) have the same structure and all comprise a mold base (210), a drawing mold (211) and a pressure ring (212). The first mold device (21), the second mold device (22), the third mold device (23) and the fourth mold device (24) are all through holes with their apertures getting smaller and smaller; the blank guide ring (20) and the demoulding layer assembly (25) are all through holes; the first mold device (21), the second mold device (22), the third mold device (23) and the fourth mold device (24), the blank guide ring (20) and the demoulding layer assembly (25) are all centered on the same circle; the aperture of the demoulding layer assembly (25) is larger than the aperture of the first mold device (21); A slide-shaped discharge port (18) is correspondingly arranged below the demoulding layer assembly (25), and the discharge port (18) is fixedly arranged at the bottom of the movable crossbeam (16); It also includes a hydraulic control system and a manipulator control system, wherein the control system establishes a signal connection with the manipulator (3) via network communication; the hydraulic control system establishes a signal connection with the hydraulic station rapid energy supply mechanism (4) via network communication, and is characterized in that: The movable crossbeam (16) comprises a top movable beam (160), a middle movable beam, and a bottom movable beam (165) which are arranged in sequence at intervals, and the top movable beam (160), the middle movable beam, and the bottom movable beam (165) are all penetrated by U-shaped holes (167) which are opened outward at the same position; The intermediate layer movable beam comprises a first layer movable beam (161), a second layer movable beam (162), a third layer movable beam (163), and a fourth layer movable beam (164); the top layer movable beam (160) is provided with a circular mounting groove (168) concentric with the U-shaped hole (167); and the blank guide ring (20) is fixed in the circular mounting groove (168) by means of bolts; The U-shaped holes (167) on the first-layer movable beam (161), the second-layer movable beam (162), the third-layer movable beam (163), the fourth-layer movable beam (164), and the bottom-layer movable beam (165) are provided with U-shaped installation grooves (166) concentric with the U-shaped holes (167) on their peripheries; The intermediate layer mold devices are respectively mounted on the intermediate layer movable beams; the blank guide ring (20) is mounted on the top layer movable beam (160); and the demoulding layer assembly (25) is mounted on the bottom layer movable beam (165); The die base (210) is fixedly mounted in the U-shaped mounting groove (166), the drawing die (211) is mounted on the die base (210), and the pressure ring (212) fixes the drawing die (211) on the die base via bolts; The demoulding layer assembly (25) comprises a demoulding base (251), a demoulding outer ring (252), a demoulding finger (253), and a finger brake plate (254); the demoulding base (251) is installed in a U-shaped installation groove (166) of the bottom movable beam; the demoulding outer ring (252) is fixedly installed on the demoulding base (251); a demoulding finger (253) is arranged in an annular shape inside the demoulding outer ring (252); the demoulding finger (253) is slidably arranged in the demoulding outer ring (252); the demoulding finger (253) and the finger brake plate (254) are elastically connected and correspond one to one; the finger brake plate (254) is annularly fixed outside the demoulding outer ring (252); The demoulding finger (253) extends into the demoulding outer ring (252) in an initial state, wherein the upper end surface of the demoulding finger (253) extending into the demoulding outer ring (252) has a rounded transition, and the lower end surface has a right-angle transition; The interior of the drawing die (211) is a slightly convex arc surface.

2. According to claim 1, a hydraulic equipment control system for elongating and forming blind hole parts, characterized in that: The first layer movable beam (161), the second layer movable beam (162), the third layer movable beam (163), and the fourth layer movable beam (164) are respectively provided with fixing parts (2a) for fixing the first mold device (21), the second mold device (22), the third mold device (23), and the fourth mold device (24); and the bottom layer movable beam (165) is correspondingly provided with a bottom layer fixing part (25a) for fixing the demoulding layer assembly (25); The fixing member (2a) comprises an arc-shaped plate (2b) and a fixing plate (2c), and the bottom fixing member (25a) comprises a bottom arc-shaped plate (25b) and a bottom fixing plate (25c); The fixing member (2a) is fixedly connected to the first layer movable beam (161), the second layer movable beam (162), the third layer movable beam (163), and the fourth layer movable beam (164) respectively by bolts, and the bottom layer fixing member (25a) is fixedly connected to the bottom layer movable beam (165) by bolts.

3. A method for forming a hydraulic equipment control system for elongating blind hole parts according to any one of claims 1 to 2, comprising the following steps: First, make the blind hole blank. S1: Clamp the blind hole blank (7) onto the die device (2); during drawing, first, the rapid energy supply mechanism acts on the hydraulic station, and the hydraulic station acts on the hydraulic press, so that the piston rod of the main oil cylinder (15) of the hydraulic press lifts the movable crossbeam (16) upward. S2: drawing the blind hole blank (7), wherein the blind hole blank (7) passes through the first die device (21), the second die device (22), the third die device (23) and the fourth die device (24) in sequence under the pulling of the ejector assembly (17), and the blind hole blank is continuously stretched downward in the longitudinal direction; S3: demoulding the drawn blind hole blank and sliding it out from the discharge port (18); when the blind hole blank (7) passes through the demoulding finger (253) in the demoulding layer assembly (25) and passes through the lower end surface of the demoulding layer assembly (25), the movable crossbeam stops running; after the drawing is completed, the main cylinder (15) retracts, the movable crossbeam (16) slides down, and the demoulding finger (253) provided in the demoulding layer assembly (25) clamps the upper end surface of the elongated blind hole blank; the elongated blind hole blank is separated from the ejector assembly (17) and then falls out through the discharge port (18); S4: Finally, the robot (3) clamps the elongated blind hole blank (7) to the next process; The S2 is characterized in that it also includes: S21: Set the original cross-sectional area of ​​the blind hole blank to A0, the original blank length to L0, and keep the volume conservation unchanged during the elongation process, then we have , where A1, A2....A n It represents the cross-sectional area of ​​the blind hole blank after being drawn by the die device; L1, L2....L n It represents the length of the original blank after passing through each die; the elongation ratio of the blank after passing through each die is set to: , It represents the ratio of the length of the blank after passing through the nth die to the length of the blank after passing through the n-1th die. The change in length is calculated as: , which represents the total length L of the blank after passing through the nth die n , which is equal to the original length L0 multiplied by the product of all elongation ratios from the first die to the nth die, to obtain the final length; the calculation of the cross-sectional area change is: , indicating that the cross-sectional area A of the blank after passing through the nth die is calculated according to the volume conservation condition n , divide the original cross-sectional area A0 by the product of all elongation ratios to obtain the final cross-sectional area.

Images