Integrated high-pressure oil cylinder, multi-station milling fixture and processing method

Abstract

The present invention relates to the technical field of hydraulic equipment, and specifically to an integrated high-pressure oil cylinder, a multi-station milling fixture and a processing method, wherein the integrated high-pressure oil cylinder comprises a cylinder body, a motor connected to the outer wall of the cylinder body and a movable part arranged in the cylinder body; the movable part comprises a piston sealingly and slidably arranged in the cylinder body and a piston rod connected to the piston, the piston rod is sealingly and slidably connected to an end of the cylinder body away from the motor, and the piston divides the interior of the cylinder body into a rod chamber and a rodless chamber; the rod chamber and the rodless chamber are respectively connected to a second oil port and the first oil port arranged on the cylinder body, ultimately, it can avoid mechanical collision between the piston and the cylinder wall when reaching the terminal, thereby generating impact pressure and noise, and can effectively prevent damage to the cylinder itself and related system heavy piping, valves, instruments and other components due to impact and collision, thereby improving the performance of the cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment, in particular to an integrated high-pressure oil cylinder, a multi-station milling fixture and a processing method. Background Art

[0002] The oil cylinder can convert the pressure energy of hydraulic oil into mechanical energy, thereby driving the actuator in the hydraulic system to work. In the hydraulic system, the oil cylinder is usually used in conjunction with components such as hydraulic pumps and hydraulic motors to achieve the transmission and conversion of hydraulic power.

[0003] During operation, driven by pressure, the piston rod will have a large momentum. When the piston rod reaches the end, the piston often mechanically collides with the cylinder head and the bottom of the cylinder and stops. Some hydraulic cylinders with simpler structures lack buffer devices or the design of the buffer devices causes the piston to collide when it reaches the end of the stroke.

[0004] In order to prevent the piston from colliding with the cylinder head at the end of the stroke, causing noise and impact, most hydraulic cylinders are generally equipped with a buffer device. The working principle of this device is to use the piston or cylinder barrel to seal part of the oil between the piston and the cylinder head when it moves to the end of the stroke, forcing it to squeeze out from the small hole or slit to generate a large resistance, thereby reducing the setting and eliminating the impact.

[0005] High-pressure cylinders are different from ordinary hydraulic cylinders. Since the pressure of the hydraulic oil is relatively high, the corresponding hydraulic cylinder operating conditions are generally high-load environments. Under high-load and strong hydraulic environments, the piston is driven to move in the cylinder, and the pressure of the hydraulic oil acts on the piston. The stress dispersion problem often causes connection failure, stress yield, deformation, and even collapse between the piston and the piston rod; and the power requirements for the oil pump are relatively high. Summary of the invention

[0006] The object of the present invention is to provide an integrated high-pressure oil cylinder, a multi-station milling fixture and a processing method to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An integrated high-pressure oil cylinder comprises a cylinder body, a motor connected to the outer wall of the cylinder body, and a movable part arranged in the cylinder body;

[0009] The movable part comprises a piston sealingly and slidably arranged in the cylinder body and a piston rod connected to the piston, the piston rod is sealingly and slidably connected to an end of the cylinder body away from the motor, and the piston divides the interior of the cylinder body into a rod chamber and a rodless chamber;

[0010] The rod chamber and the rodless chamber are respectively connected to a second oil port and a first oil port provided on the cylinder body, and the motor is used to pump oil into the cylinder body through the first oil port and the second oil port so that the piston and the piston rod move along the axial direction of the cylinder body;

[0011] A group of elastic buffers is respectively arranged in the rod cavity and the rodless cavity. When the piston reaches the end point of the movement stroke, it can cooperate with one group of the elastic buffers.

[0012] As a further solution of the present invention: the elastic buffer comprises a buffer plug sealingly and slidably arranged in the rodless cavity and a buffer spring arranged in the rodless cavity, one end of the buffer spring is connected to the inner wall of the cylinder body, and the other end is connected to the side of the buffer plug away from the piston, two guide protrusions are formed on the outer wall of the buffer plug, and two guide grooves adapted to the guide protrusions are provided on the inner wall of the cylinder body;

[0013] Among them, a first conical protrusion is formed on the side of the buffer plug close to the piston, and a second conical protrusion is provided on each side of the piston. The second conical protrusion abuts against the first conical protrusion, and an annular chamber is formed between the two. The first oil port is located between the first conical protrusion and the second conical protrusion.

[0014] A multi-station fixture for milling the integrated high-pressure oil cylinder comprises a plurality of supports arranged side by side, and further comprises:

[0015] A receiving plate is movably arranged on the support, used for receiving the oil cylinder to form a placement position for placing the oil cylinder, and the support is provided with a positioning mechanism for pre-clamping the oil cylinder located at the placement position, and the receiving plate is connected to a jacking mechanism installed at the bottom of the support;

[0016] A fastening mechanism is installed on the support, and a group is provided on each side of the positioning mechanism. The fastening mechanism can perform a clamping and fastening action on the pre-clamped cylinder, and the fastening mechanism is connected to the jacking mechanism through a transmission mechanism. The jacking mechanism is triggered when the fastening mechanism releases the fastening state of the cylinder, and can drive the receiving plate to lift the cylinder. At the same time, the transfer mechanism arranged on the side of the support can transfer the cylinder located on the receiving plate.

[0017] As a further solution of the present invention: the positioning mechanism includes a frame body arranged on the support and multiple groups of pre-tightening structures arranged on the frame body, and the multiple groups of pre-tightening structures are equidistantly distributed along the circumference, and include two connecting columns slidably arranged on the frame body, a positioning plate connected to the two connecting columns, and two first cylindrical springs respectively mounted on the outer periphery of the two connecting columns, the two ends of the first cylindrical spring are respectively connected to the inner wall of the frame body and the positioning plate, and the side of the positioning plate away from the connecting column is provided with an inclined surface and a vertical surface.

[0018] As a further solution of the present invention: the fastening mechanism includes a guide rod arranged on the support, a sleeve slidably engaged with the guide rod, and a first clamping member connected to the sleeve. A first electric push rod is also installed on the support. The sleeve is fixed to the movable end of the first electric push rod. The movable end of the first electric push rod is also connected to a drive tube, and the drive tube is connected to the transmission mechanism.

[0019] As a further solution of the present invention: the lifting mechanism includes two guide cylinders arranged at the bottom of the support and two vertical rods respectively connected to the two guide cylinder sliding sleeves and connected to the receiving plate;

[0020] The vertical rod is connected to a ring body slidably arranged in the guide cylinder, and a second cylindrical spring is sleeved on the outer periphery of the vertical rod, and two ends of the second cylindrical spring are respectively connected to the inner wall of the guide cylinder and the ring body.

[0021] As a further solution of the present invention: the transmission mechanism includes a driven shaft rotatably mounted on the support and slidably sleeved with the driving tube, an incomplete ratchet rotatably mounted at the bottom of the support, and a ratchet plate fixedly arranged between the two vertical rods and matched with the incomplete ratchet, and the driven shaft is connected to the rotating shaft of the incomplete ratchet through a transmission belt;

[0022] Among them, a boss is provided on the inner wall of the driving tube, and a transmission groove adapted to the boss is provided on the outer wall of the driven shaft, and the transmission groove includes a first slide groove, a second slide groove, a third slide groove, a fourth slide groove and a fifth slide groove which are connected to each other. The first slide groove, the third slide groove and the fifth slide groove are arranged along the axial direction of the driven shaft, and the second slide groove and the fourth slide groove are arranged along the spiral on the driven shaft.

[0023] As a further solution of the present invention: the transfer mechanism includes a horizontal axis rotatably mounted on the bottom of the support and two sets of deflection structures arranged on the horizontal axis, and a driving motor is also installed at the bottom of the support, and the output end of the driving motor is connected to the horizontal axis;

[0024] The deflection structure comprises two connecting arms installed on the transverse axis, two second electric push rods installed at one end of the connecting arms away from the transverse axis, and a second clamping member connecting the movable ends of the two second electric push rods.

[0025] A method for machining an integrated high-pressure oil cylinder using a multi-station fixture for milling the integrated high-pressure oil cylinder comprises the following steps:

[0026] Step 1: Place the oil cylinder to be processed in the frame, so that the oil cylinder is placed on the receiving plate, and the oil cylinder is pre-clamped by the positioning mechanism;

[0027] Step 2: The fastening mechanism clamps the oil cylinder for a second time, and then starts milling the oil cylinder;

[0028] Step 3: After the milling process is completed, the fastening mechanism releases the oil cylinder, the transmission mechanism drives the lifting mechanism to be triggered, and the lifting mechanism drives the receiving plate to lift the oil cylinder, so that the oil cylinder is separated from the positioning mechanism;

[0029] Step 4: The transfer mechanism works to transfer the oil cylinder on the receiving plate, and the receiving plate moves down and resets after the fastening mechanism is reset.

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

[0031] The setting of the conical protrusion makes the contact area between the conical protrusion and the oil larger during the oil pumping process, and the conical surface can have a certain gathering effect on the thrust of the oil, so that the stress is concentrated on the piston rod. Therefore, the stability of the movement of the piston and the piston rod can be improved and the load on the oil pump can be reduced.

[0032] The conical protrusion is arranged to contact the elastic buffer part located in the rod cavity, so as to prompt the buffer plug to move, which can effectively buffer the piston and avoid mechanical contact and collision between the piston and the cylinder wall when the piston reaches the terminal. It can effectively prevent damage to the cylinder itself and related system components such as piping, valves, instruments, etc. caused by impact and collision, thereby improving the performance of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of an embodiment of an integrated high-pressure oil cylinder.

[0034] Figure 2 This is a schematic structural diagram of an embodiment of an integrated high-pressure oil cylinder from another angle.

[0035] Figure 3 A side view of an embodiment of an integrated high-pressure cylinder.

[0036] Figure 4 for Figure 3 Cross-section view along the AA direction.

[0037] Figure 5 This is a structural explosion diagram of an embodiment of an integrated high-pressure oil cylinder.

[0038] Figure 6 The figure is a schematic structural diagram of an embodiment of a multi-station milling fixture.

[0039] Figure 7 This is a schematic structural diagram of another angle of an embodiment of a multi-station milling fixture.

[0040] Figure 8 for Figure 6 A magnified view of the structure at center.

[0041] Fig. 9 The figure is a partial structural diagram of an embodiment of a multi-station milling fixture.

[0042] Fig.10 for Fig. 9 Schematic diagram of the structure from another angle.

[0043] Fig.11 This is a structural exploded diagram of the jacking mechanism in one embodiment of a multi-station milling fixture.

[0044] Fig.12 It is a structural exploded diagram of the fastening mechanism in one embodiment of a multi-station milling fixture.

[0045] Fig.13 for Fig.12 Schematic diagram of the structure from another angle.

[0046] In the figure: 1, cylinder body; 101, rod chamber; 102, rodless chamber; 103, guide groove; 2, motor; 3, piston; 4, piston rod; 5, buffer spring; 6, first oil port; 7, second oil port; 8, buffer plug; 801, guide protrusion; 9, first conical protrusion; 10, second conical protrusion; 11, support; 12, frame; 13, connecting column; 14, positioning plate; 1401, inclined surface; 1402, vertical surface; 15, first column spring; 16, first electric push rod; 17, guide rod; 18 , sleeve; 19, first clamping member; 20, second clamping member; 21, driving tube; 22, driven shaft; 2201, first slide groove; 2202, second slide groove; 2203, third slide groove; 2204, fourth slide groove; 2205, fifth slide groove; 23, second electric push rod; 24, connecting arm; 25, horizontal axis; 26, guide cylinder; 27, vertical rod; 28, receiving plate; 29, ratchet plate; 30, incomplete ratchet; 31, driving motor; 32, second cylindrical spring; 33, ring body; 34, transmission belt. DETAILED DESCRIPTION

[0047] 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.

[0048] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0049] See also Figure 1-Figure 5 In an embodiment of the present invention, an integrated high-pressure oil cylinder includes a cylinder body 1, a motor 2 connected to the outer wall of the cylinder body 1, and a movable part arranged in the cylinder body 1;

[0050] The movable part comprises a piston 3 sealingly and slidably arranged in the cylinder body 1 and a piston rod 4 connected to the piston 3, the piston rod 4 is sealingly and slidably connected to the end of the cylinder body 1 away from the motor 2, and the piston 3 divides the interior of the cylinder body 1 into a rod chamber 101 and a rodless chamber 102;

[0051] The rod chamber 101 and the rodless chamber 102 are respectively connected to the second oil port 7 and the first oil port 6 provided on the cylinder body 1, and the motor 2 is used to pump oil into the cylinder body 1 through the first oil port 6 and the second oil port 7, so that the piston 3 and the piston rod 4 move along the axial direction of the cylinder body 1;

[0052] A group of elastic buffers are respectively provided in the rod chamber 101 and the rodless chamber 102 . When the piston 3 reaches the end point of the movement stroke, it can cooperate with one of the groups of elastic buffers.

[0053] Specifically, the cylinder body 1 is connected to a housing for assembling the motor 2 to realize an integrated setting of the cylinder body 1 and the motor 2. This integrated setting can improve the convenience of the oil cylinder in actual use.

[0054] The elastic buffer comprises a buffer plug 8 sealingly and slidably disposed in the rodless cavity 102 and a buffer spring 5 disposed in the rodless cavity 102, one end of the buffer spring 5 being connected to the inner wall of the cylinder body 1, and the other end being connected to the side of the buffer plug 8 away from the piston 3, two guide protrusions 801 being formed on the outer wall of the buffer plug 8, and two guide grooves 103 matching the guide protrusions 801 being disposed on the inner wall of the cylinder body 1;

[0055] Among them, a first conical protrusion 9 is formed on the side of the buffer plug 8 close to the piston 3, and a second conical protrusion 10 is provided on each side of the piston 3. The second conical protrusion 10 abuts against the first conical protrusion 9, and an annular chamber is formed therebetween. The first oil port 6 is located between the first conical protrusion 9 and the second conical protrusion 10.

[0056] Furthermore, the two groups of elastic buffers have the same structure. In this regard, the above description is for the elastic buffer located in the rodless cavity 102. It should be noted that for the elastic buffer located in the rod cavity 101, a through hole for the piston rod 4 to pass through is provided at the center of the buffer plug 8, and the buffer plug 8 is sealingly and slidably connected with the piston rod 4 and the inner wall of the cylinder body 1;

[0057] Taking the state shown in the accompanying drawings as an example, at this time, the piston rod 4 is in a retracted state. When the piston rod 4 needs to be driven to extend, the motor 2 is used to pump oil between the first conical protrusion 9 and the second conical protrusion 10 (i.e., the annular chamber) through the first oil port 6. Then, the pumped oil will push the piston 3 to cause the piston rod 4 to extend. At this time, the oil in the rod chamber 101 is discharged through the second oil port 7. During the latter part of the movement stroke of the piston 3, the second conical protrusion 10 located on the side of the piston rod 3 away from the first oil port 6 will contact the second conical protrusion 10 located on the side of the piston rod 3 away from the first oil port 6. The second conical protrusion 10 contacts the elastic buffer in the rod cavity 101. Specifically, the second conical protrusion 10 moves close to the first conical protrusion 9 until the second conical protrusion 10 acts on the first conical protrusion 9, prompting the buffer plug 8 to move. The buffer spring 5 is compressed, thereby effectively buffering the piston 3, avoiding mechanical collision between the piston 3 and the cylinder wall when the piston 3 reaches the terminal, thereby generating impact pressure and noise, and effectively preventing the cylinder itself and related system heavy piping, valves, instruments and other components from being damaged due to impact and collision, thereby improving the performance of the cylinder;

[0058] On the contrary, when it is necessary to control the retraction of the piston rod 4, the motor 2 pumps oil into the rod chamber 101 through the second oil port 7, so that the oil in the rodless chamber 102 is discharged through the first oil port 6, the piston 3 gradually moves toward the bottom of the cylinder, and the piston rod 4 retracts. At this time, the buffer spring 5 located in the rodless chamber 102 rebounds, so that the buffer plug 8 connected thereto is reset. When the retraction amount of the rodless chamber 102 reaches the maximum value, the buffer plug 8 is impacted by the piston 3 and moves, and the buffer spring 5 is compressed again to buffer the piston 4.

[0059] It should be further explained that the first conical protrusion 9 and the second conical protrusion 10 have two advantages:

[0060] Firstly, the arrangement of the first conical protrusion 9 and the second conical protrusion 10 can form the annular chamber between the two after the buffering is completed, and the first oil port 6 or the second oil port 7 corresponds to the annular chamber, thereby avoiding the two being in close contact and causing the subsequent failure to smoothly pump oil into the rod chamber 101 or the rodless chamber 102;

[0061] Secondly, the setting of the second conical protrusion 10 makes the contact area between the second conical protrusion 10 and the oil larger during the oil pumping process, and the conical surface can have a certain gathering effect on the thrust of the oil, so that the stress is concentrated on the piston rod 4. Therefore, the stability of the movement of the piston 3 and the piston rod 4 can be improved, and the load on the oil pump can be reduced.

[0062] See also Figure 6-Figure 13 As another embodiment of the present invention, a multi-station fixture for milling the integrated high-pressure oil cylinder is also proposed, comprising a plurality of supports 11 arranged side by side, and further comprising:

[0063] A receiving plate 28 is movably arranged on the support 11, and is used to receive the oil cylinder to form a placement position for placing the oil cylinder. The support 11 is provided with a positioning mechanism for pre-clamping the oil cylinder located at the placement position. The receiving plate 28 is connected to a jacking mechanism installed at the bottom of the support 11;

[0064] A fastening mechanism is installed on the support 11, and a group is provided on each side of the positioning mechanism. The fastening mechanism can perform a clamping and fastening action on the pre-clamped cylinder, and the fastening mechanism is connected to the jacking mechanism through a transmission mechanism. The jacking mechanism is triggered when the fastening mechanism releases the fastening state of the cylinder, and can drive the receiving plate 28 to lift the cylinder. At the same time, the transfer mechanism provided on the side of the support 11 can transfer the cylinder located on the receiving plate 28.

[0065] It should be noted that the fixture is composed of multiple groups of identical structures assembled side by side, so that multiple workpieces can be clamped at the same time, allowing multiple workpieces to be processed, tested or assembled at the same time during one clamping process. Compared with traditional single-station fixtures, it greatly improves production efficiency and equipment utilization.

[0066] Specifically, in actual use, the cylinder to be milled is placed on the receiving plate 28, and the positioning mechanism pre-clamps the cylinder, thereby positioning the cylinder and ensuring the stability of the subsequent clamping of the cylinder.

[0067] Subsequently, the fastening mechanism works to complete the clamping and fastening of the oil cylinder, and then the milling process of the oil cylinder can be started. After the milling process is completed, the fastening mechanism releases the fixation of the oil cylinder. During this process, the transmission mechanism drives the lifting mechanism to move, so that the lifting mechanism drives the receiving plate 28 to complete a lifting action. After the oil cylinder is lifted by the receiving plate 28, it is separated from the positioning mechanism, and the transfer mechanism transfers the oil cylinder located on the receiving plate 28;

[0068] In summary, through the mutual cooperation between various mechanisms and components, an effective clamping function of the cylinder is achieved, and in conjunction with the transfer mechanism, the automatic transfer of the processed cylinder can be achieved, providing convenience for mass production.

[0069] Please refer again Figure 8 The positioning mechanism includes a frame 12 arranged on the support 11 and a plurality of pre-tightening structures arranged on the frame 12, and the plurality of pre-tightening structures are equidistantly distributed along the circumference, and include two connecting columns 13 slidably arranged on the frame 12, a positioning plate 14 connected to the two connecting columns 13, and two first cylindrical springs 15 respectively sleeved on the outer circumference of the two connecting columns 13, the two ends of the first cylindrical spring 15 are respectively connected to the inner wall of the frame 12 and the positioning plate 14, and the side of the positioning plate 14 away from the connecting column 13 is provided with an inclined surface 1401 and a vertical surface 1402.

[0070] When in use, the staff places the workpiece to be processed in the frame 12, and the bottom end of the workpiece contacts the inclined surface 1401. Then, the workpiece is pressed down, which will cause the positioning plate 14 to give way, that is, multiple positioning plates 14 spread out to the surroundings, and the connecting column 13 slides on the frame 12, and the first cylindrical spring 15 is compressed. After the workpiece is pressed down onto the receiving plate 28, the workpiece is separated from the inclined surface 1401. Under the elastic support of the first cylindrical spring 15, the vertical surface 1402 is pressed against the side of the workpiece, thereby realizing the pre-clamping function of the workpiece, avoiding the workpiece from shifting during the subsequent clamping process, which makes it difficult to perform milling processing accurately.

[0071] Please refer again Fig.12 and Fig.13 The fastening mechanism includes a guide rod 17 arranged on the support 11, a sleeve 18 slidably fitted with the guide rod 17, and a first clamping member 19 connected to the sleeve 18. A first electric push rod 16 is also installed on the support 11. The sleeve 18 is fixed to the movable end of the first electric push rod 16. The movable end of the first electric push rod 16 is also connected to a drive tube 21, and the drive tube 21 is connected to the transmission mechanism.

[0072] Please refer again Fig.10 , Fig.11 as well as Fig.12 The lifting mechanism includes two guide cylinders 26 disposed at the bottom of the support 11 and two vertical rods 27 respectively slidingly sleeved with the two guide cylinders 26 and connected to the receiving plate 28;

[0073] The vertical rod 27 is connected to a ring body 33 slidably disposed in the guide cylinder 26 . A second cylindrical spring 32 is sleeved on the outer periphery of the vertical rod 27 . Two ends of the second cylindrical spring 32 are respectively connected to the inner wall of the guide cylinder 26 and the ring body 33 .

[0074] The transmission mechanism includes a driven shaft 22 rotatably mounted on the support 11 and slidably engaged with the driving tube 21, an incomplete ratchet 30 rotatably mounted at the bottom of the support 11, and a ratchet plate 29 fixedly arranged between the two vertical rods 27 and engaged with the incomplete ratchet 30. The driven shaft 22 is connected to the rotating shaft of the incomplete ratchet 30 through a transmission belt 34.

[0075] Among them, a boss is provided on the inner wall of the driving tube 21, and a transmission groove adapted to the boss is provided on the outer wall of the driven shaft 22, and the transmission groove includes a first slide groove 2201, a second slide groove 2202, a third slide groove 2203, a fourth slide groove 2204 and a fifth slide groove 2205 that are connected. The first slide groove 2201, the third slide groove 2203 and the fifth slide groove 2205 are arranged along the axial direction of the driven shaft 22, and the second slide groove 2202 and the fourth slide groove 2204 are arranged along the spiral on the driven shaft 22.

[0076] Taking the state shown in the accompanying drawings as an example, at this time, the ring body 33 abuts against the inner wall of the guide cylinder 26, and when the workpiece is pressed down to complete the pre-clamping and be placed on the receiving plate 28, the receiving plate 28 cannot move down and maintains the current height, and the toothed portion on the incomplete ratchet 30 is disengaged from the ratchet on the ratchet plate 29;

[0077] In detail, the ratchet on the ratchet plate 29 is rotatably connected, and a torsion spring is provided in the mounting groove on the ratchet plate 29 to support the ratchet and ensure that the ratchet can maintain a normal deflection angle to cooperate with the toothed portion on the incomplete ratchet 30.

[0078] After the workpiece is pre-clamped, the first electric push rod 16 pushes the first clamping member 19 to move closer to the workpiece through the sleeve 18 until the first clamping member 19 clamps the workpiece. During this process, the first electric push rod 16 also drives the driving tube 21 to slide on the driven shaft 22, and the boss on the inner wall of the driving tube 21 passes through the first slide groove 2201, the second slide groove 2202, the third slide groove 2203, the fourth slide groove 2204 and the fifth slide groove 2205 in sequence. When the driven shaft 22 passes through the second slide groove 2202 and the fourth slide groove 2204, the boss will slide with the driven shaft 22, so that the driven shaft 22 will rotate twice in the positive direction, and the sum of the two rotation angles of the driven shaft 22 is 360°. The driven shaft 22 drives the incomplete ratchet 30 to rotate through the transmission belt 34. At this time, when the toothed part on the incomplete ratchet 30 passes through the ratchet on the ratchet plate 29, the ratchet will swing once, and the ratchet plate 29 will not move.

[0079] After the milling process is completed, the first electric push rod 16 drives the first clamping member 19 to reset and contact the workpiece to a clamped and tightened state. Accordingly, the boss passes through the fifth slide groove 2205, the fourth slide groove 2204, the third slide groove 2203, the second slide groove 2202 and the first slide groove 2201 in sequence. During this process, when the boss passes through the fourth slide groove 2204, the incomplete ratchet 30 performs a first reverse rotation. When passing through the fourth slide groove 2204, the incomplete ratchet 30 performs a second reverse rotation. During the first rotation The toothed portion on the incomplete ratchet 30 cooperates with the ratchet teeth, prompting the ratchet plate 29 to drive the vertical rod 27 to move upward, the second cylindrical spring 32 is compressed, and the receiving plate 28 lifts the workpiece upward. Subsequently, when the protruding column slides along the third sliding groove 2203, the workpiece remains lifted, and the transfer mechanism transfers the workpiece on the receiving plate 28. After the incomplete ratchet 30 completes the second reverse rotation, the toothed portion on the incomplete ratchet 30 disengages from the ratchet teeth, so that the second cylindrical spring 32 rebounds and the receiving plate 28 moves down and resets.

[0080] Please refer again Fig. 9 and Fig.10 The transfer mechanism includes a transverse shaft 25 rotatably mounted at the bottom of the support 11 and two sets of deflection structures arranged on the transverse shaft 25. A driving motor 31 is also installed at the bottom of the support 11, and the output end of the driving motor 31 is connected to the transverse shaft 25;

[0081] The deflection structure includes two connecting arms 24 installed on the horizontal axis 25 , two second electric push rods 23 installed at one end of the connecting arms 24 away from the horizontal axis 25 , and a second clamping member 20 connecting the movable ends of the two second electric push rods 23 .

[0082] When the first clamping member 19 releases the workpiece, the protruding column on the inner wall of the driving tube 21 slides along the third sliding groove 2203, and the receiving plate 28 remains stationary, and the workpiece thereon is separated from the plurality of positioning plates 14. At this time, the driving motor 31 drives the horizontal axis 25 to rotate, so that the connecting arm 24 is deflected until the two second clamping members 20 are deflected to the two sides of the workpiece, and then the second electric push rod 23 drives the second clamping member 20 to move close to the workpiece, so that the two second clamping members 20 clamp the workpiece, and then the driving motor 31 drives the connecting arm 24 to deflect and reset through the horizontal axis 25, thereby completing the transfer of the milled workpiece, without the need to manually remove the workpiece in the frame 12;

[0083] In addition, after the connecting arm 24 is reset after the deflection, the workpiece is in a flat position. Furthermore, the driving motor 31 can drive the connecting arm 24 to continue to deflect downward, so that the workpiece is in an inverted position. Therefore, it is conducive to the falling off of debris (generated during milling) adhering to the workpiece, avoiding damage to the hands of manual workers due to debris during manual unloading.

[0084] As another embodiment of the present invention, a method for machining an integrated high-pressure oil cylinder using the multi-station fixture for milling the integrated high-pressure oil cylinder is also proposed, comprising the following steps:

[0085] Step 1: Place the oil cylinder to be processed in the frame 12 so that the oil cylinder is placed on the receiving plate 28, and the positioning mechanism pre-clamps the oil cylinder;

[0086] Step 2: The fastening mechanism clamps the oil cylinder for a second time, and then starts milling the oil cylinder;

[0087] Step 3: After the milling process is completed, the fastening mechanism releases the oil cylinder, the transmission mechanism drives the lifting mechanism to be triggered, and the lifting mechanism drives the receiving plate 28 to lift the oil cylinder, so that the oil cylinder is separated from the positioning mechanism;

[0088] Step 4: The transfer mechanism works to transfer the oil cylinder on the receiving plate 28, and the receiving plate 28 moves down and returns to its original position after the fastening mechanism is reset.

[0089] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0090] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An integrated high-pressure oil cylinder, comprising a cylinder body (1), a motor (2) connected to the outer wall of the cylinder body (1), and a movable part arranged in the cylinder body (1); The movable part comprises a piston (3) sealingly and slidably arranged in the cylinder body (1) and a piston rod (4) connected to the piston (3); the piston rod (4) is sealingly and slidably connected to an end of the cylinder body (1) away from the motor (2), and the piston (3) divides the interior of the cylinder body (1) into a rod chamber (101) and a rodless chamber (102); It is characterized in that The rod chamber (101) and the rodless chamber (102) are respectively connected to a second oil port (7) and a first oil port (6) provided on the cylinder body (1); the motor (2) is used to pump oil into the cylinder body (1) through the first oil port (6) and the second oil port (7) so that the piston (3) and the piston rod (4) move along the axial direction of the cylinder body (1); A group of elastic buffers are respectively provided in the rod chamber (101) and the rodless chamber (102), and when the piston (3) reaches the end point of the movement stroke, it can cooperate with one of the groups of elastic buffers; The elastic buffer comprises a buffer plug (8) sealingly and slidably arranged in the rodless cavity (102) and a buffer spring (5) arranged in the rodless cavity (102), one end of the buffer spring (5) is connected to the inner wall of the cylinder body (1), and the other end is connected to the side of the buffer plug (8) away from the piston (3), two guide protrusions (801) are formed on the outer wall of the buffer plug (8), and two guide grooves (103) adapted to the guide protrusions (801) are provided on the inner wall of the cylinder body (1); The buffer plug (8) is provided with a first conical protrusion (9) on one side close to the piston (3), and a second conical protrusion (10) is provided on each side of the piston (3). The second conical protrusion (10) abuts against the first conical protrusion (9), and an annular chamber is formed therebetween. The first oil port (6) is located between the first conical protrusion (9) and the second conical protrusion (10).

2. A multi-station fixture for milling the integrated high-pressure oil cylinder according to claim 1, comprising a plurality of supports (11) arranged side by side; It is characterized in that Also includes: A receiving plate (28) is movably arranged on the support (11) and is used to receive the oil cylinder to form a placement position for placing the oil cylinder, and a positioning mechanism for pre-clamping the oil cylinder located at the placement position is provided on the support (11), and the receiving plate (28) is connected to a jacking mechanism installed at the bottom of the support (11); A fastening mechanism is mounted on the support (11), and a group is provided on each side of the positioning mechanism. The fastening mechanism can perform a clamping and fastening action on the pre-clamped oil cylinder, and the fastening mechanism is connected to the lifting mechanism through a transmission mechanism. The lifting mechanism is triggered when the fastening mechanism releases the fastening state of the oil cylinder, and can drive the receiving plate (28) to lift the oil cylinder. At the same time, a transfer mechanism provided on the side of the support (11) can transfer the oil cylinder located on the receiving plate (28).

3. The multi-station fixture for milling with an integrated high-pressure cylinder according to claim 2 is characterized in that: The positioning mechanism comprises a frame (12) arranged on the support (11) and a plurality of pre-tightening structures arranged on the frame (12), wherein the plurality of pre-tightening structures are equidistantly distributed along a circumference, and comprises two connecting columns (13) slidably arranged on the frame (12), a positioning plate (14) connected to the two connecting columns (13), and two first columnar springs (15) respectively sleeved on the outer circumference of the two connecting columns (13), wherein the two ends of the first columnar spring (15) are respectively connected to the inner wall of the frame (12) and the positioning plate (14), and an inclined surface (1401) and a vertical surface (1402) are provided on a side of the positioning plate (14) away from the connecting columns (13).

4. The multi-station fixture for milling with an integrated high-pressure oil cylinder according to claim 2 is characterized in that: The fastening mechanism comprises a guide rod (17) arranged on the support (11), a sleeve (18) slidably fitted with the guide rod (17), and a first clamping member (19) connected to the sleeve (18); a first electric push rod (16) is also mounted on the support (11); the sleeve (18) is fixed to the movable end of the first electric push rod (16); the movable end of the first electric push rod (16) is also connected to a drive tube (21); and the drive tube (21) is connected to the transmission mechanism.

5. The multi-station fixture for milling with an integrated high-pressure cylinder according to claim 4 is characterized in that: The lifting mechanism comprises two guide cylinders (26) arranged at the bottom of the support (11) and two vertical rods (27) respectively slidingly sleeved with the two guide cylinders (26) and connected to the receiving plate (28); The vertical rod (27) is connected to a ring body (33) slidably arranged in the guide cylinder (26), and a second cylindrical spring (32) is sleeved on the outer circumference of the vertical rod (27), and two ends of the second cylindrical spring (32) are respectively connected to the inner wall of the guide cylinder (26) and the ring body (33).

6. The multi-station fixture for milling with an integrated high-pressure oil cylinder according to claim 5 is characterized in that: The transmission mechanism comprises a driven shaft (22) rotatably mounted on the support (11) and slidably fitted with the driving tube (21), an incomplete ratchet (30) rotatably mounted at the bottom of the support (11), and a ratchet plate (29) fixedly arranged between the two vertical rods (27) and fitted with the incomplete ratchet (30), wherein the driven shaft (22) is connected to the rotating shaft of the incomplete ratchet (30) via a transmission belt (34); A boss is provided on the inner wall of the driving tube (21), and a transmission groove adapted to the boss is provided on the outer wall of the driven shaft (22), wherein the transmission groove comprises a first slide groove (2201), a second slide groove (2202), a third slide groove (2203), a fourth slide groove (2204) and a fifth slide groove (2205) which are connected to each other; the first slide groove (2201), the third slide groove (2203) and the fifth slide groove (2205) are arranged along the axial direction of the driven shaft (22), and the second slide groove (2202) and the fourth slide groove (2204) are arranged along a spiral on the driven shaft (22).

7. The multi-station fixture for milling with an integrated high-pressure oil cylinder according to claim 2 is characterized in that: The transfer mechanism comprises a transverse shaft (25) rotatably mounted on the bottom of the support (11) and two sets of yaw structures arranged on the transverse shaft (25); a drive motor (31) is also mounted on the bottom of the support (11), and an output end of the drive motor (31) is connected to the transverse shaft (25); The deflection structure comprises two connecting arms (24) mounted on the transverse axis (25), two second electric push rods (23) mounted on one end of the connecting arms (24) away from the transverse axis (25), and a second clamping member (20) connecting the movable ends of the two second electric push rods (23).

8. A method for processing an integrated high-pressure oil cylinder using a multi-station fixture for milling the integrated high-pressure oil cylinder as claimed in claim 3, characterized in that: The following steps are involved: Step 1, placing the oil cylinder to be processed in the frame (12), placing the oil cylinder on the receiving plate (28), and pre-clamping the oil cylinder by a positioning mechanism; Step 2: The fastening mechanism clamps the oil cylinder for a second time, and then starts milling the oil cylinder; Step 3: After the milling process is completed, the fastening mechanism releases the oil cylinder, the transmission mechanism drives the lifting mechanism to be triggered, and the lifting mechanism drives the receiving plate (28) to lift the oil cylinder, so that the oil cylinder is separated from the positioning mechanism; Step 4: The transfer mechanism works to transfer the oil cylinder on the receiving plate (28), and after the fastening mechanism is reset, the receiving plate (28) is moved down and reset.

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