A high-strength titanium alloy head and its forming equipment

Abstract

The present invention relates to the technical field of titanium alloy head forming, and discloses a high-strength titanium alloy head and its forming equipment, including a die base, an extrusion groove extending upward from the inner middle position of the die base, a hydraulic lifting seat movably arranged directly above the extrusion groove, a cold pressing die acting on the titanium alloy plate movably arranged on the lower end surface of the hydraulic lifting seat, a feed table connected to the horizontal right side of the die base, and a pusher seat riveted to the right end of the feed table. The present invention allows the hydraulic rod to be slowly recovered, and due to the action of the force arm, the small hydraulic cylinder and the auxiliary unloading plate are turned over together, extending out from the inside of the storage groove, allowing the hydraulic lifting seat to move upward in the return stroke, and with the help of its powerful upward force, the pressure wheel on the auxiliary unloading plate contacts the bottom of the head during the upward movement, generating a relative force, and at the same time, in conjunction with the hydraulic action of the unloading ejector, the head and the extrusion groove produce relative movement, playing the role of auxiliary unloading, saving time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of titanium alloy head forming, and in particular to a high-strength titanium alloy head and a forming device thereof. Background Art

[0002] Titanium alloy has the advantages of high strength, corrosion resistance and light weight. It is suitable for manufacturing containers and components that withstand high pressure, such as aircraft engine ship propellers, oil storage tanks, etc. Titanium alloy heads are widely used in aviation, aerospace, marine engineering and other fields. For example, in the aerospace field, titanium alloy heads can be used for cabins, rocket nozzles, etc.; titanium alloy hemispherical heads are pressed from titanium alloy plates, mainly divided into three forming methods: cold stamping, hot pressing and spinning. Among them, for the processing of hemispherical heads with lighter volume and thinner wall thickness, cold stamping equipment has the advantages of high precision, high processing efficiency and low cost.

[0003] The existing titanium alloy head forming equipment has many technical defects when in use. First, when placing the titanium alloy plate on the die base, multiple workers are required to calibrate its position, which is time-consuming and labor-intensive, with a low degree of automation and insufficient precision in manual operation, resulting in large errors in the size of the finished head. Second, before pressing the titanium alloy plate, it is necessary to manually apply lubricant to the upper end surface of the titanium alloy plate to reduce the friction between the blank and the die, but this is time-consuming and labor-intensive, with low work efficiency, and the manual application is not uniform enough. Third, since the head and the extrusion groove have an interference fit during the cold pressing process, the contact force between the two is strong after forming, and the success rate of directly using the unloading ejector to eject the head is low, and manual knocking (or the installation of an ejection mechanism) is often required.

[0004] In summary, considering that the existing facilities cannot meet the work requirements, we propose a high-strength titanium alloy head and its forming equipment. Summary of the invention

[0005] The main purpose of the present invention is to provide a high-strength titanium alloy head and a forming device thereof, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A high-strength titanium alloy head forming equipment comprises a die base, an extrusion groove is extended upward from the middle position inside the die base, a hydraulic lifting seat is movably arranged directly above the extrusion groove, a cold pressing die acting on the titanium alloy plate is movably arranged on the lower end face of the hydraulic lifting seat, connecting arms are evenly distributed around the outer side face of the hydraulic lifting seat, guide holes are arranged in each group of the connecting arms, guide columns are passed through each group of the guide holes, the number of the guide holes and guide columns are preferably 2-4 groups, and the guide columns are welded to the lower end face of the forming top seat.

[0007] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: the horizontal right side of the mold base is connected to a feed table, a push seat is riveted to the right position of the upper end surface of the feed table, the upper end of the push seat is connected to a limiting cylinder shell, a limiting rod groove is provided inside the push seat to the left, a push rod is movably provided in the limiting rod groove, and a clamping plate seat acting on the titanium alloy plate is welded to the end of the push rod outside the limiting rod groove, a horizontal groove for the movement of the clamping plate seat is provided in the middle position of the upper end surfaces of the feed table and the mold base, and a plurality of groups of side positioning wheels are symmetrically distributed on the upper end surface of the feed table and on both sides of the titanium alloy plate, and the number of the side positioning wheels in each row is preferably 6-12 groups.

[0008] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: two groups of screw mounting seats are symmetrically and vertically installed on the outer side surface of the feed table, and a lifting inner groove is vertically opened on the inner side surface of each group of the screw mounting seats, and a long screw is vertically installed inside each group of the lifting inner grooves, and the two ends of the long screw are connected by the first bearing seat and the inner wall of the screw mounting seat, and the long screw extends to the top of the screw mounting seat and is sleeved with a sprocket, and the two groups of the sprockets are connected and driven by chains, and the lower end of one group of the long screws extends downward and is connected to a screw motor through a coupling.

[0009] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, a lubricant adding seat is movably arranged at the middle position of the two groups of screw mounting seats, and moving arms are symmetrically arranged at both ends of the lubricant adding seat, and a screw nut sleeve acting on the long screw is installed inside the moving arm, and a positioning baffle acting on the titanium alloy plate is symmetrically riveted on the lower end edge of the lubricant adding seat, and the number of the positioning baffles is 2 groups.

[0010] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: a rotating roller is rotatably arranged in the limiting cylinder shell, short shafts are symmetrically welded on the left and right ends of the rotating roller, and each group of the short shafts is connected by the second bearing seat and the inner wall of the limiting cylinder shell, and a large gear is sleeved on the right short shaft extending outward, and a small gear is meshed at the lower end of the large gear, and the small gear is sleeved on the output shaft of the first servo motor, and the first servo motor is horizontally arranged through the outer side surface of the pushing seat, and the roller surface of the rotating roller is provided with a curved rotary groove, and the right end of the pushing rod is welded with a No. 1 slider extending into the curved rotary groove.

[0011] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, the upper end surface of the clamping plate seat is installed with a clamping cylinder, the interior of the clamping cylinder is downwardly extended with a cylinder rod movably provided, the lower end of the cylinder rod is welded with a movable curved clamp, and the inner side surface of the clamping plate seat is provided with an adjustment groove for the movable curved clamp to move up and down, a curved clamping groove for the edge of the titanium alloy plate to extend into is formed between the movable curved clamp and the bottom of the clamping plate seat, and the curved clamping groove and two sets of positioning baffles limit the clamping of the titanium alloy plate.

[0012] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: an isolation seat is arranged at the inner middle position of the lubricant adding seat, an annular shell is fixed upward inside the isolation seat, an eccentric crank disk is movably arranged inside the annular shell, an annular groove is provided on the front end face of the eccentric crank disk, a rotating shaft is horizontally welded at an eccentric position on the back side of the eccentric crank disk, the rotating shaft passes through the annular shell and is connected to a second servo motor by a coupling, a motor seat is sleeved on the outer side of the second servo motor, the motor seat is riveted on the annular shell, and an opening is provided at the lower position of the end face of the annular shell away from the motor seat.

[0013] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: a square limit sleeve is riveted inside the isolation seat, a square drive seat is movably arranged inside the square limit sleeve, the upper end of the square drive seat is welded with a No. 2 slider extending into the annular slide groove, the lower end of the square drive seat is connected to an injection barrel, the injection barrel extends downward from the lower end surface of the isolation seat, the lower end of the injection barrel is equipped with a porous material sprinkling joint, the porous material sprinkling joint is located directly above the titanium alloy plate, a plurality of groups of pressing holes are evenly arranged on the porous material sprinkling joint, the lower end of the square drive seat is welded with a pressure rod extending into the injection barrel, and the lower end of the pressure rod is welded with an arc punching head.

[0014] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, the lubricant adding seat is internally rotatably provided with an external gear seat, the outer side surface of the external gear seat is evenly provided with gear teeth around a circle, a driving gear is meshingly provided on one side of the gear teeth, and the driving gear is sleeved on the output shaft of the uniform speed motor, the uniform speed motor is vertically arranged through the upper end face of the lubricant adding seat, the upper and lower end faces of the external gear seat are both provided with annular wheel grooves, a guide wheel extending into the annular wheel groove is fixed inside the lubricant adding seat, the number of the guide wheels is preferably 2-3 groups, and a through opening for the isolation seat to pass through is opened in the middle of the external gear seat.

[0015] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: a connecting column is vertically welded on the lower end face of the external gear seat, and a rolling bearing is sleeved on the outer side surface of the connecting column. The lower end face of the lubricant adding seat and the outer side surface of the isolation seat are provided with an annular motion track, and the annular motion track is for the movement of the rolling bearing. A rotating motor seat is welded on the lower end of the connecting column, and a rotating motor is vertically installed inside the rotating motor seat. The output end of the rotating motor is connected to a rotating roller frame through an extension shaft, and a smear roller is rotatably arranged inside the rotating roller frame, and a part of the smear roller extends out of the rotating roller frame to act on the upper end face of the titanium alloy plate.

[0016] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, two groups of rectangular guide columns are symmetrically welded on the lower end surface of the hydraulic lifting seat, a rectangular long groove for the rectangular guide column to move is opened upward inside the mold base, the lower half of the rectangular long groove is connected to the interior of the extrusion groove, a receiving groove is vertically opened on the lower position of the inner side surface of the rectangular guide column, an auxiliary unloading plate is rotatably arranged in the receiving groove, a connecting part is arranged at the lower end of the unloading plate, two groups of positioning shafts are symmetrically welded on both sides of the connecting part, each group of the positioning shafts is fixed by a damping bearing seat and the groove wall of the receiving groove, a pressure wheel groove is opened on the upper end of the auxiliary unloading plate, a pressure wheel acting on the head is rotatably arranged in the pressure wheel groove.

[0017] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: a first articulated frame is arranged at the bottom of the storage groove, the first articulated frame is connected to the lower end of a small hydraulic cylinder, a hydraulic rod is arranged inside the small hydraulic cylinder for upward movement, a connecting plug is arranged at the end of the hydraulic rod, a second articulated frame is installed at the middle position of the back side of the auxiliary unloading plate, and the second articulated frame is connected to the connecting plug.

[0018] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, wherein: the lower end of the feeding table is welded with supporting legs, and the number of the supporting legs is preferably 2-4 groups.

[0019] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, a hydraulic structure acting on the cold pressing mold is installed in the hydraulic lifting seat.

[0020] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, a lifting drive structure acting on a hydraulic lifting seat is arranged inside the forming top seat.

[0021] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, a sprocket receiving seat for receiving the sprocket is fixed to the upper end of each group of the screw mounting seats, and a gap is opened on the sprocket receiving seat for the chain to extend out.

[0022] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, the moving arm extends into the interior of the lifting inner groove and moves up and down.

[0023] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, a storage hopper is installed on the upper end surface of the lubricant adding seat, and graphite lubricant is stored in the storage hopper. The bottom of the storage hopper is extended downward by a guide tube, and the lower end of the guide tube is connected to the interior of the injection barrel.

[0024] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, the coating roller is made of elastic rubber.

[0025] As a preferred solution of the high-strength titanium alloy head forming equipment described in the present invention, the auxiliary unloading plate moves outward from the inside of the storage groove and enters the lower position inside the extrusion groove, and a unloading ejector is installed in the middle position of the extrusion groove.

[0026] A high-strength titanium alloy head, the whole head is made of cold-pressed titanium alloy plates, the compressive strength is ≥900MPa, the yield strength is ≥83000MPa, and it is a hemispherical shell structure with a radius of 150-160mm and a thickness of 4.6-4.7mm. A straight edge section is arranged on the edge of the hemispherical shell structure, and the straight edge section is as thick as the hemispherical shell. The surface of the head substrate is covered with a micro-arc oxidation ceramic layer, the thickness of the ceramic layer is 1030μm, the porosity is ≤5%, and it contains a gradient distributed composite phase of TiO2 and Al2O3.

[0027] The present invention provides a high-strength titanium alloy head and a forming device thereof through improvement, which has the following significant improvements and advantages compared with the prior art: First, start the screw motor to drive one set of long screws to rotate, and through the connection transmission of the chain and two sets of sprockets, cause the other set of long screws to rotate synchronously in the same direction, thereby causing the lubricant adding seat to drop vertically. On the one hand, the coating roller is close to the upper end surface of the titanium alloy plate, which is convenient for the subsequent application of lubricant. On the other hand, the two sets of positioning baffles are dropped to a position close to the upper end surface of the feed table, and cooperate with the dynamic clamping plate seat to form a horizontal positioning of the titanium alloy plate, thereby achieving the purpose of automatic positioning.

[0028] Start the clamping cylinder, and the cylinder rod extends downward, driving the movable curved clamp to press on the edge of the upper end surface of the titanium alloy plate, so that the titanium alloy plate is clamped by the clamping plate seat. On the one hand, it is convenient to improve the stability of the titanium alloy plate when the coating roller moves to prevent it from shifting. On the other hand, the clamping plate seat clamps the titanium alloy plate and moves horizontally to the upper end surface of the die base, just landing on the upper end of the extrusion groove, solving the problem of inertial motion and achieving the purpose of precise positioning.

[0029] The uniform speed motor is started to drive the driving gear to rotate, and the meshing causes the external gear seat to make slow circular motion, and the coating roller follows to make a circular motion on the upper end surface of the titanium alloy plate. At the same time, the rotating motor in the rotating motor seat is started to cause the coating roller to rotate in a circle, so that the coating roller rotates and revolves at the same time. The two cooperate to fully cover the circumferential area of ​​the upper end surface of the titanium alloy plate, and the graphite lubricant on the titanium alloy plate is fully covered and evenly applied. It has a high degree of automation and saves time and effort.

[0030] The hydraulic rod is slowly retracted. Due to the action of the force arm, the small hydraulic cylinder and the auxiliary unloading plate are turned over together, and extend out from the inside and outside of the storage tank at an angle, allowing the hydraulic lifting seat to return upward. With its powerful upward force, the pressure wheel on the auxiliary unloading plate contacts the bottom of the head during the upward movement, and a relative force is generated between the two. At the same time, with the hydraulic action of the unloading ejector, the head and the extrusion groove produce relative movement, which plays a role in auxiliary unloading, saving time, effort and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of one aspect of the present invention; Figure 2 It is a schematic diagram of the overall structure of another aspect of the present invention; Figure 3 This is a schematic diagram of the external structure of the material pusher of the present invention; Figure 4 It is a schematic diagram of the internal structure of the limiting cylinder shell of the present invention; Figure 5 It is a schematic diagram of the internal structure of the pusher seat of the present invention; Figure 6 It is a schematic diagram of the upper structure of the feeding platform of the present invention; Figure 7 It is a schematic diagram of the internal structure of the screw rod mounting seat of the present invention; Figure 8 This is a schematic diagram of the internal structure of the isolation seat of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the annular housing of the present invention; Fig.10 It is a cross-sectional view of the square limiting sleeve and the injection barrel of the present invention; Fig.11This is a schematic diagram of the bottom structure of the lubricant adding seat of the present invention; Fig.12 This is a schematic diagram of the internal structure of the lubricant adding seat of the present invention; Fig.13 It is a schematic diagram of the upper end surface structure of the mold base in the second embodiment of the present invention; Fig.14 It is a schematic diagram of the specific structure of the rectangular guide column of the present invention; Fig.15 It is a schematic diagram of the hydraulic structure of the auxiliary unloading plate of the present invention.

[0032] In the figure: 1. Die base; 2. Extrusion groove; 3. Hydraulic lifting seat; 4. Hydraulic structure; 5. Cold pressing die; 6. Forming top seat; 7. Horizontal groove; 8. Titanium alloy plate; 10. Feeding table; 11. Pushing seat; 12. Limiting cylinder shell; 13. Rotating roller; 14. Short shaft; 15. Second bearing seat; 16. Large gear; 17. Small gear; 18. First servo motor; 20. Curved rotary groove; 21. Pushing rod; 22. No. 1 slider; 23. Limiting rod groove; 24. Clamp seat; 25. Clamping cylinder; 26, cylinder rod; 27, adjustment slot; 28, moving curved clip; 29, curved clip slot; 30, screw rod mounting seat; 31, lifting inner groove; 32, sprocket storage seat; 33, long screw rod; 34, first bearing seat; 35, sprocket; 36, chain; 37, screw motor; 40, lubricant adding seat; 41, moving arm; 42, screw nut sleeve; 43, isolation seat; 44, annular shell; 45, motor seat; 46, positioning baffle; 47, annular motion track; 50, Eccentric crank plate; 51, annular slide; 52, rotating shaft; 53, second servo motor; 54, opening; 60, square limit sleeve; 61, square drive seat; 62, second slider; 63, injection barrel; 64, porous sprinkler joint; 65, pressure rod; 66, arc punch head; 67, guide tube; 68, storage hopper; 69, pressure hole; 70, external gear seat; 71, annular wheel groove; 72, through port; 73, connecting column; 74, rolling bearing; 75, rotating motor seat; 76, extension shaft ; 77. Rotating roller frame; 78. Coating roller; 80. Rectangular guide column; 81. Rectangular long groove; 82. Storage groove; 83. Auxiliary unloading plate; 84. Connecting part; 85. Positioning shaft; 86. Damping bearing seat; 87. Pressure wheel; 831. First articulated frame; 832. Small hydraulic cylinder; 833. Hydraulic rod; 834. Second articulated frame; 90. Connecting arm; 91. Guide hole; 92. Guide column; 93. Side positioning wheel; 94. Gap; 95. Driving gear; 96. Constant speed motor. DETAILED DESCRIPTION

[0033] 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. Example 1

[0034] like Figure 1-12 As shown, this embodiment provides a high-strength titanium alloy head forming equipment, including a die base 1, an extrusion groove 2 is extended upward from the middle position of the die base 1, a hydraulic lifting seat 3 is movably arranged directly above the extrusion groove 2, and a cold pressing die 5 acting on the titanium alloy plate 8 is movably arranged on the lower end surface of the hydraulic lifting seat 3, and a hydraulic structure 4 acting on the cold pressing die 5 is installed in the hydraulic lifting seat 3 (the hydraulic structure 4 is the prior art and will not be described in detail), and connecting arms 90 are evenly distributed around the outer side surface of the hydraulic lifting seat 3, and guide holes 91 are opened in each group of connecting arms 90, and guide columns 92 pass through each group of guide holes 91, and the two move relative to each other to play a role of limiting guidance, and the guide columns 92 are welded to the lower end surface of the forming top seat 6, and a lifting drive structure acting on the hydraulic lifting seat 3 is arranged inside the forming top seat 6 (the lifting drive structure is the prior art and will not be described in detail).

[0035] Furthermore, a feed table 10 is connected to the horizontal right side of the die base 1, and a leg is welded at the lower end of the feed table 10 to play a supporting role. A pusher seat 11 is riveted to the right position of the upper end surface of the feed table 10, and a limited cylinder shell 12 is connected to the upper end of the pusher seat 11. Figure 1-3 shown.

[0036] A limiting rod groove 23 is formed in the interior of the pusher seat 11 to the left, and a pusher rod 21 is movably arranged in the limiting rod groove 23. The limiting rod groove 23 plays a role of limiting guide. Figure 3 shown.

[0037] Among them, a rotating roller 13 is rotatably arranged in the limiting cylinder shell 12, and the two are fully fitted. Short shafts 14 are symmetrically welded at both ends of the rotating roller 13, and each group of short shafts 14 is connected to the inner wall of the limiting cylinder shell 12 by using the second bearing seat 15. Figure 4 shown.

[0038] Further, a large gear 16 is sleeved on the right short shaft 14 extending outward, and a small gear 17 is meshed with the lower end of the large gear 16. The small gear 17 is sleeved on the output shaft of the first servo motor 18. The first servo motor 18 is horizontally arranged through the outer side of the pusher seat 11, such as Figure 2 , 4 and 5.

[0039] The roller surface of the rotating roller 13 is provided with a curved rotary groove 20 (the curved rotary groove 20 is designed as a rotary curve for linear reciprocating motion), and the right end of the push rod 21 is welded with a No. 1 slider 22 extending into the curved rotary groove 20, as shown in FIG. Figure 4 and 5 shown.

[0040] Furthermore, the end of the push rod 21 outside the limit rod groove 23 is welded with a clamping plate seat 24 acting on the titanium alloy plate 8 (the contact area between the clamping plate seat 24 and the titanium alloy plate 8 can be ignored during coating), such as Figure 3 shown.

[0041] In this embodiment, a clamping cylinder 25 is installed on the upper end surface of the clamping cylinder 24, and a cylinder rod 26 is movably provided inside the clamping cylinder 25 and extends downward. A movable curved clamp 28 is welded to the lower end of the cylinder rod 26. An adjustment groove 27 is provided on the inner side surface of the clamping plate seat 24 for the movable curved clamp 28 to move up and down. The adjustment groove 27 serves as a limiting guide. A curved clamping groove 29 is formed between the movable curved clamp 28 and the bottom of the clamping plate seat 24 for the edge of the titanium alloy plate 8 to extend into. The curved clamping groove 29 is at the same height as the upper end surface of the feed table 10. The curved clamping groove 29 and two sets of positioning baffles 46 limit and clamp the titanium alloy plate 8. Figure 3 shown.

[0042] Furthermore, a horizontal groove 7 for the clamping plate seat 24 to move is provided at the middle position of the upper end surface of the feed table 10 and the die base 1, and a plurality of sets of side positioning wheels 93 are symmetrically distributed on the upper end surface of the feed table 10 and located on both sides of the titanium alloy plate 8, and the spacing between the two rows of side positioning wheels 93 is the diameter of the titanium alloy plate 8, such as Figure 1 and 2 shown.

[0043] Furthermore, two sets of screw mounting seats 30 are symmetrically and vertically mounted on the outer side of the feed table 10, and a lifting inner groove 31 is vertically opened on the inner side of each set of screw mounting seats 30, and a long screw 33 is vertically mounted inside each set of lifting inner groove 31, such as Figure 1 , 2 and 6.

[0044] The two ends of the long lead screw 33 are connected to the inner wall of the lead screw mounting seat 30 by means of the first bearing seat 34. The long lead screw 33 extends upwardly to the lead screw mounting seat 30 and is sleeved with a sprocket 35. The two sets of sprockets 35 are connected and driven by a chain 36. The lower end of one set of the long lead screw 33 extends downwardly and is connected to a lead screw motor 37 through a coupling. The lead screw motor 37 is located at a lower position inside the lead screw mounting seat 30, such as Figure 6 and 7 shown.

[0045] Furthermore, a lubricant adding seat 40 is movably provided at the middle position of the two sets of screw mounting seats 30, and moving arms 41 are symmetrically provided at both ends of the lubricant adding seat 40. The moving arms 41 extend into the interior of the lifting inner groove 31 and move up and down to play a role of limiting guide. A screw nut sleeve 42 (the screw nut sleeve 42 includes a nut for spiral motion) acting on the long screw 33 is installed inside the moving arm 41. Figure 6 and 7 shown.

[0046] Among them, the lower edge of the lubricant adding seat 40 is symmetrically riveted with two sets of positioning baffles 46 acting on the titanium alloy plate 8, and the positioning baffles 46 are curved structures adapted to the edge of the titanium alloy plate 8 (the specific position of the positioning baffles 46 is determined according to the size of the titanium alloy plate 8), such as Figure 6 shown.

[0047] An isolation seat 43 is provided at the middle position of the lubricant adding seat 40, and an annular housing 44 is fixed upward inside the isolation seat 43. Figure 6 and 7 shown.

[0048] In this embodiment, an eccentric crank disk 50 is movably arranged inside the annular housing 44. The eccentric crank disk 50 partially moves against the wall. An annular slide groove 51 is provided on the front end surface of the eccentric crank disk 50. A rotating shaft 52 is horizontally welded at an eccentric position on the back of the eccentric crank disk 50. The rotating shaft 52 passes through the annular housing 44 and is connected to a second servo motor 53 by a coupling. A motor seat 45 is sleeved on the outer side of the second servo motor 53. The motor seat 45 is riveted to the annular housing 44. An opening 54 is provided at a lower position on the end surface of the annular housing 44 away from the motor seat 45. The opening 54 is provided for the second slider 62 to move up and down. Figure 8 and 9 shown.

[0049] In this embodiment, a square limiting sleeve 60 is riveted inside the isolation seat 43, and the square limiting sleeve 60 plays the role of limiting guide. A square driving seat 61 is movably arranged inside the square limiting sleeve 60, and a second slider 62 extending into the annular slide groove 51 is rotatably arranged on the upper end of the square driving seat 61. Figure 8 and 10 shown.

[0050] Among them, the lower end of the square drive seat 61 is connected to a material injection barrel 63, which extends downward from the lower end surface of the isolation seat 43. A porous material sprinkling joint 64 is installed at the lower end of the material injection barrel 63. The porous material sprinkling joint 64 is located directly above the titanium alloy plate 8. A plurality of groups of material pressing holes 69 are evenly arranged on the porous material sprinkling joint 64. A pressure rod 65 extending into the material injection barrel 63 is welded at the lower end of the square drive seat 61. The material injection barrel 63 and the pressure rod 65 are set as sliding seals. A circular arc punch head 66 is welded at the lower end of the pressure rod 65. Figure 8 , 10 and 11.

[0051] The upper end surface of the lubricant adding seat 40 is provided with a storage hopper 68, in which graphite lubricant (graphite lubricant has a certain fluidity) is stored. The bottom of the storage hopper 68 is extended downward by a guide tube 67. The lower end of the guide tube 67 is connected to the inside of the injection barrel 63 and is laterally sealed by a pressure rod 65. Figure 7 , 8 and 10.

[0052] Furthermore, the lubricant adding seat 40 is internally rotatably provided with an external gear seat 70, and the outer side surface of the external gear seat 70 is uniformly provided with gear teeth around a circle, and a driving gear 95 is meshed with one side of the gear teeth. The driving gear 95 is sleeved on the output shaft of the uniform speed motor 96, and the uniform speed motor 96 is vertically arranged through the upper end surface of the lubricant adding seat 40, such as Figure 7 and 12 shown.

[0053] The upper and lower end surfaces of the outer gear seat 70 are both provided with an annular wheel groove 71, and a guide wheel extending into the annular wheel groove 71 is fixed inside the lubricant adding seat 40 to play a role of limiting and guiding. The middle part of the outer gear seat 70 is provided with a through hole 72 for the isolation seat 43 to pass through. Fig.12 shown.

[0054] The lower end surface of the outer gear seat 70 is vertically welded with a connecting column 73, and the outer side surface of the connecting column 73 is sleeved with a rolling bearing 74. The lower end surface of the lubricant adding seat 40 is located on the outer side surface of the isolation seat 43 and is provided with an annular motion track 47. The annular motion track 47 is provided for the rolling bearing 74 to move, and the annular motion track 47 plays a role of limiting guide, such as Fig.11 and 12 shown.

[0055] In this embodiment, a rotating motor seat 75 is welded to the lower end of the connecting column 73, a rotating motor is vertically installed inside the rotating motor seat 75, the output end of the rotating motor is connected to a rotating roller frame 77 through an extension shaft 76, a coating roller 78 is rotatably arranged inside the rotating roller frame 77 (the coating roller 78 rotates around the rotating roller frame 77, and the friction resistance in the movement process is converted into rotational force), the coating roller 78 is made of elastic rubber, and a part of the coating roller 78 extends out of the rotating roller frame 77 to act on the upper end surface of the titanium alloy plate 8, as shown in FIG. Fig.11 and 12 shown.

[0056] Furthermore, a sprocket receiving seat 32 for receiving the sprocket 35 is fixed to the upper end of each screw rod mounting seat 30, and a gap 94 is provided on the sprocket receiving seat 32 for the chain 36 to extend out. Figure 6 shown.

[0057] Furthermore, a discharge ejector is installed in the middle of the extrusion tank 2 to discharge the material upwards by utilizing hydraulic force.

[0058] When this embodiment is in use, the titanium alloy plate 8 is first placed on the upper end surface of the feed table 10, between the two rows of side positioning wheels 93. At this time, the screw motor 37 is started first to drive one group of long screws 33 to rotate, and through the connection transmission of the chain 36 and the two groups of sprockets 35, the other group of long screws 33 is caused to rotate synchronously in the same direction, thereby causing the lubricant adding seat 40 to vertically descend (the screw nut sleeve 42 in the moving arm 41 and the thread on the long screw 33 interact with each other) until the two groups of positioning baffles 46 descend to a position close to the upper end surface of the feed table 10 and stop moving.

[0059] At this time, the first servo motor 18 is started to drive the small gear 17 to rotate, and the large gear 16 is caused to rotate through the meshing deceleration effect, so that the rotating roller 13 moves slowly, and the push rod 21 uses the force generated by the relative movement of the first slider 22 in the curved rotary groove 20 to first cause the push rod 21 to move linearly to the left in the limit rod groove 23, thereby driving the clamping plate seat 24 to move linearly in the horizontal groove 7, and in the process of movement, the edge of the titanium alloy plate 8 enters the curved clamping groove 29, pushing the titanium alloy plate 8 They move linearly to the left together (cooperating with the guiding effect of the side positioning wheels 93 on both sides) until the titanium alloy plate 8 contacts the two sets of positioning baffles 46. At this time, the positioning baffles 46 and the movable clamping plate seat 24 form a horizontal positioning for the titanium alloy plate 8, and the titanium alloy plate 8 is just below the lubricant adding seat 40. At this time, the clamping cylinder 25 is started again, and the cylinder rod 26 extends downward along the adjustment groove 27, driving the movable curved clamp 28 to be pressed on the edge of the upper end surface of the titanium alloy plate 8, so that the titanium alloy plate 8 is clamped by the clamping plate seat 24.

[0060] At this time, the second servo motor 53 is started first, and the rotating shaft 52 drives the eccentric crank disk 50 to perform eccentric movement inside the annular shell 44, so that the second slider 62 and the rotating annular slide groove 51 have relative action, thereby causing the square drive seat 61 to perform reciprocating lifting and lowering movement in the square limit sleeve 60, thereby driving the lower end pressure rod 65 to perform reciprocating lifting and lowering movement in the injection barrel 63. The pressure rod 65 first exposes the lower pipe mouth of the guide tube 67 during the rising process, so that part of the graphite lubricant in the guide tube 67 flows into the injection barrel 63, and then the pressure rod 65 blocks the lower pipe mouth of the guide tube 67 during the descending process, and then uses the arc punch head 66 to squeeze the graphite lubricant in the injection barrel 63, and finally squeezes it out from several groups of pressure holes 69 of the porous sprinkling joint 64. This is repeated many times, and the graphite lubricant is evenly sprinkled on the upper end surface of the titanium alloy plate 8 below.

[0061] At this time, let the coating roller 78 be close to the upper end surface of the titanium alloy plate 8, and then start the uniform speed motor 96 to drive the driving gear 95 to rotate, and cause the outer gear seat 70 to make a slow circular motion through meshing, thereby driving the connecting column 73 to move in the annular motion track 47, and the coating roller 78 follows the upper end surface of the titanium alloy plate 8 to make a circular motion, and at the same time start the rotating motor in the rotating motor seat 75 to cause the coating roller 78 to rotate in a circle (the rotation range of the coating roller 78 does not exceed the boundary of the titanium alloy plate 8), so that the coating roller 78 rotates and revolves at the same time, and the two cooperate to fully cover the circumferential area of ​​the upper end surface of the titanium alloy plate 8, and evenly apply the graphite lubricant on the titanium alloy plate 8.

[0062] After that, the lubricant adding seat 40 is returned upward, and the push rod 21 continues to move to the left. The clamping plate seat 24 clamps the titanium alloy plate 8 and moves horizontally to the upper end surface of the die seat 1, just landing on the upper end of the extrusion groove 2 (the maximum stroke of the clamping plate seat 24 is the cold pressing forming landing position of the titanium alloy plate 8). At this time, the movable curved clamp 28 is returned upward to release the clamping force. The No. 1 slider 22 continues to move relative to the curved rotary groove 20, and begins to cause the push rod 21 to return to the right in a straight line. The clamping plate seat 24 and the titanium alloy plate 8 are separated. Then the lifting drive structure works, first allowing the hydraulic lifting seat 3 to descend to the upper end surface of the die seat 1, and the two are tightly attached. Then the hydraulic structure 4 is used to drive the cold pressing die 5 to continue to descend, and cooperate with the extrusion groove 2 to press the titanium alloy plate 8, so that it completely enters the extrusion groove 2 and becomes a head. Then the unloading ejector uses the hydraulic force to eject the head upward from the extrusion groove 2 to complete the cold pressing process, and the cycle is repeated. Example 2

[0063] On the basis of the first embodiment, since there is an interference fit between the head and the extrusion groove 2 during the cold pressing process, the contact force between the two is strong after forming, and the success rate of directly using the unloading ejector to eject the head is low, and manual knocking (or adding an ejection mechanism) is often required. This is time-consuming and labor-intensive, and the degree of automation is low. In order to solve the above technical problems, we have the following design, such as Figure 13-15 shown.

[0064] Specifically, two groups of rectangular guide columns 80 are symmetrically welded on the lower end surface of the hydraulic lifting seat 3. A rectangular long groove 81 for the rectangular guide column 80 to move is opened upward inside the mold base 1, which plays a role of limiting guidance and can increase the stability of the lifting movement of the hydraulic lifting seat 3. The lower half of the rectangular long groove 81 is connected to the inside of the extrusion groove 2. A receiving groove 82 is vertically opened at the lower position of the inner side surface of the rectangular guide column 80, and an auxiliary unloading plate 83 is rotatably arranged in the receiving groove 82. Fig.13 and 14 shown.

[0065] The lower end of the auxiliary unloading plate 83 is provided with a connecting portion 84, and two sets of positioning shafts 85 are symmetrically welded on both sides of the connecting portion 84. Each set of positioning shafts 85 is fixed by a damping bearing seat 86 and the groove wall of the receiving groove 82. Fig.14 and 15 shown.

[0066] The upper end of the auxiliary unloading plate 83 is provided with a pressure wheel groove, in which a pressure wheel 87 acting on the head is rotatably arranged, and the pressure wheel 87 is made of a buffering and wear-resistant material, such as Fig.14 and 15 shown.

[0067] In this embodiment, a first articulated frame 831 is provided at the bottom of the storage groove 82, and the first articulated frame 831 is connected to the lower end of the small hydraulic cylinder 832. A hydraulic rod 833 is provided inside the small hydraulic cylinder 832 for upward movement, and a connecting plug is provided at the end of the hydraulic rod 833. A second articulated frame 834 is installed at the middle position of the back of the auxiliary unloading plate 83, and the second articulated frame 834 is connected to the connecting plug. Fig.14 and 15 shown.

[0068] Furthermore, the auxiliary discharge plate 83 moves outward from the inside of the receiving groove 82 and enters the lower position inside the extrusion groove 2.

[0069] When the present embodiment is in use, before the hydraulic lifting seat 3 returns, the hydraulic rod 833 in the storage groove 82 is first slowly recovered to act on the auxiliary unloading plate 83. Due to the force arm action, the small hydraulic cylinder 832 and the auxiliary unloading plate 83 are turned over together (the connecting part 84 rotates around the two sets of damping bearing seats 86) and extend out from the inside and outside of the storage groove 82 at an angle. At this time, the hydraulic lifting seat 3 is allowed to return upward. With the help of its powerful upward force, the rectangular guide column 80 moves upward along the rectangular long groove 81. The pressure wheel 87 on the auxiliary unloading plate 83 contacts the bottom of the head during the upward movement (the upward movement speed is slow and the collision force is small). A relative force is generated between the two. At the same time, the hydraulic action of the unloading ejector is cooperated to make the head and the extrusion groove 2 produce relative movement. At this time, the hydraulic rod 833 is extended again, and the small hydraulic cylinder 832 and the auxiliary unloading plate 83 are turned over and recovered in the storage groove 82 together, thereby not interfering with the continued upward movement of the rectangular guide column 80.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength titanium alloy head, characterized in that: The invention comprises a head base, which is formed by cold pressing of a titanium alloy plate (8), has a compressive strength of ≥900MPa, and a yield strength of ≥83000MPa. The head base is a hemispherical shell structure, has a radius of 150-160mm, and a thickness of 4.6-4.7mm. A straight edge section is arranged at the edge of the hemispherical shell structure, and the straight edge section has the same thickness as the hemispherical shell. The surface of the head base is covered with a micro-arc oxidation ceramic layer, the ceramic layer has a thickness of 1030μm, a porosity of ≤5%, and contains a composite phase of TiO2 and Al2O3 distributed in a gradient.

2. A high-strength titanium alloy head forming device, applied to the high-strength titanium alloy head according to claim 1, comprising a die base (1), characterized in that: An extrusion groove (2) is provided in the middle of the die base (1) and extends upwards. A hydraulic lift seat (3) is movably provided above the extrusion groove (2). A cold pressing die (5) for acting on the titanium alloy plate (8) is movably provided on the lower end surface of the hydraulic lift seat (3). Connecting arms (90) are evenly distributed around the outer side surface of the hydraulic lift seat (3). Guide holes (91) are provided in each group of the connecting arms (90). Guide columns (92) are passed through each group of the guide holes (91). The guide columns (92) are welded to the lower end surface of the forming top seat (6). The horizontal right side of the mold base (1) is connected to a feed table (10), a push seat (11) is riveted to the right position of the upper end surface of the feed table (10), the upper end of the push seat (11) is connected to a limit cylinder shell (12), a limit rod groove (23) is provided in the interior of the push seat (11) to the left, a push rod (21) is movably provided in the limit rod groove (23), a clamping plate seat (24) for acting on the titanium alloy plate (8) is welded to the end of the push rod (21) located outside the limit rod groove (23), a horizontal groove (7) for the clamping plate seat (24) to move is provided at the middle position of the upper end surface of the feed table (10) and the mold base (1), and a plurality of side positioning wheels (93) are symmetrically distributed on the upper end surface of the feed table (10) and on both sides of the titanium alloy plate (8); Two groups of screw rod mounting seats (30) are symmetrically and vertically mounted on the outer side surface of the feed table (10), and a lifting inner groove (31) is vertically opened on the inner side surface of each group of the screw rod mounting seats (30). A long screw rod (33) is vertically mounted inside each group of the lifting inner groove (31), and the two ends of the long screw rod (33) are connected to the inner wall of the screw rod mounting seat (30) by means of a first bearing seat (34). The long screw rod (33) extends upward from the screw rod mounting seat (30) and is sleeved with a sprocket (35). The two groups of sprockets (35) are connected by means of a chain (36). The transmission is connected, wherein the lower end of one group of the long screw rods (33) extends downward and is connected to a screw motor (37) through a coupling, and a lubricant adding seat (40) is movably arranged at the middle position of the two groups of the screw rod mounting seats (30), and the two ends of the lubricant adding seat (40) are symmetrically provided with moving arms (41), and the interior of the moving arms (41) is provided with a screw nut sleeve (42) that acts on the long screw rod (33), and the lower end edge of the lubricant adding seat (40) is symmetrically riveted with two groups of positioning baffles (46) that act on the titanium alloy plate (8).

3. The high-strength titanium alloy head forming equipment according to claim 2 is characterized in that: A rotating roller (13) is rotatably arranged in the limiting cylinder shell (12), and short shafts (14) are symmetrically welded at the left and right ends of the rotating roller (13). Each group of the short shafts (14) is connected to the inner wall of the limiting cylinder shell (12) by means of a second bearing seat (15). A large gear (16) is sleeved on the right side of the short shaft (14) extending outward, and a small gear (17) is meshed with the lower end of the large gear (16). The small gear (17) is sleeved on the output shaft of a first servo motor (18). The first servo motor (18) is horizontally arranged through the outer side surface of the pusher seat (11). A curved rotary groove (20) is opened on the roller surface of the rotating roller (13), and a No. 1 slider (22) extending into the curved rotary groove (20) is welded on the right end of the pusher rod (21).

4. The high-strength titanium alloy head forming equipment according to claim 2 is characterized in that: A clamping cylinder (25) is installed on the upper end surface of the clamping plate seat (24), and a cylinder rod (26) is movably provided in the interior of the clamping cylinder (25) extending downward, and a movable curved clamping piece (28) is welded to the lower end of the cylinder rod (26). An adjustment groove (27) for the movable curved clamping piece (28) to move up and down is formed on the inner side surface of the clamping plate seat (24), and a curved clamping groove (29) for the edge of the titanium alloy plate (8) to extend into is formed between the movable curved clamping piece (28) and the bottom of the clamping plate seat (24), and the curved clamping groove (29) and two sets of positioning baffles (46) limit and clamp the titanium alloy plate (8).

5. The high-strength titanium alloy head forming equipment according to claim 2, characterized in that: An isolation seat (43) is arranged at the middle position inside the lubricant adding seat (40), an annular shell (44) is fixed upward inside the isolation seat (43), an eccentric crank disk (50) is movably arranged inside the annular shell (44), an annular slide groove (51) is provided on the front end surface of the eccentric crank disk (50), a rotating shaft (52) is horizontally welded at an eccentric position on the back side of the eccentric crank disk (50), the rotating shaft (52) passes through the annular shell (44) and is connected to a second servo motor (53) by means of a coupling, a motor seat (45) is sleeved on the outer side of the second servo motor (53), the motor seat (45) is riveted to the annular shell (44), and an opening (54) is provided at a lower position of the end surface of the annular shell (44) away from the motor seat (45).

6. The high-strength titanium alloy head forming equipment according to claim 5, characterized in that: A square limiting sleeve (60) is riveted inside the isolation seat (43), a square driving seat (61) is movably arranged inside the square limiting sleeve (60), a second slider (62) extending into the annular slide groove (51) is rotatably arranged at the upper end of the square driving seat (61), an injection barrel (63) is connected to the lower end of the square driving seat (61), the injection barrel (63) extends downward from the lower end surface of the isolation seat (43), a porous material sprinkling joint (64) is installed at the lower end of the injection barrel (63), the porous material sprinkling joint (64) is located directly above the titanium alloy plate (8), and a plurality of groups of pressing holes (69) are evenly arranged on the porous material sprinkling joint (64), a pressing rod (65) extending into the injection barrel (63) is welded to the lower end of the square driving seat (61), and a circular arc punch head (66) is welded to the lower end of the pressing rod (65).

7. The high-strength titanium alloy head forming equipment according to claim 6, characterized in that: An external gear seat (70) is rotatably arranged inside the lubricant adding seat (40), and gear teeth are evenly arranged on the outer side surface of the external gear seat (70). A driving gear (95) is meshed with one side of the gear teeth, and the driving gear (95) is sleeved on the output shaft of a uniform speed motor (96). The uniform speed motor (96) is vertically arranged through the upper end surface of the lubricant adding seat (40). The upper and lower end surfaces of the external gear seat (70) are both provided with an annular wheel groove (71). A guide wheel extending into the annular wheel groove (71) is fixed inside the lubricant adding seat (40), and a through opening (72) for the isolation seat (43) to pass through is opened in the middle of the external gear seat (70).

8. The high-strength titanium alloy head forming equipment according to claim 7 is characterized in that: A connecting column (73) is vertically welded to the lower end surface of the external gear seat (70), and a rolling bearing (74) is sleeved on the outer side surface of the connecting column (73). An annular motion track (47) is provided at the lower end surface of the lubricant adding seat (40) and located on the outer side surface of the isolation seat (43). The annular motion track (47) is provided for the movement of the rolling bearing (74). A rotating motor seat (75) is welded to the lower end of the connecting column (73), and a rotating motor is vertically installed inside the rotating motor seat (75). The output end of the rotating motor is connected to a rotating roller frame (77) via an extension shaft (76). A coating roller (78) is rotatably arranged inside the rotating roller frame (77), and a portion of the coating roller (78) extends out of the rotating roller frame (77) to act on the upper end surface of the titanium alloy plate (8).

9. The high-strength titanium alloy head forming equipment according to claim 2, characterized in that: Two groups of rectangular guide columns (80) are symmetrically welded to the lower end surface of the hydraulic lifting seat (3); a rectangular long groove (81) for the rectangular guide column (80) to move is opened upward inside the die seat (1); the lower half of the rectangular long groove (81) is connected to the inside of the extrusion groove (2); a receiving groove (82) is vertically opened at the lower position of the inner side surface of the rectangular guide column (80); an auxiliary unloading plate (83) is rotatably arranged in the receiving groove (82); a connecting portion (84) is arranged at the lower end of the auxiliary unloading plate (83); two groups of positioning shafts (85) are symmetrically welded to the two side surfaces of the connecting portion (84); each group of the positioning shafts (85) is fixed by a damping bearing seat (86) and the groove wall of the receiving groove (82); a pressure wheel groove is opened at the upper end of the auxiliary unloading plate (83); a pressure wheel (87) acting on the head is rotatably arranged in the pressure wheel groove.

10. The high-strength titanium alloy head forming equipment according to claim 9, characterized in that: A first articulated frame (831) is provided at the bottom of the storage groove (82), the first articulated frame (831) is connected to the lower end of a small hydraulic cylinder (832), a hydraulic rod (833) is provided inside the small hydraulic cylinder (832) for upward movement, a connecting plug is provided at the end of the hydraulic rod (833), a second articulated frame (834) is installed at the middle of the back side of the auxiliary unloading plate (83), and the second articulated frame (834) is connected to the connecting plug.

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