CN113000641B - Titanium alloy square tube integrated forming device and method - Google Patents
Titanium alloy square tube integrated forming device and method Download PDFInfo
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- CN113000641B CN113000641B CN202110182172.5A CN202110182172A CN113000641B CN 113000641 B CN113000641 B CN 113000641B CN 202110182172 A CN202110182172 A CN 202110182172A CN 113000641 B CN113000641 B CN 113000641B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/008—Bending sheet metal along straight lines, e.g. to form simple curves combined with heating or cooling of the bends
Abstract
The invention provides a titanium alloy square tube integrated forming device and method. The titanium alloy square tube integrated forming device comprises a bottom die, and an upper die, a preforming die and a profiling die which are matched with the profiling of the bottom die respectively, wherein the upper die and the preforming die are arranged on the upper side of the bottom die and are connected through a transverse moving mechanism, and two ends of the profiling die are installed on the bottom side of the upper die through a rotating mechanism one by one. According to the invention, the transverse moving mechanism is used for realizing the switching between the compression mould and the preforming mould, the rotating mechanism is used for realizing the switching between the compression mould and the upper mould, repeated demoulding and mould filling of the titanium alloy plate are not needed, the integral forming is realized, the operation is simple, the surface quality of the titanium alloy pipe forming is improved, the working efficiency and the forming precision are improved, and the automatic mass production is easy to realize.
Description
Technical Field
The invention relates to the technical field of titanium alloy square tube forming dies, in particular to a titanium alloy square tube integrated forming device and method.
Background
Titanium alloys have a low density and a high specific strength, and thus cannot be substituted for lightweight structures. The titanium steel weight reduction scheme is adopted for the welded structural member, the weight reduction can reach more than 40%, and the effect is obvious.
Sigma of titanium alloy p0.2 /σ b High ratio, σ b Large, epsilon j Very small, high deformation resistance required, very rapid increase in brittleness, easy cracking, and E/sigma p0.2 The ratio is low, the resilience is serious, the manual finishing is extremely difficult, and the forming is difficult, so the cold forming performance of the titanium alloy is poorer than that of common metals, and a hot forming scheme is generally adopted.
The existing molding scheme of the special-shaped titanium alloy square tube is as follows:
(1) Performing by using a mold I;
(2) Replacing the second die and forming a U shape;
(3) Transversely withdrawing the die, and hammering and demoulding the square tube;
(4) An inner die (three tool dies in different shapes are combined for use) is added into the square tube;
(5) Replacing the mold III, and forming a square tube;
(6) The square tube is removed from the inner die;
(7) The square tube is withdrawn from the bottom die;
(8) Adding the inner mold into the square tube again, reversely pressing and shaping;
(9) The square tube retreats from the inner die and the square tube retreats from the bottom die.
The prior scheme has the following defects:
(1) The efficiency is low: the molding scheme has more working procedures, flame heating is needed when the mold is repeatedly withdrawn and the square tube is molded, the operation process is complicated, the square tube is demoulded by strong force operation such as hammering, the working efficiency is low, and a single device is used for molding the special-shaped titanium alloy square tube only about 30 meters every day;
(2) Poor forming precision: the titanium alloy has large resilience, so that the forming angle cannot be accurately ensured in the middle process, and the square tube needs to be subjected to powerful operation when being withdrawn from the die, so that the integral forming precision is poor;
(3) Is not beneficial to mass production: the mould is instead changed in each process link, needs many people concurrent operation, wastes time and energy, is unfavorable for realizing automated production, and the productivity receives very big restriction.
Disclosure of Invention
The invention provides a titanium alloy square tube integrated forming device and method, which are used for solving the defects of complicated forming process and low efficiency of a special-shaped titanium alloy square tube in the prior art, realizing the integrated forming of the titanium alloy square tube, reducing the times of repeatedly replacing a die and improving the working efficiency.
The invention provides a titanium alloy square tube integrated forming device which comprises a bottom die, an upper die, a preforming die and a profiling die, wherein the upper die, the preforming die and the profiling die are respectively matched with the profiling of the bottom die, the upper die and the preforming die are arranged on the upper side of the bottom die and are connected through a transverse moving mechanism, and two ends of the profiling die are arranged on the bottom side of the upper die through rotating mechanisms one by one.
According to the integrated forming device for the titanium alloy square pipe, the bottom die is provided with the pre-forming die cavity matched with the pre-forming die in a compression mode and the compression die cavity matched with the compression mode, the compression die cavity is arranged in the pre-forming die cavity, and openings of the compression die cavity and the pre-forming die cavity are located on the upper side of the bottom die.
According to the titanium alloy square tube integrated forming device provided by the invention, the side wall of the preforming mold cavity is outwards inclined, and two ends of the bottom side of the preforming mold are fitted with the side wall of the preforming mold cavity.
According to the titanium alloy square tube integrated forming device provided by the invention, the connecting parts of the bottom of the profiling mold cavity and the two side walls of the profiling mold cavity are respectively provided with a first fillet, and the connecting parts of the two side walls of the profiling mold cavity and the bottom of the preforming mold cavity are respectively provided with a second fillet.
According to the titanium alloy square tube integrated forming device provided by the invention, the rotating mechanism comprises a first side beam, a second side beam and a bottom beam, two ends of the bottom beam are respectively and rotatably connected with a first end of the first side beam and a first end of the second side beam, a second end of the first side beam is connected with a first side of the upper die, a second end of the second side beam is connected with a second side of the upper die, which is opposite to the first side of the upper die, and the end part of the profiling die is lapped with the bottom beam.
According to the titanium alloy square tube integrated forming device provided by the invention, the rotating mechanism further comprises a limiting block, and the limiting block is arranged between the upper side of the profiling mold and the lower side of the upper mold and clamped between the first side beam and the second side beam.
According to the titanium alloy square pipe integrated forming device provided by the invention, the magnet is embedded in the joint side of the profiling mold and the first side beam.
According to the integrated forming device for the titanium alloy square tube, provided by the invention, the heating rod is arranged in the compression mould, and the heating rod is embedded into the compression mould along the length direction of the compression mould.
According to the integrated forming device for the titanium alloy square tube, the transverse moving mechanism comprises a screw rod, a first nut and a second nut, the first nut and the second nut are arranged on the screw rod in a penetrating mode, the first nut is connected with the upper die, and the second nut is connected with the preforming die.
The invention also provides an integrated forming method of the titanium alloy square tube, which comprises the following steps:
placing a titanium alloy plate on the bottom die;
adjusting the pre-forming mold to the upper side of the bottom mold through the transverse moving mechanism, pressing the pre-forming mold to be in compression fit with the bottom mold, and pre-pressing the titanium alloy plate into a first shape;
adjusting the upper mold to the upper side of the bottom mold through the transverse moving mechanism, enabling the profiling mold to be opposite to the bottom mold, pressing the upper mold downwards, enabling the profiling mold to be in profiling fit with the bottom mold, and profiling the titanium alloy plate in the first form into a second form;
and adjusting the profiling mold to separate from the second form of the titanium alloy plate through the rotating mechanism, and continuously pressing the upper mold downwards to enable the upper mold to be in profiling fit with the bottom mold so as to profile the second form of the titanium alloy plate into a square pipe.
The invention provides a titanium alloy square tube integrated forming device and method, which are characterized in that a bottom die, an upper die, a preforming die and a profiling die which are respectively matched with the profiling of the bottom die are arranged, the upper die and the preforming die are arranged on the upper side of the bottom die and are connected through a transverse moving mechanism, two ends of the profiling die are arranged on the bottom side of the upper die one by one through a rotating mechanism, the transverse moving mechanism realizes the switching between the profiling die and the preforming die, the rotating mechanism realizes the switching between the profiling die and the upper die, repeated demoulding and die filling of a titanium alloy plate are not needed, the titanium alloy square tube integrated forming device and method are simple in operation, the surface quality of titanium alloy tube forming is improved, the working efficiency and the forming precision are improved, and automatic mass production is easy to realize.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a left side view of the titanium alloy square tube integral forming device provided by the invention;
FIG. 2 is a sectional view of the titanium alloy square tube integral forming device provided by the invention;
FIG. 3 is a schematic structural view of a bottom mold in the titanium alloy square tube integrated molding device provided by the invention;
FIG. 4 is a right side view of the middle sole mold of the titanium alloy square tube integrated molding device provided by the invention;
FIG. 5 is a schematic structural diagram of a preforming mold in the titanium alloy square tube integral forming device provided by the invention;
FIG. 6 is a front view of a compression mold in the titanium alloy square tube integrated molding device provided by the invention;
FIG. 7 is a left side view of a medium-pressure die of the titanium alloy square tube integral molding device provided by the invention;
FIG. 8 is a schematic structural view of a rotating mechanism in the titanium alloy square tube integral forming device provided by the invention;
FIG. 9 is a front view of a limiting block in the titanium alloy square tube integral molding device provided by the invention;
FIG. 10 is a longitudinal sectional view of a limiting block in the titanium alloy square tube integral molding device provided by the invention;
FIG. 11 is a schematic view of a forming structure sequence of a titanium alloy plate in the titanium alloy square tube integral forming method provided by the invention;
reference numerals:
100: a bottom mold; 110: pre-forming a die cavity; 111: an inclined side wall; 120: profiling a die cavity; 121: a first rounded corner; 122: a second fillet; 200: an upper die; 300: performing a mold; 310: inclining an end angle; 400: profiling a mold; 410: a heating rod; 420: a magnet; 500: a traversing mechanism; 600: a rotation mechanism; 610: a first side member; 611: a first pin hole; 612: perforating; 613: a first ball bearing; 620: a second side member; 621: a second pin hole; 622: a third pin hole; 630: a bottom beam; 631: a second ball bearing; 700: a limiting block; 710: a tenon joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The titanium alloy square tube integral forming device of the invention is described with reference to fig. 1 to fig. 10, and comprises a bottom mold 100, and an upper mold 200, a pre-forming mold 300, and a pressing mold 400 respectively matched with the bottom mold 100 in a pressing manner, wherein the upper mold 200 and the pre-forming mold 300 are both arranged on the upper side of the bottom mold 100 and connected through a traversing mechanism 500, and two ends of the pressing mold 400 are mounted on the bottom side of the upper mold 200 through a rotating mechanism 600. It can be understood that the bottom die 100 is used for supporting the titanium alloy plate to be compression molded, and is provided with a molding groove. The upper mold 200 and the preforming mold 300 are located on the upper side of the bottom mold 100 and are connected by the traversing mechanism 500, that is, the traversing mechanism 500 drives the traversing of the upper mold 200 and the preforming mold 300, so that the preforming mold 300 and the upper mold 200 are respectively replaced with the bottom mold 100 in a profiling matching manner, and the profiling at different stages is completed. Two ends of the profiling mold 400 are respectively mounted on the bottom side of the upper mold 200 through the rotating mechanism 600, and the profiling mold 400 and the upper mold 200 are respectively replaced with the profiling mold 100 of the bottom mold through the rotation of the rotating mechanism 600, so that the compression molding of the titanium alloy plate is realized.
Specifically, the transverse moving mechanism 500 drives the upper mold 200 and the preforming mold 300 to transversely move, so that the preforming mold 300 is opposite to the bottom mold 100, and preforming of the titanium alloy plate is completed; the position of the upper die 200 is adjusted by the traversing mechanism 500, so that the profiling die 400 at the bottom side of the upper die 200 is opposite to the bottom die 100, and profiling molding is further completed; the position of the profiling mold 400 is adjusted by the rotating mechanism 600, so that the profiling mold 400 is separated from the titanium alloy plate, the upper mold 200 and the bottom mold 100 perform profiling, and the forming of the titanium alloy square pipe is completed. That is to say, the spatial positions of the upper die 200, the preforming die 300 and the profiling die 400 are replaced through operation, repeated operation of stripping and die filling of the titanium alloy plate is omitted, manpower and material resources are saved, the titanium alloy plate is integrally formed, the operation is simple, the surface quality of the titanium alloy pipe is improved, the working efficiency and the forming precision are improved, and automatic mass production is easy to realize.
According to the integrated forming device for the titanium alloy square tube provided by the invention, the bottom die 100 is provided with the pre-forming die cavity 110 matched with the pre-forming die 300 in a pressing mode and the pressing die cavity 120 matched with the pressing die 400 in a pressing mode, the pressing die cavity 120 is arranged in the pre-forming die cavity 110, and the openings of the pressing die cavity 120 and the pre-forming die cavity 110 are positioned on the upper side of the bottom die 100. It can be understood that, the upper side of the bottom mold 100 is provided with a pre-forming mold cavity 110, and the pre-forming mold cavity 110 is adapted to the shape of the pre-forming mold 300, so as to realize the pre-forming shape of the titanium alloy plate. The upper side of the bottom mold 100 is provided with a profiling mold cavity 120, and the profiling mold cavity 120 is adapted to the profiling mold 400, so as to realize profiling of the titanium alloy plate subjected to pre-press molding. It should be noted that, the pre-forming mold cavity 110 and the profiling mold cavity 120 are both concave-shaped grooves, the pre-forming mold cavity 110 is disposed on the upper surface of the bottom mold 100, and the profiling mold cavity 120 is disposed in the pre-forming mold cavity 110 and located at the center of the pre-forming mold cavity 110, that is, the center of the pre-forming mold cavity 110 and the center of the profiling mold cavity 120 are located on the vertical center line of the bottom mold 100, so that the pre-forming and profiling molding process can be completed without performing a mold stripping operation on the titanium alloy plate.
According to the titanium alloy square tube integral forming device provided by the invention, the side wall of the preforming mold cavity 110 inclines outwards, and two ends of the bottom side of the preforming mold 300 are fitted with the side wall of the preforming mold cavity 110. It can be understood that the preforming mold cavity 110 is provided with an inclined side wall 111 which is inclined outwards, two ends of the bottom side of the preforming mold 300 are respectively provided with an inclined end angle 310, and the inclined end angles 310 are fitted and adapted to the inclined side wall 111, so that the titanium alloy plate is subjected to pre-compression molding, and an R angle is formed at a corresponding position of the titanium alloy plate through compression molding.
According to the integrated forming device for the titanium alloy square pipe, provided by the invention, first fillets 121 are arranged at the joints of the bottom of the profiling mold cavity 120 and the two side walls of the profiling mold cavity, and second fillets 122 are arranged at the joints of the two side walls of the profiling mold cavity 120 and the bottom of the preforming mold cavity 110. It can be understood that, the groove bottom and the lateral wall junction of profiling chase 120 are equipped with first radius angle 121, the opening side of profiling chase 120, namely, the junction of the lateral wall of profiling chase 120 and the groove bottom of preforming chase 110 is equipped with second radius angle 122, through setting up first radius angle 121 and second radius angle 122, when being used for improving the suppression of profiling mould 400, provide anti-deformation, improve the shaping effect, second radius angle 122 plays interference fit's effect simultaneously, improve the quality of press forming's titanium alloy square pipe.
According to the titanium alloy square tube integral forming device provided by the invention, the rotating mechanism 600 comprises a first side beam 610, a second side beam 620 and a bottom beam 630, two ends of the bottom beam 630 are respectively rotatably connected with a first end of the first side beam 610 and a first end of the second side beam 620, a second end of the first side beam 610 is connected with a first side of the upper die 200, a second end of the second side beam 620 is connected with a second side of the upper die 200 opposite to the first side, and an end part of the profiling die 400 is overlapped with the bottom beam 630. It is understood that the rotating mechanism 600 includes a first side beam 610 and a second side beam 620 which are vertically disposed, and the first side beam 610 and the second side beam 620 are oppositely disposed at both back sides of the upper mold 200. A second end, i.e., the upper end, of the first side beam 610 is provided with a first pin hole 611, the first side of the upper mold 200 is provided with a jack corresponding to the first pin hole 611, and a pin shaft is inserted into the first pin hole 611, so that the second end of the first side beam 610 is rotatably connected with the first side of the upper mold 200. A second pin hole 621 is formed in a second end, i.e., the upper end, of the second side beam 620, a second side of the upper die 200 opposite to the first side of the upper die is provided with a plug hole corresponding to the second pin hole 621, and a pin shaft is inserted into the second pin hole 621, so that the second end of the second side beam 620 is rotatably connected with the second side of the upper die 200.
Both ends of the bottom beam 630 are rotatably connected to a first end, i.e., a lower end, of the first side beam 610 and a first end, i.e., a lower end, of the second side beam 620, respectively, so that the bottom beam 630 is rotatably switched between a horizontal state and a vertical state. Specifically, a first end of the first side beam 610 is provided with a horizontally arranged fourth pin hole, a second end of the second side beam 620 is provided with a horizontally arranged third pin hole 622 opposite to the fourth pin hole, and the bottom beam 630 is provided with a through hole matched with the third pin hole 622 and the fourth pin hole in a penetrating manner through the pin shaft, so that the bottom beam 630 can rotate around the pin shaft.
In one embodiment, when the outer side of the bottom beam 630, that is, the pressing mold 400 and the pressing mold cavity 120 are pressed, the second ball 631 is disposed on the side of the bottom beam 630 contacting the titanium alloy plate, and the first ball 613 is embedded in the first end of the first side beam 610, it can be understood that the first ball 613 is embedded in the side of the first end of the first side beam 610 contacting the titanium alloy plate, and by disposing the first ball 613 and the second ball 631, in the demolding process, the bottom beam 630 and the first side beam 610 slide relative to the contacting side of the titanium alloy square tube, thereby facilitating demolding.
According to the titanium alloy square tube integrated molding device provided by the invention, the rotating mechanism 600 further comprises a limiting block 700, and the limiting block 700 is arranged between the upper side of the profiling mold 400 and the lower side of the upper mold 200 and clamped between the first side beam 610 and the second side beam 620. It can be understood that the limiting block 700 is disposed between the profiling mold 400 and the upper mold 200 in a drawable manner, and the limiting block 700 may be disposed as a whole body integrally adapted to the profiling mold 400, or disposed as two, and disposed at two ends of the profiling mold 400 respectively, so as to improve stability. Specifically, the stopper 700 is disposed in a stopper space formed between the first side beam 610, the second side beam 620, the upper side of the profiling mold 400, and the bottom side of the upper mold 200. After the profiling mold 400 completes profiling, the limiting block 700 is pulled out, the bottom beam 630 is rotated, the bottom beam 630 is switched from a horizontal state to a vertical state, the upper side of the profiling mold 400 is attached to the bottom side of the upper mold 200, the height of the bottom beam 630 in the vertical state is the same as that of the limiting block 700, height compensation is formed, and the profiling mold 400 is always fixed. At this time, the profiling mold 400 is separated from the titanium alloy plate, and the upper mold 200 is pressed down, thereby completing the profiling of the upper mold 200 and the lower mold 100.
In one embodiment, the upper side of the limiting block 700 is provided with a tenon joint 710, and the bottom side of the upper mold 200 is provided with a tenon joint groove matched with the tenon joint 710, so that the installation strength of the limiting block 700 is ensured, the pulling out is convenient, the operation is simple, and the compression switching between the compression mold 400 and the upper mold 200 is realized.
According to the integrated forming device for the titanium alloy square tube, provided by the invention, the magnet 420 is embedded in the joint side of the profiling mold 400 and the first side beam 610. It can be understood that magnets 420 are respectively embedded at two ends of the profiling mold 400, the first side beam 610 is correspondingly provided with the through hole 612, the magnets 420 are conveniently installed at the end portion of the profiling mold 400, so that the profiling mold 400 and the bottom mold 100 are accurately positioned, and the accuracy of forming the titanium alloy square tube is improved. The magnet 420 is disposed in a direction perpendicular to the length direction of the profiling mold 400.
According to the integrated forming device for the titanium alloy square pipe, provided by the invention, the heating rod 410 is arranged in the profiling mold 400, and the heating rod 410 is embedded into the profiling mold 400 along the length direction of the profiling mold 400. It can be understood that the profiling mold 400 is provided with a mounting hole along the length direction thereof, and the heating rod 410 is embedded in the mounting hole to heat the profiling mold 400 so as to reduce springback of the titanium alloy square pipe during molding, improve molding accuracy and ensure molding efficiency.
According to the integrated forming device for the titanium alloy square tube provided by the invention, the traversing mechanism 500 comprises a screw rod, a first nut and a second nut, wherein the first nut and the second nut are arranged on the screw rod in a penetrating manner, the first nut is connected with the upper die 200, and the second nut is connected with the preforming die 300. It can be understood that, the first nut and the second nut move horizontally by rotating the screw rod, and then the corresponding upper die 200 and the preforming die 300 are driven to move horizontally, so that the dies are replaced, and different profiling stages are completed. It should be noted that other traversing mechanisms 500 may be used, such as rack and motor driven rotary or hydraulic driven shafts.
The titanium alloy square tube integrated forming device further comprises a demolding mechanism, wherein the demolding mechanism comprises a demolding table, the demolding table is provided with a U-shaped groove matched with the profiling mold 400, the depth of the U-shaped groove is one third of the height of the profiling mold 120, and the bottom of the U-shaped groove is matched with the bottom side of the profiling mold 120 in a fit mode. One end of the demolding table is provided with an avoidance area which is adaptive to the rotary mechanism 600 in an avoidance mode, the other end of the demolding table is connected with the pneumatic push rod, the demolding table is driven, and the pressed titanium alloy square tube is separated from the profiling mold 400.
The following describes an integrated forming method of a titanium alloy square tube according to the present invention, and the integrated forming method of a titanium alloy square tube described below and the integrated forming device of a titanium alloy square tube described above may be referred to with each other.
The invention is described below with reference to fig. 11, and further provides a method for integrally forming a titanium alloy square tube, which comprises the following steps:
placing a titanium alloy sheet material on the bottom mold 100;
adjusting the pre-forming mold 300 to the upper side of the bottom mold 100 through the traversing mechanism 500, and pressing the pre-forming mold 300 to be in compression fit with the bottom mold 100, so as to pre-press the titanium alloy plate into a first shape;
adjusting the upper mold 200 to the upper side of the bottom mold 100 through the traversing mechanism 500, and pressing the upper mold 200 downward with the pressing mold 400 opposite to the bottom mold 100, so that the pressing mold 400 is in pressing fit with the bottom mold 100, and the titanium alloy plate in the first form is pressed into the second form;
the rotating mechanism 600 is used for adjusting the profiling mold 400 to separate from the second shape of the titanium alloy plate, and the upper mold 200 is continuously pressed downwards, so that the upper mold 200 is in profiling fit with the bottom mold 100, and the second shape of the titanium alloy plate is profiled into a square pipe.
The invention provides an integrated forming method of a titanium alloy square tube, which comprises the following specific steps:
the titanium alloy plate needs to be pressed to be 0.8mm in thickness, 520mm in length and 52mm multiplied by 30mm in large end specification; the special-shaped titanium alloy square tube with the specification of 35mm multiplied by 30mm at the small end.
Placing the titanium alloy plate A on a pre-forming die cavity 110 of the bottom die 100, and corresponding a large end and a small end of the titanium alloy plate A to the large end and the small end of the pre-forming die cavity 110;
adjusting the pre-forming mold 300 to be right above the bottom mold 100 through the traversing mechanism 500, opposite to the pre-forming mold cavity 110, pressing the pre-forming mold 300 downwards, and pressing the titanium alloy plate A between the pre-forming mold 300 and the pre-forming mold cavity 110 into a first type titanium alloy plate B, wherein two long sides of the titanium alloy plate form an R angle;
the upper die 200 is adjusted to be right above the bottom die 100 through the transverse moving mechanism 500 without adjusting the first type of titanium alloy plate, and the profiling die 400 is opposite to the profiling die cavity 120, wherein the profiling die 400 and the profiling die cavity 120 are both of a structure with one wide end and the other narrow end, so that profiling is realized into a special-shaped square tube;
starting the heating rod 410, preferably, the heating rod 410 is arranged at the wide head end of the profiling mold 400, heating the profiling mold 400 to 300 ℃, pressing down the upper mold 200, pressing down the large head end of the first type titanium alloy plate at the wide head end of the profiling mold 400 into the wide head end of the profiling mold cavity 120, and pressing down the small head end of the first type titanium alloy plate at the narrow head end of the profiling mold 400 into the narrow head end of the profiling mold cavity 120;
the length of the upper mold 200 is greater than that of the bottom mold 100, so that the rotating mechanism 600 does not interfere with the bottom mold 100 when the upper mold 200 is pressed down;
the profiling die 400 presses the first type of titanium alloy plate downwards in the profiling die cavity 120 for 10-20 seconds, so that the deformation resistance of the titanium alloy plate is reduced, the deformation degree of the titanium alloy plate in the forming process is increased, the elastic resilience is reduced, the forming accuracy of the square pipe is improved, and the forming accuracy is increased;
the magnets 420 at the two ends of the profiling mold 400 realize the positioning precision of the profiling mold 400 and the profiling cavity 120, and avoid repeatedly adjusting the position of the mold;
pressing the titanium alloy plate B of the first type into a titanium alloy plate C of a second type;
the limiting block 700 is pulled out, the bottom beam 630 is rotated, the bottom beam 630 is adjusted from a horizontal state to a vertical state, at the moment, the bottom beam 630 compensates for the height loss of the limiting block 700 in the vertical state, the upper side of the profiling mold 400 is attached to the bottom side of the upper mold 200, and the profiling mold 400 is separated from the inner bottom side of the second type titanium alloy plate;
pressing the upper die 200 downwards, wherein the bottom side of the upper die 200 is in contact with the upper side of the second type titanium alloy plate, flattening the R angle pressed by the preforming die 300, and pressing to form a final type special-shaped titanium alloy square tube D;
the pneumatic push rod pushes the demolding table to be close to the profiling mold 400, after the avoiding area of the demolding table avoids the rotating mechanism 600, the bottom side of the profiling mold 400 is attached to the bottom of the U-shaped groove of the demolding table, the side wall of the demolding table abuts against the titanium alloy square pipe in the final shape and moves together with the demolding table, and therefore the titanium alloy square pipe in the final shape is completely separated from the profiling mold 400, and integrated molding is completed.
The invention provides a titanium alloy square tube integrated forming device and method, which are characterized in that a bottom die, an upper die, a preforming die and a profiling die which are respectively matched with the profiling of the bottom die are arranged, the upper die and the preforming die are arranged on the upper side of the bottom die and are connected through a transverse moving mechanism, two ends of the profiling die are arranged on the bottom side of the upper die one by one through a rotating mechanism, the transverse moving mechanism realizes the switching between the profiling die and the preforming die, the rotating mechanism realizes the switching between the profiling die and the upper die, repeated demoulding and die filling of a titanium alloy plate are not needed, the titanium alloy square tube integrated forming device and method are simple in operation, the surface quality of titanium alloy tube forming is improved, the working efficiency and the forming precision are improved, and automatic mass production is easy to realize.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The titanium alloy square pipe integrated forming device is characterized by comprising a bottom die, an upper die, a preforming die and a profiling die, wherein the upper die, the preforming die and the profiling die are respectively matched with the profiling of the bottom die, the upper die and the preforming die are arranged on the upper side of the bottom die and are connected through a transverse moving mechanism, and two ends of the profiling die are arranged on the bottom side of the upper die one by one through a rotating mechanism;
the bottom die is provided with a pre-forming die groove matched with the pre-forming die in a profiling mode and a profiling die groove matched with the profiling die in the profiling mode, the profiling die groove is arranged in the pre-forming die groove, and openings of the profiling die groove and the pre-forming die groove are located on the upper side of the bottom die;
the side wall of the preforming mold cavity inclines outwards, and two ends of the bottom side of the preforming mold are fitted with the side wall of the preforming mold cavity;
the rotary mechanism comprises a first side beam, a second side beam and a bottom beam, two ends of the bottom beam are rotatably connected with a first end of the first side beam and a first end of the second side beam respectively, a second end of the first side beam is connected with a first side of the upper die, a second end of the second side beam is connected with a second side of the upper die, which is opposite to the first side of the upper die, and the end part of the profiling die is overlapped with the bottom beam;
the rotating mechanism further comprises a limiting block, and the limiting block is arranged between the upper side of the profiling mold and the lower side of the upper mold and clamped between the first side beam and the second side beam;
specifically, the limiting blocks are arranged in limiting spaces formed between the upper sides of the first side beam, the second side beam and the compression mold and the bottom side of the upper mold, after the compression mold is completed, the limiting blocks are drawn out, the bottom beam is rotated to be switched from a horizontal state to a vertical state, the upper side of the compression mold is attached to the bottom side of the upper mold, the height of the bottom beam in the vertical state is the same as that of the limiting blocks, height compensation is formed, and the compression mold can be kept fixed.
2. The titanium alloy square pipe integrated molding device as claimed in claim 1, wherein the joints of the bottom of the profiling cavity and the two side walls of the profiling cavity are provided with first rounded corners, and the joints of the two side walls of the profiling cavity and the bottom of the preforming cavity are provided with second rounded corners.
3. The integrated molding device for the titanium alloy square pipe as claimed in claim 1, wherein a magnet is embedded in the pressing mold and the attaching side of the first side member.
4. The integrated molding device for the titanium alloy square tubes according to claim 1, wherein a heating rod is arranged in the compression mold, and the heating rod is embedded in the compression mold along the length direction of the compression mold.
5. The integrated forming device for the titanium alloy square tubes as claimed in any one of claims 1 to 4, wherein the traversing mechanism comprises a screw rod, and a first nut and a second nut which are arranged on the screw rod in a penetrating manner, the first nut is connected with the upper die, and the second nut is connected with the preforming die.
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| CN202110182172.5A CN113000641B (en) | 2021-02-09 | 2021-02-09 | Titanium alloy square tube integrated forming device and method |
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| CN202110182172.5A CN113000641B (en) | 2021-02-09 | 2021-02-09 | Titanium alloy square tube integrated forming device and method |
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| CN113000641B true CN113000641B (en) | 2022-11-04 |
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| US7788958B2 (en) * | 2006-12-13 | 2010-09-07 | Shape Corporation | Roll former with aligned hydraulic former |
| DE102009003668B4 (en) * | 2009-03-24 | 2011-05-26 | Thyssenkrupp Steel Europe Ag | Device and method for producing at least partially closed profiles or semi-finished products from a circuit board |
| DE102010037534A1 (en) * | 2010-09-14 | 2012-03-15 | Thyssenkrupp Steel Europe Ag | Apparatus and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time |
| US9457633B2 (en) * | 2014-10-21 | 2016-10-04 | Benteler Automobiltechnik Gmbh | Cross member system for a coupling device a motor vehicle |
| CN109290451A (en) * | 2018-11-21 | 2019-02-01 | 安徽合力股份有限公司 | Forklift truck transverse beam casted die mould |
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| JPS55126318A (en) * | 1979-03-22 | 1980-09-30 | Kurimoto Iron Works Ltd | Forming press for square steel pipe |
| CN101715374A (en) * | 2007-05-07 | 2010-05-26 | 蒂森克虏伯钢铁欧洲股份公司 | Be used to make the apparatus and method of section bar |
| CN107597911A (en) * | 2017-09-23 | 2018-01-19 | 汕头市瑞祥模具有限公司 | A kind of chair headrest pull bar production equipment |
| CN211464429U (en) * | 2019-12-10 | 2020-09-11 | 李增红 | Rectangular pipe manufacturing die |
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